Light pressing rivet nut for automobile

Abstract

The utility model relates to the technical field of pressing rivet nuts, in particular to a light pressing rivet nut for an automobile. The light pressing rivet nut for the automobile comprises a pressing rivet nut body, a groove is formed in the bottom of the pressing rivet nut body, a through hole is formed in the bottom of the groove in a penetrating mode, an inner screw head casing pipe is arranged in the groove and the through hole, a limiting ring is arranged on the outer side wall of the inner screw head casing pipe, the limiting ring is arranged in the groove, and the inner screw head casing pipe is arranged in the groove. An annular mounting groove is formed in the bottom of the groove, and an ejection assembly is placed in the annular mounting groove; when threads in the inner screw head sleeve are abraded and need to be replaced, two straight screwdrivers are used for being inserted into two sets of straight grooves correspondingly, a shifting block is shifted outwards, and after the shifting block is separated from a locking groove of a limiting ring, a second spring ejects the limiting ring and the inner screw head sleeve out of a pressing rivet nut body through a pressing ring by means of the elasticity of the second spring. Therefore, the disassembly convenience of the inner screw head sleeve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of press riveting nuts, in particular to a lightweight press riveting nut for automobiles. Background Technique

[0002] The press riveting nut, also called riveting nut and self-locking nut, is a nut applied to thin plates or sheet metals. It has a circular shape and one end is provided with embossed teeth and a guiding groove. Its principle is that the embossed teeth are pressed into the pre-set hole positions of the sheet metal. Generally, the diameter of the pre-set hole is slightly smaller than that of the embossed teeth of the press riveting nut. Through pressure, the embossed teeth of the press riveting nut are squeezed into the plate, causing plastic deformation around the pre-set hole. The deformed material is squeezed into the guiding groove, thus producing a locking effect.

[0003] Chinese Patent with Publication No. CN217926691U discloses a lightweight aluminum alloy press riveting nut for automobiles, which includes a press riveting nut body and a riveting joint provided at one end of the press riveting nut body. It also includes an inner nut. An axially arranged nut sliding cavity adapted to the inner nut is provided in the press riveting nut body, and the nut sliding cavity penetrates through the end of the press riveting nut body far from the riveting joint. The inner nut is slidably arranged in the nut sliding cavity. A threaded hole arranged in the same direction as the nut sliding cavity is provided in the inner nut. A screw hole corresponding to the threaded hole is provided at one end of the press riveting nut body close to the riveting joint. The screw hole is communicated with the nut sliding cavity. A sealing ring cavity is provided between the nut sliding cavity and the screw hole. A sealing ring is provided in the sealing ring cavity. The lower side of the sealing ring extends to the top of the nut sliding cavity. When the threaded hole is damaged or stripped, the inner nut can be directly replaced without replacing the whole press riveting nut, which is more convenient to use and saves costs;

[0004] The above-mentioned prior art solutions have the following defects: The inner nut is fixed in the nut sliding cavity through elastic feet. When replacing the inner nut, it is necessary to pry the elastic feet away from the inner nut. However, after the two are separated, the inner nut still cannot automatically move out of the nut sliding cavity. Therefore, auxiliary tools are needed to pull it out, resulting in inconvenient disassembly of the inner nut. In view of the above situation, technical innovation is carried out on the basis of the existing lightweight press riveting nut for automobiles. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a lightweight press riveting nut for automobiles to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A lightweight press riveting nut for automobiles, comprising:

[0007] A self-clinching nut body, wherein a groove is provided at the bottom of the self-clinching nut body, a through hole is provided through the bottom of the groove, an inner screw head sleeve is provided in the groove and the through hole, a limit ring is provided on the outer side wall of the inner screw head sleeve, the limit ring is provided in the groove, an annular mounting groove is provided at the bottom of the groove, and an ejection assembly is placed in the annular mounting groove, wherein:

[0008] A group of locking grooves are provided on both sides of the limit ring, and a group of installation grooves are provided on both sides of the inner wall of the groove. The installation groove passes through the top of the rivet nut body, a guide hole is provided in the installation groove, and a locking component is placed in the installation groove.

[0009] Preferably, the ejection assembly includes a second spring, a pressure ring is provided on the top of the second spring, the second spring is arranged in the annular mounting groove, and the top of the pressure ring is fitted with the top of the limiting ring.

[0010] Preferably, the locking assembly comprises a shift block, two groups of shift blocks are provided with a group of guide posts on opposite sides thereof, two groups of guide posts are provided with a group of first springs on opposite sides thereof, and a straight groove is provided on the top of the shift block.

[0011] Preferably, the first spring is fixedly disposed in the guide hole, and the guide post is slidably disposed in the guide hole.

[0012] Preferably, the shift block is arranged in the installation groove, and a side of the shift block away from the guide column is inserted into the locking groove of the limiting ring.

[0013] Preferably, the inner screw head sleeve is flush with the top of the limiting ring and the rivet nut body, and the bottom of the inner screw head sleeve is flush with the bottom of the rivet nut body.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] In the utility model, the first spring drives the shift block to be inserted into the locking groove of the limit ring through the guide column by its own resilience, and at this time, the second spring drives the pressure ring to press upward against the limit ring by its own resilience, and the limit ring is pushed against the shift block by the thrust from the second spring, thereby improving the insertion stability of the shift block, so that the inner screw head sleeve and the limit ring can be stably fixed in the main body of the rivet nut, thereby forming a complete rivet nut;

[0016] When the internal threads of the internal screw head sleeve are worn and need to be replaced, use two flat-blade screwdrivers to insert them into the two groups of flat-blade slots respectively, and push the shift block outward. When the shift block is separated from the locking groove of the limit ring, the second spring uses its own elastic force to push the limit ring and the internal screw head sleeve out of the rivet nut body through the pressure ring, thereby improving the convenience of disassembly of the internal screw head sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Structural schematic diagram of a lightweight press riveting nut for an automobile according to the present utility model;

[0018] Figure 2 Front sectional view of a lightweight press riveting nut for an automobile according to the present utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of part A.

[0020] In the figure: 1, press riveting nut body; 11, inner screw head sleeve; 12, limit ring; 13, dial block; 14, slotted groove; 15, guide post; 16, first spring; 17, second spring; 18, pressing ring. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 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.

[0022] Please refer to Figures 1 - 3A lightweight self-clinching nut for automobiles comprises a self-clinching nut body 1, a groove is provided at the bottom of the self-clinching nut body 1, a through hole is provided through the bottom of the groove, an inner screw head sleeve 11 is slidably provided in the groove and the through hole, a limiting ring 12 is fixedly provided on the outer wall of the inner screw head sleeve 11, the limiting ring 12 is slidably provided in the groove, an annular mounting groove is provided at the bottom of the groove, an ejection assembly is placed in the annular mounting groove, a group of locking grooves are provided on the left and right sides of the limiting ring 12, a group of mounting grooves are provided on the inner side wall of the groove, the mounting grooves penetrate the top of the self-clinching nut body 1, and the mounting assembly is fixedly provided on the outer wall of the inner screw head sleeve 11, and the limiting ring 12 is slidably provided in the groove. A guide hole is provided in the mounting groove, a locking assembly is placed in the mounting groove, the ejection assembly includes a second spring 17, a pressure ring 18 is fixedly provided on the top of the second spring 17, the second spring 17 is fixedly provided in the annular mounting groove, the top of the pressure ring 18 is fitted with the top of the limit ring 12, the locking assembly includes a shift block 13, a group of guide columns 15 are fixedly provided on the opposite sides of the two groups of shift blocks 13, a group of first springs 16 are fixedly provided on the opposite sides of the two groups of guide columns 15, a slot 14 is provided on the top of the shift block 13, the first spring 16 is fixedly provided in the guide hole, and the guide column 15 is slidably provided on the In the guide hole, the shift block 13 is slidably arranged in the installation groove, and the side of the shift block 13 away from the guide column 15 is inserted into the locking groove of the limit ring 12. The first spring 16 uses its own resilience to drive the shift block 13 to be inserted into the locking groove of the limit ring 12 through the guide column 15. At this time, the second spring 17 uses its own resilience to drive the pressure ring 18 to push the limit ring 12 upward. The limit ring 12 is pushed by the second spring 17 to resist the shift block 13, thereby improving the insertion stability of the shift block 13, so that the inner screw head sleeve 11 and the limit ring 12 can be stably fixed in the rivet nut body 1, thereby forming a complete The inner screw head sleeve 11 is flush with the top of the limit ring 12 and the self-clinching nut body 1, and the bottom of the inner screw head sleeve 11 is flush with the bottom of the self-clinching nut body 1. When the internal thread of the inner screw head sleeve 11 is worn and needs to be replaced, two slotted screwdrivers are used to insert them into the two groups of slotted grooves 14 respectively, and the shifting blocks 13 are pushed outward. When the shifting blocks 13 are separated from the locking grooves of the limit ring 12, the second spring 17 uses its own elastic force to push the limit ring 12 and the inner screw head sleeve 11 out of the self-clinching nut body 1 through the pressure ring 18, thereby improving the convenience of disassembly of the inner screw head sleeve 11.

