CN203567709U - Handbrake unlocking structure - Google Patents
Handbrake unlocking structure Download PDFInfo
- Publication number
- CN203567709U CN203567709U CN201320758515.9U CN201320758515U CN203567709U CN 203567709 U CN203567709 U CN 203567709U CN 201320758515 U CN201320758515 U CN 201320758515U CN 203567709 U CN203567709 U CN 203567709U
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- CN
- China
- Prior art keywords
- push rod
- ratchet
- torsion spring
- control arm
- rivet
- Prior art date
- 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 - Lifetime
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- 238000001746 injection moulding Methods 0.000 claims abstract description 7
- 230000013011 mating Effects 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 10
- 229920003023 plastic Polymers 0.000 abstract description 7
- 239000004033 plastic Substances 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 210000000078 claw Anatomy 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Braking Elements And Transmission Devices (AREA)
Abstract
The utility model discloses a handbrake unlocking structure, which comprises a push rod, an operating arm and a button base, wherein the push rod is inserted into the operating arm; the button base and the push rod are molded integrally by injecting; a torsion spring, a ratchet and a toothed plate are further provided; a recess matched with the ratchet is formed at the tail end of the push rod; one end of the ratchet is arranged in the recess, and the other end of the ratchet is provided with locking teeth matched with the toothed plate; the torsion spring is clamped to the push rod and a scrabbling claw of the operating arm. A secondary injection molding of the metal push rod and the button base is changed into an integral plastic push rod, so that the defect of complex metal push rod molding process and incapability of ensuring the size accuracy are overcome, and the metal push rod is prevented from being rusted easily; meanwhile, secondary injection molding procedures are reduced, and the part cost is lowered; the friction noise between the plastic push rod and other metal parts is small, and gaps are controlled through radial limitation of a round tube of the operating arm and riveting of a second rivet, so that high stability and reliable strength are achieved; a compression spring is changed into the torsion spring, so that noise generated in the compressing and resetting processes of the compressing spring is reduced; meanwhile, low cost and reliable resetting are achieved.
Description
Technical field
The utility model relates to automobile parking brake equipment technical field, particularly relates to a kind of parking brake unlocking structure.
Background technology
At present, parking brake is an automotive system that Occupation coefficient is very high, and the result of use of parking brake directly affects the safety performance of vehicle operating.
Current parking brake is to adopt steel wire bracing wire to be connected on rear brake hub, so that car is braked, adopts Compress Spring in order to reset.Existing parking brake unlocking structure comprises push rod and control arm, and button is arranged at push rod front end.
Problems of the prior art are:
1, existing push rod is Metallic rod, and push-button socket is installed on push rod needs secondary injection molding, and cost of parts is high;
2, metal pushrod can produce larger noise with other metal parts collision frictions such as control arm in operational process, can not meet the requirement of product noise performance;
3, metal pushrod surface easily produces corrosion affects outward appearance;
4, using compression spring, is to rely on control arm pipe to increase the position that location guarantees spring, because assembling reason can cause crooked hair fastener after spring stress, sticks into handle after can causing button stressed and cannot reset; There is friction and produce larger noise with control arm simultaneously with compression and reseting procedure.
Therefore,, for existing problems of the prior art, need to adopt the technology of the parking brake unlocking structure that a kind of noise is little, cost is low particularly important.
Utility model content
The purpose of this utility model is to avoid weak point of the prior art and the parking brake that a kind of noise is little, cost is low unlocking structure is provided.
To achieve these goals, the present invention has taked following technical measures:
A kind of parking brake unlocking structure is provided, comprise push rod, control arm, push-button socket, described push rod is arranged in described control arm, described push-button socket and described push rod integrated injection molding, also be provided with torsion spring, ratchet and tooth plate, the end of described push rod is provided with the recess mating with ratchet, described ratchet one end is arranged at recess, the other end is provided with the lock tooth mating with tooth plate, described torsion spring is connected in the pawl that turns over of push rod and control arm, when in lockup state, the lock tooth of ratchet and tooth plate engagement, when in released state, the lock tooth of ratchet and tooth plate depart from, torsion spring is stressed, two arm angles of torsion spring diminish, when in reset mode, two arms of torsion spring open, the lock tooth of ratchet and tooth plate laminating.
Wherein, be provided with the first rivet, described ratchet is fixed on described control arm by the first rivet.
Wherein, the middle part of described the first rivet is provided with boss.
Wherein, be provided with the second rivet, the middle part of described push rod offers square hole, and described the second rivet is arranged in square hole, by push rod and control arm riveted joint.
Wherein, described recess is set to semi-circular hole.
Wherein, the front end of described push rod is provided with annular steps, annular steps and described control arm free-running fit.
The beneficial effects of the utility model:
A kind of parking brake unlocking structure, comprise push rod, control arm, push-button socket, described push rod is arranged in described control arm, described push-button socket and described push rod integrated injection molding, also be provided with torsion spring, ratchet and tooth plate, the end of described push rod is provided with the recess mating with ratchet, described ratchet one end is arranged at recess, the other end is provided with in the lock tooth of tooth plate coupling, described torsion spring is connected in the pawl that turns over of push rod and control arm, when in lockup state, the lock tooth of ratchet and tooth plate engagement, when in released state, the lock tooth of ratchet and tooth plate depart from, torsion spring is stressed, two arm angles of torsion spring diminish, when in reset mode, two arms of torsion spring open, the lock tooth of ratchet and tooth plate laminating.
The utility model is compared with parking brake unlocking structure of the prior art, metal pushrod and push-button socket secondary injection plastic are become to integrated plastic push rod, eliminated metal pushrod complex forming technology, the defect that dimensional accuracy cannot guarantee, avoided metal pushrod easily to produce corrosion, reduce quadric injection mould operation simultaneously, reduced cost of parts; Plastic push-rod and other metal parts friction noises are little, radially spacing and the first rivet control gap by control arm pipe, and good stability, intensity is reliable.Compress Spring is become to torsion spring, reduce the noise that Compress Spring produces in compression and reseting procedure, cost is low simultaneously, resets reliable.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but embodiment in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of parking brake unlocking structure of the present utility model.
Fig. 2 is the B-B cutaway view of Fig. 1 of the present utility model
Fig. 3 is the structural representation of the push rod of a kind of parking brake unlocking structure of the present utility model.
Fig. 4 is the structural representation of the first rivet of a kind of parking brake unlocking structure of the present utility model.
Fig. 5 is the structural representation of the lockup state of a kind of parking brake unlocking structure of the present utility model.
Fig. 6 is the structural representation of the released state of a kind of parking brake unlocking structure of the present utility model.
Fig. 7 is the structural representation of the reset mode of a kind of parking brake unlocking structure of the present utility model.
In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, include:
1-push rod, 2-annular steps, 3-control arm, the 4-the second rivet, 5-torsion spring, 6-ratchet, the 7-the first rivet, 8-square hole, 9-boss, 10-push-button socket, 11-tooth plate, 12-recess.
The specific embodiment
With the following Examples the utility model is described in further detail.
A kind of parking brake unlocking structure, as Fig. 1, Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6, comprise push rod 1, control arm 3, described push rod 1 is arranged in described control arm 3, described push rod 1 front end is provided with push-button socket 10, described push-button socket 10 and described push rod 1 integrated injection molding, also be provided with torsion spring 5, ratchet 6 and tooth plate 11, the end of described push rod 1 is provided with the recess 12 mating with ratchet 6, described ratchet 6 one end are arranged at recess 12, the other end is provided with in the lock tooth of tooth plate 11 couplings, described torsion spring 5 is connected in the pawl that turns over of push rod 1 and control arm 3, when in lockup state, the lock tooth of ratchet 6 and tooth plate 11 engagements, when in released state, the lock tooth of ratchet 6 and tooth plate 11 depart from, torsion spring 5 is stressed, two arm angles of torsion spring 5 diminish, when in reset mode, two arms of torsion spring 5 open, the lock tooth of ratchet 6 and tooth plate 11 laminatings.
The utility model is compared with parking brake unlocking structure of the prior art, push rod 1 and push-button socket 10 secondary injection plastics are become to integrated integrated plastic push rod 1, eliminated metal pushrod complex forming technology, the defect that dimensional accuracy cannot guarantee, avoided metal pushrod easily to produce corrosion, reduce quadric injection mould operation simultaneously, reduced cost of parts; One-body molded Hu push rod 1 is little with other metal parts friction noises, by torsion spring 5, has changed traditional Compress Spring, reset reliable, and noise is little, safe.
Button is installed on to push-button socket 10, completes control function.
As shown in Fig. 1, Fig. 3, Fig. 6, be provided with the second rivet 4, the middle part of described push rod 1 offers square hole 8, and described the second rivet 4 is arranged in square hole 8, by push rod 1 and control arm 3 riveted joints.
When the stressed edge of push rod 1 as shown in Figure 6 K to moving, move to the square hole 8 of push rod 1, the A face of square hole 8 contacts with the second rivet 4, and now push rod 1 operation stroke reaches maximum, and in whole service process, the second rivet 4 coordinates with the square hole 8 of push rod 1 and plays push rod 1 stroke limit effect;
As shown in Fig. 5, Fig. 6, Fig. 7, described recess 12 is set to semi-circular hole.Push rod 1 semi arch hole opening is less than ratchet 6 semi arch diameters and guarantees that in operational process, ratchet 6 does not depart from, and push rod 1 drives ratchet 6 around the ratchet little rivet rotation in 6 places, implementation structure release.
As shown in Figure 3, the front end of described push rod 1 is provided with annular steps 2, annular steps 2 and described control arm 3 free-running fits.
As shown in Figure 2, described push rod 1 is provided with annular steps 2 and is equipped with less gap with control arm 3 pipes, guarantees that push rod 1 control arm 3 pipes in along K as shown in Figure 6 to operational process are radially spacing to push rod 1; As Figure 1 and Figure 4, be provided with the first rivet 7, described ratchet 6 is fixed on described control arm 3 by the first rivet 7, and the middle part of described the first rivet 7 is provided with boss 9.Described push rod 1 is by the second rivet 4 and control arm 3 riveted joints, step by the second rivet 4 guarantees to leave certain interval between push rod 1 and control arm 3, on push rod 1 edge, K can not produce catching phenomenon with control arm 3 and cover plate friction in motion process as shown in Figure 6, is also playing position-limiting action perpendicular to control arm 3 directions simultaneously.
Principle of work:
Under initial condition, 5 liang of arms of torsion spring make ratchet 6 tooth plate 11 flank of tooth of fitting all the time along M to push rod 1 being applied to an initial tension, control arm 3 is pulled through in journey upper, ratchet 6 laminating tooth plates 11 are along with tooth plate 11 profiles of tooth are slided, and when unclamping control arm 3, ratchet 6 is realized latch functions (as Fig. 5 ratchet 6 and tooth plate 11 engagements) with tooth plate 11 engagements, when pressing the button 10 pairs of push rods 1 of seat along K to applied thrust, make push rod 1 along K to justifying in-pipes at control arm 3, when moving to push rod 1 square hole 8A face and contact with the second rivet 4, it is maximum that push rod 1 movement travel reaches, push rod 1 drives ratchet 6 to lift certain height and realizes unlocking function, now torsion spring 5 is compressed two arm angles and dwindles, to push rod 1 along M to applying a larger tension force (as shown in Figure 6), when maintenance drives control arm 3 to drop to initial position to push rod 1 application of force simultaneously, disappear to the K of push rod 1 to the application of force, now the M of 5 pairs of push rods 1 of torsion spring resets rapidly push rod 1 to larger tension force, drive ratchet 6 to reset simultaneously and fit to tooth plate 11 flank of tooth, now torsion spring 5 resets (as shown in Figure 7).
Finally should be noted that; above embodiment is the restriction in order to the technical solution of the utility model to be described but not to the utility model protection domain only; although the utility model is explained in detail with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. a parking brake unlocking structure, comprise push rod, control arm, push-button socket, described push rod is arranged in described control arm, it is characterized in that: described push-button socket and described push rod integrated injection molding, also be provided with torsion spring, ratchet and tooth plate, the end of described push rod is provided with the recess mating with ratchet, described ratchet one end is arranged at recess, the other end is provided with the lock tooth mating with tooth plate, described torsion spring is connected in the pawl that turns over of push rod and control arm, when in lockup state, the lock tooth of ratchet and tooth plate engagement, when in released state, the lock tooth of ratchet and tooth plate depart from, torsion spring is stressed, two arm angles of torsion spring diminish, when in reset mode, two arms of torsion spring open, the lock tooth of ratchet and tooth plate laminating.
2. a kind of parking brake unlocking structure according to claim 1, is characterized in that: be provided with the first rivet, described ratchet is fixed on described control arm by the first rivet.
3. a kind of parking brake unlocking structure according to claim 2, is characterized in that: the middle part of described the first rivet is provided with boss.
4. a kind of parking brake unlocking structure according to claim 1, is characterized in that: be provided with the second rivet, the middle part of described push rod offers square hole, and described the second rivet is arranged in square hole, by push rod and control arm riveted joint.
5. a kind of parking brake unlocking structure according to claim 1, is characterized in that: described recess is set to semi-circular hole.
6. a kind of parking brake unlocking structure according to claim 1, is characterized in that: the front end of described push rod is provided with annular steps, annular steps and described control arm free-running fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758515.9U CN203567709U (en) | 2013-11-26 | 2013-11-26 | Handbrake unlocking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758515.9U CN203567709U (en) | 2013-11-26 | 2013-11-26 | Handbrake unlocking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203567709U true CN203567709U (en) | 2014-04-30 |
Family
ID=50535457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320758515.9U Expired - Lifetime CN203567709U (en) | 2013-11-26 | 2013-11-26 | Handbrake unlocking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203567709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184154A (en) * | 2014-12-24 | 2016-12-07 | 根建满行 | The mounting structure of operation handle and lever shaft |
| 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 |
-
2013
- 2013-11-26 CN CN201320758515.9U patent/CN203567709U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184154A (en) * | 2014-12-24 | 2016-12-07 | 根建满行 | The mounting structure of operation handle and lever shaft |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |