CN211223744U - CBS linkage structure and motorcycle and electric vehicle adopting same - Google Patents
CBS linkage structure and motorcycle and electric vehicle adopting same Download PDFInfo
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- CN211223744U CN211223744U CN201921974399.8U CN201921974399U CN211223744U CN 211223744 U CN211223744 U CN 211223744U CN 201921974399 U CN201921974399 U CN 201921974399U CN 211223744 U CN211223744 U CN 211223744U
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Abstract
The utility model relates to a vehicle control technical field especially relates to a CBS linkage structure and adopt motorcycle, electric motor car of this structure. The CBS linkage structure comprises a valve body, wherein a first oil duct, a second oil duct and a plunger cavity are arranged in the valve body; the plunger cavity is communicated with the first oil duct and the second oil duct; the plunger cavity divides the first oil duct into an upper oil duct and a lower oil duct, a plunger is arranged in the plunger cavity, and an auxiliary oil duct and a pressure reducing oil duct are divided on a valve body at the bottom of the upper oil duct; a one-way oil seal is arranged on the plunger piston in the plunger piston cavity, and a reset elastic part is arranged in the plunger piston cavity outside the plunger piston; the plunger is provided with a first position and a second position under the coordination of oil pressure in the second oil duct and the reset elastic piece; when the plunger is in the first position, the pressure reducing oil duct is communicated with the plunger cavity and the lower oil duct on the inner side of the one-way oil seal; when the plunger is in the second position, the one-way oil seal blocks the pressure reducing oil passage. The CBS linkage structure is convenient to use and excellent in linkage braking effect.
Description
Technical Field
The utility model relates to a vehicle control technical field especially relates to a CBS linkage structure and adopt motorcycle, electric motor car of this structure.
Background
The braking system is the most critical active safety device for ensuring the safe running of the motorcycle, so the basic requirements of the braking system of the motorcycle are as follows: no matter the motorcycle is under any speed, load, high and low adhesion coefficient road surface and weather conditions, the driver can realize the smooth and rapid deceleration of the motorcycle through simple operation in the braking process until the motorcycle is stopped.
Most of the existing two-wheeled motorcycles adopt independent braking systems for front wheels and rear wheels, and the motorcycles provided with the braking systems can reasonably distribute the operating force of hands and feet to obtain reasonable deceleration in the braking process, so that the front tires and the rear tires fully utilize the adhesion coefficient of the road surface, but in actual life, a user can hardly achieve the simultaneous braking and the reasonable distribution of the front wheels and the rear wheels. For motorcycles, it is more important to distribute the braking force according to the load condition of the vehicle, the adhesion coefficient of the road surface, the tire wear condition of the vehicle, and other comprehensive factors during the braking process.
Under the premise of not changing the structure of the front brake and the rear brake of the original vehicle and maximally reducing the cost, the front wheel and the rear wheel can be synchronously and jointly braked during braking, and the technical problem to be solved by technical personnel in the field is solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a remedy prior art not enough, provide a CBS linkage structure and adopt motorcycle, electric motor car of this structure, this CBS linkage structure can ensure shortest braking distance and stability under the condition of not changing former car front and back stopper structure, has solved the problem that exists among the prior art.
The utility model discloses a realize through following technical scheme:
a CBS linkage structure comprises a valve body, wherein a first oil duct, a second oil duct and a plunger cavity are arranged in the valve body;
the plunger cavity is communicated with the first oil duct and the second oil duct; the first oil duct is divided into an upper oil duct and a lower oil duct by the plunger cavity, the plunger is arranged in the plunger cavity, and the valve body at the bottom of the upper oil duct is divided into an auxiliary oil duct and a pressure reduction oil duct; the plunger piston in the plunger piston cavity is provided with a one-way oil seal, and the plunger piston cavity outside the plunger piston is provided with a reset elastic part;
the plunger is provided with a first position and a second position under the coordination of oil pressure in the second oil duct and the reset elastic piece; when the plunger is in the first position, the pressure reducing oil duct is communicated with the plunger cavity and the lower oil duct on the inner side of the one-way oil seal; when the plunger is in the second position, the one-way oil seal plugs the pressure reduction oil duct, and the auxiliary oil duct is communicated with the plunger cavity outside the one-way oil seal and is further communicated with the plunger cavity inside the one-way oil seal and the lower oil duct through the one-way oil seal.
The first oil duct is used for connecting the front master cylinder and the front branch pump; the second oil passage is used for connecting the rear master cylinder and the rear branch pump.
The plunger cavity comprises a first plunger cavity matched with the outer side wall of the plunger and a limiting cavity arranged in the middle of the first plunger cavity; a first boss is arranged at the rear part of the plunger, the reset elastic part is arranged between the first boss and the inner side wall at the rear end of the limiting cavity, a second boss is arranged at the front part of the plunger, and the second boss is abutted against the inner side wall at the front end of the limiting cavity under the action of the reset elastic part; and a third boss is arranged on the outer side of the second boss, and the one-way oil seal is arranged on the outer side wall of the plunger between the first boss and the third boss.
The plunger cavity (3) comprises a first plunger cavity (3.1) and a second plunger cavity (3.3), the front part of the plunger is matched with the first plunger cavity, and the second plunger cavity is arranged corresponding to the first oil duct; an opening is formed in the rear side wall of the valve body corresponding to the second plunger cavity, a plugging piece is arranged on the opening in a sealing mode, and a reset elastic piece is arranged between the plugging piece and the rear end face of the plunger; the valve body outside the first oil duct is also provided with an exhaust hole communicated with the second plunger cavity, and an exhaust part is arranged on the exhaust hole in a matched manner; a second boss (5) is arranged on the plunger and abuts against the inner side wall of the front end of the second plunger cavity under the action of the reset elastic piece; the one-way oil seal is arranged on the plunger in the second plunger cavity.
The plugging piece is a plug; the exhaust piece is an exhaust screw.
A first oil seal is arranged in the first plunger cavity.
The reset elastic piece is a reset spring.
And a first oil seal and a second oil seal are respectively arranged between the first plunger piston cavity and the plunger piston on two sides of the limiting cavity.
The first oil seal and the second oil seal are respectively arranged on the inner side wall of the first plunger cavity; or the first oil seal and the second oil seal are respectively arranged on the outer side wall of the plunger.
A first oil seal is arranged between the front part of the plunger and the inner wall of the plunger cavity, and the first oil seal is arranged on the inner wall of the plunger cavity; and a second oil seal is arranged between the rear part of the plunger and the plunger cavity and arranged on the outer side wall of the plunger.
The valve body is of a split structure, and the valve body of the split structure is fixed through a threaded fastener.
The valve body of split type structure includes first valve body and second valve body, and first valve body and second valve body link firmly through the bolt. The second oil duct and the front part of the plunger cavity are arranged on the first valve body; the middle part and the rear part of the first oil duct and the plunger cavity are arranged on the second valve body.
The inner diameter of the limiting cavity is larger than that of the first plunger cavity. The structure is convenient for the arrangement of the one-way oil seal and the return spring.
The reset spring is sleeved on the plunger.
The front end of the reset spring is abutted against the rear side of the first boss, and the rear end of the reset spring is fixedly connected with the inner side wall of the rear end of the limiting cavity.
The one-way oil seal is a leather cup.
The leather cup is a plunger leather cup.
The first oil seal and the second oil seal are both bidirectional oil seals.
The pressure reducing oil duct is an oil duct with the inner diameter of 0.1-0.3 mm.
A motorcycle is provided with the CBS linkage structure.
The motorcycle is provided with an ABS.
An electric vehicle is provided with the CBS linkage structure.
The utility model has the advantages that:
the CBS linkage structure can be directly connected in series to the front brake oil pipe and the rear brake oil pipe, and the front brake structure and the rear brake structure of an original vehicle do not need to be changed. The opening or the plugging of the pressure reducing oil duct by the one-way oil seal on the plunger is realized through the change of the position of the plunger, so that the function of a front wheel pump connected with the first oil duct is realized, and the braking of a front wheel is controlled, or the function of a rear wheel pump connected with the second oil duct is realized, and the linkage braking of the front wheel and the rear wheel is controlled. This CBS linkage structural design is scientific, reasonable, compares current CBS linkage system, need not to install a plurality of oil pipes, also does not have special requirement to front wheel brake caliper, has reduced manufacturing cost, makes things convenient for batch production and the upgrading installation of vehicle in use, and braking distance is short, and the braking is stable.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of the plunger of FIG. 1 in a second position;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 4 is a schematic structural diagram of embodiment 3 of the present invention;
fig. 5 is a schematic structural diagram of embodiment 4 of the present invention;
fig. 6 is a schematic structural diagram of embodiment 5 of the present invention;
fig. 7 is a schematic structural view of embodiment 6 of the present invention.
