Anti-deviation structure of self-tapping screw

Abstract

The utility model relates to the field of screw deviation prevention, and discloses a self-tapping screw deviation prevention structure which comprises a pressing ring, the top of the pressing ring is fixedly connected with a guide rod, the top of the guide rod is fixedly connected with a fixing ring, the top of the pressing ring is provided with a moving mechanism, and the moving mechanism comprises a moving ring. The movable ring is slidably mounted on the circumferential surface of the guide rod, a mounting mechanism is arranged in the movable ring and comprises a mounting block, the outer wall of the mounting block is fixedly connected with the inner wall of the movable ring through a connecting rod, a sliding groove is formed in the mounting block, and a sliding block is slidably connected to the inner wall of the sliding groove. According to the self-tapping screw mounting device, through the arrangement of the mounting mechanism, self-tapping screws of different models, sizes and sizes can be mounted, the mounting mechanism is matched with the moving mechanism for mounting, the self-tapping screws are prevented from deviating in the mounting process, a corresponding anti-deviation mechanism does not need to be replaced, material consumption and use cost are reduced, and adaptability is good.

Description

Technical Field

[0001] The utility model relates to the field of screw anti-offset, in particular to an anti-offset structure for self-tapping screws. Background Technique

[0002] A self-tapping screw is a screw with a special design. Its main feature is that it can form or cut threads by itself during the installation process, without the need to drill holes or add nuts in the workpiece in advance. This characteristic makes the self-tapping screw have obvious advantages in installation efficiency and convenience. However, if the rotation force of the staff is uneven or the applied angle is incorrect, it may cause the screw to tilt or offset when entering the wall or workpiece.

[0003] After retrieval, Chinese Patent Publication No.: CN219994121U discloses an anti-offset structure for self-tapping screws, including a screw head and a drilling rod. A groove is opened at the top of the screw head, a screw column is fixedly installed at the bottom of the screw head, an upper gasket is placed at the bottom of the screw head, a lower gasket is placed at the bottom of the upper gasket, a nut is movably installed at the bottom of the lower gasket, and a drilling head is fixedly installed at the bottom of the drilling rod. This patent fixes the self-tapping screw between the fixing rods, so that the offset of the self-tapping screw can be minimized during torsion. However, there are various models of self-tapping screws, and the sizes and diameters of different models of self-tapping screws are not the same. Although the existing anti-offset structure can avoid the offset of the self-tapping screw during installation, when installing other models of self-tapping screws, it is necessary to replace the compatible anti-offset structure, which leads to an increase in material consumption and the cost of use, and the adaptability is not high. Therefore, an anti-offset structure for self-tapping screws is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides an anti-offset structure for self-tapping screws, aiming to improve the problem of "the increase in material consumption and the cost of use caused by the need to replace the compatible anti-offset structure" in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical solution: A self-tapping screw anti-offset structure, including a pressure ring, a guide rod is fixedly connected to the top of the pressure ring, a fixed ring is fixedly connected to the top of the guide rod, a moving mechanism is arranged on the top of the pressure ring, the moving mechanism includes a moving ring, the moving ring is slidably installed on the circumferential surface of the guide rod, an installation mechanism is arranged inside the moving ring, the installation mechanism includes an installation block, the installation block is rotatably installed on the inner wall of the moving ring, a chute is opened inside the installation block, a slider is slidably connected to the inner wall of the chute, a moving block is slidably connected to the inner wall of the slider, the number of the moving blocks is set to be multiple, a clamping plate is fixedly connected to one side of the multiple moving blocks close to each other, a first threaded rod is fixedly connected to one side of the multiple moving blocks away from each other, a nut block is threadedly connected to the circumferential surface of the first threaded rod, and the surface of the nut block is rotatably connected to the outer wall of the installation block.

[0006] As a further description of the above technical solution:

[0007] A pressing plate is fixedly connected to the outer wall of the pressure ring, a through groove is opened at the bottom of the installation block, and a self-tapping screw is arranged inside the through groove.

