Anti-loosening rivet body structure

Abstract

The utility model relates to the technical field of anti-loosening rivets, and discloses an anti-loosening rivet body structure which comprises a rivet core, an expansion block is fixedly connected to the bottom end of the outer wall of the rivet core, a rivet cap is fixedly connected to the bottom of the expansion block, a conical head is fixedly connected to the bottom of the rivet cap, and a rivet shell is slidably connected to the outer wall of the rivet core. A plurality of shock pads are fixedly connected to the outer wall of the lower end of the nail shell, a plurality of metal rings are fixedly connected to the outer wall of the nail shell, and a rubber sleeve is fixedly connected to the outer wall of the upper end of the nail shell. According to the utility model, firstly, the rivet penetrates through the riveting piece needing to be connected and the hole reserved in the surface, the rivet core is pulled upwards, the rivet core can be gradually pulled out under the action of pulling force, and meanwhile, the rivet shell can be attached to the surface of the riveting piece under the sliding of the expansion block fixed on the surface of the rivet core and the rivet cap; and the rivet shell on the inner wall of the hole of the riveting piece is tightly fixed in the hole due to expansion, so that the rivet shell is prevented from being loosened.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening rivets, in particular to an anti-loosening rivet body structure. Background Art

[0002] In the field of mechanical manufacturing, rivets are used to connect load-bearing parts. In the frame structure of a car, rivets are used to connect metal components of different shapes and thicknesses to form a stable frame as a whole, transmit power and withstand various stresses during vehicle driving. In the field of electronic and electrical appliances, rivets can be used to fix different parts of the electrical housing, and rivets are used to connect metal housing plates to ensure the sealing and protective performance of the control cabinet.

[0003] When in use, select blind rivets of appropriate specifications according to the thickness, material and riveting strength requirements of the riveted materials, pre-assemble the parts that need to be riveted together, ensure that the parts fit tightly and the rivet holes are aligned, and put the nozzle of the rivet gun on the nail core of the blind rivet to ensure that the nozzle and the nail core are tightly combined. The rivet gun will clamp the nail core through the nozzle and apply tension. Under the action of tension, the nail core will gradually be pulled out, and the jacket of the rivet will expand and deform in the hole, thereby tightly clamping the riveted material.

[0004] During the operation of mechanical equipment, different degrees of vibration will be generated. The reciprocating motion of the engine and the unbalanced force of the rotating parts will cause mechanical vibration. The rivet connection is in this vibration environment and is subjected to periodic external forces for a long time, which will gradually cause a small relative displacement between the rivet and the riveted part, resulting in loose rivets. Loose rivets will cause additional vibration and noise during the operation of the equipment, accelerating the wear of the components on the equipment. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an anti-loosening rivet body structure, which aims to improve the problem in the prior art that loosening occurs after rivet connection, resulting in wear affecting equipment components and falling off of riveted parts.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an anti-loosening rivet body structure includes a nail core, the bottom end of the outer wall of the nail core is fixedly connected to an expansion block, the bottom of the expansion block is fixedly connected to a nail cap, the bottom of the nail cap is fixedly connected to a conical head, the outer wall of the nail core is slidably connected to a nail shell, the inner wall of the nail shell is fitted with the outer wall of the nail core, the lower end outer wall of the nail shell is fixedly connected to a plurality of shock-absorbing pads, the outer wall of the nail shell is fixedly connected to a plurality of metal rings, the upper end outer wall of the nail shell is fixedly connected to a rubber sleeve, the outer walls of the plurality of metal rings penetrate and protrude from the outer wall of the rubber sleeve, and the outer wall of the nail core is provided with an anti-slip mechanism, which is used to prevent the rivet from falling off.

[0007] As a further description of the above technical solution:

[0008] The anti-slip mechanism includes a top block, which is fixedly connected to the outer wall of the nail core, and square cavities are opened on the left and right sides of the inner wall of the top block. The inner wall of the square cavity is fixedly connected to a rotating shaft, and the outer wall of the rotating shaft is rotatably connected to a rotating block. The adjacent sides of the two rotating blocks protrude from the inner wall of the top block, and a resistance block is fixedly connected to the middle of the outer wall of the nail core, and the outer wall of the resistance block fits with the inner wall of the top block.

[0009] As a further description of the above technical solution:

[0010] A plurality of threads are provided on the top of the outer wall of the nail core, and the outer wall of the expansion block is fitted with the inner wall of the nail shell.

[0011] As a further description of the above technical solution:

[0012] The front side of the outer wall of the top block is fixedly connected with a logo base, and the top of the logo base is fixedly connected with a metal logo.

[0013] As a further description of the above technical solution:

[0014] A broken neck groove is provided at the middle of the outer wall of the nail core, and a plurality of strip grooves are provided at the bottom of the inner wall of the nail shell, and the strip grooves penetrate through the outer wall of the nail shell.

