JP2007171061A - Inspection device of stator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a work before and after execution of various inspections to a stator. <P>SOLUTION: This device comprises a neutral point forming means for fixing a pair of pinching members comprising a conductive material between ends at a prescribed interval on a base comprising a non-conductive material, inserting/pinching collectively each lead-out wire on one side of each winding of U-phase, V-phase and W-phase wound on a stator core, and forming a neutral point by connecting electrically each lead-out wire; three pinching means wherein the each lead-out wire on the other side of each winding is individually inserted/pinched, having each clip-shaped constitution equipped with a fixing member comprising the conductive material equipped respectively with a conductive blade body, an L-shaped movable member journaled movably to the fixing member, a spring member for pressing/energizing the movable member regularly to the conductive blade body side of the fixing member, and an adjusting member forming a prescribed interval between the end of the conductive blade body provided on the fixing member and the movable member journaled to the fixing member; and an inspection means connected electrically to each pinching means through lead wires. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement in an inspection apparatus for performing various inspections on a stator (for example, an inspection on a withstand voltage and an insulation resistance, a rare test, etc.).

  Conventionally, as a stator used for an electric motor, for example, there is one disclosed in Patent Document 1. In other words, the stator is formed by injection molding or the like of a stator core provided with a plurality of teeth on the inner periphery of the yoke portion, and a synthetic resin almost all over the outer periphery of the stator core and the tip of the teeth. And a winding formed by winding a coil element wire (for example, enameled wire) by the required number of phases to the required teeth of the stator core via an insulator, and the winding end side in the winding of each phase The lead wire and the lead wire on the winding start side are individually connected to a printed circuit board disposed on the stator core via a terminal member implanted in the printed circuit board. At this time, each terminal member to which each lead wire on the winding end side is connected is connected to the same circuit pattern formed on the printed circuit board (that is, each terminal member is connected via the circuit pattern). And the terminal members to which the lead wires on the winding start side are connected are connected to individual circuit patterns formed on the printed circuit board, respectively. Is in a star-connected state.

JP 2005-20851 A

  When various inspections are performed on the stator configured as described above (e.g., an inspection regarding a withstand voltage and an insulation resistance, a rare test, etc.), a voltage higher than a normal applied voltage (e.g., about 500 to 2000 V) is applied to the stator. For example, when an electronic component such as a Hall element that detects the rotational position of the rotor is mounted on a printed circuit board, the electronic voltage such as the Hall element is applied by the high voltage. Serious problems such as damage to parts may occur. For this reason, various inspections for this type of stator are often performed before connecting the lead wires to the terminal members implanted in the printed circuit board.

  However, when performing various inspections before connecting the lead wire to the terminal member implanted in the printed circuit board as described above, for example, twisting the leading end of each lead wire on the winding end side and soldering By forming the neutral point by connecting, etc., and soldering the insulating coating (enamel coating) formed on the tip of each lead wire on the winding start side After peeling by heating, the inspection device was individually held between clip members connected to each phase via lead wires, etc., and in this state, various inspections for the stator were performed. It took a lot of time and labor for the preparation process before performing, and it was very troublesome.

  In addition, after performing various inspections on the stator in the above-described state, when each lead wire is individually connected to a terminal member implanted on the printed circuit board, each lead wire on the winding end side twists its tip. The neutral point is formed by connecting and performing soldering etc., and in this state, the connection tip to the terminal member is hindered. Cut with a tool and each lead wire on the winding end side must be connected to the terminal member in a state of being separated (separated) one by one. Soldering or the like is applied to remove the insulating coating (enamel coating) on the part, and it is difficult to connect to the terminal member in this state. Cut with the tool of Since it was connected to the terminal member in a state where the padding and the like were removed, the lead wires were individually connected to the terminal member implanted on the printed circuit board after various inspections on the stator. Various operations are required for connection, which is very troublesome.

  In view of the various problems described above, an object of the present invention is to provide a stator inspection apparatus that can simplify operations before and after performing various inspections on a stator.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that one lead wire in each of the U-phase, V-phase, and W-phase windings wound around the stator core is collectively inserted and clamped. The neutral point forming means for electrically connecting the lead wires to form a neutral point, and the other lead wire in each of the U-phase, V-phase, and W-phase windings are individually inserted and clamped 3 Each of the clamping means and an inspection means electrically connected to each of the clamping means via a lead wire, and the neutral point forming means is electrically connected to a base made of a non-conductive material such as a synthetic resin. A pair of sandwiching members made of a conductive material, with the sharpened ends facing each other and fixed in a state where a predetermined gap is provided between the ends, and the sandwiching means includes A fixing member made of a conductive material having a conductive blade having a sharp end. An L-shaped movable member pivotally supported by a pivot shaft with respect to the fixed member, a spring member that constantly presses and urges the movable member toward the conductive blade of the fixed member, and the fixed It is characterized in that it is configured in a clip shape with an adjusting member that forms a predetermined gap between the sharp end of the conductive blade provided in the member and the movable member pivotally supported by the fixed member. .

  According to a second aspect of the present invention, there is provided the stator inspection apparatus according to the first aspect, wherein the pair of sandwiching members includes a lead wire that is inserted and sandwiched between the sharp ends of the pair of sandwiching members. It is fixed to the base in a state that can be appropriately changed according to the wire diameter, and the gap is set to be substantially the same as or slightly smaller than the wire diameter of the lead wire. To do.

  According to a third aspect of the present invention, in the stator inspection device according to the first or second aspect, the pair of clamping members are chamfered at the upper ends of the sharp end portions.

  According to a fourth aspect of the present invention, there is provided the stator inspection apparatus according to the first aspect, wherein the fixing member has a thin plate-like conductive blade body with one end sharpened on the upper end surface of the fixed seat. Between the fixed seat and the fixed plate fastened and fixed to the fixed seat. It is characterized by being sandwiched between the two.

  According to a fifth aspect of the present invention, in the stator inspection device according to the first or fourth aspect, the adjustment member is screwed to the fixed member so as to be able to advance and retreat, and a tip portion thereof is brought into contact with the movable member. The gap formed between the conducting blade provided on the fixed member and the movable member pivotally supported by the fixed member by the advance / retreat operation corresponds to the wire diameter of the lead wire inserted and sandwiched in the gap. Thus, it is characterized in that it is set so as to be almost the same as or slightly smaller than the diameter of the lead wire.

  According to the first aspect of the present invention, one lead wire in each of the U-phase, V-phase, and W-phase windings wound around the stator core is provided with a sharp end in the pair of holding members of the neutral point forming means. By inserting and clamping between the parts in a lump, each of the leader lines is clamped in a state where the insulating film formed on the outer periphery of each of the leader lines is peeled off by sliding contact with the pair of clamping members. It is electrically connected through a member to form a neutral point, and the other lead wire in each of the U-phase, V-phase and W-phase windings wound around the stator core is provided in the fixing member of the clamping means The insulating coating formed on the outer periphery of each of the lead lines is inserted into and sandwiched between the conductive blade body and the movable member pivotally supported by the fixed member. In the state of being pierced, bring the lead wires into contact with the conductive blade. And since it was made to electrically connect with the inspection means via the lead wire connected to the conductive blade body → the fixed member → the fixed member, when performing various inspections on the stator, Insulation formed at the tip of the other lead wire in the winding of each phase by twisting the tip of one lead wire and connecting them by soldering etc. Since there is no need to perform an operation of peeling the film by soldering or the like, it is possible to simplify and quickly and easily perform various operations before and after performing various inspections on the stator. it can.

  According to the second aspect of the present invention, the gap provided between the sharp end portions of the pair of holding members constituting the neutral point forming means is one of the windings of each phase inserted and held in the gap. The lead wire can be set to be substantially the same as or slightly smaller than the lead wire diameter, so that the lead wire is cut between sharp ends. The insulating coating formed on the outer periphery of the portion that is slidably contacted with the sharp end portion by being slidably contacted with the sharp end portion at the time of insertion is reliably peeled off (stripped). Thus, as a result of being able to be sandwiched between the sharp end portions, the lead wires can be electrically connected via a pair of clamping members, so that a neutral point can be easily formed. Further, the neutral point forming means is convenient because it is not necessary to prepare a plurality of the neutral point forming means corresponding to the wire diameter of the lead wire.

  According to the third aspect of the present invention, since the pair of sandwiching members constituting the neutral point forming means are chamfered at the upper end side of the sharp end portions, one lead wire in the winding of each phase is And, it can be inserted and clamped between the pair of clamping members smoothly and quickly without being caught or cut by the upper end side of the sharp end.

  According to invention of Claim 4, the fixing member which comprises a clamping means is the fitting groove | channel which provided the thin plate-shaped conduction | electrical_connection blade body which made one end sharpened in the upper end surface of the fixed seat. The sharp end is fitted with a predetermined dimension protruding toward the movable member, and is sandwiched between the fixed seat and a fixed plate fastened and fixed to the fixed seat. Therefore, even when the conductive blade is repeatedly in contact with the other lead wire in the winding of each phase, the pinching between the fixed seat and the fixed plate is released even if the blade is lost or worn over time. Thus, it is possible to easily replace only the conductive blade, which is very convenient. Further, since the conductive blade body is sandwiched between the fixed seat and the fixed plate in a state where the conductive blade body is fitted in a fitting groove recessed in the upper end surface of the fixed seat, each lead wire is moved to the movable member. The conductive blades do not swing at all, and each lead wire can be held in a state of being always facing the movable member.

