Anti-fracture rivet nut for sheet metal part

Abstract

The utility model relates to the technical field of rivet nuts, in particular to an anti-fracture rivet nut for a sheet metal part. The anti-fracture rivet nut for the sheet metal part comprises a screw head, a deformation sleeve and an internal thread sleeve, the deformation sleeve is arranged at the bottom of the screw head, the internal thread sleeve is arranged at the bottom of the deformation sleeve, deformation grooves are evenly formed in the outer side wall of the deformation sleeve, and the inner diameter of the deformation sleeve is times that of the internal thread sleeve; the lower half portion of the anti-skid buffering strip deforms along with folding deformation of the deformation sleeve and makes contact with the bottom of the sheet metal part, meanwhile, the fixing teeth can be embedded into the top of the sheet metal part, the anti-skid buffering cushion is attached to the top of the sheet metal part, and the buffering and anti-skid effects can be achieved through mutual cooperation of the anti-skid buffering cushion and the anti-skid buffering strip; and therefore, the probability that the bottom part of the open hole of the sheet metal part is fractured due to overlarge stress is reduced, and the stability of the rivet nut after rivet pulling can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting nuts, in particular to an anti-fracture riveting nut for sheet metal parts. Background Technique

[0002] Riveting nuts have been widely used in the riveting of metal and non-metal flat and non-flat structural parts. Compared with ordinary rivets, the other structural body can be freely disassembled after the riveting nut is riveted, combining the functions of a rivet and a nut, which is convenient for maintenance and updating. Therefore, it has been widely used in the fields of electronics industry, machinery manufacturing, shipbuilding, automotive industry, and aviation.

[0003] For some brittle sheet metal parts, such as carbon fiber plates and glass fiber plates, when using conventional riveting nuts, under the condition of large pre-tightening stress generated during the riveting process, brittle fracture is likely to occur at the opening, damaging the sheet metal parts. In view of the above situation, technical innovation is carried out on the basis of the existing riveting nuts for sheet metal parts. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anti-fracture riveting nut for sheet metal parts to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an anti-fracture riveting nut for sheet metal parts, including:

[0006] A screw head, a deformable sleeve, and an internal thread sleeve. The deformable sleeve is arranged at the bottom of the screw head, the internal thread sleeve is arranged at the bottom of the deformable sleeve. Deformation grooves are evenly arranged on the outer side wall of the deformable sleeve. The inner diameter of the deformable sleeve is [multiple] times the inner diameter of the internal thread sleeve. The screw head, the deformable sleeve, and the internal thread sleeve are integrally formed. Among them: an anti-fracture component is placed outside the deformable sleeve.

[0007] Preferably, the anti-fracture component includes an anti-slip buffer strip and fixed teeth. A group of anti-slip buffer pads are arranged between every two groups of fixed teeth. The anti-slip buffer strip and the anti-slip buffer pads are both made of rubber.

[0008] Preferably, the anti-slip buffer pads are evenly arranged in a circumferential array at the bottom of the screw head, and the fixed teeth are evenly arranged in a circumferential array at the bottom of the screw head.

[0009] Preferably, the anti-slip buffer strip is evenly arranged in a circumferential array on the outer side wall of the deformable sleeve, and the anti-slip buffer strip is staggered from the deformation grooves.

[0010] Preferably, the anti-slip buffer pads correspond to the anti-slip buffer strip, and the fixed teeth correspond to the deformation grooves.

[0011] Preferably, the height of the deformation groove is the same as that of the anti-slip buffer strip, and the lengths of the anti-slip buffer pad and the fixing teeth are the same.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, when riveting, the deformation sleeve is squeezed and folded. At this time, the upper half of the anti-slip buffer strip can increase the friction between the deformation sleeve and the opening of the sheet metal part, thereby improving the installation stability of the riveting nut.

[0014] The lower half of the anti-slip buffer strip deforms as the deformation sleeve folds and contacts the bottom of the sheet metal part. At the same time, the fixing teeth will embed into the top of the sheet metal part, and the anti-slip buffer pad will fit with the top of the sheet metal part. Through the mutual cooperation of the anti-slip buffer pad and the anti-slip buffer strip, the effects of buffering and anti-slip can be achieved, thereby reducing the probability of fracture of the bottom part of the opening of the sheet metal part due to excessive force, and effectively improving the stability of the riveting nut after riveting. Description of the Drawings

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

[0016] Figure 2 is a bottom view of the present utility model;

[0017] Figure 3 is a front sectional view of the present utility model.

