CN205149836U - Vehicle braking device - Google Patents
Vehicle braking device Download PDFInfo
- Publication number
- CN205149836U CN205149836U CN201520872139.5U CN201520872139U CN205149836U CN 205149836 U CN205149836 U CN 205149836U CN 201520872139 U CN201520872139 U CN 201520872139U CN 205149836 U CN205149836 U CN 205149836U
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- piston
- chamber
- cylinder
- storage device
- wheel brake
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Abstract
The utility model relates to an adjust the vehicle braking device, especially vehicle braking device of wheel brake force. The device includes the pressure control jar that holds liquid device, wheel checking cylinder, inside and be provided with the piston, first chamber and second chamber are separated into to the pressure control jar to the piston, act on the drive arrangement of piston, a controlling means, it can be given the transport drive arrangement's electric energy is controlled, its structural feature lies in, first chamber and second chamber have inlet and liquid outlet separately, and both all are provided with with the wheel checking cylinder and in holding the flow path of liquid device and guarantee the check valve of working fluid from holding the liquid device and flowing to wheel checking cylinder orientation, still be provided with pressure relief device between liquid device and the wheel checking cylinder holding. The utility model provides high vehicle continuous system measured time arresting gear's response speed has prolonged the life of motor, has reduced power consumption, is showing and is improving emergency brake braking effect.
Description
Technical field
The utility model relates to the Vehicular brake device, particularly a kind of Vehicular brake device changing brake fluid pressure that regulate wheel braking force.
Background technology
Japanese Patent JP-A-9-511967 discloses a kind of brake system, and it comprises (a) wheel brake cylinder, and it is arranged to for producing braking under hydraulic pressure effect; (b) master cylinder, it comprises a pressurizing piston, its action according to the work of an artificial brake operation element, and working fluid being pressed into one is formed in the pressurized compartment in pressurizing piston front; (c) high-voltage power supply, its form is a Stress control cylinder, and it comprises a control plunger, its action according to the work of a motor, and there is a control presssure room, it is formed in the front of control plunger, and this control presssure room communicates with wheel brake cylinder; And (d) brake pressure control apparatus, it is for controlling the electric current being transported to motor, with the fluid pressure of the control presssure indoor of control presssure control cylinder, and controls the fluid pressure in wheel brake cylinder thus.Piston in prior art in Stress control cylinder only just has epitrochoidal chamber (" control presssure room " in documents) when advancing to same direction, when piston is advanced to Stress control cylinder bottom portion or unclamps artificial brake operation element, need reverse motors that piston is retracted original position with the work of restarting, epitrochoidal chamber is not had in the process that piston retracts, and the upstream of wheel brake cylinder is provided with pressure holding, to ensure continuing of braking force.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Vehicular brake device, it improves the existing brake system disclosed by above-mentioned open source literature, improve the speed of response of brake equipment and the service life of motor when vehicle is braked continuously, decrease the consumption of electric energy, significantly improve the braking effect of emergency brake.
It is this Vehicular brake device that the utility model solves the problems of the technologies described above adopted technical scheme, comprising:
A liquor storage device, houses working fluid in this liquor storage device;
The wheel brake cylinder of a hydraulic action, is used for acting on brake component;
An inside is provided with the Stress control cylinder of piston, and described piston is separated into the first chamber and the second chamber Stress control cylinder;
An actuating device acting on described piston;
A control setup, it can control the electric energy flowing to described actuating device, thus controls the pressure of working fluid in described wheel brake cylinder;
Its constructional feature is, described first chamber and the second chamber have an inlet and a liquid outlet separately, described inlet all communicates with liquor storage device, described liquid outlet all communicates with wheel brake cylinder, is provided with the check valve ensureing that working fluid flows from liquor storage device to wheel brake cylinder direction in the stream of inlet and liquor storage device and in the stream of liquid outlet and wheel brake cylinder; Also pressure purger is provided with between liquor storage device and wheel brake cylinder.First, when piston advances to the first chamber, first chamber is epitrochoidal chamber, working fluid flows into wheel brake cylinder the action removing to control brake component from the first chamber, in the second chamber, produce negative pressure simultaneously, working fluid enters the second chamber fluid infusion from liquor storage device, and check valve makes working fluid can not flow into the second chamber from wheel brake cylinder; Vice versa, and all can form an epitrochoidal chamber in its front of moving when the advance of piston and rollback, what take full advantage of piston retracts action, saves the switching frequency that electric energy also reduces direction of motor rotation, significantly improves the service life of motor; Secondly, owing to not needing frequently to change direction of motor rotation, when braking continuously, remarkable raising speed of response, improves the braking effect of emergency brake; Finally, pressure purger defines closed loop between wheel brake cylinder and liquor storage device, makes the braking maneuver of above-mentioned " single cylinder dual output " can continue to carry out.
