CN218235867U - Ball bearing limit structure, derailleur and vehicle - Google Patents

Abstract

The utility model relates to a ball bearing limit structure, derailleur and vehicle. The bearing comprises a ball bearing and a bearing seat sleeved on the ball bearing, wherein a clamping ring groove is formed on the outer side wall of the ball bearing in the circumferential direction at a position close to the rear end, a clamping ring is arranged in the clamping ring groove, and the front end surface of the clamping ring is abutted to the rear end surface of the bearing seat; the lateral wall of ball bearing is formed with at the position that is close to the front end hoop and keeps off the shoulder, the bearing frame is formed with along the axis direction and is used for the assembly the through-hole of ball bearing, the through-hole include with keep off preceding hole of shoulder matched with and back hole, through the snap ring is realized right with keeping off the shoulder jointly ball bearing's axial is spacing. The utility model provides a current ball bearing's limit structure have the big problem of the spatial arrangement degree of difficulty.

Description

Ball bearing limit structure, derailleur and vehicle

Technical Field

The utility model relates to an automotive transmission technical field, concretely relates to ball bearing limit structure, derailleur and vehicle.

Background

With the stricter and stricter requirements of domestic emission regulations, new power vehicles are bound to become the main direction of future vehicle development, and the development of transmissions applied to new power vehicles is also a great trend. And because the novel power type transmission is additionally provided with an electric unit and the like, the arrangement space of transmission parts such as a gear shaft system and the like is compressed, and the design difficulty of a limit structure of a support bearing is increased.

In the prior art, as shown in fig. 1, a more common limiting mode of a transmission ball bearing is as follows: and a pressure plate bearing is adopted and is fixed through a plurality of bolts. Specifically, the ball bearing 1 is fixedly connected with the pressing plate 01, and the pressing plate 01 is connected with the bearing seat 2 through the bolt 02, so that the ball bearing 1 is limited. However, in the limiting mode, due to the addition of the pressing plate and the plurality of bolts, the spatial arrangement difficulty is further increased, the matching requirement on related parts is also increased, and meanwhile, due to the fact that the number of parts is large, the problems of complex assembly and high manufacturing cost exist.

Disclosure of Invention

An object of the utility model is to provide a ball bearing limit structure, derailleur and vehicle to there is the big problem of the spatial arrangement degree of difficulty in the limit structure who solves current ball bearing, can also solve spare part a great deal of, leads to assembling complicated and problem that manufacturing cost is high.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows;

a ball bearing limiting structure comprises a ball bearing and a bearing seat sleeved on the ball bearing, wherein a clamping ring groove is formed on the outer side wall of the ball bearing in the circumferential direction at a position close to the rear end, a clamping ring is arranged in the clamping ring groove, and the front end face of the clamping ring is abutted to the rear end face of the bearing seat;

the lateral wall of ball bearing is formed with at the position that is close to the front end hoop and keeps off the shoulder, the bearing frame is formed with along the axis direction and is used for the assembly the through-hole of ball bearing, the through-hole include with keep off preceding hole of shoulder matched with and back hole, through the snap ring is realized right with keeping off the shoulder jointly ball bearing's axial is spacing.

According to the technical means, through the lateral wall at ball bearing at the position hoop formation snap ring groove that is close to the rear end, and set up the snap ring in the snap ring groove, make the preceding terminal surface of snap ring and the rear end face looks butt of bearing frame, simultaneously at the lateral wall of ball bearing the position hoop formation fender shoulder that is close to the front end, make the preceding hole that keeps off shoulder and bearing frame cooperate, thereby pass through the combined action of snap ring and fender shoulder, can realize spacing to ball bearing's axial, and keep off the shoulder and be located the downthehole of bearing frame, need not additionally to occupy the exterior space, and then effectively solved current ball bearing's limit structure and have the problem that the spatial arrangement degree of difficulty is big, and simultaneously, keep off the shoulder and be direct integrated into one piece on ball bearing's lateral wall, the quantity of spare part has effectively been reduced, the assembly process has been simplified, and production cost is reduced. The thickness of the snap ring can be adjusted, so that the axial displacement of the ball bearing can be controlled, and the axial displacement can be guaranteed within a reasonable range.

Preferably, the blocking shoulder is formed with at least one plane gap along the circumferential direction, the inside wall of the front inner hole of the bearing seat is formed with a plane protrusion matched with the plane gap, so that the ball bearing is circumferentially limited.

Through keeping off the shoulder and forming the plane breach along circumferencial direction, it is protruding to form the plane at the inside wall of the preceding hole of bearing frame simultaneously, through plane breach and the bellied mutually supporting of plane, can realize spacing to ball bearing's circumference.

