Sealing structure of crossed roller bearing

Abstract

The utility model discloses a sealing structure of a crossed roller bearing, which relates to the technical field of bearing assembly and comprises a first framework, a sealing element, a second framework and a sealing gasket, the sealing piece is arranged between the first framework and the second framework, and the sealing gasket wraps the side, away from the first framework, of the second framework. The sealing gasket is elastic; according to the utility model, the elastic sealing gasket is coated on one side, far away from the first framework, of the second framework, so that when the sealing structure is mounted, the second framework and the bearing inner ring are isolated through the sealing gasket, a buffering effect is achieved, and the situation of deformation caused by direct contact between the second framework and the bearing inner ring is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly, in particular to a sealing structure of a cross roller bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0003] Cross roller bearings are a type of bearings that generally require a sealing structure to seal the inner and outer rings. In the existing sealing structure, the inner seal and the inner ring of the bearing are in metal-to-metal contact after assembly. When the inner seal is pressed into the bearing using an assembly tool, it is easy to produce a certain deformation, affecting the sealing effect.

[0004] In view of this, a sealing structure of a cross roller bearing is urgently needed. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model solves the problems with the following technical structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A sealing structure of a cross roller bearing, comprising: a first frame, a sealing element, a second frame and a sealing pad;

[0008] The sealing member is arranged between the first frame and the second frame, and the sealing gasket is coated on a side of the second frame away from the first frame;

[0009] The sealing gasket is elastic.

[0010] A further feature is that

[0011] The first frame and the second frame are both L-shaped.

[0012] The sealing member is provided with two mounting openings, and the two ends of the first frame are respectively clamped in the two mounting openings.

[0013] The inner side of the first frame is in contact with the sealing member.

[0014] The sealing member includes a plurality of sealing support portions extending from different angles toward one side of the second frame, and the suspended ends of the sealing support portions are in contact with the second frame.

[0015] A plurality of cavities are formed between the plurality of sealing support parts and the second frame, and the cavities are filled with sealing materials.

[0016] The sealing material is lubricating grease.

[0017] The sealing member is made of rubber.

[0018] The sealing gasket is made of rubber.

[0019] One end of the sealing gasket is provided with a slot, and one end of the second frame is locked in the slot.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] By covering the elastic sealing gasket on the side of the second frame away from the first frame, when the sealing structure is installed, the second frame and the inner ring of the bearing are isolated by the sealing gasket, which plays a buffering role and prevents the second frame from directly contacting the inner ring of the bearing and causing deformation;

[0022] When the sealing structure is applied to the other side of the bearing and connected to the robot reducer, and there is oil pressure in the cavity, in order to reduce the occurrence of oil leakage, the cavity is filled with sealing material to improve the sealing and reduce oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure when used in this embodiment;

[0024] Figure 2 Schematic diagram of the structure of the sealing member in this embodiment;

[0025] Figure 3 Schematic diagram of the structure of the sealing gasket in this embodiment.

[0026] In the figure: 1, first frame; 2, sealing member; 21, mounting opening; 22, sealing support portion; 3, second frame; 4, sealing pad; 41, slot; 5, cavity. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0029] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0030] refer to Figure 1 The sealing structure of a cross roller bearing shown in the figure includes: a first frame 1, a sealing member 2, a second frame 3 and a sealing gasket 4; the sealing member 2 is arranged between the first frame 1 and the second frame 3, and the sealing gasket 4 is coated on the side of the second frame 3 away from the first frame 1; the sealing gasket 4 is elastic, so that by coating the elastic sealing gasket 4 on the side of the second frame 3 away from the first frame 1, when the sealing structure is installed, the second frame 3 and the inner ring of the bearing are isolated by the sealing gasket 4, which plays a buffering role and avoids the second frame 3 from directly contacting the inner ring of the bearing and causing deformation. In the actual processing process, a sealing groove adapted to the sealing gasket 4 can be opened on the inner ring of the bearing to make the sealing gasket 4 easy to assemble.

