Injection molding sealing bearing sleeve

Abstract

The utility model discloses an injection molding sealing bearing sleeve which comprises an outer lining, a first sealing ring, a gasket, a plane bearing and a rubber sealing ring are arranged on the inner side of the outer lining, the rubber sealing ring is directly formed between the outer lining and the plane bearing in an injection molding mode, the first sealing ring, the gasket and the plane bearing are sequentially connected in an abutting mode, and the first sealing ring is connected to the inner side of the outer lining in a clamping mode. An annular clamping groove matched with the first sealing ring, a first stepped groove matched with the gasket, a second stepped groove matched with the plane bearing and a third stepped groove matched with the rubber sealing ring are sequentially formed in the inner side of the outer lining from left to right. The rubber sealing ring is directly arranged between the end portion of the outer lining and the plane bearing in an injection molding mode, the gasket and the plane bearing are fixed in the outer lining, the plane bearing can remain lubricating oil in the bearing for lubrication, the rubber sealing ring prevents the lubricating oil from leaking from a gap between the plane bearing and the outer lining, dust can be blocked, and the service life of the bearing is prolonged. And the oil sealing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of linear modules, and more specifically to an injection-molded sealed bearing sleeve. Background Art

[0002] The linear module has a lead screw with bearing sleeves at both ends. In order to ensure the stable and smooth operation of the linear module, the inside of the bearing sleeve needs to be lubricated with oil. During operation, the lead screw drives the lubricating oil in the bearing sleeve to the outside through the spiral groove of the lead screw, causing the lubricating oil to flow out, and also brings dust from the outside of the linear module into the inside of the lead screw and adheres to the lubricating oil. After a long time, the accuracy and life of the linear module are reduced. Utility Model Content

[0003] In order to overcome the above defects of the prior art, the utility model provides an injection-molded sealed bearing sleeve to solve the problems existing in the above background technology.

[0004] The utility model provides the following technical solutions:

[0005] An injection-molded sealed bearing sleeve comprises an outer sleeve, wherein a first sealing ring, a gasket, a plane bearing and a rubber sealing ring injection-molded directly between the outer sleeve and the plane bearing are arranged on the inner side of the outer sleeve, wherein the first sealing ring, the gasket and the plane bearing are abutted in sequence, the first sealing ring is clamped on the inner side of the outer sleeve, and an annular clamping groove matching the first sealing ring, a first step groove matching the gasket, a second step groove matching the plane bearing and a third step groove matching the rubber sealing ring are arranged in sequence from left to right on the inner side of the outer sleeve.

[0006] Furthermore, a plurality of annular grooves are provided on the outer side of the plane bearing, and an oil sealing rib matched with the grooves is provided on the inner side of the rubber sealing ring, and the inner side of the rubber sealing ring abuts against the outer side of the plane bearing.

[0007] Furthermore, the cross-sectional shape of the groove is V-shaped, W-shaped or U-shaped.

[0008] Furthermore, the rubber sealing ring is provided with a step ring, which is integrally arranged with the rubber sealing ring, and the inner end surface of the step ring abuts against the outer end surface of the plane bearing.

[0009] Furthermore, a screw rod is provided at the center of the plane bearing, and a fastening nut and a self-locking nut are provided at the end of the screw rod. The fastening nut is located outside the plane bearing, and the fastening nut abuts against the plane bearing or the gap is extremely small.

[0010] Furthermore, the first sealing ring is an O-shaped sealing ring, and the inner side surface of the first sealing ring abuts against the screw rod.

[0011] Furthermore, a second sealing ring and an annular groove matched with the second sealing ring are provided on the left side of the outer bushing.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model fixes the gasket and the plane bearing in the outer bushing by directly injecting the rubber sealing ring between the end of the outer bushing and the plane bearing. The plane bearing can retain the lubricating oil in the bearing for lubrication. The rubber sealing ring prevents the lubricating oil from leaking from the gap between the plane bearing and the outer bushing and can also block dust, thereby achieving the effect of sealing oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the injection-molded sealed bearing sleeve.

[0015] Figure 2 A cross-sectional view of an injection-molded sealed bearing sleeve.

[0016] Figure 3 Schematic diagram of the disassembly of the injection-molded sealed bearing sleeve.

[0017] Figure 4 Schematic diagram of the use of injection-molded sealed bearing sleeves.

