JP6169895B2 - Electric jig - Google Patents

Description

  The present invention relates to a motor jig used for facilitating these operations when disassembling and assembling a motor for driving a radiator fan mounted on a vehicle.

  As shown in Patent Document 1 below, an electric motor is usually supported by a motor case that constitutes an outer shell thereof, an armature that is housed in the motor case and supported at both ends of the motor case, and the motor case. And a brush that is in sliding contact with the armature and supplies electric power to the armature from the outside.

  Further, conventionally, in an electric motor, the motor case is positioned on the same axis as the armature and has a cylindrical case main body that supports a magnet on the inner peripheral surface, and a first axial end portion of the case main body. A first end plate that closes and opens one end of the armature and supports the first end plate, and a second end that is fixed to the opening edge of the case body by caulking so as to close the second opening. A second end plate, and a boss formed on an outer surface of the second end plate on the shaft and supporting the other end of the armature, wherein the brush is a second end of the motor case. There is one in which the inner surface of the part plate is supported by the alligator.

  When the motor is driven, when power is supplied from the outside to the armature through the brush when the switch is turned on, the armature is driven to rotate around the axis, and the driving force is applied to the armature. It is output from the one end and used for some operation.

  On the other hand, the brush continues to slide against the armature and wears over time while the motor is being driven. Therefore, if the motor has been used for a long period of time or the performance of the motor has deteriorated, the motor is temporarily turned off. Maintenance and inspection work such as disassembling and checking the degree of wear of the brush or replacing a brush with high wear with a new one is required. Further, the motor can be reused by the subsequent assembly work of the motor.

JP-A-8-223848

  By the way, when disassembling the motor, first, the second end plate is not fixed to the opening edge of the second opening of the case body by caulking, and the opening edge of the second opening of the case body and the first opening are removed. The two end plates can be separated from each other, and then the first end plate is separated from the second end plate and the armature together with the case main body, and the inner surface of the second end plate is The brush is exposed to the outside of the motor case so that the brush can be visually recognized and operated. However, the armature and the case main body are strongly attracted to each other by the magnetic force of the magnet supported on the inner peripheral surface of the case main body. For this reason, when the case body is detached from the armature as described above, a large external force is required to counter the magnetic force. Therefore, the work of disassembling the motor tends to be complicated.

  On the other hand, when assembling the electric motor, first, the armature is accommodated in the case body, and then the second end plate is fixed by caulking to the opening edge of the second opening of the case body. Such a caulking operation is complicated. Therefore, the assembly work of the electric motor tends to be complicated.

  The present invention has been made paying attention to the above situation, and an object of the present invention is to provide a motor jig for facilitating the disassembly and assembly of the motor.

The invention of claim 1 is an electric jig 2 used for disassembling and assembling the electric motor 1,
The electric motor 1 includes a motor case 5 and an armature 7 supported on both ends of the motor case 5, and the motor case 5 is located on the same axis 6 as the armature 7 on the inner peripheral surface. A cylindrical case main body 13 that supports the magnet 12, and a first end plate 16 that closes the first opening 14 at one axial end of the case main body 13 and supports the armature 7 through one end; A second end plate 18 fixed by caulking to the opening edge of the other end of the case body 13 so as to close the second opening 17, and the second end plate 18 on the shaft 6. A boss 20 formed on the outer surface and supporting the other end of the armature 7;
The worktable 57 supported by the fixed member 56 is provided, the upper surface of the work table 57 forms a first insertion hole 59 crocodile, through the first end plate from one end of the armature 7 is I When the projecting end portion of the rotating shaft projecting outward is inserted directly or indirectly into the first insertion hole 59 (FIG. 5), the first end portion together with the case body 13 with respect to the armature 7 is provided. The electric motor 1 is supported on the work table 57 so that the plate 16 can be detached downward,
The upper surface of the work table 57 has a second insertion hole 65 through which the boss portion 20 is removably inserted in a state where the second end plate 18 is slidably mounted on the upper surface of the work table 57. The work table 57 is formed so that the boss portion 20 formed and inserted into the second insertion hole 65 can rotate around the axis 64 of the second insertion hole 65 together with the second end plate 18. The second end plate 18 can be fixed to the opening edge of the second opening 17 by caulking (FIG. 1). The caulking lever 71 is provided. It is the jig for electric motors characterized by these.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

The invention of claim 1 is a jig for an electric motor used for disassembling and assembling an electric motor,
The electric motor includes a motor case and an armature supported at both ends of the motor case, and the motor case is located on the same axis as the armature and has a cylindrical shape that supports a magnet on an inner peripheral surface. A case main body, a first end plate that closes the first opening at one end of the case main body in the axial direction, and passes through and supports one end of the armature, and a second opening at the other end of the case main body A second end plate fixed by caulking to the edge of the opening to be closed, and a boss portion formed on the outer surface of the second end plate on the axis and supporting the other end of the armature. With
The worktable is supported on the fixed member provided, projecting the bench top forms a first insertion hole crocodile, outwardly through the first end plate from I is one end of the armature When the projecting end of the rotating shaft is inserted directly or indirectly into the first insertion hole, the first end plate can be detached downward together with the case main body with respect to the armature. The electric motor is supported on the work table, and the following effects are produced.

  That is, when disassembling the electric motor having the above structure, first, the caulking of the second end plate with respect to the opening edge of the second opening of the case body is released, and the opening edge of the second opening of the case body and the above-mentioned The second end plate can be separated from each other.

  On the other hand, one end of the armature inserts a flange into the first insertion hole of the work table. In this case, the case main body and the armature of the motor case in the electric motor are strongly attracted to each other by the magnetic force of the magnet supported on the inner peripheral surface of the case main body. For this reason, the electric motor is supported by the work table at a position away from the upper surface of the work table on the axis of the first insertion hole.

  Next, the first end plate is separated downward together with the case body with respect to the second end plate and the armature while resisting the magnetic force. If the case main body and the first end plate are detached from the second end plate and the armature in this way, the inner surface of the second end plate is exposed to the outside of the motor case, and the motor The disassembly work ends.

  That is, when the motor is disassembled, one end of the armature supports the wing on the work table, so that the first end together with the case main body with respect to the second end plate and the armature in a stable and fixed state. The part plate can be detached. Therefore, the motor can be easily disassembled regardless of the presence of the magnetic force.

  Further, the upper surface of the work table forms a second insertion hole that allows the boss portion to be removably inserted in a state in which the second end plate is slidably mounted on the upper surface of the work table, The boss portion inserted into the second insertion hole is rotatable about the axis of the second insertion hole together with the second end plate, and is pivotally supported on the work table. A swaging lever that enables the second end plate to be fixed to the opening edge of the second opening by swiveling is provided, and the following effects are produced.

  That is, at the time of assembling the electric motor, first, the second end plate is placed on the upper surface of the work table, and the boss portion is inserted into the second insertion hole. Next, the second end plate and the case main body are integrally rotated around the axis of the second insertion hole, and the second end is formed in a circumferential direction around the axis of the second insertion hole. The caulking portion of the plate is made to coincide with the rotation locus position of the caulking lever. Then, if the caulking lever is rotated, the second end plate is fixed to the opening edge of the second opening of the case body by caulking of the caulking portion by the caulking lever, The assembly work of the electric motor is finished.

  That is, at the time of the assembly work of the electric motor, the second end plate is placed on the upper surface of the work table and the boss portion is inserted into the second insertion hole. When the second end plate is rotated to a predetermined position, and the caulking lever is simply rotated, the second end plate is fixed to the opening edge of the second opening by caulking. Can do. Therefore, the assembly work of the electric motor can be facilitated.

  Further, since the work table is shared for the above-described disassembly and assembly work of the electric motor, the work can be achieved at low cost by a motor jig having a simple structure.

It is side surface sectional drawing of an electric motor and the jig for electric motors, Comprising: It is a figure which shows the assembly operation of an electric motor. FIG. 2 is a plan sectional view of what is shown in FIG. 1. It is a fragmentary perspective view of what was shown in FIG. FIG. 2 is a developed perspective view of what is shown in FIG. 1. It is side surface fragmentary sectional drawing of an electric motor and the jig for electric motors, Comprising: It is a figure which shows the disassembly work of an electric motor. It is a figure equivalent to FIG. 2, and is a figure which shows the assembly operation of an electric motor.

  In order to achieve the object of providing a motor jig for facilitating disassembly and assembly work of the motor, the embodiment for carrying out the present invention is as follows. is there.

  That is, the electric motor jig is used for disassembling and assembling the electric motor. The electric motor includes a motor case and an armature that is supported at both ends of the motor case, and the motor case is located on the same axis as the armature and has a cylindrical shape that supports a magnet on an inner peripheral surface. A case main body, a first end plate that closes the first opening at one end of the case main body in the axial direction, and passes through and supports one end of the armature, and a second opening at the other end of the case main body A second end plate fixed by caulking to the edge of the opening to be closed, and a boss portion formed on the outer surface of the second end plate on the axis and supporting the other end of the armature. Is provided.

  A work table supported by the fixed member is provided. A first insertion hole is formed on the upper surface of the work table, and when one end of the armature is inserted into the first insertion hole, the first end plate is attached to the armature together with the case body. The electric motor is supported by the workbench so that it can be detached downward.

  A second insertion hole is formed on the upper surface of the work table so that the boss portion can be removably inserted in a state where the second end plate is slidably mounted on the upper surface of the work table. The boss portion inserted into the second insertion hole can rotate about the axis of the second insertion hole together with the second end plate. A caulking lever is provided that is pivotally supported on the work table and that allows the second end plate to be fixed to the opening edge of the second opening by caulking.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  1-4, the code | symbol 1 is an electric motor and this electric motor 1 is for the radiator fan drive mounted on a vehicle. Reference numeral 2 denotes a motor jig 2 used for disassembling and assembling the motor 1. The electric motor 1 may be for an air conditioning fan in a vehicle, or may be for electric power steering.

  The electric motor 1 is a sheet metal motor case 5 constituting the outer shell, and a rotor that is housed in the motor case 5 and supported on both ends of the motor case 5 on the same axis 6 as the motor case 5. A certain armature 7 is supported in the motor case 5 through the brush holder 8 in the motor case 5, and is in sliding contact with the outer peripheral surface of the armature 7 to power the armature 7 from the outside. And a brush 9 for supplying.

  The motor case 5 closes a cylindrical case main body 13 that is located on the shaft center 6 and supports the magnet 12 on the inner peripheral surface, and a first opening 14 at one end of the case main body 13 in the axial direction. The first end plate 16 that penetrates one end of the armature 7 and supports it through the first bearing 15 and the second opening 17 at the other end of the case body 13 are fixed to the opening edge by caulking. A second end plate 18 and a boss portion 20 formed on the outer surface of the second end plate 18 on the shaft 6 and supporting the other end of the armature 7 via a second bearing 19. A plurality of (three) brackets 21 projecting outward from the outer surface of the case body 13 and supporting the motor case 5 on the side of the vehicle body.

The case body 13 includes a cylindrical body 25 composed of inner and outer double cylinders positioned on the shaft center 6 and a circle in which the second opening 17 of the cylindrical body 25 is integrally formed at the edge of the opening. And an annular outward flange 26. The first end plate 16 includes a truncated cone cylinder 28 in which the first opening 14 of the inner cylinder of the cylindrical body 25 is integrally coupled to the opening edge of the flange, and the truncated cone. A small diameter of the cylindrical body 28 has an outward flange 29 formed integrally with the crocodile. In this example, the diameter of the first end plate 16 and the inner cylinder of the cylindrical body 25 are continuous. The magnet 12 is attached to the inner peripheral surface of the inner cylinder of the cylindrical body 25, and has an outward flange 26 at the lower end of the inner cylinder. The outer cylinder of the cylindrical body 25 is joined to the upper side of the inner cylinder at approximately half the height of the inner cylinder, and the bracket 21 protrudes outward from the lower end of the outer cylinder.

  The second end plate 18 is a circle formed integrally with an outer edge portion of the circular plate 31 so as to surround the circular plate 31 positioned on the axis 6 and the outward flange 26 of the case body 13. And an annular inward flange 32. A pair of cutouts are formed at a plurality (four) of circumferential positions around the axis 6 in the inward flange 32, and a portion between the cutouts is a caulking protrusion 33. Then, the outward flange 26 of the case body 13 is sandwiched between the outer edge portion of the circular plate 31 of the second end plate 18 and the crimped protrusions 33 that are crimped. The second end plate 18 is fixed to the opening edge of the second opening 17.

  In the illustrated example, the caulking protrusions 33 are arranged at equal intervals in the circumferential direction around the axis 6 of the inward flange 32, but may be arranged at unequal intervals.

  The boss portion 20 is formed by a portion of the second end plate 18 on the axis 6 being bulged outward. The boss portion 20 has a circular cross section, and the second bearing 19 is press-fitted into the boss portion 20.

  The armature 7 includes a rotating shaft 36 positioned on the shaft 6, an iron core 37 that is fitted and fixed to an intermediate portion in the axial direction of the rotating shaft 36, a coil 38 wound around the iron core 37, The boss portion 20 of the coil 38 has a commutator 39 that is externally fitted and fixed to a midway portion in the axial direction of the rotary shaft 36 so as to be adjacent to the arm. A male screw 40 is formed at a protruding end portion of each end portion of the rotating shaft 36 that protrudes outward from the first end plate 16. A radiator fan (not shown) is fixed to the projecting end of the rotating shaft 36 by the male screw 40.

  A pair of the brush holder 8 and the brush 9 is provided, and the inner surface of the second end plate 18 is supported on the side of each brush holder 8. Each brush 9 is accommodated in each brush holder 8 and is biased by a coil spring 43 so that one end thereof is slidably pressed against the outer peripheral surface of the commutator 39 of the armature 7.

  A communication hole 46 for communicating the inside and outside of the motor case 5 is formed at the lower end of the radially outer end of the motor case 5. The communication hole 46 is formed in a notch 47 formed in the lower end edge of the case body 13 of the motor case 5 and an outer edge of the second end plate 18 of the motor case 5 so as to correspond to the notch 47. It is formed by the other notch 48 formed.

  An outlet 49 is fixed to the edge of the other notch 48 in the case body 13, and a connection line 50 for electrically connecting the outlet 49 and the brush 9 is provided. A plug 51 is provided which is detachably fitted to the outlet 49 through the communication hole 46 and supplies external power to the armature 7 through the outlet 49, the connecting wire 50, and the brush 9. A resin cover body 53 capable of opening and closing the communication hole 46 is provided, and the plug 51 is integrally attached to the cover body 53. With the cover body 53 closing the communication hole 46, the plug 51 is fitted to the outlet 49, and the cover body 53 is tightly fitted to at least a part of the notches 47 and 48, respectively. Match. Further, a pair of locking hooks 54 are integrally projected on the cover body 53. When the cover body 53 closes the communication hole 46, the locking hooks 54 are locked to the inner edge of the notch 47 to hold the communication hole 46 closed.

  Although not shown, a bakelite plate or the like that is attached to the inner surface of the second end plate 18 and partitions the inner surface of the second end plate 18 from the brush holder 8, the outlet 49, and the connection line 50. Insulation is provided.

  A metallic rectangular parallelepiped work table 57 supported on the upper surface of the stationary member 56 such as a gantry is provided. A first insertion hole 59 having an axis 58 perpendicular to the upper surface of the work table 57 is formed.

  In FIG. 5, one end of the armature 7 extends outward from the arm on the axis 6 of the armature 7, and the base end of the armature 7 is the male screw of the rotating shaft 36. A guide shaft 62 detachably fastened to 40 is provided. The guide shaft 62 has the same diameter as the rotating shaft 36 or slightly smaller in diameter. An extended end portion of the guide shaft 62 from which one end portion of the armature 7 extends from the side can be fitted into and removed from the first fitting hole 59. Further, an annular rubber elastic body 63 positioned on the axis 58 is attached to the upper surface of the work table 57.

  Then, the caulking of each caulking protrusion 33 of the second end plate 18 to the case body 13 is released, and the opening edge of the second opening 17 of the case body 13 and the second end plate 18 are released. Can be separated from each other and the extended end portion of the guide shaft 62 fixed to the rotating shaft 36 of the armature 7 is inserted into the first insertion hole 59, the second end plate The first end plate 16 together with the case body 13 can be separated downward from the armature 7 and the armature 7. Further, when the case body 13 and the first end plate 16 are separated downward from the armature 7 by a predetermined dimension or more, the outward flange 29 of the first end plate 16 becomes the elastic body 63. It collides elastically and prevents further downward movement.

  1, 2, and 4, a second insertion hole 65 having an axis 64 that is perpendicular to the upper surface of the work table 57 is formed. The boss portion 20 is removably inserted into the second insertion hole 65 in a state where the second end plate 18 is slidably mounted on the upper surface of the work table 57. The boss portion 20 inserted into the second insertion hole 65 is rotatable about the axis 64 of the second insertion hole 65 together with the second end plate 18.

  In the above case, the axis 6 of the motor case 5 and the armature 7, the axis 58 of the first insertion hole 59, and the axis 64 of the second insertion hole 65 are located coaxially with each other. The inner diameter of the second insertion hole 65 is larger than that of the first insertion hole 59 and is connected to the upper end of the first insertion hole 59. The first insertion hole 59 and the second insertion hole 65 may have the same diameter. Further, the axial centers 58 and 64 of these 59 and 65 may be separated from each other in a direction orthogonal to these axial centers 58 and 64.

  A bracket 69 is fastened to the side surface of the work table 57 by a fastener 68, and a caulking lever 71 is pivotally supported by the bracket 69 via a pivot shaft 70 extending horizontally. The caulking lever 71 is fixed to the bracket 69 by a pivot shaft 70 so as to be pivotable up and down, and is fastened to the pivoting portion of the lever body 73 by a fastener 74 so that the position can be changed. And a spherical caulking portion 75. The bracket 69, the pivot shaft 70, and the caulking lever 71 are provided so as not to interfere with the motor case 5 on the work table 57. The work table 57 and the bracket 69 may be formed integrally with each other by making them made of resin or the like.

  As shown in FIG. 1, the second end plate 18 is placed on the upper surface of the work table 57, the boss portion 20 is inserted into the second insertion hole 65, and the second end plate 18 is The outward flange 26 of the case body 13 is placed on the upper surface (inner surface). In this state, if the second end plate 18 and the case body 13 are integrally rotated around the axis 64 of the second insertion hole 65, the axis 64 of the second insertion hole 65 is rotated. In the circumferential direction around, the caulking protrusion 33 of the second end plate 18 can be matched with the rotation locus position of the caulking portion 75 of the caulking lever 71.

  If the caulking lever 71 is rotated upward in a state where the caulking protrusion 33 is aligned with the rotation locus position of the caulking part 75, the caulking part 75 of the caulking lever 71 is moved to the caulking protrusion 33. Due to this pressure contact, the crimping protrusion 33 is crimped to be bent. By this caulking, the outward flange 26 of the case body 13 is sandwiched between the caulking protrusion 33 and the outer edge of the circular plate 31 of the second end plate 18, and the case body 13 The second end plate 18 can be fixed to the opening edge of the two openings 17. If the other crimping protrusions 33 are sequentially crimped in the same manner as described above, the fixing of the second end plate 18 to the opening edge of the second opening 17 of the case body 13 is completed.

  5, when disassembling the electric motor 1 having the above-described structure, first, the caulking by the caulking protrusion 33 of the second end plate 18 with respect to the opening edge of the second opening 17 of the case body 13 is used with pliers, nippers, or the like. To release. As a result, the opening edge of the second opening 17 of the case body 13 and the second end plate 18 can be separated from each other. In this case, the caulking protrusion 33 tends to be damaged, such as being broken with respect to the inward flange 32. If such damage occurs, the second end plate 18 can be discarded and replaced with a new one.