[0018] In the figure: 1, screw head; 11, deformation sleeve; 12, internal thread sleeve; 13, deformation groove; 14, anti-slip buffer strip; 15, anti-slip buffer pad; 16, fixing teeth. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3, A fracture-proof rivet nut for sheet metal parts, including a screw head 1, a deformed sleeve 11 and an internal thread sleeve 12. The deformed sleeve 11 is fixedly arranged at the bottom of the screw head 1, and the internal thread sleeve 12 is fixedly arranged at the bottom of the deformed sleeve 11. Deformed grooves 13 are evenly arranged on the outer side wall of the deformed sleeve 11. The inner diameter of the deformed sleeve 11 is 1 times the inner diameter of the internal thread sleeve 12. The screw head 1, the deformed sleeve 11 and the internal thread sleeve 12 are integrally formed. A complete rivet nut is composed of the screw head 1, the deformed sleeve 11 and the internal thread sleeve 12. Among them: An anti-fracture component is placed outside the deformed sleeve 11. The anti-fracture component includes an anti-slip buffer strip 14 and fixing teeth 16. A group of anti-slip buffer pads 15 are fixedly arranged between every two groups of fixing teeth 16. Both the anti-slip buffer strip 14 and the anti-slip buffer pads 15 are made of rubber. The anti-slip buffer pads 15 are fixedly arranged at the bottom of the screw head 1 in a circular array. The fixing teeth 16 are fixedly arranged at the bottom of the screw head 1 in a circular array. The anti-slip buffer strip 14 is fixedly arranged on the outer side wall of the deformed sleeve 11 in a circular array. The anti-slip buffer strip 14 is staggered from the deformed grooves 13. When the rivet nut completes riveting, the deformed sleeve 11 is squeezed and undergoes folding deformation. At this time, the upper half of the anti-slip buffer strip 14 can increase the friction between the deformed sleeve 11 and the opening of the sheet metal part, thereby improving the installation stability of the rivet nut. And the lower half of the anti-slip buffer strip 14 deforms with the folding deformation of the deformed sleeve 11 and contacts the bottom of the sheet metal part. At the same time, the fixing teeth 16 will be embedded into the top of the sheet metal part, and the anti-slip buffer pads 15 will be attached to the top of the sheet metal part. Through the mutual cooperation of the anti-slip buffer pads 15 and the anti-slip buffer strip 14, the effects of buffering and anti-slip can be achieved, thereby reducing the probability of fracture of the bottom part of the opening of the sheet metal part due to excessive force, and effectively improving the stability of the rivet nut after riveting. The anti-slip buffer pads 15 correspond to the anti-slip buffer strip 14, the fixing teeth 16 correspond to the deformed grooves 13, the deformed grooves 13 have the same height as the anti-slip buffer strip 14, and the anti-slip buffer pads 15 and the fixing teeth 16 have the same length.

[0021] Working principle: A complete rivet nut is composed of the screw head 1, the deformed sleeve 11 and the internal thread sleeve 12. When the rivet nut completes riveting, the deformed sleeve 11 is squeezed and undergoes folding deformation. At this time, the upper half of the anti-slip buffer strip 14 can increase the friction between the deformed sleeve 11 and the opening of the sheet metal part, thereby improving the installation stability of the rivet nut. And the lower half of the anti-slip buffer strip 14 deforms with the folding deformation of the deformed sleeve 11 and contacts the bottom of the sheet metal part. At the same time, the fixing teeth 16 will be embedded into the top of the sheet metal part, and the anti-slip buffer pads 15 will be attached to the top of the sheet metal part. Through the mutual cooperation of the anti-slip buffer pads 15 and the anti-slip buffer strip 14, the effects of buffering and anti-slip can be achieved, thereby reducing the probability of fracture of the bottom part of the opening of the sheet metal part due to excessive force, and effectively improving the stability of the rivet nut after riveting.

Claims

1. A fracture-resistant rivet nut for sheet metal, characterized in that: include: A screw head (1), a deformable sleeve (11) and an internally threaded sleeve (12), wherein the deformable sleeve (11) is arranged at the bottom of the screw head (1), and the internally threaded sleeve (12) is arranged at the bottom of the deformable sleeve (11), the outer wall of the deformable sleeve (11) is evenly provided with deformation grooves (13), the inner diameter of the deformable sleeve (11) is 1 times the inner diameter of the internally threaded sleeve (12), and the screw head (1), the deformable sleeve (11) and the internally threaded sleeve (12) are integrally formed, wherein an anti-fracture component is arranged on the outer side of the deformable sleeve (11).

2. The anti-fracture rivet nut for sheet metal according to claim 1, characterized in that: The anti-fracture component comprises an anti-skid buffer strip (14) and fixed teeth (16), a group of anti-skid buffer pads (15) is arranged between every two groups of the fixed teeth (16), and the anti-skid buffer strip (14) and the anti-skid buffer pads (15) are both made of rubber material.

3. The anti-fracture rivet nut for sheet metal according to claim 2, characterized in that: The anti-slip buffer pads (15) are evenly arranged at the bottom of the screw head (1) in a ring array, and the fixing teeth (16) are evenly arranged at the bottom of the screw head (1) in a ring array.

4. The anti-fracture rivet nut for sheet metal according to claim 2, characterized in that: The anti-slip buffer strips (14) are evenly arranged in an annular array on the outer side wall of the deformation sleeve (11), and the anti-slip buffer strips (14) and the deformation grooves (13) are staggered with each other.

5. The anti-fracture rivet nut for sheet metal according to claim 2, characterized in that: The anti-skid buffer pad (15) corresponds to the anti-skid buffer strip (14), and the fixed tooth (16) corresponds to the deformation groove (13).

6. The anti-fracture rivet nut for sheet metal according to claim 2, characterized in that: The deformation groove (13) and the anti-skid buffer strip (14) have the same height, and the anti-skid buffer pad (15) and the fixed tooth (16) have the same length.

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