TWI763345B - Brake pump and interlocking brake system with the same - Google Patents

Abstract

The present invention relates to a brake pump and an interlocking brake system with the same. The brake pump includes a first brake lever, a first plunger, a first cylinder, a first oil storage chamber and a first spring. The first brake lever is pivotally connected to the first cylinder. The first plunger is installed in the first cylinder, and the first brake lever can directly or indirectly push the first plunger. The first plunger divides the internal space of the first cylinder into a first oil chamber, a second oil chamber and a third oil chamber, and the second oil chamber is connected to the first oil storage chamber. Wherein, the two ends of the third oil chamber have a difference in the cross-sectional area of the first plunger, one end has a large cross-sectional area, and the other end has a small cross-sectional area, and the cylinder outer wall of the third oil chamber is provided with a hydraulic oil inlet and outlet. The communication hole will force the first plunger to move when there is oil pressure in the third oil chamber. As such, the present invention can effectively reduce the number of cylinders of the brake pump and eliminate the necessity of rocker arm configuration, miniaturize the device, and realize a low-cost and efficient brake pump.

Description

Brake master cylinder and linked brake system having the same

The present invention relates to a master brake cylinder and a linked brake system with the master cylinder, in particular to a master cylinder for locomotives and a linked brake system with the master cylinder.

In order to improve the riding safety of motorcycles, the government has mandated the installation of a linked brake system for vehicle safety-related laws and regulations to effectively shorten the braking distance, especially the disc brake system equipped with the front and rear brake systems. The linkage braking action can be normal, and at the same time, it can also take into account the control cost.

For example, the Republic of China Patent No. I307668 is a linkage brake design, the rider can control the front axle brake with the right hand, and the other operating end such as the left hand or the right foot must be able to control the front axle and rear axle brakes at the same time. However, in the prior art, two cylinders (hydraulic master cylinder for front wheel and slave cylinder for linkage) are required to be configured on the master cylinder structure of the brake, and a rocker arm is required to assist in transmitting and applying force. Therefore, the conventional linkage braking system requires The brake master cylinder is cumbersome in component assembly and will occupy a larger volume.

The inventor is motivated by this, and based on the spirit of active invention, he has urgently thought of a master cylinder and a linkage braking system with the master cylinder that can solve the above problems. After several researches and experiments, the present invention is finally completed.

The main purpose of the present invention is to provide a brake master cylinder, which can effectively reduce the number of cylinders of the brake master cylinder and save the The necessity of the rocker arm configuration makes the device miniaturized and realizes a low-cost and efficient brake master cylinder.

In order to achieve the above purpose, the first design of the brake master cylinder of the present invention is a first brake master cylinder, which includes a first brake lever, a first plunger, a first cylinder, a first oil storage chamber and a first oil storage chamber. The first spring, the first brake lever is pivoted on the first cylinder, the first plunger is installed in the first cylinder, the first brake lever can directly or indirectly push the first plunger, the first plunger will The inner space of the first cylinder body is divided into a first oil chamber, a second oil chamber and a third oil chamber, and the second oil chamber communicates with the first oil storage chamber.

Among them, the two ends of the third oil chamber have a difference in the cross-sectional area of the first plunger, one end has a large cross-sectional area, and the other end has a small cross-sectional area, and the outer wall of the cylinder of the third oil chamber is provided with a hydraulic oil inlet and outlet. The communication hole will force the first plunger to move when oil pressure is generated in the third oil chamber.

The brake master cylinder of the second design of the present invention is a first brake master cylinder, which includes a first brake lever, a first plunger, a first cylinder, a first oil storage chamber and a first spring. A brake lever is pivotally connected to the first cylinder, the first plunger is installed in the first cylinder, the first brake lever can directly or indirectly push the first plunger, and the first plunger pushes the inner space of the first cylinder It is divided into a first oil chamber, a second oil chamber and a third oil chamber. The second oil chamber is connected to the first oil storage chamber. The first plunger is provided with a long groove and an auxiliary oil chamber connected with the long groove. There is an inner hole between the chamber and the long groove, the auxiliary oil chamber is equipped with a valve member, the valve member protrudes with a long rod that can be inserted into the inner hole, and there is a small spring between the valve member and the first plunger, which can be connected for a long time. The valve member exerts a force, and the first cylinder body is provided with a positioning pin which penetrates through the long groove.

Among them, the two ends of the third oil chamber have a difference in the cross-sectional area of the first plunger, one end has a large cross-sectional area, and the other end has a small cross-sectional area, and the outer wall of the cylinder of the third oil chamber is provided with a hydraulic oil inlet and outlet. The communication hole will force the first plunger to move when oil pressure is generated in the third oil chamber.