[0023] Working principle: The first spring 16 uses its own resilience to drive the block 13 through the guide post 15 to insert into the locking groove of the limit ring 12. At this time, the second spring 17 uses its own resilience to drive the pressing ring 18 to press upward against the limit ring 12. The limit ring 12 will resist the block 13 under the thrust from the second spring 17, thereby improving the insertion stability of the block 13, so that the internal screw head sleeve 11 and the limit ring 12 can be stably fixed in the blind rivet nut body 1, thus forming a complete blind rivet nut. When the internal thread of the internal screw head sleeve 11 is worn and needs to be replaced, two flat-blade screwdrivers are respectively inserted into the two groups of flat slots 14 and the block 13 is toggled outwards. When the block 13 is separated from the locking groove of the limit ring 12, the second spring 17 uses its own elasticity to eject the limit ring 12 and the internal screw head sleeve 11 from the blind rivet nut body 1 through the pressing ring 18, thereby improving the disassembly convenience of the internal screw head sleeve 11.

Claims

1. A lightweight self-clinching nut for automobiles, characterized in that: include: A self-clinching nut body (1), wherein a groove is provided at the bottom of the self-clinching nut body (1), a through hole is provided through the bottom of the groove, an inner screw head sleeve (11) is provided in the groove and the through hole, a limit ring (12) is provided on the outer side wall of the inner screw head sleeve (11), the limit ring (12) is arranged in the groove, an annular installation groove is provided at the bottom of the groove, and an ejection assembly is placed in the annular installation groove, wherein: A group of locking grooves are provided on both the left and right sides of the limiting ring (12), and a group of mounting grooves are provided on both the left and right sides of the inner side wall of the groove, the mounting grooves penetrate the top of the rivet nut body (1), a guide hole is provided in the mounting groove, and a locking component is placed in the mounting groove.

2. The lightweight self-clinching nut for automobiles according to claim 1, characterized in that: The ejection assembly comprises a second spring (17), a pressure ring (18) is arranged on the top of the second spring (17), the second spring (17) is arranged in an annular mounting groove, and the top of the pressure ring (18) is in contact with the top of the limiting ring (12).

3. The lightweight self-clinching nut for automobiles according to claim 1, characterized in that: The locking assembly comprises a shift block (13), two groups of shift blocks (13) are provided with a group of guide columns (15) on opposite sides thereof, two groups of guide columns (15) are provided with a group of first springs (16) on opposite sides thereof, and a straight groove (14) is provided on the top of the shift block (13).

4. The lightweight self-clinching nut for automobiles according to claim 3, characterized in that: The first spring (16) is fixedly arranged in the guide hole, and the guide column (15) is slidably arranged in the guide hole.

5. The lightweight self-clinching nut for automobiles according to claim 3, characterized in that: The shift block (13) is arranged in the installation groove, and the side of the shift block (13) away from the guide column (15) is inserted into the locking groove of the limiting ring (12).

6. The lightweight self-clinching nut for automobiles according to claim 1, characterized in that: The inner screw head sleeve (11) is flush with the limiting ring (12) and the top of the rivet nut body (1), and the bottom of the inner screw head sleeve (11) is flush with the bottom of the rivet nut body (1).

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