CN215457740U

CN215457740U - Buffering assembly and cleaning robot

Info

Publication number: CN215457740U
Application number: CN202120880581.8U
Authority: CN
Inventors: 郑连荣
Original assignee: Shenzhen Silver Star Intelligent Technology Co Ltd
Current assignee: Shenzhen Silver Star Intelligent Group Co Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2022-01-11
Anticipated expiration: 2031-04-27

Abstract

The utility model discloses a buffer assembly and a cleaning robot, wherein the buffer assembly is applied to the cleaning robot and comprises: the bumper is movably arranged on the shell of the cleaning robot; the piece that resets, the piece that resets includes two at least elastic portions, and the one end of two at least elastic portions all is connected with cleaning machines people's shell, and the other end of two at least elastic portions all extends in order to can the elastic support bumper towards the bumper, and the one end that cleaning machines people's shell was kept away from to two at least elastic portions still extends along the direction that is close to each other to make one end portion overlap the setting of cleaning machines people's shell is kept away from to two at least elastic portions. The elastic parts in the technical scheme of the utility model can provide better buffer effect, and the arrangement of at least two elastic parts has the advantages of stable stress and difficult occurrence of plastic deformation.

Description

Buffering assembly and cleaning robot

Technical Field

The utility model relates to the technical field of cleaning machines, in particular to a buffer assembly and a cleaning robot.

Background

The cleaning robot is an intelligent cleaning device which can move automatically and can clean a surface to be cleaned automatically, and can impact various objects such as furniture, electrical appliances or walls during moving and cleaning. In order to prevent the cleaning robot from being damaged after colliding with various objects, a bumper movably connected to a housing of the cleaning robot and a restoring member for restoring the bumper are generally provided.

The piece that resets that has now all adopts the shell fragment usually, but the difficult elastic deformation that takes place of shell fragment structure leads to the buffering effect not obvious, and the shell fragment structure also takes place plastic deformation easily, leads to life to be shorter.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a buffer component applied to a cleaning robot, aiming at playing a good buffer action on the cleaning robot for a long time.

To achieve the above object, the present invention provides a cushion assembly comprising:

the bumper is movably arranged on the shell of the cleaning robot;

the piece resets, it includes two at least elastic parts to reset, two at least the one end of elastic part all is connected with cleaning machines people's shell, two at least the other end of elastic part all towards the bumper extends with can elastic support the bumper, two at least the one end that cleaning machines people's shell was kept away from to the elastic part still extends along the direction that is close to each other, so that two at least one end part overlap setting that cleaning machines people's shell was kept away from to the elastic part.

In an embodiment of the utility model, one end of the elastic part, which is far away from the shell of the cleaning robot, is bent to form a bent part, and the bent part is used for abutting against the bumper.

In an embodiment of the present invention, the reset member includes at least two torsion springs, each of the at least two torsion springs includes a rotating main body, and a first elastic leg and a second elastic leg connected to the rotating main body, the rotating main body is rotatably connected to a housing of the cleaning robot, the first elastic leg is limited to the housing of the cleaning robot, and the second elastic leg forms the elastic portion.

In an embodiment of the utility model, the first elastic legs of the at least two torsion springs are fixedly connected.

In an embodiment of the utility model, a limiting groove is concavely arranged on the surface of the bumper facing the resetting piece, and one ends of the at least two elastic parts, which are far away from the shell of the cleaning robot, extend into the limiting groove and elastically support the groove bottom of the limiting groove.

In an embodiment of the utility model, the buffer assembly further comprises an induction assembly, the induction assembly comprises a trigger switch, a touch sensor and a return spring, the trigger switch is movably mounted on a shell of the cleaning robot, the touch sensor is mounted on the shell of the cleaning robot, the return spring is mounted on the shell of the cleaning robot and acts on the trigger switch, and the trigger switch is abutted by the bumper and acts on the return spring so as to abut against the touch sensor.

In an embodiment of the utility model, an elastic member is disposed between a surface of the trigger switch facing the bumper and a surface of the bumper facing the trigger switch.

