CN101378221A - Stepping motor - Google Patents

Stepping motor Download PDF

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Publication number
CN101378221A
CN101378221A CNA2008102146731A CN200810214673A CN101378221A CN 101378221 A CN101378221 A CN 101378221A CN A2008102146731 A CNA2008102146731 A CN A2008102146731A CN 200810214673 A CN200810214673 A CN 200810214673A CN 101378221 A CN101378221 A CN 101378221A
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CN
China
Prior art keywords
terminal
maintaining part
terminal board
stator
stepping motor
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Pending
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CNA2008102146731A
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Chinese (zh)
Inventor
矢岛克英
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Nidec Sankyo Corp
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Nidec Sankyo Corp
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Publication of CN101378221A publication Critical patent/CN101378221A/en
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Abstract

A stepping motor can prevent the careless inclining of terminal stand arranged at the periphery side of stepping motor. The stepping motor comprises the following components: a rotor which comprises a rotation shaft and a permanent magnet provided surrounding the periphery of rotation shaft; a stator which comprises a stator core that is vertical and formed with pole teeth; a driving coil which is arranged at the periphery side of the pole teeth; and the terminal stand which is arranged at the periphery side of stator. The brim part of stator core is arranged with a terminal stand holding part holding the terminal stand. The terminal stand holding part is formed with a first holding part supporting the bottom surface of terminal stand. The first holding part bends and extends in the direction from the brim part to the axial cord.

Description

Stepping motor
Technical field
The present invention relates to a kind of stepping motor with terminal board.
Background technology
In the past, in the small type stepping motor 60 shown in Figure 16 (a), the terminal board 62 that is formed by resin material that a plurality of terminal pins 61 are installed was arranged on the outer circumferential side of stepping motor 60.The winding end of coil 63,64 is intertwined and connected on terminal pins 61.
Central authorities at terminal board 62 are formed with embedded hole 62a, and are chimeric to maintaining part 65b, 66b and this embedded hole 62a that outer circumferential side extends by making from the 65a of eaves portion, the 66a of the stator core 65,66 of configuration back-to-back, and terminal board 62 is fixing.The front view of the vertical view of Figure 16 (b) and Figure 16 (c) is represented respectively is stator core 65,66 (with reference to patent documentation 1) under the state that terminal board 62 is fixed.
In addition, in other stepping motor in the past, have a kind of stepping motor to be provided with terminal board at its outer circumferential side, this terminal board is provided with for the terminal a plurality of terminal pins of twining of the winding of coil.These terminal pins alignment arrangements with the direction of the output shaft quadrature of stepping motor on (with reference to patent documentation 2).
Patent documentation 1: the Japan Patent spy opens communique 2006-No. 280035
Patent documentation 2: the Japan Patent spy opens communique 2000-No. 102204
Yet, shown in Figure 16 (a)～Figure 16 (c), because the stepping motor shown in the patent documentation 1 is just to be embedded into the maintaining part 65b that forms, the structure that 66b fixes by terminal board 62 is overlapped on the 65a of eaves portion, the 66a of stator core 65,66, so terminal board 62 tilts sometimes because of carelessness.In this case, for example there is the problem be difficult to carry out the processing that after putting flexible wiring substrate on the terminal board 62, terminal pins 61 is connected with the circuit pattern of flexible wiring substrate.
In addition, in the stepping motor shown in the patent documentation 2, along with reducing of motor diameter, each terminal pins interval each other must narrow down.Yet when making the terminal board miniaturization along with the miniaturization of stepping motor, the mouth of the automatic winder that the coiling winding is used can't be by between the terminal pins, existence can't be on terminal pins the problem of the winding end of winding around automatically.Therefore, the miniaturization of terminal board can't be carried out, the obstacle of stepping motor miniaturization may be become.
In addition, when narrowing down, also can there be the problem that can't go up the pad that forms the required size of scolder coating at the power supply substrate that is connected with these terminal pins (flexible wiring substrate) at terminal pins interval each other.
For this problem, shown in Figure 17 (a), can by and the output shaft X of stepping motor 500 dispose two row terminal pins 501a～501d orthogonally and the interval between terminal pins 501a～501d, guaranteeing to expect.But, when this configuration, shown in Figure 17 (b), can there be the problem that stepping motor 500 required spaces increase of installing in the power supply substrate 510 that is connected with terminal pins 501a～501d from the length direction outstanding (the oblique line part of Figure 17 (b)) of motor body portion (stator) 502.
Summary of the invention
In view of the above problems, the 1st problem of the present invention is to provide a kind of terminal board that prevents to be configured in the stepping motor outer circumferential side the careless stepping motor that tilts.
The 2nd problem of the present invention is to provide a kind of can guarantee the stepping motor at enough big interval between a plurality of terminal pins that are arranged on the terminal board.In addition, also be the stepping motor that provides a kind of installing space can not narrow down because of the power supply substrate that is connected with terminal pins.
In order to solve above-mentioned the 1st problem, stepping motor of the present invention comprises: rotor, this rotor comprise rotating shaft and the permanent magnet that has in the periphery of this rotating shaft; Stator, this stator have erects the stator core that is formed with utmost point tooth; Drive coil, this drive coil is configured in the outer circumferential side of described utmost point tooth; And terminal board, this terminal board is configured in the outer circumferential side of described stator, its purport is, eaves portion in described stator core is provided with the terminal board maintaining part that keeps described terminal board, on described terminal board maintaining part, be formed with first maintaining part that the bottom surface of described terminal board is supported, the axis direction bending extension of this first maintaining part from described eaves portion towards motor.
Adopt the present invention, owing on the terminal board maintaining part of the eaves portion that is arranged on stator core, be formed with first maintaining part that the bottom surface of terminal board is supported, the axis direction bending extension of this first maintaining part from eaves portion towards motor, therefore can utilize first maintaining part to prevent that terminal board from tilting because of carelessness, prevent that especially terminal board from tilting to described axis direction.For example, even when the processing that puts flexible wiring substrate etc. and connect etc., owing to can utilize first maintaining part to bear to be applied to power on the terminal board, therefore, on terminal board, put processing that flexible wiring substrate connects etc. and become easy.
In this case, be preferably in and be formed with second maintaining part that described terminal board is supported on the described terminal board maintaining part, this second maintaining part is extended towards the direction of intersecting with axis direction from described eaves portion.If constitute like this, then terminal board is firm to fixedly becoming of terminal board maintaining part, and then can prevent that terminal board from tilting because of carelessness.In addition, preferably described first maintaining part and/or second maintaining part form tabular.If constitute like this, then easy eaves portion in stator core forms first maintaining part, second maintaining part, and can come the support terminals platform with face.
In addition, best described terminal board maintaining part is formed on eaves portion same distolateral of described stator core, described second maintaining part is formed on the substantial middle position of described terminal board maintaining part, and described first maintaining part upwards is being formed on the position different with described second maintaining part in week.If constitute like this, then terminal board stably can be fixed on first maintaining part and second maintaining part, and can strengthen distance between first maintaining part and second maintaining part, therefore, when the winding end that will draw from coil is wound on the terminal pins of being located at terminal board, first maintaining part does not produce interference, the winding end is wound into processing on the terminal pins becomes and carry out easily.
In addition, be preferably in and be formed with on the described terminal board and the chimeric embedded hole of described second maintaining part, described terminal board with make described second maintaining part and described embedded hole chimeric the time described first maintaining part and the bottom surface butt of described terminal board, described terminal board the bottom surface installed by the state that described first maintaining part supports.If constitute like this, then terminal board is fixed to operation on the terminal board maintaining part and becomes and carry out easily.And when only supporting with first maintaining part, the fixing of terminal board also stablized.
In addition, the cardinal extremity that is preferably in described second maintaining part is formed with stage portion, and the position of the seating surface that is bent to form of the front position of described stage portion and described first maintaining part is roughly the same.If constitute like this, then the bottom surface of terminal board can be kept by described first maintaining part and described stage portion both sides, thereby can prevent that terminal board from tilting because of carelessness, especially can prevent to tilt to axis direction and stator radial direction.
In addition, first maintaining part of best described terminal board maintaining part from described eaves portion towards extending to identical direction with the vertical cube of described utmost point tooth.If constitute like this, then in the utmost point tooth in the bending machining stator core, can be bent to form the processing of first maintaining part from eaves portion, thereby can improve the working (machining) efficiency of stator core with first maintaining part.
In addition, best described stator is made of two groups of stator pack, is formed with the described terminal board maintaining part with described first maintaining part in the eaves portion of described two groups stator pack stator core separately.If constitute like this, then can utilize first maintaining part of the terminal board maintaining part that forms in two stator cores eaves portion separately to prevent that terminal board from tilting to either direction.In this case, preferably described two groups of stator pack comprise respectively: internal stator iron core and external stator iron core, it is clamped in described drive coil between itself and the internal stator iron core, two described internal stator iron cores dispose back-to-back, and are formed with respectively on described two internal stator iron cores: described first maintaining part; And second maintaining part of extending from described eaves portion towards the direction of intersecting with described axis direction, described terminal board being supported.
In addition, the central authorities that are preferably in described terminal board are formed with and the chimeric embedded hole of described second maintaining part that is separately positioned on described two internal stator iron cores, on described axis direction two side positions of described embedded hole, be respectively arranged with the winding wound portion of a plurality of terminal pins that are connected with the described drive coil of described two groups of stator pack, when described two internal stator iron cores dispose back-to-back, described second maintaining part that is separately positioned on described two internal stator iron cores constitutes described second maintaining part, chimeric with the described embedded hole of described terminal board, and, be separately positioned in the middle of described first maintaining part on described two internal stator iron cores is clipped in described second maintaining part, be respectively formed on the rightabout on the described axis direction, on described axis direction two side positions of the described embedded hole of described terminal board, utilize described two first maintaining parts to support the bottom surface of described terminal board.If constitute like this, then can a terminal board be set with respect to two stator pack, and this terminal board constituted utilize first maintaining part be separately positioned on two internal stator iron cores, thereby can prevent that terminal board from tilting to axis direction with simple structure in the bottom surface of the described terminal board of axis direction two side position upper supports.
