TWI913613B - Dust collection filters and electric vacuum cleaners equipped with them - Google Patents

Abstract

The present invention addresses the problem of providing a dust collection filter that achieves miniaturization and weight reduction without damage during the formation of the corner support plate in the bag filter, and an electric vacuum cleaner incorporating the same. The electric vacuum cleaner 1 of the present invention is characterized by having a bag component 121 that filters and houses dust entering through a first inlet hole 121o, and at least a portion of the bag component 121 is wrinkled. The diameter s4 of the first inlet hole 121o is at least 50% of the width dimension s3 of the bag component 121.

Description

Dust collection filters and electric vacuum cleaners equipped with them

This invention relates to a dust collection filter and an electric vacuum cleaner having the same.

Besides the previously popular canister vacuum cleaners, stick vacuum cleaners have recently become increasingly popular. Stick vacuum cleaners aim for small size and lightweight design. Both canister and stick vacuum cleaners collect the vacuumed dust in a dust filter with a filter bag. The filter bag of the dust filter consists of one or more filter sheets that can collect dust, and has folded edges (so-called corner braces) on the side.

Figure 13 shows a front view of the previous dust collection filter 200, which is formed as a bag-shaped filter 201. Figure 14 shows a cross-sectional view along line II-II of Figure 13. The dust collection filter 200 has an opening 202 that connects to an extension tube for dust suction. That is, an opening 202 for dust to pass through is formed on the front surface of the bag-shaped filter 201. The diameter s102 of the opening 202 needs to be greater than or equal to the inner diameter of the extension tube. This is because if the diameter s102 of the opening 202 is smaller than the inner diameter of the extension tube, it will create resistance during dust suction.

In the bag filter 201 shown in Figure 14, a folded corner support plate g is formed. [Prior Art Documents] [Patent Documents]

[Patent Document 1] Japanese Patent Application Publication No. 2015-154800

[Problem Solved by the Invention] Here, the width s100 of the bag-shaped filter 201 forming the opening 202 must be contained within the width of a canister vacuum cleaner or a stick vacuum cleaner. Therefore, when the width s100 of the bag-shaped filter 201 is large, the width of the stick vacuum cleaner increases, making miniaturization difficult. On the other hand, since canister vacuum cleaners do not seek miniaturization like stick vacuum cleaners, the width s100 is not limited, as shown in Figure 13.

However, in stick vacuum cleaners, if the width s100 of the bag filter 201 is narrowed, the dimension s101 between the opening 202 and the folded-in body 201o of the bag filter 201 becomes shorter. As a result, when forming the corner brace (folded-in body) g during the production of the bag filter 201, problems gradually emerge such as damage (cracks, etc.) around the opening 202, leading to a decrease in yield. Therefore, this becomes an obstacle to the miniaturization of dust collection filters (bag filters), and even to the miniaturization or weight reduction of stick vacuum cleaners that use them.

This invention was made in view of the above-mentioned situation, and its purpose is to provide a miniaturized dust collection filter that does not break when the bag filter forms the corner support plate, and an electric vacuum cleaner equipped with the same. [Technical Means for Solving the Problem]

To solve the above problems, the present invention is characterized by having a bag component that filters and houses dust entering through a first inlet hole, and at least a portion of the bag component is wrinkled, wherein the diameter of the first inlet hole is at least 50% of the width of the bag component. [Effects of the Invention]

According to the present invention, a dust collection filter that can be miniaturized without damage when the bag filter forms a corner support plate and an electric vacuum cleaner having the same are available.

The embodiments of the present invention will now be described with reference to the drawings. Furthermore, in the drawings, the same symbols are used to indicate the same constituent elements. Also, the following description of the configuration is merely an embodiment, and the embodiments of the present invention are not limited to the specific embodiments described below.

<<Embodiment 1>> Figure 1 shows a perspective view of the electric vacuum cleaner 1 of Embodiment 1 of the present invention in its rod-like configuration. In the following figures, the front-to-back, left-to-right, and up-down directions are defined as indicated by arrows. The electric vacuum cleaner 1 includes a vacuum cleaner body 10, an extension tube 20, and a suction nozzle 30. The vacuum cleaner body 10 houses a fan, motor, control unit, battery, etc. The suction nozzle 30 is connected to the other end of the extension tube 20. The suction nozzle 30 draws in dust from the floor Y by the rotation of the fan.

