Brake structure and medical device using same

Abstract

The utility model discloses a brake structure and a medical device using the brake structure, and belongs to the technical field of medical instruments. Comprising a frame body, a brake connecting plate is rotationally connected to the interior of the frame body, a brake pad is arranged on the brake connecting plate, one end of the brake pad extends out of the frame body and is provided with a brake face, and a first elastic piece with one end connected with the brake connecting plate is arranged in the frame body. The first elastic piece is used for providing elastic acting force to limit rotation of the brake connecting plate, and an unlocking mechanism used for driving the brake connecting plate to rotate in the direction away from the brake pad is further arranged in the frame body. According to the brake structure, the brake state can be maintained all the time, and therefore the effect of stably braking the medical device is achieved.

Description

Technical Field

[0001] The utility model relates to a brake structure and a medical device using the brake structure, belonging to the technical field of medical equipment. Background Art

[0002] Braking, also known as braking, refers to the action of stopping or slowing down a running locomotive, vehicle, other transportation tool or machinery. The general principle of braking is to fix a wheel or disc on the high-speed shaft of the machine, install a brake shoe, belt or disc corresponding to it on the machine base, and generate a braking torque under the action of external force. The brake device is a mechanical brake device that can slow down the speed of the vehicle, also known as a reducer.

[0003] In the medical field, there are many medical devices that need to be moved. After the medical device is moved, the staff usually uses the corresponding braking device to fix the medical device. However, in actual work and life, the braking effect of the medical device is poor, which affects the normal operation of the medical device.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a brake structure and a medical device using the brake structure, which solves the problem in the prior art that after the staff moves the medical device, the brake used to fix the medical device has a poor braking effect, affecting the normal operation of the medical device.

[0006] The technical problem to be solved by the present invention is achieved by adopting the following technical scheme: a brake structure, including a frame, a brake link plate rotatably connected to the inner wall of the frame, the brake link plate extends out of the frame at one end away from the frame and is fixed with a brake pad, a brake surface is provided at one end of the brake pad, an elastic member 1 is provided between the frame and the brake link plate, when the brake link plate rotates in a direction away from the brake pad, the elastic member 1 provides an elastic force to limit the rotation of the brake link plate, and an unlocking mechanism for driving the brake link plate to rotate in a direction away from the brake pad is also rotatably connected in the frame. In this embodiment, the elastic member 1 is a compression spring.

[0007] By adopting the above technical solution, the brake structure is in a braking state, that is, when the brake pad abuts against the braking surface, the elastic member between the brake connecting plate and the frame is always compressed, so that the elastic member always has an elastic force on the brake connecting plate, so that the brake pad can press the braking surface, thereby greatly improving the friction between the brake pad and the braking surface, thereby ensuring a stable braking effect. When the staff moves the medical device, the brake structure can always maintain the braking state, thereby providing a stable braking effect for the medical device.

[0008] The utility model is further configured as follows: the unlocking mechanism includes a brake shaft rotatably connected in a frame body, an embedding groove is provided on the outer peripheral wall of the brake shaft, a pad is installed on the through groove through a number of bolts and nuts, a plane and a convex surface are respectively provided on the surface of the pad along the circumferential direction, the distance from each point on the plane to the axis center of the brake shaft is smaller than the distance from each point on the convex surface to the axis center of the brake shaft, and an abutment block with an L-shaped cross-section for abutting against the pad is provided at one end of the brake connecting plate close to the brake shaft.

[0009] By adopting the above technical solution, when the brake structure is in a braking state, the elastic member presses against the brake link plate, and the abutment block on the brake link plate always presses against the plane of the pad. When the staff needs to move the medical device and release the braking state of the brake structure, the staff can rotate the brake shaft, and the rotation of the brake shaft drives the pad to rotate. The rotation of the pad causes the surface of the pad abutting the abutment block to change from a plane to a convex surface. Since the distance from each point on the convex surface to the axis center of the brake shaft is larger than that from each point on the plane, the pad pushes the brake link plate, causing the brake link plate to rotate in the direction away from the brake pad, so that the braking surface no longer contacts the surface to be braked, the braking effect is released, the operation is convenient, and it is convenient for the staff to move the medical device.

[0010] The utility model is further configured as follows: a positioning block is further arranged on the brake connecting plate toward the frame body, a positioning pin is arranged on the bottom wall of the frame body, and a set of elastic members is arranged between the positioning block and the positioning pin.