  According to the fifth aspect of the present invention, the gap formed between the sharp end of the conductive blade provided in the fixing member and the movable member pivotally supported by the fixing member is formed by the adjusting member. Corresponding to the wire diameter of the lead wire inserted / clamped in the gap, it can be set / adjusted so that it is almost the same as or slightly smaller than the wire diameter of the lead wire. Even if the lead wire inserted between the end portion of the lead wire and the movable member is pressed and clamped to the conductive blade side by the movable member using the biasing force of the spring member, the conductive blade body is Therefore, the lead wire can be surely prevented from being cut by the conductive blade body. Further, since the holding means includes the adjusting member, it is not necessary to prepare a plurality of holding means corresponding to the wire diameter of the lead wire, which is convenient.

  The best mode for carrying out the present invention will be described below with reference to FIGS. First, FIG. 1 is a schematic connection diagram showing an example when various inspections are performed using the stator inspection apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a stator. The stator 1 includes a stator core 2 in which a plurality of teeth 2a (12 pieces in FIG. 1) are provided at equal intervals on the inner peripheral side of the yoke portion, and the fixed An insulator 3 formed by injection molding or the like of a synthetic resin on almost the whole area excluding the outer periphery of the core 2 and the tip of the tooth 2a, and a coil element through the insulator 3 to a required tooth 2a provided on the stator core 2. Each of the U-phase, V-phase, and W-phase windings 4u, 4v, and 4w is formed by winding a wire (for example, enamel wire) a required number of times.

  The stator 1 includes one lead wire (for example, a lead wire on the winding end side) 4u1 to 4w1 and the other lead wire (for example, a lead wire on the winding end side) of the windings 4u to 4w of each phase constituting the stator 1. There is also provided a printed circuit board provided with a terminal member to which 4u2 to 4w2 are connected, but various inspections on the stator 1 are performed on one of the windings 4u to 4w of each phase. The printed circuit board is not shown in FIG. 1 because it is performed before connecting the lines 4u1 to 4w1 and the other lead lines 4u2 to 4w2 to the terminal members of the printed circuit board.

  Next, in FIG. 1, reference numeral 5 denotes each of the above-mentioned drawers by collectively inserting and holding one lead wire (for example, a lead wire on the winding end side) 4u1 to 4w1 in the windings 4u to 4w of each phase. Neutral point forming means for electrically connecting the lines 4u1 to 4w1 to form a neutral point. The configuration will be described below with reference to FIGS.

  In FIG. 2, 6 is a rectangular base made of a non-conductive material such as synthetic resin, and a predetermined width dimension and depth at which a pair of sandwiching members 7 and 7 to be described later are fitted at predetermined positions on the upper surface thereof. A concave groove 6a having a size is recessed from the upper left to the lower right in FIG. Further, at the bottom of the concave groove 6a, a horizontally long hole 6b through which a bolt 8 for fastening and fixing a pair of clamping members 7, 7 to be described later to the base 6 is inserted at a predetermined interval. In the provided state, the groove 6a is formed along the length direction (from the upper left to the lower right in FIG. 2).

  In FIG. 2, reference numerals 7 and 7 denote a pair of rectangular parallelepiped clamping members made of a conductive material fastened and fixed to the base 6 using bolts 8. In the pair of clamping members 7 and 7, One (opposite side) end is formed in a sharp shape. The upper end side of the sharp end portions 7a, 7a is chamfered in, for example, an arc shape. Further, a through hole 7b through which the bolt 8 passes is drilled on the other end side of the pair of holding members 7 and 7 located on the opposite side to the sharp end portions 7a and 7a.

  Then, as shown in FIG. 3, the pair of holding members 7 and 7 are fitted in the groove 6a provided in the upper surface of the base 6 with the sharp end portions 7a and 7a facing each other. Then, a through hole 7b drilled in the end opposite to the sharp end 7a, 7a in the pair of clamping members 7, 7 and a hole formed in the bottom of the groove 6a of the base 6 A bolt 9 is passed through 6b, and a nut 9 (see FIG. 2) is screwed onto the tip of the bolt 8 projecting from the lower surface of the base 6 so that the pair of clamping members 7, 7 are attached to the base 6. The neutral point forming means 5 is configured by fastening and fixing so as not to swing.

  When the pair of sandwiching members 7 and 7 are fastened and fixed to the base 6, a predetermined gap, for example, the above-described gap between the opposing sharp ends 7a and 7a is shown in FIG. A gap t1 that is substantially the same as or slightly smaller than the wire diameter of the lead wires 4u1 to 4w1 (see FIGS. 1 and 4) inserted between the sharp end portions 7a and 7a is provided. Further, a gap t1 between the sharp end portions 7a and 7a is formed by a bolt 8 for fastening and fixing the pair of sandwiching members 7 and 7 to the base 6 at the bottom of the concave groove 6a of the base 6. In relation to the insertion (penetration) of the horizontally elongated hole 6b, it can be easily made within the range of the horizontally elongated hole 6b corresponding to the wire diameter of the lead wires 4u1 to 4w1 inserted and clamped in the gap t1. It is possible to change.

  Next, in FIG. 1, 10u, 10v, and 10w are clip-like shapes in which the other lead wires (for example, lead wires on the winding start side) 4u2 to 4w2 in the windings 4u to 4w of each phase are individually inserted and sandwiched. Each of the clamping means 10u to 10w is clamped and fixed on the base 11 made of a non-conductive material such as synthetic resin by using bolts 12 from the back side of the base 11 respectively. (See FIG. 5). Hereinafter, the structure of the said clamping means 10u-10w is demonstrated, referring FIG. 5 thru | or FIG. In addition, since each said clamping means 10u-10w is the same structure, it demonstrates here taking the clamping means 10u as an example.

  In FIG. 5, reference numeral 13 denotes a fixing member made of a conductive material that is fastened and fixed on the base 11 from the back side using bolts 12. The fixing member 13 is as shown in FIGS. 6 and 7. In addition, a fixed seat 14 having a U-shaped planar shape by projecting a pair of support portions 14a, and a conductive blade 15 made of a thin plate-like conductive material having one end side sharpened, The conductive blade 15 is provided with a fixed plate 16 that holds the conductive blade 15 between the upper end surface of the fixed seat 14. Then, the conductive blade 15 is inserted into the fitting groove 14b provided in the upper end surface of the fixed seat 14, and the sharpened one end is the end of the fixed seat 14 facing the movable member 17 described later. Then, the fixing plate 16 is fastened and fixed to the upper end surface of the fixing seat 14 using a bolt 16a, and the fixing seat 14 and the fixing plate 16 are fixed. By sandwiching the conductive blade 15 therebetween, the fixing member 13 is configured in a state in which a sharp conductive blade 15 is detachably provided as shown in FIG. The pair of support portions 14a projecting from the fixed seat 14 are provided for pivotally supporting a movable member 17 (described later) with respect to the fixed seat 14 at corners located on the upper end side thereof. A through hole 14c through which the pivot shaft 18 is inserted is drilled.

  Subsequently, in FIG. 5, reference numeral 17 denotes a movable member that is pivotally supported with respect to the fixed member 13 using a pivot shaft 18, and the movable member 17 is, as shown in FIGS. A pressing body 19 made of a metal material formed in an L-shape and, for example, a concave portion 19a provided in a vertical surface located on one end side of the pressing body 19 are opposed to the conductive blade body 15 of the fixing member 13. A clamping member 20 made of a metal material different from the pressing body 19 that is fitted in a state and is fastened and fixed using a bolt 20a, a synthetic resin attached to the other end side of the pressing body 19, and the like The push button 21 which consists of is comprised. The pressing body 19 and the pressing member 20 may be integrally formed of the same metal material instead of being formed separately from different metal materials. Further, the bent portion (right angle portion) of the pressing body 19 has a through hole through which a pivot shaft 18 for pivotally supporting the pressing body 19 (movable member 17) with respect to the fixed member 13 passes. 19b is perforated.

  Then, as shown in FIG. 6, the vertical surface side of the pressing body 19 of the movable member 17 is inserted between a pair of support portions 14 a protruding from the fixed seat 14 of the fixed member 13, and the pair of support of the fixed seat 14 is inserted. In a state where the through hole 14c drilled in the portion 14a and the through hole 19b drilled in the pressing body 19 of the movable member 17 are matched, the pivot shaft 18 is passed through the through hole 14c and the through hole 19b, and By fitting a retaining ring or the like on the end of the pivot shaft 18 projecting from the through hole 14c, the movable member 17 can rotate about the pivot shaft 18 as shown in FIG. The fixed member 13 can be pivotally supported.

  Next, in FIG. 5, 22 is inserted between the movable member 17 and the base 11, and the movable member 17 is moved in the counterclockwise direction in FIG. 5 (that is, the conductive blade 15 side of the fixed member 13). As shown in FIG. 5, for example, the lower end portion of the spring member is always pressed and urged, and is engaged with an engaging groove 11a formed in the base 11 so as not to swing and withdraw.

  Next, in FIG. 5, reference numeral 23 denotes a predetermined gap between the conductive blade 15 provided in the fixed member 13 and the pressing member 20 provided in the movable member 17, for example, the conductive blade 15 and the pressing member 20. Adjustment consisting of a bolt or the like for forming a gap t2 (see FIG. 9) that is substantially the same as or slightly smaller than the wire diameter of the other lead wires 4u2 to 4w2 in the phase windings 4u to 4w inserted between As shown in FIGS. 5 and 9, the adjusting member 23 is screwed so as to be able to advance and retreat in a predetermined portion (a portion facing the vertical surface of the movable member 17) of the fixed seat 14 constituting the fixed member 13. At the same time, the leading end protruding from the fixed seat 14 toward the movable member 17 is in contact with the vertical surface of the pressing body 19 of the movable member 17.

  When the adjusting member 23 is moved forward in the right direction in FIGS. 5 and 9, the movable member 17 is pushed in the clockwise direction in FIGS. 5 and 9 against the urging force of the spring member 22. When the gap t2 between the conductive blade 15 provided on the movable member 17 and the pressing member 20 provided on the movable member 17 can be widened, and conversely, when the adjusting member 23 is moved backward in the left direction in FIGS. As a result of the movable member 17 being pushed counterclockwise in FIGS. 5 and 9 by the biasing force of the spring member 22, the gap t2 can be reduced. That is, the gap t2 is appropriately changed by moving the adjusting member 23 forward and backward in accordance with the wire diameter of each of the lead wires 4u2 to 4w2 inserted between the conductive blade 15 and the pinching member 20. Can be adjusted.

  The holding member 10u of the present invention is constituted by the fixed member 13, the movable member 17, the spring member 22, and the adjusting member 23.

  Next, in FIG. 1, reference numeral 24 denotes inspection means for performing various inspections on the stator 1 (for example, inspection relating to dielectric strength and insulation resistance, rare tests, etc.), and the inspection means 24 includes lead wires 25u to 25w. Is electrically connected to the clamping means 10u to 10w. That is, one end side of the lead wires 25u to 25w is connected to the inspection means 24, and the other end side of the lead wires 25u to 25w is fixed to the clamping means 10u to 10w as shown in FIG. Since the bolts 12 for fastening and fixing the member 13 to the base 11 are connected via terminal members or the like, the lead wires 4u2 to 4w2 inserted and clamped individually into the clamping means 10u to 10w are The conductive blade 15 constituting the fixing member 13 of the clamping means 10u to 10w → the fixing seat 14 also constituting the fixing member 13 → the bolt 12 for fastening and fixing the fixing seat 14 to the base 11 → the bolt 12 It will be electrically connected to the inspection means 24 via the lead wires 25u to 25w. The neutral point forming means 5, the clamping means 10u to 10w, and the inspection means 24 constitute an inspection apparatus for the stator 1 according to the present invention.

  Next, the case where various inspections are performed on the stator 1 by using the stator inspection apparatus according to the present invention will be described. In performing various tests on the stator 1, first, as shown in FIG. 4, one of the lead wires 4 u 1 to 4 w 1 in the windings 4 u to 4 w of each phase provided in the stator 1 is neutral point forming means 5. Are inserted and clamped together between the sharp end portions 7a, 7a of the pair of clamping members 7, 7.

  At this time, a gap t1 is set between the sharp end portions 7a and 7a of the pair of holding members 7 and 7 so as to be substantially the same as or slightly smaller than the wire diameter of each of the lead wires 4u1 to 4w1. Therefore, each of the lead lines 4u1 to 4w1 is in sliding contact with the sharp end portions 7a and 7a when inserted between the sharp end portions 7a and 7a, thereby the sharp end portions. As a result of being sandwiched between the sharp end portions 7a and 7a in a state where the insulating coating (enamel coating) formed on the outer periphery of the portion in sliding contact with 7a and 7a is smoothly and satisfactorily peeled off (peeled off). The lead wires 4u1 to 4w1 can be electrically connected via a pair of clamping members 7 and 7. That is, as shown in FIG. 4, each of the lead lines 4u1 to 4w1 is inserted and sandwiched between the sharp end portions 7a and 7a of the pair of sandwiching members 7 and 7 so that a neutral point is obtained. Can be formed.

  In addition, since the upper ends of the sharp end portions 7a and 7a in the pair of sandwiching members 7 and 7 are chamfered in an arc shape as shown in FIG. 4, for example, the sharp end portions 7a and 7a. The operation of inserting the lead wires 4u1 to 4w1 between them can be quickly and easily performed without cutting the lead wires 4u1 to 4w1. Moreover, since the pair of sandwiching members 7 and 7 are fitted in the concave grooves 6a provided in the upper surface of the base 6, the lead wires 4u1 to 4w1 are inserted between the sharp end portions 7a and 7a. At this time, it is possible to surely prevent the bolt 8 from swinging and to prevent the occurrence of the problem that the gap t1 between the sharp end portions 7a and 7a is changed.

  Subsequently, the movable member 17 of the clamping means 10u to 10w is pressed against the urging force of the spring member 22, and the movable member 17 is rotated about the pivot shaft 18 in the clockwise direction of FIGS. Thus, the gap t2 between the conductive blade 15 of the fixed member 13 and the pinching member 20 of the movable member 17 is widened, and in this state, the leading ends of the other lead wires 4u2 to 4w2 in the windings 4u to 4w of each phase Are individually inserted into the clamping means 10u to 10w, the pressing of the movable member 17 is released, and the movable member 17 is pivoted in the counterclockwise direction of FIGS. By rotating about the support shaft 18, the leading ends of the lead wires 4 u 2 to 4 w 2 are clamped between the conductive blade 15 and the pressing member 20 as shown in FIG.

  At this time, a gap t2 (see FIG. 9) that is substantially the same as or slightly smaller than the wire diameter of the lead wires 4u2 to 4w2 is formed between the conductive blade 15 and the pinching member 20. The lead wires 4u2 to 4w2 inserted between the conductive blade 15 and the pinching member 20 are pressed and clamped by the pinching member 20 to the conductive blade 15 using the biasing force of the spring member 22, As a result of the insulating coating (enamel coating) formed on the outer periphery being pierced by the sharp end of the conductive blade 15 facing the pinching member 20, the lead wires 4u2 to 4w2 and the conductive blade 15 Are electrically connected. As a result, each of the lead wires 4u2 to 4w2 is electrically connected to the inspection means 24 through the conductive blade 15 → the fixed seat 14 → the bolt 12 → the lead wires 25u to 25w.

  The gap t2 formed between the conductive blade 15 and the pinching member 20 is set by the adjusting member 23 to be substantially the same as or slightly smaller than the wire diameter of the lead wires 4u2 to 4w2. Therefore, the movable member 17 is urged counterclockwise in FIG. 10 by the urging force of the spring member 22, and each lead wire 4 u 2 inserted between the pinching member 20 and the conductive blade 15 of the fixed member 13. Even if ˜4w2 is pressed toward the conductive blade 15, the lead wires 4 u 2 to 4 w 2 are never cut by the conductive blade 15.

  As shown in FIGS. 1, 4, and 10, one of the lead wires 4 u 1 to 4 w 1 in the windings 4 u to 4 w of each phase is sharpened in a pair of holding members 7 and 7 constituting the neutral point forming means 5. Are inserted and clamped between the ends 7a, 7a to form a neutral point, and the other lead wires 4u2 to 4w2 in the windings 4u to 4w of each phase are fixed to the fixing member 13 constituting the clamping means 10u to 10w. In this state, the fixed member 13 and the lead wire of the clamping means 10u to 10w are individually inserted and clamped between the sharp conducting blade 15 provided in the above and the pinching member 20 provided in the movable member 17. Various inspections are performed on the stator 1 including the phase windings 4u to 4w using the inspection means 24 connected via 25u to 25w. The detailed contents of various inspections for the stator 1 will not be described. Further, when performing an inspection relating to the insulation resistance of the stator 1, it is necessary to ground the stator core 2 (not shown in FIG. 1).

  Subsequently, when various inspections for the stator 1 are completed, the movable member 17 of the clamping means 10u to 10w is rotated in the clockwise direction in FIGS. By widening the gap t2 (see FIG. 9) between the clamping member 20 and the conductive blade 15 of the fixing member 13, the other lead wires 4u2 to 4w2 in the windings 4u to 4w of each phase are released. The lead wires 4u2 to 4w2 are extracted from between the conductive blade 15 and the pinching member 20, and are inserted and pinched between the pair of pinching members 7 and 7 constituting the neutral point forming means 5. For example, the lead wires 4u1 to 4w1 in the windings 4u to 4w of each phase are severely pressed (contacted) against the sharp ends of the pair of sandwiching members 7 and 7, Or on insertion It is by or pulled upward Conversely, it suffices to withdraw from between the pair of clamping members 7,7. Thereafter, the lead wires 4u1 to 4w1 and 4u2 to 4w2 released from the clamping by the neutral point forming means 5 and the clamping means 10u to 10w are implanted in a printed circuit board (not shown) provided in the stator 1. What is necessary is just to connect individually with respect to the terminal member which is.

  As described above, according to the present invention, when the neutral point is formed when various tests are performed on the stator 1, one of the lead wires 4u1 to 4w1 in the windings 4u to 4w of each phase constituting the stator 1 is formed. Are inserted and clamped together between the sharp end portions 7a and 7a of the pair of clamping members 7 and 7 constituting the neutral point forming means 5, and the lead wires 4u1 to 4w1 are connected to the pair of clamping members 7 respectively. , 7 can be used to form a neutral point quickly and easily. Therefore, in order to form a neutral point as in the prior art, the lead lines 4u1 to 4w1 of the respective phases are formed. As a result, it is not necessary to twist the tips and perform soldering or the like, so that the neutral point can be formed efficiently.

  In addition, after various inspections for the stator 1 are completed, each lead wire inserted and clamped between the sharp end portions 7a and 7a of the pair of clamping members 7 and 7 constituting the neutral point forming means 5 The 4u1 to 4w1 are cut by, for example, strongly pressing (contacting) the sharp end portions 7a and 7a, or by pulling up upwards as opposed to insertion. Can be quickly and easily extracted from between the end portions 7a and 7a to cancel the formation of the neutral point, so that it is connected by soldering or the like as before (the neutral point is formed) The leading end of each lead wire is cut using a tool such as a nipper and separated (separated). As a result, after various inspections on the stator 1 are completed, each lead wire 4u1 Pudding not shown It becomes possible to favorably improve the working efficiency to be connected to a terminal member which is implanted in the substrate.

  Furthermore, between the sharp end portions 7a and 7a, for example, a gap t1 that is substantially the same as or slightly smaller than the wire diameter of each of the lead wires 4u1 to 4w1 is provided, so that each of the lead wires 4u1 to 4w1 is provided. Is inserted between the sharp end portions 7a and 7a while being in sliding contact with the sharp end portions 7a and 7a, and is formed on the outer periphery of the portion in sliding contact with the sharp end portions 7a and 7a. The pair of clamping members can be brought into contact with the sharp end portions 7a and 7a of the pair of clamping members 7 and 7 in a state where the coating (enamel coating) is securely peeled off (peeled off). By electrically connecting the lead wires 4u1 to 4w1 via 7 and 7, there is an advantage that a neutral point can be easily formed. Moreover, the gap t1 between the sharp end portions 7a and 7a of the pair of sandwiching members 7 and 7 is a horizontally long hole through which a bolt 8 for fixing the pair of sandwiching members 7 and 7 to the base 6 passes. In the range of 6b, the lead wires 4u1 to 4w1 can be appropriately changed in accordance with the diameters of the lead wires 4u1 to 4w1 inserted and sandwiched between the sharp ends 7a and 7a. Since there is no need to prepare a plurality of neutral point forming means 5 according to the diameter, it is very convenient.

  In addition, since the upper ends of the sharp end portions 7a and 7a in the pair of sandwiching members 7 and 7 are chamfered, for example, in a circular arc shape, each phase between the sharp end portions 7a and 7a. Insertion of one of the lead wires 4u1 to 4w1 in the windings 4u to 4w can be performed quickly and easily without cutting the lead wires 4u1 to 4w1. In addition, since the pair of clamping members 7 and 7 are detachably fastened and fixed to the base 6 using bolts 8 and nuts 9, the sharp end portions 7 a and 7 a are not removed over time. Even when worn or the like, the pair of clamping members 7 and 7 can be easily exchanged by releasing the fastening / fixing by the bolt 8 and the nut 9, which is convenient.

  Further, the clamping means 10u to 10w into which the other lead wires 4u2 to 4w2 in the windings 4u to 4w of the respective phases constituting the stator 1 are individually inserted and clamped are conductive blades having sharpened tips. 15, a fixed member 13, an L-shaped movable member 17 pivotally supported on the fixed member 13 by using a pivot shaft 18, and a conductive blade of the fixed member 13 at all times. Since the spring member 22 is configured to be pressed / biased toward the body 15 side, each lead wire 4u2 inserted between the conductive blade body 15 of the fixed member 13 and the pinching member 20 of the movable member 17 is provided. 4w2 is pressed and clamped to the conductive blade 15 side by the movable member 17 using the urging force of the spring member 22, and the insulating coating (enamel coating) formed on the outer periphery thereof is broken by the conductive blade 15. As a result, each of the leader lines 4u It is possible to electrically connect the ~4w2 conductive blade 15. For this reason, there is no need to peel off the insulating coating (enamel coating) formed on the outer periphery of the leading end of each of the lead wires 4u2 to 4w2 as in the prior art. The preparatory work before performing can be simplified and performed quickly and easily.

  Further, in the clamping means 10u to 10w, a gap t2 between the conductive blade 15 of the fixed member 13 and the clamping member 20 of the movable member 17 includes windings 4u to 4u for each phase inserted into the gap t2. Since the adjustment member 23 for setting and adjusting so as to be substantially the same as or slightly smaller than the wire diameter of the other lead wires 4u2 to 4w2 in 4w is provided, the conductive blade 15 and the pinching member 20 Even if each of the lead wires 4u2 to 4w2 inserted between them is pressed and clamped to the conductive blade 15 side by the movable member 17 using the biasing force of the spring member 22, the conductive blade 15 is It only breaks through the insulating coating (enamel coating) formed on the outer periphery of the wires 4u2 to 4w2 and comes into contact with the lead wires 4u2 to 4w2, and the lead wires 4u2 to 4w2 are cut by the conductive blade body 15. etc It is not at all to say. In addition, the gap t2 formed between the conductive blade 15 of the fixed member 13 and the pinching member 20 of the movable member 17 is a line of lead wires 4u2 to 4w2 inserted into the gap t2 by the adjusting member 23. Corresponding to the diameter of the lead wires 4u2 to 4w2, it can be set and adjusted so as to be almost the same as or slightly smaller than the wire diameter of the lead wires 4u2 to 4w2. Since it is not necessary to prepare a plurality of means 10u to 10w, it is very convenient.

