JPH0877862A - Detecting switch device - Google Patents

Abstract

PURPOSE: To provide a detecting switch device by which labor is not taken in work at a job site by arranging plural detecting switches together in an apparatus body so as to open and close a circuit by independently detecting the position of a moving object. CONSTITUTION: Stand parts 1a are respectively and protrusively arranged in both end parts of an apparatus body 1. A first detecting switch 2 is arranged in the stand part 1a of one end part, and a second detecting switch 3 is arranged in the stand part 1a of the other end part. When a moving object 10 moves in the arrow direction, the first detecting switch 2 detects the position of the moving object 10, and opens and closes a transistor 2a so that a load 20a operates. Afterwards, when the moving object 10 goes over a moving terminal and continues to move, the second detecting switch 3 detects the overrun, and a contact point part 3a opens and closes so that a load 20b to stop the movement of the moving object 10 operates. In the plural detecting switches 2 and 3, wiring is laid between them. In the plural detecting switches, the distance between respective ones can be freely adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detection switch device used in equipment such as machine tools.

[0002]

2. Description of the Related Art Conventionally, there is a detection switch device of this type shown in FIG. This product was assembled by individually installing a non-contact type detection switch A and a contact type detection switch B for detecting the position of a moving object X and opening / closing a circuit in equipment Y such as a machine tool.

[0003]

In the conventional detection switch device described above, a series of operations such as installing the detection switches A and B individually and then wiring the detection switches A and B are performed. It had to be done at the installation site, and the work at the installation site was troublesome.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a detection switch device which does not require any trouble in the work at the installation site.

[0005]

In order to solve the above-mentioned problems, a plurality of detection switches for independently detecting the position of a moving object to open and close a circuit, and the detection switches are arranged together. And a body that does.

According to a second aspect of the present invention, in the first aspect, the plurality of detection switches are arranged so as to simultaneously detect the position of the moving object.

According to a third aspect of the present invention, in the first aspect, the distance between the plurality of detection switches is adjustable.

[0008]

According to the first aspect of the present invention, since the plurality of detection switches are pre-wired between them and are arranged together in one body, work at the installation site can be performed. It takes less time.

According to the second aspect of the present invention, when a plurality of detection switches are connected to the load in a state where the respective switching parts for opening and closing the circuit are connected in parallel, one of the detection switches fails. Even so, the reliability is high because the load is opened and closed by the opening and closing section in which the remaining detection switches arranged to detect the positions of the moving objects at the same time are connected in parallel.

According to the third aspect of the present invention, the plurality of detection switches whose distances are adjustable are installed at the installation site when it is necessary to finely adjust the distance between the detection switches to a predetermined distance. You can make fine adjustments with.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. This detection switch device has a body 1,
It is configured to include a first detection switch 2 and a second detection switch 3.

The body 1 is formed in a substantially rectangular parallelepiped shape, and on one surface thereof, base portions 1a are provided at both ends so as to project. The first detection switch 2 is attached to the base 1a at this one end.
A second detection switch 3 is arranged on the base 1a at the other end, and the wiring between the first and second detection switches 2 and 3 is made in advance.

As shown in FIG. 2, the first detection switch 2 is a non-contact type detection switch composed of a transistor 2a which is an opening / closing part of the circuit and other internal circuits 2b.
The detection unit 2c on the surface detects the movement of the moving object 10. The contactless detection switch includes a photoelectric switch and a proximity switch, each of which has the following features.
Since a photoelectric switch uses light, it has a long detection distance, but it is difficult to use it in a bad environment, and a switch with a large load cannot be opened or closed. On the other hand, since the proximity switch uses magnetism, it can be used in a bad environment, but the detection distance is short. Therefore, whether to use the photoelectric switch or the proximity switch may be appropriately selected depending on the usage situation.

The second detection switch 3 is a contact type detection switch having a contact portion 3a which is an opening / closing portion of the circuit,
When the moving object 10 contacts the contact portion 3b, the moving object 10
It is a so-called limit switch that detects 10. Although this contact-type detection switch has a problem in life because it has a contact, it has an advantage that it can open and close even a large-capacity load.

Next, the position of the moving object 10 is detected to detect the circuit 20.
The detection operation of the first and second detection switches 2 and 3 for opening and closing will be described. When the moving object 10 moves in the direction indicated by the arrow on the one surface side of the body 1, first the first detection switch 2 detects the position of the moving object 10 and opens / closes the transistor 2a so that the load 20a operates, After that, when the moving object 10 continues to move beyond the movement end point indicated by the chain double-dashed line, the second detection switch 3 detects the overrun and the moving object
Contact part 3a so that load 20b that stops the movement of 10 operates
Opens and closes.

In such a detection switch device, the first
Since the wiring between them and the second detection switches 2 and 3 are made in advance and are arranged together in one body 1, at the installation site of the first and second detection switches 2 and 3. Work will be less troublesome.

