A pin-type braking device

Abstract

This utility model relates to the field of brake technology, and more particularly to a pin-type brake device. The pin-type brake device includes: a housing, a brake pin, a coil assembly, and an elastic element. The brake pin is slidably disposed within the housing, the coil assembly is disposed within the housing, and one end of the brake pin slidably passes through the coil assembly. The elastic element is configured to ensure that the other end of the brake pin always tends to extend out of the housing, and the coil assembly enables the other end of the brake pin to tend to retract into the housing. Compared to existing technologies, the pin-type brake device directly locks the joint position through a mechanical brake pin, providing absolute static holding force; the rigid engagement of the mechanical brake pin effectively resists high-frequency vibration or impact loads, preventing accidental displacement; the brake pin experiences no mechanical wear in the locked state, extending its service life; the brake pin's locked position is fixed, ensuring high repeatability; in the event of power failure or malfunction, the brake pin is locked by the elastic element, making it suitable for scenarios with high safety requirements and improving stability.

Description

Technical Field

[0001] This utility model relates to the field of brake technology, and in particular to a pin-type brake device. Background Technology

[0002] Currently, the demand for humanoid robots is increasing, and most manufacturers choose friction brakes and permanent magnet brakes. Friction brakes rely on continuous frictional pressure, which carries the risk of slippage, especially under vibration or overload. Friction brakes may experience slight slippage due to fluctuations in frictional force during vibration. Friction brakes wear down due to continuous friction, requiring periodic replacement of the friction material. Friction brakes are prone to reset deviation. Permanent magnet brakes may fail under high impact due to magnetic attenuation. The performance of permanent magnet brakes may be affected by magnet aging or coil failure. The reset accuracy of permanent magnet brakes is affected by residual magnetism and mechanical clearance.

[0003] Therefore, there is an urgent need for a pin-type braking device to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a pin-type braking device that can provide absolute static holding force, avoid accidental displacement, improve reset accuracy, increase service life, and improve stability.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A pin-type braking device includes: a housing, a braking pin, a coil assembly, and an elastic element. The braking pin is slidably disposed in the housing, the coil assembly is disposed within the housing, and one end of the braking pin slidably passes through the coil assembly. The elastic element is configured to ensure that the other end of the braking pin always tends to extend out of the housing, and the coil assembly enables the other end of the braking pin to tend to retract into the housing.

[0007] As a preferred embodiment of the aforementioned pin-type braking device, the pin-type braking device further includes a mounting base, which is disposed within the housing, and the elastic element is disposed within the mounting base.

[0008] As a preferred embodiment of the aforementioned pin-type braking device, one end of the brake pin has a protrusion along the axial direction, the protrusion passes through one end of the elastic member, and the other end of the elastic member is disposed in the mounting base.

[0009] As a preferred embodiment of the aforementioned pin-type braking device, the elastic element is a compression spring.

[0010] As a preferred technical solution of the above-mentioned pin-type braking device, one end of the brake pin is provided with a first limiting member protruding along the axial direction, the protrusion protruding from the first limiting member, and the end face of the first limiting member can abut against the end face of the mounting base.

[0011] As a preferred embodiment of the aforementioned pin-type braking device, the pin-type braking device further includes a first bearing, which is disposed within the housing, and the brake pin is slidably disposed within the first bearing.

[0012] As a preferred embodiment of the aforementioned pin-type braking device, the pin-type braking device further includes a second bearing, which is disposed within the housing, and the first bearing and the second bearing are spaced apart along the axial direction of the brake pin, with the brake pin slidably passing through the second bearing.

[0013] As a preferred technical solution of the above-mentioned pin-type braking device, the inner wall of the housing is provided with a second limiting member, and the braking pin includes a first connecting member and a second connecting member. The diameter of the first connecting member is smaller than the diameter of the second connecting member, so that a stepped surface is formed between the first connecting member and the second connecting member. The first connecting member slides through the second limiting member, and the stepped surface can abut against the end face of the second limiting member.

[0014] As a preferred embodiment of the aforementioned pin-type braking device, the pin-type braking device further includes an adjusting member, which is disposed on the end face of the second limiting member, and the stepped surface is able to abut against the end face of the adjusting member.

