JPS608552Y2 - Electrical connection structure of motor drive coil - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electrical connection structure between a motor drive coil and a control board of a brushless motor.

The conventional electrical connection structure of motor drive coils will be explained based on FIG. 4 to the control board 5, each lead wire 6 of the motor drive coil 1 is connected to the connection electrode of the control board 5 by soldering,
A bearing 7 is fitted in the center of the stator plate 3, and a rotor magnet 8 is placed so as to face the motor drive coil 1.
The rotor plate 9 with the attached rotor plate 9 and the shaft 10 passed through the bearing 7 are fixed with screws 11.

However, in such an electrical connection structure of motor drive coils, when connecting each lead wire of multiple motor drive coils to the connection electrode of the control board, extreme care must be taken not to confuse the polarity. This results in longer working hours and higher costs.

Furthermore, if the brushless motor breaks down, each lead wire of the motor drive coil must be removed from the connection electrode of the control board, which makes maintenance and inspection difficult.

The present invention was developed by focusing on the drawbacks of the conventional technology, and includes providing a mounting hole for attaching the control board to the flexible board, arranging an electrode pattern near the mounting hole, and connecting the mounting hole and the control board to the flexible board. The device is characterized in that the connecting electrode provided near the fixing hole and the electrode pattern are electrically press-connected by fixing the provided fixing hole with screws or the like.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

In FIG. 2, reference numeral 12 denotes a flexible board, and a mounting hole 14 is provided in each protrusion 13 protruding from the outer periphery of the annular board.
It is perforated.

Reference numeral 15 denotes a seat provided on the flexible substrate 12, and is connected to each lead wire 17 of a plurality of motor drive coils 16 arranged annularly on the flexible substrate 12.

Reference numeral 18 indicates an electrode pattern arranged near the mounting hole 14 of the flexible substrate 12, and is connected to the above-mentioned specialty product 15 by a printed pattern.

FIG. 3 is a plan view of the control board 19.
is the center hole 2 into which the motor drive coil 16 arranged in an annular manner is inserted.
0 is provided in the center, and a fixing hole 21 corresponding to the mounting hole 14 of the flexible substrate 12 and the electrode pattern 18, and a zigzag-shaped connection electrode 22 are also provided.

The electrode pattern 18 and the connection electrode 22 are plated with gold, solder, roll solder, etc. to ensure long-term connection.

Therefore, according to the configuration of the above-described embodiment, a plurality of motor drive coils 16 are arranged in a ring shape on the flexible substrate 12 and attached by adhesive or the like, and each lead wire 17 of the motor drive coil 16 is connected to the flexible substrate 12. Furthermore, the flexible board 12 is attached to the annular stator plate 3 by adhesive or the like, and the motor drive coil 16 is inserted into the center hole 20 of the control board 19 and connected to the mounting hole 14 of the flexible board 12. Control board 19
The stator plate 3 and the control board 19 are fixed by aligning the fixing holes 21 of the control board 19 and inserting screws 4 or the like into the mounting holes 14 and screwing them into the fixing holes 21. The electrode 22 and each electrode pattern 18 of the flexible substrate 11 are electrically press-connected.

Furthermore, the bearing 7 is fitted into the annular stator plate 3, and the rotor plate 9 to which the rotor magnet 8 is attached so as to face the motor drive coil 16 and the shaft 10 passed through the bearing 7 are fixed with screws or the like. .

As described above, according to the electrical connection structure of the motor drive coil according to the present invention, the electrode pattern of the flexible board, to which the lead wire of the motor drive coil is connected via the printed pattern, is attached to the control board with screws or the like. By pressure welding the connection electrodes to the connection electrodes, there is no need to solder the lead wires of the motor drive coil provided on the flexible board to the connection electrodes of the control board, unlike conventional methods, which eliminates the need to connect the wrong polarity. This eliminates wiring mistakes and reduces work time. In addition, in the event of a breakdown, maintenance and inspection become easier because the flexible board and control board can be disassembled by simply removing screws, etc.

Furthermore, by providing the electrode pattern near the mounting hole, it is possible to electrically connect the electrode pattern and the connection electrode using only the pressure force of screws, etc., and also to connect the connection electrode of the control board. By making the electrode pattern in a zigzag shape and press-contacting it with the electrode pattern of the flexible substrate, the connection electrode and the electrode pattern come into contact at multiple points, so that more reliable electrical connection can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a plan view of a flexible board with a motor drive coil attached to it used in an embodiment of the present invention, and Fig. 3 is a control used in an embodiment of the present invention. It is a board. 3... Stator plate, 4... Screws, 12... Flexible board, 14...
・Mounting hole, 15... Seat, 16... Motor drive coil, 17... Lead wire, 18...
... Electrode pattern, 19 ... Control board, 20
...Central hole, 21...Fixing hole, 22.
...Connection electrode.

Claims (1)

[Scope of utility model registration request] A motor drive coil electrical connection structure in which a plurality of motor drive coils are attached to a stator plate in an annular manner with a flexible board interposed therebetween, the stator plate is fixed to a control board, and the control board and the flexible board are electrically connected. At this point, a flexible board is connected by a printed pattern between the seat to which the lead wire of the motor drive coil is connected and the electrode pattern placed near the mounting hole to be mounted on the control board, and the flexible board is provided in correspondence with the mounting hole and the electrode pattern. The control board is provided with a fixing hole and a connecting electrode, and is fixed with screws or the like through the mounting hole and the fixing hole, and the electrode pattern and the connecting electrode are connected by pressure contact. Electrical connection structure of motor drive coil.