CN203114975U

CN203114975U - Automobile rear protruding type brake plastic wheel cylinder

Info

Publication number: CN203114975U
Application number: CN 201320080122
Authority: CN
Inventors: 郑荣; 王泳峰; 郑东明; 高鸣晓; 李兰珍; 黄伟中
Original assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Current assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Priority date: 2013-02-21
Filing date: 2013-02-21
Publication date: 2013-08-07
Anticipated expiration: 2023-02-21

Abstract

The utility model discloses an automobile rear protruding type brake plastic wheel cylinder. A steel tube is embedded between a plastic inner tube and a plastic outer case in an integral injection molding mode. Two end faces of the steel tube are respectively provided with bosses extruding outwards and distributed evenly for ensuring that the steel tube is embedded into plastic. The plastic outer case is provided with a boss face. A plurality of rectangular grooves perpendicular to axes of a plastic outer tube are formed in an oil tube base along two sides of the plastic outer case, wherein the number of the rectangular grooves is the same as that of the axes of the plastic outer tube. The oil tube base is embedded into the boss face of the plastic outer case through the rectangular grooves. An air outlet screw hole and an oil inlet hole are communicated with the plastic inner tube and formed in the oil tube base. Due to one-time injection molding, the automobile rear protruding type brake plastic wheel cylinder is simple in modeling and machining process and short in production period. Due to the fact that the inner wall of a cylinder hole is made of the plastic, mechanical machining is not needed, and the automobile rear protruding type brake plastic wheel cylinder has strong corrosion resistance and can not be corroded by brake fluid easily. Due to the fact that a steel tube sleeve is embedded, enough mechanical property is ensured, and the automobile rear protruding type brake plastic wheel cylinder can not be deformed by pressing easily. In addition, as metal materials are replaced by the plastic, the wheel cylinder is small in total mass and beneficial for improving customer satisfaction.

Description

Drum brake plastics wheel cylinder behind a kind of automobile

Technical field

The utility model relates to drum brake behind a kind of automobile, especially relates to drum brake plastics wheel cylinder behind a kind of automobile.

Background technique

Along with making rapid progress of scientific and technological level, automobile product just develops towards lightweight, speed up, energy-conservationization and comfortable, multi-functional, low-cost, long-life direction.Yet the automobile brake wheel cylinder of domestic production at present all is to use the metal casting moulding, and need carry out machining, the manufacturing process more complicated, and manufacturing procedure is various, and the manufacture cycle is long, and cost is higher.

Therefore, replacing traditional metal materials with high performance composite material, be applied in the production of wheel cylinder, is the key subjects that we grow with each passing hour and develop.

Summary of the invention

The deficiency various at metal wheel cylinder manufacturing process complexity, manufacturing procedure in the background technique, that the manufacture cycle is long, the purpose of this utility model is to provide drum brake plastics wheel cylinder behind a kind of automobile, its moulding and processing technology are simply quick, with short production cycle, and have the good mechanical performance.

To achieve these goals, the technical solution adopted in the utility model is:

The utility model comprises plastic inner pipe, steel pipe, plastic casing and oil pipe seat; Be embedded with steel pipe between plastic inner pipe and the plastic casing, and be injection molded into one, the steel pipe two ends have the boss of outside extruding respectively, boss is distributed on the steel pipe both ends of the surface circumference, by the boss location, guarantee that steel pipe embeds in the plastics, plastic casing is provided with boss face, the oil pipe seat has many rectangle grooves with identical number of plastic outer tube axis normal along the both sides of plastic casing, the oil pipe seat is embedded in the boss face of plastic casing by rectangle groove; Have the venting screw and the oil inlet hole that are connected with plastic inner pipe on the oil pipe seat.

Described plastic inner pipe and plastic casing material are PA66 GF50 plastics; The wall thickness of described steel pipe is 1.5mm, and material is No. 20 steel.

The beneficial effect that the utlity model has is:

Wheel cylinder overall time of the present utility model molding and forming, moulding and processing technology are simply quick, and be with short production cycle.Because its cylinder hole inwall is plastics, need not machining, shows that roughness improves a lot than traditional metal materials, and has stronger corrosion resistance, is difficult for being braked corrosion; Embedded steel pipe socket has guaranteed the mechanical property that it is enough, is difficult for compressive deformation; In addition, plastics replace metallic material, and its wheel cylinder gross mass is little, also helps to improve customer satisfaction.

Description of drawings

Fig. 1 is that the axle that waits of the present utility model is surveyed view.

Fig. 2 is inner section figure of the present utility model.

Fig. 3 is the structure explosive view before the utility model moulding.

Among the figure: 1, plastic inner pipe, 2, steel pipe, 3, plastic casing, 4, the oil pipe seat.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

As Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises plastic inner pipe 1, steel pipe 2, plastic casing 3 and oil pipe seat 4; Be embedded with steel pipe 2 between plastic inner pipe 1 and the plastic casing 3, and be injection molded into one, steel pipe 2 two ends have the boss of outside extruding respectively, boss is distributed on the steel pipe 2 both ends of the surface circumference, by the boss location, guarantee that steel pipe 2 embeds in the plastics, plastic casing 3 is provided with boss face, oil pipe seat 4 has many rectangle grooves with identical number of plastic outer tube 3 axis normal along the both sides of plastic casing 3, oil pipe seat 4 is embedded in the boss face of plastic casing 3 by rectangle groove; Have the venting screw and the oil inlet hole that are connected with plastic inner pipe 1 on the oil pipe seat 4.

Plastic inner pipe 1 and plastic casing 3 materials are PA66 GF50 plastics; The wall thickness of steel pipe 2 is 1.5mm, and material is No. 20 steel.

Preparation process of the present utility model is:

Steel pipe 2 and oil pipe seat 4 machine shaping in advance, steel pipe 2 is positioned in the injection machine die cavity by the both sides boss, and oil pipe seat 4 is positioned in the die cavity by filler opening equally; PA66 GF50 plastic raw material after injecting drying and dividing the water check, molding and forming in injection machine then.

Above-mentioned example plastics wheel cylinder, intensity and amount of deformation satisfy its working condition requirement fully by cae analysis, after the application, have alleviated the part gross mass, have simplified production technology, and smooth plastic liner has reduced the possibility of wheel cylinder oil impregnate or leakage of oil greatly.

Claims

1. drum brake plastics wheel cylinder behind the automobile is characterized in that: comprise plastic inner pipe (1), steel pipe (2), plastic casing (3) and oil pipe seat (4); Be embedded with steel pipe (2) between plastic inner pipe (1) and the plastic casing (3), and be injection molded into one, steel pipe (2) two ends have the boss of outside extruding respectively, boss is distributed on steel pipe (2) the both ends of the surface circumference, locate by boss, guarantee that steel pipe (2) embeds in the plastics, plastic casing (3) is provided with boss face, oil pipe seat (4) has many rectangle grooves with identical number of plastic outer tube (3) axis normal along the both sides of plastic casing (3), oil pipe seat (4) is embedded in the boss face of plastic casing (3) by rectangle groove; Have venting screw and the oil inlet hole that is connected with plastic inner pipe (1) on the oil pipe seat (4).

2. drum brake plastics wheel cylinder behind a kind of automobile according to claim 1, it is characterized in that: described plastic inner pipe (1) and plastic casing (3) material are PA66 GF50 plastics; The wall thickness of described steel pipe (2) is 1.5mm, and material is No. 20 steel.