A self-tapping screw with anti-slip thread

Abstract

The utility model relates to the technical field of self-tapping screws, and in particular to a self-tapping screw with anti-slip thread. Its technical solution includes a nut and a screw, wherein the screw is fixedly connected to the bottom of the nut, and also includes a cross slot provided at the top of the nut, wherein a mounting slot is provided at the bottom of the cross slot, and a base is slidably installed in the mounting slot, and the clamping assembly includes a first rectangular slot and a second rectangular slot provided in the nut. The utility model uses a clamping block, a slide plate, a slide bar, a first spring, a second spring, a base, a fixed column, a limit block, a connecting rod, and a movable rod to achieve that when a screwdriver is inserted into the cross slot, the screwdriver is clamped by the clamping block so that the screwdriver is in a vertical state, and then force is applied to the screwdriver, thereby avoiding the phenomenon of self-tapping screw slippage caused by the screwdriver applying force to the side wall of the cross slot so that the cross slot is worn.

Description

Technical Field

[0001] The utility model relates to the technical field of self-tapping screws, in particular to a self-tapping screw with anti-slip thread. Background Art

[0002] Self-tapping screws are screws with a drill bit. They are constructed with special electric tools, and drilling, tapping, fixing and locking are completed at one time. Self-tapping screws are mainly used for the connection and fixing of some thinner plates, such as the connection between color steel plates, the connection between color steel plates and purlins and wall beams, etc. Self-tapping screws are often exposed outdoors and have strong corrosion resistance.

[0003] During the disassembly and assembly process of existing self-tapping screws, the screwdriver and the end of the self-tapping screw are prone to slippage, making the disassembly and assembly of the self-tapping screws more difficult. The usual cause of slippage is that the screwdriver is used with an oblique force, causing the screwdriver to apply force to the side wall of the cross groove at the end of the self-tapping screw, causing the cross groove to be worn, thereby causing the self-tapping screw to slip. Therefore, we propose a self-tapping screw with anti-slip threads. Summary of the invention

[0004] The utility model aims to provide a self-tapping screw with anti-slip thread to solve the problem that a screwdriver in the background technology applies force to the side wall of the cross groove at the end of the self-tapping screw, causing the cross groove to be worn.

[0005] The technical solution of the utility model is: a self-tapping screw with anti-slip wire, comprising a nut and a screw, wherein the screw is fixedly connected to the bottom of the nut, and further comprising:

[0006] A cross groove is provided on the top of the nut, a mounting groove is provided at the bottom of the cross groove, and a base is slidably installed in the mounting groove;

[0007] The clamping assembly includes a first rectangular groove and a second rectangular groove which are provided in the nut.

[0008] Optionally, a conical groove is provided on the top of the base, two groups of fixing columns are fixedly installed on the bottom of the installation groove, and sliding grooves for the fixing columns to slide are provided on both sides of the bottom of the base.

[0009] Optionally, the first rectangular groove is connected to the second rectangular groove, and the first rectangular groove is connected to the cross groove.

[0010] Optionally, a limit ring is fixedly installed at one end of the fixing column located in the slide slot, a fixing ring is fixedly installed at one end of the slide slot away from the base, and a second spring is fixedly connected between the bottom of the installation slot and the base. The second spring is sleeved outside the fixing column.

[0011] Optionally, the clamping assembly further comprises a sliding rod fixedly mounted in the second rectangular groove, a sliding plate is slidably sleeved on the sliding rod, a clamping block is fixedly mounted on the top of the sliding plate, and a rectangular hole is opened on the top of the nut for the sliding plate to slide.

[0012] Optionally, the clamping assembly further comprises a first spring fixedly connected between the slide plate and the second rectangular groove, the first spring being sleeved on the outside of the slide rod, and a rubber pad being fixedly mounted on one side of the clamping block close to the cross groove.

