CN216407488U

CN216407488U - Bearing retainer ring riveting structure

Info

Publication number: CN216407488U
Application number: CN202123300682.2U
Authority: CN
Inventors: 赵荣多; 陈庆熙; 王冰; 曹一冰; 田文军; 邱弈辉; 黄天华
Original assignee: Tcb Bearing Manufacturing Co ltd
Current assignee: Tcb Bearing Manufacturing Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-04-29
Anticipated expiration: 2031-12-24

Abstract

The application provides a bearing retainer ring riveted structure relates to bearing technical field. The bearing retainer ring riveting structure comprises a bearing inner ring and retainer rings sleeved on the outer peripheral surfaces of two sides of the inner ring, wherein the outer peripheral surfaces of two sides of the inner ring are lower than the outer peripheral surface of the middle of the inner ring to form limiting steps, and straight-line knurled surfaces in interference fit with the inner surface of a retainer ring hole are respectively arranged on the outer peripheral surfaces of two sides of the inner ring close to the limiting steps. Compared with the prior art, this application makes the cooperation between the two inseparabler through being equipped with the straight line knurling face respectively on the outer peripheral face of inner circle both sides to with the terminal surface interference fit in the retaining ring, prevent effectively that the retaining ring pine from taking off, need not to set up one section outside axial extension's flange on the retaining ring, simplify the retaining ring structure, thereby shorten inner circle axial length, make bearing axial length shorter, more facilitate the use. The outer peripheral surfaces of the two sides of the inner ring are lower than the outer peripheral surface of the middle of the inner ring to form a limiting step, so that a positioning function is provided, and the positioning is more accurate when the check ring is installed.

Description

Bearing retainer ring riveting structure

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of bearings, in particular to a bearing retainer ring riveting structure.

[ background of the invention ]

The sealing performance of the bearing is an important performance requirement of the waterproof and dustproof bearing, particularly in the fields of engineering machinery, road building machinery, agricultural machinery and the like, and for the bearing operating in a muddy water environment, strict waterproof and dustproof requirements are provided for the sealing performance of the bearing, and the existing commonly used dustproof and waterproof bearing generally comprises an inner ring, an outer ring, a rolling body, a rubber sealing ring and a check ring. The retaining rings at the two ends of the bearing are combined together by interference fit with the outer diameter of the inner ring, and form a waterproof sealing structure with the rubber sealing ring, as shown in fig. 5-6. Because the cooperation of retaining ring and inner circle external diameter is elastic interference fit, in the operational environment that has muddy water, along with the dashing of muddy water, retaining ring and inner circle easily take place to become flexible, cause the retaining ring to drop or take place to interfere etc. with the sealing washer, cause the phenomenon that the bearing loses sealing performance and became invalid.

[ summary of the invention ]

An object of this application is to provide a bearing retainer ring riveted structure, can improve the bearing compactness, difficult pine takes off.

The application is realized by the following technical scheme:

the bearing retainer ring riveting structure comprises a bearing inner ring and retainer rings sleeved on the outer peripheral surfaces of two sides of the inner ring, wherein the outer peripheral surfaces of two sides of the inner ring are lower than the outer peripheral surface of the middle of the inner ring to form limiting steps, and straight-line knurled surfaces in interference fit with the inner surfaces of retainer ring holes are respectively arranged on the outer peripheral surfaces of two sides of the inner ring close to the limiting steps.

According to the riveting structure of the bearing retainer ring, the knurled cross section of the straight-line knurled surface is trapezoidal.

According to the riveting structure of the bearing retainer ring, the straight knurled surface is higher than the outer peripheral surfaces of two sides of the inner ring.

According to the riveting structure of the bearing retainer ring, the axial width of the knurled surface is 1-2 mm.

According to the riveting structure of the bearing retainer ring, the waterproof layer with waterproof performance is arranged on the inner side wall surface of the retainer ring.

The bearing retainer ring riveting structure further comprises an outer ring sleeved on the inner ring, and the outer end faces of two sides of the outer ring are attached to the waterproof layer.

The bearing retainer ring riveting structure further comprises a sealing ring which is sleeved on the inner ring and is positioned between the inner ring and the outer ring.

According to the bearing retainer ring riveting structure, the sealing groove capable of being embedded into the sealing ring is formed in the inner wall of the outer ring.

The bearing retainer ring riveting structure further comprises a ball arranged between the inner ring and the outer ring.

