Rivet stud positioning and assembling structure for CTB battery box body

Abstract

The utility model discloses a rivet stud positioning and assembling structure used on a CTB battery box body, which comprises a boundary beam and a rivet stud, the rivet stud is provided with a screw part and a deformation nut positioned at the lower end of the screw part, the upper end of the deformation nut is provided with a support part, the upper part of the boundary beam is provided with a rivet hole penetrating through the top of the boundary beam, and the rivet hole is communicated with the support part. A first sinking groove and a second sinking groove are sequentially formed in the upper end of the rivet pulling hole from top to bottom, the deformation nut is arranged on the lower portion of the rivet pulling hole in a penetrating mode, the supporting part is supported in the second sinking groove, and the screw rod part upwards penetrates out of the rivet pulling hole. Annular gaskets are fixedly installed in the first sinking grooves, and the upper ends of the annular gaskets are flush with the surfaces of the upper portions of the edge beams. The pull riveting device has the advantages that by means of the design of the second-level sinking grooves, the thickness of the pull riveting hole matched with the deformation nut is reduced, and therefore it can be guaranteed that the pull riveting stud of the normal specification is stably fixed to the edge beam in a pull riveting mode, and the annular gasket arranged in the first sinking groove guarantees that the surface of the edge beam is flat; therefore, the high-voltage wire harness pipe clamp can be stably supported on the surface of the boundary beam.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, specifically to a rivet stud positioning assembly structure for CTB battery housing. Background Technology

[0002] CTB battery is a battery-vehicle integrated technology that further integrates the battery cover with the vehicle floor. This technology makes the power battery system both an energy source and a structural component of the vehicle body, achieving a high degree of integration between the vehicle body and the battery system.

[0003] Since the strength of the battery pack in the CTB battery box greatly affects the overall vehicle strength, in order to achieve better body strength design, the side beams of the battery pack may be designed to be excessively thick. The side beams of the battery box often need to be equipped with rivet studs to support the high-voltage wiring harness clamps. Due to the excessive thickness of the side beams, the strength of conventional rivet studs after riveting is insufficient.

[0004] To address the aforementioned issues, rivet studs adapted to the thickness of the edge beam could be used. However, due to the varying thicknesses of the edge beams, few rivet studs on the market match these dimensions, and custom molds are prohibitively expensive. Therefore, simply replacing rivet studs with different models is clearly unsuitable. Alternatively, countersinking could be performed on the edge beam to reduce its thickness. However, since countersinking cannot be done on the reverse side of the edge beam, it can only be done on the front. This results in an uneven surface, hindering stable support for the bottom of the high-voltage wiring harness clamp. Therefore, achieving stable installation of the rivet studs without changing their model has become a pressing technical challenge. Utility Model Content

[0005] In view of this, the present invention provides a rivet stud positioning assembly structure for CTB battery box, which aims to provide stable support for high voltage wire harness clamps using conventional rivet studs.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A rivet stud positioning assembly structure for a CTB battery box includes a side beam and a rivet stud. The rivet stud has a threaded portion and a deformable nut located at the lower end of the threaded portion. The upper end of the deformable nut is provided with a support portion. The side beam has a rivet hole penetrating its top. The upper end of the rivet hole has a first countersunk groove and a second countersunk groove arranged sequentially from top to bottom. The deformable nut passes through the lower part of the rivet hole, and the support portion is supported in the second countersunk groove. The threaded portion extends upward out of the rivet hole. An annular washer is fixedly installed in the first countersunk groove, and the upper end of the annular washer is flush with the upper surface of the side beam.

[0008] By adopting the above structure and through the design of the two-stage groove, the thickness of the rivet hole and the deformable nut is reduced, thereby ensuring that the rivet stud of the normal specification can be stably riveted and fixed on the side beam. The annular gasket set in the first groove ensures that the surface of the side beam is flat, which facilitates the stable support of the high-voltage wire harness clamp on the surface of the side beam.

[0009] Preferably, the thickness of the support portion is less than or equal to the depth of the second sink groove. This structure ensures that the bottom of the annular gasket is stably supported within the first sink groove.

[0010] Preferably, the thickness of the annular gasket is the same as the depth of the first sink. This structure ensures that the top of the annular gasket is flush with the top surface of the side beam, thereby guaranteeing that the lower end of the high-voltage wiring harness clamp is stably supported on the side beam.

[0011] Preferably, the annular gasket has a clearance hole in the middle, and the screw portion passes through the clearance hole. This structure facilitates the mounting of the high-voltage wire harness clamp onto the screw portion.

[0012] Preferably, the top of the first settling tank is chamfered, and an annular groove is formed between the chamfer and the annular gasket, the annular groove being filled with welding material. This structure ensures stable installation of the side beam, rivet studs, and annular gasket.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The rivet stud positioning assembly structure for CTB battery boxes provided by this utility model uses a two-stage recessed groove design to reduce the thickness of the rivet hole and the deformable nut, thereby ensuring that the rivet stud of normal specifications is stably riveted and fixed on the side beam. The annular gasket set in the first recessed groove ensures that the surface of the side beam is flat, which facilitates the stable support of the high-voltage wire harness clamp on the surface of the side beam. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the CTB battery box;

[0016] Figure 2 This is a sectional view of the assembly structure;

[0017] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0018] Figure 4 This is a cross-sectional view of the rivet stud 2 after riveting;

[0019] Figure 5 This is a partial sectional view of edge beam 1. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0021] like Figures 1 to 5 As shown, a rivet stud positioning assembly structure for a CTB battery box includes a side beam 1 and a rivet stud 2. The rivet stud 2 has a screw portion 2b and a deformable nut 2a located at the lower end of the screw portion 2b. A support portion 2a1 is formed at the upper end of the deformable nut 2a. A rivet hole 1c is formed on the upper part of the side beam 1, penetrating its top. The upper end of the rivet hole 1c is provided with a first recess 1a and a second recess 1b from top to bottom. The deformable nut 2a passes through the lower part of the rivet hole 1c, and the support portion 2a1 is supported in the second recess 1b. The screw portion 2b extends upward through the rivet hole 1c. An annular washer 3 is fixedly installed in the first recess 1a. The upper end of the annular washer 3 is flush with the upper surface of the side beam 1.

[0022] By setting a secondary groove on the surface of the side beam 1, the thickness of the rivet hole 1c that mates with the deformable nut 2a can be reduced, thereby ensuring that the rivet stud 2 of the standard size is stably riveted and fixed on the side beam 1. The annular gasket 3 set in the first groove 1a ensures that the surface of the side beam 1 is flat, which facilitates the stable support of the high-voltage wire harness clamp on the surface of the side beam 1.

[0023] like Figure 2 and Figure 3 As shown, the screw part 2b is composed of an extension end 2b1 and a mounting end 2b2. The mounting end 2b2 is threaded inside the deformable nut 2a, and the extension end 2b1 protrudes upward beyond the deformable nut 2a and is used to mount the high-voltage wire harness clamp.

[0024] In this embodiment, the thickness of the support portion 2a1 is less than or equal to the depth of the second sink 1b, so that the annular gasket 3 can be stably supported on the bottom surface of the first sink 1a, thereby ensuring the stability of the entire assembly structure.

[0025] In addition, the thickness of the annular gasket 3 is the same as the depth of the first sink 1a. This design allows the top surface of the annular gasket 3 to be flush with the upper surface of the side beam 1, thereby ensuring that after the high-voltage wire harness clamp is fitted onto the protruding end 2b1, the lower end of the high-voltage wire harness clamp can be stably supported on the side beam 1.

[0026] like Figure 3 As shown, a clearance hole 3a is formed in the middle of the annular gasket 3, and the protruding end 2b1 of the screw part 2b passes through the clearance hole 3a. This design ensures that the protruding end 2b1 protrudes upward beyond the top surface of the side beam 1, which facilitates the installation of the high-voltage wire harness clamp.

[0027] like Figures 3 to 5 As shown, the top of the first sink 1a is provided with a chamfer 1a1, and an annular groove is formed between the chamfer 1a1 and the annular gasket 3. The annular groove is filled with welding material to ensure the fixed installation between the side beam 1 and the annular gasket 3, thereby ensuring the stability of the entire assembly structure. In actual use, the four quadrant points of the annular gasket 3 are spot welded for fixation. When the rivet stud 2 needs to be re-riveted, the annular gasket 3 can be removed simply by grinding off the welding material at the four points.

[0028] Since the side beam 1 is a stamped part, the rivet hole 1c is pre-stamped, and the first sinker 1a and the second sinker 1b are both CNC machined.

[0029] In this embodiment, since the rivet position of the rivet stud 2 is moved down, the length of the screw part 2b of the rivet stud 2 selected in this embodiment should be longer, so as to ensure that the high-voltage wire harness clamp is completely fitted on the screw part 2b.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A rivet stud positioning assembly structure for a CTB battery box, comprising a side beam (1) and a rivet stud (2), wherein the rivet stud (2) has a threaded portion (2b) and a deformable nut (2a) located at the lower end of the threaded portion (2b), and the upper end of the deformable nut (2a) is provided with a support portion (2a1), characterized in that: The upper part of the side beam (1) is provided with a rivet hole (1c) that penetrates its top. The upper end of the rivet hole (1c) is provided with a first groove (1a) and a second groove (1b) from top to bottom. The deformable nut (2a) is inserted through the lower part of the rivet hole (1c), and the support part (2a1) is supported in the second groove (1b). The screw part (2b) extends upward through the rivet hole (1c). An annular washer (3) is fixedly installed in the first groove (1a). The upper end of the annular washer (3) is flush with the upper surface of the side beam (1).

2. The rivet stud positioning assembly structure for CTB battery housing according to claim 1, characterized in that: The thickness of the support (2a1) is less than or equal to the depth of the second sink (1b).

3. The rivet stud positioning assembly structure for CTB battery housing according to claim 2, characterized in that: The thickness of the annular gasket (3) is the same as the depth of the first sink (1a).

4. The rivet stud positioning assembly structure for CTB battery housing according to claim 1, characterized in that: The annular gasket (3) has a clearance hole (3a) in the middle, and the screw part (2b) passes through the clearance hole (3a).

5. The rivet stud positioning assembly structure for CTB battery housing according to claim 1, characterized in that: The first settling tank (1a) has a chamfer (1a1) at the top, and an annular groove is formed between the chamfer (1a1) and the annular gasket (3), and the annular groove is used to fill welding material.

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