JP4503374B2 - Electric motor with built-in capacitor - Google Patents

Description

  The present invention relates to an electric motor, and more particularly to an electric motor with a built-in capacitor that is employed as a drive source for various electric appliances such as a ventilation fan.

  Conventionally, this type of electric motor with a built-in capacitor is disclosed in Patent Document 1 below. As shown in FIG. 21, the electric motor includes an annular terminal block 101 and an annular capacitor 102 which is a capacitor for operation. Here, the annular terminal block 101 is coaxially assembled to each stator winding 104a of the stator 104 fitted coaxially in the cylindrical housing 103 of the electric motor at the end opposite to the load. . The annular capacitor 102 is coaxially assembled to the terminal block 101 from the side opposite to the load.

JP 2002-10591 A

  Incidentally, in recent years, there has been a strong demand for space saving for electrical products that employ a motor with a built-in capacitor as a drive source. In connection with this, space saving is inevitably required for the motor itself configured as described above. In particular, since the electric motor with a built-in capacitor is an electric motor with a relatively small output, the outer dimension of the electric motor is also small. Therefore, the actual situation is that the space saving for such an electric motor is a very strict request.

  However, in the electric motor configured as described above, the annular capacitor 102 has its anti-load on the anti-load side end of each stator winding 104 a of the stator 104 in the anti-load side space of the housing 103. Projects to the side. For this reason, the axial length of the housing 103 is necessarily increased by at least the axial thickness of the annular capacitor 102. This causes a problem that the above-mentioned request for space saving cannot be sufficiently satisfied. This is the same even if the terminal block 101 is abolished and the annular capacitor 102 is directly assembled to the opposite end of each stator winding 104a.

  Further, when the rotor 105 is assembled into the housing 103 via the stator core 104b of the stator 104, the annular terminal block 101 and the annular capacitor 102 are usually connected to the anti-load side of each stator winding 104a as described above. After being coaxially assembled to the end, the rotor 105 is inserted through the hollow portions of the capacitor 102 and the terminal block 101 and into the hollow portion of the stator core 104b.

  For this reason, the inner diameter of the hollow portion of the terminal block 101 must be larger than the outer diameter of the rotor iron core 105a of the rotor 105. Therefore, there is a problem that the formation range of the wiring layer on the terminal block 101 cannot be widened. In addition, if an attempt is made to widen the formation range of such a wiring layer, the outer diameter of the terminal block 101 increases and the outer diameter of the housing 103 increases.

  On the other hand, the present inventors once again examined in detail the shape of the electric motor with a built-in capacitor, and although the electric motor is small as described above, the rotor rotates, so the housing and the stator Has a symmetrical shape around the rotation axis of the rotor so as to be suitable for rotation of the rotor.

  In addition, each stator winding protrudes from the stator iron core into a space on the side opposite to the stator iron core of the housing, so that each stator winding in the space on the side opposite to the stator iron core of the housing. An annular dead space is inevitably formed between the outer peripheral portion and the inner peripheral wall of the housing.

  Therefore, the present invention pays attention to the above, and an annular dead space that is inevitably formed between the stator windings and the inner peripheral wall of the housing in the cylindrical housing. An object of the present invention is to provide an electric motor with a built-in capacitor in which the outer shape of the housing is made as small as possible by utilizing the space for accommodating the annular capacitor.

  Further, the present invention provides a terminal block for connecting the operating capacitor and each stator winding to an external circuit when the motor is completed by combining a pair of housing members after the rotor is mounted. And a terminal block having an elastic terminal made of a plate-like conductive material in which an engagement portion is formed at a corresponding portion of the capacitor terminal and a pin terminal that is electrically connected by tying each of the capacitor windings and the stator windings. It is an object of the present invention to provide an electric motor with a built-in capacitor which is configured to be electrically connected by being combined with each other and mounted coaxially in the non-load side housing.

In order to achieve the above object, a motor with a built-in capacitor according to the present invention includes a pair of cylindrical housings and a plurality of radial housings that are fitted on the inner peripheral wall of the housing and spaced radially along the circumferential direction of the stator core. A stator having a stator winding wound around an insulating bobbin with respect to the teeth of the rotor, a rotor rotatably supported between the central portions of both axial side walls of the pair of housings, An annular capacitor for operating the motor coaxially disposed in an annular dead space formed between the outer peripheral portion of the stator winding and the outer peripheral side rising portion of the insulating bobbin and the inner peripheral wall of the housing; A pin terminal extending from the outer peripheral side rising part or the inner peripheral side rising part toward the anti-stator iron core and electrically connecting the winding terminal wire of the stator winding, and a capacitor terminal as an electrode of the annular capacitor And Den Made from the terminal block and having an elastic terminal comprising a plate-shaped conductive material having an engagement portion for connecting said elastic terminal, said the surface of the terminal block the stator side of the pin terminal and capacitor terminal The pin portion and the capacitor terminal can be engaged with and disengaged from the corresponding engagement portion provided on the terminal block against its elasticity. It is set as the structure engaged.