Another object of the present invention is to provide an interlocking braking system, which realizes the interlocking braking function by loading the above-mentioned brake master cylinder into the interlocking braking system. The interlocking brake system of the first design includes the first brake master cylinder, a second brake master cylinder, a first brake caliper, a second brake caliper, a first brake oil pipe and a second brake oil pipe. The second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second oil storage chamber and a second spring. The second brake lever is pivotally connected to the second cylinder, and the second The plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second plunger, there is a fourth oil chamber between the second plunger and the second cylinder, and the fourth oil chamber is connected to the second reservoir The oil chamber, when the fourth oil chamber has oil pressure, will force the second plunger to move.

The first oil chamber is connected to the first brake caliper by a first brake oil pipe, and the third oil chamber and the fourth oil chamber are connected to the second brake caliper by a second brake oil pipe. Thereby, when the first brake lever is operated, the first brake caliper is actuated to produce a braking effect, and when the second brake lever is operated, both the first brake caliper and the second brake caliper can be actuated to produce a linked braking effect.

The linked brake system of the second design includes the first brake master cylinder, a second brake master cylinder, a first brake caliper, a second brake caliper, a first brake hose and a second brake hose. The second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second oil storage chamber and a second spring. The second brake lever is pivotally connected to the second cylinder, and the second The plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second plunger, and the second plunger divides the inner space of the second cylinder into a fourth oil chamber, a fifth oil chamber and a The sixth oil chamber and the fifth oil chamber are connected to the second oil storage chamber; wherein, the two ends of the sixth oil chamber have a difference in cross-sectional area in the second plunger, one end has a large cross-sectional area, and the other end has a small cross-sectional area, and The outer wall of the cylinder of the sixth oil chamber is provided with a communication hole for the hydraulic oil to enter and exit. When the oil pressure is generated in the sixth oil chamber, the second plunger will be forced to move.

The first oil chamber and the sixth oil chamber are connected to the first brake caliper by a first brake oil pipe, and the third oil chamber and the fourth oil chamber are connected to the second brake caliper by a second brake oil pipe. Thereby, when the first brake lever is operated, both the first brake caliper and the second brake caliper can be actuated to generate a linked braking effect, and when the second brake lever is operated, both the first brake caliper and the second brake caliper can be actuated to It produces the effect of interlocking braking, which has the technical characteristics of double interlocking braking.

The linked brake system of the third design includes the first brake master cylinder, a second brake master cylinder, a third brake master cylinder, a first brake caliper, a second brake caliper, a first brake oil pipe, A second brake oil pipe and a third brake oil pipe, the second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second oil storage chamber and a second spring, the second The brake lever is pivotally connected to the second cylinder, the second plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second plunger, and the second plunger divides the inner space of the second cylinder into a fourth oil chamber, a fifth oil chamber and a sixth oil chamber, the fifth oil chamber communicates with the second oil storage chamber, the third brake master cylinder includes a third brake lever, a third plunger, A third cylinder, an oil cup and a push rod, the third cylinder is fixed on a frame and connected to the oil cup, the third brake lever is pivotally connected to the frame, and the third plunger is installed on the first In the triple cylinder, the third brake lever is connected to the third plunger by a push rod; wherein, the two ends of the sixth oil chamber have a difference in cross-sectional area in the second plunger, one end has a large cross-sectional area, and the other end has a small cross-sectional area , and the outer wall of the cylinder of the sixth oil chamber is provided with a communication hole for hydraulic oil to enter and exit. When the sixth oil chamber has oil pressure, it will force the second plunger to move.

The first oil chamber is connected to the first brake caliper by a first brake oil pipe, the third oil chamber and the fourth oil chamber are connected to the second brake caliper by a second brake oil pipe, and the sixth oil chamber is connected by a third brake oil pipe The third cylinder. Thereby, when the first brake lever is operated, the first brake caliper is actuated to produce a braking effect, and when the second brake lever is operated, both the first brake caliper and the second brake caliper can be actuated to produce a linked braking effect. When there are three brake levers, both the first brake caliper and the second brake caliper can be actuated to produce a linkage braking effect, which has the technical characteristics of double linkage braking.

The interlocking brake system of the fourth design includes the first brake master cylinder, a second brake master cylinder, a third brake master cylinder, a first brake caliper, a second brake caliper, a first brake oil pipe, A second brake oil pipe and a third brake oil pipe, the second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second oil storage chamber and a second spring, the second brake The lever is pivotally connected to the second cylinder, the second plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second plunger, and the second plunger divides the inner space of the second cylinder into a A fourth oil chamber, a fifth oil chamber and a sixth oil chamber, the fifth oil chamber is connected to the second oil storage chamber, the third brake master cylinder includes a third brake lever, a third plunger, a third A cylinder block, an oil cup and a push rod, the third cylinder block is fixed on a frame and connected to the oil cup, the third brake lever is pivotally connected to the frame, and the third plunger is installed in the third cylinder block , the third brake lever is connected to the third plunger by a push rod; wherein, the two ends of the sixth oil chamber have a difference in cross-sectional area in the second plunger, one end is a large cross-sectional area, the other end is a small cross-sectional area, and the first The outer wall of the cylinder of the sixth oil chamber is provided with a communication hole for the hydraulic oil to enter and exit. When the oil pressure is generated in the sixth oil chamber, the second plunger will be forced to move.