  On the other hand, the base end portion of the guide shaft 62 is fixed to the male screw 40 of the rotating shaft 36 whose one end portion of the armature 7 is a trap. Then, the extended end portion of the guide shaft 62 is inserted into the first insertion hole 59 of the work table 57. In this case, the case main body 13 and the armature 7 of the motor case 5 in the electric motor 1 are strongly attracted to each other by the magnetic force of the magnet 12 supported on the inner peripheral surface of the case main body 13. For this reason, the electric motor 1 is supported on the work table 57 via the guide shaft 62 at a position away from the upper surface of the work table 57 on the axis 58 of the first insertion hole 59.

  Next, the first end plate 16 together with the case body 13 is pressed against the second end plate 18 and the armature 7 by pressing each bracket 21 downward with a finger of the hand while resisting the magnetic force. Let go down. In this case, when the case main body 13 and the first end plate 16 are separated from the armature 7 to some extent, the magnetic force rapidly decreases. For this reason, the first end plate 16 detached from the armature 7 tends to vigorously collide with the work table 57, and this collision is performed with respect to the elastic body 63. Therefore, the impact force at the time of the collision is alleviated by the elastic body 63, and the first end plate 16 is prevented from being damaged. And if the case main body 13 and the 1st end plate 16 are made to detach | leave from the 2nd end plate 18 and the armature 7 as mentioned above, the inner surface of the said 2nd end plate 18 will be a brush holder 8, The brush 9 and the periphery of the connection line 50 are exposed to the outside of the motor case 5 so that they can be visually recognized and operated, and the disassembling work of the electric motor 1 is finished.

  In other words, when the motor 1 is disassembled, the armature 7 is supported by the work table 57 at one end of the armature 7, so that the case is secured to the second end plate 18 and the armature 7 in a stable and fixed state. The first end plate 16 can be detached together with the main body 13. Therefore, the disassembly work of the electric motor 1 can be easily performed regardless of the presence of the magnetic force.

  Next, by checking or operating the brush holder 8 or the brush 9 whose inner surface of the second end plate 18 in the disassembled electric motor 1 is visually checked or worn, Maintenance inspection work such as replacing the brush 9 having a larger diameter with a new one. When the brush 9 is replaced with a new one in this way, a combination of a new brush holder 8, brush 9, second end plate 18, second bearing 19, spring 43, outlet 49, and connecting wire 50 is separately provided. And the assembled body may be assembled to the case body 13 of the motor case 5.

  In FIG. 6, when the electric motor 1 is assembled in the case where the combination is assembled to the case body 13 of the motor case 5, first, the second end plate 18 of the combination is placed on the upper surface of the work table 57. At the same time, the boss 20 is inserted into the second insertion hole 65. Next, the two-pronged jig 78 is inserted between the brushes 9 and 9 inserted and supported in the brush holders 8 in the above-mentioned combination while resisting the urging force of the spring 43. Then, with the bifurcated jig 78, the brushes 9 are separated from each other by a diameter larger than the diameter of the commutator 39 of the armature 7.

  Next, although not shown, the end of the rotary shaft 36 of the armature 7 is fitted into the second bearing 19 in the boss portion 20 through the intermediate space of the bifurcated jig 78, and the brushes 9, 9, the commutator 39 of the armature 7 is inserted. In this state, the bifurcated jig 78 is extracted from between the brushes 9 and 9. Then, the brushes 9 are pressed against the outer peripheral surface of the commutator 39 by the bias of the spring 43.

  Next, as shown in FIGS. 1 to 3, the outward flange 26 of the case body 13 is placed on the upper surface of the second end plate 18 of the combined body placed on the upper surface of the work table 57. Next, the communication hole 46 is formed by matching the notch 47 of the case body 13 with the other notch 48 of the second end plate 18. Next, the cover body 53 is fitted into the communication hole 46 to close the communication hole 46 and the plug 51 is fitted to the outlet 49 of the combination. Then, the case body 13 is accurately positioned at a predetermined position around the axis 6 of the second end plate 18.

  Next, on the work table 57, the second end plate 18 and the case main body 13 are integrally rotated around the axis 64 of the second insertion hole 65, and the shaft of the second insertion hole 65 is rotated. In the circumferential direction around the center 64, the caulking protrusion 33, which is the caulking portion of the second end plate 18, is made to coincide with the rotational trajectory position of the caulking portion 75 of the caulking lever 71. Then, when the caulking lever 71 is rotated upward, the caulking portion 75 of the caulking lever 71 is pressed against the caulking protrusion 33 and the caulking protrusion 33 is caulked, and by this caulking, the case body The second end plate 18 is fixed to the opening edge portion of the 13 second opening 17. Other caulking protrusions 33 may be caulked one after another in the same manner as described above. Thereby, the assembly work of the electric motor 1 is completed.

  In the caulking work of the caulking protrusion 33 on the work table 57 described above, the second end plate 18, the case main body 13, and the cover body 53 are integrally formed around the axis 64 of the second insertion hole 65. When the caulking protrusion 33 is caused to coincide with the position of the caulking portion 75 of the caulking lever 71, or when the caulking lever 71 is rotated to caulk the caulking protrusion 33. In addition, when the cover body 53 gets in the way, the cover body 53 may be temporarily detached from the communication hole 46.

  That is, during the assembly work of the electric motor 1, the second end plate 18 is placed on the upper surface of the work table 57 and the boss portion 20 is fitted into the second fitting hole 65. When the second end plate 18 is rotated to a predetermined position around the axis 64 of the second end plate 18 and the caulking lever 71 is simply rotated, the second end plate 18 is rotated with respect to the opening edge of the second opening 17. The two end plates 18 can be fixed by caulking. Therefore, the assembly work of the electric motor 1 can be facilitated.

  Further, since the work table 57 is shared by the above-described disassembly and assembly work of the electric motor 1, the work can be achieved at low cost by the electric jig 2 having a simple configuration.

  In addition, when the one end part of the rotating shaft 36 of the armature 7 has a length that greatly protrudes from the motor case 5, the guide shaft 62 may not be provided.

DESCRIPTION OF SYMBOLS 1 Motor 2 Jig for motors 5 Motor case 6 Axle 7 Armature 8 Brush holder 9 Brush 12 Magnet 13 Case body 14 First opening 15 First bearing 16 First end plate 17 Second opening 18 Second end plate 19 Second bearing 20 Boss portion 25 Cylindrical body 26 Outward flange 28 Frustum cylinder 29 Outward flange 31 Circular plate 32 Inward flange 33 Caulking protrusion 43 Spring 46 Communication hole 47 Notch 48 Other notch 49 Outlet 50 Connection line 51 Plug 53 Cover body 56 Fixed side member 57 Work table 58 Axis center 59 First insertion hole 62 Guide shaft 63 Elastic body 64 Axis center 65 Second insertion hole 71 Caulking lever 78 Bifurcated jig

Claims (1)

A motor jig used for disassembling and assembling electric motors,
The electric motor includes a motor case and an armature supported at both ends of the motor case, and the motor case is located on the same axis as the armature and has a cylindrical shape that supports a magnet on an inner peripheral surface. A case main body, a first end plate that closes the first opening at one end of the case main body in the axial direction, and passes through and supports one end of the armature, and a second opening at the other end of the case main body A second end plate fixed by caulking to the edge of the opening to be closed, and a boss portion formed on the outer surface of the second end plate on the axis and supporting the other end of the armature. With
The worktable is supported on the fixed member provided, projecting the bench top forms a first insertion hole crocodile, outwardly through the first end plate from I is one end of the armature When the projecting end of the rotating shaft is inserted directly or indirectly into the first insertion hole, the first end plate can be detached downward together with the case main body with respect to the armature. Make sure the electric motor is supported by the above workbench,
A second insertion hole is formed on the upper surface of the work table so that the boss portion can be removably inserted with the second end plate slidably mounted on the upper surface of the work table. The boss portion inserted into the two insertion holes is rotatable about the axis of the second insertion hole together with the second end plate, and is pivotally supported by the work table. A jig for an electric motor, comprising a caulking lever that enables the second end plate to be fixed by caulking to an opening edge of the second opening by movement.

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