Brake capable of being manually released

Abstract

The brake capable of being manually released comprises a stator, an armature, a rotor and a cover plate which are sequentially arranged in the axial direction, a connecting disc is connected to the outer side of the rotor in a sleeved mode, a driving groove is formed in the end face of at least one of the connecting disc and the armature, balls are arranged in the driving groove and abut against the armature, and the cover plate is connected with the armature. And the connecting disc is adapted to adjust the clamping depth of the balls in the driving grooves through rotation. The connecting disc is connected to the outer side of the rotor in a sleeving mode, the clamping depth of the balls in the driving grooves can be changed by rotating the connecting disc, and therefore the armature is pushed to be close to or away from the rotor, and switching between braking and releasing is achieved. Compared with the prior art, the connecting disc is connected to the outer side of the rotor in a sleeved mode, the connecting disc and the rotor coincide in the axial direction, and therefore the thickness of the brake is reduced, and the brake is more miniaturized.

Description

Technical Field

[0001] This utility model relates to the field of brake technology, and in particular, to a manually releaseable brake. Background Technology

[0002] A brake is a device that decelerates, stops, or keeps a moving part (or moving machinery) in a stopped state. It is a mechanical part that stops or decelerates moving parts in machinery. Among them, the electromagnetic de-energized brake is a friction brake that disengages (releases) when energized and is braked by a spring when de-energized.

[0003] Currently, Chinese patent CN220101873U discloses a manually releaseable brake, including a brake body and a release structure disposed on the brake body. The release structure includes a handle coaxially rotatably connected to the end face of the brake body. Specifically, the handle is mounted on the stator of the brake, which results in an increase in the axial length of the brake, hindering miniaturization. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a manually release brake.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A manually releaseable brake includes a stator, an armature, a rotor, and a cover plate arranged sequentially along the axial direction. A connecting disc is sleeved on the outer side of the rotor. A drive groove is provided on the end face of at least one of the connecting disc and the armature. A ball is provided in the drive groove and abuts against the armature. The connecting disc is adapted to adjust the insertion depth of the ball in the drive groove by rotation.

[0007] Preferably, a handle is provided on the outer peripheral surface of the connecting disk.

[0008] Preferably, the end face of the armature is provided with a placement hole for placing the ball.

[0009] Preferably, the cross-section of the drive groove is substantially circular.

[0010] Preferably, the drive groove is a tapered hole.

[0011] Preferably, the drive groove extends in an arc shape and its depth gradually decreases.

[0012] Preferably, the inner wall of the connecting disc has a notch through which the connecting bolt of the actuator passes.

[0013] Preferably, the stator has a waist-shaped hole at its center.

[0014] Preferably, the brake further includes a transition plate located axially on the side of the cover plate opposite to the stator, the transition plate being bolted to the rotor.

[0015] Preferably, an air jet is provided through the outer peripheral surface of the connecting disk, an air bladder is provided on the air jet, and a compression block is provided on the stator. As the connecting disk rotates, the compression block can compress the air bladder.

[0016] The beneficial effects of this invention are as follows: the connecting disc is sleeved on the outside of the rotor. By rotating the connecting disc, the balls change their insertion depth in the drive groove, thereby pushing the armature closer to or away from the rotor, realizing the switching between braking and releasing. Compared with the prior art, the connecting disc of this invention is sleeved on the outside of the rotor. From an axial perspective, the connecting disc and the rotor coincide, thereby reducing the thickness of the brake and making the brake more compact. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0018] Figure 2 This is an exploded view diagram of an embodiment;

[0019] Figure 3 This is a schematic diagram of the structure of the notch;

[0020] Figure 4 This is a schematic diagram of the steel ball's structure.

[0021] Figure 5 This is a cross-sectional structural diagram of an embodiment.

[0022] Reference numerals: 1. Stator; 2. Armature; 3. Rotor; 4. Cover plate; 5. Connecting disc; 6. Drive slot; 7. Ball bearing; 8. Handle; 9. Placement hole; 10. Notch; 11. Waist-shaped hole; 12. Transition plate; 13. Air jet; 14. Airbag; 15. Extrusion block; 16. Connecting bolt; 17. Hub end cover; 18. Shaft. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] like Figures 1 to 5As shown, a manually releaseable brake includes a stator 1, an armature 2, a rotor 3, and a cover plate 4 arranged sequentially along the axial direction. An electromagnet is typically installed inside the stator 1. The electromagnet attracts the armature 2 to one side of the stator 1, thereby releasing the armature 2 from its contact with the rotor 3. When the electromagnet is de-energized, the armature 2, pushed by a spring, presses against the rotor 3 to achieve braking.

[0025] A connecting bolt 16 is usually provided on the cover plate 4. The connecting bolt 16 passes through the cover plate 4, the armature 2 and the stator 1 in sequence, thereby forming the overall structure of the brake and enabling the rotor 3 to rotate within the space defined between the armature 2 and the cover plate 4.

