Energy absorption type variable cross-section pressing rivet aluminum sleeve

Abstract

The invention discloses an energy absorption type variable cross-section pressing rivet aluminum sleeve which is composed of a sleeve body, an axial center through hole is formed in the sleeve body, an energy absorption ring which is of an integrated structure with the sleeve body is arranged at the upper end of the sleeve body, a boss is arranged at the lower end of the sleeve body, a locking ring groove is formed in the outer side wall of the boss, and the locking ring groove is matched with the boss. The energy-absorbing sleeve has the advantages that the sleeve body and the energy-absorbing ring are integrated together to form an integral structure, the structure is simple, the energy-absorbing sleeve is very convenient to install, an existing sleeve and an existing energy-absorbing ring are installed together, and the energy-absorbing sleeve is very convenient to install. And meanwhile, it is effectively guaranteed that the installation position of the energy absorption ring is coaxial with the sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of supporting devices, and more specifically to the technical field of supporting sleeves. Background Art

[0002] With the development trend of lightweight new energy vehicles, thin-walled profiles with closed or non-closed cross-sections are widely used in the automotive and other manufacturing industries. When other components need to be fixedly installed on thin-walled profiles with closed or non-closed cross-sections, in order to facilitate installation, holes are usually opened on the thin-walled profiles first, and bolts and other connecting parts are passed through the holes of the components to be installed and the thin-walled profiles, and then nuts are used to tighten them to fix the components to be installed on the thin-walled profiles.

[0003] For example, when it is necessary to fix the side reinforcement sill beam of the car on the die-cast bottom plate of the car body, due to the need for lightweight, the side reinforcement sill beam of the car is made of thin-walled profiles. In order to prevent the thin-walled profile from deformation during fixing, the side reinforcement sill beam is first supported by the pressure riveting installation sleeve in the hole opened in the thin-walled profile, and then the side reinforcement sill beam is connected and fastened to the die-cast bottom plate of the car body with bolts and nuts. In addition, when the car is subjected to the front collision force, in order to effectively protect the life safety of the occupants, it is usually adopted to install an energy absorbing ring in the hole opened in the thin-walled profile. The energy absorbing ring and the sleeve need to be installed coaxially, and the energy absorbing ring is subjected to shear deformation for buffering, so as to achieve the purpose of protecting the safety of the occupants in the car. Therefore, it is necessary to install the energy absorbing ring again in the hole opened in the thin-walled profile. This structure and installation method are not only troublesome to install, but also the installation position of the energy absorbing ring is difficult to accurately control. Summary of the invention

[0004] The purpose of the present invention is to provide an energy-absorbing variable-section riveted aluminum sleeve in order to solve the above-mentioned deficiencies. The sleeve and the energy-absorbing ring are integrated together to form an integral structure, which not only has the support function of the sleeve, but also has the energy-absorbing effect. The structure is simple and easy to install. At the same time, it can effectively ensure that the installation position of the energy-absorbing ring is coaxial with the sleeve.

[0005] The technical solutions adopted by the present invention to solve the above technical problems are as follows: The energy-absorbing variable-section riveted aluminum sleeve consists of a cylinder with an axial center through hole. An energy-absorbing ring which is an integral structure with the cylinder is arranged at the upper end of the cylinder. A boss is arranged at the lower end of the cylinder, a locking ring groove is arranged on the outer side wall of the boss, and knurled teeth are also arranged on the outer side of the lower end of the cylinder.

[0006] Preferably, a step shape is formed between the cylinder and the energy absorbing ring.

[0007] Preferably, the energy absorbing ring is coaxial with the central through hole of the cylinder.

[0008] Preferably, the cross-section of the locking ring groove is a right-angled trapezoid.

[0009] Preferably, the entire sleeve is made of aluminum.

[0010] The beneficial effects that can be achieved by the present invention using the above technical solution are: 1. The cylinder body and the energy absorbing ring are integrated together to form an integral structure, which is not only simple in structure but also very convenient to install. The existing sleeve and the energy absorbing ring are installed together, and at the same time, the installation position of the energy absorbing ring is effectively ensured to be coaxial with the sleeve.

[0011] 2. This sleeve not only has the supporting function of the sleeve, but also has the energy absorbing effect.

[0012] 3. The step-shaped structure between the cylinder and the energy-absorbing ring can play the role of positioning and limiting during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of a top view structure; Figure 3 for Figure 1 Schematic diagram of the structure viewed from above; Figure 4 for Figure 1 A schematic diagram of the partially enlarged structure at center A; Figure 5 It is a schematic diagram of the full cross-section structure of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention. DETAILED DESCRIPTION

[0014] Depend on Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the energy-absorbing variable-section pressure-riveted aluminum sleeve is composed of a cylinder 1, in which an axial central through hole 2 is opened, and an energy-absorbing ring 3 which is an integral structure with the cylinder 1 is arranged at the upper end of the cylinder 1. The energy-absorbing ring 3 is coaxial with the central through hole 2 of the cylinder 1. The cylinder 1 and the energy-absorbing ring 3 are integrated together to form an integral structure, which is not only simple in structure but also very convenient to install. The existing sleeve and the energy-absorbing ring are installed together, and at the same time, it is effectively guaranteed that the installation position of the energy-absorbing ring is the same as that of the sleeve. The shaft forms a step shape between the cylinder 1 and the energy absorbing ring 3, which can play the role of positioning and limiting during installation. The lower end of the cylinder 1 is provided with a boss 4, and a locking ring groove 5 is provided on the outer wall of the boss 4. The outer side of the lower end of the cylinder 1 is also provided with knurled teeth 6. The cross section of the locking ring groove 5 is a right-angle trapezoid, so that during the riveting installation process, the deformed part of the thin-walled aluminum profile can flow smoothly and fully into the locking ring groove 5, fully filling the locking ring groove 5, and achieving a better axial anti-slip function. The sleeve is made of aluminum as a whole.

Claims

1. Energy-absorbing variable-section riveted aluminum sleeve, characterized by: It consists of a cylinder with an axial center through hole, an energy absorbing ring which is an integral structure with the cylinder is arranged at the upper end of the cylinder, a boss is arranged at the lower end of the cylinder, a locking ring groove is arranged on the outer wall of the boss, and knurled teeth are also arranged on the outer side of the lower end of the cylinder.

2. The energy-absorbing variable-section riveted aluminum sleeve according to claim 1 is characterized in that: A step shape is formed between the cylinder and the energy absorbing ring.

3. The energy-absorbing variable-section riveted aluminum sleeve according to claim 1 or 2, characterized in that: The energy absorbing ring is coaxial with the central through hole of the cylinder.

4. The energy-absorbing variable-section riveted aluminum sleeve according to claim 1 or 2, characterized in that: The cross section of the locking ring groove is a right-angle trapezoid.

5. The energy-absorbing variable-section riveted aluminum sleeve according to claim 1 or 2, characterized in that: The sleeve is made entirely of aluminum.

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