CN207830543U - A kind of automatic transmission parking brake - Google Patents
A kind of automatic transmission parking brake Download PDFInfo
- Publication number
- CN207830543U CN207830543U CN201820089563.6U CN201820089563U CN207830543U CN 207830543 U CN207830543 U CN 207830543U CN 201820089563 U CN201820089563 U CN 201820089563U CN 207830543 U CN207830543 U CN 207830543U
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- CN
- China
- Prior art keywords
- electromagnetic actuator
- ratchet
- group
- inscribed
- parking brake
- 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 - Fee Related
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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model discloses a kind of automatic transmission parking brake, including：Inscribed ratchet is annular disk-shaped, the peripherally disposed multiple hook tooths of inner ring of ratchet is inscribed；First group of electromagnetic actuator comprising two electromagnetic actuators being diametrically arranged along inscribed ratchet, electromagnetic actuator are mounted on case of transmission；The electromagnetic actuator is fixedly connected with park pawl close to one end of inscribed ratchet；Second group of electromagnetic actuator is identical as first group of electromagnetic actuator structure；Wherein, the park pawl of first group of electromagnetic actuator and second group of electromagnetic actuator being capable of the into and out inscribed ratchet, when two park pawls of first group of electromagnetic actuator and hook tooth position to it is corresponding when second group of electromagnetic actuator two park pawls it is corresponding with the position at hook tooth bottom respectively.Automatic transmission parking brake provided by the utility model, simple in structure, occupied space is smaller, and can improve parking success rate.
Description
Technical field
The utility model belongs to automobile parking braking technical field, more particularly to a kind of automatic transmission parking braking
Device.
Background technology
Today's society, automobile have become people's vehicles indispensable in life.With the development of science and technology
With the improvement of people's living standards, requirement of the people to automobile is more and more high, and automobile is no longer only common walking-replacing tool, and
Rising becomes an a kind of cultural, symbol, and the importance of automobile is self-evident.Therefore, the security performance of automobile also increasingly by
To attention.
Parking brake typically refers to the hand-operated brake of motor vehicles installation, for stablizing vehicle after vehicle comes to a complete stop, such as
Fruit parking braking effect is bad, and when stopping on inclined route vehicle sliding phenomenon may occur for vehicle, cause serious traffic
Accident.
Existing parking brake generally uses external ratchet, and parking ratchet wheel generally requires the holding of other mechanical interlock mechanisms
Lockup state, the space occupied is larger, complicated, and parking response speed is slow；Additionally due to the factors such as Vehicular vibration cause
Parking it is uncertain, can not ensure parking success rate.
Utility model content
One purpose of the utility model is the defect for overcoming existing parking brake occupied space big, provides one kind and adopts
With inscribed ratchet, the smaller automatic transmission parking brake of occupied space.
Another purpose of the utility model is to overcome the existing low success rate of defect of parking brake parking, provides one
Parking brake of the kind equipped with two groups of park pawls arranged at an angle, can effectively ensure that the parking system of parking success rate
Dynamic device.
Technical solution provided by the utility model is：
A kind of automatic transmission parking brake, including：
Gear box casing；
Inscribed ratchet is annular disk-shaped, the peripherally disposed multiple hook tooths of inner ring of the inscribed ratchet；
First group of electromagnetic actuator comprising two electromagnetic actuators being diametrically arranged along inscribed ratchet, institute
Electromagnetic actuator is stated on case of transmission, and is at certain angle of inclination with the gear box casing；The electromagnetism is held
Row mechanism is fixedly connected with park pawl close to one end of inscribed ratchet；
Second group of electromagnetic actuator comprising two electromagnetic actuators being diametrically arranged along inscribed ratchet, institute
Electromagnetic actuator is stated on case of transmission, and is at certain angle of inclination with the gear box casing；The electromagnetism is held
Row mechanism is fixedly connected with park pawl close to one end of inscribed ratchet；
Wherein, the park pawl of first group of electromagnetic actuator and second group of electromagnetic actuator can enter or take off
From the inscribed ratchet, when two park pawls of first group of electromagnetic actuator and hook tooth position to it is corresponding when second group of electricity
Two park pawls of magnetic executing agency are corresponding with the position at hook tooth bottom respectively.
