Rust-proof wear-resistant hexagon socket round head machine screw

Abstract

The utility model discloses a rust-proof wear-resistant hexagon round head machine screw, which comprises a screw rod and a screw head, an oil storage tank is arranged in the screw rod, a plurality of oil outlet holes communicated with the oil storage tank are arranged on the screw rod, the screw rod is provided with a plurality of sliding chutes, the sliding chutes and the oil outlet holes are arranged at intervals, arc-shaped plates are connected in the sliding chutes in a sliding and sealing manner, and the screw head is arranged on the screw rod. A plurality of first springs are installed in the sliding groove, and the output ends of the first springs are connected with the arc-shaped plate. Through cooperative arrangement of a pressure block and a first spring, the pressure block spirally descends in an oil storage groove to apply pressure to oil, so that an arc-shaped plate drives the first spring to be compressed, and after installation, when the oil amount is gradually reduced, the first spring drives the arc-shaped plate to reset and pop out; finally, oil can flow out of the oil outlet holes in the upper and lower parts of the screws at different inclination angles after installation to prevent rust; and the circular baffles with different lengths are mounted at the bottom of the pressure block, so that when the screws cope with mounting plates with different thicknesses, no oil flows out of the oil outlets in the mounting plates, and waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rust-proof and wear-resistant hexagon socket round head machine screws, in particular to a rust-proof and wear-resistant hexagon socket round head machine screw. Background Art

[0002] Round head machine screws are a common connection device in daily life. They are tools that use the physical and mathematical principles of the inclined circular rotation of an object and friction to gradually tighten objects and parts. They are widely used in machinery, construction and other fields.

[0003] In the prior art, there is a rust-proof and wear-resistant hexagon socket head machine screw with announcement number CN216742369U. The rust-proof performance of the screw is improved by providing an oil storage tank and an oil outlet hole in the screw. However, this method does not apply a certain pressure to the oil in the oil storage tank. Therefore, when the screw is used perpendicular to the ground after installation, the oil inside the screw will only seep out from the bottom of the screw due to gravity, and will not have a good rust-proof effect on the area between the screw head and the installation surface where air is easily introduced. Moreover, when the screw is installed at an angle or parallel to the ground, the oil inside the screw can only rust-proof the lower part of the screw, and the effect is also poor. Moreover, when used on a thin plate-like installation surface, the oil seeping out of the oil outlet hole at the bottom of the screw is ineffective. Utility Model Content

[0004] Based on this, it is necessary to provide a rust-proof and wear-resistant hexagon socket head machine screw to address the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a rust-proof and wear-resistant hexagon socket round head machine screw, including a screw and a screw head, an oil storage tank is provided in the screw, and a plurality of oil outlet holes connected to the oil storage tank are provided on the screw, and the screw is provided with a plurality of slide grooves, and the slide grooves and the oil outlet holes are arranged at intervals. An arc plate is connected with a sliding seal in the slide groove, and a plurality of springs are installed in the slide groove. The output end of the spring is connected to the arc plate. The top of the oil storage tank passes through the screw head, and a pressure block is threadedly connected to the top of the oil storage tank. A slot is provided at the bottom of the pressure block, and a connecting plate is inserted in the slot. A circular baffle is installed at the end of the connecting plate away from the slot, and the outer diameter of the circular baffle is equal to the inner diameter of the oil storage tank.

[0006] Preferably, a top cover is further included, a groove is provided on the screw head, and an elastic member adapted to the groove is installed on the top cover.

[0007] Preferably, the groove is a hexagonal groove, and the number of the elastic members is six.

[0008] Preferably, an extrusion groove is provided in the top cover, an extrusion block is slidably connected in the extrusion groove, the extrusion block abuts against the top of the pressure block, a second spring is installed in the extrusion groove, and the output end of the second spring is connected to the extrusion block.

[0009] Preferably, a cross groove is provided on the top of the pressure block.

[0010] Preferably, an annular rubber water-absorbing ring is provided at the bottom of the top cover.

[0011] Compared with the existing technology, this technical solution has at least one of the following beneficial effects:

[0012] Through the coordinated arrangement of the pressure block and the spring 1, the pressure block spirally descends in the oil storage tank to apply pressure to the oil, causing the arc plate to drive the spring 1 to be compressed. As a result, after installation, when the oil volume gradually decreases, the spring 1 drives the arc plate to return and pop out, and ultimately, oil can flow out of the oil holes above and below the screws at different tilt angles after installation to prevent rust.

