Expansion rivet

Abstract

The utility model provides an expansion rivet, which belongs to the technical field of expansion rivets and comprises a rivet, a locking component and an anti-falling component. A sleeve is arranged outside the rivet, and a rivet head is mounted at one end of the rivet; the bottom of the sleeve is connected with the deformation sleeve, the deformation sleeve is made of aluminum materials and is easy to deform, a plurality of weakening grooves are formed in the surface of the deformation sleeve, the structural strength of the deformation grooves is reduced due to the weakening grooves, the deformation grooves are easy to gather and contract under the stress effect, and the mounting grooves are formed in the bottom end of the deformation sleeve, so that the deformation sleeve is more convenient to mount and demount. The pushing block installed on the surface of the rivet is embedded in the installation groove, during installation, the rivet is stressed to pull and drive the pushing block, the pushing block pushes the deformation sleeve to be stressed to enable the deformation sleeve to deform, meanwhile, the rivet and the sleeve are tensioned to be stressed, and it is guaranteed that the rivet and the sleeve are locked and fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of expansion rivets, in particular to an expansion rivet. BACKGROUND

[0002] Rivets are used to connect two parts with holes in them, one end with a cap. In riveting, the use of its own deformation or interference connects the riveted parts. There are many types of rivets, the commonly used ones are R-type rivets, fan-shaped rivets, core-pulling rivets, tree-shaped rivets, half-round heads, flat heads, half-hollow rivets, solid rivets, countersunk rivets, core-pulling rivets and hollow rivets, etc. These are usually used to connect the riveted parts by deforming themselves. The existing rivets generally include a shank and a head. When in use, first, a mounting hole is drilled with a drilling tool, then a pull rivet is placed in the mounting hole, and finally a pull rivet gun is used to act on the pull rivet to deform the pull rivet, so that the deformed and expanded pull rivet forms a disc-shaped or cylindrical clamping post that is clamped in the mounting hole, thus completing the pull rivet connection. The rivet with the above structure can only pull two workpieces together, but the riveting force decreases over time, which causes loosening and affects use. SUMMARY

[0003] The utility model discloses a kind of expansion rivets, to solve the problem that the rivet with the above structure proposed in the above background art can only pull two workpieces together, but the riveting force decreases over time, which causes loosening and affects use.

[0004] To achieve the above object, the utility model provides the following technical scheme: an expansion rivet, including rivet, locking assembly and anti-drop assembly;

[0005] Among them: the outside of rivet is equipped with sleeve, one end of the rivet is installed with rivet head;

[0006] Locking assembly includes the deformation sleeve connected in the bottom of sleeve, the surface of the deformation sleeve is equipped with a plurality of weakening grooves, the bottom end inside of the deformation sleeve is equipped with installation groove, the surface of the rivet is fixedly installed with push block, the push block is embedded in the inside of installation groove;

[0007] Anti-drop assembly includes the connecting sleeve installed in the bottom end of deformation sleeve, the inner wall of the connecting sleeve is equipped with multiple anti-drop grooves, the bottom of the rivet is fixedly installed with anti-drop block, the surface of the anti-drop block is equipped with conical part, the anti-drop block is inserted in the inside of anti-drop groove.

[0008] As a preferred scheme of the utility model: the surface of sleeve is equipped with rubber ring, the surface of the rubber ring is equipped with anti-skid groove.

[0009] As one preferred scheme of the utility model, a plurality of rectangular grooves are formed around the surface of the connecting sleeve, and one end of the rectangular groove extends to the edge of the connecting sleeve.

[0010] As one preferred scheme of the utility model, the deformation sleeve is made of aluminum material.

[0011] As one preferred scheme of the utility model, the rivet and the sleeve surface are both subjected to hot galvanizing treatment.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] (1) the deformation sleeve is connected to the bottom of the sleeve, is made of aluminum material, is easy to deform, has a plurality of weakening grooves formed on the surface, the weakening grooves reduce the structural strength of the deformation sleeve, so that the deformation sleeve is more easily shrunk under stress, the bottom end of the deformation sleeve is internally provided with a mounting groove, the pushing block mounted on the surface of the rivet is embedded in the mounting groove, when the rivet is pulled under stress, the pushing block is driven to push the deformation sleeve under stress, so that the deformation sleeve is deformed, and the rivet and the sleeve are pulled under stress, thereby ensuring that the two are locked and fixed;