[0026] A connecting disc 5 is sleeved on the outside of the rotor 3, and a ball bearing 7 is provided between the connecting disc 5 and the armature 2. At least one of the connecting disc 5 and the armature 2 has a drive groove 6 on its end face. The ball bearing 7 is placed in the drive groove 6. As the connecting disc 5 rotates, the depth of the ball bearing 7 in the drive groove 6 will change, and thus the contact stroke of the ball bearing 7 against the armature 2 will also change.

[0027] For example, in the initial state, the ball 7 is deeply inserted into the drive groove 6. After the connecting disc 5 rotates, the ball 7 will disengage from the drive groove 6. This requires an increase in the distance between the connecting disc 5 and the armature 2 to accommodate the change in the relative position of the ball 7. As a result, the ball 7 will abut against the armature 2, compress the spring, and disengage from the rotor 3 to release the brake.

[0028] In some embodiments, the drive groove 6 is essentially a hole-shaped structure, meaning its cross-section is essentially circular. In a preferred example, the drive groove 6 can be a tapered hole, which facilitates the disengagement and insertion of the ball 7 into the drive groove 6, as the tapered surface structure facilitates the guidance of the ball 7.

[0029] In addition, a placement hole 9 for placing the ball 7 can be opened on the end face of the armature 2 to facilitate the installation and positioning of the ball 7.

[0030] In other embodiments, the drive groove 6 may extend along an arc and gradually decrease in depth. This arrangement can be found in Chinese Patent No. CN220101873U, and will not be described in detail here.

[0031] In a preferred embodiment, a handle 8 may be provided on the outer circumferential surface of the connecting disc 5 to facilitate manual rotation of the connecting disc 5 by an operator. In addition, a notch 10 is constructed on the inner wall of the connecting disc 5, through which the aforementioned connecting bolt 16 passes. In this case, the structural strength of the connecting disc 5 is higher because a mounting area with a larger radial thickness is formed between adjacent notches 10, so that the connecting disc 5 is not a thin ring.

[0032] In addition, an air jet 13 is provided through the outer peripheral surface of the connecting disc 5, through which air can flow to one side of the rotor 3, for example, to dissipate heat from the friction plates on the side of the rotor 3, so that the friction plates can maintain better braking performance. In a preferred example, an air bag 14 can also be provided on the air jet 13, and a compression block 15 is provided on the stator 1. For example, when the connecting disc 5 rotates to drive the ball 7 into or further into the drive groove 6, the compression block 15 will compress the air bag 14, which will cause the airflow in the air bag 14 to be sprayed towards one side of the rotor 3, achieving a better heat dissipation effect.

[0033] For example, the compression block 15 can be L-shaped (not shown), with its end extending toward the connecting disc 5 to cause compression interference with the airbag 14 in the circumferential direction. Of course, the airbag 14 can also be adapted to extend toward the stator 1 to achieve the same effect as described above.

[0034] See Figure 5 The stator 1 has a waist-shaped hole 11 at its center, through which the shaft 18 can pass. For example, the shaft 18 can be a stepped shaft, and the shaft 18 is fixed by abutting against the stator 1 at the step. The brake may also include a transition plate 12 located axially on the side of the cover plate 4 away from the stator 1, and the transition plate 12 is bolted to the rotor 3. For example, the hub end cover 17 can be attached to the transition plate 12. This allows the brake of this invention to rotate the hub end cover 17 while the shaft 18 remains fixed, thus expanding the application scenarios of the brake.

[0035] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A manually releasable brake comprising, in axial succession, a stator (1), an armature (2), a rotor (3) and a cover plate (4), characterized in that: The rotor (3) is sleeved with a connecting disc (5), the end face of at least one of the connecting disc (5) and the armature (2) is provided with a driving groove (6), the driving groove (6) is provided with a ball (7), the ball (7) abuts against the armature (2), and the connecting disc (5) is adapted to adjust the clamping depth of the ball (7) at the driving groove (6) by rotation.

2. The manually releasable detent of claim 1, wherein: The outer peripheral surface of the connecting disc (5) is provided with a handle (8).

3. The manually releasable detent of claim 1 wherein: The end face of the armature (2) is provided with a placing hole (9) for placing the ball (7).

4. A manually releasable detent according to claim 1 or 3, characterised in that: The cross section of the driving groove (6) is circular.

5. The manually releasable detent of claim 4 wherein: The driving groove (6) is a tapered hole.

6. The manually releasable detent of claim 1 or 3, wherein: The driving groove (6) extends along an arc and the depth gradually decreases.

7. The manually releasable detent of claim 1 wherein: The inner wall of the connecting disc (5) is provided with an opening (10), and the connecting bolt of the brake passes through the opening (10).

8. The manually releasable detent of claim 1 wherein: The center of the stator (1) is provided with a waist-shaped hole (11).

9. A manually releasable detent according to claim 1 or 8, characterised in that: The brake further comprises a transition plate (12) axially located on the side of the cover plate (4) away from the stator (1), and the transition plate (12) is connected with the rotor (3) by bolts.

10. The manually releasable detent of claim 1, wherein: The outer peripheral surface of the connecting disc (5) is provided with a gas injection port (13), the gas injection port (13) is provided with an air bag (14), the stator (1) is provided with a pressing block (15), and the pressing block (15) can press the air bag (14) as the connecting disc (5) rotates.

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