Oil-containing linear bearing

Abstract

The utility model belongs to the technical field of bearings, and discloses an oil-containing linear bearing which comprises an outer cylinder, a retainer is movably clamped in the outer cylinder, a plurality of steel columns are movably connected in the retainer, sealing gaskets are fixedly connected to two ends of the retainer, and an oil injection hole is fixedly connected in the outer cylinder. Through cooperation of a cylindrical cam, a pressing block, a sealing ring, an oil outlet hole and other structures, the device has the effect of conveniently supplementing oil to a bearing, when the pressing block moves downwards, a protruding rod slides along the track of a guide groove and enables the cylindrical cam to rotate by 90 degrees, and therefore sealing of an oil injection hole is relieved; and then lubricating oil in the oil injector is injected into the cylindrical cam, the lubricating oil exerts pressure on the sealing ring while the oil injector is pressed, the sealing ring is made to move downwards, then the lubricating oil is injected into the retainer through the oil outlet hole, and therefore the lubricating oil can be conveniently supplemented into the bearing.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, in particular to an oil-containing linear bearing. Background Art

[0002] Linear bearings are sliding bearings, which have the characteristics of simple structure, easy use, easy adjustment and maintenance, and the ability to withstand large loads. At the same time, since linear motion is a simple uniform motion, it has a long life.

[0003] Most of the existing bearings mainly support, guide and dampen mechanical devices through the friction between the ball and the rail. After a period of use, the bearing needs to be refilled with oil to maintain a good lubrication state. However, some bearings adopt a closed design and cannot directly contact the inside of the bearing, which makes refilling difficult. Therefore, an oil-containing linear bearing is proposed to solve the problems raised by the background technology. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides an oil-containing linear bearing, which solves the problem that it is inconvenient to access the inside of the bearing, thereby making it inconvenient to replenish the oil therein.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil-containing linear bearing, comprising an outer cylinder, a retainer movably connected inside the outer cylinder, a plurality of steel columns movably connected inside the retainer, sealing gaskets fixedly connected at both ends of the retainer, an oil filling hole fixedly connected inside the outer cylinder, a cylindrical cam and a pressure block movably connected inside the oil filling hole, a guide groove is provided in a circumferential array on the outer wall of the cylindrical cam, an elastic member is fixedly connected inside the oil filling hole, a spring rod is fixedly connected inside the cylindrical cam, a sealing ring is fixedly connected to the top of the spring rod, and oil outlet holes are provided on the left and right sides of the bottom of the oil filling hole.

[0006] Preferably, the curvature of the guide groove is ninety degrees, and the inner wall of the sealing ring is provided with a circumferential array of protruding rods, which are movably engaged in the interior of the guide groove.

[0007] Preferably, circular holes matching the oil outlet hole are provided on both sides of the bottom of the cylindrical cam, and the oil outlet hole overlaps with the circular hole after rotating 90 degrees, and the oil filling hole is unsealed.

[0008] Preferably, the elastic member is used to support the pressing block, and when the pressing block moves downward, the cylindrical cam is rotated ninety degrees through the guide groove.

[0009] Preferably, the oil filling hole is provided with sliding grooves on both sides of the pressing block, which are used to limit the horizontal direction of the pressing block when it moves downward.

[0010] Preferably, the sealing ring abuts against the pressing block in an initial state and seals the cylindrical cam.

[0011] Preferably, the spring rod is divided into a rod body and a spring sleeved on the outside of the rod body, and two ends of the spring are fixedly connected to the sealing ring and the cylindrical cam respectively.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model enables the device to conveniently replenish oil to the bearing through the cooperation among the cylindrical cam, the pressure block, the sealing ring and the oil outlet hole. When the pressure block moves downward, the convex rod slides along the track of the guide groove and rotates the cylindrical cam ninety degrees, thereby releasing the seal of the oil filling hole, and then the lubricating oil in the oiler is injected into the interior of the cylindrical cam. When the oiler is pressed, the lubricating oil exerts pressure on the sealing ring and moves it downward, and then the lubricating oil is injected into the retainer through the oil outlet hole, thereby conveniently replenishing the lubricating oil inside the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the front section structure of the utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 It is a schematic diagram of the side section structure of the utility model;

[0018] Figure 5 It is an exploded view of the cylindrical cam of the utility model.

[0019] In the figure: 1. outer cylinder; 2. retainer; 3. steel column; 4. sealing gasket; 5. oil filling hole; 6. cylindrical cam; 7. guide groove; 8. pressure block; 9. elastic member; 10. spring rod; 11. sealing ring; 12. slide groove; 13. oil outlet hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 5As shown, the utility model provides an oil-containing linear bearing, including an outer cylinder 1, a retainer 2 is movably connected inside the outer cylinder 1, a plurality of steel columns 3 are movably connected inside the retainer 2, sealing gaskets 4 are fixedly connected at both ends of the retainer 2, an oil injection hole 5 is fixedly connected inside the outer cylinder 1, a cylindrical cam 6 and a pressure block 8 are movably connected inside the oil injection hole 5, a guide groove 7 is provided in a circumferential array on the outer wall of the cylindrical cam 6, an elastic member 9 is fixedly connected inside the oil injection hole 5, and a spring rod 10 is fixedly connected inside the cylindrical cam 6. A sealing ring 11 is fixedly connected to the top of the spring rod 10, and oil outlet holes 13 are provided on the left and right sides of the bottom of the oil filling hole 5; when the pressure block 8 moves downward, the convex rod slides along the trajectory of the guide groove 7 and rotates the cylindrical cam 6 ninety degrees, thereby releasing the seal of the oil filling hole 5, and then the lubricating oil inside the oiler is injected into the inside of the cylindrical cam 6. When the oiler is pressed, the lubricating oil puts pressure on the sealing ring 11 and moves it downward, and then the lubricating oil is injected into the retainer 2 through the oil outlet hole 13, so as to facilitate the replenishment of the lubricating oil inside the bearing.

[0022] like Figures 1 to 5 As shown, the arc of the guide groove 7 is ninety degrees, and the inner wall circumferential array of the sealing ring 11 is provided with convex rods, which are respectively movably connected to the inside of the guide groove 7. Circular holes adapted to the oil outlet hole 13 are opened on both sides of the bottom of the cylindrical cam 6. The oil outlet hole 13 coincides with the circular hole after rotating ninety degrees, and the oil filling hole 5 is unsealed. The elastic member 9 is used to support the pressing block 8. When the pressing block 8 moves downward, the cylindrical cam 6 is rotated ninety degrees through the guide groove 7; the support of the pressing block 8 by the elastic member 9 has the function that when the oiler is taken out and the operation is completed, the pressing block 8 is reset under the action of the elastic force of the elastic member 9, and drives the cylindrical cam 6 to rotate ninety degrees in the opposite direction, so that the cylindrical cam 6 seals the oil outlet hole 13.

[0023] like Figures 1 to 5 As shown, the inside of the oil filling hole 5 is provided with slide grooves 12 located on both sides of the pressure block 8, which are used to limit the horizontal direction when the pressure block 8 moves downward. The top of the sealing ring 11 is made of rubber material. The sealing ring 11 is in contact with the pressure block 8 in the initial state and seals the cylindrical cam 6. The spring rod 10 is divided into a rod body and a spring sleeved on the outside thereof, and the two ends of the spring are fixedly connected to the sealing ring 11 and the cylindrical cam 6 respectively; the pressure block 8 is sealed by the sealing ring 11, and its function is that when the oil filling operation is completed, there may be residual lubricating oil inside the cylindrical cam 6, and it is sealed to maintain the performance of the lubricating oil in the cylindrical cam 6 to the greatest extent, so as to facilitate the next use. The sealing ring 11 is supported by the spring, and the sealing ring 11 is reset under the action of the spring elastic force after the oiler is taken out, and the oil filling hole 5 is sealed again.

[0024] The working principle and use process of the utility model are as follows: the operator places the oiler on the pressure block 8 and presses it downward, so that the pressure block 8 moves downward. While it moves downward, the convex rod slides along the trajectory of the guide groove 7, thereby driving the cylindrical cam 6 to rotate ninety degrees. After the cylindrical cam 6 rotates, the circular hole at its bottom coincides with the oil outlet hole 13, and the seal of the oil filling hole 5 is released. Then the operator presses the oiler to inject the lubricating oil inside it into the interior of the cylindrical cam 6. While pressing the oiler, the lubricating oil exerts pressure on the sealing ring 11, thereby moving the sealing ring 11 downward. Then the lubricating oil flows into the outer tube 1 and the retainer 2 through the circular hole at the bottom of the cylindrical cam 6 and the oil outlet hole 13, completing the operation.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-containing linear bearing, comprising an outer cylinder (1), characterized in that: The outer cylinder (1) is movably connected to a retainer (2), and the retainer (2) is movably connected to a plurality of steel columns (3). Both ends of the retainer (2) are fixedly connected to sealing gaskets (4). The outer cylinder (1) is fixedly connected to an oil filling hole (5), and the oil filling hole (5) is movably connected to a cylindrical cam (6) and a pressure block (8). The outer wall of the cylindrical cam (6) is provided with a guide groove (7) in a circumferential array. The oil filling hole (5) is fixedly connected to an elastic member (9), and the cylindrical cam (6) is fixedly connected to a spring rod (10). The top of the spring rod (10) is fixedly connected to a sealing ring (11). The bottom of the oil filling hole (5) is provided with oil outlet holes (13) on both sides.

2. The oil-impregnated linear bearing according to claim 1, characterized in that: The guide groove (7) has an arc of ninety degrees, and the inner wall of the sealing ring (11) is provided with a convex rod array in a circumferential manner, which are respectively movably clamped in the interior of the guide groove (7).

3. The oil-impregnated linear bearing according to claim 1, characterized in that: Circular holes matching the oil outlet hole (13) are provided on both sides of the bottom of the cylindrical cam (6). The oil outlet hole (13) overlaps with the circular hole after rotating 90 degrees, and the oil filling hole (5) is unsealed.

4. The oil-impregnated linear bearing according to claim 1, characterized in that: The elastic member (9) is used to support the pressing block (8); when the pressing block (8) moves downward, the cylindrical cam (6) is rotated ninety degrees through the guide groove (7).

5. The oil-impregnated linear bearing according to claim 1, characterized in that: The oil filling hole (5) is provided with sliding grooves (12) located on both sides of the pressing block (8) and used to limit the horizontal direction of the pressing block (8) when it moves downward.

6. The oil-impregnated linear bearing according to claim 1, characterized in that: The top of the sealing ring (11) is made of rubber material. In the initial state, the sealing ring (11) abuts against the pressing block (8) and seals the cylindrical cam (6).

7. The oil-impregnated linear bearing according to claim 1, characterized in that: The spring rod (10) is divided into a rod body and a spring sleeved on the outside thereof, and two ends of the spring are respectively fixedly connected to a sealing ring (11) and a cylindrical cam (6).

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