JPH0512964Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is an electromagnetic solenoid that winds a coil around the outer periphery of a cylindrical portion of a bobbin, and generates a magnetic force against an iron core placed on the bobbin by energizing the coil. Regarding this, this electromagnetic solenoid is used, for example, as an actuator for driving an electromagnetic valve or the like.

[Conventional technology]

An example of a commonly used electromagnetic solenoid in the past is Utility Model Application No. 57-102770.

In this case, the coil is wound around the outer circumference of the bobbin, and the wire at the beginning of the winding of the coil is fixed to one terminal located in the terminal mounting part formed integrally with the bobbin, and the wire at the end of the winding of the coil is It is fixed to the terminal on the other side placed in the terminal mounting section.

On the other hand, the electromagnetic solenoid described above is formed by automatically winding a coil around the outer periphery of a bobbin using a winding machine, as shown in, for example, Japanese Utility Model Publication No. 34434/1983.

In the work of winding a coil onto a bobbin using such a winding machine, the winding start wire and winding end wire of the coil are automatically fixed to one end of each terminal in the winding machine. When fixing the end wire to the terminal, it is desirable that the end wire of the coil is fixed to the terminal with a certain tensile load applied.

This is important in order to prevent the coil wound around the bobbin from coming apart when the coil is wound onto the terminal and the wire is fixed. (The upper part of the coil winding wire is laminated during the subsequent coil winding work and the coil is wound so that no looseness occurs.) For this reason, conventionally, the hook part was lowered from the outer peripheral end surface of the terminal mounting part. is placed in a protruding manner, and the wire at the end of the coil is fixed to one end of the terminal by applying a constant tensile load through the hook. (The structure of the hook portion is not disclosed in the prior art example.) [Problem to be solved by the invention] In such a conventional electromagnetic solenoid, the side surface of the cylindrical portion of the hook portion is connected to the cylindrical portion of the terminal mounting portion. It is located further away from the side.

According to this, when a tensile load is applied to the winding end wire of the coil through the hook part, the distance that the winding end wire of the coil passes changes, which is not preferable.

[Means to solve problems]

The purpose of the electromagnetic solenoid of the present invention is to obtain an electromagnetic solenoid in which the winding end wire of the coil always passes through the same position with respect to the hook, and there is no variation in the coil winding. The side surface of the cylindrical portion of the terminal portion is flush with the side surface of the cylindrical portion of the collar portion and the side surface of the cylindrical portion of the terminal mounting portion.

[Effect]

The end wire of the coil is routed from the side of the cylindrical part of the terminal mounting part to the side of the cylindrical part of the hook part, so it always passes through the same position. The coil can be completely wound without becoming loose.

〔Example〕

Hereinafter, one embodiment of the electromagnetic solenoid according to the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show a state in which the terminal is integrally attached to the bobbin. Reference numeral 1 denotes a cylindrical portion 2 made of a synthetic resin material, and plate-shaped flanges 3A and 3 extending outward at the upper and lower portions of the cylindrical portion 2, respectively.
A terminal mounting portion 4 extending outward from the cylindrical portion 2 is integrally formed with the bobbin 1 at a portion including the upper collar portion 3A in the figure.

In addition, the cylindrical side surface 3C of the upper flange 3A (the lower surface in the figure of the flange 3A) and the terminal mounting portion 4
It is formed on the same plane A-A as the cylindrical part side surface 4C (lower side in the drawing of the terminal mounting part 4).
Terminals 5 and 6 are integrally attached to the terminal attachment part 4, and the left end of the terminal 5 on one side is inserted into the terminal attachment part 4, and a coil winding, which will be described later, is inserted in the middle part. A bending portion 5A for fixing the coil to fix the initial wire is formed, and a bending portion 5B for fixing the lead wire to fix the lead wire is formed at the right end.

In addition, the terminal 6 on the other side is formed in an L shape,
In addition to being inserted into the terminal mounting part 4, a bending part 6A for fixing the coil is formed on the left protruding end to fix the winding end wire of the coil, which will be described later, and a coupler is further provided on the upward protruding end. A fitting portion 6B (not shown) is formed. A hook portion 7 is provided on the outer circumferential end surface 4A of the terminal attachment portion 4 so as to protrude from the end surface 4A. Then, the cylindrical portion side surface 7A of this hook portion 7
(lower side in the figure) is the cylindrical side surface 3C of the upper collar portion 3A and the cylindrical side surface 4 of the terminal mounting portion 4.
It is placed on the same plane A-A as C.

