JPH01212526A - Suction port body for electric cleaner - Google Patents

Abstract

PURPOSE:To prevent reduction of rotation torque when a load is applied, by a method wherein the bearing of a rotary brush is resiliently supported by a resilient support body, and a resilient force is exerted in a thrust direction on the rotary brush by means of the resilient support body. CONSTITUTION:The rotation force of an electric motor 41 is transmitted to a rotary brush 51 through a belt 76 run around a pulley 45 secured on a rotary shaft 44 and a pulley 57 secured to the rotary brush 51. A resilient support body 73 resiliently supporting a bearing 63 of the rotary brush 51 from a thrust direction absorbs vibration occasioned by rotation of the rotary brush 51, and the bearing 63 is resiliently supported in a thrust direction, whereby the rotary brush 51 is freely moved in a vertical direction. Since the rotary brush 51 is smoothly vertically moved based on a suction port body 1 in conformity to an uneven surface being a surface to be cleaned, e.g., carpet, a load applied on the rotary brush 51 is always kept at a proper value.

Description

Detailed Description of the Invention (Objective of the Invention) (Industrial Field of Application) The present invention relates to a suction port body for a vacuum cleaner equipped with a rotating brush, and particularly relates to a suction port body for a vacuum cleaner equipped with a rotating brush. Relating to structures that reduce.

(Prior art) Conventionally, as described in, for example, Japanese Utility Model Application Publication No. 52-153359, a rotating brush is installed inside a suction port body facing the suction port formed on the lower surface of the suction port body. A turbine or 1 which is provided and rotated by the suction airflow!
A drive source such as a motor is provided, and rotation is transmitted from this drive source to a rotating brush via a belt and geared down, and this rotating brush scrapes out dust from carpets and the like, while sucking in dust from the dust suction port. A suction port body for a vacuum cleaner is known.

However, in the suction port of this type of vacuum cleaner, vibrations and noise are generated when the rotating brush rotates due to eccentricity of the rotating brush, uneven balance of the heavy machine, and the like.

Therefore, conventionally, for example, electric motors! In the suction port body of the vacuum cleaner i designated as 1IToI, a structure is also adopted in which a bearing that rotatably supports the rotating brush is forcibly supported by a spring or the like from above in the radial direction of the rotating brush.

However, with this conventional structure, the rotating brush cannot move freely, particularly in the vertical direction, due to the unevenness of the carpet, etc., so the load from the carpet acts directly on the drive source, resulting in a decrease in rotational torque or excessive current. There is a risk of an increase.

(12rA to be solved by the invention) As mentioned above, in the suction port body of a conventional vacuum cleaner, unpleasant vibrations and vibrations occur when the rotating brush rotates due to eccentricity of the rotating brush, unevenness of II & balance, etc. There was a problem with noise. In addition, even in vacuum cleaner suction ports in which the rotating brush bearing is forcibly supported from the radial direction by springs, etc., in order to reduce these vibrations and noises, the rotating brush cannot move freely in the radial direction, so the rotation torque is reduced. There have been problems in that the load current of the electric motor, which is the drive source, becomes excessive.

The present invention aims to solve the above-mentioned problems, and by elastically supporting the bearing of the i-rolling brush in the thrust direction by an elastic support, it is possible to prevent the rotational torque from decreasing or the generation of excessive current from occurring. It is an object of the present invention to provide a suction port body for a vacuum cleaner that can reduce vibrations and noise caused by the rotation of a rotating brush without causing any damage. Another object of this invention is to reduce the adverse effects of frictional heat caused by the rotation of the rotating brush in the suction port of this vacuum cleaner. It is also an object of the present invention to facilitate attachment and detachment of the rotating brush to the suction port body without impairing the effects of reducing vibration and noise. It also aims to improve assembly efficiency and reduce costs. Furthermore, the purpose is to prevent the elastic support from coming off. - [Structure of the invention] (Means for solving If!) The suction port body of the vacuum cleaner of the present invention includes a suction port body in which a dust suction port is provided on the lower surface portion, and a suction port body provided within the suction port body. A driving source such as a turbine or an electric motor, a rotating brush provided in the suction port main body facing the ia@dust port and rotationally driven by the driving source, and a rotating brush movably supported by the suction port main body to rotate the brush. A bearing that rotatably supports the brush, and at least one portion of the bearing is elastically supported by an elastic support, and the elastic support applies an elastic force to the rotation and brush in the thrust direction. It is.