In an embodiment of the present invention, the bumper is disposed in a shape of "C", so that the surface of the bumper facing the trigger switch is disposed in a concave arc surface;

the surface of the trigger switch facing the bumper is correspondingly set to be a convex cambered surface or the surface of the trigger switch facing the bumper is correspondingly provided with a reset strip extending along the vertical direction.

The utility model also provides a cleaning robot, which comprises a robot body and the buffer assembly, wherein the robot body comprises a shell, and the buffer assembly comprises a bumper and a resetting piece; bumper movable mounting is in cleaning machines people's shell, the piece that resets includes two at least elastic parts, two at least the one end of elastic part all is connected with cleaning machines people's shell, two at least the other end of elastic part all faces the bumper extends with can elastic support the bumper, two at least the one end that cleaning machines people's shell was kept away from to the elastic part still extends along the direction that is close to each other, so that two at least the elastic part is kept away from a tip part overlap the setting of cleaning machines people's shell.

In an embodiment of the utility model, the housing is convexly provided with at least two columns, the reset member includes at least two torsion springs, each of the at least two torsion springs includes a rotating body, a first elastic leg and a second elastic leg, the first elastic leg and the second elastic leg are connected to the rotating body, the rotating body is sleeved outside the corresponding column, the first elastic leg is limited on the housing, and the second elastic leg forms the elastic portion.

In an embodiment of the present invention, the housing includes an upper housing and a lower housing that are detachably connected, the pillar is disposed on the lower housing, the upper housing is provided with a limit portion corresponding to the pillar, the limit portion and the pillar are aligned, and a distance between the pillar and the limit portion is smaller than a height of the rotating body.

According to the technical scheme, one end, far away from the shell of the cleaning robot, of the elastic part is not connected with other components, so that the elastic part can be easily elastically deformed, a better buffering effect is provided for the bumper, at least two elastic parts extend in the direction close to each other, one end part, far away from the shell of the cleaning robot, of each elastic part is arranged in an overlapping mode, when the bumper collides and presses against the at least two elastic parts, the two elastic parts are uniformly stressed, the two elastic parts share the force applied by the bumper together, the two elastic parts are not easily subjected to plastic deformation, and the service life is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a cleaning robot according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of an elastic portion according to the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of a torsion spring according to the present invention;

FIG. 4 is a schematic structural diagram of a cleaning robot according to another embodiment of the present invention;

FIG. 5 is a schematic structural view of an embodiment of an elastic portion and a bumper of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 4 at A;

FIG. 7 is a schematic structural diagram of an embodiment of a bumper, a sensing assembly and a housing of the present invention;

fig. 8 is a schematic structural diagram of an embodiment of the housing, the rotating body and the bumper according to the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a bumper assembly 100 applied to a cleaning robot 1000, the cleaning robot 1000 having a housing 200, the bumper assembly 100 including a bumper 10 and a restoring member 20.

The bumper 10 is a protection member disposed outside the cleaning robot 1000, and the bumper 10 may refer to a single rod, a protection frame formed by combining a plurality of rods, or a regular or irregular sheet metal part, which is not specifically limited herein.

The bumper 10 may be disposed at any one side of the cleaning robot 1000, and in view of the fact that the cleaning robot 1000 has a certain traveling direction and has a front side and a rear side in the traveling direction, and the cleaning robot 1000 is generally cleaned during moving in the front direction, it is preferable that the bumper 10 is disposed at the front side of the cleaning robot 1000 so as to protect the cleaning robot 1000 to the maximum during cleaning of the cleaning robot 1000.

The number of the bumpers 10 may be one or more, specifically, the number of the bumpers 10 may be 1, 2, 3 … … N, N +1, where N is a positive integer greater than 0.

The bumper 10 is movably mounted to the housing 200, and the bumper 10 is movably mounted to the housing 200 in many ways, for example, the bumper 10 includes an outer guard bar and a connecting rod connected to the outer guard bar, the housing 200 is provided with a sleeve adapted to the connecting rod, and the connecting rod extends into the sleeve and is slidably fitted to the sleeve, so that the bumper 10 is movably mounted to the housing 200.