Next, the operation of winding the coil 8 around the bobbin 1 will be described. The winding operation of the coil 8 on the bobbin 1 is performed by a winding machine (not shown) as shown in Japanese Utility Model Publication No. 62-34434. According to this, first, the winding start wire 8A of the coil 8 is inserted into the bent part 5A of the terminal 5 on one side for fixing the coil, and then the winding start wire 8A of the coil 8 is inserted into the bent part 5A for fixing the coil, and then the winding start wire 8A is passed through the bent part 5A for fixing the coil on the terminal 5 on one side. Coil 8 is placed at. Thereafter, the coil 8 is wound around the outer periphery of the cylindrical portion 2 by a predetermined number of turns.

Next, the winding end wire 8B of the coil 8 is hooked to the hook part 7, and the winding end wire 8B is connected to the terminal 6 on the other side.
It is inserted into the bent part of the bent part 6A for fixing the coil. At this time, a certain tensile load is applied to the end wire of the coil 8 by the winding machine.

By the above operations, the coil 8 for the bobbin 1 is
The winding work of the coil 8 is completed, and the coil fixing bending parts 5A and 5B of the terminal 5 on one side and the terminal 6 on the other side are pressed and caulked, and the winding start line 8A and The winding end wire 8B can be fixedly attached to each terminal 5 and 6, and after this work is completed, the end of the winding end wire 8B of the coil 8 is cut.

This state is clearly shown in FIGS. 3 and 4.

In this way, if the cylindrical side surface 3C of the collar portion 3A, the cylindrical side surface 4C of the terminal mounting portion 4, and the cylindrical side surface 7A of the hook portion 7 are on the same plane, the coil 8
The winding end line 8B is the cylindrical side surface 3 of the collar 3A.
C, side surface 4C of the cylindrical part of the terminal mounting part 4, since it does not go upward in the figure, the coil 8
The winding end line 8B is arranged so as to always pass through the same portion of the hook portion 7.

[Effect of idea]

As described above, according to the electromagnetic solenoid of the present invention, the side surface of the cylindrical portion of the hook portion is arranged on the same plane as the side surface of the cylindrical portion of the collar portion and the side surface of the cylindrical portion of the terminal mounting portion, so that the end wire of the coil is connected to the hook portion. The electromagnetic solenoid is stopped at the hook part in a substantially straight line during the period of time, and an electromagnetic solenoid with no irregularities in the coil winding can be obtained.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the electromagnetic solenoid bobbin according to the present invention, Fig. 2 is a top plan view of Fig. 1, and Fig. 3 shows a state in which a coil is wound around the bobbin of Fig. 1. The side view shown in FIG. 4 is a top plan view of FIG. 3. 1...Bobbin, 2...Cylindrical part, 3A, 3B...
Flange part, 3C... Cylindrical part side surface of upper collar part 3A, 4
...Terminal mounting part, 4C...Cylindrical part side, 5
...Terminal on one side, 6... Terminal on the other side, 7... Hook part, 7A... Side surface of cylinder part, 8...
... Coil, 8A ... Winding start line of coil 8, 8
B...The winding end wire of coil 8.

Claims (1)

[Claims for Utility Model Registration] A bobbin formed by a cylindrical portion 2, flanges 3A and 3B provided at both ends of the cylindrical portion 2, and a terminal attachment portion 4 provided outward from the cylindrical portion 2. 1; Terminals 5 and 6 are integrally arranged on the terminal mounting part 4 of the bobbin 1; and the winding start line 8A of the coil 8 wound around the outer periphery of the cylindrical part 2 of the bobbin 1 is connected to the terminal 5 on one side. In the electromagnetic solenoid fixed to the terminal 6 on the other side, the end wire 8B of the coil 8 is fixed to the terminal 6 on the other side via the hook part 7 provided so as to protrude from the end surface 4A of the outer periphery of the terminal mounting part 4.
, a cylindrical side surface 3C of the terminal mounting portion 4, a cylindrical side surface 7A of the hook portion 7,
An electromagnetic solenoid that forms the same plane.