JPH02266840A - Motor - Google Patents

Abstract

PURPOSE:To connect winding easily and reliably with a circuit board by providing a protrusion, projecting toward a circuit board, on an insulating cover and arranging a conductive connector, expandable/contractable to contact with the circuit board, on the protrusion then connecting the connector with the end portion of the winding. CONSTITUTION:End portion of a winding 6 is wound around a connector 17 and an insulating cover 14 is fixed to a circuit board 8. Then the connector 17 is inserted into a space A in a recess 16 and the end portion is connected electrically with the circuit board 8 and soldered thereto thus realizing a reliable connection. The connector 17 extends from the recess 17 to contact contacts with the circuit board 8 and connected electrically thereto. Since the connector 17 is expandable/contractable, connection between the winding 6 and the circuit board 8 is facilitated, distance between a stator 3 and the circuit board 8 can be shortened and the motor can be made thin.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electric motor having a circuit board, and particularly relates to a connection between a circuit board and a stator winding.

[Conventional technology]

FIG. 8 is a half-sectional view showing a conventional electric motor disclosed in, for example, Japanese Utility Model Application Publication No. 62-188976.
1) is a bearing holder, (21 is a bearing provided in this bearing holder, (3) is a stator fixed to the bearing holder (1) via a support member (2), and is attached to the stator core (5). A winding (6) is wound through an insulating cover (not shown).

(7) is the support member (2) to which the end of the winding (6) is connected.
A connector provided on the support member (a) and the bearing holder (
1) The circuit pattern of the circuit board (9) provided between
) is formed so as to come into elastic contact with the The shaft is rotatably fitted into the bearing (21), and (11) is formed from a rotor yoke (12) fixed to this rotary shaft and a magnet (13) facing the circumferential side of the stator. The rotor is

The conventional electric motor is constructed as described above, and by applying current to the winding (6) via the circuit board ts+, a magnetic field is generated in the stator (B), and due to the magnetic interaction with the magnet (13), the rotor ( 11) is adapted to rotate around the rotation axis Ql, and the connection between the winding (6) and the circuit board is made by a connector m that elastically abuts against the circuit pattern (9) of the circuit board (81). It is designed to absorb dimensional errors.

[Problem to be solved by the invention]

In the conventional electric motor as described above, the winding of the stator (3) (
6) to the connector (7) provided on the support member (A), and further, by bringing this connector (7) into contact with the circuit pattern (9) of the circuit board (8), the winding Since the stator (6) and the circuit board are electrically connected, the gap between the stator (3) and the circuit board is large and the motor becomes thick. Therefore, in order to make it thinner,
As shown in Japanese Patent No. 81072, the ends of the windings (6) may be soldered directly to the circuit board, but this method has the problem that the soldering area is narrow and workability is poor.

This invention was made to solve the problem,
The purpose of the present invention is to obtain an electric motor in which the windings can be easily connected to a circuit board by using an insulating cover provided between the stator core and the windings, and the external dimensions can be made thin. It is something.

[Means to solve the problem]

In the electric motor according to the present invention, the insulating cover is provided with a convex portion that protrudes toward the circuit board, and the convex portion is provided with a connector made of a conductive material and formed to be expandable and contractible so as to come into contact with the circuit board, and this connection The end of the winding is connected to the terminal.

Further, a spring body is formed at the end of the convex portion, and a connector is provided to cover the spring body and to be slidable on the convex portion.

Further, the insulating cover is provided with a convex portion to which the circuit board is attached, and the end portion of the winding wire is wound around the convex portion to be electrically connected to the circuit board.

Furthermore, the insulating cover is provided with a convex portion to which the circuit board is attached, and the convex portion is plated with conductive material so that the winding wire is connected to the circuit board through the plating.

Further, the convex portion is formed to elastically abut against the circuit board.

[Effect]

In this invention, the insulating cover is provided with a convex portion that protrudes toward the circuit board, and the convex portion is provided with a connector made of a conductive material that is expandable and contractible so as to come into contact with the circuit board. Since the ends of the windings are connected, the connection between the windings and the circuit board is easy and reliable, and since the insulating cover is used, the space between the stator and the circuit board can be made smaller.

In addition, since a spring body is formed at the end of the convex part and the connector is provided so as to cover this spring body and be slidable on the convex part, the connector is pressed toward the circuit board by the spring body, and the winding and the circuit board The electrical connection with the

Furthermore, the insulating cover is provided with a convex part to which the circuit board is attached, and the end of the winding is wound around this convex part to electrically connect to the circuit board. The winding can be connected to the circuit board at the same time as mounting, improving work efficiency.

Furthermore, the insulating cover is provided with a convex portion to which the circuit board is attached, and this convex portion is plated with conductive material, and the winding is connected to the circuit board through this plating. This simplifies the connection of the winding to the circuit board and improves the work of connecting the winding to the circuit board.

Moreover, since the convex portion is formed to elastically abut against the circuit board, the circuit board and the convex portion provided on the insulating cover are reliably connected.

〔Example〕

FIG. 1 is a sectional view of essential parts showing an embodiment of the present invention.
(1) to B), (5), (6) and (to) to (13)
(14) is an insulating cover placed over the stator core (5) of the stator (3), and the protrusion (15) is formed on the circuit board (81 side). At the same time, a recess (16) is formed.(17
) is a connector made of a conductive material and provided so that a predetermined space (A) is provided inside the recess, and is provided so as to be extendable and retractable by sliding in this recess (16), and the protrusion has a winding ( 6) are connected.