In this case, described first maintaining part that preferably is separately positioned on two internal stator iron cores extends to form to the position of the described winding wound portion of the locational described terminal pins in described axis direction both sides that is arranged on described embedded hole, and, the axial forward end of best described first maintaining part extends to the position than the more close described axial outside, position of the described winding wound portion of described terminal pins, upwards also forms the position of support than the more close outside, position of described winding wound portion in week.If constitute like this, then equal to utilize first maintaining part that is separately positioned on two internal stator iron cores on a large scale, to support the bottom surface of described terminal board, thereby can stably support the bottom surface of described terminal board, prevent from.
In addition, in order to solve above-mentioned the 2nd problem, stepping motor of the present invention comprises: rotor, this rotor comprise rotating shaft and the permanent magnet that has in the periphery of this rotating shaft; Stator, this stator have erects the stator core that is formed with utmost point tooth; Drive coil, this drive coil is configured in the outer circumferential side of described utmost point tooth; Terminal board, this terminal board is configured in the outer circumferential side of described stator; And a plurality of terminal pins, these a plurality of terminal pins are configured on the described terminal board, its purport is, described a plurality of terminal pins comprises: for the terminal the first terminal pin that twines of a winding of described coil and for terminal second terminal pins of twining of another winding of described coil, described the first terminal pin and described second terminal pins are configured on the described terminal board along the axis direction of described rotating shaft.
Adopt the present invention, because therefore terminal pins can guarantee enough big interval along the axis direction configuration of the rotating shaft of stepping motor between the first terminal pin and second terminal pins.Thus, can prevent to guarantee to be used to form the problem in space that scolder is coated with the pad of required size by the problem between the terminal pins, on the power supply substrate that is connected with terminal pins at the mouth of the automatic winder of the terminal usefulness of the winding of coiling coil on the terminal pins.
In this case, best described the first terminal pin and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on all be configured on the different positions.If constitute like this, can further strengthen the interval between the first terminal pin and second terminal pins.In addition, described the first terminal pin and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on form in the middle of being clipped in axis with described rotating shaft be configured on the different positions, this helps strengthening the interval between the first terminal pin and second terminal pins.
In addition, more preferably be formed with first notch part corresponding and second notch part corresponding with described second terminal pins with described the first terminal pin in the peripheral part of described terminal board, described first notch part and described second notch part all are formed on the adjacent position of corresponding described terminal pins on the direction of described terminal board and axis direction quadrature described rotating shaft, a winding end of described coil is drawn and is wrapped on the described the first terminal pin from described first notch part, and another winding end of described coil is drawn and is wrapped on described second terminal pins from described second notch part.That is, be wound up on the terminal pins after the electric wire that will form coil is earlier opened the notch part that is set to terminal board, therefore, the winding end becomes easily to the winding processing of terminal pins, and can more firmly the winding end be wrapped on the terminal pins again.In addition, because one and another winding end are no longer intersected with each other, therefore can prevent terminal broken string of winding or short circuit.
In this case, preferably described first notch part and second notch part are the shapes that the peripheral part from described terminal board narrows down towards described terminal pins side front end.Thus, will form the electrical wire fastener of coil easily in notch part.In addition, because notch part forms the shape that front end narrows down towards the terminal pins side, therefore help to improve the winding end to the operating efficiency of the winding processing of terminal pins and prevent the broken string of winding end.
In addition, best described the first terminal pin and described second terminal pins with the direction of the orthogonal axe of described rotating shaft on form in the middle of being clipped in axis with described rotating shaft be configured on the different positions, described first notch part and described second notch part that are arranged on the described terminal board cut out on week makes progress opposite directions on the position corresponding with described the first terminal pin and described second terminal pins, and a winding of described coil another winding end terminal and described coil is upwards being drawn and is being wrapped on described the first terminal pin and described second terminal pins in week the other way around.Thus, when being wound into each winding end on the terminal pins, each winding end no longer contacts each other, intersects, and can prevent the terminal broken string of winding or because of the contact short circuit.
In addition, best described the first terminal pin is than the more close outlet side of described second terminal pins, the power supply substrate that is formed with the first pin connecting hole and the second pin connecting hole on correspondence position respectively is installed on described the first terminal pin and described second terminal pins, on the axis direction of described rotating shaft, distance between the outlet side end face of described power supply substrate and the described first pin connecting hole is less than the outlet side end face of described stator and the distance between the described the first terminal pin, and the distance between the end face of a side opposite with outlet side of described power supply substrate and the described second pin connecting hole is less than the end face of a side described stator and that outlet side is opposite and the distance between described second terminal pins.Adopt this structure, the power supply substrate that is installed on the stepping motor can be outstanding from stator (motor body portion), can prevent to install the required space of stepping motor and become big, helps to install the miniaturization of the equipment of stepping motor.
In addition, be preferably in and be formed with the terminal board maintaining part that keeps described terminal board in the described stator core, the axis direction of this terminal board maintaining part from the peripheral end of described stator towards described rotating shaft extends, with the end face butt of described terminal board.Thus, can prevent that terminal board from tilting because of carelessness, can prevent that especially terminal board from tilting and tilting to the stator radial direction to the shaft axis direction, on terminal board, put processing that the power supply substrate connects etc. and become easy.
In addition, best described stator is made of two groups of stator pack, is configured in described the first terminal pin and described second terminal pins on the stator pack and the described the first terminal pin and described second terminal pins that are configured on another stator pack are configured on the described terminal board along the axis direction of described rotating shaft respectively.Thus, even have the stepping motor of two-phase stator, also can between each terminal pins, guarantee enough intervals.
In this case, preferably be configured in described the first terminal pin and described second terminal pins on the described stator pack and be configured on described another stator pack described the first terminal pin and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on all be configured on the different positions.Particularly, preferably described two groups of stator pack described the first terminal pin separately and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on form in the middle of being clipped in axis with described rotating shaft be configured on the different positions.Adopt this structure, in stepping motor, can further strengthen the interval between the first terminal pin and second terminal pins with two-phase stator.
In addition, best described terminal board is formed by second terminal board that is configured in the first terminal platform on the described stator pack and be configured on described another stator pack, and described the first terminal platform and the described second terminal board split form.Adopt this structure, even in the periphery of utmost point tooth with other component configuration of bobbin and so in coil during week, also can be along the axis direction configuration terminal pins of the rotating shaft of stepping motor.And the assembling of stepping motor becomes easily, helps to reduce manufacturing cost.
Adopt the stepping motor of the 1st invention, owing on the terminal board maintaining part that is arranged in the eaves portion of stator core, be formed with first maintaining part that the bottom surface of terminal board is supported, this first maintaining part from eaves portion towards the axis direction bending extension, therefore can utilize first maintaining part and second maintaining part to prevent that terminal board from tilting because of carelessness, especially prevent that terminal board from tilting because of carelessness to axis direction and stator radial direction, on terminal board, put processing that flexible wiring substrate connects etc. and become easy.
In addition, adopt the stepping motor of the 2nd invention, because therefore a plurality of terminal pins can fully guarantee terminal pins interval each other along the axis direction configuration of the rotating shaft of stepping motor.And, can therefore can not prevent to dispose the required space of motor and increase from the outstanding size of motor housing owing to the power supply substrate can be formed because of the power supply substrate.
Description of drawings
Fig. 1 is the sectional side view of schematic configuration of the stepping motor of expression the present invention first example.
Fig. 2 is the figure of expression terminal board, and Fig. 2 (a) is a vertical view, and Fig. 2 (b) is an end view, and Fig. 2 (c) is a front view.
Fig. 3 is the figure of expression internal stator iron core, and Fig. 3 (a) is a vertical view, and Fig. 3 (b) is an end view, and Fig. 3 (c) is the front view that a part is dissectd expression.
Fig. 4 is the figure that the expression terminal board is fixed on the state in the eaves portion of internal stator iron core, and Fig. 4 (a) is a vertical view, and Fig. 4 (b) is an end view, and Fig. 4 (c) is the front view that a part is dissectd expression.
Fig. 5 is the figure of the 1st variation of expression internal stator iron core shown in Figure 3, and Fig. 5 (a) is a vertical view, and Fig. 5 (b) is an end view, and Fig. 5 (c) is the front view that a part is dissectd expression.
Fig. 6 is the figure that the expression terminal board is fixed on the state in the eaves portion of internal stator iron core of the 1st variation, and Fig. 6 (a) is a vertical view, and Fig. 6 (b) is an end view, and Fig. 6 (c) is the front view that a part is dissectd expression.
Fig. 7 is the figure of the 2nd variation of expression internal stator iron core shown in Figure 3, and Fig. 7 (a) is a vertical view, and Fig. 7 (b) is an end view, and Fig. 7 (c) is the front view that a part is dissectd expression.
Fig. 8 is the figure that the expression terminal board is fixed on the state in the eaves portion of internal stator iron core of the 2nd variation, and Fig. 8 (a) is a vertical view, and Fig. 8 (b) is an end view, and Fig. 8 (c) is the front view that a part is dissectd expression.
Fig. 9 is the sectional side view of the stepping motor of the present invention's second example.
Figure 10 is the vertical view (state that does not connect flexible wiring substrate) of stepping motor shown in Figure 9.
Figure 11 is the vertical view (state that has connected flexible wiring substrate) of stepping motor shown in Figure 9.
Figure 12 is the sectional side view of stepping motor of the variation of expression the present invention second example.
Figure 13 is the vertical view (state that does not connect flexible wiring substrate) of stepping motor shown in Figure 12.
