CN116906473A - Braking mechanism and power device - Google Patents

Abstract

The application discloses a braking mechanism and a power device, wherein the braking mechanism comprises a main body and a driving part, the main body is provided with a first contact part and a second contact part which are mutually connected, and the second contact part is used for braking by contacting with the outside; the driving part is movably connected with the first contact part; wherein the main body has an initial state in which the driving part is separated from the first contact part and a braking state in which a gap exists between the second contact part and the outside in a first direction; in the braking state, the driving portion is in contact with the first contact portion, and the driving body moves in the first direction so that the second contact portion is in contact with the outside. When braking is not needed, the second contact part is not in contact with the outside, and the braking mechanism does not work; when braking is needed, the driving part drives the second contact part to move along the first direction through the first contact part, and the second contact part is in contact with the outside, so that braking is realized, movement and braking of the self-charging robot are conveniently controlled, and meanwhile, the stability of the self-charging robot during working is also improved.

Description

Braking mechanism and power device

Technical Field

The application relates to the technical field of self-charging robots, in particular to a braking mechanism and a power device.

Background

The self-charging robot needs to be controlled by a power device to move, wherein the movement comprises movement and braking.

CN 114188170A discloses a brake assembly, a power tool switch and a power tool, the brake assembly is partially disposed in the power tool switch for shorting the D terminal and the main circuit terminal of the power tool switch, which comprises: the brake pad is arranged on the push rod, the brake spring is arranged between the brake pad and the push rod, the brake pad comprises a short-circuit part, the brake pad is in an initial state and a braking state, and when the brake pad is in the initial state, the short-circuit part is obliquely arranged towards one side close to the D terminal; when the brake block is in a braking state, the short circuit part is arranged in parallel with the push rod, and the short circuit part is respectively abutted with the D terminal and the main circuit terminal. The brake assembly can prolong the service life of the switch of the electric tool and prolong the service life of the electric tool. However, since the above-described method has many components and is inconvenient to control and brake, it is one of the problems to be solved in the prior art how to control the movement of the self-charging robot and to improve the stability of the self-charging robot during operation.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides the braking mechanism and the power device, which can be used for conveniently controlling the movement of the self-charging robot and improving the stability of the self-charging robot during working.

According to an embodiment of the first aspect of the present application, a brake mechanism includes a main body and a driving portion. The main body is provided with a first contact part and a second contact part which are connected with each other, and the second contact part is used for contacting with the outside to brake; the driving part is movably connected with the first contact part; wherein the main body has an initial state in which the driving part is separated from the first contact part and a braking state in which a gap exists between the second contact part and the outside in a first direction; in the braking state, the driving part is in contact with the first contact part, and drives the main body to move in the first direction, so that the second contact part is in contact with the outside.

The braking mechanism provided by the embodiment of the application has at least the following beneficial effects: the braking mechanism includes a main body and a driving portion, the main body also including a first contact portion for being driven by the driving portion and a second contact portion for braking. When braking is not needed, the first contact part is separated from the driving part, the second contact part is not contacted with the outside, and the braking mechanism does not work; when braking is needed, the driving part is contacted with the first contact part, the driving part drives the second contact part to move along the first direction through the first contact part, and the second contact part is contacted with the outside (namely, a moving interface), so that braking is realized, the movement and braking of the self-charging robot are convenient to control, meanwhile, when the self-charging robot works, the braking mechanism works, the second contact part is contacted with the outside, the risk that the self-charging robot moves to influence charging is reduced, and the stability of the self-charging robot during working is improved.

In some embodiments, the driving part has a first driving surface, the first contact part has a first contact surface for contacting the first driving surface, the second contact part has a second contact surface for contacting the outside, the first contact surface and the second contact surface are oppositely arranged along the first direction, the driving part is movably connected to the first contact part along a second direction, in the braking state, the first driving surface and the first contact surface are at least partially jointed, and the second contact surface is contacted with the outside, wherein the second direction intersects with the first direction.

In some embodiments, in the initial state, a distance between the first contact surface and the second contact surface gradually increases in the second direction and in a direction gradually away from the first driving surface.

In some embodiments, the first drive face mates with the first contact face.