[0015] As a preferred embodiment of the aforementioned pin-type braking device, the coil assembly includes a coil and a frame, the frame being disposed within the housing, and the coil being wound around the frame.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides a pin-type braking device. The pin-type braking device includes: a housing, a braking pin, a coil assembly, and an elastic element. The braking pin is slidably disposed within the housing, the coil assembly is disposed within the housing, and one end of the braking pin slidably passes through the coil assembly. The elastic element is configured to ensure that the other end of the braking pin always tends to extend out of the housing, and the coil assembly enables the other end of the braking pin to tend to retract into the housing. Compared to existing technologies, the pin-type braking device directly locks the joint position through a mechanical braking pin, providing absolute static holding force; the rigid engagement of the mechanical braking pin effectively resists high-frequency vibration or impact loads, preventing accidental displacement; the braking pin experiences no mechanical wear in the locked state, extending its service life; the braking pin's locked position is fixed, ensuring high repeatability; in the event of power failure or malfunction, the braking pin is locked by the elastic element, making it suitable for scenarios with high safety requirements and improving stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the pin-type braking device provided in this embodiment of the utility model;

[0020] Figure 2 This is a structural cross-sectional view of the pin-type braking device provided in this embodiment of the utility model.

[0021] In the picture:

[0022] 1. Outer shell; 11. Second limiting member; 12. External thread; 2. Brake pin; 21. Protrusion; 22. First limiting member; 23. First connecting member; 24. Second connecting member; 3. Coil assembly; 31. Coil; 32. Frame; 4. Elastic member; 5. Mounting base; 6. First bearing; 7. Second bearing; 8. Adjusting member. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] like Figure 1 and Figure 2 As shown, this utility model provides a pin-type braking device. The pin-type braking device includes: a housing 1, a braking pin 2, a coil assembly 3, and an elastic element 4.

[0028] Specifically, the brake pin 2 is slidably disposed on the housing 1, and the coil assembly 3 is disposed inside the housing 1. One end of the brake pin 2 slides through the coil assembly 3, and the elastic element 4 is configured to ensure that the other end of the brake pin 2 always tends to extend out of the housing 1. The coil assembly 3 enables the other end of the brake pin 2 to tend to retract into the housing 1. Compared with the prior art, the pin-type braking device directly locks the joint position through the mechanical brake pin 2, providing absolute static holding force; the rigid engagement of the mechanical brake pin 2 can effectively resist high-frequency vibration or impact loads, avoiding accidental displacement; the brake pin 2 has no mechanical wear in the locked state, extending its service life; the brake pin 2 has a fixed locked position and high repeatability; in the event of power failure or malfunction, the brake pin 2 is locked under the action of the elastic element 4, making it suitable for scenarios with high safety requirements and improving stability.

[0029] Optionally, the pin-type braking device also includes a mounting base 5, which is disposed inside the housing 1, and the elastic element 4 is disposed inside the mounting base 5, which can improve the stability of the elastic element 4.

[0030] Optionally, one end of the brake pin 2 has a protrusion 21 extending axially, the protrusion 21 passing through one end of the elastic member 4, and the other end of the elastic member 4 is disposed in the mounting base 5, which enables the brake pin 2 to be subjected to an axial thrust, allowing the brake pin 2 to move axially and preventing the brake pin 2 from deviating. Further, the elastic member 4 is a compression spring.

[0031] Optionally, one end of the brake pin 2 is provided with a first limiting member 22 protruding axially, and a protrusion 21 protrudes from the first limiting member 22. The end face of the first limiting member 22 can abut against the end face of the mounting base 5. Specifically, the first limiting member 22 is trapezoidal, and the mounting base 5 is provided with a corresponding trapezoidal surface. After the coil assembly 3 is energized, the electromagnetic force overcomes the elastic force of the elastic member 4, causing the brake pin 2 to retract inward until the outer surface of the first limiting member 22 abuts against the trapezoidal surface of the mounting base 5. This is the maximum length of the brake pin 2's retraction, preventing the brake pin 2 from retracting too much. At the same time, it protects the elastic member 4 and prevents damage to the elastic member 4.

[0032] Optionally, the pin-type braking device also includes a first bearing 6, which is disposed inside the housing 1. The brake pin 2 slides through the first bearing 6, which can reduce the friction of the brake pin 2 and facilitate the movement of the brake pin 2.

[0033] Furthermore, the pin-type braking device also includes a second bearing 7, which is disposed within the housing 1. The first bearing 6 and the second bearing 7 are spaced apart along the axial direction of the brake pin 2, and the brake pin 2 slides through the second bearing 7. Specifically, the cooperation of the first bearing 6 and the second bearing 7 increases the contact area with the brake pin 2, further reducing the friction of the brake pin 2 and facilitating its movement. Furthermore, both the first bearing 6 and the second bearing 7 are sliding bearings.

