CN201427572Y - Parking system - Google Patents
Parking system Download PDFInfo
- Publication number
- CN201427572Y CN201427572Y CN200920132519XU CN200920132519U CN201427572Y CN 201427572 Y CN201427572 Y CN 201427572Y CN 200920132519X U CN200920132519X U CN 200920132519XU CN 200920132519 U CN200920132519 U CN 200920132519U CN 201427572 Y CN201427572 Y CN 201427572Y
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- China
- Prior art keywords
- oil
- parking system
- oil pump
- pressure
- actuating cylinder
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Abstract
Disclosed is a parking system which comprises an oil pump, a motor, a two-position four-port reversing valve, a hydraulic cylinder, a pressure sensor, a controller, a friction plate and a friction disk. A rotary shaft of the motor is connected with a rotary shaft of the oil pump; an oil inlet of the oil pump is connected with an oil tank; an oil outlet of the oil pump is connected with an oil inlet end port of the two-position four-port reversing valve; an oil return end port of the two-position four-port reversing valve is connected with the oil tank; two working oil end ports of the two-position four-port reversing valve are respectively connected with two end ports of the hydraulic cylinder; a piston rod of the hydraulic cylinder is connected with the friction plate; the friction disk is fixed onto a transmission shaft; the pressure sensor is utilized for detecting the pressure intensity of hydraulic oil inside the hydraulic cylinder and transmitting pressure intensity signals to the controller; the controller is utilized for controlling the motor to work and the two-position four-port reversing valve to change directions. The parking system adopts hydraulic pressure to supply motive power to drive the friction plate and the friction disk to be locked or separated from each other so as to park vehicles or release parking. Compared with mechanical parking mechanisms, the parking system needs no complex analysis and calculation and is easy to be designed.
Description
Technical field
The utility model relates to a kind of parking system.
Background technology
Existing automobile mainly is divided into automatic transmission and manual two classes according to the difference of gear changing mode.Because automatic gear car is simple to operation, has obtained increasing people's favor, in general, mainly is provided with gears such as R shelves, D shelves, P shelves and N shelves on the automatic gear car.Wherein, the P shelves, promptly the Parking shelves utilize mechanical device to reach the purpose of Parking with being contained in the ratchet interlock on the transmission shaft exactly.
As depicted in figs. 1 and 2, a kind of representative type Parking actuating unit generally includes motor driving shaft 100, rotating disk 200, push rod 300, jacking block 3001, bearing 400, claw 500 and ratchet 600.Need glancing impact, motor driving shaft 100 rotations, driving rotating disk 200 rotates, rotating disk 200 drives push rod 300 moving linearlies, the jacking block 3001 on push rod 300 tops promotes claw 500 and rotates under the booster action of bearing 400, releasing position 5001 from Fig. 2 shown in the solid line moves to the locked position 5002 shown in the dotted line, makes claw 500 and ratchet 600 interlocks.Because ratchet 600 is contained on the transmission shaft of vehicle, thereby can reach the purpose of Parking.When needing to remove braking during standstill, motor driving shaft 100 opposite spins by rotating disk 200 and push rod 300, return the jacking block 3001 on push rod 300 tops, thereby claw 500 leaves ratchet 600 under the effect of pull back spring (not shown), thereby removes braking during standstill.
The straight-line motion of the push rod 300 of this halting mechanism is to lean on the rotation of rotating disk 200 to realize, so push rod 300 is being done the straight-line while, there is a deflection angle, simultaneously, because rotating disk 200 is complex-shaped, be difficult to calculate the miles of relative movement of push rod 300 and the rotational angle of claw 500, thus aspect structure design and Calculation and Analysis of Force complexity.
The utility model content
The purpose of this utility model is to overcome the shortcoming of existing halting mechanism complex structural designs, provides a kind of design to be easy to parking system.
A kind of parking system of the present utility model, wherein, comprise oil pump, motor, two-position four way change valve, hydraulic actuating cylinder, pressure sensor, controller, friction lining and friction disc, the rotating shaft of described motor links to each other with the rotating shaft of described oil pump, the oil inlet of described oil pump links to each other with fuel tank, the oil outlet of described oil pump links to each other with the oil-feed port of two-position four way change valve, the oil return port of described two-position four way change valve links to each other with fuel tank, two power fluid ports of described two-position four way change valve link to each other with two ports of hydraulic actuating cylinder respectively, the piston rod of described hydraulic actuating cylinder links to each other with friction lining, on the described friction disc fixed conveyor axle, described pressure sensor is used for detecting the pressure of described hydraulic actuating cylinder hydraulic oil, and sending pressure signal to described controller, described controller is used to control the described oil pump work of described driven by motor and is used to control two-position four way change valve and commutates.
