CN201056204Y - Hydraulic brake system - Google Patents

Abstract

A hydraulic brake system comprises a brake master cylinder, brake calipers and an oil delivery pipe. The brake master cylinder is provided with an oil storage tank, a first oil chamber, a second oil chamber, a channel, a first plunger, a second plunger, a first one-way leather cup, a second one-way leather cup, a first elastic element and a second elastic element. The passage is located between the first oil chamber and the second oil chamber. The oil storage groove is communicated with the first oil chamber and the second oil chamber through a channel. The first plunger is disposed in the first oil chamber. The second plunger is disposed in the second oil chamber. The first one-way packing cup is sleeved on the first plunger. The second one-way leather cup is sleeved on the second plunger. The first elastic element is connected between the first plunger and the second plunger. The second elastic element is connected between the second plunger and the inner wall of the second oil chamber. The oil delivery pipe is communicated between the second oil chamber and the brake caliper. The utility model discloses make during the unable infiltration brake oil such as oil blanket of external air, can effectively prevent the external air infiltration, ensure hydraulic braking system's braking effect.

Description

hydraulic brake system

technical field

The utility model relates to a hydraulic brake system, in particular to a hydraulic brake system which can prevent outside air from infiltrating.

Background technique

Please refer to FIG. 1 , a conventional hydraulic braking system 1 is mainly composed of a brake master cylinder 10 , a brake caliper 30 and an oil delivery pipe 50 .

The brake master cylinder 10 includes an oil storage tank 11, a first oil chamber 12, a second oil chamber 13, a first passage 14, a second passage 15, a plunger 16, a first one-way leather cup 17, A second one-way leather cup 18 , a spring 19 , a clasp 20 and a handle 21 . A brake oil (not shown) is contained in the oil storage tank 11 , the first oil chamber 12 and the second oil chamber 13 . The oil storage tank 11 communicates with the first oil chamber 12 and the second oil chamber 13 through the first passage 14 and the second passage 15 respectively. The plunger 16 is disposed in the first oil chamber 12 and the second oil chamber 13 in a movable manner. The first one-way cup 17 is sheathed on the plunger 16 , and the first one-way cup 17 abuts against an inner wall 12 a of the first oil chamber 12 . The second one-way cup 18 is also sheathed on the plunger 16 , and the second one-way cup 18 abuts against an inner wall 13 a of the second oil chamber 13 and is located between the first channel 14 and the second channel 15 . It is worth noting that with the setting of the second one-way cup 18, the brake oil can flow from the first oil chamber 12 to the second oil chamber 13 through the second one-way cup 18, but it cannot flow from the second one-way cup 18 to the second oil chamber 13. The oil chamber 13 flows into the first oil chamber 12 via the second one-way cup 18 . The spring 19 is disposed in the second oil chamber 13 , and the spring 19 is connected between the plunger 16 and the inner wall 13 a of the second oil chamber 13 . In addition, the spring 19 may first have a pre-compressed elastic force. The buckle 20 is disposed on the end 12 b of the first oil chamber 12 , and the buckle 20 abuts against the plunger 16 to position the plunger 16 in the first oil chamber 12 and the second oil chamber 13 . Here, the plunger 16 can be abutted against the buckle 20 by the pre-compressed elastic force provided by the spring 19 . The handle 21 is connected to the plunger 16 and can be used to drive the plunger 16 to move in the first oil chamber 12 and the second oil chamber 13 .

The brake caliper 30 has a cylinder body 31 , a third oil chamber 32 , a piston 33 , an oil seal 34 , a first brake pad 35 , a second brake pad 36 and a disc 37 . The third oil chamber 32 is located in the cylinder body 31 , and brake oil is also contained in the third oil chamber 32 . The piston 33 is disposed in the cylinder 31 in a movable manner, and the piston 33 is connected to the third oil chamber 32 . The oil seal 34 is disposed in the cylinder body 31 , and the oil seal 34 abuts against the outer wall of the piston 33 to prevent the brake oil in the third oil chamber 32 from flowing out from between the cylinder body 31 and the piston 33 . The first brake pad 35 is connected to the piston 33 . The second brake pad 36 is connected to the cylinder body 31 , and the second brake pad 36 is opposite to the first brake pad 35 . The disc 37 is disposed between the first brake pad 35 and the second brake pad 36 .

The oil delivery pipe 50 is connected between the second oil chamber 13 of the master brake cylinder 10 and the third oil chamber 32 of the brake caliper 30 .

When the handle 21 drives the plunger 16 to move, the second one-way leather cup 18 sleeved on the plunger 16 will pass through the second channel 15 to push the brake oil in the second oil chamber 13 to the brake through the oil delivery pipe 50 The third oil chamber 32 of the caliper 30 . At this time, the piston 33 of the brake caliper 30 can be pushed, so that the first brake pad 35 and the second brake pad 36 clamp the rotating disc 37, thereby achieving a braking effect. On the other hand, when the braking ends, the handle 21 and the plunger 16 can move to their original positions due to the elastic restoring force provided by the spring 19, and the first brake pad 35 and the second brake pad 36 will be moved to their original positions by the disc. The rotation deflection of 37 pushes piston 33 slightly. At this time, excess brake oil will flow back into the oil storage tank 11 through the oil delivery pipe 50 , the second oil chamber 13 and the second channel 15 .