Further, in the suction mouth body of a vacuum cleaner, which is provided with a belt that transmits rotation from a drive source to a rotating brush, and in which a pulley on which the belt is stretched is provided at one end of the rotating brush,
It is preferable that an elastically supported bearing is located at an end/portion of the rotary brush opposite to the pulley.

Furthermore, a belt that transmits rotation from a drive source to the rotating brush may always apply lateral pressure to the rotating brush toward a bearing that is elastically supported during rotation of the rotating brush.

Further, an elastic support body for elastically supporting the bearing may be integrally provided with a bumper provided on the suction port body so as to protrude outward over substantially the entire circumference.

Furthermore, an opening facing the rotating brush is provided in the suction port body and is opened and closed by a lid body, and the rotating brush can be attached to and removed from the suction port body together with a bearing, In a suction port body for a vacuum cleaner that is provided with a bumper that protrudes outward across the body, the suction port body is provided with an elastic support that elastically supports the bearing, and the elastic support is attached to the bumper to support the bearing. A covering portion for covering from the side may be provided integrally.

(Function) The suction port body of the vacuum cleaner according to claim 1 of the present invention elastically supports the bearing of the rotating brush from the thrust direction. It is designed to be able to move relatively freely in the radial direction. During cleaning, the bristles of a rotating brush that is rotationally driven by a drive source scrape out dust from a carpet or the like, and the scraped dust is sucked through the dust suction port. At this time, since the bearing of the rotating brush is elastically supported, vibrations due to the rotation of the rotating brush,
Noise is reduced. In addition, the rotating brush moves smoothly in the radial direction, especially in the vertical direction, relative to the suction port body in response to uneven surfaces to be cleaned, such as carpets, so that excessive load is not applied to the rotating brush and the drive source. , a decrease in rotational torque or an excessive increase in load current is prevented.

Further, in the suction port body of the vacuum cleaner according to the second aspect, rotation is transmitted from the drive source to the rotating brush via the belt, and due to the rotation of the rotating brush, an I ! ! Since the belt applies tension to the pulley side end of the friction steam rotating brush, the opposite end where the bearing is elastically supported is smaller than the boolean end. Therefore, deterioration of the elastic support due to heat is prevented, and the adverse effects caused by the above-mentioned steam heat are prevented.

In addition, in the suction port body of the vacuum cleaner according to claim 3, when the rotating brush rotates, side pressure is constantly applied to the rotating brush toward the elastically supported bearing by the belt for transmitting the rotation. Even if there is a gap between the facing surfaces of the bearing and the suction port body in the thrust direction, the elastic support always works. If there is the above-mentioned gap, it becomes easier to remove the rotating brush together with the bearing from the suction port body.

Moreover, in the suction port body of the vacuum cleaner according to claim 4, an elastic support body that elastically supports the bearing is integrally provided in the bumper,
The structure is simplified and assembly is improved.

Furthermore, in the suction port body of the vacuum cleaner according to claim 5, when removing dust attached to the rotating brush, the lid body is opened to open the opening of the suction port body, and the rotating brush is removed from the suction port body together with the bearing. After removing and cleaning the rotating brush, reinstall the rotating brush together with the bearing into the suction port body and close the lid. When the rotating brush is installed in this way, the elastic support provided on the suction port body is covered from the opening side by the covering part integrated with the bumper, so that the bearing is attached to the elastic support from the radial direction. This prevents the elastic support from coming off the suction port body.

(Example) Hereinafter, the structure of an example of the suction port body of a vacuum cleaner of the present invention will be described with reference to FIGS. 1 and 2.

Reference numeral 1 designates a suction port body, which includes a main body case 3 having an opening 2 formed on the front side of the upper part, and a case-like lid body 4 which is detachably attached to the main body case 3 and has an open bottom surface for opening the opening 2. It consists of Further, the main body case 3 includes a lower case member 5 having an open upper surface, and a lower case member 5 having an open upper surface.
It consists of an upper case member (not shown) that is connected to the rear of the upper surface with screws or the like and has an open bottom surface. The lid 4 has knobs (not shown) slidably provided at both side ends of the lid 4, and knobs (not shown) formed at both front side ends of the upper case member. They can be detachably attached to the main body case 3 by engaging with engagement protrusions (not shown) that are respectively engaged and detached. Also,
Bumpers 7 made of an elastic material such as rubber are provided on the front, both side and rear surfaces of the suction port body 1 to protrude outward.

