High-strength screw fastener

Abstract

The high-strength screw fastener comprises a nut and a screw rod, the nut is detachably arranged at the upper end of the screw rod, a middle hole is formed in the screw rod, a notch is formed in the position, located on the periphery of the middle hole, of the screw rod, a plurality of friction blocks are arranged in the notch, and the friction blocks are arranged in the notch. A middle column is arranged in the middle hole, and a main body structure of the whole fastener is formed by a nut and a screw rod; a plurality of connecting columns are fixedly arranged on the screw rod, a protective shell is detachably arranged at the upper end of the screw cap, the protective shell is mounted on the screw cap in a sleeving manner, connecting holes are formed in the protective shell and the screw cap, and the connecting holes are matched with the connecting columns, so that the protective shell, the screw cap and the screw rod are connected.

Description

Technical Field

[0001] The utility model relates to the field of high-strength fasteners, and more particularly to a high-strength screw fastener. Background Art

[0002] Fasteners are very common in people's lives. Screws and other fasteners are all fasteners. Fasteners are used to connect two parts or sections. High-strength fasteners are generally made of high-strength materials. The connection strength is greater than that of general fasteners, which is convenient for use between parts with higher connection requirements. Existing high-strength screw fasteners are generally metal rods and lack a waterproof structure. When the parts using fasteners are in a humid environment, water vapor can easily enter the parts from the joints between the fasteners and the holes, affecting the normal use of the fasteners, equipment, etc., and affecting the service life of the parts. At the same time, existing fasteners only achieve the connection between parts through the cooperation between the threads. During the use of the equipment, the vibration generated can easily cause the fasteners to rotate, thereby causing loosening and affecting the normal connection between parts. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the problems existing in the prior art, the utility model provides a high-strength screw fastener to solve the technical problems mentioned in the background technology.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a high-strength screw fastener, comprising a nut and a screw, wherein the nut is detachably mounted on the upper end of the screw, a middle hole is defined in the screw, and grooves are defined on the screw around the middle hole, wherein friction blocks are disposed in the grooves, wherein a plurality of friction blocks are disposed, and an intermediate column is disposed in the middle hole, wherein the nut and the screw constitute the main structure of the entire fastener;

[0007] A connecting column is fixedly provided on the screw rod, and there are multiple connecting columns. A protective shell is detachably provided on the upper end of the nut. The protective shell is sleeved and installed on the nut. Connecting holes are provided on the protective shell and the nut. The connecting holes cooperate with the connecting column to connect the protective shell, the nut and the screw rod.

[0008] The utility model is further configured such that an extension block cooperating with the notch is fixedly provided on the intermediate column, a long hole is provided on the screw rod, a long rod is fixedly provided on the lower end of the nut, the long rod and the long hole cooperate with each other, and a plurality of the long rods and the long holes are provided, thereby facilitating the installation of the intermediate column inside the screw rod.

[0009] The utility model is further configured such that a notch is provided on the side end of the screw rod at the opening position of the long hole, a clamping block is provided on the long rod, the clamping block cooperates with the notch, a collar is fixedly provided on the long rod, and multiple clamping blocks and the long rod are provided, thereby facilitating the clamping block to move through the notch.

[0010] The utility model is further configured as follows: a spring is provided in the collar, one end of the spring is fixedly connected between the long rods, the other end of the spring is fixedly connected to the clamping block, a limiting groove is provided on the intermediate column, the limiting groove and the clamping block cooperate with each other, and the cooperation between the clamping block and the limiting groove facilitates the connection between the intermediate column and the nut.

[0011] The utility model is further configured such that a thread is provided on the connecting column, a connecting piece is detachably provided on the connecting column, the connecting piece is sleeved and installed on the connecting column, the connecting piece and the connecting column are threadedly connected, and matching grooves are provided on the protective shell and the nut, thereby facilitating the connection between the protective shell, the nut and the screw.

[0012] The utility model is further configured such that the connecting piece and the matching groove cooperate with each other, a plurality of matching grooves are provided, a cross groove is provided on the upper end of the protective shell and the nut, a cross block is fixedly provided inside the protective shell, and the cross block and the cross groove cooperate with each other, so as to facilitate the cooperation of external tools with the fastener to screw the fastener into the hole.

[0013] The utility model is further configured such that anti-slip grooves are provided on the protective shell and the nut at the opening position of the matching groove, and a protruding block is fixedly provided at the lower end of the connecting piece. The protruding block and the anti-slip grooves cooperate with each other, and the rotation of the connecting piece is reduced by the cooperation between the protective grooves and the protruding block.