[0031] refer to Figure 1 As shown, in order to further increase the contact area with the bearing, the first frame 1 and the second frame 3 are both L-shaped, so that the sealing area between the first frame 1 and the second frame 3 and the bearing is increased, thereby improving the effect.

[0032] refer to Figure 1 and Figure 2 As shown, in order to facilitate the installation of the sealing structure, two installation openings 21 are provided on the seal 2, and the two ends of the first skeleton 1 are respectively clamped in the two installation openings 21. In this way, during installation, the two ends of the first skeleton 1 are clamped in the two installation openings 21 to complete the assembly of the seal 2 and the first skeleton 1.

[0033] refer to Figure 1 As shown, in order to further improve the sealing effect, the inner side of the first frame 1 is fitted with the sealing member 2, thereby improving the sealing performance between the first frame 1 and the sealing member 2.

[0034] refer to Figure 1 and Figure 2As shown, the seal 2 includes a plurality of seal support parts 22 extending from different angles to one side of the second frame 3, and the suspension end of the seal support part 22 contacts the second frame 3. When the seal structure is applied to the other side of the bearing and is connected to the robot reducer, and there is oil pressure in the cavity, in order to reduce the occurrence of oil leakage, a plurality of cavities 5 are formed between the plurality of seal support parts 22 and the second frame 3, and the cavities 5 are filled with sealing materials, so that the sealing performance is improved and the oil leakage is reduced. The sealing material in this embodiment is grease, which improves the lubrication between the sealing structures and also has a sealing effect.

[0035] It is further optimized that, in the present embodiment, the seal 2 and the sealing gasket 4 are made of rubber, and in the actual production process, other materials with the same performance may also be selected for their production.

[0036] refer to Figure 1 and Figure 3 As shown, in order to facilitate the assembly of the second frame 3 and the sealing gasket 4, a clamping groove 41 is provided at one end of the sealing gasket 4, and one end of the second frame 3 is clamped in the clamping groove 41, so that the sealing gasket 4 is easily assembled on the second frame 3.

[0037] In summary, by wrapping the elastic sealing gasket 4 on the side of the second skeleton 3 away from the first skeleton 1, when the sealing structure is installed, the second skeleton 3 and the inner ring of the bearing are isolated by the sealing gasket 4, which plays a buffering role and prevents the second skeleton 3 from directly contacting the inner ring of the bearing and causing deformation.

[0038] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A sealing structure for a cross roller bearing, characterized in that: include: A first frame (1), a sealing member (2), a second frame (3) and a sealing gasket (4); The sealing member (2) is arranged between the first frame (1) and the second frame (3), and the sealing pad (4) is coated on a side of the second frame (3) away from the first frame (1); The sealing pad (4) is elastic.

2. The sealing structure of a cross roller bearing according to claim 1, characterized in that: The first frame (1) and the second frame (3) are both L-shaped.

3. The sealing structure of a cross roller bearing according to claim 2, characterized in that: The sealing member (2) is provided with two mounting openings (21), and the two ends of the first frame (1) are respectively clamped in the two mounting openings (21).

4. The sealing structure of a cross roller bearing according to claim 3, characterized in that: The inner side of the first frame (1) is in contact with the sealing member (2).

5. The sealing structure of a cross roller bearing according to claim 1, characterized in that: The sealing member (2) comprises a plurality of sealing support portions (22) extending from different angles toward one side of the second frame (3), and the suspended ends of the sealing support portions (22) are in contact with the second frame (3).

6. The sealing structure of a cross roller bearing according to claim 5, characterized in that: A plurality of cavities (5) are formed between the plurality of sealing support portions (22) and the second frame (3), and the cavities (5) are filled with sealing material.

7. The sealing structure of a cross roller bearing according to claim 6, characterized in that: The sealing material is lubricating grease.

8. The sealing structure of a cross roller bearing according to claim 1, characterized in that: The sealing element (2) is made of rubber.

9. The sealing structure of a cross roller bearing according to claim 1, characterized in that: The sealing pad (4) is made of rubber.

10. The sealing structure of a cross roller bearing according to claim 1, characterized in that: One end of the sealing pad (4) is provided with a slot (41), and one end of the second frame (3) is locked in the slot (41).

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