CN202334097U - Bearing structure of vibration motor - Google Patents

Abstract

A vibration motor bearing structure relates to a vibration motor. At present, the internal bearing structure of the end cover of the domestic motor industry is diversified, each with its own disadvantages and advantages. The bearing structure cannot simultaneously take into account simple disassembly, convenient oil filling, strong integrity, and high stability. The utility model comprises an end cover provided with a bearing chamber and a bearing arranged in the end cover, and is characterized in that: a bearing cover is provided on the outside of the bearing, a circlip slot is provided on the end cover outside the bearing cover, and the circlip slot can be embedded with a The circlip against which the bearing cover is opposed, and an annular oil seal with an interference fit with the rotating shaft is arranged in the inner ring of the bearing cover, and the outer ring of the oil seal is in clearance fit with the inner ring of the bearing cover. The annular oil seal and the bearing cover are in clearance fit, and the sealing performance is good. The circlips are embedded in the holes on the end cover to fix all the parts inside the end cover, improve the overall stability of the motor, and are easy to disassemble and assemble.

Description

A vibration motor bearing structure

technical field

The utility model relates to a vibration motor.

Background technique

At present, the internal bearing structure of the end cover of the domestic motor industry is diversified, each with its own disadvantages and advantages. The bearing structure cannot simultaneously take into account simple disassembly, convenient oil filling, strong integrity, and high stability.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to perfect and improve the existing technical scheme, and provide a vibration motor bearing structure, so as to achieve the advantages of simple disassembly and assembly, convenient oil filling, strong integrity and high stability. Purpose. For this reason, the utility model takes the following technical solutions.

A bearing structure for a vibration motor, comprising an end cover with a bearing chamber and a bearing inside the end cover, characterized in that: a bearing cover is provided on the outer side of the bearing, a circlip groove is provided on the end cover outside the bearing cover, and the circlip groove A circlip that can be offset against the bearing cover is embedded inside, and an annular oil seal that interferes with the rotating shaft is arranged in the inner ring of the bearing cover, and the outer ring of the oil seal is in clearance fit with the inner ring of the bearing cover. The annular oil seal and the bearing cover are in clearance fit, and the sealing performance is good. The circlips are embedded in the holes on the end cover to fix all the parts inside the end cover, improve the overall stability of the motor, and are easy to disassemble and assemble.

As a further improvement and supplement to the above technical solution, the utility model also includes the following additional technical features.

The radial fit clearance between the outer ring of the oil seal and the inner ring of the bearing cover is 0.4-0.6mm. It can prevent the bearing grease from entering the motor iron core, so that the motor bearings can always be kept in the best running state, and the service life of the motor can be improved.

The top of the end cover is provided with an oil injection hole, the wall of the bearing chamber is provided with an oil groove communicating with the oil injection hole, and the end face of the bearing cover matched with the bearing is provided with an annular groove in which the outer ring is opposite to the oil groove and the inner ring is opposite to the bearing rolling element accommodation chamber.

The bearing cover includes a concentric positioning part and a sealing part, the diameter of the outer ring of the sealing part is smaller than the diameter of the outer ring of the positioning part, and a stepped surface is formed at the junction of the positioning part and the sealing part, and the clamp spring and the bearing cover The step faces offset each other.

An axial clearance of 0.8-2 mm is provided between the bearing cover and the bearing and between the oil seal and the bearing. Prevent the motor shaft from being stuck, causing the temperature of the motor bearing to rise, and the motor will burn out if the temperature rises too high.

Beneficial effects: the technical solution is simple to assemble and disassemble, convenient to fill oil, strong in integrity and high in stability.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

Fig. 2 is a schematic view of the blasting structure of the present invention.

In the figure: 1-end cover; 2-bearing; 3-bearing cap; 4-circlip, 5-rotating shaft; 6-oil seal; 7-oil injection hole; 8-oil groove; 9-ring groove; 10-frame.

Detailed ways

The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings of the description.

The utility model comprises an end cover 1 with a bearing chamber, a bearing 2 arranged in the end cover 1, a bearing cover 3 is arranged on the outside of the bearing 2, a snap ring groove is arranged on the end cover 1 outside the bearing cover 3, and a snap ring groove is arranged in the snap ring slot. A snap spring 4 that can be offset against the bearing cover 3 is embedded, and an annular oil seal 6 with an interference fit with the rotating shaft 5 is arranged in the inner ring of the bearing cover 3 , and the outer ring of the oil seal 6 is in clearance fit with the inner ring of the bearing cover 3 . The radial fit gap between the outer ring of the oil seal 6 and the inner ring of the bearing cover 3 is 0.4-0.6 mm. There is an oil injection hole 7 on the top of the end cover 1, and an oil groove 8 communicating with the oil injection hole 7 is opened on the wall of the bearing chamber. The end face of the bearing cover 3 matched with the bearing 2 is provided with an outer ring opposite to the oil groove 8, and an inner ring and a bearing 2 rolling element accommodation chamber. The opposite annular groove 9. The bearing cover 3 includes a concentric positioning part and a sealing part. The diameter of the outer ring of the sealing part is smaller than the diameter of the outer ring of the positioning part.

In order to prevent the motor shaft from being stuck, the temperature of the motor bearing 2 will rise, and the motor will burn out due to excessive temperature rise. Between the bearing cap 3 and the bearing 2 and between the oil seal 6 and the bearing 2, there is an axial gap of 0.8-2mm. The distance H between the bottom of the chamber, the distance X between the 5 rotating shafts, the thickness of the bearing 2 M, the series momentum = (L+2H)-(X+2M), after the whole machine is assembled, there is always a series movement of about 1.5mm on one side.

A kind of vibrating motor bearing structure shown in Fig. 1 and 2 above is a specific embodiment of the utility model, which has already reflected the substantive characteristics and progress of the utility model, and can be used according to actual needs, under the enlightenment of the utility model, Equivalent modification of its shape, structure and other aspects are all within the scope of protection of this scheme.

Claims (5)

1. vibrating motor bearing arrangement; Comprise the end cap (1) of establishing bearing chamber, be located at the bearing (2) in the end cap (1); It is characterized in that: the outside of bearing (2) is provided with bearing cap (3), establishes the jump ring groove on the end cap (1) in bearing cap (3) outside, and the jump ring groove is embedded in the jump ring (4) that can offset with bearing cap (3); Be provided with in bearing cap (3) inner ring one with annular oil seal (6), the outer ring of oil sealing (6) and bearing cap (3) the inner ring matched in clearance of rotating shaft (5) interference fit.

2. a kind of vibrating motor bearing arrangement according to claim 1 is characterized in that: the radial fit gap between the outer ring of oil sealing (6) and bearing cap (3) inner ring is 0.4-0.6mm.

3. a kind of vibrating motor bearing arrangement according to claim 2; It is characterized in that: described end cap (1) top is provided with oil filler point (7); The bearing locular wall is offered the oil groove (8) that communicates with oil filler point (7), and the end face that bearing cap (3) and bearing (2) match is provided with the outer ring and oil groove (8) is relative and the inner ring cannelure (9) relative with bearing (2) rolling element container cavity.

4. a kind of vibrating motor bearing arrangement according to claim 3; It is characterized in that: described bearing cap (3) comprises concentric location division and sealing; The race diameter of described sealing is less than the race diameter of location division; Location division and sealing junction form step surface, and described jump ring (4) offsets with the step surface of bearing cap (3).

5. a kind of vibrating motor bearing arrangement according to claim 4 is characterized in that:

Be equipped with the end play of 0.8-2mm between described bearing cap (3) and the bearing (2) and between oil sealing (6) and the bearing (2).

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