[0014] The utility model is further configured such that a mounting groove is provided at the lower end of the nut, a friction plate is fixedly provided in the mounting groove, a protrusion is fixedly provided at the lower end of the friction plate, and a plurality of protrusions are provided, so that the friction between the friction plate and the surface of the mounting position is increased by the protrusions.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a high-strength screw fastener with the following features:

[0017] Beneficial effects:

[0018] 1. The utility model provides a notch inside the screw rod, and a friction block is provided in the notch. When the entire screw fastener is used, the middle column is inserted into the middle hole opened on the screw rod, and the extension block provided on the middle column enters the notch. The extension block pushes the friction block to move, so that the front end of the friction block extends out of the screw rod, and the hard rubber material of the friction block is squeezed by the protruding thread in the hole into which the screw fastener is screwed. Therefore, the friction block and the protruding thread in the hole are tightly matched. When water flows into the hole along the threads from the threaded matching position of the fastener and the hole, the friction block prevents the movement of water, thereby achieving a waterproof effect. At the same time, through the friction plate provided at the lower end of the nut, when the fastener is installed, the nut squeezes the friction card, and the friction plate fits tightly with the surface of the part to prevent water from entering, thereby achieving a waterproof effect of the entire threaded fastener.

[0019] 2. The utility model provides a friction block, which is squeezed by the protruding thread in the hole into which the screw fastener is screwed, thereby increasing the friction between the screw and the hole through the close fit between the friction block and the protruding thread in the hole, thereby facilitating the close connection between the fastener and the hole and reducing the loosening of the fastener. At the same time, through the close contact between the friction plate and the surface of the part, the protruding block provided on the friction plate increases the friction between the friction plate and the surface of the part, thereby increasing the friction between the entire fastener and the part, reducing the loosening of the fastener and facilitating the use of the fastener.

[0020] 3. The utility model provides a protective shell on the upper end of the nut to protect the nut. Therefore, when the entire fastener is used for a long time, the external environment will not cause wear to the nut, thereby facilitating the long-term use of the nut. When the protective shell is damaged and cannot be replaced in time, the protective shell can be removed and the nut can continue to be used, thereby facilitating the long-term use of the entire fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-strength screw fastener;

[0022] Figure 2 A schematic diagram of the overall structure of a high-strength screw fastener;

[0023] Figure 3 This is a schematic diagram of the matching structure of a nut and a screw of a high-strength screw fastener;

[0024] Figure 4 This is a schematic diagram of the matching structure of the middle column and the screw rod of a high-strength screw fastener;

[0025] Figure 5 This is a schematic diagram of the matching structure of a protective shell, nut and intermediate column of a high-strength screw fastener.

[0026] In the figure: 1. Nut; 2. Screw; 3. Middle hole; 4. Notch; 5. Friction block; 6. Middle column; 7. Connecting column; 8. Protective shell; 9. Connecting hole; 10. Extension block; 11. Long hole; 12. Long rod; 13. Notch; 14. Block; 15. Ring; 16. Spring; 17. Limiting groove; 18. Connecting plate; 19. Matching groove; 20. Cross groove; 21. Cross block; 22. Anti-slip groove; 23. Raised block; 24. Mounting groove; 25. Friction plate; 26. Protruding block. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0030] See also Figure 1-5 A high-strength screw fastener includes a nut 1 and a screw 2. The nut 1 is detachably mounted on the upper end of the screw 2. A middle hole 3 is formed in the screw 2. A slot 4 is formed around the middle hole 3 on the screw 2. A friction block 5 is disposed in the slot 4. There are multiple friction blocks 5. An intermediate column 6 is disposed in the middle hole 3.

[0031] A connecting column 7 is fixedly provided on the screw rod 2, and there are multiple connecting columns 7. A protective shell 8 is detachably provided on the upper end of the nut 1, and the protective shell 8 is sleeved and installed on the nut 1. Connecting holes 9 are provided on the protective shell 8 and the nut 1, and the connecting holes 9 cooperate with the connecting column 7.

[0032] In this embodiment, the main structure of the entire screw fastener is formed by the cooperation of the nut 1, the screw rod 2 and the intermediate column 6, and the friction between the entire fastener and the hole is increased by the friction block 5.

[0033] More specifically, the protective shell 8 protects the nut 1 to reduce wear of the nut 1 .

