CN102232814B - Electric vacuum cleaner - Google Patents

Abstract

The invention provides an electric vacuum cleaner. In the prior art, since rotation of a rotation connecting part performs angle maintenance via blocking, in order to guarantee maintenance force during use, blocking force needs to be improved, and greater force is needed in occasion of rotation of the rotation connecting part by a user, use convenience is caused to be reduced. A rotation connecting part (200) is provided with a locking mechanism, the locking mechanism makes a locking protrusion (225) of a removing button (220) and a locking groove (226) of a cover body (221) respectively be abutted in a mode of inclining in a specified angle related to the direction of a rotating shaft.

Description

electric vacuum cleaner

technical field

The present invention relates to an electric vacuum cleaner, and more particularly to an electric vacuum cleaner provided with another suction port in addition to the substantially T-shaped suction port for the floor.

Background technique

In a conventional electric vacuum cleaner, as disclosed in, for example, Patent Document 1 (JP-A-2000-300484), an attachment for bending an extension pipe is provided between the handle and the extension pipe. This bending fitting is composed of two L-shaped bend pipes, and these two bend pipes are rotatably connected. And, by turning this elbow, the cleaning of the bottom of a bed or a table, or the upper part of an air conditioner etc. is performed.

In addition, as shown in Patent Document 2 (Japanese Unexamined Patent Application Publication No. 2002-253456), the following electric vacuum cleaner is proposed: a rotatable joint is provided between the upper extension pipe and the lower extension pipe, thereby enabling cleaning under the sofa or bed. Waiting for cleaning.

In addition, as shown in Patent Document 3 (Japanese Unexamined Patent Application Publication No. 2007-44267), an electric vacuum cleaner is proposed in which a connecting pipe is connected to the suction port through a connecting part, and the connecting pipe is rotated around the rotation axis of the connecting part to The suction port side of the suction port can perform cleaning of an air conditioner, an upper part of furniture, or the like.

Moreover, as shown in patent document 4 (Japanese Unexamined Patent Application Publication No. 2009-66332), electric vacuum cleaners are proposed in which a retractable accessory suction tool is attached to an extension pipe using a hook body.

In addition, as shown in Patent Document 5 (Japanese Unexamined Patent Publication No. 2009-297370), a vacuum cleaner is proposed that has a plurality of rotatable rotating connection parts and connecting pipes, and has a vacuum cleaner that can connect the rotating connection parts in both directions up and down. Attached suction port. When in use, the auxiliary suction port is connected to the front end of the extension pipe instead of the suction port for the floor, thereby cleaning the upper part of a high shelf or refrigerator, and by changing the connection direction of the rotating connection part, it is possible to clean a deep ceiling surface or a floor surface. When storing in a narrow space such as the bottom of a table where the space is narrow, it can be fitted with the side of the extension tube.

In addition, as shown in Non-Patent Document 1 (Hitachi Air Conditioning Household Appliances Co., Ltd., issued "HITACHI, Vacuum Cleaner, General Catalogue, 201-2", pages 7-8 in February 2010), the following vacuum cleaner is proposed: equipped with two The pipe between one of the joints is flexible, and the front end is equipped with an auxiliary suction port, and the auxiliary suction port has a brush that can rotate in a direction horizontal to the suction port (opening) surface. The auxiliary suction port has a substantially T-shaped front end when in use, which can improve cleaning efficiency and a sense of stability, and a substantially I-shaped front end when accommodated, which can be matched with the side of the extension pipe.

In addition, as shown in Patent Document 6 (Japanese Unexamined Patent Publication No. 2009-261432), the following vacuum cleaner is proposed: it has a plurality of rotatable rotating connection parts and a telescopic connecting pipe, and a double blocking mechanism is provided on the rotating connecting parts. , a blocking mechanism that can release its function by pressing the release button, with an attached suction port that is pushed back to the specified position by the force-reinforcing mechanism.

However, in the electric vacuum cleaner described in Patent Document 1, since the extension pipe bending fitting as the rotating part is located only between the handle and the extension pipe, it is necessary to separate the heavy extension pipe and the floor for cleaning a high place. The inhalation device is raised to the same height as the upper surface of the high place, and since the position of the operating handle is also high, the wrist is forced to be raised for cleaning, which increases the burden on the body. In addition, when a simple suction device with a brush is used instead of a suction device for the floor, since the brush surface needs to be pressed against the upper surface of a high place, there is a need to further raise the extension pipe and the operating handle to a higher position. The problem of cleaning.

In addition, even in the electric vacuum cleaner described in the above-mentioned patent document 2, since a rotatable joint is provided between the upper extension pipe and the lower extension pipe, when cleaning a high place, it is necessary to suck the heavy extension pipe and the floor. The utensil is lifted to the same height as the upper surface of the high place, forcing the wrist to be raised for cleaning, resulting in an increased burden on the body.

In addition, in the electric vacuum cleaner described in the above-mentioned Patent Document 3, when cleaning a high place, since the connecting pipe is in contact with the cleaning part, it can only clean the depth corresponding to the length of the suction port, and cannot clean furniture or The depth such as the top surface of the refrigerator.

In addition, in the electric vacuum cleaner described in the above-mentioned Patent Document 4, there is no joint mechanism in the suction tool attached, so it is difficult to clean high places.

In addition, in the electric vacuum cleaner described in Patent Document 5, since the brush at the front end of the attached suction port is long in the axial direction, the cleaning efficiency decreases when the user reciprocates between the front and the back, or when the user When the reciprocating operation is performed left and right, the tube is partially bent, which makes it unstable and lowers the operability.

In addition, in the electric vacuum cleaner described in the above-mentioned non-patent document 1, there are two joint mechanisms on the auxiliary suction port. By adjusting the angle, it is possible to clean high shelves and the upper part of the refrigerator, and places with depths such as ceiling surfaces. parts. In order to adjust the angle of the joint mechanism, the user bends the pipe part with both hands. At this time, since there is no locking mechanism after angle adjustment, there is a problem that the angle deviates arbitrarily during cleaning. If the blocking force is increased to make the angle less likely to deviate, a large force is required to bend the joint mechanism.

In addition, in the electric vacuum cleaner described in the above-mentioned Patent Document 6, since the blocking mechanism of the attached suction port contacts with a force that maintains the rotation angle as much as possible, it takes a long time to push the released blocking mechanism (blocking ring) back to a predetermined position. High force, so more force needs to be applied when pressing the release button.

Contents of the invention

An object of the present invention is to provide an electric vacuum cleaner in which cleaning efficiency and operability are improved by using a suction tool that is bendable by a plurality of joint mechanisms.

The present invention is characterized in that at least one joint mechanism of an inhalation device that is bendable by a plurality of joint mechanisms is provided with a locking mechanism capable of locking bending and unlocking the bending by user's operation.

The present invention is characterized in that the inhalation device connectable to the handle operation part or the other end side of the extension pipe includes a connection pipe connectable to the handle operation part or the other end side of the extension pipe and a substantially T-shaped pipe connectable to the connection pipe. The second mouthpiece body, the second mouthpiece body is provided with the mouthpiece part that is formed on the side of the connecting pipe and the brush part that is formed on the opening part on the side opposite to the side of the connecting pipe of the mouthpiece part, and the brush part is formed so as to be able to The suction port swings.

The effects of the present invention are as follows.

According to the present invention, since the lock mechanism is provided on the joint mechanism of the inhalation tool, the swing of the joint mechanism can be reduced during use, operability can be improved, and the rotation angle can be easily adjusted.

In addition, according to the present invention, since the brush part can swing relative to the suction port part, and the brush part follows the uneven cleaning surface, cleaning efficiency can be improved.

Description of drawings

Fig. 1 is a perspective view of an inhalation device according to an embodiment of the present invention.

Fig. 2 is an exploded view of the handle-side rotational connection part of an embodiment of the present invention.

Fig. 3 is a P-direction view of a bowl-shaped cover according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a handle-side rotational connection portion according to an embodiment of the present invention.

Fig. 5 is a partially cutaway perspective view of a handle-side rotational connection part according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view of an inhalation device according to an embodiment of the present invention.

Fig. 7 is a perspective view of a release button of the handle-side rotational connection part according to the embodiment of the present invention.

FIG. 8 is a perspective view of a cover body on the locking mechanism side of the handle-side rotational connection portion according to an embodiment of the present invention.

Fig. 9 is a perspective view of a connecting pipe according to an embodiment of the present invention.

Fig. 10 is a perspective view of an extended connecting pipe according to an embodiment of the present invention.

Fig. 11 is a sectional view of a stopper of a connecting pipe according to an embodiment of the present invention.

Fig. 12 is a cross-sectional view of the stopper of the connecting pipe according to an embodiment of the present invention when it is pressed.

Fig. 13 is an exploded view of a front-end-side rotational connection portion according to an embodiment of the present invention.

Fig. 14 is a perspective view of the rotation and extension of the inhalation device according to one embodiment of the present invention.