Figure 2 shows a perspective view of the electric vacuum cleaner 1 of Embodiment 1 housed in the bracket 50. The electric vacuum cleaner 1 is placed on the bracket 50 when not in use.

Figure 3 shows a perspective view of the electric vacuum cleaner 1 of Embodiment 1 in its handheld configuration. One end of the extension tube 20 shown in Figure 1 is connected to the vacuum cleaner body 10 via a connecting tube 101 (see Figure 3). The connecting tube 101 is fixed to the front of the vacuum cleaner body 10. An airflow suction passage 101a is formed inside the connecting tube 101, and it communicates with the internal passage of the extension tube 20. A brush portion 40 is provided on the outer periphery of the connecting tube 101.

The upper part of the connecting tube 101 has a locking button 102a and a button cover 102 covering the locking button 102a. The locking button 102a has the function of preventing the extension tube 20 shown in FIG1 from coming out when connected.

Figure 4 shows a longitudinal sectional view of the vacuum cleaner body 10 of the electric vacuum cleaner 1, cut along the front-to-back direction. The vacuum cleaner body 10 is formed by a lower shell 10a and an upper shell 10b disposed above the lower shell 10a. The vacuum cleaner body 10 includes a dust collection section 12, a dust collection cover 11, and a handle 13. The handle 13 is formed on a portion of the upper shell 10b. The handle 13 is held by the user during vacuuming.

The dust collection section 12 collects dust drawn in by the suction port 30 (see Figure 1). A dust collection cover 11 closably covers the upper part of the dust collection section 12. The upper casing 10b has an exhaust port. The lower casing 10a has a packaging chamber 10e and a motor chamber 10f. An electric blower 14 is housed in the motor chamber 10f. The electric blower 14 has a fan 141 and a motor 143. The fan 141 of the electric blower 14 generates suction at the suction port 30 (see Figure 1). The motor 143 is connected to the fan 141 via a rotating shaft 142, driving the fan 141 to rotate.

Downstream (rear) of the electric blower 14, a battery pack 16 is provided to supply power to the electric blower 14. The battery pack 16 contains a plurality of batteries that supply power to the electric blower 14. The packaging chamber 10e houses a dust collector filter 120 (see Figure 5) for collecting dust.

Figure 5 shows a perspective view of the dust collector filter 120 in its folded state, according to the embodiment. The dust collection cover 11 shown in Figure 4 holds the dust collection section 12 in a closed state by the dust collection cover clamp 112. The lower casing 10a forms below the dust collection section 12. A control board 15 is provided inside the vacuum cleaner body 10.

A control device for controlling the electric blower 14 is mounted on the control board 15. An operating switch 17 for turning the electric blower 14 on and off and adjusting the suction force is provided on the handle 13.

<Dust Collection Unit 12 Dust Filter 120> The dust collection unit 12 shown in Figure 4 includes a disposable dust filter 120 (details described later) that filters and collects dust drawn in by the self-priming inlet 30 (see Figure 1). The dust filter 120 is detachable.

The dust collector filter 120 shown in Figure 5 includes a bag-shaped filter 121, a support plate 122, and a sealing member 123. The support plate 122 allows the dust collector filter 120 to be installed inside the electric vacuum cleaner 1. The support plate 122 has an inlet 122a at its center, communicating with the suction passage 101a (see Figure 4) of the connecting pipe 101. The bag-shaped filter 121 is bag-shaped, allowing for airflow and flexibility. Dust passing through the inlet 122a and filter inlet 121o of the support plate 122 accumulates in the bag-shaped filter 121.

Install the dust collector filter 120 onto the dust collection section 12 as described below. Erect the support plate clamp 104 (see FIG. 6). Next, insert the support plate 122 of the dust collector filter 120 along the guide groove (not shown) formed in the dust collection section 12. Then, lower the support plate clamp 104 (see FIG. 6) onto the upper part of the support plate 122. In this way, the dust collector filter 120 is secured to the dust collection section 12. FIG. 6 shows a perspective view of the dust collector filter 120 after it has been removed from the vacuum cleaner body 10 and disposed of.

With the central axis A of the suction passage 101a shown in FIG. 4 horizontal, the support plate 122 is installed at an angle to the dust collection section 12, with the upper part positioned slightly lower than the lower part. In other words, the central axis E of the support plate 122 of the dust collector filter 120 is tilted approximately 20° clockwise relative to the central axis A of the suction inlet 101b. Furthermore, a cylindrical inlet liner 103 is provided between the connecting pipe 101 and the dust collection section 12.

