CN2662000Y

CN2662000Y - Hydraulic disk brake

Info

Publication number: CN2662000Y
Application number: CN 200320123207
Authority: CN
Inventors: 陈晓东
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-20
Filing date: 2003-12-20
Publication date: 2004-12-08
Anticipated expiration: 2013-12-20

Abstract

The utility model relates to a hydraulic disc brake, which is applicable to the braking devices of pedal bicycles, electric bicycles and low emission aided bicycles. The hydraulic disc brake comprises a starting master cylinder and at least one cylinder semi-body (1), and is characterized in that: an oil pool cavity (3) and a piston cavity (4) which are mutually isolated are arranged on the other side of the cylinder semi-body (1) corresponding to the cylinder oil chamber (2). The piston cavity (4) is provided with a piston component with a return mechanism and a communicating oil channel to integrate the starting master cylinder and the cylinder semi-body (1) into an integrated whole. Compared with prior art, the utility model has the advantages of compact structure, safety, low production cost, and applicability to electric bicycles and small emission aided bicycles.

Description

A kind of hydraulic brake

Technical field: the utility model relates to a kind of hydraulic brake, is applicable to as bicycle, electric bicycle and float amount motor-helping car braking device.

Background technique: existing Vehicular brake device generally has following several mode: modes such as skin brake that hub is stopped, rubber is stopped, mechanical disc brake, motorcycle disc brake are braked.In these several modes of braking, preceding two kinds of braking qualities are poor, can not satisfy the traffic safety requirement far away; The machinery disc brake can't compensate behind friction disc wear automatically, causes very big potential safety hazard; Obviously cost is too high concerning bicycle, float amount motor-helping car and adopt the motorcycle hydraulic braking device, and inapplicable (need not so big braking force), thereby causes the wasting of resources.

Summary of the invention: the purpose of this utility model be the deficiency that exists at above-mentioned prior art and provide use such as a kind of suitable float amount motor-helping car, electric bike efficiently, safety and cost economy, suit the hydraulic brake of market demand.

The utility model adopts following technological scheme: hydraulic brake comprises startup master cylinder and at least one wheel cylinder halfbody, it is characterized in that: the oil sump chamber and the piston cavity that are provided with mutual isolation on the pump housing of a described wheel cylinder halfbody with respect to the opposite side of minute oil pumping chamber, be provided with the piston assembly that has return mechanism in the piston cavity, be exposed at outside the piston cavity to piston rod end motive sealing in the piston assembly, interior nearly return end of piston cavity and adjacent piston head place are provided with oil sump chamber intercommunicating pore and are communicated with the oil sump chamber, be provided with branch oil pumping chamber intercommunicating pore away from return end place and be communicated with described oil sump chamber with dividing oil pumping chamber, piston cavity, piston assembly and intercommunicating pore constitute the startup master cylinder with wheel cylinder halfbody one.

Because the technical solution of the utility model is that startup master cylinder and brake cylinder halfbody part directly are designed to an integral body, compared with prior art, lacked a brake pipe, structure very compactness, safety and cost of production is lower, the brake cable be convenient on the brake handle with at present electric bicycle, float amount motor-helping car of the setting of the drag-line bindiny mechanism of piston rod outer end head matches in addition, need not to do big repacking, be convenient to very much be installed on electric bicycle, the float amount motor-helping car and use.

The utility model is described in further detail below in conjunction with accompanying drawing, and provide embodiment.

Description of drawings:

Fig. 1 is the utility model example structure sectional view;

Specific embodiment: as shown in Figure 1, present embodiment is a hydraulic disk opposed type break, break is provided with two opposed wheel cylinder halfbodies 1, same as the prior art, be provided with wheelcylinder piston on the wheel cylinder halfbody 1 equally, part such as leather cup and bleed valve, opposite side with respect to minute oil pumping chamber 2 on the pump housing of a wheel cylinder halfbody 1 therein is provided with a boss, offer a cavity on the boss, oil sump chamber 3 is made of cavity of being told and sealed cover 9, piston cavity 4 places oil sump chamber 3 and divides between the oil pumping chamber 2, oil sump chamber 3 and piston cavity 4 are isolated mutually, piston cavity 4 is a cylindrical cavity, one end is provided with the guide hole with piston rod 5 diameters piston rod 5 movingly, sheathed last 10 backs pass from guide hole partly and expose on the piston rod 5, the other end is spacing by annular spring, return spring constitutes described return mechanism, expose piston rod 5 from above be provided with " " shape overarm, overarm is provided with the drag-line guide hole that axis overlaps with piston rod 5, drag-line direction of pull during with the assurance braking, piston cavity 4 interior nearly return ends and adjacent piston head place are provided with oil sump chamber intercommunicating pore 6 and are communicated with oil sump chamber 3, being provided with branch oil pumping chamber intercommunicating pore 7 away from return end place is communicated with dividing oil pumping chamber 2, described oil sump chamber 3, piston cavity 4, piston assembly and intercommunicating pore constitute the startup master cylinder with wheel cylinder halfbody 1 one, 2 of the branch oil pumping chambers of the wheel cylinder halfbody 1 of two opposed type settings are provided with the connection oil duct 8 of sealing, constitute opposed type braking operation mechanism.

Claims

1, a kind of hydraulic brake, comprise and start master cylinder and at least one wheel cylinder halfbody (1), it is characterized in that: the oil sump chamber (3) and the piston cavity (4) that are provided with mutual isolation on the pump housing of a described wheel cylinder halfbody (1) with respect to the opposite side of a minute oil pumping chamber (2), piston cavity is provided with the piston assembly that has return mechanism in (4), be exposed at outside the piston cavity (4) to piston rod in the piston assembly (5) end motive sealing, interior nearly return end of piston cavity (4) and adjacent piston head place are provided with oil sump chamber intercommunicating pore (6) and are communicated with oil sump chamber (3), be provided with branch oil pumping chamber intercommunicating pore (7) away from return end place and be communicated with described oil sump chamber (3) with dividing oil pumping chamber (2), piston cavity (4), piston assembly and intercommunicating pore constitute the startup master cylinder with wheel cylinder halfbody (1) one.

2, hydraulic brake according to claim 1 is characterized in that: described piston rod (5) end is from passing away from the return end, and the termination is provided with the bindiny mechanism that connects for brake cable.

3, hydraulic brake according to claim 1 and 2, it is characterized in that: described hydraulic brake is provided with two wheel cylinder halfbodies (1), and the opposed type setting, be provided with the connection oil duct (8) of sealing between two branch oil pumping chambers (2), constitute opposed type braking operation mechanism.