In the figure, 1 first oil duct, 1.1 upper oil duct, 1.2 lower oil duct, 1.11 auxiliary oil duct, 1.12 pressure reducing oil duct, 2 second oil duct, 3 plunger cavity, 3.1 first plunger cavity, 3.2 limiting cavity, 3.3 second plunger cavity, 4 plunger, 5 second boss, 6 third boss, 7 first boss, 8 reset spring, 9 leather cup, 10 first oil seal, 11 second oil seal, 12 front brake master pump, 13 rear brake master pump, 14 front brake disc, 15 rear brake disc, 16ABS, 17 first valve body, 18 second valve body, 19 plug and 20 exhaust screw.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
Example 1
As shown in fig. 1-2, a CBS linkage pump body of a CBS linkage structure includes a valve body 1, the valve body is connected in series between a front brake oil pipe and a rear brake oil pipe, a first oil passage 2, a second oil passage 3 and a plunger cavity 3 are arranged in the valve body, the first oil passage, the second oil passage and the plunger cavity are communicated, and the plunger cavity 3 is arranged in the middle of the first oil passage and is perpendicular to the second oil passage; the plunger cavity comprises a first plunger cavity 3.1 and a limiting cavity 3.2 arranged in the middle of the first plunger cavity, the limiting cavity 3.2 divides the first oil duct into an upper oil duct 1.1 and a lower oil duct 1.2, a valve body at the bottom of the upper oil duct 1.1 is provided with two oil ducts which are an auxiliary oil duct 1.11 and a pressure reducing oil duct 1.12 respectively, and the inner diameter of the pressure reducing oil duct is 0.1mm-0.5 mm; the upper oil duct 1.1 is communicated with the limiting cavity 3.2 through an auxiliary oil duct 1.11 and a pressure reducing oil duct 1.12. A plunger 4 is arranged in the plunger cavity 3 and is matched with the first plunger cavity; be equipped with second boss 5 in proper order backward in the past on the plunger of spacing intracavity, third boss 6 and first boss 7, be equipped with the reset spring 8 that the plunger outside was located to the cover between first boss and spacing chamber rear end inside wall, under the reset spring effect, second boss 5 and spacing chamber front end inside wall looks butt, the plunger outside between first boss and third boss is equipped with a one-way oil blanket, this one-way oil blanket is a leather cup 9, the leather cup realizes one-way seal with spacing intracavity lateral wall, the plunger is in the initial position this moment, first position promptly, when this position, the leather cup is in the outside of decompression oil duct, make the oil duct be linked together through the spacing chamber of decompression oil duct and leather cup inboard. The oil pressure in the second oil duct is increased to a certain degree, the left end of the plunger is pushed to move towards the first plunger cavity, the reset spring is compressed, the leather cup blocks the pressure reduction oil duct, the oil pressure in the first oil duct enters the limiting cavity on the outer side of the leather cup through the auxiliary oil duct and the pressure reduction oil duct respectively and then enters the lower oil duct through the leather cup and the limiting cavity on the inner side of the leather cup, and at the moment, the oil pressure in the first oil duct and the oil pressure in the second oil duct respectively act on the branch pumps connected with the first oil duct.
And a first oil seal 10 and a second oil seal 11 are respectively arranged in the first plunger piston cavities on two sides of the limiting cavity, and the first oil seal and the second oil seal are both two-way sealing rings, so that the sealing of oil in different oil ducts in the moving process of the plunger piston is ensured. And the first oil seal and the second oil seal are respectively arranged in grooves of the inner side walls of the first plunger cavity 3.1 at two sides of the limiting cavity. So set up, can reduce the damage to the used sealing washer of two-way oil blanket in the plunger installation to the at utmost.