In some embodiments, the braking mechanism further includes an elastic member disposed along the first direction, one end of the elastic member being fixedly disposed, and the other end being connected to the main body, the elastic member supporting the main body in the initial state such that the second contact portion has a gap with the outside in the first direction; in the braking state, the elastic member is compressed to bring the second contact portion into contact with the outside.

In some embodiments, the body is provided with a groove penetrating the first contact portion and the second contact portion in the first direction, and the elastic member is disposed in the groove.

In some embodiments, the braking mechanism further includes a fixing member disposed at an end of the groove near the second contact portion, and one end of the elastic member is connected to the fixing member.

In some embodiments, the braking mechanism further includes a connecting member disposed at an end of the groove near the first contact portion, and the connecting member is disposed at the first contact surface, and an end of the elastic member far from the second contact portion is connected with the connecting member.

According to a second aspect of the present application, a power device for a self-charging robot includes a moving mechanism and the braking mechanism according to any of the above embodiments. The moving mechanism is used for driving the self-charging robot to move; the braking mechanism is used for braking the moving mechanism.

In some embodiments, the moving mechanism comprises a moving member and a connecting rod, the braking mechanism comprises an elastic member, a connecting member and a fixing member, the main body is provided with a groove, the elastic member is arranged in the groove, two ends of the elastic member are respectively connected with the connecting member and the fixing member, in a first direction, the moving member is connected with one end of the connecting rod, the connecting rod sequentially penetrates through the connecting member, the elastic member and the fixing member, and the other end of the connecting rod is fixedly arranged.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The application is further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural view of an initial state of a brake mechanism according to an embodiment of the present application;

FIG. 2 is a schematic view showing a braking state of a braking mechanism according to an embodiment of the present application;

fig. 3 is a schematic view of an internal structure of a power unit according to an embodiment of the present application.

Reference numerals: the brake mechanism comprises a power device 10, a steel beam 20, a brake mechanism 100, a main body 110, a first contact part 111, a first contact surface 1111, a second contact part 112, a second contact surface 1121, a groove 113, a driving part 120, a first driving surface 121, an elastic member 130, a fixing member 140, a connecting member 150, a moving mechanism 200, a moving member 210, a connecting rod 220, a connecting part 230, a first direction X and a second direction Y.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present application, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic structural view of an initial state of a brake mechanism according to an embodiment of the present application; FIG. 2 is a schematic view showing a braking state of a braking mechanism according to an embodiment of the present application; fig. 3 is a schematic view of an internal structure of a power unit according to an embodiment of the present application. It should be noted that fig. 1 to 2 cut out a part of the steel beam structure, and fig. 3 conceals a part of the main body so as to show the internal structure.

Please refer to fig. 1-2. An embodiment of the first aspect of the present application provides a brake mechanism 100, the brake mechanism 100 comprising a main body 110 and a driving portion 120. The main body 110 has a first contact portion 111 and a second contact portion 112 connected to each other, the second contact portion 112 for braking in contact with the outside; the driving part 120 is movably connected with the first contact part 111; wherein the main body 110 has an initial state in which the driving part 120 is separated from the first contact part 111 and a braking state in which the second contact part 112 has a gap with the outside in the first direction X; in the braking state, the driving part 120 contacts the first contact part 111, and the driving body 110 moves in the first direction X, so that the second contact part 112 contacts the outside.

Specifically, in some embodiments, the self-charging robots are typically disposed on a specific route, which may be the self-charging robots moving on a steel beam to achieve corresponding matching of vehicles to be charged in different locations. In the braking state, the external environment contacted by the second contact portion 112 may be a medium moving from the charging robot, that is, a surface of the steel beam.

Specifically, in some embodiments, the braking mechanism 100 may not only be used for braking the self-charging robot during movement, but also the braking mechanism 100 may contact with the outside when the self-charging robot does not displace in the external environment, that is, when the self-charging robot is in a working process (when the vehicle to be charged is charged), so as to reduce the risk of the self-charging robot shaking and moving during the working process to affect charging, thereby reducing the probability of accidents such as leakage and fire, and improving the stability of the self-charging robot during working.

Specifically, in some embodiments, the first direction X may be represented in the figure by a direction indicated by the letter X.

Specifically, in some embodiments, the first direction X may be a vertical direction.

