CN211259556U - Bearing axial locking and positioning structure - Google Patents

Abstract

A bearing axial locking and positioning structure relates to a positioning structure. The transmission shaft is sequentially sleeved with a first spacing sleeve, a first gear, a second spacing sleeve and a conical bearing, a mounting blind hole is formed in one end face of the transmission shaft, shaft inner hole threads are formed in the inner wall of the mounting blind hole, the threaded end of a locking screw is screwed into the mounting blind hole, and the conical bearing is axially positioned through the locking screw. The utility model discloses a locking screw location, the length of transmission shaft has been shortened, the longer not enough of original bearing axial positioning form derailleur length has been overcome, guaranteed the bearing under high rotational speed and great axial load, still can normally work simultaneously have the less demand in the whole car layout space of derailleur concurrently, optimize bearing axial positioning mode, it is more firm to make the location, in addition, the shaft section that the external screw thread among the prior art occupy shifts to the installation blind hole in, the shaft section space that lock nut occupy has been saved, can guarantee positioning strength again, and easily dismouting.

Description

Bearing axial locking and positioning structure

Technical Field

The utility model relates to a location structure, especially a bearing axial locking location structure.

Background

The bearing of the original speed changer of the mini car is axially positioned, and positioning structures such as a spring retainer ring, a locking nut and the like are generally adopted. As shown in fig. 1, when the shaft is long, an external thread is processed on the shaft, the locking nut 7 is screwed to position the bearing 6, meanwhile, in order to prevent the locking nut from loosening in the rotating process, a braking washer is added, key teeth in the braking washer are placed in a key groove of the shaft, and one of teeth on the outer ring is bent into a notch of the nut. In the positioning mode, the bearing can bear higher rotating speed and larger axial load, but the total length of the speed changer is increased, and the speed changer is not suitable for a front-wheel drive speed changer with smaller overall arrangement space and has the problem of difficult disassembly and assembly along with the increase of the total length of the speed changer; and under the condition that the shaft is short and the thread processing on the shaft diameter is difficult, the spring retainer ring with the rectangular cross section can be used for positioning. Although the total length of the transmission can be shortened by positioning the spring retainer ring, the assembly and disassembly are convenient, and the manufacture is simple, the spring retainer ring is only suitable for working conditions that the rotating speed of the bearing is low and the axial load is small. Therefore, the existing axial locking and positioning structure of the bearing cannot meet the requirements of small-space arrangement and high rotating speed.

Disclosure of Invention

For solving the problem that exists among the background art, the utility model provides a bearing axial locking location structure.

The purpose is achieved, the utility model adopts the following technical proposal: the utility model provides a bearing axial locking location structure, includes spacer sleeve one, transmission shaft, gear one, gear two, spacer sleeve two, taper bearing, locking screw, the cover is equipped with spacer sleeve one, gear two, spacer sleeve two and taper bearing in proper order on the transmission shaft, and a terminal surface of transmission shaft is equipped with the installation blind hole, the inner wall of installation blind hole is equipped with axle hole screw thread, locking screw's screw thread end screw in the installation blind hole, taper bearing passes through the capable axial positioning of locking screw.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a locking screw location, the length of transmission shaft has been shortened, the longer not enough of original bearing axial positioning form derailleur length has been overcome, guaranteed the bearing under high rotational speed and great axial load, still can normally work simultaneously have the less demand in the whole car layout space of derailleur concurrently, optimize bearing axial positioning mode, it is more firm to make the location, in addition, the shaft section that the external screw thread among the prior art occupy shifts to the installation blind hole in, the shaft section space that lock nut occupy has been saved, can guarantee positioning strength again, and easily dismouting.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

The first embodiment is as follows: as shown in fig. 2, the utility model discloses a bearing axial locking location structure, including spacer sleeve 1, transmission shaft 2, gear 3, gear two 4, spacer sleeve two 5, conical bearing 6, locking screw 8, the cover is equipped with spacer sleeve 1, gear 3, gear two 4, spacer sleeve two 5 and conical bearing 6 in proper order on the transmission shaft 2, and a terminal surface of transmission shaft 2 is equipped with installation blind hole 9, the inner wall of installation blind hole 9 is equipped with axle hole screw thread, locking screw 8's threaded end screw in the installation blind hole 9, conical bearing 6 passes through the capable axial positioning of locking screw 8.

The second embodiment is as follows: as shown in fig. 1, this embodiment is a further description of the first embodiment, when the locking screw 8 is screwed, a gap exists between the end surface of the locking screw 8 and the end surface of the transmission shaft 2, so as to ensure that the locking screw 8 can be screwed in continuously, thereby achieving the purpose of fixing the bearing 6.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms of embodiment without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (2)

1. The utility model provides a bearing axial locking location structure, includes spacer sleeve (1), transmission shaft (2), gear (3), gear two (4), spacer sleeve two (5) and taper bearing (6), its characterized in that: location structure still includes locking screw (8), the cover is equipped with spacer sleeve (1), gear (3), gear two (4), spacer sleeve two (5) and conical bearing (6) in proper order on transmission shaft (2), and a terminal surface of transmission shaft (2) is equipped with installation blind hole (9), the inner wall of installation blind hole (9) is equipped with axle hole screw thread, the screw thread end screw in of locking screw (8) in installation blind hole (9), conical bearing (6) are through locking screw (8) line axial positioning.

2. The axial locking and positioning structure for the bearing of claim 1, wherein: when the locking screw (8) is screwed tightly, a gap is reserved between the end surface of the locking screw (8) and the end surface of the transmission shaft (2).

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