JP2001103705A - Drive motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily make electric connection in a motor without enlarging the drive motor. SOLUTION: A holding body 31 formed of synthetic resin is engaged into a fitting recessed part 252 formed in the housing 25 of an output part 22-side. When a motor main body 21 is directly connected to an output part 22, the inner wall face 242 of a housing 24 in the motor main body 21 abuts on the inclination faces 364 and 384 of presser pieces 361 and 381 in the holding body 31, and a presser projection part 365 presses a rotary state detection electric connection terminal 46 to an electric connection terminal 411. Thus, the rotary state detection electric connection terminal 46 and the electric connection terminal 411 are electrically connected by the pressing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a motor body and a terminal built-in section having a built-in electric connection terminal. The housing of the motor body and the housing of the terminal built-in section are directly or indirectly connected to each other. The present invention relates to a drive device motor in which a motor body and the terminal built-in portion are integrated.

[0002]

2. Description of the Related Art A motor for driving a power window device shown in FIGS. 10 and 11 is one type of the motor for the driving device. The power window device includes a motor 1 and an X-arm type regulator 2. The regulator 2 includes a support base 3 fixed to a vehicle door, a lift arm 5 rotatably supported on the support base 3 via a support shaft 17, and a sector gear 4 integrally connected to the lift arm 5. And an equalizer arm 6 rotatably connected to the lift arm 5, an equalizer bracket 7 for guiding the movement of the lower end of the equalizer arm 6, and the movement of the upper end of the equalizer arm 6 and the upper end of the lift arm 5. And a lift arm bracket 8 for guiding.

FIG. 8 shows an internal structure of an output unit 10 constituting the motor 1. A worm 11 connected to a rotating shaft (not shown) of a motor body 9 constituting the motor 1
0 is meshed with a worm wheel 15 fixed to an output shaft 14 inside covered with a housing 12 and a cover 13. The rotational force of the motor body 9 is transmitted to the sector gear 4 via the worm 11, the worm wheel 15, the output shaft 14, and the drive gear 16 fixed to the output shaft 14, and the sector gear 4 is centered on the support shaft 17. To rotate. The rotation of the sector gear 4 about the support shaft 17 causes the lift arm bracket 8 to move up and down, and a window glass (not shown) attached to the lift arm bracket 8 moves up and down.

[0004] There is a technique in which a detecting means for detecting foreign matter entrapment due to the closing operation of the window glass is built in the motor 1. One example of this technique is disclosed in Japanese Patent Application No. 10-35158. In the prior art disclosed in Japanese Patent Application No. 10-35158, a Hall element is used as the detection means for outputting rotation information of a motor.

[0005]

When the detecting means is built in the motor 1 by retrofitting, the electrical connection to the detecting means is made by soldering or caulking. However, in the connection method by soldering or caulking, it is necessary to provide a margin in the space near this connection portion, and the device becomes large. In addition, the above connection method requires a large number of work steps, and the electric connection work is troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to facilitate the above-mentioned electrical connection work without increasing the size of the motor for the driving device.

[0007]

SUMMARY OF THE INVENTION To this end, the present invention provides a motor body and a terminal built-in portion having a built-in electric connection terminal, and directly or indirectly connects a housing of the motor body and a housing of the terminal built-in portion. The present invention is directed to a motor for a driving device in which the motor main body and the terminal built-in portion are combined and integrated with each other. In the invention according to claim 1, holding means for holding an electric device includes a housing of the motor main body and the terminal built-in portion. The holding means is disposed between the housing of the motor main body and the housing of the terminal built-in portion when the housing of the motor main body and the housing of the terminal built-in portion are directly or indirectly connected. By
An electric connection unit is provided for electrically connecting the electric connection terminal on the side of the terminal built-in section and the electric connection terminal on the electric device side by pressure.

The electric connection terminal on the terminal built-in portion side and the electric connection terminal on the electric device side are easily electrically connected by directly or indirectly connecting the housing of the motor body and the housing of the terminal built-in portion. .

According to the invention of claim 2, in claim 1,
The housing of the motor body and the housing of the terminal built-in portion are directly connected to each other so as to incorporate the holding means.

[0010] The direct connection between the housing of the motor body and the housing of the terminal built-in portion facilitates ensuring the sealing property between the motor body housing and the housing of the terminal built-in portion.

