JPS6017851Y2 - coil bobbin - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coil bobbin in which the attitude of a terminal mounting portion is maintained by an auxiliary piston.

Conventionally, small synchronous motors used as drive sources for timers, etc., have a terminal mounting section attached to the flange that constitutes the coil bobbin, and a pair of terminals arranged in this terminal mounting section are connected to both ends of the coil. are connected to each other.

In this case, the terminal mounting part is connected to the flange part via a hinge so that it can rotate (open and close) freely, and is normally held in an open state. When supporting the coil on a rotating shaft and rotating it at high speed, and winding the coil around the body, the terminal mounting portion collapses onto the inner surface of the flange portion due to centrifugal force, which poses an inconvenience in the winding work.

The present invention has been made in order to eliminate and prevent the above-mentioned disadvantages.The present invention has been made in order to eliminate and prevent the above-mentioned disadvantages. The present invention provides a coil bobbin which is connected so as to be openable and closable by a positioned auxiliary hinge, thereby preventing the coil bobbin from collapsing during winding work, and which enables the winding work to be carried out reliably.

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

FIG. 1 is a partially cutaway side view of a coil bobbin according to the present invention;
FIG. 2 is a partially cutaway plan view thereof, and FIG. 3 is an enlarged sectional view of the main part.

In these figures, what is designated as a whole by the reference numeral 1 is a coil bobbin integrally formed of synthetic resin. l pairs of parallel flanges provided; 3.
4, and a terminal mounting portion 5 connected to the periphery of the lower flange portion 4 of the pair of flange portions 3 and 4 by a hinge, which will be described later. It is designed to be wound with a number of turns.

Since a rotor (not shown) is rotatably inserted into the inner space A of the body 2 from the upper end opening, a hole 7 is formed in the center of the bottom surface 2a, through which the lower end of the rotor shaft passes.

Further, around this hole 7, a plurality of stator insertion holes 8 are formed on the same circumference.

Parts of the periphery of the pair of flange parts 3 and 4, corresponding to each other, are cut off in a straight line to form straight parts 9 and 10, respectively.

Further, the lower flange portion 4 is provided with a coil locking portion 11 that locks one end of the coil 6.

The coil locking portion 11 is composed of a coil lead-out groove 12 that opens on the peripheral edge and inner surface 4a of the flange portion 4, and a tongue piece 13 formed by the coil lead-out groove 12.

Therefore, during winding work, as shown in FIGS. 1 and 3, the starting end 6a of the coil 6 is inserted into the coil lead-out groove 12, and the tongue 13 and the portion of the flange portion 4 facing the tongue 13 are When the coil bobbin 1 is rotated, the coil 6 is wound around the circumferential surface of the body 2.

The linear portion 10 of the lower flange portion 4 has an elongated main hinge 14 on which the terminal attaching portion 5 is attached, and a l pair located on both sides of the main hinge 14 and slightly behind the main hinge 14 (lower in the figure). The auxiliary hinges 15A and 15B are connected to each other so as to be rotatable in the vertical direction.

For this purpose, the terminal mounting portion 5 is normally held substantially vertically as shown in the figure, with the opening facing upward.

In this case, the important thing is that the pair of auxiliary hinges 15A,
15B prevents the upper end portion of the terminal mounting portion 5 from protruding above the inner surface 4a of the lower flange portion 4.

Note that the auxiliary hinges 15A and 15B are curved in a beard shape and convex.

A pair of terminals 16a are provided inside the terminal mounting portion 5, one end of which projects outward from the back surface of the terminal mounting portion 5.

16b are arranged, and these terminals 16a.

A starting end and a terminal end of the coil 6 wound around the body 2 are connected to the coil 16b.

When the coil bobbin 1 is assembled into the motor case (not shown), the terminal mounting portion 5 is rotated counterclockwise about the main hinge 14, so that the opening end surface 5a of the terminal mounting portion 5 is rotated counterclockwise around the main hinge 14. It is closed by coming into contact with the straight parts 9 and 10.

Thus, with this configuration, the pair of auxiliary hinges 15A and 15B located behind the main hinge 14 hold the terminal mounting portion 5 in an open state, and the coil bobbin 1 is moved at high speed by the coil winding machine. Even if it is rotated, the coil 6 can be accurately wound around the body part 2 without causing the terminal mounting part 5 to fall down in the closing direction due to centrifugal force and facing above the inner surface 4a of the lower flange part 4. I can do it.

Note that these auxiliary hinges 15A and 15B are no longer needed after the winding work is completed, so even if they stretch and break when the terminal mounting portion 5 is closed and the coil bobbin 1 is assembled into the motor case, no problem will occur. Never.

As explained above, according to the coil bobbin according to the present invention, the terminal mounting portion is provided on the periphery of the flange portion with the main hinge, and on both sides of the main hinge and shifted toward the outer surface of the flange portion with respect to the coil lead-out groove. Since it is configured to be connected so as to be openable and closable by the located auxiliary hinge, the terminal mounting part is prevented from collapsing inward of the flange part, that is, in the closing direction, due to centrifugal force during coil winding work. This makes it possible to reliably prevent disconnection accidents, and because the terminal mounting part is located on the inner surface of the flange part, more specifically, outside the position of the coil lead-out groove, it is possible to lead out both ends of the coil extremely smoothly. Therefore, the coil winding work can be performed well and accurately as a whole.

Furthermore, since the coil bobbin is integrally formed of synthetic resin, manufacturing is simple and the formation of the auxiliary hinge is also easy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of a coil bobbin according to the present invention, FIG. 2 is a partially cutaway plan view thereof, and FIG. 3 is an enlarged sectional view of the main part thereof. 1... Coil bobbin, 2... Body, 3
, 4... Flange part, 5... Terminal mounting part, 6... Coil, 14... Main hinge, 15A, 15B... Auxiliary hinge.

Claims (1)

[Scope of utility model registration request] A main hinge is attached to the periphery of one of the pair of flange sections connected to each other at both ends of the body, and a main hinge is provided on both sides of the main hinge and on the outer surface side of the flange section with respect to the coil lead-out groove. The terminal mounting part is connected to the terminal mounting part so as to be openable and closable by means of an auxiliary hinge positioned offset from the flange part, and the terminal mounting part is configured to be prevented from falling down toward the body part inside the flange part by the auxiliary hinge. A coil bobbin featuring