High-strength closed type locking rivet

Abstract

The utility model relates to the technical field of closed type rivets, and discloses a high-strength closed type locking rivet which comprises a rivet rod, a fracture groove is formed in the rivet rod, a rivet cap is arranged on the outer wall of the rivet rod, a rivet core is fixedly connected to the bottom end of the rivet rod, and a conical block is fixedly connected to the lower surface of the rivet core. A conical block is arranged on the outer wall of the rivet core, a rivet pipe is arranged on the outer wall of the conical block, the lower surface of the rivet cap is fixedly connected to the upper surface of the rivet pipe, a plurality of clamping blocks are fixedly connected to the outer wall of the rivet core, conical strips are arranged on the outer walls of the clamping blocks, the outer walls of the conical strips are fixedly connected to the interior of the rivet pipe, and two sealing rings are arranged in the rivet pipe. According to the utility model, through the cooperation of the rivet core, the conical block, the clamping block, the rivet cap, the rivet tube, the conical strip and the sealing ring, the movement of the rivet core is clamped and limited, the rivet core is ensured to be firmly locked in the rivet tube after riveting is completed, the rivet core is prevented from loosening or falling off, and the connection reliability is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to closed rivet technical field especially relates to a high strength closed locking rivet. BACKGROUND

[0002] Rivets are widely used in metal structure, equipment assembly and sealing connection fasteners, because of its simple structure, firm connection, anti-vibration and other advantages are widely used. And closed rivet is a kind of riveting fastener with sealing function, usually by cap shell, mandrel and closed bottom, its bottom is completely closed, can prevent moisture, oil stains, gas or dust etc. Penetration through rivet hole in riveting process, thereby has good sealing property and anticorrosion ability. In order to ensure that no loosening, fracture or falling occurs in the long-term use, need to use a kind of high strength closed locking rivet.

[0003] High strength closed locking rivet is a kind of riveting fastener with sealing function, with mechanical locking structure and made of high strength material, in the past technology, the cooperation of rivet core and rivet tube is mostly dependent on simple mechanical clamping or friction force locking, it is difficult to realize accurate limit control, thereby causing the reliability of connection to reduce, influence the use of the rivet. CONTENT OF THE UTILITY MODEL

[0004] In order to make up for the above shortcomings, the utility model provides a kind of high strength closed locking rivet, to improve the rivet core and rivet tube mostly dependent on simple mechanical clamping or friction force locking, it is difficult to realize accurate limit control, thereby causing the problem of connection reliability to reduce.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of high strength closed locking rivet, including rivet rod, the inside of the rivet rod is provided with fracture slot, the outer wall of the rivet rod is provided with rivet cap, the bottom end of the rivet rod is fixedly connected with rivet core, the lower surface of the rivet core is fixedly connected with conical block, the outer wall of the conical block is provided with rivet tube, the lower surface of the rivet cap is fixedly connected on the upper surface of rivet tube, the outer wall of the rivet core is fixedly connected with multiple clamping blocks, the outer wall of the clamping block is provided with conical strip, the outer wall of the conical strip is fixedly connected in the inside of rivet tube, the inside of the rivet tube is provided with two sealing rings, the inside of the rivet tube is provided with auxiliary assembly.

[0007] Preferably, the auxiliary assembly includes fixed rod, both ends of the fixed rod are fixedly connected in the inside of rivet tube, the outer wall of the fixed rod is fixedly connected with multiple reinforcing rings.

[0008] Preferably, the outer wall of the reinforcing ring is fixedly connected on the outer wall of rivet tube, multiple the reinforcing rings are equidistantly arranged.

[0009] Preferably, the outer wall of the nail core is slidingly connected to the inner wall of the nail tube, and the outer wall of the sealing ring is arranged on the outer wall of the nail core.

[0010] Preferably, the two sealing rings are arranged in an up-down manner.

[0011] Preferably, the clamping block is provided with a plurality of clamping blocks arranged at equal intervals.

[0012] Preferably, the tapered strip is provided with four tapered strips arranged at equal intervals.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the cooperation between the nail core, the tapered block, the clamping block, the nail cap, the nail tube, the tapered strip and the sealing ring limits the movement of the nail core, ensures that the nail core is firmly locked in the inside of the nail tube after riveting, prevents the nail core from loosening or falling off, enhances the connection reliability, improves the sealing property between the nail tube and the nail core, prevents external medium from entering the inside of the nail tube and affecting the fixation of the nail core. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A perspective view of a high-strength closed locking rivet is provided for the utility model;

[0016] Figure 2 A nail core partial structure schematic view of a high-strength closed locking rivet is provided for the utility model;

[0017] Figure 3 A nail tube internal structure sectional view schematic view of a high-strength closed locking rivet is provided for the utility model;

[0018] Figure 4 A tapered strip partial structure schematic view of a high-strength closed locking rivet is provided for the utility model.

[0019] LEGEND:

[0020] 1, nail rod;2, fracture groove;3, nail core;4, tapered block;5, clamping block;6, nail cap;7, nail tube;8, tapered strip;9, fixed rod;10, reinforcing ring;11, sealing ring. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model provides a kind of embodiment: a high-strength closed locking rivet, including rivet stem 1, the inside of rivet stem 1 is provided with fracture groove 2, the outer wall of rivet stem 1 is provided with rivet cap 6, the bottom end of rivet stem 1 is fixedly connected with rivet core 3, the lower surface of rivet core 3 is fixedly connected with conical block 4, the outer wall of conical block 4 is provided with rivet tube 7, the lower surface of rivet cap 6 is fixedly connected on the upper surface of rivet tube 7, the outer wall of rivet core 3 is fixedly connected with multiple clamping blocks 5, the outer wall of clamping block 5 is provided with conical strip 8, the outer wall of conical strip 8 is fixedly connected in the inside of rivet tube 7, the inside of rivet tube 7 is provided with two sealing rings 11, the inside of rivet tube 7 is provided with auxiliary assembly;

[0023] Specifically, two sealing rings 11 are fixed in the inside of rivet tube 7, and sealing ring 11 is set as elasticity, to facilitate the lowermost clamping block 5 and larger sealing ring 11 to be attached under the action of clamping block 5, and the outer wall of the lower side of rivet core 3 is attached with the inner wall of rivet tube 7, to further improve the sealing property of the connecting place of rivet core 3 and rivet tube 7, the outer wall of conical block 4 is clamped in the inside of rivet tube 7, with the movement of conical block 4, the inside of rivet tube 7 is pulled, to make rivet tube 7 expand and deform, when conical block 4 moves, clamping block 5 is clamped in conical strip 8, to limit the movement of conical block 4, so that rivet stem 1 and rivet core 3 are separated through fracture groove 2, rivet tube 7 is clamped between two workpieces, the middle part of rivet tube 7 is below the lower side workpiece, and the lower surface of rivet cap 6 is attached with the upper side workpiece, with the expansion and deformation of rivet tube 7, two workpieces are fixed, the inside of rivet tube 7 achieves the fixed effect of conical strip 8, and the inside of rivet cap 6 offsets and limits the movement of rivet stem 1.

[0024] Referring to Figure 2 , auxiliary assembly includes fixed rod 9, both ends of fixed rod 9 are fixedly connected in the inside of rivet tube 7, the outer wall of fixed rod 9 is fixedly connected with multiple reinforcing rings 10;The outer wall of reinforcing ring 10 is fixedly connected on the outer wall of rivet tube 7, and multiple reinforcing rings 10 are equidistantly arranged;

[0025] Specifically, multiple fixed rods 9 are arranged, and are annularly arranged, to enhance the strength of rivet tube 7 as a whole, when rivet tube 7 expands, the middle part of rivet tube 7 moves upward, to press fixed rod 9 to deform, the outer wall of fixed rod 9 is provided with reinforcing ring 10, to make the incremental expansion of the middle part of rivet tube 7, to assist the expansion of rivet tube 7, to make rivet tube 7 expand more evenly, to avoid uneven stress of rivet tube 7, so that rivet tube 7 expands unevenly, to affect the fixation of workpiece.

[0026] Referring to Figure 3 , the outer wall of rivet core 3 is slidingly connected on the inner wall of rivet tube 7, and the outer wall of sealing ring 11 is arranged on the outer wall of rivet core 3.

[0027] Specifically, the inner wall of the nail tube 7 matches the outer wall of the nail core 3, facilitating the offset limitation of the movement of the nail core 3, and the upper outer wall of the nail core 3 is attached to the smaller sealing ring 11, thereby improving the sealing performance of the opening of the nail cap 6 and the nail tube 7.

[0028] Referring to Figure 3 and Figure 4 , the two sealing rings 11 are arranged in an up-down manner; the clamping blocks 5 are arranged in multiple rows and equidistantly; the four tapered strips 8 are arranged in equidistant rows;

[0029] Specifically, the two sealing rings 11 are arranged in different sizes, the smaller sealing ring 11 is arranged inside and upward of the nail tube 7, and the larger sealing ring 11 is arranged below the smaller one; the clamping blocks 5 are arranged in multiple rows, in a ring shape, and correspond to the four tapered strips 8, so that the upper three rows of clamping blocks 5 are clamped in the gaps between the multiple tapered strips 8, and the lowermost clamping block 5 is clamped at the larger sealing ring 11, thereby limiting the movement of the clamping blocks 5.

[0030] Working principle: when the rivet is used, the nail tube 7 penetrates through two workpieces to be connected, the nail cap 6 is pressed against the upper workpiece, the nail rod 1 is connected with a manual or pneumatic rivet gun, the nail rod 1, the nail core 3 and the tapered block 4 are driven upward by the rivet gun, the upper three rows of clamping blocks 5 are clamped in the gaps between the multiple tapered strips 8, the movement of the nail core 3 is limited, so that the nail core 3 presses against the two sealing rings 11, the gap between the nail core 3 and the nail tube 7 is reduced, and the lower end of the nail tube 7 is driven upward with the movement of the tapered block 4, the middle part of the nail tube 7 is deformed, the middle part of the nail tube 7 is subjected to more uniform pressure and expands in a stepwise manner during the deformation, the nail rod 1 and the nail core 3 are separated after the expansion to a proper limit, the nail core 3 is attached to the inner wall of the nail tube 7, and the sealing performance of the rivet after being fixed is improved under the action of the sealing ring 11, the two workpieces are fixed by the nail cap 6 and the deformed nail tube 7, and the rivet not only limits the movement of the nail core 3 but also realizes the uniformity of the expansion of the nail tube 7.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-strength closed-type locking rivet, comprising a rivet shank (1), characterized in that: The nail rod (1) has a fracture groove (2) inside. The nail rod (1) has a nail cap (6) on its outer wall. The bottom end of the nail rod (1) is fixedly connected to a nail core (3). The lower surface of the nail core (3) is fixedly connected to a conical block (4). The outer wall of the conical block (4) is provided with a nail tube (7). The lower surface of the nail cap (6) is fixedly connected to the upper surface of the nail tube (7). The outer wall of the nail core (3) is fixedly connected to multiple locking blocks (5). The outer wall of the locking blocks (5) is provided with a conical strip (8). The outer wall of the conical strip (8) is fixedly connected to the inside of the nail tube (7). The inside of the nail tube (7) is provided with two sealing rings (11). The inside of the nail tube (7) is provided with auxiliary components.

2. The high-strength closed-type locking rivet according to claim 1, characterized in that: The auxiliary component includes a fixing rod (9), both ends of which are fixedly connected to the inside of the nail tube (7), and multiple reinforcing rings (10) are fixedly connected to the outer wall of the fixing rod (9).

3. The high-strength closed-type locking rivet according to claim 2, characterized in that: The outer wall of the reinforcing ring (10) is fixedly connected to the outer wall of the nail tube (7), and the multiple reinforcing rings (10) are arranged at equal intervals.

4. The high-strength closed-type locking rivet according to claim 1, characterized in that: The outer wall of the nail core (3) is slidably connected to the inner wall of the nail tube (7), and the outer wall of the sealing ring (11) is disposed on the outer wall of the nail core (3).

5. A high-strength closed-type locking rivet according to claim 1, characterized in that: The two sealing rings (11) are arranged vertically.

6. A high-strength closed-type locking rivet according to claim 1, characterized in that: The card blocks (5) are provided in multiple and are arranged at equal intervals.

7. A high-strength closed-type locking rivet according to claim 1, characterized in that: The tapered strips (8) are provided in four equidistant arrangement.

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