CN107161131B - Motor vehicle and braking system thereof - Google Patents
Motor vehicle and braking system thereof Download PDFInfo
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- CN107161131B CN107161131B CN201710547327.4A CN201710547327A CN107161131B CN 107161131 B CN107161131 B CN 107161131B CN 201710547327 A CN201710547327 A CN 201710547327A CN 107161131 B CN107161131 B CN 107161131B
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- cavity
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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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/12—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 fluid assistance, drive, or release the fluid being liquid
- B60T13/16—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 fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
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- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a motor vehicle and a braking system thereof, wherein the braking system comprises a first braking component, a second braking component, two groups of braking clamps and a proportional valve, the proportional valve comprises a valve body, a front cavity and a rear cavity are arranged in the valve body, a front cavity piston and a rear cavity piston are respectively arranged in the front cavity and the rear cavity, a front input port communicated with the front cavity, a front output port and a rear input port communicated with the rear cavity are arranged on the valve body, the front cavity piston and the rear cavity piston are fixedly connected, the stress area of the rear cavity piston is larger than that of the front cavity piston, and a first reset piece for resetting the piston is arranged in the valve body; the liquid output end of the first brake assembly is communicated with the front input port, one path of the liquid output end of the second brake assembly is communicated with the rear input port, the other path of the liquid output end of the second brake assembly is communicated with one group of brake calipers, and the front output port of the second brake assembly is communicated with the other group of brake calipers; through the structure, the two groups of brake oil ways can be completely separated, so that at least one group of brakes is ensured to be available, the reliability and the safety of the whole brake system are improved, and the safety of a rider is ensured.
Description
Technical Field
The invention relates to the technical field of motor vehicles, in particular to a motor vehicle and a brake system thereof.
Background
The hydraulic disc brake system, also called as oil brake or oil disc brake, oil disc, is a brake device which uses hydraulic oil to transmit the power of a brake handle to a brake caliper and then uses the friction disc of the brake caliper to realize the braking effect, and has been widely applied to motor vehicles such as motorcycles, automobiles and even bicycles due to simple structure and good braking effect.
In the prior art, a hydraulic disc brake system generally comprises a brake pump, an oil cup, a connecting pipeline and a brake caliper. The brake mechanism, such as manual brake or the brake liquid in the brake pump pressure system driven by the foot brake, drives the brake caliper to move so as to realize the braking function, and once the connecting pipeline of the hydraulic disc brake system with the structure leaks, the whole brake system can be disabled, potential safety hazards exist, and the safety hazard to a rider is easily caused.
Therefore, how to improve the hydraulic disc brake system, improve the reliability and the safety of the hydraulic disc brake system, and protect the safety of riders is an important technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a motor vehicle and a brake system thereof, so as to achieve the purposes of improving the reliability and safety thereof and protecting the safety of a rider.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a braking system, includes first brake subassembly, second brake subassembly, first brake caliper, second brake caliper and proportional valve, the proportional valve includes the valve body, be provided with the front chamber and the back chamber of mutual isolation in the valve body, be provided with the front chamber piston in the front chamber, be provided with the back chamber piston in the back chamber, be provided with on the valve body with front input port, front delivery outlet and with the back input port of back chamber intercommunication, the front chamber piston with back chamber piston rigid connection and the area of atress of back chamber piston is greater than the area of atress of front chamber piston, back input port is used for the input liquid drive back chamber piston drives the front chamber piston will the liquid in the front chamber is passed through front delivery outlet extrusion, be provided with in the valve body and be used for making front chamber piston and back chamber piston reset the first reset piece.
The liquid output end of the first brake assembly is communicated with the front input port, the liquid output end of the second brake assembly is divided into two paths, one path is communicated with the rear input port, the other path is communicated with the first brake caliper, and the front output port is communicated with the second brake caliper.
Preferably, the front cavity piston divides the front cavity into a front input cavity and a front output cavity, the front input port is communicated with the front input cavity, the front output port is communicated with the front output cavity, and the front input cavity is communicated with the front output cavity through a backflow channel.
