HK1152690A - Dirt disposal device - Google Patents

Abstract

The present invention provides a dirt disposal device (41) comprising: a dirt receiving body (43) with a film fitting portion (12) at upper part; a film receiving cassette (54) having a cylindrical tubular core (57) formed with a dirt litter-in port (16) at upper end, a lower flange (57f) extending outward in radical direction from lower end of the tubular core, and a cylindrical film (14) arranged to surround the tubular core (57) and compressed so as to be received in the axial direction of the tubular core (57), and a cassette connecting structure for detachably fitting the film receiving cassette (54) to the film fitting portion (12), thereby to enable the film receiving cassette to be installed in the dirt receiving body (43) easily, and to prevent the film receiving cassette from falling off from the dirt disposal body.

Description

Filth treatment device

Technical Field

The present invention relates to a waste disposal apparatus for disposing of waste such as used diapers for infants.

Background

In a waste disposal apparatus for disposing of waste such as used baby diapers, a film (film) storage cassette (cassette) is widely used from the viewpoint of cleaning and convenience. When the filth is continuously put into the filth treatment device, the membrane for accommodating the filth is continuously led out to the filth input port. As a conventional technique relating to a waste treatment apparatus including such a film sheet storage cassette, japanese patent No. 4402165 (patent document 1) is disclosed.

The waste treatment apparatus described in patent document 1 includes: a filth receiving body for receiving the waste filth; a membrane box rotating device which is rotatably arranged in a small space arranged at the upper part of the filth accommodating body; and a film accommodating case held by the film case rotating device.

The film sheet storage case includes: an inner wall defining a cylindrical core; an outer wall; and a flange portion extending from an upper portion of the inner wall toward the outer wall side. The diaphragm is folded into a bellows shape in a diaphragm housing space formed between the inner wall and the outer wall to be housed. An annular case flange portion protruding radially outward from an outer wall surface is provided on an outer wall of the film sheet storage case.

On the other hand, in the small space provided in the upper part of the filth storage body, as described above, the film cassette rotating device is rotatably mounted. An annular rotary device flange portion protruding radially inward from an inner wall surface is provided on the inner wall surface of the diaphragm cassette rotary device. When the film sheet storing magazine is set in the film sheet magazine rotating device, the magazine flange portion is mounted on the rotating device flange portion, and therefore the film sheet storing magazine is suspended in the film sheet magazine rotating device and held. According to this structure, the film sheet storage box can be rotatably mounted on the filth storage body by the film sheet rotating device, and the mounting operation is easy.

[ patent document 1] Japanese patent No. 4402165

Disclosure of Invention

(problems to be solved by the invention)

In a general waste treatment apparatus, a waste storage main body is divided into: the lower part of the containing body is used for storing filth; and the upper part of the accommodating body is used for installing the membrane storage box. Furthermore, the upper part of the containing body is pivoted to the lower part of the containing body or is detachably arranged on the lower part of the containing body. When the interior of the filth accommodating body is filled with the stored filth, a user rotates and opens the upper part of the accommodating body or removes the upper part of the accommodating body from the lower part of the accommodating body so as to take out the filth stored in the filth accommodating body.

In this case, the waste treatment apparatus described in patent document 1 has the following problems. That is, in the waste treatment apparatus described in patent document 1, as described above, the film sheet storage cassette is held in a suspended manner by the film sheet cassette rotating device. Therefore, in the above-mentioned waste removing operation, when the upper portion of the storage body is rotated to open the upper portion of the storage body, or when the upper portion of the storage body is removed, if the user carelessly falls the upper portion of the storage body, the film storage case may easily be jumped out of the waste treatment apparatus body. Therefore, when the user takes out the filth, the user needs to pay attention to the jumping out of the film sheet storage case, which makes the handling difficult.

Such a configuration in which the membrane cartridge is easily detached from the main body of the waste treatment apparatus is not preferable from the viewpoint of handling and hygiene.

In view of the above-mentioned problems, an object of the present invention is to provide a waste treatment apparatus in which a film cassette can be easily attached to a waste treatment main body and the film cassette can be prevented from falling off the waste treatment main body.

(means for solving the problems)

The invention provides a waste treatment apparatus, comprising: a filth receiving body which is provided with a membrane mounting part at the upper part and is used for storing the discarded filth; a film sheet storage case having: a cylindrical tubular core part with a filth input port formed at the upper end, a lower flange extending from the lower end part of the tubular core part to the radial outer side, and a cylindrical membrane arranged to surround the tubular core part and compressed and accommodated in the axial direction of the tubular core part; and a cassette connecting mechanism for detachably mounting the film accommodating cassette on the film mounting portion. Here, the cartridge connecting mechanism is constituted by: a body side clamping part arranged on the filth accommodating body; and a cassette side locking part which is arranged on the lower flange and is clamped with the body side locking part to connect the membrane accommodating cassette to the filth accommodating body.

According to this structure, the film sheet storage case can be stably connected to the waste storage body by the case connection mechanism. That is, since the cartridge-side locking portion provided on the lower flange is engaged with the body-side locking portion provided on the film mounting portion to connect the film accommodating cartridge to the filth accommodating body, the film accommodating cartridge can be surely prevented from moving upward. Thus, even if the user falls the filth storage body in the filth taking-out operation, the film storage box can be prevented from falling off from the filth storage body. The cartridge-side locking portion constituting the cartridge connecting mechanism is provided only on the lower flange of the film sheet storage cartridge. Therefore, when the filth processing device is used, the membrane accommodated in the membrane accommodating box can be prevented from contacting with the box connecting mechanism and being damaged.

The diaphragm housing case may further include an outer wall portion extending upward from an outer edge of the lower flange, and the diaphragm may be housed in a space defined by the tubular core portion, the lower flange, and the outer wall portion. The diaphragm housing case may further include an upper flange extending radially outward from the upper end of the tubular core, and the diaphragm may be guided and supplied to the tubular core over an outer edge of the upper flange.

More preferably, the composition is: the body-side locking portion includes a protruding portion protruding radially inward; the cassette side locking part is engaged with the protrusion part to prevent the membrane accommodating cassette from moving upwards under the state that the membrane accommodating cassette is connected with the filth accommodating body.

More preferably, the composition is: the protrusion is constituted by a claw portion protruding radially inward from the inner peripheral surface of the diaphragm mounting portion at a predetermined height position on the upper side from the bottom surface of the diaphragm mounting portion. Further, the cartridge-side locking portion includes: notches having a larger circumferential width than the claw portions, provided at circumferential positions corresponding to the claw portions, and recessed radially inward from outer edges of the lower flanges; and an outer edge portion of the lower flange, which is engaged with the claw portion in a state that the film accommodating box is connected to the film mounting portion.

According to this structure, the user can connect the film accommodating box to the filth accommodating main body by the following simple operation. That is, the user aligns the position of the claw portion with the position of the notch provided in the outer edge portion of the lower flange. Then, the film accommodating case is pushed into the film mounting portion. Finally, the film sheet storage case is rotated in the circumferential direction. By such a series of simple operations, the film storage case can be connected to the filth storage body. Further, the cartridge coupling mechanism is composed of: the claw part arranged on the diaphragm mounting part, the outer edge part of the lower flange and the notch arranged on the outer edge part of the lower flange. That is, the cartridge coupling mechanism is constituted by the lower flange and the concave-convex shape formed in the diaphragm mounting portion without using a new member. Therefore, the manufacturing cost of the waste treatment device can be reduced.

The claw portions and the notches are provided at a plurality of positions, and are preferably arranged at equal intervals in the circumferential direction with respect to the central axis of the tubular core portion.

According to this configuration, even when a larger force acts in a direction to detach the film sheet storage case from the filth storage body, the claw portions provided at a plurality of positions can effectively suppress such a situation. Further, the claw portions provided at a plurality of positions are arranged at equal intervals in the circumferential direction, so that the force applied to each claw portion can be reduced, and the force can be uniformly distributed, whereby the claw portions can be effectively prevented from being broken.

The cartridge-side locking portion preferably further includes an engaging rib (rib) portion extending radially inward from an outer edge of the lower flange on the upper surface of the lower flange. The engaging rib preferably engages with the claw portion to restrict the rotation of the film sheet storage case when the film sheet storage case is connected to the filth storage body and the film sheet storage case is rotated in the circumferential direction.

The engaging rib is preferably formed of: a 1 st engagement rib disposed at one circumferential side end of the notch; and a 2 nd engaging rib portion spaced apart from the 1 st engaging rib portion by a predetermined distance toward the other side in the circumferential direction. When the claw part is abutted with the 1 st clamping rib part, the positions of the claw part and the notch are consistent, and the film accommodating box can be detached from the film mounting part; when the claw part is abutted with the 2 nd engagement rib part, the claw part is engaged with the outer edge part of the lower flange to prevent the film accommodating box from moving upwards.

According to this configuration, the film sheet accommodating case is disposed on the film sheet mounting portion, and the film sheet accommodating case is rotated in one circumferential direction, and becomes a connected state when the rotation is restricted. The film sheet storage case is rotated to the other side in the circumferential direction, and becomes a connection released state when the rotation is restricted. That is, since the user can easily determine the state of connection/disconnection, the film sheet storage case can be more easily attached/detached.

Above the lower flange, there is preferably provided: an annular rib portion extending continuously in the circumferential direction around the central axis at a predetermined position on the radially inner side of the outer edge of the lower flange, and connected to the engaging rib portion; and a plurality of radial ribs extending radially from the tubular core to the annular rib.