[0008] As a further description of the above technical solution:

[0009] The central axis of the installation block and the central axis of the moving ring are on the same straight line.

[0010] As a further description of the above technical solution:

[0011] The number of the sliders is set to be multiple, and the multiple sliders are arranged at equal angular intervals in a ring inside the installation block.

[0012] As a further description of the above technical solution:

[0013] The first threaded rod penetrates through the installation block and does not contact the installation block.

[0014] As a further description of the above technical solution:

[0015] The moving mechanism further includes a spring, the bottom of the spring is fixedly connected to the top of the pressure ring, the top of the spring is fixedly connected to the bottom of the moving ring, and the spring is sleeved on the outer wall of the guide rod.

[0016] As a further description of the above technical solution:

[0017] The number of the guide rods is set to be multiple, and the multiple guide rods are arranged at equal angular intervals in a ring on the top of the pressure ring.

[0018] As a further description of the above technical solution:

[0019] The installation mechanism further includes a knob, the bottom of the knob is fixedly connected with a second threaded rod, the second threaded rod is threadedly installed on the inner wall of the installation block, and the bottom of the second threaded rod is rotatably connected to the top of the slider.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by setting the installation mechanism, self-tapping screws of different models, sizes and dimensions can be installed. Cooperating with the moving mechanism for installation, it can avoid the deviation of self-tapping screws during the installation process, and there is no need to replace the corresponding anti-deviation mechanism, reducing material consumption and usage costs, and having good adaptability.

[0022] 2. In the utility model, by setting a plurality of guide rods to cooperate with the clamping plate to fix the fiber of the self-tapping screw, it can ensure that the self-tapping screw will not deviate during the process of rotating into the wall or workpiece, improving the installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a top view schematic diagram of the overall three-dimensional structure in the utility model;

[0024] Figure 2 It is a bottom view schematic diagram of the overall three-dimensional exploded structure in the utility model;

[0025] Figure 3 It is a schematic sectional view of the three-dimensional structure of the installation mechanism in the utility model;

[0026] Figure 4 It is a schematic sectional view of the three-dimensional structure of the slider, moving block, clamping plate, first threaded rod, and nut block in the utility model;

[0027] Figure 5 It is a schematic three-dimensional structure diagram of the moving block and the clamping plate in the utility model.

[0028] Legend Explanation:

[0029] 1. Pressure ring; 2. Pressure plate; 3. Guide rod; 4. Fixed ring; 5. Moving ring; 6. Spring; 8. Installation block; 9. Slider; 10. Chute; 11. Moving block; 12. Clamping plate; 13. First threaded rod; 14. Nut block; 15. Knob; 16. Second threaded rod; 17. Through groove; 18. Self-tapping screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Referring to Figure 1 and Figure 2 , an embodiment provided by the present invention: a self-tapping screw anti-offset structure, including a pressing ring 1. A guide rod 3 in the shape of a cylinder is fixedly connected to the top of the pressing ring 1. The number of the guide rods 3 is set to be multiple, and the multiple guide rods 3 are arranged at equal angular intervals in a ring shape on the top of the pressing ring 1 to improve the connection stability between the pressing ring 1 and the fixing ring 4. Moreover, the guide rod 3 can guide the displacement direction of the self-tapping screw 18 when it rotates into the wall, avoiding deviation. A fixing ring 4 is fixedly connected to the top of the guide rod 3. The central axis of the fixing ring 4 coincides with the central axis of the pressing ring 1. A moving mechanism is arranged on the top of the pressing ring 1. The moving mechanism includes a moving ring 5. The moving ring 5 is slidably installed on the circumferential surface of the guide rod 3. The displacement direction of the moving ring 5 is the axial direction of the guide rod 3. The inner diameter of the fixing ring 4 is larger than the inner diameter of the moving ring 5. There is no contact between the fixing ring 4 and the surface of the mounting block 8. An installation mechanism is arranged inside the moving ring 5.

