Novel high-strength bolt fastener

Abstract

The novel high-strength bolt fastener comprises a screw cap, a threaded rod and a nut, the bottom end of the screw cap is fixedly connected with the threaded rod, the nut is in threaded connection with the outer surface of the threaded rod, a strip-shaped groove is formed in the middle of the interior of the threaded rod, and the strip-shaped groove is in threaded connection with the threaded rod. A connecting rod penetrating and extending to the outer side of the top end of the nut is movably connected to the middle of the interior of the strip-shaped groove, side grooves are formed in the two sides, close to the bottom end, of the threaded rod, limiting rods are movably connected to the interiors of the side grooves in the two sides, and the bottom ends of the limiting rods are hinged to the bottom ends of the interiors of the side grooves. When the inner side of the nut makes contact with the limiting rod, the limiting rod can be pushed into the side groove, when the nut threads rotate to the side away from the limiting rod, the limiting rod rotates around one end of the hinge shaft to the outer side of the side groove, and therefore resistance can be formed between the limiting rod and the bottom end of the nut; and the nut is prevented from being separated from the threaded rod after long-time use.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a new type of high-strength bolt fastener. Background Technique

[0002] Fasteners are a type of mechanical parts used for fastening connections and are extremely widely applied. Among them, a bolt is a cylindrical threaded fastener used in conjunction with a nut. A type of fastener composed of two parts, a head and a screw rod, the screw rod has an external thread, the nut is provided with a threaded hole, and the screw rod cooperates with the nut to be used for fastening and connecting two parts with through holes.

[0003] However, for some bolt fasteners, when fixing for a long time, the bolt may cause the fixing effect to gradually weaken over time, resulting in the separation between the nut and the screw rod; therefore, it does not meet the existing requirements, and for this reason, we propose a new type of high-strength bolt fastener. Content of the Utility Model

[0004] The purpose of the utility model is to provide a new type of high-strength bolt fastener to solve the problem that for the bolt fastener mentioned in the above background technique, when fixing for a long time, the bolt may cause the fixing effect to gradually weaken over time, resulting in the separation between the nut and the screw rod.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A new type of high-strength bolt fastener, including a nut, a threaded rod, and a nut. The bottom end of the nut is fixedly connected to the threaded rod, the nut is threadedly connected to the outer surface of the threaded rod. A strip-shaped groove is opened in the middle of the threaded rod. In the middle of the strip-shaped groove, a connecting rod that penetrates and extends to the outside of the top end of the nut is movably connected. On both sides of the threaded rod near the bottom end, side grooves are opened. In the inner parts of both side grooves, limiting rods are movably connected, and the bottom end of the limiting rod is hinged to the bottom end inside the side groove.

[0006] Preferably, through holes that are communicated with the strip-shaped groove are opened on one side of the two side grooves facing each other. Both limiting rods are arranged in an L shape. On one side of the two limiting rods facing each other, they penetrate through the through holes and extend into the strip-shaped groove.

[0007] Preferably, at the bottom end of the connecting rod and inside the strip-shaped groove, a connecting block is fixedly connected. A clamping groove is opened on the outer surface of the connecting block near the middle.

[0008] Preferably, one end of the two limiting rods that penetrate and extend into the strip-shaped groove is clamped with the clamping groove.

[0009] Preferably, at the bottom end of the strip-shaped groove and inside the threaded rod, a groove that is communicated with the strip-shaped groove is opened, and the diameter of the groove is smaller than the diameter of the strip-shaped groove.

[0010] Preferably, a prolonging rod movably penetrating and extending into the groove is fixedly connected to the bottom end of the connecting block. A spring is fixedly connected between the bottom end of the connecting block and the bottom end of the strip-shaped groove, and the spring is wound around the outer surface of the prolonging rod.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, the nut is threadedly rotatably connected to the bottom end of the threaded rod. When the inner side of the nut contacts the limiting rod, since one end of the limiting rod is hinged inside the side groove, the limiting rod can be pushed into the side groove. When the nut is threadedly rotated to the side away from the limiting rod, the limiting rod rotates to the outside of the side groove around one end of the hinge shaft, thereby forming a resistance with the bottom end of the nut to prevent the nut from detaching from the threaded rod after long-term use.