[0013] Optionally, the clamping assembly further comprises connecting rods fixedly mounted on both sides of the base, a movable rod is hingedly connected to one side of the connecting rod away from the base, and the other end of the movable rod is hingedly connected to the bottom end of the slide plate.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] The utility model realizes that when a screwdriver is inserted into a cross slot, the screwdriver is clamped by the clamping block through the clamping block, the slide plate, the slide bar, the first spring, the second spring, the base, the fixed column, the limit block, the connecting rod and the movable rod, so that the screwdriver is in a vertical state, and then force is applied to the screwdriver, thereby avoiding the phenomenon of self-tapping screws slipping due to the screwdriver applying force to the side wall of the cross slot so that the cross slot is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Provide the overall structural diagram of the utility model;

[0017] Figure 2 A schematic diagram of the front cross-sectional structure of the utility model is given;

[0018] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Figure numerals: 1. nut; 2. screw; 3. cross slot; 4. clamping block; 5. rubber pad; 6. first rectangular slot; 7. second rectangular slot; 8. connecting rod; 9. movable rod; 10. slide plate; 11. slide bar; 12. first spring; 13. base; 14. slide groove; 15. limiting ring; 16. second spring; 17. fixing column; 18. rectangular hole; 19. mounting groove. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0022] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] It should be noted that the terms "include", "comprises" 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. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example

[0027] like Figure 1-3As shown, the utility model proposes a self-tapping screw with anti-slip wire, including a nut 1 and a screw 2, wherein the screw 2 is fixedly connected to the bottom of the nut 1, and also includes a cross slot 3 opened on the top of the nut 1, and an installation slot 19 is opened at the bottom of the cross slot 3, and a base 13 is slidably installed in the installation slot 19.

[0028] Among them, a conical groove is opened on the top of the base 13, and the conical groove is used to place the screwdriver. Two groups of fixed columns 17 are fixedly installed at the bottom of the installation groove 19. Slide grooves 14 for the fixed columns 17 to slide are opened on both sides of the bottom of the base 13. When force is applied to the screwdriver, the base 13 moves downward, and at this time the base 13 slides on the fixed columns 17.

[0029] In addition, a limiting ring 15 is fixedly installed at one end of the fixing column 17 located in the slide groove 14. The limiting ring 15 is used to limit the base 13 to prevent the base 13 from detaching from the fixing column 17. A fixing ring is fixedly installed at one end of the slide groove 14 away from the base 13. A second spring 16 is fixedly connected between the bottom of the installation groove 19 and the base 13. The second spring 16 is sleeved on the outside of the fixing column 17. After use, pull out the screwdriver, and under the action of the second spring 16, the base 13 is reset.

[0030] In this embodiment, the clamping assembly includes a first rectangular groove 6 and a second rectangular groove 7 opened in the nut 1, the first rectangular groove 6 is connected to the second rectangular groove 7, and the first rectangular groove 6 is connected to the cross groove 3. The clamping assembly also includes a sliding rod 11 fixedly installed in the second rectangular groove 7, a sliding plate 10 is slidably sleeved on the sliding rod 11, a clamping block 4 is fixedly installed on the top of the sliding plate 10, and a rectangular hole 18 is opened on the top of the nut 1 for the sliding plate 10 to slide. When the sliding plate 10 slides on the sliding rod 11, the clamping block 4 fixedly installed on the top of the sliding plate 10 moves toward the direction close to the cross groove 3, so that the clamping block 4 clamps and fixes the screwdriver in the cross groove 3, so that the screwdriver is applied with force in a vertical state.

[0031] Among them, the clamping assembly also includes a first spring 12 fixedly connected between the slide plate 10 and the second rectangular groove 7, the first spring 12 is sleeved on the outside of the slide rod 11, and a rubber pad 5 is fixedly installed on the side of the clamping block 4 close to the cross groove 3. The rubber pad 5 is used to increase the friction between the clamping block 4 and the screwdriver, thereby improving the clamping force of the clamping block 4 on the screwdriver.