[0034] See also Figure 1-Figure 5, as an implementation method of a high-strength screw fastener: an extension block 10 is fixedly provided on the intermediate column 6 and cooperates with the notch 4, a long hole 11 is opened on the screw rod 2, and a long rod 12 is fixedly provided at the lower end of the nut 1, the long rod 12 and the long hole 11 cooperate with each other, and the long rod 12 and the long hole 11 are both provided with a plurality of, a notch 13 is provided on the side end of the screw 2 at the opening position of the long hole 11, a clamping block 14 is provided on the long rod 12, and the clamping block 14 cooperates with the notch 13, a collar 15 is fixedly provided on the long rod 12, and the clamping block 14 and the long rod 12 are both provided with a plurality of, a spring 16 is provided in the collar 15, one end of the spring 16 is fixedly connected between the long rod 12, and the other end of the spring 16 is fixedly connected with the clamping block 14, a limiting groove 17 is opened on the intermediate column 6, and the limiting groove 17 cooperates with the clamping block 14, and a thread is provided on the connecting column 7, connecting A connecting piece 18 is detachably provided on the column 7, and the connecting piece 18 is sleeved and installed on the connecting column 7. The connecting piece 18 is threadedly connected to the connecting column 7. A matching groove 19 is provided on the protective shell 8 and the nut 1. The connecting piece 18 and the matching groove 19 cooperate with each other, and there are multiple matching grooves 19. A cross groove 20 is provided on the upper end of the protective shell 8 and the nut 1. A cross block 21 is fixedly provided inside the protective shell 8, and the cross block 21 cooperates with the cross groove 20. Anti-slip grooves 22 are provided on the protective shell 8 and the nut 1 at the opening position of the matching groove 19. The lower end of the connecting piece 18 is fixedly provided with a protruding block 23, and the protruding block 26 cooperates with the anti-slip groove 22. A mounting groove 24 is provided at the lower end of the nut 1, and a friction plate 25 is fixedly provided in the mounting groove 24. A protruding block 26 is fixed at the lower end of the friction plate 25, and there are multiple protruding blocks 26.

[0035] Specifically, when installing the entire screw fastener, first install the nut 1 on the screw rod 2 through the cooperation of the connecting column 7 and the connecting hole 9, without installing the connecting piece 18, and rotate the nut 1 and the screw rod 2 through the cooperation of the tool and the cross slot 20, so that the screw rod 2 enters the hole to be installed, separate the nut from the screw rod 2, and install the friction plate 25 in the installation groove 24 opened at the lower end of the nut through bonding, and insert the intermediate column 6 into the intermediate hole 3 opened on the screw rod 2. The extension block 10 provided on the intermediate column 6 enters the missing groove 4, and the friction block 5 is pushed to move by the extension block 10 so that the front end of the friction block 5 extends out of the screw rod 2. The hard rubber material of the friction block 5 is squeezed with the protruding thread in the hole into which the screw fastener is screwed, and the installation of the intermediate column 6 is completed. After the nut is installed on the screw rod 2, the long hole 11 is connected to the long The cooperation of the rod 12, the cooperation of the connecting hole 9 and the connecting column 7, when the long rod 12 enters the long hole 11, the elastic force of the spring 16 itself pushes the block 14 to move, and pushes the block 14 out of the notch 13, and enters the limiting groove 17 opened on the block 14 from the notch 13, connecting the nut and the block 14, so as to facilitate the subsequent maintenance or disassembly of the entire fastener. The intermediate column 6 and the screw 2 are separated, and the connecting piece 18 is installed on the connecting column 7 through the threaded cooperation with the connecting column 7, and enters the cooperation groove 19 opened on the nut to complete the connection between the nut and the screw 2, and the protective shell 8 is installed on the outside of the nut, and the connecting column 7 passes through the connecting hole 9 opened on the protective shell 8, and the connecting piece 18 is installed on the connecting column 7 through the threaded cooperation with the connecting column 7 to complete the installation of the entire screw fastener.

[0036] In summary, when used as a whole:

[0037] When installing the screw 2 into the matching hole, first install the nut 1 on the screw 2 through the matching of the connecting column 7 and the connecting hole 9, do not install the connecting piece 18, and rotate the nut 1 and the screw 2 through the matching of the tool and the cross slot 20 to make the screw 2 enter the hole to be installed.

