CN217805119U - Dustproof disc brake and bicycle with same - Google Patents

Abstract

The utility model discloses a dustproof dish is stopped and bicycle, dustproof dish is stopped and is included: casing, hydro-cylinder piston assembly, seal assembly, rocking arm and dish mechanism of stopping inject the hydro-cylinder in the casing, and seal assembly includes cooperation sealing member and the jump ring in hydro-cylinder mouth department, and the sealing member cover is established the ball screw rod of hydro-cylinder piston assembly and all is sealed the cooperation with the lateral wall and the ball screw rod of hydro-cylinder, and the jump ring card is established in the sealing member outside, and the rocking arm links to each other with the part that the ball screw rod is located the hydro-cylinder outside for drive ball screw rod removes in to the hydro-cylinder, and the dish mechanism of stopping is used for realizing brake. Seal assembly avoids the dish to stop along with the extension of live time, and the dust sneaks into the brake fluid in the hydro-cylinder pollutes the hydro-cylinder to guarantee the brake effect, the extension dish is stopped life, compares prior art, and its dustproof construction is simple, through the metal jump ring and can further combine the metal shim to fix the sealing member, has that the equipment is convenient, the structure is firm, the leakproofness is good and with low costs is showing the advantage.

Description

Dustproof disc brake and bicycle with same

Technical Field

The utility model relates to a brake technical field especially relates to a dustproof dish is stopped and is had bicycle that this dustproof dish was stopped.

Background

The bicycle is a familiar riding tool, and the brake is one of necessary structures of the bicycle and generally comprises three types, namely a road clamp, a V brake and a disc brake. Wherein, the control effect of the disc brake is more exquisite and can not be influenced especially in rainy days. When the dish was stopped and is operated, the rocking arm drove the ball screw and move to the hydro-cylinder, and tiny debris such as dust can influence the brake effect after long-term the use in sneaking into the hydro-cylinder through the gap easily under the drive of ball screw, cause the dish to stop the inefficacy even, influence product life. The existing dustproof structure has the defects of high complexity of processing and assembling, insufficient dustproof effect and the like due to the structural form of gluing and fixing or adopting a movable free body.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a dustproof dish is stopped, can effectively avoid the dust to get into the hydro-cylinder. The embodiment of the other aspect of the utility model provides a bicycle that has above-mentioned dustproof dish to stop is still provided.

The embodiment of the utility model provides a dustproof dish is stopped and is included: a housing defining a cylinder within the housing; the oil cylinder piston assembly comprises a piston, a spherical screw and a spring, the piston is matched in the oil cylinder and is arranged in a sliding manner along the depth direction of the oil cylinder, the spring is matched between the bottom of the oil cylinder and the piston, and a ball head of the spherical screw extends into the oil cylinder through an oil cylinder opening of the oil cylinder and abuts against the piston so as to compress brake oil in the oil cylinder by pushing and pressing the piston; the sealing component comprises a sealing element and a clamp spring which are matched at the opening of the oil cylinder, the sealing element is sleeved on the spherical screw rod and is in sealing fit with the side wall of the oil cylinder and the spherical screw rod, and the clamp spring is clamped on the outer side of the sealing element; the rocker arm is connected with the part of the spherical screw rod, which is positioned outside the oil cylinder, and is used for driving the spherical screw rod to move into the oil cylinder; and the disc brake mechanism is used for braking under the hydraulic action of the brake oil.

Optionally, the sealing element is a rubber mat, a through hole is formed in the middle of the rubber mat, and the spherical screw penetrates through the through hole.

Optionally, the seal assembly further includes a support member, and the support member is located on one side of the seal member far away from the clamp spring and abuts against the seal member.

Optionally, the support is a metal shim.

Optionally, a limiting portion is arranged on a side wall of the oil cylinder, the limiting portion is provided with a limiting surface facing the oil cylinder opening, and the supporting member abuts against the limiting surface.

Optionally, the disc brake mechanism includes a brake lining clip, a first brake lining, a second brake lining, a first piston and a second piston, the first brake lining and the second brake lining are respectively clamped on two sides of the brake lining clip, the first piston abuts against one side of the first brake lining, which is far away from the brake lining clip, the second piston abuts against one side of the second brake lining, which is far away from the brake lining clip, and the first piston and the second piston are slidably disposed so as to push the first brake lining and the second brake lining to approach each other.

