JP2590753Y2 - Rotary electric machine connection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electric machine connecting device for electrically connecting a rotary electric machine to an external circuit.

[0002]

2. Description of the Related Art In a rotating electric machine such as a motor or a generator, for example, a motor, a power supply line for supplying power to a driving coil, a rotation position signal line, and the like must be electrically connected to an external circuit. FIG. 12 shows an example of a conventional connection device for a rotating electric machine. In FIG. 12 , the rotating electric machine 1 is fixed to the base 17 by fixing the flange of the frame 3 to the base 17. A flexible circuit board 50 is drawn out of the base 3 of the rotating electric machine 1. The flexible circuit board 50 has a circuit pattern connected to an armature winding, a magnetic sensor for detecting a rotational position, and the like inside the rotary electric machine 1, and each circuit pattern is connected to a male connector at the tip of the flexible circuit board 50. Have been. A circuit board 52 is arranged in parallel with the base 17,
The male connector of the flexible circuit board 50 is inserted and electrically connected to the female connector 54 fixed to the circuit board 52. The flexible circuit board 50 extends in parallel along the circuit board 52. Japanese Utility Model Application Laid-Open No. 3-200 is similar to such a connection device for a rotating electric machine.
No. 94 publication.

[0003]

[Problems to be Solved by the Invention] In recent years, as the rotating electric machine itself and devices using the rotating electric machine have been miniaturized,
The length of the flexible circuit board 50 drawn from the rotating electric machine 1 as shown in the above-mentioned conventional example is short. Therefore, it is difficult to perform the work of arranging the flexible circuit board 50 and the work of inserting the male connector of the flexible circuit board 50 into the female connector 54 of the circuit board 52, it is difficult to automate the connection, and it is difficult to assemble the rotating electric machine. There was a problem.

The present invention has been made to solve such a problem, and it is possible to eliminate the need for male and female connectors to connect the rotating electric machine to circuit means provided outside thereof, thereby enabling automatic connection. Accordingly, an object of the present invention is to provide a connecting device for a rotating electric machine that can facilitate assembly of the rotating electric machine.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
The present invention provides an outer housing having a stator core inside the rotor.
Tarrotor type rotating electric machine and circuit
In a connection device for a rotating electric machine that electrically connects a stage and
Interconnection means being constituted by a flexible circuit board, rotary electric
It is arranged from the radial inside to the outside of the machine, and
One end of the wiring means is connected to a wire drawn from the rotating electric machine
Connected, a first terminal is formed at the other end of the wiring means
At the same time, the other end of this wiring means is fixed to the rotating electrical machine frame.
It is a constant, characterized in that so as to connect the first terminal and abuts against a second terminal connected to said circuit means
And

[0006]

When the first terminal and the second terminal are brought into contact with each other, the inside of the rotating electric machine and the external circuit are electrically connected to each other through the wires drawn out from the rotating electric machine, the wiring means, the first terminal and the second terminal. Connected to.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a connecting device for a rotating electric machine according to the present invention; First, the overall configuration of the rotating electric machine will be schematically described with reference to FIG. In FIG. 5, the rotating electric machine 1 includes a frame 3 having a cylindrical shape with a short outer shape and having a cylindrical bearing holder portion 3f on the inner peripheral side. A bearing 13 is fitted on the inner peripheral portion of the bearing holder 3f, and the rotor 12 is rotatably supported by the bearing 13. A stator core 14 is fitted and fixed to an outer peripheral portion of the bearing holder 3f. The stator core 14 has a plurality of salient poles, and an armature coil 15 is wound around each salient pole. The distal end surface of the salient pole of the stator core 14 faces the inner peripheral surface of the ring-shaped magnet 19 fixed to the outer peripheral portion of the rotor 12 at an appropriate interval.

1 to 6, a flat surface 3d is formed in a part of the outer periphery of the frame 3 of the rotary electric machine 1 by forming a notch 3c along a straight line. The notch near the outer peripheral edge is cut out following the notch 3c to form an opening.
And window hole 3b of are formed. A wiring means 6 formed of a flexible circuit board is provided on the inner bottom of the frame 3. The wiring means 6 is substantially ring-shaped as shown in FIG.
a. The projecting portion 6a is provided in the window hole 3 of the frame 3.
b and the flat surface 3d of the frame 3
It is bent so as to follow. The first terminals 4 having an appropriate number of wiring patterns are formed on the protruding portions 6 a of the wiring means 6. A wire 1 drawn from each end of the armature coil 15 is provided at an inner end of each first terminal 4.
6 are connected by solder 8. Each of the first terminals 4 rises along the flat surface 3d by bending the protruding portion 6a of the wiring means 6 along the flat surface 3d of the frame 3 as described above.