[0038] When the screw rod 2 is connected to the nut, the nut is separated from the screw rod 2, and the friction plate 25 is installed in the installation groove 24 opened at the lower end of the nut by bonding. The intermediate column 6 is inserted into the intermediate hole 3 opened on the screw rod 2. The extension block 10 provided on the intermediate column 6 enters the slot 4. The extension block 10 pushes the friction block 5 to move so that the front end of the friction block 5 extends out of the screw rod 2. The hard rubber material of the friction block 5 is squeezed with the protruding thread in the hole into which the screw fastener is screwed, completing the installation of the intermediate column 6. When the nut is installed on the screw rod 2, the long hole 11 is connected to the long rod. 12, the connection hole 9 and the connection column 7. When the long rod 12 enters the long hole 11, the block 14 is pushed to move by the elastic force of the spring 16 itself, and the block 14 is pushed out of the notch 13, and enters the limiting groove 17 opened on the block 14 from the notch 13, connecting the nut and the block 14, so as to facilitate the subsequent maintenance or disassembly of the entire fastener. The intermediate column 6 and the screw 2 are separated, and the connecting piece 18 is installed on the connecting column 7 through the threaded cooperation with the connecting column 7, and enters the cooperation groove 19 opened on the nut to complete the connection between the nut and the screw 2.

[0039] When installing the protective shell 8, the protective shell 8 is installed on the outside of the nut, the connecting column 7 passes through the connecting hole 9 opened on the protective shell 8, and the connecting piece 18 is installed on the connecting column 7 through the threaded cooperation with the connecting column 7 to complete the installation of the entire screw fastener.

[0040] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-strength screw fastener comprising a nut (1) and a screw (2), characterized in that: The nut (1) is detachably arranged on the upper end of the screw (2); a middle hole (3) is provided in the screw (2); a slot (4) is provided on the screw (2) around the middle hole (3); a friction block (5) is provided in the slot (4); a plurality of friction blocks (5) are provided; and a middle column (6) is provided in the middle hole (3); A connecting column (7) is fixedly provided on the screw rod (2), and a plurality of connecting columns (7) are provided. A protective shell (8) is detachably provided on the upper end of the nut (1), and the protective shell (8) is sleeved and mounted on the nut (1). Connecting holes (9) are provided on both the protective shell (8) and the nut (1), and the connecting holes (9) cooperate with the connecting column (7).

2. A high-strength screw fastener according to claim 1, characterized in that: An extension block (10) that cooperates with the slot (4) is fixedly provided on the intermediate column (6), a long hole (11) is provided on the screw rod (2), and a long rod (12) is fixedly provided at the lower end of the nut (1), wherein the long rod (12) and the long hole (11) cooperate with each other, and a plurality of the long rods (12) and the long holes (11) are provided.

3. The high-strength screw fastener according to claim 2, characterized in that: A notch (13) is provided on the side end of the screw rod (2) at the opening position of the long hole (11), and a clamping block (14) is provided on the long rod (12). The clamping block (14) cooperates with the notch (13). A collar (15) is fixedly provided on the long rod (12), and a plurality of the clamping blocks (14) and the long rod (12) are provided.

4. A high-strength screw fastener according to claim 3, characterized in that: A spring (16) is provided in the collar (15), one end of the spring (16) is fixedly connected between the long rod (12), and the other end of the spring (16) is fixedly connected to the clamping block (14). A limiting groove (17) is provided on the intermediate column (6), and the limiting groove (17) and the clamping block (14) cooperate with each other.

5. The high-strength screw fastener according to claim 1, characterized in that: The connecting column (7) is provided with a thread, and a connecting piece (18) is detachably provided on the connecting column (7). The connecting piece (18) is sleeved and mounted on the connecting column (7), and the connecting piece (18) and the connecting column (7) are threadedly connected. The protective shell (8) and the nut (1) are both provided with a matching groove (19).

6. The high-strength screw fastener according to claim 5, characterized in that: The connecting piece (18) and the matching groove (19) cooperate with each other, and a plurality of matching grooves (19) are provided. The upper ends of the protective shell (8) and the nut (1) are both provided with a cross groove (20). A cross block (21) is fixedly provided inside the protective shell (8), and the cross block (21) and the cross groove (20) cooperate with each other.

7. The high-strength screw fastener according to claim 5, characterized in that: Anti-slip grooves (22) are provided on the protective shell (8) and the nut (1) at the opening position of the matching groove (19), and a protrusion block (23) is fixedly provided at the lower end of the connecting piece (18), and the protrusion block (23) and the anti-slip grooves (22) cooperate with each other.

8. The high-strength screw fastener according to claim 2, characterized in that: A mounting groove (24) is provided at the lower end of the nut (1), a friction plate (25) is fixedly provided in the mounting groove (24), a protruding block (26) is fixedly provided at the lower end of the friction plate (25), and a plurality of protruding blocks (26) are provided.

Images