JPH07194063A - Small motor and method of connecting with electronic part having built-in motor - Google Patents

Abstract

PURPOSE:To provide a small motor and a method of connecting an electronic part, which can effectively remove electric noise, etc., by attaching an electronic part fitted with a lead wire to the inside of the motor without additional connection work. CONSTITUTION:A small motor, which has a female terminal 11 to engage removably with a male terminal 1 for current supply, is provided with a housing where a stator is attached inside, an insulating cover material 10 which engages with this housing and is provided with a female terminal 11, and a rotor, which is arranged rotatably within the motor surrounded by this cover member 10 and the housing. Furthermore, this is equipped with a capacitor 22 fitted with a lead wire, which is provided inside the cover member 10 and in which the lead wire 21 is locked in the boss 23 of the cover member 10, and a female side terminal 34, which consists of the flexible conductor being bent by the male terminal 12 inserted in the female terminal 11 for the male terminal 12 so as to pressure-contact with the lead wire 21 and is provided inside the cover member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small motor, and more particularly to optical precision equipment such as a small camera, audio / visual equipment such as a VTR, OA equipment such as a copying machine, and electrical equipment for an automobile such as a door lock mechanism. The present invention relates to a small motor with a built-in electronic component used in.

[0002]

2. Description of the Related Art Small motors are widely used in various fields other than the above-mentioned various kinds of equipment, and have been improved in performance such as reduction in size, weight and thickness and removal and reduction of electric noise.

In a small motor, a stator is mounted inside a casing, and a rotor is arranged inside the casing. A rotating shaft of the rotor is rotatably supported by a bearing device mounted on the casing. There is. A commutator is provided on the rotating shaft, and a brush attached to the casing is slidably engaged with the commutator. The casing includes a housing formed of a metal material in a hollow cylindrical shape with a bottom, and a lid member that is fitted in an opening of the housing and is formed of an insulating material.

Electric noise includes spark noise caused by sliding of a commutator and a brush, but as one method for removing or reducing electric noise for improving the performance of a small motor, a capacitor or the like is used. There is a case where the electronic parts of are built in the motor. Although a small motor incorporating a chip capacitor without a lead wire is also known, such a chip capacitor generally has a small capacity, and therefore electric noise cannot be sufficiently removed or reduced in many cases. Therefore, a motor having a built-in capacitor with a large lead wire has been proposed.

[0005]

[Problems to be solved by the invention]
Japanese Patent Laid-Open No. 58 and Japanese Utility Model Laid-Open No. 1-101156 disclose a motor including a capacitor with a lead wire for removing or reducing electric noise.

In the motor disclosed in the former publication, since the capacitor is provided outside the motor casing, an extra mounting space for the capacitor is required, and the device such as an actuator to which the motor is mounted becomes large in size. There is. Further, since each lead wire of the capacitor has to be caulked and fixed, there is a problem that the wiring work becomes complicated.

On the other hand, in the case of the motor disclosed in the latter publication, since the capacitor is built in the motor, an extra mounting space for the capacitor is unnecessary. However, since one lead wire of the capacitor is connected to the terminal and the other ground lead wire is guided to the outside of the motor through the notch and the through hole formed in the lid member, the work of attaching each lead wire is not required. It becomes complicated.

Further, it is necessary to manually connect one lead wire and the terminal to each other by wiring, by electric resistance welding or spot welding, but this work is very complicated and it is difficult to automate the wiring work. . Particularly in the case of small motors, the space inside the motor is extremely small, so advanced technology is required for soldering work, etc., and other motor parts may be damaged by the scattering of solder or solder paste inside the motor. There is also a possibility that the yield of products may be reduced. Also,
If too much solder adhered, the capacitor could be short-circuited with the casing. In addition, since harmful gas and odor are generated during the soldering work, it is necessary to take measures against the working environment.

The present invention has been made in order to solve such a problem, and an electronic component with a lead wire can be mounted inside a motor to effectively remove electric noise and the like without separately performing wiring work such as soldering work. Alternatively, it is an object of the present invention to provide a connection method for a small motor and an electronic component that can reduce the number.

