CN203398883U

CN203398883U - Coil framework and stepping motor with application of same

Info

Publication number: CN203398883U
Application number: CN201320478610.3U
Authority: CN
Inventors: 丁维超; 华荣伟
Original assignee: Changzhou Leshi Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2014-01-15
Anticipated expiration: 2023-08-06

Abstract

The utility model relates to a coil framework and a stepping motor with application of the same. The coil framework (20) includes: a framework body (21), a terminal support member (22) which is fixedly connected with the framework body (21), and a plurality of terminals which are fixed (23) by the terminal support member (22). Each terminal (23) comprises a winding part (231), a middle part (232) and an external connection part (233), wherein, the winding part (231) and the external connection part (233) bend towards the middle part (232) along the opposite direction in the same plane. By adopting the coil framework of the utility model, the circuit board structure can be saved, the structure is simplified, and the cost is reduced.

Description

Coil rack and the stepping motor of applying this coil rack

Technical field

The utility model relates to a kind of coil rack and applies the stepping motor of this coil rack.

Background technology

Micro-machine is the important foundation product of the every field extensive uses such as factory automation, family life automation, office automation, common small sized motor according to lead-in wire connected mode difference be divided into leaded motor and without lead-in wire motor.Leaded motor is that index wire is connected directly in respective terminal to provide electric current to motor stator winding, i.e. so-called direct connected mode.Without lead-in wire motor, be on motor, to only have connector port, lead-in wire is connected with motor by matched interfaces as unitary part, i.e. so-called indirect connected mode.

Conventionally, in the scheme of leaded motor, adopt lead-in wire first with circuit board (pcb board) welding, then pcb board is welded to the structure on corresponding terminal, without lead-in wire motor, be that on motor, connector body and pcb board are connected to binding post and to stator winding, provide electric current method of attachment again.

But, be no matter aforesaid leaded motor scheme or without lead-in wire motor scheme, middle transition all adopts pcb board mode to connect.This pcb board connected mode can cause a series of problem: first, what PCB motor internal was electrically connected freely can not draw the problem that generator windings opens circuit; Secondly, pcb board adopts twice welding sequence, thereby may weld rosin joint, Pad off, bead and be splashed to the problems such as gear; Finally, PCB critical process welding human cost is high.

In Chinese invention patent ZL97113111.2, a kind of stepping motor is disclosed, it has a kind of terminal cap structure, for replacing described pcb board connected mode, thereby subdues on the whole number of components and reduces the needed time of processing.Particularly; this terminal cap is the main part by the notch of protection terminal installing component and cylinder; the socket part with the anterior below that is formed at this main part with opening is integrally formed shape, and in the partition part of main part and socket part, is equipped with and makes each external connecting of the terminal that is bent divide a plurality of slit pores that pass through.Wherein, described in the specification of this patent, main part and socket part are separated by dividing plate, and on this dividing plate, the length dimension dividing according to each external connecting of terminal, wears the slit pore of the long long hole shape of the parallel summary of axis with rotor.

Although Chinese invention patent ZL97113111.2 has replaced pcb board by terminal cap, its structure has also been brought other problem.For example, owing to there being the space 40 of passing for terminal between the main part 27 in terminal cap 26 and socket part 28, and on the dividing plate 29 between main part 27 and socket part 28, be provided with a plurality of slit pore 28a～28e, as shown in figure 18, thereby, then dust or metal fragment Hui Conggai space enter into motor internal to slit pore, so may cause motor short circuit.

Utility model content

In order to overcome one of above-mentioned defect, according to one side of the present utility model, a kind of coil rack is provided, has comprised: skeleton main body, the terminal support parts that are fixedly connected with skeleton main body, and by the fixing a plurality of terminals of these terminal support parts, it is characterized in that, terminal comprises winding portion, and mid portion and external connecting are divided, wherein, winding portion and external connecting are divided in same plane and with respect to mid portion, are bent in the opposite direction.

Alternatively, according to the coil rack of the utility model embodiment, winding portion is slightly larger than 90 ° with respect to the angle of mid portion bending, and external connecting divides the angle with respect to mid portion bending to equal 90 °.

Alternatively, according to the coil rack of the utility model embodiment, winding portion is with respect to upwards vertical bending of mid portion, and external connecting is divided with respect to mid portion and bent downward vertically.

