CN202790147U - Axial positioning structure for upper automobile bearing - Google Patents

Abstract

The utility model provides an axial positioning structure for an upper automobile bearing, and belongs to the technical field of automobiles. The axial positioning structure solves the technical problems that the conventional axial positioning structure for the upper automobile bearing is not very convenient to mount and dismount and the like. A bearing comprises a bearing inner ring sleeved on the end part of a rotation shaft. The positioning structure comprises a barrier plate which can be pressed against the external end surface of the bearing inner ring; the barrier plate is connected onto the rotating shaft in a dismountable way by a connection structure between the barrier plate and the rotation shaft; and the inner end face of the bearing inner ring is pressed against a convex edge of the rotation shaft. The axial positioning structure has the advantages of convenience for mounting and dismounting, simple structure, reliability in fixation and the like.

Description

Axial Positioning Structure of Bearing on Automobile

technical field

The utility model belongs to the technical field of machinery and relates to an axial positioning structure of an upper bearing of an automobile.

Background technique

Bearings are components that fix and reduce the friction coefficient of loads during mechanical transmission. It can also be said that when other parts move relative to each other on the shaft, they are used to reduce the friction coefficient during power transmission and maintain the center position of the shaft. fixed parts. Bearings are an important part of modern mechanical equipment. Its main function is to support the mechanical rotating body to reduce the friction coefficient of the mechanical load during the transmission process of the equipment. According to the different friction properties of moving elements, bearings can be divided into two types: rolling bearings and sliding bearings.

At present, the axial limit method of the bearing inner ring used in automobiles is generally to design a snap ring groove on the shaft, and then use a snap ring to limit the axial position. Due to the manufacturing tolerance of the parts themselves, the snap ring is used to limit the position , there is inevitably an axial gap, which will eventually cause axial movement and affect the working accuracy.

A large number of bearings are used in the main components such as engines and transmissions in automobiles. Since most of these bearings are lapped at both ends or plugged into the corresponding assembly housing, the rotating shaft is connected between the bearings. In this structure , the position of the bearing is generally at both ends of the shell or close to the outer layer of the shell. For the assembly with many parts and high matching precision, if a certain bearing is found to be loose, the traditional positioning method will It is necessary to disassemble the assembly to adjust or replace, which greatly affects the production cost and maintenance cost.

In the patent (CN 102312926A), a direct shaft bearing positioning structure is disclosed, which includes a positioning sleeve arranged on the direct shaft, positioning sleeves are provided on both sides of the bearing, and the front end of the positioning sleeve is provided with an outer diameter arm positioning sleeve The stepped cylinder with a small outer diameter has an interference fit with the straight shaft. The stepped cylinder of one positioning sleeve abuts against one side of the bearing, and the bottom end surface of the other positioning sleeve abuts against the other side of the bearing. This patent clamps the bearing to achieve positioning through two positioning sleeves fixed on the straight shaft, which has the advantage of reliable positioning, but the use of the positioning sleeve requires a supporting frame or a certain assembly shell that matches the bearing, that is, It is said that the use of this positioning method may require some reprocessing on the support frame or an assembly shell before it can be used, which will not only affect the matching accuracy of the bearing, but also limit the versatility of this method to a large extent. On the one hand, due to the interference fit between the stepped cylinder and the straight shaft, the positioning structure is inconvenient for disassembly and assembly of the bearing and the housing.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems existing in the existing technology, and the utility model provides a bearing axial positioning structure which is convenient for disassembly and assembly.

The purpose of this utility model can be achieved through the following technical proposals: an axial positioning structure of a bearing on an automobile, the bearing includes a bearing inner ring sleeved at the end of the rotating shaft, the feature is that the positioning structure includes a The baffle plate on the outer end surface of the inner ring, the baffle plate and the rotating shaft are detachably connected to the rotating shaft through a connection structure, and the inner end surface of the inner ring of the bearing is against the convex edge provided on the rotating shaft .

The working principle of the utility model is: in many structures on the automobile, the rotating body will appear in the middle of the rotating shaft, and the two ends of the rotating shaft are provided with bearings and are close to or placed on the housing. In the utility model, the inner end surface of the inner ring of the bearing is It abuts against the convex edge on the bearing, and its outer end surface uses a baffle to abut against it, wherein there is a connection structure between the baffle and the rotating shaft, which can make the baffle dismountable, which ensures the convenience of disassembly and assembly of the bearing sex.

In the above-mentioned axial positioning structure of the upper bearing of the automobile, the connecting structure includes a threaded hole axially opened at the end of the rotating shaft and a screw that matches the threaded hole, and the baffle is fixedly connected to one end of the screw . The connection method of bolts and screw holes can not only realize the detachment of the baffle, but also allow adjustment after the bearing is loose. Since the baffle is at the outer end of the bearing, it is very convenient to adjust and disassemble.

In the above-mentioned axial positioning structure of a bearing on an automobile, as another technical solution, a gasket is provided between the baffle plate and the end face of the inner ring of the bearing, and the gasket can abut against the bearing on the outer face of the inner ring. When the outermost end of the rotating shaft is far away from the bearing so that the baffle cannot abut against the inner ring of the bearing, the spacer is used to fill the distance between the baffle and the inner ring of the bearing. The thickness of the gasket can be adjusted by replacement.

In the above-mentioned axial positioning structure of the upper bearing of the automobile, as another technical solution, the connection structure includes external threads provided radially at the end of the rotating shaft, and the baffle is provided with external threads. Fitting internal thread. The outer thread is provided on the outer end of the rotating shaft, and the inner thread is provided on the baffle, which can solve the problem that the baffle cannot directly abut against the inner ring of the bearing when the bearing is far away from the outer end of the rotating shaft.

