JPH0591167U - Rotating electric machine connection device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is not necessary to use male and female connectors to connect the rotating electrical machine to the external circuit, and automation of the connection is possible, and it is necessary to pass the flexible circuit board through the frame of the rotating electrical machine or the hole of the circuit board. Also, there is provided a rotating electric machine connecting device capable of facilitating assembly of the rotating electric machine. A wire drawn from a rotating electric machine 1 is connected to a wiring means 6, the wiring means 6 is connected to a first terminal 4 fixed to a frame 3 of the rotating electric machine 1, and the first terminal 4 and a circuit means are connected. The 2nd terminal 5 connected to 2 was made to contact, and the 1st terminal 4 and the 2nd terminal 5 were connected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary electric machine connecting device for electrically connecting a rotary electric machine to an external circuit.

[0002]

[Prior Art]

 In a rotating electric machine such as a motor or a generator, for example, a motor, it is necessary to electrically connect a power supply line for supplying power to a drive coil, a rotation position signal line, etc. to an external circuit. FIG. 13 shows an example of a conventional connecting device for a general rotary electric machine. In FIG. 13, the rotary 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 pulled out from the base 3 of the rotating electric machine 1. The flexible circuit board 50 has a circuit pattern connected to the armature winding, the magnetic sensor for detecting the rotational position, etc. inside the rotating electric machine 1, and each circuit pattern corresponds to the male connector at the tip of the flexible circuit board 50. It is connected. A circuit board 52 is arranged in parallel with the base 17, and a male connector of the flexible circuit board 50 is inserted and electrically connected to a female connector 54 fixed to the circuit board 52. The flexible circuit board 50 extends in parallel along the circuit board 52. An example of such a connecting device for a rotating electric machine is described in Japanese Utility Model Laid-Open No. 3-00094.

[0003]

[Problems to be solved by the device]

 As the rotating electric machine itself and devices using the rotating electric machine have become smaller and smaller in recent years, the length of the flexible circuit board 50 drawn from the rotating electric machine 1 as shown in the above-mentioned conventional example has become shorter. Therefore, it is difficult to dispose the flexible circuit board 50 and to insert the male connector of the flexible circuit board 50 into the female connector 54 of the circuit board 52, and it is difficult to automate the connection. There was a problem that it was difficult.

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

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention connects a wire drawn from a rotating electric machine to a wiring means, connects the wiring means to a first terminal fixed to a frame of the rotating electric machine, and The terminal and the second terminal connected to the circuit means are brought into contact with each other to be connected.

[0006]

[Action]

 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 through the wire drawn from the rotating electric machine, the wiring means, the first terminal and the second terminal. It

[0007]

【Example】

 An embodiment of a connecting device for a rotary electric machine according to the present invention will be described below with reference to the drawings. First, the overall configuration of the rotary electric machine will be schematically described with reference to FIG. In FIG. 5, the rotary electric machine 1 includes a frame 3 having a short outer shape and 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 portion 3f, and the rotor 12 is rotatably supported by the bearing 13. The stator core 14 is fitted and fixed to the outer peripheral portion of the bearing holder portion 3f. The stator core 14 has a plurality of salient poles, and an armature coil 15 is wound around each salient pole. The tip surfaces of the salient poles of the stator core 14 face the inner peripheral surface of the ring-shaped magnet 19 fixed to the outer peripheral portion of the rotor 12 at an appropriate interval.

In FIGS. 1 to 6, a flat surface 3 d is formed by forming a cutout portion 3 c along a straight line on a part of the outer periphery of the frame 3 of the rotary electric machine 1, and the frame 3 is formed. A window hole 3b is formed in the bottom surface 3a by cutting out a portion near the outer peripheral edge thereof following the cutout portion 3c. Wiring means 6 made of a flexible circuit board is arranged on the inner bottom of the frame 3. As shown in FIG. 3, the wiring means 6 has a substantially ring shape, and a part of the wiring means 6 is a protruding portion 6a protruding in a tongue shape in the outer peripheral direction. The protrusion 6a is exposed from the window hole 3b of the frame 3 and is bent along the flat surface 3d of the frame 3. A first terminal 4 having an appropriate number of wiring patterns is formed on the protruding portion 6a of the wiring means 6. A wire 16 drawn from each end of the armature coil 15 is connected to the inner end of each first terminal 4 by solder 8. By bending the protruding portion 6a of the wiring means 6 along the flat surface 3d of the frame 3 as described above, each first terminal 4 stands up along the flat surface 3d.

