TWI417466B - Cable type hydraulic piston - Google Patents

Description

Steel cable hydraulic piston

The present invention is a cable-type hydraulic piston, which is a design in which a lock brake wire is provided in the piston to prevent it from being improperly pulled out of the oil chamber.

Braking is an important part of bicycle safety. The brakes are often related to the safety of the rider. Especially for the riders who often need to be in high-speed competition, if the brake structure and efficiency are not perfect. Even if the rider's driving skills are high, it is impossible to control the bicycle as desired. The hydraulic brake system can produce good braking force. Therefore, it has been developed and improved by many operators, and many related patent applications have been filed, such as the Republic of China I230228. The patent case of 煞 钳 及 and the Republic of China M385172 "Car caliper structure improvement" patent case...etc.

The hydraulic brake system is operated by pressing the brake handle to send oil from the main pump, and the oil enters the caliper oil chamber of the front and rear wheels, and the piston is pushed against the caliper to hold the disc from the left and right sides, to the caliper and the disc. The discs rub against each other to slow down the speed.

However, since the oil of the hydraulic brake system needs to be supplemented regularly or according to the frequency of use, the hydraulic brake system needs to be precisely adjusted regularly to maintain the braking force, and the whole group needs to be disassembled and reassembled when replacing the system parts. . In view of the extremely troublesome maintenance warranty, the manufacturer developed a steel cable hydraulic composite brake system, a piston in the oil master cylinder, a steel cable on the brake handle, a steel cable through the master pump to connect the piston, press the brake The handle pulls the piston in the main pump with a cable to send the oil to push the caliper to act.

The foregoing design improves the problem of over-complaining the traditional hydraulic brake system, but the problem is that this type of composite brake system is not perfect in the design of the cable and the piston connection, and the cable is easy to be pulled by the brake. Directly from the piston, and can not pull the piston to deliver the master pump oil, resulting in brake failure, so there is a need to improve.

The main object of the present invention is to provide a cable-type hydraulic piston which can solve the problem that the steel cable hydraulic brake system cable is easily loosened from the piston during operation.

In order to achieve the above object, the cable-type hydraulic piston of the present invention comprises an oil chamber, and the inner portion of the oil chamber is axially opened with a two-liquid chamber, and the front end of the oil chamber is an open-ended wire tube corresponding to each of the liquid chambers. The back end also has an opening corresponding to each of the liquid chambers, and each of the line tube, the liquid chamber and the opening is integrally connected, and the first and second oils respectively connected to the liquid chambers are respectively opened on the two sides of the oil chamber Each of the pistons is inserted into the liquid chamber by an opening, and each of the pistons is axially opened with a first wire slot, and each of the pistons is exposed at the end of the oil chamber to lock a bolt, and the internal axis of the bolt is axially Opening a second wire slot, the first and second wire grooves are coaxially connected, and each of the first wire grooves forms a tapered region adjacent to the bolt, and each of the tapered regions is gradually extended from the end of the piston to the head end Each of the tapered fasteners is disposed in the tapered region, and each of the fasteners has an aperture in the axial direction, and at least one of the slits communicating with the orifice is axially cut out, and the buckle is elastic. a margin of deformation, the first slot forms an active area at the front end of the fastener, and the outer diameter of the active area is smaller than the maximum outer diameter of the fastener; A brake wire is threaded through the second wire slot, the living hole, and the first wire slot, and each of the fasteners is bundled around the outer circumference of the brake wire. When the brake wire is pulled out of the wire pipe, each fastener is The tapered area is moved into the active area and elastically compressed so as to bite the brake line and drive the piston to slide in the liquid chamber to squeeze out the oil in the liquid chamber and prevent the brake wire from coming off the line tube.

Based on the above structure, the technical features of the present invention further include:

1. Each of the fasteners is axially annularly cut out to form a plurality of slits communicating with the movable holes, so that the fasteners respectively form a bundle of mouths between the adjacent furrowing grooves, so that the bundled bundles are bundled on the outer circumference of the brake wire. When the brake wire is pulled out of the wire tube, the surrounding beam mouth is radially gathered toward the center of the hole due to space limitation.