Alternatively, according to the coil rack of the utility model embodiment, in winding portion, be wound with the enamelled wire of drawing from skeleton main body.

Alternatively, according to the coil rack of the utility model embodiment, have five butt, corresponding eight enamelled wires, have one for public terminal, to be wound around four enamelled wires in five butt, and all the other four butt are respectively wound around an enamelled wire.

Alternatively, according to the coil rack of the utility model embodiment, the terminal in the middle of being positioned at is public terminal.

Alternatively, according to the coil rack of the utility model embodiment, at terminal support parts, be provided with a plurality of junction poles or minute wire casing, for positioning separated time to being wrapped in the enamelled wire of winding portion.

According on the other hand of the present utility model, a kind of stepping motor is provided, comprise aforementioned coil rack.

According to coil rack of the present utility model and stepping motor, can save board structure of circuit, simplify the structure, reduced cost.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing to embodiment is briefly described, apparently, the accompanying drawing in the following describes only relates to embodiment more of the present utility model, but not to restriction of the present utility model.

Fig. 1 schematically shows according to the terminal-connecting means of the utility model embodiment;

Fig. 2 is according to the schematic cross sectional view of the terminal-connecting means of an embodiment of the utility model;

Fig. 3 is according to the schematic cross sectional view of the terminal-connecting means of another embodiment of the utility model;

Fig. 4 is according to the profile of the coil rack of the utility model embodiment;

Fig. 5 a～Fig. 5 e shows the process that the coil rack shown in Fig. 4 is installed to the terminal-connecting means shown in Fig. 3 stage by stage;

Fig. 6 a～Fig. 6 e shows stage by stage the coil rack shown in Fig. 4 is installed to according to the process of the terminal-connecting means of another embodiment of the utility model;

Fig. 7 is the oblique view from seeing according to the inside of the terminal-connecting means of an embodiment of the utility model;

Fig. 8 is the oblique view from seeing according to the inside of the terminal-connecting means of another embodiment of the utility model;

Fig. 9 is the three-dimensional generalized section that terminal-connecting means and coil rack are assembled mutually;

Figure 10 is the whole structure schematic diagram after terminal-connecting means and coil rack are assembled together;

Figure 11 has schematically shown the cross-section structure of the motor after the assembling of terminal-connecting means and coil rack;

Figure 12 is the schematic diagram in a part of cross section of motor shown in Figure 11;

Figure 13 a～Figure 13 d schematically shows for the bending of terminal and coiling processing procedure;

Figure 14 is the vertical view with the coil rack of junction pole;

Figure 15 schematically shows the state after the coil rack coiling shown in Figure 14;

Figure 16 is the vertical view with the coil rack of minute wire casing;

Figure 17 schematically shows the state after the coil rack coiling shown in Figure 16;

Figure 18 is the oblique view of seeing from front according to the terminal-connecting means of prior art.

Embodiment

For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing of the utility model embodiment, the technical scheme of the utility model embodiment is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present utility model, rather than whole embodiment.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite without creative work, belongs to the scope that the utility model is protected.

Unless otherwise defined, technical term used herein or scientific terminology should be and in field, have the ordinary meaning that the personage of general technical ability understands under the utility model." first " of using in the utility model patent application specification and claims, " second " and similar word do not represent any order, quantity or importance, and are just used for distinguishing different parts.Equally, the similar words such as " " or " " do not represent restricted number yet, and mean and have at least one.

Fig. 1 schematically shows according to the terminal-connecting means of the utility model embodiment.As shown in Figure 1, terminal-connecting means 10 comprises main part 11, socket part 12.Wherein, socket part 12 is formed at the anterior of main part 11 and has downward opening, and the space that this socket part 12 forms together with main part 11, for holding the head of terminal, is electrically connected to it in terminal-connecting means 10 with external plug.

Fig. 2 is according to the schematic cross sectional view of the terminal-connecting means of an embodiment of the utility model.As shown in Figure 2, main part 11 has restriction face G1 and restriction face G2.For example, by the space roughly being limited by restriction face G1 in vertical direction (terminal-connecting means 10 inside are in the space in restriction face G1 left side), be called the upper space S1 of terminal-connecting means 10; By roughly by socket part 12 and restriction face G2, limited for finally holding the space of terminal head, be called lower space S2.Alternatively, according in other embodiment of the present utility model, the upper and lower relation of S1 and S2 also can be exchanged.