The first oil chamber is connected to the first brake caliper by a first brake oil pipe, the fourth oil chamber is connected to the second brake caliper by a second brake oil pipe, and the third oil chamber and the sixth oil chamber are connected by a third brake oil pipe The third cylinder. Thereby, when the first brake lever is operated, the first brake caliper is actuated to produce a braking effect, when the second brake lever is operated, the second brake caliper is actuated to produce a braking effect, and when the third brake lever is operated, the first brake Both the caliper and the second brake caliper can be actuated to produce a linked braking effect.

Both the foregoing summary and the following detailed description are exemplary in nature and are intended to further illustrate the scope of the present invention. The other objects and advantages of the present invention will be explained in the following descriptions and drawings.

Please refer to FIG. 1 to FIG. 3 , which are the structure diagram of the interlocking brake system according to the first embodiment of the present invention, the cross-sectional view of the first brake master cylinder of the first design, and the cross-sectional view of the second brake master cylinder of the first design. As shown in FIG. 1 , the interlocking brake system of this embodiment mainly includes a first brake master cylinder 1 , a second brake master cylinder 2 , a first brake caliper 3 , a second brake caliper 4 , and a first brake oil pipe 5 and a second brake oil pipe 6. The first master cylinder 1 can control the braking system of the front wheel, and the second master cylinder 2 can control the braking system of the rear wheel, or control the braking system of the front wheel and the rear wheel in linkage.

Please also refer to FIG. 2 , the first brake master cylinder 1 of the first design of this embodiment includes a first brake lever 11 , a first plunger 12 , a first cylinder 13 , and a first oil storage chamber 14 and a first spring 15, the first brake lever 11 is pivotally connected to the first cylinder 13, the first plunger 12 is installed in the first cylinder 13, and the first plunger 12 is sequentially provided with a first groove seat 121, a second socket 122, a third socket 123 and a fifth socket 124, the first socket 121 is equipped with a first one-way cup 161, the second socket 122 is equipped with a second single Toward the cup 162, the third groove seat 123 is provided with a third one-way cup 163, and the fifth groove seat 124 is provided with a dust cover 165. When the first brake lever 11 rotates, it can directly or indirectly push the first plunger 12 move within the first cylinder 13 . A fourth groove seat 134 is arranged in the first cylinder block 13 , and a fourth one-way cup 164 is installed in the fourth groove seat 134 . After the first plunger 12 is installed in the first cylinder block 13 , the first cylinder block The inner space of 13 is divided into a first oil chamber 131 , a second oil chamber 132 and a third oil chamber 133 . There is a first one-way cup 161 between the first oil chamber 131 and the second oil chamber 132, and a second one-way cup 162 and a third one-way cup 162 between the second oil chamber 132 and the third oil chamber 133. The second one-way cup 162 and the third one-way cup 163 are spaced apart from each other, and the installation directions of the second one-way cup 162 and the third one-way cup 163 are exactly opposite. The other end of the third oil chamber 133 has a fourth one-way cup 164 for sealing.

The second oil chamber 132 is located between the first oil chamber 131 and the third oil chamber 133, the second oil chamber 132 is kept in communication with the first oil storage chamber 14, the first oil chamber 131, the second oil chamber 132, the third oil chamber 132 The interior of the chamber 133 is filled with brake fluid. Wherein, the two ends of the third oil chamber 133 have a difference in cross-sectional area at the first plunger 12 , one end has a large cross-sectional area D, and the other end has a small cross-sectional area d. The first spring 15 can act on the first plunger 12 . A spring force enables the first plunger 12 to return to its initial position after moving. The characteristic is that when the first plunger 12 moves in the direction against the spring force, the volume of the first oil chamber 131 will decrease, and the volume of the third oil chamber 133 will decrease. In addition, the outer wall of the cylinder of the third oil chamber 133 is provided with a communication hole 130 through which hydraulic oil can enter and exit. When the third oil chamber 133 has oil pressure, the first plunger 12 will be forced to move.

Next, please refer to FIG. 3 , the second brake master cylinder 2 of the first design of this embodiment includes a second brake lever 21 , a second plunger 22 , a second cylinder 23 , and a second oil storage The chamber 24 and a second spring 25, the second brake lever 21 is pivotally connected to the second cylinder 23, the second plunger 22 is installed in the second cylinder 23, the second brake lever 21 can directly or indirectly push the first Two plungers 22, the second plunger 22 is provided with a sixth groove seat 221 and a seventh groove seat 222 in sequence, the sixth groove seat is provided with a fifth one-way cup 261, and the seventh groove seat is provided with a sixth groove seat To the leather bowl 262. After the second plunger 22 is installed in the second cylinder block 23 , the inner space of the second cylinder block 23 can be divided into a fourth oil chamber 231 and a fifth oil chamber 232 . A fourth oil chamber 231 is arranged between the second plunger 22 and the second cylinder block 23 , a fifth one-way cup 261 is arranged between the fourth oil chamber 231 and the fifth oil chamber 232 , and the other end of the fifth oil chamber 232 There is a sixth one-way cup 262 as a seal, the fourth oil chamber 231 and the fifth oil chamber 232 are both filled with brake oil. When the second brake lever 21 directly or indirectly pushes the second plunger 22, the volume of the fourth oil chamber 231 will reduce and push out hydraulic oil.

