JPS6348091Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to a bidirectional drive solenoid used in connection with a locking lever of a door locking device for an earpiece.

Conventionally, this type of bidirectional drive solenoid has a pair of excitation coils 2 and 3 wound in a cylindrical shape inside a cylindrical casing 1 made of a magnetic material, connected to an annular yoke 4, as shown in FIG. A movable iron core 7 made of a permanent magnet is fixed by a pair of fixed iron cores 5 and 6 to both ends of an inner cylinder formed inside these excitation coils 2 and 3. When the excitation coils 2 and 3 are energized, the movable core 7 is moved from the lock position shown in the figure in the opposite direction by the attractive force of the excitation coils. Driven to unlocked position. Furthermore, when the excitation coils 2 and 3 are energized in the opposite direction, the movable iron core 7 is driven from the unlocked position to the lock position shown in the figure by the attractive force of the excitation coils 2 and 3 acting in the opposite direction.

Here, in the bidirectional drive solenoid having such a configuration, the excitation coils 2 and 3 are configured as shown in FIG. That is, the excitation coil 2 has a coil wire 2a wound around a bobbin 9, the other end of which is taken out as a coil wire 2b, and the excitation coil 3
The coil wire 3a is wound around the bobbin 10 in the opposite direction to the excitation coil 2, and the other end is wound with the coil wire 3b.
It is taken out as Also, coil wire 2
The ends a and 3a are collectively soldered to the terminal 11, and the coil wire ends 2b and 3b are collectively soldered to the terminal 12. By configuring the excitation coils 2 and 3 in this manner, the plunger 8 can be driven in both directions by energizing as described above.

However, in the bidirectional drive solenoid having the above configuration, the excitation coils 2 and 3 are configured with separate coil wires 2a and 3a, respectively, as described above, so there may be problems due to wire breakage or when the coil wires are connected in different directions. There are drawbacks such as a decrease in winding efficiency due to winding and a decrease in reliability due to soldering two coil wires together into one terminal.

Therefore, the present invention aims to form two excitation coils with one coil wire, first to improve the reliability against disconnection, second to improve the winding efficiency of the coil wire, and third to improve the reliability against disconnection. The purpose is to improve the reliability of terminal connections.

In order to achieve the above object, the gist of the configuration is that two excitation coils are formed by winding one coil wire around a plurality of bobbins that are formed integrally or connectably.

Therefore, in the present invention, since two excitation coils can be formed using one coil wire, the winding efficiency is improved and the number of points where there is a risk of wire breakage is reduced.
In addition, the terminal connection requires only one coil wire, which not only achieves the above purpose, but also allows both bobbins around which each coil is wound to be formed directly integrally or so that they can be connected, so that at least one This has the effect of preventing the windings of the coil from fraying, making it easier to assemble the excitation coil, and improving the ease of assembly.

A first embodiment of the present invention will be described below.

In the bidirectional driving solenoid 20 shown in FIG. 3, bobbins 22 and 23 are disposed within a cylindrical casing 21 made of a magnetic material. The bobbin 2
2 and 23 are protrusions 22a and 22b and protrusion 2
3a and 23b, with an annular yoke 24 interposed between the bobbin 22 and the bobbin 23, the protrusion 22
a to the protrusion 23b, and the protrusion 22b to the protrusion 23.
a Fitted bobbins 22, 23 and yoke 24
are integrated. A coil wire is wound around the bobbins 22 and 23 in the following manner.
First, the coil wire 25a is wound around the bobbin 22 in a left-handed (or right-handed) manner about half a turn, and the coil 26a
The end portion is transferred to the bobbin 23 as a coil wire 25b, and wound in a right-handed (or left-handed) manner to form a coil 27. The coil wire 25c at the end returns to the bobbin 22 again and winds the remaining half of the bobbin 22 in a left-handed (or right-handed) manner, and the coil 25c
6b, and the end portion is taken out as a coil wire 25d. In this way, the coil 26 is
It is formed by being divided into 6a and 26b and wound.