2. Each of the beam mouths radially forms an abutting portion toward the living hole, and the enclosed abutting portions limit the diameter of the reducing hole to the same diameter as the brake wire, thereby bribing the brake wire.

3. The surface of each abutting portion has a plurality of notches to form a continuous tooth-like plane for biting the brake wire.

4. The inner end of the piston has an internal thread for bolt locking to change the depth of the bolt and the piston twist lock to adjust the stroke of the brake.

5. The bottom of the oil chamber is provided with at least one locking hole, and the locking hole is locked by a bracket, and is fixed on the bicycle by the bracket; the bracket is L-shaped, and one end is fastened with a positioning ring for bicycle.

The invention is characterized in that the oil chamber is fixed to the frame through the bracket, and the brake wire is connected with the brake handle. When the brake handle is pressed, the brake wire is pulled out of the wire tube, and the fastener is tapered. Move into the active area, the bundle mouth of the fastener is folded from the circumference of the living hole to the center under the space restriction, and the brake line is fixed by the abutting portion. Since the fastener is located in the conical zone, the brake wire is bitten by the fastener. Underneath, it can be prevented from being pulled by the brake handle and not coming out of the piston; and the piston is slid in the liquid chamber of the oil chamber toward the line tube under the integral traction of the brake handle, the brake wire and the fastener, so as to be in the liquid chamber The oil is discharged from the first and second ports on both sides of the oil chamber.

It can be seen that the present invention utilizes the design of the piston space limitation and the compression of the fastener structure to fix the brake wire, thereby achieving the effect of preventing the brake wire from being loosened improperly, and indeed solving the disadvantages of the brake system, so the present invention can be described as a kind of The invention, which is quite practical and progressive, deserves to be promoted by the industry and made public.

The present invention relates to a cable-type hydraulic piston 3, which is shown in the first to seventh figures. The drawings are diagrams of preferred embodiments of the present invention. Please refer to the first figure and the second figure first. As shown in the fifth embodiment, in the embodiment, an oil chamber 1 is disposed, and the inside of the oil chamber 1 is axially opened with a two-liquid chamber 10, and the front end of the oil chamber 1 is axially extended and opened corresponding to each of the liquid chambers 10. The line tube 11 has a opening 12 corresponding to each of the liquid chambers 10, and each of the line tube 11, the liquid chamber 10 and the opening 12 are integrally connected, and the oil chamber 1 is separately opened and The first and second oil ports 13 and 14 communicating with each of the liquid chambers 10 are provided with three locking holes 15 at the bottom of the oil chamber 1, and the locking holes 15 are locked for a bracket 2, and the bracket 2 is L-shaped and has one end. The positioning ring 20 for bicycles is installed; each piston 3 is inserted into the liquid chamber 10 through the opening 12, and each of the pistons 3 is axially opened with a first wire slot 30, and each of the pistons 3 is exposed. The end of the outer portion of the oil chamber 1 is locked with a bolt 4, and the inner end of each end of the piston 3 has an internal thread 31 for locking the bolt 4. The inner portion of the bolt 4 is axially opened with a second slot 40. Second line slot 30 The 40 series are coaxially connected, and each of the first slots 30 forms a tapered region 301 adjacent to the bolt 4, and each of the tapered regions 301 is tapered from the end of the piston 3 toward the head end; each tapered fastener 5 is placed in the conical zone 301, each of the fasteners 5 is axially opened with a hole 50, and at least one section of the groove 51 communicating with the hole 50 is axially cut, and the buckle 5 is elastically deformed. In the present embodiment, each of the fasteners 5 is axially annularly cut out to form a plurality of slits 51 communicating with the movable holes 50, so that the fasteners 5 respectively form a bundle of nozzles 52 between the adjacent slits 51. Each of the bundle nozzles 52 radially forms an abutting portion 521 toward the hole 50, and each of the abutting portions 521 has a plurality of notches on the surface thereof to form a continuous toothed plane 522. Moreover, the first wire slot 30 defines an active area 302 at the front end of the fastener 5, and the outer diameter of the movable area 302 is smaller than the maximum outer diameter of the fastener 5.