Preferably, the hook tooth is along the diametrically setting that ratchet is inscribed, and each pair of hook tooth is about the inscribed spine
The central symmetry of wheel.
Preferably, the installation end of the park pawl is fixedly connected on electromagnetic actuator, the braking of park pawl
End is vertical with the end face of inscribed ratchet.
Preferably, the electromagnetic actuator and the angle α formed between gear box casing of telling are 50-70
Degree.
Preferably, the hook tooth bottom of the inscribed ratchet is arc-shaped, and the dog point of the park pawl is cylinder,
The dog point and hook tooth bottom clearance fit.
Preferably, embedded setting magnetic element on the side wall of the dog point of the park pawl.
Preferably, the electromagnetic actuator is single freeze mode calutron.
Preferably, the automatic transmission parking brake further includes position-detection sensor, is mounted on speed change
On device shell, for detecting whether park pawl enters lock position.
The beneficial effects of the utility model include：
(1) automatic transmission parking brake provided by the utility model, using inscribed ratchet, the parking with circumscribed
Ratchet is compared, simple in structure, can save the radial space of speed changer.
(2) automatic transmission parking brake provided by the utility model, two groups of park pawls arrange at an angle,
Guarantee can all have one group of electromagnetic actuator that can axially be engaged with parking ratchet wheel in any case, and structural stability is good.
(3) automatic transmission parking brake provided by the utility model, circle of the park pawl from the inscribed ratchet
It is oblique on the inside of ring to be inserted into the inscribed ratchet, the abrasion between park pawl and inscribed ratchet can be reduced, parking braking is improved
The service life of device；Meanwhile avoid parking terminate unlock when park pawl by the effect of braking moment and cannot succeed be detached from ask
Topic.
(4) automatic transmission parking brake provided by the utility model drives parking spine using electromagnetic actuator
Pawl, the calutron response time is short, and movement response is sensitive reliable.
(5) automatic transmission parking brake provided by the utility model, the electromagnetic actuator used keep to be single
Formula calutron, size is smaller, and operating voltage is direct current (DC) 24V, identical as automobile battery voltage, and convenient electromagnetic executes machine
Structure is installed and used；Locking and unlocked position, parking park pawl is kept to move to finger using the permanent magnetism retentivity of calutron
Positioning postpones cut-off power supply to save electric energy, reaches energy-saving and environment-friendly effect.
Description of the drawings
Fig. 1 is automatic transmission parking brake general structure schematic diagram described in the utility model.
Fig. 2 is the first pawl group described in the utility model and inscribed ratchet mesh schematic representation.
Fig. 3 is that the first pawl group described in the utility model engages diagrammatic cross-section with inscribed ratchet.
Fig. 4 is magnetic element schematic view of the mounting position described in the utility model.
Specific implementation mode
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art with reference to explanation
Book word can be implemented according to this.
As shown in Figs. 1-3, the utility model provides a kind of automatic transmission parking brake, a kind of automatic transmission
With parking brake, including：The inscribed ratchet 100 being fixedly connected on transmission output shaft, to be annular disk-shaped, it is described in
The peripherally disposed multipair hook tooth of inner ring of ratchet 100 is connect, each pair of hook tooth includes two ratchets being diametrically arranged
The central symmetry of tooth 111 and hook tooth 112, i.e. hook tooth 111 and hook tooth 112 about the inscribed ratchet.First group of electromagnetism
Executing agency comprising electromagnetic actuator 210 and electromagnetic actuator 220, second group of electromagnetic actuator comprising electromagnetism
The mounting surface for being connected on case of transmission is respectively fixedly connected in executing agency 230 and electromagnetic actuator 240, two groups of electromagnetic actuators
On 200.First pawl group comprising two park pawls 120 diametrically arranged and park pawl along inscribed ratchet 100
130, the dog point 121 of park pawl 120 and the dog point 131 of park pawl 130 close to the end face of the inscribed ratchet 100,
The installation end 122 of park pawl 120 and the installation end 132 of park pawl 130 are respectively fixedly connected in 210 He of electromagnetic actuator
On electromagnetic actuator 220.Second pawl group comprising two park pawls 140 diametrically arranged along inscribed ratchet
With park pawl 150, the angle of the arranged direction of the second pawl group and the first pawl group at an angle, the parking spine
The dog point of pawl 140 and the dog point of park pawl 150 are close to the end face of the inscribed ratchet 100, the installation of park pawl 140
The installation end of end and park pawl 150 is respectively fixedly connected on electromagnetic actuator 230 and electromagnetic actuator 240.It is described
Two park pawls 120 and park pawl 130 of first pawl group and two park pawls 140 of the second pawl group and parking
The dog point of pawl 150 can enter under the driving of electromagnetic actuator corresponding thereto or exit the inscribed spine respectively
Wheel 100.