  Further, since the conductive blade 15 is sandwiched between the fixed seat 14 constituting the fixing member 13 and the fixing plate 16 fastened and fixed to the fixed seat 14, the lead wire is drawn out over time. Even if the contact portion with 4u2 to 4w2 is lost or worn, it is possible to replace only the conductive blade 15 by releasing the clamping between the fixed seat 14 and the fixed plate 16, so that Convenient to. Furthermore, since the conductive blade 15 is sandwiched between the fixed seat 14 and the fixed plate 16 in a state of being fitted in the fitting groove 14b provided in the upper end surface of the fixed seat 14, the spring member Even if the lead wires 4u2 to 4w2 are pressed toward the conductive blade 15 by the movable member 17 using the urging force of 22, the conductive blade 15 does not swing due to the pressing force. The blade body 15 always holds the lead wires 4u2 to 4w2 between the movable member 17 and the outer periphery of the lead wires 4u2 to 4w2 while facing the movable member 17 (clamping member 20). It is possible to break through the insulating coating (enamel coating) formed on the lead wire 4u2 to 4w2 and make electrical contact with the lead wires 4u2 to 4w2. In addition, the clamping member 20 of the movable member 17 that clamps the lead wires 4u2 to 4w2 with the conductive blade 15 is fastened and fixed to the recess 19a of the pressing body 19 using bolts 20a. As in the case of the conductive blade 15, when the contact portion with the lead wires 4 u 2 to 4 w 2 wears out over time, it is very convenient because only the clamping member 20 needs to be replaced.

It is a schematic connection diagram which shows an example in the case of performing the various test | inspection with respect to the said stator using the test | inspection apparatus of the stator in this invention. It is a perspective view which decomposes | disassembles and shows a neutral point formation means. It is a perspective view which shows the state which assembled the neutral point formation means. It is a perspective view which shows the state which inserted and clamped one leader line in each phase coil | winding collectively between a pair of clamping members of a neutral point formation means. It is a side view which shows a clamping means. It is a perspective view which decomposes | disassembles and shows the fixing member and movable member of a clamping means. It is a perspective view which decomposes | disassembles and shows the fixing member in a clamping means. It is a perspective view which decomposes | disassembles and shows the movable member in a clamping means. It is a side view which expands and shows the principal part of a clamping means. It is a side view which expands and shows the state which inserted / clamped the other leader line in each phase coil | winding between the fixing member and movable member of the clamping means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stator 2 Stator iron core 4u-4w Winding 4u1-4w1, 4u2-4w2 Lead wire 5 Neutral point formation means 6 Base 7 Clamping member 7a Pointed end 10 Clamping means 13 Fixing member 14 Fixing seat 15 Conductive blade Body 16 Fixed plate 17 Movable member 18 Pivot shaft 19 Press body 20 Clamping member 22 Spring member 23 Adjustment member 24 Inspection means 25u to 25w Lead wire

Claims (5)

  By inserting and clamping one lead wire in each of the U-phase, V-phase, and W-phase windings wound around the stator core, the lead wires are electrically connected to form a neutral point. Neutral point forming means, three clamping means in which the other lead wires in the U-phase, V-phase, and W-phase windings are individually inserted and clamped, and via each clamping means and lead wire The neutral point forming means has a pair of sandwiching members made of a conductive material on a base made of a non-conductive material such as a synthetic resin, and has a sharp shape. The ends are opposed to each other and fixed in a state where a predetermined gap is provided between the ends, and the clamping means includes a conductive blade having a sharpened end. A fixing member made of a conductive material and pivotable with respect to the fixing member using a pivot shaft. An L-shaped movable member, a spring member that constantly presses and urges the movable member toward the conductive blade of the fixed member, a sharp end of the conductive blade provided in the fixed member, and the fixed member. An inspection apparatus for a stator, characterized in that it comprises a clip having an adjustment member that forms a predetermined gap with a movable member that is pivotally supported.   The pair of clamping members are fixed to the base in such a manner that the gap provided between the sharp end portions can be appropriately changed according to the wire diameter of the lead wire inserted and clamped in the gap. 2. The stator inspection apparatus according to claim 1, wherein the gap is set to be substantially the same as or slightly smaller than the wire diameter of the lead wire.   The stator inspection apparatus according to claim 1 or 2, wherein the pair of clamping members are chamfered at an upper end side of a sharp end portion thereof.   The fixing member has a thin plate-like conducting blade body with one end sharpened in a fitting groove recessed in the upper end surface of the fixed seat, and the sharpened end toward the movable member has a predetermined dimension. 2. The stator inspection according to claim 1, wherein the stator is fitted in a protruding state and sandwiched between the fixed seat and a fixed plate fastened and fixed to the fixed seat. apparatus.   The adjusting member is screwed to the fixing member so as to be able to advance and retreat, and a tip portion thereof is brought into contact with the movable member, and the conduction blade body provided in the fixing member by the advance and retreat operation is pivotally supported by the fixing member. The gap formed between the movable member and the movable member is set to be substantially the same as or slightly smaller than the wire diameter of the lead wire inserted and clamped in the gap. 5. The stator inspection apparatus according to claim 1, wherein the stator inspection apparatus is configured as described above.

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