[0032] Referring to Figure 2 - Figure 5 , the installation mechanism includes a mounting block 8. The mounting block 8 is rotatably installed on the inner wall of the moving ring 5. A chute 10 matching with a slider 9 is opened inside the mounting block 8. A slider 9 is slidably connected to the inner wall of the chute 10. The sliding direction of the slider 9 is upward sliding. A moving block 11 is slidably connected to the inner wall of the slider 9. The displacement direction of the moving block 11 is the radial direction of the mounting block 8. The number of the moving blocks 11 is set to be multiple, and the multiple moving blocks 11 are arranged at equal angular intervals in a ring shape inside the mounting block 8. On one side where the multiple moving blocks 11 are close to each other, a clamping plate 12 for limiting the self-tapping screw 18 is fixedly connected. The number of the clamping plates 12 is set to be multiple. Grooves are opened on one side where the multiple clamping plates 12 are close to each other, which is convenient for limiting and fixing the self-tapping screw 18. On one side where the multiple moving blocks 11 are far from each other, a first threaded rod 13 is fixedly connected. The first threaded rod 13 penetrates through the mounting block 8 and does not contact the mounting block 8. A nut block 14 is threadedly connected to the circumferential surface of the first threaded rod 13. The surface of the nut block 14 is rotatably connected to the outer wall of the mounting block 8. The nut block 14 rotates the first threaded rod 13 to displace in the radial direction of the mounting block 8.

[0033] Referring to Figure 1 - Figure 3, a pressing plate 2 for increasing the contact area with the wall is fixedly connected to the outer wall of the pressing ring 1, which can improve the stability of the pressing ring 1 during installation, thereby avoiding the deviation of the self-tapping screw 18 when it rotates into the wall. A through groove 17 is opened at the bottom of the mounting block 8, and the inner diameter of the through groove 17 is larger than the overall size of the self-tapping screw 18 to facilitate the self-tapping screw 18 to pass through the through groove 17. The self-tapping screw 18 is arranged inside the through groove 17. The central axis of the mounting block 8 and the central axis of the moving ring 5 are on the same straight line. The number of the sliders 9 is set to be multiple, and the multiple sliders 9 are arranged at equal angular intervals in a ring shape inside the mounting block 8 to improve the stability of the limit fixation of the self-tapping screw 18.

[0034] Refer to Figure 1 , Figure 2 , the moving mechanism further includes a spring 6. The bottom of the spring 6 is fixedly connected to the top of the pressing ring 1, and the top of the spring 6 is fixedly connected to the bottom of the moving ring 5. By providing the spring 6, an upward elastic force is applied to the moving ring 5. The spring 6 is sleeved on the outer wall of the guide rod 3.

[0035] Refer to Figure 3 , the installation mechanism further includes a knob 15. Anti-slip key patterns are provided on the circumferential surface of the knob 15 to increase the friction between the palm and the knob 15, reduce the possibility of slipping, and facilitate labor saving. A second threaded rod 16 arranged vertically is fixedly connected to the bottom of the knob 15. The second threaded rod 16 is threadedly installed on the inner wall of the mounting block 8, and the bottom of the second threaded rod 16 is rotatably connected to the top of the slider 9.

[0036] Working principle: During use, the self-tapping screw 18 is passed through the through groove 17 and placed inside the mounting block 8. Then, the nut block 14 is rotated. The rotation of the nut block 14 causes the first threaded rod 13 to displace in the radial direction of the mounting block 8 through the conversion of the thread. The displacement of the first threaded rod 13 drives the moving block 11 to displace. The displacement of the moving block 11 drives the clamping plate 12 to displace towards the center of the mounting block 8, so that the multiple clamping plates 12 approach each other, and the self-tapping screw 18 is fixedly clamped through the grooves of the clamping plate 12. Then, the knob 15 is rotated. The rotation of the knob 15 causes the second threaded rod 16 to rotate. The rotation of the second threaded rod 16 drives the slider 9 to displace up and down through the conversion of the thread. The displacement of the slider 9 drives the moving block 11 and the clamping plate 12 to displace up and down, thereby adjusting the position of the bottom of the self-tapping screw 18 inside the through groove 17, improving the positioning accuracy, and facilitating subsequent installation.

