Cross recess cylindrical head step screw

Abstract

The utility model discloses a cross recess cylindrical head step screw, which relates to the technical field of screws and comprises a screw body and a lubricating mechanism arranged in the screw body. The lubricating mechanism comprises oil absorption cotton which is arranged in the screw body and used for absorbing excessive lubricating oil, and an oil channel which is formed in the screw body and used for feeding the lubricating oil into a thread of the screw body for lubrication when the oil absorption cotton discharges oil; excessive lubricating oil added at a time can be absorbed and temporarily stored through the oil absorption cotton, oil leakage caused by excessive oil adding is avoided, resource waste is reduced, when lubrication is needed, the movable rod can be pulled towards the outer side of the screw body, the pressing plate is used for extruding the oil absorption cotton to discharge oil, and the service life of the screw is prolonged. The discharged lubricating oil can flow into the thread of the screw body through the oil duct to lubricate the screw, so that the screw is not easy to rust and block and is difficult to disassemble, a worker can finish the lubricating process of the screw by regularly pulling the movable rod outwards, oil does not need to be added into the screw every time the screw is lubricated, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This application relates to the field of screw technology, and in particular to Phillips head stepped screws with cross-grooved grooves. Background Technology

[0002] A screw is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually fasten objects and machine parts. Screws are commonly referred to as screws, a general term for fasteners. Screws are mostly made of carbon steel, but other metals or plastics are also used. Their structures include various head and slot types, such as hexagonal head, square head, T-head, flat round head, cylindrical head, round head, pan head, countersunk head, etc., as well as slot types such as flathead, internal triangular, internal square, Phillips head, and star-shaped.

[0003] Patent CN213711558U discloses "a lubricating screw, comprising a screw head and a screw rod, wherein the screw head is provided with an oil injection hole, the screw rod is provided with a main oil passage communicating with the oil injection hole, and at least one branch oil passage communicating with the circumferential side wall of the main oil passage is provided on the side wall of the main oil passage; a baffle with a cross-section larger than the opening of the oil injection hole is hinged to the screw head, and a driving component for driving the baffle to close the opening of the oil injection hole is connected to the baffle. This application has the effect that the screw is not easy to jam after corrosion and is easy to disassemble."

[0004] Regarding the aforementioned technologies, the inventors believe that adding too much lubricating oil into the screw at once can easily cause the lubricating oil to leak out, making subsequent cleaning inconvenient and wasting resources. Furthermore, it is quite inconvenient to lift the baffle to add oil each time the screw is lubricated. Utility Model Content

[0005] To address the aforementioned issues, this application provides a cross-grooved cylindrical head stepped screw.

[0006] The cross-head stepped screw with Phillips head provided in this application adopts the following technical solution:

[0007] A cross-head stepped screw includes a screw body and a lubrication mechanism disposed within the screw body. The lubrication mechanism includes an oil-absorbing cotton disposed within the screw body for absorbing excess lubricating oil, and an oil passage disposed within the screw body for delivering lubricating oil to the threads of the screw body for lubrication when the oil-absorbing cotton discharges oil. A movable rod slidably disposed within the screw body and located inside the oil-absorbing cotton has an oil filling groove for the user to add lubricating oil to the oil-absorbing cotton. A pressure plate is fixed at one end of the movable rod for squeezing and discharging oil from the oil-absorbing cotton when the movable rod moves outward from the screw body.

[0008] By adopting the above technical solution, the oil-absorbing cotton can absorb and temporarily store excess lubricating oil added at one time, avoiding oil leakage caused by excessive oiling and reducing resource waste. When lubrication is needed, the movable rod can be pulled outward to the screw body to squeeze the oil-absorbing cotton with the pressure plate to discharge the oil. The discharged lubricating oil can flow into the thread of the screw body through the oil channel to lubricate the screw, making the screw less prone to rusting, jamming, and difficult to disassemble.

[0009] Preferably, the screw body includes a cylindrical nut and a screw end, and a stepped post fixed between the cylindrical nut and the screw end, wherein a cross groove coaxial with the screw body is formed between the cylindrical nut and the stepped post.

[0010] By adopting the above technical solution, workers can insert tools such as screwdrivers into the cross-shaped groove to rotate the screw body, thereby screwing the screw body into the object to be installed.

[0011] Preferably, a hollow groove is formed inside the stepped column, the oil-absorbing cotton is filled in the hollow groove of the stepped column, one end of the movable rod and the pressure plate are slidably connected in the hollow groove of the stepped column, and the oil passage includes a main oil passage formed between the stepped column and the screw end and communicating with the hollow groove, and several branch oil passages formed on the outer wall of the screw end and communicating with the main oil passage.

[0012] By adopting the above technical solution, the operator can inject oil into the oil-absorbing cotton in the hollow groove through the oil injection groove. When the movable rod moves to the outside of the screw body, the pressure plate will squeeze the oil-absorbing cotton, thereby discharging part of the lubricating oil absorbed by the oil-absorbing cotton. At this time, the operator can block the oil injection groove with his hand so that the lubricating oil discharged by the oil-absorbing cotton can flow along the main oil passage and several branch oil passages to the outer wall of the screw end to lubricate the thread of the screw, making the screw less likely to rust and jam, and thus more difficult to disassemble.

[0013] Preferably, a push-pull plate is fixedly provided at one end of the movable rod away from the pressure plate, located outside the stepped column. A tension spring for pulling the oil injection groove into the stepped column for concealment is fixed between one side of the push-pull plate and the outer wall of the stepped column. A rubber washer is provided on the side of the stepped column near the screw end, and the screw end is located inside the rubber washer.

[0014] By adopting the above technical solution, under the tension of the tension spring and in conjunction with the connection of the push-pull plate, the oil injection groove can be pulled into the screw after oil injection to hide and seal it, thus preventing the oil injection groove from being exposed and easily blocked by dust and other foreign objects.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. The oil-absorbing cotton can absorb and temporarily store excess lubricating oil added at one time, avoiding oil leakage caused by over-lubrication and reducing resource waste. When lubrication is needed, the movable rod can be pulled outward to squeeze the oil-absorbing cotton with the pressure plate to discharge the oil. The discharged lubricating oil can flow into the thread of the screw through the oil channel to lubricate the screw, making the screw less prone to rusting, jamming, and difficult to disassemble. The operator can complete the screw lubrication process by periodically pulling out the movable rod, without having to add oil to the screw every time, which is convenient and quick.

[0017] 2. The oil filling groove facilitates the filling of oil into the absorbent cotton by the staff. Under the tension of the tension spring, and with the connection of the push-pull plate, the oil filling groove can be pulled into the screw after oiling to hide and seal it, preventing the oil filling groove from being exposed and easily blocked by dust and other foreign objects. The rubber gasket can seal the connection between the screw body and the installed object, making it difficult for external moisture to enter the connection between the screw body and the installed object and cause corrosion, thus extending the service life of the screw. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the cross-groove cylindrical head stepped screw according to an embodiment of this application;

[0019] Figure 2 This is a front view schematic diagram of the overall structure of the cross-slot cylindrical head stepped screw according to an embodiment of this application;

[0020] Figure 3 This is a front sectional view of the overall structure of the cross-head stepped screw according to an embodiment of this application;

[0021] Figure 4 The embodiments of this application mainly embody Figure 3 Enlarged view of the structure of A in the middle;

[0022] Reference numerals: 1. Screw body; 11. Cylindrical nut; 12. Stepped post; 13. Screw end; 14. Cross groove; 15. Rubber washer; 2. Oil absorbent cotton; 21. Main oil passage; 22. Sub-oil passage; 23. Hollow groove; 3. Movable rod; 31. Pressure plate; 32. Oil injection groove; 4. Push-pull plate; 41. Tension spring. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0024] This application discloses a cross-groove cylindrical head stepped screw.

[0025] Cross-head stepped screw, refer to Figure 1-3The screw body 1 includes a screw body 1 and a lubrication mechanism. The screw body 1 includes a cylindrical nut 11, a screw end 13, and a stepped post 12 fixed between the cylindrical nut 11 and the screw end 13. A cross groove 14 coaxial with the screw body 1 is provided between the cylindrical nut 11 and the stepped post 12. Workers can insert tools such as screwdrivers into the cross groove 14 to rotate the screw body 1, thereby screwing the screw body 1 into the installation object for installation. The stepped post 12 can connect and connect the cylindrical nut 11 and the screw end 13. The stepped design of the stepped post 12 can better distribute the pressure when the screw is screwed into the material and prevent material damage caused by stress concentration. As this is a public technology, the cylindrical nut 11 can be connected to tools such as screwdrivers, and the screw end 13 can be screwed into the installation object. The cylindrical nut 11, the stepped post 12, and the screw end 13 constitute the existing cross groove cylindrical head stepped screw, the internal structure and principle of which have been disclosed and will not be described in detail here.

[0026] Reference Figure 1-3 The lubrication mechanism includes an oil-absorbing cotton 2 disposed inside the screw body 1 to absorb excess lubricating oil, and an oil passage disposed inside the screw body 1 to deliver lubricating oil to the threads of the screw body 1 when the oil-absorbing cotton 2 discharges oil. A hollow groove 23 is provided inside the stepped column 12, and the oil-absorbing cotton 2 fills the hollow groove 23 of the stepped column 12. The oil passage includes a main oil passage 21 disposed between the stepped column 12 and the screw end 13 and communicating with the hollow groove 23, and several branch oil passages 22 disposed on the outer wall of the screw end 13 and communicating with the main oil passage 21. The stepped column 12 can support and limit the oil-absorbing cotton 2 through the hollow groove 23. The oil-absorbing cotton 2 can absorb and temporarily store excess lubricating oil added at one time. When the oil-absorbing cotton 2 is squeezed to discharge oil, the discharged lubricating oil 2 can flow along the main oil passage 21 and several branch oil passages 22 to the outer wall of the screw end 13, thereby lubricating the screw.

[0027] Reference Figure 1-3 A movable rod 3 is slidably provided inside the screw body 1 and located inside the oil-absorbing cotton 2. An oil filling groove 32 is provided inside the movable rod 3 for the user to add lubricating oil to the oil-absorbing cotton 2. A pressure plate 31 is fixedly provided at one end of the movable rod 3 for squeezing and discharging oil from the oil-absorbing cotton 2 when the movable rod 3 moves to the outside of the screw body 1. One end of the movable rod 3 and the pressure plate 31 are slidably connected in the hollow groove 23 of the stepped column 12. The stepped column 12 can limit the movable rod 3 and the pressure plate 31 through the hollow groove 23, so that the movable rod 3 and the pressure plate 31 can move laterally.

[0028] Workers can inject oil into the absorbent cotton 2 in the hollow groove 23 through the oil injection groove 32. When the movable rod 3 moves to the outside of the screw body 1, the pressure plate 31 will squeeze the absorbent cotton 2, thereby discharging part of the lubricating oil absorbed in the absorbent cotton 2. At this time, the worker blocks the oil injection groove 32 with his hand, so that the lubricating oil discharged by the absorbent cotton 2 can flow along the main oil passage 21 and several branch oil passages 22 to the outer wall of the screw end 13 to lubricate the threads of the screw, so that the screw is not easy to rust and jam and is difficult to disassemble.

[0029] Reference Figure 2-4 A push-pull plate 4 is fixedly installed on the end of the movable rod 3 away from the pressure plate 31, located outside the step column 12. A tension spring 41 is fixed between one side of the push-pull plate 4 and the outer wall of the step column 12 for pulling the oil filling groove 32 into the step column 12 for concealment. The push-pull plate 4 can connect the tension spring 41 and the movable rod 3. The operator can move the movable rod 3 laterally through the push-pull plate 4. Under the tension of the tension spring 41, the oil filling groove 32 will be pulled into the step column 12 for concealment, avoiding the oil filling groove 32 from being exposed for a long time and easily blocked by dust and other foreign objects, thus extending the service life of the movable rod 3 and other components.

[0030] Reference Figure 2-4 A rubber washer 15 is provided on the side of the stepped post 12 near the screw end 13. The screw end 13 is located inside the rubber washer 15. When the screw end 13 is rotated to install the item, the stepped post 12 will press the rubber washer 15 against the item. At this time, the rubber washer 15 can seal the connection between the screw body 1 and the item, making it difficult for external moisture to enter the connection between the screw body 1 and the item and cause corrosion, thus extending the service life of the screw.

[0031] The implementation principle of the cross-groove cylindrical head stepped screw in this application embodiment is as follows:

[0032] When in use, the staff can insert tools such as screwdrivers into the cross slot 14 to drive the screw body 1 to rotate, thereby screwing the screw end 13 of the screw body 1 into the installation item until the step post 12 presses the rubber washer 15 onto the installation item, thereby completing the installation.

[0033] Furthermore, the staff can hold the push-pull plate 4 and pull the movable rod 3 to the outside of the screw body 1, so that the oil injection groove 32 slides out from the screw body 1. Then, the staff can use tools such as syringes to inject lubricating oil into the oil injection groove 32. The injected lubricating oil will flow into the hollow groove 23. At this time, the oil-absorbing cotton 2 can absorb and temporarily store the excessive lubricating oil added at one time, avoiding oil leakage caused by excessive oil addition and reducing waste of resources.

[0034] When the threads of the screw body 1 need to be lubricated, the operator can pull the movable rod 3 outwards. At this time, the pressure plate 31 will move accordingly and squeeze the oil-absorbing cotton 2, thereby discharging part of the lubricating oil absorbed in the oil-absorbing cotton 2. At the same time, the operator blocks the oil filling groove 32 with his hand, so that the lubricating oil discharged by the oil-absorbing cotton 2 can flow along the main oil passage 21 and several branch oil passages 22 to the outer wall of the screw end 13 to lubricate the threads of the screw, making the screw less likely to rust and get stuck and difficult to disassemble. Since the oil-absorbing cotton 2 can store lubricating oil, the operator can complete the screw lubrication process by periodically pulling the movable rod 3, without having to add oil to the screw every time, which is convenient and quick.

[0035] After lubrication, under the tension of the tension spring 41, the oil injection groove 32 will be pulled into the stepped column 12 for concealment, preventing the oil injection groove 32 from being easily blocked by dust and other foreign objects due to prolonged exposure, thus extending the service life of components such as the movable rod 3.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cross recessed cylinder head step screw comprising a screw body (1) and a lubricating mechanism arranged in the screw body (1), characterized in that: the lubricating mechanism comprises an oil absorbing cotton (2) arranged in the screw body (1) for absorbing excessive lubricating oil, and an oil channel arranged in the screw body (1) and used for sending lubricating oil to the thread of the screw body (1) for lubrication when the oil absorbing cotton (2) discharges oil, a movable rod (3) is slidably arranged in the screw body (1) and located inside the oil absorbing cotton (2), an oil injection groove (32) is arranged in the movable rod (3) and used for adding lubricating oil into the oil absorbing cotton (2) by a user, and a pressing plate (31) is fixedly arranged at one end of the movable rod (3) and used for extruding and discharging oil from the oil absorbing cotton (2) when the movable rod (3) moves outward of the screw body (1). The screw body (1) comprises a cylindrical nut (11), a screw rod end (13), and a step column (12) fixedly arranged between the cylindrical nut (11) and the screw rod end (13), and a cross recess (14) coaxial with the screw body (1) is arranged between the cylindrical nut (11) and the step column (12).

2. A cross recessed cylinder head step screw according to claim 1 wherein: A hollow groove (23) is arranged in the step column (12), the oil absorbing cotton (2) is filled in the hollow groove (23) of the step column (12), and one end of the movable rod (3) and the pressing plate (31) are slidably connected in the hollow groove (23) of the step column (12).

3. A cross recessed cylinder head step screw according to claim 2 wherein: The oil channel comprises a main oil channel (21) arranged between the step column (12) and the screw rod end (13) and communicated with the hollow groove (23), and a plurality of branch oil channels (22) arranged in the outer wall of the screw rod end (13) and communicated with the main oil channel (21).

4. A cross recessed cylinder head step screw according to claim 3 wherein: A push-pull plate (4) is fixedly arranged at one end of the movable rod (3) away from the pressing plate (31) and located outside the step column (12).

5. A cross recessed cylinder head step screw according to claim 4 wherein: A pull spring (41) is fixedly arranged between one side of the push-pull plate (4) and the outer wall of the step column (12) and used for pulling the oil injection groove (32) into the step column (12) for hiding.

6. A cross recessed cylinder head step screw according to claim 5 wherein: A rubber gasket (15) is arranged on one side of the step column (12) close to the screw rod end (13), and the screw rod end (13) is located inside the rubber gasket (15).

7. A cross recessed cylinder head step screw according to claim 6 wherein: ​

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