Sealing step type rivet nut with positioning flange

Abstract

The utility model discloses a sealing step type rivet nut with a positioning flange, which comprises a barrel, a flange plate is arranged at the upper end of the outer side of the barrel, a positioning ring is arranged at the upper end of the flange plate, a central hole of the positioning ring is coaxial with and communicated with a central hole of the barrel, foam is sleeved on the positioning ring at the upper end of the flange plate, and the positioning ring is provided with a positioning flange. A positioning ring is arranged at the upper end of the flange plate, a step is arranged on the outer side of the portion, located at the lower end of the flange plate, of the cylinder body, the portion, located at the lower end of the step, of the cylinder body is a deformation area, and threads are arranged in a center hole of the portion, located at the lower end of the deformation area, of the cylinder body. The positioning ring can be conveniently used for positioning the sealing foam during mounting, so that the rivet nut can be quickly mounted, and the sealing performance of a product can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and more specifically to the technical field of rivet nuts. Background Art

[0002] Rivet nuts are nuts that are fastened to connected parts by riveting. Rivet nuts are mainly used to form internal threads on thin metal plates by riveting and then connect with bolts. They are firmly riveted, highly efficient to install and easy to use, so they are widely used in the assembly of electromechanical and light industrial products such as automobiles, home appliances, aviation, and instruments.

[0003] The rivet nut is mainly composed of a cylinder, a flange is provided on the upper outer end of the cylinder, and a thread is provided on the inner lower part of the center hole of the cylinder. The thread is used for connection and is required to have a certain load-holding capacity. An annular groove is provided above the inner thread of the center hole of the cylinder, and the annular groove is a deformation zone during the riveting process. The common rivet nuts currently have poor sealing effect after riveting, and cannot be used in occasions with strict sealing requirements, such as when fixing the battery pack on new energy vehicles, it is necessary to prevent leakage at the riveting part of the rivet nut to avoid damage to the inside of the battery pack. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing step-type rivet nut with a positioning valve flange in order to solve the above-mentioned shortcomings. By setting the structural form of the step, the rivet nut has good sealing performance and can also facilitate the installation of the seal.

[0005] The technical solutions adopted by the utility model to solve the above technical problems are as follows:

[0006] The sealing step-type rivet nut with a positioning valve flange is composed of a cylinder, a flange is provided at the upper end of the outer side of the cylinder, a positioning ring is provided at the upper end of the flange, the center hole of the positioning ring is coaxial with and intersected with the center hole of the cylinder, foam is sleeved on the positioning ring at the upper end of the flange, a step is provided on the outer side of the cylinder at the lower end of the flange, the cylinder at the lower end of the step is a deformation zone, and a thread is provided in the center hole of the cylinder at the lower end of the deformation zone.

[0007] Preferably, the side wall thickness of the positioning ring is greater than the side wall thickness of the step on the cylinder.

[0008] Preferably, the ratio of the flange surface width to the flange thickness is 3.5-6.

[0009] Preferably, the step on the cylinder is a regular polygon.

[0010] Preferably, a sealant is applied at the junction between the lower end of the flange and the step.

[0011] The beneficial effects that the utility model can achieve by adopting the above technical solutions are:

[0012] 1. By setting a positioning ring on the upper end of the flange, it is convenient to use the positioning ring to position the sealing foam during installation, which is not only conducive to the rapid installation of the rivet nut, but also conducive to improving the sealing performance of the product;

[0013] 2. By setting a step on the lower end of the flange, when the product is riveted to the hole on a multi-layer sheet metal with thin wall thickness, the step can be used for positioning and protection to prevent deformation around the hole under the action of the riveting force;

[0014] 3. By setting the step structure, the rivet nut has good sealing performance and is convenient for the installation of the seal;

[0015] 4. By setting the side wall thickness of the positioning ring to be greater than the side wall thickness of the step on the cylinder, it is beneficial to directly apply the riveting force to the riveted high-strength steel plate through the step structure, thereby protecting the sheet metal between the riveted steel plate and the flange;

[0016] 5. By setting the flange surface width to a ratio of 3.5-6 to the flange thickness, the stress distribution of the flange compressive stress field after riveting is fully utilized, and the multilayer board is tightly fixed between the flange and the deformed protrusion after riveting of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a half-section structure of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model after riveting;

[0020] Figure 4 It is a schematic diagram of the compressive stress field distribution of the flange after riveting according to the utility model. DETAILED DESCRIPTION

[0021] Depend on Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the sealing step-type rivet nut with a positioning valve flange is composed of a cylinder 1, a flange 2 is arranged on the upper end of the outer side of the cylinder 1, a positioning ring 3 is arranged on the upper end of the flange 2, the center hole of the positioning ring 3 is coaxial with and interpenetrates with the center hole of the cylinder 1, and a foam 4 is sleeved on the positioning ring 3 located at the upper end of the flange 2, so that the sealing foam 4 can be positioned by using the positioning ring 3 during installation, which is not only conducive to the rapid installation of the rivet nut, but also conducive to improving the sealing performance of the product, a step 5 is arranged on the outer side of the cylinder 1 located at the lower end of the flange 2, and the cylinder 1 located at the lower end of the step 5 is a deformation zone 6, and a thread 7 is arranged in the center hole of the cylinder 1 located at the lower end of the deformation zone 6. When this product is riveted on a multi-layer sheet metal with a thin wall thickness When the hole on the part 8 is located, the step 5 can be used for positioning and protection to prevent deformation around the hole under the action of the riveting force. The side wall thickness of the positioning ring 3 is greater than the side wall thickness of the step on the cylinder 1, which is conducive to directly applying the riveting force to the riveted high-strength steel plate 9 through the stepped structure, thereby protecting the sheet metal part 8 between the riveted steel plate 9 and the flange 2. The ratio of the disk width t of the flange 2 to the thickness of the flange 2 is 3.5-6, which makes full use of the stress distribution of the compressive stress field of the flange 2 after riveting, and tightly fixes the multilayer board between the flange 2 and the deformed protrusion after riveting the product. The step 5 on the cylinder is a regular polygon, and the joint between the lower end of the flange 2 and the step 5 is coated with sealant.

Claims

1. The sealed stepped rivet nut with a positioning valve flange is composed of a cylinder and is characterized by: A flange is provided at the upper end of the outer side of the cylinder, and a positioning ring is provided at the upper end of the flange. The center hole of the positioning ring is coaxial and intersecting with the center hole of the cylinder, and foam is sleeved on the positioning ring at the upper end of the flange. A step is provided on the outer side of the cylinder at the lower end of the flange, and the cylinder at the lower end of the step is a deformation zone, and a thread is provided in the center hole of the cylinder at the lower end of the deformation zone.

2. The sealing stepped rivet nut with a positioning valve flange according to claim 1, characterized in that: The side wall thickness of the positioning ring is greater than the side wall thickness of the step on the cylinder.

3. The sealing stepped rivet nut with a positioning valve flange according to claim 1, characterized in that: The ratio of the flange surface width to the flange thickness is 3.5-6.

4. The sealing stepped rivet nut with a positioning valve flange according to claim 1, 2 or 3, characterized in that: The step on the cylinder is a regular polygon.

5. The sealing stepped rivet nut with a positioning valve flange according to claim 1, 2 or 3, characterized in that: The joint between the lower end of the flange and the step is coated with sealant.

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