[0011] By adopting the above technical solution, under the limitation of the positioning block and the positioning pin, the elastic member can be stably maintained between the frame and the brake connecting plate, thereby stably providing elastic force to ensure stable braking of the brake structure.

[0012] The utility model is further configured as follows: an elastic member 2 is sleeved on the brake shaft, a connecting hole is opened on the inner wall of the frame, a limiting rod is arranged on the brake shaft, one end of the elastic member 2 is located in the connecting hole, and the other end abuts against the surface of the limiting rod. In this embodiment, the elastic member 2 is a torsion spring.

[0013] By adopting the above technical solution, when the staff rotates the brake shaft, the limit rod on the brake shaft rotates accordingly, and the end of the elastic member 2 that abuts the limit rod rotates accordingly. Since the end of the elastic member 2 located in the connecting hole remains fixed, the elastic member 2 will be twisted under the drive of the limit rod, thereby generating an elastic force to return the brake shaft to its original position. Therefore, when the staff stops rotating the brake shaft, under the elastic action of the elastic member 2, the brake shaft will immediately reset, the pad will reset accordingly, and the brake connecting plate will also reset accordingly, so that the brake surface can automatically re-fit the brake surface, thereby maintaining the braking state of the brake structure, ensuring the stability of the brake and easy operation.

[0014] The utility model is further configured as follows: both ends of the brake shaft extend out of the frame and are detachably connected with handles with an L-shaped cross section, both ends of the brake shaft are provided with clamping blocks with a rectangular cross section, and the bottom of the handle is provided with a clamping groove that matches the clamping block.

[0015] By adopting the above technical solution, the staff only needs to insert the card block on the brake shaft into the card slot at the bottom of the handle to achieve quick connection of the handle. When the staff turns the handle, since the cross-section of the card block is rectangular, such a card connection can control the rotation of the brake shaft through the handle, so that the handle provides a force point for the staff to rotate the brake shaft, so that the staff can more easily adjust the braking state of the brake structure by driving the brake shaft to rotate through the handle, thereby better ensuring the stability of the medical device.

[0016] The utility model is further configured as follows: two blocking rods are arranged on the outer wall of the frame body, a limiting pin is arranged on one end of the brake shaft extending out of the outer wall of the frame body, and the limiting pin is located between the two blocking rods.

[0017] By adopting the above technical solution, one end of the limit pin is located between the two block rods. Under the joint action of the two block rods and the limit pin, the brake shaft can only rotate within a certain range, ensuring that the abutment block will only abut on the pad, so that the brake structure has only braking and unlocking states, thereby ensuring stable braking of the brake structure.

[0018] The utility model is further configured as follows: a slot is provided on the outer wall of the body along the axial direction of the brake shaft, a stop pin penetrating the outer wall of the frame is slidably connected in the slot, a limit cavity for the limit pin to be inserted is formed between the stop pin extending outside the frame and a stop rod, the limit cavity is used to keep the brake device in an unlocked state after the limit rod is inserted, a pressure plate is provided on the outer peripheral wall of the stop pin, a sliding groove for the pressure plate to slide is provided on the inner peripheral wall of the slot, an elastic member three is provided between the inner wall of the sliding groove and the pressure plate, and an arc surface is also provided on the side of the stop pin facing away from the limit cavity. In this embodiment, the elastic member three is a compression spring.

[0019] By adopting the above technical scheme, when the medical device needs to be moved, the staff can rotate the brake shaft to make the limit pin rotate and abut the arc surface of the stop pin. Due to the guiding effect of the arc surface, when the limit pin continues to rotate, the limit pin will press the stop pin along the direction of the slide groove. In the process of the stop pin being pressed into the slide groove, the elastic member three in the slide groove is compressed by the pressure plate and generates elastic force. When the limit pin enters the limit cavity, the limit pin no longer presses the stop pin. Under the elastic action of the elastic member three, the stop pin will automatically pop out along the direction of the slide groove and abut the outside of the limit pin. The limit pin is limited by the stop rod and the stop pin, so that the brake shaft cannot rotate, and the convex surface of the pad is always abutted against the abutment block, so that the brake pad will not reset after being retracted into the frame and will always remain in the unlocked state. When the medical device needs to be moved, it is avoided that the staff needs to manually press the handle for a long time to unlock the braking state, making it more convenient for the staff to move the medical device.

[0020] The utility model is further configured as follows: one end of the stop pin away from the arc surface extends into the interior of the frame and is provided with a pull rod.