The embodiment of the utility model provides a bicycle, include: a frame including a brake lever; the dustproof disc brake and the brake cable are arranged at any position, the dustproof disc brake is connected with the frame, one end of the brake cable is connected with the brake handle, and the other end of the brake cable is connected with the rocker arm.

The embodiment of the utility model provides a dustproof dish is stopped including being used for sealed seal assembly, avoids the dish to stop along with the extension of live time, and the dust sneaks into the brake fluid that the hydro-cylinder pollutes in the hydro-cylinder to guarantee the brake effect, prolong the dish and stop life. Compare prior art, its dustproof construction is simple, through the metal jump ring and can further combine the metal shim to fix sealing member (dustproof cushion), has the equipment convenience, the structure stabilizes, the leakproofness is good and with low costs is showing the advantage.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic view of a disc brake structure provided by the embodiment of the present invention.

Fig. 2 is an exploded view of the disc brake provided by the embodiment of the present invention.

Fig. 3 is a partial sectional view (sealing assembly) of the disc brake provided by the embodiment of the present invention.

Fig. 4 is a schematic structural view of a disc brake mechanism provided by the embodiment of the present invention.

Fig. 5 is a sectional view of a disc brake (disc brake mechanism) provided by the embodiment of the present invention.

Fig. 6 is a cross-sectional view (oil cylinder) of the disc brake provided by the embodiment of the present invention.

Reference numerals are as follows:

the brake device comprises a disc brake 100, a shell 1, an oil cylinder 11, a limiting surface 111, a first piston clamping groove 12, a second piston clamping groove 13, a first shell 14, a second shell 15, an oil cylinder piston assembly 2, a piston 21, a spherical screw 22, a spring 23, a rubber ring 24, a sealing element 31, a clamp spring 32, a metal gasket 33, a rocker arm 4, a disc brake mechanism 5, a brake pad elastic sheet clamp 51, a first brake pad 52, a second brake pad 53, a first piston 54, a second piston 55, a first piston rubber ring 56, a second piston rubber ring 57, a bolt 6, a copper shaft 71, a steel sleeve 72 and a brake line adjuster 8.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The disc brake 100 and the bicycle having the disc brake 100 according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the described embodiment, the disc brake 100 is adapted for use as a brake for a bicycle.

The bicycle comprises a frame, a disc brake 100 and a brake cable, wherein the frame comprises a brake handle, and the disc brake 100 is arranged on the frame. As shown in fig. 1-6, the embodiment of the present invention provides a disc brake 100, which comprises a housing 1, a cylinder piston assembly 2, a sealing assembly, a rocker arm 4 and a disc brake mechanism 5. One end of the brake cable is connected with the brake handle, and the other end is connected with the rocker arm 4.

A cylinder 11 is defined within the housing 1. The cylinder-piston assembly 2 includes a piston 21, a ball screw 22, and a spring 23. The piston 21 is matched in the oil cylinder 11 and is arranged in a sliding manner along the depth direction of the oil cylinder 11, and the spring 23 is matched between the bottom of the oil cylinder 11 and the piston 21, namely, one end of the spring 23 is propped against the bottom of the oil cylinder 11, and the other end of the spring is propped against the piston 21. The ball of the ball screw 22 extends into the cylinder 11 through the cylinder opening of the cylinder 11 and abuts against the piston 21 to contract the spring 23 by pushing the piston 21. It will be appreciated that the ball screw 22 and the spring 23 are located on either side of the piston 21. The sealed space defined by the piston 21 and the side wall of the cylinder 11 is filled with brake oil. That is, the ball screw 22 can push the piston 21 to move toward the bottom of the cylinder 11 along the depth direction of the cylinder 11, and the brake oil in the sealed space of the cylinder 11 is pushed out of the cylinder. The spring 23 has a tendency to push the piston 21 and the ball screw 22 outwards to return to their original positions as a result of being compressed, so the spring 23 is able to act as a return.

The sealing assembly comprises a sealing element 31 and a clamp spring 32 which are matched with the oil cylinder opening of the oil cylinder 11, the sealing element 31 is sleeved on the spherical screw 22, and the sealing element 31 is in sealing fit with the side wall of the oil cylinder 11 and the spherical screw 22, so that dust and impurities are prevented from being mixed into the oil cylinder 11 to pollute brake oil, and the brake effect is poor or even loses efficacy. The clamp spring 32 is clamped outside the sealing member 31 to prevent the sealing member 31 from coming out.

