Integrated grooved oil pin
By designing an integrated grooved oil pin and utilizing a movable sleeve and oil guide tube structure, the problem of insufficient lubrication contact of existing pins is solved, achieving comprehensive lubrication and easy operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO RUIZHI INNOVATION MACHINERY MANUFACTURING CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-05-12
AI Technical Summary
The existing lubricating oil for the pins cannot fully contact the hinge surfaces of the parts, resulting in poor lubrication.
An integrated grooved oil pin was designed, including a movable sleeve and a side baffle. The lubricating oil is fully distributed through the oil guide pipe and the oil outlet hole. The position of the oil outlet groove is adjusted by the rotation of the movable sleeve to ensure that the lubricating oil is in full contact with the hinge surface.
This allows the lubricating oil to fully contact the hinge surfaces, improving the lubrication effect and simplifying operation.
Smart Images

Figure CN224229046U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pin technology, and in particular to an integrated grooved oil pin. Background Technology
[0002] An oil pin is a mechanical connector that reduces friction and wear through lubrication design (such as oil grooves, oil holes, or self-lubricating materials). Its core function is to improve the reliability, lifespan, and smoothness of mechanical systems.
[0003] In actual use, the following shortcomings were found in this device:
[0004] For example, in the existing literature, there is a high-efficiency lubricating pin (CN213117034U). The reference has a corrugated groove cut into the bottom of the pin body. After the connector is installed, the contact area between the corrugated groove and the nut is reduced, and the lubricating oil can enter the interior of the corrugated groove, making it easier to install. The effect of easy installation is achieved through the cooperation between the connector, the threaded groove and the corrugated groove.
[0005] As shown in the above literature, current lubrication pins with oil grooves generally have an oil guide path inside the pin and an oil outlet on the pin surface. After the lubricating oil is injected, it is discharged through the oil outlet via the oil guide path. However, since the pin is generally fixed at the hinge position, the position of the oil outlet is also fixed accordingly, making it difficult for the lubricating oil to fully contact the hinge surface of the part.
[0006] Therefore, this application provides an integrated grooved oil pin to meet the requirements. Utility Model Content
[0007] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose an integrated grooved oil pin.
[0008] The technical problem to be solved by this utility model is to provide an integrated grooved oil pin to solve the problem that the lubricating oil of the existing pin shaft is difficult to fully contact the hinge surface of the part.
[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0010] An integrated grooved oil pin includes a movable sleeve and two side baffles. An oil guide pipe is connected through the two side baffles. The surface of the oil guide pipe is provided with multiple sets of oil outlet holes. The movable sleeve is rotatably installed in the middle of the two side baffles. An oil storage groove is opened through the interior of the movable sleeve, in which the oil guide pipe is located. An oil outlet groove is opened on the surface of the movable sleeve.
[0011] Preferably, the oil outlet holes are arranged in a ring at equal intervals on the surface of the oil guide pipe.
[0012] Preferably, all the oil guide pipes pass through the side baffle and are connected to the threaded connecting rod.
[0013] Preferably, the threaded connecting rod is hollow inside and communicates with the inside of the oil guide pipe.
[0014] Preferably, each of the threaded connecting rods has an oil inlet at the end furthest from the center.
[0015] Preferably, the oil inlet is sealed by inserting a sealing plug.
[0016] Preferably, both sides of the movable sleeve are integrally connected to limit plates, the limit plates abut against the surface of the side baffles, and an operating block is integrally provided above the limit plates.
[0017] Preferably, each of the limiting plates has a connecting ring fixedly connected at the end away from the center, and the side baffle has a movable groove at the end near the center, with the connecting rings rotatably connected in the movable groove.
[0018] Preferably, the surface of the connecting ring has two mating holes II, and the surface of the side baffle has two through-holes I.
[0019] Preferably, bolts are installed into the corresponding mating holes one and two to fix the position of the movable sleeve.
[0020] Compared with the prior art, this utility model has at least the following beneficial effects:
[0021] In the above solution, lubricating oil is introduced into the oil inlet of the threaded connecting rod. The lubricating oil is then sent into the oil reservoir through the oil guide pipe and discharged through the oil outlet groove on the surface of the movable sleeve to contact the hinge surface of the part. At the same time, during the oil injection process, the position of the oil outlet groove can be continuously adjusted by rotating the movable sleeve, so that the lubricating oil can fully contact the hinge surface and improve the lubrication effect.
[0022] In the above scheme, the rotation of the movable sleeve is mainly achieved by two connecting rings rotating in the movable groove of the side baffle. After the oil is filled, the mating hole one on the surface of the side baffle is aligned with the mating hole two on the surface of the connecting ring, and then the connecting bolts are inserted into the holes to fix the position of the movable sleeve. The operation is simple. Attached Figure Description
[0023] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.
[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0025] Figure 2 This is a schematic diagram of the overall front structure of this utility model;
[0026] Figure 3 This is a schematic diagram of the side baffle and oil guide pipe structure of this utility model;
[0027] Figure 4 This is a schematic diagram of the movable sleeve structure in this utility model.
[0028] [Figure Labels]
[0029] 1. Movable sleeve; 2. Side baffle; 3. Limiting plate; 4. Operating block; 5. Threaded connecting rod; 6. Oil guide pipe; 7. Oil outlet hole; 8. Oil filling port; 9. Sealing plug; 10. Movable groove; 11. Docking hole one; 12. Oil outlet groove; 13. Oil storage groove; 14. Connecting ring; 15. Docking hole two.
[0030] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying 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, and therefore should not be construed as a limitation of this utility model.
[0033] like Figure 1-4The embodiment of the present invention provides an integrated grooved oil pin, which includes two side baffles 2 and a movable sleeve 1. An oil guide pipe 6 is connected through the two side baffles 2. The oil guide pipe 6 is located in the oil storage tank 13 of the movable sleeve 1. The movable sleeve 1 is rotatably installed between the two side baffles 2.
[0034] like Figure 3 As shown, the oil guide tube 6 has multiple sets of oil outlet holes 7 arranged in a ring at equal intervals on its surface, and the inside of the oil guide tube 6 is hollow.
[0035] Furthermore, the oil guide pipes 6 all pass through the side baffles 2 and are connected to the threaded connecting rods 5. The threaded connecting rods 5 are hollow inside and are connected to the inside of the oil guide pipes 6.
[0036] Furthermore, the threaded connecting rod 5 has an oil inlet 8 at the end furthest from the center.
[0037] Specifically, such as Figure 4 As shown, the movable sleeve 1 has an oil outlet groove 12 on its surface.
[0038] Furthermore, the movable sleeve 1 is integrally connected to the limiting plate 3 at both ends, and the other end of the limiting plate 3 is fixedly connected to the connecting ring 14.
[0039] like Figure 3 As shown, the side baffles 2 each have a movable groove 10 at one end near the center.
[0040] In this embodiment, as Figure 1 As shown, the two connecting rings 14 are rotatably connected in the movable groove 10, while the limiting plate 3 abuts against the side baffle 2, so that the movable sleeve 1 is limited between the two side baffles 2 and can rotate stably.
[0041] Therefore, during the oil injection process, the pin is first fixed at the hinge position by two threaded connecting rods 5. At this time, the pin passes through the hinge hole, and the hinge part is sleeved on the outside of the movable sleeve 1. Then, a thin oil supply pipe is connected to the oil injection port 8 of the threaded connecting rod 5 to introduce lubricating oil into the pin. First, it will be injected into the oil storage tank 13 through the oil outlet hole 7 on the surface of the oil guide pipe 6. After the lubricating oil overflows from the oil storage tank 13, it will be discharged through the oil outlet groove 12 on the surface of the movable sleeve 1, so that the lubricating oil comes into contact with the hinge surface. Then, the movable sleeve 1 is continuously rotated to adjust the position of the oil outlet groove 12 so that the lubricating oil comes into full contact with the hinge surface.
[0042] Specifically, such as Figure 1-2 As shown, an operating block 4 is provided above each of the limiting plates 3. By pulling the operating block 4, the movable sleeve 1 can be rotated, which is convenient for manual operation.
[0043] At the same time, such as Figure 3-4As shown, the side baffle 2 has two through holes 11 on its surface, and the connecting ring 14 has two through holes 15 on its surface. After the oil is filled, the oil outlet groove 12 needs to be rotated to the top. At this time, the through hole 11 will be aligned with the corresponding through hole 15. Then, the connecting bolts are inserted into the holes to fix the side baffle 2 and the connecting ring 14, and the position of the movable sleeve 1 is fixed accordingly.
[0044] Furthermore, when no oil is being filled, the oil inlet 8 can be sealed by inserting the sealing plug 9.
[0045] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. An integrated grooved oil pin, characterized in that, include: The movable sleeve (1) and two side baffles (2) are connected by an oil guide pipe (6). The surface of the oil guide pipe (6) is provided with multiple sets of oil outlet holes (7). The movable sleeve (1) is rotatably installed in the middle of the two side baffles (2). An oil storage tank (13) is opened through the interior of the movable sleeve (1), in which the oil guide pipe (6) is located in the oil storage tank (13), and an oil outlet groove (12) is opened on the surface of the movable sleeve (1).
2. The integrated grooved oil pin according to claim 1, characterized in that: The oil outlet holes (7) are all arranged in an annular and equidistant pattern on the surface of the oil guide pipe (6).
3. The integrated grooved oil pin according to claim 1, characterized in that: The oil guide pipes (6) all pass through the side baffle (2) and are connected to the threaded connecting rod (5).
4. The integrated grooved oil pin according to claim 3, characterized in that: The threaded connecting rod (5) is hollow inside and communicates with the inside of the oil guide pipe (6).
5. The integrated grooved oil pin according to claim 3, characterized in that: Each of the threaded connecting rods (5) has an oil inlet (8) at the end furthest from the center.
6. The integrated grooved oil pin according to claim 5, characterized in that: The oil inlet (8) is sealed by inserting a sealing plug (9).
7. The integrated grooved oil pin according to claim 1, characterized in that: Both sides of the movable sleeve (1) are integrally connected to limit plates (3), the limit plates (3) abut against the surface of the side baffle (2), and an operating block (4) is integrally provided above the limit plates (3).
8. The integrated grooved oil pin according to claim 7, characterized in that: Each of the limiting plates (3) has a connecting ring (14) fixedly connected at the end away from the center, and the side baffle (2) has a movable groove (10) at the end near the center. The connecting ring (14) is rotatably connected in the movable groove (10).
9. The integrated grooved oil pin according to claim 8, characterized in that: The connecting ring (14) has two connecting holes 2 (15) on its surface, and two connecting holes 1 (11) are provided on the surface of the side baffle (2).
10. The integrated grooved oil pin according to claim 9, characterized in that: Bolts are installed into the corresponding docking holes 1 (11) and 2 (15) to fix the position of the movable sleeve (1).