In the electric motor configured as above, the winding (6)
Wrap the end of the connector (17) around the insulating cover (14).
) to the circuit board (81).At this time, if the distance between the insulating cover (14) and the circuit board (to) is short, attach the second
As shown in the figure, the connector (17) is located in the hollow 1 in the recess (16)? f
1(A), and the end contacts the circuit board (5) to be electrically connected and soldered to ensure a reliable connection. On the other hand, if the distance between the insulating cover (14) and the circuit board becomes long, the connector (17) may
6) and contacts the circuit board (81) to be electrically connected. By expanding and contracting the connector (17) in this way,
The connection between the winding (6) and the circuit board becomes easy and reliable, the distance between the stator (3) and the circuit board can be reduced, and the motor can be made thinner. .

In addition, as shown in Fig. 3, the convex part (
15) A spring body (18) that presses downward is integrally formed on the tip, and the connector (19) is attached to this spring body (18).
The same effect can be obtained by forming the convex portion (18) into a box shape so as to cover the convex portion (18), and disposing the convex portion (15) so as to be able to slide up and down so as to come into contact with the circuit board (5).

In addition, as shown in FIG. By attaching the end of the winding (6) to the circuit board (to) at the same time as soldering to the circuit board, the insulating cover (14) and the winding (6) can be connected to the circuit board (8) at the same time. This improves work efficiency, and furthermore,
As shown in Fig. 5, conductive plating is applied to the circuit board mounting protrusion (2 (3)), and the winding (6) is connected to the circuit board (a) through this plating (21). , the connection between the winding (6) and the circuit board (5) becomes easier, and workability is further improved.

Furthermore, as shown in FIG. 6, a connector (7) is provided on the convex part (15) of the insulating cover (14),
A notch (22) is provided in the ridge, and a convex portion (1) is formed as shown in FIG.
If 5) is brought into elastic contact with the circuit board, the connection to the circuit board becomes more reliable.

〔Effect of the invention〕

As explained above, this invention provides an insulating cover with a convex portion that protrudes toward the circuit board, and a connector made of a conductive material that is expandable and contractible so as to come into contact with the circuit board is provided on the convex portion, and this connection By connecting the ends of the windings to the terminals, the tangent between the windings and the circuit board can be easily and reliably made, and the size of the motor can also be made thinner.

In addition, by forming a spring body at the end of the convex part and providing the connector so as to cover this spring body and to be able to slide on the convex part, the electrical connection between the winding wire and the circuit board becomes more reliable. There is.

Furthermore, the insulating cover has a convex part to which the circuit board is attached, and the end of the winding wire is wound around this convex part to electrically connect to the circuit board. This has the advantage that the winding can be connected to the circuit board at the same time as it is attached.

Furthermore, the insulating cover is provided with a convex portion to which the circuit board is attached, and this convex portion is plated with conductive material, and the winding wire is connected to the circuit board through this plating. This has the effect of making it easier to connect the windings to the parts and improving work efficiency.

Furthermore, since the convex portion is formed to elastically abut against the circuit board, there is an effect that the connection to the circuit board becomes more reliable.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main part showing an embodiment of the present invention, Fig. 2 is a sectional view of the main part showing the assembled state, and Fig. 3 is a connection to the spring body (18) provided on the convex part (15). Figure 4 is a cross-sectional view of the main part showing the state covered with the protrusion (2 (3)).
Fig. 5 is a cross-sectional view of the main part showing the state in which the winding (6) is wound on the circuit board and attached to the circuit board. , FIG. 6 is a cross-sectional view of the main part in which the notch (22) is provided in the convex part (I5), FIG. 7 is a cross-sectional view showing the state in which the convex part (15) in FIG. 6 is elastically deformed, and FIG. The figure is a sectional view showing a conventional electric motor.The same reference numerals in each figure indicate the same or equivalent parts, and (
3) is the stator, (5) is the stator core, (6) is the winding, f
81 C circuit board, in H on rotating shaft, (11) rotor, (14) insulating cover, (15) convex part, (17)
is the connector, (18) is the spring body, (19) is the connector, (2
(3) is a circuit board mounting convex portion, and (21) is a plating.

Claims (5)

[Claims] (1) A stator with a winding wound around the stator core through an insulating cover, a rotor that has a magnet facing the stator and rotates around a rotating shaft, and the winding electrically connected to each other. a circuit board connected to the stator and provided at a predetermined distance; the insulating cover is provided with a protrusion protruding toward the circuit board; the protrusion is made of a conductive material; An electric motor including a connector that is extendable and contractible so as to come into contact with the connector, and an end of the winding wire is connected to the connector. (2) The electric motor according to claim 1, wherein a spring body is formed at the end of the convex portion, and the connector is provided to cover the spring body and to be slidable on the convex portion. (3) A stator with a winding wound around the stator core through an insulating cover, a rotor that has a magnet facing the stator and rotates around a rotating shaft, and the winding electrically connected to each other. The circuit board is connected to the stator and is provided at a predetermined interval, the insulating cover is provided with a convex portion to which the circuit board is attached, and the end portion of the winding is wound around the convex portion. and an electric motor that is electrically connected to the circuit board. (4) A stator with a winding wound around the stator core through an insulating cover, a rotor that has a magnet facing the stator and rotates around a rotating shaft, and the winding electrically connected to each other. a circuit board connected to the stator and provided at a predetermined interval; the insulating cover is provided with a convex portion to which the circuit board is attached; and the convex portion is plated with conductive material; An electric motor in which the winding is connected to a circuit board through this plating. (5) The electric motor according to claim 3 or 4, wherein the convex portion is formed to elastically abut against the circuit board.