In this embodiment, the first detection switch
Although a non-contact type detection switch is used for 2 and a contact type detection switch is used for the second detection switch 3, as shown in FIGS. 3 and 4, the first and second detection switches 2, 3
The same effect can be obtained by using a non-contact type detection switch for both of them or a contact type detection switch.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described below based on. The members having substantially the same functions as those in the first embodiment are designated by the same reference numerals, and
Only the points different from the examples will be described.

In the first embodiment, the first and second detection switches 2 and 3 are arranged side by side on one surface of the body 1, whereas in the present embodiment, they are opposed to each other. It is arranged.

Specifically, the body 1 is formed in a substantially U-shape by the central piece 1b and the opposing pieces 1c, 1d. And the first detection switch 2 which is a non-contact type detection switch,
The second detection switch 3 which is a contact type detection switch is provided on the one facing piece 1c of the body 1 and the other facing piece 1d.
Each of them is arranged on each of the stand portions 1a protruding from each other, and the positions of the moving objects 10 are simultaneously detected. Also,
The first and second detection switches 2 and 3 are both detachable, and as shown in the circuit 30 of FIG. 7, the transistor 2a of the first detection switch 2 and the second detection switch 3 are Is connected in parallel with the contact portion 3a of and is connected to the load 30a.

In this detection switch device, as described above, if the opening / closing parts of the first or second detection switches 2 and 3 are connected in parallel, in addition to the effects of the first embodiment,
Or even if one of the second detection switches 2 and 3 fails,
Since the load 30a is opened / closed by the opening / closing section, which is arranged so as to detect the positions of the moving objects 10 at the same time and the other is connected in parallel, the reliability is high.

Further, since it is possible to remove and replace one of the detachable defective detection switches while the other non-failed detection switch is provided, it is not necessary to stop the equipment.

Next, a third embodiment of the present invention will be described with reference to FIGS.
It will be described below based on. The members having substantially the same functions as those in the first embodiment are designated by the same reference numerals, and
Only the points different from the examples will be described.

In the first embodiment, the distance between the first and second detection switches 2 and 3 is fixed, whereas in the present embodiment, it is adjustable.

Specifically, the body 1 does not have the base portion 1a, but is provided with a rail-shaped guide portion 1e from one end to the substantially central portion, and the first detection switch 2 is provided along the guide portion 1e. It can be moved, placed at an arbitrary position, and fixed by screwing. Therefore, the distance between the first and second detection switches 2 and 3 can be adjusted.

In such a detection switch device, the first
In addition to the effect of the embodiment, the first and second detection switches 2 and 3 whose distances are adjustable are provided with predetermined distances between them in order to correct the degree of overrun and the like. When it is necessary to make fine adjustments to the distance, fine adjustments can be made at the installation site, which is convenient.

Incidentally, the first and second detection switches 2, 3
As shown in FIG. 10, the configuration of the second embodiment that simultaneously detects the position of the moving object 10 and is detachable, and the configuration of the third embodiment in which the distance between them is adjustable,
May be provided together. In this case, the effects of the second and third embodiments can be obtained together.

Further, in each of the first to third embodiments, two detection switches are provided, but the number of detection positions may be increased and three or more detection switches may be provided.

[0029]

According to the first aspect of the present invention, since the plurality of detection switches are pre-wired between them and are arranged together in one body, work at the installation site is possible. It takes less time.

According to a second aspect of the present invention, in addition to the effect of the first aspect, when a plurality of detection switches are connected to a load in a state where respective switching parts for switching the circuit are connected in parallel, Even if any one of the detection switches fails, the remaining detection switches arranged to detect the position of the moving object at the same time open and close the load with the opening and closing part connected in parallel. Become.

According to a third aspect of the present invention, in addition to the effect of the first aspect, a plurality of detection switches whose distances are adjustable are arranged such that the distance between the detection switches is set to a predetermined distance. If you need to make adjustments, you can make fine adjustments at the installation site, making it easy to use.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment of the present invention.

FIG. 2 is a circuit diagram for connecting the same as the above.

FIG. 3 is a front view when a contact type switch is used as both of the two detection switches of the same.

FIG. 4 is a front view when a contactless type switch is used for both of the two detection switches of the same.

FIG. 5 is a front view of the second embodiment of the present invention.

FIG. 6 is a side view of the above.

FIG. 7 is a circuit diagram for connecting the same as above.

FIG. 8 is a plan view of a third embodiment of the present invention.

FIG. 9 is a front view of the above.

FIG. 10 is a front view showing a case where two detection switches are arranged on the upper and lower sides and the distance between them is adjustable.

FIG. 11 is a front view of a conventional example.

[Explanation of symbols] 1 Body 2 First detection switch 3 Second detection switch 10 Moving object 20 Circuit 30 circuit

Claims (3)

[Claims] 1. A plurality of detection switches for independently detecting a position of a moving object to open / close a circuit, and a body for arranging the detection switches together. Detection switch device. 2. The detection switch device according to claim 1, wherein the plurality of detection switches are arranged so as to simultaneously detect the position of the moving object. 3. The distance between each of the plurality of detection switches is adjustable.
The detection switch device described.