The mouthpiece 103 is formed by an inflow passage 103a (with a central axis C) communicating with the suction passage 101a of the connecting pipe 101, and a deep side lip 103c (with a central axis E) abutting against the support plate 122. The mouthpiece 103 is formed of a flexible component. For example, SBR (styrene butadiene rubber) is used as the flexible component. A protective filter 180 is disposed between the installed dust collection filter 120 and the opening 12b for the electric blower. The protective filter 180 is used to prevent dust leaking from the bag filter 121 from being drawn into the filter of the electric blower 14. The protective filter 180 is mounted on the dust collection section 12 and supported by a filter frame 18 that can slide generally vertically.

<Dust Flow> Dust drawn in through the suction passage 101a of the connecting pipe 101 shown in Figure 4, along with air, passes through the suction passage 101a and the inflow passage 103a of the liner 103, and is collected by the bag filter 121 of the dust collector 120 through the inlet 122a of the support plate 122. The dust drawn into the bag filter 121 is filtered by the bag filter 121. The air passing through the bag filter 121 passes through the protection filter 180 and the opening 12b for the electric blower, and is then drawn into the electric blower 14.

<How to Use Electric Vacuum Cleaner 1> The method of using electric vacuum cleaner 1 will be explained. When using electric vacuum cleaner 1 as the stick vacuum cleaner shown in Figure 1, the user connects the suction head 30 to the connecting pipe 101 of the vacuum cleaner body 10 via the extension tube 20. The user holds the handle 13 and operates the operation switch 17 to drive the electric blower 14. The suction force of the electric blower 14 generates suction force on the suction head 30. The user moves the suction head 30 on the floor Y in a back-and-forth direction (arrow α11 in Figure 1). Dust sucked in from the suction head 30 is collected by the dust collection filter 120 of the dust collection section 12 through the extension tube 20.

When using the electric vacuum cleaner 1 as a handheld electric vacuum cleaner as shown in FIG. 3, the user removes the extension tube 20 from the connecting tube 101 of the vacuum cleaner body 10 (see FIG. 1). This exposes the suction port 101b of the suction passage 101a (see FIG. 4). The user holds the handle 13 and operates the operating switch 17 to drive the electric blower 14, causing the connecting tube 101 to move across the suction surface S (see FIG. 3) (arrows α12 and α13 in FIG. 3). Then, dust is directly sucked in through the suction port 101b. The sucked-in dust is collected by the dust collection filter 120 (see FIG. 4) of the dust collection section 12.

<Details of Dust Collector Filter 120> Next, the dust collector filter 120 shown in Figure 5 will be described in detail. As described above, the dust collector filter 120 includes a support plate 122, a bag-shaped filter 121, and a sealing component 123. The support plate 122 has a circular inlet 122a at its center and a rectangular shape with chamfered corners. From the viewpoint of ease of handling by the user or prevention of deformation, the support plate 122 is made of thick paper or plastic, etc.

The bag filter 121 is breathable and is made of non-woven fabric such as paper, cloth, animal hair, or plastic. If the bag filter 121 is made of paper, it is easy to form a corner brace (see the folded body in Figure 9), resulting in high productivity and low cost. The sealing component 123 seals the inlet 122a when the waste dust collector 120 is disposed of. One end edge 123e of the sealing component 123 is mounted on the support plate 122. The sealing component 123 is mounted near any side of the rectangular support plate 122. Alternatively, in this embodiment, the sealing component 123 is mounted on the support plate 122, but it can also be mounted attached to a portion of the bag filter 121. The bag filter 121 is attached to the support plate 122 via the support plate contact surface 122s (see Figure 10) on the back side of the support plate 122.

The portion where the bag filter 121 connects to the support plate 122 (refer to the support plate contact surface 122s in FIG. 10) is located near the inlet 122a of the support plate 122, and its outer periphery is not connected to the bag component 121. That is, the bag filter 121 connects to the periphery of the inlet 122a at the opening of the support plate 122. When the support plate 122 is installed in the dust collection section 12 of the electric vacuum cleaner 1 (refer to FIG. 4), it is engaged and fixed with the claw portion of the support plate clamp 104 as described above. Therefore, when the bag filter 121 connects to the outer periphery of the support plate 122, the support plate 122 cannot engage with the claw portion of the support plate clamp 104. Furthermore, there is a risk that the claws of the support plate clamp 104 (see Figure 4) may damage the bag-shaped filter 121.