As shown in FIGS. 1 and 6, the rotary electric machine 1 is fixed to the base 17 by fixing the flange of the frame 3 to the base 17. Outside the rotary electric machine 1, a circuit means 2 composed of a wiring board is arranged 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 so that the frame 3 of the rotating electric machine 1 can be fitted into this hole, but only the right half is shown 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 second terminal 5 is bent into a substantially C-shape, and one end 5b thereof 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 formed with the number of wiring patterns 9 corresponding to the number of the second terminals 5. The above-mentioned one end portion 5b of each second terminal 5 penetrates the circuit means 2 and also penetrates one end portion of each wiring pattern 9, and each second terminal 5 and the wiring pattern 9 corresponding thereto are soldered. It is electrically connected. Each wiring pattern 9 is connected to a power supply circuit (not shown) formed on the circuit means 2. The other end 5a of each second terminal 5 is bent, and the other end 5a of each second terminal 5 is connected to each first terminal 4 that rises along the flat surface 3d of the frame 3. The outer side of the bend is opposite. When the frame 3 of the rotary electric machine 1 is inserted into the center hole of the circuit means 2, the other end 5a of each second terminal 5 is brought into contact with each corresponding first terminal 4 by the elasticity of the terminal 5. I'm getting in touch with you.

When the rotating electric machine described above is a motor, the other end 5a of each second terminal 5 is brought into contact with the corresponding first terminal 4 by the elastic force of the terminal 5, whereby a circuit step is provided. Power is supplied to the coil 15 from the power feeding circuit configured on the upper part 2 through the wiring pattern 9, the second terminal 5, the first terminal 4, and the wire 16, and the rotor 12 is rotationally driven.

According to the embodiment described above, the wire 16 drawn out from the rotating electric machine 1 is connected to the wiring means 6, and this wiring means 6 is fixed to the frame 3 of the rotating electric machine 1 by the first terminal 4. Since the first terminal 4 and the second terminal 5 connected to the external circuit means 2 are brought into contact with each other and connected, the rotating electric machine 1 On the other hand, the rotary electric machine 1 and the external circuit means 2 are electrically connected only by disposing the circuit means 2 at a predetermined position, and there is no need to insert this using a connector as in the conventional case. Therefore, it is possible to automate the connection. Further, since the wiring means 6 does not project from the rotary electric machine 1, there is an advantage that the packaging of the rotary electric machine 1 can be made small and the transportation cost can be reduced.

In the above embodiment, the frame 3 of the rotary electric machine 1 was fitted into the hole at the center of the circuit means 2. However, as in the embodiment shown in FIG. The circuit means 45 may be fixed to the surface with the insulating member 49 interposed. In FIG. 7, a second terminal 47 stands up from the circuit means 45 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-mentioned embodiment, and the bent tip end contacts the first terminal 4 provided on the side surface of the frame 3 to 4 and the second terminal 5 are electrically connected. The second terminal 47 is connected to the wiring pattern 46 provided on the circuit means 45 by the solder 48.

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 a thing. In FIG. 8, reference numeral 1 is a rotary electric machine, 3 is a frame, 3a is a bottom surface of the frame, 3b is a window hole, 15 is a coil, 16 is a wire at the end of the coil, and 17 is a base. The configuration is the same as that of the above embodiment. A part of the wiring means 21 arranged on the inner bottom portion of the frame 3 is exposed from the window hole 3b, and a first terminal (not shown) is formed in the exposed portion, and The wire 16 is electrically connected to the first terminal by solder 28.