[0014] (2) the bottom end of the deformation sleeve is connected to the connecting sleeve, the inner wall of the connecting sleeve is provided with a plurality of anti-disengagement grooves, and the bottom of the rivet is provided with an anti-disengagement block, when the rivet is pulled under stress, the anti-disengagement block is driven to move. The anti-disengagement block moves to contact the bottom of the connecting sleeve through the tapered portion on the surface, the connecting sleeve is expanded through the tapered portion, so that the anti-disengagement block enters the anti-disengagement groove in the connecting sleeve, and the anti-disengagement block is limited through the anti-disengagement groove, thereby avoiding loosening caused by the reduction of the riveting force of the rivet. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic view of the utility model;

[0016] Figure 2 It is the cross section structure schematic view of the utility model;

[0017] Figure 3 It is the locking assembly structure schematic view of the utility model;

[0018] Figure 4 It is the anti-disengagement assembly structure schematic view of the utility model.

[0019] In the drawing: 1, rivet; 2, sleeve; 3, head; 4, locking assembly; 41, deformation sleeve; 42, weakening groove; 43, mounting groove; 44, pushing block; 5, anti-disengagement assembly; 51, connecting sleeve; 52, anti-disengagement groove; 53, anti-disengagement block; 54, tapered portion; 6, rubber ring; 7, anti-skid groove; 8, rectangular groove. DETAILED DESCRIPTION

[0020] In order to make the purposes, technical schemes and advantages of the embodiments of the present application clearer, the technical schemes of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0021] Please refer to Figures 1-4 , an expansion rivet, comprising: a rivet 1, a locking assembly 4 and an anti-off assembly 5; the outside of the rivet 1 is provided with a sleeve 2, and the rivet 1 is provided with a rivet head 3 at one end;

[0022] Please refer to Figure 1 , Figure 3 , the locking assembly 4 comprises a deformation sleeve 41 connected to the bottom of the sleeve 2, a plurality of weakening grooves 42 are formed in the surface of the deformation sleeve 41, an installation groove 43 is formed in the bottom end of the deformation sleeve 41, a push block 44 is fixedly installed on the surface of the rivet 1, the push block 44 is embedded in the installation groove 43, and the deformation sleeve 41 is made of aluminum.

[0023] In specific use, the bottom of the sleeve 2 is connected with the deformation sleeve 41, the deformation sleeve 41 is made of aluminum and is easy to deform, a plurality of weakening grooves 42 are formed in the surface of the deformation sleeve 41, the weakening grooves 42 are formed to reduce the structural strength of the deformation sleeve 41, so that the deformation sleeve 41 is more easily gathered and shrunk under stress, an installation groove 43 is formed in the bottom end of the deformation sleeve 41, and the push block 44 installed on the surface of the rivet 1 is embedded in the installation groove 43; when installed, the rivet 1 is stressed to drive the push block 44, the push block 44 pushes the deformation sleeve 41 to be stressed to deform the deformation sleeve 41, and the rivet 1 and the sleeve 2 are tightly stressed to be locked and fixed.

[0024] Please refer to Figure 1 , Figure 4 , the anti-off assembly 5 comprises a connecting sleeve 51 installed at the bottom end of the deformation sleeve 41, a plurality of anti-off grooves 52 are formed in the inner wall of the connecting sleeve 51, an anti-off block 53 is fixedly installed at the bottom of the rivet 1, a tapered portion 54 is formed in the surface of the anti-off block 53, and the anti-off block 53 is inserted into the anti-off groove 52.

[0025] Specific use: the bottom end of the deformation sleeve 41 is connected with a connecting sleeve 51, the inner wall of the connecting sleeve 51 is provided with a plurality of anti-disengagement grooves 52, the rivet 1 is provided with an anti-disengagement block 53 at the bottom, and the anti-disengagement block 53 is driven to move when the rivet 1 is tensioned. The anti-disengagement block 53 moves through the tapered portion 54 on the surface and contacts the bottom of the connecting sleeve 51, the connecting sleeve 51 is expanded through the tapered portion 54, so that the anti-disengagement block 53 enters the anti-disengagement groove 52 in the connecting sleeve 51, and the anti-disengagement groove 52 limits the anti-disengagement block 53, so that the riveting force of the rivet 1 is reduced to avoid loosening.