According to a third aspect of the present invention, in any one of the first and second aspects, the electric connection means is a direct or indirect connection state between the housing of the motor main body and the housing of the terminal built-in portion. In the above, the electric connection terminal on the terminal built-in portion side and the electric connection terminal on the electric device side are press-contacted and electrically connected by elastic deformation.

The structure of electrically connecting the electric connection terminals on the terminal built-in portion side and the electric connection terminals on the electric device side by elastic deformation of the electric connection means is simple. According to a fourth aspect of the present invention, in the third aspect, the electric connection means is a pressing piece that is elastically deformed by interference with a housing of the motor main body or a housing of the terminal built-in section, and the pressing piece is provided on the motor main body. In a non-interference state with the housing or the housing of the terminal built-in section, the electric connection terminal on the side of the terminal built-in section and the electric connection terminal on the side of the electric device are not electrically connected to each other. In a state of interference with the housing of the motor body or the housing of the terminal built-in portion, the electric connection terminal on the side of the terminal built-in portion and the electric connection terminal on the side of the electric device are electrically connected.

The holding piece electrically connects the electric connection terminal on the terminal built-in portion side and the electric connection terminal on the electric device side by directly or indirectly connecting the housing of the motor body and the housing of the terminal built-in portion. Placed in the position.

According to a fifth aspect of the present invention, in any one of the third and fourth aspects, the holding means is made of a synthetic resin, and the electric connection means is integrally formed as a part of the holding means.

[0015] The integral formation of the holding means by synthetic resin facilitates the manufacture of the holding means. According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the holding means includes a brush holder.

The brush holder can be easily assembled. According to the seventh aspect of the present invention, any one of the first to sixth aspects is provided.
In the paragraph, the output section for transmitting the rotational force output from the motor main body to the drive target is the terminal built-in section.

The output section is suitable as a terminal built-in section. According to an eighth aspect of the present invention, in the seventh aspect, the driving device motor reciprocally drives a regulator constituting a power window device together with the output section.

A motor of a power window device, which is strongly required to be downsized, is suitable as an object to which the present invention is applied.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is embodied in a power window device will be described below with reference to FIGS.

The motor body 21 shown in FIGS. 1A and 2A is connected to the output section 22 by tightening a screw 23. The housing 24 of the motor body 21 is directly connected to the housing 25 of the output section 22. That is, the annular joint end surface 241 of the housing 24 on the motor body 21 side shown in FIG.
And are joined all around.

The internal structure of the output section 22 is the same as that of FIG. 11, and when the motor body 21 and the output section 22 are directly connected, the rotating shaft 211 of the motor body 21 is connected to the worm 26 (FIG. 3). Shown in the figure). Motor body 2
The rotation force on the first side is transmitted to a rotation shaft 211, a worm 26, a worm wheel (not shown), an output shaft 27, and a sector gear (not shown) constituting a regulator via a drive gear 28 fixed to the output shaft 27. Reportedly.

A brush holder 29 is provided in the surrounding area of the joint end surface 241 of the housing 24. The brush holder 29 supports a pair of brushes (not shown). When the motor body 21 and the output unit 22 are directly coupled, the pair of brushes contact a commutator (not shown) on the rotating shaft 211.

As shown in FIG. 3, a mounting recess 252 is formed in the surrounding area of the joint end face 251 of the housing 25. The holder 31 made of synthetic resin is fitted into the mounting recess 252. As shown in FIG.
Is a first part connected to the substrate part 32 and one end of the substrate part 32.
, And a second holding portion 34 connected to the other end of the substrate portion 32. An insertion hole 321 is formed in the substrate part 32. The rotating shaft 211 is passed through the insertion hole 321.

The first holding portion 33 includes a first arm 35,
A second arm 36 that is bent and inverted from the tip of the first arm 35
Consists of An arrangement hole 351 is formed in the first arm 35. A guide slope 3 is provided at the base end of the first arm 35.
52 are formed. A guide slope 363 is formed at the tip of the second arm 36. As shown in FIG. 1B, a plurality of pressing pieces 361 and a plurality of positioning pieces 362 are formed on the second arm 36. Each holding piece 36
An inclined surface 364 is formed on the outer surface of the second arm 36 so as to gradually separate from the first arm 35 as going from the base end side to the distal end side of the second arm 36. In addition, a holding protrusion 365 is formed on the inner surface of each holding piece 361. As shown in FIG. 5, a pair of Hall elements 39, 4
The sensor substrate 41 having 0 (the Hall element 40 is shown in FIG. 4) is mounted. The hall elements 39 and 40 are arranged holes 35.
1 protrudes inside the first arm 35. The sensor board 41 is inserted from between the guide slopes 352 and 363.

