Closed round head pull rivet

Abstract

The utility model relates to the technical field of rivets, specifically a closed round head evacuation rivet, comprising a rivet body and a sealing assembly, wherein the sealing assembly is arranged on the side surface of the rivet body, the sealing assembly comprises a sealing sleeve, the sealing sleeve is sleeved on the side surface of the rivet body, one side of the inner wall of the sealing sleeve is fixedly connected with a telescopic rod, the side surface of the telescopic rod is sleeved with a spring, and one side of the telescopic rod is fixedly connected with a limiting hemisphere. The closed round head evacuation rivet, by installing the sealing assembly, the staff first sleeves the sealing sleeve on the outside of the rivet body, when the limiting hemisphere contacts the rivet body, the limiting hemisphere will squeeze the telescopic rod and the spring inward, causing the telescopic rod and the spring to deform, when the limiting hemisphere enters the limiting hole, the telescopic rod and the spring are no longer squeezed and bounced up, and the sealing sleeve is fixed on the outside of the rivet body, thereby improving the sealing performance of the device, reducing the change in the sealing performance of the closed round head evacuation rivet under extreme weather, and preventing tiny leakage at the connection.

Description

Technical Field

[0001] The utility model relates to the technical field of rivets, in particular to a closed round-head evacuated rivet. Background Art

[0002] Closed round head pull rivet is a kind of pull rivet with special structure. It is suitable for riveting occasions that require higher load and certain sealing performance. The riveting operation of this rivet is similar to that of ordinary blind rivets, except that after the riveting is completed, the head of the rivet will form a closed round head. The advantage of this design is that it can provide higher bearing capacity and at the same time protect the riveted surface to avoid direct exposure of the rivet head. Closed round head pull rivet is widely used in automobiles, ships, railways, aerospace, mechanical equipment and other fields, especially in some key parts that require higher bearing capacity and sealing, such as engine hoods, doors, hull structures, etc.

[0003] Existing closed round head evacuation rivets are used to connect two fixings. However, in extreme weather conditions, the sealing performance of the closed round head evacuation rivets will decrease, resulting in tiny leaks at the connection. Utility Model Content

[0004] The purpose of the present invention is to provide a closed round head evacuation rivet to solve the problem that the sealing performance of the closed round head evacuation rivet may decrease in extreme weather conditions as mentioned in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a closed round head evacuation rivet, comprising a rivet body and a sealing assembly, wherein the sealing assembly is arranged on the side surface of the rivet body, the sealing assembly comprises a sealing sleeve, the sealing sleeve is sleeved on the side surface of the rivet body, a telescopic rod is fixedly connected to one side of the inner wall of the sealing sleeve, a spring is sleeved on the side surface of the telescopic rod, a limiting hemisphere is fixedly connected to one side of the telescopic rod, and a limiting hole is provided on the side surface of the rivet body.

[0005] Further preferably, a first through hole is opened inside the nail body, a nail cap is fixedly connected to the bottom of the nail body, and a second through hole is opened inside the nail cap.

[0006] Further preferably, a nail core is movably connected inside the second through hole, a connecting rod is fixedly connected to the top of the nail core, a V-shaped extrusion head is fixedly connected to the top of the connecting rod, and a groove is provided on the inner wall of the nail body. The staff puts the nail body into the connecting hole, uses a nail gun to suck the nail core, and then presses the trigger on the nail gun. The nail core moves downward under the action of the nail gun, and the connecting rod is driven downward at the same time. The connecting rod drives the V-shaped extrusion head to extrude the inner wall of the nail body, causing it to deform. As the diameter of the nail body increases, the nail body abuts against the upper part of the fixing part, thereby ensuring the firmness of the riveting.

[0007] Further preferably, the through hole one is connected to the through hole two, and the telescopic rod and the spring are symmetrically distributed.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] In the utility model, by installing the sealing component, the staff first sleeves the sealing sleeve on the outside of the nail body. When the limiting hemisphere contacts the nail body, the limiting hemisphere will squeeze the telescopic rod and the spring inward, causing the telescopic rod and the spring to deform. When the limiting hemisphere enters the limiting hole, the telescopic rod and the spring are no longer squeezed and bounce up, and the sealing sleeve is fixed to the outside of the nail body, thereby improving the sealing performance of the device, reducing the change in the sealing performance of the closed round head pull-out rivet under extreme weather conditions, and preventing tiny leaks at the connection.

