JP2016146685A - Positioning jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform positioning corresponding to coils with different axial lengths.SOLUTION: A positioning jig, which positions coils when molding bus bars on parts of electric wires forming the coils, comprises: a main body part 11; a plurality of wall parts 21 to 23 formed so that reference surfaces 22c and 23b and pressing surfaces 21b and 22b are alternately arranged above the main body part 11; and coil placement parts 31 and 32 which are formed between the reference surfaces 22c and 23b and the pressing surfaces 21b and 22b. Distances between the reference surfaces 22c and 23d and the pressing surfaces 21b and 22b, which form the coil placement parts 31 and 32, are lengths at which the coils can be placed in a state where surfaces at the pressing surfaces 21b and 22b side of a first electric wire which contact the reference surfaces 22c and 23b and surfaces at the reference surfaces 22c and 23c side of a second electric wire which contact the pressing surfaces 21b and 22b contact each other, and the coil placement parts 31 and 32 are formed in plural numbers on the main body part 11 .SELECTED DRAWING: Figure 4

Description

  The present invention relates to a positioning jig used for forming a bus bar of a rectangular wire concentrated winding coil.

  Conventionally, as a technology in such a field, there is JP 2013-005541 A. This publication describes that a bus bar is formed at the inner peripheral end of the edgewise coil, flatwise bent outside the stator core in the radial direction, and edgewise bent around the stator core in the circumferential direction. Yes.

As a result, the height of the stator core in the central axis direction is reduced with respect to the position of the joint portion between the tip of the bus bar and the outer edge of the edgewise coil adjacent to the edgewise coil forming the busbar. The stator is reduced in size by reducing the height of the stator.

  The edgewise coil is a coil formed by bending and winding a flat wire in the width direction. Further, the edgewise bending process is to perform bending process on the long side with one side on the long side in the rectangular cross section of the rectangular wire as the inner side and the other side as the outer side.

  Here, there are motors used for automobiles, motors used for household appliances, and the like, and motors having a size suitable for each purpose are used. The motor uses a coil that matches its size, and the length of the bus bar formed on the coil varies depending on the shaft length of the motor. Therefore, it is necessary to position the coil when forming the bus bar.

  For example, as shown in FIG. 11, positioning of the coil 101 obtained by arranging two rectangular wires having a rectangular cross section in the long side direction and performing edgewise winding is performed by placing the coil 101 on the positioning jig 100. Do. Specifically, the positioning jig 100 inserts the insertion portion 102 on the inner diameter side of the coil 101 to press the reference surface 103 against the inner diameter side of the coil 101 and pushes the processing surface 104 from the outer diameter side of the coil 101. Hit it. As a result, the flat wire 101a on the processing surface side of the coil 101 is pressed against the flat wire 101b on the reference surface side in contact with the reference surface 103, and the flat wire 101b on the reference surface side is positioned.

JP 2013-005541 A

However, when positioning a plurality of coils 101 having different shaft diameters using the related positioning jig 100, the position of the reference surface 103 is changed by replacing the insertion portion 102 and adjusting the position. There was a need. For this reason, it takes time and effort to adjust the insertion portion 102, and the efficiency of forming the bus bar of the coil 101 has been reduced. Accordingly, there has been a demand for a positioning jig that can perform positioning in common even with coils having different axial lengths.
The present invention provides a positioning jig capable of positioning corresponding to coils having different axial lengths.

A positioning jig according to the present invention is a coil positioning jig used when a bus bar is formed on a part of an electric wire forming a coil, and a reference surface and a pressing surface are provided at a main body portion and an upper portion of the main body portion. A plurality of wall portions formed so as to be alternately arranged; and a coil mounting portion formed between the reference surface and the pressing surface; and the reference surface forming the coil mounting portion; The distance of the pressing surface is a state in which the pressing surface side surface of the first electric wire contacting the reference surface and the reference surface side surface of the second electric wire contacting the pressing surface are in contact with each other. And a plurality of the coil mounting portions are formed on the main body portion.
As a result, a plurality of coil mounting portions for restraining the reference-side electric wire contacting the reference surface and the processing-side electric wire contacting the pressing surface between the reference surface and the pressing surface can be provided.