Outside the rotary electric machine 1, a circuit means 22 made of a circuit board is arranged below the frame 3 in parallel with the base 17. A guide cylinder 23 is fixed to 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 cylinder 23. The second terminal 24 is biased by a conductive coil spring 25 inserted in the guide cylinder 23 in a direction projecting from the upper end of the guide cylinder 23. A wiring pattern 26 is formed on the lower surface side of the circuit means 22, and the lead portion 25a integrally extending from the lower end of the coil spring 25 penetrates the hole of the circuit means 22 and then one end portion of the wiring pattern 26. It is connected by solder 27.

According to the embodiment shown in FIG. 8, the rotary electric machine 1 and the circuit means 22 are arranged at predetermined relative positions, and the second terminal is formed on the first terminal (not shown) formed on the wiring means 21. The terminal 24 of the abuts 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 wiring pattern 26, the lead portion 25a of the spring 25, and the spring 25 main body are connected to the power supply circuit formed on the circuit means 22. Power is supplied to the coil 15 through the second terminal 24, the first terminal, and the wire 16, and the rotor 12 is rotationally driven.

Also in the case of this embodiment, the first terminal and the second terminal 24 are brought into contact with each other only by deciding the relative positions of the rotary electric machine 1 and the circuit means 22 and arranging them, and the rotary electric machine 1 and the external Since it is electrically connected to the circuit, the same operational effect as that of the above-described embodiment is obtained.

In FIG. 9, similar to the embodiment shown in FIG. 8 described above, the connection between the first terminal and the second terminal is made on the bottom side of the frame 3, but the configuration of the second terminal is It is different. In FIG. 9, the main body side of the rotary electric machine 1 is configured similarly to the example of FIG. 8. On the other hand, the second terminal 56 rises from the circuit means 22 toward the first terminal 21, and the bent portion of the tip of the second terminal 56 is brought into contact with the first terminal 21 by its elastic force. Connected to each other. The base portion 56a of the second terminal 56 is bent after penetrating the circuit means 22, and is connected to the circuit pattern 26 formed on the circuit means 22 by the solder 27.

FIG. 10 shows still another embodiment in which the first terminal and the second terminal are connected on the bottom surface side of the frame 3. In this embodiment, a long hole 3e is formed on the bottom surface 3a side of the frame 3 made of a conductive material such as iron, and the insulating area 30 made of insulating paint and the insulating area 30 are formed on the side of the long hole 3e. Wiring means 33 including the first terminal 31 formed by conductor printing is formed. A wire 16 drawn out from the inside of the rotary electric machine 1 through the elongated hole 3e is connected to one end of the first terminal 31 formed on the wiring means 33 by solder 32. The first terminals 31 are formed by the number corresponding to the number of the wires 16. By contacting the first terminal 31 with the second terminal 24 in the embodiment shown in FIG. 8 or the second terminal 56 in the embodiment shown in FIG. 9, the rotating electric machine 1 and the external circuit are connected. Can be electrically connected, which provides the same effect as the embodiment shown in FIGS. 7 and 9. The wiring means 33 may be a printed wiring board, and the printed wiring board may be attached to the bottom surface 3a of the frame 3.

In each of the embodiments described above, the wire drawn out from the inside of the rotating electric machine has been described as a wire drawn out from the coil, but the present invention is not limited to the wire drawn out from the coil, but is placed inside the rotating electric machine. It may be a wire connected to an electric component other than the coil. FIG. 11 shows such a modified embodiment, in which the wire 39 drawn from the rotational position detecting sensor 38 of the rotor is connected to an external circuit. In FIG. 11, a sensor 38 including a Hall element or a magnetoresistive element is fixed to the inner bottom portion of the frame 3 and arranged so as to detect the leakage magnetic flux of the rotor magnet 19. Wiring means 36 made of a flexible circuit board is arranged in the frame 3 in a configuration similar to that of the embodiment described with reference to FIGS. 1 to 6. The protruding portion 36a of the wiring means 36 is exposed from the cutout portion 3c of the frame 3 and is bent along the outer flat surface 3d of the frame 3 and 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 case of the embodiment shown in FIG. 11, as in the embodiment shown in FIGS. 1 to 6, when the circuit means provided outside the rotary electric machine 1 is arranged at a predetermined position, it is connected to the circuit means. The second terminal comes into contact with the first terminal formed on the wiring board 36 so that the first terminal and the second terminal are electrically connected, and the coil inside the rotary electric machine 1 and other electric parts It is electrically connected to an external circuit. Therefore, according to this embodiment, the same operation and effect as those of the above-mentioned embodiments can be obtained.

In the embodiment of FIG. 11, the decorative plate 43 is attached to the bottom surface 3 a of the frame 3 to cover the cutout portion 3 c, and the connection portion of the wire 39 and the wiring means 36 by the solder 40 is covered. .. Also 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 other than the coil inside the rotary electric machine is connected to an external circuit, a configuration as shown in FIG. 12 may be adopted. 12, in the frame 3 of the rotating electric machine, a flat surface 3d is provided on the outer peripheral portion, and a window hole 3b is formed on the peripheral portion of the bottom surface 3a, following the flat surface 3d, as in the embodiment shown in FIGS. Are formed. Wiring means 60 is fixed to the frame 3 by closing 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 in which the conductor 61 is sandwiched from both sides. The insulating layer 62 facing the inside of the frame 3 is cut at four places, and solder 67, 67 is laid 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, and wires 66, 66 drawn from the sensor 65 are connected to the conductor 61 by the solders 67, 67. In the insulating layer 63 of the wiring means 60, most of the portion 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 to expose the first terminal 61a. Is becoming

In the embodiment shown in FIG. 12, by using the second terminal 5 of the embodiment shown in FIGS. 1 to 6 and the second terminal 47 of the embodiment shown in FIG. Can be electrically connected.

[0024]

[Effect of the device]

 According to the present invention, the wire drawn from the rotating electric machine is connected to the wiring means, the wiring means is connected to the first terminal fixed to the frame of the rotating electric machine, and the first terminal and the outside are connected to each other. Since the second terminal connected to the provided circuit means is brought into contact with and connected to the second terminal, the rotary electric machine and the external circuit can be simply arranged by arranging the circuit means at a predetermined position with respect to the rotary electric machine. Since it is electrically connected to the means and it is not necessary to insert a connector as in the conventional case, the connection can be automated and the assembly of the rotary electric machine can be facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an embodiment of a connecting device for a rotary electric machine according to the present invention, which is vertically inverted.

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

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

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

FIG. 7 is a partially sectional front view showing another embodiment of the connecting device for a rotating electric machine according to the present invention.

FIG. 8 is a partially sectional front view showing still another embodiment of the connecting device for a rotating electric machine according to the present invention.

FIG. 9 is a partially sectional front view showing still another embodiment of the connecting device for a rotating electric machine according to the present invention.

FIG. 10 is a perspective view showing still another embodiment of the connecting device of the rotating electric machine according to the present invention from the bottom side.

FIG. 11 is a front sectional view showing still another embodiment of the connecting device for a rotating electric machine according to the present invention.

FIG. 12 is a front sectional view showing a main part of still another embodiment of the connecting device for a rotating electric machine according to the present invention.

FIG. 13 is a partially sectional front view showing an example of a conventional connecting device for a rotating electric machine.

[Explanation of symbols]

 1 Rotating Electric Machine 2 Circuit Means 3 Frame 4 First Terminal 5 Second Terminal 6 Wiring Means 16 Wire

Claims (1)

[Scope of utility model registration request] 1. A rotary electric machine connecting device for electrically connecting a rotary electric machine and a circuit means provided outside the rotary electric machine,
A wire drawn from the rotating electric machine is connected to a wiring means, the wiring means is connected to a first terminal fixed to a frame of the rotating electric machine, and is connected to the first terminal and the circuit means. A connecting device for a rotating electric machine, which is brought into contact with and connected to a second terminal.