Therefore, in this embodiment, the outer periphery of the support plate 122 is not connected to the bag filter 121. The portion of the support plate 122 that is not connected to the bag filter 121 requires at least one side of the support plate 122, that is, the side that engages with the claw of the support plate clamp 104 (see FIG. 4), and the other sides can also be connected to the end of the support plate 122.

The sealing component 123 is installed on the upper back side 122b1 of the support plate 122, at the portion not connected to the support plate 122 and the bag filter 121 (see FIG. 5). In this embodiment, it is provided on the upper back side of the support plate 122. When the sealing component 123 is attached to the upper back side of the support plate 122, it is preferable not to attach it near the end of the support plate 122. The reason is that since the upper side of the support plate 122 is engaged and fixed with the claw portion of the support plate clamp 104, in order not to damage the sealing component 123, it is preferable that the portion engaged with the claw portion of the support plate clamp 104 is not connected to the support plate 122 and the sealing component 123.

The sealing component 123 has a sealing portion 124 and a release liner 125. The sealing portion 124 shown in FIG. 6 has an adhesive surface, i.e., adhesive. The release liner 125 covers the adhesive surface 124a of the sealing portion 124 (see FIGS. 5 and 6). The sealing portion 124 and the release liner 125 are separated by the adhesive, and are arranged such that the release liner 125 is located on the front surface side of the support plate 122 shown in FIG. 6, and the sealing portion 124 is located on the back side of the support plate 122. A latching hole 126a is formed in the gripping portion 126 of the release liner 125 for engaging with the protrusion 104a of the support plate clamp 104 provided on the electric vacuum cleaner 1.

As shown in Figure 6, in the sealing component 123, when the release paper 125 is peeled off from the sealing part 124, the adhesive surface 124a of the sealing part 124 is exposed. Then, the sealing part 124 is folded back over the support plate 122, so that the exposed adhesive surface 124a faces the front surface of the support plate 122, thus attaching the adhesive surface 124a of the sealing part 124 to the support plate 122. In this way, the inlet 122a of the support plate 122 is covered and blocked by the sealing part 124. Therefore, when the waste dust filter 120 is disposed of, leakage of dust from the bag filter 121 through the inlet 122a can also be prevented.

As shown in Figure 6, the sealing part 124's adhesive surface 124a blocks the inlet 122a of the support plate 122. This is preferably done when the bag filter 121 is filled with dust and the dust filter 120 is removed from the dust collection part 12 of the electric vacuum cleaner 1.

Figure 7 shows a top view of the bag filter raw material 121a before assembly of the bag filter 121. The raw material 121a, the bag filter raw material 121a, before assembling the bag filter 121, is rectangular in shape. The raw material for the bag filter 121 is referred to as bag filter raw material 121a.

The bag filter material 121a is composed of two overlapping pieces of the same size as the bag filter material 121a: a first material 121b and a second material 121c. The first material 121b is formed of a relatively stiff material that forms the outer contour, while the second material 121c is formed of a soft material similar to non-woven fabric. The first material 121b has been wrinkled. Wrinkling refers to the process of creating tiny bumps (embossing) or wrinkles on the first material 121b to soften the material. The mesh of the second material 121c, which forms the inner side, is denser than that of the first material 121b, which forms the outer side. In other words, the mesh of the outer first material 121b is coarser than that of the inner second material 121c.

The first raw material 121b and the second raw material 121c are partially connected. Also, in this embodiment 1, the bag-shaped filter 121 is composed of two raw materials, but it can also be composed of one or more raw materials. In that case, it is preferable that the mesh of the inner raw material is denser than that of the outer raw material.