As preferably, described piston circumference is provided with the first two way seal mechanism, the obturating cup that described first two way seal mechanism is arranged in opposite directions by least one seal ring or a pair forms, the design of two way seal can prevent the mutual flowing of working fluid in the first chamber and the second chamber, thus ensures braking effect.
As preferably, described actuating device is motor, and the output shaft of motor is connected by thread transmission with described piston, and screw-driven locating effect is obvious, is conducive to the control to working fluid pressure.
As preferably, the two-way lead angle of described thread transmission is little all in equivalent friction angle, thus form a bidirectional self-locking structure, ensure when the pressure of Stress control cylinder keeps, motor does not need work, to the equivalence of working fluid in wheel brake cylinder when saving electric energy and ensure that piston two-way moves.
As preferably, a stop gear is also comprised in described Stress control cylinder, be used for the circumferential movement of limited piston, described stop gear and described the axis of the piston are to parallel, stop gear ensure that piston can not do circumferential movement in screw-driven process, further increases the control efficiency of Stress control cylinder.
As preferably, described stop gear is position-limited lever, and piston bush is located on position-limited lever, and the two ends of position-limited lever are fixed on the two ends of Stress control cylinder, and position-limited lever structure is simple, is convenient to arrange sealing mechanism thereon.
As preferably, the socket place of described piston and position-limited lever is provided with the second two way seal mechanism, described second two way seal mechanism is made up of at least one seal ring, second two way seal mechanism can prevent mutually flowing from the seam of piston and position-limited lever of working fluid in the first chamber and the second chamber, thus ensures braking effect.
The utility model compared with the existing technology has the following advantages and effect: 1, owing to being all provided with the check valve ensureing that working fluid flows from liquor storage device to wheel brake cylinder direction in the stream of inlet and liquor storage device and in the stream of liquid outlet and wheel brake cylinder, make piston all have an epitrochoidal chamber in the process advanced and retract, reach the effect of " single cylinder dual output ".The action that retracts that single cylinder dual output takes full advantage of piston saves electric energy, compared with prior art reduces the switching frequency of direction of motor rotation, significantly can improve the service life of motor; Meanwhile, owing to not needing frequently to change direction of motor rotation, when braking continuously, significantly can improve speed of response, significantly improving the braking effect of emergency brake; 2, due to the little effect all in equivalent friction angle with bidirectional self-locking of lead angle that thread transmission is two-way, external agency is not needed to apply extra pressure when the pressure of Stress control cylinder keeps, decrease pressure holding, save electric energy, be also conducive to continuous braking simultaneously; 3, owing to being provided with stop gear, prevent the circumferential movement of piston in screw-driven process, thus further reduce the loss of electric energy.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model place brake system hydraulic control unit.
Fig. 2 is integral structure schematic diagram of the present utility model.
Fig. 3 is the cutaway view of the utility model Stress control cylinder.
Fig. 4 is screw drive structure schematic diagram of the present utility model.
Operating diagram when Fig. 5 is the propelling of the utility model piston.
Fig. 6 is the operating diagram of the utility model piston when retracting.
Label declaration: liquor storage device 10, brake pedal 11, Stress control cylinder 20, cylinder body 21, first chamber 212, chamber 211, second, piston 22, endoporus 220, the first two way seal mechanism 222 of two way seal mechanism 221, second, screw mandrel 23, round platform 231, position-limited lever 24, motor 25, check valve 31-34, inlet 41,43, liquid outlet 42,44, wheel brake cylinder 50, reducing valve 60.
Detailed description of the invention
Be described in further detail the utility model below in conjunction with embodiment, following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment 1: as shown in Figures 1 to 6, the present embodiment by liquor storage device 10, brake pedal 11, Stress control cylinder 20, cylinder body 21, first chamber 212, chamber 211, second, piston 22, endoporus 220, the first two way seal mechanism 222 of two way seal mechanism 221, second, screw mandrel 23, round platform 231, position-limited lever 24, motor 25, check valve 31-34, inlet 41,43, liquid outlet 42,44, wheel brake cylinder 50, reducing valve 60 forms.Liquor storage device 10 is same as the prior art with the annexation of artificial brake operating element as brake pedal 11, wheel brake cylinder 50 communicates with liquor storage device 10 respectively by Stress control cylinder 20, reducing valve 60, in liquor storage device 10, working fluid is housed, the flow direction of working fluid is for flow out from liquor storage device 10, enter wheel brake cylinder 50 through Stress control dress cylinder 20, then flow back to liquor storage device 10 by wheel brake cylinder 50 via decompression regulating device and reducing valve 60.
Stress control cylinder 20 comprises cylinder body 21 and a piston 22, and piston 22 by the first bilateral sealing device 221 in liquid-tight manner and be slidably received within cylinder body 21.Piston 22 cylinder body 21 is divided into the first chamber 211 and the second chamber 212, first bilateral sealing device 221 maintains the first chamber 211 and the second chamber 212 is separate.First bilateral sealing device 221 can be O type circle or a pair leather cup in opposite directions, although can be installed in the groove that cylinder body 21 is made, also can be installed in the groove that piston 22 is made.
First chamber 211 is provided with on inlet 41 and liquid outlet 42, second chamber 212 and is provided with inlet 43 and liquid outlet 44.Inlet 41,43 communicates with liquor storage device 10, and liquid outlet 42,44 communicates with wheel brake cylinder 50.In the stream of inlet 41,43 and liquor storage device, and be respectively provided with a check valve 31-34 in the stream of liquid outlet 42,44 and wheel brake cylinder 50, make working fluid can only flow to wheel brake cylinder 50 from liquor storage device 10, and can not counter-flow.Piston 22 is by thread transmission as screw mandrel 23 axial motion under motor 25 drives, and motor can forward and reverse direction rotate.Screw mandrel 23 is provided with the round platform 231 of restriction screw mandrel 23 axial motion, round platform 231 top is located at the outside of motor 25.Further, screw mandrel 23 can be the output shaft of motor 25, and further, the advance of piston 22 and rollback depend on that motor 25 is rotating forward or rotating backward.
The working process of this Vehicular brake device will be introduced below.When Vehicular brake device is in normal condition, in wheel brake cylinder 50, the control of working fluid pressure (being hereafter called " brake-pressure ") is by control motor 25 and then control presssure control cylinder 20 realizes.
Along with pressing down of brake pedal 11, trigger motor 25 and drive screw mandrel 23 to rotate.When motor 25 rotates forward, screw mandrel 23 promotes piston 22 and moves to the first chamber 211, and now the first chamber 211 is epitrochoidal chamber, is full of working fluid in chamber.Along with working fluid pressure raises, check valve 32 is opened, and working fluid is pumped into brake cylinder 50 from Stress control cylinder 20, and front wheel brake cylinder and rear-wheel cylinder promote with identical fluid pressure; Meanwhile, the second chamber 212 is fluid infusion chamber, and along with piston 22 moves to the first chamber 211, produce negative pressure in the second chamber 212, check valve 33 is opened, and working fluid flow in the second chamber 212 from liquor storage device 10.When piston 22 is advanced to the bottom in the first chamber 211, motor control assembly controls motor 25 and rotates backward, now the first chamber 211 is fluid infusion chamber, second chamber 212 is epitrochoidal chamber, check valve 34 is opened, working fluid flows out from the second chamber 212, and check valve 31 is opened simultaneously, and working fluid flow in the first chamber 211 from liquor storage device 10.After working fluid flows out from Stress control cylinder 20, as known in the art, working fluid flows in wheel brake cylinder 50, and the brake-pressure in wheel brake cylinder 50 increases, and makes brake component act on front and back wheel, completes brake.The working fluid of discharging when piston 22 runs to bottom the second chamber 212 bottom the first chamber 211 enough carries out 10-15 braking, motor 25 does not need to rotate backward to reset during this period, thus save electric energy, also significantly improve the speed of response of Stress control dress cylinder 20 when repeatedly braking continuously.
Between the downstream position and liquor storage device 10 of wheel brake cylinder 50, be provided with a reducing valve 60, when discharging brake pedal 11, if wheel brake cylinder 50 is in braking mode, working fluid is just back to liquor storage device 10 from wheel brake cylinder 50 through reducing valve 60, thus release brake component.
Embodiment 2: in embodiment 1, because epitrochoidal chamber is in high pressure conditions, has opposition to piston 22, when system is in pressure Holdover mode, by being continuously applied certain driving torque to motor 25 to prevent the retracting motion of piston 25.But such layout adversely will cause the increase of power consumption.
For above-mentioned shortcoming, the present embodiment is arranged to: thread transmission and the two-way lead angle of screw mandrel 23 little all in equivalent friction angle, thus form a bidirectional self-locking structure.When discharging brake pedal 11, motor 25 stops operating, and because lead angle is little all in equivalent friction angle, piston 22 oneself is locked on screw mandrel 23, maintains the fluid pressure in epitrochoidal chamber, thus saves electric energy.
Embodiment 3: because the drive connection between the output shaft of motor 25 and piston 22 is by the screw-driven on screw mandrel 23, when screw mandrel 23 rotates, between screw thread, existence can cause piston 22 to produce the force of sliding friction of circumferential movement, and this circumferential movement is unnecessary, existing layout will cause the increase causing power consumption, also can cause the decline of the liquid-tight effect of piston 22.
For above-mentioned shortcoming, the present embodiment is arranged to: arrange a stop gear, such as offers an endoporus 220 on the piston 22, accommodates a position-limited lever 24 through endoporus 220, and position-limited lever 24 and piston 22 are axially fixed between the two ends end cap of cylinder body 21 abreast.By the second sealing arrangement 222 in liquid-tight manner and be assemblied in endoporus 220 slidably, the second sealing arrangement 222 can be O type circle or rubber cup to position-limited lever 24.In addition, stop gear can also be that the groove and piston 22 made on cylinder body 21 are made with projection that is groove fluid-tight engagement, also can be that the groove that piston 22 is made and middle cylinder body 21 are made with projection (illustrate and do not show) that is groove fluid-tight engagement.
When piston 22 moves in cylinder body 21, stop gear ensure that piston 22 circumferential movement does not occur in the process advanced and retract, and saves the consumption of electric energy further.
In addition, it should be noted that, the specific embodiment described in this specification sheets, the shape, institute's title of being named etc. of its parts and components can be different.All equivalences of doing according to structure, feature and the principle described in the utility model inventional idea or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (7)
1. Vehicular brake device, comprising:
A liquor storage device, houses working fluid in this liquor storage device;
The wheel brake cylinder of a hydraulic action, is used for acting on brake component;
An inside is provided with the Stress control cylinder of piston, and described piston is separated into the first chamber and the second chamber Stress control cylinder;
An actuating device acting on described piston;
A control setup, it can control the electric energy flowing to described actuating device, thus controls the pressure of working fluid in described wheel brake cylinder;
It is characterized in that, described first chamber and the second chamber have an inlet and a liquid outlet separately, described inlet all communicates with liquor storage device, described liquid outlet all communicates with wheel brake cylinder, is provided with the check valve ensureing that working fluid flows from liquor storage device to wheel brake cylinder direction in the stream of inlet and liquor storage device and in the stream of liquid outlet and wheel brake cylinder;
Also pressure purger is provided with between liquor storage device and wheel brake cylinder.
2. Vehicular brake device according to claim 1, is characterized in that: described piston circumference is provided with the first two way seal mechanism, and the obturating cup that described first two way seal mechanism is arranged in opposite directions by least one seal ring or a pair forms.
3. Vehicular brake device according to claim 1, is characterized in that: described actuating device is motor, and the output shaft of motor is connected by thread transmission with described piston.
4. Vehicular brake device according to claim 3, is characterized in that: the two-way lead angle of described thread transmission is all less than equivalent friction angle.
5. the Vehicular brake device according to Claims 1-4 any one, is characterized in that: also comprise a stop gear in described Stress control cylinder, is used for the circumferential movement of limited piston, and described stop gear and described the axis of the piston are to parallel.
6. Vehicular brake device according to claim 5, is characterized in that: described stop gear is position-limited lever, and piston bush is located on position-limited lever, and the two ends of position-limited lever are fixed on the two ends of Stress control cylinder.
7. Vehicular brake device according to claim 6, is characterized in that: the socket place of described piston and position-limited lever is provided with the second two way seal mechanism, and described second two way seal mechanism is made up of at least one seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872139.5U CN205149836U (en) | 2015-11-04 | 2015-11-04 | Vehicle braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872139.5U CN205149836U (en) | 2015-11-04 | 2015-11-04 | Vehicle braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205149836U true CN205149836U (en) | 2016-04-13 |
Family
ID=55685558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520872139.5U Expired - Fee Related CN205149836U (en) | 2015-11-04 | 2015-11-04 | Vehicle braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205149836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292089A (en) * | 2015-11-04 | 2016-02-03 | 浙江万向精工有限公司 | Vehicle braking device |
-
2015
- 2015-11-04 CN CN201520872139.5U patent/CN205149836U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292089A (en) * | 2015-11-04 | 2016-02-03 | 浙江万向精工有限公司 | Vehicle braking device |
| CN105292089B (en) * | 2015-11-04 | 2018-02-13 | 浙江万向精工有限公司 | Vehicular 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20211104 |