Parking system of the present utility model, thus utilize hydraulic pressure to provide power to promote friction lining with the friction disc locking or separate, and then realize Parking or remove Parking.With respect to the mechanical type halting mechanism, the utility model does not need complicated Calculation and Analysis of Force, is easy to design.
Description of drawings
Fig. 1 is a kind of structural representation of traditional halting mechanism;
Fig. 2 is the structural representation of claw and ratchet portions among Fig. 1;
Fig. 3 is a kind of embodiment structural representation of the utility model parking system.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
According to a kind of embodiment of the present utility model, as shown in Figure 3, a kind of parking system, wherein, comprise oil pump 3, motor 4, two-position four way change valve 7, hydraulic actuating cylinder 9, pressure sensor 10, controller 5, friction lining 11 and friction disc 12, the rotating shaft of motor 4 links to each other with the rotating shaft of oil pump 3, the oil inlet of oil pump 3 links to each other with fuel tank 1, the oil outlet of oil pump 3 links to each other with the oil-feed port of two-position four way change valve 7, the oil return port of two-position four way change valve 7 links to each other with fuel tank 1, two power fluid ports of two-position four way change valve 7 link to each other with two ports of hydraulic actuating cylinder 9 respectively, the piston rod of hydraulic actuating cylinder 9 links to each other with friction lining 11, friction disc 12 links to each other with transmission shaft, pressure sensor 10 is used for the pressure of detective liquid cylinder pressure 9 hydraulic oil, and sending pressure signal to controller 5, controller 5 is used to control motor 4 and drives oil pumps 3 work and be used to control two-position four way change valve 7 and commutate.
Controller 5 can be to well known to a person skilled in the art programmable processor, ECU on micro controller system, dsp chip or the automobile etc. for example, and under the preferable case, this controller 5 is ECU.
Oil pump 3 can be the various suitable devices that are used for pump oil, as: gear type pump, blade-type pump and plunger pump etc.
After thereby motor 4 drives oil pump 3 rotation promotion friction linings 11 and friction disc 12 lockings realization Parking or removes Parking, need motor 4 and oil pump 3 not to stop work to do to keep the locking of friction lining 11 and friction disc 12 or separate, may make motor 4 cal vals big like this, and then influence service life, in order to prevent the appearance of this phenomenon, preferably, this parking system also comprises accumulator 8, accumulator 8 by plumbing connection between the oil-feed port of oil pump 3 and two-position four way change valve 7, like this when the needs Parking, motor 4 drives oil pump 3 and rotates, a hydraulic oil part enters in the hydraulic actuating cylinder 9 and realizes Parking, and another part enters and is stored in the accumulator 8 in the accumulator 8, after friction lining 11 and friction disc 12 lockings, motor 4 can quit work, and the hydraulic oil in the accumulator 8 can be kept the locking of friction lining 11 and friction disc 12 at this moment.
Energy storage 8 for example can be spring accumul ator and inflatable energy storage etc. for well known to a person skilled in the art closed-center system, is preferably the inflatable energy storage.
In order to prevent that the lubricating oil in the accumulator 8 from can pass through oil pump 3 refluence oil sump tanks 1, also is provided with check valve 6 between oil pump 3 and pressure sensor 10.Hydraulic oil in the accumulator 8 just can only enter hydraulic actuating cylinder 9 and the oil sump tank 1 that can not flow backwards like this.Pressure sensor 10 can be on the pipeline between the oil-feed port of check valve 6 and two-position four way change valve 7, also can draw a segment pipe from the pipeline between the oil-feed port of check valve 6 and two-position four way change valve 7, pressure sensor 10 is positioned on the pipeline of drawing.
In order to prevent that the impurity in the fuel tank from entering oil pump 3 and hydraulic actuating cylinder 9, preferably, also be provided with filter 2 at the oil inlet place of oil pump 3, can before hydraulic oil enters oil pump 3, contaminant filter be fallen like this.
Thereby in order to prevent the too high damage of the hydraulic oil pressure accumulator 8 in the accumulator 8; more preferably; accumulator 8 links to each other with fuel tank 1; on accumulator 8 and fuel tank 1 bonded assembly pipeline, also be provided with the by pass valve (not shown); the conducting pressure of this by pass valve can be less than or equal to the highest pressure that accumulator 8 can bear; like this when the pressure in the accumulator 8 is too high, by pass valve conducting, thereby better protection accumulator 8.
In order to guarantee friction lining 11 and friction disc 12 complete lockings, one first minimum pressure values is set, the pressure when this first minimum pressure values is the complete locking of friction lining 11 and friction disc 12 in the hydraulic actuating cylinder 9, this pressure values can record by experiment.Pressure sensor 10 is monitored the pressure in the hydraulic actuating cylinder 9 at any time, when pressure sensor 10 detects pressure values in the hydraulic actuating cylinder 9 and reaches the first minimum pressure values, the pressure signal that controller 5 sends according to pressure sensor 10 is judged the pressure values of this moment and is equaled the first minimum pressure values, be that may command motor 4 stops operating, at this moment, rely on accumulator 8 pressure to be provided for hydraulic actuating cylinder 9, thereby guarantee friction lining 11 and friction disc 12 lockings, prevent that friction lining 11 from separating with friction disc 12 and contingency occurs.
In order to guarantee that friction lining 11 separates at the contact glancing impact fully with friction disc 12, one second minimum pressure values is set, the pressure when this pressure values can be separated with friction disc 12 fully for friction lining 11 in the hydraulic actuating cylinder 9, this pressure values can record by experiment.Pressure sensor 10 is monitored the pressure in the hydraulic actuating cylinder 9 at any time, when pressure sensor 10 detects pressure values in the hydraulic actuating cylinder 9 and reaches the second minimum pressure values, the pressure signal that controller 5 sends according to pressure sensor 10 is judged the pressure values of this moment and is equaled the second minimum pressure values, be that may command motor 4 stops operating, at this moment, rely on accumulator 8 pressure to be provided for hydraulic actuating cylinder 9, thereby guarantee that friction lining 11 separates with friction disc 12, thereby prevent that friction lining 11 from combining the damage that causes vehicle part and the generation of traffic accident with friction disc 12.
According to a kind of embodiment of the present utility model, as shown in Figure 3, the working process of the utility model parking system is as follows:
When the needs Parking, controller 5 control motors 4 rotate, thereby driving oil pump 3 rotates, controller 5 control two-position four way change valves 7 commutations this moment, and then a hydraulic oil part is input in the accumulator 8, a part is input in the hydraulic actuating cylinder 9, and the hydraulic oil that is input in the hydraulic actuating cylinder 9 promotes piston rod 91 drive friction linings 11 and friction disc 12 lockings, and the hydraulic oil in the hydraulic actuating cylinder other end flows back to fuel tank 1 by the oil return port of two-position four way change valve 7 at this moment.When pressure sensor 10 detected pressure signal reached the first minimum pressure values, controller 5 control motors 4 stopped operating, and relied on this moment accumulator 8 to keep pressure in the hydraulic actuating cylinder 9, thereby guaranteed friction lining 11 and friction disc 12 lockings.When pressure sensor 10 detects pressure in the hydraulic actuating cylinder 9 and is lower than the first minimum pressure values, controller 5 control motors 4 rotate pressure in hydraulic actuating cylinder 9 when reaching the first minimum pressure values control motor 4 stop operating.
When needs are removed Parking, controller 5 control motors 4 rotate, thereby driving oil pump 3 rotates, controller 5 control two-position four way change valves 7 commutations this moment, and then a hydraulic oil part is input in the accumulator 8, a part is input in the hydraulic actuating cylinder 9, and the hydraulic oil promotion piston rod 91 drive friction linings 11 that are input in the hydraulic actuating cylinder 9 separate with friction disc 12, and the hydraulic oil in the hydraulic actuating cylinder other end flows back to fuel tank 1 by the oil return port of two-position four way change valve 7 at this moment.When pressure sensor 10 detected pressure signal reached the second minimum pressure values, controller 5 control motors 4 stopped operating, and relied on this moment accumulator 8 to keep pressure in the hydraulic actuating cylinder 9, thereby guaranteed that friction lining 11 separates with friction disc 12.When pressure sensor 10 detects pressure in the hydraulic actuating cylinder 9 and is lower than the second minimum pressure values, controller 5 control motors 4 rotate pressure in hydraulic actuating cylinder 9 when reaching the second minimum pressure values control motor 4 stop operating.