Specifically, in some embodiments, the main body 110 has a first contact portion 111 and a second contact portion 112 connected to each other, wherein the first contact portion 111 and the second contact portion 112 may be regarded as two portions constituting the main body 110 in a first direction X, wherein the first contact portion 111 is located above the second contact portion 112, the second contact portion 112 is for contact with a road surface medium moving from the charging robot, the first contact portion 111 is capable of contacting the driving portion 120 by friction braking, so that the driving portion 120 drives the first contact portion 111 to move in the first direction X, more specifically, the driving portion 120 drives the first contact portion 111 to move downward in the first direction X, so that the second contact portion 112 is driven to move downward in the first direction X, so that there is no gap between the second contact portion 112 and the outside in the first direction X, to achieve braking.

The braking mechanism 100 of the embodiment of the application has at least the following advantages: the brake mechanism 100 includes a main body 110 and a driving portion 120, the main body 110 also including a first contact portion 111 for being driven by the driving portion 120 and a second contact portion 112 for braking. When braking is not required, the first contact portion 111 is separated from the driving portion 120, the second contact portion 112 is not in contact with the outside, and the braking mechanism 100 does not operate; when braking is needed, the driving part 120 contacts with the first contact part 111, so that the driving part 120 drives the second contact part 112 to move along the first direction X through the first contact part 111, the second contact part 112 contacts with the outside (namely, a moving interface), thereby realizing braking, facilitating control of movement and braking of the self-charging robot, and simultaneously, when the self-charging robot works, the braking mechanism 100 works to enable the second contact part 112 to contact with the outside, thereby reducing the risk of influencing charging due to movement of the self-charging robot and improving the stability of the self-charging robot during working.

Please refer to fig. 1-2. Specifically, in some embodiments, the driving portion 120 has a first driving surface 121, the first contact portion 111 has a first contact surface 1111 for contacting the first driving surface 121, the second contact portion 112 has a second contact surface 1121 for contacting the outside, the first contact surface 1111 and the second contact surface 1121 are disposed opposite to each other along the first direction X, the driving portion 120 is movably connected to the first contact portion 111 along the second direction Y, and in the braking state, the first driving surface 121 and the first contact surface 1111 are at least partially attached, and the second contact surface 1121 contacts the outside, wherein the second direction Y intersects the first direction X.

Specifically, in some embodiments, in the initial state, the braking mechanism 100 does not need to brake, and the second contact surface 1121 of the second contact portion 112 has a gap in the first direction X from the outside.

Specifically, in some embodiments, the articulation of the drive portion 120 and the first contact portion 111 is achieved by the first drive surface 121 contacting or separating from the first contact surface 1111. In the initial state, the first contact surface 1111 and the first driving surface 121 are not in contact. In the braking state, the first contact surface 1111 and the first driving surface 121 are at least partially in contact, wherein the first driving surface 121 is in contact with the first contact surface 1111, such that the first contact portion 111 has a tendency to move downward in the first direction X.

More specifically, in some embodiments, the first driving surface 121 contacts the first contact surface 1111 such that the first contact portion 111 has a tendency to move downward in the first direction X, and various implementations are possible. For example, the first contact surface 1111 is an upwardly inclined surface in the first direction X, and the portion where the first contact surface 1111 and the first driving surface 121 initially contact is an upwardly inclined start end, the first driving surface 121 is a plane extending along the second direction Y, and as the contact area between the first driving surface 121 and the first contact surface 1111 gradually increases, the impact force due to the buffering interference increases, and the first contact portion 111 tends to move downward in the first direction X.

Alternatively, in other embodiments, the first driving surface 121 is an upward first contact surface 1111 in the first direction X and an upward inclined surface in the first direction X, a portion where the first driving surface 121 initially contacts the first contact surface 1111 is an upward end, the first contact surface 1111 is a plane extending along the second direction Y, and as the contact area between the first driving surface 121 and the first contact surface 1111 increases gradually, the impact force caused by interference is buffered, and the first contact portion 111 tends to move downward in the first direction X.

Specifically, in some embodiments, the first contact surface 1111 and the second contact surface 1121 are disposed opposite to each other along the first direction X, that is, the first contact portion 111 and the second contact portion 112 may be connected along the first direction X, and the first contact surface 1111 is a surface of the first contact portion 111 away from the second contact portion 112 in the first direction X, and the second contact surface 1121 is a surface of the second contact portion 112 away from the first contact portion 111 in the first direction X.

