TWI848601B - Semi-hydraulic disc brake double cylinder adjustment structure - Google Patents

Abstract

The present invention discloses a semi-hydraulic disc brake double-cylinder adjustment structure, comprising: a caliper, a brake group and a brake piston. The caliper comprises a first caliper body and a second caliper body opposite to each other. The caliper is provided with a containing space between the first caliper body and the second caliper body. The first caliper body is provided with a set hole. The set hole is provided with an inner cylinder and a screw hole communicating with the outside. The second caliper body is provided with a containing groove. An oil path is provided between the set hole and the containing groove. The brake group comprises an outer cylinder, An adjusting member and a knob, the outer cylinder is slidably arranged in the assembly hole of the first clamp body, and is sleeved on the outer side of the inner cylinder to form a superimposed double cylinder, the adjusting member is screwed to the screw hole of the first clamp body, one end is provided with a push plate part slidably arranged in the inner cylinder, and the other end is provided with a linkage part combined with the knob, and the brake piston can be slidably accommodated in the receiving groove of the second clamp body; thereby, the convenience of adjustment and space utilization are improved, and it has better flexibility and can achieve diversified use.

Description

Semi-hydraulic disc brake double cylinder adjustment structure

The present invention relates to a disc brake structure, in particular to a semi-hydraulic disc brake double-cylinder adjustment structure.

The function of bicycles has evolved from an initial means of transportation to a tool for special purposes. Therefore, the number of people using bicycles is increasing day by day, and the occasions of users are becoming more and more extensive. The requirements for bicycle functions are becoming more and more stringent, especially the brake system related to safety considerations. Among the brake devices suitable for bicycle operation, the braking performance of the traditional rim brake device (V-type brake) in the past has gradually failed to meet today's needs. Therefore, it is necessary to innovate and develop new brake mechanisms to meet these stringent requirements. Therefore, disc brakes have gradually received attention, and tests have proved that their braking performance is safer and more comfortable than V-type brakes.

Early disc brakes were mainly actuated in two ways: mechanical disc brakes and hydraulic disc brakes. Mechanical disc brakes rely on the tension of the brake cable to cause the brake pads in the caliper to rub against and clamp the disc to produce a braking effect. Hydraulic disc brakes rely on pulling the brake handle to activate the piston inside to compress the oil. The pressure goes directly from the oil pipe to the caliper, thereby pushing the piston in the caliper, driving the brake pads to clamp the disc. The above-mentioned mechanical disc brakes are not only laborious to operate, but also have poor braking stability. The hydraulic disc brake oil pipeline is complicated, which makes it easy to leak oil, and once the hydraulic pipe ruptures, the braking effect is completely lost. Therefore, the industry has developed a semi-hydraulic disc brake, which uses the pressure of the brake handle to pull the swing arm toward the oil chamber through the brake cable, so that the swing arm can link the piston to move horizontally, so that the hydraulic oil stored in the oil chamber can be compressed and squeezed out by the piston to drive the brake pads in the accommodating space to produce a braking effect. When the brake handle is released, the piston can be pushed back to its original position by the elastic element.

However, the known semi-hydraulic disc brake will wear out after a period of use, causing the gap between the brake pad and the disc to gradually increase, resulting in the need to increase the brake handle braking stroke, which increases the braking time and reduces the braking force, making it impossible to stop the bicycle in the shortest time. This will seriously affect the braking performance and safety of the vehicle. Therefore, an adjustment structure is designed to adjust the gap between the brake pad and the disc when the brake pad is worn, thereby improving the braking performance and safety of the vehicle.

However, the known semi-hydraulic disc brake adjustment structure is not only large in size, but can only be adjusted from the side, which makes the adjustment convenience and space utilization poor. The location where it is installed on the frame is greatly limited, and it cannot be used in a diversified manner, which is not practical.

The inventor of the present invention, in view of the above-mentioned shortcomings of the known semi-hydraulic disc brake adjustment structure, came up with the idea of creating this invention. After much discussion and trial production of samples, as well as many revisions and improvements, the present invention was launched.

The present invention provides a semi-hydraulic disc brake double-cylinder adjustment structure, comprising: a caliper, the caliper comprising a first caliper body and a second caliper body opposite to each other, the caliper is provided with a accommodating space for installing a disc between the first caliper body and the second caliper body, the first caliper body is provided with a mounting hole vertically connected to the accommodating space, the mounting hole is provided with an inner cylinder and a screw hole connected to the outside, the first caliper body is provided with an oil cylinder for accommodating oil and a linkage device, one end of the linkage device extends into the oil cylinder, the second caliper body is provided with a accommodating groove on a side facing the accommodating space, an oil path is provided between the mounting hole and the accommodating groove; a brake group, comprising an outer cylinder, An adjusting member and a knob, the outer cylinder is slidably arranged in the assembly hole of the first clamp body and is sleeved on the outer side of the inner cylinder to form a stacked double cylinder, a flow gap is provided between the outer cylinder and the inner cylinder, the flow gap is connected to the oil circuit, the adjusting member has a linkage part and a push plate part located at both ends, an external thread section is provided between the linkage part and the push plate part, the external thread section is screwed to the screw hole of the first clamp body, the push plate part is slidably arranged and accommodated in the inner cylinder, the linkage part passes through the outer side of the screw hole, the knob is combined with the linkage part of the adjusting member, and the adjusting member can be driven by the knob to screw; and a brake piston is slidably accommodated in the receiving groove of the second clamp body.