[0015] As a further description of the above technical solution:

[0016] A plurality of limiting strips are fixedly connected to the outer wall of the top block, and a plurality of anti-rotation cone blocks are fixedly connected to the bottom of the outer wall of the nail core.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the rubber sleeve is slidably connected with a rivet piece, and the left and right sides of the top of the rivet plate are provided with limiting grooves, and the inner wall of the limiting groove is in contact with the outer wall of the limiting strip.

[0019] As a further description of the above technical solution:

[0020] The top of the nail cap is fixedly connected with a force-bearing block, and the inner wall of the force-bearing block is in contact with the bottom of the outer wall of the expansion block.

[0021] The utility model has the following beneficial effects:

[0022] In the utility model, the rivet is first passed through the hole reserved on the surface of the riveted part to be connected. When the outer wall of the rivet shell fits with the inner wall of the hole, the nail core is pulled upward. Under the action of the pulling force, the nail core will be gradually pulled out. At the same time, due to the sliding of the expansion block fixed on the surface of the nail core and the nail cap, the rivet shell will fit with the surface of the riveted part. The rivet shell on the inner wall of the hole of the rivet part will tightly fix its interior due to expansion, thereby preventing the rivet shell from loosening.

[0023] In the utility model, the rotating block provided on the inner wall of the top block will fit into the bottom of the inner wall of the cavity when there is no external force. When the nail core is pulled out, the rotating block rotates upward, and the resistance block can pass smoothly. When the pulling force stops, if the nail core moves downward, the resistance block will be restricted by the rotating block, so that the nail core cannot move downward, thereby preventing the nail core from falling off due to the influence of external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of the anti-loosening rivet body structure proposed by the present invention;

[0025] Figure 2 This is a partial structural breakdown diagram of the anti-loosening rivet body structure proposed in the utility model;

[0026] Figure 3 This is a cross-sectional view of the anti-loosening rivet body structure proposed by the utility model;

[0027] Figure 4 for Figure 3 A magnified view of point A;

[0028] Figure 5 This is a cross-sectional view of the installation of the anti-loosening rivet body structure proposed by the utility model.

[0029] Legend:

[0030] 1. Nail core; 2. Anti-slip mechanism; 201. Top block; 202. Square cavity; 203. Rotating block; 204. Rotating shaft; 205. Resistance block; 3. Extension block; 4. Nail cap; 5. Nail shell; 6. Shock-absorbing pad; 7. Metal ring; 8. Rubber sleeve; 9. Conical head; 10. Thread; 11. Break neck groove; 12. Identification base; 13. Metal identification; 14. Limiting strip; 15. Anti-rotation cone block; 16. Riveting plate; 17. Limiting groove; 18. Strip groove; 19. Force block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 、 Figure 3 and Figure 5 The utility model provides an embodiment of an anti-loosening rivet body structure, including a nail core 1, the bottom end of the outer wall of the nail core 1 is fixedly connected to an expansion block 3, the outer diameter of the expansion block 3 is larger than the outer wall of the nail core 1; the bottom of the expansion block 3 is fixedly connected to a nail cap 4, the bottom of the nail cap 4 is fixedly connected to a conical head 9, and the bottom end of the nail cap 4 and the conical head 9 are fixed together; the outer wall of the nail core 1 is slidably connected to a nail shell 5, the inner wall of the nail shell 5 is in contact with the outer wall of the nail core 1, and the lower end outer wall of the nail shell 5 is fixedly connected to multiple The shock-absorbing pad 6 is adapted to fit the surface of the rivet when the nail shell 5 is deformed by tension, thereby reducing the shock of the rivet. A plurality of metal rings 7 are fixedly connected to the outer wall of the nail shell 5, and a rubber sleeve 8 is fixedly connected to the outer wall of the upper end of the nail shell 5. The outer walls of the plurality of metal rings 7 penetrate and protrude from the outer wall of the rubber sleeve 8. The metal rings 7 are fixed to the outer wall of the nail shell 5, and the protruding portion is greater than the thickness of the rubber sleeve 8. The outer wall of the nail core 1 is provided with an anti-slip mechanism 2, which is used to prevent the rivet from falling off.

[0033] Specifically, the expansion block 3 is fixed to the outer wall of the nail core 1, and the bottom of the outer wall of the expansion block 3 is slightly larger than the top of its outer wall. The nail cap 4 fixed at the bottom of the expansion block 3 is slightly larger than the bottom outer wall of the expansion block 3. The conical head 9 fixedly connected to the bottom of the nail cap 4 can be directly punched and installed on the surface of the rivet to be riveted when there is no reserved hole and the thickness is relatively thin. When subjected to tension, the nail core 1 can slide on the inner wall of the nail shell 5. The multiple shock-absorbing pads 6 fixed at the bottom of the outer wall of the nail shell 5 fit together with the surface of the rivet when the nail shell 5 is deformed due to tension, thereby playing a shock-absorbing role for the rivet. When the nail shell 5 is deformed due to extrusion, the metal ring 7 can be squeezed with the rubber sleeve 8 to fill the gap between the nail core 1 and the nail shell 5, so that the outer wall of the nail shell 5 and the inner wall of the hole of the rivet are more fitted.