As shown in FIGS. 1 to 3 , in this embodiment, the first oil chamber 131 is connected to the first brake caliper 3 by the first brake oil pipe 5 , and the third oil chamber 133 and the fourth oil chamber 231 are connected to the second brake The oil pipe 6 is connected to the second brake caliper 4 to construct a complete interlocking brake system. When the first brake lever 11 is operated, the first plunger 12 is forced by the first brake lever 11 to move, and at this time, the brake oil in the first oil chamber 131 will pass through the first brake oil pipe 5 to actuate the first brake caliper 3 , resulting in a braking effect. When the second brake lever 21 is operated, the second plunger 22 is forced by the second brake lever 21 to move, and at this time the brake oil in the fourth oil chamber 231 is transmitted to the second brake caliper 4 and the second brake caliper 4 through the second brake oil pipe 6 The three oil chambers 133 actuate the second brake caliper 4 to generate a braking effect.

Please also refer to FIG. 4 , which is an action diagram of the first brake master cylinder of the first design according to the first embodiment of the present invention. When the second brake lever 21 is operated, the third oil chamber 133 is fed with brake oil from the fourth oil chamber 231 , and the third oil chamber 133 has a large cross-sectional area D and a small cross-sectional area d in the first plunger 12 When the oil pressure in the third oil chamber 133 is generated, the first plunger 12 will be forced to move, and the first plunger 12 will push the brake oil in the first oil chamber 131 to the first brake caliper 3 to make the first brake The caliper 3 is actuated to generate the brake linkage.

Please refer to FIG. 5 and FIG. 6 , which are a cross-sectional view of the first brake master cylinder of the second design of the first embodiment of the present invention and a cross-sectional view of A-A in FIG. 5 , respectively. As shown in the figure, the first brake master cylinder 1' of the second design of this embodiment includes a first brake lever 11, a first plunger 12', a first cylinder 13', and a first oil storage chamber 14' and a first spring 15', the first brake lever 11 is pivotally connected to the first cylinder 13', the first plunger 12' is installed in the first cylinder 13', the first plunger 12' The inner space of the first cylinder block 13' is divided into a first oil chamber 131', a second oil chamber 132' and a third oil chamber 133', and the second oil chamber 132' communicates with the first oil storage chamber 14', The first plunger 12' is provided with a long groove 125 and an auxiliary oil chamber 126 communicating with the long groove 125. An inner hole 128 is provided between the auxiliary oil chamber 126 and the long groove 125, and a valve member 127 is installed in the auxiliary oil chamber 126. , the valve member protrudes with a long rod 1271 that can be inserted into the inner hole 128, a small spring 129 between the valve member 127 and the first plunger 12' can exert force on the valve member 127 for a long time, the first cylinder 13 'A positioning pin 17 is provided through the long groove 125 . Wherein, before the first plunger 12' has not moved, the long rod 1271 of the valve member 127 will bear against the positioning pin 17, so that the inner hole 128 between the long groove 125 and the auxiliary oil chamber 126 is kept unobstructed. The outer wall of the cylinder of the third oil chamber 133' is provided with a communication hole 130' through which hydraulic oil can enter and exit. When oil pressure is generated in the third oil chamber 133', the first plunger 12' will be forced to move.

Please also refer to FIG. 1 , when the first brake lever 11 is operated, the first plunger 12 ′ is forced to move by the first brake lever 11 ′, at this time the long rod 1271 will leave the positioning pin 17 , and the valve member 127 will The inner hole 128 will be closed, so that the brake oil in the first oil chamber 131 ′ will pass through the first brake oil pipe 5 to actuate the first brake caliper 3 to generate a braking effect.

Please refer to FIG. 7 and FIG. 8 , which are the action diagram of the first brake master cylinder of the second design of the first embodiment of the present invention and the cross-sectional view of FIG. 7 A-A, respectively. As shown in FIG. 1 , FIG. 7 and FIG. 8 , when the second brake lever 21 is operated, the second plunger 22 is forced to move by the second brake lever 21 , and the brake oil in the fourth oil chamber 231 passes through the second brake lever 21 . The brake oil pipe 6 is transmitted to the second brake caliper 4 and the third oil chamber 133 ′, so that the second brake caliper 4 is actuated to generate a braking effect. When the second brake lever 21 is operated, since the third oil chamber 133' is fed into the brake oil from the fourth oil chamber 231, and the third oil chamber 133' has a large cross-sectional area D and a small The difference in cross-sectional area d causes the oil pressure in the third oil chamber 133' to force the first plunger 12' to move, and the first plunger 12' pushes the brake oil in the first oil chamber 131' to the first brake The caliper 3 operates the first brake caliper 3 to generate a brake linkage.