Figure 14 is the sectional side view of stepping motor of another variation of expression the present invention second example.
Figure 15 is the vertical view (state that does not connect flexible wiring substrate) of stepping motor shown in Figure 14.
Figure 16 (a) is a sectional side view of representing the schematic configuration of stepping motor in the past, Figure 16 (b) is the vertical view of the state after the eaves portion of expression terminal board and internal stator iron core is fixed, and Figure 16 (c) is the front view of the state after the eaves portion of expression terminal board and internal stator iron core is fixed.
Figure 17 (a) is used for the vertical view that the configuration structure to the terminal pins of in the past stepping motor describes, and Figure 17 (b) is illustrated in the vertical view that has connected the state of flexible wiring substrate on this stepping motor.
(symbol description)
1 motor
2 rotating shafts
3 rotor magnets
4 rotors
5 stators
8 first stator pack
9 second stator pack
10,11 air core coils (drive coil)
10a, 10b, 11a, 11b winding end
12,14 internal stator iron cores
12a, 14a utmost point tooth
12b, 14b eaves portion
12c, 14c first maintaining part
12d, 14d second maintaining part
12f, 14f stage portion
20 terminal boards
21～24 terminal pins
The 21f embedded hole
30,31 terminal board maintaining parts
120,320 terminal boards
120a～120d notch part
121a～121d terminal pins
150 flexible wiring substrates
151a～151d sells connecting hole
200,300,400 stepping motors
301 the first terminal platforms
302 second terminal boards
Embodiment
(first example)
Example to stepping motor of the present invention is elaborated with reference to the accompanying drawings.First example describes the 1st invention.Fig. 1 is the sectional side view of schematic configuration of the stepping motor of expression the present invention first example, and Fig. 2 is the figure of expression terminal board.Fig. 2 (a) is a vertical view, and Fig. 2 (b) is an end view, and Fig. 2 (c) is a front view.Fig. 3 is the figure of expression internal stator iron core, and Fig. 3 (a) is a vertical view, and Fig. 3 (b) is an end view, and Fig. 3 (c) is the front view that a part is dissectd expression.Fig. 4 is the figure that is illustrated in the state of having fixed terminal board on the internal stator iron core, and Fig. 4 (a) is a vertical view, and Fig. 4 (b) is an end view, and Fig. 4 (c) is the front view that a part is dissectd expression.
Stepping motor 1 shown in Figure 1 comprises: have rotating shaft 2 and separate the stator 5 of relative with gap configuration with the rotor 4 of the affixed rotor magnet (permanent magnet) 3 of rotating shaft 2 and with rotor magnet 3.
Rotating shaft 2 can be supported by the clutch shaft bearing 6 and second bearing 7 with rotating freely.Rotor magnet 3 is made of permanent magnet cylindraceous roughly.
Stator 5 have by first stator pack 8 and with this first stator pack 8 two phase structures that stacked second stator pack 9 forms on axis direction.
First stator pack 8 and second stator pack 9 comprise respectively: internal stator iron core 12,14; And external stator iron core 13,15, it is clamped in drive coil 10,11 between itself and the internal stator iron core 12,14.In addition, the stepping motor of this example is the nothing coiling tubular type stepping motor that does not use bobbin, and what drive coil 10,11 used is air core coil.In the following description, the drive coil note is made air core coil.
In interior all sides of air core coil 10,11, be respectively formed at a plurality of utmost point tooth 12a, the 14a on the internal stator iron core 12,14 and a plurality of utmost point tooth 13a, the 15a that are respectively formed on the external stator iron core 13,15 alternately pack into respectively.Therefore, in this example, periphery at each utmost point tooth 12a, 13a of the internal stator iron core 12 of first stator pack 8 and external stator iron core 13 disposes circular air core coil 10, equally, the periphery at each utmost point tooth 14a, 15a of the internal stator iron core 14 of second stator pack 9 and external stator iron core 15 disposes circular air core coil 11.
As shown in Figure 1, on the internal stator iron core 12,14 of the first above-mentioned stator pack 8 and second stator pack 9, from inner peripheral respectively roughly equally spaced ring-type erect and to be formed with a plurality of utmost point tooth 12a, 14a.Equally, in the stator core outside 13,15, from inner peripheral respectively roughly equally spaced ring-type erect and to be formed with a plurality of utmost point tooth 13a, 15a.In addition, in this example, external stator iron core 13,15 outer peripheral edges bending and erectting separately forms the periphery that covers air core coil 10,11, plays a role as motor housing respectively.To form the part of the periphery that covers air core coil 10,11 as first motor housing 16 and second motor housing 17 from the outer peripheral edges bending and erectting separately of this external stator iron core 13,15 below.These first motor housings 16 and second motor housing 17 form drum by pull and stretch processing respectively.
On the external stator iron core 13 of first stator pack 8, be fixed with the mounting panel 18 that uses when being attached to stepping motor 1 on the equipment, but have at the clutch shaft bearing 6 as journal bearing of outlet side rotating shaft 2 free rotary ground supportings in these mounting panel 18 upper supports.In addition, on the external stator iron core 15 of second stator pack 9, be fixed with side plate 19, but have at second bearing 7 as journal bearing of a side opposite rotating shaft 2 free rotary ground supportings with outlet side in these side plate 19 upper supports.The external stator iron core 13 of one distolateral ratio first stator pack 8 of the rotating shaft 2 of rotor 4 (outlet side) more laterally is outstanding, and it is driven the output shaft of usefulness as rotation.
Outer circumferential side at the stator 5 of this structure has terminal board 20, and this terminal board 20 is provided with a plurality of terminal pins 21～24 of twining for the winding of drawing from air core coil 10,11 terminal 10a, 11a.
In the stepping motor 1 that constitutes like this, pass to rated current by air core coil 10,11 to stator 5, utilize the magnetic interaction between stator 5 and the rotor magnet 3 to come the rotor magnet 3 rotation application of forces are made rotating shaft 2 rotations that form as one with it.In addition, because the action of above-mentioned stepping motor 1 is identical with the action of known stepping motor, therefore omit its detailed description.
Shown in Fig. 2 (a), terminal board 20 is formed by the resin material of insulation, be the roughly H shape that is formed with two notch part 20a that on axis direction, cut out towards the relative form of embedded hole 20f that forms in the central, be provided with four pedestal part 20b, 20c, 20d, 20e, four terminal pins 21,22,23,24 are installed on pedestal part 20b, 20c, 20d, 20e.
In Fig. 2 (a), on the terminal pins 21,22 in left side, twine the terminal 10a of winding that draws from the air core coil 10 of first stator pack 8.In addition, on the terminal pins 23,24 on right side, twine the terminal 11a of winding that draws from the air core coil 11 of second stator pack 9.
More specifically, the medial surface 20aa of this notch part 20a is cut into and is equipped with the roughly the same position, position of each terminal pins 21～24, utilizes this notch part 20a to cut apart and has formed four pedestal part 20b～20e.In addition, this notch part 20a becomes at the lead division that supplies winding terminal 10a, 11a to pass through that will use when the winding that air core coil 10,11 is drawn terminal 10a, 11a are wound on each terminal pins 21～24.In this example, because this medial surface 20aa as the notch part 20a of lead division is cut into the roughly the same position of extrusion position with the winding wound portion 21b～24b of each terminal pins 21～24, therefore for example can under the situation of the end face of the sub-platform 20 of no-go end and side, winding terminal 10a, 11a be wound on each terminal pins 21～24.Therefore, can on winding terminal 10a, 11a, not apply excessive tension force, and winding terminal 10a, 11a can not link up with on the end face of terminal board 20 and side, first motor housing 16, second motor housing 17, therefore, can prevent broken string and damage.
These terminal pins 21～24 are set as one by inlaying to be shaped when the terminal board 20 that ester moulding is made of insulating element.In this case, each terminal pins 21～24 has: imbed installation portion 21a～24a that terminal board 20 installs and the winding wound portion 21b～24b that twines for winding terminal 10a, 11a.
As shown in Figure 2, the installation portion 21a～24a of terminal pins 21～24 is towards imbedding in the terminal board 20 with the direction of the axis direction almost parallel of stepping motor 1.In addition, the winding wound portion 21b～24b of terminal pins 21～24 to above-mentioned installation portion 21a～24a the different direction of direction is set, be the direction bending that the axis direction with motor 1 intersects in this case, be provided with highlightedly from the pedestal part 20b～20e of terminal board 20.That is, terminal pins 21～24 is the L word shape.In addition, be for the second maintaining part 12d, the chimeric open pore of 14d that form on as described later the 12b of eaves portion, the 14b at the embedded hole 20f that the central authorities of terminal board 20 form at internal stator iron core 12,14.
Fig. 3 represents is the state that the internal stator iron core 14 of the internal stator iron core 12 of first stator pack 8 and second stator pack 9 disposes back-to-back.Base end side at utmost point tooth 12a, the 14a of internal stator iron core 12,14 is provided with the 12b of eaves portion, the 14b that launches to periphery side ring shape.The 12b of eaves portion, 14b are provided with the terminal board maintaining part 30,31 of fixed terminal platform 20 usefulness.
On the terminal board maintaining part 30 that forms on the 12b of eaves portion of internal stator iron core 12, be formed with: flat first maintaining part (the first bottom supporting portion) 12c of the bottom surface 20g of ground bending extension, support terminals platform 20 from the 12b of eaves portion towards the axis direction approximate right angle; And extend equally and flat second maintaining part (location division) 12d chimeric with the embedded hole 20f of terminal board 20, that terminal board 20 is positioned at axial and circumferential with internal stator iron core 14 from the 12b of eaves portion towards the direction of intersecting with axis direction.