For another example, the bumper 10 is U-shaped and has two opposite ends, and the housing 200 is provided with sliding grooves adapted to the two ends of the bumper 10, and the two ends are slidably engaged with the sliding grooves, so that the bumper 10 is movably mounted to the housing 200.

Of course, the bumper 10 can be movably mounted on the housing 200 by arranging the rack, the gear, the pulley, the chute and other members between the bumper 10 and the housing 200, and the details are not repeated herein.

The restoring member 20 includes at least two elastic portions 21, that is, the number of the elastic portions 21 may be specifically 2, 3 … … N, N +1, where N is a positive integer greater than 0, and the elastic portions 21 may be bar-shaped members or rod-shaped members.

One ends of the at least two elastic portions 21 are connected to the housing 200, the other ends of the at least two elastic portions 21 extend toward the bumper 10 to elastically support the bumper 10, and one ends of the at least two elastic portions 21, which are far away from the housing 200, also extend in a direction of approaching each other, so that one end portions of the at least two elastic portions 21, which are far away from the housing 200, are overlapped.

The elastic portion 21 and the housing 200 may be fixedly connected or elastically connected.

For convenience of understanding, the number of the elastic portions 21 is illustrated as two: when the elastic portion 21 is fixedly connected to the housing 200, the elastic portion 21 may be made of a material that is easily elastically deformed, such as metal, plastic, etc. with low rigidity, the two elastic portions 21 are disposed in a cross shape, when the bumper 10 is pressed, the two elastic portions 21 are elastically deformed to support the bumper 10, and when the bumper 10 is released from the pressing force, the elastic portions 21 elastically act on the bumper 10 and reset the bumper 10.

When the elastic portion 21 is elastically connected to the housing 200, the elastic portion 21 itself may be made of a material that is not easily deformed, such as a metal or a wood material with high rigidity, the two elastic portions 21 are disposed in a cross shape, when the bumper 10 is pressed, the connection portion between the two elastic portions 21 and the housing 200 is elastically deformed, so that the two elastic portions 21 move inward, and when the bumper 10 is relieved of the pressing force, the connection portion between the two elastic portions 21 and the housing 200 elastically acts on the two elastic portions 21, so that the two elastic portions 21 move outward to abut against the bumper 10 and reset the bumper 10.

In this scheme, the end of the elastic part 21 far away from the shell 200 is not connected with other members, so that the elastic part 21 can easily generate elastic deformation, thereby providing a better buffering effect for the bumper 10, at least two elastic parts 21 are arranged to extend along the direction close to each other, one end part of the at least two elastic parts 21 far away from the shell 200 is arranged in an overlapping way, when the bumper 10 collides and abuts against and presses the at least two elastic parts 21, the two elastic parts 21 are stressed uniformly, and the two elastic parts 21 share the force applied by the bumper 10 together, so that the two elastic parts 21 are not easy to generate plastic deformation, the service life is prolonged

In view of the fact that sharp portions such as burrs may be left at the end of the elastic portion 21 away from the housing 200 during the production process, in order to ensure a good fit between the bumper 10 and the elastic portion 21, in an embodiment of the present invention, referring to fig. 1 and fig. 2, one end of the elastic portion 21 away from the housing 200 is bent to form a bent portion 211, and the bent portion 211 is used to abut against the bumper 10. It can be understood that the contact position of the bending portion 211 and the bumper 10 is a smooth arc surface, so that the bumper 10 can be prevented from being damaged in the contact process with the elastic portion 21, the smooth arc surface also plays a guiding role to a certain extent, and the elastic portion 21 and the bumper 10 are prevented from being stuck when in contact.

The number of the elastic portions 21 is two, and the direction in which the two bent portions 211 are bent is a direction in which the ends of the two elastic portions 21 away from the housing 200 are away from each other. The bending angle range is less than 180 ° and greater than 0 °, specifically, 160 °, 120 °, 90 °, 60 °, 30 °, and the like, which is not limited specifically herein.