When the brake device is used, the inlet of the first oil duct 2 is connected with the front wheel brake front master cylinder through the front brake oil pipe, the outlet of the first oil duct 2 is connected with the front wheel brake front sub-pump through the front brake oil pipe, the inlet of the second oil duct 3 is connected with the rear wheel brake rear master cylinder through the rear brake oil pipe, and the outlet of the second oil duct 3 is connected with the rear wheel brake rear sub-pump through the rear brake oil pipe. When the front brake is used, the pressure of a front main pump enters the upper oil duct, the pressure reduction oil duct 1.12, the limiting cavity on the inner side of the leather cup and the lower oil duct from a front brake oil pipe, and the front branch pump is pressurized through the front brake oil pipe connected with the outlet of the lower oil duct to brake; when the rear brake is used, the rear master cylinder is pressurized and enters the second oil duct 3 through the rear brake oil pipe to pressurize the rear wheel cylinder to generate brake force, meanwhile, the oil pressure in the second oil duct pushes the plunger 4 to move rightwards, the leather cup 9 passes through the pressure reduction oil duct 1.12 and blocks the pressure reduction oil duct 1.12 to pressurize the front wheel cylinder to brake, and linkage brake control is completed. In a linkage state, pressure is increased on a front master pump, brake fluid in an upper oil duct can enter a limiting cavity 3.2 on the outer side of a leather cup through an auxiliary oil duct 1.11 and a pressure reduction oil duct 1.12, then continuously enters a lower oil duct 1.2 through the leather cup 9, pressure is continuously applied on a front wheel, and a front wheel obtains larger braking force.
In the above embodiment 1, the fixing positions of the first oil seal 10 and the second oil seal 11 may be set in the groove on the outer side wall of the plunger, or the first oil seal may be set on the inner side wall of the first plunger cavity and the second oil seal may be set on the outer side wall of the plunger.
Example 2
As shown in fig. 3, the brake system of the motorcycle adopting the CBS linkage structure of embodiment 1 includes a CBS linkage structure, a front master brake pump 12, a front wheel brake cylinder, a rear master brake pump 13 and a rear wheel brake cylinder, which are connected to the CBS linkage structure, the front wheel brake cylinder being connected to a front brake disc 14 for braking a front wheel, and the rear wheel brake cylinder being connected to a rear brake disc 15 for braking a rear wheel; the CBS linkage structure comprises a valve body 1, wherein the valve body is connected between a front brake oil pipe and a rear brake oil pipe in series, a first oil duct 2, a second oil duct 3 and a plunger cavity 3 are arranged in the valve body, the first oil duct, the second oil duct and the plunger cavity are communicated, and the plunger cavity 3 is arranged in the middle of the first oil duct and is vertical to the second oil duct; the plunger cavity comprises a first plunger cavity 3.1 and a limiting cavity 3.2 arranged in the middle of the first plunger cavity, the limiting cavity 3.2 divides the first oil duct into an upper oil duct 1.1 and a lower oil duct 1.2, a valve body at the bottom of the upper oil duct 1.1 is provided with two oil ducts which are an auxiliary oil duct 1.11 and a pressure reducing oil duct 1.12 respectively, and the inner diameter of the pressure reducing oil duct is 0.1 mm; the upper oil duct 1.1 is communicated with the limiting cavity 3.2 through an auxiliary oil duct 1.11 and a pressure reducing oil duct 1.12. A plunger 4 is arranged in the plunger cavity 3 and is matched with the first plunger cavity; be equipped with second boss 5 in proper order backward in the past on the plunger of spacing intracavity, third boss 6 and first boss 7, be equipped with the reset spring 8 that the plunger outside was located to the cover between first boss and spacing chamber rear end inside wall, under the reset spring effect, second boss 5 and spacing chamber front end inside wall looks butt, the plunger outside between first boss and third boss is equipped with a one-way oil blanket, this one-way oil blanket is a leather cup 9, the leather cup realizes one-way seal with spacing intracavity lateral wall, the plunger is in the initial position this moment, first position promptly, when this position, the leather cup is in the outside of decompression oil duct, make the oil duct be linked together through the spacing chamber of decompression oil duct and leather cup inboard. After the oil pressure in the second oil duct is increased, the left end of the plunger is pushed to move towards the first plunger cavity, the reset spring is compressed, the leather cup blocks the pressure reduction oil duct, brake fluid in the first oil duct enters the limiting cavity on the outer side of the leather cup through the auxiliary oil duct and the pressure reduction oil duct respectively and then enters the lower oil duct through the limiting cavity on the inner side of the leather cup through the leather cup, at the moment, the oil pressure in the first oil duct and the oil pressure in the second oil duct respectively act on the branch pumps connected with the first oil duct and the second oil duct, and then the front brake disc and the rear brake disc brake the front wheel and the rear wheel together.