[0034] Reference Figure 2 、 Figure 3 and Figure 4The utility model provides an embodiment of the anti-slip mechanism 2, which includes a top block 201, which is fixedly connected to the outer wall of the nail core 1, and a square cavity 202 is provided on the left and right sides of the inner wall of the top block 201. The square cavity 202 is provided inside the top block 201, and the adjacent sides of the two square cavities 202 pass through the inner wall of the top block 201; the inner wall of the square cavity 202 is fixedly connected to a rotating shaft 204, and the outer wall of the rotating shaft 204 is rotatably connected to a rotating block 203, and the rotating block 203 rotates by relying on the rotating shaft 204; the adjacent sides of the two rotating blocks 203 protrude from the inner wall of the top block 201, and a resistance block 205 is fixedly connected to the middle part of the outer wall of the nail core 1, and the outer wall of the resistance block 205 fits with the inner wall of the top block 201;

[0035] Specifically, a square cavity 202 is provided inside the top block 201, and the rotating block 203 can rotate in a small range inside the square cavity 202 by relying on the rotating shaft 204. The adjacent side of the rotating block 203 protrudes from the inner wall of the top block 201. When the nail core 1 is pulled upward, the resistance block 205 also moves upward. The resistance block 205 can pass smoothly when passing through the rotating block 203. When the resistance block 205 exceeds the position of the rotating block 203 and moves downward, the rotating block 203 fits against the bottom of the inner wall of the square cavity 202 and limits the downward movement of the resistance block 205, preventing the nail core 1 from detaching from the nail shell 5 due to external force.

[0036] Reference Figure 1 、 Figure 2 and Figure 3 The utility model provides an embodiment: a plurality of threads 10 are provided on the top of the outer wall of the nail core 1, and the threads 10 are used to increase friction when pulling the nail core 1; the outer wall of the expansion block 3 is in contact with the inner wall of the nail shell 5, and the front side of the outer wall of the top block 201 is fixedly connected with an identification base 12, and the top of the identification base 12 is fixedly connected with a metal identification 13, and the product attributes of the rivet can be printed on the metal identification 13; a broken neck groove 11 is provided in the middle of the outer wall of the nail core 1, and a plurality of strip grooves 18 are provided on the bottom of the inner wall of the nail shell 5, and the strip grooves 18 pass through the outer wall of the nail shell 5;

[0037] Specifically, the multiple threads 10 opened on the top of the outer wall of the nail core 1 can increase the friction when the nail core 1 is pulled. The outer wall of the expansion block 3 fits with the inner wall of the nail shell 5, so that the nail core 1 expands the nail shell 5 when it moves. The metal logo 13 fixed on the logo base 12 can print the parameters of the rivet on its surface, which is convenient for the staff to select. The broken neck groove 11 is convenient for cutting off the excess part when the rivet is installed. The strip groove 18 facilitates the deformation of the bottom of the nail shell 5, so that the protruding nail shell 5 after deformation can fit the riveting plate 16 more fully.

[0038] Reference Figure 1 、 Figure 2 and Figure 5, an embodiment provided by the present utility model: the outer wall of the top block 201 is fixedly connected with a plurality of limit strips 14, and the bottom of the outer wall of the nail core 1 is fixedly connected with a plurality of anti-rotation cone blocks 15, and the limit strips 14 and the anti-rotation cone blocks 15 can prevent the rivet from rotating after the rivet is installed; the outer wall of the rubber sleeve 8 is slidably connected with a rivet plate 16, and the left and right sides of the top of the rivet plate 16 are provided with limit grooves 17, and the inner wall of the limit groove 17 fits with the outer wall of the limit strip 14, and the top of the nail cap 4 is fixedly connected with a force block 19, which is clamped between the expansion block 3 and the nail cap 4, and plays a force-bearing role in deforming the nail shell 5 when the nail core 1 is pulled; the inner wall of the force block 19 fits with the bottom of the outer wall of the expansion block 3;

[0039] Specifically, the limit strip 14 and the anti-rotation cone block 15 fixed below the top block 201 can prevent the rivet from rotating after the rivet is installed. The inner wall of the limit groove 17 coincides with the outer wall of the limit strip 14. After the installation is completed, observing the fit between the two can facilitate judgment on whether the inside of the rivet is fully fixed. The force block 19 is sandwiched between the expansion block 3 and the nail cap 4, and plays a force-bearing role in deforming the nail shell 5 when the nail core 1 is pulled.