Fig. 15 is an example diagram of cleaning a high place according to an embodiment of the present invention.

Fig. 16 is a perspective view of an inhalation device according to an embodiment of the present invention when it is separated.

Fig. 17 is a perspective view of an inhalation device according to an embodiment of the present invention when it is separated. (reverse assembly)

Fig. 18 is an example diagram of cleaning the ceiling according to an embodiment of the present invention.

Fig. 19 is an example diagram of cleaning a floor surface according to an embodiment of the present invention.

Fig. 20 is an external perspective view of an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 21 is an external perspective view and a cross-sectional view of a rotational connection portion on the front end side according to an embodiment of the present invention.

Fig. 22 is a cross-sectional view of a pivot connection portion on the front end side according to an embodiment of the present invention.

Fig. 23 is an external perspective view and a top sectional view of a rotary connection portion on the front end side according to an embodiment of the present invention.

Fig. 24 is a plan view and an upper sectional view of an inhalation device according to an embodiment of the present invention.

Fig. 25 is a perspective view when the mouthpiece forming part of one embodiment of the present invention is separated.

Fig. 26 is an external perspective view, a longitudinal sectional view, and a transverse sectional view of a mouthpiece forming portion according to an embodiment of the present invention.

Fig. 27 is an exploded perspective view of a mouthpiece forming part according to an embodiment of the present invention.

Fig. 28 is a perspective view of the external appearance when the front-end rotary connection part is connected to the handle operation part according to an embodiment of the present invention.

In the picture:

10-vacuum cleaner main body, 11-hose, 12-handle operation part, 13-extension pipe, 14, 15-suction mouth body, 100-suction appliance, 200, 400-rotation connection part, 300-connection pipe.

Detailed ways

The present invention is characterized in that it is equipped with an inhalation device that can be connected to the handle operation part or the other end side of the extension pipe, and the inhalation device is provided with a connection pipe that can be connected to the handle operation part or the other end side of the extension pipe (for example, the rotation of the bottom side). Connecting part and connecting pipe) and a substantially T-shaped second mouthpiece body (for example, a rotating connecting part) that can be connected to the connecting pipe, the inhalation device can be bent by using a plurality of joint mechanisms. According to the present invention, since the second nozzle body is substantially T-shaped, it is possible to improve cleaning efficiency without deteriorating operability. In particular, since the inhalation tool including the connecting pipe connected to the second mouthpiece body has a plurality of joint mechanisms, it is possible to clean a high place, thereby expanding the cleaning range. In addition, since the second mouthpiece body is provided with a plurality of joint mechanisms, it is possible to improve user convenience.

In addition, the present invention is characterized in that it has a substantially T shape that can be connected to the other end side of the handle operation part or the extension pipe, or can be connected to the handle operation part or the other end side of the extension pipe through a connecting pipe different from the extension pipe. The second suction body (for example, the rotating connection part), the second suction body can be bent by using a plurality of indirect mechanisms. According to the present invention, since the second nozzle body is substantially T-shaped, it is possible to improve cleaning efficiency without lowering operability. In particular, since the inhalation tool including the connecting pipe connected to the second mouthpiece body has a plurality of joint mechanisms, it is possible to clean a high place, thereby expanding the cleaning range. In addition, since the second mouthpiece body is provided with a plurality of joint mechanisms, it is possible to improve user convenience.

In addition, the present invention is characterized in that it includes a second mouthpiece body that can be connected to the other end side of the handle operation part or the extension pipe, or can be connected to the handle operation part or the other end side of the extension pipe through a connecting pipe different from the extension pipe. (for example, rotating the connection part), by inserting the opening end of the connection pipe forming the gap into the connection side opening end of the second suction body, connecting the connection pipe and the second suction body, by opening the connection side of the second suction body The end is inserted into the opening on the other end side of the handle operating part or the extension tube, and is connected with the handle operating part or the extension tube and the second suction body. According to the present invention, since the second mouthpiece body can also be connected to the connecting pipe that also forms the mouthpiece for the gap on the handle operation part or the extension pipe, the usability of the user can be improved.

In addition, the present invention is characterized in that it has a substantially T shape that can be connected to the other end side of the handle operation part or the extension pipe, or can be connected to the handle operation part or the other end side of the extension pipe through a connecting pipe different from the extension pipe. The second mouthpiece body (such as the rotating connection part), the width of the lengthwise direction of the mouthpiece forming part of the second mouthpiece body is shorter than the width of the lengthwise direction of the first mouthpiece body, and the short side of the mouthpiece forming part of the second mouthpiece body The width in the direction is approximately equal to or shorter than the width of the joint pipe, and the joint pipe can be connected to the other end side of the handle operation part or the extension pipe, or can be connected to the handle operation part or the extension pipe through a connecting pipe different from the extension pipe. Connect the other side. According to the present invention, since the width in the short side direction of the nozzle forming part of the second nozzle body is approximately equal to or shortened to the width of the joint pipe, when the second nozzle body is accommodated in a substantially I-shape, the accommodating property can be improved. . In addition, stability at the time of storage can also be improved.

In addition, the present invention is characterized in that at least one joint mechanism of the inhalation device that is bendable by a plurality of joint mechanisms is provided with a locking mechanism that locks bending and can release the locking of bending by a user's operation. According to the present invention, since the lock mechanism is provided on the joint mechanism of the inhalation tool, the swing of the joint mechanism can be reduced during use, thereby improving operability and making it easy to adjust the rotation angle.

In addition, the present invention is characterized in that the inhalation device that can be connected to the handle operation part or the other end side of the extension tube includes a connection tube that can be connected to the handle operation part or the other end side of the extension tube, and a substantially T tube that can be connected to the connection tube. The second mouthpiece body in the shape of a lettering, the second mouthpiece body is provided with the mouthpiece part that is formed in the connection pipe side, and the brush part that is formed in the opening part of the side opposite to the connection pipe side of the mouthpiece part, and the hairbrush part is formed to be able to Swing relative to the suction port. According to the present invention, since the brush portion follows the uneven cleaning surface, cleaning efficiency can be improved.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 20 is an external perspective view of an electric vacuum cleaner according to an embodiment of the present invention. In FIG. 20 , reference numeral 10 is a vacuum cleaner body equipped with an electric blower generating suction and a dust collecting part, and reference numeral 11 is a hose connected to the vacuum cleaner main body 10 through a hose joint 11a, and communicates with the dust collecting part. Indicated at 12 is a handle operation part having one end connected to the other end of the hose 11 and provided with a switch operation part 12a for turning on and off the electric blower. Mark 13 is an extension tube that is connected at one end to the other end of the handle operating part 12 and is telescopic, mark 14 is the suction body connected to the other end of the extension tube 13, and mark 15 is connected between the extension tube 13 and the suction body 14 or the handle The mouthpiece body between the operation part 12 and the extension tube 13. The hose 11 , the handle operating part 12 , the extension pipe 13 , the suction body 14 and the suction body 15 respectively have suction passages formed therein, so that the suction body 14 communicates with the dust collecting part of the vacuum cleaner main body 10 . When the user operates the switch operation part 12a to start the operation of the electric blower, suction is generated. This suction force reaches the mouthpiece body 14 , and the dust sucked from the mouthpiece body 14 is collected in the dust collection part of the cleaner main body 10 through the extension pipe 13 , the handle operation part 12 and the hose 11 . The suction body 14 has a rotating brush in the suction port (opening) that is rotated by suction airflow or by electric rotation, and is mainly used for cleaning the floor surface. The suction mouth body 15 has brushes around the suction mouth (opening), and is mainly used for cleaning the gaps of furniture or the top of furniture and air conditioners. However, the mouthpiece body 15 is not an essential structure.

The handle operation part 12 and the extension pipe 13, the extension pipe 13 and the suction body 14, and the handle operation part 12 and the extension pipe 13 and the suction body 15, and the extension pipe 13 and the suction body 14 and the suction body 15 are respectively detachably connected. When cleaning wooden floors, straw mats, and carpets, the cleaning is performed with the handle operation part 12, the extension pipe 13, and the nozzle body 14 connected. In the case of cleaning the gap between furniture or the upper part of furniture and the air conditioner, unload the extension pipe 13 from the handle operation part 12 or remove the suction body 14 from the extension pipe 13, and put the suction body 15 or the attached suction device 100 (Fig. 1 ) is connected to the handle operating part 12 or the extension pipe 13 for cleaning according to the purpose. Next, in this embodiment, the suction device 100 for a vacuum cleaner, which is effective for cleaning the upper part of furniture and high places such as air conditioners, will be described, but the place to be cleaned is not limited to high places.