Specifically, in some embodiments, the second direction Y may be represented by a direction indicated by the letter Y. More specifically, in some embodiments, the first direction X may be a vertical direction and the second direction Y may be a horizontal direction. The first direction X and the second direction Y may be perpendicular to each other.

Specifically, in some embodiments, the driving portion 120 may be movably connected to the first contact portion 111 along the second direction Y. That is, the driving part 120 may be connected to a power source such as a motor so that the driving part 120 may move in the second direction Y. When the brake mechanism 100 is in the initial state, the driving portion 120 is spaced apart from the first contact portion 111 along the second direction Y, the driving portion 120 is separated from the first contact portion 111, and the first driving surface 121 is not in contact with the first contact surface 1111. When the brake mechanism 100 is shifted from the initial state to the braking state, the driving portion 120 is moved closer to the first contact portion 111 along the second direction Y, so that the first driving surface 121 and the first contact surface 1111 are at least partially contacted, and the first contact portion 111 drives the second contact portion 112 to move downward in the second direction Y, so that the second contact portion 112 contacts the outside, and braking is achieved. When the braking mechanism 100 is shifted from the braking state to the initial state, the driving portion 120 is moved away from the first contact portion 111 in the second direction Y by the trend, so that the contact portion between the first driving surface 121 and the first contact surface 1111 is gradually separated, so as to release the trend that the first contact portion 111 drives the second contact portion 112 to move downward in the second direction Y, so that the second contact portion 112 is separated from the outside, and the braking is completed.

By driving the driving part 120 to move along the second direction Y, contact and separation of the first driving surface 121 of the driving part 120 and the first contact surface 1111 of the first contact part 111 are achieved, transition of the brake mechanism 100 between the initial state and the braking state is achieved, and convenience in controlling operation of the brake mechanism 100 is improved.

Please refer to fig. 1-2. Specifically, in some embodiments, in the initial state, the distance between the first contact surface 1111 and the second contact surface 1121 gradually increases in the direction of the second direction Y and gradually away from the first driving surface 121. That is, the first contact surface 1111 is an upwardly inclined surface in the first direction X, and a portion where the first contact surface 1111 initially contacts the first driving surface 121 is an upwardly inclined start end. By machining the first contact surface 1111 to be inclined, it is achieved that the first contact portion 111 can move the second contact portion 112 downward in the first direction X after the first driving surface 121 contacts the first contact surface 1111.

Specifically, in some embodiments, the first drive surface 121 is correspondingly matched to the first contact surface 1111. That is, the first driving surface 121 is an upward first contact surface 1111 in the first direction X, an upward inclined surface in the first direction X, and a portion where the first driving surface 121 comes into contact with the first contact surface 1111 at the beginning is an upward inclined trailing end.

Through the matching setting of the first driving surface 121 and the first contact surface 1111, in the process of the contact and separation of the first driving surface 121 and the first contact surface 1111, the movement is smoother, the first driving surface 121 and the first contact surface 1111 cannot interfere with each other, the probability of damaging the surface of the first driving surface 121 or the first contact surface 1111 is reduced, and the service life is prolonged.

Please refer to fig. 1 to 3. Specifically, in some embodiments, the brake mechanism 100 further includes an elastic member 130 disposed along the first direction X, one end of the elastic member 130 is fixedly disposed, and the other end is connected to the main body 110, and in an initial state, the elastic member 130 supports the main body 110 such that the second contact portion 112 has a gap with the outside in the first direction X; in the braking state, the elastic member 130 is compressed to bring the second contact portion 112 into contact with the outside.

Specifically, in some embodiments, the elastic member 130 is disposed along the first direction X. The position of the lower end of the elastic member 130 in the first direction X may be fixedly set, and the upper end of the elastic member 130 in the first direction X is connected to the main body 110.

Specifically, in some embodiments, the elastic member 130 may be compressed when the elastic member 130 is installed, and after the installation is completed, the elastic member 130 restored to the natural state by the compressed state may support the body 110 such that the second contact surface 1121 of the second contact portion 112 has a gap with the outside in the first direction X when the brake mechanism 100 is in the initial state.

