CN2095503U

CN2095503U - Linear motor

Info

Publication number: CN2095503U
Application number: CN 91219466
Authority: CN
Inventors: 张敢明; 杨凌
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-08-07
Filing date: 1991-08-07
Publication date: 1992-02-05

Abstract

The utility model discloses a straight line motor which can directly give straight line motion. A long screw hole is penetrated along a shaft line direction of the motor shaft of the existing common motor, and a screw is screwed in the long screw hole. When a rotor rotates, the existing common motor and the screw can do opposite straight line motion. A travel switch is additionally arranged, and the existing common motor can give continuous straight line reciprocating motion. The utility model has wide purposes in electromechanical equipment of an electronic typewriter, etc.

Description

Linear motor

The utility model relates to a kind of motor, particularly will rotatablely move to change straight-line linear motor into.

At present, common motor is all directly awarded extraneously textural by (group) stator and motor that rotor is formed, be rotatablely moving of rotor.But usually need the parts of moving linearly in the dynamo-electric design, the common practice is to use cover turbine, gear or devices such as pulley and chain, and rotatablely moving of motor changed into rectilinear motion, the whole device complex structure that seems.

The purpose of this utility model is to provide a kind of structure, can change rotatablely moving of motor rotor into rectilinear motion more easily.

The purpose of this utility model is achieved in that in a motor with ordinary constitution, the rotating shaft diameter of rotor is suitably strengthened, wear an elongated screw along axis direction in rotating shaft, the screw rod with a random length and equivalent diameter screws in the screw again.When stator rotates, whole motor will be made linear relative movement with screw rod.Straight-line speed will be determined jointly by the rotating speed of rotor and the pitch of screw rod.If one (group) " walking switch " is connected with electric electromechanics, its mechanical location is selected suitably again, makes the relative position of motor and screw rod to a certain degree the time, and rotor reverses, and then said rectilinear motion can become straight reciprocating motion again.

Owing to adopt such scheme, not only can make given the rotatablely moving more directly and change rectilinear motion easily into of motor, consumed power still less and plays simultaneously and slows down and the effect of reinforcement.Because parts are few, its running is also more reliable.This is useful in some electromechanical equipments.A common illustration is: in the electronic typewriter, the straight reciprocating motion of printhead just can adopt the said linear motor of the utility model more effectively to realize.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the generalized section of existing common motor.

Fig. 2 is the generalized section of linear motor.

Fig. 3 is the generalized section of existing ordinary electronic typewriter.

Fig. 4 is the generalized section of the electronic typewriter behind the employing linear motor.

Fig. 5 is the other illustration of hollow arbor.

Fig. 6 is the line map of " walking switch ".

In Fig. 1 and Fig. 2: 1 ┈ casing; 2 ┈ stators; 3 ┈ rotors; 4 ┈ bearings; 5 ┈ arbors, but arbor shown in Figure 1 is a solid shafting, and arbor shown in Figure 2 then is a female hollow shaft.In Fig. 2: 6 ┈ screw rods, length can be greater than or less than arbor length, and diameter and pitch are suitable with hollow shaft 5, can screw in the hollow bearing 5; 7 ┈ connecting rods are fixedlyed connected with screw rod 6, and are changeable, also can penetrate in the hollow shaft 5 with screw rod 6.

In Fig. 3: 1 ┈ electronic typewriter shell; 2 ┈ printheads; 3 ┈ guide rails;

4 ┈ driving wheels; 5 ┈ travelling gears; 6 ┈ support wheels; 7 ┈ driving chains; 8 ┈ motor.

In Fig. 4: 1 ┈ electronic typewriter shell; 2 ┈ printheads; 9 ┈ screw rods, the double as guide rail; 10 ┈ motor.

As can be seen, the electronic typewriter of said function, Fig. 4 is structurally more simpler than Fig. 3, and running will be more reliable.

In Fig. 5: 1 ┈ hollow shaft, inwall does not have screw thread; 2 ┈ have the parts of internal thread, can be fastened on the hollow shaft edge, are embedded in formula among the figure; 3 ┈ have the parts of internal thread, can be fastened on the hollow shaft edge, are outer interconnection system among the figure; 4 ┈ holding screws; 5 ┈ holding screws.

Adopt the link that has internal thread shown in Figure 5, be convenient to change, thereby save arbor itself from damage in its wearing and tearing back.

Claims

1, a kind of linear motor has (group) stator, rotor and an arbor in shell, its mutual alignment is similar to common motor with relation, it is characterized in that: arbor has an elongated hole along axis direction.

2, by the described linear motor of claim 1, it is characterized in that: in the hole of arbor, screw thread is arranged;

3, by the described linear motor of claim 1, it is characterized in that: female parts of connecting band with one heart at two of arbor;

4, by claim 1,2 and 3 described linear motors, it is characterized in that: the screw rod that in arbor, can screw in any length;

5, by claim 1,2,3 and 4 described linear motors, it is characterized in that: have one (group) " walking switch " to be electrically connected with it.