With the above two designs, by changing the layout of the oil chamber in the cylinder and the difference in the cross-sectional area of the plunger cylinder, the number of cylinders in the master cylinder of the brake can be effectively reduced and the necessity of rocker arm configuration can be eliminated. Miniaturize the device and realize a low-cost and efficient brake master cylinder.

Please refer to FIG. 9 and FIG. 10 , which are respectively a structural diagram of a linked brake system according to a second embodiment of the present invention and a cross-sectional view of the second brake master cylinder. As shown in FIG. 9 , the linked brake system of this embodiment mainly includes a first master cylinder 1 , a second master cylinder 2 ′, a first brake caliper 3 , a second brake caliper 4 , and a first brake The oil pipe 5 ′ and a second brake oil pipe 6 . The first master cylinder 1 can control the braking system of the front wheel, and the second master cylinder 2' can control the braking system of the rear wheel, or control the braking system of the front wheel and the rear wheel in linkage. Wherein, the basic structure of the interlocking brake system of this embodiment is the same as that of the first embodiment, but the difference lies in the connection method of the second brake master cylinder 2' and the first brake oil pipe 5'.

As shown in FIG. 10, the second brake master cylinder 2' includes a second brake lever 21, a second plunger 22', a second cylinder 23', a second oil storage chamber 24' and a second spring 25', the second brake lever 21 is pivotally connected to the second cylinder 23', the second plunger 22' is installed in the second cylinder 23', and the second plunger 22' is sequentially provided with a sixth groove The seat 221', a seventh groove seat 222', an eighth groove seat 223' and a tenth groove seat 224', the sixth groove seat 221' is equipped with a fifth one-way cup 261', the seventh groove seat 222' is equipped with a sixth one-way leather cup 262', the eighth slot seat 223' is equipped with a seventh one-way leather cup 263', the tenth slot seat 224' is equipped with a dust jacket 265', the second brake lever is installed When the 21 rotates, it can directly or indirectly push the second plunger 22' to move in the second cylinder 23'. A ninth groove seat 234' is disposed in the second cylinder block 23', and an eighth one-way cup 264' is installed in the ninth groove seat 234'.

After the second plunger 22' is installed in the second cylinder 23', the inner space of the second cylinder 23' can be divided into a fourth oil chamber 231', a fifth oil chamber 232' and a sixth oil chamber 233' , there is a fifth one-way cup 261' between the fourth oil chamber 231' and the fifth oil chamber 232', and there is a sixth one-way cup between the fifth oil chamber 232' and the sixth oil chamber 233' 262' and the seventh one-way cup 263' are spaced apart, and the sixth one-way cup 262' and the seventh one-way cup 263' are installed in opposite directions. The other end of the sixth oil chamber 233' has an eighth one-way The cup 264' is used for sealing, the fifth oil chamber 232' is located between the fourth oil chamber 231' and the sixth oil chamber 233', the fifth oil chamber 232' is kept in communication with the oil storage chamber 24', and the fourth oil chamber 231', the fifth oil chamber 232' and the sixth oil chamber 233' are all filled with brake oil, the two ends of the sixth oil chamber 233' have a difference in cross-sectional area in the second plunger 22', and one end is a large cross-sectional area. area D, the other end is a small cross-sectional area d, the fourth oil chamber 231' is equipped with a second spring 25', the second spring 25' can exert a spring force on the second plunger 22', so that the second plunger After the movement of the second plunger 22', it can return to the original position, which is characterized in that when the second plunger 22' moves in the direction against the spring force, the volume of the fourth oil chamber 231' will decrease, the volume of the sixth oil chamber 233' will increase, and the sixth oil chamber 233' will increase in volume. The cylinder outer wall of the oil chamber 233' is provided with a communication hole 230' for hydraulic oil to enter and exit. When the oil pressure is generated in the sixth oil chamber 233', the second plunger 22' will be forced to move.

In this embodiment, the first oil chamber 131 and the sixth oil chamber 233' are connected to the first brake caliper 3 by the first brake oil pipe 5', and the third oil chamber 133 and the fourth oil chamber 231' are connected by the second The brake oil pipe 6 is connected to the second brake caliper 4 . When the first brake lever 11 is operated, the first plunger 12 is forced to move by the first brake lever 11 , and the brake oil in the first oil chamber 131 is transmitted to the first brake caliper 3 and the first brake oil pipe 5 ′ at this time. The sixth oil chamber 233 ′ activates the first brake caliper 3 , and the second plunger 22 ′ is forced to move because the sixth oil chamber 233 ′ is fed with the brake oil from the first oil chamber 131 . Then, the brake oil in the fourth oil chamber 231' is pushed to the second brake caliper 4 to generate the brake linkage, and since the second brake lever 21 also has linkage brakes, the second embodiment has the feature of double linkage brakes.