Specifically, in some embodiments, in the braking state of the braking mechanism 100, the driving portion 120 drives the main body 110 to move downward in the first direction X through the first contact portion 111, so that the second contact portion 112 contacts with the outside, and at this time, the elastic member 130 is compressed. When the driving part 120 is separated from the first contact part 111, the elastic member 130, which is restored to the natural state from the compressed state, may support the body 110 upward in the first direction X such that the second contact part 112 has a gap with the outside in the first direction X such that the brake mechanism 100 is converted from the braked state to the initial state.

Specifically, in some embodiments, the elastic member 130 may be a spring or an elastic rubber, or the like.

Specifically, in some embodiments, the elastic member 130 may be disposed inside the body 110. In other embodiments, the elastic member 130 may be disposed outside the body 110.

By providing the elastic member 130, when the brake mechanism 100 is in the initial state, the second contact portion 112 keeps a gap with the outside, and meanwhile, by compressing and resetting the elastic member 130, the brake mechanism 100 is switched from the braking state to the initial state, so that the convenience in use of the brake mechanism 100 is improved.

Please refer to fig. 1 to 3. Specifically, in some embodiments, the main body 110 is provided with a groove 113, the groove 113 penetrates the first contact portion 111 and the second contact portion 112 along the first direction X, and the elastic member 130 is disposed in the groove 113.

Through being equipped with recess 113 at main part 110 to set up elastic component 130 in recess 113, carry out spacingly through recess 113 to elastic component 130 on the one hand, with the probability that reduces elastic component 130 and take place the skew in compression reset process, on the other hand, set up elastic component 130 in main part 110's inside, be favorable to spatial arrangement, improved space utilization.

Specifically, in some embodiments, the braking mechanism 100 further includes a fixing member 140, where the fixing member 140 is disposed at an end of the groove 113 near the second contact portion 112, and one end of the elastic member 130 is connected to the fixing member 140.

Specifically, in some embodiments, a lower end of the elastic member 130 in the first direction X may be connected with the fixing member 140. The connection may be by gluing or welding, or may be by integrally molding the elastic member 130 and the fixing member 140.

Specifically, in some embodiments, the fixing member 140 may be fixedly connected with other components of the self-charging robot different from the braking mechanism 100, such that the fixing member 140 may fix the position of the elastic member 130 such that the elastic member 130 may be deformed with respect to the main body 110.

Specifically, in some embodiments, the fixing member 140 may be a plate-like member disposed perpendicular to the first direction X.

By providing the fixing member 140 to be connected with the elastic member 130 to fix the position of the elastic member 130, the stability of the brake mechanism 100 is improved.

Specifically, in some embodiments, the brake mechanism 100 further includes a connecting member 150, the connecting member 150 is disposed at an end of the groove 113 near the first contact portion 111, the connecting member 150 is disposed at the first contact surface 1111, and an end of the elastic member 130 away from the second contact portion 112 is connected to the connecting member 150.

Specifically, in some embodiments, the connection member 150 may be connected with an upper end of the elastic member 130 in the first direction X.

Specifically, in some embodiments, the connection member 150 may be disposed on the first contact surface 1111, where the connection member 150 is disposed at a position offset from the first driving portion 120, and the connection member 150 interferes with the driving portion 120 when the driving portion 120 is connected to the first contact portion 111.

Specifically, in some embodiments, the connection member 150 may be a plate-like member disposed perpendicular to the first direction X.

Please refer to fig. 1 to 3. A second aspect of the present application provides a power plant 10 for a self-charging robot, comprising a movement mechanism 200 and a braking mechanism 100 of any of the embodiments described above. The moving mechanism 200 is used for driving the self-charging robot to move; the braking mechanism 100 is used for braking of the moving mechanism 200.

Specifically, in some embodiments, the power plant 10 is a moving part of a self-charging robot, controlling movement and braking of the self-charging robot. The moving mechanism 200 is used for driving the self-charging robot to move; the braking mechanism 100 is used for braking of the moving mechanism 200.