[0037] When it is necessary to install the self-tapping screw 18, place the pressing ring 1 on the wall surface, and then hold the pressing plate 2 by hand to prevent the pressing ring 1 from displacing or falling. Then, tighten the self-tapping screw 18 by manual screwing or with the aid of a screw machine. During the rotation of the self-tapping screw 18, the moving ring 5 will be driven to displace in the axial direction of the guide rod 3. The guide rod 3 can guide the displacement directions of the moving ring 5 and the self-tapping screw 18, enabling the self-tapping screw 18 to perform a more precise linear motion, preventing the self-tapping screw 18 from displacing during installation, and improving the installation accuracy.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-tapping screw anti-deviation structure, comprising a pressure ring (1), characterized in that: The top of the pressure ring (1) is fixedly connected to a guide rod (3), the top of the guide rod (3) is fixedly connected to a fixed ring (4), the top of the pressure ring (1) is provided with a moving mechanism, the moving mechanism comprises a moving ring (5), the moving ring (5) is slidably mounted on the circumferential surface of the guide rod (3), the interior of the moving ring (5) is provided with a mounting mechanism, the mounting mechanism comprises a mounting block (8), the mounting block (8) is rotatably mounted on the inner wall of the moving ring (5), a sliding groove (10) is provided inside the mounting block (8), and the A slider (9) is slidably connected to the inner wall of the slide groove (10), and a moving block (11) is slidably connected to the inner wall of the slider (9). The number of the moving blocks (11) is set to be multiple, and a clamping plate (12) is fixedly connected to the side where the multiple moving blocks (11) are close to each other, and a threaded rod (13) is fixedly connected to the side where the multiple moving blocks (11) are away from each other. The circumferential surface of the threaded rod (13) is threadedly connected to a nut block (14), and the surface of the nut block (14) is rotatably connected to the outer wall of the mounting block (8).

2. A self-tapping screw anti-deviation structure according to claim 1, characterized in that: The outer wall of the pressure ring (1) is fixedly connected to a pressure plate (2), a through slot (17) is provided at the bottom of the mounting block (8), and a self-tapping screw (18) is provided inside the through slot (17).

3. The self-tapping screw anti-deviation structure according to claim 1, characterized in that: The central axis of the mounting block (8) and the central axis of the moving ring (5) are on the same straight line.

4. The self-tapping screw anti-deviation structure according to claim 1, characterized in that: The number of the sliding blocks (9) is set to be multiple, and the multiple sliding blocks (9) are arranged in a ring shape at equal angles inside the mounting block (8).

5. The self-tapping screw anti-deviation structure according to claim 1, characterized in that: The threaded rod (13) passes through the mounting block (8) and does not contact the mounting block (8).

6. The self-tapping screw anti-deviation structure according to claim 1, characterized in that: The moving mechanism also includes a spring (6), the bottom of the spring (6) is fixedly connected to the top of the pressure ring (1), the top of the spring (6) is fixedly connected to the bottom of the moving ring (5), and the spring (6) is sleeved on the outer wall of the guide rod (3).

7. The self-tapping screw anti-deviation structure according to claim 1, characterized in that: The number of the guide rods (3) is set to be multiple, and the multiple guide rods (3) are arranged in a ring shape at equal angles on the top of the pressure ring (1).

8. The self-tapping screw anti-deviation structure according to claim 1, characterized in that: The mounting mechanism further comprises a knob (15), the bottom of which is fixedly connected to a second threaded rod (16), the second threaded rod (16) being threadedly mounted on the inner wall of the mounting block (8), the bottom of the second threaded rod (16) being rotatably connected to the top of the slider (9).

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