CN202144253U - Self-locking protecting device for parking brake - Google Patents
Self-locking protecting device for parking brake Download PDFInfo
- Publication number
- CN202144253U CN202144253U CN201120247808U CN201120247808U CN202144253U CN 202144253 U CN202144253 U CN 202144253U CN 201120247808 U CN201120247808 U CN 201120247808U CN 201120247808 U CN201120247808 U CN 201120247808U CN 202144253 U CN202144253 U CN 202144253U
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- CN
- China
- Prior art keywords
- oil
- solenoid valve
- way solenoid
- oil pipe
- hydraulic fluid
- 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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Abstract
The utility model relates to a self-locking protecting device for a parking brake. The self-locking protecting device for the parking brake comprises an oil tank, a coarse filter, an oil pump, a two-position four-way solenoid valve, an overflow valve, a claw, a ratchet pull rod, an oil cylinder and an ignition switch, wherein the oil tank is connected with an oil inlet of the coarse filter through an oil pipe; the oil outlet of the coarse filter is connected with the oil inlet of the oil pump through an oil pipe; the oil outlet of the oil pump is divided into two branch circuits; one branch circuit is connected with an oil port P of the two-position four-way solenoid valve through an oil pipe; the other branch circuit is connected with an oil return tank through the overflow valve; the oil port A of the two-position four-way solenoid valve is connected with the left cavity of the oil cylinder through an oil pipe; the oil port B of the two-position four-way solenoid valve is connected with the right cavity of the oil cylinder through an oil pipe; the oil port O of the two-position four-way solenoid valve is connected with the oil return tank through the oil pipe; and the claw is clamped on the ratchet pull rod. The self-locking protecting device for the parking brake has the advantage that after the ignition switch is disconnected, a driver is easy to pull a handle for brake, and the handle can not be pushed to release the brake, so that accidents caused by pushing the handle mistakenly to release the brake are prevented.
Description
Technical field
The utility model relates to a kind of Parking Brake self-locking protecting device of car.
Background technology
The effect of Parking Brake is that automobile behind the stagnation of movement is prevented is smooth, is convenient to uphill starting, and the back is interim used or the cooperation running brake carried out emergency braking when service brake usefulness lost efficacy.What present most automobile adopted is centre brake, and some employing is compound type brake.No matter Chinese patent is which kind of drg, because structural defective, ignition lock is closed still to be broken off no matter cause, and all can pull out or push back brake-applying handle and realize braking or brake off.There is potential danger in this mode of operation, and as working as automobile parking in the place that certain slope is arranged, maloperation has pushed back brake-applying handle, is prone to make dash under the automobile or fall to slip cause accident.
Summary of the invention
The self-locking protecting device that the technical matters that the utility model will solve provides a kind of Parking Brake with solve because of the people be maloperation make automobile under towards or back skating cause the problem of accident.
For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of self-locking protecting device of Parking Brake; Comprise fuel tank, coarse filter, oil pump, two-position four-way solenoid valve, by pass valve, claw, oil cylinder, ratchet pull bar, ignition lock, it is characterized in that: said fuel tank is connected with the oil inlet of coarse filter through oil pipe; The oil outlet of said coarse filter is connected with the oil inlet of oil pump through oil pipe; The oil outlet of said oil pump is divided into two branch roads, and a branch road is connected with the hydraulic fluid port P of two-position four-way solenoid valve through oil pipe, and another branch road takes back fuel tank through by pass valve; The hydraulic fluid port A of said two-position four-way solenoid valve is connected with chamber, an oil cylinder left side through oil pipe; The hydraulic fluid port B of said two-position four-way solenoid valve is connected with right cavity of cylinder through oil pipe; The hydraulic fluid port O of said two-position four-way solenoid valve takes back fuel tank through oil pipe; Said claw is fixed on the end of oil cylinder piston connecting rod; Said claw is stuck on the ratchet pull bar.
The other parallelly connected current branch of said ignition lock circuit, and be connected in parallel on the other current branch of ignition lock circuit and be in series successively by the coil of suppressor resistor, two-position four-way solenoid valve; A said end that is connected in parallel on the other current branch of ignition lock circuit is connected other end ground connection with the ignition lock circuit.
Owing to adopted self-locking protecting device, after ignition lock broke off, the driver pulled out the brake-applying handle braking easily, but can not push back the brake-applying handle brake off, thereby prevents to bring out accident because of maloperation pushes back the brake-applying handle brake off.And this self-locking protecting device is simple in structure, and is practical, installs easy to adjustly, and low cost of manufacture is easy to integrated.
Description of drawings
Fig. 1 is the structural representation of the self-locking protecting device of Parking Brake.
Fig. 2 is the circuit diagram of self-locking protecting device current branch.
Wherein, 1, fuel tank; 2, coarse filter; 3, oil pump; 4, hydraulic fluid port O; 5, hydraulic fluid port P; 6, two-position four-way solenoid valve; 7, hydraulic fluid port B; 8, hydraulic fluid port A; 9, by pass valve; 10, piston rod; 11, claw; 12, right chamber; 13, left chamber; 14, oil cylinder; 15, ratchet pull bar; 16, ignition lock; 17, suppressor resistor; 18, coil.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model is carried out detailed description.
As shown in Figure 1, the self-locking protecting device of this Parking Brake comprises fuel tank 1, coarse filter 2, oil pump 3, two-position four-way solenoid valve 6, by pass valve 9, claw 11, oil cylinder 14, ratchet pull bar 15, ignition lock 16; Fuel tank 1 is connected with the oil inlet of coarse filter 2 through oil pipe; The oil outlet of coarse filter 2 is connected with the oil inlet of oil pump 3 through oil pipe; The oil outlet of oil pump 3 is divided into two branch roads, and a branch road is connected with the hydraulic fluid port P5 of two-position four-way solenoid valve 6 through oil pipe, and another branch road takes back fuel tank 1 through by pass valve 9; The hydraulic fluid port A8 of two-position four-way solenoid valve 6 is connected with oil cylinder 14 left chambeies 13 through oil pipe; The hydraulic fluid port B7 of two-position four-way solenoid valve 6 is connected with oil cylinder 14 right chambeies 12 through oil pipe; The hydraulic fluid port O4 of two-position four-way solenoid valve 6 takes back fuel tank 1 through oil pipe; Claw 11 is fixed on the end of oil cylinder 14 piston rods 10; Claw 11 is stuck on the ratchet pull bar 15.
Fig. 2 provides a current branch of the other parallel connection of ignition lock 16 circuit, and is connected in parallel on the other current branch of ignition lock 16 circuit and is in series successively by the coil 18 of suppressor resistor 17, two-position four-way solenoid valve 6; Ignition lock 16 is arranged on the way circuit; Other element of ignition lock 16 circuit is not presented among Fig. 2; An end that is connected in parallel on the other current branch of ignition lock 16 circuit is connected other end ground connection with ignition lock 16 circuit.
During use, ignition lock 16 closed embodiments with ignition lock 16 disconnection two states are different.
First kind of embodiment: if ignition lock 16 closures; This moment, the coil 18 of two-position four-way solenoid valve 6 was switched on; Two-position four-way solenoid valve 6 armature are by adhesive, and the spool of two-position four-way solenoid valve 6 moves to left end, and two-position four-way solenoid valve 6 is in right position; Two-position four-way solenoid valve 6 hydraulic fluid port P5 communicate with two-position four-way solenoid valve 6 hydraulic fluid port B7, and two-position four-way solenoid valve 6 hydraulic fluid port A8 communicate with two-position four-way solenoid valve 6 hydraulic fluid port O4.Small size motor drives oil pump 3 runnings; The pressure oil that oil pump 3 is extracted out gets into the right chamber 12 of oil cylinder 14 through oil outlet, oil pipe, two-position four-way solenoid valve 6 hydraulic fluid port P5, hydraulic fluid port B8, the oil pipe of oil pump 3; Pressure oil produces oil pressure left to the piston in the oil cylinder 14; Promote piston and piston rod 10, claw 11 is moved to the left, away from ratchet pull bar 15, pulling out and pushing back and do not have influence brake-applying handle.The extruding that the oil in oil cylinder 14 left chambeies 13 is moved to left by oil cylinder 14 pistons is flowed back to fuel tank 1 through oil pipe through two-position four-way solenoid valve 6 hydraulic fluid port A8, hydraulic fluid port O4, oil pipe.
Second kind of embodiment: if ignition lock 16 breaks off; This moment, the coil 18 of two-position four-way solenoid valve 6 cut off the power supply; Two-position four-way solenoid valve 6 medi-springs are pushed into right-hand member with the spool of two-position four-way solenoid valve 6; Two-position four-way solenoid valve 6 is in position, a left side, and two-position four-way solenoid valve 6 hydraulic fluid port P5 communicate with two-position four-way solenoid valve 6 hydraulic fluid port A8, and two-position four-way solenoid valve 6 hydraulic fluid port B7 communicate with two-position four-way solenoid valve 6 hydraulic fluid port O4.Small size motor drives oil pump 3 runnings; The pressure oil that oil pump 3 is extracted out gets into the left chamber 13 of oil cylinder 14 through oil outlet, oil pipe, two-position four-way solenoid valve 6 hydraulic fluid port P5, hydraulic fluid port A8, the oil pipe of oil pump 3; Pressure oil produces oil pressure to the right to the piston in the oil cylinder 14, and promotion piston and piston rod 10, claw 11 move right, and claw 11 is stuck on the ratchet pull bar 15; Ratchet pull bar 15 is produced certain power effect; The action direction of this power is consistent with glancing impact ratchet pull bar 15 hand of rotation, thus to the braking operation be that pulling out of brake-applying handle helps the power effect, be beneficial to braking; But claw 11 is stuck on the ratchet pull bar 15; Ratchet pull bar 15 hand of rotation are opposite when the action direction of the power that ratchet pull bar 15 is produced and brake off; The inhibition that pushed back of handle is promptly formulated in the operation of brake off, can not be pushed back brake-applying handle, thereby play the self-lock protection effect.The extruding that the oil in oil cylinder 14 right chambeies 12 is moved to right by oil cylinder 14 pistons is flowed back to fuel tank 1 through oil pipe through two-position four-way solenoid valve 6 hydraulic fluid port B7, hydraulic fluid port O4, oil pipe.When ignition lock 16 closures, according to first kind of embodiment, ratchet pull bar 15 does not receive the influence of self-locking protecting device, pushes back brake-applying handle, can brake off.
As shown in Figure 1; When the oil pressure of oil pump 3 oil outlets too high; When being higher than the settling pressure of by pass valve 9, by pass valve 9 valve opens, pressure oil flows back to fuel tank 1 through by pass valve 9; Make pressure oil no longer get into oil cylinder 14, thereby two-position four-way solenoid valve 6, oil cylinder 14 branch roads are shielded through two-position four-way solenoid valve 6.
As shown in Figure 2, suppressor resistor 17 is arranged between the coil 18 of ignition lock 16 and two-position four-way solenoid valve 6, and when avoiding ignition lock 16 closed, the coil 18 of two-position four-way solenoid valve 6 damages because of electric current is excessive.
Claims (2)
1. the self-locking protecting device of a Parking Brake; Comprise fuel tank (1), coarse filter (2), oil pump (3), two-position four-way solenoid valve (6), by pass valve (9), claw (11), oil cylinder (14), ratchet pull bar (15), ignition lock (16), it is characterized in that: said fuel tank (1) is connected with the oil inlet of coarse filter (2) through oil pipe; The oil outlet of said coarse filter (2) is connected with the oil inlet of oil pump (3) through oil pipe; The oil outlet of said oil pump (3) is divided into two branch roads, and a branch road is connected with the hydraulic fluid port P (5) of two-position four-way solenoid valve (6) through oil pipe, and another branch road takes back fuel tank (1) through by pass valve (9); The hydraulic fluid port A (8) of said two-position four-way solenoid valve (6) is connected with the left chamber of oil cylinder (14) (13) through oil pipe; The hydraulic fluid port B (7) of said two-position four-way solenoid valve (6) is connected with the right chamber of oil cylinder (14) (12) through oil pipe; The hydraulic fluid port O (4) of said two-position four-way solenoid valve (6) takes back fuel tank (1) through oil pipe; Said claw (11) is fixed on the end of oil cylinder (14) piston rod (10); Said claw (11) is stuck on the ratchet pull bar (15).
2. according to the self-locking protecting device of the described Parking Brake of claim 1; It is characterized in that: the other parallelly connected current branch of said ignition lock (16) circuit, and be connected in parallel on the other current branch of ignition lock (16) circuit and be in series successively by the coil (18) of suppressor resistor (17), two-position four-way solenoid valve (6); A said end that is connected in parallel on the other current branch of ignition lock (16) circuit is connected other end ground connection with ignition lock (16) circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120247808U CN202144253U (en) | 2011-07-14 | 2011-07-14 | Self-locking protecting device for parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120247808U CN202144253U (en) | 2011-07-14 | 2011-07-14 | Self-locking protecting device for parking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202144253U true CN202144253U (en) | 2012-02-15 |
Family
ID=45580187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120247808U Expired - Fee Related CN202144253U (en) | 2011-07-14 | 2011-07-14 | Self-locking protecting device for parking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202144253U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072562A (en) * | 2013-01-23 | 2013-05-01 | 南京艾斯福汽车科技有限公司 | Pneumatic type integrated electronic parking brake valve with emergency operation |
| CN105443749A (en) * | 2015-12-15 | 2016-03-30 | 第一拖拉机股份有限公司 | Electric hydraulic control parking and locking mechanism of tractor |
| CN105438150A (en) * | 2016-01-20 | 2016-03-30 | 河南理工大学 | Safety and intelligent parking braking device |
-
2011
- 2011-07-14 CN CN201120247808U patent/CN202144253U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072562A (en) * | 2013-01-23 | 2013-05-01 | 南京艾斯福汽车科技有限公司 | Pneumatic type integrated electronic parking brake valve with emergency operation |
| CN103072562B (en) * | 2013-01-23 | 2014-11-05 | 南京艾斯福汽车科技有限公司 | Pneumatic type integrated electronic parking brake valve with emergency operation |
| CN105443749A (en) * | 2015-12-15 | 2016-03-30 | 第一拖拉机股份有限公司 | Electric hydraulic control parking and locking mechanism of tractor |
| CN105438150A (en) * | 2016-01-20 | 2016-03-30 | 河南理工大学 | Safety and intelligent parking braking device |
| CN105438150B (en) * | 2016-01-20 | 2018-03-27 | 河南理工大学 | Safety intelligent type holding brake device |
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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: 20120215 Termination date: 20140714 |
|
| EXPY | Termination of patent right or utility model |