vacuum cleaner

Abstract

To provide a vacuum cleaner to be advantageous in efficiently removing dust attached to a rotary brush.SOLUTION: A vacuum cleaner includes a suction body for sucking dust on a surface to be cleaned. The suction body includes: a rotary brush for raking up the dust from the surface to be cleaned; a motor for driving the rotary brush; a bumper part; and a dust remover for removing the dust attached to the rotary brush. The dust remover is attached to the bumper part. The bumper part and the dust remover are constituted as separated components.SELECTED DRAWING: Figure 20

Description

[Technical Field]

[0001] The present disclosure relates to vacuum cleaners. [Background technology]

[0002] The suction section of the vacuum cleaner disclosed in Patent Document 1 below includes a suction port for sucking in dust, a rotary cleaning body, a drive means, a cover, and a hook. The rotary cleaning body has a cleaning member that removes dust from the surface to be cleaned and is rotatably arranged at the suction port. The drive means rotates the rotary cleaning body. The cover is arranged opposite the rotary cleaning body and can move forward and backward relative to the rotary cleaning body. The hook is provided on the cover and hooks dust adhering to the rotary cleaning body when the cover is advanced relative to the rotary cleaning body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-92974 Summary of the Invention [Problem to be solved by the invention]

[0004] In the electric vacuum cleaner described in Patent Document 1, there is a possibility that dust may slide without being caught on the surface of the hook portion and remain on the rotating cleaning body without being removed.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an electric vacuum cleaner that is advantageous in efficiently removing dust adhering to a rotating brush. [Means for solving the problem]

[0006] The vacuum cleaner according to the present disclosure is a vacuum cleaner having a suction body that sucks dust from a surface to be cleaned, the suction body having a rotating brush that sweeps up dust from the surface to be cleaned, an electric motor that drives the rotating brush, a bumper part, and a dust remover that removes dust adhering to the rotating brush, the dust remover being attached to the bumper part, and the bumper part and the dust remover being configured as separate parts, and the dust remover having: Lined up along the axial direction of the rotating brush A plurality of protrusions are provided, each of the plurality of protrusions being a plurality of comb-tooth protruding portions and a plurality of comb-tooth recessed portions; The comb-tooth shape has comb-tooth projections and comb-tooth recesses arranged alternately. The comb-tooth recess has a height, and the height of the comb-tooth recess is lower than the height of the comb-tooth protrusion. It is something. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a vacuum cleaner that is advantageous in efficiently removing dust adhering to a rotating brush. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a vacuum cleaner according to a first embodiment. [Figure 2] 1 is a side view showing a vacuum cleaner according to a first embodiment. [Figure 3] FIG. 10 is a perspective view showing a vacuum cleaner according to a second embodiment. [Figure 4] FIG. 10 is a side view showing the electric vacuum cleaner according to the second embodiment. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. 2 is a perspective view of the bumper portion as seen from the front. [Figure 16] FIG. 2 is a perspective view of the bumper portion as seen from behind. [Figure 17] FIG. 17 is an enlarged perspective view of a part of FIG. 16. [Figure 18] FIG. [Figure 19] FIG. [Figure 20] FIG. 3 is a cross-sectional view of the suction body as seen from the side. [Figure 21] 10 is a cross-sectional side view of the suction body showing the initial position of the outer periphery of the bumper. FIG. [Figure 22] FIG. 10 is a cross-sectional side view of the suction body showing the end position of the outer periphery of the bumper. [Figure 23] FIG. 11 is a perspective view showing a vacuum cleaner according to a third embodiment. [Figure 24] FIG. 10 is a side view showing the electric vacuum cleaner according to the third embodiment. [Figure 25] FIG. 10 is a perspective view showing a vacuum cleaner according to a fourth embodiment. [Figure 26] FIG. 10 is a side view showing the electric vacuum cleaner according to the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described with reference to the drawings. Common or corresponding elements in each drawing will be assigned the same reference numerals, and descriptions thereof will be simplified or omitted. When angles are mentioned in this disclosure, if there are a reflex angle and a minor angle whose sum is 360°, this generally refers to the minor angle, and if there are an acute angle and an obtuse angle whose sum is 180°, this generally refers to the acute angle.