Each of the brake wires 6 is threaded from the wire tube 11 through the second wire groove 40, the hole 50, and the first wire groove 30, and is connected to the brake handle 7 at one end, and each of the fasteners 5 is bundled with the brake wire 6. The outer circumference, specifically, the bundled bundle mouth 52 is bundled on the outer circumference of the brake wire 6, and the abutting portion 521 enclosed by the bundle nozzles 52 limits the diameter of the reduction hole 50 to the same diameter as the brake wire 6. To the extent that the brake wire 6 is held and with its own toothed plane 522, the brake wire 6 is bitten.

Continuing with the fourth to sixth figures, the present invention locks the oil chamber 1 and the bracket 2, and the positioning ring 20 of the bracket 2 is sleeved on the bicycle frame 8, and the first port on both sides of the oil chamber 1 13 and the second port 14 are respectively assembled by the oil pipe 16 and the brake calipers 9 of the front and rear wheels. When the brake operation is performed, the brake handle 7 is first pressed to pull the brake wire 6 to pull out of the wire tube 11, and each of the fasteners 5 is moved into the movable area 302 by the tapered region 301 and elastically compressed to bite the brake wire 6 and drive. The piston 3 slides in the liquid chamber 10 to extrude the oil in the liquid chamber 10, and the oil pipe 16 is injected into the brake caliper 9, and the brake wire 6 is prevented from coming off the line pipe 11, specifically, because When the fastener 5 is moved into the movable area 302 by the tapered portion 301, since the outer diameter of the movable portion 302 is smaller than the maximum outer diameter of the fastener 5, the surrounding beam opening 52 is restricted to the center diameter of the movable hole 50 due to the space being gradually limited. To gather the bundle, the brake wire 6 is bitten by the abutting portion 521. Since the fastener 5 is confined in the tapered region 301, the brake wire 6 is bitten by the fastener 5, preventing it from being pulled by the brake handle 7 and not being taken off. The piston 3 is slid in the liquid chamber 10 of the oil chamber 1 in the direction of the line tube 11 under the integral pulling of the brake handle 7, the brake wire 6, and the fastener 5, so as to transfer the oil in the liquid chamber 10. The first and second ports 13 and 14 on both sides of the oil chamber 1 are respectively output.

In addition to the above functions, the present invention can also change the depth of the bolt 4 and the piston 3 to adjust the stroke of the brake. For example, as shown in the fifth and seventh figures, the bolt 4 is directed toward the internal thread 31 at the proximal end of the piston 3. The retraction can lengthen the displacement of the fastener 5 in the first trunking groove 30, so that the braking stroke becomes longer.

The above description is only intended to explain the preferred embodiments of the present invention, and is not intended to limit the invention in any way. The changer should still be included in the scope of the intention of the present invention.

In summary, the "steel-type hydraulic piston" of the present invention is indeed in full compliance with the industrial development needs, and the disclosed structural invention has an unprecedented innovative structure, so it has " "Newty" should be undoubtedly considered, and the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents in the Patent Law of China, and is a patent application according to law. And please ask the bureau to review it early and give it affirmation.

1. . . Oil room

10. . . Liquid chamber

11. . . Line tube

12. . . Opening

13. . . First port

14. . . Second port

15. . . keyhole

16. . . Tubing

2. . . support

20. . . Locating ring

3. . . piston

30. . . First slot

301. . . Conical zone

302. . . Activity area

31. . . internal thread

4. . . bolt

40. . . Second slot

5. . . Fastener

50. . . Living hole

51. . . Ditch

52. . . Beam mouth

521. . . Abutment

522. . . Toothed plane

6. . . Brake line

7. . . Brake handle

8. . . Frame

9. . . Brake caliper

The first figure is an exploded perspective view of the steel cable hydraulic piston of the present invention.

