JPS64804B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electromagnetic device,
In particular, it relates to electromagnetic devices that convert electrical signals into mechanical forces that produce linear motion.

Conventionally, there have been two types of devices of this kind: a pull-action type as shown in FIG. 1, and a push-action type as shown in FIG.

The pulling action type device shown in FIG.
A coil 1 wound around the coil 1 is fixed inside a yoke 2, and a fixed iron core 3 in which a guide hole 3a along the central axis is formed in one side of the inside 1b of the coil 1 is fixed by a fixed plate 4. ing. Inside 1b of coil 1
On the other side, a movable iron core 5 that moves linearly in the axial direction inside the coil 1 is arranged so as to be screwed onto the lower end of a guide shaft 6 that is loosely passed through the guide hole 3a. The reset spring 7 is installed between the movable core 5 and the fixed core 3, and when the coil 1 is not energized, the reset spring 7 presses the movable core 5 in the direction in which the movable core 5 moves away from the fixed core 3. There is. An adjustment nut 8 for adjusting and regulating the reset position of the movable core 5 and the stroke of the core 5 is screwed onto the threaded portion 6a at the upper end of the guide shaft 6. An output shaft 9 is coaxially screwed onto the lower end of the movable core 5, and the output shaft 9 takes out the motion of the movable core 5 and moves linearly in the axial direction.

With this configuration, when the coil 1 is not energized, the movable iron core 5 is pressed downward by the reset spring 7, so that the movable core 5 is at the reset position shown in FIG. is stationary. When the coil 1 is energized from this state, the movable core 5 is attracted to the fixed core 3 against the reset spring 7, so the movable core 5, output shaft 9, guide shaft 6, and adjustment nut 8
are integrally driven upwards as shown in FIG. Then, when the energization of coil 1 is stopped,
The movable iron core 5 is driven downward by the reset spring 7 and reset to the state shown in FIG.

On the other hand, the pushing operation type device shown in FIG. 2a has an output shaft 9A corresponding to the output shaft 9 shown in FIG. 1a.
is a threaded shaft integrated with the guide shaft 6A,
The movable iron core 5 protrudes above the fixed plate 4 and is screwed onto the lower end of the guide shaft 6. Adjustment screw 8
is screwed onto the output shaft 9A. Other parts are the same as those in FIG. 1a. With this configuration, when the coil is energized, as shown in FIG. By stopping it, it is possible to return to the reset state shown in FIG.

However, since conventional electromagnetic devices are configured as described above, it is necessary to prepare separate devices with different component configurations for pulling and pushing operations, and the components are different for both. Therefore, each part had to be manufactured separately, which resulted in high costs and complicated handling of the parts.

The present invention aims to eliminate the above-mentioned drawbacks of the conventional devices, by completely unifying the parts of the electromagnetic device for the pull action type and the push action type, and by simply selecting the assembly configuration, the pull action type or the push action type electromagnetic device can be assembled. The purpose of this invention is to provide an electromagnetic device that can be made into a concrete shape.

An object of the present invention is to integrally extend a first movable core mounting shaft and an output shaft on one side of a movable core locking portion formed in the middle of a guide shaft, and a second mounting shaft on the other side. The electromagnetic device has a configuration in which a movable iron core having a center mounting hole is selectively mounted on either a first mounting shaft or a second mounting shaft, and can be of a pulling action type or a pushing action type depending on the arrangement direction of the guide shaft. The goal is to provide the following.

An embodiment of the present invention shown in the drawings will be described below.