[0010] Embodiment 1 FIG. 1 is a perspective view of a vacuum cleaner 1 according to a first embodiment. FIG. 2 is a side view of the vacuum cleaner 1 according to the first embodiment. In this embodiment, the "up," "down," "front," and "rear" directions of the vacuum cleaner 1 are generally defined as indicated by the arrows in FIG. 2. In this disclosure, dust and other debris are collectively referred to simply as "dust." In this disclosure, "dust" may include, for example, hair, animal hair, lint, and other fibrous debris. In addition, in this disclosure, air mixed with dust is referred to as "dust-laden air."

[0011] As shown in Figures 1 and 2, the electric vacuum cleaner 1 comprises a vacuum cleaner main body 1a, a hand-operated control unit 2, an extension tube 3, and a suction body 4. The suction body 4 comprises a joint 5. One end of the hand-operated control unit 2 is connected to the vacuum cleaner main body 1a. The other end of the hand-operated control unit 2 is connected to the extension tube 3. One end of the extension tube 3 is connected to the hand-operated control unit 2. The other end of the extension tube 3 is connected to the joint 5.

[0012] The vacuum cleaner main body 1a is equipped with an electric blower 6. The electric blower 6 generates an airflow and sucks in dust-laden air. Figure 11 is a perspective view of the suction body 4 as seen from below. As shown in Figure 11, the suction body 4 is equipped with a suction port 7. The suction body 4 is placed on a surface to be cleaned, such as a floor. The suction port 7 is an opening for sucking in dust-laden air. The dust-laden air that flows in through the suction port 7 passes through the joint part 5, the extension tube 3, and the hand-operated part 2 and flows into the vacuum cleaner main body 1a. The vacuum cleaner main body 1a is equipped with a dust collection part 8. The dust collection part 8 captures dust in the dust-laden air that flows into the vacuum cleaner main body 1a.

[0013] As shown in Fig. 11, the suction body 4 includes a rotating brush 9. Fig. 14 is a perspective view of the rotating brush 9. As shown in Fig. 14, the rotating brush 9 includes a shaft 10 that is rotatably supported by the suction body 4, and a cleaning body 11 that is fixed to the shaft 10. As the rotating brush 9 rotates, the cleaning body 11 scrapes up dust on the surface to be cleaned. The scraped-up dust on the surface to be cleaned is sucked into the suction port 7 by an airflow generated by the electric blower 6 and removed.

[0014] Fig. 5 is a perspective view of the hand-operated control unit 2. Fig. 6 is a front view of the hand-operated control unit 2. As shown in these figures, the hand-operated control unit 2 includes a first conductive part 12 for supplying power from the vacuum cleaner main body 1a to the extension tube 3. The first conductive part 12 includes a first sheet metal part 13 on the side connecting with the extension tube 3. As shown in Fig. 6, the hand-operated control unit 2 includes a first pin receiving part 14. The first sheet metal part 13 is disposed adjacent to the first pin receiving part 14.

[0015] FIG. 7 is a perspective view of the extension tube 3. FIG. 8 is a front view of the extension tube 3. FIG. 9 is a rear view of the extension tube 3. As shown in these figures, the extension tube 3 includes a second conductive part 15 for supplying power from the handheld operation unit 2 to the joint part 5. The second conductive part 15 includes a second sheet metal part 16 on the side connecting with the joint part 5. As shown in FIG. 8, the extension tube 3 includes a second pin receiving part 17. The second sheet metal part 16 is disposed adjacent to the second pin receiving part 17. As shown in FIG. 9, the second conductive part 15 includes a first pin part 18 on the side connecting with the handheld operation unit 2.