[0013] By installing circular baffles of different lengths at the bottom of the pressure block, when the screws are used with mounting plates of different thicknesses, no oil will flow out of the oil outlet holes at the mounting plate, thereby avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional view of an embodiment of the present utility model (without the connecting plate and the circular baffle);

[0015] Figure 2 A three-dimensional diagram of a pressure block and a circular baffle according to an embodiment of the present invention;

[0016] Figure 3 For an embodiment of the present utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 This is a three-dimensional diagram of a top cover according to an embodiment of the present invention;

[0018] Figure 5 A perspective view of an embodiment of the present invention without a top cover;

[0019] Figure 6 This is a top cross-sectional view of a screw according to an embodiment of the present invention;

[0020] In the figure, 1. screw; 2. screw head; 3. oil storage tank; 4. oil outlet hole; 5. slide groove; 6. arc plate; 7. spring 1; 8. pressure block; 9. slot; 10. connecting plate; 11. circular baffle; 12. top cover; 13. groove; 14. elastic part; 15. extrusion groove; 16. extrusion block; 17. spring 2; 18. cross groove; 19. annular rubber water-absorbing ring. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] See also Figures 1 to 6 The embodiment of the present application provides a rust-proof and wear-resistant hexagon socket round head machine screw, including a screw rod 1 and a screw head 2. The screw rod 1 and the screw head 2 are integrally welded or fixedly connected by other means. An oil storage tank 3 is provided in the screw rod 1. A plurality of oil outlet holes 4 communicating with the oil storage tank 3 are provided on the screw rod 1. The screw rod 1 is provided with a plurality of slide grooves 5. The slide grooves 5 and the oil outlet holes 4 are spaced apart. An arc plate 6 is slidingly and sealingly connected in the slide groove 5. A plurality of springs 7 are installed in the slide groove 5. The output end of the spring 7 is connected to the arc plate 6. The top of the oil storage tank 3 passes through the screw head 2. A pressure block 8 is threadedly connected to the top of the oil storage tank 3. A slot 9 is provided at the bottom of the pressure block 8. A connecting plate 10 is inserted in the slot 9. A circular baffle 11 is installed at the end of the connecting plate 10 away from the slot 9. The outer diameter of the circular baffle 11 is equal to the inner diameter of the oil storage tank 3. The inner diameter of the thread in the oil storage tank 3 is larger than the inner diameter of the oil storage tank 3 itself, so that the circular baffle 11 can be inserted into the oil storage tank 3 and abut against its inner wall without affecting the screw installation of the pressure block 8.

[0023] In this embodiment, after more oil is injected into the oil storage tank 3 in the screw rod 1, the pressure block 8 is screwed in from the oil storage tank 3 at the top of the screw head 2. When screwing in, the pressure in the oil storage tank 3 increases, and the increased pressure causes the oil to squeeze the arc plate 6 back into the slide groove 5. At this time, the spring 1 7 is in a compressed state, so after screwing in the pressure block 8, the screw can be installed. After installation, as the oil in the oil storage tank 3 is gradually discharged from the oil outlet 4, the pressure in the oil storage tank 3 gradually decreases, so that the spring 1 7 drives the arc plate 6 The oil storage tank 3 penetrates the screw head 2, and the oil level initially injected can be raised to the screw head 2, so that the initial oil level after the pressure block 8 squeezes the oil level down is still above the oil outlet hole 4 on the screw rod 1 closest to the screw head 2. When it is necessary to install on a thinner mounting surface, the circular baffle 11 connected to the connecting plate 10 can be placed into the oil storage tank 3 first, and then oil can be injected into it. At this time, the circular baffle 11 and the inner wall of the oil storage tank 3 should be rotatably connected and preferably rotatably sealed. Then, the slot 9 at the bottom of the pressure block 8 is plugged into the connecting plate 10, thereby driving the circular baffle 11 to rotate. After the pressure block 8 is installed, the entire screw is installed, so that the oil outlet 4 at the circular baffle 11 will not discharge oil, while the oil outlet 4 at the connecting plate 10 can still discharge oil normally; the oil outlet holes 4 at different heights on the screw 1 can be blocked by circular baffles 11 of different lengths, thereby further improving the applicability of the screw.

[0024] In some embodiments, to facilitate protection of the screw head 2 and the pressure block 8, a top cover 12 is further provided. The screw head 2 is provided with a groove 13. An elastic member 14 adapted to fit within the groove 13 is mounted on the top cover 12. The elastic member 14 comprises an elastic plastic member that can bend somewhat during installation. After installation, the bottom of the elastic member can spring back out and engage with the groove 13. After the screw is installed, the top cover 12 can be installed onto the screw head 2 by pressing, and the elastic member 14 on the top engages with the groove 13 to prevent it from falling off.

[0025] In some embodiments, in order to facilitate the adaptation to the shape of the inner hexagon of a screw, the groove 13 is set to be an inner hexagon groove, and the number of the elastic members 14 is six.

[0026] In some embodiments, to increase the pressure on the pressure block 8 and prevent the pressure block 8 from being ejected by the high pressure in the oil storage tank 3 after installation, an extrusion groove 15 is provided in the top cover 12. An extrusion block 16 is slidably connected in the extrusion groove 15. The extrusion block 16 abuts the top of the pressure block 8. A second spring 17 is installed in the extrusion groove 15, and the output end of the second spring 17 is connected to the extrusion block 16. The second spring 17 squeezes the extrusion block 16, thereby exerting pressure on the pressure block 8. The elastic member 14 on the top cover 12 is engaged with the groove 13, thereby preventing the second spring 17 from being in a compressed state after the top cover 12 is installed and ejecting the top cover 12. The provision of the extrusion groove 15 prevents the extrusion block 16 from deflecting when it is squeezed by the second spring 17.

[0027] In some embodiments, in order to facilitate the installation of the pressure block 8 , a cross groove 18 is provided on the top of the pressure block 8 .

[0028] In some embodiments, in order to further improve the anti-rust efficiency, an annular rubber water absorption ring 19 is provided at the bottom of the top cover 12. Thus, the annular rubber water absorption ring 19 expands after absorbing water, preventing the outer wall water source from contacting the installed screw 1.

[0029] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A rust-proof and wear-resistant hexagon socket head machine screw, comprising a screw rod (1) and a screw head (2), wherein an oil storage tank (3) is provided in the screw rod (1), and a plurality of oil outlet holes (4) connected to the oil storage tank (3) are provided on the screw rod (1), characterized in that: The screw (1) is provided with a plurality of slide grooves (5), the slide grooves (5) and the oil outlet holes (4) are spaced apart, an arc plate (6) is connected in a sliding seal in the slide groove (5), a plurality of springs (7) are installed in the slide groove (5), the output end of the spring (7) is connected to the arc plate (6), the top of the oil storage tank (3) passes through the screw head (2), the top of the oil storage tank (3) is threadedly connected to a pressure block (8), the bottom of the pressure block (8) is provided with a slot (9), a connecting plate (10) is inserted in the slot (9), and a circular baffle (11) is installed at the end of the connecting plate (10) away from the slot (9), and the outer diameter of the circular baffle (11) is equal to the inner diameter of the oil storage tank (3).

2. The rust-proof and wear-resistant hexagon socket head machine screw according to claim 1, characterized in that: It also includes a top cover (12), a groove (13) is provided on the screw head (2), and an elastic member (14) adapted to the groove (13) is installed on the top cover (12).

3. The rust-proof and wear-resistant hexagon socket head machine screw according to claim 2, characterized in that: The groove (13) is a hexagonal groove, and the number of the elastic members (14) is six.

4. The rust-proof and wear-resistant hexagon socket head machine screw according to claim 2, characterized in that: An extrusion groove (15) is provided in the top cover (12), an extrusion block (16) is slidably connected in the extrusion groove (15), the extrusion block (16) abuts against the top of the pressure block (8), a second spring (17) is installed in the extrusion groove (15), and the output end of the second spring (17) is connected to the extrusion block (16).

5. The rust-proof and wear-resistant hexagon socket head machine screw according to claim 1, characterized in that: A cross groove (18) is provided on the top of the pressure block (8).

6. The rust-proof and wear-resistant hexagon socket head machine screw according to claim 2, characterized in that: An annular rubber water-absorbing ring (19) is provided at the bottom of the top cover (12).

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