The rocker arm 4 is connected with the part of the ball screw 22 outside the oil cylinder 11, and is used for driving the ball screw 22 to move towards the inside of the oil cylinder 11. The disc brake mechanism 5 is arranged in the shell 1 and used for realizing braking. When the brake is operated, the brake cable is pulled by operating the brake handle, the rocker arm 4 is pulled by the brake cable, and the spherical screw 22 is driven to move, so that the disc brake mechanism 5 rubs the disc of the bicycle, and the brake is realized.

The embodiment of the utility model provides a dish is stopped including being used for sealed seal assembly, avoids the dish to stop along with live time's extension, and the dust is sneaked into the brake oil that the hydro-cylinder pollutes in the hydro-cylinder to guarantee the brake effect, the extension dish is stopped life. Compared with the prior art, the dustproof structure is simple, the metal clamp spring can be further combined with the metal gasket to fix the sealing piece (dustproof rubber gasket), and the dustproof rubber gasket has the remarkable advantages of convenience in assembly, stable structure, good sealing property and low cost.

In some embodiments, as shown in fig. 3, the sealing member 31 is a rubber pad, a through hole is formed in the middle of the rubber pad, and the ball screw 22 passes through the through hole. Optionally, the sealing member 31 is a silicone pad or a rubber pad. The inner side of the rubber mat is in interference fit with the spherical screw 22 to realize sealing fit with the spherical screw 22, and the outer side of the rubber mat is in interference fit with the side wall of the oil cylinder 11 to realize sealing fit with the side wall of the oil cylinder 11. It should be noted that the rubber pad has a certain deformability, which does not affect the movement of the ball screw 22, and can effectively prevent dust and impurities from entering the oil cylinder 11.

In some embodiments, the sealing assembly further comprises a support located on a side of the seal 31 remote from the circlip 32, and abutting the seal 31. The supporting piece is used for supporting the sealing piece 31 and preventing the sealing piece 31 from deforming too much to influence the sealing performance.

By way of example, in the embodiment shown in fig. 3, the support member is a metal washer 33, and the metal washer 33 is fitted over the ball screw 22. The outer side surface (surface facing the cylinder opening of the cylinder 11) of the metal gasket 33 abuts against the inner side (surface distant from the cylinder opening of the cylinder 11) of the seal 31 to support the seal 31. In addition, the metal washer 33 can also be used to limit the movement range of the ball screw 22, i.e. the movement range of the ball screw 22 in the direction perpendicular to the axial direction thereof, so as to avoid that the ball screw 22 moves too much in the direction perpendicular to the axial direction thereof, which affects the structural stability of the disc brake 100.

In order to facilitate the position limitation of the sealing assembly, as shown in fig. 3, the side wall of the oil cylinder 11 is provided with a position limitation portion, the position limitation portion has a position limitation surface 111 facing the oil cylinder opening, and a surface of the metal gasket 33 far away from the sealing element 31 abuts against the position limitation surface 111. Specifically, as shown in fig. 3, a step portion is formed in the oil cylinder 11, the step portion has a step surface, and the step surface is a limit surface 111, when the seal assembly is mounted, the metal gasket 33 and the seal member 31 are sequentially installed into the oil cylinder 11 through the cylinder opening of the oil cylinder 11, the metal gasket 33 is abutted against the limit surface 111, the seal member 31 is abutted against the metal gasket 33, and then the snap spring 32 is clamped outside the seal member 31.

As shown in fig. 3, the ball of the ball screw 22 is inserted into the piston 21, and the piston 21 is provided with a semicircular groove in which a part of the ball screw 22 is fitted and fitted. As shown in fig. 2, an annular groove is formed in the circumferential surface of the piston 21, the cylinder piston assembly 2 further includes a rubber ring 24, the rubber ring 24 is sleeved on the piston 21 and is fitted in the annular groove, and the rubber ring 24 is favorable for improving the sealing performance between the cylinder piston assembly 2 and the side wall of the cylinder 11, so that brake oil inside the cylinder 11 is prevented from leaking from a gap between the piston 21 and the side wall of the cylinder 11.

