Ratchet wheel self-locking mechanism and brake with ratchet wheel self-locking mechanism

Abstract

The utility model provides a ratchet wheel self-locking mechanism and a brake with the ratchet wheel self-locking mechanism. The ratchet wheel self-locking mechanism comprises a ratchet wheel; the pawl is arranged on one side of the ratchet wheel and can rotate around one end far away from the ratchet wheel; the first spring is arranged on one side, in the length direction, of the pawl, and the end, close to the pawl, of the first spring abuts against the pawl; and the first driving assembly is arranged on the other side, in the length direction, of the pawl and abuts against the pawl, and the first driving assembly and the first spring drive the end, close to the ratchet wheel, of the pawl to abut against or be away from ratchets of the ratchet wheel so that locking or unlocking can be achieved. According to the ratchet wheel self-locking mechanism provided by the embodiment of the utility model, the parking state can be maintained simply and reliably when the motor in the parking mechanism is powered off.

Description

Technical Field

[0001] The utility model relates to the field of automobile brakes, in particular to a ratchet self-locking mechanism and a brake having the same. Background Art

[0002] Brakes are important components for cars to achieve braking functions. When the vehicle is parked, the driver only needs to press the parking brake button inside the car. The motor integrated in the rear brake receives the braking command and drives the axis of the parking mechanism to move, thereby pushing the friction plate to press the brake disc, generating braking torque on the rear wheel, and keeping the vehicle stationary.

[0003] However, if the parking function is maintained, the motor driving the parking mechanism needs to be powered on all the time to keep the parking mechanism working. If the motor is powered off unexpectedly, the parking function will fail. Utility Model Content

[0004] In view of this, the utility model provides a ratchet self-locking mechanism and a brake having the same, which can simply and reliably maintain the parking state when the motor in the parking mechanism is powered off.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The ratchet self-locking mechanism according to the first embodiment of the utility model comprises:

[0007] ratchet;

[0008] A pawl, the pawl being arranged on one side of the ratchet wheel and being rotatable around an end away from the ratchet wheel;

[0009] A first spring, wherein the first spring is arranged at one side of the pawl along the length direction, and an end of the first spring close to the pawl abuts against the pawl, and an end of the first spring away from the pawl is fixed;

[0010] a first driving assembly, the first driving assembly being arranged at the other side of the pawl along the length direction and abutting against the pawl,

[0011] The first driving assembly and the first spring drive the pawl so that one end close to the ratchet wheel abuts against / moves away from the ratchet teeth of the ratchet wheel to achieve locking / unlocking.

[0012] Furthermore, one end of the pawl close to the ratchet wheel forms an end adapted to the ratchet teeth of the ratchet wheel.

[0013] Furthermore, the ratchet teeth on the ratchet wheel are arranged to be inclined in a clockwise or counterclockwise direction.

[0014] Furthermore, a first groove adapted to the first spring is formed on a side of the pawl close to the first spring.

[0015] Furthermore, the first driving component comprises:

[0016] A solenoid valve, the solenoid valve being arranged on the other side of the pawl along the length direction;

[0017] A push rod is arranged between the electromagnetic valve and the ratchet, one end of the push rod is connected to the electromagnetic valve, and the other end abuts against the ratchet.

[0018] Furthermore, a second groove adapted to the end of the push rod is formed on the side of the pawl close to the push rod.

[0019] Furthermore, the first driving component further comprises:

[0020] a second spring, wherein the second spring is sleeved on the extending section of the push rod;

[0021] A limit block, one end of the push rod close to the pawl is detachably connected to the limit block, so that one end of the second spring abuts against the limit block and the other end abuts against the solenoid valve.

[0022] Furthermore, the first driving component comprises:

[0023] a first drive motor, the first drive motor being arranged at the other side of the pawl along the length direction;

[0024] A push rod is disposed between the first driving motor and the ratchet, with one end of the push rod connected to the first driving motor and the other end abutting against the ratchet.

[0025] Furthermore, the ratchet self-locking mechanism also includes a housing,

[0026] The ratchet, the pawl, the first spring and the first driving assembly are installed inside the housing.

[0027] The brake according to the second embodiment of the utility model comprises:

[0028] A clamp body, one end of which is provided with a clamping groove;

[0029] A brake assembly, the brake assembly being disposed in the clamping groove;

[0030] A second drive assembly, the second drive assembly is mounted on the other end of the caliper body, and an output end of the second drive assembly is connected to the brake assembly;

[0031] a second drive motor, wherein an output shaft of the second drive motor is connected to an input end of the second drive assembly;

[0032] The ratchet self-locking mechanism of any embodiment of the first aspect above, wherein the ratchet of the ratchet self-locking mechanism is connected to the output shaft of the second drive motor, and the ratchet self-locking mechanism is used to control the second drive component to drive the brake component to maintain the parking function when the second drive motor stops working.

[0033] The above technical solution of the utility model has at least one of the following beneficial effects:

[0034] According to the ratchet self-locking mechanism of the embodiment of the utility model, the first drive assembly drives the pawl to lift away from the ratchet to be in a non-self-locking state, at which time the first spring on the other side is deformed by force. By driving the first drive assembly to retract, the pawl is pressed against the pawl under the force of the first spring to achieve locking. Therefore, when the ratchet self-locking mechanism of the utility model is installed in the parking mechanism and connected to the output shaft of the motor, it can be achieved that even when the motor in the parking mechanism is powered off, the parking state can still be simply and reliably maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a ratchet self-locking mechanism according to an embodiment of the utility model;

[0036] Figure 2 It is a schematic diagram of the ratchet self-locking mechanism of the embodiment of the utility model in a non-parking state;

[0037] Figure 3 It is a schematic diagram of the ratchet self-locking mechanism of the embodiment of the utility model in the parking state;

[0038] Figure 4 This is a schematic structural diagram of a ratchet self-locking mechanism of another embodiment of the utility model;

[0039] Figure 5 This is a schematic structural diagram of a brake according to an embodiment of the utility model.

[0040] Reference numerals: 10. ratchet; 20. pawl; 21. end; 30. first spring;

[0041] 40. First drive assembly; 41. Solenoid valve; 42. First drive motor; 43. Push rod; 44. Second spring; 45. Limit block;

[0042] 50. Clamp body;

[0043] 60. Brake components;

[0044] 70. Second drive assembly; 80. Second drive motor; 90. Brake disc. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0046] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0047] The ratchet self-locking mechanism according to the embodiment of the utility model is first described in detail below with reference to the accompanying drawings.

[0048] According to the ratchet self-locking mechanism of the first embodiment of the utility model, Figure 1 As shown, it may include: a ratchet 10 , a pawl 20 , a first spring 30 and a first driving assembly 40 .

[0049] The pawl 20 is disposed on one side of the ratchet 10, and can rotate around an end away from the ratchet 20. The ratchet 10 is used to be installed on the output shaft of the motor in the parking mechanism.

[0050] The first spring 30 is disposed on one side of the pawl 20 along the length direction, and one end of the first spring 30 close to the pawl 20 abuts against the pawl 20 , while one end of the first spring 30 away from the pawl 20 is fixed.

[0051] The first driving assembly 40 is disposed on the other side of the pawl 20 along the length direction and abuts against the pawl 20 .

[0052] The first driving assembly 40 and the first spring 30 drive the end of the pawl close to the ratchet 20 to abut against / move away from the ratchet teeth of the ratchet 20 to achieve locking / unlocking.

[0053] Specifically, according to the ratchet self-locking mechanism of the embodiment of the utility model, a pawl 20 is arranged on one side of the ratchet 10, and the pawl 20 can rotate around an end away from the ratchet 10, and a first spring 30 and a first drive assembly 40 are respectively arranged on both sides of the length direction of the pawl 20, and the first spring 30 and the first drive assembly 40 respectively abut against both sides of the pawl 20. The pawl 20 is driven by the first drive assembly 40 to be lifted away from the ratchet 20 to be in a non-self-locking state, at which time the first spring 30 on the other side is deformed by force; and by driving the first drive assembly 40 to retract, the pawl 20 is pressed against the pawl 20 under the action of the first spring 30 to reset, so as to achieve locking. Therefore, when the ratchet self-locking mechanism of the utility model is installed in the parking mechanism and connected to the output shaft of the motor, it can be realized that even when the motor in the parking mechanism is powered off, the parking state can still be simply and reliably maintained.

[0054] In some embodiments, Figure 1 , Figure 2 As shown, the end of the pawl 20 close to the ratchet 10 forms a terminal head 21 adapted to the ratchet teeth of the ratchet 10 .

