CN221097119U - Multi-tooth disc spring retainer ring and mounting structure thereof - Google Patents

Abstract

The utility model relates to a multi-tooth disc spring retainer ring which comprises a body, wherein the body is of an elastic retainer ring structure, a plurality of butterfly teeth are circumferentially distributed on the outer edge of the body, and the butterfly teeth extend outwards in the radial direction by taking the center of the body as the center of the circle and incline to one side of the axial direction of the body. The axial clearance between the part and the part can be eliminated, so that the axial movement of the part is prevented. The problem of spare part axial float when effectively solving the exclusive use circlip for the axle, also solved simultaneously that dish spring must make up the complete set with circlip or screw fastening structure simultaneously and use and lead to assembly structure complicacy, problem that the cost increases. The utility model also relates to a mounting structure of the multi-tooth disc spring retainer ring, which effectively eliminates the axial gap between the flywheel and the mounting groove, improves the assembly precision, simultaneously avoids the power loss of the flywheel and ensures the transmission efficiency.

Description

Multi-tooth disc spring retainer ring and mounting structure thereof

Technical Field

The utility model relates to the technical field of axial assembly parts, in particular to a multi-tooth disc spring retainer ring and an installation structure thereof.

Background

The circlip for the shaft is an axial movement mounted on the shaft groove for fixing parts, the inner diameter of the circlip is slightly smaller than the diameter of the assembled shaft. During installation, a clamp spring pliers are needed, a pliers mouth is inserted into a pliers hole of the retainer ring, the retainer ring is expanded, and the retainer ring can be placed into a pre-processed shaft groove; has the characteristics of simple structure, convenience, reliability, small occupied space and the like. Referring to CN213083414U, a driving assembly for an electric bicycle and the electric bicycle, the flywheel mounting structure is disclosed, and the flywheel is axially positioned by using a clamp spring, namely an elastic retainer ring for a shaft. The problem that it exists is that, when the circlip is used alone, because factors such as machining deviation influence, for the assembly of being convenient for, have certain clearance between spare part and the retaining ring draw-in groove of epaxial assembly, lead to the spare part axial float after the assembly like this, influence work transmission efficiency and increase the loss. Therefore, when in use, parts such as gaskets, springs and the like are additionally arranged between the retainer ring and the bearing or the shaft end, and axial deflection or shaking is prevented by compressing and increasing friction force.

The disk spring is conical disk-shaped, and is different from other conventional snap springs, the disk spring is compressed and deformed by bearing static or dynamic load acting along the axial direction at the upper inner edge and the lower outer edge, so that axial pressure is provided for parts on the shaft, and the parts are prevented from moving and static axially moving. According to the load size, the device can be used singly or in series or in parallel, and has the characteristics of large load, small space, convenience in combination and use and the like. The problem that it has is that must be simultaneously with circlip or screw fastening structure combination complete sets use when using, just can reach axial positioning accuracy, leads to assembly structure complicacy, and increases the cost.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a multi-tooth disc spring retainer ring and an installation structure thereof, and single parts are adopted to realize axial positioning and compaction.

The technical scheme adopted by the utility model is as follows:

The utility model provides a multi-tooth disc spring retainer ring, which comprises a body, wherein the body is of an elastic retainer ring structure, a plurality of butterfly teeth are circumferentially distributed on the outer edge of the body, and the butterfly teeth extend outwards in the radial direction by taking the center of the body as the center of the circle and incline to one side of the axial direction of the body.

The further technical scheme is as follows:

Each butterfly tooth is bent into an arc shape towards one axial side of the body.

The butterfly teeth are symmetrically distributed by taking the central line of the opening of the elastic retainer ring structure as the center.

The two ends of the opening of the elastic retainer ring structure are respectively provided with one butterfly tooth, and the butterfly teeth are provided with mounting holes.

Adopts spring steel material.

The utility model further provides a mounting structure of the multi-tooth disc spring retainer ring, which comprises a motor side cover connecting seat and a flywheel, wherein a driving shaft is arranged on the motor side cover connecting seat and is matched with the flywheel through spline transmission, a mounting groove is formed in the end part of the driving shaft, the body is clamped in the mounting groove, and the outer edge of each butterfly tooth is used for propping against the end face of the flywheel to axially press the flywheel on the driving shaft.

The beneficial effects of the utility model are as follows:

The multi-tooth disc spring retainer ring is simple in structure, convenient to process and install and small in occupied space. The axial clearance between the part and the part can be eliminated, so that the axial movement of the part is prevented. The problem of spare part axial float when effectively solving the exclusive use circlip for the axle, also solved simultaneously that dish spring must make up the complete set with circlip or screw fastening structure simultaneously and use and lead to assembly structure complicacy, problem that the cost increases.

The mounting structure of the multi-tooth disc spring retainer ring effectively eliminates the axial gap between the flywheel and the mounting groove, improves the assembly precision, simultaneously avoids the power loss of the flywheel and ensures the transmission efficiency.

Additional features and advantages of the utility model will be set forth in the description which follows, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic structural diagram of a multi-tooth disc spring retainer ring according to embodiment 1 of the present utility model.

Fig. 2 is an exploded view showing a multi-tooth disc spring retainer ring mounting structure according to embodiment 2 of the present utility model.

Fig. 3 is an assembly schematic diagram of a multi-tooth disc spring retainer ring mounting structure according to embodiment 2 of the present utility model.

Fig. 4 is a diagram showing a comparison of a multi-tooth disc spring retainer ring mounting structure according to embodiment 2 of the present utility model and a flywheel mounting structure according to the related art.

