Hexagonal head conical surface sealing screw

Abstract

The hexagonal head conical surface sealing screw comprises a screw body, a hexagonal groove is formed in the top end of the screw body, a through hole is formed in the bottom end of the hexagonal groove, a sealing plate is installed in the hexagonal groove, an inserting rod is welded to the bottom end of the sealing plate, a sealing gasket is installed at the top end of the inserting rod in a sleeved mode, and the bottom of the sealing gasket is connected to the groove bottom of the hexagonal groove in a pressed mode. The bottom end of the inserting rod is connected with a connecting rod, the bottom end of the connecting rod is screwed with a fixing screw, a gasket and a bottom pad are clamped between the connecting rod and the fixing screw, an elastic cavity is formed in the bottom end of the inserting rod, a spring is installed in the elastic cavity, the bottom end of the spring is connected with a blocking disc, a supporting rod is welded to the bottom end of the blocking disc, and the bottom end of the supporting rod is welded to the top end of the connecting rod. The device has the advantages of being small in occupied space, good in sealing effect during installation, convenient to disassemble and capable of preventing external dust from blocking the hexagonal groove.

Description

Technical Field

[0001] This invention relates to the field of screw technology, and more specifically, to hexagonal head tapered sealing screws. Background Technology

[0002] A screw is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually tighten objects and machine parts. "Screw" is a general term for fasteners and is commonly used in everyday speech.

[0003] Patent publication number CN213541016U discloses a novel hexagonal head screw, comprising a rotating head and a stud portion. The rotating head has an insertion hole extending to the stud portion, and a connecting post is embedded within the insertion hole. One end of the connecting post has a threaded connector, and the other end has a lifting portion. The rotating head also has a threaded mounting hole for threaded engagement of the threaded connector. A countersunk surface is formed on the rotating head, and a cover plate is embedded within the countersunk surface to conceal the insertion hole. The rotating head has an inclined cut surface, and the threaded mounting hole is located on this inclined cut surface. This hexagonal head screw is characterized by convenient rotation, small space occupation, complete overall function, and strong practicality.

[0004] However, in actual use, this structure has a hexagonal rotating head and an overall size larger than the stud. This can easily lead to unevenness at the sealing point when the rotating head is on the outside during sealing. Furthermore, an additional sealing gasket is required for sealing purposes, making it less practical for sealing applications. Therefore, a hexagonal head tapered sealing screw is proposed. Summary of the Invention

[0005] The technical solution of this invention addresses the overly simplistic problems of existing technologies, providing a significantly different solution. To overcome the aforementioned shortcomings of existing technologies, this invention provides a hexagonal head tapered sealing screw to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hexagonal head conical sealing screw, comprising a screw body, a hexagonal groove at the top of the screw body, a through hole at the bottom of the hexagonal groove, a sealing plate installed inside the hexagonal groove, a rod welded to the bottom of the sealing plate, a sealing gasket sleeved at the top of the rod, the bottom of the sealing gasket pressed against the bottom of the hexagonal groove, a connecting rod connected to the bottom of the rod, a fixing screw screwed to the bottom of the connecting rod, and a washer and a bottom gasket sandwiched between the connecting rod and the fixing screw.

[0007] Preferably, an elastic cavity is provided inside the bottom end of the insertion rod, and a spring is installed inside the elastic cavity. A retaining plate is connected to the bottom end of the spring, and a support rod is welded to the bottom end of the retaining plate. The bottom end of the support rod is welded to the top end of the connecting rod, so that when the sealing plate at the top of the insertion rod is subjected to pressure, the spring can contract, thereby pressing the sealing plate against the bottom of the hexagonal groove. This facilitates the insertion of a wrench into the hexagonal groove to disassemble and install the screw body. After the screw body is installed, the pressure of the wrench is removed, causing the spring to return to its original state, thereby causing the sealing plate at the top of the insertion rod to rise, so that the top of the sealing plate is flush with the top surface of the screw body. This can block external dust and prevent external dust from entering the hexagonal groove and causing blockage.

[0008] Preferably, the bottom end of the connecting rod is provided with a screw groove, and the fixing screw is bolted into the screw groove to facilitate the installation of the gasket and the sealing gasket. At the same time, it facilitates the disassembly of the structure connecting the two ends of the plug rod and the connecting rod, thereby facilitating maintenance.

[0009] Preferably, both the sealing plate and the sealing gasket are hexagonal in shape and are easy to slide and connect with the wall of the hexagonal groove so that the sealing plate can seal the hexagonal groove.

[0010] Preferably, both the gasket and the base gasket are circular, with the gasket having a diameter smaller than that of the screw body and the base gasket having a diameter slightly larger than that of the screw body. This allows the sealing gasket to seal the mounting hole on the installed seal, thereby improving the sealing performance of the installation.

[0011] Preferably, when the spring is in a free state, the sealing plate is flush with the top surface of the screw body so that the hexagonal groove can be sealed by the sealing plate in the free state.

[0012] The technical effects and advantages of this invention are as follows: 1. By creating a hexagonal groove on the top of the screw body, the screw body becomes cylindrical compared to existing technologies, reducing its space occupation. The hexagonal groove also allows for easier connection and engagement with a wrench, making installation and disassembly more convenient. 2. By using a sealing plate, bottom pad, insert rod, connecting rod, sealing gasket, washer, spring, retaining plate, support rod, and fixing screw, compared with the existing technology, after the screw body is installed, the sealing plate, under the automatic return of the spring, allows the insert rod to rise, making the top surface of the sealing plate flush with the top surface of the screw body. This effectively blocks external dust, prevents the hexagonal groove from becoming clogged, and improves the aesthetics of the installation. The sealing gasket and bottom pad, with the bottom pad pressed into the mounting hole and undergoing a certain deformation, seal the inside of the mounting hole, thereby improving the sealing performance of the screw body installation. This also avoids the need for a separate rubber gasket for sealing, improving the installation efficiency of the screw body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the screw body of the present invention.

[0015] Figure 3 This is a schematic diagram of the bottom connection structure of the sealing plate of the present invention.

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the insertion rod of the present invention.

[0017] Figure 5 This is a schematic diagram of the fixing screw connection structure of the present invention.

[0018] The attached diagram is labeled as follows: 1. Screw body; 2. Sealing plate; 3. Base washer; 4. Hexagonal groove; 5. Through hole; 6. Insert rod; 7. Connecting rod; 8. Sealing gasket; 9. Washer; 10. Spring; 11. Back plate; 12. Support rod; 13. Fixing screw. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] As attached Figure 1-5 The hexagonal head tapered sealing screw shown includes a screw body 1, a hexagonal groove 4 at the top of the screw body 1, a through hole 5 at the bottom of the hexagonal groove 4, a sealing plate 2 installed in the hexagonal groove 4, a plug rod 6 welded to the bottom of the sealing plate 2, a sealing gasket 8 sleeved on the top of the plug rod 6, the bottom of the sealing gasket 8 pressed against the bottom of the hexagonal groove 4, a connecting rod 7 connected to the bottom of the plug rod 6, a fixing screw 13 screwed to the bottom of the connecting rod 7, and a washer 9 and a bottom washer 3 sandwiched between the connecting rod 7 and the fixing screw 13.

[0021] As attached Figure 3As shown, an elastic cavity is provided inside the bottom end of the insertion rod 6, and a spring 10 is installed inside the elastic cavity. A retaining plate 11 is connected to the bottom end of the spring 10, and a support rod 12 is welded to the bottom end of the retaining plate 11. The bottom end of the support rod 12 is welded to the top end of the connecting rod 7, so that when the sealing plate 2 at the top of the insertion rod 6 is subjected to pressure, the spring 10 can contract, thereby pressing the sealing plate 2 against the bottom of the hexagonal groove 4. This makes it convenient to insert a wrench into the hexagonal groove 4 to disassemble and install the screw body 1. After the screw body 1 is installed, the pressure of the wrench is removed, causing the spring 10 to return to its original state, thereby causing the sealing plate 2 to rise and the top of the insertion rod 6 to remain flush with the top surface of the screw body 1. This can block external dust and prevent external dust from entering the hexagonal groove 4 and causing blockage of the hexagonal groove 4.

[0022] As attached Figure 5 As shown, the bottom end of the connecting rod 7 has a threaded groove, and the fixing screw 13 is bolted into the threaded groove to facilitate the installation of the gasket 9 and the sealing gasket 8. At the same time, it facilitates the disassembly of the structure connecting the two ends of the insertion rod 6 and the connecting rod 7, thereby facilitating maintenance.

[0023] As attached Figure 2 and Figure 3 As shown, both the sealing plate 2 and the sealing gasket 8 have a hexagonal structure and are easy to slide and connect with the wall of the hexagonal groove 4 so that the sealing plate 2 can seal the hexagonal groove 4.

[0024] As attached Figure 1 and Figure 3 As shown, both the gasket 9 and the base gasket 3 are circular in shape. The diameter of the gasket 9 is smaller than that of the screw body 1, while the diameter of the base gasket 3 is slightly larger than that of the screw body 1. This is so that the sealing gasket 8 can seal the mounting hole on the installed seal, thereby improving the sealing performance of the installation.

[0025] As attached Figure 1 As shown, when the spring 10 is in the free state, the sealing plate 2 is flush with the top surface of the screw body 1 so that the hexagonal groove 4 can be sealed by the sealing plate 2 in the free state.

[0026] The working principle of this invention is as follows: When using this hexagonal head tapered sealing screw for locking the seal, the bottom of the screw body 1 is screwed into the mounting hole of the seal, and the sealing plate 2 is pressed by a corresponding hexagonal wrench, which causes the insert rod 6 to be pressed down, thereby compressing the spring 10. As a result, one end of the hexagonal wrench is inserted into the hexagonal groove 4, and the screw body 1 is rotated, thereby installing the screw body 1 in the mounting hole of the seal. After installation, pull out the hex wrench. The spring 10 returns to its original position, causing the insertion rod 6 to rise and the sealing plate 2 to rise. The top of the sealing plate 2 is flush with the top surface of the screw body 1, sealing the hexagonal groove 4 and preventing external impurities from entering the hexagonal groove 4. This allows the hex wrench to be easily inserted into the hexagonal groove 4 when the screw body 1 is disassembled later. Meanwhile, because a bottom pad 3 is provided at the bottom of the screw body 1, the bottom pad 3 is pressed into the mounting hole and undergoes a certain deformation, which seals the inside of the mounting hole, thereby improving the sealing performance of the screw body 1 during installation. This also avoids the need to install a separate rubber pad for sealing, thus improving the installation efficiency of the screw body 1.

[0027] The present invention has the advantages of occupying little space, having a good sealing effect during installation, being easy to disassemble, and preventing external dust from clogging the hexagonal groove 4.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Hexagon head conical seal screw comprising a screw body (1), characterized in that: The hexagonal groove (4) is provided at the top end of the screw body (1), a through hole (5) is provided at the bottom end of the hexagonal groove (4), the sealing plate (2) is installed in the hexagonal groove (4), the plug rod (6) is welded at the bottom end of the sealing plate (2), the sealing gasket (8) is installed at the top end of the plug rod (6) in a sleeving mode, the sealing gasket (8) is pressed at the bottom of the hexagonal groove (4), the connecting rod (7) is connected to the bottom end of the plug rod (6), the fixed screw (13) is screwed to the bottom end of the connecting rod (7), and the gasket (9) and the bottom gasket (3) are clamped between the connecting rod (7) and the fixed screw (13).

2. The hex-head, conical point seal screw of claim 1, wherein: An elastic cavity is formed at the bottom end of the plug rod (6), the spring (10) is installed in the elastic cavity, the stop disc (11) is connected to the bottom end of the spring (10), the support rod (12) is welded to the bottom end of the stop disc (11), and the support rod (12) is welded to the top end of the connecting rod (7).

3. The hexagonal head taper point seal screw of claim 1, wherein: The connecting rod (7) is provided with a screw groove at the bottom end, and the fixed screw (13) is screwed in the screw groove.

4. The hexagonal head taper point seal screw of claim 1, wherein: The sealing plate (2) and the sealing gasket (8) are hexagonal in structure and are convenient for sliding connection with the groove wall of the hexagonal groove (4).

5. The hexagonal head taper point seal screw of claim 1, wherein: The gasket (9) and the bottom gasket (3) are circular in structure, the diameter of the gasket (9) is smaller than the diameter of the screw body (1), and the diameter of the bottom gasket (3) is slightly larger than the diameter of the screw body (1).

6. The hexagonal head taper point seal screw of claim 1, wherein: When the spring (10) is in a free state, the sealing plate (2) is flush with the top surface of the screw body (1).

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