Plastic opening linear bearing

Abstract

The utility model relates to a plastic opening linear bearing which comprises a fixed seat, a mounting seat and a sliding ring, a sliding groove is formed in the inner side of the fixed seat, the mounting seat is connected to the inner side of the sliding groove in a sliding mode, first clamping grooves formed in the fixed seat are formed in the front end and the rear end of the mounting seat, first clamping springs are connected to the inner sides of the first clamping grooves in a clamping mode, and the sliding ring is installed on the inner side of the mounting seat. The left end and the right end of the mounting base are both in threaded connection with screws, the screws are rotationally connected to the fixing base, the rotating directions of the left screw and the right screw are opposite, and the left screw and the right screw are fixedly connected through a connecting shaft. When the plastic opening linear bearing is abraded and a gap between the bearing and the shaft is increased, the screws are rotated to drive openings in the lower end of the mounting base to be close to each other; the mounting seat drives the lower end opening of the sliding ring to approach each other, the gap between the bearing and the shaft is adjusted, vibration and noise are avoided, and the service life of the bearing is longer.

Description

Technical Field

[0001] The utility model relates to the field of linear bearings, in particular to a plastic open linear bearing. Background Art

[0002] The utility model patent application number CN202221125075.9 discloses a C-shaped plastic linear bearing assembly, comprising a linear bearing, a linear bearing holder, and a steel shaft. The linear bearing is C-shaped, and the inner wall of the linear bearing is evenly distributed with several grooves for facilitating drainage. The grooves extend from the inner wall of the linear bearing toward the outer wall, extending through both ends of the linear bearing. Adjacent grooves form contact blocks that abut the steel shaft. The linear bearing adopts a special cross-sectional shape and the arrangement of the grooves, forming contact blocks between adjacent grooves. This reduces the contact area between the inner wall of the bearing and the shaft, thereby reducing the friction torque when the bearing operates on the shaft. When used in polluted environments, the grooves also function to drain pollutants. The bearing is corrosion-resistant and has good pollution resistance, resulting in a long service life. However, plastic linear bearings can wear during use, increasing the gap between the bearing and the shaft, which can cause vibration and noise during movement and even make it impossible to maintain linear accuracy. This shortens the service life and affects the operating life of other components of the entire machine. Utility Model Content

[0003] The utility model aims to solve the problems existing in the above-mentioned prior art and provides a plastic open linear bearing, which can adjust the gap between the bearing and the shaft to avoid vibration and noise, thereby extending the service life of the bearing.

[0004] The utility model adopts a technical solution to solve its technical problems: this plastic open linear bearing includes a fixed seat, a mounting seat, and a sliding ring, a sliding groove is opened on the inner side of the fixed seat, the mounting seat is slidably connected to the inner side of the sliding groove, the front and rear ends of the mounting seat are provided with a first clamping groove opened on the fixed seat, the inner side of the first clamping spring is clamped with the first clamping ring, the sliding ring is installed on the inner side of the mounting seat, the left and right ends of the mounting seat are threadedly connected with screws, the screws are rotatably connected to the fixed seat, the rotation directions of the left and right screws are opposite, and the left and right screws are fixedly connected by a connecting shaft. When the plastic open linear bearing wears and the gap between the bearing and the shaft increases, the screw is rotated, and the screw drives the lower end openings of the mounting seat to approach each other, and the mounting seat drives the lower end openings of the sliding ring to approach each other, so as to adjust the gap between the bearing and the shaft, avoid vibration and noise, and extend the life of the bearing.

[0005] For further improvement, the left end of the screw is fixedly connected to a handle, making it more convenient to rotate the screw.

[0006] As a further improvement, both the front and rear ends of the mounting seat are threadedly connected with screws, so that the bearing has a better use effect.

[0007] As a further improvement, a plurality of adjustment slots are provided on the mounting seat, so that the mounting seat has a better use effect.

[0008] For further improvement, the front and rear ends of the outer side of the sliding ring are fixedly connected with positioning strips, the front and rear ends of the inner side of the mounting seat are provided with positioning grooves, and the positioning strips are slidably connected to the inner sides of the positioning grooves, so that the installation effect of the sliding strips is better.

[0009] For further improvement, a positioning shaft is fixedly connected to the outer side of the positioning bar, a positioning hole opened on the mounting seat is provided on the inner side of the positioning groove, and the positioning shaft is slidably connected to the inner side of the positioning hole to prevent the sliding ring from rotating.

[0010] For further improvement, a plurality of equidistant and evenly distributed contact strips are fixedly connected to the inner side of the sliding ring, and the contact strips expand outwards toward one end of the sliding ring to reduce the contact area.

[0011] As a further improvement, the contact strip is arc-shaped at one end away from the sliding ring, which reduces the contact area and lowers the friction torque when the bearing runs on the shaft.

[0012] As a further improvement, the contact strip is provided with grooves, and when used in a polluted environment, the grooves can better discharge pollutants, thereby extending the service life.

[0013] For further improvement, both the front and rear ends of the sliding ring are provided with second clamping grooves opened on the mounting seat, and the inner side of the second clamping groove is clamped with a second clamping spring, so that the installation effect of the sliding ring is better.

[0014] The beneficial effect of the utility model is that when the plastic open linear bearing wears and the gap between the bearing and the shaft increases, the screw is rotated, the screw drives the lower end openings of the mounting seat to move closer to each other, and the mounting seat drives the lower end openings of the sliding ring to move closer to each other, thereby adjusting the gap between the bearing and the shaft, avoiding vibration and noise, and extending the life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the fixing seat of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the mounting base of the utility model;

[0019] Figure 5 This is a structural diagram of the sliding ring of the utility model.