FIG. 1 is an overall appearance view of an inhalation tool 100 for a vacuum cleaner according to an embodiment of the present invention. The inhalation tool 100 for a vacuum cleaner includes a rotary connection part 200 on the side (bottom side) of the handle operating part 12 or the extension pipe 13 , a connecting pipe 300 in the middle, and a rotary connection part 400 on the front end side. The middle connection part 300 is located between the rotation connection part 200 and the rotation connection part 400, and can expand and contract in the axial direction. However, expansion and contraction of the connection pipe 300 is not an essential structure, and the connection pipe 300 does not need to expand or contract. The rotary connection part 200 and the rotary connection part 400 have joint mechanisms that can rotate (bend) in the axial direction. The rotary connection part 200 has one joint mechanism, and the rotary connection part 400 has two joint mechanisms, but the number is not limited to this. If the suction mouth body 14 is used as the first suction mouth body, the rotating connection part 400 forms the second suction mouth body. Suction body 15 can also connect the connection portion of extension pipe 13 and the connection portion of suction body 14 at the suction (opening) end, but suction body 14 cannot connect the connection portion of extension pipe 13 at the suction (opening) end, and the rotating connection portion 400 cannot The connection portion of the extension tube 13 and the connection portion of the suction body 14 are connected to the suction port (opening) end. Here, the axial axis refers to the central axis of the substantially cylindrical connection pipe 300 .

FIG. 2 is an exploded perspective view of the rotating connection part 200 . As shown in Fig. 2 (A), the rotating connection part 200 of handle operation part 12 or extension pipe 13 side comprises: rear joint (pipe) 201, by handle operation part 12 or extension pipe 13 side and handle operation part 12 or extension The tube 13 communicates with a substantially cylindrical tube-shaped portion 205 and a bowl-shaped portion 206 opening in a direction perpendicular to the axial direction of the tube-shaped portion 205; a bowl-shaped cover 204 facing the bowl-shaped portion 206; and a front The joint (pipe) 202 is composed of a substantially cylindrical cylindrical portion 207 communicating with the connecting pipe 300 and a barrel-shaped portion 208 having an axis perpendicular to the axial direction of the cylindrical portion 207 . The axis of the barrel-shaped portion 208 becomes a rotation axis on which the rear joint 201 rotates relative to the front joint 202 . A flow path is formed inside the barrel-shaped portion 208 . The rotation shafts of the barrel-shaped part 208 do not pass through the inside of the barrel-shaped part 208 , but are formed one on each outside of the side surface of the barrel-shaped part 208 (two in total). Accordingly, it is possible to prevent the air flowing through the flow path in the barrel-shaped portion 208 from being obstructed by the rotation shaft of the barrel-shaped portion 208 . The cylindrical part 207 is connected to the connecting pipe 300 in the middle. That is to say, one end of the rear joint 201 can be connected to the handle operating part 12 or the extension pipe 13 , and one end of the front joint 202 can be connected to the connecting pipe 300 . And, the other end of the rear joint 201 and the other end of the front joint 202 are rotatably connected. In addition, the bowl-shaped portion 206 is connected to the handle operating portion 12 or the extension pipe by inserting and abutting the opening end of the cylindrical portion 205 on the opposite side to the bowl-shaped portion 206 into the opening end of the handle operation portion 12 or the extension pipe 13. 13 on. Therefore, it is preferable that the diameter of the outer surface of the opening end of the cylindrical portion 205 on the opposite side to the bowl-shaped portion 206 gradually narrows toward the front end, and that the diameter of the outer surface in the middle of the narrowing is the same as that of the handle operating portion 12 or the extension tube 13 . The diameter of the inside surface of the open end is comparable (consistent).

The barrel-shaped part 208 of the front joint 202 is a shape that substantially offsets the inside surfaces of the bowl-shaped part 206 of the rear joint 201 and the bowl-shaped cover 204, and is slidably (rotatably) connected to the bowl-shaped part 206 and the bowl-shaped cover 204. butt to assemble. The bowl-shaped part 206 and the bowl-shaped cover 204 have cutouts 209 and 210, respectively, and the front joint 202 is rotatable between an upper end 211 and a lower end 212 of the cutouts. As shown in FIG. 2(B), on the side opposite to the side where the front joint 202 abuts on the bowl-shaped portion 206, a substantially circular release button 220 constituting a locking mechanism for maintaining the rotation angle is arranged. 220 can be inserted into the hole of the substantially circular cover 221 and the urging mechanism 222 of the release button 220 . The urging mechanism 222 urges the release button 220 outward. The urging mechanism 222 is, for example, a coil spring, but may be another elastic body as long as it urges the release button 220 outward. However, the cover 221 is not an essential structure, and the bottom surface of the bowl 206 may be provided with a hole into which the release button 220 can be inserted, and the release button 220 and the urging mechanism 222 may be arranged between the bowl 206 and the front joint 202 . The side of the barrel-shaped portion 208 of the front joint 202 that abuts against the bowl-shaped portion 206 has a anti-rotation guide rail 223 protruding from the outer circumference to the center side, and the anti-rotation guide rail 223 passes through the hole opened on the bottom surface of the bowl-shaped portion 206 to the bowl-shaped portion. The side of the portion 206 on which the release button 220 is disposed protrudes, and is inserted into a detent groove 224 formed on the outer peripheral side of the release button 220 . The cover body 221 inserts the release button 220 into the central hole, so that the release button 220 is exposed to the outside, and is fixed on the bowl-shaped part 206 against the force of the force-applying mechanism 222. When rotating, the release button 220 rotates together with the front joint 202 , the cover 221 rotates together with the rear connector 201 . Between the front joint 202 and the bowl-shaped cover, a stopper ring 203 for producing a stopper feeling (click feeling) for notifying the rotational angle position is disposed. The blocking ring 203 is in the shape of a ring and has an anti-rotation protrusion 213 on the inner periphery, and has a blocking protrusion 214 (protrusion) on the outer periphery that produces a blocking feeling (click feeling). The anti-rotation groove 215 is provided on the bottom surface of the barrel-shaped portion 208 of the front joint 202 on the side abutting against the bowl-shaped cover 204 . However, due to this structure, the rotation range of the rear joint 201 and the front joint 202 is not 360 degrees, but is limited within a prescribed range.

In this way, in this embodiment, a locking mechanism is provided on the joint mechanism (rotation connection part 200 ) located on the side (bottom side) of the handle operating part 12 or the extension pipe 13 among the plurality of joint mechanisms. Since the user grasps (supports) the handle operation part 12 or the extension tube side 13 (bottom side) during cleaning, the load on the front end side of the joint mechanism located on the bottom side is greater than that on the front end side. Therefore, the swing of the joint mechanism located on the bottom side becomes larger than that of the joint mechanism located on the front side. Therefore, in the present embodiment, swinging can be effectively suppressed by providing a locking mechanism on the joint mechanism (rotation connection portion 200 ) located on the side (bottom side) of the handle operating portion 12 or the extension pipe 13 among the plurality of joint mechanisms.

As shown in FIG. 3 , on the inner bottom surface of the bowl-shaped cover 204, there is a substantially circular rib 216 that presses the blocking protrusion 214 on the outer periphery of the blocking ring 203 and bends the blocking ring 203. On this circular rib 216, a predetermined The angle is formed with a recess 217 that does not press into the blocking protrusion 214 of the outer periphery of the blocking ring 203 . Thus, the rear joint 201 and the front joint 202 can rotate around the central axis of the bowl-shaped portion 206 and the barrel-shaped portion 208, and the blocking protrusion 214 of the blocking ring 203 is accommodated in the recess 217 of the substantially circular rib 216. When 202 rotates, the blocking ring 203 rotates together with the front joint 202, and the blocking protrusion 214 rises in the concave portion 217 and bends in the radial direction of the ring, and reaches the rotation destination concave portion 217 while abutting against the substantially circular rib 216, thereby releasing the bending And accommodated in the recessed part 217, by this accommodation, the rotation angle position is fixed to some extent.

In this embodiment, the number of blocking protrusions 214 is two, and the number of recesses 217 is two, but the structure is not limited to this. Regarding the arrangement of the barrier ring 203, contrary to the present embodiment, a groove 215 for inserting the barrier ring 203 may be formed in the bowl-shaped cover 204, and a circular rib 216 for bending the barrier ring 203 may be formed in the front joint 202. In addition, the blocking ring 203 may be located on the side where the rear joint 201 and the front joint 201 abut, and in this case, the locking mechanism is formed on the side of the bowl-shaped cover 204 . In addition, the method of generating the click feeling is not limited to the method of this embodiment, and a coil spring may be used instead of the ring, or a steel ball may be used instead of the stopper protrusion, and the same effect can be obtained.

