CN218367767U

CN218367767U - Support structure, locking mechanism and parking actuator

Info

Publication number: CN218367767U
Application number: CN202223010583.5U
Authority: CN
Inventors: 郭锋亮; 叶乙兴; 赵立成; 李运动; 许志; 朱元澄; 宣明
Original assignee: Wuhu Bethel Automotive Safety Systems Co Ltd
Current assignee: Wuhu Bethel Automotive Safety Systems Co Ltd
Priority date: 2022-11-12
Filing date: 2022-11-12
Publication date: 2023-01-24
Anticipated expiration: 2032-11-12

Abstract

The utility model discloses a supporting structure, locking mechanism and parking executor, its support is including the support body that is used for fixed parking locking mechanism interior spare part, be equipped with the hole mounting structure that is used for fixing a position the motor fixed part of locking motor and is used for fixing a position the installation gear shaft on the support body, this internal being equipped with of support is used for the spacing portion of worm to the spacing worm of worm axial, motor fixed part, hole mounting structure and the spacing portion of worm are an overall structure spare with the support body. The locking mechanism has the advantages that the parts are uniformly fixed through the support structure to form the modular structure unit, the part module integration is improved, the installation tolerance zone is reduced, the modular structure unit is assembled as a sub-assembly, the assembly is simple and convenient, the assembly efficiency of the assembly can be effectively improved, the structure is simple, and the cost is relatively low.

Description

Support structure, locking mechanism and parking actuator

Technical Field

The utility model belongs to the technical field of the vehicle parking technique and specifically relates to a supporting structure, locking mechanism and parking executor is related to.

Background

In the technical field of automobile braking, with the electric transformation of vehicles, a brake-by-wire system gradually becomes a great development trend of the automobile industry, and as one of the Electronic Mechanical Braking (EMB) systems, a form of direct driving of a wheel end motor is adopted, the torque and the rotary motion of the motor are transformed into the thrust and the translation motion of a connecting piece through a motion transformation mechanism, a braking piece is pushed to clamp a braking disc, and thus the braking force is obtained.

In an electromechanical braking system, a locking mechanism exists, such as a ratchet wheel scheme and an electromagnet scheme which are provided in the prior art, but the schemes only have a locking function on the braking system, and with the improvement of an intelligent driving technology, the intelligent driving grade is higher and higher, so that the automobile braking is required to have redundancy, and the residual force in the braking process needs to be released in time; however, in the prior art, the structure with various gear meshes is fixed, a gear box structure is usually adopted to fix the parts, a fixing structure for fixing each part needs to be arranged in the gear box, the structure in the gear box is complex, the occupied space is large, and the manufacturing cost is relatively high.

If the above-mentioned fixed assembly method is adopted, the following problems can be encountered when assembling various parts in the locking mechanism: (1) the multiple parts have multiple gear matching, position matching and the like, and the matching relationship between every two parts is not uniform, so that the tolerance band is not easy to calculate and control; (2) all the parts need to be fixed, so that different fixing structures are manufactured to realize the fixation when the structural module of the scheme is installed, and the design and the assembly are complex. (3) In the prior art, the gear box body structure is used for fixing related parts, the gear box structure is complex, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a supporting structure, locking mechanism and parking executor to it is unified fixed to reach the modularization, reduces the installation tolerance area, purpose with low costs.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts does:

the utility model provides a supporting structure, is including the support body that is used for fixed parking locking mechanism interior spare part, be equipped with the hole mounting structure who is used for fixing a position the motor fixed part of locking motor and is used for fixing a position the installation gear shaft on the support body, this internal being equipped with of support is used for the spacing portion of worm to the worm axial, motor fixed part, hole mounting structure and the spacing portion of worm are an overall structure spare with the support body.

And further:

the bracket body is of an integrated structure formed by stamping, bending or injection molding.

The whole body of the bracket body is of an unclosed structure.