Preferably, the front cavity piston is provided with a limiting rod extending into the front output cavity, and the first reset piece is arranged between the limiting rod and the valve body.
Preferably, one of the first brake assembly and the second brake assembly is a hand brake device, and the other is a foot brake device.
Preferably, the first brake assembly or the second brake assembly includes a transfer pump, an oil cup, and an operating mechanism for driving the transfer pump.
Preferably, the delivery pump comprises a pump body and a pump body piston which is arranged in the pump body and is in sliding fit with the pump body, a first end of the pump body piston is connected with a push rod which is arranged on the pump body in a sliding mode, a pumping cavity is formed between a second end of the pump body and the pump body, and a suction inlet and a pumping port which are communicated with the pumping cavity are formed in the pump body.
Preferably, a second reset element is arranged between the second end of the pump body piston and the pump body.
Preferably, the pump body is further provided with a balancing port, the balancing port and the suction port are arranged side by side and are communicated with the output port of the oil cup, and the balancing port and the suction port are respectively arranged at two ends of the pump body piston.
A motor vehicle comprising a vehicle body and a braking system disposed on the vehicle body, the braking system being as claimed in any one of the preceding claims.
According to the technical scheme, the brake system comprises a first brake assembly, a second brake assembly, a first brake caliper, a second brake caliper and a proportional valve, wherein the proportional valve comprises a valve body, a front cavity and a rear cavity which are isolated from each other are arranged in the valve body, a front cavity piston is arranged in the front cavity, a rear cavity piston is arranged in the rear cavity, a front input port communicated with the front cavity, a front output port and a rear input port communicated with the rear cavity are arranged on the valve body, the front cavity piston is rigidly connected with the rear cavity piston, the stress area of the rear cavity piston is larger than that of the front cavity piston, so that the pressure of the front cavity piston and the rear cavity piston can be changed, the stress area of the rear cavity piston can be smaller than that of the front cavity piston, or the pressure of the front cavity piston and the rear cavity piston can be changed in other modes as required, so as to adjust the output proportion, and the rear input port is used for inputting liquid to drive the rear cavity piston to drive the liquid in the front cavity piston to be extruded out through the front output port, and a first reset piece is arranged in the valve body; the liquid output end of the first brake assembly is communicated with the front input port, the liquid output end of the second brake assembly is divided into two paths, one path is communicated with the rear input port, the other path is communicated with the first brake caliper, and the front output port is communicated with the second brake caliper;
when the hydraulic oil pump is used, hydraulic oil pumped out of the first brake assembly enters the front cavity through the front input port and flows to the first brake caliper from the front output port to control the first brake caliper to brake; when the second brake assembly is operated, two paths of hydraulic oil flow directly to the second brake caliper to brake, the other path of hydraulic oil flow directly to the rear input port enters the rear cavity of the valve body, the rear cavity piston is driven to drive the front cavity piston to compress the front cavity, hydraulic oil in the front cavity is extruded from the front output port, and therefore the first brake caliper and the second brake caliper are braked simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a brake system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a proportional valve in a brake system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a transfer pump of a hand brake device in a brake system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a transfer pump of a foot brake device in a brake system according to an embodiment of the present invention.
Detailed Description
The invention provides a motor vehicle and a braking system thereof, which aim to improve the reliability and the safety of the motor vehicle and protect the safety of riders.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a braking system according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a proportional valve in the braking system according to an embodiment of the present invention.
The invention provides a brake system which comprises a first brake assembly 1, a second brake assembly 2, a first brake caliper 4, a second brake caliper 5 and a proportional valve 3.
