Sealing type bearing

Abstract

The utility model relates to the field of sealed bearings, and discloses a sealed bearing which comprises an outer ring and an inner ring, a retainer is mounted on the outer wall of the inner ring, balls are mounted on the inner wall of the retainer, the retainer is mounted on the inner wall of the outer ring, a sealing gasket is inserted into the front end of the outer ring, a fixing sleeve is arranged at the front end of the outer ring, and a sealing gasket is mounted on the inner wall of the fixing sleeve. An outer fixing groove is formed in the inner wall of the fixing sleeve, an inner fixing groove is formed in the outer wall of the inner ring, a fixing ring is fixedly connected to the front end of the sealing gasket, an outer buckle is fixedly connected to the front end of the fixing ring, the outer buckle is clamped to the inner wall of the outer fixing groove, and an inner buckle is arranged on the inner wall of the sealing gasket. According to the sealing device, the first sealing ring and the second sealing ring are arranged, after the sealing gasket is installed, the first sealing ring and the second sealing ring can push the fixing ring outwards to fix the front position and the rear position of the sealing gasket, therefore, a gap can be prevented from being formed between the sealing gasket and the outer ring, and the sealing performance of the whole device is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the sealed bearing field especially relates to a sealed bearing. BACKGROUND

[0002] The bearing is an important part in contemporary mechanical equipment. The main function is to support the mechanical rotating body, reduce the friction coefficient in the movement process, and ensure the rotation accuracy. The existing bearing is generally divided into open type bearing and sealed bearing. Compared with the open type bearing, the sealed bearing is provided with a set of sealing pads at the front and rear ends respectively, so that dust and sundries can be prevented from entering the bearing interior, and the lubricating oil in the bearing interior can be prevented from flowing out. The existing sealing pad is generally made of silica gel material, and the sealing of the device is realized by relying on the elastic deformation capacity of the sealing pad.

[0003] According to the search, the Chinese patent publication No. CN219549387U discloses a sealed roller bearing, which comprises an outer ring, an inner ring, a sealing ring, rollers and a retainer. The outer periphery of the sealing ring is matched in the first sealing groove of the inner periphery of the outer ring, and the inner periphery of the sealing ring is matched in the second sealing groove of the inner ring. The inner side of the first sealing groove is provided with a first circumferential clamping groove, and the inner side of the second sealing groove is provided with a second circumferential clamping groove. The outer periphery of the sealing ring is fixedly installed with a first brush. The sealed roller bearing has the advantages of good sealing performance, solves the problem of reducing the entry of foreign matters by using a simple rubber sealing ring, and simultaneously the outer side of the sealing ring is in contact with the outer ring, which may cause resistance to the rotation of the outer ring, resulting in poor use effect of the bearing. In addition, the single rubber sealing ring is easy to fall off after long-term use of the bearing, resulting in poor sealing effect.

[0004] The device relies on the elastic deformation capacity of the sealing ring itself to realize sealing during use. However, the sealing ring can still move forward and backward after being fixed, which may cause the gap between the sealing ring and the outer ring to become larger, and liquid and dust may enter the bearing interior through the gap between the sealing ring and the outer ring, resulting in pollution in the bearing interior. The sealing performance of the overall device is poor. Therefore, a sealed bearing is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a sealed bearing, which aims to improve the problem of "using a sealing pad to seal the bearing, which may cause the sealing effect of the device to decrease due to the forward and backward movement of the sealing pad" in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a sealed bearing, including outer ring, inner race, its characterized in that: the outer wall of inner race is installed with retainer, the inner wall of retainer is installed with ball, the retainer is installed in the inner wall of outer ring, the front end of outer ring is inserted with sealing pad, the front end of outer ring is provided with fixed sleeve, the inner wall of fixed sleeve is provided with outer fixed groove, the outer wall of inner race is provided with inner fixed groove, the front end of sealing pad is fixedly connected with fixed ring, the front end of fixed ring is fixedly connected with outer buckle, the outer buckle is clamped in the inner wall of outer fixed groove, the inner wall of sealing pad is provided with inner buckle, and the inner buckle is clamped in the inner wall of inner fixed groove.