As shown in fig. 1, the top end of the ball screw 22 extending out of the oil cylinder 11 is movably connected with the rocker arm 4, one end of the rocker arm 4 is movably connected with the housing 1, and the rocker arm 4 drives the ball screw 22 to move in the oil cylinder 4 by using the housing 1 as a support. Specifically, as shown in fig. 1 and 2, a mounting hole is formed in the middle of the rocker arm 4, a copper shaft 71 movably connected with the rocker arm 4 is arranged in the mounting hole, and the ball screw 22 is in threaded connection with the copper shaft 71, so that the movable connection with the rocker arm 4 is realized. The tail end of the rocker arm 4 is provided with a mounting hole, a steel sleeve 72 movably connected with the rocker arm 4 is arranged in the mounting hole, one end of the steel sleeve 72 penetrates through the shell 1 and then is inserted into the mounting hole, and the other end of the mounting hole is inserted into a bolt and connected with the steel sleeve 72, so that the rocker arm 4 and the shell 1 can be rotatably connected.

As shown in fig. 4 and 5, the disc brake mechanism 5 includes a brake lining spring clip 51, a first brake lining 52, a second brake lining 53, a first piston 54 and a second piston 55, the first brake lining 52 and the second brake lining 53 are respectively clamped on two sides of the brake lining spring clip 51, the first piston 54 abuts against one side of the first brake lining 52 far away from the brake lining spring clip 51, the second piston 55 abuts against one side of the second brake lining 53 far away from the brake lining spring clip 51, and the first piston 54 and the second piston 55 are slidably disposed so as to push the first brake lining 52 and the second brake lining 53 to approach. As shown in fig. 2, bolt holes are formed in the pad clip 51, the first pad 52 and the second pad 53, and the bolt 6 penetrates through the bolt holes of the pad clip 51, the first pad 52 and the second pad 53.

Specifically, as shown in fig. 5, a first piston clamping groove 12 and a second piston clamping groove 13 are formed in the housing 1. A first piston 54 is disposed in the first piston catch 12 and a second piston 55 is disposed in the second piston catch 13. An oil path for communicating the oil cylinder 11, the first piston clamping groove 12 and the second piston clamping groove 13 is arranged in the shell 1, and brake oil in the oil cylinder 11 is extruded and flows out to enter the first piston clamping groove 12 and the second piston clamping groove 13 along the oil path, so that the first piston clamping groove 12 and the second piston clamping groove 13 are pushed to move oppositely.

As shown in fig. 4 and 5, the disc brake mechanism 5 further includes a first piston rubber ring 56 and a second piston rubber ring 57, the first piston rubber ring 56 is sleeved on the first piston 54, and the second piston rubber ring 57 is sleeved on the second piston 55. The first piston rubber ring 56 and the second piston rubber ring 57 play a role of sealing, and brake oil is prevented from leaking.

When the disc brake 100 works, the rocker arm 6 drives the oil cylinder piston assembly 2 to extrude brake oil in the oil cylinder 11, so that the brake oil flows out to enter the first piston clamping groove 12 and the second piston clamping groove 13 along an oil path, the first piston 54 and the second piston 55 are pushed to move oppositely, the first piston 54 and the second piston 55 extrude the first lining 52 and the second lining 53, the first lining 52 and the second lining 53 are drawn together, and the first lining 52 and the second lining 53 rub against a disc of a bicycle to realize brake.

Further, casing 1 includes first casing 14 and second casing 15, inject hydro-cylinder 11 in first casing 14, the cooperation of dish mechanism 5 of stopping is between first casing 14 and second casing 15, compare second casing 15, first casing 14 is close to the bicycle frame setting, thereby make the hydro-cylinder 11 of dish 100 of stopping, hydro-cylinder piston assembly 2 and rocking arm 4 all be close to the bicycle frame, can avoid the brake line distortion of acting as go-between, improve the smoothness of acting as go-between of brake line greatly, realize the inboard purpose of walking the line.

As shown in fig. 1, the outer side surface of the first housing 14 and the outer side surface of the second housing 15 are planes parallel to each other, and after the disc brake 100 is mounted on the bicycle, the outer side surface of the first housing 14 and the outer side surface of the second housing 15 are parallel to the frame. The embodiment of the utility model provides a with first casing 14 and second casing 15 design for planar structure, simple structure, the processing of being convenient for, it is with low costs.

As shown in fig. 1, the disc brake 100 further includes a brake cable adjuster 8, and the brake cable adjuster 8 is disposed at the front side of the first housing 14. The brake cable is connected to the end of the rocker arm 4 through a brake cable adjuster 8. The brake cable regulator 8, the oil cylinder 11 and the rocker arm 4 are parallel to the frame of the bicycle on the plane, so that the brake cable, the brake cable regulator 8, the oil cylinder 11 and the rocker arm 4 are located on the same plane, the winding problem can be reduced, the smoothness of the brake cable is further improved, the inner side wiring is improved, and the brake effect is optimized.