Specifically, in some embodiments, the moving mechanism 200 includes a moving member 210 and a connecting rod 220, the braking mechanism 100 includes an elastic member 130, a connecting member 150 and a fixing member 140, the main body 110 is provided with a groove 113, the elastic member 130 is disposed in the groove 113, two ends of the elastic member are respectively connected to the connecting member 150 and the fixing member 140, in the first direction X, the moving member 210 is connected to one end of the connecting rod 220, the connecting rod 220 sequentially penetrates through the connecting member 150, the elastic member 130 and the fixing member 140, and the other end of the connecting rod 220 is fixedly disposed.

Specifically, in some embodiments, the moving member 210 may be a moving wheel, which is placed on the outside (i.e., the steel beam) and on which the moving wheel may move.

Specifically, in some embodiments, the connection rod 220 may be disposed along the first direction X, and a lower end of the connection rod 220 in the first direction X is connected to the moving member 210.

Please refer to fig. 1 to 3. Specifically, in some embodiments, the connecting rod 220 sequentially penetrates through the connecting member 150, the elastic member 130 and the fixing member 140, and the other end of the connecting rod 220 is fixedly disposed. The fixing member 140 may be disposed on the moving wheel, two ends of the elastic member 130 are respectively connected with the connecting member 150 and the fixing member 140, and the elastic member 130 is sleeved on the connecting rod 220, that is, the connecting rod 220 also penetrates through the groove 113 of the main body 110.

Specifically, in some embodiments, the connecting rod 220 is provided at an upper end thereof in the first direction X with a connecting portion 230, the self-charging robot has a housing, the connecting portion 230 may be a bolt or the like, and the connecting portion 230 is fixedly connected with the housing, thereby achieving the position fixing of the fixing member 140.

The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the application and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A brake mechanism, the brake mechanism comprising:

a main body having a first contact portion and a second contact portion connected to each other, the second contact portion for braking in contact with the outside;

the driving part is movably connected with the first contact part;

wherein the main body has an initial state in which the driving part is separated from the first contact part and a braking state in which a gap exists between the second contact part and the outside in a first direction; in the braking state, the driving part is in contact with the first contact part, and drives the main body to move in the first direction, so that the second contact part is in contact with the outside.

2. The brake mechanism according to claim 1, wherein the driving portion has a first driving surface, the first contact portion has a first contact surface for contacting the first driving surface, the second contact portion has a second contact surface for contacting an outside world, the first contact surface and the second contact surface are disposed opposite to each other in the first direction, the driving portion is movably connected to the first contact portion in a second direction, and in the braking state, the first driving surface and the first contact surface are at least partially fitted, and the second contact surface is in contact with the outside world, wherein the second direction intersects the first direction.

3. The brake mechanism of claim 2, wherein in the initial state, a distance between the first contact surface and the second contact surface gradually increases in the second direction and in a direction gradually away from the first drive surface.

4. A brake mechanism according to claim 3, wherein the first drive face is matched to the first contact face.

5. The brake mechanism according to claim 2, further comprising an elastic member provided in the first direction, one end of the elastic member being fixedly provided and the other end being connected to the main body, the elastic member supporting the main body in the initial state so that the second contact portion is spaced from the outside in the first direction; in the braking state, the elastic member is compressed to bring the second contact portion into contact with the outside.

6. The brake mechanism of claim 5, wherein the body is provided with a groove extending through the first contact portion and the second contact portion in the first direction, the resilient member being disposed in the groove.

7. The brake mechanism of claim 6, further comprising a securing member disposed at an end of the recess adjacent the second contact portion, the resilient member having an end connected to the securing member.

8. The brake mechanism of claim 6, further comprising a connector disposed at an end of the groove proximate the first contact portion, and the connector is disposed at the first contact surface, and an end of the elastic member distal from the second contact portion is connected to the connector.

9. The power device for from charging robot, its characterized in that includes:

the moving mechanism is used for driving the self-charging robot to move;

a braking mechanism as claimed in any one of claims 1 to 8 for braking of the moving mechanism.

10. The power device according to claim 9, wherein the moving mechanism comprises a moving member and a connecting rod, the braking mechanism comprises an elastic member, a connecting member and a fixing member, the main body is provided with a groove, the elastic member is arranged in the groove, two ends of the elastic member are respectively connected with the connecting member and the fixing member, in a first direction, the moving member is connected with one end of the connecting rod, the connecting rod sequentially penetrates through the connecting member, the elastic member and the fixing member, and the other end of the connecting rod is fixedly arranged.