The motor fixing part is a group of fixing parts which extend out of one side of the bracket body and are used for fixing the side face of the motor.

The support body comprises a bottom plate and a top plate which are arranged in parallel, the same side edges of the bottom plate and the top plate are connected through a connecting plate, the hole mounting structure comprises two corresponding shaft holes, and the two shaft holes are respectively arranged on the bottom plate and the top plate.

And the top plate is provided with a limit switch mounting hole for mounting a limit switch.

And a limiting boss used for limiting the sector gear on the gear shaft is arranged on the inner side of the top plate.

The worm limiting part is a pair of limiting plates which are arranged on the bottom plate or the top plate and used for limiting two ends of the worm, and the pair of limiting plates are positioned between the bottom plate and the top plate.

The motor support device is characterized in that L-shaped plates for supporting and positioning the motor extend out of the bottom plate and the connecting plate, positioning plates for positioning the motor extend out of the top plate, and a space for positioning the motor is formed between the L-shaped plates and the positioning plates.

The limiting boss is of a convex point or bending structure.

And the limiting plate is provided with a U-shaped groove or a round hole structure which is used for being matched with the end of the worm shaft.

The pair of limiting plates are oppositely arranged on the bottom plate or the top plate, and the edges of the bottom plate or the top plate are provided with groove corresponding to the limiting plates.

The utility model provides a locking mechanism, includes locking motor, worm wheel, worm, is used for the sector gear to parking executor drive shaft upper gear locking, and worm wheel and sector gear link to each other, and worm wheel and worm mesh mutually, still include locking mechanism, be equipped with the gear shaft on the hole mounting structure, worm wheel and sector gear all establish on the gear shaft, and it is fixed that locking motor passes through the motor fixed part, and the worm is established and is linked to each other with the axle of motor between the spacing portion of worm.

The parking actuator comprises a shell, a main motor and an upper end cover, wherein the main motor is arranged in the shell, the upper end cover is arranged on the shell, a motor shaft gear is arranged on a motor shaft of the main motor, the parking actuator also comprises a locking mechanism, a support body is fixed on the inner wall of the actuator shell through a gear shaft and/or a fastener, and a sector gear and the motor shaft gear are arranged correspondingly.

Compared with the prior art, the utility model, have following advantage:

this supporting structure, locking mechanism and parking executor structural design are reasonable, realize that spare part is unified fixed formation modularization constitutional unit through a supporting structure among the locking mechanism, have improved spare part module integration nature, have reduced the installation tolerance area, assemble as a sub-assembly with the module constitutional unit, and the assembly is simple and convenient, can effectively improve the assembly efficiency of final assembly to and simple structure, the cost is lower relatively.

Drawings

The following brief description of the drawings and reference numerals in the drawings forms a part of this specification:

fig. 1 is a schematic structural diagram of the actuator of the present invention.

Fig. 2 is the structural schematic diagram of the locking mechanism of the present invention.

Fig. 3 is a schematic view of the bracket structure of the present invention.

Fig. 4 is a schematic view of the bracket structure of the present invention.

In the figure:

1. an upper end cover; 2. locking the motor;

3. a support; 3a, a first fixed part; 3b, a second fixed part; 3c, a second fixed part; 3d, a first limiting part; 3e, a second limiting part; 3f, a first U-shaped groove; 3g, a second U-shaped groove; 3h, forming a first through hole; 3i, a second through hole; 3j, a limit switch mounting hole; 3k, limiting a boss;

4. a worm; 5. a worm gear; 6. a sector gear; 7. a limit switch; 8. a motor end cover; 9. a gear shaft; 10. a main motor; 11. an output gear; 12. a motor shaft gear; 13. an electronic component; 14. a spring; 15. and (7) a gasket.

Detailed Description

The following description of the embodiments of the present invention will explain the embodiments of the present invention in further detail by referring to the accompanying drawings.