FIG. 4(A) is a cross-sectional view of the lock mechanism in a locked state, and FIG. 4(B) is a cross-sectional view of the lock mechanism in an unlocked state. As shown in FIG. 4(A), the release button 220 is biased toward the direction in which the locking protrusion 225 is embedded in the locking groove 226 formed on the cover body 221 by means of a biasing mechanism 222 such as a spring. together, the rotation angle (bending angle) is fixed. As shown in FIG. 4(B), during the period when the user presses the release button 220 against the biasing force of the biasing mechanism 222, since the locking protrusion 225 leaves the locking groove 226 of the cover body 221 and becomes non-fitting, the joint mechanism can be activated. turn. At this time, since the rotation angle is fixed to some extent by the blocking mechanism, the possibility of catching hands or fingers due to inadvertent rotation, or collision is reduced. In addition, since the user can rotate in stages with a feeling of resistance (click feeling) when turning, it is possible to adjust to a desired angle without hesitation. Since the locking mechanism is formed outside the side surface of the barrel-shaped portion 208 , that is, outside the wall surface forming the flow path, it is possible to prevent the air from obstructing the flow path in the barrel-shaped portion 208 .

5(A) is a partial sectional perspective view of the locking mechanism when the joint is linear in the locked state, and FIG. 5(B) is a partial sectional perspective view of the locking mechanism when the joint is rotated in the unlocked state. In this embodiment, the locking grooves 226 of the cover 221 are arranged at intervals of 22.5 degrees so that the rotation angle of the joint part is three-staged at 0 degrees, 22.5 degrees, and 45 degrees, but the structure is not limited to this. In addition, the abutting side surfaces of the lock protrusion 225 of the release button 220 and the lock groove 226 of the cover 221 are formed so that neither side is parallel to the direction of the rotation axis but inclined at a predetermined angle relative to the direction of the rotation axis, that is, a trapezoid. Therefore, if a certain large rotational force is applied in the locked state where the locking protrusion 225 is engaged with the locking groove 226 by the urging mechanism 222, the abutment side (inclined surface) of the locking protrusion 225 and the locking groove 226 starts to slide, and the lock is released. The button 220 moves against the urging force of the urging mechanism 222 , and the locking protrusion 225 leaves the locking groove 226 , so there is no need to worry about damage when excessive force is applied. However, it is not necessary to make the locking protrusion 225 and the locking groove 226 trapezoidal. If either of the locking protrusion 225 and the locking groove 226 at the contact point is an inclined surface, the other can be a vertical surface. Instead of the trapezoid, it may be formed as a triangle.

Fig. 6 (A) shows the A-A sectional view of Fig. 1 of the inhalation tool 100 when the rotary connection part 200 is linear, and Fig. 6 (B) shows the A-A sectional view of the inhalation tool 100 of Fig. 1 when the rotary connection part 200 is rotated 45 degrees . Arrows in FIG. 6 indicate the air flow flowing through the inhalation channel formed inside the inhalation tool 100 during use, and the intersection of dotted and dashed lines indicates the center of the rotational axis of the rotational connection part 220 . At this time, since the locking mechanism using the release button 220, the cover body 221, and the urging mechanism 222 is arranged approximately coaxially with the rotation axis of the joint mechanism, as shown in FIG. 6(B), the rotation is not hindered. Suction force can be maintained by air flow. According to this structure, the height of the locking protrusion 225 of the release button 220 and the locking groove 226 of the cover 221 is limited by the suction channel inside the joint mechanism, the width of the joint mechanism and the movement range of the release button 220 . The suction channel is related to the suction force, so it is necessary to secure a certain area, and the width dimension of the joint mechanism needs to be less than the specified size so as not to hinder cleaning of narrow places such as gaps in furniture. The movement range of the release button 220 needs to be at least a certain value so that there is no risk of unlocking due to a user's mistake, and it is set to 4 mm in this embodiment. In addition, the width (radial direction) of the locking protrusion 225 and the locking groove 226 is limited by the diameter of the bowl-shaped portion 206 of the rotational connection portion 220, but it needs to be set to a predetermined size or less so that the bowl-shaped portion 206 does not interfere with cleaning the narrow gap of the furniture. The place. The locking protrusion 225 and the locking groove 226 are located near the rotation axis of the joint mechanism, and excessive force may be applied when the inhalation device 100 is used. For the stress-bearing area, it is preferable to provide a plurality of contact points between the locking protrusions 225 and the locking grooves 226 to disperse the stress. In this embodiment, there are four contact points.

As shown in FIG. 7 , the release button 220 has a button portion 227 that is pressed by the user when the lock is released, and a circular flange portion 228 that is concentric with the central axis of the release button 220 . The flange portion 228 has a detent groove 224 on its outer periphery, and a locking protrusion 225 is formed on an upper surface on the side of the button portion 227 . In this embodiment, two anti-rotation grooves 224 are provided at opposite positions around the center axis of the release button 220 , and four locking protrusions 225 are provided at equal intervals around the center axis of the release button 220 . In addition, in order to prevent malfunction caused by deviation to one side when the release button 220 is operated, the anti-rotation groove 224 has an auxiliary wall 229 extending the shape of the anti-rotation groove 224 along the anti-rotation guide rail 223 of the front joint 202. And for the same purpose, the shape of the button portion 227 is made into a cylindrical shape, and the shape of the flange portion 228 is made into a circle. In addition, the locking protrusion 225 and the anti-rotation groove 224 are at different positions in the circumferential direction. In addition, the height of the lock protrusion 225 from the flange portion 228 is lower than the height of the release button 220 from the flange portion 228 .

As shown in FIG. 8 , the cover body 221 has a central hole into which the button portion 227 of the release button 220 can be inserted and a plurality of locking grooves 226 arranged around it, and has a catch on the outer peripheral side that matches the bowl-shaped portion 206 of the rear connector 201. Claw 230. In this embodiment, four claws 230 are arranged at equal intervals. The locking grooves 226 are respectively formed between a plurality of substantially trapezoidal peaks. The locking groove 226 is formed at a portion where the claw 230 is removed in the circumferential direction.

The connecting part of the handle operating part 12 or the extension tube 13 can be connected to the cylindrical part 205 of the rear joint 201 shown in FIG. The concave portion 218 (not shown) is located on the outer surface of the cylindrical portion 205 on the bowl-shaped portion 206 side. In addition, the connecting pipe 300 can be connected to the cylindrical part 207 of the front joint 202 by the connecting part 305, and the cylindrical part 207 has two holes 219 extending in the circumferential direction for receiving the protrusion 305 for preventing the connecting pipe from coming off.

As shown in FIG. 9 and FIG. 10 , the connection pipe 300 accommodates a hollow blade body 302 (inner pipe) in a hollow sheath body 301 (outer pipe) so as to be able to expand and contract freely. The cross-sectional shape of the connecting portion 305 of the sheath 301 is substantially circular, and the cross-sectional shape of the sheath 301 other than the connecting portion 305 is substantially square. Recesses 309 are formed at equal intervals on the outer lower surface of the blade body 302 . At the end portion of the sheath body 301 on the side where the blade body 302 expands and retracts, a stopper 303 is provided that is rotatable about a shaft 304 in the radial direction. On the outer periphery of the other end side (connecting portion 305 ) of the sheath body 301 is formed a detachment prevention protrusion 305 , and on both sides of the front end of the blade body 302 are also formed detachment prevention protrusions 306 extending in a direction perpendicular to the axial direction. The anti-falling protrusions 306 are respectively formed in two on both sides, staggered in the axial direction. The anti-dropping protrusions 306 may be formed one on each of the two side surfaces, or three or more. The front end of the vane body 302 has the narrowest width in the short side direction in the inhalation device 100, and is formed so as to be inclined (tapered) downward from the front end to the other end side. Or in the state on the extension pipe 13, cleaning of gaps and the like can be performed. That is, the tip portion of the blade body 302 forms a suction port (nozzle) for a gap. In addition, the front end portion of the blade body 302 serves as a connection portion with the rotation connection portion 400 , and a detachment prevention protrusion 306 when connected to the rotation connection portion 400 is formed on the connection portion. As in the present embodiment, it is preferable that the user can easily separate the connecting pipe 300 and the rotating connection part 200 , but it may be a connection structure in which the user cannot easily separate the connecting pipe 300 and the rotating connecting part 200 .

11 and 12 show the structure of the brake 303 . As shown in FIGS. 11 and 12 , the brake 303 uses an elastic body 307 such as a spring to apply force in the direction in which the claw portion 308 is embedded in a plurality of recesses 309 formed on the outer surface of the blade body 302 , thereby fixing the telescopic position of the blade body 302 . When the user pushes the stopper 303 against the force of the elastic body 307 with fingers, since the claw portion 308 is away from the concave portion 309 of the blade body 302 , the blade body 302 can freely expand and contract.

