Linear guide rail with oil brushing structure

By mechanically engaging the rotating ball with the inner rotating groove, automatic oiling without power consumption is achieved, solving the problem of power dependence in existing linear guides and improving lubrication effect and practicality.

CN223984688UActive Publication Date: 2026-03-10浙江威尔轴承工业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-07
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

The existing oiling structure of linear guides relies on oil pumps and pressure sensors, which consume a lot of electrical energy and reduces its practicality.

Method used

An oil brushing structure was designed, which utilizes the mechanical cooperation between the rotating ball and the inner rotating groove to achieve automatic oil brushing through the mechanical rolling of lubricating oil, thus avoiding the consumption of electrical energy.

Benefits of technology

This improved lubrication, reduced production and maintenance costs, and enhanced the practicality and durability of the linear guide.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a linear guide rail with an oil brushing structure, and relates to the technical field of linear guide rails. The linear guide rail with the oil brushing structure comprises a sliding rail, fixing bases are fixedly connected to the outer surfaces of the front side and the rear side of the sliding rail, the outer surface of the sliding rail is slidably sleeved with a sliding block, a positioning base is fixedly connected to the upper surface of the sliding block, and an oil brushing mechanism is arranged on the sliding block. Lubricating oil flows into the limiting groove from the gap between the rotating ball and the inner rotating groove, so that more lubricating oil lubricates the sliding rail, the lubricating effect is improved, the oil brushing structure brushes oil on the outer surface of the sliding rail without additionally using electric energy, dependence of the oil brushing structure on electric power in a traditional mode is avoided, more energy is saved, and the lubricating effect is improved. And the production cost and the maintenance cost of the linear guide rail are reduced.
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Description

Technical Field

[0001] This utility model relates to the field of linear guide technology, and in particular to a linear guide with an oil brushing structure. Background Technology

[0002] Linear guides, also known as linear rails, slide rails, linear guides, or linear slide rails, are used in high-precision or high-speed linear reciprocating motion applications. They can withstand a certain amount of torque and achieve high-precision linear motion under high loads.

[0003] However, the published patent CN202421132828.8 describes a linear guide rail with an oiling structure. By setting a driving component, it can operate the oiling component according to the friction between the slide rail and the slider, thereby realizing automatic oiling and brushing of the linear guide rail, which not only improves convenience but also enhances practicality.

[0004] However, in this comparative example, the linear guide is automatically lubricated by a drive system using an oil pump and a pressure sensor. Since the oil pump and pressure sensor both require electrical energy, the linear guide in this comparative example requires a high level of electrical energy, and the oiling structure is highly dependent on electricity, thus reducing the practicality of the linear guide. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a linear guide rail with an oiling structure. This solves the problem in the comparative example where an oil pump and pressure sensor work together to automatically oil the linear guide rail. However, the oil pump and pressure sensor both require electrical energy, which makes the linear guide rail in the comparative example require a high amount of electrical energy. Furthermore, the oiling structure is highly dependent on electricity, thus reducing the practicality of the linear guide rail.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a linear guide rail with an oil brushing structure, including a slide rail, wherein a fixing seat is fixedly connected to the outer surfaces of both the front and rear sides of the slide rail;

[0007] The outer surface of the slide rail is fitted with a slider.

[0008] The upper surface of the slider is fixedly connected to a positioning seat;

[0009] The slider is equipped with an oil brushing mechanism, which includes a threaded hole, a limit groove, an oil tank, a cover, an oil filling port, an installation groove, a filter cotton screen, a fixing block, an inner ring groove, a positioning bolt, a collection box, a support plate, an inner rotating groove, a positioning spring, a connecting hole, and a rotating ball.

[0010] Preferably, the fixing block is fixedly connected to the front surface of the slider;

[0011] The limiting groove is formed on the front surface of the fixing block and extends out of the rear surface of the fixing block.

[0012] The limiting groove extends downwards out of the lower surface of the fixing block;

[0013] The fuel tank is fixedly connected to the upper surface of the fixing block.

[0014] Preferably, the filler port is fixedly connected to the upper surface of the fuel tank and communicates with the interior of the fuel tank;

[0015] The mounting slot is located on the upper surface of the fuel tank and is connected to the interior of the fuel tank.

[0016] The cap is threaded onto the filler port.

[0017] Preferably, the filter mesh is fixedly sleeved on the inner wall of the mounting groove;

[0018] The fixing block is fitted onto the slide rail via a limiting groove;

[0019] The inner rotating groove is located inside the fixed block and is connected to the inner wall of the limiting groove.

[0020] Preferably, the inner annular groove is formed on the inner wall of the limiting groove, and the inner annular groove communicates with the interior of the inner rotating groove;

[0021] The rotating bead is slidably connected in the inner rotating groove, and the lower surface of the rotating bead extends into the limiting groove through the inner rotating groove.

[0022] The outer surface of the rotating bead is adapted to the bottom wall of the inner rotating groove;

[0023] The positioning spring is fixedly connected to the top wall of the inner rotating groove, and the lower end of the positioning spring is slidably connected to the outer surface of the rotating ball.

[0024] Preferably, the connecting hole is formed on the upper surface of the fixed block, and the connecting hole communicates with the interior of the inner rotating groove;

[0025] Two threaded holes are located on the lower surface of the fixing block;

[0026] The collection box is located on the lower surface of the fixed block;

[0027] The upper surface of the collection box is in contact with the lower surface of the fixing block.

[0028] Preferably, the two support plates are fixedly connected to the outer surfaces of the left and right sides of the collection box;

[0029] Two positioning bolts are slidably fitted onto two support plates, and the upper ends of the positioning bolts are threaded into the corresponding threaded holes.

[0030] The lower surface of the fuel tank has a through hole that communicates with its interior, and the through hole is connected to the interior of the connecting hole;

[0031] The outer surface of the rotating bead contacts the outer surface of the slide rail through the inner rotating groove.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] 1. In this linear guide with an oil-brushing structure, lubricating oil flows from the gap between the rotating ball and the inner rotating groove into the limiting groove, thereby allowing more lubricating oil to lubricate the slide rail and improving the lubrication effect. The oil-brushing structure does not require additional electricity to brush the outer surface of the slide rail, avoiding the dependence on electricity in traditional oil-brushing structures, making it more energy-efficient and reducing the production and maintenance costs of linear guides.

[0034] 2. The linear guide with an oil brush structure has an inner ring groove that serves as a guide, allowing lubricating oil to flow evenly onto the outer surface of the guide. The design of the inner ring groove enables the lubricating oil to be distributed more evenly on the guide, resulting in better lubrication and thus improving the practicality and durability of the linear guide. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0036] Figure 1 This is a schematic diagram of a linear guide rail with an oil brushing structure according to the present invention.

[0037] Figure 2 This is a schematic diagram of the slider of this utility model;

[0038] Figure 3 This is a sectional view of the vertical section of the fixing block of this utility model;

[0039] Figure 4 This is a schematic diagram of the collection box of this utility model;

[0040] Figure 5 This is a sectional view of the vertical section of the fixing block of this utility model.

[0041] Reference numerals: 1. Slide rail; 2. Fixed seat; 3. Slider; 4. Threaded hole; 5. Positioning seat; 6. Limiting groove; 7. Oil tank; 8. Cover; 9. Filling port; 10. Mounting groove; 11. Filter cotton screen; 12. Fixing block; 13. Inner ring groove; 14. Positioning bolt; 15. Collection box; 16. Support plate; 17. Inner rotating groove; 18. Positioning spring; 19. Connecting hole; 20. Rotating ball. Detailed Implementation

[0042] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0043] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0045] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0046] Please see Figure 1-5 This utility model provides a technical solution: a linear guide rail with an oil brushing structure, including a slide rail 1, and fixed seats 2 are fixedly connected to the outer surfaces of the front and rear sides of the slide rail 1.

[0047] Among them, the outer surface of the slide rail 1 is fitted with a slider 3;

[0048] The upper surface of the slider 3 is fixedly connected to the positioning seat 5;

[0049] The slider 3 is equipped with an oil brushing mechanism, which includes a threaded hole 4, a limiting groove 6, an oil tank 7, a cover 8, an oil filling port 9, an installation groove 10, a filter cotton screen 11, a fixing block 12, an inner ring groove 13, a positioning bolt 14, a collection box 15, a support plate 16, an inner rotating groove 17, a positioning spring 18, a connecting hole 19, and a rotating ball 20.

[0050] Furthermore, the fixing block 12 is fixedly connected to the front surface of the slider 3;

[0051] The limiting groove 6 is formed on the front surface of the fixing block 12 and extends out of the rear surface of the fixing block 12.

[0052] Among them, the limiting groove 6 extends downward out of the lower surface of the fixing block 12;

[0053] The oil tank 7 is fixedly connected to the upper surface of the fixing block 12.

[0054] Furthermore, the filler port 9 is fixedly connected to the upper surface of the fuel tank 7, and the filler port 9 is connected to the interior of the fuel tank 7;

[0055] The mounting groove 10 is located on the upper surface of the oil tank 7 and is connected to the interior of the oil tank 7.

[0056] The cap 8 is threaded onto the filler port 9.

[0057] Furthermore, the filter mesh 11 is fixedly sleeved on the inner wall of the mounting groove 10;

[0058] Among them, the fixing block 12 is sleeved on the slide rail 1 through the limiting groove 6;

[0059] The inner rotating groove 17 is formed inside the fixed block 12, and the inner rotating groove 17 communicates with the inner wall of the limiting groove 6.

[0060] Furthermore, the inner ring groove 13 is formed on the inner wall of the limiting groove 6, and the inner ring groove 13 communicates with the interior of the inner rotating groove 17.

[0061] The rotating bead 20 is slidably connected in the inner rotating groove 17, and the lower surface of the rotating bead 20 extends into the limiting groove 6 through the inner rotating groove 17.

[0062] The outer surface of the rotating bead 20 is adapted to the bottom wall of the inner rotating groove 17;

[0063] The positioning spring 18 is fixedly connected to the top wall of the inner rotating groove 17, and the lower end of the positioning spring 18 is slidably connected to the outer surface of the rotating ball 20.

[0064] Furthermore, the connecting hole 19 is formed on the upper surface of the fixing block 12, and the connecting hole 19 communicates with the interior of the inner rotating groove 17;

[0065] Two threaded holes 4 are provided on the lower surface of the fixing block 12;

[0066] The collection box 15 is disposed on the lower surface of the fixing block 12;

[0067] The upper surface of the collection box 15 is in contact with the lower surface of the fixing block 12.

[0068] Furthermore, two support plates 16 are fixedly connected to the outer surfaces of the left and right sides of the collection box 15;

[0069] Two positioning bolts 14 are slidably sleeved on two support plates 16, and the upper end of the positioning bolts 14 is threadedly connected to the corresponding threaded hole 4.

[0070] The lower surface of the oil tank 7 is provided with a through hole that communicates with its interior, and the through hole communicates with the interior of the connecting hole 19.

[0071] The outer surface of the rotating bead 20 contacts the outer surface of the slide rail 1 through the inner rotating groove 17.

[0072] Furthermore, in the initial state, when the positioning seat 5 is not under force, the positioning spring 18 is always slightly compressed. Under the action of the release force of the positioning spring 18, the rotating ball 20 is pushed to come close to the lower surface of the inner rotating groove 17. At this time, the rotating ball 20 blocks the lower side of the inner rotating groove 17, so that the lubricating oil will not flow out from the inner rotating groove 17.

[0073] Furthermore, during use, the lubricating oil in the oil tank 7 enters the inner rotating groove 17 through the through hole and the connecting hole 19, thereby wetting the outer surface of the rotating ball 20. When the slider 3 moves back and forth, the slider 3 moves back and forth, causing the fixed block 12 to move left and right. Because the outer surface of the rotating ball 20 is in contact with the upper surface of the slide rail 1, the friction between the rotating ball 20 and the slide rail 1 during the back and forth movement of the fixed block 12 causes the rotating ball 20 to roll in the inner rotating groove 17. The lubricating oil on the outer surface of the rotating ball 20 will be applied to the outer surface of the slide rail 1, thereby achieving the function of oiling the outer surface of the slide rail 1. Moreover, oiling the outer surface of the slide rail 1 does not require additional electricity, which is more energy-efficient and reduces the production cost of the linear guide.

[0074] Furthermore, when the component that needs to move back and forth is installed on the positioning seat 5, the component itself has weight, which presses the slider 3 and causes it to move slightly downward. During this process, the fixing block 12 also moves downward simultaneously. Because the rotating ball 20 is always in contact with the outer surface of the slide rail 1, and the fixing block 12 moves downward, it will slightly increase the gap between the bottom wall of the inner rotating groove 17 and the outer surface of the rotating ball 20, so that more lubricating oil will flow into the limiting groove 6 from the gap between the rotating ball 20 and the inner rotating groove 17, thereby lubricating the slide rail 1 and improving the lubrication effect. The oil brushing structure does not require additional electricity to brush the outer surface of the slide rail 1, avoiding the dependence on electricity in the traditional oil brushing structure, which is more energy-efficient and reduces the production and maintenance costs of the linear guide.

[0075] The inner ring groove 13 has the function of guiding flow. The lubricating oil will be evenly guided to the outer surface of the slide rail 1 through the inner ring groove 13. The design of the inner ring groove 13 makes the lubricating oil more evenly distributed on the slide rail, which makes the lubricating oil better on the slide rail 1, thereby improving the practicality and durability of the linear guide.

[0076] Furthermore, the collection box 15 can catch dripping lubricating oil, thus collecting excess lubricating oil, which is more energy-efficient and more practical.

[0077] In this design, the mechanical fit between the rotating bead 20 and the inner rotating groove 17 has high precision and small tolerance.

[0078] Furthermore, in this solution, both the slide rail 1 and the slider 3 are existing technologies in the publicly disclosed patent: CN202421132828.8 A linear guide rail with an oil brushing structure, which will not be elaborated here.

[0079] Structural Description:

[0080] Slide rail 1: The main body of the linear guide rail, providing the sliding track;

[0081] Fixed base 2: Fixedly connected to the front and rear outer surfaces of slide rail 1, used to support and position the slide rail;

[0082] Slider 3: Slides on the outer surface of slide rail 1 to bear and move loads;

[0083] Threaded hole 4: is formed on the lower surface of the fixing block 12 and is used to install the positioning bolt 14 to fix the collection box 15;

[0084] Positioning seat 5: Fixedly connected to the upper surface of slider 3, used for mounting and positioning the parts that need to be moved;

[0085] Oil tank 7: Fixedly connected to the upper surface of the fixed block 12, used to store lubricating oil;

[0086] Cover 8: Screwed onto the filler port 9 of oil tank 7 to seal the oil tank and prevent lubricating oil leakage;

[0087] Filler port 9: Fixedly connected to the upper surface of oil tank 7, used to add lubricating oil into the oil tank;

[0088] Filter cotton mesh 11: It is fixedly installed in the mounting groove 10 to prevent impurities from entering the oil tank;

[0089] Inner ring groove 13: It is formed on the inner wall of the limiting groove 6 and communicates with the interior of the inner rotating groove 17. It has a guiding function to make the lubricating oil evenly coated on the slide rail.

[0090] Positioning bolt 14: It is slidably sleeved on the support plate 16, and its upper end is threaded into the corresponding threaded hole 4 for fixing the collection box 15;

[0091] Collection box 15: Located on the lower surface of the fixing block 12, used to collect excess lubricating oil;

[0092] Inner rotating groove 17: for accommodating the rotating ball 20 and allowing it to roll;

[0093] Positioning spring 18: It is fixedly connected to the top wall of the inner rotating groove 17, and its lower end is slidably connected to the outer surface of the rotating ball 20, which is used to push the rotating ball 20 to contact the slide rail 1;

[0094] Rotating bead 20: It is slidably connected in the inner rotating groove 17, and its outer surface contacts the slide rail 1. It is used to apply lubricating oil and reduce friction.

[0095] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A linear guide rail having a brush oil structure, comprising a slide rail (1), characterized in that: The front and rear outer surfaces of the sliding rail (1) are fixedly connected with fixing seats (2); The outer surface of the sliding rail (1) is slidably sleeved with a sliding block (3); The upper surface of the sliding block (3) is fixedly connected with a positioning seat (5); The sliding block (3) is provided with an oil brushing mechanism, which comprises a threaded hole (4), a limiting groove (6), an oil tank (7), a cover (8), an oil filling port (9), a mounting groove (10), a filter cotton net (11), a fixing block (12), an inner ring groove (13), a positioning bolt (14), a collecting box (15), a supporting plate (16), an inner rotating groove (17), a positioning spring (18), a connecting hole (19) and a rotating bead (20).

2. The linear guide rail with a brush oil structure according to claim 1, characterized in that: The fixing block (12) is fixedly connected to the front surface of the sliding block (3); The limiting groove (6) is arranged on the front surface of the fixing block (12), and the limiting groove (6) extends out of the rear surface of the fixing block (12); The limiting groove (6) extends downward out of the lower surface of the fixing block (12); The oil tank (7) is fixedly connected to the upper surface of the fixing block (12).

3. The linear guide rail with a brush oil structure according to claim 1, characterized in that: The oil filling port (9) is fixedly connected to the upper surface of the oil tank (7), and the oil filling port (9) is communicated with the inside of the oil tank (7); The mounting groove (10) is arranged on the upper surface of the oil tank (7), and the mounting groove (10) is communicated with the inside of the oil tank (7); The cover (8) is threadedly sleeved on the oil filling port (9).

4. The linear guide rail with a brush oil structure according to claim 1, characterized in that: The filter cotton net (11) is fixedly sleeved on the inner wall of the mounting groove (10); The fixing block (12) is sleeved on the sliding rail (1) through the limiting groove (6); The inner rotating groove (17) is arranged in the fixing block (12), and the inner rotating groove (17) is communicated with the inner wall of the limiting groove (6).

5. The linear guide rail with a brush oil structure according to claim 1, characterized in that: The inner ring groove (13) is arranged on the inner wall of the limiting groove (6), and the inner ring groove (13) is communicated with the inside of the inner rotating groove (17). The rotating bead (20) is slidably connected in the inner rotating groove (17), and the lower surface of the rotating bead (20) extends into the limiting groove (6) through the inner rotating groove (17); The outer surface of the rotating bead (20) is matched with the bottom wall of the inner rotating groove (17); The positioning spring (18) is fixedly connected to the top wall of the inner rotating groove (17), and the lower end of the positioning spring (18) is slidably connected with the outer surface of the rotating bead (20).

6. The linear guide rail with a brush oil structure according to claim 1, characterized in that: The connecting hole (19) is arranged on the upper surface of the fixing block (12), and the connecting hole (19) is communicated with the inside of the inner rotating groove (17); Two threaded holes (4) are arranged on the lower surface of the fixing block (12); The collecting box (15) is arranged on the lower surface of the fixing block (12); The upper surface of the collecting box (15) is in contact with the lower surface of the fixing block (12).

7. The linear guide rail with a brush oil structure according to claim 1, characterized in that: Two supporting plates (16) are fixedly connected to the left and right outer surfaces of the collecting box (15); Two positioning bolts (14) are slidably sleeved on the two supporting plates (16), and the upper ends of the positioning bolts (14) are threadedly connected in the corresponding threaded holes (4); The lower surface of the oil tank (7) is provided with a through hole communicated with the inside of the oil tank (7), and the through hole is communicated with the inside of the connecting hole (19). The outer surface of the rotating ball (20) is in contact with the outer surface of the slide rail (1) through the inner rotating groove (17).

Citation Information

Patent Citations

  • Linear guide rail with oil brushing structure

    CN222526706U