Stop screw

Abstract

The utility model discloses a stop screw, belongs to the technical field of fasteners, and solves the problems that in order to ensure the mounting efficiency and the firmness of the stop screw, constructors often adopt an electric drill gun to complete the fixing action of loosening and setting, but the situation that the electric drill gun and a screw head of the stop screw are likely to be slipped in the process, so that the safety of the constructors is influenced. And when the anti-loosening screw needs to be unscrewed, the anti-loosening screw possibly gets stuck and is difficult to leave. Comprising a lower screw head, a stud fixedly connected with the lower screw head and an upper screw head detachably connected with the lower screw head, and a lower cross groove and an upper cross groove are formed in the lower screw head and the upper screw head respectively. When connected with a wood structure, the double-screw bolt can be in threaded connection with a wood block and the like, the lower screw head abuts against the end face and rotates to enable the insertion block spikes to be inserted into the wood block, and the meshing effect is enhanced. A constructor manually sleeves the protective sleeve, and the plug pin is inserted into the wood block to prevent separation. If an electric drill gun scratches a cross groove of the upper screw head to cause screw slipping, a screwdriver can be inserted to turn over and take down the upper screw head to facilitate screw withdrawing.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to an anti-loosening screw. Background Technology

[0002] A screw is a mechanical part used for fastening connections, typically consisting of a head and a shank with external threads. Heads come in various shapes, such as flat, round, and hexagonal, and thread specifications vary. Screws, by mating with a nut or threaded hole, can tightly connect two or more parts together. Depending on the material and application, there are stainless steel screws, carbon steel screws, self-tapping screws, etc. They are widely used in machinery, electronics, construction, automotive, and other fields for fixing and assembling various equipment and structures. During installation, appropriate tools (such as screwdrivers and wrenches) are required to tighten them to achieve a reliable connection.

[0003] Currently, anti-loosening screws are often installed using a flathead or Phillips screwdriver. However, to ensure installation efficiency and firmness, workers often use an electric drill to loosen and secure the screws. In this process, the drill may strip the screw head, causing the screw to become stuck and difficult to remove when it needs to be unscrewed.

[0004] Therefore, an anti-loosening screw is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-loosening screw.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An anti-loosening screw includes a lower screw head, a stud fixedly connected to the lower screw head, and an upper screw head detachably connected to the lower screw head. The lower screw head and the upper screw head are respectively provided with a lower cross groove and an upper cross groove, and the upper screw head is provided to cover the lower cross groove.

[0008] Preferably, the bottom surface of the upper screw head is fixedly connected to a cross insert that can be embedded in the lower cross groove.

[0009] Preferably, the top surface of the lower screw head has a downwardly recessed groove, and the bottom surface of the upper screw head is fixedly connected with a post that can be embedded in the groove.

[0010] Preferably, each of the four ends of the cross-shaped insert is fixedly connected to two sealing blocks, which have elastic deformation properties, and the two sealing blocks at the ends of the cross-shaped insert have guide slopes on the side facing each other.

[0011] Preferably, both the upper and lower screw heads have anti-slip grooves on their outer rings.

[0012] Preferably, the bottom surface of the lower screw head is fixedly connected to a plurality of insert blocks arranged in a ring array on the outer ring of the stud. The insert blocks are in the shape of a four-sided pyramid, and a spike is fixedly connected to the end of the insert block away from the lower screw head. A connecting slope exists on the side of the insert block away from the lower screw head.

[0013] Preferably, it also includes a protective sleeve, which can be fitted onto the outside of the upper and lower screw heads, and the bottom opening of the protective sleeve is fixedly connected with a pin.

[0014] Preferably, the outer ring of the protective sleeve has an inwardly recessed connecting ring groove.

[0015] This utility model has the following beneficial effects:

[0016] When connected to wooden structures, this invention allows the stud to be threaded onto wooden blocks. The lower screw head contacts the end face and rotates, causing the spiked insert to penetrate the wooden block, enhancing the engagement. Construction workers manually put on a protective sleeve, which inserts the stud into the wooden block to prevent detachment. If the drill bit scratches the Phillips head groove, causing stripping, a screwdriver can be inserted to pry off the upper screw head for easy unscrewing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 For the explosion of this utility model Figure 1 ;

[0021] Figure 4 For the explosion of this utility model Figure 2 .

[0022] In the diagram: 1. Lower screw head; 2. Stud; 3. Lower Phillips head groove; 4. Insert groove; 5. Upper screw head; 6. Upper Phillips head groove; 7. Phillips insert; 8. Sealing block; 9. Guide bevel; 10. Insert post; 11. Protective sleeve; 12. Connecting ring groove; 13. Insert pin; 14. Insert block; 15. Spike; 16. Connecting bevel. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] A type of anti-loosening screw, such as Figures 1 to 3As shown, it includes a lower screw head 1, a stud 2 fixedly connected to the lower screw head 1, and an upper screw head 5 detachably connected to the lower screw head 1. The outer rings of the upper screw head 5 and the lower screw head 1 are provided with anti-slip textures. The lower screw head 1 and the upper screw head 5 are respectively provided with a lower cross groove 3 and an upper cross groove 6. The upper screw head 5 is provided to cover the lower cross groove 3. The bottom surface of the upper screw head 5 is fixedly connected with a cross insert 7 that can be embedded in the lower cross groove 3. The top surface of the lower screw head 1 is provided with a downwardly recessed groove 4. The bottom surface of the upper screw head 5 is fixedly connected with a stud 10 that can be embedded in the groove 4. Two sealing blocks 8 are fixedly connected to each of the four ends of the cross insert 7. The sealing blocks 8 have elastic deformation properties. The two sealing blocks 8 located at the ends of the cross insert 7 are provided with guide slopes 9 on the side facing each other.

[0030] The bottom surface of the lower screw head 1 is fixedly connected to a number of insert blocks 14 arranged in a ring array on the outer ring of the stud 2. The insert blocks 14 are in the shape of a four-sided pyramid, and a spike 15 is fixedly connected to the end of the insert block 14 away from the lower screw head 1. A connecting slope 16 exists on the side of the insert block 14 away from the lower screw head 1.

[0031] It also includes a protective sleeve 11, which can be fitted onto the outside of the upper screw head 5 and the lower screw head 1. The bottom opening of the protective sleeve 11 is fixedly connected with a pin 13, and the outer ring of the protective sleeve 11 has an inwardly recessed connecting ring groove 12.

[0032] When this invention is used to connect with wooden structures, the stud 2 can be threaded into a wooden structure such as a wooden block. After the stud 2 is completely inserted into the wooden structure, the bottom surface of the lower screw head 1 abuts against the end face of the wooden structure. As the stud 2 drives the lower screw head 1 to rotate, the insert 14 on the lower screw head 1 rotates spirally, and the spikes 15 on the insert 14 can insert into the wooden structure, thereby enhancing the interlocking effect when connecting with the wooden structure. Then, the construction worker only needs to manually place the protective sleeve 11 on the outside of the upper screw head 5 and the lower screw head 1 to protect them, thus preventing the screw head from easily loosening. Damage, and the insert 13 on the protective sleeve 11 can be inserted into wooden structures such as wooden blocks, making it difficult to detach. On the contrary, if it is necessary to remove the protective sleeve 11, it can be removed by inserting fingers or pliers into the connecting ring groove 12 to exert force. If the drill gun scratches the upper cross groove 6 on the upper screw head 5 and causes stripping during the connection of this anti-loosening screw, the operator can also insert a screwdriver between the two adjacent sealing blocks 8, and then pry the screwdriver up to lift the upper screw head 5, so that the insert 10 can be disengaged from the insert groove 4, and the cross insert 7 can be disengaged from the lower cross groove 3, thereby removing the upper screw head 5, exposing the lower screw head 1 and the lower cross groove 3 on the lower screw head 1, making it convenient for the drill gun to remove the threads on the anti-loosening screw.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 locking screw, characterized in that The utility model provides a screw head, including lower screw head (1), with lower screw head (1) fixed connection's stud (2) and with lower screw head (1) detachable connection's upper screw head (5), lower screw head (1) and upper screw head (5) are set up respectively with lower cross groove (3) and upper cross groove (6), upper screw head (5) shelter lower cross groove (3) setting.

2. A check screw according to claim 1, wherein The bottom surface of the upper screw head (5) is fixedly connected with a cross-shaped embedding block (7) that can be embedded in the lower cross groove (3).

3. A check screw according to claim 1 or 2, wherein The top surface of the lower screw head (1) is provided with a downwardly recessed embedding groove (4), and the bottom surface of the upper screw head (5) is fixedly connected with an embedding column (10) that can be embedded in the embedding groove (4).

4. A check screw according to claim 2, wherein The four ends of the cross-shaped embedding block (7) are fixedly connected with two sealing rubber blocks (8), the sealing rubber blocks (8) have elastic deformation performance, and the sides of the two sealing rubber blocks (8) located at the ends of the cross-shaped embedding block (7) and facing each other are provided with guide inclined surfaces (9).

5. A check screw as defined in claim 1, wherein The outer rings of the upper screw head (5) and the lower screw head (1) are provided with anti-skid lines.

6. A check screw as defined in claim 1, wherein The bottom surface of the lower screw head (1) is fixedly connected with a plurality of insertion blocks (14) arranged in an annular array outside the stud (2), the insertion blocks (14) are in the shape of a quadrangular pyramid, one end of the insertion blocks (14) away from the lower screw head (1) is fixedly connected with a sharp (15), and the side of the insertion blocks (14) away from the lower screw head (1) is provided with a connecting inclined surface (16).

7. A check screw as defined in claim 1, wherein The utility model also includes a protective sleeve (11), the protective sleeve (11) can be sleeved outside the upper screw head (5) and the lower screw head (1), and the bottom surface of the protective sleeve (11) is fixedly connected with an insertion nail (13) outside the annular opening.

8. A check screw according to claim 7, wherein The outer ring of the protective sleeve (11) is provided with an inwardly recessed connecting ring groove (12).

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