Split type self drilling screw

Abstract

The utility model provides a split type self drilling screw, which relates to the technical field of self drilling screws and comprises a screw rod, a screw head is fixedly mounted on the side face of the screw rod, a mounting block is fixedly mounted on the side face of the screw head, a sliding groove is formed in the inner side of the mounting block, a spring is arranged on the inner side of the screw rod, and an inclined block is connected to the inner side of the screw rod in a sliding manner. According to the screw, by arranging the mounting block, the sliding groove, the spring, the inclined block, the rod head, the toothed rod, the toothed plate and the sliding block, the effect of quickly disassembling and assembling the screw head and the screw rod can be achieved, when a machine needs to be maintained regularly, the screw head can be easily disassembled, the whole screw does not need to be disassembled, the maintenance work is more efficient, and the working efficiency is improved. Compared with the mode that the screw head and the screw rod are connected through threads, the connecting mode does not need to worry about the phenomenon of screw slipping caused by the fact that the screw head and the screw rod are disassembled and assembled for many times, and therefore the service life of the screw head and the screw rod is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of self-drilling screws, in particular to a split self-drilling screw. Background Art

[0002] A self-drilling screw is a specially designed screw because the design of its tail allows it to enter the base material on its own without drilling a hole in the base material first. The screw shaft and screw head of most screws cannot be removed, but when fixing thicker objects, longer self-drilling screws are often required, which makes removal very inconvenient.

[0003] Publication number CN210461340U discloses a split screw, which consists of a screw head and a screw rod. A cylindrical cavity structure is arranged on the inner side of the end of the screw head, the inner wall of the cylindrical cavity structure is an internal thread, and an inner bottom of the cylindrical cavity structure is arranged with an inward-recessed fastening opening; an external thread matching the internal thread of the cylindrical cavity structure is arranged on the outer side of the screw rod, and the screw rod can be screwed into the cylindrical cavity structure through the external thread cooperating with the internal thread of the cylindrical cavity structure to realize the connection and fixation of the screw head and the screw rod; the thread pitch of the outer side of the screw head is greater than the pitch of the internal thread of the inner wall of the cylindrical cavity structure and the external thread of the outer side of the screw rod. Although this type of split self-drilling screw is easy to install and disassemble, and can effectively prevent the screws from rusting or stripping, it still needs to use threads for installation when installing and separating the screw head and the screw rod. This causes wear during the installation and separation of the screw head and the screw rod, resulting in a short service life. When the number of disassembly and assembly increases, the threads will strip, resulting in an unstable connection between the screw head and the screw rod, which needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a split self-drilling screw, comprising a screw rod and a screw head, a mounting block is fixedly installed on the side of the screw head, a sliding groove is opened on the inner side of the mounting block, a spring is arranged on the inner side of the screw rod, an inclined block is slidably connected to the inner side of the screw rod, a rod head is rotatably connected to the inner side of the screw head, a toothed rod is fixedly installed on the side of the rod head, a toothed plate is meshed on the surface of the toothed rod, a sliding block is fixedly installed on the side of the toothed plate, and a pad is fixedly installed on the side of the screw head.

[0006] Preferably, the installation block is slidably connected to the screw rod, and the inclined block is slidably connected to the slide groove. Here, by providing the inclined block and the slide groove, a spring can be used to cooperate so that when the installation block enters the interior of the screw rod, the inclined block is first squeezed and slides down to squeeze the spring, and then the spring drives the inclined block to reset inside the slide groove as the installation block enters, thereby facilitating the installation between the screw rod and the screw head.

[0007] Preferably, one end of the spring is fixedly installed on the inner side of the screw rod, and the other end of the spring is fixedly installed on the bottom surface of the inclined block. Here, by providing the spring, when the mounting block slides into the inner side of the screw rod, the inclined block is first squeezed and pressed toward the inner side of the screw rod, thereby deforming the spring, and then when the position of the sliding groove of the mounting block is consistent with the position of the inclined block, the spring loses the squeezed force and deforms to drive the inclined block to reset inside the sliding groove.

[0008] Preferably, the slider is slidably connected to the slide groove, and the tooth plate is slidably connected to the slide groove. Here, by providing the slider, the slide groove, and the tooth plate, when the screw head needs to be removed, the slider can slide inside the slide groove in coordination with the rotation of the tooth rod, and the inclined block can be pushed back to the inside of the screw rod, so that the screw head can be removed.

[0009] Preferably, the gear rod is rotatably connected to the mounting block, and a cross groove is provided on the surface of the rod head. Here, by providing a cross groove on the surface of the rod head, a plum blossom screwdriver can be used to drive the gear rod to rotate.

[0010] Preferably, the surface of the screw head is covered with a protective sleeve, the inner side of the protective sleeve is provided with anti-slip convex particles, and the surface of the protective sleeve is provided with square grooves. Here, by providing the protective sleeve, physical protection can be effectively provided for the screw head to prevent moisture, chemicals and oxygen in the air from directly contacting the screw head, thereby effectively improving the service life of the screw head.

[0011] Preferably, the protective sleeve is made of natural rubber. Here, the protective sleeve made of natural rubber has good sealing performance, can effectively prevent the entry of moisture and impurities, and provide a certain degree of buffering and protection.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by arranging the mounting block, the slide groove, the spring, the inclined block, the rod head, the gear rod, the gear plate and the slider, not only can the effect of rapid disassembly and installation between the screw head and the screw rod be achieved, but also when the machine needs to be regularly maintained, the screw head can be easily disassembled without removing the entire screw, thereby making the maintenance work more efficient. Moreover, compared with the connection between the screw head and the screw rod through threads, this connection method does not need to worry about the occurrence of thread slippage due to repeated disassembly and assembly of the screw head and the screw rod, thereby effectively improving its service life.

[0014] 2. In the utility model, by arranging a protective cover, anti-slip convex particles and square grooves, a certain physical protection can be provided for the exposed screw head, so as to prevent the screw head from direct contact with the outside air and moisture, thereby preventing the screw head from rusting and effectively improving the service life of the screw head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a split self-drilling screw is provided for the utility model;

[0016] Figure 2 The utility model provides an exploded diagram of a screw head, a mounting block and a protective sleeve in a split self-drilling screw;

[0017] Figure 3 The utility model provides an exploded diagram of a tooth plate and a slider in a split self-drilling screw;

[0018] Figure 4 The utility model proposes a split self-drilling screw Figure 3 A in the enlarged view;

[0019] Figure 5 The utility model provides an exploded diagram of a rod head, a tooth plate and a tooth rod in a split self-drilling screw;

[0020] Figure 6 The utility model provides a structural schematic diagram of a protective sleeve in a split self-drilling screw.

[0021] Legend:

[0022] 1. Screw rod; 2. Screw head; 3. Mounting block; 4. Slide groove; 5. Spring; 6. Bevel block; 7. Rod head; 8. Gear rod; 9. Gear plate; 10. Slider; 11. Pad; 12. Protective cover; 13. Anti-skid convex particles; 14. Square groove. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Embodiment 1

[0026] See also Figure 1-6The utility model provides a technical solution: a split self-drilling screw, including a screw and a screw head, a mounting block 3 is fixedly installed on the side of the screw head 2, the mounting block 3 is slidably connected to the screw 1, a slide groove 4 is opened on the inner side of the mounting block 3, a spring 5 is arranged on the inner side of the screw 1, one end of the spring 5 is fixedly installed on the inner side of the screw 1, and the other end of the spring 5 is fixedly installed on the bottom surface of the inclined block 6. By setting the spring 5, when the mounting block 3 slides into the inner side of the screw 1, the inclined block 6 is first squeezed and squeezed toward the inner side of the screw 1, so that the spring 5 is deformed, and then when the position of the slide groove 4 of the mounting block 3 is consistent with the position of the inclined block 6, the spring 5 will lose the squeezed force and deform to drive the inclined block 6 to reset inside the slide groove 4.

[0027] See also Figure 1-6 The inner side of the screw rod 1 is slidably connected with an inclined block 6, which is slidably connected to the slide groove 4, and the inner side of the screw head 2 is rotatably connected with a rod head 7. A cross groove is provided on the surface of the rod head 7, and a gear rod 8 is fixedly installed on the side of the rod head 7. The gear rod 8 is rotatably connected to the mounting block 3. A tooth plate 9 is meshed on the surface of the gear rod 8, which is slidably connected to the slide groove 4. A slider 10 is fixedly installed on the side of the tooth plate 9, and the slider 10 is slidably connected to the slide groove 4. By arranging the slider 10, the slide groove 4, and the tooth plate 9, when the screw head 2 needs to be disassembled, the slider 10 can be slid on the inner side of the slide groove 4 in cooperation with the rotation of the gear rod 8, and the inclined block 6 can be pushed back to the inner side of the screw rod 1, so that the screw head 2 can be disassembled, and a pad 11 is fixedly installed on the side of the screw head 2.

[0028] Embodiment 2

[0029] See also Figure 1 and Figure 6 A protective sleeve 12 is provided on the surface of the screw head 2. The material of the protective sleeve 12 is natural rubber. The inner side of the protective sleeve 12 is provided with anti-slip convex particles 13. The surface of the protective sleeve 12 is provided with square grooves 14. The protective sleeve 12 is put on the surface of the screw head 2 to achieve the effect of isolating air and moisture, thereby effectively improving the service life of the screw head 2. The setting of the anti-slip convex particles 13 can increase the friction and prevent the protective sleeve 12 from falling off. The setting of the square grooves 14 can effectively increase the contact area with the fingers, thereby facilitating the installation of the protective sleeve 12.

[0030] Working principle: When installing the self-drilling screw, align the self-drilling screw with the installation position and drive it to rotate until the self-drilling screw is immersed in the installation position to achieve the purpose of installation. At this time, if it is necessary to separate the screw rod 1 from the screw head 2, first use a plum blossom screwdriver to align with the cross groove on the surface of the rod head 7, and then drive the rotating rod head 7 to rotate. At this time, the rod head 7 will drive the gear rod 8 to rotate, and then under the meshing action with the tooth plate 9, drive the slider 10 to slide outward along the slide groove 4, and then the slider 10 will come into contact with the inclined block 6 and squeeze the inclined block 6 until the inclined block 6 is pushed out from the inside of the slide groove 4. At this time, you can pinch the screw head 2 with your hand and drive the installation block 3 to be pulled outward to separate it from the screw rod 1. At this time, the separation of the screw 1 and the screw head 2 is completed. When installation is required, first align the The cross groove on the surface of the rod head 7 is rotated in the opposite direction to slide the slider 10 along the slide groove 4 inwardly, then pinch the screw head 2 and adjust the position of the mounting block 3, slide the mounting block 3 toward the inside of the screw rod 1, and when the mounting block 3 contacts the inclined block 6, the inclined block 6 will move downward under the action of its inclined surface and squeeze the spring 5. As the mounting block 3 enters, the spring 5 will drive the inclined block 6 to reset on the inside of the slide groove 4, thereby completing the installation between the screw rod 1 and the screw head 2, and then put the protective cover 12 on the surface of the screw head 2 to achieve the effect of isolating air and moisture, thereby effectively improving the service life of the screw head 2, the setting of the anti-slip convex particles 13 can increase the friction and prevent the protective cover 12 from falling off, and the setting of the square groove 14 can effectively increase the contact area with the fingers, thereby facilitating the installation of the protective cover 12.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A split self-drilling screw, comprising a screw rod (1) and a screw head (2), characterized in that: A mounting block (3) is fixedly mounted on the side of the screw head (2), a sliding groove (4) is provided on the inner side of the mounting block (3), a spring (5) is provided on the inner side of the screw rod (1), an inclined block (6) is slidably connected to the inner side of the screw rod (1), a rod head (7) is rotatably connected to the inner side of the screw head (2), a toothed rod (8) is fixedly mounted on the side of the rod head (7), a toothed plate (9) is meshed on the surface of the toothed rod (8), a sliding block (10) is fixedly mounted on the side of the toothed plate (9), and a pad (11) is fixedly mounted on the side of the screw head (2).

2. The split self-drilling screw according to claim 1, characterized in that: The mounting block (3) is slidably connected to the screw rod (1), and the inclined block (6) is slidably connected to the slide groove (4).

3. The split self-drilling screw according to claim 1, characterized in that: One end of the spring (5) is fixedly mounted on the inner side of the screw rod (1), and the other end of the spring (5) is fixedly mounted on the bottom surface of the inclined block (6).

4. The split self-drilling screw according to claim 1, characterized in that: The sliding block (10) is slidably connected to the sliding groove (4), and the tooth plate (9) is slidably connected to the sliding groove (4).

5. The split self-drilling screw according to claim 1, characterized in that: The gear rod (8) is rotatably connected to the mounting block (3), and a cross groove is provided on the surface of the rod head (7).

6. The split self-drilling screw according to claim 1, characterized in that: The surface of the screw head (2) is covered with a protective sleeve (12), the inner side of the protective sleeve (12) is provided with anti-slip convex particles (13), and the surface of the protective sleeve (12) is provided with a square groove (14).

7. The split self-drilling screw according to claim 6, characterized in that: The material of the protective sleeve (12) is natural rubber.

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