JP2010098843A - Rotary electric machine and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a rotary electric machine, which can reduce a cost by eliminating the need of temporary holding, etc. of lead wires when assembling a motor body. <P>SOLUTION: In the rotary electric machine 10, an other-end side of a terminal 18 protrudes outward in the radial direction of a motor from the outer periphery 16A of a brush holder 16, and a storage 40 for storing the other-end side of the terminal 18 is formed integrally with the outer periphery 16A of the brush holder. A one-end side of each of lead wires 20 is connected to the other-end side of the terminal 18 inside the storage 40. The storage 40 is formed with an opening 40A which opens in the axis direction of the motor, and the inside of the storage 40 is filled with a sealing material 44 injected through the opening 40A. With this arrangement, the lead wires 20 and the terminal 18 can be connected after assembling a motor body, eliminating temporary holding, etc. of the lead wires 20 when assembling the motor body (an armature 12, a motor housing 14, the brush holder 16, and an end housing 22), thereby further reducing cost. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotating electrical machine and a method for manufacturing the same.

Conventionally, as a rotating electrical machine, for example, there is the following (for example, see Patent Document 1). That is, in the fan motor described in Patent Document 1, a spoke is formed in the casing, and the lead wire is held by the spoke. And the lead wire hold | maintained at this spoke is connected with the lead wire connection part of PC board.
Utility Model Registration No. 25589870 (FIG. 1)

  However, in the fan motor described in Patent Document 1, it is necessary to connect the lead wire to the lead wire connecting portion of the PC board before assembling the motor body.

  The present invention has been made in view of the above facts, and an object of the present invention is to provide a rotating electrical machine that can connect a lead wire and a terminal after the motor body is assembled.

  Another object of the present invention is to provide a method of manufacturing a rotating electrical machine that can eliminate the need for temporary holding of a lead wire or the like when assembling a motor body, and can reduce costs.

  In order to solve the above-described problem, the rotating electrical machine according to claim 1 is a rotating shaft, a core fixed to the rotating shaft, a winding wound around the core, and fixed to the rotating shaft. An armature configured to have a commutator connected to the winding; a stator to which a magnet facing the core is fixed; a brush holder that holds a brush that is in sliding contact with the commutator; While being held by the brush holder, one end side is electrically connected to the brush, and the other end side is provided on the outer shape portion of the brush holder, and is provided on the outer shape portion of the brush holder. A housing portion configured to house the other end side and have an opening opened to the outside of the motor, and a relay having one end side connected to the other end side of the terminal inside the housing portion. It includes a word line, and a sealing material filled inside the housing portion through the opening.

  In the rotating electrical machine according to the first aspect, the terminal is held by the brush holder, and one end side of the terminal is electrically connected to the brush, and the other end side protrudes from the outer shape of the brush holder. In addition, the outer portion of the brush holder is provided with a housing portion, and the housing portion is configured to house the other end side of the terminal and have an opening for filling the sealing material therein. ing. Further, one end side of the lead wire is connected to the other end side of the terminal inside the accommodating portion.

  And in the rotary electric machine of this Claim 1, the assembly in the following points, for example, is possible by the above-mentioned composition. That is, after the motor body assembling step for assembling the armature, the stator, the brush holder, and the housing part integrally, the one end side of the lead wire and the other terminal in the housing part provided in the outer part of the brush holder A sealing material filling step of performing a lead wire connecting step for connecting the end side and injecting a sealing material from an opening formed in the housing portion and filling the inside of the housing portion after the lead wire connecting step. It is possible to do.

  Thus, according to the rotating electrical machine of the first aspect, the lead wire and the terminal can be connected after the motor body is assembled.

  In addition, according to the rotating electrical machine of the first aspect, since the lead wire can be directly connected to the terminal, an increase in the number of parts can be prevented, thereby reducing the cost.

  Further, according to the rotating electrical machine of the first aspect, since the lead wire and the terminal can be connected after the motor body is assembled, provisional holding of the lead wire or the like can be eliminated when the motor body is assembled. This can further reduce the cost.

  According to a second aspect of the present invention, in the rotary electric machine according to the first or second aspect, the housing portion is formed integrally with the brush holder.

  According to the rotating electrical machine of the second aspect, since the housing portion is formed integrally with the brush holder, an increase in the number of parts can be prevented.

  The rotating electrical machine according to claim 3 is the rotating electrical machine according to claim 2, wherein the terminal is held by the brush holder, and one end side is electrically connected to the brush, and one end side is The other end side of the motor terminal is connected to the other end side, and the other end side is divided into a lead wire terminal protruding from the outer shape of the brush holder.

  According to the rotating electrical machine of the third aspect, the terminal is divided into the motor terminal and the lead wire terminal. Therefore, for example, the motor terminal can be formed in a shape suitable for molding on the brush holder, and the lead wire terminal can be formed in a shape suitable for connection with the lead wire. Thereby, the workability | operativity at the time of molding a motor terminal to a brush holder and the workability | operativity at the time of connecting a lead wire terminal and a lead wire can be made compatible.

  Moreover, in order to solve the said subject, the manufacturing method of the rotary electric machine of Claim 4 is a manufacturing method of the rotary electric machine as described in any one of Claims 1-3, Comprising: The said armature The stator, the brush holder, and the motor body assembling step integrally, and after the motor body assembling step, one end side of the lead wire and the terminal inside the housing portion A lead wire connecting step of connecting the other end side; and a sealing material filling step of filling the inside of the housing portion with the sealing material through the opening after the lead wire connecting step.

  According to the method of manufacturing a rotating electrical machine according to claim 4, since the lead wire and the terminal are connected after the motor body is assembled, provisional holding of the lead wire or the like can be eliminated when the motor body is assembled, and the cost is reduced. Can be reduced.

  Hereinafter, an embodiment of a rotating electrical machine of the present invention will be described with reference to the drawings.

  FIG. 1 shows an exploded perspective view of a rotating electrical machine 10 according to an embodiment of the present invention. The rotating electrical machine 10 shown in this figure is suitably used as a fan motor for an automobile, for example, and includes an armature 12, a motor housing 14 as a stator, a brush holder 16, a terminal 18, and leads. A wire 20 and an end housing 22 are provided as main components.

  The armature 12 is fixed to the rotating shaft 24, a core 26 fixed to the rotating shaft 24, windings (not shown) wound around a plurality of teeth 28 formed on the core 26, and the rotating shaft 24. And a commutator 30 connected to the winding.

  The motor housing 14 is formed in a bottomed cylindrical shape, and a magnet (not shown) is fixed to the inner peripheral surface thereof so as to face the core 26 in the motor radial direction.

  The brush holder 16 is formed in a substantially disk shape, and includes a brush 32 that is in sliding contact with the commutator 30 and a brush box 34 that accommodates the brush 32 so as to be movable in the motor radial direction. Yes.

  Here, FIG. 2 shows an A part of FIG. 1 in an enlarged view, and FIG. 3 shows an exploded view of this A part.

  As shown in FIG. 3, the terminal 18 is divided into a motor terminal 36 and a lead wire terminal 38. The motor terminal 36 is held by the brush holder 16 by being molded integrally with the brush holder 16. One end side of the motor terminal 36 is electrically connected to the brush 32 described above.

  On the other hand, one end side of the lead wire terminal 38 is connected to the other end side of the motor terminal 36 by spot welding or the like, and the other end side of the lead wire terminal 38 is connected to the outer peripheral portion 16A (outer portion) of the brush holder 16. It protrudes outward in the motor radial direction.

  In addition, the above-described brush holder 16 is integrally formed with an accommodating portion 40 that protrudes radially outward from the outer peripheral portion 16A. The accommodating portion 40 has a box shape having an opening 40A opened to one side in the motor axial direction (outside the motor), and accommodates the other end side (the other end side of the terminal 18) of the lead wire terminal 38. ing.

  Further, an insertion hole 42 into which one end side of the lead wire terminal 38 is inserted is formed in the wall portion 40B (a part of the outer peripheral portion 16A of the brush holder 16) constituting the accommodating portion 40.

  One end side of the lead wire 20 is connected to the other end side of the terminal 18 inside the housing portion 40, and a connector (not shown) connected to a control device (not shown) is connected to the other end side of the lead wire 20. It is connected.

  Further, the inside of the accommodating portion 40 is filled with a sealing material 44, whereby the insulation of the connecting portion between the lead wire terminal 38 and the lead wire 20 and the waterproofness inside the motor (the insertion hole 42 is provided). To prevent water from entering the motor).

  And the rotary electric machine 10 which consists of the said structure is assembled by the following procedure, for example.

  That is, one end side of the lead wire terminal 38 is inserted into the insertion hole 42, and a terminal connection step is performed in which one end side of the lead wire terminal 38 and the other end side of the motor terminal 36 are connected by spot welding or the like.

  Subsequently, after the terminal connection process, the brush holder 16 is placed on the end housing 22 and the motor body assembly process for fixing the end housing 22 and the motor housing 14 in a state where the armature 12 is assembled to the motor housing 14. I do.

  In addition, after the motor body assembling step, the other end side of the lead wire terminal 38 is caulked in a state where the one end side of the lead wire 20 is temporarily fixed to the other end side of the lead wire terminal 38 inside the housing portion 40. At the same time, a lead wire connecting step of connecting one end side of the lead wire 20 and the other end side of the lead wire terminal 38 by welding or the like is performed.

  Then, after the lead wire connecting step, a sealing material filling step is performed in which the sealing material 44 is injected from the opening 40A and the inside of the housing portion 40 is filled with the sealing material 44. The rotating electrical machine 10 is assembled in the manner described above.

  Next, the operation and effect of one embodiment of the present invention will be described.

  Here, the embodiment and the comparative example of the present invention are compared to clarify the operation and effect of the embodiment of the present invention. In the following comparative examples, the same reference numerals are used for the same configuration as the configuration in the embodiment of the present invention described above.

  FIG. 4 shows an exploded perspective view of the rotating electrical machine 110 according to the first comparative example. Further, FIG. 5 shows an enlarged view of a portion B of FIG.

  In the rotating electrical machine 110 according to the first comparative example, a terminal 118 is provided on the brush holder 16. Then, the lead wire 20 is connected to the terminal 118 on the brush holder 16 by crimping the terminal 118 with the lead wire 20 temporarily fixed to the terminal 118.

  Further, the lead wire 20 is integrally provided with a grommet 150 for waterproofing inside the motor.

  The rotating electrical machine 110 according to the first comparative example is assembled in the following manner.

  That is, a terminal connection process for connecting the lead wire 20 to the terminal 118 on the brush holder 16 is performed by caulking the terminal 118 with the lead wire 20 temporarily fixed to the terminal 118.

  Then, after this terminal connection process, the brush holder 16 is caulked and fixed to the end housing 22, and the motor body assembly process for assembling the armature 12 and the motor housing 14 to the end housing 22 is performed. The rotating electrical machine 110 is assembled in the manner described above.

  However, in the rotating electrical machine 110 according to the first comparative example, as described above, the lead wire 20 is connected to the terminal 118 before the motor body (armature 12, motor housing 14, brush holder 16, end housing 22) is assembled. Need to connect. Therefore, when assembling the motor body, a dedicated jig for temporarily holding the lead wire 20 or the like in the production line is required, which increases the cost.

  FIG. 6 shows an exploded perspective view of the rotating electrical machine 210 according to the second comparative example. Further, FIG. 7 shows a portion C of FIG. 6 in an enlarged view, and FIG. 8 shows a connector 248 of FIG. 7 in an exploded perspective view. Further, FIG. 9 shows a diagram for explaining the assembly procedure of the rotating electrical machine 210 of FIG.

  In the rotating electrical machine 210 according to the second comparative example, as shown in FIGS. 7 and 8, a connector 248 is provided on one end side of the lead wire 20. The connector 248 includes a grommet 250, a connector case 252, a rubber packing 254, and a lead wire terminal 238.

  The rotating electrical machine 210 according to the second comparative example is assembled in the following manner.

  That is, a lead wire assembling step for assembling the grommet 250, the connector case 252, the rubber packing 254, and the lead wire terminal 238 on one end side of the lead wire 20 is performed.

  In addition, while the brush holder 16 is placed on the end housing 22 and the armature 12 is assembled to the motor housing 14, a motor body assembling process for fixing the end housing 22 and the motor housing 14 is performed.

  Then, after the motor body assembling step, a connector connecting step for connecting the connector 248 to the motor body is performed (see FIG. 9).

  However, in the rotating electrical machine 210 according to the second comparative example, as described above, the grommet 250, the connector case 252, the rubber packing 254, and the lead wire terminal 238 are required, and the cost increases due to the increase in the number of parts. To increase.

  On the other hand, in the rotating electrical machine 10 according to the embodiment of the present invention, the other end side of the lead wire terminal 38 protrudes outward in the motor radial direction from the outer peripheral portion 16A (outer shape portion) of the brush holder 16.

  In addition, an accommodating portion 40 is integrally formed on the outer peripheral portion 16 </ b> A of the brush holder 16, and the accommodating portion 40 accommodates the other end side of the lead wire terminal 38 and fills the inside with a sealing material 44. For this reason, it is configured to have an opening 40A. The lead wire 20 has one end connected to the other end of the lead wire terminal 38 inside the housing portion 40.

  And in this rotary electric machine 10, by the said structure, as mentioned above, after the motor main body assembly | attachment process which assembles | assembles the armature 12, a stator, and the brush holder 16 integrally, one end of the lead wire 20 is accommodated in the accommodating part 40 inside. It is possible to perform a lead wire connecting step of connecting the side and the other end side of the lead wire terminal 38, and after this lead wire connecting step, a sealing material filling step of filling the sealing material 44 into the accommodating portion 40 can be performed. It has become.

  As described above, according to the rotating electrical machine 10 according to the embodiment of the present invention, the lead wire 20 and the lead wire terminal 38 are assembled after the motor main body (armature 12, motor housing 14, brush holder 16, end housing 22) is assembled. Can be connected. Therefore, when assembling the motor main body, a dedicated jig for temporarily holding the lead wire 20 or the like in the production line is not required, thereby reducing the cost.

  In addition, according to the rotating electrical machine 10 according to the embodiment of the present invention, the lead wire 20 can be connected to the lead wire terminal 38 by, for example, caulking or welding, so that an increase in the number of parts can be prevented. Thus, the cost can be further reduced.

  Furthermore, according to the rotating electrical machine 10 according to the embodiment of the present invention, since the accommodating portion 40 is formed integrally with the brush holder 16, it is also possible to prevent an increase in the number of parts.

  Further, according to the rotating electrical machine 10 according to the embodiment of the present invention, the terminal 18 is divided into the motor terminal 36 and the lead wire terminal 38. Therefore, for example, the motor terminal 36 can be formed in a shape suitable for molding on the brush holder 16, and the lead wire terminal 38 can be formed in a shape suitable for connection with the lead wire 20. Thereby, the workability at the time of molding the motor terminal 36 into the brush holder 16 and the workability at the time of connecting the lead wire terminal 38 and the lead wire 20 can be made compatible.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited above, Of course, it can change and implement variously within the range which does not deviate from the main point. .

  For example, in the above embodiment, the terminal 18 is divided into the motor terminal 36 and the lead wire terminal 38. For example, even if the terminal 18 is integrally formed, the terminal 18 is molded with the brush holder 16 and molding. If the terminal 18 can be easily integrated, the terminal 18 may be formed integrally.

  Moreover, in the said embodiment, although the accommodating part 40 was integrally formed in the brush holder 16, when the increase in cost can be suppressed to the minimum, it is formed separately from the brush holder 16, for example. May be.

  Moreover, in the said embodiment, although the accommodating part 40 was set as the structure protruded in the motor radial direction from 16 A of outer peripheral parts of the brush holder 16, for example, from the bottom face part (outer shape part) of the brush holder 16, for example. It may be configured to project in the motor shaft direction.

It is a disassembled perspective view of the rotary electric machine which concerns on one Embodiment of this invention. It is a principal part enlarged view of the A section shown by FIG. FIG. 3 is an exploded view of part A shown in FIG. 2. It is a disassembled perspective view of the rotary electric machine which concerns on a 1st comparative example. It is a principal part enlarged view of the B section shown by FIG. It is a disassembled perspective view of the rotary electric machine which concerns on a 2nd comparative example. It is a principal part enlarged view of the C section shown by FIG. FIG. 8 is an exploded perspective view of the connector shown in FIG. 7. It is a figure explaining the assembly | attachment point of the rotary electric machine shown by FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Rotary electric machine, 12 ... Armature, 14 ... Motor housing (stator), 16 ... Brush holder, 16A ... Outer peripheral part (outer part), 18 ... Terminal, 20 ... Lead wire, 22 ... End housing, 24 ... Rotating shaft, 26 ... Core, 28 ... Teeth, 30 ... Commutator, 32 ... Brush, 34 ... Brush Box, 36 ... Motor terminal, 38 ... Lead wire terminal, 40 ... Housing, 40A ... Opening, 40B ... Wall, 42 ... Insertion hole, 44 ... Seal Material

Claims (4)

An armature comprising a rotating shaft, a core fixed to the rotating shaft, a winding wound around the core, and a commutator fixed to the rotating shaft and connected to the winding When,
A stator to which a magnet facing the core is fixed;
A brush holder for holding a brush in sliding contact with the commutator;
While being held by the brush holder, one end is electrically connected to the brush, and the other end protrudes from the outer shape of the brush holder; and
An accommodating portion that is provided on the outer shape of the brush holder, accommodates the other end of the terminal, and has an opening that is open to the outside of the motor;
A lead wire having one end side connected to the other end side of the terminal inside the accommodating portion;
A sealing material filled inside the housing through the opening;
Rotating electric machine with The accommodating portion is formed integrally with the brush holder,
The rotating electrical machine according to claim 1. The terminal is
A motor terminal held by the brush holder and electrically connected to the brush at one end side;
One end side is connected to the other end side of the motor terminal, the other end side is a lead wire terminal protruding from the outer shape of the brush holder,
Divided into
The rotating electrical machine according to claim 1 or 2. It is a manufacturing method of the rotary electric machine according to any one of claims 1 to 3,
A motor body assembling step for assembling the armature, the stator, the brush holder, and the housing unit together;
After the motor body assembling step, a lead wire connecting step for connecting one end side of the lead wire and the other end side of the terminal inside the housing portion;
After the lead wire connecting step, a sealing material filling step for filling the inside of the housing portion with the sealing material through the opening,
The manufacturing method of the rotary electric machine provided with.

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