[0007] As further description of the above technical scheme:

[0008] The rear end of fixed ring is fixedly connected with sealing ring no.

[0009] As further description of the above technical scheme:

[0010] The front end of outer ring is provided with sealing groove no.

[0011] As further description of the above technical scheme:

[0012] The front end of outer ring is fixedly connected with sealing ring no.

[0013] As further description of the above technical scheme:

[0014] The intermediate position of sealing ring no. 2 and sealing pad is provided with sealing groove no. 2, and sealing ring no. 1 is inserted in the inner wall of sealing groove no. 2.

[0015] As further description of the above technical scheme:

[0016] The front end face of sealing ring no. 1 is provided as arc face.

[0017] As further description of the above technical scheme:

[0018] The rear end face of sealing ring no. 2 is provided as arc face.

[0019] As further description of the above technical scheme:

[0020] Sealing pad is provided with multiple groups, and another group sealing pad is inserted in the rear end of outer ring.

[0021] The utility model has the advantages of:

[0022] 1. The utility model discloses a sealing gasket is installed, and sealing ring no. 1 and sealing ring no. 2 are mutually extruded deformation, so sealing groove no. 1 and sealing groove no. 2 can be completely blocked, so the sealing of the inside of the device can be further prevented from leaking lubricating oil.

[0023] 2. The utility model discloses a sealing gasket is installed, and sealing ring no. 1 and sealing ring no. 2 are mutually extruded deformation, so sealing groove no. 1 and sealing groove no. 2 can be completely blocked, so the sealing of the inside of the device can be further prevented from leaking lubricating oil. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the three-dimensional structure schematic diagram of the whole device in the utility model;

[0025] Figure 2 It is the three-dimensional structure split schematic diagram of the whole device in the utility model;

[0026] Figure 3 It is the three-dimensional structure section schematic diagram of the whole device in the utility model;

[0027] Figure 4 It is the three-dimensional structure split schematic diagram of the whole device in the utility model; Figure 3 It is the three-dimensional structure split schematic diagram of the whole device in the utility model;

[0028] Legend:

[0029] 1, outer ring, 11, fixed sleeve, 12, sealing ring no. 1, 13, sealing groove no. 1, 14, outer fixed groove, 2, inner ring, 21, inner fixed groove, 3, sealing gasket, 31, outer buckle, 32, fixed ring, 33, inner buckle, 34, sealing ring no. 2, 35, sealing groove no. 2, 4, ball, 5, retainer. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0031] Refer to Figure 1 - Figure 3The utility model provides an embodiment: a sealed type bearing, including the outer ring 1 of fixing whole device, inner ring 2, the outer wall of inner ring 2 is installed with the retainer 5 for fixing ball 4, the inner wall of retainer 5 is installed with ball 4 for supporting outer ring 1 and inner ring 2, retainer 5 is installed in the inner wall of outer ring 1, and retainer 5 can play the effect of fixing ball 4 and controlling its interval, the front end of outer ring 1 is inserted with the sealing pad 3 for closing the front end opening of outer ring 1, and the sealing pad 3 is made of silica gel material, has the elastic deformation ability, the front end of outer ring 1 is provided with fixed sleeve 11, the inner wall of fixed sleeve 11 is provided with the outer fixed groove 14 for containing outer buckle 31, the outer wall of inner ring 2 is provided with the inner fixed groove 21 for containing inner buckle 33, the front end of sealing pad 3 is fixedly connected with the fixed ring 32 for supporting outer buckle 31, the front end of fixed ring 32 is fixedly connected with the outer buckle 31 for fixing the periphery of sealing pad 3, and the outer buckle 31 is clamped in the inner wall of outer fixed groove 14, and the fixed ring 32 can be fixed by clamping outer buckle 31 into the inside of outer fixed groove 14, the inner wall of sealing pad 3 is provided with the inner buckle 33 for fixing the central position of sealing pad 3, and the inner buckle 33 is clamped in the inner wall of inner fixed groove 21.