Parking system of the present utility model, thereby utilize hydraulic pressure to provide power to promote friction lining 11 with friction disc 12 lockings or separate, thereby realize Parking and remove Parking, do not need picture mechanical type halting mechanism when design, to want complex relationship between the rotation of the miles of relative movement of the rotational angle of analytical calculation rotating disk and push rod and claw, help simplifying the design of parking system.
Claims (6)
1, a kind of parking system, it is characterized in that, comprise oil pump, motor, two-position four way change valve, hydraulic actuating cylinder, pressure sensor, controller, friction lining and friction disc, the rotating shaft of described motor links to each other with the rotating shaft of described oil pump, the oil inlet of described oil pump links to each other with fuel tank, the oil outlet of described oil pump links to each other with the oil-feed port of two-position four way change valve, the oil return port of described two-position four way change valve links to each other with fuel tank, two power fluid ports of described two-position four way change valve link to each other with two ports of hydraulic actuating cylinder respectively, the piston rod of described hydraulic actuating cylinder links to each other with friction lining, described friction disc is fixed on the transmission shaft, described pressure sensor is used for detecting the pressure of described hydraulic actuating cylinder hydraulic oil, and sending pressure signal to described controller, described controller is used to control the described oil pump work of described driven by motor and is used to control two-position four way change valve and commutates.
2, parking system according to claim 1, it is characterized in that, described parking system also comprises accumulator, and the oil outlet of described accumulator is connected between the oil-feed port of the oil outlet of described oil pump and described two-position four way change valve, and described accumulator is used for keeping the pressure of hydraulic actuating cylinder.
3, parking system according to claim 2 is characterized in that, described parking system also comprises check valve, and described check valve is connected the oil outlet place of described oil pump.
4, parking system according to claim 3 is characterized in that, described parking system also comprises the filter that is connected described oil pump oil inlet place.
5, parking system according to claim 4 is characterized in that, described accumulator also links to each other with fuel tank, also is provided with by pass valve between described accumulator and fuel tank.
6, parking system according to claim 5 is characterized in that, described pressure sensor is on the pipeline between described check valve and the described two-position four way change valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920132519XU CN201427572Y (en) | 2009-05-31 | 2009-05-31 | Parking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920132519XU CN201427572Y (en) | 2009-05-31 | 2009-05-31 | Parking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201427572Y true CN201427572Y (en) | 2010-03-24 |
Family
ID=42031301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920132519XU Expired - Lifetime CN201427572Y (en) | 2009-05-31 | 2009-05-31 | Parking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201427572Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729972A (en) * | 2012-06-11 | 2012-10-17 | 南京理工大学 | Hydraulically-controlled electronic parking executing mechanism |
| CN103935347A (en) * | 2014-04-30 | 2014-07-23 | 长城汽车股份有限公司 | Multifunctional automobile braking system |
| CN106315459A (en) * | 2015-06-30 | 2017-01-11 | 比亚迪股份有限公司 | Parking braking system for forklift and forklift provided with parking braking system |
| CN106926833A (en) * | 2015-12-30 | 2017-07-07 | 大陆泰密克汽车系统（上海）有限公司 | A kind of hydraulic pressure parking assist brakes and the vehicle with the system |
-
2009
- 2009-05-31 CN CN200920132519XU patent/CN201427572Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729972A (en) * | 2012-06-11 | 2012-10-17 | 南京理工大学 | Hydraulically-controlled electronic parking executing mechanism |
| CN102729972B (en) * | 2012-06-11 | 2014-04-30 | 南京理工大学 | Hydraulically-controlled electronic parking executing mechanism |
| CN103935347A (en) * | 2014-04-30 | 2014-07-23 | 长城汽车股份有限公司 | Multifunctional automobile braking system |
| CN106315459A (en) * | 2015-06-30 | 2017-01-11 | 比亚迪股份有限公司 | Parking braking system for forklift and forklift provided with parking braking system |
| CN106315459B (en) * | 2015-06-30 | 2019-03-29 | 比亚迪股份有限公司 | Fork truck parking braking system and fork truck with it |
| CN106926833A (en) * | 2015-12-30 | 2017-07-07 | 大陆泰密克汽车系统（上海）有限公司 | A kind of hydraulic pressure parking assist brakes and the vehicle with the system |
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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: 20100324 |
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| CX01 | Expiry of patent term |