As shown in fig. 1 to 4, the support structure of the parking actuator locking mechanism comprises a support body for fixing parts in the parking locking mechanism, a motor fixing part for positioning a locking motor and a hole mounting structure for positioning and mounting a gear shaft are arranged on the support body, a worm limiting part for axially limiting the worm 4 is arranged in the support body, and the motor fixing part, the hole mounting structure, the worm limiting part and the support body are an integral structural part.

The utility model discloses spare part is unified through a supporting structure and is fixed the modularization constitutional unit that forms among the well locking mechanism, has improved spare part module integrated nature, has reduced the installation tolerance area, assembles as a sub-assembly with the module constitutional unit, and the assembly is simple and convenient, can effectively improve the assembly efficiency of final assembly to and simple structure, the cost is lower relatively.

The whole bracket 3 is of an unclosed structure, so that each part can be conveniently installed; the bracket body is of an integrated structure formed by stamping, bending or injection molding, the forming is simple and convenient, and the cost is relatively low.

Preferably, the support body comprises a bottom plate and a top plate which are arranged in parallel, the same side edges of the bottom plate and the top plate are connected through connecting plates and are formed by bending metal plates, and the structural strength is high; the hole mounting structure comprises two corresponding shaft holes, the two shaft holes are respectively formed in the bottom plate and the top plate, namely a first through hole 3h formed in the bottom plate and a second through hole 3i formed in the top plate are located at two ends of the gear shaft through the upper shaft hole and the lower shaft hole, and the gear shaft penetrates through the whole locking mechanism to be integrated and fixed.

A limit switch mounting hole 3j for mounting a limit switch is formed in the top plate, and the limit switch 7 is directly fixed on the limit switch mounting hole; the inner side of the top plate is provided with a limit boss 3k for limiting the sector gear on the gear shaft; preferably, the limiting boss is of a convex point or bending structure; when the limiting boss is used for releasing the residual force, the limiting structure is matched to monitor the meshing position of the sector gear.

The motor fixing part is a group of fixing parts which extend out of one side of the bracket body and are used for fixing the side surface of the motor; preferably, L-shaped plates for supporting and positioning the motor extend out of the bottom plate and the connecting plate, a second fixing portion 3b and a third fixing portion 3c are formed on two surfaces of each L-shaped plate, a positioning plate for positioning the motor extends out of the top plate, the positioning plate forms a first fixing portion 3a, and a space for positioning the motor is formed between each L-shaped plate and the positioning plate; the locking motor 2 is fixed by three fixing surfaces.

The worm limiting part is a pair of limiting plates which are arranged on the bottom plate or the top plate and used for limiting the two ends of the worm, and the pair of limiting plates are positioned between the bottom plate and the top plate; specifically, the pair of limiting plates are respectively a first limiting portion 3d and a second limiting portion 3e, and the worm is axially limited by the two limiting plates.

Furthermore, the limiting plate is provided with a U-shaped groove or a circular hole structure which is used for being matched with the end of the worm shaft; the pair of limiting plates are oppositely arranged on the bottom plate or the top plate, the edges of the bottom plate or the top plate are provided with the groove corresponding to the limiting plates, and the groove is formed by stamping and bending, so that the manufacturing is simple and convenient.

Preferably, the limiting plate is provided with a U-shaped groove; the first limiting portion is provided with a first U-shaped groove 3f, the second limiting portion is provided with a second U-shaped groove 3g, the shaft end of the worm is located in the corresponding U-shaped groove, and the worm is convenient to install due to the open structure.

Because the worm is acted by tangential force in the operation process, the worm 4 has an axial impact force on the locking motor shaft, but the bracket has two limiting plates which can effectively limit the impact force and avoid the impact force from damaging the motor shaft with the brush; similarly, two U-shaped grooves on the support can limit the swing of the motor shaft and maintain the transmission stability of the worm and gear.

The bracket structure of the utility model can integrate a plurality of parts of the locking mechanism, realize the unified fixation of the parts and realize the modularization of a small assembly; meanwhile, all parts are fixed by the support, so that the tolerance zone can be optimized, and the accuracy of calculation and control of the tolerance zone is improved.

The utility model discloses parking executor locking mechanism, including casing and main motor 10 and upper end cover 1, main motor is established in the casing, and the upper end cover is established on the casing, is equipped with motor shaft gear on the motor shaft of main motor, and locking mechanism establishes between casing and upper end cover; the bracket body is fixed on the motor end cover 8 through a gear shaft and/or a fastener, and the sector gear and the motor shaft gear are arranged correspondingly.

The integrated sector gear 6 that is provided with locking motor, worm wheel 5, worm 4, is used for gear locking in the parking executor drive shaft on the support body, and worm wheel and sector gear link to each other, and worm wheel and worm mesh mutually, are equipped with gear shaft 9 on the hole mounting structure, and worm wheel and sector gear all establish on the gear shaft, and locking motor passes through the motor fixed part and fixes, and the worm is established and is linked to each other with the axle of motor between the spacing portion of worm.

Sector gear and motor shaft gear 12 are the parallel gear cooperation, and worm wheel are the worm gear cooperation, and motor shaft gear and motor shaft cooperation, spring, gasket, worm wheel and sector gear pass through the coaxial cooperation of gear shaft, and the locking motor passes through the motor shaft and cooperates with the worm gear structure to be equipped with electronic components 13 in the top of motor shaft gear, be equipped with output gear 11 on the motor shaft. Furthermore, the main motor adopts a brushless motor, and the locking motor adopts a brush motor, so that the cost is relatively low.

Through this support with locking motor, worm gear structure, sector gear, spring 14, gasket 15 and limit structure unify fixedly, be fixed in shells inner wall with this small assembly of structure through the gear shaft on, let this module assembly succinct, possess multiple advantage simultaneously, as follows: (1) the multifunctional device realizes multiple functions: the bracket can be used for fixing various parts at the same time and limiting the rotating gear; (2) simple structure, manufacturability is strong: the bracket has simple structure, uncomplicated manufacturing process and stronger manufacturability; (3) reducing the tolerance zone: various parts are fixed through the bracket, so that various part tolerance zones can be integrated, and the module tolerance zone is reduced; (4) the integration of the component module is improved: the scattered parts are integrated through the support to form a small assembly module, and the integration of the parts and the module is improved.

The implementation of the locking and residual force releasing structure is described with reference to fig. 1 and 2, and the following is detailed:

(1) and (3) locking process: when parking braking is carried out, the brush motor rotates forwards to drive the braking piece to clamp, when the braking piece is clamped, the brush motor completes clamping action, the motor stops rotating, the motor shaft gear also stops rotating at the moment, the shaft gear is ensured to be positioned at the collision point as a tooth groove part through the electronic control unit, then, the brush motor rotates to drive the sector gear to rotate, the sector gear is meshed with the shaft gear, the brush motor is powered off, and locking is completed under the action of the worm gear;

(2) and (3) locking and disconnecting: when the system needs to relieve the locking state, the brush motor rotates reversely at the moment to drive the sector gear to rotate reversely, the sector gear rotates out until the toothless part of the sector gear is meshed with the shaft gear, the sector gear and the shaft gear are in a decoupling state at the moment, the brush motor rotates reversely to drive the brake disc to clamp and release, and the locking disconnection and clamping release processes are completed.

(3) Process of releasing residual force: in the clamping process, the main motor is suddenly powered off, the brushless motor stops working, the shaft gear is static, and at the moment, the clamping force needs to be released as soon as possible to maintain the running state of the vehicle unaffected or slightly affected. After the brushless motor is suddenly powered off and stops working, the brush motor rotates reversely at the moment to drive the sector gear to rotate reversely, so that the shaft gear is driven to rotate reversely to drive the brake calipers to clamp and release; the release of the residual force is completed.

The above-mentioned is only for the description of the preferred embodiment of the present invention, and the above-mentioned technical features can be combined at will to form a plurality of embodiment schemes of the present invention.

The above description is for illustrative purposes only, and it is obvious that the present invention is not limited by the above embodiments, and various insubstantial improvements made by the concepts and technical solutions of the present invention or the direct application of the concepts and technical solutions of the present invention to other occasions without improvement are all within the scope of the present invention.

Claims

1. The utility model provides a supporting structure, includes the support body that is used for fixed spare part in the parking locking mechanism, its characterized in that: the support is characterized in that a motor fixing part for positioning the locking motor and a hole mounting structure for positioning and mounting the gear shaft are arranged on the support body, a worm limiting part for limiting the axial direction of the worm is arranged in the support body, and the motor fixing part, the hole mounting structure, the worm limiting part and the support body are an integral structural part.

2. The scaffold structure of claim 1, wherein: the bracket body is of an integrated structure formed by stamping, bending or injection molding.

3. The scaffold structure of claim 1, wherein: the whole body of the bracket body is of an unclosed structure.

4. The stent structure of claim 1 wherein: the motor fixing part is a group of fixing parts which extend out of one side of the bracket body and are used for fixing the side face of the motor.

5. The scaffold structure of claim 1, wherein: the support body comprises a bottom plate and a top plate which are arranged in parallel, the edges of the same side of the bottom plate and the same side of the top plate are connected through a connecting plate, the hole mounting structure comprises two corresponding shaft holes, and the two shaft holes are respectively arranged on the bottom plate and the top plate.

6. The support structure of claim 5, wherein: and the top plate is provided with a limit switch mounting hole for mounting a limit switch.

7. The stent structure of claim 5 wherein: and a limiting boss used for limiting the sector gear on the gear shaft is arranged on the inner side of the top plate.

8. The stent structure of claim 5 wherein: the worm limiting part is a pair of limiting plates which are arranged on the bottom plate or the top plate and used for limiting two ends of the worm, and the pair of limiting plates are positioned between the bottom plate and the top plate.

9. The stent structure of claim 5 wherein: the motor support device is characterized in that L-shaped plates for supporting and positioning the motor extend out of the bottom plate and the connecting plate, positioning plates for positioning the motor extend out of the top plate, and a space for positioning the motor is formed between the L-shaped plates and the positioning plates.

10. The support structure of claim 7, wherein: the limiting boss is of a convex point or bending structure.

11. The support structure of claim 8, wherein: and the limiting plate is provided with a U-shaped groove or a circular hole structure which is used for being matched with the end of the worm shaft.

12. The stent structure of claim 8 wherein: the pair of limiting plates are oppositely arranged on the bottom plate or the top plate, and the edges of the bottom plate or the top plate are provided with groove corresponding to the limiting plates.

13. The utility model provides a locking mechanism, includes locking motor, worm wheel, worm, is used for the sector gear to parking executor epaxial gear locking of drive, and worm wheel and sector gear link to each other, and worm wheel and worm mesh mutually, its characterized in that: the locking mechanism of any one of claims 1 to 12, wherein the hole mounting structure is provided with a gear shaft, the worm wheel and the sector gear are arranged on the gear shaft, the locking motor is fixed by a motor fixing part, and the worm is arranged between the worm limiting parts and connected with the shaft of the motor.

14. The utility model provides a parking executor, includes casing and main motor and upper end cover, main motor is established in the casing, and the upper end cover is established on the casing, is equipped with motor shaft gear on the motor shaft of main motor, its characterized in that: the locking mechanism of claim 13, further comprising a bracket body fixed to the inner wall of the actuator housing by a gear shaft and/or a fastener, wherein the sector gear is disposed in correspondence with the motor shaft gear.