[0010] In the utility model, the staff puts the nail body into the connecting hole, uses the nail gun to absorb the nail core, and then presses the trigger on the nail gun. The nail core moves downward under the force of the nail gun, and the nail core drives the connecting rod downward. The connecting rod drives the V-shaped extrusion head to squeeze the inner wall of the nail body to cause it to deform. As the diameter of the nail body increases, the nail body abuts against the upper part of the fixing piece, ensuring the firmness of the riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the three-dimensional unfolded structure of the utility model;

[0013] Figure 3 This is an enlarged structural diagram of the sealing sleeve of the utility model;

[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0016] In the figure: 1. nail body; 2. sealing assembly; 201. sealing sleeve; 202. telescopic rod; 203. spring; 204. limiting hemisphere; 205. limiting hole; 3. through hole 1; 4. nail cap; 5. through hole 2; 6. nail core; 7. connecting rod; 8. V-shaped extrusion head; 9. groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 5 The utility model provides a technical solution: a closed round head evacuation rivet, comprising a rivet body 1 and a sealing assembly 2, the sealing assembly 2 is arranged on the side surface of the rivet body 1, the sealing assembly 2 comprises a sealing sleeve 201, the sealing sleeve 201 is sleeved on the side surface of the rivet body 1, one side of the inner wall of the sealing sleeve 201 is fixedly connected with a telescopic rod 202, the side surface of the telescopic rod 202 is sleeved with a spring 203, one side of the telescopic rod 202 is fixedly connected with a limiting hemisphere 204, and a limiting hole 205 is provided on the side surface of the rivet body 1.

[0019] In this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, a through hole 1 3 is formed inside the nail body 1 , a nail cap 4 is fixedly connected to the bottom of the nail body 1 , and a through hole 2 5 is formed inside the nail cap 4 .

[0020] In this embodiment, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a nail core 6 is movably connected inside the through hole 2 5, a connecting rod 7 is fixedly connected to the top of the nail core 6, a V-shaped extrusion head 8 is fixedly connected to the top of the connecting rod 7, and a groove 9 is provided on the inner wall of the nail body 1. Then the staff puts the nail body 1 into the connecting hole, uses a nail gun to suck the nail core 6, and then presses the trigger on the nail gun. The nail core 6 moves downward under the action of the nail gun, and the nail core 6 will drive the connecting rod 7 downward at the same time. The connecting rod 7 will drive the V-shaped extrusion head 8 to squeeze the inner wall of the nail body 1 to cause it to deform. As the diameter of the nail body 1 increases, the nail body 1 abuts against the upper part of the fixing piece, thereby ensuring the firmness of the riveting.

[0021] In this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, the through hole 1 3 is connected to the through hole 2 5 , and the telescopic rod 202 and the spring 203 are symmetrically distributed.

[0022] The use method and advantages of the utility model: When the closed round head evacuation rivet is used, the working process is as follows:

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when the device is in use, the staff first sleeves the sealing sleeve 201 on the outer side of the nail body 1. When the limiting hemisphere 204 contacts the nail body 1, the limiting hemisphere 204 will squeeze the telescopic rod 202 and the spring 203 inward, causing the telescopic rod 202 and the spring 203 to deform. When the limiting hemisphere 204 enters the limiting hole 205, the telescopic rod 202 and the spring 203 are no longer squeezed and bounce up, fixing the sealing sleeve 201 on the outer side of the nail body 1. Then the staff puts the nail body 1 into the connecting hole, uses a nail gun to suck the nail core 6, and then presses the trigger on the nail gun. The nail core 6 moves downward under the force of the nail gun, and the nail core 6 moves downward while driving the connecting rod 7. The connecting rod 7 drives the V-shaped extrusion head 8 to squeeze the inner wall of the nail body 1, causing it to deform. As the diameter of the nail body 1 increases, the nail body 1 abuts against the upper part of the fixing piece, ensuring the firmness of the riveting.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A closed round head evacuation rivet, comprising a rivet body (1) and a sealing assembly (2), characterized in that: The sealing assembly (2) is arranged on the side surface of the nail body (1), and the sealing assembly (2) comprises a sealing sleeve (201), the sealing sleeve (201) is sleeved on the side surface of the nail body (1), one side of the inner wall of the sealing sleeve (201) is fixedly connected to a telescopic rod (202), the side surface of the telescopic rod (202) is sleeved with a spring (203), one side of the telescopic rod (202) is fixedly connected to a limiting hemisphere (204), and the side surface of the nail body (1) is provided with a limiting hole (205).

2. The closed round head evacuated rivet according to claim 1, characterized in that: A first through hole (3) is provided inside the nail body (1), a nail cap (4) is fixedly connected to the bottom of the nail body (1), and a second through hole (5) is provided inside the nail cap (4).

3. The closed round head evacuated rivet according to claim 2, characterized in that: A nail core (6) is movably connected inside the second through hole (5), a connecting rod (7) is fixedly connected to the top of the nail core (6), a V-shaped extrusion head (8) is fixedly connected to the top of the connecting rod (7), and a groove (9) is provided on the inner wall of the nail body (1).

4. The closed round head evacuated rivet according to claim 2, characterized in that: The through hole one (3) is connected to the through hole two (5), and the telescopic rod (202) and the spring (203) are symmetrically distributed.

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