[0026] Please refer to Figure 3 The surface of the sleeve 2 is provided with a rubber ring 6, and the surface of the rubber ring 6 is provided with an anti-skid groove 7.

[0027] Specific use: the surface of the sleeve 2 is provided with a rubber ring 6, and the surface of the rubber ring 6 is provided with an anti-skid groove 7, the rubber ring 6 is extruded when the rivet 1 and the sleeve 2 are tightly connected, the rubber ring 6 is between the sleeve 2 and the deformation sleeve 41, the tightness between the two is increased through the anti-skid groove 7 on the surface, and the rubber ring 6 has a certain buffer, so that the rivet 1 is prevented from being pulled apart from the sleeve 2.

[0028] Please refer to Figure 4 A plurality of rectangular grooves 8 are arranged around the surface of the connecting sleeve 51, and one end of the rectangular groove 8 extends to the edge of the connecting sleeve 51.

[0029] Specific use: the surface of the connecting sleeve 51 is provided with the rectangular groove 8, the rectangular groove 8 extends to the edge of the connecting sleeve 51, when the tapered portion 54 contacts the connecting sleeve 51, the rectangular groove 8 can provide a deformation displacement for the expansion of the connecting sleeve 51, and the connecting sleeve 51 is made of a good elastic metal material and can reset after deformation, the connecting sleeve 51 resets after the anti-disengagement block 53 is inserted into the anti-disengagement groove 52, and the anti-disengagement block 53 is limited.

[0030] Please refer to Figure 2 The surfaces of the rivet 1 and the sleeve 2 are subjected to hot galvanizing treatment.

[0031] Specific use: the surfaces of the rivet 1 and the sleeve 2 are subjected to hot galvanizing treatment, so that they have good oxidation resistance and improve the service life.

[0032] A deformation sleeve 41 is connected to the bottom of the sleeve 2, the deformation sleeve 41 is made of aluminum material and is easy to deform, a plurality of weakening grooves 42 are arranged on the surface of the deformation sleeve 41, the weakening grooves 42 are arranged to reduce the structural strength of the deformation sleeve 41, so that the deformation sleeve 41 is more easily gathered and shrunk under stress, an installation groove 43 is arranged in the bottom end of the deformation sleeve 41, a pushing block 44 arranged on the surface of the rivet 1 is embedded in the installation groove 43, when installed, the rivet 1 is pulled to drive the pushing block 44, the pushing block 44 pushes the deformation sleeve 41 to deform under stress, at the same time, the rivet 1 and the sleeve 2 are pulled to bear stress, so as to lock and fix them, when the rivet 1 is pulled to bear stress, the anti-disengagement block 53 is driven to move.

[0033] The contents not described in detail in the description belong to the prior art known to those skilled in the art, although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. An expansion rivet, characterized by, Include: rivet (1), the outer part of rivet (1) is provided with sleeve (2), one end of rivet (1) is provided with rivet head (3); Locking assembly (4) includes deformation sleeve (41) connected at the bottom of sleeve (2), the surface of deformation sleeve (41) is provided with a plurality of weakening grooves (42), the bottom end of deformation sleeve (41) is provided with installation groove (43) inside, the surface of rivet (1) is fixedly provided with push block (44), push block (44) is embedded in installation groove (43) inside; Anti-off assembly (5) includes connecting sleeve (51) installed at the bottom of deformation sleeve (41), the inner wall of connecting sleeve (51) is provided with a plurality of anti-off grooves (52), the bottom of rivet (1) is fixedly provided with anti-off block (53), the surface of anti-off block (53) is provided with tapered portion (54), anti-off block (53) is inserted in anti-off groove (52) inside.

2. An expansion rivet according to claim 1, wherein: The surface of sleeve (2) is provided with rubber ring (6), the surface of rubber ring (6) is provided with anti-skid groove (7).

3. An expansion rivet according to claim 1, wherein: The surface of connecting sleeve (51) is surrounded by a plurality of rectangular grooves (8), one end of rectangular groove (8) extends to the edge of connecting sleeve (51).

4. An expansion rivet according to claim 1, wherein: The deformation sleeve (41) is made of aluminum material.

5. An expansion rivet according to claim 1, wherein: The surface of rivet (1) and sleeve (2) is treated by hot galvanizing.

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