[0016] When the hand control unit 2 and the extension tube 3 are connected, the first pin portion 18 is inserted into the first pin receiving portion 14 and comes into contact with the first sheet metal portion 13. Therefore, when the hand control unit 2 and the extension tube 3 are connected, a conductor is formed from the first conductive portion 12 to the second conductive portion 15, and power is supplied from the vacuum cleaner main body 1a to the extension tube 3.

[0017] FIG. 10 is a perspective view of the suction body 4 as seen from above. FIG. 11 is a perspective view of the suction body 4 as seen from below. FIG. 12 is a rear view of the suction body 4. FIG. 13 is a side view of the suction body 4. As shown in these figures, the suction body 4 has an electric motor 19 that drives the rotary brush 9. The joint portion 5 has an electric wire portion 20 for supplying power from the extension tube 3 to the electric motor 19. As shown in FIG. 12, the electric wire portion 20 has a second pin portion 21 on the side that connects to the extension tube 3. The other end of the electric wire portion 20 is connected to the electric motor 19.

[0018] When the extension pipe 3 and the joint portion 5 are connected, the second pin portion 21 is inserted into the second pin receiving portion 17 and comes into contact with the second sheet metal portion 16. Therefore, when the extension pipe 3 and the joint portion 5 are connected, a conductor is formed from the second conductive portion 15 to the electric wire portion 20, and power is supplied from the extension pipe 3 to the joint portion 5, and power is supplied to the electric motor 19 through the electric wire portion 20, causing the electric motor 19 to rotate the rotating brush 9.

[0019] This allows the user to remove dust from the surface to be cleaned by rotating the rotary brush 9, making it possible to remove dust from the surface to be cleaned with less force and in a short time, making cleaning easier.

[0020] The suction body 4 has a bumper portion 22 on its front side. FIG. 15 is a perspective view of the bumper portion 22 as seen from the front. FIG. 16 is a perspective view of the bumper portion 22 as seen from the rear. The bumper portion 22 has a bumper outer periphery 29 made of a flexible elastic material. In the present disclosure, the flexible material may be, for example, an elastomer resin. When the front surface of the suction body 4 comes into contact with a wall of a room or the like during cleaning, the bumper outer periphery 29 comes into contact with the wall. By having the bumper outer periphery 29 made of a flexible elastic material come into contact with the wall, the suction body 4 can be reliably protected from scratches. Furthermore, the wall of the room or the like that comes into contact with the bumper outer periphery 29 can be reliably protected from scratches.

[0021] As shown in Figures 10, 12, and 13, the suction body 4 includes an upper case body 23 and a lower case body 24. Figure 20 is a cross-sectional view of the suction body 4 as viewed from the side. As shown in Figure 20, the bumper outer periphery 29 includes a flat portion 25 on its upper side. The flat portion 25 is sandwiched between the upper case body 23 and the lower case body 24, thereby fixing the bumper outer periphery 29 to the suction body 4. The front surface of the bumper outer periphery 29 is configured to be inclined with respect to the flat portion 25. The front surface of the bumper outer periphery 29 is inclined with respect to the perpendicular direction of the surface to be cleaned so that, when the front surface of the suction body 4 faces a wall, the bumper outer periphery 29 protrudes toward the wall more than the flat portion 25.

[0022] As shown in Figure 20, the front surfaces of the upper case body 23 and the lower case body 24, which cover the upper and front of the rotating brush 9, are angled nearly perpendicular to the surface to be cleaned. Due to the inclination of the bumper outer periphery 29, a gap is formed between the front surface of the lower case body 24, i.e., the front end of the lower end of the front part of the lower case 24, and the rear surface of the bumper outer periphery 29, which faces this front end. The position of the bumper outer periphery 29 when the front surface of the suction body 4 is not in contact with a wall is referred to as the "initial position." Figure 21 is a cross-sectional side view of the suction body 4, showing the initial position of the bumper outer periphery 29.

