CN202759364U

CN202759364U - Claw-pole type stepping motor

Info

Publication number: CN202759364U
Application number: CN 201220374847
Authority: CN
Inventors: 吴永奇; 张金榜; 张亮
Original assignee: SHENZHEN SMART MICRO-MOTOR Co Ltd
Current assignee: SHENZHEN SMART MICRO-MOTOR Co Ltd
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2013-02-27
Anticipated expiration: 2022-07-31

Abstract

The utility model discloses a claw-pole type stepping motor, comprising a front end cover, a first outer claw iron core, a first frame coil, a middle claw iron core, a rotor, a second frame coil, a second outer claw iron core and a rear end cover which are successively assembled; the periphery of the first outer claw iron core towards the middle claw iron core is provided with a plurality of first stator outer claws at intervals, the periphery of the second outer claw iron core towards the middle claw iron core is provided with a plurality of second stator outer claws at intervals, and the periphery of the middle claw iron core respectively towards the first claw iron core and the second claw iron core is provided with a plurality of stator middle claws at intervals. The first outer claw iron core and the middle claw iron core are buckled on the first frame coil respectively through the first stator outer claws and the stator middle claws; and the second outer claw iron core and the middle claw iron core are buckled on the second frame coil respectively through the second stator outer claws and the stator middle claws.

Description

Claw polar type step motor

Technical field

The utility model relates to stepping motor, relates in particular to a kind of claw polar type step motor.

Background technology

A kind of claw polar type step motor of the actuator take electroporation as angular displacement, mainly be comprised of claw-pole type stator and rotor, external drive circuit control makes it do expection work, and rotor is the magnet ring with the N.S utmost point, stator is to be made by the soft magnetic material punching press, and stator is installed respectively two winding coils; So that magnetic conductor produces N, S pole field, change the excitation mode of winding after the winding energising, the continuous conversion N of the magnetic pole strength of soft magnetic bodies, S machine repel each other with regular the suction mutually of N, the S utmost point magnet ring of centre, rotatablely move thereby do expection in rotating shaft.The locate mode of stator pawl adopts stator casing to stay a breach, and the protruding slug of stator pawl,

Generally, common claw-pole permanent magnet stepping motor, the connected mode of motor stator is taked welding or viscose glue mode, so just there are failure welding or poor attachment phenomenon, the location is also accurate not between the stator pawl, and rotor operation is steady not, and causes production efficiency low.

The utility model content

The technical problem that the utility model mainly solves provides a kind of claw polar type step motor, comprises front end housing, the first outer pawl iron core, the first skeleton winding, median claw iron core, rotor, the second skeleton winding, second outer pawl iron core and the rear end cap of successively assembling; Be provided with pawl outside a plurality of the first stators towards this median claw iron core compartment of terrain on the periphery of this first outer pawl iron core, be provided with pawl outside a plurality of the second stators towards this median claw iron core compartment of terrain on the periphery of this second outer pawl iron core, be provided with a plurality of stator median claws towards this first outer pawl iron core and the second outer pawl iron core compartment of terrain respectively on the periphery of this median claw iron core; This first outer pawl iron core and median claw iron core are fastened on this first skeleton winding by the outer pawl of the first stator and stator median claw respectively, and this second outer pawl iron core and median claw iron core are fastened on this second skeleton winding by the outer pawl of the second stator and stator median claw respectively.

Wherein, the ora terminalis of the outer pawl of this first stator, the outer pawl of the second stator and stator median claw is provided with projection, be respectively equipped with breach on the periphery of this first outer pawl iron core, the second outer pawl iron core and median claw iron core, thereby breach corresponding to this projection insertion located this first outer pawl iron core, median claw iron core and the second outer pawl iron core.

Wherein, also be provided with bending part on this stator median claw, this bending part and front end housing or rear end cap riveted joint.

The utility model adopts the stator pawl to carry out multipoint positioning, has improved the precision of locating between the stator pawl, has improved the smoothness of rotor operation; In addition, motor of the present utility model adopts and rivets by wrap direction and the end cap of stator pawl, need not welding machine or viscose glue, and improving production efficiency and reliability improve the motor efficiency of assembling; Further, the stator pawl is provided with projection, is respectively equipped with breach on the periphery of this first outer pawl iron core, the second outer pawl iron core and median claw iron core, projection is inserted corresponding breach to be positioned, improved the positioning accuracy of China and foreign countries' pawls, improved the smoothness of motor magnetic circuit, the motor operation is more steady.