However, when the hydraulic braking system 1 is not in operation, the pressure of the brake oil in the oil storage tank 11, the first oil chamber 12, the second oil chamber 13, the oil delivery pipe 50 and the third oil chamber 32 will approach the same as the external atmospheric pressure, This will easily cause outside air to seep into the brake fluid through the oil seal 34 and the like, thus affecting the braking effect. In addition, since the second one-way cup 18 will repeatedly pass through the second passage 15 with the plunger 16 , the second one-way cup 18 is often worn due to friction with the wall of the second passage 15 .

Utility model content

The purpose of the utility model is to provide a hydraulic brake system, which can effectively prevent outside air from infiltrating, so as to ensure the braking effect.

The utility model basically adopts the features described in detail below in order to solve the above-mentioned problems. That is to say, the utility model includes a brake master cylinder, which has an oil storage tank, a first oil chamber, a second oil chamber, a channel, a first plunger, a second plunger, a first one-way leather cup, a second one-way leather cup, a first elastic element, a second elastic element, a buckle and a handle, wherein, the oil storage tank, the first oil chamber and the second oil chamber contain a brake Oil, the passage is located between the first oil chamber and the second oil chamber, the oil storage tank communicates with the first oil chamber and the second oil chamber through the passage, and the first plunger is set in a movable manner In the first oil chamber, the second plunger is set in the second oil chamber in a movable manner, and the first one-way leather cup is sleeved on the first plunger and abuts against the first oil chamber. A first inner wall of the chamber, the second one-way leather cup is sleeved on the second plunger and abutted against a second inner wall of the second oil chamber, the first elastic element is connected to the first post Between the plug and the second plunger, the second elastic element is connected between the second plunger and the second inner wall, the retaining ring is arranged on one end of the first oil chamber, and abuts against the a first plunger for positioning the first plunger in the first oil chamber, and the handle connected to the first plunger for driving the first plunger and the second plunger to move; a a brake caliper; and an oil delivery pipe connected between the second oil chamber and the brake caliper.

Meanwhile, according to the hydraulic brake system of the present invention, the brake oil in the oil storage tank and the first oil chamber flows into the second oil chamber through the second one-way cup.

The utility model has the advantage that outside air cannot penetrate into the brake oil through the oil seal and the like, so that the braking effect of the hydraulic brake system can be ensured. In addition, the second one-way leather cup is not easy to wear.

Description of drawings

FIG. 1 is a partial cross-sectional schematic view showing a conventional hydraulic brake system;

FIG. 2 is a partial cross-sectional schematic view showing the hydraulic braking system of the present invention.

Symbol Description

1. 100～hydraulic brake system

10. 110～brake master cylinder

11, 111 ~ oil storage tank

12, 112 ~ the first oil chamber

12a, 13a～inner wall

12b, 112b～end

13, 113 ~ the second oil chamber

14～the first channel

15～Second channel

16～Plunger

17. 117～the first one-way leather cup

18, 118 ~ the second one-way cup

19～spring

20, 121 ~ Buckle

21, 122 ~ handle

30, 130～brake calipers

31, 131 ~ cylinder block

32, 132 ~ the third oil chamber

33, 133 ~ piston

34, 134～oil seal

35, 135 ~ the first brake pad

36, 136 ~ the second brake pad

37, 137～disc

50, 150～oil pipeline

112a～the first inner wall

113a～second inner wall

114～Channel

115～the first plunger

116 ~ the second plunger

119～the first elastic element

120～second elastic element

Detailed ways

Preferred embodiments of the present utility model are described below in conjunction with the drawings.

Please refer to FIG. 2 , the hydraulic braking system 100 of this embodiment mainly includes a master brake cylinder 110 , a brake caliper 130 and an oil delivery pipe 150 .

The brake master cylinder 110 has an oil storage tank 111, a first oil chamber 112, a second oil chamber 113, a channel 114, a first plunger 115, a second plunger 116, a first one-way leather cup 117 , A second one-way leather cup 118 , a first elastic element 119 , a second elastic element 120 , a buckle 121 and a handle 122 .

A brake oil (not shown) is contained in the oil storage tank 111 , the first oil chamber 112 and the second oil chamber 113 . The passage 114 is located between the first oil chamber 112 and the second oil chamber 113 , and the oil storage tank 111 communicates with the first oil chamber 112 and the second oil chamber 113 through the passage 114 .

The first plunger 115 is disposed in the first oil chamber 112 in a movable manner, and the second plunger 116 is disposed in the second oil chamber 113 in a movable manner.

The first one-way cup 117 is sheathed on the first plunger 115 , and the first one-way cup 117 abuts against a first inner wall 112 a of the first oil chamber 112 . The second one-way cup 118 is sheathed on the second plunger 116 , and the second one-way cup 118 abuts against a second inner wall 113 a of the second oil chamber 113 . It should be noted that with the arrangement of the second one-way cup 118, the brake oil can flow from the first oil chamber 112 and/or the oil storage tank 111 to the second oil chamber 113 through the second one-way cup 118, but It cannot flow from the second oil chamber 113 to the first oil chamber 112 and/or the oil storage tank 111 through the second one-way cup 118 .

