阅读说明：本技术 一种护管总成 (Protective pipe assembly ) 是由 戴金美 于 2019-09-22 设计创作，主要内容包括：本发明公开了一种护管总成,包括有上护管、下护管,所述上护管的上端安装有轴承,所述上护管通过轴承与转向轴连接,所述下护管的底部设置有安装座,所述安装座与车架连接,其特征在于所述上护管的下端冲压有若干个铆点,所述铆点沿圆周方向均匀设置,所述上护管通过铆点与下护管过盈压合,所述上护管和下护管的过盈量满足压溃力1500-2500N。本发明与传统的中间用塑胶套进行注胶连接相比,降低了生产成本,提高了生产效率,安装时,将方向盘的转向轴与轴承装配,将安装座安装在车架上即可,安装方便快捷。(The invention discloses a protective tube assembly which comprises an upper protective tube and a lower protective tube, wherein a bearing is installed at the upper end of the upper protective tube, the upper protective tube is connected with a steering shaft through the bearing, an installation seat is arranged at the bottom of the lower protective tube, and the installation seat is connected with a frame. Compared with the traditional glue injection connection by using a plastic sleeve in the middle, the invention reduces the production cost and improves the production efficiency.)

1. A protective pipe assembly comprises an upper protective pipe and a lower protective pipe, wherein a bearing is installed at the upper end of the upper protective pipe, the upper protective pipe is connected with a steering shaft through the bearing, a mounting seat is arranged at the bottom of the lower protective pipe and connected with a frame, and the protective pipe assembly is characterized in that a plurality of riveting points are punched at the lower end of the upper protective pipe and evenly arranged along the circumferential direction, the upper protective pipe is in interference fit with the lower protective pipe through the riveting points, and the interference magnitude of the upper protective pipe and the lower protective pipe meets the crushing force of 1500-2500N.

2. The grommet assembly as set forth in claim 1, wherein said upper grommet is welded with a harness support having a through hole for passing a harness therethrough.

Technical Field

The invention relates to an improved automobile steering system, in particular to a protective tube assembly.

Background

The automobile steering system is used for controlling the running direction of an automobile, the upper end of a steering shaft of the steering system is connected with an automobile square plate, the lower end of the steering shaft is connected with a steering intermediate shaft, the steering shaft transmits force applied to the steering wheel to the steering intermediate shaft, the force is transmitted to a steering gear through the steering intermediate shaft, and the steering gear drives wheels to steer, so that the automobile is steered. The steering shaft is arranged on the frame through the protective pipe assembly; the existing protective pipe assembly has the problems of low driving safety coefficient and high installation difficulty.

Disclosure of Invention

In view of the technical problems in the background art, the technical problem to be solved by the invention is to provide a protective pipe assembly which is high in safety factor and convenient to transport and install.

In order to solve the technical problems, the invention adopts the following technical scheme: the protective pipe assembly comprises an upper protective pipe and a lower protective pipe, wherein a bearing is installed at the upper end of the upper protective pipe, the upper protective pipe is connected with a steering shaft through the bearing, a mounting seat is arranged at the bottom of the lower protective pipe and connected with a frame, and the protective pipe assembly is characterized in that a plurality of riveting points are punched at the lower end of the upper protective pipe and evenly arranged along the circumferential direction, the upper protective pipe is in interference fit with the lower protective pipe through the riveting points, and the interference magnitude of the upper protective pipe and the lower protective pipe meets the crushing force of 1500-2500N.

The upper protection pipe is welded with a wire harness support, and the wire harness support is provided with a through hole for a wire harness to pass through.

The upper protection pipe is in interference fit with the lower protection pipe through the rivet, the interference magnitude meets the crushing force of 1500-2500N, compared with the traditional glue injection connection with a plastic sleeve in the middle, the production cost is reduced, the production efficiency is improved, during installation, a steering shaft of a steering wheel is assembled with a bearing, an installation seat is installed on a frame, and the installation is convenient and rapid.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is an enlarged view of FIG. 2A of the present invention.

Detailed Description

The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings. This kind of pillar assembly, including last pillar 1, lower pillar 3, bearing 5 is installed to the upper end of going up the pillar, go up the pillar and pass through the steering shaft connection of bearing and steering wheel, it has wire harness support 2 to go up pillar skin weld, wire harness support has the through-hole 6 that supplies the pencil to pass, and wire harness support 2 arranges the pencil in order, and the pencil is in disorder not only influences the installation, has had the potential safety hazard moreover. The bottom of the lower protective pipe 3 is provided with a mounting seat 4, the mounting seat is connected with a vehicle frame and can be connected by a locking bolt, the lower end of the upper protective pipe 1 is punched with a plurality of riveting points 7, in the embodiment, the riveting points 7 are eight, the riveting points 7 are uniformly arranged along the circumferential direction, the upper protective pipe 1 is in interference press fit with the lower protective pipe 3 through the riveting points, because the riveting points 7 are uniformly arranged, the bearing force of each angle of the upper protective pipe 1 and the lower protective pipe 3 is the same, the interference magnitude of the upper protective pipe 1 and the lower protective pipe 3 meets the crushing force of 1500-2500N, if the interference magnitude of the upper protective pipe and the lower protective pipe is beyond the range, the safety coefficient is greatly reduced, if the interference magnitude of the upper protective pipe and the lower protective pipe is too low, the slight impact force easily causes the upper protective pipe to move downwards relative to the lower protective pipe, if the interference magnitude is too high, the significance is lost, and when a vehicle collides, the upper protective pipe still, the impact force is not cushioned, so that the driver is severely impacted. The upper protection pipe, the lower protection pipe and the bearing are assembled, when the steering wheel is installed, the steering shaft of the steering wheel is assembled with the bearing, the installation seat is installed on the car frame through the locking bolt, and the installation is convenient and rapid.