CN104791363A - Wear-proof brake cable - Google Patents

Abstract

The invention relates to a wear-proof brake cable. The brake cable comprises a brake cable body (1) and a steel wire group (2), wherein the brake cable body comprises a lining pipe (1.1) and a clad layer (1.2); the lining pipe (1.1) is arranged in the clad layer (1.2); a length direction of the clad layer (1.2) is in a spring curve shape; the metal wire group (2) is arranged in the lining pipe (1.1); one end of an external casing (3) is arranged outside the clad layer (1.2); the other end of the external casing (3) extends outwards axially and is arranged on the steel wire group (2); a ring belt (4) is arranged at the end part of the metal wire group (2); and the surface of the brake cable body (1) is coated with a wear-proof coating. According to the wear-proof brake cable, the brake cable can retract automatically to facilitate vehicle folding and is wear-proof; in addition, the metal wire group has high strength and is not easy to damage; the ring belt at the end part of the metal wire group are used for fixing the metal wire group and a handle, so that the brake cable cannot be separated from the handle; and driving safety is ensured.

Description

A kind of wear-resisting braking string

Technical field

The present invention relates to a kind of wear-resisting braking string, for folding bicycle brake system.Belong to bicycle accessories technical field.

Background technique

Folded bicycle has collapsible, easy manipulation, portable advantage, does not also need by external tools in folding using process, manually folding or launch from being about to car, after folding, can be more conveniently accommodated in automobile trunk or boarding case.

Existing folding bicycle is after vehicle folding, and braking string cannot be folded, and its length does not change, and longer one section bends outside, is easily hooked to by external object, affects the folder function of vehicle in vehicle transport process; And the steel wire in existing braking string internal lining pipe, owing to being single metal wire, can cause its insufficient strength like this, have impact on the using effect of brake system; Its end of the surrounding layer of existing braking string is not owing to having outer sleeve, and therefore braking string end-fitting part is is easily worn and torn, and have impact on the using effect of brake system; The end of the steel wire in existing braking string internal lining pipe be a hook for fixed handle, after service time is longer, hook can be out of shape, and braking string and handle so can be caused to throw off, thus brake failure, is prone to accidents.

Existing braking string surface hardness is poor, can wear and tear after long-time use, thus can damaging internal braking string body.

Summary of the invention

The object of the invention is to overcome above-mentioned deficiency, provide a kind of wear-resisting braking string, this braking string braking string body can automatic retracted, is convenient to vehicle folding and wear-resisting; Groups of metal filaments comprises many one metal wires, and wire is axially helical pattern, and groups of metal filaments intensity is high, not fragile; And outer sleeve energy available protecting braking string end-fitting part wears, and ensure that traffic safety.

The object of the present invention is achieved like this:

A kind of wear-resisting braking string, be characterized in: described braking string comprises braking string body and steel wire, described braking string body comprises internal lining pipe and surrounding layer, internal lining pipe is arranged in surrounding layer, surrounding layer is spring curve shape at length direction, described groups of metal filaments is arranged in internal lining pipe, groups of metal filaments comprises many one metal wires, length direction wiry is axial consistent with internal lining pipe, and many one metal wires are upper along its length to be bent twist, one end of described outer sleeve is arranged on outside surrounding layer, the other end stretches out vertically and is arranged on steel wire, the end of described groups of metal filaments is provided with endless belt, the surface of described braking string body is coated with wear resistant coating, described wear resistant coating comprises fluoropolymer, polymer adhesive and inorganic filler film hardeners, the weight ratio of fluoropolymer and polymer adhesive is 0.5 ~ 2.0:1, the weight ratio of packing thin film hardening agent and fluoropolymer is 1.4:1, wherein thin filled film hardening agent comprises the ceramic particle that Mean particle diameter is at least 14 microns, ceramic particle has the Knoop hardness of at least 1200, be not more than the aspect ratio of 2.5, the cross section of the wear resistant coating of every 1 centimetre have three ceramic particles at least.

A kind of wear-resisting braking string of the present invention, its groups of metal filaments has 15 ~ 25 one metal wires.