The proportional valve 3 comprises a valve body, a front cavity and a rear cavity which are isolated from each other are arranged in the valve body, a front cavity piston 35 is arranged in the front cavity, a rear cavity piston 32 is arranged in the rear cavity, a front input port 34 communicated with the front cavity, a front output port 39 and a rear input port 31 communicated with the rear cavity are arranged on the valve body, the front cavity piston 35 is rigidly connected with the rear cavity piston 32, the stress area of the rear cavity piston 32 is larger than that of the front cavity piston 35, so that the pressure of the front cavity and the rear cavity can be changed, of course, the stress area of the rear cavity piston 32 can be smaller than that of the front cavity piston 35 as required, or the pressure of the front cavity and the rear cavity can be changed in other modes, so that the output proportion can be adjusted, the rear input port 31 is used for inputting liquid to drive the rear cavity piston 32 to drive the front cavity piston 35 to press out the liquid in the front cavity through the front output port 39, and a first reset piece 38 for resetting the front cavity piston 35 and the rear cavity piston 32 is arranged in the valve body; the liquid output end of the first brake assembly 1 is communicated with the front input port 34, the liquid output end of the second brake assembly 2 is divided into two paths, one path is communicated with the rear input port 31, the other path is communicated with the first brake caliper 4, and the front output port 39 is communicated with the second brake caliper 5.
Compared with the prior art, in the braking system provided by the invention, when in use, hydraulic oil pumped out by the first braking component 1 enters the front cavity through the front input port 34 and flows to the first braking clamp 4 from the front output port 39 to control the first braking clamp 4 to brake; when the second brake assembly 2 is operated, two paths of hydraulic oil flow directly to the second brake caliper 5 for braking, and the other path of hydraulic oil flows into the rear cavity of the valve body through the rear input port 31, the rear cavity piston 32 is driven to drive the front cavity piston 35 to compress the front cavity, and hydraulic oil in the front cavity is extruded out of the front output port 39, so that the simultaneous braking of the first brake caliper 4 and the second brake caliper 5 is realized, and because the stress area of the rear cavity piston 32 is larger than that of the front cavity piston 35, the hydraulic oil output ratio of the front cavity and the rear cavity can be adjusted so as to distinguish the braking forces of the two brake calipers, so that the requirements are met, the safety is improved, the two groups of brake oil paths can be completely separated through the structure, at least one group of brake is ensured to be available, the reliability and the safety of the whole brake system are improved, and the safety of a rider is ensured.
When the rear cavity piston 32 drives the front cavity piston 35 to push out hydraulic oil, the hydraulic oil may flow back from the front input port 34, so that the output hydraulic oil is reduced, and thus the problems of slow braking speed, insufficient braking force and the like are caused.
The first restoring member 38 is used for restoring the front cavity piston 35 and the rear cavity piston 32, so long as the two pistons can be restored in time, for example, the first restoring member 38 may be disposed in the front cavity or the rear cavity, or elastic members may be disposed in the front cavity and the rear cavity simultaneously as the first restoring member 38, as shown in fig. 2, and in the embodiment of the present invention, the first restoring member 38 includes a spring disposed in the front cavity, and the spring is not limited to the compression spring shown in the drawing, but may also be a disc spring, a torsion spring, or the like.
Further optimizing the above technical solution, in the embodiment of the present invention, the front cavity piston 35 is provided with a stop lever extending into the front output cavity 36, and the first reset member 38 is disposed between the stop lever and the valve body, where the stop lever not only can play a role in fixing the first reset member 38, but also can adjust the stress area of the front cavity piston 35 by adjusting the cross-sectional area of the stop lever during manufacturing, thereby adjusting the output ratio of the front cavity and the rear cavity.
The first brake assembly 1 and the second brake assembly 2 may be hand brake devices, or one may be hand brake device, and the other may be foot brake device, and in the embodiment of the present invention, as shown in fig. 1, a brake system in which the first brake assembly 1 is a hand brake device and the second brake assembly 2 is a foot brake device is provided.
The first brake assembly 1 and the second brake assembly 2 are used for receiving the operation of a rider and outputting hydraulic oil to a brake caliper, and therefore, in the embodiment of the present invention, the first brake assembly 1 or the second brake assembly 2 should include a delivery pump, an oil cup and an operating mechanism for driving the delivery pump, wherein the oil cup is used for containing hydraulic oil, and may be integrated with the delivery pump, or may be in a split structure, and the delivery pump adopts a structure similar to a plunger pump, and absorbs oil from the oil cup and outputs the oil by the operation of the rider on the operating mechanism, such as a brake handle and a brake pedal.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a transfer pump of a hand brake device in a brake system according to an embodiment of the present invention, the transfer pump of the hand brake device includes a pump body 101 and a pump body piston 103 disposed in the pump body 101 and slidably engaged with the pump body 101, an oil cup 111 and the pump body 101 are integrally formed, a first end of the pump body piston 103 is connected with a push rod 104 slidably disposed on the pump body 101, the push rod 104 extends out of the pump body 101 and is hinged with a brake handle (not shown in fig. 3, refer to fig. 1), a pumping chamber is formed between a second end and the pump body 101, and a suction inlet 106 and a pumping port 107 are disposed on the pump body 101 and are communicated with the pumping chamber.
Referring next to fig. 4, fig. 4 is a schematic structural diagram of a transfer pump of a foot brake device in a brake system according to an embodiment of the present invention, where the transfer pump of the foot brake device includes a pump body 211 and a pump body piston 213 disposed in the pump body 211 and slidably engaged with the pump body 211, the oil cup 22 and the pump body 211 adopt a split structure, a first end of the pump body piston 213 is connected with a push rod 214 slidably disposed on the pump body 211, the push rod 214 extends out of the pump body 211 and is hinged to a brake pedal (not shown in the drawing) at a fixed shaft 23, a pumping cavity is formed between a second end and the pump body 211, and a suction inlet 216 and a pumping port 217 are disposed on the pump body 211 and are communicated with the pumping cavity.
When the two-wheel motorcycle is used, the two-wheel motorcycle is taken as an example, the requirements on braking force and braking speed are not high in a non-emergency state, the front and rear wheels can be braked simultaneously by operating the hand brake device and the front and rear brake pliers only in an emergency state, when one of the hand brake hydraulic pipeline and the foot brake hydraulic pipeline is damaged, a rider can also brake by means of the other hand brake hydraulic pipeline, and the safety is high.
Further optimizing the above technical solution, in the embodiment of the present invention, a second reset element 102 (212) is disposed between the second end of the pump body piston 103 (213) and the pump body 101 (211).
When the pump body piston 103 (213) moves, the volumes at both sides of the piston change, so that the pressures at both sides also change, and the movement of the piston is difficult to easily cause, therefore, in the embodiment of the invention, the pump body 101 (211) is further provided with the balance port 105 (215), the balance port 105 (215) and the suction port 106 (216) are arranged side by side and are communicated with the output port of the oil cup 111 (22), and the balance port 105 (215) and the suction port 106 (216) are respectively arranged at both ends of the pump body piston 103 (213).
The embodiment of the invention also provides a motor vehicle, which comprises a vehicle body and a brake system arranged on the vehicle body, wherein the brake system is the brake system described in any one of the above.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The brake system is characterized by comprising a first brake assembly, a second brake assembly, a first brake caliper, a second brake caliper and a proportional valve, wherein the proportional valve comprises a valve body, a front cavity and a rear cavity which are isolated from each other are arranged in the valve body, a front cavity piston is arranged in the front cavity, a rear cavity piston is arranged in the rear cavity, a front input port communicated with the front cavity, a front output port and a rear input port communicated with the rear cavity are arranged on the valve body, the front cavity piston is rigidly connected with the rear cavity piston, the stress area of the rear cavity piston is larger than that of the front cavity piston, the rear input port is used for inputting liquid to drive the rear cavity piston to drive the front cavity piston to extrude the liquid in the front cavity through the front output port, and a first reset piece for resetting the front cavity piston and the rear cavity piston is arranged in the valve body;
the liquid output end of the first brake assembly is communicated with the front input port, the liquid output end of the second brake assembly is divided into two paths, one path is communicated with the rear input port, the other path is communicated with the first brake caliper, and the front output port is communicated with the second brake caliper;
the front cavity piston divides the front cavity into a front input cavity and a front output cavity, the front input port is communicated with the front input cavity, the front output port is communicated with the front output cavity through a backflow channel, a limiting rod extending into the front output cavity is arranged on the front cavity piston, a first resetting piece is arranged between the limiting rod and the valve body, and the limiting rod is used for fixing the first resetting piece and the limiting rod and adjusting the stressed area of the front cavity piston by adjusting the cross section area of the limiting rod during manufacturing, so that the front cavity output proportion and the rear cavity output proportion are adjusted.