Please refer to FIG. 11 , which is a structural diagram of a linkage braking system according to a third embodiment of the present invention. The figure shows a linked brake system, the basic structure of which is the same as that of the second embodiment, mainly including a first master brake cylinder 1 , a second master brake cylinder 2 ′, a third master brake cylinder 7 , and a first brake master cylinder 7 . Caliper 3 , a second brake caliper 4 , a first brake oil pipe 5 , a second brake oil pipe 6 and a third brake oil pipe 8 . The only difference is that this embodiment is provided with a third brake master cylinder 7 and a third brake oil pipe 8. The third brake master cylinder 7 includes a third brake lever 71, a third plunger 74, a third cylinder Body 75, an oil cup 73 and a push rod 72, the third cylinder 75 is fixed on a frame 9 and connected to the oil cup 73, the third brake lever 71 is pivotally connected to the frame 9, the third plunger 74 Installed in the third cylinder 75 , the third brake lever 71 is connected to the third plunger 74 by a push rod 72 . The first oil chamber 131 of the first brake master cylinder 1 is connected to the first brake caliper 3 by the first brake oil pipe 5, the third oil chamber 133 of the first brake master cylinder 1 and the first brake master cylinder 2' The fourth oil chamber 231 ′ is connected to the second brake caliper 4 by the second brake oil pipe 6 , and the sixth oil chamber 233 ′ of the second brake master cylinder 2 ′ is connected to the third cylinder 75 by the third brake oil pipe 8 .

When the first brake lever 11 is operated, the first plunger 12 transmits the hydraulic oil in the first oil chamber 131 to the first brake caliper 3, so that the first brake caliper 3 has a braking effect; when the second brake lever 21 is operated, The second plunger 22' sends the hydraulic oil in the fourth oil chamber 231' to the second brake caliper 4 and the third oil chamber 133 at the same time, so that the second brake caliper 4 and the first brake caliper 3 can simultaneously produce the braking effect; when When the third brake lever 71 is operated, the third plunger 74 can pressurize the hydraulic oil in the oil cup 73 to the sixth oil chamber 233 ′ through the third cylinder block 75 , so that the second brake caliper 4 and the first brake caliper 3 are connected. At the same time can generate braking.

Please refer to FIG. 12 , which is a structural diagram of a linkage braking system according to a fourth embodiment of the present invention. The figure shows a linkage braking system, the basic structure of which is the same as that of the third embodiment, but the difference lies in the first brake master cylinder 1, the second brake master cylinder 2, the third brake master cylinder 7, and the first brake caliper 3 And the connection between the second brake calipers 4 is slightly different. In this embodiment, the first oil chamber 131 of the first brake master cylinder 1 is connected to the first brake caliper 3 by the first brake oil pipe 5, and the fourth oil chamber 231' of the second brake master cylinder 2' is connected to the second The brake oil pipe 6' is connected to the second brake caliper 4, the third oil chamber 133 of the first brake master cylinder 1 and the sixth oil chamber 233' of the second brake master cylinder 2' are connected to the third cylinder by the third brake oil pipe 8' Body 75.

When the first brake lever 11 is operated, the first plunger 12 transmits the hydraulic oil in the first oil chamber 131 to the first brake caliper 3, so that the first brake caliper 3 has a braking effect; when the second brake lever 21 is operated, The second plunger 22' transports the hydraulic oil in the fourth oil chamber 231' to the second brake caliper 4, so that the second brake caliper 4 has a braking effect; when the third brake lever 71 is operated, the third plunger 74 can The hydraulic oil in the oil cup 73 is pressurized and sent to the sixth oil chamber 233 ′ and the third oil chamber 133 through the third cylinder 75 , so that the second brake caliper 4 and the first brake caliper 3 can simultaneously generate interlocking braking.

The above-mentioned embodiments are only examples for convenience of description, and the scope of the claims claimed in the present invention should be based on the scope of the patent application, rather than being limited to the above-mentioned embodiments.

1,1': 1st brake master cylinder 11: The first brake lever 12,12': 1st plunger 121: The first slot seat 122: The second slot seat 123: The third slot seat 124: Fifth slot seat 125: long slot 126: Auxiliary oil room 127: Valve parts 1271: Long pole 128: Inner hole 129: Small spring 13,13': 1st cylinder 130,130': Connecting hole 131,131’: First oil chamber 132,132': Second oil chamber 133,133’: Third oil chamber 134: Fourth slot seat 14,14': First oil reservoir 15,15': 1st spring 161: The first one-way leather bowl 162: Second one-way leather bowl 163: The third one-way leather bowl 164: Fourth one-way leather bowl 165: Dust jacket 17: Locating pin 2,2': Second brake master cylinder 21: Second brake lever 22,22': Second plunger 221,221’: Sixth socket 222, 222': seventh slot seat 223’: Eighth slot seat 224’: Tenth slot seat 23,23': Second cylinder 230': Connecting hole 231, 231’: Fourth oil chamber 232,232’: Fifth oil chamber 233’: sixth oil chamber 234’: ninth socket 24,24': Second oil reservoir 25,25': 2nd spring 261, 261': Fifth one-way leather bowl 262,262': Sixth One-Way Leather Bowl 263': seventh one-way leather bowl 264': Eighth one-way leather bowl 265': Dust jacket 3: The first brake caliper 4: Second brake caliper 5,5': 1st brake hose 6,6': 2nd brake hose 7: The third brake master cylinder 71: Third brake lever 72: Putter 73: Oil cup 74: Third plunger 75: The third cylinder 8,8': 3rd brake hose 9: Frame D: Large cross-sectional area d: small cross-sectional area