Equally, on the terminal board maintaining part 31 of internal stator iron core 14, be formed with: flat first maintaining part (the first bottom supporting portion) 14c of the bottom surface 20h of ground bending extension, support terminals platform 20 from the 14b of eaves portion towards the axis direction approximate right angle; And extend equally and flat second maintaining part (location division) 14d chimeric with the embedded hole 20f of terminal board 20, that terminal board 20 is positioned at axial and circumferential with the second maintaining part 12d of internal stator iron core 12 from the 14b of eaves portion towards the direction of intersecting with axis direction.
These terminal board maintaining parts 30,31 are respectively formed at the 12b of eaves portion, 14b same distolateral of internal stator iron core 12,14, constitute respectively: the second maintaining part 12d, 14d are formed on the substantial middle position of terminal board maintaining part 30,31, and the first maintaining part 12c, 14c is formed on the second maintaining part 12d, position that 14d is different, promptly be on the diagonal position of central authorities with the second maintaining part 12d, 14d.The first maintaining part 12c, 14c only are formed on a side adjacent with the second maintaining part 12d, 14d to be formed on the parallel position across the state of notch part 12e, 14e with the second maintaining part 12d, 14d in this example.
In addition, be formed with stage portion 12f, 14f with the second maintaining part 12d, opposite side (side opposite) that 14d is adjacent with the first maintaining part 12c, 14c, this stage portion 12f, 14f extend towards the direction of intersecting with axis direction from the 12b of eaves portion, 14b with the form identical with the second maintaining part 12d, 14d, the front position of this stage portion 12f, 14f and the first maintaining part 12c, 14c are roughly the same from the 12b of eaves portion, 14b bent position, constitute the second bottom supporting portion (auxiliary bottom supporting portion) of the bottom surface 20 of support terminals platform 20.In this case, shown in Fig. 3 (b), the 12b of eaves portion of internal stator iron core 12 goes up the axis direction left side that the first maintaining part 12c that forms is configured in the second maintaining part 12d, and the stage portion 12f of the second maintaining part 12d is configured in the axis direction right side of the second maintaining part 12d.The first maintaining part 14c, the second maintaining part 14d, the stage portion 14f of internal stator iron core 14 that is configured in the rear side of the internal stator iron core 12 shown in Fig. 3 (b) also is same configuration.
That is, shown in Fig. 3 (a)～Fig. 3 (c), internal stator iron core 12 and internal stator iron core 14 so that the overlapping form of the second maintaining part 14d of second maintaining part 12d of internal stator iron core 12 and internal stator iron core 14 dispose back-to-back.Chimeric by the embedded hole 20f that makes the second maintaining part 12d, the 14d that are in this overlap condition and terminal board 20, terminal board 20 is remained on the terminal board maintaining part 30,31, on axial and circumferential, position.In addition, the first maintaining part 12c, 14c and stage portion 12f, 14f are respectively with not overlapping in the axial direction form configuration, can support the bottom surface of big as far as possible scope.In addition, between the first maintaining part 12c, 14c and the second maintaining part 12d, 14d, be formed with circular-arc notch part 12e, 14e, by this notch part 12e, 14e are set, even when constituting the first maintaining part 12c, 14c with stator core itself, also can easily carry out Bending Processing, can easily constitute.In addition, between stage portion 12f, 14f and the second maintaining part 12d, 14d, also be formed with circular-arc notch part 12g, 14g, because this notch part 12g, 14g become the processing that forms stage portion 12f, 14f and carry out easily.
What Fig. 4 represented is that terminal board 20 is fixed on the state on the terminal board maintaining part 30,31.As shown in Figure 4, chimeric by the embedded hole 20f that makes the second maintaining part 12d, the 14d that are in overlap condition and terminal board 20, terminal board 20 is fixed on the terminal board maintaining part 30,31.At this moment, the bottom surface 20g of the pedestal part 20b of terminal board 20 is supported by the flat first maintaining part 12c that the terminal board maintaining part 30 of internal stator iron core 12 is provided with, and the bottom surface 20h of the pedestal part 20e of terminal board 20 is supported by the flat first maintaining part 14c that the terminal board maintaining part 31 of internal stator iron core 14 is provided with.In addition, near the pedestal part 20c of terminal board 20 bottom surface 20g is supported by the stage portion 12f that forms on the 12b of eaves portion adjacent with the second maintaining part 12d, and near the bottom surface 20h the pedestal part 20d of terminal board 20 is supported by the stage portion 14f that forms on the 14b of eaves portion adjacent with the second maintaining part 14d.
In addition, shown in Fig. 4 (a), Fig. 4 (c), the length dimension of the first maintaining part 12c, 14c all forms the roughly length dimension about half of the axis direction length of pedestal part 20b, 20e.Particularly, the axial forward end of the first maintaining part 12c that forms on internal stator iron core 12 extends to the axial outer fix of position of the winding wound portion 21b of terminal pins 21, and, on circumferentially (left and right directions among the above-below direction among Fig. 4 (a), Fig. 4 (b)), also supporting the position in the outside, position that is positioned at winding wound portion 21b.The first maintaining part 14c that forms on internal stator iron core 14 is opposite with the direction of the first maintaining part 12c, also extend to the axial outer fix of position of the winding wound portion 24b of terminal pins 24, and, in the position of upwards also supporting the outside, position that is positioned at winding wound portion 24b week.The width dimensions of the first maintaining part 12c, 14c (left and right directions among the above-below direction among Fig. 4 (a), Fig. 4 (b)) all forms the roughly width dimensions about half of the Width size of pedestal part 20b, 20e.Therefore, if on the position of pedestal part 20b, 20e terminal board 20 is being pressed on the internal stator iron core 12,14, utilize under the state in the middle of then can being clipped at embedded hole 20f with terminal board 20 be respectively formed on the symmetric position and two first maintaining part 12c, 14c of two internal stator iron cores 12,14 that direction is opposite in the bottom surface of the position upper support terminal board 20 in winding wound portion 21b, the 24b outside, therefore, can prevent the inclination of terminal board.
In addition, the embedded hole 20f of terminal board 20 forms the size of the thickness same degree of the second maintaining part 12d, the 14d that with two-phase, promptly are in overlap condition, but because bottom surface 20g, the 20h of terminal board 20 are located on radial direction by the flat first maintaining part 12c, 14c and stage portion 12f, 14f, therefore the second maintaining part 12d, 14d can not be projected into the outside of radial direction from embedded hole 20f.That is, stage portion 12f, 14f also play a role as the location division of the radial direction inboard of terminal board 20.
Adopt the motor 1 of this example, under the 12b of eaves portion of the internal stator iron core 14 of the internal stator iron core 12 that makes first stator pack 8 and second stator pack 9, state that 14b overlaps each other, the chimeric second maintaining part 12d, 14d are maintained in the embedded hole 20f that terminal board 20 forms by portion in the central.In addition, the bottom surface 20g of the pedestal part 20b of terminal board 20 is supported by the flat first maintaining part 12c that forms to a lateral bending Qu Yanshen of axis direction from the 12b of eaves portion of internal stator iron core 12, and the locational stage portion 12f that forms on the 12b of eaves portion that the bottom surface 20g of the pedestal part 20c of terminal board 20 is clipped the second maintaining part 12d supports.The bottom surface 20h of the pedestal part 20e of terminal board 20 is supported by the flat first maintaining part 14c that forms to the opposite side bending extension of axis direction from the 14b of eaves portion of internal stator iron core 14, and the locational stage portion 14f that forms on the 14b of eaves portion that the bottom surface 20h of the pedestal part 20d of terminal board 20 is clipped the second maintaining part 14d supports.Promptly, the central portion of terminal board 20 is supported by the second maintaining part 12d, 14d, four stage portion 20b～20e must be by any support among the first maintaining part 12c, 14c, stage portion 12f, the 14f, therefore, can be fixed with stable status by the terminal board 20 that they support, and can prevent that it from moving or inclination because of carelessness to axis direction.
In addition, with power supply substrate mountings such as flexible wiring substrate to terminal board 20 and be wrapped in terminal pins 21～24 on the terminal 10a of winding, when 11a is connected, also can utilize the first maintaining part 12c, 14c, the second maintaining part 12d, 14d, stage portion 12f, 14f to bear the power that is applied on the terminal board 20, therefore, the processing etc. that connects the circuit pattern of flexible wiring substrate putting power supply substrate such as flexible wiring substrate on the terminal board 20 on terminal pins 21～24 becomes and carries out easily.
In addition, the first maintaining part 12c, the 14c and the second maintaining part 12d, the 14d that form on internal stator iron core 12,14 are formed on the same distolateral of the 12b of eaves portion, 14b, the second maintaining part 12d, 14d are formed on the substantial middle position of terminal board maintaining part 30,31, and on the first maintaining part 12c, 14c the is formed on position different with the second maintaining part 12d, 14d, that is to say, the first maintaining part 12c, 14c only be formed on and the second maintaining part 12d, 14d between across the adjacent side of the state of notch part 12e, 14e.Therefore, the terminal 10a of the winding of drawing from air core coil 10 and the first maintaining part 12c, the terminal 11a of winding and the first maintaining part 14c that draw from air core coil 11 do not interfere, thereby can prevent broken string or the damage of winding end 10a, 11a.And, owing to can drawing from the notch part 20a of the terminal board 20 on the circumferential position identical with forming the flat second maintaining part 12d, 14d, winding terminal 10a, 11a be wrapped on each terminal pins 21～24, notch part 20a forms and makes its medial surface 20aa than the more close embedded hole 20f of the axial forward end side of the first maintaining part 12c, 14c, promptly be near the position of winding wound portion 21b～24b, therefore, can be by the first maintaining part 12c, 14c influence, the winding processing of winding terminal 10a, 11a becomes and carries out easily.
In addition, the first maintaining part 12c, 14c towards with erect the vertical cube of the utmost point tooth 12a, the 14a that form to identical direction bending extension from the inner peripheral of the 12b of eaves portion, 14b.Therefore, the processing of the first maintaining part 12c, 14c can be carried out simultaneously with the processing that is bent to form utmost point tooth 12a, 14a, can improve the working (machining) efficiency of internal stator iron core 12,14.
