CN211738298U - Connecting structure of brake hard tube - Google Patents

Abstract

The utility model discloses a connection structure of braking hard tube, including female connection, left braking hard tube, right braking hard tube and external thread joint, left braking hard tube, right braking hard tube connect through female connection and external thread joint in the joint position department, female connection includes first through-hole and internal thread, and the one end of left braking hard tube is equipped with female joint, and the internal thread aperture is greater than the diameter of first through-hole, the external diameter of female joint is greater than the diameter of first through-hole and is less than the internal thread aperture, and left braking hard tube passes first through-hole and passes through female joint and female connection sealing connection; one end of the right braking hard pipe is provided with a convex joint, the external thread joint is provided with a second through hole, the outer diameter of the convex joint is larger than the diameter of the second through hole and smaller than the aperture of the internal thread, and the right braking hard pipe penetrates through the second through hole and is connected with the external thread joint in a sealing mode through the convex joint. The utility model provides a connection structure of braking hard tube, simple structure, simple to operate, with low costs.

Description

Connecting structure of brake hard tube

Technical Field

The utility model relates to an automobile parts field especially relates to a connection structure of braking hard tube.

Background

The automobile industry is the pillar industry of economic development, and along with the development of the automobile industry, the issues of energy conservation, emission reduction and light weight also gradually become the focus of attention of people, for example: the whole car mass reduces by 10%, and to reduce whole car weight need begin with every part design, and car braking system belongs to the important system on chassis, and the sedan-chair owner is hydraulic braking at present stage. However, most cars are provided with a two-way pipe and a welding bracket at the brake hard pipe section, and then the two-way pipe and the welding bracket are mounted on the floor of the car body or other parts of the car body through screws.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned not enough of connection structure existence of present braking hard tube, the utility model provides a simple structure, simple to operate's connection structure of braking hard tube has saved original punching press process and welding process, and is with low costs.

In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:

a connecting structure of a brake hard pipe comprises an internal thread joint, a left brake hard pipe, a right brake hard pipe and an external thread joint, wherein the left brake hard pipe and the right brake hard pipe are connected at the joint position through the internal thread joint and the external thread joint; one end of the right braking hard pipe is provided with a convex joint, the external thread joint is provided with a second through hole, the outer diameter of the convex joint is larger than the diameter of the second through hole and smaller than the aperture of the internal thread, and the right braking hard pipe penetrates through the second through hole and is hermetically connected with the external thread joint through the convex joint; the female connector is in a horn mouth shape, a curled edge is arranged on the outer side of the horn mouth and is tightly attached to the horn mouth, the male connector is provided with a pressure bearing surface, and the angle of the pressure bearing surface is larger than that of the horn mouth; after the internal thread joint and the external thread joint are fixed, the pressure bearing surface is tightly attached to the surface of the turned edge; the angle of the bell mouth is 90-120 degrees, and the angle of the pressure bearing surface is 90-120 degrees.

According to one aspect of the utility model, the wall thickness of the brake hard tube is not more than 1mm, the female screw joint is a hexagonal steel female screw nut, and the male screw joint is a hexagonal steel male screw nut; the female joint and the male joint are both formed by adopting a stamping process.

According to one aspect of the utility model, the brake hard tube is a double-layer roll-welded tube, and the number of the double-layer roll-welded tube is one or more; the multiple double-layer roll-welded pipes are installed side by side, and joints of the adjacent double-layer roll-welded pipes are staggered mutually.

The utility model discloses the advantage of implementing lies in: the connecting structure of the brake hard pipe of the utility model has the advantages that the left brake hard pipe and the right brake hard pipe are connected only through the female adapter and the male adapter at the joint of the brake hard pipe, the structural design is simple, and the installation is convenient; in addition, because the one end of left braking hard tube is equipped with the female joint, and left braking hard tube passes first through-hole and passes through female joint and female adapter sealing connection, and the one end of right braking hard tube is equipped with the male joint, and right braking hard tube passes the second through-hole and passes through male joint and male adapter sealing connection, and original punching press process and welding process have been saved to whole connection structure like this, reduce cost, alleviate whole car weight, accord with lightweight design theory.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without any inventive work.

Fig. 1 is a schematic view of a connection structure of a brake hard pipe according to the present invention;

fig. 2 is a schematic structural view of the connection between the left brake hard tube and the female adapter of the present invention;

fig. 3 is the structural schematic diagram of the right brake hard tube and the external thread joint of the present invention.

Detailed Description

The following further description is made with reference to the accompanying drawings and examples,

as shown in fig. 1 to 3, a connection structure of a brake hard tube comprises an internal thread joint 1, a left brake hard tube 3, a right brake hard tube 4 and an external thread joint 2, wherein the left brake hard tube 3 and the right brake hard tube 4 are connected at the joint position through the internal thread joint 1 and the external thread joint 2, the internal thread joint 1 comprises a first through hole 5 and an internal thread 6, a concave joint 9 is arranged at one end of the left brake hard tube 3, the aperture of the internal thread 6 is larger than that of the first through hole 5, the outer diameter of the concave joint 9 is larger than that of the first through hole 5 and smaller than that of the internal thread 6, and the left brake hard tube 3 penetrates through the first through hole 5 and is hermetically connected with the internal thread joint 1 through the concave joint 9; one end of the right braking hard pipe 4 is provided with a convex joint 10, the external thread joint 2 is provided with a second through hole 7, the outer diameter of the convex joint 10 is larger than the diameter of the second through hole 7 and smaller than the aperture of the internal thread 6, and the right braking hard pipe 4 penetrates through the second through hole 7 and is connected with the external thread joint 2 in a sealing mode through the convex joint 10.

In practical application, the wall thickness of the brake hard pipe is not more than 1mm, the left brake hard pipe 3 and the right brake hard pipe 4 are generally double-layer roll-welded pipes, the outer diameter of each double-layer roll-welded pipe is phi 4.76mm, the wall thickness is preferably 0.7mm, the female adapter 1 is a hexagonal steel female screw nut, a hexagonal steel female screw nut with 12mm opposite sides is generally adopted, the position close to the adapter is an internal thread 6, the male adapter 2 is a hexagonal steel male screw nut, a hexagonal steel male screw nut with 10mm opposite sides is generally adopted, and the position of the external thread 8 corresponds to the internal thread 6; in addition, the female joint 9 and the male joint 10 are formed by adopting a stamping process, the left brake hard pipe 3 and the female joint 9 are conveniently processed into a whole, the right brake hard pipe 4 and the male joint 10 are processed into a whole, when the double-layer roll welding pipe is installed, the front and the rear double-layer roll welding pipes are directly and tightly connected together by the internal thread 6 and the external thread 8 at the joint position, and then the pipe clamp is used for fixing the double-layer roll welding pipe at a proper position of a vehicle body, so that the whole structure is simple, the stamping process and the welding process are omitted, the installation is convenient, the cost is reduced, the weight of the whole vehicle is also reduced, and the automobile light-. In addition, the number of the double-layer roll-welded pipes can be one or more, as shown in fig. 1, when a plurality of double-layer roll-welded pipes are arranged, the double-layer roll-welded pipes are installed side by side, the joints of the adjacent double-layer roll-welded pipes are staggered, and the staggered distance between the adjacent joints mainly considers the installation groove center distance of the hard pipe clamp for fixing the double-layer roll-welded pipes and the gap of the nut joint.

In practical application, in order to improve the sealing performance of the brake hard pipe joint, the female joint 9 is in the shape of a bell mouth 13, the male joint 10 is provided with a pressure bearing surface 12, the angle of the bell mouth 13 can be 90-120 degrees, the angle of the pressure bearing surface 12 can be 90-120 degrees, in addition, a curled edge 11 is arranged outside the bell mouth 13, the curled edge 11 is tightly attached to the bell mouth 13, since the angle of the pressure bearing face 12 is greater than the angle of the bell mouth 13 (preferably, the angle of the bell mouth 13 may be 90 °, and the angle of the pressure bearing face 12 may be 115 °), after the female coupler 1 is fixed to the male coupler 2, the pressure bearing face 12 can be tightly attached to the surface of the turned edge 11, in addition, the left brake hard tube 3 penetrates through the first through hole 5 and is in sealing connection with the first through hole 5 through sealant, and the right brake hard tube 4 penetrates through the second through hole 7 and is in sealing connection with the second through hole 7 through sealant, so that the sealing performance of the joint of the brake hard tubes is greatly improved.

The utility model discloses the advantage of implementing lies in: the connecting structure of the brake hard pipe of the utility model has the advantages that the left brake hard pipe 3 and the right brake hard pipe 4 are connected only through the female adapter 1 and the male adapter 2 at the joint of the brake hard pipe, the structural design is simple, and the installation is convenient; in addition, as the female joint 9 is arranged at one end of the left brake hard pipe 3, the left brake hard pipe 3 passes through the first through hole 5 and is hermetically connected with the female adapter 1 through the female joint 9, the male joint 10 is arranged at one end of the right brake hard pipe 4, and the right brake hard pipe 4 passes through the second through hole 7 and is hermetically connected with the male adapter 2 through the male joint 10, the original stamping process and welding process are omitted in the whole connecting structure, the cost is reduced, the weight of the whole vehicle is reduced, and the lightweight design concept is met; in addition, after the female adapter 1 and the male adapter 2 are fixed, the pressure bearing surface 12 in the male adapter 10 can be tightly attached to the surface of the bead 11 in the female adapter 9, and the sealing performance at the brake hard pipe joint is improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (3)

1. A connecting structure of a brake hard pipe comprises an internal thread joint, a left brake hard pipe, a right brake hard pipe and an external thread joint, and is characterized in that the left brake hard pipe and the right brake hard pipe are connected at the joint positions through the internal thread joint and the external thread joint, the internal thread joint comprises a first through hole and an internal thread, a concave joint is arranged at one end of the left brake hard pipe, the aperture of the internal thread is larger than that of the first through hole, the outer diameter of the concave joint is larger than that of the first through hole and smaller than that of the internal thread, and the left brake hard pipe penetrates through the first through hole and is connected with the internal thread joint in a sealing mode through the concave joint; one end of the right braking hard pipe is provided with a convex joint, the external thread joint is provided with a second through hole, the outer diameter of the convex joint is larger than the diameter of the second through hole and smaller than the aperture of the internal thread, and the right braking hard pipe penetrates through the second through hole and is hermetically connected with the external thread joint through the convex joint; the female connector is in a horn mouth shape, a curled edge is arranged on the outer side of the horn mouth and is tightly attached to the horn mouth, the male connector is provided with a pressure bearing surface, and the angle of the pressure bearing surface is larger than that of the horn mouth; after the internal thread joint and the external thread joint are fixed, the pressure bearing surface is tightly attached to the surface of the turned edge; the angle of the bell mouth is 90-120 degrees, and the angle of the pressure bearing surface is 90-120 degrees.

2. The connecting structure of the brake hard pipe according to claim 1, wherein the wall thickness of the brake hard pipe is not more than 1mm, the female screw joint is a hexagonal steel female screw nut, and the male screw joint is a hexagonal steel male screw nut; the female joint and the male joint are both formed by adopting a stamping process.

3. The connecting structure of the brake hard tube according to claim 1, wherein the brake hard tube is a double-layer roll-welded tube, and the number of the double-layer roll-welded tube is one or more; the multiple double-layer roll-welded pipes are installed side by side, and joints of the adjacent double-layer roll-welded pipes are staggered mutually.

Images