  By this means, it is possible to effectively use the space in the housing of the electric motor with a built-in capacitor for operation, and it is possible to reduce the outer shape and reduce the axial dimension. And the electric motor with a built-in capacitor which can facilitate electrical connection between the terminal terminal and the pin terminal having the capacitor terminal and the stator windings is obtained.

In order to achieve the above object, the motor with a built-in capacitor according to the present invention is configured such that the stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block holds the bearing of the housing at the center thereof. than the outer diameter of the rotor iron core slightly in diameter than the outer diameter of the parts have a small diameter hole, coaxially it will be mounted and fixed on the anti-load side of the stator winding, the annular capacitor counter the inner peripheral wall of the housing of the load side, the terminal block of the load side is attached and fixed, the combination after mounting the rotor and the housing of the counter-load-side load side was fitted to the housing and the stator of by is obtained by a configuration in which the electrical connection between the capacitor terminals and the terminal block of resilient terminals.

  By this means, it is possible to effectively use the space in the housing of the electric motor with a built-in capacitor for operation, and it is possible to reduce the outer shape and reduce the axial dimension. Then, the annular capacitor can be attached to the inner peripheral wall of the housing in a separate process, and a capacitor built-in type electric motor capable of shortening the working time can be obtained.

In order to achieve the above object, the motor with a built-in capacitor according to the present invention is configured such that the stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block holds the bearing of the housing at the center thereof. part possess a smaller diameter hole than the outer diameter of the rotor iron core slightly in diameter than the outer diameter of, coaxially mounted fixed with anti stator iron core side in the peripheral wall of the housing of the anti-load side, the annular capacitor is mounted fixed to the stator winding the outer periphery of the anti-load side of the stator windings, after mounting the rotor and the housing of the counter-load-side load side was fitted to the housing and the stator of it is obtained by a configuration in which the assembly of the electric motor can be electrically connected between the pin terminals and the capacitor terminals of the insulating bobbin and the terminal block of the elastic terminal by combining.

  By this means, it is possible to effectively use the space in the housing of the motor with a built-in annular capacitor for operation, and the range of formation of the wiring layer of the terminal block can be expanded, so that the outer shape can be downsized and the axial dimension can be reduced. A motor with a built-in capacitor can be obtained.

In order to achieve the above object, the motor with a built-in capacitor according to the present invention is configured such that the stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block holds the bearing of the housing at the center thereof. part have a smaller diameter hole than the outer diameter of the rotor iron core slightly in diameter than the outer diameter of the mounting the annular capacitor and terminal block while being electrically connected with each inner peripheral wall of the anti-load side housing The electric motor is assembled by combining the anti-load side housing and the load side housing fitted with the stator after mounting the rotor.

  By this means, it is possible to effectively use the space in the housing of the electric motor with the built-in capacitor for operation, and the range of formation of the wiring layer of the terminal block can be expanded, so that the outer shape can be downsized and the axial dimension can be reduced. A motor with a built-in capacitor is obtained.

In order to achieve the above object, the motor with a built-in capacitor according to the present invention is configured such that the stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block holds the bearing of the housing at the center thereof. have a smaller diameter hole than the outer diameter of the rotor iron core slightly in diameter than the outer diameter of the part, the anti-load side of the stator winding together with the annular capacitor and terminal block is electrically connected in each Load side that is fixedly mounted and also electrically connected to the pin terminal that is electrically connected with the winding terminal wire, and after mounting the rotor, this annular capacitor and the stator with the terminal block are fitted a housing, in which a structure for performing assembling the electric motor by combining the anti-load side housing.

  By this means, it is possible to effectively use the space in the housing of the electric motor incorporating the driving capacitor, and it is possible to reduce the outer shape and reduce the axial dimension. Assembling and electrical connection of the annular capacitor and the terminal block are possible in separate processes, and a capacitor built-in type motor capable of shortening the working time can be obtained.

  In order to achieve the above object, the electric motor with a built-in capacitor according to the present invention has a hook portion formed so that the engaging portion of the conductive elastic terminal of the terminal block is recessed from the load side to the anti-load side. In addition, the pin terminal and the capacitor terminal provided on the bobbin are configured to engage and disengage with each other in the corresponding conductive elastic terminal portions at their tip portions against the elasticity. .

  By this means, it becomes possible to effectively use the space in the housing of the motor with a built-in capacitor for operation, and it is possible to reduce the outer shape and reduce the axial dimension, and the terminal block, pin terminal and capacitor terminal with a small fitting force An electric motor with a built-in capacitor that can be electrically connected to the motor is obtained.

  In order to achieve the above object, the electric motor with a built-in capacitor according to the present invention is configured such that the conductive elastic terminal engaging portion of the terminal block is directed toward the load side at a portion corresponding to the pin terminal provided on the capacitor terminal and the bobbin. It is a plate-like part having each fitting hole formed so as to open, and the pin terminal and the capacitor terminal provided on the bobbin are engaged and disengaged in the fitting hole part of the corresponding plate-like part at the tip part. It is configured to be inserted through and engageable.

  By this means, it is possible to effectively use the space in the housing of the motor with a built-in capacitor for operation, and it is possible to reduce the outer shape and reduce the axial dimension, and the connection structure between the terminal block and the pin terminal and capacitor terminal An electric motor with a built-in capacitor can be obtained.

