External locking self-plugging rivet for connecting cup-shaped new energy automobile body

Abstract

The utility model discloses an externally-locked self-plugging rivet for connecting a cup-shaped new energy automobile body, which comprises a rivet core cap, a rivet core cylinder is fixedly arranged below the rivet core cap, a rivet core rod is connected below the rivet core cylinder, a rivet body sleeve is sleeved outside the rivet core rod, a flange is connected below the rivet body sleeve, cup-shaped counter bores are arranged at the center of the rivet core cap and the center of the rivet core cylinder, and the rivet core cylinder is connected with the flange. The outer diameter of the rivet core cylinder is slightly larger than the inner diameter of the rivet body sleeve, a fracture part is arranged on the rivet core rod, and annular patterns are arranged below the fracture part. Riveting of metal plates with various thicknesses at the same station can be completed through rivets of one specification, misuse, reworking and uncontrollable cost caused by using multiple types of rivets are eradicated, the number of times of machine changing of all production machines is reduced, the production progress is accelerated, and product inventory and process management and control cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a cup-shaped external locking core-pulling rivet for connecting a body of a new energy vehicle. Background Art

[0002] At present, the connection of new energy vehicle body parts usually requires two or more rivets of different specifications to complete the riveting of different thicknesses due to the different sheet metal thicknesses of various parts. Therefore, in order to prevent product misuse, it is usually necessary to make different color identification on the product surface to distinguish product specifications. Moreover, there are many product specifications, which requires an increase in the number of production changes, making the production process more difficult to control, resulting in product inventory backlogs and affecting production progress. In addition, since the connection rivets of the body parts have high requirements for mechanical strength, similar products currently have only two diameters of φ4.8 and φ6.4, which cannot meet customer design requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the defects of the above-mentioned prior art and provide a cup-shaped external locking core-pulling rivet for connecting the body of new energy vehicles, which has a wide riveting range and can complete the riveting of various sheet metal thicknesses at the same work station with one specification.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a cup-shaped external locking core-pulling rivet for connecting the body of a new energy vehicle, comprising a core cap, a core tube is fixedly installed below the core cap, a core rod is connected below the core tube, a rivet body sleeve is arranged outside the core rod, a flange is connected below the rivet body sleeve, a cup-shaped countersunk hole is arranged in the center of the core cap and the core tube, the outer diameter of the core tube is slightly larger than the inner diameter of the rivet body sleeve, a fracture portion is arranged on the core rod, and an annular pattern is arranged below the fracture portion.

[0005] Furthermore, the center points of the nail core cap, the nail core tube, the nail core rod and the rivet body sleeve are all located on the same straight line.

[0006] Furthermore, the outer diameter of the nail core cap is slightly larger than the outer diameter of the nail core tube, and the outer diameter of the nail core tube is smaller than the outer diameter of the rivet body sleeve.

[0007] Furthermore, a guide surface which narrows toward the center is provided between the nail core tube and the nail core rod to guide the nail core tube into the rivet body sleeve.

[0008] Furthermore, an annular bevel is provided on the inner wall of the flange. During the riveting process, the riveting tool gun head and the fractured portion are cut to form an annular flange. The annular bevel cooperates with the annular flange to prevent the core rod from loosening or falling off.

[0009] Furthermore, the riveting range of the rivet is 3.0 to 14.5 mm.

[0010] The external locking cup rivet for new energy vehicles of the utility model has the following beneficial effects:

[0011] 1. A cup-shaped countersunk hole is opened in the center of the nail core cap and the nail core tube. After riveting, the cup body is deformed and stretched, and the riveting range is wide, covering various sheet metal thicknesses. One specification can meet the various sheet metal thicknesses at the same workstation, eliminating the use of multiple rivets to cause misuse, rework and uncontrollable costs, reducing the number of machine changes for each production machine, accelerating production progress, and reducing product inventory and process control costs;

[0012] 2. The outer diameter of the nail core tube is slightly larger than the inner diameter of the rivet body sleeve. Under the action of pulling the riveter, the rivet body sleeve is deformed and its diameter increases, pushing the connected parts close together, the nail core rod breaks, and the nail core tube is locked in the rivet body, which enhances the tensile and shear resistance of the riveted connection.

[0013] 3. An annular flange with a toothed cross section is set at the fracture of the nail core rod. After riveting is completed, the annular flange cooperates with the annular inclined surface of the inner wall of the flange, and the nail core tube is locked in the rivet body to prevent the nail core rod from loosening or falling off, thereby achieving waterproof and shock-resistant effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the state of the utility model after riveting is completed;

[0017] In the figure: 1. nail core cap, 2. nail core tube, 3. guide surface, 4. rivet body sleeve, 5. flange, 6. nail core rod, 7. cup-shaped countersunk hole, 8. fracture part, 9. annular flange. DETAILED DESCRIPTION

[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0019] As shown in the figure, a cup-shaped external locking blind rivet for connecting the body of a new energy vehicle comprises a core cap 1, a core tube 2 is fixedly installed below the core cap 1, a core rod 6 is connected below the core tube 2, a rivet body sleeve 4 is arranged on the outer sleeve of the core rod 6, a flange 5 is connected below the rivet body sleeve 4, a cup-shaped countersunk hole 7 is provided in the center of the core cap 1 and the core tube 2, the outer diameter of the core tube 2 is slightly larger than the inner diameter of the rivet body sleeve 4, a fracture portion 8 is provided on the core rod 6, and a ring pattern is provided below the fracture portion 8.

[0020] During implementation, the center points of the nail core cap 1, nail core tube 2, nail core rod 6 and rivet body sleeve 4 are all located on the same straight line; the outer diameter of the nail core cap 1 is slightly larger than the outer diameter of the nail core tube 2, and the outer diameter of the nail core tube 2 is smaller than the outer diameter of the rivet body sleeve 4; a guide surface 3 that shrinks toward the center is provided between the nail core tube 2 and the nail core rod 6 to guide the nail core tube 2 to enter the rivet body sleeve 4; the nail core rod 6 is provided with an annular flange 9 with a toothed cross-section at the fracture portion 8, and the annular flange 9 cooperates with the annular inclined surface of the inner wall of the flange 5 to prevent the nail core rod 6 from loosening or falling off; the riveting range of the rivet reaches 3.0 to 14.5 mm.

[0021] The rivet of the utility model has a cup-shaped countersunk hole 7 in the center of the nail core cap 1 and the nail core tube 2. After riveting, the cup body is deformed and stretched, and the riveting range is wide, covering various sheet metal thicknesses. One specification can meet various sheet metal thicknesses at the same work station, and the use of multiple rivets is prevented from causing misuse, rework and uncontrollable costs, reducing the number of machine changes of each production machine, accelerating the production progress, and reducing product inventory and process control costs; the outer diameter of the nail core tube 2 is slightly larger than the inner diameter of the rivet body sleeve 4, and under the action of pulling the riveter, the outer diameter of the nail core tube 2 is slightly larger than the inner diameter of the rivet body sleeve 4, and under the action of pulling the riveter, the inner ... , the rivet body sleeve 4 is deformed and its diameter becomes larger, pushing the connected parts close together, the nail core rod 6 breaks, and the nail core tube 2 is locked in the rivet body sleeve 4, thereby enhancing the tensile and shear resistance of the riveted connection parts; an annular inclined surface is arranged on the inner wall of the flange 5, and during the riveting process, the rivet tool gun head and the broken part 8 are cut to form an annular flange 9, and the annular inclined surface cooperates with the annular flange 9, and the nail core tube 2 is locked in the rivet body sleeve 4, preventing the nail core rod 6 from loosening or falling off, thereby playing a role in waterproofing and shock resistance.

[0022] When implemented, the technical requirements met by this utility model are as follows:

[0023] 1. Material:

[0024] Rivet body material: 10B21 Nail core material: SWCH35K

[0025] 2. Mechanical properties:

[0026] Shear load: ≥16500N

[0027] Tensile load: ≥11500N

[0028] Nail core removal force: ≥100N

[0029] Nail head holding force: ≥1800N

[0030] Test method refers to GB / T 3098.18

[0031] 3. Surface treatment:

[0032] Rivet body: Environmentally friendly electroplating

[0033] Nail core: environmentally friendly electroplating

[0034] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cup-shaped external locking blind rivet for connecting the body of a new energy vehicle, characterized by: The invention comprises a nail core cap (1), a nail core tube (2) is fixedly installed below the nail core cap (1), a nail core rod (6) is connected below the nail core tube (2), a rivet body sleeve (4) is provided on the outer shell of the nail core rod (6), a flange (5) is connected below the rivet body sleeve (4), a cup-shaped countersunk hole (7) is provided in the center of the nail core cap (1) and the nail core tube (2), the outer diameter of the nail core tube (2) is slightly larger than the inner diameter of the rivet body sleeve (4), a fracture portion (8) is provided on the nail core rod (6), and a ring pattern is provided below the fracture portion (8).

2. According to claim 1, a cup-shaped external locking blind rivet for connecting the body of a new energy vehicle is characterized by: The center points of the nail core cap (1), the nail core tube (2), the nail core rod (6) and the rivet body sleeve (4) are all located on the same straight line.

3. The cup-shaped external locking blind rivet for connecting the body of a new energy vehicle according to claim 1 is characterized in that: The outer diameter of the nail core cap (1) is slightly larger than the outer diameter of the nail core tube (2), and the outer diameter of the nail core tube (2) is smaller than the outer diameter of the rivet body sleeve (4).

4. The cup-shaped external locking blind rivet for connecting the body of a new energy vehicle according to claim 1 is characterized in that: A guide surface (3) which narrows toward the center is provided between the nail core tube (2) and the nail core rod (6) to guide the nail core tube (2) into the rivet body sleeve (4).

5. The cup-shaped external locking blind rivet for connecting the body of a new energy vehicle according to claim 1 is characterized in that: The inner wall of the flange (5) is provided with an annular bevel. During the riveting process, the riveting tool gun head and the fractured portion (8) are cut to form an annular flange (9). The annular bevel cooperates with the annular flange (9) to prevent the core rod (6) from loosening or falling off.

6. The cup-shaped external locking blind rivet for connecting the body of a new energy vehicle according to claim 1 is characterized in that: The riveting range of the rivet is 3.0 to 14.5 mm.

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