According to this configuration, the strength of the lower flange can be increased by the rib provided on the upper surface of the lower flange. Further, since the film accommodated in the film accommodating case is disposed on the rib, a gap is formed between the upper surface of the lower flange and the film, that is, a height of the rib in a vertical direction. Therefore, when the film sheet storage case is connected to the filth storage body, the claw portions enter the gap, so that the interference between the claw portions and the film sheet can be prevented. Therefore, the diaphragm can be prevented from being damaged by the claw portion.

(effect of the invention)

According to the filth processing device of the present invention, the film sheet accommodating cassette can be stably connected to the filth accommodating main body by the cassette connecting mechanism. That is, since the cartridge-side locking portion provided on the lower flange and the body-side locking portion provided on the film mounting portion are engaged with each other to connect the film accommodating cartridge to the filth accommodating body, the film accommodating cartridge can be surely prevented from moving upward. Therefore, even if the user falls the filth accommodating body in the filth taking-out operation, the film accommodating box can still be prevented from being separated from the filth accommodating body. The cartridge-side locking portion constituting the cartridge connecting mechanism is provided only on the lower flange of the film sheet storage cartridge. Thus, when the filth processing device is used, the interference between the membrane accommodated in the membrane accommodating box and the box connecting mechanism can be prevented. Therefore, the constituent members of the cartridge connecting mechanism can be prevented from damaging the membrane.

Drawings

Fig. 1 is a perspective view showing an entire waste treatment apparatus according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a filth treatment apparatus according to the same embodiment.

FIG. 3 is a side sectional view of a filth treatment apparatus according to the same embodiment.

Fig. 4 is an enlarged side sectional view showing a closing state of the sealing mechanism of the same embodiment in an enlarged manner.

Fig. 5 is an enlarged side sectional view showing the sealing mechanism of the same embodiment in an enlarged manner when opened.

Fig. 6 (a) is an enlarged side sectional view schematically showing the sealing door and the diaphragm sandwiching portion when the closing portion of the sealing door of the present embodiment is opened. (b) The side cross-sectional view is an enlarged schematic view showing the sealing door and the diaphragm sandwiching portion when the sealing door engaging portion is closed in the same embodiment.

Fig. 7 (a) is an enlarged side sectional view showing a diaphragm sandwiching portion when the convex sealing door and the concave sealing door abutting portion according to another embodiment of the present invention are opened. (b) An enlarged side cross-sectional view showing an enlarged diaphragm sandwiching portion when the convex sealing door and the concave sealing door engaging portion according to another embodiment of the present invention are closed.

Fig. 8 is an exploded perspective view showing the film housing portion taken out.

FIG. 9 is a perspective view showing the entire waste treatment apparatus according to the embodiment of the present invention.

Fig. 10 is a perspective view of the filth treatment device of the same embodiment viewed obliquely from the back.

Fig. 11 is an enlarged side sectional view showing a body lock mechanism and a lid lock mechanism of the same embodiment in an enlarged manner.

Fig. 12 is a perspective view showing a body lock releasing operation of the same embodiment.

Fig. 13 is a side sectional view showing a state where the upper part of the housing body of the same embodiment is turned.

Fig. 14 is a perspective view showing a lid body lock release operation of the same embodiment.

FIG. 15 is a side sectional view showing a state where a door for sealing is closed in a filth treatment apparatus according to another embodiment of the present invention.

FIG. 16 is a side sectional view showing the sealing door of the filth treatment apparatus shown in FIG. 15 when the sealing door is opened.

Fig. 17 is a perspective view showing the sealing mechanism shown in fig. 16 viewed obliquely from below.

Fig. 18 is a perspective view showing a film sheet housing case of the present invention.

Fig. 19 is a perspective view showing a state where a film sheet is removed from the film sheet housing cassette shown in fig. 18.

Fig. 20 is a side view of the film sheet storage case in the state shown in fig. 19, viewed from the side.

Fig. 21 is a plan view of the film sheet housing case in the state shown in fig. 19, viewed from above the axis O of the tubular core.

Fig. 22 is an external view of the filth treatment apparatus shown in fig. 15 when the film sheet storage cassette is removed from the filth treatment apparatus as viewed from above the axis O.

FIG. 23 is a sectional view showing a membrane twisting mechanism of a conventional filth treatment apparatus.

FIG. 24 is a sectional view showing a film sandwiching mechanism of a conventional filth treatment apparatus.

Description of the main Components

11. 41 device for processing filth 12 diaphragm mounting part

12a mounting portion inner peripheral surface 12b mounting portion bottom surface

12h opening 13, 43 for receiving filth

14 membrane housing part 15 membrane

16 waste inlet 17, 47 for receiving the lower part of the body

17b, 47b bottom 17h body opening

18 cover handles 19, 49 receive the upper part of the body

20 cover body key 20h cover body key hook

21 body key 21g key outer periphery

21p column 22 accommodating upper handle of body

23 cover 24 cover locking mechanism

25 body locking mechanism 26 closing knot

27. 57 tubular core 27f, 57f tubular core flange

28. 48 sealing mechanism 29 diaphragm restraining flange

30 lid hinge 31 body hinge

32-button hook hole 33, 53 door for sealing

33c, 35c, 53c, 55c sandwiching surface

34 sealing door upper surface 34f upper surface front part

34r upper surface rear parts 35, 55 closing door engaging part

36 cover key hook part 37 guide rail

38 diaphragm cutter 39, 69 spring

42 inclined plane part 44 cylindrical column part

45 closed mechanism hinge 46 spring cover

50 hinge 51 groove-like recess

54 film receiving case 56, 62 claw part

58 gap 60 upper surface

61 Rib 61a circumferential Rib

61b radial rib 61_C1、61_C2Rib for engagement

63 lower surface of spring guide 64

101 membrane 102 tubular guide

103 twisting means 104 closing part

105 dirt container 106 cover

107 diaphragm 108 closing mechanism

109 bar-shaped sandwiching member 110 for waste

133 protruding strips and 135 grooves

D axis of filth

S forward and backward moving direction

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings. Fig. 1 is a perspective view showing an entire waste treatment apparatus according to an embodiment of the present invention. Fig. 2 and 3 are side sectional views showing a filth treatment apparatus according to the same embodiment, in which fig. 2 shows a closed state of a sealing door, and fig. 3 shows an opened state of the sealing door.

The waste treatment device 11 includes: an annular waste inlet 16 for putting waste D such as used diapers; a cylindrical membrane 15 extending downward from the waste inlet 16 and having a lower end closed by a closing knot 26; a waste storage body 13 for storing the waste D fed from the waste inlet 16 together with the film 15; and a cover 23 covering the waste inlet 16 from above.

A strip-shaped membrane 15 is arranged at the filth input 16. The membrane 15 extends downward so as to cover the mouth edge of the waste inlet 16.

The filth storage body 13 is a hollow container for storing the filth D discarded inside the membrane 15, and is divided into a storage body lower portion 17 and a storage body upper portion 19. The lower housing body 17 has a bottom 17b on the lower end side and an opening on the upper end side. The upper housing body 19 covers the upper opening of the lower housing body 17 at its lower end, and has a waste inlet 16 at its upper end.

Further, an openable and closable sealing mechanism 28 is provided in the upper part 19 of the housing body to block the filth inlet 16 from the stored filth by sandwiching the membrane 15 therebetween. The sealing mechanism 28 has a sealing door 33 and a sealing door abutting portion 35. The closing mechanism 28 will be described later.

When the user discards the filth, the user first opens the cover 23 and then throws the filth D into the membrane 15 through the filth inlet 16. Then, the user puts his hand into the filth inlet 16, and pushes down the diaphragm 15 together with the filth D to push the sealing door 33 open. The filth D pushed downward passes through the space between the opened sealing door 33 and the sealing door abutting portion 35 together with the membrane 15. The filth D passing through the sealing door 33 and the sealing door abutting portion 35 travels downward along the membrane 15 and is accumulated in the filth storage body 13. When the user throws the filth under the sealing door 33 and the sealing door abutting portion 35 and takes out his/her hand from the filth inlet 16, the sealing door 33 is immediately closed to sandwich the film 15. Further, since the new film 15 is drawn out from the waste inlet 16, the new film 15 is always supplied to the waste inlet 16.

Fig. 4 is an enlarged cross-sectional view of the closing mechanism 28 shown in fig. 2, which is enlarged in cross-sectional view, and fig. 5 is an enlarged cross-sectional view of the closing mechanism 28 shown in fig. 3, which is enlarged in cross-sectional view, when opened. Further, a line O in fig. 4 shows a central axis of the filth inlet 16 and a tubular core portion described later.

As described above, the waste treatment apparatus 11 includes: a waste inlet 16; and an open-close type sealing mechanism 28 for sandwiching and blocking the membrane 15 between the membrane and the waste D discarded in the waste storage body 13. The sealing mechanism 28 has a sealing door 33 and a sealing door engaging portion 35, and the sealing door 33 and the sealing door engaging portion 35 have a concave-convex shape that engages with each other when the sealing door 33 is closed to sandwich the diaphragm. This constitution will be described later.

In a state where the sealing door 33 and the sealing door abutting portion 35 are closed, the sealing door 33 covers the waste inlet 16 from below and seals the waste inlet, and the sealing door abutting portion 35 is provided in the housing main body upper portion 19. Further, a guide rail (guide rail)37 is attached to an inner wall of the upper housing body portion 19 to guide the closing door 33 to move in the opening direction and the closing direction. The guide rail 37 is disposed so as to extend below the sealing door engaging portion 35, and the sealing door 33 slides along the guide rail 37.

