Flexible shaft attachment joint and production method thereof

Abstract

The invention discloses a flexible shaft attachment joint, comprising a joint body (2) fixedly connected with a hose (1). The hose (1) comprises a winding steel wire layer (1.1), the joint body (2) is of an integral structure, the winding steel wire layer (1.1) is embedded in the wall of a centre hole of the joint body (2), the other end of the centre hole of the joint body (2) is provided with a ball seat insert (3), a through hole (3.1) is formed in the ball seat insert (3) and communicated with the hose (1), and the axis of the through hole (3.1) and the axis of one end, in the centre hole of the joint body (2), of the hose (1) are on the same line. A production method comprises the following steps: (1) peeling; (2) extrusion molding, angle opening or flaring; and (3) injection molding. Compared with the prior art, the flexible shaft attachment joint has the characteristics of integral structure, low possibility of corrosion, little influence on environment in the preparation process, good use stability and flexibility, low storage cost and high production efficiency.

Description

technical field [0001] The invention belongs to the field of auto parts, in particular to a flexible shaft connection joint and a production method thereof. Background technique [0002] At present, the flexible shaft connection joint of the prior art is to use the outer protective tube of the flexible shaft (the outer protective tube of the flexible shaft is also called a hose, and the general hose is composed of an inner lining pipe layer, a steel belt layer, a winding steel wire layer and The outer coating plastic layer (skin layer), and the steel belt layer can be omitted or made of plastic material according to different application conditions) The joint parts and the steel wire layer in the flexible shaft are pressed tightly through the riveting process, but the joint parts are easy to be riveted during the riveting process The outer protective coating is damaged, making the joint parts easy to be corroded during storage or use, which in turn affects the service streng...

AI Technical Summary

Problems solved by technology

[0002] At present, the flexible shaft connection joint of the prior art is to use the outer protective tube of the flexible shaft (the outer protective tube of the flexible shaft is also called a hose, and the general hose is composed of an inner lining pipe layer, a steel belt layer, a winding steel wire layer and The outer coating plastic layer (skin layer), and the steel belt layer can be omitted or made of plastic material according to different application conditions) The joint parts and the steel wire layer in the flexible shaft are pressed tightly through the riveting process, but the joint parts are easy to be riveted during the riveting process The outer protective coating is damaged, which makes the joint parts easy to be corroded during storage or use, which affects the service strength and service life of the joint parts. In areas with high corrosion intensity, the overall damage of the joint parts may even occur.

At the same time, the protective coating on the outside of the joint parts is likely to produce environmentally harmful substances during the production process and cause environmental pollution; moreover, the winding steel wire layer in the hose and the casing in the connecting joint are fastened and connected by riveting process , the riveting process will produce riveting process indentations, and it is easy to deform the connecting joint, which will affect the flexibility of the flexible shaft

Images