[0023] The bumper outer periphery 29 is made of a soft material and is therefore deformable. When the front surface of the suction body 4 contacts a wall, the bumper outer periphery 29 deforms toward the rotary brush 9, starting from the base of the flat portion 25, i.e., the portion facing the upper surface of the lower end of the front portion of the lower case 24. Eventually, when the rear surface of the bumper outer periphery 29 contacts the front surface of the lower case 24, i.e., the front end of the lower end of the front portion of the lower case 24, the deformation of the bumper outer periphery 29 ends. The position of the bumper outer periphery 29 when it contacts the front surface of the lower case 24 is referred to as the "end position." Figure 22 is a cross-sectional view of the suction body 4, seen from the side, showing the end position of the bumper outer periphery 29. When the suction body 4 moves away from the wall, the bumper outer periphery 29 elastically returns from the end position shown in Figure 22 to the initial position shown in Figure 21.

[0024] As shown in Fig. 16, a dust remover 26 for removing dust adhering to the rotating brush 9 is attached to the rear surface of the bumper portion 22. That is, the dust remover 26 is attached to the surface of the bumper portion 22 facing the rotating brush 9. The dust remover 26 has a plurality of protrusions 27. Fig. 17 is an enlarged perspective view of a portion of Fig. 16. As shown in Fig. 17, the protrusions 27 have a comb-tooth shape in which comb-tooth protrusions 27a and comb-tooth recesses 27b are arranged alternately. In the illustrated example, one protrusion 27 includes four comb-tooth protrusions 27a and three comb-tooth recesses 27b.

[0025] 20 to 22, the rotating brush 9 rotates in the direction of the arrow. At least one of the multiple comb-tooth protrusions 27a of the protrusion 27 has a protrusion 28 that protrudes in the direction opposite to the rotation direction of the rotating brush 9. In this embodiment, fibrous dust such as hair can be caught on the protrusion 28, so the dust remover 26 can more reliably remove dust entangled in the cleaning element 11.

[0026] FIG. 18 is an exploded perspective view of the bumper portion 22. As shown in FIG. 18, the bumper portion 22 and the dust remover 26 are configured as separate parts. The dust remover 26 is configured using a hard material that is harder than a soft material. The hard material configuring the dust remover 26 may be, for example, ABS resin. The elastic modulus of the dust remover 26 is greater than the elastic modulus of the bumper portion 22. That is, the dust remover 26 is less likely to deform than the bumper portion 22. Therefore, this embodiment can suppress deformation of the dust remover 26. Therefore, even when the protrusion 27 on which dust is caught is pulled by the rotation of the rotating brush 9, the protrusion 27 is less likely to deform, and the dust caught on the protrusion 27 is less likely to come off. This allows the dust remover 26 to more reliably remove dust entangled in the cleaning element 11.

[0027] In this embodiment, the bumper portion 22 and the dust remover 26 are configured as separate parts, which provides the following effects: The degree of freedom in the material and shape of the dust remover 26 is increased. For example, the dust remover 26 can be provided with protrusions 27 having a complex uneven shape. This makes it possible to more effectively remove dust entangled in the cleaning element 11. In contrast, if the dust remover 26 and the bumper portion 22 were the same part, it would be difficult to provide the dust remover 26 with a complex shape due to manufacturing or processing issues.

[0028] 18, the bumper portion 22 and the dust remover 26 are adhered to each other by a double-sided adhesive tape 30. The double-sided adhesive tape 30 is an example of an adhesive means.

[0029] In this embodiment, the bumper portion 22 and the dust remover 26 are further fixed to each other by an anchor portion 31. Fig. 19 is a perspective view of the anchor portion 31. The anchor portion 31 is an example of a mechanical fixing means.

[0030] 18 , the bumper outer periphery 29 and the dust remover 26 have through holes. Double-sided adhesive tape 30 adheres the dust remover 26 to the bumper outer periphery 29 at a position where the through hole in the bumper outer periphery 29 overlaps the through hole in the dust remover 26. The anchor portion 31 has a diameter larger than the diameter of the through hole in both the bumper outer periphery 29 and the dust remover 26. The anchor portion 31 is press-fitted into the hole where the through hole in the bumper outer periphery 29 and the through hole in the dust remover 26 overlap, thereby fixing the anchor portion 31 to the bumper outer periphery 29 and the dust remover 26.

[0031] In this embodiment, the bumper outer periphery 29 and the dust remover 26 are adhered without any gaps by the double-sided adhesive tape 30. This prevents dust from entering between the bumper outer periphery 29 and the dust remover 26. Furthermore, since the bumper outer periphery 29 is fixed by the anchor part 31 in addition to the double-sided adhesive tape 30, the peel strength can be further improved compared to fixation using the double-sided adhesive tape 30 alone.

[0032] The means for adhering the bumper 22 and the dust remover 26 is not limited to the double-sided adhesive tape 30, and may be, for example, an adhesive. Furthermore, the means for mechanically fastening the bumper 22 and the dust remover 26 is not limited to the anchor 31, and may be, for example, a rivet.

[0033] In the present disclosure, the dust remover 26 may be secured to the bumper portion 22 by only adhesive means or mechanical fastening means.

[0034] As shown in FIG. 21 , when the bumper outer periphery 29 is in the initial position, the dust remover 26 is positioned so as not to come into contact with the cleaning element 11. As a result, the dust remover 26 does not interfere with the operation of the rotating brush 9 while the suction element 4 is sucking dust on the surface to be cleaned. Also, as shown in FIG. 22 , when the front surface of the suction element 4 is pressed against a wall and the bumper outer periphery 29 is in the end position, the protrusions 27 of the dust remover 26 come into contact with the cleaning element 11. The rotating brush 9 rotates in the direction in which the cleaning element 11 hits the protrusions 28 of the dust remover 26. As a result, dust entangled in the cleaning element 11 is caught on the protrusions 27 and removed from the cleaning element 11.

[0035] Since the protrusion 27 has the protruding portion 28, it can efficiently catch dust when the protruding portion 27 comes into contact with the cleaning element 11. As shown in Fig. 17, the protruding portion 28 has a single prismatic shape. However, the shape of the protruding portion 28 is not limited to this. For example, the shape of the protruding portion 28 may be a triangular prismatic shape or a plurality of prismatic shapes.

[0036] When the suction body 4 moves away from the wall and the bumper outer periphery 29 returns to its initial position, the dust remover 26 returns to a position where the protrusion 27 does not come into contact with the cleaning body 11.

[0037] When the suction body 4 is moving over the surface to be cleaned, the bumper outer periphery 29 is in the initial position, and the protrusions 27 of the dust remover 26 do not come into contact with the cleaning body 11. This allows the operation of the rotating brush 9 to be unimpeded and to scrape up dust, improving the efficiency of the cleaning work.

[0038] Dust that has become entangled in the cleaning element 11 while the suction element 4 is moving over the surface to be cleaned is removed by the dust remover 26 when the front surface of the suction element 4 comes into contact with the wall and the bumper outer periphery 29 is deformed to the end position. This makes it possible to keep the rotating brush 9 clean.

[0039] If dust is entangled in the cleaning element 11, it becomes difficult for the cleaning element 11 to contact the surface to be cleaned, and it may not be possible to scrape up the dust on the surface to be cleaned. In contrast, in this embodiment, the dust entangled in the cleaning element 11 is removed by the dust remover 26, and the rotating brush 9 can be kept clean, thereby improving the efficiency of the cleaning work.

[0040] Embodiment 2 Next, a second embodiment will be described with reference to Figures 3 and 4. The description will focus on differences from the first embodiment, and common explanations will be simplified or omitted. Elements that are common to or correspond to the elements described above will be denoted by the same reference numerals.

[0041] Fig. 3 is a perspective view showing vacuum cleaner 1A according to embodiment 2. Fig. 4 is a side view showing vacuum cleaner 1A according to embodiment 2. In addition, in embodiment 2, the directions of "up," "down," "front," and "rear" of vacuum cleaner 1A are determined as a rule as shown by the arrows in Fig. 4.

[0042] As shown in Figures 3 and 4, the electric vacuum cleaner 1A according to the second embodiment includes a vacuum cleaner main body 1a, a handheld control unit 2, and a suction body 4. The suction body 4 includes a joint 5. One end of the handheld control unit 2 is connected to the vacuum cleaner main body 1a. The other end of the handheld control unit 2 is connected to the joint 5.

[0043] When the hand operation unit 2 and the joint unit 5 are connected, the second pin portion 21 is inserted into the first pin receiving portion 14 and comes into contact with the first sheet metal portion 13. Therefore, when the hand operation unit 2 and the joint unit 5 are connected, a conductor is formed from the first conductive portion 12 to the electric wire portion 20, and power is supplied from the hand operation unit 2 to the joint unit 5, and power is supplied to the electric motor 19 through the electric wire portion 20, causing the electric motor 19 to rotate the rotating brush 9.

[0044] In this embodiment, by connecting the suction body 4 to the hand-operated operating unit 2 without using the extension tube 3, the user can bring the suction port 7 into contact with the surface to be cleaned without raising their arm when the surface to be cleaned is close to the hand-operated operating unit 2, making cleaning easier.

[0045] Embodiment 3 Next, a third embodiment will be described with reference to Figures 23 and 24. The description will focus on differences from the first embodiment, and common explanations will be simplified or omitted. Elements that are common to or correspond to the elements described above will be denoted by the same reference numerals.

[0046] Fig. 23 is a perspective view showing vacuum cleaner 101 according to embodiment 3. Fig. 24 is a side view showing vacuum cleaner 101 according to embodiment 3. In addition, in embodiment 3, the directions of "up", "down", "front" and "rear" of vacuum cleaner 101 are determined as a rule as shown by the arrows in Fig. 24.

[0047] As shown in Figures 23 and 24, the vacuum cleaner 101 according to the third embodiment includes a hand-operated unit 2, an extension tube 3, and a suction body 4. The hand-operated unit 2 includes a dust collecting unit 8, a main body 32, and a grip 33. The suction body 4 includes a joint 5. One end of the extension tube 3 is connected to the hand-operated unit 2. The other end of the extension tube 3 is connected to the joint 5.

[0048] The main body 32 includes an electric blower 6 and a secondary battery 34 that supplies power to the electric blower 6. The electric blower 6 generates an airflow and sucks in dust-laden air. The suction body 4 includes a suction port 7. The suction body 4 is placed on a surface to be cleaned, such as a floor. The suction port 7 is an opening for sucking in the dust-laden air. The dust-laden air that flows in through the suction port 7 passes through the joint 5 and the extension tube 3 and flows into the hand-operated control unit 2, where the dust is collected in the dust collection unit 8.

[0049] By connecting the extension tube 3 between the hand-operated unit 2 and the suction body 4, the user can bring the suction port 7 into contact with the surface to be cleaned without bending over when the surface is located far from the hand-operated unit 2. In addition, the vacuum cleaner 101 can be used without supplying power to the hand-operated unit 2 from an external source, making cleaning easier.

[0050] Embodiment 4 Next, a fourth embodiment will be described with reference to Figures 25 and 26. The description will focus on differences from the first embodiment, and common explanations will be simplified or omitted. Elements that are common to or correspond to the elements described above will be denoted by the same reference numerals.

[0051] Fig. 25 is a perspective view showing vacuum cleaner 102 according to embodiment 4. Fig. 26 is a side view showing vacuum cleaner 102 according to embodiment 4. In addition, in embodiment 4, the directions of "up," "down," "front," and "rear" of vacuum cleaner 102 are determined as indicated by the arrows in Fig. 26, in principle.

[0052] 25 and 26, the vacuum cleaner 102 according to the fourth embodiment includes a hand-operated control unit 2 and a suction body 4. The suction body 4 includes a joint 5. One end of the hand-operated control unit 2 is connected to the joint 5.

[0053] In this embodiment, by connecting the suction body 4 to the handheld control unit 2 without using the extension tube 3, the user can bring the suction port 7 into contact with the surface to be cleaned without raising their arm when the surface is close to the handheld control unit 2. In addition, the vacuum cleaner 102 can be started without externally supplying power to the handheld control unit 2, making cleaning easier.