FIG. 13 shows the structure of the rotary joint 400 . FIG. 21(A) shows a perspective view of the appearance of the rotational connection portion 400 in a substantially T-shape, and FIG. 21(B) shows a cross-sectional view of the B-B section in FIG. 21(A). FIG. 22 is a cross-sectional view of the B-B section in FIG. 21(A) of the rotational connection portion 400 in a substantially I-shape. FIG. 23(A) shows a perspective view of the appearance of the rotational connection portion 400 in a substantially T-shape, and FIG. 23(B) shows a cross-sectional view taken along line C-C of FIG. 23(A). As shown in FIG. 13 , the rotating connection part 400 on the front end side includes: a cylindrical part 406 receiving the front end part (connecting part) of the blade body 302 of the connecting pipe 300; A rear joint (pipe) 401; a front joint (pipe) 402 composed of a substantially circular rotating portion 408 and a cylindrical portion 409 in cross section; a rotating cover 405 opposite to the rotating portion 408 of the front joint 402; a cover 404; A rotating shaft body (joint member) 424 connected by a connecting hole 423 supporting a shaft protrusion 427 of the front joint 402 ; The rotating portion 408 of the front joint 402 and the rotating cover 405 are assembled so as to be swingable relative to the rotating base portion 407 of the rear joint 401 in such a manner as to cover the rotating base portion 407 of the rear joint 401 . The front joint 402 has cylindrical shaft protrusions 427 on both side surfaces of the end portion opposite to the rotation portion 408 , and a cylindrical sliding protrusion 428 is provided above the shaft protrusions 427 .

The rotating part 408 of the front joint 402 and the rotating cover 405 have cutouts 410 , 411 respectively, and the front joint 402 can rotate until the upper end 412 and lower end 413 of the cutouts collide with the rear joint 401 . A stopper ring 403 is arranged in a connection gap between the rotation base part 407 and the rotation part 408 to provide a blocking feeling for notifying the rotation angle position. The stopper ring 403 has the same shape as the stopper ring 203 , has a detent protrusion 414 and a detent protrusion 415 (protrusion), and is inserted into a detent groove 416 provided on the side surface of the rotation base part 407 of the rear joint 401 .

On the rotating part 408 of the front joint 402, there is a substantially circular hole 417 that presses the blocking protrusion 415 on the outer periphery of the blocking ring 403 to bend the blocking ring 403, and a non-pressing hole 417 is formed at a predetermined angle in the circular hole 417. The recess 418 of the outer periphery of the blocking ring 403 blocks the protrusion 415 . In addition, claw holes 419 are formed in the rotating portion 408 , and the cover body 404 is fixed by fitting the claws 420 .

Thus, the rear joint 401 and the front joint 402 can rotate around the central axis of the rotating base part 407 and the rotating part 408, and the blocking protrusion 415 of the blocking ring 403 is accommodated in the recess 418 of the substantially circular hole 417. When turning, the blocking protrusion 415 rises in the concave portion 418 and bends in the radial direction of the ring, and reaches the rotation destination concave portion 418 while abutting on the substantially circular hole 417, thereby releasing the bending and being accommodated in the concave portion 418. , the rotation angle position is fixed to a certain degree.

In this embodiment, the number of blocking protrusions 415 is two, and the blocking places are two, but the structure is not limited to this. Regarding the arrangement of the barrier ring 403 , contrary to this embodiment, a groove 416 for inserting the barrier ring 403 may be formed in the front joint 402 , and a substantially circular hole 417 for bending the barrier ring 403 may be formed in the rear joint 401 . In addition, the blocking ring 403 may be located on the side where the rear joint 401 and the rotating cover 405 contact, and if two are provided on both sides, the force applied to each blocking ring can be distributed, thereby improving reliability. The method of generating the blocking feeling (clicking feeling) is not limited to the present embodiment, and the same effect can be obtained if a coil spring is used instead of the ring, and a steel ball is used instead of the blocking protrusion. However, due to such a structure, the rotation range of the rear joint 401 and the front joint 402 is not 360 degrees, but is limited within a predetermined range. On the left and right sides of the rotating shaft body 424 , a connecting hole 423 pivotally supported by the shaft protrusion 427 and connected to the front joint 402 , and a sliding hole 429 for fixing the sliding protrusion 428 and positioning the front joint 402 are formed. The sliding holes 429 are formed above the connection holes 423, and two are formed on each side. The rotating shaft body 424 can rotate in the direction of the upper surface of the front joint 402 with the connecting portion 432 formed by the shaft protrusion 427 and the connecting hole 423 as the axial front end, and the sliding protrusion 428 that is accommodated in a sliding hole 429 is in a sliding hole. 429 to abut against while bending the side of the rotating shaft body 424 outward, and accommodated in another sliding hole 429 of the rotating destination, the rotating angular position of the rotating shaft body 424 relative to the front joint 402 is fixed. The suction opening forming part 426 can rotate 360 degrees relative to the rotating shaft body 424 . And, as shown in FIG. 24(A) and (B), if the longitudinal direction of the suction port forming part 426 is approximately 90 degrees with respect to the axial direction of the rear joint 401 or the front joint 402, the rotational connection is viewed from the upper side. part 400, the rotating connection part 400 is roughly T-shaped. As shown in FIG. 24(E) and (F), if the longitudinal direction of the suction port forming part 426 is substantially aligned with the axial direction of the rear joint 401 or the front joint 402, when the rotational connection part 400 is viewed from the upper side, then The rotational connection part 400 is substantially I-shaped. Similar to Patent Document 4 and Non-Patent Document 1, when the inhalation tool 100 is attached to the side of the extension tube 13 and accommodated, it is preferable that the rotational connection portion 400 has a substantially I-shape.

As shown in FIG. 22 , the inner surface of the suction port (opening) of the suction port forming portion 426 is inclined from the end portion in the longitudinal direction of the suction port forming portion 426 to the central portion, and accordingly, the side opposite to the suction port (opening) of the suction port forming portion 426 The outer surface (upper surface) of the suction port forming portion 426 is also inclined from the end portion in the longitudinal direction to the central portion, and has a trapezoidal cross section. That is, when the longitudinal direction of the suction opening forming part 426 is seen from the lateral direction, it is left-right symmetrical. In addition, even when the short-side direction of the suction opening forming part 426 is seen from the lateral direction, it is bilaterally symmetrical. In this way, since the inner surface of the suction port (opening) of the suction port forming portion 426 is inclined, the turbulence of the air flow from the suction port (opening) of the suction port forming portion 426 toward the air hole 430 is reduced. In addition, a turning protrusion 425 is formed on the upper surface of the suction opening forming portion 426 at the central portion in the longitudinal direction of the suction opening forming portion 426 and at the central portion in the short side direction of the suction opening forming portion 426 . A ventilation hole 430 is formed inside the rotation protrusion 425 to allow ventilation. The vent hole 430 has a substantially circular shape, and a plurality of rotation protrusions 425 are formed around the vent hole 430 . The center of the circle on which the plurality of rotation protrusions 425 are formed serves as the rotation axis of the suction opening forming portion 426 relative to the rotation shaft body 424 . In addition, the center of the circle formed with the plurality of rotation protrusions 425 also coincides with the center of the air hole 430 and the center of the rotation hole 433 . The dotted line in FIG. 23(B) represents the center line of the suction opening forming part 426 in the longitudinal direction and the center line of the suction opening forming part 426 in the short direction. Preferably, the center of the suction opening forming part 426 is located in the center of the long side direction of the suction opening forming part 426 and the center of the short side direction of the suction opening forming part 426 with respect to the rotational axis of the rotating shaft body 424, that is, as shown in Figure 23 (B), it is located at the suction opening. The intersection point of the center line of the long side direction of the forming part 426 and the center line of the short side direction of the suction opening forming part 426 . That is to say, the distances from the center of rotation of the suction opening forming portion 426 relative to the rotating shaft body 424 to the both ends (ends) in the longitudinal direction of the suction opening forming portion 426 are equal, and the distance from the suction opening forming portion 426 relative to the rotating shaft body 424 is the same. The distances from the rotational axis of the suction port forming portion 426 to both ends (ends) in the short side direction of the suction port forming portion 426 are equal. In this case, the rotation axis of the suction opening forming portion 426 with respect to the rotation shaft 424 exists on the axis of the rear joint 401 , on the axis of the front joint 402 , or on the axis of the connecting pipe 300 . Accordingly, when the user performs reciprocating operations of the inhaler 100 from the front to the back and from the left to the right, the movement of the rotational connection part 400 is stabilized, thereby improving operability.