The main purpose of the semi-hydraulic disc brake double-cylinder adjustment structure of the present invention is that it has a simple structure, a small volume, and can be adjusted from the front, so that the adjustment convenience and space utilization are improved, and the position of the installation on the frame has better flexibility, thereby achieving diversified use.

The following is a further description of the preferred embodiment of the present invention in conjunction with the drawings, in the hope that people familiar with the relevant technology of the present invention can implement it according to the description in this manual.

First, please refer to the first to fifth figures. The semi-hydraulic disc brake double-cylinder adjustment structure of the present invention includes: a caliper 10, a brake group 20, a brake piston 30, a brake cable 40 and two brake pads 50

The clamp 10 comprises a first clamp body 11 and a second clamp body 12 which are opposite to each other. The clamp 10 is provided with a receiving space 13 for mounting the disc 60 between the first clamp body 11 and the second clamp body 12. The first clamp body 11 is provided with an assembly hole 111 which is vertically connected to the receiving space 13. The assembly hole 111 is provided with an inner cylinder 112 and a screw hole 113 which is connected to the outside. A clamp body 11 is provided with a cylinder 14 for containing oil, a brake cable seat 15, a swing arm 16 and a linkage device 17 connected between the cylinder 14 and the swing arm 16. One end of the linkage device 17 extends into the cylinder 14. A groove 121 is provided on one side of the second clamp body 12 facing the accommodating space 13. An oil passage 18 is provided between the assembly hole 111 and the groove 121.

The brake assembly 20 includes an outer cylinder 21, an adjusting member 22, a knob 23 and a locking element 24. The outer cylinder 21 is slidably disposed in the assembly hole 111 of the first clamp body 11 and is sleeved on the outer side of the inner cylinder 112 to form a stacked double cylinder. There is a flow gap G between the outer cylinder 21 and the inner cylinder 112, and the flow gap G is connected to the oil circuit 18. The adjusting member 22 has a linking portion 221 and a push plate portion 222 at both ends. The linking portion 221 is polygonal, and a locking hole 223 is provided at the end of the linking portion 221. 1 and the push plate portion 222 are provided with an external threaded section 224, the external threaded section 224 is screwed to the screw hole 113 of the first clamp body 11, the push plate portion 222 is slidably accommodated in the inner cylinder 112, the linkage portion 221 passes through the outer side of the screw hole 113, the knob 23 is provided with a linkage hole 231, the linkage hole 231 is fitted with the linkage portion 221 of the adjusting member 22, the locking element 24 is screwed and locked with the locking hole 223 of the adjusting member 22, so that the knob 23 is combined with the adjusting member 22, and the adjusting member 22 can be driven by the knob 23 to screw

The brake piston 30 can be slidably accommodated in the receiving groove 121 of the second clamp body 12.

One end of the brake cable 40 passes through the brake cable seat 15 and is connected to the swing arm 16, and the other end is connected to the brake grip on the handlebar of the bicycle. The brake cable 40 can drive the swing arm 16 to swing toward the cylinder 14, and the linkage device 17 can push the oil in the cylinder 14 into the oil circuit 18.

The two brake pads 50 are installed in the accommodation space 13 of the caliper 10, and are respectively in contact with the outer cylinder 21 of the brake assembly 20 and the brake piston 30, and the disc 60 is disposed between the two brake pads 50.

When the present invention is used, as shown in Figures 6 to 8, by pressing the brake handle, the brake cable 40 is used to pull the swing arm 16 to swing toward the cylinder 14, and the oil in the cylinder 14 is pushed through the swing arm 16 and the linkage device 17 to be injected into the assembly hole 111 of the first clamp body 11 and the receiving groove 121 of the second clamp body 12 through the oil passage 18. The outer cylinder 21 and the brake piston 30 of the brake group 20 are pushed toward the receiving space 13 by the oil pressure, driving the second brake pad 50 to brake the disc 60, so as to achieve the purpose of braking.

After the second brake pad 50 is used for a period of time, it will be worn out, causing the gap between the second brake pad 50 and the disc 60 to gradually increase, affecting the braking performance, causing the brake handle to have to increase the braking stroke, so that the braking time is increased and the braking force is reduced. As shown in Figures 9 and 10, the knob 23 of the brake assembly 20 can be directly turned, and the knob 23 can be linked to the adjusting member 22 to rotate and screw, so that the adjusting member 22 moves toward the outer cylinder 21. The push plate portion 222 of the second clamp 22 pushes the oil between the outer cylinder 21 and the inner cylinder 112, pushing the outer cylinder 21 to move toward the accommodating space 13. At the same time, the oil between the outer cylinder 21 and the inner cylinder 112 flows into the receiving groove 121 of the second clamp body 12 through the flow gap G and the oil path 18, pushing the brake piston 30 to move synchronously toward the accommodating space 13, so that an appropriate gap is formed between the second brake pad 50 and the disc 60, thereby achieving the effect of compensating the wear of the second brake pad 50.

