Multilayer self-plugging rivet

Abstract

The utility model discloses a multilayer self-plugging rivet which structurally comprises a rivet sleeve and a rivet rod, the rivet rod is connected with a first ejector head, the end of the first ejector head is round, the rivet rod and the first ejector head are both inserted into the rivet sleeve, one end of the rivet sleeve is provided with limiting blocks, a first limiting cavity is formed between the limiting blocks, and the first limiting cavity is provided with a second limiting cavity. The shape of the first limiting cavity is matched with the end of the first ejector head, the first limiting cavity is arranged and matched with the first ejector head, so that the first ejector head cannot be exposed outside, the movable block is arranged and can properly move towards the two sides, and therefore the slight fixing effect is achieved; and the second limiting cavity is matched with the first limiting cavity to fix the first ejector head.

Description

Technical Field

[0001] The utility model relates to a multi-layer blind rivet, belonging to the technical field of blind rivets. Background Art

[0002] A blind rivet, also known as a blind fastener, is a fastener that can achieve connection without drilling through the connected parts. It is especially suitable for occasions where only one side can be operated, such as closed structures, sandwich materials or environments with limited space.

[0003] When the existing blind rivets are in use, it is usually necessary to insert the nail rod to the bottom and then pull it back, so that the bottom end of the nail sleeve is deformed to achieve fixation. However, it is not applicable in the case where the nail sleeve is not penetrated, and the top head on the nail rod will remain on the surface after the bottom end of the nail sleeve is deformed. Therefore, in view of the above situation, a multi-layer blind rivet is proposed. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a multi-layer blind rivet to solve the existing problems.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions: A multi-layer blind rivet, the structure of which includes a nail sleeve and a nail rod. A first top head is connected to the nail rod, the end of the first top head is circular, the nail rod and the first top head are both inserted into the nail sleeve. One end of the nail sleeve is provided with a limiting block, and there is a first limiting cavity between the limiting blocks. The shape of the first limiting cavity matches the end of the first top head.

[0006] Furthermore, moving blocks are provided on both sides of the nail sleeve. The two moving blocks can be respectively inserted and slid on both sides of the nail sleeve, and the moving blocks are located below the limiting blocks.

[0007] Furthermore, the moving blocks are trapezoidal in shape and one side of the moving block is in a "丿" shape. The two moving blocks and the inner cavity of the nail sleeve form a second limiting cavity, and the protruding part at one end of the moving block and the first limiting cavity form a semi-circular first limiting cavity.

[0008] Furthermore, an inserting rod is provided on the nail rod. The inner cavity of the nail rod is a cavity and the inserting rod is inserted into the nail rod. A second top head is slidably sleeved on the nail rod, and the inserting rod is connected to the second top head.

[0009] Furthermore, the shape of the top of the second top head matches the second limiting cavity.

[0010] The beneficial effects of the utility model are as follows:

[0011] By providing the first limiting cavity, the cooperation between the first limiting cavity and the first top head makes the first top head not exposed outside.

[0012] By being provided with the moving block, the moving block can be appropriately moved to two sides, thereby playing a slight fixing role, and cooperating with the first limiting cavity to realize the fixing of the first top head;

[0013] By being provided with the second top head, the second top head can fix the moving block, so that the moving block cannot move. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0015] Figure 1 It is a whole structure schematic view of the multi-layer core-pulling rivet of the present application;

[0016] Figure 2 It is a working state structure schematic view of the shank of the multi-layer core-pulling rivet of the present application;

[0017] Figure 3 It is a working state structure schematic view of the shank of the multi-layer core-pulling rivet of the present application;

[0018] Figure 4 It is a moving block position structure schematic view of the multi-layer core-pulling rivet of the present application.

[0019] In the figure: rivet sleeve 1, shank 2, first top head 3, limiting block 4, first limiting cavity 5, moving block 6, second limiting cavity 7, shank 8, second top head 9. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0021] Please refer to Figures 1-4 The present application provides a multi-layer core-pulling rivet technical scheme: its structure includes a rivet sleeve 1 and a shank 2, the shank 2 is connected with a first top head 3, the end of the first top head 3 is circular, the shank 2 and the first top head 3 are inserted into the rivet sleeve 1, one end of the rivet sleeve 1 is provided with a limiting block 4, the limiting block 4 has a first limiting cavity 5 therebetween, the shape of the first limiting cavity 5 matches the end of the first top head 3;

[0022] The two sides of the nail sleeve 1 are also provided with moving blocks 6, the two moving blocks 6 are respectively slidably inserted into the two sides of the nail sleeve 1, the moving blocks 6 are below the limiting blocks 4, the moving blocks 6 are trapezoidal in shape and one side of the moving blocks 6 is in the shape of a "b", the two moving blocks 6 and the inner cavity of the nail sleeve 1 form a second limiting cavity 7, and one end of the moving blocks 6 protrudes and forms a semicircular first limiting cavity 5 with the first limiting cavity 5.

[0023] The nail rod 2 is provided with a plug rod 8, the inner cavity of the nail rod 2 is a hollow cavity, and the plug rod 8 is inserted into the nail rod 2, a second top head 9 is slidably sleeved on the nail rod 2, the plug rod 8 is connected to the second top head 9, and the shape of the top end of the second top head 9 is matched with the second limiting cavity 7.

[0024] For example, in use, the nail sleeve 1 is first inserted into a multi-layer structure, and then the nail rod 2 drives the first top head 3 to be inserted to the bottom, at this time, the first top head 3 will extrude the moving blocks 6 to the two sides, so as to realize the fixation of the side surface under certain conditions, then the first top head 3 enters into the first limiting cavity 5, and the moving blocks 6 are appropriately reset, so that the sharp end of the moving blocks 6 is blocked by the first top head 3, so that the first top head 3 is perfectly clamped in the first limiting cavity 5.

[0025] Then, the second top head 9 is inserted into the second limiting cavity 7 through the plug rod 8, so that the second top head 9 is clamped in the second limiting cavity 7.

[0026] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A multilayer core-pulling rivet, which structure comprises a rivet sleeve (1) and a rivet shank (2), a first top head (3) is connected to the rivet shank (2), the end of the first top head (3) is circular, the rivet shank (2) and the first top head (3) are inserted into the rivet sleeve (1), characterized in that: One end of the nail sleeve (1) is provided with a limiting block (4), and a first limiting cavity (5) is formed between the limiting blocks (4). The shape of the first limiting cavity (5) matches the end of the first top head (3). ​ 2. A multi-layered blind rivet according to claim 1, wherein: Moving blocks (6) are further provided on both sides of the nail sleeve (1). The two moving blocks (6) are respectively slidably inserted into both sides of the nail sleeve (1), and the moving blocks (6) are located below the limiting blocks (4).

3. A multi-layered blind rivet according to claim 2, wherein: The moving block (6) is trapezoidal in shape and one side of the moving block (6) is in the shape of a "丿". The two moving blocks (6) and the inner cavity of the nail sleeve (1) form a second limiting cavity (7), and a convex part at one end of the moving block (6) and the first limiting cavity (5) form a semi-circular first limiting cavity (5).

4. A multi-layered blind rivet according to claim 3, wherein: An insertion rod (8) is provided on the nail rod (2). The inner cavity of the nail rod (2) is a cavity and the insertion rod (8) is inserted into the nail rod (2). A second top head (9) is slidably sleeved on the nail rod (2), and the insertion rod (8) is connected to the second top head (9).

5. A multi-layered blind rivet according to claim 4, wherein: The shape of the top end of the second top head (9) matches the second limiting cavity (7).

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