Bolt fastener with inner fastener

Abstract

The utility model discloses a bolt fastener with an inner fastener. The bolt fastener comprises a fastener body. The fastener is composed of a screw rod and a nut, a hexagonal cap is arranged at the upper end of the screw rod, the hexagonal cap and the screw rod are integrally arranged, the nut is rotationally installed on the upper side of the screw rod, threaded grooves are formed in the screw rod and the hexagonal cap, and limiting mechanisms are arranged at the positions, located on the periphery of the threaded grooves, in the screw rod. And a jacking mechanism is rotationally mounted in the threaded groove. After the jacking mechanism rotates to enter the threaded groove, the jacking mechanism can be driven to move, the friction force between the nut and the screw rod is increased through the jacking mechanism, the nut and the screw rod are fastened, and the installation stability between the nut and the screw rod is improved.

Description

Technical Field

[0001] This utility model relates to the field of bolt fastener technology, specifically a bolt fastener with an internal fastener. Background Technology

[0002] Bolts are a type of mechanical part used to connect and fix components. They achieve their fastening function through threaded structures and are one of the most common basic parts in industry and daily life.

[0003] Chinese Patent No. 201710591236.0 discloses a bolt fastener with an inner fastener, including a bolt, a fastening nut, and an inner fastener. The bolt has a threaded section, and the inner fastener includes a bottom washer plate and an upper sleeve. The bottom washer plate has an annular ring that fits onto the bolt shank. The lower end of the upper sleeve mates with the inner ring edge of the bottom washer plate and is vertically connected and fixed. The inner wall of the upper sleeve has an internal threaded section that mates with the threaded section. There is a fastening gap at the threaded connection between the internal threaded section and the threaded section. The outer wall of the upper sleeve has an external threaded section, and the fastening nut is threaded onto the outside of the upper sleeve.

[0004] This utility model is very inconvenient to install and disassemble. When disassembling, it can only be removed in a destructive manner and cannot be reused. Utility Model Content

[0005] The purpose of this invention is to provide a bolt fastener with an internal fastener to solve the problems mentioned in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bolt fastener with an internal fastener, comprising a fastener; the fastener consists of a screw and a nut, the upper end of the screw is provided with a hexagonal nut, the hexagonal nut and the screw are integrally formed, the nut is rotatably mounted on the upper side of the screw, the screw and the hexagonal nut are provided with threaded grooves inside, the screw is provided with a limit mechanism located around the threaded groove inside, and a tightening mechanism is rotatably mounted inside the threaded groove.

[0007] Preferably, the hexagonal cap, nut, and screw are provided with a corrosion-resistant layer on their outer sides, and the corrosion-resistant layer is a chrome-plated layer.

[0008] Preferably, a flange is provided on the upper side of the hexagonal cap and nut, and the flange is integrally formed with the hexagonal cap and nut.

[0009] Preferably, the limiting mechanism consists of a ball and a groove, the groove being located around the inside of the screw, and the ball being slidably mounted inside the groove.

[0010] Preferably, the tightening mechanism consists of an internal threaded rod, a semi-circular head, and a push rod. The internal threaded rod, the semi-circular head, and the push rod are integrally formed. The upper end of the semi-circular head is located on the upper side of the internal threaded rod, and the push rod is located at the bottom end of the internal threaded rod. The internal threaded rod is rotatably installed inside the threaded groove.

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

[0012] 1. After the tightening mechanism rotates into the threaded groove, it will drive the tightening mechanism to move, thereby increasing the friction between the nut and the screw, tightening the nut and the screw, and increasing the stability of the installation between the nut and the screw;

[0013] 2. The flange is designed to increase the contact area between the hexagonal cap and nut and the workpiece, thereby increasing the friction between the hexagonal cap and nut;

[0014] 3. When in use, the limiting mechanism drives the ball to slide along the groove under the action of the tightening mechanism. The ball increases the friction between the screw and the nut, thus tightening and restricting the connection between the nut and the screw.

[0015] 4. When using the tightening mechanism, the operator inserts the tip of a screwdriver into the cross slot on the upper side of the semi-circular head and rotates the semi-circular head and the internal threaded rod. When the internal threaded rod rotates, it will drive the push rod to move downward, and the push rod will drive the limit mechanism to move. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of this utility model after it has been moved.