The structure of the above specific embodiment can obtain the following benefits:

The semi-hydraulic disc brake double-cylinder adjustment structure of the present invention has a simple structure and a small overall volume, and can be adjusted by turning the knob 23 from the front, so that the convenience and space utilization of adjusting the wear compensation of the second brake pad 50 are improved, and the position of the installation on the frame has better flexibility, thereby achieving diversified use and meeting practicality.

10: Clamp 11: First clamp body 111: Assembly hole 112: Inner cylinder 113: Screw hole 12: Second clamp body 121: Receptacle 13: Accommodation space 14: Oil cylinder 15: Brake cable seat 16: Rocker arm 17: Linkage device 18: Oil circuit 20: Brake group 21: Outer cylinder 22: Adjustment piece 221: Linkage part 222: Push plate part 223: Locking hole 224: External thread section 23: Knob 231: Linkage hole 24: Locking element 30: Brake piston 40: Brake cable 50: Brake pad 60: Disc G: Flow gap

The first figure is a three-dimensional diagram of the present invention.

The second figure is a three-dimensional exploded view of the present invention.

The third figure is a cross-sectional view of the present invention.

The fourth picture is an enlarged view of part A1 of the third picture.

The fifth figure is another cross-sectional view of the present invention.

The sixth figure is a three-dimensional schematic diagram of the braking action of the present invention.

Figure 7 is a cross-sectional view of the present invention for adjusting the gap between the brake pad and the disc.

Figure 8 is an enlarged view of part A2 of Figure 7.

Figure 9 is a cross-sectional diagram of the braking action of the present invention.

The tenth figure is an enlarged view of part A3 of the ninth figure.

10: Clamp

11: First clamp

111: Assembly hole

112: Inner cylinder

113: screw hole

12: Second clamp

14: Oil cylinder

15: Brake cable seat

16: Arm swing

17: Linkage device

20: Brake group

21: Outer cylinder

22: Adjustment parts

221: Linkage Department

222: Pushing plate department

223: Locking hole

224: External thread section

23: Knob

231: Linkage hole

24: Locking element

40: Brake cable

50: Brake pads

Claims (5)

A semi-hydraulic disc brake double-cylinder adjustment structure comprises: a caliper, the caliper comprises a first caliper body and a second caliper body opposite to each other, the caliper is provided with a accommodating space for installing a disc between the first caliper body and the second caliper body, the first caliper body is provided with a set hole vertically connected to the accommodating space, the set hole is provided with an inner cylinder and a screw hole connected to the outside, the first caliper body is provided with an oil cylinder for accommodating oil and a linkage device, one end of the linkage device extends into the oil cylinder, the second caliper body is provided with a groove on a side facing the accommodating space, an oil path is provided between the set hole and the groove; a brake group comprises an outer cylinder, an adjustment The outer cylinder is slidably arranged in the assembly hole of the first clamp body and is sleeved on the outer side of the inner cylinder to form a superimposed double cylinder. There is a flow gap between the outer cylinder and the inner cylinder, and the flow gap is connected to the oil circuit. The regulating member has a linkage part and a push plate part located at both ends. An external thread segment is arranged between the linkage part and the push plate part, and the external thread segment is screwed to the screw hole of the first clamp body. The push plate part is slidably arranged and accommodated in the inner cylinder, and the linkage part passes through the outer side of the screw hole. The knob is combined with the linkage part of the regulating member, and the regulating member can be driven by the knob to screw; and a brake piston is slidably accommodated in the receiving groove of the second clamp body. As described in claim 1, the semi-hydraulic disc brake double-cylinder adjustment structure, wherein the linkage portion of the adjustment member is polygonal, and the knob is provided with a linkage hole, and the linkage hole is sleeved and linked with the linkage portion of the adjustment member. A semi-hydraulic disc brake double-cylinder adjustment structure as described in claim 1, wherein the brake assembly further includes a locking element, a locking hole is provided at the end of the connecting portion of the adjusting element, and the locking hole of the adjusting element is used for screwing and locking the locking element. The semi-hydraulic disc brake double-cylinder adjustment structure as described in claim 1 further includes two brake pads, which are installed in the accommodating space of the caliper and are respectively abutted against the outer cylinder of the brake group and the brake piston, and the disc is arranged between the two brake pads. The semi-hydraulic disc brake double-cylinder adjustment structure as described in claim 1 further includes a brake cable. A brake cable seat and a rocker arm are further provided on the first clamp. The linkage device is connected between the cylinder and the rocker arm. The brake cable passes through the brake cable seat and is connected to the rocker arm.

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