CN107264506A - Vehicle electronic halting mechanism - Google Patents
Vehicle electronic halting mechanism Download PDFInfo
- Publication number
- CN107264506A CN107264506A CN201710498802.3A CN201710498802A CN107264506A CN 107264506 A CN107264506 A CN 107264506A CN 201710498802 A CN201710498802 A CN 201710498802A CN 107264506 A CN107264506 A CN 107264506A
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- China
- Prior art keywords
- ratchet
- parking
- pressing plate
- cam
- vehicle electronic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to vehicle parking field, more particularly to a kind of electronic parking mechanism.A kind of vehicle electronic halting mechanism, the ratchet being engaged including ratchet and with ratchet, the back side of the ratchet is provided with the parking cam that ratchet is pressed into ratchet, the parking cam is furnished with cam spring, the ratchet is furnished with return spring, the electronic parking mechanism also includes spacing pressing plate, and the two ends of the spacing pressing plate are sleeved on the pawl axis of the camshaft of parking cam and ratchet by mounting hole respectively, and the free degree that ratchet is moved axially along pawl axis is limited by spacing pressing plate.Vehicle electronic halting mechanism of the present invention limits the axial runout of ratchet using pressing plate, avoid in steep gradient parking, impact of the unlocking motion to reducer shell, and strengthen ratchet relevant position by rationally designing part, improve the intensity and endurance quality of EPP mechanical mechanisms, the situation of the parts such as ratchet, ratchet, reducer shell and parking spring failure is avoided, the security of vehicle is improved.
Description
Technical field
The present invention relates to vehicle parking field, more particularly to a kind of electronic parking mechanism.
Background technology
EPP be Electric Parking Pawl abbreviation, Chinese entitled electronic parking detent mechanism, including installed in
Vehicle wheel rotation shaft gear, ratchet and parking cam on reducer shell, the parking cam are furnished with cam spring, the ratchet
Equipped with return spring；Parking：Parking cam rotation is driven by small machine inside EPP, parking cam turns ratchet jacking wheel
The clearance between gear teeth of moving axis gear, realizes parking, such as runs into ratchet and just withstands on gear teeth tooth top, then ratchet reacts on cam, convex
Take turns spring compressed, cam angle degree keeps constant, waits rotary shaft pinion rotation, and ratchet waits for an opportunity to stick into clearance between gear teeth, and realization is stayed
Car.Unblock：Certain angle is rotated backward by motor, cam is returned to initial position, ratchet is exited under return spring effect
Clearance between gear teeth, realizes unblock；
This halting mechanism relies solely on return spring in unblock and provides restoring force, when in ramp parking, because of vehicle wheel rotation
Shaft gear is caused that the active force between ratchet and pawl is very strong by larger moment of torsion, in releasing process, whole halting mechanism by
Power is all very big, noise in the failure of parking camber of spring, ratchet fracture, reducer shell cracking, releasing process easily occurs higher
And vehicle shake it is violent the problems such as.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of vehicle electronic halting mechanism, and the halting mechanism utilizes pressure
Plate limits the axial runout of ratchet, it is to avoid in steep gradient parking, impact of the unlocking motion to reducer shell, and passes through and close
Reason design is local to strengthen ratchet relevant position, improve the intensity and endurance quality of EPP mechanical mechanisms, it is to avoid ratchet, spine
The situation of the parts such as pawl, reducer shell and parking spring failure, improves the security of vehicle.
What the present invention was realized in：A kind of vehicle electronic halting mechanism, including ratchet and the spine that is engaged with ratchet
Pawl, the back side of the ratchet is provided with the parking cam that ratchet is pressed into ratchet, and the parking cam is furnished with cam spring, described
Ratchet is furnished with return spring, and the electronic parking mechanism also includes spacing pressing plate, and the two ends of the spacing pressing plate are respectively by installing
Borehole jack limits ratchet on the camshaft of parking cam and the pawl axis of ratchet, by spacing pressing plate and moved axially along pawl axis
The free degree.