A circular filter inlet 121o is formed in the center of the bag filter material 121a (see Figure 7). The finished width dimension s3 of the bag filter 121 (see Figures 8 and 9) is 64 mm, and the diameter s4 of the filter inlet 121o is 33 mm. The finished width of the bag filter 121 shown in Figure 5 is referred to as the finished width dimension s3 of the bag filter 121 (see Figures 8 and 9). Figure 8 shows a top view of the bag filter material 121a formed by folding it along the longitudinal fold lines o11-o15 and the transverse fold lines o21 and o22. Figure 9 shows a cross-sectional view along line I-I of Figure 8. That is, the filter inlet 121o is configured such that the diameter s4 (refer to Figure 7) is at least 50% of the finished width dimension s3 (refer to Figures 8 and 9) (opening ratio = s4/s3 > 50%). Thus, because the diameter s4 of the filter inlet 121o is formed to a larger extent, the resistance when drawing in dust is reduced, ensuring suction performance. Furthermore, in this embodiment 1, a case is illustrated where the entire bag filter material 121a (first material 121b) is wrinkled; however, it is also possible to configure it so that at least the area surrounding the filter inlet 121o (refer to Figure 7) is wrinkled. As noted, increasing the opening ratio (s4/s3) (if the size of s4 is increased) reduces the adhesion residue when the bag filter 121 is attached to the support plate 122. Therefore, when using the dust collector filter 120, issues such as adhesion peeling and air leakage may occur. Thus, the upper limit of the opening ratio is appropriately set considering the adhesion residue (adhesion strength) of the support plate 122.

As shown in Figure 7, the bag filter material 121a is formed with longitudinal fold lines o11-o15 and transverse fold lines o21, o22 for forming the corner support plates. The pair of longitudinal fold lines o11-o15 are the lines through which the bag filter material 121a is folded longitudinally. As shown in Figure 9, two corner support plates (folded-in bodies) g are formed by folding along the longitudinal fold lines o11-o15. The pair of transverse fold lines o21, o22 shown in Figure 7 are the lines through which the bag filter material 121a is folded transversely.

When the two-section corner bracing plate g is formed from the bag filter material 121a, an external force is applied to the periphery. However, due to the wrinkle processing of the bag filter material 121a, it becomes flexible, thus preventing damage. The finished width dimension s3 of the bag filter 121 shown in Figure 9 is 64 mm. Relative to this, the minimum distance s5 between the left and right folded-in bodies is 4 mm. That is, it is constructed such that the minimum distance s5 between the left and right folded-in bodies relative to the finished width dimension s3 of the bag filter 121 is at least 10%. This increases the volume of the bag filter 121 when it expands, thereby increasing the amount of dust contained within it.

Here, by forming the minimum distance s5 between the left and right folded-in bodies (the part of the vertical fold line o14 in Figure 9) on the deeper side of the bag filter 121 (the side away from the filter inlet 121o), the bag filter 121 can reliably expand during use. In this way, by shortening the distance between the left and right folded-in bodies towards the deeper side, the bag filter 121 can reliably expand during use.

Alternatively, in the embodiment, the corner support plate g (the portion between the longitudinal fold line o14 and the portion between the longitudinal fold line o12 in Figure 9) is a two-segment (double corner support plate), but it can also be a single-segment or three-segment corner support plate. In this case, by making the distance between the corner support plates on the deeper side shorter than that on the front side, the bag filter 121 can be reliably expanded during use. Then, as shown in Figure 9, the left end 121a1 and the right end 121a2 of the bag filter material 121a are connected using adhesive 129.

Next, if the bag filter material 121a is folded along the horizontal fold lines o21 and o22 as shown in Figure 7, it becomes the state shown in Figure 8. The folded portions 121a3 and 121a4 of the bag filter material 121a along the horizontal fold lines o21 and o22 are then attached and sealed, and the bag filter 121 (see Figure 8) is complete.

Figure 10 shows a front view of the dust collector filter 120 with the support plate 122 and sealing member 123 installed near the bag filter 121. The support plate 122 aligns its inlet 122a with the filter inlet 121o of the bag filter 121 (see Figure 8), and is attached to the bag filter 121 (see Figure 8) via its contact surface 122s. Furthermore, one end edge 123e (see Figure 5) of the sealing member 123 is attached to the upper back side 122b1 of the support plate 122.

The bag filter 121 of the dust collector 120 shown in Figure 10 forms broken lines o31, o32, o33, o34 to set the dust collector 120 to an unused state (see Figure 5).

If the bag filter 121 of the dust collector 120 shown in Figure 10 is folded along the fold lines o31, o32, o33, o34, it becomes the dust collector 120 in the unused state shown in Figures 11A and 11B.

Figure 11A shows a view of the dust collector filter 120 in its unused state. Figure 11B shows a view along the I-direction arrow in Figure 11A. The two-point chain shown in Figure 11B shows the bag-shaped filter 121 shown in Figure 10 before it is folded according to the fold lines o31, o32, o33, o34.