Compared with prior art, the invention has the beneficial effects as follows:

A kind of wear-resisting braking string of the present invention, this braking string braking string body can automatic retracted, is convenient to vehicle folding and wear-resisting; Groups of metal filaments comprises many one metal wires, and wire is axially helical pattern, and groups of metal filaments intensity is high, not fragile; And outer sleeve energy available protecting braking string end-fitting part wears; Groups of metal filaments end is provided with an endless belt, fixes with handle, and therefore braking string can not be thrown off with handle, ensure that traffic safety.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of wear-resisting braking string of the present invention.

Fig. 2 is the structural representation of groups of metal filaments of the present invention.

Fig. 3 is the schematic diagram of the end of groups of metal filaments of the present invention.

In figure:

Braking string body 1,

Internal lining pipe 1.1,

Surrounding layer 1.2,

Groups of metal filaments 2,

Outer sleeve 3,

Endless belt 4.

Embodiment

See Fig. 1-2, the present invention relates to a kind of wear-resisting braking string, it comprises braking string body 1, groups of metal filaments 2 and outer sleeve 3, described braking string body comprises internal lining pipe 1.1 and surrounding layer 1.2, and internal lining pipe 1.1 is arranged in surrounding layer 1.2, and surrounding layer 1.2 is spring curve shape at length direction, under folded bicycle normal operating condition, braking string body keeps stretching using state normally, and under folded bicycle folds and packs up situation, braking string body automatic retracted is spring-like.

One end of described outer sleeve 3 is arranged on surrounding layer 1.2, and the other end axially stretches out along surrounding layer 1.2 and is arranged in groups of metal filaments 2.

Described groups of metal filaments 2 is arranged in internal lining pipe 1.1, and groups of metal filaments 2 comprises many one metal wires, length direction wiry is axial consistent with internal lining pipe 1.1, and many one metal wires along its length upper bending (are similar to the wire rope that twisting is shaping) twist, described groups of metal filaments 2 has 15 ~ 25 one metal wires, and optimum is 21.

See Fig. 3, the end of described groups of metal filaments 2 is provided with endless belt 4.

The surface of described braking string body 1 is coated with wear resistant coating, described wear resistant coating comprises fluoropolymer, polymer adhesive and inorganic filler film hardeners, the weight ratio of fluoropolymer and polymer adhesive is 0.5 ~ 2.0:1, the weight ratio of packing thin film hardening agent and fluoropolymer is 1.4:1, wherein thin filled film hardening agent comprises the ceramic particle that Mean particle diameter is at least 14 microns, ceramic particle has the Knoop hardness of at least 1200, be not more than the aspect ratio of 2.5, the cross section of the wear resistant coating of every 1 centimetre has three ceramic particles at least.

Claims (2)

1. a wear-resisting braking string, it is characterized in that: described braking string comprises braking string body (1), groups of metal filaments (2) and outer sleeve (3), described braking string body comprises internal lining pipe (1.1) and surrounding layer (1.2), internal lining pipe (1.1) is arranged in surrounding layer (1.2), surrounding layer (1.2) is spring curve shape at length direction, described groups of metal filaments (2) is arranged in internal lining pipe (1.1), groups of metal filaments (2) comprises many one metal wires, length direction wiry is axial consistent with internal lining pipe (1.1), and many one metal wires are upper along its length to be bent twist, one end of described outer sleeve (3) is arranged on surrounding layer (1.2), the other end axially stretches out along surrounding layer (1.2) and is arranged in groups of metal filaments (2), the end of described groups of metal filaments (2) is provided with endless belt (4), the surface of described braking string body (1) is coated with wear resistant coating, described wear resistant coating comprises fluoropolymer, polymer adhesive and inorganic filler film hardeners, the weight ratio of fluoropolymer and polymer adhesive is 0.5 ~ 2.0:1, the weight ratio of packing thin film hardening agent and fluoropolymer is 1.4:1, wherein thin filled film hardening agent comprises the ceramic particle that Mean particle diameter is at least 14 microns, ceramic particle has the Knoop hardness of at least 1200, be not more than the aspect ratio of 2.5, the cross section of the wear resistant coating of every 1 centimetre have three ceramic particles at least.

2. the wear-resisting braking string of one according to claim 1, is characterized in that: described groups of metal filaments (2) has 15 ~ 25 one metal wires.