The second holding section 34 includes an inner arm 37 and an outer arm 38. A guide slope 383 is formed at the tip of the outer arm 38. As shown in FIG. 2B, a pressing piece 381 and a positioning piece 382 are formed on the outer arm 38. An inclined surface 384 is formed on the outer surface of the holding piece 381, and is gradually separated from the inner arm 37 as going from the distal end to the proximal end of the outer arm 38. In addition, a holding projection 385 is formed on the inner surface of the holding piece 381. As shown in FIG. 5, a circuit breaker 42 is mounted on the second holding unit 34. The circuit breaker 42 is inserted from between the guide slope 383 and the inner arm 37. The circuit breaker 42 includes a bimetal 421 and a connector 42.
2 is a means for preventing burning. The bimetal 421 turns on and off electrical connection between a pair of conductors (not shown) in the circuit breaker 42.

FIG. 4 shows a state where the holding body 31 on which the sensor board 41 and the circuit breaker 42 are mounted is fitted into the mounting recess 252. One of the pair of brushes is connected to a connector portion 30 which becomes a part of the housing 24 via a wiring (not shown).
Is electrically connected to one of the power supply terminals 48. In a state where the holding body 31 to which the circuit breaker 42 is mounted is fitted into the mounting concave portion 252, the other of the pair of brushes is a wiring (not shown), the pair of conductors, the connection between the connector 422 and the connector 43 of the housing 25, It is electrically connected to the other power supply terminal 48 in the connector portion 30 which is a part of the housing 24 via a wiring (not shown). Motor body 21
The power is supplied to the power supply via the power supply terminal 48 in the connector section 30, the brush, and the commutator. The circuit breaker 42 cuts off power supply to the motor main body 21 when the motor main body 21 is overheated.

A rotating state detecting magnet 44 is mounted on the rotating shaft 211 of the motor body 21. When the holding body 31 with the sensor board 41 mounted thereon is fitted into the mounting recess 252 and the motor body 21 and the output section 22 are connected, the Hall elements 39 and 40 are located around the rotation state detecting magnet 44. Hall elements 39, 40
Detects a change in the magnetic field around the rotation state detecting magnet 44 accompanying the rotation of the rotating shaft 211, and the sensor substrate 41 outputs detection information obtained from the Hall elements 39 and 40 as a detection voltage. The use of the pair of Hall elements 39 and 40 is for detecting the rotation direction of the motor body 21.

In the connector section 30, four rotational state detecting electric connection terminals 45 are provided.
The four rotational state detecting electrical connection terminals 46 are provided in the surrounding area of the annular joint end surface 251. The rotation state detection electric connection terminal 45 and the rotation state detection electric connection terminal 46 are connected one-to-one via wiring (not shown) in the housing 25. Two of the four rotational state detecting electrical connection terminals 46 are for power supply, and the other two are for outputting the detected voltage to an external motor control device.

As shown in FIGS. 6 and 7A, when the holding body 31 is fitted into the mounting recess 252 of the housing 25 from the state of FIG. 5, the positioning pieces 362, 382
Is in contact with the positioning concave portion 253 of the mounting concave portion 252, and the rotation state detecting electric connection terminal 46 is disposed between the sensor substrate 41 and the pressing piece 361. Each rotation state detecting electrical connection terminal 46 disposed between the sensor substrate 41 and the holding piece 361
And one electrical connection terminal 411 (only one is shown in the figure).

When the motor body 21 is directly connected to the output unit 22 from the state shown in FIG. 7A, as shown in FIG.
The inner wall surface 242 of the housing 24 of the motor body 21 contacts the inclined surfaces 364 and 384 of the holding pieces 361 and 381. Due to this contact action, the holding piece 361 is moved to the sensor substrate 4.
The pressing protrusion 365 presses the rotation-state detecting electric connection terminal 46 against the electric connection terminal 411 by being pressed to the first side and elastically deformed. By this pressing action, the rotation state detecting electric connection terminal 46 and the electric connection terminal 411 are electrically connected, and the sensor board 41 is firmly held by the first holding portion 33. Further, the holding piece 381 is formed by the contact action.
Is pressed by the bimetal 421 and elastically deforms, and the pressing protrusion 385 presses the bimetal 421 against the inner arm 37. By this pressing action, the circuit breaker 42 is firmly held by the second holding portion 34.

In the first embodiment, the following effects can be obtained. (1-1) Joint end surface 241 of housing 24 on motor body 21 side and joint end surface 2 of housing 25 on output unit 22 side
51, that is, when the motor body 21 and the output section 22 are directly connected, the electrical connection terminal 46 for rotation state detection and the electrical connection terminal 411 are electrically connected to each other by the elastic deformation of the holding body 31 serving as holding means. Connect securely. Reliable electrical connection between the rotation state detecting electrical connection terminal 46 and the electrical connection terminal 411 is easily achieved by tightening the screw 23 to the housing 25 of the output section 22.

(1-2) If the motor body 21 and the output section 22 are directly connected, the sensor board 41, which is an electric device, is resiliently deformed by the holding body 31 so that the housings 24, 25 can be connected.
Is securely held by the holding body 31.

(1-3) Housing 24 of motor body 21
And the output section 2 which is a terminal built-in section.
The joint between the second housing 25 and the annular joint end surface 251 directly couples the motor body 21 and the output section 22. The direct connection between the housings 24, 25
It is easy to ensure the sealing performance between 25.

(1-4) The holding piece 361 is attached to the motor body 2
In a non-interference state with the housing 24, the rotation state detecting electric connection terminal 46 on the output unit 22 side, which is a terminal built-in unit, and the electric connection terminal 411 on the sensor board 41 side, which is an electric device.
Are not electrically connected to Pressing piece 361
In the state of interference with the housing 24 of the motor main body 21, the electric connection terminal 46 on the output unit 22 side is electrically connected to the electric connection terminal 411 on the sensor board 41 side. The rotation state detecting electrical connection terminal 46 on the output unit 22 side and the electrical connection terminal 411 on the sensor board 41 side
Is reliably connected by the elastic deformation of the pressing piece 361 serving as the electric connection means. The configuration in which the electrical connection terminal 46 for rotation state detection and the electrical connection terminal 411 are electrically connected by the elastic deformation of the holding piece 361 is simple.

(1-5) The integral formation of the holder 31 with synthetic resin facilitates the manufacture of the holder 31. (1-6) Even when the pressing piece 361 is urged with a pressing force exceeding a pressing force necessary for reliable electric connection between the rotation state detecting electric connection terminal 46 and the electric connection terminal 411, the first arm is also provided. 35 and the substrate portion 32 are elastically deformed to absorb the excessive pressing force. If the first arm 35 and the substrate 32 are not elastically deformed, the excessive pressing force cannot be absorbed, and the holder 31 is damaged. In order to avoid this damage, it is necessary to increase the mounting accuracy between the housing 24 of the motor body 21 and the holder 31. However, the integral formation of the holding body 31 made of a synthetic resin does not require high assembling accuracy between the housing 24 of the motor body 21 and the holding body 31, and the manufacture of the holding body 31 becomes easy.

(1-7) The output section 22 is suitable as a terminal built-in section. (1-8) There is a strong demand for miniaturization of power window devices mounted on vehicle doors. A motor of a power window device, which is required to be miniaturized, is suitable as an application target of the present invention.

Next, a second embodiment shown in FIGS. 8 and 9 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the brush holder 47
Are formed integrally with the holder 31. In the illustrated example, the sensor substrate 41 and the circuit breaker 42 are mounted on the holder 31. Such an integrated configuration facilitates the assembly of the brush holder 47.

In the present invention, the following embodiments are also possible. (1) A plurality of pairs of rotational state detecting electric connection terminals 46 and electric connection terminals 411 are electrically connected by a single pressing piece. (2) The rotation state detection electric connection terminal 46 and the electric connection terminal 411 are generated by interference with the housing 25 on the output unit 22 side.
Use a holder that electrically connects to. (3) The motor body 21 and the output unit 22 are indirectly connected via the holding body. For example, the entire circumference of the joint end face 241 on the housing 24 side and the joint end face 251 on the housing 25 side
(For example, portions corresponding to the positioning pieces 362 and 382 in the first embodiment) are interposed between the holder and the entire circumference of the holder. (4) The holder is integrally formed of an elastic metal. (5) The holding pieces are formed separately from the holding pieces 361 and 381, and the holding pieces are separately attached to the holding body so as not to fall off. (6) The circuit breaker 42 without the connector 422 is mounted on the holder 31 as an electric device, and the electrical connection terminal on the circuit breaker 42 side and the electrical connection terminal on the output unit 22 side are electrically connected by elastic deformation of the holder 31. Configuration. (7) The present invention is applied to a motor of a driving device other than the power window device, for example, a motor of a sunroof device.

[0039]

As described above in detail, according to the present invention, the electric connection terminal on the terminal built-in portion side and the electric connection terminal on the electric device side are caused by interference with the housing of the motor body or the housing of the terminal built-in portion. Since the electrical connection is made by press contact, there is an excellent effect that the electrical connection operation can be easily performed without increasing the size of the motor for the driving device.

[Brief description of the drawings]

FIG. 1 shows a first embodiment, in which (a) is an exploded side view. (B) is an enlarged side view of a main part.

FIG. 2 (a) is another exploded side view. (B) is an enlarged other side view of a main part.

FIG. 3 is an exploded front view of a main part showing a state before a holding body 31 is fitted into the output unit 22;

FIG. 4 is an essential part front view showing a state in which a holding body 31 is fitted into the output unit 22;

FIG. 5 is an exploded cross-sectional view of a main part showing a state before the holding body 31 is fitted into the output unit 22.

FIG. 6 is a partially cutaway side view showing a state before the motor main body 21 and the output unit 22 are connected to each other and the holding body 31 is fitted into the output unit 22;

FIG. 7A is a sectional view of a main part corresponding to FIG. 6; FIG. 3B is a cross-sectional view of a main part showing a coupling state between the motor main body 21 and the output unit 22.

FIG. 8 is a front view showing a holder according to the second embodiment.

FIG. 9 is a bottom view of the holder.

FIG. 10 is a perspective view incorporating a main part enlarged perspective view showing a conventional apparatus.

FIG. 11 is a sectional view of the output unit 10;

[Explanation of symbols]

21: Motor body. Reference numeral 22 denotes an output unit serving as a terminal built-in unit. 2
4 ... Housing on the motor body side. 25: Housing on the output side. 31 ... A holding body serving as holding means. 361: A holding piece serving as an electric connection means. 41: a sensor substrate serving as an electric device. 411: electrical connection terminals on the electrical device side. Reference numeral 46 denotes a rotation state detection electric connection terminal which is an electric connection terminal on the terminal built-in portion side. 47 ... brush holder.

Claims (8)

[Claims] 1. A motor body and a terminal built-in portion having a built-in electric connection terminal, wherein a housing of the motor body and a housing of the terminal built-in portion are directly or indirectly connected to each other to form the motor body and the terminal built-in portion. In a motor for a driving device in which a unit is integrated, a holding means for holding an electric device is arranged between a housing of the motor main body and a housing of the terminal built-in part, and the holding means is provided with a housing of the motor main body. In the state of direct or indirect connection with the housing of the terminal built-in portion,
An electric connection unit is provided that presses and electrically connects the electric connection terminal on the terminal built-in portion side and the electric connection terminal on the electric device side by interference with the housing of the motor body or the housing of the terminal built-in portion. Motor for the drive. 2. The motor for a driving device according to claim 1, wherein the housing of the motor main body and the housing of the terminal built-in portion are directly connected to each other to house the holding means. 3. The electric connection means elastically deforms in a state where the housing of the motor main body and the housing of the terminal built-in portion are directly or indirectly coupled to each other, and the electric connection terminal on the side of the terminal built-in portion and the electric device. 3. An electric connection terminal according to claim 1, wherein said electric connection terminal is electrically connected to said electric connection terminal by press-contact.
A motor for a drive device according to item 9. 4. The electric connection means is a pressing piece which is elastically deformed by interference with a housing of the motor main body or a housing of the terminal built-in section, and the pressing piece is a housing of the motor main body or the terminal built-in section. In a non-interference state with the housing, the electric connection terminal on the terminal built-in portion side and the electric connection terminal on the electric device side are not electrically connected to each other, and the holding piece is the housing of the motor main body or the housing. 4. The motor for a drive device according to claim 3, wherein in a state where the terminal built-in portion interferes with the housing, the electric connection terminal on the terminal built-in portion side is electrically connected to the electric connection terminal on the electric device side. 5. The drive device according to claim 3, wherein said holding means is made of a synthetic resin, and said electric connection means is integrally formed as a part of said holding means. motor. 6. The motor for a driving device according to claim 1, wherein said holding means includes a brush holder. 7. The motor for a driving device according to claim 1, wherein the terminal built-in section is an output section for transmitting a rotational force output from the motor main body to a drive target. 8. The motor for a driving device according to claim 7, wherein the motor for the driving device reciprocally drives a regulator constituting a power window device together with the output section.