And a first oil seal 10 and a second oil seal 11 are respectively arranged in the first plunger piston cavities on two sides of the limiting cavity, and the first oil seal and the second oil seal are both two-way sealing rings, so that the sealing of oil in different oil ducts in the moving process of the plunger piston is ensured. The first oil seal is arranged in a groove in the inner side wall of the first plunger cavity 3.1 on the front side of the limiting cavity, and the second oil seal is arranged in a groove in the outer side wall of the rear portion of the plunger.
During the working process, when the front brake is used, the pressure of a front brake master cylinder 12 enters an upper oil channel of a first oil channel through a front brake oil pipe, and is pressurized to a front wheel through a pressure reduction oil channel 1.12, a limiting cavity and a lower oil channel on the inner side of a leather cup, so that a front brake disc brakes the front wheel, when the rear brake is used, the rear brake master cylinder is pressurized to a rear wheel through a rear brake oil pipe and a second oil channel 3, so that the rear brake disc brakes the rear wheel, meanwhile, the oil pressure in the second oil channel pushes a plunger 4 to move rightwards, a return spring compresses, the leather cup 9 is compressed through the pressure reduction oil channel 1.12, the pressure reduction oil channel 1.12 is closed, the front wheel is continuously pressurized, and linkage brake control is completed. In a linkage state, the front brake master cylinder continuously increases the pressure, brake fluid in the upper oil duct can pass through the auxiliary oil duct 1.11 and the pressure reduction oil duct 1.12 and enter one side of the limiting cavity 3.2 directly communicated with the lower oil duct through the leather cup 9, pressure is continuously applied to the front wheel cylinder, and the front wheel obtains larger braking force. After the brake is released and the pressure is reduced, the plunger is pushed by the return spring to reset, the leather cup returns to the original position, the pressure reduction channel is opened, and the brake pressure disappears.
Example 3
As shown in fig. 4, the motorcycle brake system is the same as the motorcycle brake system of embodiment 2, except that an ABS anti-lock system 16 is installed, the front brake master cylinder is connected to the first oil passage inlet of the CBS linkage structure valve body through a pipeline, the rear brake master cylinder is connected to the second oil passage inlet of the CBS linkage structure valve body through a pipeline, the first oil passage outlet of the CBS linkage structure valve body is connected to the front wheel oil inlet of the ABS anti-lock system through a pipeline, the front wheel oil outlet of the ABS anti-lock system is connected to the front wheel sub-pump through a pipeline, the second oil passage outlet of the CBS linkage structure valve body is connected to the rear wheel oil inlet of the ABS anti-lock system through a pipeline, and the rear wheel oil outlet of the ABS anti-lock system is connected to the rear wheel.
The use process is the same as that of embodiment 1 or 2, and the ABS is installed, so that the motorcycle brake system avoids wheel locking in linkage braking and is safer.
The CBS linkage structure in each of the above embodiments is a split structure, as shown in fig. 1-2, the CBS linkage structure includes a first valve body 17 and a second valve body 18, and the first valve body and the second valve body are fixedly connected by bolts; and a sealing ring is arranged at the joint of the first valve body and the second valve body.