Also, the end of the coil wire 25a is connected to the terminal 28.
The end of the coil wire 25d is soldered to the terminal 29.

Excitation coils 26 and 27 formed in this way
A pair of fixed iron cores 30 and 31 are disposed at both ends of an inner cylindrical portion formed inside the body, and a plunger 33 to which a movable iron core 32 made of a permanent magnet is fixed is reciprocated in the axial direction by the fixed iron cores 30 and 31. It is pivoted as possible.

Therefore, since the excitation coils 26 and 27 are substantially the same as the excitation coils 2 and 3 of the conventional example, the plunger 33 can be driven bidirectionally depending on the direction of the current flowing between the coil wires 25a and 25d. I can do it.

Next, we will discuss the second embodiment of the present invention, that is, the bidirectional drive solenoid in which the bobbin is integrally formed.
The explanation will be made based on FIGS. 7 and 8.

A bobbin 42 is disposed within the bidirectional drive solenoid 40 and is integrally formed within a cylindrical casing 41 made of a magnetic material. The bobbin 42 has a notch 42a, into which a notch 43a of the yoke 43 is fitted as shown in FIG.

As in the first embodiment, a coil wire 44a is first soldered to a terminal 47 on the bobbin 42, and then wound approximately halfway around the bobbin 42b in a left-handed (or right-handed) manner to form a coil 45a. As shown in FIG. 8, the coil 42 is transferred to the bobbin 42c through a notch 42a provided in the bobbin 42, and is wound clockwise (or counterclockwise) to form a coil 46. After winding the coil 46, the coil wire returns to the bobbin 42b again and winds the remaining half of the bobbin 42b in a left-handed (or right-handed) manner to form a coil 45b, and the coil wire 4
4b end is soldered to terminal 48.

In this way, the coil 45 is formed by being divided into 45a and 45b and wound.

A pair of fixed iron cores 49 and 50 are disposed at both ends of an inner cylindrical portion formed inside the bobbin 42, and a plunger 52 having a movable iron core 51 made of a permanent magnet fixed thereto is pivoted by the fixed iron cores 49 and 50. It is pivoted so that it can reciprocate in the direction.

Therefore, by changing the direction of the current flowing between the coil wires 44a and 44b, the plunger 5
2 can be driven in both directions.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional bidirectional drive solenoid, Fig. 2 is a perspective view showing a conventional method of winding a coil wire around a bobbin, and Fig. 3 is a first implementation of a bidirectional drive solenoid according to the present invention. A cross-sectional view showing an example,
4 is a cross-sectional view of FIG. 3, FIG. 5 is a perspective view showing the method of winding the coil wire around the bobbin of the first embodiment, and FIG. 6 is the second embodiment of the bidirectional drive solenoid according to the present invention. FIG. 7 is a sectional view showing the embodiment, FIG. 7 is a cross-sectional view taken from FIG. 6, and FIG. 8 is a perspective view showing a method of winding the coil wire around the bobbin of the second embodiment. 20, 40... Bidirectional drive solenoid, 21,
41...Tubular casing, 26, 27, 45, 46
...Excitation coil, 24,43...Yoke, 30,3
1, 49, 50... Fixed iron core, 32, 51... Movable iron core, 33, 52... Plunger, 22, 23, 42
...Bobbin, 25a, 25b, 25c, 25d, 4
4a, 44b...Coil wire.

Claims (1)

[Scope of utility model registration request] A pair of excitation coils wound hollow inside a cylindrical casing made of a magnetic material are coaxially arranged via a hollow yoke, and a fixed iron core is placed at the outer end of each excitation coil. In the bidirectional driving solenoid, the movable iron core made of a permanent magnet is integrally fixed to a plunger which is provided in a hollow part formed inside both the excitation coils so as to be able to reciprocate in the axial direction. The excitation coil is a bidirectional drive solenoid formed by winding a single coil wire around a plurality of bobbins that are formed integrally or integrally with each other.