FIG. 3a shows a case where the coil 1 is assembled in a pulling motion type, and the coil 1 is fixed inside the yoke 2, and the fixed core 3 having the guide hole 3a is attached to one side of the inside 1b of the coil 1 by means of the fixing plate 4. The configuration fixed to is similar to the conventional one described above. However, the guide shaft 16 has a large diameter portion 16a formed in the middle,
A first mounting shaft 16b is provided on one side of this large diameter portion 16a,
Next, an output shaft 19 consisting of a screw shaft is integrally extended,
A second mounting shaft 16c and a threaded portion 16d are integrally extended and formed on the other side of the large diameter portion 16a. The movable iron core 15 has a mounting center hole 15a formed along its central axis, and is fitted onto a first mounting shaft 16b, and is secured to a large diameter by a tightening nut 20 screwed onto the output screw shaft 19. It is fixed between the portion 16a and the tightening nut 20 and is located on the other side of the inside 1b of the coil 1. Further, the reset spring 7 is interposed between the movable iron core 15 and the fixed iron core 3, and the adjustment nut 8 is screwed into the threaded portion 16d, which are similar to the conventional one.

With the above configuration, when the coil 1 is energized, the movable core 15 resists the reset spring 7 and the fixed core 3
It is attracted to the side and moves along with it, and the output shaft 19
is pulled, resulting in the state shown in figure b. coil 1
When the energization is stopped, the reset spring 7 returns the state to the state shown in FIG.

Fig. 4a shows a push-operation assembly using the same parts as in Fig. 3a, with the guide shaft 16 facing the opposite direction and the movable iron core 15 being tightened to the second mounting shaft 16c. It is fixed using a mounting nut 20, and an adjustment nut 8 is screwed onto the output shaft 19.

With this configuration, when the coil 1 is energized,
As shown in FIG. 5B, a pushing motion can be applied to the output shaft 19.

In addition, in the above embodiment, the guide shaft 16 was formed with the large diameter portion 16a, but the large diameter portion 16
A C-shaped retaining ring or a split pin may be provided in place of a, and in short, any locking portion that locks the movable core 15 is sufficient. It is also conceivable to use a C-shaped retaining ring, split pin, or the like in place of the adjusting nut 8 and the tightening nut 20.

As described above, in this invention, the movable iron core locking part is formed in the middle of the guide shaft, and the output shaft is configured integrally with the guide shaft, so that the movable iron core can be selectively attached to either side of the locking part. By fixing it to the guide shaft and orienting the guide shaft accordingly, it can be used as either a pull or push type.The parts configuration is completely the same, which significantly reduces costs and simplifies parts handling. be effective.

[Brief explanation of drawings]

Figure 1 shows a conventional pull-action type, in which a is a vertical cross-sectional view when the current is not applied, b is a longitudinal cross-sectional view when the current is applied, and the second
The figures also show the pushing operation type, where a is a longitudinal cross-sectional view when the current is not energized, and b is a longitudinal cross-sectional view when the current is energized. FIGS. 3 and 4 show an embodiment of the present invention, and FIG. FIG. 4 is a vertical cross-sectional view of the assembly assembled into a push-action type, a when it is not energized and b is when it is energized. 1...Coil, 1b...Inside of the coil, 2...
Yoke, 3... Fixed iron core, 3a... Guide hole, 7
...Reset spring, 8...Adjustment nut, 15...
Movable iron core, 15a...Mounting center hole, 16...Guide shaft, 16a...Large diameter part (locking part), 16b, 1
6c...First and second mounting shafts, 16d...Threaded portion, 19...Output shaft, 20...Tightening nut. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. A fixed core having a guide hole, which is fixed to one side of a coil fixed to the inside of the yoke; a guide shaft that is loosely fitted into the guide hole and movable in the axial direction;
An electromagnet device comprising: a movable core arranged on the other side inside the coil and fixed to the guide shaft with a reset spring interposed between the movable core and the fixed core; and an output shaft cooperating with the guide shaft; a locking portion formed in the locking portion for locking the movable iron core; a first mounting shaft and the output shaft formed on one side of the locking portion; and a second mounting shaft formed on the other side of the locking portion. The movable iron core has a mounting center hole and is selectively attached and fixed to one of the first and second mounting shafts. An electromagnetic device characterized by: 2. The electromagnet device according to claim 1, wherein the locking portion is a large diameter portion formed on the guide shaft. 3. The electromagnet device according to claim 1, wherein the output shaft is a screw shaft. 4. The electromagnet device according to claim 1, wherein a threaded portion is provided at the end of the second mounting shaft.