Description of drawings

Fig. 1 is the stereogram of claw polar type step motor of the present utility model.

Fig. 2 is the exploded view of claw polar type step motor of the present utility model.

Fig. 3 is the partial enlarged drawing of claw polar type step motor of the present utility model.

The main element symbol description

10, front end housing; 20, the first outer pawl iron core; 21, the outer pawl of the first stator; 30, the first skeleton winding;

40, median claw iron core; 411, bending part; 50, rotor; 60, the second skeleton winding;

70, the second outer pawl iron core; 71, the outer pawl of the second stator; 80, rear end cap; 11, projection;

12, breach.

Embodiment

By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, below in conjunction with execution mode and cooperate that accompanying drawing is detailed to give explanation.

See also Fig. 1 to Fig. 3, claw polar type step motor 100 comprises front end housing 10, the first outer pawl iron core 20, the first skeleton winding 30, median claw iron core 40, rotor 50, the second skeleton winding 60, second outer pawl iron core 70 and the rear end cap 80 of successively assembling.This first outer pawl iron core 20, the first skeleton winding 30, median claw iron core 40, the second skeleton winding 60, and the second outer pawl iron core 70 consist of stators.

Be provided with pawl 21 outside a plurality of the first stators towards these median claw iron core 40 compartment of terrains on the periphery of this first outer pawl iron core 20, be provided with pawl 71 outside a plurality of the second stators towards these median claw iron core 40 compartment of terrains on the periphery of this second outer pawl iron core 70, be provided with a plurality of stator median claws 41 towards this first outer pawl iron core 20 and the second outer pawl iron core 70 compartment of terrains respectively on the periphery of this median claw iron core 40.This first outer pawl iron core 20 and median claw iron core 40 are fastened on this first skeleton winding 30 by the outer pawl 21 of the first stator and stator median claw 41 respectively, and the outer pawl 21 of this first stator and stator median claw 41 are interlaced with each other.This second outer pawl iron core 70 and median claw iron core 40 are fastened on this second skeleton winding 60 by the outer pawl 71 of the second stator and stator median claw 41 respectively, and the outer pawl 71 of this second stator and stator median claw 41 are interlaced with each other.

The ora terminalis of the outer pawl 21 of this first stator, the outer pawl 71 of the second stator and stator median claw 41 is provided with projection 11, be respectively equipped with breach 12 on the periphery of this first outer pawl iron core 20, the second outer pawl iron core 70 and median claw iron core 40, thereby the breach 12 that this projection 11 is inserted correspondence is located this first outer pawl iron core 20, median claw iron core 40 and the second outer pawl iron core 70.Also be provided with bending part 411 on this stator median claw 41, this bending part 411 and front end housing 10 or rear end cap 80 riveted joints.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. a claw polar type step motor is characterized in that, comprises front end housing, the first outer pawl iron core, the first skeleton winding, median claw iron core, rotor, the second skeleton winding, second outer pawl iron core and the rear end cap of successively assembling; Be provided with pawl outside a plurality of the first stators towards this median claw iron core compartment of terrain on the periphery of this first outer pawl iron core, be provided with pawl outside a plurality of the second stators towards this median claw iron core compartment of terrain on the periphery of this second outer pawl iron core, be provided with a plurality of stator median claws towards this first outer pawl iron core and the second outer pawl iron core compartment of terrain respectively on the periphery of this median claw iron core; This first outer pawl iron core and median claw iron core are fastened on this first skeleton winding by the outer pawl of the first stator and stator median claw respectively, and this second outer pawl iron core and median claw iron core are fastened on this second skeleton winding by the outer pawl of the second stator and stator median claw respectively.

2. a kind of claw polar type step motor according to claim 1 is characterized in that,

The ora terminalis of the outer pawl of this first stator, the outer pawl of the second stator and stator median claw is provided with projection, be respectively equipped with breach on the periphery of this first outer pawl iron core, the second outer pawl iron core and median claw iron core, thereby breach corresponding to this projection insertion located this first outer pawl iron core, median claw iron core and the second outer pawl iron core.

3. a kind of claw polar type step motor according to claim 1 is characterized in that,

Also be provided with bending part on this stator median claw, this bending part and front end housing or rear end cap riveted joint.