[0010]

In order to achieve the above-mentioned object, a small motor according to the present invention is a small motor having a female terminal portion which is detachably engaged with a male terminal for supplying current. A housing having a stator attached to it, an insulative lid member fitted to the housing and provided with the female terminal portion, and a rotatably arranged inside the motor surrounded by the lid member and the housing. A rotor provided, and an electronic component with a lead wire provided inside the lid member, the lead wire being locked to a locking portion of the lid member,
A flexible conductor that is bent by being pressed by the male terminal inserted into the female terminal portion and presses against the lead wire; and a female side terminal provided inside the lid member. It is a thing.

The leaded electronic component is either a capacitor or a surge absorber, and is preferably connected in parallel between the pair of female side terminals via the leaded wire.

A positive characteristic for controlling a current to the armature winding of the rotor is provided between one of the female side terminals and a brush arm made of a conductor provided on the lid member and having a brush attached thereto. A thermistor may be attached, and the PTC thermistor may be brought into pressure contact with the one female side terminal and the brush arm by the elastic force of the one female side terminal.

Further, according to the present invention, there is provided a method of connecting an electronic component having a built-in motor, wherein a stator is attached to the inside of the housing, and an insulating member having a female terminal portion is detachably engaged with a male terminal for supplying current. In a small motor having a flexible lid member fitted in the housing and having a rotor rotatably disposed inside the motor surrounded by the housing and the lid member, wherein The component is provided inside the lid member, the lead wire of the electronic component is locked to the locking portion of the lid member, and the male terminal is inserted into the female-shaped terminal portion so that the inside of the lid member is closed. By pressing the female side terminal made of a flexible conductor, the female side terminal is bent and brought into pressure contact with the lead wire.

[0014]

In the present invention, a small motor is completed by incorporating an electronic component with a lead wire into the motor so that the lead wire is locked to the locking portion of the lid member. When the male terminal is inserted into the female terminal portion from the outside of the motor, the male terminal presses the female side terminal inside the motor. Then, the female side terminal bends against the elastic force and comes into contact with the lead wire with a strong pressing force, and presses the lead wire against the locking portion. As a result, the lead wire is clamped with a strong force between the female side terminal and the insulating locking portion, and cannot be easily pulled out. Also, electrical connection between the lead wire and the female side terminal is secured.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. (First Embodiment) FIGS. 1 to 11 are views showing a first embodiment of the present invention. First, the overall configuration of the small motor according to the present invention will be described with reference to FIGS. 1 to 4. 1 is an external view of a motor, and FIGS. 2 to 4 are a plan view, a side sectional view, and a one-side sectional front view of the motor, respectively.

As shown in the figure, a small direct current motor 1 as a small motor comprises a casing 3 in which a stator 2 is attached, and a rotor 4 arranged inside the casing 3 for rotation. The rotating shaft 5 of the child 4 is rotatably supported by bearing devices 6 and 7 provided in the casing 3. The casing 3 is fitted in a conductive housing 8 formed in the shape of a hollow cylinder with a bottom and an opening 9 of the housing 8 by a conductor such as a cold-rolled steel plate made of mild steel, for example, a resin material or An insulating lid member 10 made of another insulating material. The casing 3 is formed with a pair of flat portions 14 that form parallel surfaces.

The lid member 10 is provided with a pair of female terminal portions 11 to which a current is supplied from an external DC power source (not shown) via a male terminal 12 (see FIG. 5 described later). Male terminal 1 for current supply connected to external DC power supply
2 is removably inserted into the female side terminal portion 11. The male terminal 12 is not a component of the motor 1, but an actuator (not shown) to which the motor 1 is attached.
It is a part on the side.

The stator 2 is fixed to the cylindrical inner peripheral surface 15 of the housing 8 and comprises a pair of permanent magnets formed in an arc segment shape by a magnetic material such as hard ferrite. The rotor 4 is the lid member 1
It is rotatably disposed inside the motor 13 surrounded by the housing 0 and the housing 8. The rotor 4 includes a rotating shaft 5 extending in a direction of a central axis which is a rotation center, a core 17 attached to the rotating shaft 5 and having an armature winding 16 wound in a coil shape,
The commutator 18 is attached to the rotating shaft 5 and is electrically connected to the armature winding 16. Core 17
Are arranged inside the stator 2 with a predetermined gap therebetween.

