CN202659745U

CN202659745U - Motor worm shaft

Info

Publication number: CN202659745U
Application number: CN 201220222541
Authority: CN
Inventors: 王上胜; 刘代友; 陈善章; 崔金超; 吕燕
Original assignee: Shanghai Shenghuabo Automobile Electric Appliance Co Ltd
Current assignee: Shanghai Shenghuabo Automobile Electric Appliance Co Ltd
Priority date: 2012-05-16
Filing date: 2012-05-16
Publication date: 2013-01-09
Anticipated expiration: 2022-05-16

Abstract

The utility model discloses a motor worm shaft and the motor worm shaft comprises an armature shaft and a worm, wherein the worm is provided with an inner hole and is arranged at one end of the armature shaft in a sleeved mode. One end of the armature shaft penetrates through the inner hole of the worm, a plurality of ribs are fixedly arranged on the surface of the other end of the armature shaft in a circumferential mode, and the armature shaft is interference fit with the inner worm hole through ribs. By the interference fit of the ribs of the armature shaft with the inner worm hole, the curve phenomenon of the armature shaft during the assembling process can be avoided, and therefore the motor performance can be improved and the motor noise can be reduced.

Description

A kind of motor worm axle

Technical field

The utility model relates to motor, more particularly, relates to a kind of motor worm axle.

Background technique

Existing motor worm axle assembling mode as shown in Figure 1, and is first that worm screw 1 is fixing, then armature shaft 2 applied certain power, makes armature shaft 2 be pressed in worm screw 1 hole and reaches the size of regulation.But, in practical operation, because worm screw 1 is fixed, can only apply power to armature shaft 2, but because armature shaft 2 length are longer, larger to its produced simultaneously moment of torsion that applies power, easily cause armature shaft 2 to one side bending deflection, as shown in Figure 2.In case armature shaft 2 distortion easily produce the harmful effects such as stuck, that vibration is large, noise is large.

The model utility content

For the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of motor worm axle, can avoid occuring when it assembles armature shaft bending deflection phenomenon.

For achieving the above object, the utility model adopts following technological scheme:

This motor worm axle comprises armature shaft and has endoporus and be sheathed on the worm screw of armature shaft one end, and described armature shaft one end passes inner bore of worm, and the other end surface circumferentially is installed with many ribs, and by rib and inner bore of worm phase interference fit.

Described armature shaft diameter is less than the inner bore of worm diameter.

In technique scheme, motor worm axle of the present utility model comprises armature shaft and has endoporus and be sheathed on the worm screw of armature shaft one end, described armature shaft one end passes inner bore of worm, and the other end surface circumferentially is installed with many ribs, and by rib and inner bore of worm phase interference fit.By reinforcement position and the inner bore of worm interference fit of armature shaft, can when it assembles, avoid armature shaft to produce buckling phenomenon, thereby can improve motor performance, reduce motor noise.

Description of drawings

Fig. 1 is the assembling schematic diagram of the motor worm axle of prior art;

Fig. 2 is the schematic diagram that deforms in the assembly process of worm shaft of prior art;

Fig. 3 is the structural representation of motor worm axle of the present utility model;

Fig. 4 is the assembling schematic diagram of worm shaft of the present utility model.

Embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

Please in conjunction with Fig. 3～shown in Figure 4, what motor worm axle of the present utility model was same as the prior art is, equally also comprise armature shaft 2 and have endoporus and be sheathed on the worm screw 1 of armature shaft 2 one ends, differently with it be, these armature shaft 2 diameters are less than worm screw 1 diameter of bore, the one end passes worm screw 1 endoporus, and the other end surface circumferentially evenly is installed with many ribs 3, and by rib 3 and worm screw 1 endoporus phase interference fit.

Shown in 4 figure, when assembling, first worm screw 1 endoporus is passed in armature shaft 2 one splayings, then worm screw 1 is fixing, reinforcement position with armature shaft 2 the other ends is pressed into worm screw 1 endoporus by the application of force again, and with worm screw 1 endoporus interference fit, so, can avoid in assembly process armature shaft 2 phenomenon that occurs bending and deformation, thereby in the motor using process, can effectively avoid stuck, the harmful effect such as vibration is large, noise is large that produce because of armature shaft 2 distortion, play and reduce motor noise, cost, raising motor performance and efficient texts.

Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model the above embodiment's variation, modification.

Claims

1. motor worm axle, comprise armature shaft and have endoporus and be sheathed on the worm screw of armature shaft one end, it is characterized in that: described armature shaft one end passes inner bore of worm, and the other end surface circumferentially is installed with many ribs, and by rib and inner bore of worm phase interference fit.

2. motor worm axle as claimed in claim 1, it is characterized in that: described armature shaft diameter is less than the inner bore of worm diameter.