Fig. 3 is according to the schematic cross sectional view of the terminal-connecting means of another embodiment of the utility model.Compare with the terminal-connecting means 10 shown in Fig. 2, the terminal-connecting means shown in Fig. 3 further comprises the restriction face G3 that is arranged on socket part (12), by restriction face G2, restriction face G3 and the common participation of socket part 12, limits lower space S2.

Compare with the embodiment shown in Fig. 2, the lower space S2 in the embodiment shown in Fig. 3 is larger, can be so that terminal head portion move a certain distance to the direction of socket part 12 in lower space S2, thus can the larger external plug of size for connection.

Fig. 4 shows according to the profile of the coil rack of the utility model embodiment.As shown in Figure 4, coil rack 20 comprises skeleton main body 21, terminal support parts 22 and terminal 23.Terminal support parts 22 are connected with skeleton main body 21, and are used for realizing fixing terminal 23 by the mid portion 232 of fixed terminal 23.As shown in the figure, terminal 23 also comprises that it is the head of terminal that the winding portion 231 that is bent upwards and reclinate external connecting are divided 233().Terminal 23 can be that policy can be also circular cross section terminal etc.

Fig. 5 a～Fig. 5 e shows the process that the coil rack shown in Fig. 4 is installed to the terminal-connecting means shown in Fig. 3 stage by stage.

As shown in Figure 5 a, first, along the direction of arrow, divide 233 to be advanced in the upper space S1 of terminal-connecting means 10 external connecting of terminal 23.The direction of arrow indication can be parallel with the mid portion 232 of terminal 23.

In the embodiment shown in Fig. 5 a～Fig. 5 e, it is 233 in 90 ° with respect to mid portion 232 bending downwards that external connecting is divided, and restriction face G1 and external connecting are divided 233 parallel.Here, the minimum vertical height of upper space S1 is slightly larger than external connecting and divides 233 length, thereby makes this external connecting to be divided 233 along the direction of arrow, to pack terminal-connecting means 10 into.

In Fig. 5 a, mark has locating surface L1 and locating surface L2, is separately positioned on the main part 11 of terminal-connecting means 10 and the terminal support parts 22 of coil rack 20.Locating surface L1 coordinates with locating surface L2, to limit terminal 23 upstream end sub-connecting device 10 positions, thereby the external connecting that can prevent terminal 23 divide 233 because of collision damaged.

In Fig. 5 a, coil rack 20 is along arrow direction, thereby divides 233 to be advanced in upper space S1 the external connecting of terminal 23.Fig. 5 b shows the state after this motion completes.As shown in Figure 5 b, locating surface L1 and locating surface L2 contact, thereby have realized the restriction for the relative position between coil rack 20 and terminal-connecting means 10.Under the state contacting at locating surface L1 and locating surface L2, external connecting divides 233 approach restriction face G1 or contact with G1, but can be not again to the direction of G1, move, thus can prevent external connecting divide 233 because of collision restriction face G1 damaged.This location safeguard procedures are particularly effective for manual installation.

In other embodiment of the present utility model, also can not there is the location structure of similar locating surface L1 and locating surface L2, but when dividing 233 to touch restriction face G1, external connecting stops the movement of shaped framework coil 20, or by the setting of installing for automaton, prevent that external connecting from dividing 233 to touch restriction face G1.

Alternatively, in upper space S1, be provided with dividing plate 13.In Fig. 5 b, it is 233 parallel that dividing plate 13 and external connecting are divided, and dividing plate 13 has with the external connecting of terminal 23 and divides 233 at quantity and the slit that all mates in shape.That is to say, these slits equate with the number of terminal, width is slightly larger than diameter (circular cross section terminal) or the width (square cross section terminal) of terminal, length is slightly larger than the external connecting of terminal and divides 233, can be so that external connecting divides 233 to pass dividing plate 13 along the direction of arrow in Fig. 5 a.

In other embodiment of the present utility model, dividing plate 13 can be not divide 233 parallel with external connecting yet, but with an angle, but as long as the slit of dividing plate 13 along the opposite direction of Fig. 5 a direction of arrow externally projection and the external connecting in 233 planes of coupling part divide 233 to match, Ji Gai projection width is slightly larger than diameter (circular cross section terminal) or the width (square cross section terminal) of terminal, length is slightly larger than the external connecting of terminal and divides 233, makes external connecting divide 233 along the direction of arrow in Fig. 5 a, to pass dividing plate 13.