[0021] By adopting the above technical solution, when the staff needs the brake structure to return to the braking state, the staff can pull the pull rod, and the pull rod drives the stop pin to retreat into the slot, thereby releasing the limiting effect of the stop pin on the limit pin. Under the elastic force of the elastic member 2, the brake shaft is reset and the brake structure returns to the braking state. The setting of the pull rod provides a force point for the staff to pull the pull rod, and at the same time avoids the danger of the staff manually pressing the stop pin and the positioning pin hitting the hand with the rapid rotation of the brake shaft, making the staff's operation of resetting the brake shaft safer.

[0022] A medical device comprises the brake structure as described above.

[0023] The beneficial effect of the utility model is that when the brake structure is in a natural state, that is, a braking state, the brake pads always press against the braking surface, thereby greatly improving the friction between the brake pads and the braking surface, thereby ensuring a stable braking effect. When the staff moves the medical device, the brake structure can always maintain the braking state, thereby providing a stable braking effect for the medical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0025] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0026] Figure 3 It is a structural schematic diagram of the frame, the brake connecting plate and the elastic member 1 in the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the frame, unlocking mechanism and handle in the utility model;

[0028] Figure 5 Based Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 6 It is a structural schematic diagram of the brake shaft, handle, cushion block and elastic member 2 in the utility model.

[0030] In the figure: 1, frame; 2, brake connecting plate; 3, brake pad; 4, brake surface; 5, elastic member 1; 6, brake shaft; 7, cushion block; 8, plane; 9, convex surface; 10, abutment block; 11, positioning pin; 12, positioning block; 13, elastic member 2; 14, connecting hole; 15, limit rod; 16, handle; 17, stop rod; 18, limit pin; 19, slot; 20, stop pin; 21, limit cavity; 22, pressure plate; 23, slide groove; 24, elastic member 3; 25, clamping block; 26, clamping groove; 27, bolt; 28, arc surface; 29, embedded groove; 30, pull rod. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific illustrations.

[0032] like Figure 1 and Figure 3 As shown, a brake structure comprises a frame 1, on the inner wall of the frame 1 is rotatably connected a brake link plate 2, the end of the brake link plate 2 facing away from the frame 1 extends out of the frame 1 and is fixed with a brake pad 3, one end of the brake pad 3 is provided with a brake surface 4, an elastic member 5 is provided between the frame 1 and the brake link plate 2, when the brake link plate 2 rotates in a direction away from the brake pad 3, the elastic member 5 provides an elastic force to limit the rotation of the brake link plate 2, and an unlocking mechanism for driving the brake link plate 2 to rotate in a direction away from the brake pad 3 is also rotatably connected in the frame 1, in this embodiment, the elastic member 5 is a compression spring.

[0033] The brake structure is in a braking state, that is, when the brake pad 3 abuts against the braking surface 4, the elastic member 5 between the brake connecting plate 2 and the frame 1 is always compressed, so that the elastic member 5 always has an elastic force on the brake connecting plate 2, so that the brake pad 3 can press the braking surface 4, thereby greatly improving the friction between the brake pad 3 and the braking surface 4, thereby ensuring a stable braking effect. When the staff moves the medical device, the brake structure can always maintain the braking state, thereby providing a stable braking effect for the medical device.

[0034] like Figure 1 and Figure 6As shown, the unlocking mechanism includes a brake shaft 6 rotatably connected in the frame 1, an embedding groove 29 is opened on the outer peripheral wall of the brake shaft 6, and a pad 7 is installed on the through groove through a plurality of bolts 27 and nuts. A flat surface 8 and a convex surface 9 are respectively provided on the surface of the pad 7 along the circumferential direction. The distance from each point of the flat surface 8 to the axis center of the brake shaft 6 is smaller than the distance from each point of the convex surface 9 to the axis center of the brake shaft 6. An abutment block 10 with an L-shaped cross-section for abutting against the pad 7 is provided at one end of the brake connecting plate 2 close to the brake shaft 6.

[0035] When the brake structure is in a braking state, the elastic member 5 presses against the brake link plate 2, and the abutment block 10 on the brake link plate 2 always presses against the plane 8 of the pad 7. When the staff needs to move the medical device and release the braking state of the brake structure, the staff can rotate the brake shaft 6. The rotation of the brake shaft 6 drives the pad 7 to rotate. The rotation of the pad 7 causes the surface of the pad 7 abutting against the abutment block 10 to change from the plane 8 to the convex surface 9. Since the distance from each point on the convex surface 9 to the axis of the brake shaft 6 is larger than that from each point on the plane 8, the pad 7 pushes the brake link plate 2, causing the brake link plate 2 to rotate in the direction away from the brake pad 3, so that the braking surface 4 no longer contacts the surface 4 to be braked, and the braking effect is released. The operation is convenient, and it is convenient for the staff to move the medical device.