The bumper 7 is held between the lower case member 5, the upper case member, and the lid 4.

Further, inside the suction port main body 1, partition walls 1 are formed integrally with both the case members 5 and joined to each other.
A rotating brush chamber 15, a drive circuit chamber 16, a ventilation chamber 17, an electric storage chamber 18, and a belt chamber 19 are defined by 1.12.13.14. That is, a rotating brush chamber 15 is formed on the front side by a front and rear partition wall 11 extending in the left-right direction and having a communication port 20 formed in the center, and a pair of left and right partition walls 12 extending rearward from both side edges of the communication port 20. A drive circuit chamber 16, a ventilation chamber 17 facing the communication port 20, and a motor storage chamber 18 are formed on the rear side from left to right in FIG. 1, and are formed on one side of the rotating brush chamber 15. A belt chamber 19 is formed on the side of the rotating brush chamber 15 and the electric motor housing chamber 18 by the partition wall 13 formed on the side of the rotary brush chamber 15 and the partition wall 14 formed on one side of the electric motor housing chamber 18 .

Then, facing the rotating brush chamber 15, the suction port main body 1
A dust suction port 21 is formed in the lower surface of the rotary brush v15, and this dust suction port 21 extends from the edge of the rotating brush v15 on the belt chamber 19 side to the opposite edge.

Further, the opening 2 extending over the entire upper surface on the front side of the front and rear partition wall 11 also faces the rotating brush chamber 15. Furthermore, an insertion hole 22 is formed in the rear surface of the suction port body 1 facing the ventilation chamber 17 .

Further, a pair of left and right front wheels 26 and a pair of rear wheels 27 are respectively pivotally attached to the front and rear edges of the bottom of the lower case member 5 so as to be movable back and forth.

Reference numeral 31 denotes a connecting pipe provided at the rear of the suction port main body 1 so as to be rotatable by a predetermined angle, and includes a rotating pipe 32 whose rear part is formed into a substantially cylindrical shape, and a connecting pipe 31 that is rotatable in the circumferential direction at the rear of the rotating pipe 32. It consists of a bent cylindrical connecting tube 33 which is freely fitted and connected. The front portion of the rotation tube 32 is formed into a semi-cylindrical portion 34 with an open front surface, and a support shaft portion 35 is formed on both sides of the semi-cylindrical portion 34 to protrude outward. has been done. The semi-cylindrical portion 34 has its supporting shaft portions 35 on both sides of the partition walls 17 on both sides of the ventilation chamber 17.
The connecting pipe 33 is rotatably fitted into a bearing hole 36 formed at the joint of the ventilation chamber 17, so that it is rotatably supported in the front and rear directions within the ventilation chamber 17. It projects rearward through the insertion hole 22 of the chamber 17.

Further, a connector 37 is fixed to the outer peripheral surface of the connecting tube 33, and one end of a cord 38 is connected to the connector 37. This cord 38 is guided into the drive circuit chamber 16 from the rear surface of the suction port main body 1, and the circuit board 3 supported and fixed within this drive circuit chamber 16.
It is electrically connected to an electronic component 40 mounted on 9. - Also, the suction port main body 1. Inside the electric motor storage room 1B,
An electric motor 41 as a driving source is connected to a pair of rubber supports 42.
The rotating shaft 44 of this electric motor 41 projects into the belt chamber 23 . A gear-shaped pulley 45 is fixed to this rotating shaft 44. Furthermore, the cord 3 is connected via the lead wire 46.
8 and the circuit board 39 and the electric motor 41 are electrically connected.

Reference numeral 51 denotes a rotating brush, which has a brush stand main body 52 that is approximately in the shape of a date and time, with the left and right direction being the thrust direction and the longitudinal crab direction. They are planted side by side or in a spiral. Further, rotating shafts 54 are fixed to both ends of the brush stand main body 52, respectively, coaxially and protruding outward. Furthermore, the brush stand main body, 52
End brush stands 55 and 56, which are separate from the brush stand main body 52 and are located on the sides of both end faces of the brush stand main body 52, are fixed integrally and coaxially with the rotating shaft 54. A gear-shaped pulley 51 is formed on the outer circumferential surface of the end brush stand 55 on the right side in the drawing, and a collar portion 5.8 is formed inside the pulley 57.