[0034] Optionally, the inner wall of the outer casing 1 is provided with a second limiting member 11. The brake pin 2 includes a first connecting member 23 and a second connecting member 24. The diameter of the first connecting member 23 is smaller than the diameter of the second connecting member 24, so that a stepped surface is formed between the first connecting member 23 and the second connecting member 24. The first connecting member 23 slides through the second limiting member 11, and the stepped surface can abut against the end face of the second limiting member 11. Specifically, under the action of the elastic member 4, one end of the brake pin 2 extends out of the outer casing 1 to lock the joint position. The abutment between the stepped surface and the end face of the second limiting member 11 can limit the extension length of the brake pin 2 and prevent the brake pin 2 from being ejected from the outer casing 1.

[0035] Optionally, the pin-type braking device further includes an adjusting member 8, which is disposed on the end face of the second limiting member 11, and the stepped surface can abut against the end face of the adjusting member 8. Specifically, the adjusting member 8 is a washer, and the extension length of the brake pin 2 is adjusted by increasing or decreasing the adjusting member 8, so that the brake pin 2 can meet the stroke requirements, improve the positioning accuracy, and is suitable for scenarios with high safety requirements (such as medical robots and heavy-duty robotic arms). Further, the positioning accuracy of the brake pin 2 is ±0.01mm.

[0036] Optionally, the coil assembly 3 includes a coil 31 and a frame 32, with the frame 32 disposed inside the housing 1 and the coil 31 wound around the frame 32.

[0037] Optionally, the end of the housing 1 near the brake pin 2 is provided with an external thread 12, which can be threadedly connected to the braking device, making installation convenient and ensuring reliable performance.

[0038] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A latch type braking device characterized by, include: The assembly comprises a housing (1), a brake pin (2), a coil assembly (3), and an elastic element (4). The brake pin (2) is slidably disposed in the housing (1), the coil assembly (3) is disposed inside the housing (1), and one end of the brake pin (2) is slidably inserted through the coil assembly (3). The elastic element (4) is configured to make the other end of the brake pin (2) always tend to extend out of the housing (1), and the coil assembly (3) is capable of making the other end of the brake pin (2) tend to retract into the housing (1).

2. A latch type braking device according to claim 1, wherein The pin-type braking device further includes a mounting base (5), which is disposed inside the housing (1), and the elastic element (4) is disposed inside the mounting base (5).

3. A latch type braking device according to claim 2, wherein One end of the brake pin (2) is provided with a protrusion (21) along the axial direction. The protrusion (21) passes through one end of the elastic member (4), and the other end of the elastic member (4) is disposed in the mounting base (5).

4. A latch type braking device according to claim 3, wherein The elastic element (4) is a compression spring.

5. A pin-type braking device according to claim 3, characterized in that, One end of the brake pin (2) is provided with a first limiting member (22) protruding along the axial direction. The protrusion (21) protrudes from the first limiting member (22), and the end face of the first limiting member (22) can abut against the end face of the mounting base (5).

6. A pin-type braking device according to claim 1, characterized in that, The pin-type braking device further includes a first bearing (6), which is disposed inside the housing (1), and the brake pin (2) slides through the first bearing (6).

7. A pin-type braking device according to claim 6, characterized in that, The pin-type braking device further includes a second bearing (7), which is disposed inside the housing (1), and the first bearing (6) and the second bearing (7) are spaced apart along the axial direction of the brake pin (2), and the brake pin (2) slides through the second bearing (7).

8. A pin-type braking device according to claim 6, characterized in that, The inner wall of the outer shell (1) is provided with a second limiting member (11). The brake pin (2) includes a first connecting member (23) and a second connecting member (24). The diameter of the first connecting member (23) is smaller than the diameter of the second connecting member (24) so ​​that a stepped surface is formed between the first connecting member (23) and the second connecting member (24). The first connecting member (23) slides through the second limiting member (11), and the stepped surface can abut against the end face of the second limiting member (11).

9. A pin-type braking device according to claim 8, characterized in that, The pin-type braking device further includes an adjusting member (8), which is disposed on the end face of the second limiting member (11), and the stepped surface can abut against the end face of the adjusting member (8).

10. A pin-type braking device according to any one of claims 1-9, characterized in that, The coil assembly (3) includes a coil (31) and a frame (32), the frame (32) being disposed inside the housing (1), and the coil (31) being wound around the frame (32).

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