Due to the effect of slit, dividing plate 13 can prevent that dust and impurity from entering into the motor internal that coil rack 20 is installed to a certain extent, and in addition, dividing plate 13 also can play certain position-limiting action to terminal.

In Fig. 5 c, coil rack 20 moves along the direction of arrow in the figure, and it is 233 parallel that this direction and the external connecting of terminal 23 are divided.As shown in Figure 5 c, restriction face G1 is all parallel with the direction of motion shown in arrow with restriction face G2, and external connecting divides 233 can in the gallery between restriction face G1 and restriction face G2, move.The width of this movable passageway and external connecting divide 233 head width to mate, and are slightly larger than diameter (circular cross section terminal) or the width (square cross section terminal) of terminal, thereby can prevent well entering of dust etc.

In having the embodiment of locating surface L1 and locating surface L2, locating surface L2 contacts with locating surface L1, and moves down along locating surface L1, also can play the effect that the motion of terminal 23 is limited.

As shown in Figure 5 c, in lower space S2, be provided with alternatively dividing plate 14.External connecting divides 233 along the direction of arrow, to move, through the perforation that is arranged at dividing plate 14.

Alternatively, the size of perforation and the head of terminal match, that is, the minimum widith of perforation is at least slightly larger than the diameter (circular cross section terminal) of terminal or the width (square cross section terminal) of terminal, so that the head of terminal can pass this perforation.That is to say, the size of perforation divides 233 to mate with the external connecting of terminal 23, makes external connecting divide 233 can pass perforation.Because the Breadth Maximum of boring a hole can be slightly larger than or be greater than the diameter (circular cross section terminal) of terminal or the width (square cross section terminal) of terminal, external connecting divides 233 can pass perforation with certain angle.

Preferably, external connecting divides 233 can vertically pass perforation.Now, for circular cross section terminal or square cross section terminal, perforation can be circular perforations or the square perforation matching with it, thereby make external connecting divide 233 just can be vertically through perforation, can play better like this movement of terminal 23 is carried out spacing and prevented the effect that dust etc. enters.

In Fig. 5 d, the external connecting of terminal 23 divides 233 to move to as shown in Figure 5 c in lower space S2.

For the embodiment with dividing plate 14, external connecting Fen233 position can the support for the mid portion 232 of terminal 23 be participated in limiting by dividing plate 14; For the embodiment with dividing plate 13, the one or more lower edge in also can the slit in dividing plate 13 participates in limiting for the support of the mid portion 232 of terminal 23; Also can adopt other to limit mechanism.Limiting mechanism can act on respectively, also can jointly play position-limiting action.

At the state shown in Fig. 5 d, the external connecting of terminal 23 can be divided 233 to be electrically connected to external plug (not shown), and this external plug is fixedly connected on to socket part 12.

Because the difference of the terminal-connecting means shown in the terminal-connecting means shown in Fig. 3 and Fig. 2 can only be to limit the variation of face G3 and corresponding lower space S2, for the foregoing description of Fig. 5 a～Fig. 5 d, be equally applicable to the coil rack shown in Fig. 4 to be installed to the situation of the terminal-connecting means shown in Fig. 2.

According in the embodiment shown in Fig. 3, alternatively, external connecting divides 233 in lower space S2, along direction shown in arrow, to move.

In having the embodiment of dividing plate 14, alternatively, the perforation on dividing plate 14 extends upward in its Breadth Maximum side, to form a perforated slot, thus can be so that external connecting divides 233 can be in this perforated slot to move along direction shown in arrow in Fig. 5 d.

Alternatively, the locating surface L4 that is arranged on the locating surface L3 of main part 11 and is arranged on terminal support parts 22 is in contact with one another and relative sliding, with participate in the perpendicular direction of direction shown in arrow on to terminal 23, carry out spacing.

Fig. 5 e shows the state after the movement of having carried out in Fig. 5 d.Now, because external connecting divides 233 to move a segment distance L, thereby for external plug provides additional space, can be in the larger sized external plug of socket part 12 access.

Fig. 6 a～Fig. 6 e shows stage by stage the coil rack shown in Fig. 4 is installed to according to the process of the terminal-connecting means of another embodiment of the utility model.

As shown in Figure 6 a, be with the structure difference shown in Fig. 3 and Fig. 5 a, restriction face G1 and locating surface L1 divide 233 bearing of trend to tilt with respect to the external connecting of terminal 23.Preferably, restriction face G1 is parallel with locating surface L1.