  Thereby, positioning can be performed corresponding to coils having different axial lengths.

FIG. 3 is a top view of the positioning jig according to the first embodiment. 2 is a front view of a positioning jig according to Embodiment 1. FIG. FIG. 3 is a side view of the positioning jig according to the first embodiment. It is IV-IV sectional drawing. It is VV sectional drawing. It is VV sectional drawing of the state which set the other coil with a small coil diameter. FIG. 6 is a top view of a positioning jig according to a second embodiment. 6 is a side view of a positioning jig according to a second embodiment. FIG. It is IX-IX sectional drawing. It is IX-IX sectional drawing of the state which set the other coil with a small coil diameter. It is a figure of the related positioning device.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 5, the positioning jig 1 includes a main body portion 11 that is formed long in the front-rear direction, a first wall portion 21 that is formed at the top and front of the main body portion 11, and a first A second wall portion 22 facing the wall portion 21, a third wall portion 23 facing the second wall portion 22, a fourth wall portion 24 formed in the main body portion 11, A fifth wall portion 25 facing the wall portion 24. Further, the coil 2 is placed on the main body 11.

  The main body 11 is a substantially rectangular parallelepiped base that is formed long in the front-rear direction. The coil 2 is placed on the upper part of the main body 11. In the following description, the lower side in FIG.

  The coil 2 is a rectangular edgewise coil in which two rectangular wires having a rectangular cross section are arranged in the long side direction and edgewise winding is performed. In the following, the length in the long side direction in the cross section of the flat wire may be described as the width W of the flat wire, and the length in the short side direction may be described as the height H of the flat wire.

  Also, in the following, the portion disposed inside on the short side of the coiled portion of the coil 2 is the inner short side portion 2a, the portion disposed outside on the short side is the outer short side portion 2b, and the long side side. The portion disposed inside is referred to as the inner long side portion 2c, and the portion disposed outside on the long side side is referred to as the outer long side portion 2d. Further, the flat wire arranged at the lower end of the inner short side 2a is a flat wire 2e, the flat wire arranged at the lower end of the outer short side 2b is a flat wire 2f, and the flat wire arranged at the lower end of the inner long side 2c. The flat wire 2g is a flat wire, and the flat wire at the lower end of the outer long side 2d is a flat wire 2h.

  The inner short side 2a and the outer short side 2b are arranged so as to extend in the left-right direction at the front part and the rear part of the main body part 11. The inner long side portion 2 c and the outer long side portion 2 d are arranged so as to extend in the front-rear direction on the left and right sides of the main body portion 11. A distal end portion 2 i formed so as to extend from a flat wire 2 f disposed at the lowermost portion of the coil 2 is disposed at a position away from the main body portion 11. A bus bar 2j is formed in the vicinity of the flat wire tip 2i based on the positioning of the flat wire 2e.

  The first wall portion 21 is provided so as to protrude upward in the upper portion on the rear side of the main body portion 11. The upper end portion 21 a of the first wall portion 21 is formed so as to have a height corresponding to approximately two heights H in the stacking direction of the coils 2 from the upper surface of the main body portion 11. A pressing surface 21b is formed on the first wall portion 21 in a flat shape on the front side. The height from the upper surface of the main body 11 to the upper end of the pressing surface 21 b is substantially the same as the height H in the stacking direction of one coil 2. Further, the first wall portion 21 is formed with a tapered surface 21c that is inclined from the upper end portion 21a toward the pressing surface 21b.

  The second wall portion 22 is provided so as to protrude upward in the upper portion on the rear side of the main body portion 11. The second wall portion 22 is disposed in front of the first wall portion 21. The upper end portion 22 a of the second wall portion 22 is formed so as to be disposed at substantially the same height as the upper end portion 21 a of the first wall portion 22. A pressing surface 22b is formed on the front side of the second wall portion 22, and a reference surface 22c is formed on the rear side. The second wall portion 22 has a tapered surface 22d provided to be inclined from the upper end portion 22a to the pressing surface 22b, and a tapered surface 22e provided to be inclined from the upper end portion 22a toward the reference surface 22c. The reference surface 22c of the second wall portion 22 and the pressing surface 21b of the first wall portion 21 are opposed to each other with an interval of approximately two flat wire widths W, and the first coil mounting portion. 31 is formed.