Wherein, when two park pawls 120 and park pawl 130 of the first ratchet group respectively with hook tooth 111 and ratchet
The park pawl 140 of the second pawl group and park pawl 150 are corresponding with 113 position of hook tooth bottom when the position of tooth 112 is to corresponding to；
Similarly, when the park pawl 120 of the first pawl group and park pawl 130 and 113 position of hook tooth bottom to it is corresponding when the second ratchet group
Two park pawls 140 and park pawl 150 it is corresponding with the position of hook tooth 111 and hook tooth 112 respectively；I.e. no matter ratchet
Turn to where, be always ensured that there are one park pawl groups to be inserted into inscribed ratchet 100, nibbled with inscribed ratchet 100
It closes, realizes braking.Meanwhile being engaged simultaneously with inscribed ratchet using two park pawls, brake drag can be shared, avoids and stays
The problem of part breakage occurs because of big stress for lock locking mechanism.
The dog point of four park pawls is vertical with the end face of the inscribed ratchet 100.Four electromagnetism are held
The gear box casing mounting surface 200 of row mechanism is parallel with the end face of the inscribed ratchet 100, the electromagnetic actuator with it is described
Inclined angle α between gear box casing mounting surface 200, electromagnetic actuator 210 and electromagnetic actuator 220 are symmetrical arranged, electricity
Magnetic executing agency 230 and electromagnetic actuator 240 are symmetrical arranged, and are made electromagnetic actuator to the motive force of park pawl and are inscribed
The end face of ratchet 100 tilts at an angle, i.e. four park pawls are oblique on the inside of the annulus of the inscribed ratchet to insert
Enter the inscribed ratchet 100.Abrasion when reducing parking between park pawl and inscribed ratchet improves the longevity of parking brake
Life；Meanwhile avoiding the problem that park pawl cannot be successfully detached from by the effect of braking moment when parking terminates unlock.It is preferred that
, the angle α is 50-70 degree.
In the present embodiment, the hook tooth bottom 113 of the inscribed ratchet 100 is arc-shaped, the braking of the park pawl
End is cylinder, the dog point and 113 clearance fit of hook tooth bottom.It is embedded on the side wall of each park pawl dog point
Magnetic element 160 is arranged in formula, as shown in Figure 4.
Automatic transmission parking brake provided by the utility model further includes that position-detection sensor (does not show in figure
Go out), it is mounted on case of transmission, for detecting whether park pawl enters lock position.The position-detection sensor
The position for being measured to magnetic element 160 can be incuded, to judge whether the park pawl where magnetic element 160 enters locking
It (is engaged with inscribed ratchet 100) position.The electromagnetic actuator is using single freeze mode calutron, when electromagnetic actuator
After coil is powered, corresponding park pawl is pushed out, due to the permanent magnetism retentivity of electromagnetic mechanism itself generation after coil blackout
Park pawl can be made to be maintained at release location, keep on-position.When applying negative direction electric current, park pawl is pulled, power-off
Position is retracted since the permanent magnetism retentivity that electromagnetic mechanism itself generates can be such that park pawl is maintained at afterwards, makes park pawl and is inscribed
Ratchet detaches, and terminates parked state.Single freeze mode calutron size that the utility model uses is smaller, and operating voltage is direct current
(DC) 24V, identical as automobile battery voltage, convenient electromagnetic executing agency installs and uses.It is produced furthermore with electromagnetic mechanism itself
Raw permanent magnetism retentivity keeps locking and unlocked position, and park pawl, which moves to behind designated position, can be cut off power supply to save electric energy,
Reach energy-saving and environment-friendly effect.