The sealing doors 33 are urged toward the sealing door engaging portions 35 and normally engage with each other to be closed. In a normal state, as shown in fig. 2, the diaphragm 15 is sandwiched by the sealing door 33 and the sealing door abutting portion 35. In contrast, when the user pushes down the sealing door 33, the sealing door 33 slides along the guide rail 37 in the opening direction away from the sealing door engaging portion 35. When the sealing door 33 is opened, as shown in fig. 3, the sandwiching of the film 15 is released, and the filth D can be put into the filth storage body 13.

In the present embodiment, as shown in fig. 2 to 5, the sealing door 33 and the sealing door abutting portion 35 are provided with a pair of concave and convex shapes that engage with each other when closed. The diaphragm 15 is sandwiched by the concave-convex shapes provided in the sealing door 33 and the sealing door engaging portion 35. The concave-convex shape provided in the sealing door 33 is constituted by a sandwiching surface 33c which abuts against the diaphragm 15 when closed. The concave-convex shape provided in the sealing door engaging portion 35 is constituted by a sandwiching surface 35c that abuts against the diaphragm 15 when closed.

The sandwiching surfaces 33c and 35c will be described in detail below with reference to fig. 6. Fig. 6 (a) is an enlarged side sectional view schematically showing a portion of the diaphragm sandwiched when the sealing door 33 and the sealing door engaging portion 35 of the present embodiment are opened, in an enlarged manner. Fig. 6 (b) is a schematic side cross-sectional view showing the diaphragm sandwiching portion of the sealing door 33 and the sealing door engaging portion 35 of the present embodiment in an enlarged scale when closed. For easy understanding, fig. 6 schematically shows the film sheet sandwiching portions of the sealing door 33 and the sealing door engaging portion 35, and thus the detailed configuration is different from that of the actual embodiment.

As shown in fig. 6 (a) and 6 (b), the sandwiching surface 33c corresponding to the diaphragm sandwiching portion of the sealing door 33 is composed of: a surface 33c corresponding to the front end region of the upper surface of the sealing door 33₁(ii) a At the surface 33c₁Front end of (3), and face 33c₁Connected to extend downward at substantially right angles and to the face 33c₁Face 33c forming substantially right-angled corner₂(ii) a And on the surface 33c₂Lower end of (3), and face 33c₂Connected at substantially right angle to extend forward and connected with the surface 33c₂Face 33c forming substantially right-angled corner₃。

The sandwiching surface 35c of the film sheet sandwiching portion corresponding to the sealing door abutting portion 35 is constituted by: is arranged at the upper end of the film clamping part, is approximately orthogonal to the axis O of the filth input port 16 and is closed with the surface 33c₁Substantially parallel surface 35c₁(ii) a At the surface 35c₁Front end of (2), and face 35c₁Connected to extend downward at substantially right angles and to form a closed contact surface 33c₂ApproximatelyParallel faces 35c₂(ii) a And on the surface 35c₂Lower end of (2), and face 35c₂Connected at a substantially right angle to extend forward and form a closed and-contact surface 33c₃Substantially parallel face 33c₃。

The sealing door 33 slides in the direction of the arrow in fig. 6 (a) from the opened state shown in fig. 6 (a) to sandwich the diaphragm 15, and when the sealing door is in the closed state shown in fig. 6 (b), the diaphragm 15 is in the closed state α₁And alpha₂The corner portion of the two positions of (a) is bent at a substantially right angle. That is, the vertical direction intermediate point α in the sandwiched portion of the sandwiched diaphragm 15 is sandwiched by the sealing door 33 and the sealing door engaging portion 35₁、α₂The upper end β and the lower end γ of the sandwiched portion of the diaphragm are bent sideways with respect to an imaginary straight line connecting the upper end β and the lower end γ of the sandwiched portion shown by a chain line indicated by one dot in fig. 6 (b). Further, by forming on the surface 35c₁The corner of the rear end bends the diaphragm 15 at the upper end β of the diaphragm sandwiching portion. Similarly, the surface 33c is formed with₃The membrane 15 is also bent at the lower end γ of the membrane sandwiching portion.

Here, the filth D discarded inside the membrane 15 is weighted downward by its own weight. That is, the film 15 is always pulled vertically downward by the filth D. When the diaphragm 15 in such a state of being pulled is sandwiched as shown in fig. 6 (b), the diaphragm 15 is held at α₁、α₂β, γ, when the corners of the four positions are bent, i.e., the corners apply a larger tensile force to the diaphragm 15. Thereby, the residual ventilation path which is the main factor of odor transmission in the prior art can be effectively blocked. Therefore, the odor barrier property can be greatly improved. In addition, the twisted membrane does not need to be discarded every time the filth is discarded, so that the reduction of the maximum filth receiving capacity caused by the twisted part can be prevented. When the sealing door 33 and the sealing door engaging portion 35 are mass-produced by a mold molding method, the shape of the recess and projection having the substantially right-angled corner portion is a stepped shape, and is not particularly complicated. Therefore, molding is easy. Therefore, the method is advantageous in mass production of products.

Fig. 7 (a) and 7 (b) schematically show another embodiment of the sealing door 33 and the sealing door abutting portion 35. Fig. 7 (a) is an enlarged side sectional view showing a diaphragm sandwiching portion when the convex sealing door and the concave sealing door abutting portion of the other embodiment are opened. Fig. 7 (b) is an enlarged side sectional view showing the diaphragm sandwiching portion when the convex sealing door and the concave sealing door abutting portion of the embodiment are closed in an enlarged manner. For easy understanding, fig. 7 schematically shows the film sheet sandwiching portions of the sealing door 33 and the sealing door engaging portion 35, and thus the detailed configuration is different from that of the actual embodiment.

In this embodiment, the sandwiching of the diaphragm 15 by the sealing door 33 and the sealing door engaging portion 35 is achieved by the engagement of the sealing door 33 provided with the diaphragm sandwiching portion having the convex-shaped lateral cross section and the sealing door engaging portion 35 provided with the diaphragm sandwiching portion having the concave-shaped lateral cross section for receiving the convex shape provided in the sealing door 33.

Specifically, the sandwiching surface 33c is formed with a protrusion 133 having a cross-sectional shape of a letter of a convex. Further, a groove 135 having a concave cross-section is formed on the sandwiching surface 35 c. The protrusion 133 protrudes substantially parallel to the sliding direction of the sealing door 33. Therefore, when the sealing door 33 slides in the closing direction and engages with the sealing door engaging portion 35, the concave-convex shapes provided in the sealing door 33 and the sealing door engaging portion 35 engage with each other without hindering the sliding.

As shown in fig. 7, the surfaces constituting the sandwiching surface 33c formed in the sealing door 33 are 33c₁To 33c₅. Further, a sandwiching surface 35 formed at the closing door abutting portion 35 is constituted_cRespectively is 35c₁To 35c₅. Of these constituting surfaces, 33c₂And 33c₄And 35c₂And 35c₄The surface is substantially orthogonal to an imaginary straight line connecting the upper end β to the lower end γ of the diaphragm sandwiching portion shown in fig. 7 (b). Therefore, the sealing door 33 is opened from the state shown in fig. 7 (a) to fig. 7The diaphragm 15 is sandwiched by sliding in the direction of the arrow in (a) of (a), and when the diaphragm 15 is in the closed state shown in (b) of fig. 7, the diaphragm 15 is in α₁To alpha₄The corners of the four positions of (a) are bent at substantially right angles. I.e. at α₁To alpha₂Meta and alpha₃To alpha₄The membrane 15 is curved in a substantially horizontal direction.

As in the case of fig. 6, the weight of the filth D on the membrane 15 is applied to the membrane in a vertically downward direction. Therefore, in the substantially right-angled corners of these four positions, a large tensile force is applied to the diaphragm 15. This makes it possible to bend the remaining ventilation path formed along the inner side of the membrane 15 at a right angle, thereby effectively blocking the odor. In addition, since the twisting film 15 is not required every time the filth is discarded, it is possible to prevent a decrease in the maximum filth collecting capacity due to the twisting portion. Further, when mass-producing the sealing door 33 and the sealing door engaging portion 35 by the mold molding method, the concave-convex shape is easily formed, and therefore, there is an advantage in mass-producing the product.

The filth disposal device 11 further includes a spring 39 for always urging the sealing door 33 in the direction of the sealing door engaging portion 35. The greater the elastic urging force of the spring 39, the greater the force with which the diaphragm 15 is sandwiched, and the more the odor blocking property can be improved.

Fig. 8 is an exploded perspective view showing the membrane housing portion 14 taken out. The waste treatment device 11 includes a film sheet storage unit 14 that forms a waste inlet 16 and stores a film sheet 15. The membrane housing part 14 is detachably mounted on a membrane mounting part 12 provided above an upper part 19 of the housing body, and forms the periphery of a waste inlet 16. The membrane housing portion 14 includes: a cylindrical tubular core 27 extending downward from the waste inlet 16; a tubular core flange 27f provided at a lower end portion of the tubular core 27; and a diaphragm restraining flange 29 having a flange shape and fitted and fixed to the upper end side of the tubular core portion 27.

The diaphragm 15 is folded into a bellows shape in the axial direction of the tubular core portion 27 and is inserted through the outer diameter side of the tubular core portion 27 so as to be coaxially arranged. Further, the diaphragm suppressing flange 29 is fitted into and connected to the tubular core 27 in such a manner as to suppress the emergence of the diaphragm 15. That is, the diaphragm 15 is compressed and folded into a bellows-like shape in the space between the upper end of the tubular core 27 in the direction of the axis O and the lower end of the tubular core 27 by the diaphragm suppressing flange 29 located at the upper end of the tubular core 27 and the tubular core flange 27f located at the lower end of the tubular core 27.