  The third wall portion 23 is provided so as to protrude upward in the upper portion on the rear side of the main body portion 11. The third wall portion 23 is disposed in front of the second wall portion 22. Further, the upper end portion 23 a of the third wall portion 23 is formed so as to be disposed at substantially the same height as the upper end portion 21 a of the first wall portion 22. On the rear side of the third wall portion 23, a flat reference surface 23b is formed. The third wall portion 23 has a tapered surface 23c provided to be inclined from the upper end portion 23a toward the reference surface 23b. The reference surface 23b of the third wall portion 23 and the pressing surface 22c of the second wall portion 22 are opposed to each other with an interval of about two flat wire widths W, and the second coil mounting portion. 32 is formed.

  The fourth wall portion 24 is provided to project upward in the upper right portion of the main body portion 11. The upper end portion 24 a of the fourth wall portion 24 is formed so as to be disposed at substantially the same height as the upper end portion 21 a of the first wall portion 21. The fourth wall portion 24 is formed long in the front-rear direction. A pressing surface 24 b is formed on the right side of the fourth wall portion 24. The fourth wall portion 24 has a tapered surface 24c provided to be inclined from the upper end portion 24a toward the pressing surface 24b.

  The fifth wall portion 25 is connected to the right side surface of the main body portion 11. The upper end portion 25 a of the fifth wall portion 25 is formed so as to be disposed at substantially the same height as the upper end portion 21 a of the first wall portion 21. Note that the fifth wall portion 25 is formed long in the front-rear direction. A flat reference surface 25 b is formed on the left side of the fifth wall portion 25. The fifth wall portion 25 has a tapered surface 25c provided to be inclined from the upper end portion 25a toward the reference surface 25b.

  Next, a method for positioning the coil 2 using the walls 21 to 25 will be described.

  The coil 2 is set above the main body 1. Specifically, the position of the coil 2 is determined such that the inner short side portion 2a and the outer short side portion 2b of the coil 2 are disposed above the first placement portion. Thereafter, a force is applied to the coil 2 downward and the coil 2 is set on the main body 1.

  At this time, the flat wire 2 e disposed below the inner short side 2 a of the coil 2 is guided by the tapered surface 22 e of the second wall portion 22 and disposed on the first coil placement portion 31. The flat wire 2e abuts on the reference surface 22b of the second wall portion 22.

  Further, the rectangular wire 2 f disposed at the lower part of the outer short side 2 b of the coil 2 is guided by the tapered surface 21 c of the first wall portion 21 and is disposed on the first coil placement portion 31. Thereby, the flat wire 2 f comes into contact with the pressing surface 21 b of the first wall portion 21.

  At this time, the flat wire 2f is pressed against the flat wire 2e by the pressing surface 21b, and the flat wire 2e is pressed against the reference surface 22c. Thereby, the reference of the rectangular wire 2e in the coil 2 is performed.

  Similarly, on the long side of the coil 2, the flat wire 2 g is guided between the fourth wall portion 24 and the fifth wall portion 25 by being guided by the tapered surface 25 c of the fifth wall portion 25. At the same time, it comes into contact with the reference surface 25b. Further, the flat wire 2h is guided by the tapered surface 24c of the fourth wall portion 24, is arranged between the fourth wall portion 24 and the fifth wall portion 25, and abuts against the pressing surface 24b. It becomes a state. The flat wire 2h is pressed against the flat wire 2g by the pressing surface 24b, the flat wire 2g is pressed against the reference surface 25b, the reference is performed, and the coil 2 is positioned.

  Thereafter, the bus bar 2j is processed on the tip 2i side of the coil 2 that has been positioned.

  Thereafter, the coil 2 is removed from the positioning jig 1, and the coil 3 having a coil diameter smaller than that of the coil 2 is placed on the positioning jig 1 as shown in FIG. 6.

  At this time, the rectangular wire of the short side portion of the coil 3 is arranged on the second coil mounting portion 32. Thereby, like the coil 2, the coil 3 is pressed by the pressing surface 22b, the reference is performed by the reference surface 23b of the third wall portion 23, and the coil 3 is positioned. Thereafter, processing for forming a bus bar is performed on the distal end side of the positioned coil 3 in the same manner as the coil 2.