In an embodiment of the utility model, referring to fig. 1 and fig. 3, the restoring member 20 includes at least two torsion springs 22, each of the at least two torsion springs 22 includes a rotating body 221, a first elastic leg 222 and a second elastic leg 223 connected to the rotating body 221, the rotating body 221 is rotatably connected to the housing 200, the first elastic leg 222 is limited to the housing 200, and the second elastic leg 223 forms the elastic portion 21. The torsion spring 22 can be elastically deformed with a large variation, has a sufficient elastic force, and is not easily plastically deformed.

It should be noted that the first elastic leg 222 may be limited by abutting against the housing 200, or may be limited by being fixedly connected to the housing 200, which is not limited in detail herein.

Further, referring to fig. 3, the first elastic legs 222 of the at least two torsion springs 22 are fixedly connected to each other. It should be noted that the fixed connection of the first elastic legs 222 of the two torsion springs 22 can be understood as follows: the first elastic legs 222 of the two torsion springs 22 are connected together by welding or binding; the fixed connection of the first elastic legs 222 of the two torsion springs 22 can also be understood as follows: the first elastic legs 222 of the two torsion springs 22 are integrally formed, that is, the two torsion springs 22 are substantially made of the same metal strip, and the first elastic legs 222 of the two torsion springs 22 are shared. The arrangement can play a more stable limiting role for the two rotating bodies 221, and the structure of the first limiting elastic foot 222 is omitted, so that the installation is more convenient.

Since there may be some mounting error during mounting, the mounting error may cause the elastic portion 21 to be inclined, resulting in a possibility of sliding in the up-down direction during contact with the bumper 10, causing damage to the elastic portion 21. To avoid this, in an embodiment of the present invention, referring to fig. 4 and 5, a surface of the bumper 10 facing the restoring member 20 is concavely provided with a limiting groove 11, and one end of at least two elastic portions 21 away from the housing 200 extends into the limiting groove 11 and elastically supports a groove bottom of the limiting groove 11. The elastic part 21 extending into the limiting groove 11 can be limited, and the situation of up-and-down sliding can not occur.

It should be noted that one or two or more than two limiting grooves 11 may be provided. When the limiting grooves 11 are arranged in one, one end of each elastic part 21 far away from the shell 200 is limited in one limiting groove 11; when two or more limiting grooves 11 are provided, the end portions of two or more elastic portions 21 are limited in each limiting groove 11, and no specific limitation is made here.

Since the cleaning robot 1000 should turn or change the path to perform a subsequent cleaning motion after colliding with various objects, the bumper assembly 100 may be further provided with a device for sensing whether an object is collided. In an embodiment of the utility model, referring to fig. 4 and fig. 6, the buffering assembly 100 further includes a sensing assembly 30, the sensing assembly 30 includes a trigger switch 31, a touch sensor 32 and a return spring 33, the trigger switch 31 is movably mounted on the housing 200, the touch sensor 32 is mounted on the housing 200, and the return spring 33 is mounted on the housing 200 and acts on the trigger switch 31.

It can be understood that the reset spring 33 acts on the trigger switch 31 to maintain the trigger switch 31 at a fixed position, when the bumper 10 hits an object, moves towards the housing 200 and presses against the trigger switch 31, the trigger switch 31 is forced to act on the reset spring 33 and presses against the touch sensor 32, the touch sensor 32 is pressed to generate an electrical signal, the electrical signal is transmitted to a control device arranged in the cleaning robot 1000, and then the control device controls the cleaning robot 1000 to turn or change the path to avoid the obstacle. During obstacle avoidance, the bumper 10 is far away from an object colliding with the bumper 10, the reset spring 33 continuously acts on the trigger switch 31, the trigger switch 31 is enabled to return to the original position and is abutted against the bumper 10 together with the reset piece 20, and finally the bumper 10 is enabled to reset.

It should be noted that the trigger switch 31 may be slidably connected to the housing 200 or pivotally connected to the housing 200 to be movably mounted to the housing 200. The trigger switch 31 acting on the return spring 33 may mean that the trigger switch 31 presses against the return spring 33, or mean that the trigger switch 31 stretches the return spring 33, and correspondingly, the return spring 33 acting on the trigger switch 31 may mean that the return spring 33 elastically supports the trigger switch 31, or mean that the return spring 33 elastically pulls the trigger switch 31, which is not specifically limited herein.