As shown in FIGS. 1 and 6, the rotating electric machine 1 is fixed to the base 17 by fixing the flange of the frame 3 to the base 17. Outside the rotating electric machine 1, a circuit means 2 composed of a wiring board is provided below the base 17 in parallel with the base 17. A hole is formed in the center of the base 17 and the circuit means 2, and the frame 3 of the rotary electric machine 1 is fitted into this hole, but only the right half is drawn in FIG. A plurality of second terminals 5 are attached to the inner peripheral edge of the circuit means 2 at positions corresponding to the flat surface 3d of the frame 3. Each of the second terminals 5 is bent in a substantially C-shape, and one end 5 b of the second terminal 5 is press-fitted into the circuit means 2 so that the second terminal 5 is attached to the circuit means 2. The circuit means 2 is provided with a number of wiring patterns 9 corresponding to the number of the second terminals 5. The one end 5b of each second terminal 5 penetrates the circuit means 2 and one end of each wiring pattern 9, and the second terminal 5 and the corresponding wiring pattern 9 are electrically connected by the solder 18. Connected. Each wiring pattern 9 is connected to a power supply circuit (not shown) configured on the circuit means 2. The other end 5a of each second terminal 5 is bent, and the first terminal 4 rising along the flat surface 3d of the frame 3 is bent at the other end 5a of each second terminal 5. The curved outer surfaces are opposed to each other. When the frame 3 of the rotating electric machine 1 is inserted into the center hole of the circuit means 2, the other end 5a of each second terminal 5
The corresponding first terminals 4 are brought into contact with each other by the elasticity of the terminal 5.

If the rotating electric machine described above is a motor,
When the other end 5a of each second terminal 5 abuts on the corresponding first terminal 4 by the elasticity of the terminal 5, the power supply circuit formed on the circuit means 2 starts to change the wiring pattern 9, Power is supplied to the coil 15 via the second terminal 5, the first terminal 4, and the wire 16, and the rotor 12 is driven to rotate.

According to the embodiment described above, the rotating electric machine 1
Is connected to the wiring means 6, and the wiring means 6 is connected to the first terminal 4 fixed to the frame 3 of the rotary electric machine 1, and provided outside the first terminal 4 and the outside. Terminal 5 connected to the connected circuit means 2
Is brought into contact with and connected,
Just by arranging the circuit means 2 at a predetermined position with respect to the rotating electric machine 1, the rotating electric machine 1 and the external circuit means 2 are electrically connected, and this is inserted using a connector as in the conventional case. Because there is no need, connection can be automated.
Furthermore, since the wiring means 6 does not protrude from the rotating electric machine 1, there is an advantage that the packaging of the rotating electric machine 1 can be reduced and the transportation cost can be reduced.

In the above embodiment, the frame 3 of the rotating electric machine 1 is fitted into the hole at the center of the circuit means 2, but as shown in the embodiment shown in FIG. The circuit means 45 may be fixed with an insulating member 49 interposed therebetween. In FIG. 7, the circuit means 4
From 5, the second terminal 47 rises to the side of the frame 3. The second terminal 47 is bent in the same manner as the second terminal 5 of the above-described embodiment, and the bent front end comes into contact with the first terminal 4 provided on the side surface of the frame 3 so that the first terminal 4 And the second terminal 5 are electrically connected. The second terminal 47 is connected to the circuit means 4 by solder 48.
5 is connected to the wiring pattern 46 provided on the wiring pattern 5.

The connection between the first terminal and the second terminal does not necessarily have to be made on the side surface of the frame 3 of the rotating electric machine 1, but may be made on the bottom surface of the frame 3, for example. FIG. 8 shows an example of such. 8, reference numeral 1 denotes a rotating electric machine, 3 denotes a frame, 3a denotes a bottom surface of the frame, 3b
Is a window hole, 15 is a coil, 16 is a wire at a coil end, 1
Reference numerals 7 denote bases, which are configured in the same manner as in the above-described embodiment. A part of the wiring means 21 disposed on the inner bottom of the frame 3 is exposed through the window 3b, and the exposed part has a first terminal (not shown).
Is formed, and the wire 16 is electrically connected to the first terminal by solder 28.