[0020] Explanation of the accompanying drawings: 1. Fixed seat; 11. Slide groove; 12. First slot; 13. First retaining spring; 2. Mounting seat; 21. Second slot; 22. Second retaining spring; 23. Positioning slot; 231. Positioning hole; 24. Screw; 241. Connecting shaft; 242. Turning handle; 25. Adjusting slot; 3. Sliding ring; 31. Positioning strip; 311. Positioning shaft; 32. Contact strip; 321. Groove. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-5 The utility model is further described as follows:

[0022] like Figure 1-Figure 5 As shown: In this embodiment, a plastic open linear bearing includes a fixed seat 1, a mounting seat 2, and a sliding ring 3. A sliding groove 11 is opened on the inner side of the fixed seat 1, and the mounting seat 2 is slidably connected to the inner side of the sliding groove 11. The front and rear ends of the mounting seat 2 are provided with a first clamping groove 12 opened on the fixed seat 1. The first clamping spring 13 is clamped inside the first clamping groove 12. The sliding ring 3 is installed on the inner side of the mounting seat 2. The left and right ends of the mounting seat 2 are threadedly connected with a screw 24. The screw 24 is rotatably connected to the fixed seat 1. The rotation directions of the left and right screws 24 are opposite. The left and right screws 24 are fixedly connected by a connecting shaft 241. The left end of the screw 24 is fixedly connected to the left handle 242. There are several adjustment grooves 25 on the seat 2, and positioning strips 31 are fixedly connected at both ends of the outer side of the sliding ring 3. Positioning grooves 23 are provided at both ends of the inner side of the mounting seat 2. The positioning strip 31 is slidably connected to the inner side of the positioning groove 23. A positioning shaft 311 is fixedly connected to the outer side of the positioning strip 31. A positioning hole 231 is provided on the inner side of the positioning groove 23 and the positioning shaft 311 is slidably connected to the inner side of the positioning hole 231. A number of equidistantly distributed contact strips 32 are fixedly connected to the inner side of the sliding ring 3, and a groove 321 is provided on the contact strip 32. A second clamping groove 21 is provided on the front and rear ends of the sliding ring 3 and the second clamping spring 22 is clamped on the inner side of the second clamping groove 21.

[0023] When the utility model is in use: when the plastic open linear bearing is worn and the gap between the bearing and the shaft increases, the screw 24 is rotated, the screw 24 drives the lower end openings of the mounting seat 2 to move closer to each other, and the mounting seat 2 drives the lower end openings of the sliding ring 3 to move closer to each other, thereby adjusting the gap between the bearing and the shaft, avoiding vibration and noise, and extending the life of the bearing.

[0024] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A plastic open linear bearing, comprising a fixed seat (1), a mounting seat (2), and a sliding ring (3), characterized in that: The fixing seat (1) has a sliding groove (11) on the inner side, the mounting seat (2) is slidably connected to the inner side of the sliding groove (11), the mounting seat (2) is provided with a first clamping groove (12) on the fixing seat (1) at both the front and rear ends, the first clamping groove (12) is clamped with a first clamping spring (13) on the inner side, the sliding ring (3) is mounted on the inner side of the mounting seat (2), the left and right ends of the mounting seat (2) are threadedly connected to screw rods (24), the screw rods (24) are rotatably connected to the fixing seat (1), the left and right screw rods (24) rotate in opposite directions, and the left and right screw rods (24) are fixedly connected via a connecting shaft (241).

2. A plastic open linear bearing according to claim 1, characterized in that: The left end of the screw rod (24) is fixedly connected to a turning handle (242).

3. A plastic open linear bearing according to claim 1 or 2, characterized in that: The front and rear ends of the mounting seat (2) are both threadedly connected with screw rods (24).

4. The plastic open linear bearing according to claim 1, characterized in that: The mounting seat (2) is provided with a plurality of adjustment slots (25).

5. The plastic open linear bearing according to claim 1, characterized in that: The front and rear ends of the outer side of the sliding ring (3) are fixedly connected with positioning strips (31), the front and rear ends of the inner side of the mounting seat (2) are provided with positioning grooves (23), and the positioning strips (31) are slidably connected to the inner side of the positioning grooves (23).

6. The plastic open linear bearing according to claim 5, characterized in that: The outer side of the positioning strip (31) is fixedly connected with a positioning shaft (311), the inner side of the positioning groove (23) is provided with a positioning hole (231) opened on the mounting seat (2), and the positioning shaft (311) is slidably connected to the inner side of the positioning hole (231).

7. The plastic open linear bearing according to claim 1, characterized in that: A plurality of equidistant and evenly distributed contact strips (32) are fixedly connected to the inner side of the sliding ring (3).

8. The plastic open linear bearing according to claim 7, characterized in that: The end of the contact strip (32) away from the sliding ring (3) is in an arc shape.

9. A plastic open linear bearing according to claim 7 or 8, characterized in that: The contact strip (32) is provided with a groove (321).

10. The plastic open linear bearing according to claim 1, characterized in that: The sliding ring (3) is provided with a second clamping groove (21) opened on the mounting seat (2) at both the front and rear ends, and a second clamping spring (22) is clamped inside the second clamping groove (21).

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