One end on the spacing pressing plate close to camshaft is provided with a spacing block set, the top of the spacing block set and ratchet
Face is engaged.
The back side of described ratchet is additionally provided with wear-resisting projection, and ratchet is pressed into spine by the parking cam by wear-resisting projection
Wheel.
The head of the ratchet is provided with one to the region of contact with the ratchet gear teeth and thickens boss.
An annular lightening grooves are offered on the both sides end face of the ratchet, the width h of the annular lightening grooves is in ratchet
The 1/3 ~ 1/2 of arbor hole radius r, the inner ring of annular lightening grooves is annular lightening grooves with the spacing h2 of ratchet central shaft hole inwall
The 1/3 ~ 1/2 of width h1.
The first reinforced hole is further opened with the spacing pressing plate.
On the spacing pressing plate reinforcement extension, the end of the reinforcement extension are additionally provided with positioned at one end of pawl axis
Offer the second reinforced hole.
Described cam spring is ring spring.
Vehicle electronic halting mechanism of the present invention limits the axial runout of ratchet using pressing plate, it is to avoid in steep gradient parking
When, impact of the unlocking motion to reducer shell, and ratchet relevant position is strengthened by rationally designing part, improve EPP
The intensity and endurance quality of mechanical mechanism, it is to avoid the feelings of the parts failure such as ratchet, ratchet, reducer shell and parking spring
Condition, improves the security of vehicle.
Brief description of the drawings
Fig. 1 is the structural representation of vehicle electronic halting mechanism of the present invention；
Fig. 2 is the structural representation of spacing pressing plate in the present invention；
Fig. 3 is the structural representation of ratchet in the present invention；
Fig. 4 is the structural representation of ratchet in the present invention.
In figure：1 ratchet, 2 ratchets, 3 parking cams, 4 cam springs, 5 return springs, 6 spacing pressing plates, 11 annular losss of weight
Groove, 21 pawl axis, 22 it is wear-resisting it is raised, 23 thicken boss, 31 camshafts, 61 mounting holes, 62 spacing block sets, 63 first reinforced holes,
64 strengthen extension, 65 second reinforced holes.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention stated has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiment 1
Such as Fig. 1, a kind of vehicle electronic halting mechanism, including ratchet 1 on reducer shell and be engaged with ratchet 1
Ratchet 2, the back side of the ratchet 2 is provided with the parking cam 3 that ratchet 2 is pressed into ratchet 1, and the parking cam 3 is equipped with convex
Spring 4 is taken turns, the ratchet 2 is furnished with return spring 5, and the electronic parking mechanism also includes spacing pressing plate 6, the spacing pressing plate 6
Two ends are sleeved on the camshaft 31 of parking cam 3 with the pawl axis 21 of ratchet 2, passing through spacing pressing plate by mounting hole 61 respectively
The free degree that 6 limitation ratchets 2 are moved axially along pawl axis 21；The running precision of ratchet 2 can effectively be improved by spacing pressing plate 6,
Avoid that moderate finite deformation occurs due to mechanical shock, influence the life-span, moreover it is possible to avoid reducer shell from ftractureing, it is ensured that vehicle safety；
In the present embodiment, preferably, described cam spring 4 is ring spring to increase the service life of cam spring 4.
As shown in Fig. 2 in actual use, the head of ratchet 2 is carried due to being come from the pressure of ratchet 1 and tangential force
The clockwise torque effect of confession, instantaneously completes unlocking motion, unlocked time is about 700ms.In the case of worst, the wink
Between ratchet 2 be subjected to mechanical shock operating mode more than 200g acceleration；Therefore in order to avoid the head of ratchet 2 bends bullet
Jump, in the present embodiment, one end on the spacing pressing plate 6 close to camshaft 31 is provided with a spacing block set 62, described spacing
Projection 62 is engaged with the top surface of ratchet 2, and the header area of ratchet 2 is pushed down when the top curved of ratchet 2 is bounced by spacing block set 62
The top surface in domain；
Further, since ratchet 2 can produce larger impact to spacing pressing plate 6 in the extreme circumstances, it is simple by a pair of mounting holes
61 possibly can not realize the fixation to spacing pressing plate 6, in the present embodiment, the first reinforcement is further opened with the spacing pressing plate 6
Hole 63；Reinforcement extension 64 is additionally provided with positioned at one end of pawl axis 21 on the spacing pressing plate 6, the reinforcement extension 64
End offers the second reinforced hole 65, and strengthening stud is fixed spacing pressing plate 6 using the first reinforced hole 63 and the second reinforced hole 65
On reducer shell, to meet the force request in real work.