Outside the rotating electric machine 1, a circuit means 22 formed of a circuit board is provided below the frame 3 on the base 1.
7 are arranged in parallel. A guide tube 23 is fixed on the upper surface side of the circuit means 22 in a direction orthogonal to the upper surface, and a pin-shaped second terminal 24 is slidably inserted into the guide tube 23. The second terminal 24 is connected to the guide cylinder 2 by a conductive coil spring 25 inserted into the guide cylinder 23.
3 is urged in a direction protruding from the upper end. A wiring pattern 26 is formed on the lower surface side of the circuit means 22,
A lead portion 25a integrally extending from a lower end of the coil spring 25 passes through a hole of the circuit means 22 and is connected to one end of the wiring pattern 26 by solder 27.

According to the embodiment shown in FIG. 8, only by positioning the rotating electric machine 1 and the circuit means 22 relative to each other, the second terminal is connected to the first terminal (not shown) formed on the wiring means 21. The terminal 24 comes into contact with the elastic force of the coil spring 25. When the rotating electric machine 1 is a motor, the first terminal and the second terminal 24 come into contact with each other, so that the power supply circuit formed on the circuit means 22 can be connected to the wiring pattern 26 and the spring 25.
The coil 15 is supplied with power through the lead portion 25a, the main body of the spring 25, the second terminal 24, the first terminal, and the wire 16.
The rotor 12 is driven to rotate.

Also in this embodiment, the first terminal and the second terminal 24 contact each other only by determining the relative positions of the rotating electric machine 1 and the circuit means 22, and the rotating electric machine 1 is connected to the external circuit. Are electrically connected to each other, so that the same operation and effect as in the above-described embodiment can be obtained.

FIG. 9 is similar to the embodiment shown in FIG.
The connection between the first terminal and the second terminal is performed on the bottom surface side of the frame 3, but the configuration of the second terminal is different. 9, the main body side of the rotary electric machine 1 is configured in the same manner as the example of FIG. On the other hand, the second terminal 56 rises toward the first terminal 21 from the circuit means 22, and the bent end portion of the second terminal 56 causes the first terminal 21 to be bent by the elastic force.
And is electrically connected. The base 56 a of the second terminal 56 is bent after penetrating the circuit means 22 and connected to the circuit pattern 26 formed on the circuit means 22 by solder 27.

[0018]

In each of the embodiments described above, the wire drawn from the rotating electric machine is described as a wire drawn from the coil. However, the present invention is not limited to the wire drawn from the coil, but may be arranged inside the rotating electric machine. It may be a wire connected to an electric component other than the provided coil. FIG. 10 shows such a modified embodiment, in which a wire 39 drawn from a rotor rotational position detecting sensor 38 is connected to an external circuit. In FIG. 10 , a sensor 38 including a Hall element or a magnetoresistive element is fixed to the inner bottom of the frame 3 and is arranged to detect a leakage magnetic flux of the rotor magnet 19. The frame 3 is provided with a wiring means 36 made of a flexible circuit board with a configuration substantially similar to that of the embodiment described with reference to FIGS. The protruding portion 36a of the wiring means 36 is exposed from the cutout 3c of the frame 3 and is bent along the outer flat surface 3d of the frame 3 and is fixed to the flat surface 3d. A first terminal is formed on the wiring board 36 by a wiring pattern (not shown), and the wire 39 is electrically connected to one end of the first terminal by solder 40.

In the embodiment shown in FIG. 10 , similarly to the embodiment shown in FIGS. 1 to 6, when the circuit means provided outside the rotating electric machine 1 is arranged at a predetermined position, it is connected to the circuit means. The second terminal formed on the wiring board 36 has the first terminal
And the first terminal and the second terminal are electrically connected to each other, and the coil and other electric components inside the rotating electric machine 1 are electrically connected to the external circuit. Therefore, according to this embodiment, the same operation and effect as those of the above embodiments can be obtained.

In the embodiment shown in FIG. 10 , a decorative plate 43 is attached to the bottom surface 3a of the frame 3 to cover the notch 3c, and the connection between the wire 39 and the wiring means 36 by the solder 40 is covered. . In the embodiment shown in FIGS. 1 to 6, a decorative plate similar to the decorative plate 43 shown in FIG. 9 can be attached.