Be similar to shown in Fig. 5 a, along the direction of arrow, divide 233 to be advanced in the upper space S1 of terminal-connecting means 10 external connecting of terminal 23.The direction of arrow indication can be parallel with the mid portion 232 of terminal 23.Locating surface L1 coordinates with locating surface L2, to limit terminal 23 upstream end sub-connecting device 10 positions, thereby the external connecting that can prevent terminal 23 divide 233 because of collision damaged.

The state that Fig. 6 b shows motion in this Fig. 6 a after completing.As shown in Figure 6 b, locating surface L1 and locating surface L2 contact, thereby have realized the restriction for the relative position between coil rack 20 and terminal-connecting means 10.Under the state contacting at locating surface L1 and locating surface L2, external connecting divides 233 approach restriction face G1 or contact with G1, but can be not again to the direction of G1, move, thus can prevent external connecting divide 233 because of collision restriction face G1 damaged.

Equally, in other embodiment of the present utility model, also can not there is the location structure of similar locating surface L1 and locating surface L2, but when dividing 233 to touch restriction face G1, external connecting stops the movement of shaped framework coil 20, or by the setting of installing for automaton, prevent that external connecting from dividing 233 to touch restriction face G1.

Compare with the scheme of Fig. 5 b, terminal-connecting means 10 divides 233 to tilt with respect to the external connecting of terminal 23, therefore, as long as meet the vertical height H of the upper space S1 of terminal-connecting means 10 be slightly larger than external connecting divide 233 H projected length on a vertical plane, can divide 233 to pack terminal-connecting means 10 into this external connecting.Because being less than external connecting, described projected length divides 233 length, therefore, the vertical height of the upper space of the terminal-connecting means 10 in Fig. 6 b can be less than the vertical height of the upper space of the terminal-connecting means 10 in Fig. 5 b, thereby can reduce the size of terminal-connecting means 10.

Next, make external connecting divide 233 along the direction of arrow in Fig. 6 b, to move, this direction and external connecting divide 233 direction parallel.With similar shown in Fig. 5 c, external connecting divides 233 can in the passage between restriction face G1 and restriction face G2, move.

As shown in Fig. 6 c, external connecting divides 233 along the direction of arrow in Fig. 6 b, to move, through the perforation that is arranged at dividing plate 14.Owing to comparing with Fig. 5 c, external connecting divides 233 to insert obliquely perforation, therefore, perforation divides 233 cross section dividing projection in 233 vertical planes need at least cover external connecting with external connecting, 233 can be with the angle of pre-determined tilt through perforation thereby external connecting is divided.

Alternatively, if the vertical range edge is greater than external connecting and divides 233 length from dividing plate 14 to upper space S1, also can be vertically through perforation.Can play better like this effect that prevents that dust etc. from entering.

In the state shown in Fig. 6 d, external connecting divides 233 to arrive lower space S2, thus the restriction of the restriction face no longer being tilted G1.At this moment, terminal-connecting means 10 can be returned to the angle as shown in Fig. 5 d with respect to the angle of coil rack 20.At this moment, the external connecting of terminal 23 can be divided 233 to be electrically connected to external plug (not shown), and this external plug is fixedly connected on to socket part 12.

In thering is the embodiment of dividing plate 14, as previously mentioned, alternatively, the perforation of dividing plate 14 extends upward in its Breadth Maximum side, to form a perforated slot, thus can be so that external connecting divides 233 can be in this perforated slot to move along direction shown in arrow in Fig. 6 d.

Fig. 6 e has shown the state after the movement in Fig. 6 d.Now, because external connecting divides 233 to move a segment distance L, thereby for external plug provides additional space, can be in the larger sized external plug of socket part 12 access.

Equally, in the embodiment of Fig. 6 a～Fig. 6 e, also can not there is the location structure of similar locating surface L1 and locating surface L2, but when dividing 233 to touch restriction face G1, external connecting stops the movement of shaped framework coil 20, or by the setting of installing for automaton, prevent that external connecting from dividing 233 to touch restriction face G1.

Equally, in the embodiment of Fig. 6 a～Fig. 6 e, alternatively, in the inner space of main part 11, be provided with dividing plate 13.