[0018] The accompanying drawings are marked as follows: 1. outer bushing; 2. first sealing ring; 3. gasket; 4. plane bearing; 5. rubber sealing ring; 51. oil sealing rib; 52. step ring; 6. fastening nut; 7. self-locking nut; 8. second sealing ring. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0020] like Figure 1-4 As shown, an injection-molded sealed bearing sleeve comprises an outer sleeve 1, the inner side of the outer sleeve 1 is provided with a first sealing ring 2, a gasket 3, a plane bearing 4 and a rubber sealing ring 5 injection-molded directly between the outer sleeve 1 and the plane bearing 4, the first sealing ring 2, the gasket 3 and the plane bearing 4 are abutted in sequence, the gasket 3 is made of copper, the softness of copper can fill uneven parts, and ensure that the first sealing ring 2, the gasket 3 and the plane bearing 4 fit tightly without gaps, the first sealing ring 2 is clamped on the inner side of the outer sleeve 1, and the inner side of the outer sleeve 1 is provided with an annular groove matched with the first sealing ring 2, a first step groove matched with the gasket 3, a second step groove matched with the plane bearing 4 and a third step groove matched with the rubber sealing ring 5 from left to right. The rubber sealing ring 5 is directly injection molded between the end of the outer bushing 1 and the plane bearing 4, and the gasket 3 and the plane bearing 4 are fixed in the outer bushing 1. The plane bearing 4 can retain the lubricating oil in the bearing for lubrication. The rubber sealing ring 5 prevents the lubricating oil from leaking from the gap between the plane bearing 4 and the outer bushing 1, and can also block dust and play an oil sealing effect.

[0021] The outer side surface of the plane bearing 4 is provided with a plurality of annular grooves, and the cross-sectional shape of the grooves is V-shaped, W-shaped or U-shaped. The inner side surface of the rubber sealing ring 5 is provided with an oil sealing rib 51 adapted to the groove. The inner side of the rubber sealing ring 5 abuts against the outer side surface of the plane bearing 4. The V-shaped, W-shaped or U-shaped oil sealing rib 51 has a good sealing effect.

[0022] The rubber sealing ring 5 is provided with a step ring 52 , which is integrally arranged with the rubber sealing ring 5 . The inner end surface of the step ring 52 abuts against the outer end surface of the plane bearing 4 . The step ring 52 wraps the plane bearing 4 to further seal the oil and reduce the outflow of the lubricating oil.

[0023] A screw is provided in the center of the plane bearing 4, and a fastening nut 6 and a self-locking nut 7 are provided at the end of the screw. The fastening nut 6 is located on the outside of the plane bearing 4. The lubricating oil in the outer bushing 1 moves outward, is blocked by the first sealing ring 2 on the left side, and enters the plane bearing 4 on the right side for lubrication. Part of the leakage enters between the fastening nut 6 and the plane bearing 4. The fastening nut 6 abuts against the plane bearing 4 or the gap is extremely small, which effectively seals the oil.

[0024] The first sealing ring 2 is an O-shaped sealing ring. The inner side surface of the first sealing ring 2 abuts against the screw rod. The O-shaped sealing ring reduces the contact area with the screw rod and reduces the friction when the screw rod is running.

[0025] A second sealing ring 8 and an annular groove matched with the second sealing ring 8 are provided on the left side of the outer bushing 1. The outer bushing 1 is placed at the end of the linear module, and the second sealing ring 8 abuts against the inside of the linear module to prevent dust from entering the linear module.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molded sealed bearing sleeve, characterized in that: The invention comprises an outer bushing (1), wherein the inner side of the outer bushing (1) is provided with a first sealing ring (2), a gasket (3), a plane bearing (4) and a rubber sealing ring (5) which is directly injection-molded between the outer bushing (1) and the plane bearing (4); the first sealing ring (2), the gasket (3) and the plane bearing (4) are abutted in sequence; the first sealing ring (2) is clamped on the inner side of the outer bushing (1); and the inner side of the outer bushing (1) is provided with an annular clamping groove which matches the first sealing ring (2), a first stepped groove which matches the gasket (3), a second stepped groove which matches the plane bearing (4) and a third stepped groove which matches the rubber sealing ring (5) in sequence from left to right.

2. The injection-molded sealed bearing sleeve according to claim 1, characterized in that: The outer side of the plane bearing (4) is provided with a plurality of annular grooves, the inner side of the rubber sealing ring (5) is provided with oil sealing ribs (51) matched with the grooves, and the inner side of the rubber sealing ring (5) abuts against the outer side of the plane bearing (4).

3. The injection-molded sealed bearing sleeve according to claim 2, characterized in that: The cross-sectional shape of the groove is V-shaped, W-shaped or U-shaped.

4. The injection-molded sealed bearing sleeve according to claim 3, characterized in that: The rubber sealing ring (5) is provided with a step ring (52), the step ring (52) and the rubber sealing ring (5) are integrally arranged, and the inner end surface of the step ring (52) abuts against the outer end surface of the plane bearing (4).

5. The injection-molded sealed bearing sleeve according to claim 4, characterized in that: A fastening nut (6) and a self-locking nut (7) are arranged on the outside of the plane bearing (4).

6. The injection-molded sealed bearing sleeve according to any one of claims 1 to 5, characterized in that: The first sealing ring (2) is an O-shaped sealing ring.

7. The injection-molded sealed bearing sleeve according to any one of claims 1 to 5, characterized in that: A second sealing ring (8) and an annular groove matched with the second sealing ring (8) are provided on the left side of the outer bushing (1).

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