Fig. 5 and Fig. 6 are the 1st variation of the included stator core 12,14 of the above-mentioned stepping motor of expression 1.The identical symbol of the structure tag identical with above-mentioned example is omitted its explanation, is that the center describes with the difference.
What Fig. 5 represented is internal stator iron core 40 and internal stator iron core 41 stacked state on axis direction of the 1st variation.What Fig. 5 (a) represented is vertical view, and what Fig. 5 (b) represented is end view, and what Fig. 5 (c) represented is front view.On the terminal board maintaining part 42 that the 12b of eaves portion of internal stator iron core 40 forms, be formed with: two first maintaining part 40a, the 40b of the bottom surface 20g of ground bending extension, support terminals platform 20 from the 12b of eaves portion towards the axis direction approximate right angle; And equally from the 12b of eaves portion towards the direction extension that intersects with axis direction and the second maintaining part 40c chimeric with the embedded hole 20f of terminal board 20.
Equally, on the terminal board maintaining part 43 of internal stator iron core 41, be formed with: two first maintaining part 41a, the 41b of the bottom surface 20h of ground bending extension, support terminals platform 20 from the 14b of eaves portion towards the axis direction approximate right angle; And equally from the 14b of eaves portion towards the direction extension that intersects with axis direction and the second maintaining part 41c chimeric with the embedded hole 20f of terminal board 20.
These terminal board maintaining parts 42,43 all are formed on the 12b of eaves portion, 14b same distolateral of internal stator iron core 40,41, constitute respectively: the second maintaining part 40c, 41c are formed on the substantial middle position of terminal board maintaining part 42,43, and on the first maintaining part 40a, 40b, 41a, 41b the is formed on position different with the second maintaining part 40c, 41c.
In this case, shown in the end view of Fig. 5 (b), the left and right sides that the first maintaining part 40a that forms on the 12b of eaves portion of internal stator iron core 40,40b are configured in the second maintaining part 40c.The first maintaining part 41a, 41b, the second maintaining part 41c of internal stator iron core 41 that is configured in the rear side of the internal stator iron core 40 shown in Fig. 5 (b) also constitutes same configuration.In addition, be formed with circular- arc notch part 40d, 40e between the first maintaining part 40a, the 40b of internal stator iron core 40 and the second maintaining part 40c, because this notch part 40d, 40e, the bending machining of the first maintaining part 40a, 40b becomes and carries out easily.Equally, be formed with circular- arc notch part 41d, 41e between the first maintaining part 41a, the 41b of internal stator iron core 41 and the second maintaining part 41c, because this notch part 41d, 41e, the bending machining of the first maintaining part 41a, 41b becomes and carries out easily.
As shown in Figure 5, internal stator iron core 40 and internal stator iron core 41 dispose back-to-back, so that the second maintaining part 41c of second maintaining part 40c of internal stator iron core 40 and internal stator iron core 41 is just in time overlapping.Chimeric by the embedded hole 20f that makes the second maintaining part 40c, the 41c that are in this overlap condition and terminal board 20, terminal board 20 is fixed on the terminal board maintaining part 42,43.
What Fig. 6 represented is that terminal board 20 is fixed on the state on the terminal board maintaining part 42,43.As shown in the figure, chimeric by the embedded hole 20f that makes the second maintaining part 40c, the 41c that are in overlap condition and terminal board, terminal board 20 is fixed on the terminal board maintaining part 42,43, and, the bottom surface 20g of the pedestal part 20b of terminal board 20,20c is supported by the first maintaining part 40a, the 40b that the terminal board maintaining part 42 of internal stator iron core 40 is provided with, and the bottom surface 20h of the pedestal part 20d of terminal board 20,20e is supported by the first maintaining part 41b, the 41a that the terminal board maintaining part 43 of internal stator iron core 41 is provided with.In this case, the first maintaining part 41a, the 41b that are arranged on the first maintaining part 40a, the 40b on the internal stator iron core 40 and are arranged on the internal stator iron core 41 can make identical with the example that has illustrated with Fig. 1～Fig. 4 with respect to the position of terminal board 20 relation and size thereof etc., but because about the second maintaining part 40c, 41c, both sides are provided with first maintaining part, therefore also its length, width setup can be become littler than above-mentioned example.
Like this, promptly the first maintaining part 40a, 40b, 41a, 41b support, thereby can prevent that terminal board 20 from tilting because of carelessness bottom surface 20g, the 20h of terminal board 20 more firmly by four supporting surfaces.Thus, become easy in the processing etc. that puts flexible wiring substrate on the terminal board 20 and on terminal pins 21～24, connect the circuit pattern of flexible wiring substrate.
Fig. 7 and Fig. 8 represent is the 2nd variation of the included stator core 12,14 of above-mentioned stepping motor 1.The identical symbol of the structure tag identical with above-mentioned example is omitted its explanation, is that the center describes with the difference.In this case, the terminal board 54 that uses in the 2nd variation does not form above-mentioned embedded hole 20f.
What Fig. 7 represented is internal stator iron core 50 and internal stator iron core 51 stacked state on axis direction of the 2nd variation.What Fig. 7 (a) represented is vertical view, and what Fig. 7 (b) represented is end view, and what Fig. 7 (c) represented is front view.Be formed with the first maintaining part 50a on the terminal board maintaining part 52 that the 12b of eaves portion of internal stator iron core 50 forms, this first maintaining part 50a is the ground bending extension from the 12b of eaves portion towards the axis direction approximate right angle, and the bottom surface 20g of terminal board 54 is supported.Equally, be formed with the first maintaining part 51a on the terminal board maintaining part 53 of internal stator iron core 51, this first maintaining part 51a is the ground bending extension from the 14b of eaves portion towards the axis direction approximate right angle, and the bottom surface 20h of terminal board 54 is supported.
These terminal board maintaining parts 52,53 are respectively formed at the 12b of eaves portion, 14b same distolateral of internal stator iron core 50,51, and constitute respectively: the first maintaining part 50a, 51a are formed on the position of staggering a little from the opposite towards each other direction of middle position of terminal board maintaining part 52,53.
As shown in Figure 7, internal stator iron core 50 and internal stator iron core 51 dispose back-to-back, so that the first maintaining part 51a of first maintaining part 50a of internal stator iron core 50 and internal stator iron core 51 is overlapping with the form that staggers.In this case, by the width of the extend first maintaining part 50a, 51a, stably bottom surface 20g, the 20h of support terminals platform 20.
Fig. 8 represents is that terminal board 54 utilizes binding agent etc. to be fixed on state on the terminal board maintaining part 52,53.In this case, near the bottom surface 20g of the pedestal part 20b of terminal board 54 and the notch part 20a bottom surface 20g is supported by the first maintaining part 50a that the terminal board maintaining part 52 of internal stator iron core 50 is provided with, and near the bottom surface 20h the bottom surface 20h of the pedestal part 20e of terminal board 54 and the notch part 20a is supported by the first maintaining part 51a that the terminal board maintaining part 53 of internal stator iron core 51 is provided with.In this case, the same with above-mentioned example, preferably make on internal stator iron core 50,51 axial forward end of the first maintaining part 50a, the 51a that form extend to position than the more close axial outside, position of winding wound portion 21b, the 24b of terminal pins 21,24, and, also supporting the position in the outside, position that is positioned at winding wound portion 21b, 24b on circumferential (left and right directions among the above-below direction among Fig. 8 (a), Fig. 8 (b)), this helps support terminals platform 20 stably.In addition, in this example, the part of the first maintaining part 50a, 51a extends in the notch part 20a, if winding end (not shown) is wrapped on the winding wound portion 21b～24b of each terminal pins via the side (upside and the downside of the paper of Fig. 8 (a)) of notch part 20a, then can under the situation that prevents terminal broken string of winding or damage, twine.
Like this, bottom surface 20g, the 20h of terminal board 54 just supported by the first maintaining part 50a, 51a, thereby can prevent that terminal board 54 from tilting because of carelessness.Thus, become easy in the processing etc. that puts flexible wiring substrate on the terminal board 54 and on terminal pins 21～24, connect the circuit pattern of flexible wiring substrate.
Above the present invention's the 1st working of an invention form is illustrated, but the present invention is not limited to above-mentioned example, can in the scope that does not break away from purport of the present invention, implements certainly with various forms.For example, the structure that first maintaining part is formed on the internal stator iron core is illustrated above, but also can be that first maintaining part is formed on the structure on the external stator iron core.
(second example)
Stepping motor to second example is elaborated with reference to the accompanying drawings.Second example describes the 2nd invention.Fig. 9 is used for the sectional side view that the schematic configuration to the stepping motor 200 of the present invention's second example describes, Figure 10 is the vertical view of stepping motor 200, and Figure 11 is the vertical view that is used for stepping motor 200 that the state that flexible wiring substrate described later has been installed is described.Because the electric machine structure of this stepping motor 200 is identical with above-mentioned first example, so to the identical symbol of identical structure tag and omit its explanation, be that the center describes with the difference.
Stepping motor 200 shown in Figure 9 also comprises internal stator iron core 12,14, base end side at utmost point tooth 12a, 14a is provided with the 12b of eaves portion, the 14b that enlarges to outer circumferential side, the 12b of eaves portion, 14b are provided with i.e. second maintaining part (location division) of maintaining part 12d, 14d that the fixed terminal platform uses, but are not arranged on first maintaining part (the first bottom supporting portion) that is provided with on the internal stator iron core 12,14 of first example in this stepping motor shown in Figure 9 200.
At the outer circumferential side mounting terminal platform 120 of the stator 5 of this structure, this terminal board 120 is provided with a plurality of terminal pins 121a～121d that twines for the winding of drawing from drive coil 10,11 terminal 10a, 10b and 11a, 11b.As described later, the difference of this second example and above-mentioned first example is the structure of terminal board 120.
