CN211501401U - Simple stay cable parking brake - Google Patents
Simple stay cable parking brake Download PDFInfo
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- CN211501401U CN211501401U CN201922228843.8U CN201922228843U CN211501401U CN 211501401 U CN211501401 U CN 211501401U CN 201922228843 U CN201922228843 U CN 201922228843U CN 211501401 U CN211501401 U CN 211501401U
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- bottom plate
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- pull arm
- boss
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Abstract
The utility model relates to a simple cable parking brake, which comprises a brake bottom plate, wherein arc brake shoes are symmetrically arranged on both sides of the front end surface of the brake bottom plate, a pull arm is arranged in the space between the brake bottom plate and one of the brake shoes, the top of the pull arm is rotationally connected with the brake shoe through a pin shaft, and a support plate is clamped between the pull arm and the other brake shoe; the bottom of the pull arm is hung with a pull cable assembly, the brake bottom plate bulges forwards to form a boss, and the brake bottom plate adjacent to the boss is provided with an inclined hole; the end part of the inhaul cable assembly extends to the back of the brake bottom plate through the guide of the lug boss and the inclined hole in sequence; a rotating shaft is arranged at the top end of the braking bottom plate positioned at the gap between the two braking shoes; the pull arm is pulled by the pull cable and is transmitted to the two brake shoes, and the brake shoes are opened towards two sides and are attached to the friction plate to realize braking; the utility model discloses a boss makes the single arm-drag only receive effectual pulling force, has improved mechanical transmission efficiency greatly, has prolonged stopper life to the structure of fulcrum department between cable assembly and braking bottom plate has been optimized.
Description
Technical Field
The utility model belongs to the technical field of the vehicle brake technique and specifically relates to a simple and easy cable parking brake.
Background
With the encouragement of national policies and the continuous breakthrough of new energy technologies, the market application of the electric-driven commercial vehicle is mature and favored by customers. Compared with the traditional fuel power, the new energy vehicle type directly arranges the driving motor at the power axle end or the wheel end so as to improve the transmission efficiency. Axle end or wheel end motors require more compact axle construction, especially axle end drives, requiring parking brakes to be deployed in the compact space of the motor and speed reducer.
The parking drum brake realizes mechanical parking by pulling a pull arm through a pull cable, the effective motion track of the pulled pull arm rotates around the plane of the end face of the brake, in the prior art, the pull cable mechanism is limited by the structure of the brake to extend out of the plane of the end face of the brake at a certain included angle, so that an included angle exists between the stress of the pull arm and the plane of the end face of the brake, namely, the pull arm is subjected to vertical component force besides effective plane rotating force, the mechanical transmission efficiency is greatly influenced, and the service life of the whole brake is also greatly influenced by the frequent ineffective axial component force of the pull arm.
In the prior art, a cable fixing point of a parking drum brake is fastened through a fixing support welded on a brake bottom plate so as to support a cable mechanism. The increase of the fixed support increases the space profile of the brake, is contrary to the compact requirement, and is not beneficial to the flexible layout of the parking brake.
SUMMERY OF THE UTILITY MODEL
The applicant provides a simple and easy cable parking brake rational in infrastructure to the shortcoming among the above-mentioned prior production technique to make the height of cable assembly match with the single arm-drag, make the single arm-drag only receive pivoted effective pulling force, improved mechanical transmission efficiency greatly, prolonged the stopper life-span, and this structural optimization is with low costs, and the effect is obvious.
The utility model discloses the technical scheme who adopts as follows:
a simple cable parking brake comprises a brake bottom plate, arc-shaped brake shoes are symmetrically arranged on two sides of the front end face of the brake bottom plate, a pull arm is arranged in a space between the brake bottom plate and one of the brake shoes, the top of the pull arm is rotatably connected with the brake shoe through a pin shaft, and a support plate is clamped between the pull arm and the other brake shoe; the bottom of the pull arm is hung with a cable assembly, a brake bottom plate positioned at the outer side of the bottom end of the pull arm bulges forwards to form a boss, and an inclined hole is formed in the brake bottom plate adjacent to the boss; one end of the stay cable assembly is connected with the pull arm in a hanging mode, and the other end of the stay cable assembly extends to the back of the brake bottom plate through the guide of the lug boss and the inclined hole in sequence; and a rotating shaft is arranged at the top end of the braking bottom plate positioned at the gap of the two braking shoes.