Further, a cylindrical first bearing 62 made of a sintered metal or the like is rotatably fitted to the rotary shaft 54 protruding from the outer end surfaces of the brush stands 55 and 56 at both ends via a washer 61. At the same time, a cylindrical second bearing 63 is rotatably fitted to cover the first bearing 62.

Note that the outer circumferential surface of this second bearing 63 has a prismatic shape. The claw portion 64 integrally formed on the inner circumferential surface of the second bearing 63 is engaged with the small-diameter portion 65 formed on the outer circumferential surface of the tip end of the rotating shaft 54, thereby causing this rotation. Bearings 62 and 63 are prevented from being removed from the shaft 54.

Further, the right end face of the rotating brush chamber 15 and the left end face of the belt chamber 19 facing the rotating brush chamber 15 have side surfaces that are integral with the wall forming the side surface of the lower case 5. A groove-shaped bearing holding portion 71 is formed by a U-shaped rib. Both second bearings 63 of the rotary brush 51 are supported within these two-wheel bearing holding portions 71 so as to be detachable and movable in the vertical direction, that is, in the radial direction of the rotary brush 51 in a non-rotating state. . In this way, the rotating brush 51 is rotatably supported within the rotating brush chamber 15. Note that the rotating brush 5
The end of one pulley 57 side is inserted into a holding hole 72 formed in the partition wall 14 on one side of the rotating brush chamber 15 so as to be freely rotatable and vertically movable.

Further, on the inner surface of the bearing holder 71 on the left side in the figure, that is, on the opposite side from the pulley 57, of the pair of bearing holders 71, a felt or A plate-shaped elastic support 73 made of an elastic material such as rubber is adhered with adhesive tape or the like. That is, this elastic support 73 allows the bearing 6 at the end of the rotary brush 51 opposite to the pulley 57 to
3 is elastically supported from the thrust direction of the rotating brush 51, so that an elastic force is applied to the rotating brush 51 in the thrust direction. Further, the distance between the opposing surfaces of the elastic support body 73 and the inner surface of the bearing holding portion 71 on the pulley 57 side is
The distance between the outer end surfaces of the bearings 63 is slightly larger than that of the bearings 63 on the opposite side of the pulley 57 on the elastic support body 73.
3, a gap 74 is created in the thrust direction of the rotating brush 51 between the outer end surface of the bearing 63 on the pulley 57 side and the inner side surface of the bearing holding part 71 on the pulley 57 side. Further, the bumper 7 is integrally formed with a covering portion 75 that is joined to the upper surface of the elastic support 73 and covers the upper surface.

A rotating brush 51 located within the belt chamber 19
An endless timing belt 76 is stretched between the pulley 57 of the electric motor 41 and the pulley 45 of the electric motor 41. This belt 76
is made of an elastic body such as rubber in which a plurality of twisted core wires are embedded in the circumferential direction, and the circumference on the inside of the pulley 57, that is, on the side of the collar 58, is shorter than the circumference on the opposite side. .

Next, the operation of this embodiment will be explained.

During cleaning, the suction port is connected to the main body of the vacuum cleaner via a hose, an extension pipe, or the like.

At this time, the connection pipe 33 of the suction port body is fitted to the extension pipe, and in conjunction with this, the connector 37 provided on the connection pipe 33 is connected to the connector provided on the extension pipe,
A power supply circuit within the vacuum cleaner body and a circuit within the suction port are electrically connected via a power supply line provided along the extension pipe and the hose.

When cleaning, the user slides the suction port main body 1 on the surface to be cleaned by holding the grip part of the hose, but at this time, the rotating tube 32 rotates up and down, and the connecting tube 33 rotates. By applying horizontal rotation to the hand, the suction port body 1 can be moved easily.

Then, the rotational force of the electric motor 1141 is transmitted to the rotating brush 51 via the belt 73 stretched between the pulley 45 fixed to the rotating shaft 44 and the pulley 57 fixed to the rotating brush 51. This rotating brush 51 scrapes up dust from carpets and the like. Then, the scraped up dust is sucked through the dust suction port 21 of the suction port main body 1 by the drive of the electric blower inside the vacuum cleaner main body, and is sucked into the rotating brush chamber 1.
5. It is guided to the dust collection chamber in the vacuum cleaner body through the communication port 20, ventilation chamber 17, connecting pipe 31, extension pipe and hose.