FIG. 1 is a structural diagram of a linkage braking system according to a first embodiment of the present invention. 2 is a cross-sectional view of the first brake master cylinder of the first design according to the first embodiment of the present invention. 3 is a cross-sectional view of the second master cylinder of the brake of the first design according to the first embodiment of the present invention. 4 is an action diagram of the first brake master cylinder of the first design according to the first embodiment of the present invention. 5 is a cross-sectional view of the first brake master cylinder of the second design of the first embodiment of the present invention. FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5 . 7 is an action diagram of the first brake master cylinder of the second design of the first embodiment of the present invention. FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7 . FIG. 9 is a structural diagram of a linked braking system according to a second embodiment of the present invention. 10 is a cross-sectional view of the second master cylinder of the linked brake system according to the second embodiment of the present invention. FIG. 11 is a structural diagram of a linkage braking system according to a third embodiment of the present invention. FIG. 12 is a structural diagram of a linkage braking system according to a fourth embodiment of the present invention.

1: The first brake master cylinder

11: The first brake lever

12: First plunger

121: The first slot seat

122: The second slot seat

123: The third slot seat

124: Fifth slot seat

13: The first cylinder

130: Connecting hole

131: The first oil chamber

132: Second oil chamber

133: The third oil chamber

134: Fourth slot seat

14: The first oil storage chamber

15: First Spring

161: The first one-way leather bowl

162: Second one-way leather bowl

163: The third one-way leather bowl

164: Fourth one-way leather bowl

165: Dust jacket

5: The first brake hose

6: Second brake hose

D: Large cross-sectional area

d: small cross-sectional area

Claims (6)