Example 4
As shown in fig. 5, a CBS linkage pump body of a CBS linkage structure includes a valve body 1, the valve body is connected in series between a front brake oil pipe and a rear brake oil pipe, a first oil passage 2, a second oil passage 3 and a plunger cavity 3 are arranged in the valve body, the first oil passage, the second oil passage and the plunger cavity are communicated, and the plunger cavity 3 is arranged in the middle of the first oil passage and is perpendicular to the second oil passage; the plunger cavity comprises a first plunger cavity 3.1 and a second plunger cavity 3.3, the first oil duct is divided into an upper oil duct 1.1 and a lower oil duct 1.2 by the second plunger cavity 3.3, two oil ducts, namely an auxiliary oil duct 1.11 and a pressure reducing oil duct 1.12, are arranged on a valve body at the bottom of the upper oil duct 1.1, and the inner diameter of the pressure reducing oil duct is 0.1mm-0.5 mm; the upper oil passage 1.1 is communicated with the second plunger cavity 3.3 through an auxiliary oil passage 1.11 and a pressure reducing oil passage 1.12. A plunger 4 is arranged in the plunger cavity 3 and is matched with the first plunger cavity; a one-way oil seal is arranged on the plunger in the second plunger cavity, an opening is formed in the rear side wall of the valve body corresponding to the second plunger cavity 3.3, a plugging piece is arranged on the opening in a sealing mode, the plugging piece is a screw plug 19, and a return spring 8 is arranged between the plugging piece and the rear end face of the plunger; an exhaust hole communicated with the second plunger cavity is further formed in the valve body on the outer side of the first oil duct, and an exhaust screw 20 is arranged on the exhaust hole in a matched mode; a second boss 5 is arranged on the plunger, and the second boss is abutted against the inner side wall of the front end of the second plunger cavity under the action of a return spring; a first oil seal 10 is provided in the first plunger chamber. Under the reset spring effect, second boss 5 and second plunger chamber front end inside wall looks butt, the one-way oil blanket in the plunger outside of second plunger intracavity is a leather cup 9, and the leather cup realizes one-way sealed with second plunger intracavity lateral wall, and the plunger is in initial position this moment, first position promptly, and when this position, the leather cup is in the outside of decompression oil duct, makes the oil duct be linked together through the second plunger chamber of decompression oil duct and leather cup inboard. The oil pressure in the second oil duct is increased to a certain degree, the left end of the plunger is pushed to move towards the first plunger cavity, the reset spring is compressed, the leather cup blocks the pressure reduction oil duct, the oil pressure in the first oil duct enters the second plunger cavity on the outer side of the leather cup through the auxiliary oil duct and the pressure reduction oil duct respectively and enters the second plunger cavity on the inner side of the leather cup through the leather cup to enter the oil discharge duct, and at the moment, the oil pressure in the first oil duct and the oil pressure in the second oil duct act on the branch pump connected with the first oil duct respectively. In the working process, in the compression process of the return spring, the pressure of the second plunger cavity is increased, and the exhaust screw plays a role in exhausting.
The screw plug is arranged on the rear side wall of the valve body corresponding to the second plunger cavity, so that the whole valve body is more convenient to process and flexible to use.
Example 5
As shown in fig. 6, the brake system of the motorcycle adopting the CBS linkage structure of embodiment 4 includes a CBS linkage structure, and a front master brake pump 12, a front wheel brake cylinder, a rear master brake pump 13 and a rear wheel brake cylinder connected to the CBS linkage structure, wherein the front wheel brake cylinder is connected to a front brake disc 14 for braking a front wheel, and the rear wheel brake cylinder is connected to a rear brake disc 15 for braking a rear wheel; the CBS linkage structure comprises a valve body 1, wherein the valve body is connected between a front brake oil pipe and a rear brake oil pipe in series, a first oil duct 2, a second oil duct 3 and a plunger cavity 3 are arranged in the valve body, the first oil duct, the second oil duct and the plunger cavity are communicated, and the plunger cavity 3 is arranged in the middle of the first oil duct and is vertical to the second oil duct; the plunger cavity comprises a first plunger cavity 3.1 and a second plunger cavity 3.3, the first oil duct is divided into an upper oil duct 1.1 and a lower oil duct 1.2 by the second plunger cavity 3.3, two oil ducts, namely an auxiliary oil duct 1.11 and a pressure reducing oil duct 1.12, are arranged on a valve body at the bottom of the upper oil duct 1.1, and the inner diameter of the pressure reducing oil duct is 