In the above-mentioned axial positioning structure of the upper bearing of the automobile, the outer edge of the baffle is disc-shaped, and the baffle is provided with an inner hexagon. The outer edge of the baffle is disc-shaped and leans against the inner ring of the bearing, so that the contact surface between the baffle and the inner ring of the bearing is larger, and the limit is reliable. The inner hexagon can facilitate the disassembly and assembly of the baffle and the bearing. disassembly.

Compared with the prior art, the utility model has the following advantages:

1. The baffle is against the outer end of the inner ring of the rotating shaft, and the baffle is detachably connected to the rotating shaft. This structure facilitates the disassembly and assembly of the bearing.

2. The baffle plate is in the shape of a disc and evenly leans against the inner ring of the bearing, so that the positioning of the bearing is reliable.

3. The distance between the baffle plate and the inner ring of the bearing can be adjusted by a gasket or the baffle plate is sleeved on the shaft to eliminate the distance between the baffle plate and the inner ring of the bearing, which greatly improves the versatility of the positioning structure .

Description of drawings

Fig. 1 is a schematic cross-sectional view of the axial positioning structure of the upper bearing of the automobile in the first embodiment.

Fig. 2 is a schematic cross-sectional view of the axial positioning structure of the upper bearing of the automobile in the second embodiment.

Fig. 3 is a schematic cross-sectional view of the axial positioning structure of the upper bearing of the automobile in the third embodiment.

In the figure, 1, rotating shaft; 2, bearing inner ring; 3, baffle plate; 41, threaded hole; 42, screw rod; 5, convex edge; 6, gasket; 71, external thread; 72, internal thread.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

Embodiment one:

As shown in Figure 1, the bearing includes a bearing inner ring 2 sleeved at the end of the rotating shaft 1. This positioning structure includes a baffle 3 that can abut against the outer end surface of the bearing inner ring 2. The baffle 3 and the rotating shaft 1 pass through A connecting structure detachably connects the baffle plate 3 to the rotating shaft 1, and the inner end surface of the bearing inner ring 2 abuts against the convex edge 5 provided on the rotating shaft 1, wherein the connecting structure includes threads axially provided at the end of the rotating shaft 1 The hole 41 and the screw rod 42 matched with the threaded hole 41, the baffle plate 3 is fixedly connected to one end of the screw rod 42, the connection mode of the bolt and the screw hole can not only realize the detachment of the baffle plate 3, but also adjust the bearing after the bearing is loose. The baffle plate 3 is at the outer end of the bearing, so it is very convenient to adjust and disassemble. The outer edge of the baffle plate 3 is disc-shaped. On the bearing inner ring 2, the contact surface between the baffle plate 3 and the bearing inner ring 2 is larger, so that the limit is reliable, and the inner hexagon can facilitate the disassembly and assembly of the baffle plate 3, and also facilitates the disassembly and assembly of the bearing.

Embodiment two:

As shown in Figure 2, the content of this embodiment is generally the same as that of the first embodiment, the difference is: when the outermost end of the rotating shaft 1 is far away from the bearing so that the baffle 3 cannot abut against the inner ring 2 of the bearing, A gasket 6 is provided between the baffle plate 3 and the end face of the bearing inner ring 2, and the gasket 6 can abut against the outer end face of the bearing inner ring 2, and the gasket 6 is used to fill the baffle plate 3 and the bearing inner ring 2 The distance, the thickness of the gasket 3 can be adjusted by replacement.

Embodiment three:

As shown in Figure 3, the content of this embodiment is generally the same as that of Embodiment 1, the difference is that the connection structure includes an external thread 71 radially provided at the end of the rotating shaft 1, and the baffle 3 is provided with an external thread 71 to cooperate with The internal thread 72, the external thread 72 is provided on the outer end of the rotating shaft 1, and the internal thread 72 is provided on the baffle 3, which can solve the problem that the baffle 3 cannot directly abut against the bearing when the bearing is far from the outer end of the rotating shaft 1 Question on Circle 2.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (5)

1. the axial positioning structure of an automobile upper bearing (metal), bearing comprises the bearing inner race (2) that is set in rotating shaft (1) end, it is characterized in that, this position structure comprises the baffle plate (3) that can be resisted against on bearing inner race (2) exterior edge face, by a linkage structure baffle plate (3) is detachably connected in the rotating shaft (1) between described baffle plate (3) and the rotating shaft (1), the interior edge face of described bearing inner race (2) is resisted against on the convex edge (5) of offering in the rotating shaft (1).

2. the axial positioning structure of automobile upper bearing (metal) according to claim 1, it is characterized in that, described linkage structure comprises the tapped hole (41) that axially is opened in rotating shaft (1) end and the screw rod (42) that cooperates with tapped hole (41), and described baffle plate (3) is connected in an end of screw rod (42).

3. the axial positioning structure of automobile upper bearing (metal) according to claim 2, it is characterized in that, be provided with a pad (6) between the end face of described baffle plate (3) and bearing inner race (2), described pad (6) can be resisted against on the exterior edge face of bearing inner race (2).

4. the axial positioning structure of automobile upper bearing (metal) according to claim 1, it is characterized in that, described linkage structure comprises the outside thread (71) that radially is opened in rotating shaft (1) end, and described baffle plate (3) is provided with the internal thread (72) that cooperates with outside thread (71).

5. according to claim 1 and 2 or the axial positioning structure of 3 or 4 described automobile upper bearing (metal)s, it is characterized in that the outer of described baffle plate (3) is in the form of annular discs, described baffle plate (3) is provided with interior hexagonal.

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