  Here, the widths of the first coil mounting portion 31 and the second coil mounting portion 32 on which the coil 2 and the coil 3 are mounted are provided by approximately two widths W of the coil 2 and the coil 3, respectively. It has been. Therefore, by placing the coil 2 on the first coil placement portion 31, it is possible to perform positioning by pressing the rectangular wire 2f to the rectangular wire 2e with a constant size. Similarly, when positioning is performed by placing the coil 3 on the second coil placement portion 32, the positioning can be performed by pressing the coil 3 with a fixed size. Therefore, the positioning jig 1 has the first coil mounting portion 31 and the second coil mounting portion 32, so that the components of the positioning jig 1 can be replaced with respect to the coils 2 and 3 having different diameters. Positioning can be performed.

Embodiment 2. FIG.
Next, the positioning jig 4 that performs positioning by pressing the flat wire 2h of the coil 2 against the flat wire 2g with a constant pressure will be described.

  As shown in FIGS. 7 to 9, the positioning jig 4 includes a fixed portion 41, a moving portion 42 that moves so as to slide in the front-rear direction with respect to the fixed portion 41, and above the fixed portion 41 and the moving portion 42. The cam follower 8 provided in the.

  The coil 5 is a square edgewise coil in which two rectangular wires having a rectangular cross section are arranged in the long side direction and edgewise winding is performed. A portion disposed on the short side of the coiled portion of the coil 5 is defined as an inner short side portion 5a, and a portion disposed on the short side is defined as an outer short side portion 5b. In addition, the rectangular wire disposed at the lower end of the inner short side portion 5a is defined as a flat wire 5e, and the rectangular wire disposed at the lower end of the outer short side portion 5b is defined as a rectangular wire 5f.

  The inner short side portion 5a and the outer short side portion 5b are arranged so as to extend in the left-right direction at the front portion and the rear portion of the main body portion 11. A bus bar 5j is formed on the tip 5i side of the flat wire 5f arranged at the lowermost part of the coil 5 based on the reference of the flat wire 5e.

  The fixing part 41 includes a fixing part main body 50, a first wall part 51, and a second wall part 52.

  The fixed body 50 is a pedestal extending in the front-rear direction. A first wall portion 51 and a second wall portion 52 are erected on the upper portion of the fixed portion main body 50. Note that the fixed portion main body 50 is provided with a through portion 53 through which a third wall portion 61, a fourth wall portion 62, and a cam portion 63 provided in the moving portion 42 described later pass. The through portion 53 is provided to extend in the front-rear direction so that the third wall portion 61, the fourth wall portion 62, and the cam portion 63 are movable in the front-rear direction with respect to the fixed portion 41. Yes. Thereby, the moving part 42 can operate in the front-rear direction relative to the fixed part 41.

  The first wall portion 51 is provided so as to protrude upward in the upper portion on the rear side of the fixing portion 41. The position of the upper end portion 51 a of the first wall portion 51 is formed so as to be approximately two heights H in the stacking direction of the coils 5 from the upper surface of the fixing portion 41 upward. A reference surface 51b is formed on the first wall 51 in a planar shape on the rear side. The distance from the upper end of the reference surface 51b to the upper surface of the fixed portion 41 is substantially the same as the height H of the coil 5 in the stacking direction. The first wall portion 51 has a tapered surface 51c provided to be inclined from the upper end portion 51a toward the reference surface 51b.

  The second wall portion 52 is provided so as to protrude upward at the upper portion on the rear portion side of the fixing portion 41. The second wall portion 52 is disposed in front of the first wall portion 21. The upper end portion 52 a of the second wall portion 52 is formed so as to be disposed at substantially the same height as the upper end portion 51 a of the first wall portion 51. A reference surface 52 b is formed on the rear side of the second wall portion 52. The second wall portion 52 has a tapered surface 52c provided to be inclined from the upper end portion 52a to the reference surface 52b.

  The moving part 42 includes a moving part main body 60, a third wall part 61 that faces the first wall part 51, a fourth wall part 62 that faces the second wall part 52, and a cam surface 63a. A cam portion 63.

  The third wall portion 61 is provided to project upward in the upper part on the rear side of the moving portion 42. The upper end portion 61 a of the third wall portion 61 is formed to be disposed at substantially the same height as the upper end portion 51 a of the first wall portion 51. The third wall portion 61 is disposed behind the first wall portion 51 and faces the first wall portion 51. More specifically, a pressing surface 61 b is formed on the front side of the third wall portion 61, and the pressing surface 61 b faces the reference surface 51 b of the first wall portion 51. A first coil mounting portion 71 on which the coil 5 is mounted is formed between the reference surface 51b and the pressing surface 61b. The third wall portion 61 has a tapered surface 61c provided to be inclined from the upper end portion 61a to the pressing surface 61b.

  The fourth wall portion 62 is provided so as to protrude upward in the upper portion on the rear side of the moving portion 42. The upper end portion 62 a of the fourth wall portion 62 is formed so as to be disposed at substantially the same height as the upper end portion 51 a of the first wall portion 51. The fourth wall portion 62 is disposed behind the first wall portion 51 and in front of the second wall portion 52, and faces the second wall portion 52. More specifically, a pressing surface 62 b is formed on the front side of the fourth wall portion 62, and the pressing surface 62 b faces the reference surface 52 b of the second wall portion 51. A second coil mounting portion 72 on which the coil 6 is mounted is formed between the reference surface 52b and the pressing surface 62b. The third wall portion 61 has a tapered surface 61c provided to be inclined from the upper end portion 61a to the pressing surface 61b.

  The cam portion 63 is provided so as to protrude upward in the upper portion on the rear side of the moving portion 42. The cam portion 63 is provided in front of the fourth wall portion 62. The cam portion 63 has a cam surface 63a provided in a tapered shape from the upper end portion to the rear side.

  The cam follower 8 is a roller whose axis is the left-right direction of the positioning jig 4. The cam follower 8 contacts the cam surface 63a and further descends, thereby pushing the cam surface 63a forward and moving the cam portion 63 forward. The cam follower 8 is connected to an upper block (not shown) provided above the cam follower 8. For example, the cam follower 8 is lowered by the upper block being lowered by the operation of a motor, an actuator or the like.

  Next, the positioning operation by the positioning jig 4 will be described.

  The coil 5 is set on the fixed portion 41. That is, the inner short side portion 5 a and the outer short side portion 5 b of the coil 5 are placed on the first coil placement portion 71.

  At this time, the flat wire 5 e disposed below the inner short side portion 5 a of the coil 5 is guided by the tapered surface 51 c of the first wall portion 51 and disposed on the first coil placement portion 71. Here, the flat wire 5 e comes into contact with the reference surface 51 b of the first wall portion 51.

  Similarly, the flat wire 5 f disposed at the lower portion of the outer short side portion 5 b of the coil 5 is guided by the tapered surface 61 c of the third wall portion 61 and is disposed on the first coil placement portion 71. Thereby, the flat wire 5 f abuts against the pressing surface 61 b of the third wall portion 61.

  The cam follower 8 comes into contact with a cam surface 63a provided on the cam portion 63 and descends as the upper block descends. As a result, a force for driving in the forward direction is generated on the cam surface 63a.

  Here, the cam part 63 is a part of the moving part 42. Therefore, when the force that moves forward in the cam portion 63 is generated, the entire moving portion 42 slides forward with respect to the fixed portion 41. That is, the third wall portion 61 and the fourth wall portion 62 move forward as the cam portion 63 moves forward. That is, by performing the lowering operation as the operation on the drive side of the cam follower 8, the moving unit 42 moves forward as the operation on the driven side.

  Accordingly, in the first coil mounting portion 71, the flat wire 5f is pressed against the flat wire 5e by the pressing surface 61b. At this time, the flat wire 5e is pressed against the reference surface 51b to perform reference, and the coil 5 is positioned.

  Thereafter, the bus bar 5j is processed on the tip 5i side of the coil 5 that has been positioned.