Compared with the prior art, the method has the following advantages:

1. this application is through being equipped with the straight line knurl face on the outer peripheral face of inner circle both sides respectively to with retaining ring hole surface interference fit, make the cooperation between the two inseparabler, prevent effectively that the retaining ring pine from taking off.

2. Through being equipped with the straight line knurl face respectively on the outer peripheral face of inner circle both sides and retaining ring cooperation, need not to set up one section outside axially extended flange on the retaining ring, can simplify the retaining ring structure, shorten inner circle axial length, make bearing axial length shorter, more succinct, more suitable.

3. The outer peripheral face of inner circle both sides is less than its middle outer peripheral face and is formed the spacing step, provides the locate function, and the location is more accurate when the retaining ring installation, prevents to install excessively.

4. The straight-line knurled surface is higher than the outer peripheral surfaces of the two sides of the inner ring, and the hardness of the retainer ring is lower than that of the inner ring, so that the straight lines of the knurled surface cut into the surface of the inner hole of the retainer ring when the retainer ring is pressed in, the retainer ring is tightly attached to the straight-line knurled surface, and the tightness between the retainer ring and the outer peripheral surfaces is greatly improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of a mating structure of a retainer ring and an inner ring according to an embodiment of the present application.

Fig. 2 is an enlarged schematic view of a point a in fig. 1 according to an embodiment of the present disclosure.

FIG. 3 is a schematic structural diagram of a bearing inner race according to an embodiment of the present application.

FIG. 4 is a schematic cross-sectional view of an inner race of a bearing according to an embodiment of the present application.

Fig. 5 is a schematic cross-sectional view of a prior art bearing.

Fig. 6 is an enlarged schematic view of fig. 5 at B.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1 to 6, an embodiment of the present application provides a bearing retainer ring riveting structure, including a bearing inner ring 1, and retainer rings 2 sleeved on outer peripheral surfaces of two sides of the inner ring 1, the outer peripheral surfaces of two sides of the inner ring 1 are lower than the outer peripheral surface of the middle thereof to form a limiting step 11, and straight-line knurled surfaces 12 in interference fit with the inner hole surface of the retainer ring 2 are respectively arranged on the outer peripheral surfaces of two sides of the inner ring 1 near the limiting step 11. Through be equipped with straight line knurl face 12 on the outer peripheral face of inner circle 1 both sides respectively to with retaining ring 2 interior terminal surface interference fit, make the cooperation between the two inseparabler, prevent more effectively that the retaining ring pine from taking off, need not to set up one section outside axially extended flange 7 on retaining ring 2, simplify retaining ring 2 structure, thereby shorten inner circle 1 axial length, make bearing axial length shorter, more succinct, more suitable. The outer peripheral surfaces of two sides of the inner ring 1 are lower than the outer peripheral surface of the middle of the inner ring to form a limiting step 12, so that a positioning function is provided, the positioning is more accurate when the retainer ring 2 is installed, and the excessive installation is prevented.

Further, as shown in fig. 3-4, the axial width of the straight-line knurled surface 12 is 1-2mm, and the straight-line knurled surface 12 with different axial widths can be processed according to the bearing inner ring 1 and the retainer ring 2 with different dimensions, so as to prevent the end face width of the straight-line knurled surface 12 from being too wide or too narrow. Specifically, in the embodiment of the present application, the end face width of the straight knurled surface 12 is 1.5 mm.

Furthermore, the straight-grain knurled surface 12 is higher than the outer peripheral surfaces of the two sides of the inner ring 1, and because the hardness of the retainer ring 2 is lower than that of the inner ring 1, the straight grains of the knurled surface cut into the inner hole surface of the retainer ring 2 when the retainer ring is pressed in, so that the retainer ring 2 and the straight-grain knurled surface 12 are tightly attached together, and the tightness between the retainer ring and the outer peripheral surfaces is greatly improved.

Further, as shown in fig. 1, a waterproof layer 21 with waterproof performance is arranged on the inner side wall surface of the retainer ring 2, specifically, the waterproof structure further comprises an outer ring 3 sleeved on the inner ring 1, and two side wall surfaces of the outer ring 3 are attached to the waterproof layer 21. The waterproof layer 21 is tightly attached to the outer side surface of the outer ring 3, so that friction force is provided, and the retainer ring is further prevented from being loosened. And retaining ring 2 and the inseparable laminating of outer lane 3 make the inside waterproof space that forms of bearing, the inside part of protection bearing that can be fine under the actual operational environment of bearing is like adverse circumstances such as humidity, mire, increases bearing waterproof performance.