A thick dotted line in FIG. 22 indicates the axis of the cylindrical portion 406 of the rear joint 401 , and a thin dotted line indicates the axis of the cylindrical portion 409 of the front joint 402 . The front joint 402 is rotatable up to an angle α relative to the rear joint 401 . The angle α is about 5 to 10 degrees. Since the upper surface and the lower surface of the cylindrical portion 409 are approximately parallel, as shown in FIG. And the formation direction of the lower surface is also a direction forming an angle α to the upper side with respect to the axial direction of the rear joint 401 . In the state where the rotary connection part 400 is substantially I-shaped, it is preferable that the upper surface of the suction opening forming part 426 and the lower surface of the cylindrical part 409 face each other, and the distance between the upper surface of the suction opening forming part 426 and the lower surface of the cylindrical part 409 It is not less than 0mm and not more than 5mm. Preferably, the upper surface of the suction opening forming portion 426 and the lower surface of the cylindrical portion 409 are substantially parallel. In this case, the upper surface of the suction port forming portion 426 is in a direction forming an angle α upward with respect to the axial direction of the rear joint 401 . Therefore, it is preferable that the rotation shaft body 424 is rotated with respect to the cylindrical portion 409 around the shaft protrusion 427 until the upper surface of the suction opening forming portion 426 is in a direction that forms an angle α upward with respect to the axial direction of the rear joint 401 . As described above, the rotation angle of the rotation shaft body 424 relative to the cylindrical portion 409 can be determined by the mutual positional relationship between the connection hole 423 and the sliding hole 429 . In addition, when the suction port surface of the suction port forming part 426 is substantially parallel to the axial direction of the cylindrical part 409, the angle formed by the upper surface of the suction port forming part 426 and the suction port surface of the suction port forming part 426 is an angle α. In addition, as shown in FIG. 21 , it is preferable to extend from the connection portion (the center of the vent hole 430 ) between the suction port forming portion 426 and the rotating shaft body 424 , that is, the center of the suction port forming portion 426 in the longitudinal direction to the longitudinal direction of the suction port forming portion 426 . The length of the end (end surface), that is, 1/2 of the length in the longitudinal direction of the suction port forming part 426, the axial length of the cylindrical part 409, or the connecting part from the cylindrical part 409 and the suction port forming part 426 The length of the rotation axis (the center of the rotation hole 433) to the end (end surface) of the rotation part 408 side of the cylindrical part 409, or the rotation axis (the center of the rotation hole 433) from the connection part of the front joint 402 and the suction port forming part 426 The length of the rotation axis (axis center of the rotation portion 408 ) to the connecting portion of the front joint 402 and the rear joint 401 is approximately equal to or shorter than this. Thereby, the suction port of the suction port forming part 426 can be approached from the direction of the communication axis, and by arranging the suction port forming part 426 rearward, the overall length of the rotary connection part 400 can be shortened and the overall length of the inhalation tool 100 can be shortened, so it can be accommodated with a small volume. , so that the capacity can be improved. Since not only the rear joint 401 and the front joint 402 are rotated in the axial direction, but also the front joint 402 and the rotating shaft body 424 are rotated in the axial direction. Rotate in different directions, thus increasing accommodation. In addition, since the center of gravity on the front end side of the rear joint 401 is closer to the axis center of the front joint 402, the stability during storage is also enhanced.

As shown in Figure 23 (B), the suction opening forming part 426 is provided with a rotating protrusion 425 that is inserted into a rotating hole 433 on the bottom surface of the rotating shaft body 424 to connect the suction opening forming part 426, and can rotate in the direction of the rotating shaft. On the turning protrusion 425 , a stopper protrusion 435 that produces a blocking feeling for notifying the rotational angle position similarly to the stopper ring 203 and the stopper ring 403 is formed, and is accommodated in a recess 434 on the bottom surface of the rotation shaft body 424 . When the suction port forming part 426 rotates, the blocking protrusion 435 rises in the recess 434 and bends in the radial direction of the rotation hole 433 , and reaches the terminal end of the substantially circular wall 436 while abutting against the substantially circular wall 436 to release the bending. The next stopper protrusion 435 is accommodated in the recess 434, and by this accommodation, the rotational angle position is fixed to a certain degree. In addition, the blocking protrusion 435 also serves as a detachment-preventing claw to prevent the suction opening forming portion 426 from falling off from the rotating shaft body 424 .

Fig. 24 (A) shows the top view of the inhalation device 100 when the rotating connection part 400 is substantially T-shaped, and Fig. 24 (B) shows the top view of the rotating connecting part 400 when the rotating connecting part 400 is substantially T-shaped, and Fig. 24 ( C) shows the upper cross-sectional view of the inhalation device 100 when the rotating connection part 400 is substantially T-shaped, and Fig. 24 (D) shows the upper cross-sectional view of the rotating connecting part 400 when the rotating connecting part 400 is substantially T-shaped. ) shows a top view of the inhalation device 100 when the rotating connection part 400 is substantially I-shaped, and FIG. 24(F) shows a top view of the rotating connecting part 400 when the rotating connecting part 400 is substantially I-shaped. An upper sectional view of the inhalation device 100 when the connecting portion 400 is substantially I-shaped, and FIG. 24(H) shows an upper sectional view of the rotating connecting portion 400 when the rotating connecting portion 400 is substantially I-shaped. As shown in Figure 24 (E), (F), (G), (H), the width of the short side direction of the suction port forming part 426 and the width of the connecting part 431 formed by the rotating base part 407 and the rotating part 408, etc. (the width in the direction perpendicular to the axial direction) is approximately equal to or shorter than it. In addition, the width in the short-side direction of the suction port forming portion 426 may be substantially equal to or shorter than the width of the rear connector 401 or the width of the front connector 402 . In addition, the width in the short-side direction of the suction opening forming portion 426 may be substantially equal to or shorter than the maximum width of the connecting pipe 300 . In addition, the maximum width of the connection pipe 300 is formed at the connection portion 305 . Thereby, when the inhalation tool 100 is fitted and accommodated with the side surface of the extension tube 13, since the mouthpiece forming part 426 does not protrude and become an obstacle, the accommodability improves. In addition, if the user turns the suction port forming part 426 relative to the front joint 402 so that the long side direction of the suction port forming part 426 is in the direction along the axial direction of the rear joint 401 and the front joint 402, the suction port forming part 426 becomes substantially I-shaped. shape, it can clean deep narrow gaps. In addition, if the user turns the suction port forming part 426 relative to the front joint 402 so that the longitudinal direction of the suction port forming part 426 becomes a direction perpendicular to the axial directions of the rear joint 401 and the front joint 402, the suction port forming part 426 is rotated approximately T The shape of a letter can widen the cleaning surface. Since the cleaning surface in the front and rear direction (reciprocating direction of the front and the depth) of the user can be cleaned more, the number of times of walking back and forth can be reduced, thereby improving the cleaning efficiency. In addition, since the width in the longitudinal direction of the nozzle forming portion 426 is shorter than the longitudinal direction of the nozzle body 14 , it is possible to clean a gap where the nozzle body 14 cannot enter. In addition, since the friction surface in the left and right direction is reduced compared with the substantially I-shaped shape, the resistance is reduced, and the user's load on the handle can be reduced.

The cylindrical portion 406 of the rear joint 401 has a hole portion 421 for receiving the anti-slip protrusion 306 located at the front end portion of the blade body 302 of the connection pipe 300 . By inserting the front end (connecting portion) of the blade body 302 into the cylindrical portion 406, the anti-falling protrusion 306 is fitted into the hole portion 421 (the outer surface of the front end portion of the blade body 302 is in contact with the inner surface of the cylindrical portion 406 ). , the connection pipe 300 and the rotation connection part 400 are connected. Thereby, the user can easily connect and disconnect the connection pipe 300 and the rotary connection part 400 .

FIG. 25 shows a perspective view of the suction opening forming portion 426 when it is separated. On the suction port (opening) surface of the suction port forming portion 426, as in this embodiment, a brush 422 may also be provided on the end face of the notch, and the cleaning effect of cleaning and wiping can also be obtained by using the brush 422. The formation direction of the brush 422 may be the normal direction of the suction port surface of the suction port forming portion 426 , or may expand outward from the normal line direction of the suction port surface of the suction port forming portion 426 . Alternatively, the nozzle forming portion 426 may be divided into a brush base 438 and a nozzle portion 437 . That is to say, a plurality of engagement claws 439 are provided on the brush base 438 , and the engagement claws 439 can be installed on the suction mouth portion 437 by inserting the engagement claws 439 into the suction mouth portion 437 . Thereby, when the fur brush 422 wears and falls off, only the fur brush base 438 needs to be replaced, and the maintainability of the fur brush portion can be improved.