The first elastic element 119 is connected between the first plunger 115 and the second plunger 116 , and the second elastic element 120 is connected between the second plunger 116 and the second inner wall 113 a. In particular, the first elastic element 119 and the second elastic element 120 may respectively have a pre-compressed elastic force.

The retaining ring 121 is disposed on one end 112 b of the first oil chamber 112 , and the retaining ring 121 abuts against the first plunger 115 to position the first plunger 115 in the first oil chamber 112 . Here, the first plunger 115 can be abutted against the buckle 121 by the pre-compression elastic force provided by the first elastic element 119 .

The handle 122 is connected to the first plunger 115 and can be used to drive the first plunger 115 and the second plunger 116 to move.

The brake caliper 130 has a cylinder body 131 , a third oil chamber 132 , a piston 133 , an oil seal 134 , a first brake pad 135 , a second brake pad 136 and a disc 137 .

The third oil chamber 132 is located in the cylinder body 131 , and the third oil chamber 132 also contains brake oil. The piston 133 is disposed in the cylinder body 131 in a movable manner, and the piston 133 is connected to the third oil chamber 132 . The oil seal 134 is disposed in the cylinder body 131 , and the oil seal 134 abuts against the outer wall of the piston 133 to prevent the brake fluid in the third oil chamber 132 from flowing out from between the cylinder body 131 and the piston 133 . The first brake pad 135 is connected to the piston 133 . The second brake pad 136 is connected to the cylinder body 131 , and the second brake pad 136 is opposite to the first brake pad 135 . The disc 137 is disposed between the first brake pad 135 and the second brake pad 136 .

The oil delivery pipe 150 is connected between the second oil chamber 113 of the master brake cylinder 110 and the third oil chamber 132 of the brake caliper 130 .

When the handle 122 drives the first plunger 115 to move, the second plunger 116 will also move accordingly due to the push of the first elastic element 119 . At this time, the brake oil in the second oil chamber 113 (or even the brake oil in the oil storage tank 111 and the first oil chamber 112 ) is pushed to the third oil chamber 132 of the brake caliper 130 through the oil delivery pipe 150 . Therefore, the piston 133 of the brake caliper 130 can be pushed, so that the first brake pad 135 and the second brake pad 136 clamp the rotating disc 137, thereby achieving a braking effect. On the other hand, when the braking ends, the handle 122, the first plunger 115 and the second plunger 116 can move to their original positions due to the elastic restoring force provided by the first elastic member 119 and the second elastic member 120 , and the first brake pad 135 and the second brake pad 136 will push the piston 133 slightly due to the rotation deflection of the disc 137 . At this time, excess brake oil will flow back into the second oil chamber 113 through the oil delivery pipe 150 .

When the hydraulic brake system 100 is not in operation, due to the pushing effect of the first elastic member 119 on the second plunger 116, the brake oil in the second oil chamber 113, the oil delivery pipe 150 and the third oil chamber 132 will have a residual pressure, and the residual pressure in the brake oil is not enough to push the piston 133 of the brake caliper 130 . As mentioned above, since the residual pressure in the brake fluid is higher than the atmospheric pressure, outside air cannot penetrate into the brake fluid through the oil seal 134 , so that the braking effect of the hydraulic brake system 100 can be ensured. In addition, since the second one-way cup 118 only passes through the channel 114 under a low-pressure environment at most, the second one-way cup 118 is less prone to wear.

Claims (2)

1. A hydraulic braking system, comprising: A brake master cylinder with an oil storage tank, a first oil chamber, a second oil chamber, a channel, a first plunger, a second plunger, a first one-way cup, a second one-way A leather cup, a first elastic element, a second elastic element, a buckle and a handle are characterized in that the oil storage tank, the first oil chamber and the second oil chamber contain a brake oil, and the channel is located at the Between the first oil chamber and the second oil chamber, the oil storage tank communicates with the first oil chamber and the second oil chamber through the passage, and the first plunger is set in the first oil chamber in a movable manner , the second plunger is set in the second oil chamber in a movable manner, the first one-way leather cup is sleeved on the first plunger, and abuts against a first inner wall of the first oil chamber , the second one-way leather cup is sleeved on the second plunger and abuts against a second inner wall of the second oil chamber, the first elastic element is connected to the first plunger and the second column between the plugs, the second elastic element is connected between the second plunger and the second inner wall, the retaining ring is arranged on one end of the first oil chamber, and abuts against the first plunger for to locate the first plunger in the first oil chamber, and the handle is connected to the first plunger for driving the first plunger and the second plunger to move; a brake caliper; and An oil delivery pipe communicates between the second oil chamber and the brake caliper. 2. The hydraulic braking system according to claim 1, wherein the brake oil in the oil storage tank and the first oil chamber flows into the second oil chamber through the second one-way cup.

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