  According to the present invention, it is possible to effectively use the annular dead space formed between the outer peripheral portion of each stator winding and the inner peripheral wall of the housing, and the outer diameter shape can be reduced and the axial direction can be reduced. An electric motor with a built-in capacitor can be provided.

  Further, according to the present invention, it is possible to effectively use the annular dead space formed between the outer peripheral portion of each stator winding and the inner peripheral wall of the housing, and the outer diameter shape can be reduced and the axial direction can be reduced. Accordingly, it is possible to provide an electric motor with a built-in capacitor that has an effect of facilitating electrical connection between the terminal block and the pin terminal including the capacitor terminal and the stator winding.

  Further, according to the present invention, it is possible to effectively use the annular dead space formed between the outer peripheral portion of each stator winding and the inner peripheral wall of the housing, and the outer diameter shape can be reduced and the axial direction can be reduced. Thus, there can be provided an electric motor with a built-in capacitor, which has an effect that can be achieved, and can be attached to the inner wall of the housing of the driving capacitor in a separate process, thereby reducing the working time.

  Further, according to the present invention, it is possible to effectively use the annular dead space formed between the outer peripheral portion of each stator winding and the inner peripheral wall of the housing, and the outer diameter shape can be reduced and the axial direction can be reduced. Since the terminal block is mounted on the housing, the hole provided in the central portion of the terminal block can be minimized, and the capacitor built-in type electric motor can be provided.

  Further, according to the present invention, it is possible to effectively use the annular dead space formed between the outer peripheral portion of each stator winding and the inner peripheral wall of the housing, and the outer diameter shape can be reduced and the axial direction can be reduced. Since the terminal block is mounted on the housing, the hole provided in the center of the terminal block can be minimized, the space for the terminal block can be expanded, and the combination of the capacitor for operation and the terminal block and this capacitor It is possible to provide an electric motor with a built-in capacitor, which can be attached to the inner wall of the housing of the terminal block in a separate process and can reduce the working time.

  Further, according to the present invention, it is possible to effectively use the annular dead space formed between the outer peripheral portion of each stator winding and the inner peripheral wall of the housing, and the outer diameter shape can be reduced and the axial direction can be reduced. An electric motor with a built-in capacitor that has the effect that it is possible, and that the combination of the capacitor for operation and the terminal block and the mounting of the capacitor and the terminal block to the stator can be performed in separate processes, and the working time can be shortened Can provide.

  In addition, according to the present invention, there is provided an electric motor with a built-in capacitor that has an effect of facilitating electrical connection between a terminal block and a pin terminal that is wound with a capacitor terminal and a winding terminal line of a stator winding. it can.

  In addition, according to the present invention, a capacitor built-in capacitor type that has an effect of facilitating electrical connection between a terminal block and a pin terminal having a capacitor terminal and a stator winding and that can simplify the structure of the electrical connection portion. An electric motor can be provided.

1 is a longitudinal sectional view showing a capacitor motor according to first and fourth embodiments of the present invention. The longitudinal cross-sectional view supposing the cylindrical housing of the non-load side of the capacitor | condenser motor of Embodiments 1-4 Longitudinal sectional view of capacitor motor stator of Embodiments 1, 5 and 6 Enlarged perspective view of the capacitor for operation of the capacitor motor of the first embodiment Plan view of the terminal block of the capacitor motor of the first embodiment The expanded sectional view which shows the elastic terminal part of the terminal block of the capacitor | condenser motor of Embodiment 1, 5 The longitudinal cross-sectional view which shows the state which fitted the stator coaxially after attaching a rotor to the cylindrical housing of the capacitor | condenser motor of Embodiment 1 Sectional drawing which shows the state which mounted | wore the cylindrical capacitor | condenser coaxially with the cylindrical housing inner surface by the side of the non-load side of the capacitor | condenser motor of Embodiment 1 The expanded sectional view which shows the fitting state of the pin terminal of the insulation bobbin of the capacitor | condenser motor of Embodiment 1, 5 and the elastic terminal of a terminal block Enlarged perspective view showing an annular capacitor of the capacitor motor of Embodiments 2 and 6 Plan view of the terminal block of the capacitor motor of Embodiments 2 and 3 Sectional drawing which shows the fitting state of the capacitor | condenser terminal of the cyclic | annular capacitor | condenser of the capacitor | condenser motor of Embodiment 2, 3, 5 and the elastic terminal of a terminal block Vertical sectional view of the capacitor motor of the second, third, and fourth embodiments Vertical sectional view of the capacitor motor stator of the second embodiment Sectional drawing which shows the state which attached the terminal block coaxially to the cylindrical housing inner surface by the side of the non-load side of the capacitor | condenser motor of Embodiment 2 Sectional drawing which shows the state which mounted | wore the cylindrical capacitor | condenser and the terminal block coaxially with the cylindrical housing inner surface by the side of the capacitor | condenser motor of Embodiment 3, 4 of the same Sectional drawing which shows the state which assembled the annular capacitor and terminal block of the capacitor | condenser motor of Embodiment 3 The expanded sectional view which shows the fitting state of the pin terminal of the insulation bobbin of the capacitor | condenser motor of Embodiment 6, and the elastic terminal of a terminal block The expanded sectional view which shows the elastic terminal part of the terminal block of the capacitor | condenser motor of Embodiment 6 Plan view of terminal block of capacitor motor of embodiment 6 Sectional view of a conventional motor with built-in capacitor

The present invention relates to a pair of cylindrical housings and a plurality of tooth portions that are fitted on the inner peripheral wall of the housing and radially provided at intervals along the circumferential direction of the stator core, and are wound via insulating bobbins. A stator having a fixed stator winding, a rotor rotatably supported between central portions of both axial side walls of the pair of housings, an outer peripheral portion of the stator winding, and an insulating bobbin An annular capacitor for operation disposed coaxially in an annular dead space formed between the outer peripheral side rising portion and the inner peripheral wall of the housing, and the outer peripheral side rising portion or the inner peripheral side rising portion of the insulating bobbin A plate terminal having a pin terminal extending in the direction from the stator core to the anti-stator core and electrically connected with a winding terminal wire of the stator winding, and an engaging portion electrically connected to the capacitor terminal as an electrode of the annular capacitor Bullet made of conductive material Consists of a terminal block having a terminal, the surface of the stator side of the terminal block, it forms the engagement portion so as to face the respective corresponding portions of the pin terminals and the capacitor terminals, the pin terminal And the capacitor terminal are configured to be detachably engaged with the corresponding engaging portions provided on the terminal block against the elasticity thereof, and the outer peripheral portion of each stator winding and the housing It is possible to effectively use the annular dead space formed between the inner peripheral wall and the terminal block having the capacitor terminal and the stator winding and the terminal block to facilitate electrical connection. Have.

The stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block has a diameter slightly larger than the outer diameter of the bearing holding portion of the housing at the center thereof, and is external to the rotor core. It has a smaller diameter hole than the diameter, the coaxially mounted fixed on the anti-load side of the stator winding becomes in the inner peripheral wall of the housing of the annular capacitor anti-load side, the terminal block of the load to be attached and fixed, the electrical connection between the anti-load side of the housing and the capacitor terminals and the terminal block of the elastic terminal by the said housing fitted with load-side stator combining after mounting the rotor It is possible to effectively use the annular dead space formed between the outer peripheral part of each stator winding and the inner peripheral wall of the housing, and the capacitor for operation can be mounted on the inner wall of the housing. Work in a separate process It has the effect of say.

The stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block has a diameter slightly larger than the outer diameter of the bearing holding portion of the housing at the center thereof, and is external to the rotor core. have a smaller diameter hole than the diameter, coaxially mounted fixed with anti stator iron core side in a peripheral wall of the housing of the anti-load side, the annular capacitor stator winding of the anti-load side of the stator winding An elastic terminal of the terminal block and a pin of the insulating bobbin are mounted and fixed on the outer periphery of the wire, and the housing on the antiload side and the housing on the load side fitted with the stator are combined after mounting the rotor. The electric motor can be assembled with the terminals and capacitor terminals, and the effective use of the annular dead space formed between the outer peripheral part of each stator winding and the inner peripheral wall of the housing Yes, in the middle of the terminal block Such an action can be minimized holes provided in.

The stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block has a diameter slightly larger than the outer diameter of the bearing holding portion of the housing at the center thereof, and is external to the rotor core. have a smaller diameter hole than the diameter, the annular capacitor and the terminal block will be mounted and fixed to the inner peripheral wall of the counter-load-side housing while being electrically connected with each fitting the stator and the anti-load side housing It is obtained by a configuration in which an electric motor is assembled and the load-side housing was charged in combination after mounting the rotor, the annular dead space formed between the outer peripheral portion and the inner peripheral wall of the housing of the stator winding Effective use is possible, and the operation capacitor and the terminal block can be assembled in separate processes, and the hole provided in the central portion of the terminal block can be minimized.

The stator is fitted on the inner peripheral wall of the housing on the load side, and the terminal block has a diameter slightly larger than the outer diameter of the bearing holding portion of the housing at the center thereof, and is external to the rotor core. have a smaller diameter hole than the diameter, the annular capacitor and terminal block are each in the mounted fixed on the anti-load side of the stator winding with the electrical connection, and the electrical connection tying the winding terminal line The motor is assembled by combining the load-side housing fitted with the annular capacitor and the stator with the terminal block, and the anti-load-side housing after the rotor is mounted and the pin terminal is electrically connected. It is possible to effectively use the annular dead space formed between the outer peripheral part of each stator winding and the inner peripheral wall of the housing, and the combination of the operating capacitor and terminal block and This capacitor and terminal It has the effect that the mounting is possible in a separate step to the stator.

The engaging portion of the conductive elastic terminal of the terminal block is a hook portion formed so as to be concave from the load side to the anti-load side, and the pin terminal and the capacitor terminal provided on the bobbin In each of the above-mentioned corresponding elastic elastic terminal portions, the engagement is detachably engaged against the elasticity, and a pin terminal and a terminal block with a capacitor terminal and a stator winding are entangled. An electrical connection is mechanically possible.

  Further, the terminal block has each hole portion formed so as to open toward the load side in a corresponding portion with respect to each elastic connection terminal in the base body, and the engaging portion of the conductive elastic terminal is: It is a metal plate-like portion that extends in the radial direction in each hole portion of the base body and forms a through-hole portion in the plate thickness direction of the base body, and a pin terminal and a capacitor terminal provided on the bobbin Is inserted into and engaged with the through-hole portion of each corresponding plate-like portion at its tip portion so as to be detachable, and has the effect that the structure of the electrical connection portion can be simplified.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 and 2, the electric motor includes a pair of cylindrical housings 1, a stator 2, and a rotor 3, and the stator 2 fitted coaxially in the housing 1 is a stator core. 4 has a stator winding 5 wound around a plurality of teeth provided radially at intervals along the circumferential direction, and an outer peripheral portion of the stator winding 5 and an inner peripheral wall of the housing 1 An annular capacitor 7 for operation is provided coaxially with an annular dead space 6 formed therebetween.

  In the above configuration, when an operating capacitor is incorporated and disposed in the axial space 8 of the stator winding 5, the axial dimension needs to be further increased. By mounting and arranging the annular capacitor 7 for operation coaxially in the annular dead space 6 that is inevitably formed with the inner peripheral wall of the housing 1, the space can be used effectively and the axial dimension of the motor can be reduced. Will be able to.

  Moreover, as shown in FIGS. 1-6, the said electric motor was provided radially at intervals along the circumferential direction of the stator core 4 fitted coaxially on the inner peripheral walls of the pair of cylindrical housings 1. A stator 2 having a stator winding 5 wound around an insulating bobbin 9 with respect to a plurality of tooth portions and a central portion of both axial side walls of the pair of housings 1 are rotatably supported. And an annular capacitor 7 for operation formed between the outer peripheral portion of the stator winding 5 and the outer diameter side rising portion 9-1 of the insulating bobbin 9 and the inner peripheral wall of the housing 1. It is coaxially arranged in the annular dead space 6 and is built in the housing 1, and from the outer diameter side rising part 9-1 or the inner diameter side rising part 9-2 of the insulating bobbin 9 toward the anti-stator core. Pin terminal 1 in which the winding terminal wire 5-1 of the extension stator winding 5 is connected and electrically connected And a terminal block 11 having an elastic terminal 12 made of a plate-like conductive material having an engaging portion for electrical connection with the capacitor terminal 7-1 as an electrode of the annular capacitor 7 for operation. The conductive elastic terminal 12 of the terminal block 11 is provided with an engaging portion so as to oppose the corresponding portions of the pin terminal 10 and the capacitor terminal 7-1. They are electrically coupled by a conductive plate 12-1 made of a conductive material.

  In the above configuration, the annular capacitor 7 for operation is coaxially mounted and disposed in the annular dead space 6 inevitably formed by the outer peripheral portion of the stator winding 5 and the inner peripheral wall of the housing 1. As a result, compared to the case where the annular capacitor 7 for operation is disposed in the axial space 8 of the stator winding 5, the space in the housing can be effectively used. Then, as shown in FIG. 9, the electrical connection between the pin terminal 10 and the capacitor terminal 7-1 and the terminal block 11 can be performed only by mechanical assembling work and without work such as soldering or welding.

  Further, as shown in FIGS. 1 to 9, in addition to the above-described configuration, the annular capacitor 7 for operation is mounted and fixed on the inner peripheral wall of the anti-load side housing 1a, and the bearing holding portion of the housing 1 is provided at the center portion thereof. A terminal block 11 provided with a hole 11-1 having a diameter slightly larger than the outer diameter and smaller than the outer diameter of the rotor core is coaxially mounted and fixed to the opposite side of the stator winding 5.

  In the above-described configuration, the load obtained by fitting and fixing the anti-load side housing 1a in which the annular capacitor 7 is mounted on the inner peripheral wall and the stator 2 in which the terminal block 11 is mounted on the stator winding 5 after the rotor 3 is mounted. By combining the side housing 1b, the assembly of the motor and the capacitor terminal 7-1 of the annular capacitor 7 and the pin terminal 10 of the insulating bobbin 9 and the terminal block 11 can be electrically connected at the same time. The mounting operation to the inner peripheral wall of the non-load-side housing 1a and the fitting and assembling work of the stator 2 to the load-side housing 1b can be performed in separate steps, and the working time can be shortened.