[0036] like Figure 3 As shown, the brake connecting plate 2 is further provided with a positioning block 12 in the direction of the frame 1, a positioning pin 11 is provided on the inner bottom wall of the frame 1, and the elastic member 15 is sleeved between the positioning block 12 and the positioning pin 11. Under the limitation of the positioning block 12 and the positioning pin 11, the elastic member 15 can be stably maintained between the frame 1 and the brake connecting plate 2, so as to stably provide elastic force and ensure stable braking of the brake structure.

[0037] like Figure 2 and Figure 3 As shown, an elastic member 13 is sleeved on the brake shaft 6, a connecting hole 14 is opened on the inner wall of the frame 1, a limiting rod 15 is arranged on the brake shaft 6, one end of the elastic member 13 is located in the connecting hole 14, and the other end abuts against the surface of the limiting rod 15. In this embodiment, the elastic member 13 is a torsion spring.

[0038] When the staff rotates the brake shaft 6, the limit rod 15 on the brake shaft 6 rotates accordingly, and the end of the elastic member 2 13 that abuts against the limit rod 15 rotates accordingly. Since the end of the elastic member 2 13 located in the connecting hole 14 remains fixed, the elastic member 2 13 will be twisted under the drive of the limit rod 15, thereby generating an elastic force to return the brake shaft 6 to its original position. Therefore, when the staff stops rotating the brake shaft 6, under the elastic action of the elastic member 2 13, the brake shaft 6 will immediately reset, the pad 7 will reset accordingly, and the brake connecting plate 2 will also reset accordingly, so that the brake surface 4 can automatically re-fit the brake surface 4, thereby maintaining the braking state of the present brake structure, ensuring the stability of the brake and easy operation.

[0039] like Figure 6 As shown, both ends of the brake shaft 6 extend out of the frame 1 and are detachably connected to a handle 16 with an L-shaped cross section. Both ends of the brake shaft 6 are provided with a clamping block 25 with a rectangular cross section. The bottom of the handle 16 is provided with a clamping groove 26 that matches the clamping block 25.

[0040] The staff only needs to insert the block 25 on the brake shaft 6 into the slot 26 at the bottom of the handle 16 to achieve a quick connection of the handle 16. When the staff turns the handle 16, since the cross-section of the block 25 is rectangular, such a connection can control the rotation of the brake shaft 6 through the handle 16, so that the handle 16 provides a force point for the staff to rotate the brake shaft 6, so that the staff can more easily adjust the braking state of the brake structure by driving the brake shaft 6 to rotate through the handle 16, thereby better ensuring the stability of the medical device.

[0041] like Figure 4 As shown, two baffle rods 17 are arranged on the outer wall of the frame 1, and the two baffle rods 17 are respectively arranged on both sides of the brake shaft 6 along the unlocking rotation direction of the brake shaft 6. A limit pin 18 is arranged on one end of the brake shaft 6 extending out of the outer wall of the frame 1, and one end of the limit pin 18 is located between the two baffle rods 17. Under the joint action of the two baffle rods 17 and the limit pin 18, the brake shaft 6 can only rotate within a certain range, ensuring that the abutment block 10 will only abut on the pad 7, so that the present brake structure has only braking and unlocking states, thereby ensuring stable braking of the present brake structure.

[0042] like Figure 4 and Figure 5 As shown, a slot 19 is provided on the outer wall of the frame 1 along the axial direction of the brake shaft 6, and a stop pin 20 penetrating the outer wall of the frame 1 is slidably connected in the slot 19, and a limit cavity 21 for the limit pin 18 to be inserted is formed between the stop pin 20 extending out of the frame 1 and a stop rod 17, and the limit cavity 21 is used to keep the brake device unlocked after the limit rod 15 is inserted, and a pressure plate 22 is provided on the outer peripheral wall of the stop pin 20, and a slide groove 23 for the sliding of the pressure plate 22 is provided on the inner peripheral wall of the slot 19, and an elastic member three 24 is provided between the inner wall of the slide groove 23 and the pressure plate 22, and an arc surface 28 is also provided on the side of the stop pin 20 away from the limit cavity 21. In this embodiment, the elastic member three 24 is a compression spring.