Preferably, the outer side wall of the ball bearing is positioned between the snap ring groove and the retaining shoulder and the rear inner hole is in clearance fit or interference fit.

Preferably, the front inner hole and the rear inner hole of the bearing seat jointly form a stepped hole, and the diameter of the front inner hole is larger than that of the rear inner hole.

Through establishing into the diameter that is greater than the back hole with the diameter of preceding hole, can realize spacing the axial of ball bearing through the cooperation of keeping off the shoulder on the ball bearing and preceding hole, have simple process and feasible and low in manufacturing cost's advantage.

Preferably, the difference between the outer circle radius and the inner circle radius of the clamping ring is larger than the depth of the clamping ring groove.

The thickness through establishing into the depth that is greater than the snap ring groove with the snap ring, has effectively realized the preceding terminal surface of snap ring and the rear end face looks butt of bearing frame, and then guarantees the axial limiting displacement to ball bearing.

The utility model also provides a speed changer, include the ball bearing limit structure, the bearing frame is located gearbox housing.

The utility model also provides a vehicle, include the utility model discloses the derailleur.

The utility model has the advantages that:

the utility model discloses a ball bearing limit structure, through the lateral wall at ball bearing the position hoop formation snap ring groove that is close to the rear end, and set up the snap ring in the snap ring groove, make the preceding terminal surface of snap ring and the rear end face looks butt of bearing frame, simultaneously the lateral wall at ball bearing the position hoop formation that is close to the front end keeps off the shoulder, make the preceding hole that keeps off shoulder and bearing frame cooperate, thereby through the snap ring and the combined action that keeps off the shoulder, can realize spacing ball bearing's axial, and keep off the shoulder and be located the downthehole of bearing frame, need not additionally to occupy the exterior space, and then the limit structure who has effectively solved current ball bearing has the big problem of the spatial arrangement degree of difficulty, and simultaneously, keep off the shoulder and be direct integrated into one piece on ball bearing's lateral wall, the quantity of spare part has effectively been reduced, the assembly process has been simplified, the production cost is reduced, in automotive transmission technical field, and has popularization and application value.

Drawings

FIG. 1 is a schematic structural diagram of a ball bearing limiting structure in the prior art;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural diagram of a ball bearing;

FIG. 4 isbase:Sub>A cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a schematic structural view of a bearing seat;

fig. 6 is a cross-sectional view taken along line B-B of fig. 5.

Wherein, 1-ball bearing, 11-snap ring groove, 12-shoulder, 13-plane gap; 2-bearing seat, 21-front inner hole, 22-back inner hole and 23-plane bulge; 3-a snap ring; 01-pressing plate; 02-bolt.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings and preferred embodiments, and other advantages and effects of the invention will be easily understood by those skilled in the art from the disclosure in the specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Examples

As shown in fig. 2 to 6, a ball bearing limiting structure includes a ball bearing 1 and a bearing seat 2 sleeved on the ball bearing 1, a snap ring groove 11 is formed on the outer side wall of the ball bearing 1 in the circumferential direction at a position close to the rear end, a snap ring 3 is arranged in the snap ring groove 11, and the front end surface of the snap ring 3 abuts against the rear end surface of the bearing seat 2;

the lateral wall of ball bearing 1 is formed with in the position hoop that is close to the front end and keeps off shoulder 12, bearing frame 2 is formed with along the axis direction and is used for the assembly ball bearing 1's through-hole, the through-hole include with keep off before shoulder 12 matched with hole 21 and hole 22 after with, through snap ring 3 with keep off shoulder 12 realize jointly right ball bearing 1's axial is spacing.

The position hoop that is close to the rear end through the lateral wall at ball bearing forms the snap ring groove, and set up the snap ring in the snap ring groove, make the preceding terminal surface of snap ring and the rear end face looks butt of bearing frame, simultaneously the lateral wall at ball bearing forms the fender shoulder in the position hoop that is close to the front end, make the preceding hole that keeps off shoulder and bearing frame cooperate, thereby through the combined action of snap ring and fender shoulder, can realize spacing to ball bearing's axial, and keep off the shoulder and be located the downthehole of bearing frame, need not additionally to occupy the exterior space, and then effectively solved current ball bearing's limit structure and have the problem that the spatial arrangement degree of difficulty is big, and simultaneously, keep off the shoulder and be direct integrated into one piece on ball bearing's lateral wall, the quantity of spare part has effectively been reduced, the assembly process has been simplified, and the production cost is reduced.

Wherein, the thickness dimension of snap ring is adjustable to steerable ball bearing's axial displacement, and can guarantee that axial displacement is in a reasonable within range.