At this point, the elastic support body 73 elastically supports the bearing 63 of the rotating brush 51 from the thrust direction.
It absorbs the vibrations caused by the rotation of the machine, so the user does not feel any unpleasant vibrations in his/her hands, etc., and the noise is reduced.

Further, since the bearing 63 is elastically supported in the thrust direction, the rotating brush 51 can move relatively freely in the vertical direction, which is the radial direction. and,
The suction port body 1 is adjusted according to the unevenness of the surface to be cleaned such as a carpet.
On the other hand, since the rotating brush 51 moves up and down smoothly, the load applied to the rotating brush 51 from the carpet etc. is always moderate, and no excessive load is applied.

Therefore, the rotational torque will not be reduced, and the rotation of the electric motor 41 will not be inhibited and an excessive load current will not flow. Also, the bristles 53 of the rotating brush 51 are strong l? ! There is no friction, and the life of the brush bristles 53 is not shortened.

Also, the belt 76 is connected to the flange 58 of the inner drum pulley 57.
The side circumference is shorter than the outer circumference, so
When the rotating brush 51 rotates, a force is applied to the belt 76 in the direction of the defect A, that is, toward the bearing 63 at the end of the rotating brush 51 opposite to the pulley 57.

The belt 76 then pulls the pulley 5 from the direction in which this force is applied.
Since the rotary brush 51 is pressed by the flange 58 of No. 7, lateral pressure in the direction of the defect A is always forcibly applied to the rotating brush 51.

Therefore, a distance wA 74 is created between the outer end surface of the bearing 63 of the pulley 51 and the back surface inside the bearing holding part 71, whereas the bearing 63 on the opposite side of the pulley 51 is connected to the elastic support 73.
, the elastic support effect for vibration absorption by the elastic support body 73 is improved.

Incidentally, when the rotating brush 51 rotates, the temperature rise due to frictional heat generated due to the sliding between the rotating shaft 54 of the rotating brush 51 and the bearings 62 and 63 is caused by the tension of the belt 76 being applied on the pulley 57 side. The side opposite to pulley 57 is smaller than the side opposite to pulley 57. Therefore, as in the above embodiment, if the bearing 63 at the end of the rotary brush 51 opposite to the pulley 57 is elastically supported by the elastic support 73, deterioration of the elastic support 73 due to heat can be prevented. This can be prevented and the adverse effects of temperature fluctuations caused by rotational friction can be reduced.

Furthermore, after cleaning, etc., remove the removable lid 4,
The opening 2 of the rotating brush chamber 15 is opened, and the freely adjustable rotating brush 51 is passed from the rotating brush chamber 15 through the opening 2.
By removing the bearings 62 and 63 together with the bearings 62 and 63, dust entangled with the rotating brush 51 can be easily removed. After cleaning the rotating brush 51, attach the rotating brush 51 to the bearing 62.
63 to the rotating brush chamber 15 again, and the lid body 4 is opened.

At this time, the distance between the opposing surfaces of the elastic support 73 and the inner surface of the bearing holding portion 71 without the elastic support 13 is larger than the distance between the outer end surfaces of the pair of second bearings 63. , the rotating brush 51 can be easily attached and detached.

The rotating brush 5 is then rotated by the belt 76 as described above.
By applying lateral pressure to 1, the bearing 63 and the elastic support 7
3 or between the inner surface of the suction port body 1 and the rotating brush 51.
It is possible to create a gap for the @ theory and to elastically support the bearing 63 by the elastic support 73 for vibration absorption. - Also, since the upper surface of the elastic support 71 is covered by the covering part 15 integrally formed with the bumper 7, when the rotating brush 51 is reinstalled and the bearing 63 is fitted into the bearing support part 71 from above, the side surface In this case, the bearing 63 does not hit the elastic support 13 bonded to the suction port body 1 from above, so that the elastic support 73 does not peel off from the suction port body 1. This is particularly effective when the elastic support 73 is made of felt.

Note that, as shown in FIG. 3, an elastic support body 77 that elastically supports the bearing 63 may be integrally formed with the bumper 7 made of an elastic body. This will simplify the structure, improve ease of assembly, and reduce the cost.

Furthermore, elastic supports 71 and 77 may be provided for the bearings 63 at both ends of the rotating brush 51, respectively.

Further, in the above embodiment, the electric motor 41 is used as the drive source for rotationally driving the rotating brush 51, but the drive source may be a turbine or the like rotated by the suction airflow.

