CN206885021U - A kind of parking brake error-unlocking prevention mechanism - Google Patents
A kind of parking brake error-unlocking prevention mechanism Download PDFInfo
- Publication number
- CN206885021U CN206885021U CN201720552322.6U CN201720552322U CN206885021U CN 206885021 U CN206885021 U CN 206885021U CN 201720552322 U CN201720552322 U CN 201720552322U CN 206885021 U CN206885021 U CN 206885021U
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- CN
- China
- Prior art keywords
- ratchet
- groove
- push rod
- parking brake
- prevention mechanism
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Braking Elements And Transmission Devices (AREA)
Abstract
The utility model discloses a kind of parking brake error-unlocking prevention mechanism, including push rod and control arm, the push rod is arranged in control arm, it is characterised in that：The push rod end is provided with groove, and the ratchet upper end is located in groove, and the recess width is more than ratchet upper end width, and the torsion spring is located in groove and ratchet upper end is closely against on groove rear wall, and the ratchet lower end sets lock tooth and tooth plate clamping.The utility model is simple in construction, easy to use, and accidental unlocking is prevented when push rod is by forward impact, while protects push rod to occur without the failures such as deformation fracture so that the reliability of parking is higher.
Description
Technical field
Auto parts and components are the utility model is related to, in particular to a kind of parking brake error-unlocking prevention mechanism.
Background technology
Parking brake belongs to parking braking system, typically when parking, is set up to prevent vehicle Sliding carriage with three wheels.It is existing
Parking brake unlocking structure include push rod and control arm, button is arranged at push rod front end.
The Chinese utility model patent of Application No. 201320758515.9 discloses a kind of parking brake unlocking structure, in push rod
End be provided with the recess matched with ratchet, ratchet one end is arranged at recess, and the other end is provided with the lock tooth matched with tooth plate,
What torsion spring was connected in push rod and control arm turns over pawl.But above-mentioned existing parking brake is after normal locking, if at unblock button by compared with
Big external impacts, then the possibility of accidental unlocking be present, car slipping can be caused, while may also result in the damage of unlocking mechanism.
Therefore, it is necessary to develop a kind of parking brake error-unlocking prevention mechanism simple in construction, reliability is high.
The content of the invention
The purpose of this utility model seeks to the deficiency for solving above-mentioned background technology, there is provided a kind of simple in construction, reliability
High parking brake error-unlocking prevention mechanism.
The technical solution of the utility model is：A kind of parking brake error-unlocking prevention mechanism, including push rod and control arm, the push rod
It is arranged in control arm, is provided with torsion spring, ratchet and tooth plate in the control arm, the ratchet is articulated with manipulation by the first rivet
On arm, offer square hole in the middle part of the push rod, the push rod by being arranged in the second rivet of square hole on control arm,
It is characterized in that：
The push rod end is provided with groove, and the ratchet upper end is located in groove, and the recess width is more than ratchet upper end
Width, the torsion spring are located in groove and ratchet upper end are closely against on groove rear wall, and the ratchet lower end sets lock tooth and tooth plate
Clamping.
Preferably, the groove is to include a pair of parallel setting antetheca, the polygon groove of rear wall.
Further, the torsion spring includes cylindrical body and the two-arm opened downwards, and the body is located above ratchet,
A torsion spring wherein arm is tight against groove antetheca, and another arm is tight against the preceding surface in ratchet upper end.
Further, surface is the plane coordinated with groove rear wall behind the ratchet upper end.
Further, the preceding surface in ratchet upper end is provided with projection and is connected with torsion spring.
The beneficial effects of the utility model are：
1. it is simple in construction, it is easy to use, accidental unlocking is prevented when push rod is by forward impact, while protect push rod to occur without
The failures such as deformation fracture so that the reliability of parking is higher.
2. when push rod is moved backward by thrust, but because the recess width of push rod end is more than ratchet upper end width, push away
Power can not be applied directly to ratchet, torsion spring can only be made to twist, and ratchet with tooth plate because engaging without moving, i.e., push rod occurs
Motion, but parking brake does not unlock, is locked so as to prevent from misreading, improves parking brake security.
Brief description of the drawings
Fig. 1 is the schematic diagram of the normal lockup state of parking brake error-unlocking prevention mechanism
Fig. 2 is the schematic diagram that parking brake error-unlocking prevention mechanism presses push rod state
Fig. 3 is the schematic diagram that parking brake error-unlocking prevention mechanism presses push rod and slight pull-up control arm
Wherein：1- push rod 2- control arm 3- torsion spring 4- ratchet 5- tooth plates 6- the first rivet the second rivets of 7- 8- side
Hole 9- groove 91- rear wall 92- antetheca 31- bodies 41- is raised.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, parking brake error-unlocking prevention mechanism provided by the utility model, including push rod 1 and control arm 2, push rod 1 are worn
In control arm 2, torsion spring 3, ratchet 4 and tooth plate 5 are provided with control arm 2, ratchet 4 is articulated with control arm by the first rivet 6
Upper 2, the middle part of push rod 1 offers square hole 8, and push rod 1 is riveted on control arm 2 by being arranged in the second rivet 7 of square hole 8, side
The width of hole 8 is more than the diameter of the second rivet 7, is connect when push rod 1 carries out moving to the front end face of square hole 8 in the direction of the arrow with the second rivet 7
Touch, the now operation of push rod 1 stroke reaches maximum, and the second rivet 7 coordinates the formation to push rod 1 with square hole 8 during whole service
Play position-limiting action, with arrow to for rear (dextrad in Fig. 1) in the present embodiment, arrow opposite direction be before (left-hand in Fig. 1).
The end of push rod 1 is provided with groove 9, and groove 9 is antetheca 92, the polygon groove of rear wall 91 for including a pair of parallel setting.
The upper end of ratchet 4 is located in groove 9, and 91 antetheca 92 of groove 9, rear wall width are more than the upper end width of ratchet 4, and torsion spring 3 is located at groove 9
Interior that the upper end of ratchet 4 is closely against on the rear wall 91 of groove 9, the lower end of ratchet 4 sets lock tooth and the clamping of tooth plate 5.Torsion spring 3 includes cylinder
Body 31 and the two-arm opened downwards, body 31 are located at the top of ratchet 4, and the wherein arm of torsion spring 3 is another tight against the antetheca 92 of groove 9
Arm is tight against the preceding surface in the upper end of ratchet 4.Be arranged such is that the motion of the body 31 of torsion spring 3 in groove 9 when promoting push rod 1 will not be to spine
The state of pawl 4 causes to interfere.Surface is the plane coordinated with the rear wall 91 of groove 9 behind the upper end of ratchet 4.The preceding surface in the upper end of ratchet 4 is provided with
Projection 41 is connected with torsion spring 3.
Operation principle of the present utility model is：
Fig. 1 is the normal lockup state of push rod, and ratchet 4 and tooth plate 5 are intermeshed, and torsion spring 3 has slight reverse to make the stress of ratchet 4
Abut on the rear wall 91 of the groove 9 of the end of push rod 1.
Arrow presses push rod 1 along Fig. 1, as shown in Fig. 2 push rod 1 is moved backward by thrust, but because the end of push rod 1
The width of groove 9 be more than the width of ratchet 4, thrust can not be applied directly to ratchet 4, torsion spring 3 can only be made to twist, ratchet 4 because
Engaged with tooth plate 7 without moving, i.e., push rod 1 moves, but parking brake does not unlock.
Fig. 3 is to press push rod and slight pull-up control arm state, tooth plate 7 are not influenceed transfixion, spine by pull-up operation
The engagement force of pawl 4 and tooth plate 7 is released, and caused twisting resistance promotes ratchet 4 to occur to turn around the first rivet 6 to torsion spring 3 in fig. 2
It is dynamic, the engagement releasing of ratchet 4 and tooth plate 7, that is, complete unblock.
Claims (5)
1. a kind of parking brake error-unlocking prevention mechanism, including push rod (1) and control arm (2), the push rod (1) are arranged in control arm (2)
It is interior, torsion spring (3), ratchet (4) and tooth plate (5) are provided with the control arm (2), the ratchet (4) is be hinged by the first rivet (6)
In on control arm (2), offering square hole (8) in the middle part of the push rod (1), the push rod (1) is by being arranged in the of square hole (8)
Two rivets (7) are riveted on control arm (2), it is characterised in that：
Push rod (1) end is provided with groove (9), and ratchet (4) upper end is located in groove (9), and groove (9) width is big
In ratchet (4) upper end width, the torsion spring (3) is located in groove (9) and ratchet (4) upper end is closely against on groove (9) rear wall, institute
State ratchet (4) lower end and lock tooth and tooth plate (5) clamping are set.
2. parking brake error-unlocking prevention mechanism as claimed in claim 1, it is characterised in that：The groove (9) be include it is a pair of parallel
Antetheca (92), the polygon groove of rear wall (91) are set.
3. parking brake error-unlocking prevention mechanism as claimed in claim 2, it is characterised in that：The torsion spring (3) includes cylindrical body
(31) two-arm and downwards opened, the body (31) are located above ratchet (4), and torsion spring (3) wherein arm is tight against groove
(9) antetheca (92), another arm is tight against ratchet (4) the preceding surface in upper end.
4. parking brake error-unlocking prevention mechanism as claimed in claim 3, it is characterised in that：Behind ratchet (4) upper end surface be with
The plane that groove (9) rear wall (91) coordinates.
5. parking brake error-unlocking prevention mechanism as claimed in claim 3, it is characterised in that：The preceding surface in ratchet (4) upper end is provided with
Raised (41) are connected with torsion spring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720552322.6U CN206885021U (en) | 2017-05-18 | 2017-05-18 | A kind of parking brake error-unlocking prevention mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720552322.6U CN206885021U (en) | 2017-05-18 | 2017-05-18 | A kind of parking brake error-unlocking prevention mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206885021U true CN206885021U (en) | 2018-01-16 |
Family
ID=61342128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720552322.6U Expired - Fee Related CN206885021U (en) | 2017-05-18 | 2017-05-18 | A kind of parking brake error-unlocking prevention mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206885021U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973957A (en) * | 2018-05-18 | 2018-12-11 | 宁波翼宇汽车零部件有限公司 | A kind of safe parking brake push rod device |
| CN109779742A (en) * | 2019-03-21 | 2019-05-21 | 东风汽车集团有限公司 | A kind of failure monitor system and method for engine charge electronics relief valve |
-
2017
- 2017-05-18 CN CN201720552322.6U patent/CN206885021U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973957A (en) * | 2018-05-18 | 2018-12-11 | 宁波翼宇汽车零部件有限公司 | A kind of safe parking brake push rod device |
| CN109779742A (en) * | 2019-03-21 | 2019-05-21 | 东风汽车集团有限公司 | A kind of failure monitor system and method for engine charge electronics relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430056 No. 1 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Hubei, Wuhan Patentee after: DONGFENG MOTOR Corp. Address before: 430056 No. 1 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Hubei, Wuhan Patentee before: Dongfeng Motor Corporation |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 |