[0054] Although the embodiments have been described above, the vacuum cleaner of the present disclosure is not limited to the embodiments. The vacuum cleaner of the present disclosure is not limited to a canister-type vacuum cleaner such as in embodiment 1 or 2, a stick-type vacuum cleaner such as in embodiment 3, or a handheld vacuum cleaner such as in embodiment 4, but can also be applied to a robot vacuum cleaner that moves autonomously on the surface to be cleaned. [Explanation of symbols]

[0055] REFERENCE SIGNS LIST 1 Electric vacuum cleaner, 1A electric vacuum cleaner, 1a vacuum cleaner body, 2 hand operation unit, 3 extension tube, 4 suction body, 5 joint portion, 6 electric blower, 7 suction port, 8 dust collection unit, 9 rotating brush, 10 shaft portion, 11 cleaning body, 12 first conductive part, 13 first sheet metal part, 14 first pin receiving part, 15 second conductive part, 16 second sheet metal part, 17 second pin receiving part, 18 first pin part, 19 electric motor, 20 electric wire part, 21 second pin part, 22 bumper portion, 23 upper case body, 24 lower case body, 25 flat part, 26 dust removal tool, 27 protrusion portion, 27a comb-tooth convex portion, 27b comb-tooth concave portion, 28 Protrusion, 29 Bumper outer periphery, 30 Double-sided adhesive tape, 31 Anchor portion, 32 Main body portion, 33 Grip portion, 34 Secondary battery, 101 Electric vacuum cleaner, 102 Electric vacuum cleaner

Claims

1. An electric vacuum cleaner having a suction body that sucks dust from a surface to be cleaned, The suction body includes a rotating brush that sweeps up dust from the surface to be cleaned, an electric motor that drives the rotating brush, a bumper portion, and a dust remover that removes dust adhering to the rotating brush, The dust remover is attached to the bumper portion, The bumper portion and the dust remover are configured as separate parts, The dust remover includes a plurality of protrusions arranged along the axial direction of the rotary brush, each of the plurality of protrusions includes a plurality of comb-tooth protrusions and a plurality of comb-tooth recesses, and has a comb-tooth shape in which the comb-tooth protrusions and the comb-tooth recesses are alternately arranged, The comb-teeth recess has a height, The height of the comb-tooth recessed portion is lower than the height of the comb-tooth protruding portion.

2. An electric vacuum cleaner as described in Claim 1, wherein one side portion of the multiple comb-tooth convex portions of one of the protrusions is arranged in a row in a direction diagonal to the axial direction of the rotating brush.

3. At least one of the plurality of comb-tooth protrusions of the protrusion has a protrusion that protrudes in a direction opposite to a rotation direction of the rotary brush, 3. The electric vacuum cleaner according to claim 1, wherein the comb-tooth-shaped protrusions having the protrusions and the comb-tooth-shaped protrusions not having the protrusions are arranged alternately.

4. The bumper portion is made of a soft material having elasticity, The electric vacuum cleaner according to any one of claims 1 to 3, wherein the dust remover is made of a hard material that is harder than the soft material.

5. The electric vacuum cleaner according to any one of claims 1 to 4, wherein the bumper portion and the dust remover are adhered to each other by an adhesive.

6. The electric vacuum cleaner according to any one of claims 1 to 5, wherein the bumper portion and the dust remover are fixed to each other by a mechanical fixing means.

7. The bumper portion is attached to the front surface of the suction body at an angle with respect to the vertical direction of the surface to be cleaned, the dust remover is located at a position where it does not come into contact with the rotating brush while the suction body is moving over the surface to be cleaned, 7. The electric vacuum cleaner according to claim 1, wherein when the front surface of the suction body is pressed against a wall, the bumper portion deforms and moves toward the rotating brush, and the dust remover moves in accordance with the deformation of the bumper portion and comes into contact with the rotating brush.

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