〔Effect of the invention〕

According to the present invention, the following effects can be obtained.

In the vacuum cleaner suction port according to claim 1, at least one bearing of the rotating brush is elastically supported by an elastic support, and the elastic support applies an elastic force to the rotating brush in the thrust direction. Therefore, even though the rotating brush is supported elastically, it can move relatively freely in the radial direction. Therefore, when a load is applied from a carpet, etc., the rotational torque decreases and the drive source It is possible to reduce the vibrations and HTi caused by the rotation of the rotary brush without causing an excessive increase in the electric load current and without shortening the life of the bristles of the rotary brush.

In addition, in the suction port body of the vacuum cleaner according to claim 2, since the bearing at the end of the rotating brush opposite to the end provided with the boob on which the belt is stretched is elastically supported, the tension of the belt is reduced. The generation of frictional heat due to the rotation of the rotating brush is smaller at the opposite end where no friction is applied, so deterioration of the elastic support due to heat can be prevented, and the adverse effects of temperature rise due to rotational friction can be reduced. Can be done.

Further, in the suction port body of the vacuum cleaner according to claim 3, since the side pressure toward the elastically supported bearing is applied to the rotating brush by the belt, the elastic support effect is improved and the other bearings and the suction port It is possible to provide a gap between the surfaces facing the main body in the thrust direction, and therefore, it is possible to easily attach and detach the rotating brush, which is attached to and detached from the suction port body together with the bearing.

In addition, in the suction port body of the vacuum cleaner according to claim 4, since the elastic support body is integrally provided in the bumper, the structure is simplified.
It is easier to assemble and can be made at a lower cost.

Furthermore, in the suction port body of the vacuum cleaner according to claim 5, the suction port body is provided with an elastic support, and the bumper is integrally provided with a covering portion that covers the elastic support from the opening side for attaching and detaching the rotating brush. When reinstalling the rotating brush that has been removed from the suction port body along with the bearing, the bearing does not hit the elastic support from the radial direction, which reliably prevents the elastic support from coming off the suction port, improving reliability. will improve.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view in a plane direction showing one embodiment of the suction port body of a vacuum cleaner according to the present invention, FIG. 2 is a cross-sectional view in a front direction near the end of the same rotating brush, and FIG. FIG. 2 is a front cross-sectional view of the vicinity of an end of a rotating brush showing an embodiment of the present invention. 1. Suction port body, 2. Opening, 4. Lid body, 7.
Bumper, 21...Dust suction port, 41...Electric motor as a driving source, 51...Rotating brush, 57...Pulley, 62.6
3...Bearing, 73...Elastic support, 75...Coating part, 7
6. Belt, 77. Elastic support.

Claims (5)

[Claims] (1) A suction port body with a dust suction port provided on the bottom surface, a drive source provided within the suction port body, and a drive source provided within the suction port body facing the dust suction port and rotated by the drive source. a rotating brush that is movably supported by the suction port body and a bearing that rotatably supports the rotating brush; at least one portion of the bearing is elastically supported by an elastic support; A suction port body for a vacuum cleaner, characterized in that an elastic force is applied to the rotating brush in a thrust direction by a support body. (2) A belt is provided for transmitting rotation from a drive source to a rotating brush, a pulley on which the belt is stretched is provided at one end of the rotating brush, and an elastically supported bearing is provided opposite to the pulley of the rotating brush. 2. The suction port body for a vacuum cleaner according to claim 1, wherein the suction port body is located at a side end. (3) A belt is provided for transmitting rotation from a drive source to the rotating brush, and the belt constantly applies lateral pressure to the rotating brush toward a bearing that is elastically supported during rotation of the rotating brush. A suction port body for a vacuum cleaner according to claim 1. (4) The suction port body is provided with a bumper projecting outward over substantially the entire circumference, and an elastic support body for elastically supporting the bearing is integrally provided with the bumper. Vacuum cleaner suction body. (5) An opening facing the rotating brush is provided in the suction port body and is opened and closed by a lid, and the rotating brush is detachably attached to the suction port body together with a bearing, and the rotating brush is attached to the suction port body almost all the way around. a bumper that protrudes outward; an elastic support that elastically supports the bearing is provided on the suction port body; and a covering part that covers the elastic support from the opening side is integrally provided on the bumper. The suction port body for a vacuum cleaner according to claim 1, characterized in that: