Automobile brake locking mechanism

Abstract

The invention belongs to the technical field of automobile brake-by-wire, and discloses an automobile brake locking mechanism. The locking mechanism comprises a shell, a locking assembly, an elastic piece and an electromagnetic piece, the shell is provided with a mounting hole for containing the gear assembly, the locking assembly is arranged on the gear assembly in a sleeving mode, the locking assembly is provided with a locking position for locking the gear assembly and a releasing position for releasing the gear assembly, and the elastic piece is arranged on the locking assembly in a sleeving mode. The electromagnetic part is installed on the shell and can drive the locking assembly to move from the locking position to the releasing position when powered on. According to the automobile brake locking mechanism, the phenomenon of external force reverse driving can be prevented, and the reliability and safety during automobile braking are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive wire-controlled braking, and particularly to an automotive braking locking mechanism. Background Art

[0002] Currently, there are various automotive braking locking mechanisms. The most commonly used structure is the ratchet and pawl locking mechanism. The ratchet and pawl locking mechanism is simple. However, when the automotive braking locking mechanism is used when the vehicle exceeds the specified speed, the external force acting on the ratchet is too large at this time, and the risk of the pawl cracking will be greatly increased. After the pawl cracks, the entire locking mechanism will fail. Summary of the Invention

[0003] The purpose of the present invention is to provide an automotive braking locking mechanism, which can prevent the phenomenon of reverse driving by external force and improve the reliability and safety of the automotive braking locking mechanism.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] The present invention discloses a braking locking mechanism, including: a housing, the housing having a mounting hole; a spline tooth, the spline tooth passing through the mounting hole, and one end of the spline tooth protruding out of the housing being used to connect with the output shaft of a driving member; a locking assembly, the locking assembly sleeved on the spline tooth, the locking assembly having a locking position for locking the spline tooth and a release position for releasing the spline tooth; an elastic member, the elastic member sleeved on the locking assembly and used to apply a pre-tightening force towards the locking assembly to keep it in the locking position; an electromagnetic member, the electromagnetic member installed on the housing, and when the electromagnetic member is energized, it can drive the locking assembly to move from the locking position to the release position.

[0006] In some embodiments, the locking assembly includes: a pressing member, the pressing member sleeved on the spline tooth, the pressing member being able to move axially along the spline tooth under the attraction of the electromagnetic member; a clamping member, the clamping member sleeved on the spline tooth and spaced apart from the pressing member; a locking member, the locking member sleeved on the spline tooth and located between the pressing member and the clamping member, the locking member having a locking groove cooperating with the spline tooth; wherein, in the locking position, the locking member is pressed between the pressing member and the clamping member, and the locking member locks the spline tooth.

[0007] In some specific embodiments, both the clamping member and the locking member are multiple, and are arranged alternately along the axial direction of the spline tooth.

[0008] In some embodiments, the housing has a mounting cavity arranged around the mounting hole, and the mounting cavity has an opening, the electromagnetic component is installed in the mounting cavity, and the connecting terminal of the electromagnetic component extends out of the opening.

[0009] In some embodiments, the automobile brake locking mechanism further includes a limit member, which is installed in the mounting hole. The limit member has a limit portion extending toward the center of the mounting hole, and the limit portion is used to limit the elastic member.

[0010] In some specific embodiments, the limiting member also includes a first connecting portion extending in a direction away from the center of the mounting hole, and the outer shell is provided with a second connecting portion corresponding to the first connecting portion; wherein, one of the first connecting portion and the second connecting portion is provided with a clamping protrusion, and the other of the first connecting portion and the second connecting portion is provided with a clamping groove that cooperates with the clamping protrusion.

[0011] In some more specific embodiments, there are multiple limiting portions and multiple first connecting portions, and the multiple limiting portions and the multiple first connecting portions are staggered along the circumferential direction of the mounting hole.

[0012] In some embodiments, the automobile brake locking mechanism further comprises: a limit seat, the limit seat is sleeved on the spline teeth and abuts against the locking assembly, and the limit seat (16) is used to be connected to an external bracket.

[0013] In some specific embodiments, the automobile brake locking mechanism further includes: a limit column, which is clamped between the outer shell and the limit seat and passes through a portion of the locking assembly; and a fixing member, which passes through the outer shell, the limit column and the limit seat (16) to connect the outer shell, the limit column and the limit seat to fix the outer shell, the limit column and the limit seat.

[0014] In some embodiments, the housing and the electromagnetic component are connected by heat riveting.

[0015] Advantages of the present invention: During the actual working process, when the electromagnetic component is powered off, the elastic component presses the entire locking component downward with its elastic force. Due to the frictional force, the gear component cannot rotate within the locking component, so that the driving component cannot rotate to achieve the function of preventing external force reverse drive. When the electromagnetic component is powered on and off, the locking component is attracted upward by the magnetic force to the housing. The acting force of the locking component on the gear component decreases, and the frictional force disappears. At this time, the gear component can rotate freely to achieve unlocking and the free rotation of the driving component. Compared with the ratchet and ratchet tooth structure in the prior art, the automotive braking locking mechanism of this embodiment applies a pre-tightening force to the locking component by using an elastic component, and realizes the locking of the gear component by the way of being locked by frictional force, with high reliability and safety, and can better achieve the function of preventing external force reverse drive. By driving the locking component to move through the energization of the electromagnetic component to achieve the unlocking of the gear component, the control is convenient and the structure is simple.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the cooperation structure between the automotive braking locking mechanism and the driving component according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the structure of the automotive braking locking mechanism according to an embodiment of the present invention;

[0019] Figure 3 is a cross-sectional view of the automotive braking locking mechanism according to an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of the structure of the locking component according to an embodiment of the present invention.

[0021] Reference Signs:

[0022] 10. Automotive braking locking mechanism;

[0023] 11. Housing; 111. Mounting hole; 120. Mounting cavity; 1201. Opening; 112. Second connecting portion; 1121. Clamping projection;

[0024] 12. Locking component; 121. Pressing member; 122. Clamping member; 123. Locking member; 1231. Locking groove;

[0025] 13. Elastic component;

[0026] 14. Electromagnetic component; 141. Connection terminal;

[0027] 15. Limiting member; 151. Limiting portion; 152. First connecting portion; 1521. Card slot;

[0028] 16. Limit seat; 17. Limit post; 18. Fixing member;

[0029] 20. Driving member; 21. Driving shaft;

[0030] 30. Gear assembly; 31. Spline tooth; 32. Motor tooth. Detailed implementation manners

[0031] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0032] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0034] The present invention discloses an automotive braking locking mechanism 10. Refer to Figures 1 - 3As shown in the figure, the vehicle braking locking mechanism 10 of this embodiment includes a housing 11, a locking assembly 12, an elastic member 13, and an electromagnetic member 14. The housing 11 has a mounting hole 111 for accommodating a gear assembly 30 connected to a driving member 20. The locking assembly 12 is sleeved on the gear assembly 30. The locking assembly 12 has a locking position for locking the gear assembly 30 and a releasing position for releasing the gear assembly 30. The elastic member 13 is sleeved on the locking assembly 12 and is used to apply a pre-tightening force to the locking assembly 12 to keep it in the locking position. The electromagnetic member 14 is installed on the housing 11. When the electromagnetic member 14 is energized, it can drive the locking assembly 12 to move from the locking position to the releasing position. It can be understood that the gear assembly 30 includes spline teeth 31 and motor teeth 32. The motor teeth 32 are connected to the drive shaft 21 of the driving member 20. During actual operation, when the electromagnetic member 14 is de-energized, the elastic force of the elastic member 13 presses the entire locking assembly 12 downward. Due to the static friction force, the spline teeth 31 cannot rotate within the locking assembly 12, so that the motor teeth 32 and the driving member 20 will not rotate under the action of external forces, realizing the function of preventing reverse driving by external forces. When the electromagnetic member 14 is energized, the locking assembly 12 is attracted upward by the magnetic force to the housing 11. The acting force of the locking assembly 12 on the spline teeth 31 decreases, and the friction force disappears. At this time, the spline teeth 31 can rotate freely to achieve unlocking. At this time, the driving member 20 can rotate normally, driving the motor teeth 32 and the spline teeth 31 to move. Compared with the ratchet and pawl structure in the prior art, the vehicle braking locking mechanism 10 of this embodiment applies a pre-tightening force to the locking assembly 12 by the elastic member 13, and locks the gear assembly 30 by the way of friction locking, with high reliability and safety, and can better realize the function of preventing reverse driving by external forces. The electromagnetic member 14 is energized to drive the locking assembly 12 to move to unlock the gear assembly 30, with convenient control and simple structure.

[0035] It should be added that the vehicle braking locking mechanism 10 of this embodiment can be used not only when parking, but also when driving for locking and releasing.

[0036] Refer to Figure 3As shown, the locking assembly 12 includes a pressing member 121, a clamping member 122 and a locking member 123. The pressing member 121 is sleeved on the spline teeth 31 of the gear assembly 30. The pressing member 121 can move axially along the spline teeth 31 under the attraction of the electromagnetic member 14. The clamping member 122 is sleeved on the spline teeth 31 and is arranged at an interval from the pressing member 121. The locking member 123 is sleeved on the spline teeth 31 and is located between the pressing member 121 and the clamping member 122. The locking member 123 has a locking groove 1231 that cooperates with the spline teeth 31. Among them, in the locked position, the locking member 123 is pressed between the pressing member 121 and the clamping member 122, and the locking member 123 locks the spline teeth 31. It can be understood that during the actual working process, when the electromagnetic member 14 is powered off, the elastic force of the elastic member 13 presses the pressing member 121 downward, and the pressing member 121 can press the locking member 123 on the clamping member 122. At this time, the locking member 123 can achieve the function of locking the spline teeth 31. When the electromagnetic member 14 is powered on, the pressing member 121 is attracted upward by the magnetic force to the housing 11, and the pressure between it and the clamping member 122 becomes smaller, so that the static friction force of the locking member 123 acting on the spline teeth 31 disappears, and the spline teeth 31 can rotate freely at this time to achieve unlocking. Using the sequentially stacked pressing member 121, clamping member 122 and locking member 123 as the locking assembly 12 can simplify the structure of the locking assembly 12 while ensuring the stable locking of the spline teeth 31, so as to better achieve the function of preventing external force reverse drive.

[0037] Optionally, there are two clamping members 122 and three locking members 123, and they are arranged staggeredly along the axial direction of the spline teeth 31. It can be understood that setting the clamping member 122 and the locking member 123 into a multi-layer structure can increase the friction area, evenly disperse the pressure, reduce the wear and stress concentration of a single locking member 123, and thus extend the service life of the locking assembly 12. It should be added that in other embodiments of the present invention, the numbers of the clamping member 122 and the locking member 123 can be selected according to actual needs and are not limited to the above limitations.

[0038] Optionally, the pressing member 121, the clamping member 122 and the locking member 123 are all in sheet-like structures. It can be understood that selecting sheet-like structures for the pressing member 121, the clamping member 122 and the locking member 123 can simplify the structure of the entire locking assembly 12, reduce the thickness of the locking assembly 12, and is beneficial to reducing the manufacturing cost of the automotive braking locking mechanism 10 in this embodiment. It should be added that in the embodiments of the present invention, the pressing member 121 is made of a material that can be adsorbed by a magnet, such as iron or magnetic material, and the materials of the clamping member 122 and the locking member 123 can be selected according to specific needs.

[0039] Optionally, refer to Figure 4As shown, the locking member 123 is provided with a spline groove that mates with the spline teeth 31. The contact area between the spline groove and the spline teeth 31 is large, the force is evenly distributed, it can effectively prevent rotation, improve stability and wear resistance, and extend the service life of the locking assembly 12.

[0040] Reference Figure 3 As shown, the housing 11 has an installation cavity 120 provided around the installation hole 111, and the installation cavity 120 has an opening 1201. The electromagnetic member 14 is installed in the installation cavity 120, and the connection terminal 141 of the electromagnetic member 14 extends out of the opening 1201. It can be understood that by arranging the electromagnetic member 14 in the installation cavity 120, it can effectively prevent foreign objects from contaminating the inside of the electromagnetic member 14, and the connection terminal 141 of the electromagnetic member 14 extending out of the opening 1201 on the installation cavity 120 facilitates the connection between the electromagnetic member 14 and the control mechanism.

[0041] Optionally, the housing 11 and the electromagnetic member 14 are connected by a thermal riveting method. It can be understood that the housing 11 and the electromagnetic member 14 are hermetically and firmly connected by the thermal riveting method, effectively preventing foreign objects from contaminating the inside of the electromagnetic member 14, and is suitable for rapid large-scale production.

[0042] Reference Figure 3 As shown, the vehicle braking locking mechanism 10 further includes a limiting member 15. The limiting member 15 is installed in the installation hole 111, and the limiting member 15 has a limiting portion 151 extending toward the center of the installation hole 111. The limiting portion 151 is used to limit the elastic member 13. It can be understood that after the electromagnetic member 14 is energized, under the attraction of the electromagnetic member 14, the pressing member 121 will move upward and thus apply a force to the elastic member 13. The limiting member 15 can ensure that the elastic member 13 is stably compressed. When the electromagnetic member 14 is de-energized, the elastic member 13 can reset to the position where it presses the pressing member 121.

[0043] Optionally, the limiting member 15 further includes a first connecting portion 152 extending in a direction away from the center of the installation hole 111. The housing 11 is provided with a second connecting portion 112 corresponding to the first connecting portion 152. The second connecting portion 112 is provided with a clamping convex 1121, and the first connecting portion 152 is provided with a clamping groove 1521 that mates with the clamping convex 1121. It can be understood that during the actual assembly process, after the limiting member 15 is installed into the housing 11, the first connecting portion 152 is bent so that the clamping convex 1121 mates with the clamping groove 1521 to realize the installation of the limiting member 15 and the housing 11. This structure of bending and buckling for positioning does not require additional connecting parts, simplifies the assembly, and reduces the material and manufacturing costs.

[0044] Further, both the limiting portion 151 and the first connecting portion 152 are multiple, and the multiple limiting portions 151 and the multiple first connecting portions 152 are arranged staggeredly along the circumferential direction of the mounting hole 111. It can be understood that multiple limiting portions 151 can stably limit and compress the elastic member 13, and multiple first connecting portions 152 can improve the connection stability between the limiting member 15 and the housing 11. It should be noted that, in this embodiment, there are four limiting portions 151 and two first connecting portions 152. Of course, in other embodiments of the present invention, the numbers of the limiting portion 151 and the first connecting portion 152 can be selected according to actual needs, and are not limited to the above description.

[0045] Certainly, in an alternative embodiment, the second connecting portion 112 is provided with a card slot 1521, and the first connecting portion 152 is provided with a card projection 1121. In addition, in other embodiments of the present invention, the limiting member 15 can be directly connected to the housing 11 by means of bonding, welding, screw connection, etc., and is not limited to the structure of bending and snap-fitting positioning in this embodiment.

[0046] Reference Figure 2 and Figure 3 As shown, the vehicle braking locking mechanism 10 further includes a limiting seat 16. The limiting seat 16 is sleeved on the spline teeth 31, abuts against the locking assembly 12, and is used to connect with an external driving bracket. It can be understood that during the actual working process, when the electromagnetic member 14 is powered off, the elastic force of the elastic member 13 presses the entire pressing member 121 downward. During the downward movement of the pressing member 121, it can drive a plurality of clamping members 122 to press the locking member 123, and the pressure is finally transmitted to the limiting seat 16 to ensure that the entire locking assembly 12 can stably lock the spline teeth 31. Due to the static friction force, the spline teeth 31 cannot rotate within the locking assembly 12, realizing the function of preventing external force from reverse driving. In addition, the fixing holes and reference planes provided on the limiting seat 16 can simultaneously achieve the reliable assembly of the vehicle braking locking mechanism 10 and the external bracket (such as a driving seat) of the fixed driving member 20 in this embodiment.

[0047] Optionally, the vehicle braking locking mechanism 10 further includes a limit post 17 and a fixing member 18. The limit post 17 is clamped between the outer shell 11 and the limit seat 16 and passes through the pressing member 121 and the clamping member 122. The fixing member 18 passes through the outer shell 11, the limit post 17 and is connected to the limit seat 16 to fixedly connect the outer shell 11, the limit post 17 and the limit seat 16. It can be understood that the limit post 17 can play a role in guiding and restricting the pressing member 121 and the clamping, so as to ensure the locking effect and prevent the spline teeth 31 from driving the locking member 123 to rotate and deflect the clamping member 122 and / or the pressing member 121. The connection of the three structural members is realized by the fixing member 18 passing through the outer shell 11, the limit post 17 and the limit seat 16, which simplifies the connection structure and facilitates the assembly. In this embodiment, the mounting member is a rivet. In other embodiments of the present invention, the mounting member can also be other connectors such as screws.

[0048] Further optionally, both the limit post 17 and the fixing member 18 are multiple and are circumferentially spaced along the mounting hole 111. Thereby, the reliability of the structure and the assembly stability can be improved. In this embodiment, both the limit post 17 and the fixing member 18 are three. Of course, in other embodiments of the present invention, the limit post 17 and the fixing member 18 can also be selected according to actual needs.

[0049] Optionally, the pressing member 121 is provided with a through hole for the limit post 17 to pass through. It can be understood that the limit post 17 is arranged through the through hole, which can play a guiding role in the movement direction of the pressing member 121 and prevent the pressing member 121 from being skewed when the electromagnetic member 14 adsorbs the pressing member 121 and rises.

[0050] Optionally, the clamping member 122 is provided with a limit groove cooperating with the limit post 17. It can be understood that the clamping member 122 realizes the horizontal positioning through the limit groove and the limit post 17, and prevents the spline teeth 31 from driving the locking member 123 to rotate and deflect the clamping member 122.

[0051] In the description of this specification, the descriptions referring to the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A vehicle brake locking mechanism, characterized in that: include: A housing (11), wherein the housing (11) has a mounting hole (111) for accommodating a gear assembly (30) connected to a driving member (20); A locking assembly (12), wherein the locking assembly (12) is sleeved on the gear assembly (30), and the locking assembly (12) has a locking position for locking the gear assembly (30) and a releasing position for releasing the gear assembly (30); An elastic member (13), the elastic member (13) being sleeved on the locking assembly (12) and used for applying a pre-tightening force toward the locking assembly (12) to keep the locking assembly (12) in the locking position; An electromagnetic component (14) is mounted on the housing (11), and when energized, the electromagnetic component (14) can drive the locking assembly (12) to move from the locking position to the releasing position.

2. The automobile brake locking mechanism according to claim 1, characterized in that: The locking assembly (12) comprises: A pressing member (121), wherein the pressing member (121) is sleeved on the gear assembly (30), and the pressing member (121) can move along the axial direction of the gear assembly (30) under the attraction of the electromagnetic member (14); A clamping member (122), wherein the clamping member (122) is sleeved on the gear assembly (30) and spaced apart from the pressing member (121); A locking member (123), wherein the locking member (123) is sleeved on the gear assembly (30) and is located between the pressing member (121) and the clamping member (122), and the locking member (123) has a locking groove (1231) that cooperates with the gear assembly (30); wherein, In the locked position, the locking member (123) is pressed between the pressing member (121) and the clamping member (122), and the locking member (123) locks the gear assembly (30).

3. The brake locking mechanism according to claim 2, characterized in that: The clamping members (122) and the locking members (123) are both in plurality and are arranged in a staggered manner along the axial direction of the gear assembly (30).

4. The automobile brake locking mechanism according to claim 1, characterized in that: The housing (11) has a mounting cavity (120) arranged around the mounting hole (111), and the mounting cavity (120) has an opening (1201); the electromagnetic component (14) is installed in the mounting cavity (120), and the connecting terminal (141) of the electromagnetic component (14) extends out of the opening (1201).

5. The automobile brake locking mechanism according to claim 1, characterized in that: It also comprises a limiting member (15), the limiting member (15) being installed in the mounting hole (111), the limiting member (15) having a limiting portion (151) extending towards the center of the mounting hole (111), the limiting portion (151) being used to limit the elastic member (13).

6. The automobile brake locking mechanism according to claim 5, characterized in that: The limiting member (15) further comprises a first connecting portion (152) extending in a direction away from the center of the mounting hole (111), and the housing (11) is provided with a second connecting portion (112) corresponding to the first connecting portion (152); wherein one of the first connecting portion (152) and the second connecting portion (112) is provided with a latching protrusion (1121), and the other of the first connecting portion (152) and the second connecting portion (112) is provided with a latching groove (1521) cooperating with the latching protrusion (1121).

7. The automobile brake locking mechanism according to claim 6, characterized in that: There are a plurality of the limiting portions (151) and a plurality of the first connecting portions (152), and the plurality of the limiting portions (151) and the plurality of the first connecting portions (152) are staggeredly arranged along the circumferential direction of the mounting hole (111).

8. The automobile brake locking mechanism according to claim 1, characterized in that: Also includes: A limit seat (16), wherein the limit seat (16) is sleeved on the gear assembly (30) and abuts against the locking assembly (12), and the limit seat (16) is used to be connected to an external bracket.

9. The automobile brake locking mechanism according to claim 8, characterized in that: Also includes: A limiting column (17), wherein the limiting column (17) is sandwiched between the housing (11) and the limiting seat (16) and passes through a portion of the locking assembly (12); A fixing member (18), wherein the fixing member (18) passes through the outer shell (11), the limiting column (17) and is connected to the limiting seat (16) so as to fix the outer shell (11), the limiting column (17) and the limiting seat (16) in connection.

10. The automobile brake locking mechanism according to claim 1, characterized in that: The housing (11) and the electromagnetic component (14) are connected by heat riveting.

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