CN201944250U - Improved parking braking device - Google Patents
Improved parking braking device Download PDFInfo
- Publication number
- CN201944250U CN201944250U CN2010203002241U CN201020300224U CN201944250U CN 201944250 U CN201944250 U CN 201944250U CN 2010203002241 U CN2010203002241 U CN 2010203002241U CN 201020300224 U CN201020300224 U CN 201020300224U CN 201944250 U CN201944250 U CN 201944250U
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- hinge
- ratchet
- parking
- hinged
- bearing
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- Braking Elements And Transmission Devices (AREA)
Abstract
The utility model discloses an improved parking braking device, a pawl mechanism is radially directly pushed to a tooth socket of a parking gear via a hinge linkage mechanism of a locking mechanism, and reaches function of parking braking, a new solution scheme is provided for a parking braking device arranged on a speed changer with relatively tight and compact axial space. Due to characteristics of the hinge linkage mechanism, when the locking mechanism in states of free bending and parking self-locking bending, the arc pawls are not made to slide out of the parking gear due to factors such as vibration, etc., guaranteeing braking reliability of an automobile in a parking or free state. The improved parking braking device provides a parking braking technical scheme advantaged by small volume, flexible installation, simple structure, and reliable safety for a speed changer with insufficient axial space.
Description
Technical field
The utility model patent relates to a kind of locking device for a vehicle, the improvement locking device for a vehicle in a kind of automatic gearbox of more specifically saying so.
Background technique
Automatic transmission generally all has forward gears, neutral gear, reverse gear and four gears of P shelves at least, compares with manual transmission, and the P shelves are gears that automatic transmission increases.The function of this gear is the braking when realizing parking of automobile.Parking braking is an indispensable covering device in the automatic transmission.
The locking device for a vehicle of automatic transmission must be realized following function:
1, under the push-and-pull of gear shift pulling cable, realizes function locked and releasing parking braking wheel;
2, when the gear shift push-pull cable keeps free state (do not push away also and do not draw), parking braking must strictly keep the state that unclamps, can not externally shake etc. under the influence of normal conditions spragging gear is locked;
3, when park pawl with the Parking gear lock after death, normally shake or have under the situation of movement tendency at automobile, also can keep locked state;
4, because the head of park pawl is square, certain width is arranged, it enters the Parking gear will be subjected to restriction on the angle.That is to say that when shift level was hung into the P shelves, park pawl was moved to Parking gear direction.But many times park pawl can not enter in the teeth groove of Parking gear just fully.In this case, guarantee that the P shelves can hang up, and when the Parking gear rotated an angle, park pawl can automatically enter the teeth groove of Parking gear rapidly, realize the locked of Parking gear.
The patent of invention that the applicant had not long ago just applied for, its name is called a kind of locking device for a vehicle, the bending by the control hinge with stretch, realize moving up and down of park pawl, make park pawl can axially enter and withdraw from the Parking gear.By a ratchet return spring, make park pawl in moving downward process, can not enter the realization that also can guarantee parking function under the situation of Parking gear just.By the auto-lock function of hinge, make park pawl hold mode firmly after entering the Parking gear, can not withdraw from automatically.Make park pawl can successfully withdraw from the Parking gear by promoting the Parking hinge left, realize the releasing of parking braking.
The patented technology scheme that above-mentioned the applicant not long ago applied for can reach the effect of parking braking and parking braking locking, but at the narrower speed changer of axial space, carry out the layout of locking device for a vehicle by such technological scheme, comparatively difficulty and the space that will certainly increase speed changer just seem.
The model utility content
The purpose of this utility model is to provide a kind of volume little, flexible for installation, simple in structure, safe and reliable improvement locking device for a vehicle for the speed changer of axial space deficiency.
In order to reach above purpose, the utility model is to be achieved through the following technical solutions: a kind of improvement locking device for a vehicle, constitute by transfer bar mechanism, lockable mechanism, detent mechanism and Parking gear, it is characterized in that described detent mechanism comprises arc ratchet, ratchet return spring and ratchet bearing; Arc ratchet one end and Parking gear upwards are separable engagement in the footpath of Parking gear; The other end is hinged on the ratchet bearing, and the ratchet bearing is located on the case of transmission, ratchet bearing and case of transmission one die cast; The ratchet return spring is located at the hinged place of arc ratchet and ratchet bearing; Described lockable mechanism is a linkage, and this mechanism has a free bent state and a self-locking bent state; Its upper end is hinged on the case of transmission, and the lower end is hinged on the outer arcuate face of arc ratchet; Described transfer bar mechanism is an extending means, and the one end is hinged on the lockable mechanism, and the other end links to each other with the shifting of transmission drag-line.
Utilize improvement locking device for a vehicle of the present utility model, make the articulated linkage mechanism of detent mechanism by lockable mechanism radially directly to push in the teeth groove of Parking gear, reach the function of parking braking, on the nervous compact speed changer of axial space, arranging that locking device for a vehicle provides a kind of new solution.Because the characteristic of articulated linkage mechanism, when lockable mechanism during, can the arc ratchet be skidded off from the Parking gear because of factors such as vibrations in free bent state and Parking self-locking bent state, guaranteed the braking reliability of automobile in Parking or free state.
Because the frequency of utilization of this device is higher in practical operation, the integral type of ratchet bearing and case of transmission one die cast design can guarantee the stability of locking device for a vehicle to greatest extent, and the life-span of use that can extension fixture.
As preferably, described lockable mechanism comprises upper hinge, hinge and rocker bar bearing down, and the upper hinge upper end is hinged on the rocker bar bearing, and rocker bar bearing is located on the case of transmission, rocker bar bearing and case of transmission one die cast; Following hinge upper end is hinged with upper hinge, and the lower end is hinged on the outer arcuate face of arc ratchet.
Because the characteristic of the articulated linkage mechanism of lockable mechanism, when parking locking mechanism during in free bent state and Parking self-locking bent state, can park pawl be skidded off from the Parking gear, guarantee the braking reliability of automobile in Parking or free state because of factors such as vibrations.Following hinge upper end is hinged with upper hinge, the lower end is hinged on the lug on the outer arcuate face of arc ratchet, hinge linkage promotes the arc ratchet and rotates around the ratchet bearing, makes that hinge linkage push rod dynamics is steady gently, has satisfied the comfort level of people's operating handles to greatest extent.
As preferably, the described upper end of hinge down is provided with position-limit mechanism.Described position-limit mechanism is the extended projection in following hinge side, and this projection is positioned at salient angle one side of lockable mechanism when the self-locking bending position.By this position-limit mechanism, when making lockable mechanism arrive self-locking bent state, be limited to the self-locking angle an of the best.
As preferably, described lockable mechanism is when the self-locking bending position, and the angle of its upper hinge and play hinge is 160 to 175 to spend.Make described parking locking mechanism have a best self-locking state.
As preferably, described transfer bar mechanism comprises pull bar, hinge, damping spring and Thrust nut; Pull bar one end end is provided with the link that is " U " shape, and it is hinged to the hinged place of upper hinge and following hinge by this link; The other end telescopic extension goes into to be the hinge inside of " U " shape; Pull bar is arranged with damping spring on the body of rod of hinge inside, and is fixed by Thrust nut.
By this Parking transfer bar mechanism of the present utility model, in the time of arc ratchet misalignment Parking gear tooth slot, the accumulation of energy of damping spring can guarantee that one in time is engaged with when the arc ratchet is aimed at the Parking gear tooth slot, guaranteed the reliability of parking braking.
Beneficial effect: (1) utilizes improvement locking device for a vehicle of the present utility model, make the articulated linkage mechanism of detent mechanism by lockable mechanism radially directly to push in the teeth groove of Parking gear, reach the function of parking braking, on the nervous compact speed changer of axial space, arranging that locking device for a vehicle provides a kind of new solution.Because the characteristic of articulated linkage mechanism, when lockable mechanism during, can the arc ratchet be skidded off from the Parking gear because of factors such as vibrations in free bent state and Parking self-locking bent state, guaranteed the braking reliability of automobile in Parking or free state.
(2) because the frequency of utilization of this device is higher in practical operation, the design of the integral type of ratchet bearing and case of transmission one die cast can guarantee the stability of locking device for a vehicle to greatest extent, and the life-span of use that can extension fixture.
(3) by this Parking transfer bar mechanism of the present utility model, in the time of arc ratchet misalignment Parking gear tooth slot, the accumulation of energy of damping spring can guarantee that one in time is engaged with when the arc ratchet is aimed at the Parking gear tooth slot, guaranteed the reliability of parking braking.
Description of drawings
Schematic representation when Fig. 1 enters the Parking gear fully for the utility model arc ratchet;
Fig. 2 is STRUCTURE DECOMPOSITION figure of the present utility model;
Schematic representation when Fig. 3 is in off working state for the utility model parking braking;
Schematic representation when Fig. 4 can not enter the Parking gear just fully for arc ratchet in the utility model Parking process.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing and specific embodiment.
Embodiment 1: as depicted in figs. 1 and 2, a kind of improvement locking device for a vehicle is made of transfer bar mechanism 1, lockable mechanism 2, detent mechanism 3 and Parking gear 4.
Detent mechanism 3 comprises arc ratchet 31, ratchet return spring 32 and ratchet bearing 33; With arc ratchet 31 1 ends be made as with Parking gear 4 gear rings in " yi word pattern " profile of tooth of meshing 311, should " yi word pattern " profile of tooth 311 upwards be separable engagement in the footpath of Parking gear 4 with Parking gear 4; The other end is hinged on the ratchet bearing 33, ratchet bearing 33 and case of transmission one die cast; Ratchet return spring 32 is located at the hinged place of arc ratchet 31 and ratchet bearing 33.
The upper end of following hinge 22 is provided with position-limit mechanism 221, and position-limit mechanism 221 is the extended projection in following hinge 22 sides, and this projection is positioned at salient angle one side of lockable mechanism 2 when the self-locking bending position.
Transfer bar mechanism 1 is that extending means links to each other with the shifting of transmission drag-line, and transfer bar mechanism 1 comprises pull bar 11, hinge 12, damping spring 13 and Thrust nut 14; Pull bar 11 1 end ends are provided with the link 111 that is " U " shape, and it is hinged to the hinged place of upper hinge 21 and following hinge 22 by this link 111; The other end telescopic extension goes into to be hinge 12 inside of " U " shape; Pull bar 11 is arranged with damping spring 13 on the body of rod of hinge 12 inside, and fixing by Thrust nut 14.
Embodiment 2: lockable mechanism 2 is when the self-locking bending position, and upper hinge 21 is 175 degree with the angle of following hinge 22.All the other are with embodiment 1.
Embodiment 3: in order to make arc ratchet 31 directly cooperate (Parking gear 4 be the part in the differential mechanism tooth belongs to typical tooth little) with Parking gear 4, so arc ratchet 31 1 ends are made as and the profile of tooth of differential mechanism gear ring engagement 311, curved and the tooth number of the flank of tooth of profile of tooth 311 is 3, this profile of tooth 311 directly and the Parking gears 4 of Parking be radially separable engagement.All the other are with embodiment 1.
In actual the use: as shown in Figure 3, when the shift level of speed changer during not at the P gear, the arc ratchet 31 of locking device for a vehicle is in the separated state with Parking gear 4, and be the off working state of locking device for a vehicle this moment.
When the shift level of speed changer was hung into the P shelves, the drag-line on the gearshift mechanism drew hinge 12 to the right.Have two kinds of situations to take place this moment: first kind, arc ratchet 31 is aimed at the teeth groove of Parking gear 4 just, and arc ratchet 31 successfully enters the teeth groove of Parking gear 4 fully, as shown in Figure 5; Second kind, arc ratchet 31 does not have to aim at just the teeth groove of Parking gear 4, and arc ratchet 31 can not successfully enter the teeth groove of Parking gear 4 fully, as shown in Figure 4.Locking device for a vehicle needs can both guarantee in both cases the realization of parking function.
Parking under first kind of situation is fairly simple, does not need special device just can realize this function.Under second kind of situation, parking braking just need utilize auxiliary its of a special device to finish parking function.Occur second kind of situation when Parking, so whole Parking process can be used Fig. 3, Fig. 4 and three state representation of Fig. 5.Fig. 3 state is a free state, when gear shift pulling cable draws hinge 12 to the right, hinge 12 by pull bar 11 with upper hinge 21, down hinge 22 pulls to straight configuration from bent state.When arc ratchet 31 moved downward the wheel toothed portion of running into Parking gear 4, arc ratchet 31 can not be rotated further again.At this moment, gear shift pulling cable still can continue to draw to the right, and the damping spring 13 between pull bar 11 and hinge 12 will be compressed.The automobile of this moment is not realized parking braking.The function of Thrust nut 14 is that damping spring 13 is fixed between pull bar 11 and the hinge 12.In case moving appears in automobile, Parking gear 4 will rotate, when arc ratchet 31 is just aimed at the teeth groove part of Parking gear 4, arc ratchet 31 can promptly overcome ratchet return spring 32 under being subjected to the elastic potential energy that damping spring 13 put aside elastic force enters in the teeth groove of the Parking gear 4 that is rotating, thereby realize the function of parking braking, as shown in Figure 5.
As shown in Figure 1, realize parking braking after, upper hinge 21 and following hinge 22 but present certain angle not on same straight line.This angle is exactly to be used for the function of real Parking self-locking.This angle is that a limit structure on the hinge 22 221 is realized under relying on.This structure is represented more clearly in the hinge 22 down in Fig. 2.
When gear shift pulling cable pushed away hinge 12 left, the left end of hinge 12 directly touched pull bar 11, and the self-lock force that will overcome hinge is shifted upper hinge 21, following hinge 22 onto bent state freely.
Aspect the assurance of Security, ratchet return spring 32 is torsion type spring, is to make arc ratchet 31 be kept away from the state of Parking gear 4 under its free state.In addition, when shift level was hung into any gear except that the P shelves, pull bar 11 all can be in made upper hinge 21, hinge 22 keeps crooked state down, even automobile is subjected to more serious vibration, arc ratchet 31 can not enter in the Parking gear 4 yet.Hang when entering Parking gear 4 fully into P shelves and arc ratchet 31 when shift level, hinge 22 is stuck in the Parking gear 4 arc ratchet 31 from the locking angle firmly up and down.Even automobile is subjected to more serious vibration, arc ratchet 31 can not withdrawed from Parking gear 4 yet.So this device has guaranteed that from structure it has higher safety coefficient.
Above-described only is preferred implementation of the present utility model; should be understood that; for present technique field those skilled in the art; under the prerequisite that does not break away from the utility model core technology feature; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. an improvement locking device for a vehicle is made of transfer bar mechanism, lockable mechanism, detent mechanism and Parking gear, it is characterized in that described detent mechanism (3) comprises arc ratchet (31), ratchet return spring (32) and ratchet bearing (33); Arc ratchet (31) one ends and Parking gear (4) upwards are separable engagement in the footpath of Parking gear (4); The other end is hinged on the ratchet bearing (33), and ratchet bearing (33) is located on the case of transmission, ratchet bearing (33) and case of transmission one die cast; Ratchet return spring (32) is located at the hinged place of arc ratchet (31) and ratchet bearing (33);
Described lockable mechanism (2) is a linkage, and this mechanism has a free bent state and a self-locking bent state; Its upper end is hinged on the case of transmission, and the lower end is hinged on the outer arcuate face of arc ratchet (31);
Described transfer bar mechanism (1) is an extending means, and the one end is hinged on the lockable mechanism (2), and the other end links to each other with the shifting of transmission drag-line.
2. improvement locking device for a vehicle according to claim 1, it is characterized in that, described lockable mechanism (2) comprises upper hinge (21), following hinge (22) and rocker bar bearing (23), upper hinge (21) upper end is hinged on the rocker bar bearing (23), rocker bar bearing (23) is located on the case of transmission, rocker bar bearing (23) and case of transmission one die cast; Following hinge (22) upper end is hinged with upper hinge (21), and the lower end is hinged on the outer arcuate face of arc ratchet (31).
3. improvement locking device for a vehicle according to claim 2 is characterized in that, the described upper end of hinge (22) down is provided with position-limit mechanism (221).
4. improvement locking device for a vehicle according to claim 3 is characterized in that, described position-limit mechanism (221) is the extended projection in following hinge (22) side, and this projection is positioned at salient angle one side of lockable mechanism (2) when the self-locking bending position.
5. according to claim 2 or 3 or 4 described improvement locking device for a vehicles, it is characterized in that lockable mechanism (2) is when the self-locking bending position, its upper hinge (21) is 160 to 175 degree with the angle of following hinge (22).
6. improvement locking device for a vehicle according to claim 2 is characterized in that, described transfer bar mechanism (1) comprises pull bar (11), hinge (12), damping spring (13) and Thrust nut (14); Pull bar (11) one end ends are provided with the link (111) that is " U " shape, and it is hinged to the hinged place of upper hinge (21) and following hinge (22) by this link (111); The other end telescopic extension goes into to be hinge (12) inside of " U " shape; Pull bar (11) is arranged with damping spring (13) on the inner body of rod of hinge (12), and fixing by Thrust nut (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203002241U CN201944250U (en) | 2010-01-07 | 2010-01-07 | Improved parking braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203002241U CN201944250U (en) | 2010-01-07 | 2010-01-07 | Improved parking braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201944250U true CN201944250U (en) | 2011-08-24 |
Family
ID=44471593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203002241U Expired - Fee Related CN201944250U (en) | 2010-01-07 | 2010-01-07 | Improved parking braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201944250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107107881A (en) * | 2015-01-07 | 2017-08-29 | 凯斯纽荷兰(中国)管理有限公司 | Radio system is locked in parking |
| CN111356865A (en) * | 2018-03-09 | 2020-06-30 | 舍弗勒技术股份两合公司 | Parking lock |
-
2010
- 2010-01-07 CN CN2010203002241U patent/CN201944250U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107107881A (en) * | 2015-01-07 | 2017-08-29 | 凯斯纽荷兰(中国)管理有限公司 | Radio system is locked in parking |
| CN111356865A (en) * | 2018-03-09 | 2020-06-30 | 舍弗勒技术股份两合公司 | Parking lock |
| CN111356865B (en) * | 2018-03-09 | 2021-08-24 | 舍弗勒技术股份两合公司 | Parking lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20180107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |