Reinforcing tube and manufacturing method thereof

Abstract

In order to solve the technical problem that an existing A-column upper sidebeam reinforcement structure is large in weight, the invention provides a reinforcing tube and a manufacturing method of the reinforcing tube. The reinforcing tube is a carbon fiber composite tube and comprises a first section, a second section, a third section, a fourth section, a fifth section and a sixth section which are sequentially connected, wherein the thickness of the second section, the thickness of the fourth section and the thickness of the sixth section are equal, and the thickness of the first section, the thickness of the third section and the thickness of the fifth section are all larger than the thickness of the second section. The reinforcing tube is used for connecting a vehicle side wall outer plate and a vehicle side wall inner plate. The reinforcing tube is manufactured through a variable-thickness three-dimensional braiding process, and by fully utilizing the designability of a three-dimensional braided carbon fiber winding technology, the performance is guaranteed, meanwhile, extreme light weight is achieved, and the optimal structural design is achieved. The material thickness of the tubular beam is changed through design at different positions, the material thickness is increased at the main force bearing and connecting positions, and the material thickness is reduced at the secondary force bearing positions, so that the lighter weight is achieved under the same performance as that of a metal reinforcing piece.

Description

technical field

[0001] The invention relates to the field of vehicle structures, in particular to a reinforcing pipe and a method for manufacturing the reinforcing pipe. Background technique

[0002] In the existing A-pillar upper side beam strengthening scheme, the thickness of the overall tube beam is uniform. Due to the weak high temperature resistance of the cured resin used, it is necessary to adjust the temperature and time of electrophoretic baking in the painting workshop, and the painting workshop needs to be restructured, which is not suitable for the production of the old production line; Get the most weight loss benefits. The commonly used A-pillar reinforcement is high-strength steel. In order to meet the collision safety requirements, multi-layer reinforcement plates are required, which are heavy and not conducive to lightweight.

[0003] The existing A-pillar upper side beam reinforcement scheme does not achieve the optimal weight-reducing structural design,...

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