[0032] Finally, the clamping assembly also includes a connecting rod 8 fixedly installed on both sides of the base 13. A movable rod 9 is hinged on one side of the connecting rod 8 away from the base 13. The other end of the movable rod 9 is hinged to the bottom end of the slide 10. When the base 13 moves downward, the connecting rod 8 is also driven to move downward, so that the movable rod 9 hinged at one end of the connecting rod 8 swings, thereby driving the slide 10 hinged to the other end of the movable rod 9 to slide on the slide rod 11.

[0033] The screwdriver is first inserted into the cross slot 3, so that the bottom of the screwdriver enters the conical groove at the top of the base 13, and force is applied to the screwdriver to make the base 13 move downward. At this time, the base 13 slides on the fixing column 17, and the base 13 moves downward, so that the connecting rod 8 fixedly installed on both sides of the base 13 also moves downward, so that the movable rod 9 hinged at one end of the connecting rod 8 swings, thereby driving the slide plate 10 hinged to the other end of the movable rod 9 to slide on the slide bar 11, so that the clamping block 4 fixedly installed on the top of the slide plate 10 moves in the direction close to the cross slot 3, so that the clamping block 4 clamps and fixes the screwdriver in the cross slot 3, so that the screwdriver applies force in a vertical state. After use, the screwdriver is pulled out, and the base 13 is reset under the action of the second spring 16, so that the clamping block 4 moves in the direction away from the cross slot 3, realizing automatic reset. The device avoids the screwdriver applying force to the side wall of the cross slot 3, causing the cross slot 3 to be worn, thereby causing the self-tapping screw to slip.

[0034] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A self-tapping screw with an anti-slip thread, comprising a nut (1) and a screw (2), wherein the screw (2) is fixedly connected to the bottom of the nut (1), characterized in that: Also includes: A cross groove (3) is provided on the top of the nut (1), a mounting groove (19) is provided at the bottom of the cross groove (3), and a base (13) is slidably installed in the mounting groove (19); A clamping assembly, the clamping assembly comprising a first rectangular groove (6) and a second rectangular groove (7) opened in the nut (1).

2. The self-tapping screw with anti-slip wire according to claim 1, characterized in that: A conical groove is provided at the top of the base (13), two groups of fixing columns (17) are fixedly installed at the bottom of the installation groove (19), and sliding grooves (14) for the fixing columns (17) to slide are provided on both sides of the bottom of the base (13).

3. The self-tapping screw with anti-slip wire according to claim 2, characterized in that: The first rectangular groove (6) is connected to the second rectangular groove (7), and the first rectangular groove (6) is connected to the cross groove (3).

4. The self-tapping screw with anti-slip wire according to claim 3, characterized in that: A limiting ring (15) is fixedly installed on one end of the fixing column (17) located in the slide groove (14), and a fixing ring is fixedly installed on one end of the slide groove (14) away from the base (13). A second spring (16) is fixedly connected between the bottom of the installation groove (19) and the base (13), and the second spring (16) is sleeved on the outside of the fixing column (17).

5. The self-tapping screw with anti-slip wire according to claim 2, characterized in that: The clamping assembly also includes a sliding rod (11) fixedly installed in the second rectangular groove (7), a sliding plate (10) is slidably sleeved on the sliding rod (11), a clamping block (4) is fixedly installed on the top of the sliding plate (10), and a rectangular hole (18) is opened on the top of the nut (1) for the sliding plate (10) to slide.

6. The self-tapping screw with anti-slip wire according to claim 5, characterized in that: The clamping assembly also includes a first spring (12) fixedly connected between the slide plate (10) and the second rectangular groove (7), the first spring (12) being sleeved on the outside of the slide bar (11), and a rubber pad (5) being fixedly installed on one side of the clamping block (4) close to the cross groove (3).

7. The self-tapping screw with anti-slip wire according to claim 6, characterized in that: The clamping assembly also includes connecting rods (8) fixedly mounted on both sides of the base (13), and a movable rod (9) is hingedly connected to one side of the connecting rod (8) away from the base (13), and the other end of the movable rod (9) is hingedly connected to the bottom end of the slide plate (10).

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