The retaining shoulder 12 is formed with at least one plane breach 13 along the circumferencial direction, and the inside wall of the preceding hole 21 of bearing frame 2 is formed with the plane arch 23 with plane breach 13 matched with to the realization is spacing to the circumference of ball bearing 1.

The outer side wall of the ball bearing 1 is in clearance fit or interference fit with the rear inner hole 22 at the position between the snap ring groove 11 and the retaining shoulder 12.

The front inner hole 21 and the rear inner hole 22 of the bearing seat 2 jointly form a stepped hole, and in order to effectively realize axial limiting of the ball bearing, the diameter of the front inner hole 21 is regarded as being larger than that of the rear inner hole 22.

In order to effectively realize the front end face of the snap ring and the rear end face of the bearing seat in butt joint and further ensure the axial limiting effect on the ball bearing, the difference between the outer circle radius and the inner circle radius of the snap ring 3 is set to be larger than the depth of the snap ring groove 11, namely the thickness of the snap ring 3.

The embodiment also provides a transmission, which comprises the ball bearing limiting structure, wherein the bearing seat is positioned on the transmission shell.

The present embodiment also provides a vehicle including the transmission in the present embodiment.

In the ball bearing limiting structure in the embodiment, during actual assembly, the ball bearing 1 is sleeved in the through hole of the bearing seat 2, the part of the outer side wall of the ball bearing 1, which is positioned between the snap ring groove 11 and the retaining shoulder 12, is in interference fit with the rear inner hole 22 of the bearing seat 2, the retaining shoulder 12 of the ball bearing 1 is matched with the front inner hole 21 of the bearing seat 2, then the snap ring 3 is installed in the snap ring groove 11, the front end surface of the snap ring 3 is abutted to the rear end surface of the bearing seat 2, and the ball bearing 1 is axially limited through the combined action of the snap ring 3 and the retaining shoulder 12; meanwhile, the plane notch 13 on the retaining shoulder 12 of the ball bearing 1 is matched with the plane bulge 23 formed on the inner side wall of the front inner hole 21 of the bearing seat 2, so that the ball bearing 1 is limited in the circumferential direction. Therefore, the problem that the axial and circumferential positioning modes of the existing ball bearing are complex is effectively solved, the number of parts is reduced, the assembly process is simplified, and the manufacturing cost of the transmission is reduced. Wherein, when the snap ring with adjustable size is adopted, the axial displacement of the ball bearing 1 can be ensured within a reasonable range.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitution or transformation made by the technical personnel in the technical field on the basis of the utility model is within the protection scope of the utility model.

Claims (7)

1. A ball bearing limiting structure comprises a ball bearing (1) and a bearing seat (2) sleeved on the ball bearing (1), and is characterized in that a clamping ring groove (11) is formed on the outer side wall of the ball bearing (1) in the circumferential direction at a position close to the rear end, a clamping ring (3) is arranged in the clamping ring groove (11), and the front end face of the clamping ring (3) is abutted to the rear end face of the bearing seat (2);

the lateral wall of ball bearing (1) is formed with in the position hoop that is close to the front end and keeps off shoulder (12), bearing frame (2) are formed with along the axis direction and are used for the assembly the through-hole of ball bearing (1), the through-hole include with keep off shoulder (12) matched with preceding hole (21) and back hole (22), through snap ring (3) and keep off shoulder (12) and realize jointly right the axial of ball bearing (1) is spacing.

2. The ball bearing limit structure of claim 1, characterized in that the stop shoulder (12) is formed with at least one plane notch (13) along the circumferential direction, and the inner side wall of the front inner hole (21) of the bearing seat (2) is formed with a plane protrusion (23) matched with the plane notch (13) to realize the circumferential limit of the ball bearing (1).

3. The ball bearing limit structure according to claim 1, characterized in that the part of the outer side wall of the ball bearing (1) between the snap ring groove (11) and the retaining shoulder (12) is in clearance fit or interference fit with the rear inner hole (22).

4. The ball bearing limit structure according to claim 1, characterized in that a front inner hole (21) and a rear inner hole (22) of the bearing seat (2) jointly form a stepped hole, and the diameter of the front inner hole (21) is larger than that of the rear inner hole (22).

5. A ball bearing spacing structure according to claim 1, characterized in that the difference between the outer and inner circular radii of the snap ring (3) is greater than the depth of the snap ring groove (11).

6. A variator comprising a ball bearing retainer as claimed in any one of claims 1 to 5, the bearing mount (2) being located on the variator housing.

7. A vehicle comprising the transmission of claim 6.

Images