In the stepping motor 200 of second example, as shown in figure 10, be formed with four notch part 120a～120d at the periphery of terminal board 120.In addition, four terminal pins 121a～121d are installed on terminal board 120, and are formed with embedded hole 120f in central authorities.Terminal board maintaining part 12d, 14d by chimeric internal stator iron core 12,14 in this embedded hole 120f are fixed on terminal board 120 on the stator 5.
Terminal pins 121a～121d is the terminal that is used for drive coil 10,11 supply capabilities.Terminal pins 121a～121d is arranged to one by inlaying to be shaped when the terminal board 120 that is made of insulating element carries out ester moulding.
In the terminal pins 121a～121d of configuration like this, on terminal pins 121a, the 121b of first stator pack, 8 sides, twine the winding terminal 10a, the 10b that draw from drive coil 10.In addition, on terminal pins 121c, the 121d of second stator pack, 9 sides, twine winding terminal 11a, the 11b that draws from drive coil 11.At this, in this example, terminal pins 121a, the 121c (terminal pins in first stator pack 8, second stator pack, 9 left sides among Figure 10) of terminal 10a of a winding that is wound with drive coil 10,11 and 11a are called the first terminal pin, terminal pins 121b, the 121d (terminal pins on first stator pack 8, second stator pack, 9 right sides among Figure 10) that is wound with another winding terminal 10b, 11b is called second terminal pins.
At this, can be clear and definite by Figure 10, terminal pins 121a～121d is provided with along the axis direction (X-axis) of rotating shaft 2.Especially in this example, be positioned at the outside of the center on the terminal pins 121a in each stator pack 8,9 outsides and the axis direction that 121d is configured in each stator pack 8,9.Particularly, terminal pins 121a, a 121d of each stator pack 8,9 is arranged at the eaves portion side that the base end side of utmost point tooth 13a, the 15a of stator core outside 13,15 forms with respect to the 12b of eaves portion, the 14b of internal stator iron core 12,14, in addition, another terminal pins 121b, 121c are arranged on the 12b of eaves portion, the 14b side of internal stator iron core 12,14 with respect to the eaves portion of external stator iron core 13,15.That is, on Y direction (left and right directions of paper), terminal pins 121a～121d is overlay configuration not.Therefore, with terminal pins along comparing when being provided with the direction (Y-axis) of the orthogonal axe of rotating shaft 2, can guarantee bigger configuration space, thereby can strengthen each terminal pins 121a～121d interval each other.
In addition, terminal pins 121a～121d is that X-axis is (be meant last direction among Figure 10, direction) down configuration about the roughly the same degree ground, center with the axis of rotating shaft 2.That is, be arranged on the above-below direction and separate.If like this configuration, then terminal pins 121a～121d is configured on tetragonal cornerwise position, therefore, compares when disposing terminal pins 121a～121d in a straight line etc., can further strengthen terminal pins 121a～121d interval each other.
In addition, terminal 10a, 10b of winding, 11a, 11b utilize above-mentioned notch part 120a～120d to be wrapped on each terminal pins 121a～121d.In this example, in notch part 120a～120d, notch part 120a and 120c are called first notch part, notch part 120b and 120d are called second notch part.
Can be clear and definite by Figure 10, the terminal 10a of a winding of drive coil 10 is wound on the terminal pins 121a after the electric wire of drive coil 10 is stuck in the notch part 120a earlier again.In addition, the terminal 10b of another winding of drive coil 10 is wound on the terminal pins 121b after the electric wire of drive coil 10 is stuck in the notch part 120b earlier again.Equally, the terminal 11a of the winding of drive coil 11 is wound on the terminal pins 121c in electric wire is stuck in notch part 120c earlier afterwards, and the terminal 11b of the winding of drive coil 11 is wound on the terminal pins 121d in electric wire is stuck in notch part 120d earlier afterwards.
That is, winding terminal 10a, 10b, 11a, the 11b that is wrapped on terminal pins 121a～121d draws and twines towards the rightabout that makes progress in week (last direction on the Y direction or following direction) respectively from locational notch part (along the notch part of the Y direction formation) 120a～120d that is formed on the most close each terminal pins 121a～121d.
Like this, by after founding formation notch part 120a～120d on the terminal pins 121a～121d adjacent position separately that is located on the terminal board, can being stuck in these notch parts 120a～120d earlier, again winding terminal 10a, 10b, 11a, 11b being wound on terminal pins 121a～121d at electric wire with drive coil 10,11.That is, for one among each terminal pins 121a～121d, can use among corresponding notch part 120a～120d, therefore, winding terminal 10a, 10b, 11a, 11b become easy to the winding processing of terminal pins 121a～121d.In addition, winding terminal 10a, 10b, 11a, 11b draw and twine from the locational notch part 120a～120d that is formed on the most close each terminal pins 121a～121d, therefore can prevent from winding terminal 10a, 10b, 11a, 11b to be wrapped in the broken string, the short circuit that contact with each other and cause because of winding terminal 10a, 10b, 11a, 11b on terminal pins 121a～121d more firmly.
In addition, can be clear and definite by Figure 10, above-mentioned notch part 120a～120d forms peripheral part from terminal board 120, and (inlet portion 201a～201d) is towards each self-corresponding terminal pins 121a～121d side front end (shape of leading section 202a～202d) that narrows down.
Like this because inlet portion 201a～201d of notch part 120a～120d opening widely, therefore can be simply with the electrical wire fastener of drive coil 10,11 in notch part 120a～120d.
In addition, because notch part 120a～120d is the shape that the front end that is formed with leading section 202a～202d narrows down, therefore, be stuck in earlier in notch part 120a～120d by electric wire drive coil 10,11, winding terminal 10a, 10b, 11a, 11b become easy to the winding processing of terminal pins 121a～121d, and, winding terminal 10a, 10b, 11a, 11b can be wrapped on terminal pins 121a～121d more firmly.
In addition, as shown in figure 11,, on terminal pins 121a～121d, connecting the flexible wiring substrate (power supply substrate) 150 (having dotted flexible wiring substrate 150 among Figure 11) of constructing allocated circuit for stepping motor 200 is carried out drive controlling.On flexible wiring substrate 150, be formed with pin connecting hole 151a～151d, around pin connecting hole 151a～151d, be formed with the pad L that is used for electric property ground splicing ear pin 121a～121d and flexible wiring substrate 150 with the position relation corresponding with each terminal pins 121a～121d.That is,, flexible wiring substrate 150 is connected on terminal pins 121a～121d by terminal pins 121a～121d being inserted logical this pin connecting hole 151a～151d and carrying out soldering.In addition, in this example, will insert logical pin connecting hole 151a, 151c for the first terminal pin 121a, 121c and be called the first pin connecting hole, pin connecting hole 151b, the 151d that will be connected with the second terminal pins 121b, 121d is called the second pin connecting hole.
In this example, because terminal pins 121a～121d is provided with along the axis direction (directions X) of rotating shaft 2, therefore as mentioned above, terminal pins 121a～121d be the center with the X-axis towards X-direction alternately about (be meant last direction among Fig. 2, direction) down be provided with, thereby can strengthen each terminal pins 121a～121d interval each other.Therefore, can on flexible wiring substrate 150, form the pad L of the required size of soldering.In addition, utilizing automatic winder, can prevent that also its mouth can't be by the problem between the terminal pins with winding terminal 10a, 10b, when 11a, 11b are wound up on terminal pins 121a～121d.
In addition, as shown in figure 11, the distance D a between the outlet side end face of the first terminal pin 121a (and 121c) and stator 5 is designed to big apart from da than between the outlet side end face of first pin connecting hole 151a (and 151c) and flexible wiring substrate 150.In addition, the distance D b between the end face of the second terminal pins 121b (and 121d) and side stator 5 and that outlet side is opposite is designed to big apart from db than between the end face of the second pin connecting hole 151b (and 151d) and a side flexible wiring substrate 150 and that outlet side is opposite.
Because the first terminal pin 121a, 121c and the second terminal pins 121b, 121d are configured to this position relation with respect to stator 5, therefore, flexible wiring substrate 150 can be not outstanding from the axis direction of the rotating shaft 2 of stator 5.Thus, the installing space that can prevent stepping motor 200 is because of flexible wiring substrate 150 becomes greatly, helps to install the miniaturization of the equipment of this stepping motor 200.In addition, best flexible wiring substrate 150 is the Y direction from Figure 11 outstanding (not outstanding from the top of stator 5) not, in this case, can further reduce the installing space of stepping motor 200.
In addition and since terminal pins 121a～121d towards X-direction alternately about (be meant last direction among Figure 10, direction) down be provided with, so can reduce the width of each terminal pins 121a～121d on the Y direction.Therefore, when the length direction of flexible wiring substrate 150 is the X-direction of Figure 11, also substrate can be configured to not outstanding from Y direction.
Stepping motor to the variation of the present invention's second example describes with reference to the accompanying drawings.Figure 12 is the sectional side view of the schematic configuration of this stepping motor 300 of expression, and Figure 13 is the vertical view (state that does not connect flexible wiring substrate 150) of this stepping motor 300.To with above-mentioned Fig. 9 to the identical identical symbol of structure tag of example shown in Figure 11, and be that the center describes with the difference.
As shown in figure 12, this stepping motor 300 is the same with above-mentioned second example, comprising: rotor 4, this rotor 4 have rotating shaft 2 and the rotor magnet (permanent magnet) 3 that is fixed in the rotating shaft 2; And stator 5, this stator 5 separates relative with gap configuration with rotor magnet 3.
Outer circumferential side at the stator 5 of this structure has terminal board 120, and this terminal board 120 is provided with a plurality of terminal pins 121a～121d that twines for the winding of drawing from drive coil 10,11 terminal 10a, 10b and 11a, 11b.
On terminal board 120, the same with above-mentioned example, terminal pins 121a～121d is provided with along the axis direction (X-axis) of rotating shaft 2.By such configuration terminal pins 121a～121d, can strengthen each terminal pins 121a～121d interval each other.
In addition, terminal pins 121a～121d be the center with the X-axis towards X-direction alternately about (be meant last direction among Figure 13, direction) down be provided with, can further strengthen terminal pins 121a～121d interval each other.
As the parts that support this terminal board 120, the 12b of eaves portion, the 14b that constitute the internal stator iron core 12,14 of stator 5 are provided with the terminal board maintaining part 30,31 of fixed terminal platform 120 usefulness.
In this example (variation), as terminal board maintaining part 30,31, employing be Fig. 1, structure shown in Figure 3.That is, on the terminal board maintaining part 30 that forms on the 12b of eaves portion of internal stator iron core 12, be formed with: the first maintaining part 12c of the axis direction bending extension from the 12b of eaves portion towards rotating shaft 2, the bottom surface 120e of support terminals platform 120; And extend equally from the 12b of eaves portion towards the direction of intersecting with axis direction, and the second chimeric maintaining part 12d of embedded hole 120f of terminal board 120.
Equally, on the terminal board maintaining part 31 of internal stator iron core 14, be formed with: from the 14b of eaves portion erect, the first maintaining part 14c of the bottom surface 120e of support terminals platform 120; And equally from the 14b of eaves portion erect, with the second chimeric maintaining part 14d of embedded hole 120f of terminal board 120.
Each second maintaining part 12d, 14d is formed on the substantial middle position of stator 5, and, the first maintaining part 12c, 14c can make structure shown in Figure 3 basically, but the position of the terminal pins 121a of terminal board 120～121d is different with the terminal board with terminal pins 21～24 20 shown in Figure 2, therefore, preferably corresponding with the position of these terminal pins 121a～121d, the axial forward end of the first maintaining part 12c that forms is extended to and the position of same degree in the axial direction, the position of terminal pins 121b, and make progress in week (above-below direction among Figure 13) also support the position than the more lateral, position of terminal pins 121b.Be preferably on the internal stator iron core 14 the first maintaining part 14c that forms too, extend on the contrary and the position of same degree in the axial direction, the position of terminal pins 121c with the first maintaining part 12c direction, and in the position of upwards also supporting in week than the more lateral, position of terminal pins 121c.
As shown in figure 12, internal stator iron core 12 and internal stator iron core 14 overlay configuration on axis direction, so that the second maintaining part 14d of second maintaining part 12d of internal stator iron core 12 and internal stator iron core 14 is just in time overlapping, chimeric by the embedded hole 120f that makes the second maintaining part 12d, the 14d that are in this overlap condition and terminal board 120, terminal board 120 is fixed on the terminal board maintaining part 30,31.
In this example, the same with first example that has illustrated, the bottom surface 120e of terminal board 120 is set at the first maintaining part 12c on the terminal board maintaining part 30 of internal stator iron core 12 and the first maintaining part 14c that is arranged on the terminal board maintaining part 31 of internal stator iron core 14 supports.
Like this, make the embedded hole 120f of the second maintaining part 12d, 14d and terminal board 120 chimeric, and utilize from the 12b of eaves portion, 14b and erect the first maintaining part 12c, the bottom surface 120e that 14c comes support terminals platform 120 that forms, therefore, can prevent that terminal board 120 from tilting because of carelessness at axis direction with on perpendicular to the direction of axis.Thus, the processing etc. that puts flexible wiring substrate and connect the circuit pattern of flexible wiring substrate 150 at terminal pins 121a～121d on terminal board 120 becomes and carries out easily.
Stepping motor to other variation of expression the present invention second example describes with reference to the accompanying drawings.Figure 14 is the sectional side view of the schematic configuration of this stepping motor 400 of expression, and Figure 15 is its vertical view (state that does not connect flexible wiring substrate).To the structure tag identical symbol identical, and be that the center describes with the difference with above-mentioned first example.
In this example, be accommodated in drive coil 10,11 in the stator 5 (first stator pack 8 and second stator pack 9) and be wound on respectively on first bobbin 101, second bobbin 102 and be contained.
These bobbins 101 and 102 are made of the 101a of tube portion, the 102a and the 101b of eaves portion, the 102b that reel for drive coil 10,11 respectively.In addition, the first terminal platform 301, second terminal board 302 from the 101b of eaves portion, 102b towards rotating shaft 2 the axis direction bending extension and form as one.
At this, the first terminal platform 301 and second terminal board 302 are bent to form towards the direction of leaving from bobbin 101,102 respectively.This be because, if form the words of the first terminal platform 301 and second terminal board 302 with the form adjacent with bobbin 101,102, the first terminal platform 301 and second terminal board 302 can cover the tube 101a of portion, 102a, thereby during the coiling winding, the first terminal platform 301 and second terminal board 302 can become obstruction on bobbin 101,102.
When the bobbin 101,102 that will form like this disposes back-to-back, as shown in figure 15, the first terminal platform 301 and 302 engagings of second terminal board, thus terminal board 320 formed.On terminal board 320, the same with above-mentioned second example, terminal pins 121a～121d is provided with along the axis direction (X-axis) of rotating shaft 2.Thus, can strengthen each terminal pins 121a～121d interval each other.
In addition, the same with above-mentioned second example, terminal pins 121a～121d be the center with the X-axis towards X-direction alternately about (be meant last direction among Figure 15, direction) down be provided with, can further strengthen terminal pins 121a～121d interval each other.
Adopt the stepping motor 400 of this structure, terminal board 320 is dividing in the first terminal platform 301 that forms on first bobbin 101 and second terminal board 302 that forms on second bobbin 102, the first terminal platform 301 and 302 splits of second terminal board form, therefore, the assembling of stepping motor becomes easy.In addition, because the first terminal platform 301 and second terminal board 302 form one with bobbin 101,102 respectively, therefore need not to reduce the manufacturing cost of stepping motor significantly as other parts mounting terminal platform 320.
Like this, adopt the stepping motor 200,300,400 of this example, owing to, therefore can between each terminal pins, guarantee enough big interval along the axis direction configuration terminal pins 121a～121d of the rotating shaft 2 of stepping motor 200,300,400.Thus, can prevent to be used for the winding of drive coil 10,11 terminal 10a, 11a be wound up into the automatic winder on terminal pins 121a～121d mouth can't by the problem between terminal pins 121a～121d and with flexible wiring substrate 150 that terminal pins 121a～121d is connected on can't guarantee to be used to form the problem in space and so on that scolder is coated with the pad L of required size.
In this case, the first terminal pin 121a (121c) and the second terminal pins 121b (121d) the direction (Y direction) with axis direction (X-direction) quadrature of rotating shaft 2 go up towards X-direction alternately about (be meant last direction among Figure 10, Figure 13, Figure 15, direction) down setting.In addition, on Y direction, terminal pins 121a～121d is overlay configuration not.Therefore, can between the first terminal pin 121a (121c) and the second terminal pins 121b (121d), guarantee bigger interval.
In addition, the first terminal pin 121a, 121c are equipped with the flexible wiring substrate 150 that is formed with the first pin connecting hole 151a, 151c and the second pin connecting hole 151b, 151d on correspondence position respectively than the second terminal pins 121b, the more close outlet side of 121d on this first terminal pin 121a, 121c and the second terminal pins 121b, 121d.And on the axis direction of rotating shaft 2, the distance between the outlet side end face of flexible wiring substrate 150 and the first pin connecting hole 151a, the 151c is designed to less than the distance between the outlet side end face of the first terminal pin 121a, 121c and stator 5.Distance between the end face of a side opposite with outlet side of flexible wiring substrate 150 and the second pin connecting hole 151b, the 151d is designed to less than the distance between the end face of a side second terminal pins 121b, 121d and stator 5 and that outlet side is opposite.Adopt this structure, the flexible wiring substrate 150 that is installed on the stepping motor 200,300,400 can be not outstanding from stator 5, can prevent the required installing space of stepping motor 200,300,400 because of flexible wiring substrate becomes greatly, help to install the miniaturization of the equipment of stepping motor 200,300,400.
In addition, adopt Figure 12, stepping motor 300 shown in Figure 13, on internal stator iron core 12,14, be formed with the terminal board maintaining part 30,31 that keeps terminal board 120, in this terminal board maintaining part 30,31, the first maintaining part 12c and the 14c axis direction from the peripheral end of stator 5 towards rotating shaft 2 extends, and the bottom surface 120e of terminal board 120 is supported.Thus, can prevent that terminal board 120 from tilting because of carelessness, on terminal board 120, put processing that flexible wiring substrate 150 connects etc. and become easy.
In addition, even stator 5 is the stepping motors 200,300,400 that are made of first stator pack 8 and second stator pack, 9 two-phase stators as this example, because being configured in the first terminal pin 121a, 121c on each stator pack 8,9 and the second terminal pins 121b, 121d is configured on the terminal board 120 along the axis direction of rotating shaft 2, therefore, can fully guarantee interval between each terminal pins 121a～121d.Especially as this example, with being positioned at the terminal pins 121a in the outside and the outside of the axial centre position that 121d is configured to be positioned at each stator pack 8,9 in each stator pack 8,9, can between each terminal pins 121a～121d, guarantee enough intervals reliably.
In addition, in this example, be configured in the first terminal pin 121a and the second terminal pins 121b on first stator pack 8 and be configured on second stator pack 9 the first terminal pin 121c and the second terminal pins 121d with the direction (Y direction) of axis direction (X-direction) quadrature of rotating shaft 2 on all be configured on the different positions, particularly be that to be configured in axis direction with rotating shaft 2 be on the position of roughly equally spaced separating up and down, center.Adopt this structure, in stepping motor 200,300,400, can between each terminal pins 121a～121d, guarantee bigger interval with two-phase stator.