In the aforementioned embodiment, it is 233 in 90 ° with respect to mid portion 232 bending that the external connecting of terminal 23 is divided, and is convenient to like this mate with external plug, still also can adopt other bending angles.

In the assembling process that Fig. 5 a～Fig. 5 e and Fig. 6 a～Fig. 6 e describe respectively, coil rack 20 is relative with the motion between terminal-connecting means 10, can be both that coil rack 20 is with respect to terminal-connecting means 10 motions; Also can be that terminal-connecting means 10 is with respect to coil rack 20 motions.

Fig. 7 is the oblique view from seeing according to the inside of the terminal-connecting means of an embodiment of the utility model.As shown in Figure 7, restriction face G1 is a smooth flat.In the prior art, in partition part, be provided with a plurality of slit pores, so the support force of this partition part is only from the effect of several muscle in partition part; But shown in Fig. 7 according in embodiment of the present utility model, restriction face G1 is a complete plane, is that face supports, intensity is higher.

Fig. 8 is the oblique view from seeing according to the inside of the terminal-connecting means of another embodiment of the utility model.Compare with the embodiment shown in Fig. 7, be provided with some boss G11, thereby form some inner groovies on the restriction face G1 of the terminal-connecting means 10 in Fig. 8, external connecting divides 233 can in corresponding embedded groove, move.The movement in upper space S1 before this move.

These grooves can play guiding function to the movement of outside coupling part 233, improved facility is installed.On the other hand, the space of the external connecting that this boss structure has been filled up two terminals of adjacent to a great extent between dividing, further reduce outside and inner connected space, thereby improved the difficulty entering of dust or metal garbage, and then improved motor quality and fail safe.

In the terminal-connecting means 10 shown in Fig. 8, on restriction face G3, be also provided with a plurality of boss G31, form some inner groovies, external connecting divides 233 can correspondence enter in groove mobile.This moves is aforesaid movement in lower space S2.Equally, boss G31 also can play guide terminal and moves and reduce outside and inner connected space

Alternatively, on restriction face G2, also there is similar boss structure G21.In addition, restriction face G2 also can be provided with another kind of boss structure---protruding G22, as shown in Figure 5 c.Projection G22 does not play the guiding function to terminal motion, but the end inserting for limiting external plug makes it be not easy, and plays positioning action.

These boss structures G11, G21 and G31 can be independent settings.

The number of the groove conventionally, arranging at restriction face G1, G2 or G3 is more than or equal to the number of terminal.Preferably, the number of groove equals the number of terminal, and for example, when terminal is five, perforation also has five.In addition, alternatively, the size of groove also matches with the head of terminal, that is to say, the minimum widith of groove is at least slightly larger than the diameter (circular cross section terminal) of terminal or the width (square cross section terminal) of terminal, so that external connecting divides 233 can enter in corresponding groove.

Fig. 9 is the three-dimensional generalized section that terminal-connecting means and coil rack are assembled mutually.

Figure 10 is the whole structure schematic diagram after terminal-connecting means and coil rack are assembled together.

Figure 11 has schematically shown the cross-section structure of the motor after the assembling of terminal-connecting means and coil rack.As shown in figure 11, motor 1 at least comprises terminal-connecting means 10, coil rack 20, and be arranged on the terminal 23 on coil rack 20.Motor 1 can also comprise fixed mechanism, and for terminal-connecting means 10 and coil rack 20 are fixed together, for example, cover plate 30 and shell 40, can play the effect of fixed mechanism.

Figure 12 is the schematic diagram in a part of cross section of motor shown in Figure 11.

According to the utility model, before coil rack 20 and terminal-connecting means 10 are assembled together, conventionally, to terminal 23 processing that bends and wind the line.Figure 13 a～Figure 13 d schematically shows for the bending of terminal and coiling processing procedure.

First, by after terminal 23 inserted terminals support components 22, as shown in Figure 13 a, the winding portion of terminal 23 231 is upwards bent with respect to mid portion 232, divide 233 with respect to mid portion 232, to bend downwards external connecting, and winding portion 231, mid portion 232 and external connecting divide 233 in same plane, thereby form coil rack as shown in Figure 4.Preferably, winding portion 231 and external connecting divide 233 on conplane rightabout respectively perpendicular to mid portion 232.