[0040] Working principle: The expansion block 3 is fixed to the outer wall of the nail core 1, and its bottom is slightly larger than the top. The bottom of the nail cap 4 is connected to the conical head 9, which can be directly drilled and installed on the surface of the thin rivet without reserved holes. When the nail core 1 is subjected to tension, it slides on the inner wall of the nail shell 5. When the nail core 1 is deformed by tension, the multiple shock-absorbing pads 6 at the bottom of the outer wall of the nail shell 5 fit with the surface of the rivet to provide shock absorption. When the nail shell 5 is deformed by extrusion, the metal ring 7 and the rubber sleeve 8 squeeze each other, causing the rubber sleeve 8 to fill the gap between the nail core 1 and the nail shell 5, so that the outer wall of the nail shell 5 fits more closely with the inner wall of the hole of the rivet, preventing the rivet from loosening.

[0041] A square cavity 202 is provided inside the top block 201. The rotating block 203 rotates in a small range in the cavity by means of a rotating shaft 204. Its adjacent side protrudes from the inner wall of the top block 201. When the nail core 1 is pulled upward, the resistance block 205 moves upward accordingly and can pass through the rotating block 203 smoothly. When the resistance block 205 exceeds the position of the rotating block 203 and moves downward, the rotating block 203 fits against the bottom of the inner wall of the cavity to limit the downward movement of the resistance block 205, thereby preventing the nail core 1 from separating from the nail shell 5 due to external force.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-loosening rivet body structure, comprising a rivet core (1), characterized in that: The bottom end of the outer wall of the nail core (1) is fixedly connected to an expansion block (3), the bottom of the expansion block (3) is fixedly connected to a nail cap (4), the bottom of the nail cap (4) is fixedly connected to a conical head (9), the outer wall of the nail core (1) is slidably connected to a nail shell (5), the inner wall of the nail shell (5) is fitted with the outer wall of the nail core (1), the lower end outer wall of the nail shell (5) is fixedly connected to a plurality of shock-absorbing pads (6), the outer wall of the nail shell (5) is fixedly connected to a plurality of metal rings (7), the upper end outer wall of the nail shell (5) is fixedly connected to a rubber sleeve (8), the outer walls of the plurality of metal rings (7) penetrate and protrude from the outer wall of the rubber sleeve (8), the outer wall of the nail core (1) is provided with an anti-slip mechanism (2), and the anti-slip mechanism (2) is used to prevent the rivet from falling off.

2. The anti-loosening rivet body structure according to claim 1, characterized in that: The anti-slip mechanism (2) comprises a top block (201), the top block (201) being fixedly connected to the outer wall of the nail core (1), a square cavity (202) being provided on the left and right sides of the inner wall of the top block (201), the inner wall of the square cavity (202) being fixedly connected to a rotating shaft (204), the outer wall of the rotating shaft (204) being rotatably connected to a rotating block (203), the adjacent sides of the two rotating blocks (203) protruding from the inner wall of the top block (201), a resistance block (205) being fixedly connected to the middle of the outer wall of the nail core (1), the outer wall of the resistance block (205) being fitted with the inner wall of the top block (201).

3. The anti-loosening rivet body structure according to claim 1, characterized in that: The top of the outer wall of the nail core (1) is provided with a plurality of threads (10), and the outer wall of the expansion block (3) is fitted with the inner wall of the nail shell (5).

4. The anti-loosening rivet body structure according to claim 2, characterized in that: The front side of the outer wall of the top block (201) is fixedly connected to a marking base (12), and the top of the marking base (12) is fixedly connected to a metal marking (13).

5. The anti-loosening rivet body structure according to claim 1, characterized in that: A broken neck groove (11) is provided in the middle of the outer wall of the nail core (1), and a plurality of strip grooves (18) are provided at the bottom of the inner wall of the nail shell (5), wherein the strip grooves (18) penetrate the outer wall of the nail shell (5).

6. The anti-loosening rivet body structure according to claim 2, characterized in that: The outer wall of the top block (201) is fixedly connected to a plurality of limiting strips (14), and the bottom of the outer wall of the nail core (1) is fixedly connected to a plurality of anti-rotation cone blocks (15).

7. The anti-loosening rivet body structure according to claim 6, characterized in that: The outer wall of the rubber sleeve (8) is slidably connected to a riveted plate (16), and limiting grooves (17) are provided on the left and right sides of the top of the riveted plate (16), and the inner wall of the limiting groove (17) is in contact with the outer wall of the limiting strip (14).

8. The anti-loosening rivet body structure according to claim 1, characterized in that: The top of the nail cap (4) is fixedly connected to a force-bearing block (19), and the inner wall of the force-bearing block (19) is in contact with the bottom of the outer wall of the expansion block (3).

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