Closed drum-shaped self-plugging rivet

Abstract

The utility model discloses a closed type drum-shaped self-plugging rivet which comprises a rivet body, a first pressing groove is formed in the outer side of the rivet body, the interior of the rivet body is fixedly connected with a fixing ring, the upper surface of the fixing ring is fixedly connected with a buffering gasket, the top of the rivet body is fixedly connected with a cover plate, the bottom face of the cover plate is fixedly connected with a buffering layer, and the bottom of the rivet body is fixedly connected with a rivet cap. A rivet core is arranged in the rivet body, the top of the rivet core is fixedly connected with a rivet head, a plurality of clamping grooves are formed in the outer side of the rivet core, the outer side of the rivet core is fixedly connected with a rubber layer and a limiting ring, and the upper surface of a rivet cap is fixedly connected with a deformation pipe. The sealing performance is effectively enhanced and the waterproof effect is improved through the cooperation of the rivet body, the cover plate, the rubber layer and the rivet cap, the rivet core is limited and fixed through the cooperation of the clamping teeth and the clamping grooves, the situation that the rivet head and the lamp wick are loosened due to vibration is avoided, the anti-pressure ability of the rivet is further enhanced, and the applicability of the rivet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rivets, in particular to a closed drum-type blind rivet. Background Art

[0002] Rivets are parts that connect riveted parts by using their own deformation or interference. Rivets are divided into fan rivets, solid rivets, and core-pulling rivets. Among them, drum-type core-pulling rivets are a kind of riveted metal fasteners with a unique structure. They are new fasteners with high-strength nail core retention and high resistance to force and shear, so they are widely used.

[0003] The rivet body and the nail body in the existing drum-type blind rivets are separate. During the riveting process, the nail body needs to be inserted into the rivet body, and then the nail body is pulled by a rivet gun to deform and connect the rivet body. This will cause a gap between the rivet body and the nail body, that is, it is open, so the waterproof performance and sealing performance are poor, resulting in limitations in use. In addition, the drum-type blind rivet only relies on the nail body to be embedded in the rivet body for fixation, which makes the rivet connection easy to loosen due to vibration during connection, affecting the connection effect. Utility Model Content

[0004] The utility model aims to provide a closed drum-type blind rivet to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed drum-type core-pulling rivet, comprising a rivet body, a first pressing groove is provided on the outer side of the rivet body, the interior of the rivet body is fixedly connected to a fixing ring, the upper surface of the fixing ring is fixedly connected to a buffer gasket, the top of the rivet body is fixedly connected to a cover plate, the bottom surface of the cover plate is fixedly connected to a buffer layer, the bottom of the rivet body is fixedly connected to a rivet cap, a nail core is provided inside the rivet body, the top of the nail core is fixedly connected to a nail head, a plurality of slots are provided on the outer side of the nail core, the outer side of the nail core is fixedly connected to a rubber layer, the outer side of the nail core is fixedly connected to a limiting ring, the upper surface of the rivet cap is fixedly connected to a deformation tube, the side surface of the deformation tube is fixedly connected to a plurality of teeth, a second pressing groove is provided on the side surface of the deformation tube, and a workpiece is provided on the upper surface of the rivet cap.

[0006] Preferably, the buffer gasket and the buffer layer are both made of rubber material, and the nail head is located between the buffer gasket and the buffer layer.

[0007] Preferably, a conical through hole is provided at the center of the rivet cap, and the conical through hole is larger at the top and smaller at the bottom. The rubber layer extends obliquely downward from the edge to the center, and the rubber layer is movably plugged into the rivet cap.

[0008] Preferably, the locking groove is engaged with the locking tooth, and the number of the second pressing grooves is two and they are respectively located at the upper and lower sides of the locking tooth.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model forms a closed structure by arranging a rivet body and a cover plate, and cooperates with a rubber layer and a rivet cap, thereby effectively enhancing the sealing performance of the rivet, having a good waterproof effect, and expanding the application scope of the rivet. The rivet body is located inside the rivet body to prevent the rivet body from loosening and detaching from the rivet body. The nail head is limited and fixed by using a buffer gasket and a buffer layer, and the nail core is further limited and fixed by cooperating with a clamping tooth and a clamping groove, thereby effectively preventing the nail head and the wick from loosening due to vibration, ensuring the connection stability of the rivet for a long time, and further enhancing the pressure resistance of the rivet, thereby improving the applicability of the rivet. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the rivet connection state of the utility model;

[0014] Figure 4 This is a cross-sectional view of the rivet body structure of the utility model;

[0015] Figure 5 This is a cross-sectional view of a new type of nail body structure used herein.

[0016] In the figure: 1, rivet body; 2, pressing groove 1; 3, fixing ring; 4, buffer gasket; 5, cover plate; 6, buffer layer; 7, rivet cap; 8, nail core; 9, nail head; 10, clamping groove; 11, rubber layer; 12, limiting ring; 13, deformation tube; 14, clamping tooth; 15, pressing groove 2; 16, workpiece. 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 technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5The utility model provides a technical solution: a closed drum-type core-pulling rivet, comprising a rivet body 1, a pressure groove 2 is arranged on the outer side of the rivet body 1, the number of the pressure grooves 2 is three, the interior of the rivet body 1 is welded and fixed with a fixing ring 3, a circular through hole is arranged at the center of the fixing ring 3, the fixing ring 3 is slidably connected with the outer side of the nail core 8 through the circular through hole, the upper surface of the fixing ring 3 is welded and fixed with a buffer gasket 4, the top of the rivet body 1 is welded and fixed with a cover plate 5, the bottom surface of the cover plate 5 is welded and fixed with a buffer layer 6, the bottom of the rivet body 1 is welded and fixed with a rivet cap 7, the center of the rivet cap 7 is provided with a conical hole, and the rivet cap 7 is through The rivet body 1 is movably connected with the outer side of the rubber layer 11 through the tapered hole, a nail core 8 is sleeved inside the rivet body 1, the top of the nail core 8 is welded and fixed to the nail head 9, a plurality of slots 10 are provided on the outer side of the nail core 8, the outer side of the nail core 8 is welded and fixed to the rubber layer 11, the outer side of the nail core 8 is welded and fixed to a limiting ring 12, the limiting ring 12 is located above the deformation tube 13, the upper surface of the rivet cap 7 is welded and fixed to the deformation tube 13, the side surface of the deformation tube 13 is welded and fixed to a plurality of teeth 14, the teeth 14 are movably connected to the slot 10, a pressing groove 2 15 is provided on the side surface of the deformation tube 13, and a workpiece 16 is provided on the upper surface of the rivet cap 7.

[0019] The buffer gasket 4 and the buffer layer 6 are both made of rubber material, and the nail head 9 is located between the buffer gasket 4 and the buffer layer 6. The nail head 9 is fixed and limited between the buffer gasket 4 and the buffer layer 6 by the rubber material, so as to fix the nail head 9 to prevent the nail head 9 from shaking and causing noise. At the same time, the buffering capacity of the buffer gasket 4 and the buffer layer 6 can effectively enhance the compressive strength of the rivet. When the rivet encounters stamping, the buffer gasket 4 and the buffer layer 6 will absorb and buffer the impact force, effectively enhancing the practicality of the rivet. A conical through hole is provided at the center of the rivet cap 7, and the conical through hole is larger at the top and smaller at the bottom. The rubber layer 11 extends downward from the edge to the center, and the rubber layer 11 is movably plugged with the rivet cap 7. The slot 10 is engaged with the clamping tooth 14, and there are two pressure grooves 15, which are respectively located at the upper and lower sides of the clamping tooth 14. When the nail core 8 moves toward the rivet cap 7 under the action of the rivet gun, it drives the rubber layer 11 to move downward until it is inserted into the tapered hole on the surface of the rivet cap 7, thereby enhancing the sealing effect of the rivet. At the same time, the downward movement of the nail core 8 will push the limiting ring 12 to make the deformation tube 13 deform under the cooperation of the second pressing groove 15, so that the deformation tube 13 extends to one side and the clamping tooth 14 is inserted into the inside of the clamping groove 10, thereby limiting and fixing the nail core 8 to prevent the rivet from shaking or even falling off due to vibration or pressure.

[0020] Working principle: When in use, the staff inserts the rivet body 1 into the reserved holes of the two connected workpieces 16, and fits the upper surface of the rivet cap 7 with the bottom surface of the workpiece 16, then combines the rivet gun with the bottom of the nail core 8, pulls the nail core 8 and the nail head 9 toward the rivet cap 7 through the rivet gun, and pushes the fixing ring 3 through the nail head 9 to make the rivet body 1 deform under the cooperation of the pressure groove 2, so as to cooperate with the rivet cap 7 to connect and fix the two workpieces 16. When the nail core 8 moves downward, the rubber layer 11 moves downward until it is inserted into the conical hole on the surface of the rivet cap 7, and the rubber layer 11 is used to make the rivet cap 7 and the nail cap 7 The connection of the core 8 is sealed, and the closed structure formed by the top cover plate 5 is cooperated to effectively enhance the sealing effect of the rivet and improve the waterproof performance. During the downward movement of the nail core 8, the limiting ring 12 is pushed to make the deformation tube 13 deform under the cooperation of the pressure groove 15, so that the deformation tube 13 extends to one side and produces an arc surface, and further the clamping tooth 14 is inserted into the corresponding clamping groove 10, so as to limit and fix the nail core 8, and the buffer gasket 4 and the buffer layer 6 are used to limit and fix the nail head 9, so that the vibration or external pressure that causes the rivet to shake or even fall off can be effectively reduced, thereby ensuring the stability of the rivet connection.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed drum-type blind rivet, comprising a rivet body (1), characterized in that: The outer side of the rivet body (1) is provided with a pressing groove (2); the interior of the rivet body (1) is fixedly connected to a fixing ring (3); the upper surface of the fixing ring (3) is fixedly connected to a buffer gasket (4); the top of the rivet body (1) is fixedly connected to a cover plate (5); the bottom surface of the cover plate (5) is fixedly connected to a buffer layer (6); the bottom of the rivet body (1) is fixedly connected to a rivet cap (7); a nail core (8) is provided inside the rivet body (1); the top of the nail core (8) is fixedly connected to a nail head (9); The outer side of the nail core (8) is provided with a plurality of grooves (10), the outer side of the nail core (8) is fixedly connected to the rubber layer (11), the outer side of the nail core (8) is fixedly connected to the limit ring (12), the upper surface of the rivet cap (7) is fixedly connected to the deformation tube (13), the side surface of the deformation tube (13) is fixedly connected to a plurality of teeth (14), the side surface of the deformation tube (13) is provided with a second pressing groove (15), and the upper surface of the rivet cap (7) is provided with a workpiece (16).

2. A closed drum type blind rivet according to claim 1, characterized in that: The buffer gasket (4) and the buffer layer (6) are both made of rubber material, and the nail head (9) is located between the buffer gasket (4) and the buffer layer (6).

3. A closed drum type blind rivet according to claim 1, characterized in that: A conical through hole is provided at the center of the rivet cap (7), and the conical through hole is larger at the top and smaller at the bottom. The rubber layer (11) extends obliquely downward from the edge to the center, and the rubber layer (11) is movably plugged into the rivet cap (7).

4. A closed drum type blind rivet according to claim 1, characterized in that: The clamping groove (10) is engaged with the clamping tooth (14), and the number of the second pressing groove (15) is two and they are respectively located on the upper and lower sides of the clamping tooth (14).

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