  Note that when the cam follower 8 descends against the cam surface 63a, the upper block to which the cam follower 8 is connected may abut the upper end of the coil 5. Thereby, the moving part 42 is moved forward by the cam follower 8 and the upper block pushes the upper end of the coil 5 downward. Thereby, pressure can be applied in the stacking direction of the coil 5.

  Thereafter, the coil 5 is removed from the positioning jig 4, and the coil 6 having a coil diameter smaller than that of the coil 5 is placed on the positioning jig 4. At this time, the rectangular wire of the short side portion of the coil 6 is disposed on the second coil mounting portion 72. As a result, the coil 6 is pressed by the pressing surface 62 b and the reference is determined by the reference surface 52 b of the second wall portion 52, similarly to the coil 5. Thereby, positioning of the coil 6 is performed. Thereafter, processing for forming a bus bar is performed in the same manner as the coil 5 on the distal end side of the positioned coil 6.

  Thereby, by making the distance that the cam follower 8 descends constant, the flat wire 5f that contacts the pressing surface 62b can be pressed against the flat wire 5e that contacts the reference surface 52b with a constant pressure. Therefore, for example, when a plurality of coils having the same coil diameter as that of the coil 5 are continuously processed to form a bus bar, the coil can be positioned by pressing it with a constant pressure in the same manner. In addition, since the first coil mounting portion 71 and the second coil mounting portion 72 are provided, the positioning jig 4 positions both the coil 5 and the coil 6 having different coil diameters. Can do.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, the positioning jig 1 shown in the first embodiment has been described as having the first coil mounting portion 31 and the second coil mounting portion 32 formed, but not only two. good. Similarly, for the positioning jig 4 shown in the second embodiment, three or more coil placement portions may be formed.

DESCRIPTION OF SYMBOLS 1 ... Positioning jig, 2 ... Coil, 2a ... Inner short side part, 2b ... Outer short side part, 2c ... Inner long side part, 2d ... Outer long side part, 2e ... Flat wire, 2f ... Flat wire, 2g ... Flat wire, 2h ... flat wire, 2i ... tip, 2j ... bus bar, 3 ... coil, 4 ... positioning jig, 5 ... coil, 5a ... inner short side, 5b ... outer short side, 5e ... flat wire, 5f ... flat wire, 5i ... tip, 5j ... bus bar, 6 ... coil, 8 ... cam follower, 11 ... main body, 21 ... first wall, 21a ... upper end, 21b ... pressing surface, 21c ... taper surface, 22 ... second wall, 22a ... upper end, 22b ... pressing surface, 22c ... reference surface, 22d ... tapered surface, 22e ... tapered surface, 23 ... third wall, 23a ... upper end, 23b ... reference surface , 23c ... tapered surface, 24 ... fourth wall, 24a ... upper end, 24b ... pressing surface 24c ... tapered surface, 25 ... fifth wall, 25a ... upper end, 25a ... reference surface, 25b ... reference surface, 25c ... tapered surface, 26 ... wall portion, 31 ... coil mounting portion, 32 ... coil mounting 41, fixed part, 42 ... moving part, 50 ... fixed part main body, 51 ... first wall part, 51a ... upper end part, 51b ... reference plane, 51c ... tapered surface, 52 ... second wall part, 52a ... upper end, 52b ... reference plane, 52c ... tapered surface, 60 ... moving body, 61 ... third wall, 61a ... upper end, 61b ... pressing surface, 61c ... tapered surface, 62 ... fourth wall 62a ... upper end part, 62b ... pressing surface, 63 ... cam part, 63 ... wall part, 63a ... cam surface, 71 ... coil mounting part, 72 ... coil mounting part

Claims (1)

A coil positioning jig for forming a bus bar on a part of an electric wire forming a coil,
The main body,
A plurality of wall portions formed so that a reference surface and a pressing surface are alternately arranged at an upper portion of the main body portion;
A coil mounting portion formed between the reference surface and the pressing surface,
The distance between the reference surface that forms the coil placement portion and the pressing surface is such that the pressing surface side surface of the first electric wire that contacts the reference surface and the second electric wire that contacts the pressing surface are the same. It is a length that can be placed with the surface on the reference surface side in contact with the surface,
A plurality of the coil mounting parts are formed on the main body part,
Coil positioning jig.

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