[0021] In the diagram: 1. Fastener; 2. Nut; 3. Screw; 4. Hexagonal cap; 5. Corrosion-resistant layer; 6. Flange; 7. Tightening mechanism; 8. Limiting mechanism; 9. Ball bearing; 10. Slide groove; 11. Threaded groove; 12. Push rod; 13. Internal threaded rod; 14. Semi-circular head. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the present invention, a bolt fastener with an internal fastener includes a fastener 1; the fastener 1 consists of a screw 3 and a nut 2, the upper end of the screw 3 is provided with a hexagonal cap 4, the hexagonal cap 4 and the screw 3 are integrally formed, the nut 2 is rotatably mounted on the upper side of the screw 3, the screw 3 and the hexagonal cap 4 are provided with a threaded groove 11, a limiting mechanism 8 is provided around the threaded groove 11 inside the screw 3, and a tightening mechanism 7 is rotatably mounted inside the threaded groove 11; the hexagonal cap 4, the nut 2 and the screw 3 are provided with... The corrosion-resistant layer 5 is a chrome-plated layer. The chrome plating used in the corrosion-resistant layer 5 has strong corrosion resistance, which can reduce the corrosion of the hexagonal cap 4, nut 2 and screw 3 during use and extend the service life of nut 2 and screw 3. The upper side of the hexagonal cap 4 and nut 2 is provided with a flange 6. The flange 6 is integrally set with the hexagonal cap 4 and nut 2. The flange 6 is set to increase the contact area between the hexagonal cap 4 and nut 2 and the workpiece, thereby increasing the friction between the hexagonal cap 4 and nut 2.

[0024] The limiting mechanism 8 consists of a ball bearing 9 and a slide groove 10. The slide groove 10 is located around the inside of the screw 3. The ball bearing 9 is slidably installed inside the slide groove 10. When in use, the limiting mechanism 8 drives the ball bearing 9 to slide along the slide groove 10 under the action of the tightening mechanism 7. The ball bearing 9 increases the friction between the screw 3 and the nut 2, thereby tightening and limiting the connection between the nut 2 and the screw 3.

[0025] The tightening mechanism 7 consists of an internal threaded rod 13, a semi-circular head 14, and a push rod 12. The internal threaded rod 13, the semi-circular head 14, and the push rod 12 are integrated. The upper end of the semi-circular head 14 is located on the upper side of the internal threaded rod 13, and the push rod 12 is located at the bottom end of the internal threaded rod 13. The internal threaded rod 13 is rotatably installed inside the threaded groove 11. When the tightening mechanism 7 is in use, the operator inserts the tip of a screwdriver into the cross slot on the upper side of the semi-circular head 14 and rotates the semi-circular head 14 and the internal threaded rod 13. When the internal threaded rod 13 rotates, it will drive the push rod 12 to move downward, and the push rod 12 will drive the limiting mechanism 8 to move.

[0026] The working principle and usage process of this utility model are as follows: In use, the workpiece is first installed using fastener 1, namely screw 3 and nut 2. After the workpiece is installed, the tightening mechanism 7 is rotated by a screwdriver. The tightening mechanism 7 reciprocates inside the threaded groove 11 through the thread. When the tightening mechanism 7 rotates into the threaded groove 11, it will drive the tightening mechanism 7 to move, thereby increasing the friction between the nut 2 and screw 3, tightening the nut 2 and screw 3, and increasing the stability of the installation between the nut 2 and screw 3.

[0027] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bolt fastener with an internal fastener, comprising a fastener (1); characterized in that: The fastener (1) consists of a screw (3) and a nut (2). A hexagonal cap (4) is provided at the upper end of the screw (3). The hexagonal cap (4) and the screw (3) are integrally formed. The nut (2) is rotatably mounted on the upper side of the screw (3). A threaded groove (11) is provided inside the screw (3) and the hexagonal cap (4). A limiting mechanism (8) is provided around the threaded groove (11) inside the screw (3). A tightening mechanism (7) is rotatably mounted inside the threaded groove (11).

2. A bolt fastener with an internal fastener according to claim 1, characterized in that: The hexagonal cap (4), nut (2) and screw (3) are provided with a corrosion-resistant layer (5) on their outer sides, and the corrosion-resistant layer (5) is a chromium-plated layer.

3. A bolt fastener with an internal fastener according to claim 1, characterized in that: A flange (6) is provided on the upper side of the hexagonal cap (4) and the nut (2), and the flange (6) is integrally formed with the hexagonal cap (4) and the nut (2).

4. A bolt fastener with an internal fastener according to claim 1, characterized in that: The limiting mechanism (8) consists of a ball (9) and a groove (10). The groove (10) is located around the inside of the screw (3), and the ball (9) is slidably installed inside the groove (10).

5. A bolt fastener with an internal fastener according to claim 1, characterized in that: The tightening mechanism (7) consists of an internal thread rod (13), a semi-circular head (14), and a push rod (12). The internal thread rod (13), the semi-circular head (14), and the push rod (12) are integrally formed. The upper end of the semi-circular head (14) is located on the upper side of the internal thread rod (13), and the push rod (12) is located at the bottom end of the internal thread rod (13). The internal thread rod (13) is rotatably installed inside the thread groove (11).

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