The second figure is a three-dimensional structure diagram of the buckle of the present invention.

The third figure is a perspective view of the appearance of the combination of the present invention.

The fourth figure is a schematic view of the structure of the invention and the bicycle assembly.

The fifth drawing is a schematic cross-sectional view of the structure of the present invention.

The sixth figure is a schematic cross-sectional view of the structure of the present invention when the brake operation is performed.

The seventh figure is a schematic cross-sectional view of the structure for adjusting the braking stroke of the present invention.

1. . . Oil room

10. . . Liquid chamber

11. . . Line tube

12. . . Opening

13. . . First port

14. . . Second port

15. . . keyhole

2. . . support

20. . . Locating ring

3. . . piston

30. . . First slot

301. . . Conical zone

302. . . Activity area

31. . . internal thread

4. . . bolt

40. . . Second slot

5. . . Fastener

Claims (6)

The utility model relates to a steel cable type hydraulic piston, which comprises an oil chamber, wherein the inner portion of the oil chamber is axially opened with two liquid chambers, and the front end of the oil chamber corresponding to each of the liquid chambers extends axially to an open line tube, and the rear end also corresponds to Each of the liquid chambers has an opening, and each of the line tube, the liquid chamber and the opening is integrally connected, and the first and second oil ports are respectively connected to the liquid chambers on both sides of the oil chamber; The piston system is inserted into the liquid chamber by the opening, and each of the pistons is axially opened with a first wire slot, and each of the pistons is exposed at the end of the oil chamber to lock a bolt, and the inner portion of the bolt is axially opened and has a second a wire slot, the first and second wire grooves are coaxially connected, and each of the first wire grooves forms a tapered region adjacent to the bolt, and each of the tapered regions is tapered from the end of the piston toward the head end; The tapered fasteners are placed in the conical zone, each of the fasteners has an active hole in the axial direction, and at least one of the dissection grooves communicating with the active hole is axially cut out, and the margin of the elastic fastener is left. The first wire groove forms an active area at the front end of the fastener, and the outer diameter of the active area is smaller than the maximum outer diameter of the fastener; each brake line is bolted The second slot, the live hole, and the first slot pass through the line tube, and each of the fasteners is bundled around the outer circumference of the brake line. When the brake line is pulled out of the line tube, each of the fasteners is moved into the active area by the tapered area. It is elastically compressed to bite the brake wire and drive the piston to slide in the liquid chamber to squeeze out the oil in the liquid chamber and prevent the brake wire from coming off the line pipe. The cable-type hydraulic piston according to claim 1, wherein each of the fasteners is axially annularly cut into a plurality of slits communicating with the orifices, so that the fasteners form a bundle between the adjacent pockets. The mouth is bundled with the bundled mouth on the outer circumference of the brake line. When the brake wire is pulled out of the wire tube, the surrounding beam mouth is radially gathered to the center of the hole due to space limitation. The steel cable type hydraulic piston according to claim 2, wherein each of the beam nozzles radially forms an abutting portion toward the living hole, and the enclosed abutting portion limits the aperture of the shrinking hole to just the brake The degree of equal diameter of the line, thereby holding the brake line. The steel cable type hydraulic piston according to claim 3, wherein each of the abutting surfaces has a plurality of notches to form a continuous toothed plane for gripping the brake wire. The cable-type hydraulic piston according to any one of claims 1 to 4, wherein the end of the piston has an internal thread for bolt locking to change the depth of the bolt and the piston to adjust the brake Itinerary. The cable-type hydraulic piston according to any one of the preceding claims, wherein at least one of the lock holes is opened in the bottom of the oil chamber, and the lock hole is locked by a bracket and fixed by the bracket. On the bicycle; the bracket is L-shaped and has a positioning ring for bicycles at one end.