When a sensor or the like other than the coil inside the rotating electric machine is connected to an external circuit, a configuration as shown in FIG. 11 may be adopted. In FIG. 11 , a flat surface 3d is formed on the outer peripheral portion of the frame 3 of the rotating electric machine in the same manner as in the embodiment shown in FIGS.
A window hole 3b following d is formed. A wiring means 60 is fixed to the frame 3 so as to cover the window hole 3b. The wiring means 60 is also bent and fixed along the flat surface 3d. The wiring means 60 includes a conductor 61 formed in a predetermined wiring pattern, and insulating layers 62 and 63 sandwiching the conductor 61 from both surfaces. The insulating layer 62 facing the inner side of the frame 3 is cut at four places, and solders 67, 67 are applied on the surface of the conductor 61 exposed from the cut portion. A sensor 65 is fixed on the insulating layer 62 between the four cutouts.
The wires 66, 66 drawn out of the solder 67, 67
Connected to the conductor 61. Most of the portion of the insulating layer 63 of the wiring means 60 corresponding to the flat surface 3d of the frame 3 is cut off, and most of the conductor portion of the conductor 61 corresponding to the flat surface 3d is exposed, and the first terminal 61a is exposed.
It has become.

In the embodiment shown in FIG. 11 , FIGS.
The second terminal 5 of the embodiment shown in FIG.
By using the terminal 47 or the like, the rotating electric machine and the external circuit can be electrically connected.

[0024]

According to the present invention, the wire drawn from the rotating electric machine is connected to the wiring means, and the wiring means is connected to the first terminal fixed to the frame of the rotating electric machine, and is connected to the first terminal. And the second terminal connected to the externally provided circuit means is brought into contact with and connected to the rotary electric machine. And the external circuit means are electrically connected, and it is not necessary to insert a connector as in the related art, so that the connection can be automated and the rotating electric machine can be easily assembled. Further, since the wiring means made of a flexible circuit board is disposed so as to extend from the radially inner side to the outer side of the rotating electric machine, and the wire drawn from the rotating electric machine is connected to the external circuit via the wiring means, The contact between the opening of the frame of the rotating electric machine and the electric circuit, and the disconnection due to this contact can be prevented. In particular, under the recent trend of ultra-thin rotating electrical machines,
When trying to pass the wire from the opening , the wire easily hits the edge of the opening , and short-circuit or disconnection of the wire is likely to occur, but by interposing wiring means consisting of a flexible circuit board at the opening position as in the present invention. Thus, the above-described short circuit and disconnection can be prevented. Further, the use of the flexible circuit board has an advantage that the trouble of connecting the terminal so as not to contact the edge of the opening is reduced as compared with the case of using a wire.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of a connection device for a rotating electric machine according to the present invention, which is turned upside down.

FIG. 2 is a bottom view of the rotary electric machine main body to which the embodiment is applied.

FIG. 3 is a bottom view showing the wiring means in the embodiment.

FIG. 4 is a side view of a rotating electric machine main body to which the embodiment is applied.

FIG. 5 is a front sectional view of the rotating electric machine main body.

FIG. 6 is a partial cross-sectional front view showing a main part of the embodiment.

FIG. 7 is a partial cross-sectional front view showing another embodiment of the connection device for the rotating electric machine according to the present invention.

FIG. 8 is a partial cross-sectional front view showing still another embodiment of the connection device for a rotating electric machine according to the present invention.

FIG. 9 is a partial cross-sectional front view showing still another embodiment of the connection device for a rotating electric machine according to the present invention.

FIG. 10 shows a further connection device for a rotating electric machine according to the present invention.
The front sectional view showing another example.

FIG. 11 is a perspective view of a connection device for a rotating electric machine according to the present invention;
FIG. 7 is a front sectional view showing a main part of another embodiment.

FIG. 12 is a partially cutaway view showing an example of a conventional connection device for a rotating electric machine .
FIG.

[Explanation of symbols]

 Reference Signs List 1 rotating electric machine 2 circuit means 3 frame 4 first terminal 5 second terminal 6 wiring means 16 wire

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-190544 (JP, A) JP-A-61-147762 (JP, A) Fully open 63-117266 (JP, U) Really open 40172 (JP, U) JP 3-11356 (JP, U) JP 61-114957 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02K 5/22 H02K 3 / 50 H02K 21/22

Claims (1)

(57) [Scope of request for utility model registration] 1. A connecting device for a rotary electric machine for electrically connecting an outer rotor type rotary electric machine having a stator core inside a rotor and a circuit means provided outside the same, a wiring means comprising a flexible circuit board. But times
Disposed from the radially inner side to the outer side of the rotating electric machine,
One end of the wiring means is a wire drawn from the rotating electric machine
And a first terminal is formed at the other end of the wiring means.
And the other end of this wiring means is the frame of the rotating electrical machine
And a connecting device for the rotating electric machine, wherein the first terminal and the second terminal connected to the circuit means are connected by contact with each other .