The membrane 15 is a consumable part of the membrane housing portion 14, and when all of the membranes housed are used, the user removes the used membrane housing portion 14 and mounts a new membrane housing portion 14 to the membrane mounting portion 12. Alternatively, the membrane housing portion 14 may be configured such that only the membrane is replaced when all of the membranes 15 housed in the membrane housing portion 14 are used up. That is, the tubular core portion flange 27f may be fixed to the diaphragm mounting portion 12, and the diaphragm suppressing flange 29 may be detachably mounted to the tubular core portion 27. According to this configuration, when replacing the diaphragm, the user can remove the diaphragm suppressing flange 29 and replace only the diaphragm.

After the film sheet housing portion 14 is attached to the filth treatment apparatus 11, the user pulls out the leading end of the film sheet 15, which is compressed and housed in the tubular core portion 27, upward so as to go over the outer peripheral edge of the film sheet restraining flange 29 in a state where the cover 23 is opened. Then, the pulled-out front end is closed by a closing knot 26. Further, the sealing ring 26 is inserted into the tubular core portion 27 and pushed downward, and the sealing ring 26 is pushed to the bottom portion 17b while the film 15 is guided out from the film housing portion 14. When the used diaper or the like is discarded inside the film 15, the waste is accumulated in the film 15, and the film 15 is folded into an expansion bag shape on the outer diameter side of the tubular core portion 27, that is, is sequentially drawn out and extended downward. Therefore, the user can continuously discard the filth into the filth storage body 13.

As shown in fig. 4, in the filth treatment apparatus 11 of the present embodiment, the film sheet is inclined so that the direction of the axis O of the tubular core 27, that is, the opening direction of the filth inlet 16 is inclined at a predetermined angleThe receptacle 14 is supported by the receptacle upper portion 19. The filth inlet 16 is formed at a predetermined angle theta from the vertical direction₁₆Is inclined toward the front side. Therefore, the mother can easily discard the infant diaper. To this point, the following is briefly explained. The operation of changing the diaper of a baby by a mother is generally performed in a state where the baby is lying on a bed and the mother is sitting. Therefore, according to the present embodiment, since the filth introduction port 16 is at the predetermined angle θ₁₆The baby is easy to replace the diaper by sitting on the baby carrier, and the mother can directly discard the used diaper (waste) in the waste inlet 16 while sitting on the baby carrier.

Further, although not shown in the drawings, the film housing portion 14 may be supported by the housing main body upper portion 19 so that the opening direction of the waste inlet 16 is horizontal. At this time, the axis O of the tubular core 27 extends horizontally. This is because a tensile force can also be applied to the sandwiched diaphragm portion in this case.

As shown in fig. 4 and 5, the sealing door 33 has a substantially flat sealing door upper surface 34. The detailed shape of the sealing door upper surface 34 will be described later. In the filth treatment apparatus 11 of the present embodiment, the sealing door 33 is supported by the storage main body upper portion 19 such that the sealing door upper surface 34 is inclined at a predetermined angle corresponding to the inclined axial direction of the tubular core portion 27. That is, the sealing door 33 is supported by the housing main body upper portion 19 in a tilted manner at a predetermined angle so that the front end side is a lower position in the vertical direction and the rear end side is a higher position in the vertical direction in the closed state. The sealing door 33 moves forward and backward at a predetermined angle toward the sealing door engaging portion 35. The advancing/retreating direction S of the sealing door 33 is inclined at an angle different from the axis O of the tubular core 27.

Specifically, as shown in fig. 4, the angle of inclination of the waste inlet 16 (tubular core 27) with respect to the vertical direction is θ₁₆The angle of inclination of the sealing door 33 with respect to the vertical advancing/retreating direction S is θ₃₃These tilt angles satisfy the followingEquation (1).

0°＜θ₁₆＜θ₃₃ …(1)

According to the present embodiment, the inclination angle θ of the advancing/retreating direction S of the sealing door 33₃₃The angle of inclination theta of the inlet 16 for introducing the filth₁₆Is large. As a result, the sealing door 33 moves backward in the opening direction, and the sealing door 33 moves downward and rearward in parallel and is separated from the axis O of the tubular core 27. That is, the sealing door 33 can be sufficiently separated from the diaphragm 15 when opened. Therefore, since the membrane 15 is largely opened when opened, the user can easily discard the filth toward the filth storage body 13 in a seated state.

In addition, although not shown, the sealing door 33 may be supported on the upper portion 19 of the housing body such that the upper surface 34 of the sealing door is perpendicular (θ)₃₃90 °). At this time, the sealing door 33 moves forward and backward in the horizontal direction. In this case, the sealing door 33 can be effectively separated from the diaphragm 15 when the door is opened.

Further, according to the present embodiment, the tubular core flange 27f corresponding to the lower end portion of the film housing portion 14 disposed so as to surround the lower end of the tubular core 27 is supported by the filth housing body 13 so as to be inclined at a predetermined angle. That is, as shown in fig. 2 to 5, the front end side of the tubular core flange 27f is a vertically low position, and the rear end side is a vertically high position. The sandwiching surface 35c of the closing door engaging portion 35 is disposed in the vicinity of the lowest position of the tubular core flange 27 f. This makes it easier to sandwich the diaphragm 15 between the sealing doors 33. The following description is made for this point.

The membrane 15 accommodated in the membrane accommodating portion 14 so as to be led out from the contaminant inlet 16 passes through the inside of the tubular core portion 27 in a vertically downward direction, and is accommodated in the accommodating main body lower portion 17 together with the contaminant D. Therefore, when the sealing door 33 is opened, the film 15 is pulled vertically downward by the weight of the filth D discarded in the film 15, and hence the filth D is discarded from the film 15The waste inlet 16 extends substantially straight downward. Here, as previously described, the tubular core 27 is at a predetermined angle θ₁₆And (4) inclining. Therefore, let Lo be the diameter of the waste inlet 16 and θ o be the inclination angle of the waste inlet 16 with respect to the horizontal direction (θ ═ θ₁₆) In the case where the membrane 15 extends straight downward from the waste inlet 16, the membrane naturally approaches obliquely downward toward the front by Lo (1-cos θ o) at least in a horizontal distance. On the inclined lower side naturally approaching in this manner, the diaphragm 15 is sandwiched by the sealing door 33 and the sealing door abutting portion 35. This makes it easier to sandwich the membrane 15 by the sealing door 33, and therefore, sealing for blocking odor can be performed more efficiently.

Further, according to the present embodiment, although the sealing door upper surface 34 is formed to be substantially flat as described above, strictly speaking, the sealing door upper surface 34 is constituted by the upper surface front portion 34f which is substantially flat and the upper surface rear portion 34r which is inclined and gently curved with respect to the upper surface front portion 34 f. This point will be described with reference to fig. 4. As described above, the film housing portion 14 is supported by the housing main body upper portion 19 so as to be inclined downward in the front direction. The sealing door 33 engages with the sealing door engaging portion 35 on the front side (i.e., on the obliquely lower side) to sandwich the diaphragm. Here, when the sealing door 33 is closed, the sandwiching surface 35c of the sealing door abutting portion 35 is interposed between the film housing portion 14 and the upper surface front portion 34 f. In contrast, the sandwiching surface 35c of the sealing door engaging portion 35 is not interposed between the film housing portion 14 and the upper surface rear portion 34 r. From this, in order to come into contact with the sealing door abutting portion 35 and seal the waste inlet from below, the sealing door upper surface 34 is constituted by 2 different surfaces (the flat upper surface front portion 34f and the inclined upper surface rear portion 34 r).

In the present embodiment, as shown in fig. 4, the angle between the upper surface front portion 34f and the horizontal plane is set to θ_34fThe angle between the rear part 34r of the upper surface and the horizontal plane is theta_34rAnd a sealing door upper surface 34 is formed so as to satisfy the following formula (2).

0°≤θ_34f＜θ_34r …(2)

Thus, when the user pushes open the sealing door 33 to dispose of the filth, the user can efficiently transmit the pushing force to the sealing door 33 by pushing the upper rear surface portion 34 r. Therefore, the user can open the sealing door 33 with less force.

In addition, in a modification of the present embodiment, the forward/backward movement direction S may be substantially orthogonal to the upper surface rear portion 34 r. According to this modification, the sealing door 33 can be input to the spring 39 without reducing the pressing force received from the hand of the user. Therefore, the user can push the closing door 33 open with less force.

Next, the opening operation of the filth storage body 13 will be described.

Fig. 9 is a perspective view showing the entire body lock (lock) mechanism 25 and the cover lock mechanism 24 of the present embodiment, and fig. 10 is a perspective view of the entire waste treatment apparatus 11 of the present embodiment viewed from the rear oblique direction. Fig. 11 is an enlarged side cross-sectional view showing the main body lock mechanism 25 and the lid lock mechanism 24 in an enlarged scale.

In the normal use state of the filth treatment apparatus 11, the lower end side of the upper housing body part 19 covers the body opening 17h at the upper end of the lower housing body part 17 to close the upper housing body part 19 and the lower housing body part 17. A diaphragm mounting portion 12 is provided on the upper portion of the housing body upper portion 19, and a diaphragm housing portion 14 is mounted thereon.