0.1mm-0.5 mm; the upper oil passage 1.1 is communicated with the second plunger cavity 3.3 through an auxiliary oil passage 1.11 and a pressure reducing oil passage 1.12. A plunger 4 is arranged in the plunger cavity 3 and is matched with the first plunger cavity; a one-way oil seal is arranged on the plunger in the second plunger cavity, an opening is formed in the rear side wall of the valve body corresponding to the second plunger cavity 3.3, a plugging piece is arranged on the opening in a sealing mode, the plugging piece is a screw plug 19, and a return spring 8 is arranged between the plugging piece and the rear end face of the plunger; an exhaust hole communicated with the second plunger cavity is further formed in the valve body on the outer side of the first oil duct, and an exhaust screw 20 is arranged on the exhaust hole in a matched mode; a second boss 5 is arranged on the plunger, and the second boss is abutted against the inner side wall of the front end of the second plunger cavity under the action of a return spring; a first oil seal 10 is provided in the first plunger chamber. Under the reset spring effect, second boss 5 and second plunger chamber front end inside wall looks butt, the one-way oil blanket in the plunger outside of second plunger intracavity is a leather cup 9, and the leather cup realizes one-way sealed with second plunger intracavity lateral wall, and the plunger is in initial position this moment, first position promptly, and when this position, the leather cup is in the outside of decompression oil duct, makes the oil duct be linked together through the second plunger chamber of decompression oil duct and leather cup inboard. The oil pressure in the second oil duct is increased to a certain degree, the left end of the plunger is pushed to move towards the first plunger cavity, the reset spring is compressed, the leather cup blocks the pressure reduction oil duct, the oil pressure in the first oil duct enters the second plunger cavity on the outer side of the leather cup through the auxiliary oil duct and the pressure reduction oil duct respectively and enters the second plunger cavity on the inner side of the leather cup through the leather cup to enter the oil discharge duct, and at the moment, the oil pressure in the first oil duct and the oil pressure in the second oil duct act on the branch pump connected with the first oil duct respectively. And the front brake disc and the rear brake disc brake the front wheel and the rear wheel together.
During the working process, when the front brake is used, the pressure of a front brake master cylinder 12 enters an upper oil channel of a first oil channel through a front brake oil pipe, and passes through a pressure reducing oil channel 1.12, a second plunger cavity and a lower oil channel on the inner side of a leather cup to pressurize a front wheel, so that a front brake disc brakes a front wheel, when the rear brake is used, the rear brake master cylinder pressurizes a rear wheel through a rear brake oil pipe and a second oil channel 3, so that the rear brake disc brakes a rear wheel, meanwhile, the oil pressure in the second oil channel pushes a plunger 4 to move rightwards, a return spring compresses and moves towards the direction of a plug, the leather cup 9 passes through the pressure reducing oil channel 1.12, the pressure reducing oil channel 1.12 is closed, the front wheel continues to pressurize, and linkage brake control is completed. In a linkage state, the front brake master cylinder continuously increases the pressure, brake fluid in the upper oil duct can pass through the auxiliary oil duct 1.11 and the pressure reduction oil duct 1.12 and enter one side of a third plunger cavity 3.3 directly communicated with the lower oil duct through a leather cup 9, pressure is continuously applied to the front wheel cylinder, and the front wheel obtains larger braking force. After the brake is released and the pressure is reduced, the plunger is pushed by the return spring to reset, the leather cup returns to the original position, the pressure reduction channel is opened, and the brake pressure disappears.
Example 6
As shown in fig. 7, the motorcycle brake system is the same as the motorcycle brake system of embodiment 5 except that an ABS anti-lock system 16 is installed, a front brake master cylinder is connected to a first oil passage inlet of a CBS linkage structure valve body through a pipeline, a rear brake master cylinder is connected to a second oil passage inlet of the CBS linkage structure valve body through a pipeline, a first oil passage outlet of the CBS linkage structure valve body is connected to a front wheel oil inlet of the ABS anti-lock system through a pipeline, a front wheel oil outlet of the ABS anti-lock system is connected to a front wheel sub-pump through a pipeline, a second oil passage outlet of the CBS linkage structure valve body is connected to a rear wheel oil inlet of the ABS anti-lock system through a pipeline, and a rear wheel oil outlet of the ABS anti-lock system is connected to a rear wheel sub.