<Manufacturing Steps of Dust Collector Filter 120> Next, a summary of the manufacturing steps of the dust collector filter 120 will be explained. In step 1, the wrinkled first raw material 121b and second raw material 121c shown in Figure 7 are attached to other parts around the location where the filter inlet 121o is formed. In step 2, the filter inlet 121o is formed from the bag-shaped filter material 121a attached to the first raw material 121b and second raw material 121c.

In step 3, as shown in Figure 9, while stretching the bag-shaped filter material 121a, two sections of corner bracing g are woven in (the areas with fold lines o12 and o14). In step 4, adhesive 129 is used to connect the left end 121a1 and right end 121a2 of the cylindrical bag-shaped filter material 121a. In step 5, the filter inlet 121o of the bag-shaped filter 121 (refer to Figure 8) is aligned with the inlet 122a of the support plate 122. The thick paper support plate 122 is then connected to the bag-shaped filter 121 (refer to Figure 8) via the support plate bonding surface 122s on the back side of the support plate 122.

In step 6, fold the bag filter material 121a along the horizontal fold lines o21 and o22 as shown in Figure 7. In step 7, connect and seal the folded portions 121a3 and 121a4 (see Figure 8) along the horizontal fold lines o21 and o22 as shown in Figure 7. In step 8, connect one end edge 123e of the sealing member 123 to the upper back side 122b1 of the support plate 122, which is connected to the bag filter 121 shown in Figure 10. Subsequently, fold the bag filter 121 of the dust collector 120 shown in Figure 10 along fold lines o31, o32, o33, and o34. The dust collector filter 120 shown in Figures 11A and 11B is thus completed. Steps 1 through 8 above are simply added to illustrate the manufacturing sequence.

According to the configuration of Embodiment 1 described above, the bag-shaped filter 121 is made soft due to the wrinkle-like processing. Therefore, after forming the filter inlet 121o (see FIG. 7), the area around the filter inlet 121o is less prone to damage during the step of manufacturing the deeper folded edge (corner support plate), resulting in high productivity. Therefore, since the width dimension s3 of the dust collection filter 120 shown in FIG. 10 (see FIG. 11A, FIG. 9) is smaller, the width dimension s1 of the electric vacuum cleaner 1 (see FIG. 3) can be reduced. Therefore, the electric vacuum cleaner 1 can be made lighter.

Furthermore, because the inlet 121o of the bag filter 121 and the inlet 122a of the support plate 122, which are used for dust suction as shown in Figure 5, can be formed larger, the resistance during dust suction is reduced, thus ensuring suction performance. By ensuring the depth of the corner bracing plates g (see Figure 9) of the folded-in bodies on the left and right sides of the dust collector 120, the overall volume of the dust collector 120 can be maintained. Therefore, a larger dust collection capacity of the electric vacuum cleaner 1 can be ensured. In summary, an electric vacuum cleaner 1 with a large dust collection capacity, as well as miniaturization and weight reduction, can be realized. As can be seen from the accompanying description, since the electric vacuum cleaner 1 in this embodiment integrates the motor or battery used for suction with the handle held by the user into a single rod shape, it is significantly lighter than a single-piece canister design where the handle is held separately, resulting in a much greater cleaning effect.

<<Embodiment 2>> Figure 12 shows a perspective view of the dust collector 120A of Embodiment 2. The dust collector 120A of Embodiment 2 is constructed without the sealing component 123 used in the dust collector 120 of Embodiment 1. Since other components are the same as those of the dust collector 120 of Embodiment 1, the same components are labeled with the same symbols and detailed descriptions are omitted.

In the dust collection filter 120A of Embodiment 2, the same functional effect is achieved as in Embodiment 1. <<Other Embodiments>> 1. This invention is not limited to the above-described embodiments and variations; various variations and specific forms can be implemented within the scope of the appended patent applications.