It should be noted that the sensing member 30 may be one or more, and preferably, the sensing member 30 may be provided in plural and arranged corresponding to both ends of the bumper 10, so that it is further sensed which side of the cleaning robot 1000 hits the object.

Further, an elastic member is provided between a surface of the trigger switch 31 facing the bumper 10 and a surface of the bumper 10 facing the trigger switch 31. This can prevent the trigger switch 31 and the bumper 10 from being worn or damaged by collision when they are in press-contact with each other.

The elastic element can be a rubber pad, a rubber sleeve, a silica gel pad, a silica gel sleeve and other common damping and buffering components.

The contact form between the bumper 10 and the trigger switch 31 may be point contact, line contact, or surface contact.

Further, referring to fig. 4, 6 and 7, the bumper 10 is disposed in a "C" shape or a "U" shape, so that the surface of the bumper 10 facing the trigger switch 31 is disposed in a concave arc surface. The surface of the trigger switch 31 facing the bumper 10 is correspondingly provided with a convex cambered surface or the surface of the trigger switch 31 facing the bumper 10 is correspondingly provided with a reset bar 311 extending along the vertical direction.

It should be noted that the convex arc surface may be matched with the concave arc surface through surface contact or line contact, and the reset bar 311 is matched with the concave arc surface through line contact.

When the convex cambered surface is configured to be in surface contact with the concave cambered surface, the concave cambered surface can be matched with the convex cambered surface, so that the convex cambered surface with relatively small area can be completely attached to the concave cambered surface with relatively large area.

When the convex arc surface is configured to be in line contact with the concave arc surface, the curved surfaces of the concave arc surface and the convex arc surface have different bending degrees, for example, the concave arc surface is an elliptic cylindrical surface, the concave arc surface is a straight cylindrical surface, and when the convex arc surface abuts against the concave arc surface, a bus of the elliptic cylindrical surface is attached to the straight cylindrical surface to form line contact; for another example, the concave arc surface is a relatively large straight cylindrical surface, the convex arc surface is a relatively small straight cylindrical surface, the convex arc surface abuts against the concave arc surface, and a bus of the relatively small straight cylindrical surface is attached to the relatively large straight cylindrical surface to form line contact, wherein the relatively large straight cylindrical surface means that the radius of the bottom surface of the straight cylindrical body corresponding to one of the straight cylindrical surfaces is larger than the radius of the bottom surface of the other straight cylindrical surface; of course, the convex arc surface may also be a convex cylindrical surface such as a parabolic cylindrical surface, and the concave arc surface may also be a concave surface such as a parabolic type, which is not described herein again. The bumper 10 and the trigger switch 31 can be protected by the surface contact fitting and the line contact fitting.

Note that, a part of a wall surface of the bumper 10 facing the convex arc trigger switch 31 may be a planar wall surface, and when the convex arc surface abuts against the bumper 10, the convex arc surface may abut against a planar inner wall to form a line contact.

Referring to fig. 1, the present invention further provides a cleaning robot 1000, wherein the cleaning robot 1000 includes a robot body and a buffer assembly 100; the machine body comprises a shell 200, the buffer assembly 100 comprises a bumper 10 and a reset piece 20, the bumper 10 is movably mounted on the shell 200, the reset piece 20 comprises at least two elastic portions 21, one ends of the at least two elastic portions 21 are connected with the shell 200, the other ends of the at least two elastic portions 21 extend towards the bumper 10 to elastically support the bumper 10, and one ends, far away from the shell 200, of the at least two elastic portions 21 extend along the direction close to each other so that one end portions, far away from the shell 200, of the at least two elastic portions 21 are overlapped.

The specific structure of the buffering assembly 100 refers to the above embodiments, and since the buffering assembly 100 adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In order to facilitate the installation of the restoring member 20, referring to fig. 8, in an embodiment of the present invention, the housing 200 is convexly provided with at least two columns 202a, the restoring member 20 includes at least two torsion springs 22, each of the at least two torsion springs 22 includes a rotating body 221, a first elastic leg 222 and a second elastic leg 223 connected to the rotating body 221, the rotating body 221 is sleeved outside the corresponding column 202a, the first elastic leg 222 is limited on the housing 200, and the second elastic leg 223 forms the elastic portion 21.