A brake master cylinder, comprising: a first brake master cylinder, including a first brake lever, a first plunger, a first cylinder, a first oil storage chamber and a first spring, the first brake lever pivotally connected to the first cylinder, the first plunger is installed in the first cylinder, the first brake lever can directly or indirectly push the first plunger, the first plunger the first cylinder The inner space of the body is divided into a first oil chamber, a second oil chamber and a third oil chamber, the second oil chamber is connected to the first oil storage chamber, the first spring is accommodated in the first oil chamber, and can be Reset the actuated first plunger; wherein, the two ends of the third oil chamber have a difference in cross-sectional area in the first plunger, one end is a large cross-sectional area, the other end is a small cross-sectional area, and the third oil chamber has a cross-sectional area difference. The outer wall of the cylinder of the oil chamber is provided with a communication hole for the hydraulic oil to enter and exit. When the third oil chamber has oil pressure, it will force the first plunger to move. A brake master cylinder, comprising: a first brake master cylinder, including a first brake lever, a first plunger, a first cylinder, a first oil storage chamber and a first spring, the first brake lever pivotally connected to the first cylinder, the first plunger is installed in the first cylinder, the first brake lever can directly or indirectly push the first plunger, the first plunger the first cylinder The inner space of the body is divided into a first oil chamber, a second oil chamber and a third oil chamber, the second oil chamber is connected to the first oil storage chamber, the first spring is accommodated in the first oil chamber, and can be Reset the actuated first plunger, the first plunger is provided with a long groove and an auxiliary oil chamber communicating with the long groove, an inner hole is arranged between the auxiliary oil chamber and the long groove, and the auxiliary oil chamber A valve member is installed, the valve member protrudes with a long rod that can be inserted into the inner hole, a small spring between the valve member and the first plunger can exert force on the valve member for a long time, the first cylinder The body is provided with a positioning pin passing through the long groove; Wherein, the two ends of the third oil chamber have a difference in the cross-sectional area of the first plunger, one end has a large cross-sectional area, and the other end has a small cross-sectional area, and the cylinder outer wall of the third oil chamber is provided with a hydraulic The communication hole for oil in and out will force the first plunger to move when oil pressure is generated in the third oil chamber. A linked brake system with the brake master cylinder of claim 1 or claim 2, comprising the first brake master cylinder, a second brake master cylinder, a first brake caliper, a second brake caliper, and a first brake Oil pipe and a second brake oil pipe, the second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second oil storage chamber and a second spring, the second brake lever pivotally connected to the second cylinder, the second plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second plunger, the second plunger and the second cylinder There is a fourth oil chamber between the bodies, the fourth oil chamber communicates with the second oil storage chamber, the second spring is accommodated in the fourth oil chamber, and can reset the actuated second plunger. When oil pressure is generated in the fourth oil chamber, it will force the second plunger to move; wherein, the first oil chamber is connected with the first brake caliper by the first brake oil pipe, the third oil chamber and the fourth oil chamber The chamber is connected to the second brake caliper by the second brake oil pipe. A linked brake system with the brake master cylinder of claim 1 or claim 2, comprising the first brake master cylinder, a second brake master cylinder, a first brake caliper, a second brake caliper, and a first brake Oil pipe and a second brake oil pipe, the second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second oil storage chamber and a second spring, the second brake lever pivotally connected to the second cylinder, the second plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second plunger, the second plunger the second cylinder The inner space of the body is divided into a fourth oil chamber, a fifth oil chamber and a sixth oil chamber, the fifth oil chamber is connected to the second oil storage chamber, the second spring is accommodated in the fourth oil chamber, and can be Reset the actuated second plunger; wherein, the two ends of the sixth oil chamber have a difference in cross-sectional area in the second plunger, one end is a large cross-sectional area, and the other end is a small cross-sectional area, and The outer wall of the cylinder of the sixth oil chamber is provided with a communication hole for hydraulic oil to enter and exit. When the sixth oil chamber has oil pressure, it will force the second plunger to move; wherein, the first oil chamber and the The sixth oil chamber is connected to the first brake caliper by the first brake oil pipe, and the third oil chamber and the fourth oil chamber are connected to the second brake caliper by the second brake oil pipe. A linked brake system with the brake master cylinder of claim 1 or claim 2, comprising the first brake master cylinder, a second brake master cylinder, a third brake master cylinder, a first brake caliper, a second brake master cylinder Brake calipers, a first brake oil pipe, a second brake oil pipe and a third brake oil pipe, the second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second reservoir an oil chamber and a second spring, the second brake lever is pivotally connected to the second cylinder, the second plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second a plunger, the second plunger divides the inner space of the second cylinder into a fourth oil chamber, a fifth oil chamber and a sixth oil chamber, the fifth oil chamber communicates with the second oil storage chamber, the The second spring is accommodated in the fourth oil chamber and can reset the actuated second plunger. The third brake master cylinder includes a third brake lever, a third plunger, a third cylinder, a third an oil cup and a push rod, the third cylinder is fixed on a frame and connected to the oil cup, the third brake lever is pivotally connected to the frame, and the third plunger is installed on the third cylinder In the body, the third brake lever is connected to the third plunger by the push rod; wherein, the two ends of the sixth oil chamber have a difference in cross-sectional area in the second plunger, one end has a large cross-sectional area, and the other end is Small cross-sectional area, and the outer wall of the cylinder of the sixth oil chamber is provided with a communication hole for hydraulic oil to enter and exit, when the sixth oil chamber has oil pressure, it will force the second plunger to move; An oil chamber is connected to the first brake caliper via the first brake oil pipe, the third oil chamber and the fourth oil chamber are connected to the second brake caliper via the second brake oil pipe, and the sixth oil chamber is connected to the second brake caliper via the second brake oil pipe. The third brake oil pipe is connected to the third cylinder block. A linked brake system with the brake master cylinder of claim 1 or claim 2, comprising the first brake master cylinder, a second brake master cylinder, a third brake master cylinder, a first brake caliper, a second brake master cylinder Brake calipers, a first brake oil pipe, a second brake oil pipe and a third brake oil pipe, the second brake master cylinder includes a second brake lever, a second plunger, a second cylinder, a second reservoir an oil chamber and a second spring, the second brake lever is pivotally connected to the second cylinder, the second plunger is installed in the second cylinder, the second brake lever can directly or indirectly push the second a plunger, the second plunger divides the inner space of the second cylinder into a fourth oil chamber, a fifth oil chamber and a sixth oil chamber, the fifth oil chamber communicates with the second oil storage chamber, the The second spring is accommodated in the fourth oil chamber and can reset the actuated second plunger. The third brake master cylinder includes a third brake lever, a third plunger, a third cylinder, a third an oil cup and a push rod, the third cylinder is fixed on a frame and connected to the oil cup, the third brake lever is pivotally connected to the frame, and the third plunger is installed on the third cylinder In the body, the third brake lever is connected to the third plunger by the push rod; wherein, the two ends of the sixth oil chamber have a difference in cross-sectional area in the second plunger, one end has a large cross-sectional area, and the other end is Small cross-sectional area, and the outer wall of the cylinder of the sixth oil chamber is provided with a communication hole for hydraulic oil to enter and exit, when the sixth oil chamber has oil pressure, it will force the second plunger to move; An oil chamber is connected to the first brake caliper by the first brake oil pipe, the fourth oil chamber is connected to the second brake caliper by the second brake oil pipe, the third oil chamber and the sixth oil chamber are connected by the The third brake oil pipe is connected to the third cylinder block.

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