[0043] When the medical device needs to be moved, the staff can rotate the brake shaft 6 to make the limit pin 18 rotate and abut the arc surface 28 of the stop pin 20. Due to the guiding effect of the arc surface 28, when the limit pin 18 continues to rotate, the limit pin 18 will press the stop pin 20 along the direction of the slide groove 23. During the process of the stop pin 20 being pressed into the slide groove 23, the elastic member 3 24 in the slide groove 23 is compressed by the pressure plate 22 and generates elastic force. When the limit pin 18 enters the limit cavity 21, the limit pin 18 no longer presses the stop pin 20. At the time of the elastic member 3 24 Under the action of elasticity, the stop pin 20 will automatically pop out along the direction of the slide groove 23 and abut against the outside of the limit pin 18. The stop rod 17 and the stop pin 20 limit the limit pin 18, so that the brake shaft 6 cannot rotate, and the convex surface 9 of the pad 7 is always in abutment with the abutment block 10, so that the brake pad 3 is away from the braking surface 4 and is no longer reset and always remains in an unlocked state. When the medical device needs to be moved, it avoids the situation where the staff needs to manually press the handle 16 for a long time to unlock the braking state, making it more convenient for the staff to move the medical device.

[0044] like Figure 5 As shown, one end of the stop pin 20 away from the arc surface 28 extends into the interior of the frame 1 and is provided with a pull rod 30. When the staff needs the brake structure to return to the braking state, the staff can pull the pull rod 30, and the pull rod 30 drives the stop pin 20 to retreat into the slot 19, thereby releasing the limiting effect of the stop pin 20 on the limit pin 18. Under the elastic force of the elastic member 13, the brake shaft 6 is reset, and the brake structure returns to the braking state. The setting of the pull rod 30 provides a force point for the staff to pull the pull rod 30, and at the same time avoids the risk of the staff manually pressing the stop pin 20 and the positioning pin 11 hitting the hand with the rapid rotation of the brake shaft 6, making the staff's operation of resetting the brake shaft 6 safer.

[0045] An embodiment of the utility model further provides a medical device using the brake structure, comprising the brake structure as described above.

[0046] Since the medical device adopts all the technical solutions of the brake structure of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described in detail here.

[0047] Working principle:

[0048] In the natural state of the brake structure, that is, the braking state, when the brake pad 3 abuts against the braking surface 4, the elastic member 5 between the brake connecting plate 2 and the frame 1 is always compressed, so that the elastic member 5 always has an elastic force on the brake connecting plate 2, so that the brake pad 3 can press the braking surface 4, thereby achieving a braking effect.

[0049] When the staff needs to move the medical device, they can turn the handle 16 to release the braking state through the unlocking mechanism. Since the cross-section of the clamping block 25 is rectangular, the clamping connection between the handle 16 and the brake shaft 6 can control the rotation of the brake shaft 6 through the handle 16. When the staff turns the handle 16, the handle 16 drives the brake shaft 6 to rotate, and the rotation of the brake shaft 6 drives the pad 7 to rotate. The rotation of the pad 7 causes the surface of the pad 7 abutting the abutment block 10 to change from a plane 8 to a convex surface 9. Since the distance from each point on the convex surface 9 to the axis of the brake shaft 6 is larger than that from each point on the plane 8, the pad 7 pushes the brake connecting plate 2, causing the brake connecting plate 2 to rotate in a direction away from the brake pad 3, so that the brake surface 4 no longer contacts the surface 4 to be braked, and the braking effect is released.

[0050] At the same time, under the joint action of the two blocking rods 17 and the limit pin 18, the brake shaft 6 can only rotate within a certain range, ensuring that the abutment block 10 will only abut on the cushion block 7, so that the brake structure has only braking and unlocking states.

[0051] In addition, the elastic member 2 13 sleeved on the brake shaft 6 allows the limit rod 15 on the brake shaft 6 to rotate accordingly when the staff rotates the brake shaft 6, and the end of the elastic member 2 13 that abuts against the limit rod 15 rotates accordingly. Since the end of the elastic member 2 13 located in the connecting hole 14 remains fixed, the elastic member 2 13 will be twisted under the drive of the limit rod 15, thereby generating an elastic force to return the brake shaft 6 to its original position. Therefore, when the staff stops rotating the brake shaft 6, under the elastic action of the elastic member 2 13, the brake shaft 6 will immediately reset, the pad 7 will reset accordingly, and the brake connecting plate 2 will also reset accordingly, so that the brake surface 4 can automatically re-fit the brake surface 4, thereby maintaining the braking state of the present brake structure.