[0032] Referring to Figure 2 - Figure 4 The rear end of fixed ring 32 is fixedly connected with sealing ring two 34 for limiting the front-back movement of fixed ring 32, the front end of outer ring 1 is provided with sealing groove one 13 for containing sealing ring two 34, sealing ring two 34 is inserted in the inner wall of sealing groove one 13, and sealing ring two 34 will drive outer buckle 31 to be combined with the inner wall of outer fixed groove 14 by the elasticity of itself, and the front end of outer ring 1 is fixedly connected with sealing ring one 12 for cooperating sealing ring two 34 to increase the sealing property.

[0033] Referring to Figure 2 - Figure 4 The intermediate position of sealing ring two 34 and sealing pad 3 is provided with sealing groove two 35 for containing sealing ring one 12, sealing ring one 12 is inserted in the inner wall of sealing groove two 35, sealing ring two 34 and sealing ring one 12 will extrude each other after sealing pad 3 is installed, so that both will be deformed, and the inside of sealing groove one 13 and sealing groove two 35 can be filled by the deformation of sealing ring two 34 and sealing ring one 12, the front end face of sealing ring one 12 is set as arc face, the rear end face of sealing ring two 34 is set as arc face, sealing pad 3 is provided with multiple groups, another group of sealing pad 3 is inserted in the rear end of outer ring 1, and two groups of sealing pad 3 can seal the front and rear ends of outer ring 1 respectively.

[0034] Working principle: when installing, the outer ring 1, inner ring 2, ball 4, retainer 5 are installed first, then the sealing gasket 3 is inserted into the front end of the outer ring 1 and the elastic deformation of the sealing gasket 3 drives the outer buckle 31 to be inserted into the inside of the outer fixed groove 14, at the same time, the inner buckle 33 is inserted into the inside of the inner fixed groove 21, at this time, the sealing gasket 3 will be fixed, at this time, the sealing ring two 34 will push the fixed ring 32 through the elastic force of itself to drive the front end of the outer buckle 31 to adhere to the inner wall of the outer fixed groove 14, so that the connection between the sealing gasket 3 and the outer ring 1 can be prevented from being loose due to the front and back movement of the sealing gasket 3, at the same time, the sealing ring two 34 and the sealing ring one 12 will be extruded and deformed to fill the inner wall of the sealing groove one 13 and the sealing groove two 35, so that the sealing property of the inside of the device can be further increased.

[0035] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A sealed bearing comprising an outer ring (1), an inner ring (2), characterized in that: The outer wall of the inner ring (2) is provided with a retainer (5), the inner wall of the retainer (5) is provided with a ball (4), the retainer (5) is installed on the inner wall of the outer ring (1), the front end of the outer ring (1) is inserted with a sealing gasket (3), the front end of the outer ring (1) is provided with a fixing sleeve (11), the inner wall of the fixing sleeve (11) is provided with an outer fixing groove (14), the outer wall of the inner ring (2) is provided with an inner fixing groove (21), the front end of the sealing gasket (3) is fixedly connected with a fixing ring (32), the front end of the fixing ring (32) is fixedly connected with an outer buckle (31), the outer buckle (31) is clamped on the inner wall of the outer fixing groove (14), the inner wall of the sealing gasket (3) is provided with an inner buckle (33), and the inner buckle (33) is clamped on the inner wall of the inner fixing groove (21).

2. A sealed bearing according to claim 1, wherein: The rear end of the fixing ring (32) is fixedly connected with a sealing ring two (34).

3. A sealed bearing according to claim 2, wherein: The front end of the outer ring (1) is provided with a sealing groove one (13), and the sealing ring two (34) is inserted into the inner wall of the sealing groove one (13).

4. A sealed bearing according to claim 2, wherein: The front end of the outer ring (1) is fixedly connected with a sealing ring one (12).

5. A sealed bearing according to claim 4, wherein: The intermediate position of the sealing ring two (34) and the sealing gasket (3) is provided with a sealing groove two (35), and the sealing ring one (12) is inserted into the inner wall of the sealing groove two (35).

6. A sealed bearing according to claim 4, wherein: The front end surface of the sealing ring one (12) is provided as an arc surface.

7. A sealed bearing according to claim 3, wherein: The rear end surface of the sealing ring two (34) is provided as an arc surface.

8. A sealed bearing according to claim 1, wherein: The sealing gasket (3) is provided with a plurality of groups, and another group of the sealing gasket (3) is inserted into the rear end of the outer ring (1).

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