Automatic transmission parking brake provided by the utility model, using inscribed ratchet, the parking spine with circumscribed
Wheel is compared, simple in structure, can save the radial space of speed changer.Two groups of park pawls arrange that controller is logical at an angle
The signal input for crossing position-detection sensor judges that electromagnetic actuator acts in next step, and guarantee can all have one group in any case
Electromagnetic actuator can axially be engaged with parking ratchet wheel, improve parking success rate.
Automatic transmission parking brake provided by the utility model drives park pawl using electromagnetic actuator,
The calutron response time is short, and movement response is sensitive reliable.The electromagnetic actuator used is single freeze mode calutron, ruler
Very little smaller, operating voltage is direct current (DC) 24V, and identical as automobile battery voltage, convenient electromagnetic executing agency installs and uses；Profit
Keep locking and unlocked position with the permanent magnetism retentivity of magnet, parking park pawl move to behind designated position can be cut off power supply with
Electric energy is saved, energy-saving and environment-friendly effect is reached.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (8)
1. a kind of automatic transmission parking brake, which is characterized in that including：
Gear box casing；
Inscribed ratchet is annular disk-shaped, the peripherally disposed multiple hook tooths of inner ring of the inscribed ratchet；
First group of electromagnetic actuator comprising two electromagnetic actuators being diametrically arranged along inscribed ratchet, the electricity
Magnetic executing agency is mounted on case of transmission, and is at certain angle of inclination with the gear box casing；The electromagnetism executes machine
Structure is fixedly connected with park pawl close to one end of inscribed ratchet；
Second group of electromagnetic actuator comprising two electromagnetic actuators being diametrically arranged along inscribed ratchet, the electricity
Magnetic executing agency is mounted on case of transmission, and is at certain angle of inclination with the gear box casing；The electromagnetism executes machine
Structure is fixedly connected with park pawl close to one end of inscribed ratchet；
Wherein, the park pawl of first group of electromagnetic actuator and second group of electromagnetic actuator being capable of into and out institute
State inscribed ratchet, when two park pawls of first group of electromagnetic actuator and hook tooth position to it is corresponding when second group of electromagnetism hold
Two park pawls of row mechanism are corresponding with the position at hook tooth bottom respectively.
2. automatic transmission parking brake according to claim 1, which is characterized in that the hook tooth is along inscribed spine
The diametrically setting of wheel, central symmetry of each pair of hook tooth about the inscribed ratchet.
3. automatic transmission parking brake according to claim 1, which is characterized in that the installation of the park pawl
End is fixedly connected on electromagnetic actuator, and the dog point of park pawl is vertical with the end face of inscribed ratchet.
4. automatic transmission parking brake according to claim 3, which is characterized in that the electromagnetic actuator with
The angle α formed between the gear box casing is 50-70 degree.
5. automatic transmission parking brake according to claim 4, which is characterized in that the ratchet of the inscribed ratchet
Bottom of the tooth is arc-shaped, and the dog point of the park pawl is cylinder, the dog point and hook tooth bottom clearance fit.
6. the automatic transmission parking brake according to claim 3 or 5, which is characterized in that the park pawl
Embedded setting magnetic element on the side wall of dog point.
7. automatic transmission parking brake according to claim 1, which is characterized in that the electromagnetic actuator is
Single freeze mode calutron.
8. automatic transmission parking brake according to claim 1, which is characterized in that further include position detection sensing
Device is mounted on case of transmission, for detecting whether park pawl enters lock position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820089563.6U CN207830543U (en) | 2018-01-19 | 2018-01-19 | A kind of automatic transmission parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820089563.6U CN207830543U (en) | 2018-01-19 | 2018-01-19 | A kind of automatic transmission parking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830543U true CN207830543U (en) | 2018-09-07 |
Family
ID=63393667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820089563.6U Expired - Fee Related CN207830543U (en) | 2018-01-19 | 2018-01-19 | A kind of automatic transmission parking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006222A (en) * | 2018-01-19 | 2018-05-08 | 吉林大学 | A kind of automatic transmission parking brake and its control method |
-
2018
- 2018-01-19 CN CN201820089563.6U patent/CN207830543U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006222A (en) * | 2018-01-19 | 2018-05-08 | 吉林大学 | A kind of automatic transmission parking brake and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180907 Termination date: 20220119 |