[0013] 2. In the present utility model, by pressing the connecting rod downward, the connecting rod drives the prolonging rod to move into the groove, thereby squeezing the spring to generate deformation. While the connecting rod moves downward, it drives the connecting block to move downward, and the clamping groove squeezes one end of the limiting rod, thereby driving the limiting rod to contract into the side groove, releasing the block on the bottom end of the nut, and then the nut can be rotated to disconnect from the threaded rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0015] Figure 2 is a front cross-sectional view of the whole of the present utility model;

[0016] Figure 3 is of the present utility model Figure 2 a schematic structural diagram of part A in;

[0017] Figure 4 is of the present utility model Figure 2 a schematic structural diagram of part B in.

[0018] In the figure: 1, nut; 2, threaded rod; 201, strip-shaped groove; 202, side groove; 203, groove; 3, nut; 4, connecting rod; 5, limiting rod; 6, connecting block; 601, clamping groove; 7, through hole; 8, prolonging rod; 9, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] Please refer to Figures 1 to 4, an embodiment provided by the present utility model: a new type of high-strength bolt fastener, including a nut 1, a threaded rod 2 and a nut 3. The bottom end of the nut 1 is fixedly connected to the threaded rod 2, and the nut 3 is threadedly connected to the outer surface of the threaded rod 2. A strip-shaped groove 201 is formed in the middle of the threaded rod 2. In the middle of the strip-shaped groove 201, a connecting rod 4 that penetrates and extends to the outside of the top end of the nut 1 is movably connected. On both sides of the threaded rod 2 near the bottom end, side grooves 202 are formed. In the inner parts of both side grooves 202, a limiting rod 5 is movably connected, and the bottom end of the limiting rod 5 is hinged to the bottom end inside the side groove 202.

[0021] On one side of the two opposite side grooves 202, through holes 7 that are connected to the strip-shaped groove 201 in a penetrating manner are formed. Both limiting rods 5 are arranged in an L shape. On one side of the two opposite limiting rods 5, they penetrate through the through holes 7 and extend into the strip-shaped groove 201. At the bottom end of the connecting rod 4 and inside the strip-shaped groove 201, a connecting block 6 is fixedly connected. On the outer surface of the connecting block 6 near the middle, a clamping groove 601 is formed. One end of each of the two limiting rods 5 that penetrates and extends into the strip-shaped groove 201 is clamped with the clamping groove 601.

[0022] By threadedly rotating and connecting the nut 3 from the bottom end of the threaded rod 2, when the inner side of the nut 3 contacts the limiting rod 5, since one end of the limiting rod 5 is hinged inside the side groove 202, the limiting rod 5 can be pushed into the side groove 202. When the nut 3 is threadedly rotated to the side away from the limiting rod 5, the limiting rod 5 rotates to the outside of the side groove 202 around one end of the hinge axis, thereby forming a resistance between the limiting rod 5 and the bottom end of the nut 3 to prevent the nut 3 from detaching from the threaded rod 2 after long-term use.

[0023] At the bottom end of the strip-shaped groove 201 and inside the threaded rod 2, a groove 203 that is connected to the strip-shaped groove 201 in a penetrating manner is formed, and the diameter of the groove 203 is smaller than the diameter of the strip-shaped groove 201. The bottom end of the connecting block 6 is fixedly connected with an extension rod 8 that movably penetrates into the groove 203. Between the bottom end of the connecting block 6 and the bottom end of the strip-shaped groove 201, a spring 9 is fixedly connected, and the spring 9 is wound around the outer surface of the extension rod 8.