In the figure: 1. butterfly teeth; 2. a body; 3. a mounting hole; 4. a mounting groove; 5. a drive shaft; 6. a flywheel; 7. a motor side cover connecting seat; 8. multi-tooth disc spring retainer ring.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

Example 1

Referring to fig. 1, the present embodiment provides a multi-tooth disc spring retainer ring, which includes a body 2, the body 2 is a circlip structure, a plurality of butterfly teeth 1 are circumferentially distributed on the outer edge of the body 2, and the butterfly teeth 1 extend radially outwards with the center of the body 2 as the center of the circle and incline to one side of the axial direction of the body 2.

In fig. 1, (a) and (b) are respectively a perspective view and a front view of the multi-tooth disc spring retainer ring.

Each butterfly tooth 1 is curved in an arc shape toward one axial side of the body 2.

The butterfly teeth 1 are symmetrically distributed by taking the central line of the opening of the elastic retainer ring structure as the center.

The two ends of the opening of the elastic retainer ring structure are respectively provided with a butterfly tooth 1, and the butterfly tooth 1 is provided with a mounting hole 3.

The multi-tooth disc spring retainer ring of the embodiment can be made of spring steel. In particular, chrome-manganese alloy steel can be used.

The advantages of the traditional circlip for the shaft and the butterfly spring are combined, the axial positioning and the axial compression are integrated on one piece, the body 2 is used for axially positioning the part to be fixed, the butterfly tooth 1 axially compresses the part to be fixed through certain elastic deformation, and the function of eliminating axial gaps between the butterfly tooth and the part to be fixed is achieved.

The butterfly teeth 1 are distributed at intervals along the circumferential direction of the body 2 to form a discontinuous disc spring structure, which is more convenient for (manual) assembly.

Example 2

Referring to fig. 2 and 3, this embodiment provides a mounting structure of a multi-tooth disc spring retainer ring in embodiment 1, including a motor side cover connecting seat 7 and a flywheel 6, a driving shaft 5 is disposed on the motor side cover connecting seat 7 and is matched with the flywheel 6 through spline transmission, a mounting groove 4 is disposed at an end of the driving shaft 5, a body 2 of the multi-tooth disc spring retainer ring 8 is clamped in the mounting groove 4, axial movement of the flywheel 6 is prevented, and an outer edge of the butterfly tooth 1 axially abuts against an end face of the flywheel 6 to compress the flywheel 6, so that an axial gap between the body 2 and the flywheel 6 can be eliminated.

Fig. 3 (a) and (b) are a perspective view and a front view of the mounting structure of the multi-tooth disc spring retainer ring, respectively.

Wherein, set up mounting hole 3 on being located butterfly tooth 1 at body 2 opening part both ends for with jump ring pincers cooperation, accomplish the installation of multi-tooth formula dish spring retaining ring 8.

In order to verify the effectiveness of the installation structure of the multi-tooth disc spring retainer ring of the embodiment, compared with a driving assembly for an electric bicycle and a flywheel installation structure (hereinafter referred to as a "conventional structure") disclosed by a "CN 213083414U" in the background art, under the same conditions of other structures, dimensions and the like, as shown in fig. 4 (a), the installation structure is a schematic diagram of the "conventional structure", which adopts a conventional snap spring to perform axial positioning only, but cannot eliminate an axial gap between the flywheel and a motor connecting seat, and the flywheel is easy to generate axial movement during working. Referring to fig. 4 (b), the mounting structure of embodiment 2 adopts the multi-tooth disc spring retainer ring, which not only realizes the axial positioning of the flywheel, but also provides axial pressure to the flywheel, eliminates axial gaps, and improves assembly accuracy, thereby effectively preventing the flywheel from moving, avoiding power loss, and ensuring transmission efficiency.

Those of ordinary skill in the art will appreciate that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (4)

1. The mounting structure of the multi-tooth disc spring retainer ring is characterized in that the structure of the multi-tooth disc spring retainer ring comprises a body (2), the body (2) is of an elastic retainer ring structure, a plurality of butterfly teeth (1) are distributed on the outer edge of the body (2) along the circumferential direction, and the butterfly teeth (1) extend outwards along the radial direction by taking the center of the body (2) as the center of the circle and incline to one side of the axial direction of the body (2);

each butterfly tooth (1) is bent to an arc shape towards one axial side of the body (2);

The mounting structure comprises a motor side cover connecting seat (7) and a flywheel (6), wherein a driving shaft (5) is arranged on the motor side cover connecting seat (7), the motor side cover connecting seat is matched with the flywheel (6) through spline transmission, a mounting groove (4) is formed in the end part of the driving shaft (5), the body (2) is used for being clamped in the mounting groove (4), the outer edge of the butterfly-shaped tooth (1) is used for propping against the end face of the flywheel (6), and the flywheel (6) is axially pressed on the driving shaft (5).

2. The mounting structure of a multi-tooth disc spring retainer according to claim 1, wherein the plurality of butterfly teeth (1) are symmetrically distributed with respect to a center line at an opening of the circlip structure.

3. The mounting structure of the multi-tooth disc spring retainer ring according to claim 1, wherein two ends of the opening of the circlip structure are respectively provided with one butterfly tooth (1), and the butterfly tooth (1) is provided with a mounting hole (3).

4. The mounting structure of a multi-tooth disc spring retainer of claim 1, wherein the multi-tooth disc spring retainer is made of spring steel.