As shown in figure 3, because in use, the back of ratchet 2 high-frequency can be rubbed repeatedly by parking cam 3
Wipe；In order to ensure the shape line durability in this region, it is to avoid because of the intensity on abrasion reduction ratchet 2 head, the back side of described ratchet 2
Wear-resisting raised 22 are additionally provided with, ratchet 2 is pressed into ratchet 1 by the parking cam 3 by wear-resisting raised 22；Meanwhile, the ratchet 2
Head and the gear teeth of ratchet 1 region of contact be provided with one thicken boss 23, the intensity on increase ratchet 2 head.
In the present invention, as shown in figure 4, offering an annular lightening grooves 11, the ring on the both sides end face of the ratchet 1
The width h1 of shape lightening grooves 11 is the 1/3 ~ 1/2 of the central shaft hole radius r of ratchet 1, inner ring and the center of ratchet 1 of annular lightening grooves 11
The spacing h2 of shaft hole inner wall is the 1/3 ~ 1/2 of the width h1 of annular lightening grooves 11；Can be effective after annular lightening grooves 11 are provided with
Reduction ratchet 1 quality and rotary inertia, improve noise and vibration of the ratchet 1 in rotation process, so as to optimize decelerator
The NVH performances of assembly.
Parking process：The rotating shaft 31 for driving parking cam 3 by EPP motors rotates 65 ° so that rotating shaft 31 is by convex
Wheel spring 4 drives parking cam 3 to rotate to relevant position, in the teeth groove that the tooth top of ratchet 2 is pressed into ratchet 1, realizes that parking is moved
Make.If the tooth top for running into ratchet 2 is withstood on the tooth top of ratchet 1 just, ratchet 2 reacts on parking cam 3, cam spring
4 is compressed, and the angle of parking cam 3 keeps constant.When ratchet 1 turns to next gear teeth, the energy stored by cam spring 4
Amount drives parking cam 3 to wait for an opportunity the tooth top of ratchet 2 to be pressed into the teeth groove of ratchet 1, realizes that parking is acted.
Releasing process：The rotating shaft 31 for driving parking cam 3 by EPP motors reversely rotates 65 ° so that parking cam
3 rotate to initial position.When vehicle is stopped on level road, the tooth top of ratchet 2 exits ratchet under the effect of return spring 5
1 teeth groove, realizes unlocking motion；When vehicle is stopped above ramp, the tooth top of ratchet 2 is in return spring 5 and tooth and teeth groove
Between tangential force collective effect under exit the teeth groove of ratchet 1, realize unlocking motion.
Claims (8)
1. a kind of vehicle electronic halting mechanism, including ratchet (1) and the ratchet (2) that is engaged with ratchet (1), the ratchet
(2) the back side is provided with the parking cam (3) that ratchet (2) is pressed into ratchet (1), and the parking cam (3) is furnished with cam spring
(4), the ratchet (2) is furnished with return spring (5), it is characterized in that：The electronic parking mechanism also includes spacing pressing plate (6), described
The two ends of spacing pressing plate (6) are sleeved on the camshaft (31) of parking cam (3) and the spine of ratchet (2) by mounting hole (61) respectively
On pawl axle (21), the free degree that ratchet (2) is moved axially along pawl axis (21) is limited by spacing pressing plate (6).