[0024] By pressing down the connecting rod 4, the connecting rod 4 drives the extension rod 8 to move into the groove 203, thereby squeezing the spring 9 to compress and deform. While the connecting rod 4 moves downward, it drives the connecting block 6 to move downward, and the clamping groove 601 squeezes one end of the limiting rod 5, thereby driving the limiting rod 5 to contract into the side groove 202, releasing the block on the bottom end of the nut 3, and then the nut 3 can be rotated to disconnect from the threaded rod 2.

[0025] When using a high-strength bolt fastener, the nut 3 is threadedly rotated and connected from the bottom end of the threaded rod 2. When the inner side of the nut 3 contacts the limiting rod 5, one end of the limiting rod 5 is hinged inside the side groove 202, so that the limiting rod 5 can be pushed into the side groove 202. When the nut 3 is threadedly rotated to the side away from the limiting rod 5, the limiting rod 5 rotates to the outside of the side groove 202 around one end of the hinge axis, so as to form a resistance with the bottom end of the nut 3 to prevent the nut 3 from disengaging from the threaded rod 2 during long-term use.

[0026] When it is necessary to rotate and disengage the nut 3 from the surface of the threaded rod 2, by pressing down the connecting rod 4, the connecting rod 4 drives the extension rod 8 to move into the groove 203, thereby squeezing the spring 9 to compress and deform. While the connecting rod 4 moves downward, it drives the connecting block 6 to move downward, and the clamping groove 601 squeezes one end of the limiting rod 5, thereby driving the limiting rod 5 to contract into the side groove 202, releasing the block on the bottom end of the nut 3, and then the nut 3 can be rotated to disengage from the connection with the threaded rod 2.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present 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 present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A novel high-strength bolt fastener, comprising a nut (1), a threaded rod (2) and a nut (3), characterized in that: The bottom end of the nut (1) is fixedly connected to a threaded rod (2), the nut (3) is threadedly connected to the outer surface of the threaded rod (2), a strip groove (201) is provided in the middle of the threaded rod (2), a connecting rod (4) is movably connected in the middle of the strip groove (201) and extends through the outside of the top end of the nut (1), side grooves (202) are provided on both sides of the threaded rod (2) near the bottom end, the inside of the side grooves (202) on both sides are movably connected to a limiting rod (5), and the bottom end of the limiting rod (5) is hinged to the bottom end of the inside of the side groove (202).

2. A novel high-strength bolt fastener according to claim 1, characterized in that: The two side grooves (202) are each provided with a through hole (7) connected to the strip groove (201), and the two limit rods (5) are each arranged in an L-shape, and the two side grooves (5) are each provided with a through hole (7) on the opposite side and extend to the inside of the strip groove (201).

3. A new type of high-strength bolt fastener according to claim 2, characterized in that: A connecting block (6) is fixedly connected to the bottom end of the connecting rod (4) and located inside the strip-shaped groove (201), and a clamping groove (601) is provided on the outer surface of the connecting block (6) near the middle.

4. A new type of high-strength bolt fastener according to claim 3, characterized in that: One end of the two limiting rods (5) extending through the strip-shaped groove (201) is engaged with the engaging groove (601).

5. A novel high-strength bolt fastener according to claim 3, characterized in that: A groove (203) which is connected to the strip groove (201) and is through-connected to the strip groove (201) is provided at the bottom end of the strip groove (201) and is located inside the threaded rod (2), and the diameter of the groove (203) is smaller than the diameter of the strip groove (201).

6. A novel high-strength bolt fastener according to claim 5, characterized in that: The bottom end of the connection block (6) is fixedly connected to an extension rod (8) that movably penetrates and extends into the interior of the groove (203); a spring (9) is fixedly connected between the bottom end of the connection block (6) and the bottom end of the strip groove (201), and the spring (9) is wound around the outer surface of the extension rod (8).

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