FIG. 5 is an internal structural view including the lid member 10 of FIG. 1, and the entire structure is bilaterally symmetrical as shown in the drawing. In addition, for convenience of explanation below, "up, down, left, right"
The words such as "" take the position and direction in FIG. 5 as an example. As shown in the figure, a plurality of sets (for example, 2
A pair of brushes 19 are provided so as to be in sliding contact with the commutator 18 (FIG. 4) so as to pass an electric current. The brush 19 is attached to the free end of a brush arm 20 made of a conductor such as phosphor bronze for spring or beryllium copper.
Is attached inside the lid member 10.

An electronic component 22 with a lead wire having a pair of lead wires 21 is provided inside the lid member 10 and in the central portion of the upper portion, and each lead wire 21 is a locking portion 2 of the lid member 10.
It is locked to 3. The diameter of the lead wire 21 is, for example, 0.
It is 4 mm to 0.7 mm. The electronic component 22 is for removing or reducing electric noise and the like, and is, for example, a capacitor or a surge absorber (surge absorber). In this embodiment, the capacitor 22 such as a porcelain capacitor is used as the electronic component. .

In the condenser 22, the brush 19 is the commutator 1
It is possible to remove or reduce the pulsation of a current having a sharp and excessive amplitude generated by sliding contact with the brush 8, the spark noise due to the generation of sparks between the brush 19 and the commutator 18, and the like. . On the other hand, in the electric circuit of the motor 1, a surge voltage may momentarily exceed the normal voltage, and when this surge voltage occurs, various negative effects such as dielectric breakdown, function stoppage, malfunction and deterioration are caused. The surge absorber can absorb such a harmful surge voltage, and is, for example, an arrester, a varistor, a Zener diode, or the like.

The female terminal 11 of the lid member 10 has a through hole 30 for inserting the male terminal 12. The male terminal 12 has a through hole 30 inside the lid member 10.
An insulative guide member 31 is formed to guide and hold the terminal 12 which is slidably contacted when it is inserted into the. Guide member 3
1 is integrally attached to the back side wall portion 32 of the lid member 10 and the inner wall portion 33 of the lid member 10. Guide member 31
Are provided on the left and right, and are formed so as to project in the direction of the housing 8 (hereinafter referred to as the front).

The female-side terminals 34 of the female-shaped terminal portion 11 are provided in a pair on the left and right inside the lid member 10 and are made of a flexible conductor such as phosphor bronze for spring or beryllium copper. When the female terminal 12 is inserted into the female terminal portion 11, the female-side terminal 34 is pressed by the male terminal 12 to bend and elastically deform to come into pressure contact with the lead wire 21.

The capacitor 22 is connected in parallel between the pair of female side terminals 34 via the respective lead wires 21. The central portion 35 of the female side terminal 34 is pressed against and electrically connected to the flat plate portion 36 of the brush arm 20. Since the flat plate portion 36 does not need to be springy, this portion 36 may be formed of brass or the like.

The upper end portions of the left and right female side terminals 34 are curved to form an S shape and an inverted S shape, respectively.
An S-shaped portion (or an inverted S-shaped portion) 38 is held by an insulating holding portion 37 that is integrally formed with the. The lower end portion 39 of the female side terminal 34 is supported by an insulating support base 40 that is integrally formed with the lid member 10. Since the lid member 10 is bilaterally symmetric, the left female terminal 34 will be mainly described as an example. S-shaped portion 38 and guide member 3
A slit portion 41 is formed between 1 and
When the male terminal 12 is inserted into the slit portion 41, the male terminal 12 and the S-shaped portion 38 come into contact and are electrically connected.

In the small motor 1 having such a structure, first, the male terminal 12 connected to the external DC power source is inserted into the female terminal portion 11. Then, a current is passed from the male terminal 12 to the armature winding 16 via the female side terminal 34, the brush arm 20, the brush 19, and the commutator 18. Then, a rotational force is applied to the rotor 4 existing in the magnetic field formed by the pair of permanent magnets 2 and the rotor 4 rotates. As a result, the motor 1 drives an actuator or the like of an electric device for a vehicle (not shown) via the output portion of the rotating rotary shaft 5.

Next, a structure for connecting electronic components with a built-in motor and a method for connecting the electronic components will be described with reference to FIGS. FIG. 5 shows a state before the male terminal 12 is inserted. 6 is a partially enlarged structural view of FIG. 5, FIG. 7 is a sectional view showing the structure of the locking portion 23, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 6, and FIG. 9 is a sectional view taken along line IX-IX of FIG. Is.

