CN104389889A - High-strength weather-proof brake cable - Google Patents

Abstract

The invention relates to a high-strength weather-proof brake cable. The high-strength weather-proof brake cable comprises an outer cladding layer (1), two lining pipes (2) arranged in parallel side by side and two metal wire groups (3), wherein each brake cable body (4) comprises an inner carbon fiber core cable group (4.1) and an outer resin layer (4.2); one end of an outer sheath pipe (5) is arranged on the outer cladding layer (1); the other end of the outer sheath pipe (5) axially extends outwards and is arranged on each brake cable body (4); an annular belt (6) is arranged at the end of each brake cable body (4). According to the high-strength weather-proof brake cable, two brake cable bodies are uniformly stressed during braking; meanwhile, the brake cable bodies are simple to mold, light in mass, chemical corrosion-resistant, high in weather resistance and low in production cost; the lining pipe and the outer cladding layer of the brake cable has small possibility of sliding relative to each other, so that the use effect of a brake system is ensured; the outer sheath pipe can be used for effectively protecting the abrasion of a connector part of the end of the brake cable; the riding safety is ensured.

Description

The weather-proof braking string that intensity is high

Technical field

The present invention relates to a kind of braking string, for bicycle brake system.Belong to bicycle accessories field.

Background technique

Bicycle brake system comprises brake lever, braking string, the accessories such as brake binder, before the brake system of prior art is typically provided with one, one latter two braking string and corresponding with it two brake levers and two brake binders, braking string easily ruptures in use for some time, cause brake failure, potential safety hazard is higher, for solving the problems of the technologies described above the two-wire brake system needing use two front brake fares and two rear brake fares, two front brake fares of this brake system need length consistent, two braking string body uniform force during to ensure to brake, but two separate braking string bodies cannot ensure that length is consistent, also there is certain difficulty in assembling.

Existing braking string body is made up of the hollow tubular of outside rubber and the steel wire of inside, and its insufficient strength is high, and resistance to chemical corrosion is poor, and weatherability is bad, and cost of production is higher.

Not, easily there is relative sliding in internal lining pipe and surrounding layer for frictional force between existing braking string internal lining pipe and surrounding layer and support force, brake can be caused like this to stop tight, 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 existing braking string body 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.

Summary of the invention

The object of the invention is to overcome above-mentioned deficiency, provide the weather-proof braking string that a kind of intensity is high, the internal lining pipe of this braking string ensures that two braking string are isometric, two braking string body uniform force when ensureing to brake; Simultaneously braking string this body formed simple, quality is light, resistance to chemical attack, good weatherability, cost of production are low; Effectively increasing the frictional force between internal lining pipe and surrounding layer and support force, not easily there is relative sliding in internal lining pipe and surrounding layer, ensure that the using effect of brake system; 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:

The weather-proof braking string that a kind of intensity is high, be characterized in: described braking string comprises surrounding layer, the internal lining pipe of two side by side parallel settings and two wires, the length of two internal lining pipes is equal, braking string body is provided with in described internal lining pipe, two wires are wrapped in the outer wall of internal lining pipe respectively, surrounding layer is coated on outside two wires, described braking string body comprises the carbon fiber heart yearn group of internal layer and outer field resin layer, one end of described outer sleeve is arranged on surrounding layer, the other end axially stretches out along surrounding layer and is arranged on braking string body, the end of described braking string body is provided with endless belt, described resin layer is formed by the material mixture ratio of following mass ratio: E-42 bisphenol A epoxide resin 100-110 part, magnesium silicate 25-27 part, plumbago 10-12 part, butanols 20-22, ortho-xylene dibutyl phthalate 12-14 part, amine hardener 15-17 part.

The weather-proof braking string that a kind of intensity of the present invention is high, its carbon fiber heart yearn group is made up of multi-beam carbon-fiber heart yearn, comprises 1000 ~ 200000 carbon fibers in every a branch of carbon fiber core, and the diameter of every root carbon fiber is 5 ~ 15 microns.

A kind of 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:

The weather-proof braking string that a kind of intensity of the present invention is high, its internal lining pipe ensures that two braking string bodies are isometric, two braking string body uniform force when ensureing to brake.

The weather-proof braking string that a kind of intensity of the present invention is high, its braking string body is made carbon fiber heart yearn group and is coated on the resin layer outside carbon fiber heart yearn group, obtained braking string this body formed simple, quality is light, resistance to chemical attack, good weatherability, cost of production are low.

Because the groups of metal filaments between surrounding layer and internal lining pipe is closely arranged in radial direction, be axially helical pattern, therefore effectively increase the frictional force between surrounding layer and internal lining pipe and support force, between surrounding layer and internal lining pipe, not easily relative sliding occurs, ensure brake system using effect.

The weather-proof braking string that a kind of intensity of the present invention is high, outer sleeve energy available protecting braking string end-fitting part wears.

Braking string body end is provided with an endless belt, fixing for braking string body and handle, and therefore braking string can not be thrown off with handle, ensure that traffic safety.

Accompanying drawing explanation

Fig. 1 is the sectional view of a kind of braking string of the present invention.

Fig. 2 is the structural representation of braking string body of the present invention.

Fig. 3 is the A-A sectional drawing in Fig. 2.

Fig. 4 is the schematic diagram of the present invention's axially-aligned wiry.

Fig. 5 is the structural representation of joint of the present invention.

Fig. 6 is the schematic diagram of the end of braking string body of the present invention.

In figure:

Surrounding layer 1,

Internal lining pipe 2,

Groups of metal filaments 3,

Braking string body 4,

Carbon fiber heart yearn group 4.1,

Resin layer 4.2,

Outer sleeve 5,

Endless belt 6.

Embodiment

See Fig. 1-4, the present invention relates to the weather-proof braking string that a kind of intensity is high, comprise surrounding layer 1, the internal lining pipe 2 of two side by side parallel settings and groups of metal filaments 3, the length of two internal lining pipes 2 is equal, braking string body 4 is provided with in described internal lining pipe 2, described groups of metal filaments 3 comprises many one metal wires, wire is closely arranged at internal lining pipe 2 outer wall, length direction wiry is axial consistent with internal lining pipe 2, 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 3 has 15 ~ 25 one metal wires, optimum is 21, described surrounding layer 1 is coated on outside groups of metal filaments 3.

Described braking string body 4 comprises carbon fiber heart yearn group 4.1 and the outer field resin layer 4.2 of internal layer, described carbon fiber heart yearn group 4.1 is made up of multi-beam carbon-fiber heart yearn, 1000 ~ 200000 carbon fibers are comprised in every a branch of carbon fiber core, the diameter of every root carbon fiber is 5 ~ 15 microns, described resin layer is formed by the material mixture ratio of following mass ratio: E-42 bisphenol A epoxide resin 100-110 part, magnesium silicate 25-27 part, plumbago 10-12 part, butanols 20-22, ortho-xylene dibutyl phthalate 12-14 part, amine hardener 15-17 part.

See Fig. 5, one end of described outer sleeve 5 is arranged on surrounding layer 1, and the other end axially stretches out along surrounding layer 1 and is arranged on braking string body 4.

See Fig. 6, the end of described braking string body 4 is provided with endless belt 6.

Braking string body 4 of the present invention once-through, in the process of preparation braking string body, the head of extruder, through a branch of continuous print carbon fiber, makes braking string body 4 from the resin layer 4.2 carbon fiber heart yearn group 4.1 that is coated on tightly of extruder molten state out.

The diameter of carbon fiber heart yearn group 4.1 can control for the hauling speed of drawing carbon fiber heart yearn tractor by regulating, and then according to required length, continuous print braking string body is sheared.

The density of carbon fiber heart yearn group 4.1 of the present invention is low, and it is 1.76 ~ 1.8g/cm ³, and traditional stainless density as braking string body is 7.5 ~ 8g/cm ³, carbon fiber heart yearn has high specific strength simultaneously, and make the braking string of same thickness, the intensity of carbon fiber heart yearn is far above stainless intensity, and weight is 1/4th of stainless steel braking string.

In addition, the resistance to chemical attack of carbon fiber heart yearn, good weatherability, low cost of manufacture.

Installation process: inserted in two internal lining pipes be arranged side by side 2 respectively by two braking string bodies 4 during assembling, be then connected with bicycle brake handle one end of two braking string bodies 4, the other end is connected with braking binder of bicycle.The length of two internal lining pipes 2 unanimously can ensure that braking string body 4 length is consistent, two braking string body uniform force when braking, and this structure is more convenient at fit on compared with two separate internal lining pipes, and profile is cleaner and tidier, attractive in appearance.

Claims (3)

1. the weather-proof braking string that an intensity is high, it is characterized in that: described braking string comprises surrounding layer (1), the internal lining pipe (2) of two side by side parallel settings and two groups of metal filaments (3), the length of two internal lining pipes (2) is equal, braking string body (4) is provided with in described internal lining pipe (2), described groups of metal filaments (3) comprises many one metal wires, wire is closely arranged at internal lining pipe (2) outer wall, length direction wiry is axial consistent with internal lining pipe (2), and many one metal wires are upper along its length to be bent twist, described surrounding layer (1) is coated on groups of metal filaments (3) outward, described braking string body (4) comprises carbon fiber heart yearn group (4.1) and the outer field resin layer (4.2) of internal layer, one end of described outer sleeve (5) is arranged on surrounding layer (1), the other end axially stretches out along surrounding layer (1) and is arranged on braking string body (4), the end of described braking string body (4) is provided with endless belt (6), described resin layer is formed by the material mixture ratio of following mass ratio: E-42 bisphenol A epoxide resin 100-110 part, magnesium silicate 25-27 part, plumbago 10-12 part, butanols 20-22, ortho-xylene dibutyl phthalate 12-14 part, amine hardener 15-17 part.

2. the weather-proof braking string that a kind of intensity according to claim 1 is high, it is characterized in that: described carbon fiber heart yearn group (4.1) is made up of multi-beam carbon-fiber heart yearn, comprise 1000 ~ 200000 carbon fibers in every a branch of carbon fiber core, the diameter of every root carbon fiber is 5 ~ 15 microns.

3. the weather-proof braking string that a kind of intensity according to claim 1 is high, is characterized in that: described groups of metal filaments (3) has 15 ~ 25 one metal wires.