In addition, adopt the stepping motor 400 that has illustrated, terminal board 320 forms by being configured in the first terminal platform 301 on first stator pack 8 (bobbin 101) and second terminal board 302 that is configured on second stator pack 9 (bobbin 102), and the first terminal platform 301 and 302 splits of second terminal board form.Adopt this structure, the assembling of stepping motor 400 becomes easily, can reduce manufacturing cost significantly.
Above example of the present invention is illustrated, but the present invention is not limited to above-mentioned example, can in the scope that does not break away from purport of the present invention, implements certainly with various forms.For example, above-mentioned stepping motor is two phase structures, but also can apply the present invention to the stepping motor of the above structure of single-phase structure or three-phase.

Claims (24)

1. stepping motor comprises: rotor, this rotor comprise rotating shaft and the permanent magnet that has in the periphery of this rotating shaft; Stator, this stator have erects the stator core that is formed with utmost point tooth; Drive coil, this drive coil is configured in the outer circumferential side of described utmost point tooth; And terminal board, this terminal board is configured in the outer circumferential side of described stator, it is characterized in that,
Eaves portion in described stator core is provided with the terminal board maintaining part that keeps described terminal board,
On described terminal board maintaining part, be formed with first maintaining part that the bottom surface of described terminal board is supported, the axis direction bending extension of this first maintaining part from described eaves portion towards motor.
2. stepping motor as claimed in claim 1 is characterized in that, is formed with second maintaining part that described terminal board is supported on described terminal board maintaining part, and this second maintaining part is extended towards the direction of intersecting with described axis direction from described eaves portion.
3. stepping motor as claimed in claim 2 is characterized in that, described first maintaining part and described second maintaining part prolong from the described eaves portion of described stator core and form.
4. stepping motor as claimed in claim 3 is characterized in that,
Described first maintaining part and described second maintaining part are formed on the same distolateral of described eaves portion,
Described second maintaining part is formed on the middle position of described eaves portion, and described first maintaining part week upwards on the position different with described second maintaining part axis direction towards motor be bent to form.
5. stepping motor as claimed in claim 4, it is characterized in that, on described terminal board, be formed with and the chimeric embedded hole of described second maintaining part, described terminal board with make described second maintaining part and described embedded hole chimeric the time described first maintaining part and the bottom surface butt of described terminal board, described terminal board the bottom surface installed by the state that described first maintaining part supports.
6. stepping motor as claimed in claim 5 is characterized in that, is formed with stage portion at the cardinal extremity of described second maintaining part, and the front position of described stage portion is identical with the position of the seating surface that is bent to form of described first maintaining part.
7. stepping motor as claimed in claim 3 is characterized in that, described first maintaining part of described terminal board maintaining part from described eaves portion towards extending to identical direction with the vertical cube of described utmost point tooth.
8. stepping motor as claimed in claim 1 is characterized in that, described stator is made of two groups of stator pack, is formed with the described terminal board maintaining part with described first maintaining part in the eaves portion of described two groups stator pack stator core separately.
9. stepping motor as claimed in claim 8 is characterized in that,
Described two groups of stator pack comprise respectively: internal stator iron core and external stator iron core, and this external stator iron core is clamped in described drive coil between itself and the internal stator iron core,
Two described internal stator iron cores dispose back-to-back,
On described two internal stator iron cores, be formed with respectively: described first maintaining part; And second maintaining part of extending from described eaves portion towards the direction of intersecting with described axis direction, described terminal board being supported.
10. stepping motor as claimed in claim 9 is characterized in that,
Central authorities at described terminal board are formed with and the chimeric embedded hole of described second maintaining part that is separately positioned on described two internal stator iron cores, on described axis direction two side positions of described embedded hole, be respectively arranged with the winding wound portion of a plurality of terminal pins that are connected with the described drive coil of described two groups of stator pack
When described two internal stator iron cores disposed back-to-back, described second maintaining part that is separately positioned on described two internal stator iron cores constitutes described second maintaining part, and was chimeric with the described embedded hole of described terminal board,
Be separately positioned in the middle of described first maintaining part on described two internal stator iron cores is clipped in described second maintaining part, be respectively formed on the rightabout on the described axis direction, on described axis direction two side positions of the described embedded hole of described terminal board, utilize described two first maintaining parts to support the bottom surface of described terminal board.
11. stepping motor as claimed in claim 10, it is characterized in that described first maintaining part that is separately positioned on described two internal stator iron cores extends to form to the position of the described winding wound portion of the locational described terminal pins in described axis direction both sides that is arranged on described embedded hole.
12. stepping motor as claimed in claim 11, it is characterized in that, the axial forward end of described first maintaining part extends to the position than the more close described axial outside, position of the described winding wound portion of described terminal pins, upwards also forms the position of support than the more close outside, position of described winding wound portion in week.
13. a stepping motor comprises: rotor, this rotor comprise rotating shaft and the permanent magnet that has in the periphery of this rotating shaft; Stator, this stator have erects the stator core that is formed with utmost point tooth; Drive coil, this drive coil is configured in the outer circumferential side of described utmost point tooth; Terminal board, this terminal board is configured in the outer circumferential side of described stator; And a plurality of terminal pins, these a plurality of terminal pins are configured on the described terminal board, it is characterized in that, described a plurality of terminal pins comprises: for the terminal the first terminal pin that twines of a winding of described coil and for terminal second terminal pins of twining of another winding of described coil, described the first terminal pin and described second terminal pins are configured on the described terminal board along the axis direction of described rotating shaft.
14. stepping motor as claimed in claim 13 is characterized in that, described the first terminal pin and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on all be configured on the different positions.
15. stepping motor as claimed in claim 14 is characterized in that, described the first terminal pin and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on form in the middle of being clipped in axis with described rotating shaft be configured on the different positions.
16. stepping motor as claimed in claim 13, it is characterized in that, be formed with first notch part corresponding and second notch part corresponding with described second terminal pins with described the first terminal pin in the peripheral part of described terminal board, described first notch part and described second notch part all are formed on the adjacent position of corresponding described terminal pins on the direction of described terminal board and axis direction quadrature described rotating shaft, a winding end of described coil is drawn and is wrapped on the described the first terminal pin from described first notch part, and another winding end of described coil is drawn and is wrapped on described second terminal pins from described second notch part.
17. stepping motor as claimed in claim 16 is characterized in that, described first notch part and second notch part are the shapes that the peripheral part from described terminal board narrows down towards described terminal pins side front end.
18. stepping motor as claimed in claim 17 is characterized in that,
Described the first terminal pin and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on form in the middle of being clipped in axis with described rotating shaft be configured on the different positions,
Described first notch part and described second notch part that are arranged on the described terminal board cut out on week makes progress opposite directions on the position corresponding with described the first terminal pin and described second terminal pins,
A winding of described coil another winding end terminal and described coil is upwards being drawn and is being wrapped on described the first terminal pin and described second terminal pins in week the other way around.
19. stepping motor as claimed in claim 13, it is characterized in that, described the first terminal pin is than the more close outlet side of described second terminal pins, the power supply substrate that is formed with the first pin connecting hole and the second pin connecting hole on correspondence position respectively is installed on described the first terminal pin and described second terminal pins, on the axis direction of described rotating shaft, distance between the outlet side end face of described power supply substrate and the described first pin connecting hole is less than the outlet side end face of described stator and the distance between the described the first terminal pin, and the distance between the end face of a side opposite with outlet side of described power supply substrate and the described second pin connecting hole is less than the end face of a side described stator and that outlet side is opposite and the distance between described second terminal pins.
20. stepping motor as claimed in claim 13, it is characterized in that, in described stator core, be formed with the terminal board maintaining part that keeps described terminal board, the axis direction of this terminal board maintaining part from the peripheral end of described stator towards described rotating shaft extends, with the end face butt of described terminal board, prevent that described terminal board from tilting at described axis direction.
21. stepping motor as claimed in claim 13, it is characterized in that, described stator is made of two groups of stator pack, is configured in described the first terminal pin and described second terminal pins on the stator pack and the described the first terminal pin and described second terminal pins that are configured on another stator pack are configured on the described terminal board along the axis direction of described rotating shaft respectively.
22. stepping motor as claimed in claim 21, it is characterized in that, be configured in described the first terminal pin and described second terminal pins on the described stator pack and be configured on described another stator pack described the first terminal pin and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on all be configured on the different positions.
23. stepping motor as claimed in claim 22, it is characterized in that, described two groups of stator pack described the first terminal pin separately and described second terminal pins with the direction of the axis direction quadrature of described rotating shaft on form in the middle of being clipped in axis with described rotating shaft be configured on the different positions.
24. stepping motor as claimed in claim 21, it is characterized in that, described terminal board is formed by second terminal board that is configured in the first terminal platform on the described stator pack and be configured on described another stator pack, and described the first terminal platform and the described second terminal board split form.
CNA2008102146731A 2007-08-31 2008-08-28 Stepping motor Pending CN101378221A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102035282A (en) * 2009-09-24 2011-04-27 日本电产三协株式会社 Coil wound body and motor
CN110034640A (en) * 2018-01-12 2019-07-19 日本电产三协电子(东莞)有限公司 The manufacturing method of motor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6848796B2 (en) * 2017-10-02 2021-03-24 トヨタ自動車株式会社 Rotating machine
JP2022102076A (en) 2020-12-25 2022-07-07 日本電産サンキョー株式会社 Motor and pumping device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102035282A (en) * 2009-09-24 2011-04-27 日本电产三协株式会社 Coil wound body and motor
CN110034640A (en) * 2018-01-12 2019-07-19 日本电产三协电子(东莞)有限公司 The manufacturing method of motor
CN110034640B (en) * 2018-01-12 2020-07-28 日本电产三协电子(东莞)有限公司 Method for manufacturing motor

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