1: Electric Vacuum Cleaner 10: Vacuum Cleaner Body 10a: Lower Shell 10b: Upper Shell 10e: Packaging Chamber 10f: Motor Chamber 11: Dust Collection Cover 12: Dust Collection Section 12b: Electric Blower Opening 13: Handle 14: Electric Blower 15: Control Board 16: Battery Pack 17: Operating Switch 18: Filter Frame 20: Extension Tube 30: Suction Inlet 40: Brush Section 50: Support 101: Connecting Tube 101a: Suction Passage 101b: Suction Inlet 102: Button Cover 102a: Locking Button 103: Liner 103a: Inflow passage 103c: Deep side lip 104: Support plate clamp 104a: Protrusion 112: Dust collection cover clamp 120: Dust collection filter 120A: Dust collection filter 121: Bag filter (bag component) 121a: Bag filter material 121a1: Left end of bag filter material 121a2: Right end of bag filter material 121a3, 121a4: Location 121b: First material 121c: Second material 121o: Filter inlet (first inflow hole) 122: Support plate 122a: Inlet (Second inlet hole) 122b1: Upper side of back face 122s: Support plate contact surface 123: Sealing component 123e: One end edge 124: Sealing part 124a: Adhesive surface 125: Peeling paper 126: Grip part 126a: Snap-fit hole 129: Adhesive 141: Fan 142: Rotating shaft 143: Motor 180: Protective filter 200: Dust collection filter 201: Bag filter 201o: Fold-in body 202: Opening A: Central shaft C: Central shaft E: Central shaft g: Angle support plate (folded-in body) o11～o15: Vertical fold line o21, o22: Horizontal fold line o31, o32, o33, o34: Fold line s1: Width dimension of the electric vacuum cleaner s3: Finished width dimension (width dimension of the bag component) s4: Diameter of the filter inlet (diameter of the first inlet hole) s5: Minimum distance between the left and right folded-in bodies s100: Horizontal width of the bag filter s101: Dimension between the opening and the folded-in body of the bag filter s102: Diameter of the opening S: Suction surface Y: Floor α11: Arrow α12: Arrow α13: Arrow

Figure 1 is a perspective view of the electric vacuum cleaner of Embodiment 1 of the present invention in its stick-like form. Figure 2 is a perspective view of the electric vacuum cleaner of Embodiment 1 housed in its support. Figure 3 is a perspective view of the electric vacuum cleaner 1 of Embodiment 1 in its handheld form. Figure 4 is a longitudinal sectional view of the vacuum cleaner body of the electric vacuum cleaner cut along the front-to-back direction. Figure 5 is a perspective view of the dust collector filter of the embodiment in its folded state. Figure 6 is a perspective view of the dust collector filter after it has been removed from the vacuum cleaner body and disposed of. Figure 7 is a top view of the bag filter material before assembly. Figure 8 is a top view of the bag filter material formed by folding the raw material along both longitudinal and transverse fold lines. Figure 9 is a sectional view along line I-I of Figure 8. Figure 10 is a front view of the dust collector filter with a support plate and sealing components installed near the front of the bag filter. Figure 11A is a front view of the dust collector filter in its unused state. Figure 11B is a view along the arrow in direction I of Figure 11A. Figure 12 is a perspective view of the dust collector filter of Embodiment 2. Figure 13 is a front view of the bag filter formed from the previously existing dust collector filter. Figure 14 is a sectional view along line II-II of Figure 13.

120: Dust Collector Filter

121: Bag filter (bag component)

121o: Filter inlet (first inlet hole)

122: Support Board

122a: Inlet (Second Inlet Hole)

122b1: Back upper side

123: Sealing components

123e: One edge

124: Sealing section

124a: Adhesive surface

125: Peeling Paper

126: Grip section

126a: Fastening hole

o21, o22: Horizontal dash

o31, o32, o33, o34: Broken line

Claims (5)

A dust collector filter is characterized by: a bag component that filters and houses dust entering from a first inlet hole; the bag component is wrinkled in at least the area surrounding the first inlet hole, and folds are formed on the left and right sides; the distance between the left and right folds is shorter on the deeper side; the diameter of the first inlet hole is at least 50% of the width of the bag component. A dust collector filter is characterized by: a bag structure that filters and houses dust entering from a first inlet hole; and the bag structure is wrinkled in at least the area surrounding the first inlet hole, and folds are formed on the left and right sides; the distance between the left and right folds is shorter on the deeper side; the minimum distance between the left and right folds is at least 10% of the width of the bag structure. The dust collection filter, as described in claim 1 or 2, comprises: a support plate having a second inflow hole aligned with the first inflow hole, and for mounting the bag component to the electric vacuum cleaner. For example, in the dust collection filter of request item 1 or 2, the aforementioned bag component is made of paper. An electric vacuum cleaner having a dust collection filter as described in claim 1 or 2.