A main body hinge (hinge)31 is provided on the rear surface of the waste storage main body 13. The main body hinge 31 is disposed substantially at the center of the vertical height of the waste treatment device 11. The upper housing body 19 is pivotally connected to the lower housing body 17 by a body hinge 31, and the upper housing body 19 is rotatable about the body hinge 31 as a fulcrum. When the upper housing body part 19 is rotated, the upper body opening 17h of the lower housing body part 17 is opened to the outside.

Further, on the front surface of the filth storage body 13 are disposed: a body lock mechanism 25 for locking the rotation of the upper housing body part 19 in a state where the upper housing body part 19 covers the lower housing body part 17, that is, in a state where the upper housing body part 19 closes the lower housing body part 17; and a body lock releasing mechanism for releasing the lock.

The body lock mechanism 25 includes: a cylindrical body key 21; a key hooking hole 32, which is a through hole, is provided in the upper housing body 19 for engaging the lock body key 21.

The body key 21 is formed at the upper end of a flexible column portion 21p extending in the up-down direction. The lower end of the column portion 21p is connected to the upper end of the housing body lower portion 17.

The main body key 21 is a cylinder projecting radially outward of the rotation of the housing main body upper part 19, and a key peripheral edge 21g of the outer peripheral edge of the cylinder is engaged with a key engaging hole 32 formed on the lower end side of the housing main body upper part 19, thereby preventing the rotation of the housing main body upper part 19.

The body lock releasing mechanism includes: a body key 21 belonging to the operation part for releasing the lock; and an opening operation part for rotating and opening the upper part 19 of the storage body to place a hand thereon after unlocking.

The upper housing body 19 has an upper housing body handle 22 as an opening operation portion at a lower end of a front surface of the upper housing body 19 opposite to the rear surface thereof to which the body hinge 31 is attached. The upper handle 22 of the storage body is disposed below the vicinity of the body key 21.

The body lock mechanism 25 is released from engagement with the key hooking hole 32 only when the body key 21 is pressed. When the user releases his or her hand from the body key 21, the column portion 21p returns to the original position, and the body lock mechanism 25 returns to the locked state.

When the inside of the waste storage body 13 is filled with the waste D, the body locking mechanism 25 is released to open the storage body upper part 19, and the waste D inside is taken out.

Fig. 12 is a perspective view showing the releasing operation of the body lock mechanism 25. As shown in fig. 12, the user puts four fingers except the thumb on the upper handle 22 of the storage body with one hand from below, presses the body key 21 located above the vicinity of the upper handle 22 of the storage body with the thumb, and lifts the upper handle 22 of the storage body while releasing the lock. Thereby, the upper part 19 of the housing body is turned toward the back side, and the filth housing body 13 is opened.

Fig. 13 is a side sectional view showing a state where the upper part 19 of the housing body of the present embodiment is completely rotated. When taking out and disposing of the filth D which has been stored in the filth storage body 13 and has overflowed, the user first opens the upper portion 19 of the storage body completely as shown in fig. 13 and cuts the film 15 by a film cutter (cutter) 38. Then, the cut surface of the film 15 is tied to seal it, and the filth is taken out from the filth housing body 13 and discarded. After taking out the filth D, the user covers the storage body upper part 19 on the storage body lower part 17. The main body key 21 is engaged with the key engaging hole 32, and the storage main body upper part 19 is locked again.

In the filth disposal device 11 of the present embodiment, when the storage body upper part 19 is unlocked and rotated in order to open the storage body upper part 19, the storage body upper part handle 22 is supported by any one finger of one hand of an adult, and the body button 21 is unlocked by pressing the body button 21 by the other finger of the one hand, so that the body button 21 is positioned above the vicinity of the storage body upper part handle 22.

More specifically, when four fingers are placed on the upper handle 22 of the housing body from below and the fingers are gripped with the four fingers as fulcrums, the body key 21 is positioned on a track along which the remaining thumb travels most naturally in terms of ergonomics.

This makes the operation of unlocking and rotating the upper part 19 of the storage body open easier and more comfortable. That is, the user can release the lock with one hand in accordance with the natural finger-holding motion.

In order to unlock the housing body upper part 19 by releasing the body lock mechanism 25, the housing body upper part 19 is rotated by pushing the body push button 21 in an inner radial direction substantially orthogonal to a rotational direction of the housing body upper part 19 and lifting the housing body upper part handle 22.

Thus, the child who does not want to open the consciousness and intelligence can hardly open the upper portion 19 of the storage body by moving in two different directions. Therefore, it is possible to prevent an infant from accidentally opening the upper portion 19 of the storage body and touching the film cutter 38 for cutting the film 15 to be damaged.

On the other hand, if the adult operates with the awareness of opening, the upper portion 19 of the housing body can be opened by simply releasing the lock with one hand, and the disposal of the filth stored in the filth housing body 13 is facilitated.

Next, the operation of opening the lid 23 will be described.

The end portion on the back side of the lid 23 is pivotally connected to the upper end portion of the upper housing body 19 by a lid hinge 30, and the lid 23 is rotatable about the lid hinge 30 as a fulcrum. When the cover 23 is rotated to open the cover, the filth inlet 16 is opened outward as shown in fig. 1.

As shown in fig. 9 and 11, the waste treatment apparatus 11 includes: a cover body locking mechanism 24 for locking the rotation of the cover body 23 in a state where the cover body 23 covers the filth inlet 16, that is, in a state where the cover body 23 is closed; and a lid body lock releasing mechanism for releasing the lock.

The lid lock mechanism 24 includes: a cover key 20; and a cover key hooking part 36 provided on the upper part 19 of the housing body. The cover button 20 is provided at a lower front portion of the cover 23. A cover button hook (hook)20h is formed at the lower end of the cover button 20. The cover key hook 20h operates integrally with the cover key 20.

The cover key hooking portion 36 is formed at the upper end of the housing body upper portion 19. In a state where the cover 23 is closed, the cover key hooking portion 36 engages with the cover key hook 20 h.

The lid lock release mechanism includes: a cover button 20 belonging to the operation section for releasing the lock; and an opening operation part for putting a hand thereon to rotate and open the lid body 23 after the lock is released.

The lid 23 has a lid handle 18 as an opening operation portion on the front surface side of the lid 23. The cover handle 18 is disposed above and near the cover button 20.

When a filth is thrown into the filth inlet 16, the user releases the cover locking mechanism 24 to open the cover 23. Fig. 14 is a perspective view showing the releasing operation of the lid lock mechanism 24.

As shown in fig. 14, when the user places four fingers other than the thumb on the lid handle 18 with one hand and presses the lid key 20 with the thumb, the lid key hook 20h moves in the pressing direction together, and the engagement with the lid key hooking portion 36 is released, and the locking of the lid lock mechanism 24 is released. The user places four fingers other than the thumb on the lid handle 18, presses the lid button 20 with the thumb to unlock the lid handle 18, and lifts the lid handle 18. Thereby, the cover 23 is rotated toward the back side, and the filth inlet 16 is opened.

After the filth is put into the filth inlet 16, the user closes the cover 23. The cover key hook 20h returns to the original position and engages with the cover key engaging portion 36 again, and the cover lock mechanism 24 is locked.

The cover lock mechanism 24 releases the engagement of the cover key hook 20h with the cover key hooking portion 36 only while the cover key 20 is pressed. In other words, the cover lock mechanism 24 is again locked by the user simply releasing the thumb from the cover button 20.

Therefore, in order to unlock the lid lock mechanism 24 and open the lid 23, the lid button 20 is pushed in an inner radial direction substantially orthogonal to the rotational direction of the lid 23, and the lid handle 18 is lifted to rotate the lid 23. This makes it very difficult for a child who does not want to open the lid 23 consciously and wisely. Therefore, the child can be prevented from opening the cover 23 by mistake and the handle can be prevented from extending into the cover.

However, if an adult operates with awareness of opening, the locking can be simply released by one hand to open the cover 23, and the waste can be easily disposed of at the waste inlet 16.

Further, according to the present embodiment, the user can put four fingers other than the thumb on the lid grip 18 from above with one hand as shown in fig. 14, and press the lid key 20 located below near the lid grip 18 with the thumb. That is, the operator can release the lock in accordance with the natural finger-holding motion.

More specifically, when four fingers are placed on the cover handle 18 from above and the fingers are gripped with the four fingers as fulcrums, the cover button 20 is positioned on a trajectory along which the remaining thumb travels most naturally in terms of ergonomics. This makes it easier and more comfortable to unlock and rotate the lid 23.

Next, a waste treatment apparatus 41 according to another embodiment of the present invention will be described with reference to fig. 15 to 17. Fig. 15 is a side sectional view showing a waste treatment apparatus 41 according to another embodiment of the present invention, in which a sealing door 53 is closed. Fig. 16 is a side sectional view showing a waste treatment apparatus 41 according to another embodiment of the present invention, in which a sealing door 53 is opened. Fig. 17 is a perspective view of the sealing mechanism 48 shown in fig. 16 viewed from a diagonally downward direction. In the following description, the same components as those of the embodiment described with reference to fig. 1 to 14 are denoted by the same reference numerals as those of fig. 1 to 14, and detailed description thereof is omitted.

Referring to fig. 15 to 17, the waste treatment apparatus 41 includes: a filth input port 16 for inputting the filth D; a cylindrical membrane 15 extending downward from the waste inlet 16 and having a lower end closed by a closing knot 26; a waste storage body 43 for storing the waste D fed from the waste inlet 16 together with the membrane 15; and a cover 23 covering the waste inlet 16 from above.

The filth storage body 43 is a hollow container for storing the filth D discarded inside the membrane 15, and is divided into a storage body lower portion 47 and a storage body upper portion 49. The housing body lower portion 47 has a bottom portion 47b on the lower end side. Further, a slope 42 is provided on the front side of the bottom 47 b. The inclined surface portion 42 is provided on the bottom portion 47b so as to form an inclined surface whose height in the vertical direction decreases from the front side toward the rear side. An opening is formed at the upper end of the lower housing body 47. The lower end side of the upper part 49 of the storage body covers the opening part of the upper end of the lower part 47 of the storage body. Further, a waste inlet 16 is formed at the upper end of the upper part 49 of the housing body.

A cylindrical column 44 is provided at the upper rear part of the upper part 49 of the housing body. The cylindrical column 44 is a hollow column extending vertically downward from the upper end of the upper housing body 49. Further, the diaphragm cutter 38 is attached to the lower end of the cylindrical column portion 44. Here, as shown in fig. 15 to 16, the vertical length of the cylindrical column portion 44 is set so that the vertical height of the film cutter 38 attached to the lower end portion of the cylindrical column portion 44 is equal to the main body hinge 31 or lower than the main body hinge 31. This structure will be briefly described below.

As described above with reference to fig. 13, when the waste D stored in the waste storage main body 43 and overflowing, is to be discarded, the user first opens the storage main body upper portion 49 completely to bring the waste treatment device 41 into the state shown in fig. 13. Then, the film 15 is cut by the film cutter 38. Here, when the length of the cylindrical column portion 44 in the vertical direction is less than the above length, the film cutter 38 is retracted into the internal space of the housing body upper portion 49 in a state where the housing body upper portion 49 is opened. This makes it difficult for the user to cut the film sheet 15. Therefore, as described above, in a state where the housing body upper portion 49 is opened, the length of the cylindrical column portion 44 in the vertical direction is set so that the position of the film cutter 38 protrudes outside the housing body upper portion 49. The configurations of the housing body lower portion 47 and the housing body upper portion 49 other than the inclined surface portion 42 and the cylindrical column portion 44 are the same as those of the above-described embodiment.

Inside the upper part 49 of the housing body, an openable and closable sealing mechanism 48 is provided for sandwiching and blocking the membrane 15 between the waste inlet 16 and the stored waste D, as in the above-described embodiment. The sealing mechanism 48 includes: a sealing door abutting part 55 connected to the lower part of the diaphragm mounting part 12 provided above the upper part 49 of the accommodating body; and a sealing door 53 located below the sealing door engaging portion 55, and forming a film sheet sandwiching portion by engaging with the sealing door engaging portion 55. The sealing door engaging portion 55 is an annular member provided along an inner diameter surface of the tubular core portion 27 described later below the diaphragm mounting portion 12. The sealing door 53 is a plate-shaped member larger than the center hole of the sealing door engaging portion 55, and covers the center hole of the sealing door engaging portion 55 from below.

In the present embodiment, the sealing door 53 forms a film sheet holding portion together with the sealing door engaging portion 55 at the front end portion, and is pivotally supported at the sealing door engaging portion 55 at the rear end portion with the sealing mechanism hinge 45 as a fulcrum. That is, the opening and closing operation of the sealing door 53 is realized by rotation. As shown in fig. 15, the sealing door 53 engages with the sealing door engaging portion 55 in a closed state to sandwich the diaphragm 15. In the same manner as in the above-described embodiment, the remaining ventilation path that is a factor of odor transmission is blocked. The following description relates to a film sheet sandwiching portion formed by the sealing door 53 and the sealing door abutting portion 55.

The diaphragm sandwiching portions of the sealing door 53 and the sealing door engaging portion 55 include stepped convexo-concave shapes, and the sealing door 53 engages with the sealing door engaging portion 55 at the closed position. Specifically, a sandwiching surface 53c that abuts the diaphragm 15 is formed in the diaphragm sandwiching portion of the sealing door 53. A sandwiching surface 55c that abuts the diaphragm 15 is formed in the diaphragm sandwiching portion of the opposing sealing door abutting portion 55.

The sandwiching surface 53c formed in the sealing door 53 is composed of: a front end region corresponding to the upper surface of the sealing door 53Face 53 of_c1(ii) a On the surface 53_c1Front end of (3) and face 53_c1A surface 53 extending downward at substantially right angles and having an arc surface formed over the entire front end of the sealing door 53_c2(ii) a On the surface 53_c2Lower end of (3), and face 53_c2Connected at a substantially right angle to extend forward and form a connecting surface 53_c2Face 53 of a substantially right angle corner_c3。

Further, the sandwiching surface 55c formed in the sealing door abutting portion 55 is composed of: at the upper end of the diaphragm clamping part, the diaphragm clamping part is arranged in a mode of being approximately orthogonal to the axis O and is closed with the surface 53_c1Substantially parallel faces 55_c1(ii) a On the surface 55_c1Front end of (1), and face 55_c1Connected at a substantially right angle and extending downwards and forming a junction surface 53 when closed_c2Substantially parallel arc surfaces 55_c2(ii) a And on the surface 55_c2Lower end of (2), and face 55_c2Connected at a substantially right angle to extend forward and form a joining surface 53 when closed_c3Substantially parallel faces 55_c3。

The sealing mechanism 48 further includes a spring 69 for urging the sealing door 53 in the closing direction, and a spring cover (cover)46 for covering the spring 69. The spring 69 is a single tension coil spring that is extendable and retractable in the extending direction, and both ends of the spring 69 are connected to both left and right side edges of the sealing door engaging portion 55. The spring 69 is accommodated in a central region thereof in a spring guide (spring guide)63 provided below the sealing door 53. The spring guide 63 is a groove formed on the lower surface of the sealing door 53. The spring guide 63 is provided at the center portion in the front-rear direction of the lower surface of the sealing door 53 so as to be continuous along the left-right direction over the entire lower surface of the sealing door 53.

As described above, in the present embodiment, the spring 69 is formed of one tension coil spring, and the central region of the spring 69 is drawn on the lower surface of the sealing door 53 so as to be accommodated in the spring guide 63 provided on the lower surface of the sealing door 53. Accordingly, the sealing door 53 is stably urged in the left-right direction substantially uniformly by the spring 69. This point is explained below.

In a normal state, the spring 69 urges the sealing door 53 in the closing direction with the left and right side edges of the sealing door engaging portion 55 connected to both ends of the spring 69 as fulcrums and with a region along the entire left and right direction of the lower surface center portion of the sealing door 53 as a point of force. The spring 69 is formed by a single tension coil spring. Therefore, the spring 69 gives a substantially uniform spring force that is bilaterally symmetrical to the lower surface of the sealing door 53. Further, the spring 69 is hooked to the spring guide 63, and thus is stably fixed to a predetermined position below the sealing door 53. With these configurations, the sealing door 53 is stably urged in a substantially uniform manner in the left-right direction toward the sealing door engaging portion 55. That is, when the sealing door 53 is closed, the pressure contact force with the diaphragm is substantially uniformly distributed by the sealing door 53 and the sealing door abutting portion 55.

The sealing mechanism 48 is provided with two left and right spring covers 46. The spring cover 46 is a C-shaped member having a cross section and extending from the sealing door 53 to the sealing door engaging portion 55, and accommodates both side portions of the spring 69. The upper end of the spring cover 46 is pivotally supported by the sealing door engaging portion 55 with a hinge 50 provided near the connecting portion between the spring 69 and the sealing door engaging portion 55 as a fulcrum. The spring cover 46 is provided with a groove-like recess 51 recessed inward of the spring cover 46 from a side surface facing the sealing door 53. The groove-like recess 51 is a groove extending from the upper end to the lower end of the spring cover 46. The groove-like recess 51 is open toward the side edge of the sealing door 53. Both side walls of the groove are provided with rail-shaped claw portions 56. The claw portion 56 extends from the upper end portion to the lower end portion of the spring cover 46. The claw portion 56 is engaged with a hook portion (not shown) provided to protrude outward from the center portion of the side edge of the sealing door 53.

Here, the claw portion 56 and the hook portion of the sealing door 53 are hooked to each other so as to be slidable relative to each other along the extending direction of the spring cover 46. Accordingly, when the sealing door 53 is opened and closed, the sealing door 53 slides along the extending direction of the spring cover 46. As described above, the spring cover 46 is pivotally supported by the sealing door engaging portion 55. Therefore, the spring cover 46 can smoothly rotate along an arc-shaped path that follows the engaging portion between the sealing door 53 and the spring cover 46 in accordance with the opening/closing operation of the sealing door 53. The spring cover 46 is disposed on the left and right side edges of the sealing door 53 and the sealing door engaging portion 55 so that the spring 69 is covered in the groove-shaped recess 51 provided in the spring cover 46. With these configurations, the spring 69 is always accommodated in the groove-like recess 51 regardless of the opening and closing operation of the sealing door 53.

Next, a method of disposing the waste D in the waste treatment apparatus 41 according to another embodiment of the present invention will be described with reference to fig. 15 to 17. When the filth is discarded, the user opens the cover 23 first, and then throws the filth D into the membrane 15 through the filth inlet 16. Then, the hand is inserted into the filth inlet 16, and the membrane 15 is pushed down together with the filth D to push the sealing door 53 downward. In this way, the sealing door 53 is rotated so as to travel along the circular arc orbit indicated by the arrow a in fig. 16 with the sealing mechanism hinge 45 as a fulcrum, and the sealing door 53 is opened. The filth D pushed downward by the user passes through the space between the opened sealing door 53 and the sealing door abutting portion 55 together with the film 15. The dirt D passing through the sealing door 53 and the sealing door abutting portion 55 falls down along the film 15 as indicated by an arrow B in fig. 16, and is accumulated in the interior of the lower portion 47 of the housing body.

As described above, the inclined surface portion 42 is provided on the front side of the bottom portion 47b of the lower housing body portion 47. Therefore, as shown in fig. 16, when the waste D is discarded inside the storage main body lower portion 47, the waste D slides down toward the rear side of the storage main body lower portion 47 due to the inclined surface portion 42 provided in the region corresponding to the drop position of the discarded waste D as shown by the arrow C in fig. 16. Thus, the waste D can be prevented from being concentrated in the front area of the lower part 47 of the storage body, and the waste D can be uniformly accumulated in the lower part 47 of the storage body.

After disposing the filth D in the lower portion 47 of the storage body, the user takes his hand out of the filth inlet 16. In this way, the sealing door 53 is immediately closed to sandwich the diaphragm 15. The diaphragm 15 sandwiched by the sealing door 53 and the sealing door engaging portion 55 is bent at substantially right angles at two corner portions formed at the diaphragm sandwiching portion, as in the case of fig. 6. That is, an imaginary straight line connecting the upper end to the lower end of the diaphragm sandwiching portion is bent in a substantially horizontal direction in the diaphragm sandwiching portion. Thus, the residual ventilation path which is the main cause of odor transmission can be blocked at right angles, and odor transmission can be effectively blocked.

In the filth treatment apparatus 41 according to the present embodiment, the opening and closing operation of the sealing door 53 is performed by rotation about the sealing mechanism hinge 45 as a fulcrum. Therefore, when the user pushes the filth D into the filth storage body 43, the sealing door 53 can be easily opened, and the disposal work becomes easier.

The sealing mechanism 48 provided in the waste treatment apparatus 41 according to the present embodiment further includes the spring cover 46 covering the spring 69 as described above. The spring 69 is accommodated in the groove-like recess 51 provided in the spring cover 46 regardless of the opening and closing operation of the sealing door 53. With this configuration, when the user opens and closes the sealing door 53 to discard the filth, the diaphragm 15 is prevented from being wound around the springs 69 disposed on both the left and right sides of the sealing door 53 and damaged. Both side portions of the spring 69 housed in the spring cover 46 are guided so as to be constantly positioned inside the groove-like recess 51. With this, even when the spring guide 63 is not provided below the sealing door 53, the spring 69 can be prevented from falling off the sealing door 53.

In the present embodiment, the description has been given of the case where the sandwiching surface 53c and the sandwiching surface 55c of the diaphragm sandwiching portion corresponding to the sealing door 53 and the sealing door engaging portion 55 are formed by a plane and an arc surface intersecting each other at substantially right angles, but not limited thereto, and the surfaces may intersect each other at a predetermined angle such as an acute angle or an obtuse angle. The surfaces forming the sandwiching surfaces 53c and 55c may be configured as the sealing door 53 and the sealing door engaging portion 55 so as to have a surface configured by a plurality of flat surfaces or a plurality of curved surfaces or a flat surface and a curved surface.

In the present embodiment, the elastic member for urging the sealing door 53 in the closing direction is constituted by one spring 69 which is a tension coil spring, but not limited to this, and any type of spring or a plurality of springs may be used. Further, a rubber-based material or a resin-based material or a mixture of these materials may be used as the elastic member. Further, by incorporating a permanent magnet or an electromagnet into the sealing door 53 and the sealing door abutting portion 55, the sealing door 53 can be urged in the closing direction by a magnetic force.

Next, a film sheet housing cassette 54 used in a waste treatment apparatus 41 according to another embodiment of the present invention will be described with reference to fig. 18 and 21. Fig. 18 is a perspective view showing a film sheet accommodating case 54 according to another embodiment of the present invention. Fig. 19 is a perspective view showing a state where the film sheet 15 is removed from the film sheet housing case 54 shown in fig. 18. Fig. 20 is a side view of the film sheet storage case 54 in the state shown in fig. 19, viewed from the side. Fig. 21 shows a top view of the film sheet housing case 54 in the state shown in fig. 19, viewed from above the axis O of the tubular core 57.

The waste treatment device 41 includes a film sheet housing case 54 having a waste inlet 16 and housing the film sheet 15. The film sheet housing cassette 54 corresponding to the film sheet housing portion of the above embodiment includes: a cylindrical tubular core 57 defining the waste inlet 16; a tubular core flange 57f extending radially outward from a lower end portion of the tubular core 57; and a diaphragm restraining flange 59 in the form of a flange extending radially outward from the upper end of the tubular core 57.

As shown in fig. 18, the diaphragm 15 is folded into a bellows shape in a space between an axial upper end and an axial lower end of the tubular core 57 by the diaphragm suppressing flange 59 located at the upper end of the tubular core 57 and the tubular core flange 57f located at the lower end of the tubular core 57. Therefore, the elongated film 15 can be compressed and housed between the tubular core flanges 57f and the film suppressing flanges 59. Here, the diaphragm suppressing flange 59 has a radial dimension relatively smaller than that of the tubular core flange 57 f. With this, the membrane 15 can be led out beyond the outer edge portion of the membrane restraining flange 59, and the membrane 15 can be extended downward through the filth inlet 16 formed in the tubular core portion 57.

In the present embodiment, a notch 58 penetrating in the direction of the axis O of the tubular core flange 57f is provided in the outer edge portion of the tubular core flange 57 f. As shown in fig. 21, the notches 58 are provided in the tubular core flange 57f so as to be arranged at intervals of substantially 120 ° in the circumferential direction with respect to the axis O. The notches 58 provided at the 3 positions are provided in the tubular core flange 57f so as to have a substantially rotationally symmetrical shape with respect to the axis O.

The upper surface 60 and the lower surface 64 of the tubular core flange 57f are substantially parallel planar surfaces. Further, a rib (rib) portion 61 is provided on the upper surface 60 side. The rib 61 is constituted by: circumferential ribs (annular ribs) 61a extending continuously in the circumferential direction around the axis O in a predetermined radial direction (radial direction) position of the upper surface 60; a plurality of radial ribs (radial ribs) 61b radially extending from the outer peripheral surface of the tubular core portion 57 toward the circumferential rib 61a in the radial direction and arranged in a substantially uniform arrangement in the circumferential direction; and engaging rib 61_C1、61_C2The circumferential rib 61a radially extends from the outer edge of the tubular core flange 57f in the radial direction.

As shown in fig. 21, the engagement rib 61_C1(first engaging rib) 61_C2The (second engaging ribs) are arranged substantially uniformly on the upper surface 60 of the tubular core flange 57f at substantially 60 ° intervals in the circumferential direction with respect to the axis O. Here, the engagement rib 61_C1Is disposed at a position corresponding to one end side in the circumferential direction of the notch 58. That is, in the present embodiment, 3 engaging ribs 61 are provided as viewed from above the axis O_C1Is provided at the end portion of the notch 58 on the right rotational direction side. Furthermore, 3 of each rib portions for engagement, 6 in total, 61_C1、61_C2Arranged substantially equally at intervals of substantially 60 ° in the circumferential direction.

Next, a method of mounting the film sheet storage cassette 54 to the waste treatment apparatus 41 according to another embodiment of the present invention will be described with reference to fig. 15 to 22. Fig. 22 is an external view of a state where the film sheet housing case 54 is removed from the filth treatment apparatus 41 according to another embodiment of the present invention as viewed from above the axis O. The axis O in fig. 22 indicates the central axis of the tubular core 57 when the film sheet storage cassette 54 is attached to the waste treatment apparatus 41, and substantially coincides with the central axis of the inner peripheral surface 12a of the film sheet attachment portion 12. The axis O in fig. 22 is a line extending in the front-back direction of the paper.

As described above, the film mounting portion 12 forming a space for receiving the film housing case 54 is provided above the housing body upper portion 49. The diaphragm mounting portion 12 includes: a mounting portion inner peripheral surface 12a facing a side portion of the film sheet housing case 54 when the film sheet housing case 54 is mounted; and a mounting portion bottom surface 12b which is a flat surface and which abuts against a lower surface 64 of the tubular core flange 57f when the film accommodating case 54 is mounted. Here, as shown in fig. 15, when the film sheet accommodating case 54 is attached, the axis O of the attachment portion inner peripheral surface 12a substantially coincides with the axis O of the tubular core portion 57. A circular opening 12h is provided in the center of the mounting portion bottom surface 12b around the axis O, and communicates with the inner peripheral surface of the tubular core portion 57 forming the waste inlet 16. When closed as shown in fig. 22, the sealing door 53 is closed so as to cover the opening 12h from below.

A claw portion (main body side locking portion) 62 protruding inward in the radial direction (radially inward) from the mounting portion inner peripheral surface 12a is provided at a position from the mounting portion bottom surface 12b of the mounting portion inner peripheral surface 12a to a predetermined height in the upward direction of the axis O. In the present embodiment, 3 claw portions 62 are provided on the mounting portion inner peripheral surface 12a so as to be arranged at intervals of substantially 120 ° in the circumferential direction with respect to the axis O. The claw portions 62 provided at the 3 positions have a substantially rotationally symmetrical shape with respect to the axis O. Here, the claw portion 62 is formed such that the circumferential width of the claw portion 62 is smaller than the circumferential width of the cutout 58. This constitution will be described later.

When the film sheet housing case 54 is attached to the waste treatment apparatus 41, the user arranges the film sheet housing case 54 toward the inside of the film sheet attaching portion 12 with the tubular core portion flange 57f as the lower side, and aligns the positions of the claw portions 62 provided on the inner peripheral surface 12a of the attaching portion with the positions of the notches 58 provided on the outer edge portion of the tubular core portion flange 57 f. Then, the film sheet storage case 54 is pushed toward the mounting portion bottom surface 12 b. As described above, since the circumferential width of the claw portion 62 is smaller than the circumferential width of the notch 58, the claw portion 62 passes through the notch 58, and the lower surface 64 of the tubular core portion flange 57f and the mounting portion bottom surface 12b are brought into contact with each other.

Next, the user rotates the film accommodating case 54 in the circumferential direction in the right rotational direction as viewed from above the axis O. In this way, the outer edge portion of the tubular core flange 57f enters the space between the claw portion 62 and the mounting portion bottom surface 12 b. Then, the claw portion 62 and the engaging rib 61_C2The film sheet housing case 54 is rotated until the rotation of the film sheet housing case 54 is restricted by the abutment (second engagement rib). In this way, the film sheet storage cassette 54 is attached to the waste treatment apparatus 41.

In a state where the film sheet storage cassette 54 is attached to the waste treatment apparatus 41, the claw portions 62 provided in the waste treatment apparatus 41 are engaged with the outer edge portion of the tubular core portion flange 57 f. This prevents the film sheet accommodating case 54 from jumping out of the film sheet mounting portion 12. That is, the film sheet storage cassette 54 of the present embodiment includes a coupling mechanism (cassette-side locking portion) for attaching to the waste treatment apparatus 41, and the coupling mechanism is constituted by an outer edge portion of a tubular core portion flange 57f engaging with a claw portion 62 (main body-side locking portion) provided in the waste treatment apparatus 41, and a notch 58 for introducing coupling/decoupling of the film sheet storage cassette 54. According to this embodiment, the film sheet housing case 54 can be prevented from falling off in a state where the housing body upper portion 49 is opened as shown in FIG. 13.

When the film storing cassette 54 is detached from the waste treatment apparatus 41, the user rotates the film storing cassette 54 in the circumferential direction in the left rotational direction as viewed from above the axis O. Thus, the claw portion 62 and the engaging rib 61_C1The first engaging ribs abut against each other, and the rotation of the film sheet accommodating case 54 is restricted. Here, as previously describedDue to the engagement rib 61_C1Provided at the end of the notch 58 on the right-hand rotation direction side, and therefore, engages with the claw 62 and the engaging rib 61_C1While abutting against each other, the position of the claw portion 62 roughly coincides with the position of the notch 58. Therefore, the film accommodating case 54 can be pulled up from the film mounting portion 12 and removed.

The film sheet storage cassette 54 and the waste treatment apparatus 41 having such a configuration can facilitate the replacement and installation of the film sheet storage cassette 54. That is, when the film sheet accommodating case 54 is connected or disconnected, the user simply sets the film sheet accommodating case 54 in the film sheet mounting portion 12 and rotates it as described above. Therefore, when the film 15, which is a consumable product, is completely used, the user can replace the film sheet housing case 54 by a simple operation, and install a new film sheet housing case 54 again by a simple operation. Further, since the connection mechanism between the film sheet storage magazine 54 and the waste treatment apparatus 41 is realized by such a simple configuration, the user can easily understand the attaching/detaching method of the film sheet storage magazine 54 without referring to the operation procedure described in the specification or the like.

In the present embodiment, the coupling mechanism (cassette coupling mechanism) for attaching the membrane accommodating cassette 54 to the waste treatment apparatus 41 is configured by the outer edge portion (cassette-side locking portion) of the tubular core flange 57f engaged with the claw portion 62 (main body-side locking portion) provided in the waste treatment apparatus 41 and the notch 58 (cassette-side locking portion) for introducing the coupling/releasing of the membrane accommodating cassette 54, but the present invention is not limited thereto, and the coupling mechanism may be configured by any type of coupling member attached to the membrane accommodating cassette 54 and/or the waste treatment apparatus 41. Alternatively, the film sheet housing case 54 may be mounted only in the film sheet mounting portion 12 without connecting and engaging the film sheet housing case 54 to the waste treatment device 41.

In the present embodiment, although only the case where the film sheet housing case 54 is used in the waste treatment apparatus 41 is described, the present invention is not limited thereto, and the film sheet housing case 54 may be used as an independent finishing member in other applicable waste treatment apparatuses.

In another embodiment, the filth treatment device may further include a rotating plate rotatably attached to a central portion of a bottom portion of the lower portion of the housing body, and the filth discarded in the filth treatment device may be supported from below by the rotating plate together with the membrane. According to the structure, when a user discards the filth in the filth treatment device, the discarded filth is accumulated on the rotating plate at the bottom of the lower part of the accommodating body along with the membrane. When the filth stored in the filth accommodating body is overflowed, the user twists the membrane in the area between the filth and the filth inlet by rotating the rotating plate, and cuts the twisted part of the membrane compressed by twisting by using the membrane cutter, so that the filth and the membrane accommodated in the membrane can be taken out from the filth accommodating body. Therefore, when the filth overflowing in the filth accommodating body is taken out from the filth accommodating body, a user can easily cut the diaphragm by using the diaphragm cutter. Further, it is possible to prevent the odor of the filth contained in the film sheet from leaking to the outside during the operation of taking out the filth.

In another embodiment, the filth treatment apparatus may further include an adhesive tape (tape) storage unit attached to the vicinity of the film cutter. According to this configuration, when the filth stored in the filth storage main body and overflowing, is discarded, the user can cut the film by the film cutter, and the opening of the cut film is sealed by the adhesive tape stored in the tape storage part. Therefore, when the user takes the filth which has been overflowed by the filth accommodating body out of the filth accommodating body, the odor can be prevented from leaking from the filth accommodated in the membrane. The adhesive tape housing and the film cutter may be integrally attached to the filth housing body in such a manner that the user cuts the film and seals the opening of the film with the adhesive tape. According to this configuration, the user can simultaneously cut the membrane and seal the opening of the membrane, and thus the operation of removing the filth can be performed easily and quickly.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and changes may be made to the illustrated embodiments within the same scope or equivalent scope as the present invention.

[ Industrial Applicability ]

The invention provides a filth processing device capable of preventing a film sheet storage box from falling off, which can be expected to be widely applied to industrial products such as a diaper processing device for infants.

Claims (7)

1. A waste treatment apparatus is characterized by comprising:

a filth receiving body which is provided with a membrane mounting part at the upper part and is used for storing the discarded filth;

a film sheet storage case having: a cylindrical tubular core part, the upper end of which forms a filth inlet; a lower flange extending radially outward from a lower end portion of the tubular core; and a cylindrical diaphragm disposed so as to surround the tubular core portion, and compressed and housed in an axial direction of the tubular core portion; and

a cassette connecting mechanism for detachably mounting the film accommodating cassette to the film mounting portion;

the cartridge connecting mechanism is composed of the following components:

a body-side engaging portion provided on the diaphragm mounting portion; and

and a cassette side locking part which is arranged on the lower flange and is clamped with the body side locking part to connect the membrane accommodating cassette with the filth accommodating body.

2. The filth treatment apparatus according to claim 1, wherein the body-side locking portion includes a protruding portion that protrudes radially inward;

the cassette-side locking part includes: the film accommodating case is engaged with the protruding portion to prevent the film accommodating case from moving upward in a state where the film accommodating case is connected to the filth accommodating body.

3. The filth treatment apparatus according to claim 2, wherein the protruding portion is formed of a claw portion protruding radially inward from an inner peripheral surface of the membrane attaching portion at a predetermined height position above a bottom surface of the membrane attaching portion;

the cartridge-side locking portion includes:

notches having a larger circumferential width than the claw portions, provided at circumferential positions corresponding to the claw portions, and recessed radially inward from outer edges of the lower flanges; and

the outer edge of the lower flange is engaged with the claw portion in a state where the film accommodating case is connected to the filth accommodating body.

4. The filth treatment apparatus according to claim 3, wherein the claw portions and the notches are provided at a plurality of positions and are arranged at equal intervals in a circumferential direction with respect to a central axis of the tubular core portion.

5. The filth treatment apparatus according to claim 3, wherein the cassette-side locking part further comprises: an engaging rib extending radially inward from an outer edge of the lower flange on an upper surface of the lower flange;

the engaging rib engages with the claw portion to restrict rotation of the film sheet storage case when the film sheet storage case is connected to the filth storage body and the film sheet storage case is rotated in the circumferential direction.

6. The waste treatment apparatus according to claim 5, wherein the engaging rib is formed of: a 1 st engagement rib portion disposed at one circumferential side end of the notch; and the 2 nd engages with the rib, from the 1 st engages with the rib and separates the disposition with the predetermined distance towards another side of the peripheral direction;

when the claw part is abutted with the 1 st clamping rib part, the positions of the claw part and the notch are consistent, and the film sheet accommodating box can be detached from the film sheet mounting part;

when the claw part is abutted with the 2 nd clamping rib part, the claw part is clamped with the outer edge part of the lower flange to prevent the membrane accommodating box from moving upwards.

7. The waste treatment apparatus of claim 5, wherein above the lower flange there are provided: an annular rib portion extending continuously in a circumferential direction around the central axis at a predetermined position on a radially inner side of an outer edge of the lower flange, and connected to the engaging rib portion; and a plurality of radial ribs extending radially from the tubular core to the annular rib.