(Embodiment 2)
As shown in FIGS. 2 and 10 to 13, the electric motor is coaxially fitted to the inner peripheral walls of a pair of cylindrical housings 1 and provided radially at intervals along the circumferential direction of the stator core 4. A stator 2 having a stator winding 5 wound around an insulating bobbin 9 with respect to a plurality of tooth portions and a central portion of both axial side walls of the pair of housings 1 are rotatably supported. And an annular capacitor 7 for operation formed between the outer peripheral portion of the stator winding 5 and the outer diameter side rising portion 9-1 of the insulating bobbin 9 and the inner peripheral wall of the housing. It is coaxially arranged in the dead space 6 and is built in the housing 1 and extends from the outer diameter side rising part 9-1 or the inner diameter side rising part 9-2 of the insulating bobbin 9 toward the anti-stator core. Pin end that is electrically connected by winding the winding terminal wire 5-1 of the lead stator winding 5 10 and a terminal block 11 having an elastic terminal 12 made of a plate-like conductive material having an engaging portion for electrical connection with a capacitor terminal 7-1 as an electrode of the annular capacitor 7 for operation. The conductive elastic terminal 12 of the terminal block 11 is provided with an engaging portion so as to oppose the corresponding portions of the pin terminal 10 and the capacitor terminal 7-1. They are electrically coupled by a conductive plate 12-1 made of a conductive material. As shown in FIGS. 14 and 15, the driving annular capacitor 7 is coaxially mounted and fixed on the outer periphery of the stator winding 5 on the non-load side, and the bearing holding portion of the housing 1 is fixed at the center thereof. A terminal block 11 provided with a hole 11-1 having a diameter slightly larger than the outer diameter and smaller than the outer diameter of the rotor core is coaxially mounted and fixed to the inner peripheral wall of the non-load-side housing 1a.

  In the above configuration, the annular capacitor 7 for operation is coaxially mounted and disposed in the annular dead space 6 inevitably formed by the outer peripheral portion of the stator winding 5 and the inner peripheral wall of the housing 1. Thus, the space in the housing 1 can be used effectively, and compared with the case where the annular capacitor 7 for operation is arranged in the axial space 8 of the stator winding 5, it can be used effectively and the axial dimension of the motor is reduced. Will be able to. Since the terminal block 11 is mounted on the housing, it is not necessary to insert the iron core portion of the rotor 3, and the hole provided in the center portion can be minimized, the space of the terminal block 11 can be expanded, and various motor protection devices and connector parts Thus, electrical connection between the pin terminal 10 and the capacitor terminal 7-1 and the terminal block 11 can be performed only by mechanical assembling work and without work such as soldering or welding. The mounting operation of the terminal block 11 on the inner peripheral wall of the non-load-side housing 1a and the mounting operation of the annular capacitor 7 on the stator 2 fitted and assembled to the load-side housing 1b of the stator 2 are performed in separate steps. It is possible and the working time can be shortened.

(Embodiment 3)
As shown in FIGS. 2, 11, 13, and 16 to 17, the electric motor is coaxially fitted to the inner peripheral walls of the pair of cylindrical housings 1 and spaced along the circumferential direction of the stator core 4. Between the stator 2 having the stator winding 5 wound around the plurality of teeth provided radially via the insulating bobbin 9 and the central portions of the two axial side walls of the pair of housings 1. A rotor 3 that is rotatably supported, and an annular capacitor 7 for operation includes an outer peripheral portion of the stator winding 5, an outer diameter side rising portion 9-1 of the insulating bobbin 9, and an inner peripheral wall of the housing. It is coaxially arranged in the annular dead space 6 formed between the two and is housed in the housing 1, and is anti-fixed from the outer diameter side rising portion 9-1 or the inner diameter side rising portion 9-2 of the insulating bobbin 9. Electricity is generated by winding the winding terminal wire 5-1 of the stator winding 5 extending in the direction of the core of the stator. Terminal block provided with elastic terminal 12 made of a plate-like conductive material having an engaging portion for electrical connection with connected pin terminal 10 and capacitor terminal 7-1 as an electrode of annular capacitor 7 for operation 11, the conductive elastic terminal 12 of the terminal block 11 is provided with an engaging portion so as to face the corresponding portions of the pin terminal 10 and the capacitor terminal 7-1, and the space between the elastic terminals 12 is necessary. Accordingly, they are electrically coupled by a conductive plate 12-1 made of a plate-like conductive material. And the annular capacitor | condenser 7 for operation, and the terminal block 11 which provided the hole 11-1 with a diameter slightly larger than the outer diameter of the bearing holding part of the said housing 1 and smaller than the outer diameter of a rotor iron core in the center part. It is coaxially mounted and fixed on the inner peripheral wall of the non-load side housing 1a.

  In the above configuration, the annular capacitor 7 for operation is coaxially mounted and disposed in the annular dead space 6 inevitably formed by the outer peripheral portion of the stator winding 5 and the inner peripheral wall of the housing 1. Thus, the space in the housing 1 can be used effectively, and compared with the case where the annular capacitor 7 for operation is arranged in the axial space 8 of the stator winding 5, it can be used effectively and the axial dimension of the motor is reduced. Will be able to. Since the terminal block 11 is mounted on the housing 1, it is not necessary to insert the iron core portion of the rotor 3, and the hole provided in the center portion can be minimized, the space of the terminal block 11 can be expanded, and various motor protection devices and connectors Parts and the like can be mounted, and electrical connection between the pin terminal 10 and the capacitor terminal 7-1 and the terminal block 11 can be performed only by mechanical assembling work and without work such as soldering or welding. Then, the combination work of the annular capacitor 7 and the terminal block 11, the mounting work on the inner peripheral wall of the anti-load side housing 1a, and the fitting and assembling work of the stator 2 to the load side housing 1b can be performed in separate processes. Yes, the working time can be shortened.