Figure 26 shows an embodiment where the brush base 451 is swingably mounted on the suction port 454, Figure 26(A) shows a perspective view of the suction port forming part 450, and Figure 26(B) shows a D-D sectional view of Figure 26(A) 26(C) and 26(D) show the E-E sectional view of FIG. 26(A), and FIG. 27 shows an exploded perspective view of the suction opening forming portion 450. The suction opening forming portion 426 in FIG. 25 is an embodiment in which the brush base 438 does not swing relative to the suction opening portion 437, and the suction opening forming portion in FIGS. 26 and 27 is an embodiment in which the brush base 451 swings relative to the suction opening portion 454. As shown in Figure 26 (B), the installation method of the brush base 451 and the suction mouth part 454 is to utilize the rotating shaft 452 provided on the two sides in the middle of the longitudinal direction of the brush base 451 and the center of the longitudinal direction of the suction mouth part 454. The fitting structure between the bearings 455 provided on both sides. The upper end portion of the brush base 451 is formed to be accommodated in the opening of the lower end portion of the suction mouth portion 454 . Thus, the brush base 451 is pivotally supported on the suction port 454 in the longitudinal direction of the brush base 451, and when the inhalation device 100 or the rotating connection part 400 is used, the suction port (opening) surface of the brush 453 moves along the It swings along the curve of the cleaning surface that is not flat, such as the upper part or the front of the air conditioner, or swings along the uneven concave-convex surface such as the upper surface of books of different heights stored on the bookshelf, and follows the cleaning surface, so it can Clean up more efficiently. However, the surface provided with the rotation shaft 452 is not limited to both sides in the longitudinal direction of the brush base 451, and may be both sides in the short direction of the brush base 451, or both sides in the longitudinal direction of the suction port 454, or the suction port 454. Both sides of the short side direction. Similarly, the surface provided with the bearing 455 is not limited to the two sides in the longitudinal direction of the suction port 454, and may be the two sides in the short direction of the suction port 454 or the length of the brush base 451 corresponding to the position provided with the rotation shaft 452. one of the two sides in the side direction, or one of the two sides in the short side direction of the brush base 451 . In addition, the position on the surface where the rotating shaft 452 and the bearing 455 are provided is not limited to the center of each surface (side), and may be deviated to either end of both ends.

In this embodiment, as shown in FIG. 26(C), the brush base 451 has a leakage prevention wall 456 extending toward the upper surface of the suction port 454 and a flange 457 extending outward from the outer surface of the brush base 451 . FIG. 26(D) shows a state where the brush base 451 is swung and tilted to one side with respect to the suction port 454 . At this time, on the rear end side (the right end in the figure) of the rotation direction of the brush base 451, the upper surface of the brush base 451 is farthest from the lower end of the suction port 454, but the upper end of the leakage prevention wall 456 is formed to be closest to the suction port. The inner surface of the lower end of 454 can reduce the suction leakage from between the brush base 451 and the suction port 454, thereby suppressing the decrease of the suction force from the lower opening of the suction port forming part 450. In addition, at this time, on the front end side (left end in the figure) of the rotation direction of the brush base 451, the upper surface of the brush base 451 is closest to the upper surface of the suction port 454, and at the same time, the side surface of the brush base 451 is away from the inside of the suction port 454. The side is the farthest, but by forming the flange 457 along the lower end of the suction port 454, the suction leakage from the gap between the side of the brush base 451 and the suction port 454 can be reduced, thereby suppressing the suction from the bottom opening of the suction port forming part 450. Input decreased.

FIG. 28 is a perspective view showing the appearance of the front-end-side rotational connection portion 400 connected to the handle operation portion 12 . The cylindrical part 406 of the rotary connection part 400 has a fitting part 441 having a shape in which the upper and lower sides of the outer surface correspond to the connecting part of the handle operation part 12 or the inner surface of the extension tube 13, that is, an R shape. It is preferable that the upper side and the lower side of the outer side surface of the fitting portion 441 gradually expand toward the rotation base portion 407 in the axial direction. The outer shape (diameter of the outer surface) of the cylindrical portion 406 on the opening side of the fitting portion 441 is smaller than the outer shape (diameter of the outer surface) of the fitting portion 441 . And, the cylindrical portion 406 of the rotating connection portion 400 is inserted into the connecting portion of the handle operating portion 12 or the inside of the extension pipe 13 in the same manner as the cylindrical portion 205 of the rear joint 201, and the connecting portion 441 and the connecting portion or extension of the handle operating portion 12 The inner surface of the tube 13 abuts, and the detachable claw (not shown) of the detachable clip provided on the handle operation part 12 or the extension tube 13 fits into the concave part 440 provided on the cylindrical part 406 . Thereby, the rotation connection part 400 and the handle operation part 12 or the extension pipe 13 are connected. Since the swivel connection part 400 can be used as an inhalation tool without being connected to the connection pipe 300, it is light in weight and free of burden, and can easily clean nearby places such as tables and low shelves.

FIG. 15 shows an example of cleaning a high place such as the upper surface of furniture or a refrigerator using the suction device 100 . FIG. 14 shows a perspective view of the inhalation device 100 in the state used in FIG. 15 . In FIG. 14 , the rotating connection part 200 on the handle side, the connecting pipe 300 in the middle and the rotating connecting part 400 on the front end side are connected by their respective connecting parts, and will not fall off easily by using the anti-off protrusion. The rotation connection part 200 on the handle side rotates at a rotation angle of 45 degrees, and the rotation position is fixed by a locking mechanism. In the rotation connection part 400 on the front end side, the connection part 431 formed by the rotation part 408 and the rotation base part 407 rotates a rotation angle of 45 degrees, and the rotation position is fixed to a certain degree by blocking. In addition, the shaft protrusion 427 and the connection The connecting portion 432 formed by the hole 423 is rotated relative to the axis of the connecting pipe 300 to a position where the suction port forming portion 426 comes to the lower side. In addition, the connecting pipe 300 in the middle is extended to the longest. As shown in Figure 15, by connecting one end of the extension pipe 13 to the handle operation part 12, and connecting the rotating connection part 200 to the other end of the extension pipe 13, for example, the upper surface of furniture and the upper surface of a common refrigerator can be cleaned. . The handle operation part 12 is located at a position lower than the furniture 900 , and one end of the extension pipe 13 connected thereto is also located at a position lower than the furniture 900 , and the other end (front end) of the extension pipe 13 is located above the furniture 900 . The extension pipe 13 is in a state where the other end side is inclined upward. The rotation connection part 200 connected to the other end of the extension pipe 13 rotates downward so that the connection pipe 300 connected to the rotation connection part 200 may follow the upper surface of the furniture 900 . By this rotation, the connecting pipe 300 is brought into a state along the upper surface of the furniture 900 . In addition, the rotary connection part 400 connected to the connecting pipe 300 rotates downward so that the front end of the front joint 402 faces the upper surface of the furniture 900 , and the brush 422 provided at the front end of the front joint 402 contacts the upper surface of the furniture 900 . Thereby, the upper surface of furniture and the upper surface of a normal refrigerator can be cleaned. In the case of this embodiment, even in the furniture 900 whose height dimension is 1800 mm and depth dimension is 600 mm, if the handle operation part 12 is raised to a height of about 1200 mm, it is easy to clean to the depth of the upper surface of the furniture 900. . At this time, although it is difficult to catch the cleaning surface in the field of vision, as shown in FIG. 26, in the case of a structure in which the front end of the rotary connection part 400 can be swung, the suction port (opening) surface follows the cleaning due to the swing of the brush base 451. On the surface, it can reduce the residual garbage, so that it can be cleaned more effectively.

In this embodiment, by providing a plurality of rotation connection parts such as the rotation connection part 200 on the handle side and the rotation connection part 400 on the front end side, the height position of the handle operation part 12 is located at a lower position than the high surface to be cleaned, Therefore, the burden on the user's wrist is small. In addition, since it can expand and contract between the rotating joints, it can also be used for high places with a short depth dimension.

In addition, if the rotating connection part 200 on the handle side is rotated during use, although in the prior art it is necessary to pull the inhalation device 100 near the handle which is easy to apply force, the connecting tube 300 is held with one hand, and the other hand Hold the extension tube 13 with your hand and apply force, but in this embodiment, since a locking mechanism is provided on the rotating connection part 200 on the handle side, there is no need to apply a large force when turning it, so the hand holding the handle operating part 12 It can be kept as it is, and the locked state can be released with the other hand, and the front end of the suction nozzle (for example, the suction nozzle forming part 426 ) can be gently pressed against the cleaning surface to make it rotate. Here, since the vacuum cleaner suction tool 100 can also be connected to the connection portion of the handle operation portion 12 , it can be used without connecting the extension pipe 13 . In addition, the connection method is not limited to the method using the anti-slip protrusion, and may be configured to be screwed or clamped to provide a firm connection.

In addition, as shown in FIG. 16 , the rotation connection part 200 on the handle side, the connecting pipe 300 in the middle, and the rotation connection part 400 on the front end side can also be separated. Although these parts utilize anti-off protrusions and will not fall off easily, they can also be used without connection. In addition, if a short suction port (not shown) is connected to the rotary connection part 200 on the handle side, it is suitable for cleaning the side.

As shown in FIG. The rotation connection part 400 is attached vertically (right and left) oppositely so that the fur brush 422 faces upward in a state connected to the connection pipe 300 . That is to say, the rotating connection part 400 can be freely assembled and disassembled relative to the connecting pipe 300 , so that the rotating connecting part 400 can rotate in different directions relative to the connecting pipe 300 . By connecting the turning connection part 400 to the connection pipe 300 in the opposite vertical direction (horizontal direction), the turning direction of the turning connection part 400 relative to the connection pipe 300 can be changed, thereby widening the cleaning range.