As a further improvement of the above technical solution:
the inhaul cable assembly is supported by the boss, so that the inhaul cable assembly between the boss and the pull arm is parallel to the brake bottom plate.
A groove is formed in the boss along the direction of the inhaul cable assembly, and the inhaul cable assembly is embedded in the groove; the groove is connected with the inclined hole.
The structure of cable assembly does: the pull rope fixing device comprises a fixed joint, a pull rope is arranged to penetrate through the fixed joint, a clamping sleeve with a square structure is arranged at the end of the pull rope, and the clamping sleeve is hung on a pull arm; the fixed joint extends into the inclined hole from the back of the brake bottom plate, and the fixed joint is fixedly installed with the brake bottom plate through a nut.
Two ends of the support plate are respectively provided with an inwards concave clamping groove; and a small spring is also arranged between the support plate and the pull arm.
The bottom end of the pull arm extends to form an outward clamping hook, and the clamping hook is clamped with the inhaul cable assembly.
And large springs are arranged between the two brake shoes and the rotating shaft.
The tops of the two brake shoes are provided with arc structures matched with the rotating shaft, and the brake shoes swing by taking the rotating shaft as a center.
And a reset spring and a self-adjusting ejector rod which are axially parallel to each other are arranged between the bottoms of the two brake shoes, and a ratchet wheel matched with the reset spring is arranged in the middle of the self-adjusting ejector rod.
The utility model has the advantages as follows:
the utility model has compact and reasonable structure and convenient operation, and the lug boss and the inclined hole are punched on the braking bottom plate, and the groove matched with the stay cable is arranged on the lug boss, so that the stay cable rotates at the center of the pin shaft only under the pulling force parallel to the plane of the front end surface of the braking bottom plate in the process of pulling the stay cable, thereby greatly improving the mechanical transmission efficiency and prolonging the service life; the inhaul cable assembly is fixedly connected with the inclined hole of the brake bottom plate through the fixed joint, a fixed support in the prior art is replaced, and the structure optimization of the brake is realized, so that the brake is matched with a new energy vehicle, and the parking brake is more flexibly and conveniently arranged in an effective space structure.
The utility model discloses still include following advantage:
the lug boss is provided with a groove along the direction of the inhaul cable assembly, and the groove plays a role in guiding in the inhaul cable pulling process;
the height of the boss is equivalent to that of the plane where the pull arm is located, so that the stay cable above the boss only applies effective braking tension to the pull arm;
the inclined hole is connected with the boss and the groove, so that the stay cable smoothly penetrates through the front end and the rear end of the brake bottom plate; the fixed joint on the inhaul cable is fixedly installed with the brake bottom plate through the nut, the disassembly and the maintenance are convenient, and the fixed joint becomes a fixed fulcrum of the outer end of the inhaul cable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along a-a in fig. 1.
Fig. 3 is an exploded view of fig. 1.
Fig. 4 is a partially enlarged view of a portion B in fig. 3.
Fig. 5 is a schematic structural view of the cable assembly of the present invention.
Wherein: 1. a rotating shaft; 2. a small spring; 3. a support plate; 4. a large spring; 5. braking the bottom plate; 6. braking a horseshoe; 7. a pin shaft; 8. pulling the arm; 9. a return spring; 10. a mandril is automatically adjusted; 11. a cable assembly; 12. a nut; 31. a card slot; 51. a boss; 52. a trench; 53. an inclined hole; 111. fixing the joint; 112. a cable; 113. a card sleeve; 81. a hook.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, 2 and 3, the simple cable parking brake of the present embodiment includes a brake base plate 5, arc-shaped brake shoes 6 are symmetrically arranged on two sides of a front end surface of the brake base plate 5, a pull arm 8 is installed in a space between the brake base plate 5 and one of the brake shoes 6, a top of the pull arm 8 is rotatably connected with the brake shoe 6 through a pin 7, and a support plate 3 is clamped between the pull arm 8 and the other brake shoe 6; the bottom of the pull arm 8 is hung with a cable assembly 11, the brake bottom plate 5 positioned outside the bottom end of the pull arm 8 bulges forwards to form a boss 51, and the brake bottom plate 5 adjacent to the boss 51 is provided with an inclined hole 53; one end of a guy cable assembly 11 is connected with the pull arm 8 in a hanging way, and the other end of the guy cable assembly 11 extends to the back of the brake bottom plate 5 through the guide of a boss 51 and an inclined hole 53 in sequence; the top end of the brake bottom plate 5 positioned at the gap of the two brake shoes 6 is provided with a rotating shaft 1.
The cable assembly 11 is supported by the boss 51, so that the cable assembly 11 between the boss 51 and the pull arm 8 is parallel to the brake base plate 5; in the process of pulling the pull arm 8 by the pull cable 112, the pull arm 8 only receives the pulling force parallel to the plane of the front end face of the brake bottom plate 5 so as to rotate around the center of the pin shaft 7, the mechanical transmission efficiency is greatly improved, and the service life is prolonged.
As shown in fig. 4, the boss 51 is provided with a groove 52 along the direction of the cable assembly 11, the cable 112 of the cable assembly 11 is embedded in the groove 52, and the groove 52 plays a guiding role in the pulling process of the cable 112; the groove 52 is engaged with the inclined hole 53, so that the cable 112 smoothly passes through the front and rear ends of the brake spider 5.
As shown in fig. 5, the structure of the cable assembly 11 is: the pull rod comprises a fixed joint 111, a pull cable 112 is installed through the fixed joint 111, a cutting sleeve 113 with a square structure is installed at the end of the pull cable 112, and the cutting sleeve 113 is hung on a clamping hook 81 of a pull arm 8; the fixed joint 111 extends into the inclined hole 53 from the back of the brake bottom plate 5, the fixed joint 111 is fixedly mounted with the brake bottom plate 5 through the nut 12, the assembly, disassembly and maintenance are convenient, the fixed joint 111 becomes a fixed fulcrum of the outer end of the inhaul cable 112, a fixed support in the prior art is replaced, the structural optimization of the brake is realized, and therefore the brake is matched with a new energy vehicle and is more flexibly and conveniently arranged in an effective space structure.
The two ends of the support plate 3 are respectively provided with an inwards concave clamping groove 31, and the clamping grooves 31 at the two ends are respectively clamped with the pull arm 8 and the right brake shoe 6; and a small spring 2 is also arranged between the support plate 3 and the pull arm 8, and the small spring 2 is used for resetting the rear pull arm 8.
The bottom end of the pull arm 8 extends to form an outward hook 81, and the hook 81 is clamped with a clamping sleeve 113 of the inhaul cable assembly 11.
The large springs 4 are arranged between the two brake shoes 6 and the rotating shaft 1, the brake shoes 6 on the two sides are opened towards the two sides by taking the rotating shaft 1 as a circle center during braking, and the large springs 4 are used for resetting the two brake shoes 6 after braking.
The tops of the two brake shoes 6 are provided with arc structures matched with the rotating shaft 1, and the brake shoes 6 swing by taking the rotating shaft 1 as a center.
A return spring 9 and a self-adjusting ejector rod 10 which are axially parallel are arranged between the bottoms of the two brake shoes 6, and a ratchet wheel matched with the return spring 9 is arranged in the middle of the self-adjusting ejector rod 10.
The utility model discloses a theory of operation does:
pulling the cable 112, the pulling arm 8 receives pulling force, and transmits the force to the right brake shoe 6 through the support plate 3, the brake shoe 6 opens outwards and fits with the friction plate, then the force is applied to the support plate 3 in a reverse direction, the support plate 3 applies the force to the pulling arm 8 and the left brake shoe 6, and the left brake shoe 6 rotates outwards relative to the pulling arm 8 by taking the pin shaft 7 as a circle center and opens, so that braking is realized.
The utility model discloses simple structure is ingenious, has realized the optimization of stopper structure, has improved the single arm-drag atress through the boss, and then has improved mechanical transmission efficiency and life.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (9)
1. The utility model provides a simple and easy cable parking brake, includes braking bottom plate (5), terminal surface bilateral symmetry has circular-arc brake shoe (6), its characterized in that before braking bottom plate (5): a pull arm (8) is arranged in a gap between the brake bottom plate (5) and one brake shoe (6), the top of the pull arm (8) is rotatably connected with the brake shoe (6) through a pin shaft (7), and a support plate (3) is clamped between the pull arm (8) and the other brake shoe (6); the bottom of the pull arm (8) is hung with a cable assembly (11), the brake bottom plate (5) positioned outside the bottom end of the pull arm (8) is bulged forwards to form a boss (51), and an inclined hole (53) is formed on the brake bottom plate (5) adjacent to the boss (51); one end of the inhaul cable assembly (11) is hung with the pull arm (8), and the other end of the inhaul cable assembly (11) extends to the back of the brake bottom plate (5) through the guide of the boss (51) and the inclined hole (53) in sequence; the rotating shaft (1) is arranged at the top end of the braking bottom plate (5) positioned at the gap of the two braking shoes (6).
2. The simple cable parking brake of claim 1, wherein: the cable assembly (11) is supported by the boss (51), so that the cable assembly (11) between the boss (51) and the pull arm (8) is parallel to the brake bottom plate (5).
3. The simple cable parking brake of claim 1 or 2, characterized in that: a groove (52) is formed in the boss (51) along the direction of the cable assembly (11), and the cable assembly (11) is embedded in the groove (52); the groove (52) is connected with the inclined hole (53).
4. The simple cable parking brake of claim 1 or 2, characterized in that: the structure of the inhaul cable assembly (11) is as follows: the pull rod comprises a fixed joint (111), wherein a pull cable (112) is installed through the fixed joint (111), a clamping sleeve (113) with a square structure is installed at the end of the pull cable (112), and the clamping sleeve (113) is hung on a pull arm (8); the fixed joint (111) extends into the inclined hole (53) from the back of the brake bottom plate (5), and the fixed joint (111) is fixedly mounted with the brake bottom plate (5) through a nut (12).
5. The simple cable parking brake of claim 1, wherein: two ends of the support plate (3) are respectively provided with an inwards concave clamping groove (31); and a small spring (2) is also arranged between the support plate (3) and the pull arm (8).
6. The simple cable parking brake of claim 1, wherein: the bottom end of the pull arm (8) extends to form an outward hook (81), and the hook (81) is clamped with the inhaul cable assembly (11).
7. The simple cable parking brake of claim 1, wherein: big springs (4) are arranged between the two brake shoes (6) and the rotating shaft (1).
8. The simple cable parking brake of claim 1, wherein: the tops of the two brake shoes (6) are provided with arc structures matched with the rotating shaft (1), and the brake shoes (6) swing by taking the rotating shaft (1) as a center.
9. The simple cable parking brake of claim 1, wherein: a reset spring (9) and a self-adjusting ejector rod (10) which are axially parallel to each other are arranged between the bottoms of the two brake shoes (6), and a ratchet wheel matched with the reset spring (9) is arranged in the middle of the self-adjusting ejector rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922228843.8U CN211501401U (en) | 2019-12-12 | 2019-12-12 | Simple stay cable parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922228843.8U CN211501401U (en) | 2019-12-12 | 2019-12-12 | Simple stay cable parking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211501401U true CN211501401U (en) | 2020-09-15 |
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ID=72415398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922228843.8U Active CN211501401U (en) | 2019-12-12 | 2019-12-12 | Simple stay cable parking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211501401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460171A (en) * | 2020-12-09 | 2021-03-09 | 湖北航天技术研究院特种车辆技术中心 | Drum-type parking brake assembly for electric wheel and electric wheel vehicle |
-
2019
- 2019-12-12 CN CN201922228843.8U patent/CN211501401U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460171A (en) * | 2020-12-09 | 2021-03-09 | 湖北航天技术研究院特种车辆技术中心 | Drum-type parking brake assembly for electric wheel and electric wheel vehicle |
| CN112460171B (en) * | 2020-12-09 | 2021-12-28 | 湖北航天技术研究院特种车辆技术中心 | Drum-type parking brake assembly for electric wheel and electric wheel vehicle |
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