[0052] In addition, if the staff needs to keep the brake structure in the unlocked braking state for a long time, they can continue to turn the handle 16, the handle 16 drives the brake shaft 6 to rotate, the limit pin 18 on the brake shaft 6 continues to rotate and abuts against the arc surface 28 of the stop pin 20. Due to the guiding effect of the arc surface 28, when the limit pin 18 continues to rotate, the limit pin 18 will press the stop pin 20 along the direction of the slide groove 23. In the process of the stop pin 20 being pressed into the slide groove 23, the elastic member 3 24 in the slide groove 23 is compressed by the pressure plate 22 and produces The elastic force is generated. When the limit pin 18 enters the limit cavity 21, since the limit pin 18 no longer presses the stop pin 20, under the elastic action of the elastic member 3 24, the stop pin 20 will automatically pop out along the direction of the slide groove 23 and abut against the outside of the limit pin 18. The limit pin 18 is limited by the stop rod 17 and the stop pin 20, so that the brake shaft 6 cannot rotate, and the convex surface 9 of the pad 7 is always in abutment with the abutment block 10, so that the brake pad 3 is away from the braking surface 4 and no longer reset, so that the brake structure always maintains an unlocked braking state.

[0053] Finally, the staff can pull the pull rod 30, and the pull rod 30 drives the stop pin 20 to retreat into the slot 19, thereby releasing the limiting effect of the stop pin 20 on the limit pin 18. Under the elastic force of the elastic member 13, the brake shaft 6 is reset, and the brake structure returns to the braking state, and the brake structure completes the reset.

[0054] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A brake structure, characterized in that : It comprises a frame (1), a brake link plate (2) is rotatably connected inside the frame (1), a brake pad (3) is arranged on the brake link plate (2), one end of the brake pad (3) extends outside the frame (1) and is provided with a brake surface (4), an elastic member (5) is arranged inside the frame (1) and one end of the elastic member (5) is connected to the brake link plate (2), when the brake link plate (2) rotates in a direction away from the brake pad (3), the elastic member (5) is used to provide an elastic force to limit the rotation of the brake link plate (2), and an unlocking mechanism for driving the brake link plate (2) to rotate in a direction away from the brake pad (3) is also arranged inside the frame (1).

2. A brake structure according to claim 1, characterized in that: The unlocking mechanism comprises a brake shaft (6) rotatably connected in a frame (1); a cushion block (7) is arranged on the outer peripheral wall of the brake shaft (6); a flat surface (8) and a convex surface (9) are arranged on the surface of the cushion block (7) along the circumferential direction; and an abutment block (10) for abutting against the cushion block (7) is arranged at one end of the brake connecting plate (2).

3. A brake structure according to claim 1, characterized in that: A positioning pin (11) is arranged on the inner wall of the frame (1), a positioning block (12) is arranged on the brake connecting plate (2), and two ends of the elastic member (5) are respectively sleeved on the positioning pin (11) and the positioning block (12).

4. A brake structure according to claim 2, characterized in that: The brake shaft (6) is sleeved with an elastic member 2 (13), the inner wall of the frame (1) is provided with a connecting hole (14), the brake shaft (6) is provided with a limiting rod (15), one end of the elastic member 2 (13) is located in the connecting hole (14), and the other end abuts against the surface of the limiting rod (15).

5. A brake structure according to claim 2, characterized in that: Both ends of the brake shaft (6) extend out of the frame (1) and are detachably connected to handles (16).

6. A brake structure according to claim 2, characterized in that: Two blocking rods (17) are arranged on the outer wall of the frame (1), and a limiting pin (18) is arranged on one end of the brake shaft (6) extending out of the outer wall of the frame (1), and the limiting pin (18) is located between the two blocking rods (17).

7. A brake structure according to claim 6, characterized in that: A slot (19) is provided on the outer wall of the frame (1), a stop pin (20) is slidably connected in the slot (19), and a stop cavity (21) for the stop pin (18) to be inserted is formed between the stop pin (20) and a stop rod (17).

8. A brake structure according to claim 7, characterized in that: A pressure plate (22) is arranged on the outer peripheral wall of the stop pin (20), a sliding groove (23) for the sliding of the pressure plate (22) is opened on the inner peripheral wall of the slot (19), and an elastic member (24) is arranged between the inner wall of the sliding groove (23) and the pressure plate (22).

9. A medical device, characterized in that: The invention comprises the brake structure according to any one of claims 1 to 8.

Images