Furthermore, as shown in fig. 1, the bearing further includes a sealing ring 4 sleeved on the inner ring 1 and located between the inner ring 1 and the outer ring 3, and balls 5 located between the inner ring 1 and the outer ring 3. Be equipped with on the 3 inner walls of outer lane and let the seal groove 31 of 4 embedding of sealing washer prevents that sealing washer 4 from droing, specifically, in this application embodiment, sealing washer 4 is the three-lip seal circle, with inner circle 1 forms multiple protective structure with 3 cooperations in outer lane, has dustproof and waterproof function, can adapt to adverse circumstances such as muddy humidity, farming, improves bearing performance.

Furthermore, a fixing screw hole 13 is further formed in the outer peripheral surface of one side of the inner ring 1, and a fixing screw 6 matched with the fixing screw hole 13 is arranged in the fixing screw hole 13.

To better understand the technical solution of the present embodiment, the working principle is as follows:

the utility model provides a bearing retainer ring riveted structure, includes bearing inner race 1 to and the retaining ring 2 of cover locating on the outer peripheral face of inner race 1 both sides, the outer peripheral face of inner race 1 both sides is less than the outer peripheral face of its centre and forms spacing step 11, be close to spacing step 11 punishment on the outer peripheral face of inner race 1 both sides do not be equipped with retaining ring 2 inner end face interference fit's straight line knurling face 12. Through be equipped with straight line knurl face 12 on the outer peripheral face of inner circle 1 both sides respectively to with the terminal surface interference fit in retaining ring 2, make the cooperation between the two inseparabler, prevent more effectively that the retaining ring pine from taking off, need not to set up one section flange on retaining ring 2, simplify retaining ring 2 structure, thereby shorten inner circle 1 axial length, make bearing axial length shorter, more succinct, more facilitate the use. The outer peripheral surfaces of two sides of the inner ring 1 are lower than the outer peripheral surface of the middle of the inner ring to form a limiting step 12, so that a positioning function is provided, the positioning is more accurate when the retainer ring 2 is installed, and the excessive installation is prevented.

When the bearing is installed, firstly, the ball 5 and the outer ring 3 are sleeved on the inner ring 1 of the bearing, then the sealing rings 4 are respectively sleeved on the outer peripheral surfaces of two sides of the inner ring 1, the sealing rings 4 are embedded into the sealing groove 31, finally, the retaining rings 2 are respectively sleeved on the outer peripheral surfaces of two sides of the inner ring 1, the retaining rings 2 are in interference fit with the knurled surface 12 and are attached to the limiting steps 11, and the installation is completed. The bearing has simple structure, tight matching of the retainer rings, dust prevention and sealing, and is not easy to loosen.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.

Claims

1. The utility model provides a bearing retainer ring riveted structure, includes bearing inner race (1) to and retaining ring (2) on the cover locates inner race (1) both sides outer peripheral face, its characterized in that, the outer peripheral face of inner race (1) both sides is less than its middle outer peripheral face and is formed with spacing step (11), be close to spacing step (11) punishment on the outer peripheral face of inner race (1) both sides respectively be equipped with retaining ring (2) downthehole internal surface interference fit's straight line knurl face (12).

2. A bearing retainer riveted construction according to claim 1, wherein the straight knurled surface (12) has a trapezoidal knurled shape.

3. A bearing retainer riveting structure according to claim 1, wherein the straight knurled surface (12) is higher than the outer peripheral surfaces of both sides of the inner ring (1).

4. A race ring riveted construction according to claim 3, characterized in that the end face width of the knurled surface (12) is 1-2 mm.

5. A bearing retainer riveting structure according to claim 1, wherein a waterproof layer (21) with waterproof performance is arranged on the inner side wall surface of the retainer (2).

6. A bearing retainer ring riveting structure according to claim 5, characterized by further comprising an outer ring (3) sleeved on the inner ring (1), wherein the outer end surfaces of two sides of the outer ring (3) are attached to the waterproof layer (21).

7. A bearing retainer riveting structure according to claim 6, characterized by further comprising a sealing ring (4) sleeved on the inner ring (1) and located between the inner ring (1) and the outer ring (3).

8. A race riveting arrangement according to claim 6, further comprising balls (5) between the inner (1) and outer (3) races.

9. A bearing retainer riveting structure according to claim 7, characterized in that the inner wall of the outer ring (3) is provided with a sealing groove (31) in which the sealing ring (4) can be embedded.