In this embodiment, if the brush 422 faces upward in the state connected to the connecting pipe 300, as shown in FIG. Since the connecting parts expand and contract, it is also possible to clean the ceiling surface of a deep narrow space that cannot be reached by the extension pipe 13 due to the interference of the furniture 900 or the like. At this time, furniture 900 etc. cover the line of sight, and it is difficult to catch the cleaning surface in the field of view. However, as shown in FIG. ) surface follows the cleaning surface, reducing residual garbage and enabling more effective cleaning.

The handle operation part 12 is located at a position lower than the ceiling 800 , and one end of the extension pipe 13 connected thereto is also located at a position lower than the ceiling 800 , and the other end (front end) of the extension pipe 13 is located near the ceiling 800 . The extension pipe 13 is in a state where the other end is inclined upward. The swivel connection part 200 connected to the other end of the extension pipe 13 is rotated downward along the ceiling 800 by the connection pipe 300 connected to the swivel connection part 200 . By this rotation, the connecting pipe 300 is brought into a state along the lower surface of the ceiling 800 . In addition, the rotary connection part 400 connected to the connecting pipe 300 is rotated upward so that the front end of the front joint 402 faces the ceiling 800 , and the brush 422 provided at the front end of the front joint 402 contacts the ceiling 800 . Thereby, the ceiling 800 can be cleaned. Furthermore, even if the ceiling 800 located above the furniture 900 does not interfere with the furniture 900 , the cleaning of the ceiling 800 can be performed while avoiding contact with the furniture 900 . In the case of this embodiment, even in the ceiling 800 with a height dimension of 2200 mm, if the handle operation part 12 is raised to a height of about 1400 mm, the ceiling 800 can be easily cleaned.

In addition, in this embodiment, as shown in FIG. 19 , it is possible to clean even deep gaps such as the bottom of the table 1000 and the floor where the space between them is narrow and the extension pipe 13 cannot enter. In this case, the rotation connection part 200 connected to the connection pipe 300 is attached so that it may rotate up and down reversely from the state shown in FIG.14, FIG.15, and FIG.18. In FIG. 14 , FIG. 15 , and FIG. 18 , the rotation connection part 200 connected to the extension pipe 13 is connected so that the connection pipe 300 is rotated downward relative to the extension pipe 13 . In FIG. 19 , on the contrary, the rotation connection part 200 connected to the extension pipe 13 is connected so that the connection pipe 300 is rotated upward with respect to the extension pipe 13 . At this time, the table 1000 and the like block the line of sight, and it is difficult to capture the cleaning surface in the field of view. However, as shown in FIG. The (opening) surface follows the cleaning surface, reducing residual garbage and cleaning more effectively.

The handle operation part 12 is located at a position higher than the table 1000, and one end of the extension pipe 13 connected thereto is also located at a position higher than the table 1000, and the other end (front end) of the extension pipe 13 is located near the floor surface 1300 below. The extension pipe 13 is in a state where the other end side is inclined downward. The rotation connection part 200 connected to the other end of the extension pipe 13 rotates upward with respect to the axial direction of the extension pipe 13 so that the connection pipe 300 connected to the rotation connection part 200 follows the floor surface 1300 . By this rotation, the connection pipe 300 is brought into a state along the floor surface 1300 . In addition, the swivel connection part 400 connected to the connecting pipe 300 rotates downward so that the front end of the front joint 402 faces the floor surface 1300 , and the brush 422 provided at the front end of the front joint 402 contacts the floor surface 1300 . Thereby, the floor surface 1300 can be cleaned.

In addition, as for the rotational connection part 200 and the rotational connection part 400, if it is not connected with the handle operation part 12 or the extension pipe 13, the cylindrical part 205 formed in the rotational connection part 200 shown in FIG. 16 and FIG. The concave portion 218 on the top and the concave portion 440 formed on the cylindrical portion 406 of the rotating connection portion 400 accept the detachment preventing claws (not shown) of the attachment and detachment clips provided on the handle operation portion 12 or the extension tube 13, but Taper fitting can also be connected to extension pipes and operating handles that do not have claws for detachment, so that dedicated connection parts are not required.

In the case of tapered fitting, the inhalation tool 100 or the rotary connection part 400 can be mounted upside down on the other side of the handle operating part 12 or the extension tube 13 . Even in this case, the effects of the present embodiment described above can be obtained.

According to the present embodiment above, since a plurality of rotating connection parts are provided on the inhalation device 100, and both the blocking mechanism and the locking mechanism are provided on the rotating connecting parts, it is possible to reliably fix the rotation angle during use, and it is easy to adjust the angle. It can be unlocked when excessive force is applied in the locked state. In addition, since at least one of the rotating connection parts can be installed on the connecting pipe provided between the rotating connecting parts upside down with respect to the connecting pipe, even if the extension pipe cannot reach a narrow space with a depth due to interference such as furniture, etc. The ceiling surface can also be cleaned. In addition, since it can be flexibly expanded and contracted between the rotating joints (joints), it can correspond to various heights and depths. In addition, since the inhalation device 100 can be installed upside down on the other end side of the handle operating part 12 or the extension pipe 13, even if the space between the floor surface and the bottom of the table is narrow and the extension pipe cannot enter the deep gap Able to clean. In addition, since the brush base of the suction port forming part can be swung, even in narrow spaces with depth such as high places, ceiling surfaces, and under tables, the suction port (opening) follows the cleaning surface, reducing residual garbage, and enabling cleaning. Clean up more efficiently. In addition, the suction opening forming part 426 at the front end of the inhalation device 100 can be directly mounted on the handle operating part or the other end side of the extension pipe, and by making it roughly T-shaped, the cleaning surface in the front and rear directions can be enlarged, and the left and right The direction reduces the friction surface, so the load on the handle side can be reduced.

Claims (8)

1. An electric vacuum cleaner, comprising: a vacuum cleaner main body having an electric blower and a dust collecting part; a hose that can be connected to the main body of the vacuum cleaner at one end; a handle operation part that can be connected to the other end of the hose at one end; An extension pipe connected to the other end of the handle operating part; and a substantially T-shaped suction body capable of being connected to the other end of the extension pipe, characterized in that, comprising an inhalation device connectable to the handle operating portion or the other end side of the extension tube, The above-mentioned inhalation device is formed to be bendable by utilizing a plurality of joint mechanisms, A locking mechanism is provided on at least one of the above-mentioned joint mechanisms, and the locking mechanism can lock the bending and release the locking of the bending through the user's operation, The joint mechanism provided with the above-mentioned locking mechanism has a flow channel inside the joint mechanism, The rotation shaft of the joint mechanism and the locking mechanism are formed outside the wall surface of the joint mechanism forming the flow path, Either one of the abutting side surfaces of the locking projection and the locking groove constituting the locking mechanism is an inclined surface. 2. The electric vacuum cleaner according to claim 1, characterized in that, The lock mechanism includes a release button that releases a bent lock by a user's operation, and an urging mechanism that urges the release button in a locking direction. 3. The electric vacuum cleaner according to claim 2, characterized in that, The above-mentioned release button is formed on a joint of the above-mentioned joint mechanism, The locking mechanism has at least one locking protrusion formed on the release button, and a locking groove formed on the other joint of the joint mechanism and corresponding to the locking protrusion, In the lock mechanism, when the release button moves in the direction of the rotation axis of the joint mechanism, the lock protrusion and the lock groove are disengaged to release the lock, and the release button is returned by the urging mechanism. The locking protrusion is fitted into the locking groove to be locked. 4. The electric vacuum cleaner according to claim 2, characterized in that, The above-mentioned release button is formed on a joint of the above-mentioned joint mechanism, The locking mechanism has a locking groove formed on the release button, and at least one locking protrusion formed on the other joint of the joint mechanism and corresponding to the locking groove, In the lock mechanism, when the release button moves in the direction of the rotation axis of the joint mechanism, the lock protrusion and the lock groove are disengaged to release the lock, and the release button is returned by the urging mechanism. The locking protrusion is fitted into the locking groove to be locked. 5. The electric vacuum cleaner according to claim 2, characterized in that, The lock mechanism includes a cover covering the release button, The above-mentioned cover body is formed on another joint of the above-mentioned joint mechanism, The above-mentioned locking groove is formed on the above-mentioned cover body. 6. The electric vacuum cleaner according to claim 3, characterized in that, A contact surface between the lock protrusion and the lock groove is formed inclined at a predetermined angle with respect to a rotation axis direction of the joint mechanism. 7. The electric vacuum cleaner according to claim 1, characterized in that, The inhalation device includes a connection pipe connectable to the handle operation part or the other end side of the extension pipe, and a substantially T-shaped second mouthpiece connectable to the connection pipe, The second mouthpiece body includes a mouthpiece formed on the side of the connecting pipe and a brush portion formed on an opening of the mouthpiece opposite to the side of the connecting pipe, The said brush part is formed so that it can swing with respect to the said suction port part. 8. The electric vacuum cleaner according to claim 7, characterized in that, The said fur brush part can swing relative to the said suction opening part using the longitudinal direction intermediate part of the said fur brush part as a fulcrum.

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