[0055] That is, a terminal 21 matching the tooth surface of the ratchet 10 is provided at one end of the pawl 20 close to the ratchet 10 , so that when the pawl 20 abuts against the ratchet 10 , the ratchet 10 can be stably locked.

[0056] In some embodiments, the ratchet teeth on the ratchet wheel 10 are tilted in a clockwise or counterclockwise direction.

[0057] As an example, Figure 2 As shown, the ratchet teeth of the ratchet 10 in the figure are arranged to be tilted in the clockwise direction, and a pawl 20 is arranged on one side of the ratchet 10, and one end of the pawl 20 abuts against the ratchet 10 to prevent the ratchet 10 from continuing to rotate clockwise to achieve locking; when unlocking, on the one hand, the motor in the parking mechanism is driven to drive the ratchet 10 to rotate counterclockwise, and at the same time, on the other hand, the first drive component 40 drives one end of the pawl 20 to lift off the tooth surface of the ratchet 10.

[0058] Similarly, it can be understood that the ratchet teeth on the ratchet wheel 10 are arranged to be tilted in the counterclockwise direction, and no further elaboration is given here.

[0059] In some embodiments, a first groove (not shown) adapted to the first spring 30 is formed on the side of the pawl 20 close to the first spring 30 .

[0060] That is, a first groove for embedding the end of the first spring 30 is provided on the corresponding side surface of the pawl 20, so that the connection driving between the first spring 30 and the pawl 20 is more reliable.

[0061] In some embodiments, the first driving assembly 40 may include: a solenoid valve 41 and a push rod 43 .

[0062] The solenoid valve 41 is disposed on the other side of the pawl 20 along the length direction.

[0063] The push rod 43 is disposed between the electromagnetic valve 41 and the ratchet 20 , with one end of the push rod 43 connected to the electromagnetic valve 41 and the other end of the push rod 43 abutting against the ratchet 20 .

[0064] As an example, in the non-self-locking state, such as Figure 2 As shown, the push rod 43 is extended by the solenoid valve 41 to lift one end of the pawl 20 away from the surface of the ratchet 10. At this time, the motor in the parking mechanism drives the parking state. Figure 3 As shown, the solenoid valve 41 is not working, at which time the extended end of the push rod 43 is in the lowest position, the pawl 20 abuts against the push rod 43, and under the constraint of the first spring 30 on the other side, the end of the pawl 20 abuts against the surface of the ratchet 10 to achieve a self-locking state.

[0065] In some embodiments, a second groove (not shown) adapted to the end of the push rod 43 is formed on the side of the pawl 20 close to the push rod 43 .

[0066] That is to say, a second groove for embedding the end of the push rod 43 is provided on the corresponding side surface of the pawl 20, so that the connection drive between the push rod 43 and the pawl 20 is more stable and reliable.

[0067] In some embodiments, Figure 2 As shown, the first driving assembly 40 may further include: a second spring 44 and a limiting block 45 .

[0068] The second spring 44 is sleeved on the extended section of the push rod 43 .

[0069] One end of the push rod 43 close to the pawl 20 is detachably connected to the limit block 45 , so that one end of the second spring 44 abuts against the limit block 45 , and the other end abuts against the solenoid valve 41 .

[0070] That is to say, a second spring 44 is provided on the extended section of the push rod 43, and a limit block 45 is provided at the end of the push rod 43 to clamp the second spring 44 together with the outer shell of the solenoid valve 41. By providing the second spring 44, the push rod 43 can retract more smoothly when the solenoid valve 41 is powered off.

[0071] In other embodiments, Figure 4 As shown, the first driving assembly 40 may include: a first driving motor 42 and a push rod 43 .

[0072] The first driving motor 42 is disposed on the other side of the pawl 20 along the length direction.

[0073] The push rod 43 is disposed between the first driving motor 42 and the pawl 20 , with one end of the push rod 43 connected to the first driving motor 42 and the other end of the push rod 43 abutting against the pawl 20 .

[0074] In other words, the first driving assembly 40 can also use the first driving motor 42 to drive the extension and retraction of the push rod 43, which is simple and efficient.

[0075] In some embodiments, the ratchet self-locking mechanism further includes a housing (not shown).

[0076] The ratchet 10 , the pawl 20 , the first spring 30 and the first driving assembly 40 are installed inside the housing.

[0077] That is to say, by installing the ratchet 10, the pawl 20, the first spring 30 and the first driving assembly 40 in the housing respectively, on the one hand, it is convenient for assembly and production, and on the other hand, placing them in a fixed position in the housing can improve the driving stability of each component.

[0078] The brake according to the second embodiment of the utility model is described in detail below. Figure 5 As shown, it may include: a caliper body 50 , a brake assembly 60 , a second drive assembly 70 and a second drive motor 80 .

[0079] One end of the clamp body 50 is provided with a clamping groove.

[0080] The brake assembly 60 is disposed in the clamping groove.

[0081] The second driving assembly 70 is installed at the other end of the caliper body 50 , and the output end of the second driving assembly 70 is connected to the brake assembly 60 .

[0082] The output shaft of the second driving motor 80 is connected to the input end of the second driving assembly 70 .

[0083] The ratchet self-locking mechanism of any embodiment of the first aspect mentioned above, the ratchet 10 of the ratchet self-locking mechanism is connected to the output shaft of the second drive motor 80, and the ratchet self-locking mechanism is used to control the second drive component 70 to drive the brake component 60 to maintain the parking function when the second drive motor 80 stops working.

[0084] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A ratchet self-locking mechanism, characterized in that: include: ratchet; A pawl, the pawl being arranged on one side of the ratchet wheel and being rotatable around an end away from the ratchet wheel; A first spring, wherein the first spring is arranged at one side of the pawl along the length direction, and an end of the first spring close to the pawl abuts against the pawl, and an end of the first spring away from the pawl is fixed; a first driving assembly, the first driving assembly being arranged at the other side of the pawl along the length direction and abutting against the pawl, The first driving assembly and the first spring drive the pawl so that one end close to the ratchet wheel abuts against / moves away from the ratchet teeth of the ratchet wheel to achieve locking / unlocking.

2. The ratchet self-locking mechanism according to claim 1, characterized in that: One end of the pawl close to the ratchet wheel forms an end head adapted to the ratchet teeth of the ratchet wheel.

3. The ratchet self-locking mechanism according to claim 1, characterized in that: The ratchet teeth on the ratchet wheel are arranged to be inclined in a clockwise or counterclockwise direction.

4. The ratchet self-locking mechanism according to claim 1, characterized in that: A first groove matched with the first spring is formed on the side of the pawl close to the first spring.

5. The ratchet self-locking mechanism according to claim 1, characterized in that: The first driving assembly comprises: A solenoid valve, the solenoid valve being arranged on the other side of the pawl along the length direction; A push rod is arranged between the electromagnetic valve and the ratchet, one end of the push rod is connected to the electromagnetic valve, and the other end abuts against the ratchet.

6. The ratchet self-locking mechanism according to claim 5, characterized in that: A second groove matched with the end of the push rod is formed on the side of the pawl close to the push rod.

7. The ratchet self-locking mechanism according to claim 5, characterized in that: The first drive assembly also includes: a second spring, wherein the second spring is sleeved on the extending section of the push rod; A limit block, one end of the push rod close to the pawl is detachably connected to the limit block, so that one end of the second spring abuts against the limit block and the other end abuts against the solenoid valve.

8. The ratchet self-locking mechanism according to claim 1, characterized in that: The first driving assembly comprises: a first drive motor, the first drive motor being arranged at the other side of the pawl along the length direction; A push rod is disposed between the first driving motor and the ratchet, with one end of the push rod connected to the first driving motor and the other end abutting against the ratchet.

9. The ratchet self-locking mechanism according to claim 1, characterized in that: The ratchet self-locking mechanism also includes a housing, The ratchet, the pawl, the first spring and the first driving assembly are installed inside the housing.

10. A brake, characterized in that: include: A clamp body, one end of which is provided with a clamping groove; A brake assembly, the brake assembly being disposed in the clamping groove; A second drive assembly, the second drive assembly is mounted on the other end of the caliper body, and an output end of the second drive assembly is connected to the brake assembly; a second drive motor, wherein an output shaft of the second drive motor is connected to an input end of the second drive assembly; The ratchet self-locking mechanism described in any one of claims 1-9, wherein the ratchet of the ratchet self-locking mechanism is connected to the output shaft of the second drive motor, and the ratchet self-locking mechanism is used to control the second drive component to drive the brake component to maintain the parking function when the second drive motor stops working.

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