(Embodiment 4)
As shown in FIGS. 1, 2, 13, 16, and 17, the electric motor is coaxially fitted to the inner peripheral walls of a pair of cylindrical housings 1 and spaced along the circumferential direction of the stator core 4. Between the stator 2 having the stator winding 5 wound around the plurality of teeth provided radially via the insulating bobbin 9 and the central portions of the two axial side walls of the pair of housings 1. A rotor 3 that is rotatably supported, and an annular capacitor 7 for operation includes an outer peripheral portion of the stator winding 5, an outer diameter side rising portion 9-1 of the insulating bobbin 9, and an inner peripheral wall of the housing. It is coaxially arranged in the annular dead space 6 formed between the two and is housed in the housing 1, and is anti-fixed from the outer diameter side rising portion 9-1 or the inner diameter side rising portion 9-2 of the insulating bobbin 9. It is electrically connected by winding the winding terminal wire 5-1 of the stator winding 5 extending in the direction of the core of the stator. A terminal block including an elastic terminal 12 made of a plate-like conductive material having an engaging portion for electrical connection with the connected pin terminal 10 and the capacitor terminal 7-1 as an electrode of the annular capacitor 7 for operation. 11, the conductive elastic terminal 12 of the terminal block 11 is provided with an engaging portion so as to face the corresponding portions of the pin terminal 10 and the capacitor terminal 7-1, and the space between the elastic terminals 12 is necessary. Accordingly, they are electrically coupled by a conductive plate 12-1 made of a plate-like conductive material. An annular capacitor 7 for operation and a terminal block 11 provided with a hole 11-1 having a diameter slightly larger than the outer diameter of the bearing holding portion of the housing 1 and smaller than the outer diameter of the rotor core at the center thereof. Are coaxially mounted and fixed to the opposite side of the stator winding 5.

In the above configuration, the annular capacitor 7 for operation is coaxially mounted and disposed in the annular dead space 6 inevitably formed by the outer peripheral portion of the stator winding 5 and the inner peripheral wall of the housing 1. Thus, the space in the housing 1 can be used effectively, and compared with the case where the annular capacitor 7 for operation is arranged in the axial space 8 of the stator winding 5, it can be used effectively and the axial dimension of the motor is reduced. Will be able to. Then, the pin terminal 10 can be electrically connected to the terminal block 11 combined with the annular capacitor 7 only by a mechanical assembling work and without any work such as soldering or welding. The annular capacitor 7 and the terminal block 11
And the mounting work to the inner peripheral wall of the anti-load side housing 1a and the fitting and assembling work of the stator 2 to the load side housing 1b can be performed in separate processes, and the working time can be shortened. Become.

(Embodiment 5)
As shown in FIGS. 3, 6, 9, and 12, the engaging portion of the elastic terminal 12 made of a plate-like conductive material of the terminal block 11 extends from the load side or the non-load side toward the stator core 4. The pin terminal 10 provided on the insulating bobbin 9 and the capacitor terminal 7-1 of the driving annular capacitor 7 are configured to include the tip thereof.

  In the above configuration, the pin terminal 10 provided on the capacitor terminal 7-1 and the insulating bobbin 9 and entwined with the winding terminal wire 5-1 of the stator winding 5 has a plate-like conductivity disposed on the terminal block 11. The electrical connection is also completed at the same time by mechanically combining the spring-like engaging portions of the elastic terminal 12 made of material to each corresponding portion.

(Embodiment 6)
As shown in FIGS. 3, 10, and 18 to 20, the elastic terminal 12 made of a plate-like conductive material of the terminal block 11 has an engaging portion, and is provided on the capacitor terminal 7-1 and the insulating bobbin 9. In this configuration, a plate-like portion having a fitting hole portion 12-2 formed so as to open toward the load side is provided in the corresponding portion with respect to the pin terminal 10.

  In the above configuration, the pin terminal 10 provided on the capacitor terminal 7-1 and the insulating bobbin 9 and entwined with the winding terminal wire 5-1 of the stator winding 5 has a plate-like conductivity disposed on the terminal block 11. The pin terminal and the capacitor terminal are formed at the tip of each of the pin terminals and the capacitor terminals by making the fitting holes 12-2 of the spring-like engaging parts of the elastic terminal 12 made of material face each corresponding part and mechanically combining them. The mating hole portion of the corresponding plate-like portion is detachably inserted and engaged to complete electrical connection at the same time.

  In the second to sixth embodiments, the plate-like conductive material is used for wiring between the elastic terminals of the terminal block. However, the printed board copper foil may be used instead of the plate-like conductive material. Well, it makes no difference in its effects.

  In the sixth embodiment, the fitting hole of the engaging portion of the elastic terminal made of a plate-like conductive material arranged on the terminal block has a simple round hole shape. Or a burring structure, and there is no difference in the basic function and effect.

  By mounting an annular capacitor for operation in a space formed by the inner peripheral wall of the cylindrical housing and the outer peripheral portion of the stator winding, the internal space of the cylindrical housing can be effectively used for operation and startup. The present invention can be applied to an application in which the capacitor is incorporated without enlarging the outer shape of the electric motor having the capacitor.