Next, the processing that winds the line, as shown in Figure 13 b.Many enamelled wires are wound into respectively in the winding portion 23 of each self-corresponding terminal 23.Particularly, first from coil rack main body 21, draw the enamelled wire corresponding with terminal 23, then by a plurality of junction poles 221 that are arranged on terminal support parts 22, position separated time respectively, finally each enamelled wire is wound into respectively in the winding portion 231 of each self-corresponding terminal 23.For example, for the situation of 5 butt, conventionally corresponding 8 enamelled wires, in 5 butt, there is 1 for public terminal, be wound around 4 enamelled wires, all the other 4 butt are respectively wound around 1 enamelled wire, thereby make winding mode connect post doubling mode by former 6, become 5 binding post doubling modes.Preferably, using middle terminal as public terminal.

The location separated time effect of junction pole 221 can be so that maintain a certain distance between enamelled wire and terminal, thus make coiling process more accurately, quick.The enlarged drawing of Figure 13 b shows the state after coiling is finished dealing with.

After having carried out coiling processing, conventionally winding portion 231 is warded off to tin and process, to realize the enamelled wire that terminal 23 is corresponding with it, conduct.

Through winding the line and warding off after tin processing, enamelled wire may stretch tight tightlyer, in the installation process below, may break.According to embodiment of the present utility model, can adopt and solve this problem as the processing of Figure 13 c.

In Figure 13 c, winding portion 231 is bent to a less angle [alpha] again to the mid portion 232 of terminal 23, from reducing the level of tightness of enamelled wire.α can be a very little acute angle, can play the effect of loose ends.The state that the enlarged drawing of Figure 13 c shows loose ends after finishing dealing with.

Figure 13 d shows in Figure 13 c the skeleton structure that terminal 23 after bending is processed does not comprise enamelled wire.

In addition, alternatively, after described coiling and warding off tin processing, bending external connecting divides 233.

Figure 14 is the vertical view with the coil rack of junction pole.In Figure 14, external connecting is divided 233 not yet bendings.

Figure 15 schematically shows the state after the coil rack coiling shown in Figure 14.

According in other embodiment of the present utility model, alternatively, with minute wire casing 222, replace junction pole 221, as shown in figure 16.Figure 17 schematically shows the state after the coil rack coiling shown in Figure 16.

According to the motor of the utility model embodiment, preferably, be a kind of stepping motor.

According to terminal-connecting means of the present utility model and motor, by the mechanisms such as narrow movable passageway and dividing plate are set, reduce to a great extent outside and inner interface channel, thereby improved the difficulty entering of dust or metal garbage, and then improved motor quality and fail safe.

The above is only exemplary embodiment of the present utility model, but not for limiting protection range of the present utility model, protection range of the present utility model is determined by appended claim.

Claims

1. a coil rack (20), comprising:

Skeleton main body (21),

The terminal support parts (22) that are fixedly connected with described skeleton main body (21), and

By the fixing a plurality of terminals (23) of these terminal support parts (22),

It is characterized in that, described terminal (23) comprises winding portion (231), mid portion (232) and external connecting are divided (233), wherein, described winding portion (231) and described external connecting divide (233) with respect to described mid portion (232), to bend in the opposite direction in same plane.

2. coil rack according to claim 1 (20), it is characterized in that, described winding portion (231) is slightly larger than 90 ° with respect to the angle of described mid portion (232) bending, and described external connecting divides (233) to equal 90 ° with respect to the angle of described mid portion (232) bending.

3. coil rack according to claim 1 (20), it is characterized in that, described winding portion (231) is with respect to upwards vertical bending of described mid portion (232), and described external connecting divides (233) to bend downward vertically with respect to described mid portion (232).

4. coil rack according to claim 1 (20), is characterized in that, is wound with the enamelled wire of drawing from described skeleton main body (21) in described winding portion (231).

5. coil rack according to claim 4 (20), is characterized in that, described coil rack (20) has five butt, corresponding eight enamelled wires, in five butt, have one for public terminal, to be wound around four enamelled wires, all the other four butt are respectively wound around an enamelled wire.

6. coil rack according to claim 5 (20), is characterized in that, the described terminal in the middle of being positioned at is described public terminal.

7. coil rack according to claim 4 (20), it is characterized in that, at described terminal support parts (22), be provided with a plurality of junction poles (221) or minute wire casing (222), for positioning separated time to being wrapped in the described enamelled wire of described winding portion (231).

8. a stepping motor (1), is characterized in that, comprises according to the coil rack (20) described in any one in claim 1-7.