The embodiment of the utility model provides a following detailed description's theory of operation that dish was stopped: in use, the housing 1 is attached to a bicycle frame with the first housing 14 adjacent the frame, and one end of the brake cable is connected to a brake lever and the other end passes through the brake cable adjuster 8 and is fixedly attached to the free end of the rocker arm 4. When a vehicle owner applies force to a brake handle, the force is transmitted to the rocker arm 4 through a brake cable, the rocker arm 4 is stressed to move downwards, the spherical screw 22 below the rocker arm 4 drives the piston 21 to extrude brake oil in the oil cylinder 11, the pressure inside the oil cylinder 11 is increased, the brake oil flows into the first piston clamping groove 12 and the second piston clamping groove 13, the first piston 54 and the second piston 55 are pushed to move oppositely, and therefore the first lining piece 52 and the second lining piece 53 are pushed to generate friction on a disc on the bicycle, and brake is achieved; when the owner stops applying force to the handle, the piston 21 and the ball screw 22 are restored to the original position under the elastic force of the spring 23, and meanwhile, the brake pad clip 51, the first brake pad 52, the second brake pad 53, the first piston 54 and the second piston 55 are also restored to the original position, and the braking force is stopped being generated.

In the working process of the disc brake 100, the sealing assembly has the function of preventing dust from mixing into the brake oil in the oil cylinder 11 to pollute the oil cylinder 11, so that the brake effect is ensured, and the service life of the disc brake 100 is prolonged. The embodiment of the utility model provides a dish 100 of stopping has the advantage that the function is reliable, long service life.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The utility model provides a dustproof dish is stopped, its characterized in that includes:

a housing defining a cylinder within the housing;

the oil cylinder piston assembly comprises a piston, a spherical screw and a spring, the piston is matched in the oil cylinder and is arranged in a sliding manner along the depth direction of the oil cylinder, the spring is matched between the bottom of the oil cylinder and the piston, and a ball head of the spherical screw extends into the oil cylinder through an oil cylinder opening of the oil cylinder and abuts against the piston so as to compress brake oil in the oil cylinder by pushing and pressing the piston;

the sealing component comprises a sealing element and a clamp spring which are matched at the opening of the oil cylinder, the sealing element is sleeved on the spherical screw rod and is in sealing fit with the side wall of the oil cylinder and the spherical screw rod, and the clamp spring is clamped on the outer side of the sealing element;

the rocker arm is connected with the part of the spherical screw rod, which is positioned outside the oil cylinder, and is used for driving the spherical screw rod to move into the oil cylinder;

and the disc brake mechanism is used for braking under the hydraulic action of the brake oil.

2. The dustproof disc brake of claim 1,

the sealing element is a rubber mat, a through hole is formed in the middle of the rubber mat, and the spherical screw penetrates through the through hole.

3. The dustproof disc brake of claim 1,

the sealing assembly further comprises a supporting piece, and the supporting piece is located on one side, far away from the clamp spring, of the sealing piece and abuts against the sealing piece.

4. The dust-proof disc brake of claim 3,

the supporting piece is a metal gasket.

5. The dustproof disc brake of claim 3 or 4,

the lateral wall of hydro-cylinder is equipped with spacing portion, spacing portion has the orientation the spacing face of hydro-cylinder mouth, support piece end is in on the spacing face.

6. The dust-proof disc brake of claim 1,

the disc brake mechanism comprises a brake lining spring clip, a first brake lining, a second brake lining, a first piston and a second piston, wherein the first brake lining and the second brake lining are respectively clamped on two sides of the brake lining spring clip, the first piston is abutted against one side, away from the brake lining spring clip, of the first brake lining, the second piston is abutted against one side, away from the brake lining spring clip, of the second brake lining, and the first piston and the second piston are slidably arranged so as to push the first brake lining and the second brake lining to be close to each other.

7. A bicycle, comprising:

a frame including a brake lever;

the disc brake is the dustproof disc brake according to any one of claims 1 to 6, the dustproof disc brake is connected with the frame, one end of the brake cable is connected with the brake handle, and the other end of the brake cable is connected with the rocker arm.

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