In the method according to the present invention, the stator 2 is mounted inside the housing 8 and the male terminal 12 for supplying current is provided.
An insulative lid member 10 having a female terminal portion 11 that is removably engaged with the housing is fitted into the housing 8, and the rotor 4 is provided inside the motor 8 surrounded by the housing 8 and the lid member 10.
Is a method of connecting electronic components built in a small motor 1 rotatably arranged. The connection method is the lead wire 2
1 is provided inside the lid member 10, and the lead wire 21 of the electronic component 22 is locked to the locking portion 23 of the lid member 10 by the male terminal 12 inserted into the female terminal 11. By pressing the female side terminal 34 made of a flexible conductor provided inside the lid member 10, the female side terminal 34 is bent and brought into pressure contact with the lead wire 21.

As shown in FIG. 5, the lid member 10 is provided with a lid main body 53 whose both side surfaces 50 are circular and the upper surface 51 and the lower surface 52 are flat, respectively. The portion 54 is integrally formed so as to project forward. The outer dimension and shape of the housing fitting portion 54 are formed so as to correspond to the inner dimension and shape of the housing 8. Side protrusions 5 on both sides of the housing fitting portion 54
5 has a circular outer peripheral surface 56, and the outer surface 5 of the lower protrusion 57 is
8 is formed in a flat shape, and the outer surface 60 of the upper protruding portion 59 is also formed in a flat shape.

The inner surface 61 of the side protrusion 55 is formed in a flat shape, and the flat plate portion 36 of the brush arm 20 is in contact with this inner surface 61. On the back side wall portion 32 of the lid main body 53, a vertically long rectangular recess 62 continuous with the inner surface 61 is formed. An arc segment-shaped holding portion 37 is integrally formed at the upper center of the rear side wall portion 32 so as to project forward. The upper surface 63 of the holding portion 37 has a curved surface serving as an inner peripheral surface of a partially cylindrical shape, so that the capacitor 22 having a curved outer shape can be stably held in a close contact state.

Supporting surfaces 64 (FIGS. 6 and 8) which are parallel to each other are formed on the left and right outer sides of the holding portion 37, and the supporting surface 64 is a plane perpendicular to the back side wall portion 32 and oriented in the up-down direction. I am in a shape. The support surface 64 is the S of the female side terminal 34.
The character portion 38 is held slidably in the direction of arrow B (FIG. 6). As shown in FIGS. 6 and 8, a protruding edge portion 65 is integrally formed with the holding portion 37 at the front end portion of the support surface 64. The protruding edge portion 65 is formed to be long in the vertical direction, and the protruding edge portion 65 and the support surface 64 form a step portion 66, which prevents the S-shaped portion 38 from coming off forward. The front end of the protruding edge portion 65 is obliquely cut off to form the tapered surface 67, so that the lead wire 21
The projecting edge portion 65 does not get in the way when wiring.

In the vicinity of the guide member 31 and the holding portion 37,
A beam-shaped boss 23 as a locking portion is integrally formed so as to project forward from the back side wall portion 32, and the boss 23 is made of the same insulating material as the lid body 53. The boss 23 is located between the guide member 31 and the holding portion 37 and below the boss 23, and a pair of left and right bosses are provided. As shown in FIGS. 6 to 9, the boss 23 has a rectangular cross section, and the root portion 68 integrated with the wall portion 32 has a large cross sectional area to form a tapered surface 69. . This increases the strength of the boss 23 so that the boss 23 is not damaged even when the lead wire 21 is pressed by the elastic force of the female side terminal 34. On the upper surface 70 of the boss 23, a concave groove 71 for locking the lead wire 21 is formed in the longitudinal direction.

When the capacitor 22 is assembled, the lead wire 21 is inserted between the upper surface 70 of the boss and the lower surface 72 of the S-shaped portion 38 facing the boss against the elastic force of the female side terminal 34, and the lead wire 21 is inserted. The wire 21 is locked in the groove 71. Figure 5,
In the locked state before insertion of the male terminal 12 as shown in FIGS. 6 and 8, it is preferable that the lead wire 21 is hooked on both edge portions 76 of the concave groove 71. In this way, when the male terminal 12 is inserted, the S-shaped portion 38 is further bent and elastically deformed to press the lead wire 21, so that there is a pressing margin, so that the lead wire 21 is press-fitted into the concave groove 71. Can be made.

Therefore, as shown in FIG. 6, the width W of the groove 71 is slightly smaller than the diameter D of the lead wire 21,
The depth H of 1 is preferably about half the diameter D.
Further, as shown in FIG. 7 and FIG.
Since it has a shape that is open to the front end portion 24 side of the lead wire 24,
It is sufficient to insert the lead wire 21 into the concave groove portion 71, which facilitates the work of inserting the lead wire 21 into the concave groove portion 71 and molding.

When the lead wire 21 is inserted into the concave groove 71, the S-shaped portion 38 is pressed against the support surface 64 at the contact position P ₁ by the spring force of the female side terminal 34. Further, the lower surface 72 of the S-shaped portion 38 also contacts the lead wire 21 with a weak pressing force to lock the lead wire 21 in the concave groove 71. In addition,
It is preferable to bring the upper surface 73 of the S-shaped portion 38 into contact with the edge portion 74 of the guide member 31 because the relative positioning of the S-shaped portion 38 with respect to the lead wire 21 on the boss 23 becomes accurate.
In this way, the lid member 10 is assembled between the female side terminal 34 and the boss 23 in a state in which the lead wire 21 is held so as not to fall off. The motor 10 is assembled and completed by fitting the lid member 10 in which the respective parts are incorporated into the housing 8.

The female terminal portion 11 of the motor 1 having the above structure
The male terminal 12 is inserted in the direction of arrow G. As shown in FIG. 9, the male terminal 12 enters the slit portion 41 between the guide member 31 and the S-shaped portion 38 of the female-side terminal 34, and slides into contact with the guide member 31 to form the S-shaped portion 38. Is pressed to bend it toward the holding portion 37 (arrow C).

Then, the S-shaped portion 38 slides along the support surface 64 in the direction of arrow E, and the female-side terminal 34 leaves the edge portion 74 of the guide member 31 and abuts on the edge portion 75 of the boss 23. . The S-shaped portion 38 is pressed by the male terminal 12 and further bent in the direction of the arrow C and elastically deformed.
The supporting surface 6 is swung in the clockwise direction in FIG.
4 is further slid in the direction of arrow E, and the contact position moves from P ₁ to P ₂ . As a result, the S-shaped portion 38 is pressed against the lead wire 21 with a strong pressing force, so that the lead wire 21 is pressed toward the inside of the concave groove 71 (arrow F) and fits into the concave groove 71.

FIG. 10 is an internal structural view including the lid member 10.
FIG. 11 shows a state in which the male terminal 12 is mounted on the female terminal portion 11 as described above, and FIG. 11 is a partially enlarged structural view of FIG. As shown in the drawing, the lead wire 21 of the capacitor 22 built in the motor 1 is clamped by the boss 23 and the male side terminal 34 which is bent and elastically deformed by being pressed by the male terminal 12 with a strong pressing force. There is. Therefore, complicated wiring work such as soldering work and caulking work becomes unnecessary, and the workability of assembling the motor 1 is significantly improved.

Since the lead wire 21 and the female side terminal 34 are pressed against each other by a strong pressing force, both members 2
The electrical connection between 1, 34 is secured. Further, according to the present invention, since the electronic component 22 with the lead wire having a large capacity can be attached to the motor 1 to remove or reduce the electrical noise, the electrical noise can be effectively removed or reduced. Further, since the electronic component 22 can be built in the motor 1, it is not necessary to provide the electronic component on the outside of the motor, and an extra mounting space is unnecessary. Therefore, the motor can be made compact, and the devices such as the actuator can be made compact.

(Second Embodiment) FIGS. 12 and 13 show a second embodiment of the present invention. FIG. 12 is a partially enlarged sectional view including a lid member, showing a state before the male terminal 12 is inserted. Is shown. FIG. 13 is a partially enlarged sectional view including the lid member, showing a state in which the male terminal 12 is inserted.

As shown in FIG. 12, the lid member 1 of the present embodiment.
A female terminal portion 11a is formed at 0a, and a through hole 30a is formed in the female terminal portion 11a. A guide member 31a for slidingly supporting the male terminal 12 is integrally formed inside the lid member 10a. A part of the female-side terminal 34 a of the female-shaped terminal portion 11 a is provided with the lid member 10.
It is embedded in a base 80 formed integrally with a, and the tip end portion 81 of the female side terminal 34a is exposed outward from the base 80 and is bent and formed in an inverted J shape or a J shape. ing. A groove portion 83 having a V-shaped cross section is formed in the base 80 so as to face the back surface 82 of the tip portion 81.

The lead wire 21a of an electronic component such as a capacitor or a surge absorber is locked in the groove 83,
The groove portion 83 constitutes the locking portion 23a for the lead wire 21a. When the motor is completely assembled, the lead wire 21a is engaged with the groove portion 83 and comes into contact with the rear surface 82 of the female side terminal 34a and is pressed against the groove portion 83 by a weak spring force.

Bending portion 84 of tip portion 81 and guide member 31a
There is a slit portion 41a between and. Therefore,
As shown in FIG. 3, when the male terminal 12 is inserted from the through hole 30a into the slit portion 41a in the direction of arrow G, the tip portion 81 bends against the spring force and moves clockwise with the lead wire 21a as a fulcrum. Elastically deforms (arrow C). As a result, the female side terminal 34a is pressed against the lead wire 21a by a strong spring force as shown by the arrow F, and the lead wire 21a is held in the groove portion 83. Therefore, the same effect as that of the first embodiment is obtained. The guide member 31a and the base 80 are made of an insulating material as in the first embodiment, and the female side terminal 34a.
The material of is the same as that of the female side terminal 34 of the first embodiment.

(Third Embodiment) FIG. 14 is an internal structural view showing a third embodiment of the present invention including a lid member 10.
It shows a state where is attached. In this embodiment, the positive temperature coefficient thermistor 90 for controlling the current to the armature winding 16 of the rotor 4 is built in the lid member 10 of the first embodiment. The positive temperature coefficient thermistor 90 is a "positive temperature coefficient thermistor".
Or "PTC (positive temperature coefficient)"
It is also called a thermistor, and has a property that its resistance value increases as the temperature rises, and is a semiconductor made by adding a trace amount of a rare earth element or the like to barium titanate (BaTiO ₃ ).

In this embodiment, a positive temperature coefficient thermistor 90 is inserted between the female side terminal 34a on one side and the brush arm 20. Then, the two poles of the positive temperature coefficient thermistor 90 are brought into pressure contact with one female side terminal 34a and the brush arm 20 by the elastic force of the female side terminal 34a, and are connected in series. The back surface of the positive temperature coefficient thermistor 90 has a lid body 53.
It is fitted inside the recessed portion 62 formed in.

As shown, the PTC thermistor 90 has a large thickness dimension. Therefore, it is necessary to deform one female side terminal 34a more greatly than the other female side terminal 34. Therefore, one female side terminal 34a having a different shape is used, and the amount of elastic deformation is made substantially the same as that of the other female side terminal 34, so that the female side terminals 12 and the lead wires 21 on the left and right sides are pressed. Left and right S of terminals 34, 34a
It is preferable that the pressing force of the character-shaped portion 38 be substantially equal.

As described above, the positive temperature coefficient thermistor 90 has a characteristic that the internal resistance value rapidly increases when the temperature exceeds a certain temperature (for example, 100 ° C.). Therefore, if the internal temperature of the motor rises due to an overcurrent that flows when the motor is continuously overloaded or the rotation of the motor is forcibly locked, the internal resistance value of the positive temperature coefficient thermistor 90 also rapidly increases. . As a result, the current supplied to the motor is rapidly reduced to reduce the rotation speed of the motor and prevent overheating.

According to the third embodiment, the electronic component 22 prevents electrical noise, and the positive temperature coefficient thermistor 9 is used.
Zero prevents motor overheating. Moreover, since both parts 22 and 90 are built in the motor, it is not necessary to take extra mounting space for both parts 22 and 90 outside the motor, and the size of equipment such as an actuator to which the motor is mounted can be reduced. You can

As described above, according to the present invention, the soldering work or the crimping work is not required when connecting the electronic component 22, so that the electronic component 22 can be extremely easily and accurately manufactured without the need for a separate wiring work. It can be embedded and automation of the assembling work is easy. Further, since no solder is used, a short circuit due to soldering of the connection portion does not occur, and it is possible to prevent defective motors from being caused by soldering. Further, the solder and the solder paste do not scatter during the soldering work to damage other motor parts, and the product yield is improved. Further, no harmful gas or odor is generated by the soldering work, and the working environment is improved.

Although each of the above embodiments has been described with respect to a small DC motor, the present invention can be applied to an AC motor and other types of small motors. In the drawings, the same reference numerals indicate the same or corresponding parts.

[0051]

Since the present invention is configured as described above, it is possible to effectively remove or reduce electric noise and the like by mounting an electronic component with a lead wire inside a motor without separately performing wiring work.

[Brief description of drawings]

1 to 11 are views showing a first embodiment of the present invention, and FIG. 1 is an external view of a small motor.

FIG. 2 is a plan view of the motor shown in FIG.

FIG. 3 is a side sectional view of the motor shown in FIG.

4 is a one-sided sectional front view of the motor of FIG. 1. FIG.

5 is an internal structure diagram including the lid member of FIG. 1, showing a state before the male terminal is inserted and attached.

6 is a partially enlarged structural view of FIG.

FIG. 7 is a cross-sectional view showing the structure of a boss.

8 is a sectional view taken along the line VIII-VIII in FIG.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is an internal structure diagram including a lid member, showing a state in which a male terminal is inserted and attached.

11 is a partially enlarged structural view of FIG.

12 and 13 show a second embodiment of the present invention, and FIG. 12 is a partially enlarged cross-sectional view including a lid member, showing a state before inserting the male terminal.

FIG. 13 is a partially enlarged cross-sectional view including a lid member, showing a state in which a male terminal is inserted.

FIG. 14 is an internal structural view including a lid member showing a third embodiment of the present invention, showing a state in which a male terminal is inserted and attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 small motor (small DC motor) 2 stator 4 rotor 8 housing 10, 10a lid member 11, 11a female terminal part 12 male terminal 13 motor inside 16 armature winding 19 brush 20 brush arm 21, 21a lead wire 22 Capacitor (electronic component) 23 Boss (locking part) 23a Locking part 34, 34a Female side terminal 90 Positive temperature coefficient thermistor

Claims (4)

[Claims] 1. A small motor having a female-shaped terminal portion (11, 11a) releasably engaged with a male terminal (12) for supplying current, wherein a housing (2) is mounted inside the housing (2). 8)
And an insulative lid member (10, 10a) fitted to the housing and provided with the female terminal portion, and rotatably disposed inside a motor (13) surrounded by the lid member and the housing. The installed rotor (4) and the lead wires (21, 21) provided inside the lid member.
a) is bent by being pressed by the electronic component with a lead wire (22) locked to the locking portion (23, 23a) of the lid member and the male terminal inserted in the female terminal portion. In addition, a small motor comprising a flexible conductor that comes into pressure contact with the lead wire, and a female side terminal (34, 34a) provided inside the lid member. 2. The leaded electronic component (22) comprises:
The small motor according to claim 1, wherein the small motor is a capacitor or a surge absorber, and is connected in parallel between the pair of female side terminals via the lead wire. 3. The rotor between one of the female side terminals (34a) and a brush arm (20) provided on the lid member (10) and made of a conductor to which a brush (19) is attached. The positive characteristic thermistor (90) for controlling the current to the armature winding (16) of (4) is mounted, and the positive characteristic thermistor is connected to the one female side terminal by the elastic force of the one female side terminal (34a). The small motor as claimed in claim 2, wherein the brush arm and the brush arm are pressed against each other. 4. A stator (2) inside the housing (8).
And an insulative lid member (10, 10a) having female terminal portions (11, 11a) releasably engaged with a male terminal (12) for current supply is fitted to the housing, A method of connecting an electronic component (22) built in a small motor (1) in which a rotor (4) is rotatably disposed inside a motor (13) surrounded by the housing and the lid member, wherein: The components are provided inside the lid member, and the lead portions (21, 21a) of the electronic component are locked to the locking portions (23, 23a) of the lid member, and the lead wires (21, 21a) are inserted into the female terminal portion. By the male terminal,
A motor characterized in that by pressing a female side terminal (34, 34a) made of a flexible conductor provided inside the lid member, the female side terminal is bent and brought into pressure contact with the lead wire. How to connect built-in electronic components.