Wooden screw not prone to being twisted off

Abstract

The utility model discloses a wood screw not easy to twist off, which comprises a screw main body, a guide post, a guide hole, a mounting groove and a gasket, the bottom end of the guide post is provided with the mounting groove, the groove bottom of the mounting groove is provided with the guide hole, the guide hole vertically and upwards penetrates to the upper end face of the guide post, the inner wall of the guide hole is provided with a raised internal thread, and the gasket is arranged on the inner wall of the guide hole. A gasket is placed in the installation groove and matched with the installation groove, a plurality of spikes are arranged at the bottom of the gasket, an avoiding hole is formed in the gasket, the screw body is located in the guide hole and composed of a head portion and a rod portion which are connected, and external threads matched with the internal threads are arranged on the outer side wall of the head portion. And the head part is screwed in the guide hole. According to the wood screw, the head of the screw body is screwed into the guide hole, so that the screw body can be guided when being screwed into wood at the beginning, the screw body is not prone to deflection when screwed, and the using effect of the wood screw is guaranteed.

Description

[Technical field]

[0001] The utility model relates to the technical field of fasteners, in particular to the technical field of wood screws. [Background technology]

[0002] Wood screws usually have a self-tapping function and are usually screwed directly into the wood. Since holes are not drilled in the wood before use, they are prone to deflection during the screwing process, especially for longer wood screws. When wood screws deflect, they may become stuck, the connection effect may deteriorate, the end of the screw may push out the side wall of the wood, or even drill through the side wall of the wood. Once the above situation occurs, rework is required, which deteriorates the use effect of the wood screw. [Utility Model Content]

[0003] The utility model aims to solve the problems in the prior art and provides a wood screw that is not easy to be screwed off, so that the wood screw is not easy to be screwed off when being tightened, thereby ensuring the use effect of the wood screw.

[0004] To achieve the above-mentioned purpose, the utility model proposes a wood screw that is not easy to be screwed off track, including a screw body, a guide column, a guide hole, a mounting groove, and a gasket. The bottom end of the guide column is provided with a mounting groove, the bottom of the mounting groove is provided with a guide hole, the guide hole vertically penetrates upward to the upper end surface of the guide column, the inner wall of the guide hole is provided with a raised internal thread, a gasket is placed in the mounting groove, the gasket is adapted to the mounting groove, a plurality of spikes are provided at the bottom of the gasket, an avoidance hole is provided on the gasket, the screw body is located inside the guide hole, the screw body is composed of a connected head and a rod, an outer wall of the head is provided with an external thread matching the internal thread, the head is screwed inside the guide hole, the screw body, the guide hole, and the avoidance hole are located on the same vertical central axis, the inner diameter of the avoidance hole is larger than the outer diameter of the rod, and the inner diameter of the avoidance hole is smaller than the outer diameter of the head.

[0005] Preferably, the internal thread is located at the upper part of the guide hole.

[0006] Preferably, the thickness of the gasket is greater than or equal to the depth of the mounting groove.

[0007] Preferably, a plurality of limiting convex strips are provided on the inner wall of the installation groove, and a limiting groove corresponding to the limiting convex strips is provided on the gasket, and the limiting convex strips are embedded in the limiting grooves.

[0008] The beneficial effects of the utility model are as follows: the utility model screws the head of the screw body into the guide hole so that the screw body can be guided when it is first screwed into the wood, making it less likely to deflect when screwing, thereby ensuring the use effect of the wood screw; the setting of the gasket enables the guide column to be conveniently fixed on the wood surface.

[0009] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0010] Figure 1 The utility model is a front view of the first embodiment of the wood screw which is not easy to be screwed off.

[0011] Figure 2 This is a bottom view of the second embodiment of the utility model of the wood screw which is not easy to be screwed off;

[0012] In the figure: 1-guide column, 2-screw body, 10-internal thread, 11-guide hole, 12-mounting groove, 13-gasket, 14-avoidance hole, 15-spike, 16-limiting convex strip, 17-limiting groove, 20-external thread, 21-head, 22-rod. [Specific implementation method]

[0013] Embodiment 1:

[0014] See also Figure 1 The utility model is a wood screw that is not easy to be screwed off, comprising a screw body 2, a guide column 1, a guide hole 11, a mounting groove 12, and a gasket 13. The bottom end of the guide column 1 is provided with a mounting groove 12, the bottom of the mounting groove 12 is provided with a guide hole 11, the guide hole 11 vertically penetrates upward to the upper end surface of the guide column 1, the inner wall of the guide hole 11 is provided with a raised internal thread 10, a gasket 13 is placed in the mounting groove 12, the gasket 13 is adapted to the mounting groove 12, and the bottom of the gasket 13 is provided with a plurality of spikes 15 A avoidance hole 14 is provided on the gasket 13, the screw body 2 is located inside the guide hole 11, the screw body 2 is composed of a head 21 and a rod 22 connected to each other, an outer wall of the head 21 is provided with an outer thread 20 matching the inner thread 10, the head 21 is screwed into the inside of the guide hole 11, the screw body 2, the guide hole 11, and the avoidance hole 14 are located on the same vertical central axis, the inner diameter of the avoidance hole 14 is larger than the outer diameter of the rod 22, the inner diameter of the avoidance hole 14 is smaller than the outer diameter of the head 21, and the head 21 is provided with a screwing groove.

[0015] The internal thread 10 is located at the upper part of the guide hole 11, and the length of the area without the internal thread 10 in the guide hole 11 is 1 / 2-2 / 3 of the length of the rod 22 of the screw body 2.

[0016] The thickness of the gasket 13 is greater than or equal to the depth of the mounting groove 12 .

[0017] Embodiment 2:

[0018] See also Figure 2In order to prevent the gasket 13 from rotating during the screwing process of the screw body 2, a plurality of limiting ridges 16 are provided on the inner wall of the mounting groove 12, and a limiting groove 17 corresponding to the limiting ridges 16 is provided on the gasket 13, and the limiting ridges 16 are embedded in the limiting grooves 17.

[0019] Working process of this utility model:

[0020] During the working process of the wood screw which is not easy to be screwed off, a suitable guide column 2 is selected, and the head 21 of the screw body 2 is screwed into the guide hole 11 of the guide column 1. It is necessary to ensure that the screw body 2 is completely located inside the guide column 1, and then the gasket 13 is inserted into the mounting groove 12 of the guide column 1, and then the guide column 1 is pressed on the surface of the wood in a posture perpendicular to the surface of the wood. At this time, the spike 15 penetrates into the wood, and then the head 21 of the screw body 2 is screwed with a tool. The screw body 2 will be vertically screwed into the wood under the guidance of the guide hole 11 until the screw body 2 is tightened, and then the guide column 2 is removed to complete the screwing of the screw body 2.

[0021] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A wood screw that is not easy to screw off, characterized by: The invention comprises a screw body (2), a guide column (1), a guide hole (11), a mounting groove (12), and a gasket (13). The guide column (1) has a mounting groove (12) at its bottom end, a guide hole (11) is provided at the bottom of the mounting groove (12), the guide hole (11) vertically penetrates upward to the upper end surface of the guide column (1), a raised internal thread (10) is provided on the inner wall of the guide hole (11), a gasket (13) is placed in the mounting groove (12), the gasket (13) is adapted to the mounting groove (12), a plurality of spikes (15) are provided at the bottom of the gasket (13), and the gasket (13) is provided with a plurality of spikes (15). The sheet (13) is provided with an avoidance hole (14), the screw body (2) is located inside the guide hole (11), the screw body (2) is composed of a head (21) and a rod (22) connected to each other, an outer wall of the head (21) is provided with an outer thread (20) matching with the inner thread (10), the head (21) is screwed into the guide hole (11), the screw body (2), the guide hole (11) and the avoidance hole (14) are located on the same vertical central axis, the inner diameter of the avoidance hole (14) is larger than the outer diameter of the rod (22), and the inner diameter of the avoidance hole (14) is smaller than the outer diameter of the head (21).

2. The wood screw that is not easy to deflect as claimed in claim 1, characterized in that: The internal thread (10) is located at the upper part of the guide hole (11).

3. The wood screw that is not easy to screw off as claimed in claim 1, characterized in that: The thickness of the gasket (13) is greater than or equal to the depth of the mounting groove (12).

4. The wood screw that is not easy to screw off as claimed in claim 1, characterized in that: A plurality of limiting convex strips (16) are provided on the inner wall of the installation groove (12), and limiting grooves (17) corresponding to the limiting convex strips (16) are provided on the gasket (13), and the limiting convex strips (16) are embedded in the limiting grooves (17).

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