The use process is the same as that of embodiment 5, and the ABS is installed, so that the motorcycle braking system avoids wheel locking in linkage braking, and is safer.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (10)
1. A CBS linkage structure comprises a valve body, and is characterized in that the valve body is connected in series between a front brake oil pipe and a rear brake oil pipe, a first oil duct (1), a second oil duct (2) and a plunger cavity (3) are arranged in the valve body, the first oil duct is connected with the front brake oil pipe, and the second oil duct is connected with the rear brake oil pipe;
the plunger cavity is communicated with the first oil duct and the second oil duct; the first oil channel is divided into an upper oil channel (1.1) and a lower oil channel (1.2) by the plunger cavity, the plunger (4) is arranged in the plunger cavity, and an auxiliary oil channel (1.11) and a pressure reduction oil channel (1.12) are arranged on the valve body at the bottom of the upper oil channel in a separating manner; the plunger piston in the plunger piston cavity is provided with a one-way oil seal, and the plunger piston cavity outside the plunger piston is provided with a reset elastic part;
the plunger is provided with a first position and a second position under the coordination of oil pressure in the second oil duct and the reset elastic piece; when the plunger is in the first position, the pressure reducing oil duct is communicated with the plunger cavity and the lower oil duct on the inner side of the one-way oil seal; when the plunger is in the second position, the one-way oil seal plugs the pressure reduction oil duct, and the auxiliary oil duct is communicated with the plunger cavity outside the one-way oil seal and is further communicated with the plunger cavity inside the one-way oil seal and the lower oil duct through the one-way oil seal.
2. The CBS linkage structure according to claim 1, wherein the plunger cavity (3) comprises a first plunger cavity (3.1) matched with the outer side wall of the plunger and a limit cavity (3.2) arranged in the middle of the first plunger cavity; a first boss (7) is arranged at the rear part of the plunger, the reset elastic part is arranged between the first boss and the inner side wall of the rear end of the limiting cavity, a second boss (5) is arranged at the front part of the plunger, and the second boss is abutted against the inner side wall of the front end of the limiting cavity under the action of the reset elastic part; and a third boss (6) is arranged on the outer side of the second boss, and the one-way oil seal is arranged on the outer side wall of the plunger between the first boss and the third boss.
3. The CBS linkage structure according to claim 1, wherein the plunger cavity (3) comprises a first plunger cavity (3.1) and a second plunger cavity (3.3), the front part of the plunger is matched with the first plunger cavity, and the second plunger cavity is arranged corresponding to the first oil passage; an opening is formed in the rear side wall of the valve body corresponding to the second plunger cavity, a plugging piece is arranged on the opening in a sealing mode, and a reset elastic piece is arranged between the plugging piece and the rear end face of the plunger; the valve body outside the first oil duct is also provided with an exhaust hole communicated with the second plunger cavity, and an exhaust part is arranged on the exhaust hole in a matched manner; a second boss (5) is arranged on the plunger and abuts against the inner side wall of the front end of the second plunger cavity under the action of the reset elastic piece; the one-way oil seal is arranged on the plunger in the second plunger cavity.
4. The CBS linkage structure according to claim 2, wherein a first oil seal (10) and a second oil seal (11) are respectively arranged between the first plunger cavity and the plunger on two sides of the limit cavity.
5. The CBS linkage structure according to claim 4, wherein the first oil seal and the second oil seal are respectively arranged on inner side walls of the first plunger cavity; or the first oil seal and the second oil seal are respectively arranged on the outer side wall of the plunger.
6. The CBS linkage according to claim 1, wherein a first oil seal is provided between the front of the plunger and the inner wall of the plunger chamber; and a second oil seal is arranged between the rear part of the plunger and the inner side wall of the plunger cavity.
7. The CBS linkage structure according to claim 6, wherein the first oil seal is provided on an inner side wall of a front portion of the plunger cavity, and the second oil seal is provided on an inner side wall of a rear portion of the plunger cavity; or the first oil seal is arranged on the outer side wall of the front part of the plunger, and the second oil seal is arranged on the outer side wall of the rear part of the plunger; or, the first oil seal is arranged on the inner side wall of the front part of the plunger cavity, and the second oil seal is arranged on the outer side wall of the rear part of the plunger.
8. The CBS linkage structure according to claim 1, wherein the valve body is a split structure, and the valve body of the split structure is fixed via a threaded fastener.
9. A motorcycle comprising a CBS linkage structure according to any one of claims 1 to 8.
10. An electric vehicle comprising the CBS linkage structure of any of claims 1-8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019209374732 | 2019-06-20 | ||
| CN201920937473 | 2019-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211223744U true CN211223744U (en) | 2020-08-11 |
Family
ID=71942508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921974399.8U Active CN211223744U (en) | 2019-06-20 | 2019-11-15 | CBS linkage structure and motorcycle and electric vehicle adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211223744U (en) |
-
2019
- 2019-11-15 CN CN201921974399.8U patent/CN211223744U/en active Active
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