2. The brake system of claim 1, wherein one of the first brake assembly and the second brake assembly is a hand brake device and the other is a foot brake device.
3. The brake system of claim 1, wherein the first brake assembly or the second brake assembly includes a transfer pump, an oil cup, and an operating mechanism for driving the transfer pump.
4. A brake system according to claim 3, wherein the transfer pump comprises a pump body and a pump body piston arranged in the pump body and in sliding fit with the pump body, a first end of the pump body piston is connected with a push rod arranged on the pump body in a sliding manner, a pumping cavity is formed between a second end of the pump body and the pump body, and a suction inlet and a pumping port which are communicated with the pumping cavity are arranged on the pump body.
5. The brake system of claim 4, wherein a second reset member is disposed between the second end of the pump body piston and the pump body.
6. The brake system of claim 4, wherein the pump body is further provided with a balancing port, the balancing port is arranged side by side with the suction port and is communicated with the output port of the oil cup, and the balancing port and the suction port are respectively arranged at two ends of the pump body piston.
7. A motor vehicle comprising a vehicle body and a brake system provided on the vehicle body, wherein the brake system is as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710547327.4A CN107161131B (en) | 2017-07-06 | 2017-07-06 | Motor vehicle and braking system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710547327.4A CN107161131B (en) | 2017-07-06 | 2017-07-06 | Motor vehicle and braking system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107161131A CN107161131A (en) | 2017-09-15 |
| CN107161131B true CN107161131B (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710547327.4A Active CN107161131B (en) | 2017-07-06 | 2017-07-06 | Motor vehicle and braking system thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107161131B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866750A (en) * | 2017-12-04 | 2019-06-11 | 长春天火汽车制造有限公司 | A kind of all-terrain vehicle brake system |
| CN108749988B (en) * | 2018-07-05 | 2024-04-30 | 重庆科朗机动车制动器有限公司 | Front-rear linkage hydraulic disc type braking system of motorcycle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546319Y (en) * | 2002-04-29 | 2003-04-23 | 桐乡市亚力实业公司 | Improved hydraulic brake antilocking device for motorcycle |
| CN201448137U (en) * | 2009-08-07 | 2010-05-05 | 刘喜田 | Actuating cylinder of exhaust brake valve of automobile engine and exhaust brake valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4380512B2 (en) * | 2004-11-30 | 2009-12-09 | 日産自動車株式会社 | Brake device for vehicle |
| CN100503326C (en) * | 2006-06-12 | 2009-06-24 | 玉环凯凌集团有限公司 | Interlocked front and back hydraulic valves |
| CN201095361Y (en) * | 2007-08-30 | 2008-08-06 | 林永健 | Shunt valve for brake system |
| CN102431532B (en) * | 2011-11-18 | 2014-07-02 | 宁波科达制动器制造有限公司 | Two-dragging-three type front-rear linkage brake |
| CN102424044B (en) * | 2011-11-18 | 2014-10-29 | 宁波科达制动器制造有限公司 | One-driving-four front-to-back linkage brake pump |
| CN206968641U (en) * | 2017-07-06 | 2018-02-06 | 浙江春风动力股份有限公司 | A kind of motor vehicle and its brake system |
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2017
- 2017-07-06 CN CN201710547327.4A patent/CN107161131B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546319Y (en) * | 2002-04-29 | 2003-04-23 | 桐乡市亚力实业公司 | Improved hydraulic brake antilocking device for motorcycle |
| CN201448137U (en) * | 2009-08-07 | 2010-05-05 | 刘喜田 | Actuating cylinder of exhaust brake valve of automobile engine and exhaust brake valve |
Also Published As
| Publication number | Publication date |
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| CN107161131A (en) | 2017-09-15 |
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