In order to prevent the torsion spring 22 from sliding out of the corresponding upright 202a, the upright 202a may be provided with a protrusion for engaging with the rotating body 221, or a stopper rotatably connected to the upright 202 a.

Further, with reference to fig. 8, the housing 200 includes an upper housing 201 and a lower housing 202 detachably connected to each other, the upright 202a is disposed on the lower housing 202, the upper housing 201 is disposed with a limiting portion 201a corresponding to the upright 202a, the limiting portion 201a is aligned with the upright 202a, and a distance between the upright 202a and the limiting portion 201a is smaller than a height of the rotating body 221, so that the torsion spring 22 cannot be separated from the corresponding upright 202a without detaching the upper housing 201 and the lower housing 202.

The detachable connection between the upper casing 201 and the lower casing 202 may be a bolt connection, a snap connection, or the like.

It should be noted that the distance between the upright 202a and the limiting portion 201a is smaller than the height of the rotating body 221, and it can be understood that: the column 202a and the stopper 201a are spaced apart from each other by a distance smaller than the height of the rotating body 221. The distance between the upright 202a and the stopper 201a is smaller than the height of the rotating body 221, and this can be understood as follows: the column 202a is disposed in contact with the stopper portion 201a such that the distance between the column 202a and the stopper portion 201a is zero.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A bumper assembly for use with a cleaning robot, the bumper assembly comprising:

the bumper is movably arranged on the shell of the cleaning robot;

2. The bumper assembly of claim 1, wherein an end of the resilient portion distal from the housing of the cleaning robot is bent to form a bend, the bend configured to abut against the bumper.

3. The buffer assembly as claimed in claim 1, wherein the reset member includes at least two torsion springs, each of the at least two torsion springs includes a rotating body, a first elastic leg and a second elastic leg connected to the rotating body, the rotating body is rotatably connected to the housing of the cleaning robot, the first elastic leg is limited to the housing of the cleaning robot, and the second elastic leg forms the elastic portion.

4. The cushion assembly of claim 3, wherein the first resilient legs of at least two of the torsion springs are fixedly coupled.

5. The bumper assembly according to claim 1, wherein a surface of the bumper facing the restoring member is recessed with a limiting groove, and at least two ends of the elastic portions, which are away from the housing of the cleaning robot, extend into the limiting groove and elastically support a groove bottom of the limiting groove.

6. The buffer assembly of claim 1, further comprising a sensing assembly, wherein the sensing assembly comprises a trigger switch, a touch sensor and a return spring, the trigger switch is movably mounted on a housing of the cleaning robot, the touch sensor is mounted on the housing of the cleaning robot, the return spring is mounted on the housing of the cleaning robot and acts on the trigger switch, and the trigger switch is abutted by the bumper and acts on the return spring to abut against the touch sensor.

7. The bumper assembly of claim 6, wherein a resilient member is disposed between a surface of said trigger switch facing said bumper and a surface of said bumper facing said trigger switch.

8. The cushion assembly of claim 6, wherein the bumper is disposed in a "C" shape such that a surface of the bumper facing the trigger switch is disposed in a concave arc;

9. A cleaning robot, characterized in that it comprises a machine body and a bumper assembly according to any one of claims 1 to 8; the machine body includes a housing coupled to the damping assembly.

10. The cleaning robot as claimed in claim 9, wherein the housing has at least two protruding posts, the restoring member includes at least two torsion springs, each of the at least two torsion springs includes a rotating body, a first elastic leg and a second elastic leg connected to the rotating body, the rotating body is sleeved outside the corresponding post, the first elastic leg is limited to the housing, and the second elastic leg forms the elastic portion.

11. The cleaning robot as claimed in claim 10, wherein the housing includes an upper housing and a lower housing detachably connected to each other, the upright is disposed on the lower housing, the upper housing has a position-limiting portion corresponding to the upright, the position-limiting portion is aligned with the upright, and a distance between the upright and the position-limiting portion is smaller than a height of the rotating body.