2. vehicle electronic halting mechanism as claimed in claim 1, it is characterized in that：Close to cam on the spacing pressing plate (6)
One end of axle (31) is provided with a spacing block set (62), and the spacing block set (62) is engaged with the top surface of ratchet (2).
3. vehicle electronic halting mechanism as claimed in claim 1 or 2, it is characterized in that：The back side of described ratchet (2) is also set
It is equipped with wear-resisting raised (22), ratchet (2) is pressed into ratchet (1) by the parking cam (3) by wear-resisting raised (22).
4. vehicle electronic halting mechanism as claimed in claim 3, it is characterized in that：The head of the ratchet (2) and ratchet (1)
The gear teeth are provided with one to the region of contact and thicken boss (23).
5. vehicle electronic halting mechanism as claimed in claim 3, it is characterized in that：Opened on the both sides end face of the ratchet (1)
Provided with an annular lightening grooves (11), the width h1 of the annular lightening grooves (11) is the 1/3 ~ 1/2 of the central shaft hole radius r of ratchet 1,
The inner ring of annular lightening grooves (11) is the 1/ of the width h1 of annular lightening grooves (11) with the spacing h2 of ratchet (1) central shaft hole inwall
3~1/2。
6. vehicle electronic halting mechanism as claimed in claim 3, it is characterized in that：It is further opened with the spacing pressing plate (6)
First reinforced hole (63).
7. vehicle electronic halting mechanism as claimed in claim 3, it is characterized in that：It is located at ratchet on the spacing pressing plate (6)
One end of axle (21) is additionally provided with reinforcement extension (64), and the end of the reinforcement extension (64) offers the second reinforced hole
(65)。
8. vehicle electronic halting mechanism as claimed in claim 3, it is characterized in that：Described cam spring (4) is annular elastomeric
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710498802.3A CN107264506A (en) | 2017-06-27 | 2017-06-27 | Vehicle electronic halting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710498802.3A CN107264506A (en) | 2017-06-27 | 2017-06-27 | Vehicle electronic halting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107264506A true CN107264506A (en) | 2017-10-20 |
Family
ID=60069230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710498802.3A Pending CN107264506A (en) | 2017-06-27 | 2017-06-27 | Vehicle electronic halting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107264506A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009030005A1 (en) * | 2009-06-23 | 2010-12-30 | Magna Powertrain Ag & Co Kg | Locking mechanism i.e. parking lock, for rotationally fixed locking of shaft of automatic transmission of motor vehicle, has ratchet wheel including damping element to damp force acting on ratchet wheel teeth during actuation of mechanism |
| CN201836362U (en) * | 2010-05-28 | 2011-05-18 | 浙江吉利汽车研究院有限公司 | Brake mechanism of automotive automatic transmission |
| DE102014202213A1 (en) * | 2014-02-06 | 2015-08-06 | Zf Friedrichshafen Ag | Parking lock of a motor vehicle |
| CN106439000A (en) * | 2016-11-28 | 2017-02-22 | 上海汽车变速器有限公司 | Electronic park mechanical executing mechanism |
-
2017
- 2017-06-27 CN CN201710498802.3A patent/CN107264506A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009030005A1 (en) * | 2009-06-23 | 2010-12-30 | Magna Powertrain Ag & Co Kg | Locking mechanism i.e. parking lock, for rotationally fixed locking of shaft of automatic transmission of motor vehicle, has ratchet wheel including damping element to damp force acting on ratchet wheel teeth during actuation of mechanism |
| CN201836362U (en) * | 2010-05-28 | 2011-05-18 | 浙江吉利汽车研究院有限公司 | Brake mechanism of automotive automatic transmission |
| DE102014202213A1 (en) * | 2014-02-06 | 2015-08-06 | Zf Friedrichshafen Ag | Parking lock of a motor vehicle |
| CN106439000A (en) * | 2016-11-28 | 2017-02-22 | 上海汽车变速器有限公司 | Electronic park mechanical executing mechanism |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |