CN2167934Y

CN2167934Y - Connecting structure for tube and joint of bicycle

Info

Publication number: CN2167934Y
Application number: CN93221400U
Authority: CN
Inventors: 纪国昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-11
Filing date: 1993-08-11
Publication date: 1994-06-08
Anticipated expiration: 2003-08-11

Abstract

The utility model discloses a connecting structure for the tubes and the joints of a bicycle. A bicycle tube is provided with a plurality of recesses which are positioned on the recesses of convex tubes of joints. The recesses on the bicycle tube are provided with arc-shaped blocks. Screw bolts penetrate the arc-shaped blocks and are screwed on the recesses of the convex tubes to limit the radical and axial rotation of the bicycle tube and the joints. The joints of bicycle tube and the convex tubes are wrapped with thermosetting resin fiber, and then solidified. Therefore, an optimum effect is obtained.

Description

Connecting structure for tube and joint of bicycle

The utility model relates to the connection structure of bicycle car pipe and joint.

Existing bicycle car pipe is welded to connect with the system's employing that is connected of joint, and the high temperature during welding easily makes weld produce embrittlement and lacks aesthetic feeling in appearance.

The utility model is intended to propose a kind of bicycle car pipe that need not weld and the connection structure of joint.

The bicycle car pipe that the utility model proposes and the connection structure of joint are the car pipe box to be connect be positioned on the protruding pipe, some depressions are arranged on protruding tube outer surface, car pipe and the binding end of protruding pipe have the car pipe depression of the identical concave shape of some corresponding protruding pipes, one garden arc piece is embedded in car pipe depression, and bolt element passes garden arc piece and screws togather car pipe depression and protruding pipe depression and bicycle car pipe and joint can not be produced axially and radially rotate.

Can contain thermoset resin fibres in the fit end winding of car pipe and protruding pipe and drape over one's shoulders the shoe layer, can obtain better preventing after the curing and radially reach the axial rotation effect.

Because car pipe depression of the present utility model is entrenched on the protruding pipe depression, thus after arc piece 6 engagings in garden are embedded in the car pipe depression again bolt up can limit car pipe and joint effectively radially reach axial rotation.Simultaneously, more can strengthen car pipe and joint bonded assembly impregnability and beautify outward appearance with containing thermoset resin fibres package car pipe and protruding Guan Houzai curing molding.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the car pipe of the utility model embodiment and the scheme drawing of joint.

Fig. 2 is the utility model embodiment car pipe and the cutaway view that combines of joint.

Fig. 3 is that the car pipe of the utility model embodiment cycle frame combines cutaway view with joint.

Fig. 4 is car pipe and the joint scheme drawing of another embodiment of the utility model.

Among the figure, the 1st, the car pipe, the 2nd, joint, the 3rd, protruding pipe, the 4th, protruding pipe depression, the 5th, car pipe depression, the 6th, garden arc piece, the 7th, bolt element, the 8th, contain the thermoset resin fibres layer and drape over one's shoulders shoe layer, the 9th, depression hole, the 10th, garden arc piece hole, the 11st, groove.

With reference to Fig. 1, the protruding pipe depression 4 of several rules or irregular alignment is set on the protruding pipe 3 of joint 2, protruding pipe depression 4 is provided with negative thread; After the binding end socket of car pipe 1 was positioned protruding pipe 3, the position of corresponding protruding pipe depression 4 was pressed into the car pipe depression 5 of identical concave shape with tool of compression with it, as shown in Figure 2.A depression hole 9 is offered in screw thread concentric position within the corresponding protruding pipe depression 4, put a garden arc piece 6 again, in car pipe depression, the bottom of this garden arc piece 6 is same as car pipe pocket shapes, the top becomes identical garden arc shape with car pipe 1 external diameter, the middle part is provided with the garden arc piece hole 10 with car pipe depression 5 concentrics, and internal diameter passes to screw togather behind the garden arc piece hole 10 greater than bottom internal diameter, bolt element 7 and is tightened in the protruding pipe depression 4 on this hole 10, makes car pipe 1 and joint 2 can not radially reach axial rotation.

Can between car pipe 1 and protruding pipe 3, reach garden arc piece 6 earlier during combination, lay a preimpregnation thermoset resin fibres on the bolt element 7 and drape over one's shoulders shoe layer 8, (fiber can be selected carbon fiber, glass fibre etc. for use), drape over one's shoulders and carry out the whole joint 2 of layer 8 parcel, garden arc piece 6, it is integrated on the profile that bolt element 7 makes it, and inserts the heating and pressurizing curing molding can obtain the utility model proposes in the mould the bicycle car pipe and the connection structure of joint again.

During making, can on car pipe 1 and protruding pipe 3, offer several grooves 11, make car pipe and protruding pipe can suitably expand and in contract, be convenient to car pipe 1 closely contracted and restraint on protruding pipe 3, thereby form an extra Clamping force.

Claims

1, the connection structure of bicycle car pipe and joint contains car pipe (1) and joint (2), it is characterized in that:

1) on the protruding pipe (3) of joint some protruding pipe depressions (4) is arranged;

2) car pipe (1) has the car pipe depression (5) of the protruding pipe depression of some correspondences, and car pipe depression (5) is positioned on the protruding pipe depression (4);

3) car pipe depression (5) is provided with garden arc piece (6), and bolt element (7) passes garden arc piece (6) and screws and be fastened on the protruding pipe (3).

2, the connection structure of bicycle according to claim 1 and car pipe is characterized in that being enclosed with on car pipe (1) and the protruding pipe (3) and contains thermoset resin fibres and drape over one's shoulders and carry out layer (8).

3, the connection structure of bicycle car pipe according to claim 1 and 2 and joint is characterized in that on car pipe (1) and the protruding pipe (3) several grooves (11) being arranged.