DESCRIPTION OF SYMBOLS 1 Housing 1a Anti-load side housing 1b Load side housing 2 Stator 3 Rotor 4 Stator core 5 Stator winding 5-1 Winding terminal line 6 Annular dead space 7 Annular capacitor 7-1 Capacitor terminal 8 Axial space DESCRIPTION OF SYMBOLS 9 Insulating bobbin 9-1 Outer diameter side rising part 9-2 Inner diameter side rising part 10 Pin terminal 11 Terminal block 11-1 Hole 12 Elastic terminal 12-1 Conductive plate 12-2 Fitting hole part

Claims (7)

A pair of cylindrical housings;
A stator having a stator winding, which is fitted to the inner peripheral wall of the housing and wound through insulating bobbins on a plurality of teeth provided radially along the circumferential direction of the stator core; ,
A rotor rotatably supported between the central portions of both axial side walls of the pair of housings;
An annular capacitor for operation disposed coaxially in an annular dead space formed between a winding end outer peripheral portion of the stator winding and an outer peripheral side rising portion of the insulating bobbin and an inner peripheral wall of the housing; ,
A pin terminal extending from the outer peripheral side rising portion or the inner peripheral side rising portion of the insulating bobbin toward the anti-stator iron core and electrically connecting the winding terminal wire of the stator winding and the electrode of the annular capacitor As a terminal block comprising an elastic terminal made of a plate-like conductive material having an engaging portion electrically connected to the capacitor terminal as
The terminal block of the elastic terminal, to a surface of the stator side of the terminal block, it forms the engagement portion so as to face the respective corresponding portions of the pin terminals and the capacitor terminals,
The capacitor terminal and the pin terminal are motors with a built-in capacitor that are detachably engaged with the corresponding engaging portions provided on the terminal block against its elasticity. The stator is fitted to the inner peripheral wall of the housing on the load side,
The terminal block, than the outer diameter of the rotor iron core in a slightly larger diameter than the outer diameter of the bearing holding portion of the housing at the center thereof have a small diameter hole, the anti-load side of the stator winding Coaxially mounted and fixed,
The annular capacitor is mounted and fixed on the load side of the terminal block on the inner peripheral wall of the housing on the anti-load side,
According to claim 1 for electrically connecting between the anti-load side of the housing and the capacitor terminals and the terminal block of the elastic terminal by the said housing fitted with load-side stator combining after mounting the rotor Motor with built- in capacitor. The stator is fitted to the inner peripheral wall of the housing on the load side,
The terminal block, have a smaller diameter hole than the outer diameter of the rotor iron core in a slightly larger diameter than the outer diameter of the bearing holding portion of the housing at the center thereof, in a peripheral wall of the housing of the anti-load side Coaxially mounted and fixed on the anti-stator iron core side,
The annular capacitor is mounted and fixed on the outer periphery of the stator winding on the opposite side of the stator winding,
Electrical the pin terminals and the capacitor terminals of the anti-load side of the housing and the insulating bobbin and the terminal block of the elastic terminal by the said housing fitted with load-side stator combining after mounting the rotor The electric motor with a built- in capacitor according to claim 1, wherein the electric motor can be connected and assembled. The stator is fitted to the inner peripheral wall of the housing on the load side,
The terminal block, have a smaller diameter hole than the outer diameter of the rotor iron core in a slightly larger diameter than the outer diameter of the bearing holding portion of the housing at the center thereof,
The annular capacitor and the terminal block are electrically connected to each other and are fixedly mounted on the inner peripheral wall of the anti-load side housing. The rotor is connected to the anti-load side housing and the load side housing fitted with the stator. 2. The electric motor with a built- in capacitor according to claim 1, wherein the electric motor is assembled by combination after mounting. The stator is fitted to the inner peripheral wall of the housing on the load side,
The terminal block, have a smaller diameter hole than the outer diameter of the rotor iron core in a slightly larger diameter than the outer diameter of the bearing holding portion of the housing at the center thereof,
The annular capacitor and the terminal block are electrically connected to each other, and are mounted and fixed on the anti-load side of the stator winding, and are also electrically connected to a pin terminal that is electrically connected through a winding terminal wire. 2. The built- in capacitor type capacitor according to claim 1, wherein the motor is assembled by combining the load side housing fitted with the annular capacitor and the stator fitted with the terminal block and the anti-load side housing after the rotor is mounted. Electric motor. The engaging portion of the elastic terminal made of a plate-like conductive material of the terminal block is a hook portion formed so as to be concave from the load side to the anti-load side, and the pin terminal and the capacitor terminal provided on the bobbin are one at its distal end, any one of the preceding claims, characterized in that engagable disengaged against its elastic force to each of the corresponding elastic terminal portion consisting of a plate-shaped conductive material An electric motor with a built-in capacitor as described in 1. The conductive elastic terminal engaging portion of the terminal block is a plate-like portion having respective fitting hole portions formed so as to open toward the load side at the corresponding portions with respect to the pin terminals provided on the capacitor terminal and the bobbin. , pin terminals and the capacitor terminals arranged on said bobbin claims 1 to 5 at its distal end, characterized in that engagement is detachably inserted into the fitting hole portion of the corresponding plate-like portion The electric motor with a built-in capacitor according to any one of the above.

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