JPH1139992A - Stopper with switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mitigate abutting impact by a detection body to a stopper by making a detection body touch an actuator protruding to the maximum from a stopper face provided on a housing end face and standing still so that the actuator is pushed and is displaced so as to operate first switch, and operating second switch before the first switch is further displaced to touch a stopper end face. SOLUTION: When a detection body A is moved rightward so as to abut the contact 4a of an actuator 4 and the actuator 4 is slightly displaced rightward, a first moving contact 6 is parted from a first fixed contact 8, and a first switch circuit is turned off via conductors 8a, 5a so that the detection body A is decelerated by this OFF signal. When the detection body A is further displaced rightward so that the left end portion of the actuator abuts and pushes a second moving contact 10 so as to part from second fixed contact 9, a second switch circuit is turned off via conductors 9a, 12a so that the detection body A is stopped or reversing controlled by this OFF signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper member for stopping a detection body at a predetermined position when the detection body comes into contact, and a stopper with a switch in which a plurality of switches for outputting a signal before the stop are combined. .

[0002]

2. Description of the Related Art Conventionally, a detection object (for example, a table on which a workpiece or an object to be measured is placed) is brought into contact with a stopper member such as a positioning bolt to stop the detector at a predetermined position. Have been.

[0003] Japanese Patent Application No. Hei 7-23754 filed by the present applicant.
No. 4 discloses an invention in which switch means is embedded in a stopper member such as a positioning bolt, and a control signal is transmitted just before the detection body comes into contact with the stopper member. Further, Japanese Patent Application No. 8-355529 filed by the present applicant describes an invention in which the above-mentioned Japanese Patent Application No. 7-237544 is modified to have a shape having a greater dustproof and waterproof effect.

In the configuration according to the above-mentioned conventional invention, the switch means outputs a signal shortly before the detection member comes into contact with the stopper member to serve as a confirmation signal for stopping the detection member, or the detection member detects the stopper. A signal for inverting operation after contact with the member is provided.

[0005]

Since the detection body has a predetermined inertia, if it comes into contact with the stopper member while operating at a predetermined displacement speed, the impact is too large. Before the operation of the switch immediately before the detection body stops contacting the stopper member, a proximity signal indicating that the detection body has approached the stopper member is generated to reduce the displacement speed of the detection body. In order to absorb the impact of the body contacting the stopper member, it was necessary to provide a shock absorber. The switch means or the shock absorber means for generating the proximity signal has to be separately attached by a user or the like, which is troublesome to attach and the adjustment of the operation position is troublesome.

[0006]

In order to solve the above-mentioned problems, a stopper with a switch according to the present invention is built in a male screw housing having a stopper surface provided on an end surface, in a circular hole formed in the center line direction. The first and second switch means, and an actuator which is slidable on the center line of the circular hole and protrudes from the stopper end face so as to sequentially operate the first and second switch means. The detection body comes into contact with a position of the actuator that protrudes to a maximum from the stopper end surface and stops, and the actuator is slightly displaced, whereby the first switch means is operated, and the detection body is further moved. Before the detector is displaced while pressing the actuator, and before the detection body comes into contact with the stopper end face, the second switch means is pressed by the actuator to operate. It is obtained by the door so.

The first switch detects the approach of the detection object, and the first switch performs a signal for controlling the deceleration of the movement of the detection object, and the second switch controls stop or inversion of the detection object. To output a signal for the purpose.

[0008]

FIG. 1 is a front view in which a stopper with a switch according to an embodiment of the present invention is sectioned along a center line, FIG. 2 (a) is a left side view of FIG. 1, and FIG. FIG. 1C is a side view of the BB section of FIG. 1, and FIG. 1C is a side view of the CC section of FIG.

In FIG. 1, 1 is a stopper main body with a switch, 2 is a housing thereof, 2a is a male screw portion provided on the outer periphery of the housing 2, and 2b is a shape such that the male screw 2a can be rotated with a spanner, for example, a hexagonal shape (see FIG. 2c) is a stopper end face at the left end of the head 2b.

A cylindrical hole 2d is formed in the housing 2, and a sleeve 3 made of an insulating material is fixed.
A rear bearing 5 made of a conductive material of the actuator 4 is fixed to the inner diameter step 3a substantially at the center of the sleeve 3. The actuator 4 forms a sliding shaft made of an insulating material, and is provided with a hard material contact 4a at the left end thereof, and a pin-shaped first movable as shown in FIG. The contact 6 is fixed, the actuator 4 is fitted into the rear bearing 5 with the first compression spring 7 made of a conductive material inserted, and the front bearing of the actuator 4 is attached to the left end 3 b of the sleeve 3. The first fixed contact 8 having an annular shape is fixed.

At the right end 3c of the sleeve 3, a pin-shaped second fixed contact 9 penetrates the side wall of the right end 3c so that the tip is directed toward the center of the sleeve 3, and is fixed to the side wall. The second movable contact 10 having a spherical shape is slightly loosely fitted into the hole 3d, and a push shaft 12 made of a conductive material is screwed in after inserting a second compression spring 11 made of a conductive material. is there.

FIG. 1 shows the assembled state as described above, wherein the first movable contact 6 is pressed by the pressing force of the first compression spring 7 between the left end of the rear bearing 5 and the first movable contact 6. 1 fixed contact 8, that is, the first switch means is ON
The state is maintained. Also, the state in which the second movable contact 10 is in contact with the second fixed contact 9 by the pressing force of the second compression spring 11 between the left end of the push shaft 12 and the second movable contact 10, ie, the second switch means Maintains the ON state.

The conductor 8a of the first fixed contact 8 is soldered to a groove 8b provided on the outer periphery of a ring forming the first fixed contact 8, and the conductor 8a is formed by a cutout 3e (see FIG. 2 (b)) to a control unit (not shown). The first movable contact 6 is electrically connected to the rear bearing 5 via the first compression spring 7, and a hole 3 f provided in the notched portion 3 e of the sleeve 3 is provided on the outer periphery of the rear bearing 5.
The conducting wire 5a passing through is soldered, and the conducting wire 5a is connected to a lead wire 13 leading to a control unit. A conductor 9a is soldered to the second fixed contact 9, and the conductor 9a is a cutout 3f of the right end 3c of the sleeve 3 (see FIG. 2C).
Through a lead 13 which leads to a control unit.
The second movable contact 10 is electrically connected to the push shaft 12 via the second compression spring 11, the conductor 12 a is soldered to the rear bearing 5, and the conductor 12 a is connected to the lead 13 leading to the control unit. I have.

Next, the operation will be described. In FIG. 1, the detection object A moves rightward (in the direction of the arrow) and the actuator 4 moves.
When the actuator 4 is slightly displaced rightward, the first movable contact 6 separates from the first fixed contact 8 and the conductor 8a, the first fixed contact 8,.
Since the circuit of the first switch that reaches the first movable contact 6, the first compression spring 7, the rear bearing 5, and the conductor 5a is turned off,
The transfer of the detection object A is decelerated by the OFF signal.

Further, when the detection body A is displaced rightward and the actuator 4 is further displaced rightward, when the left end portion 4b of the actuator is pressed against the second movable contact 10, the second movable contact 10 is moved to the second movable contact 10. 2 and the conductor 9
a, the second switch circuit reaching the second fixed contact 9, the second movable contact 10, the second compression spring 11, the push shaft 12, and the conducting wire 12a is turned off.
Stop or reverse control.

According to the embodiment shown in FIGS. 1 and 2, the first switch means and the second switch means are switches which are always on and are turned off with the displacement of the actuator. Is required to be a switch of a type in which the above two switch means are always OFF and are turned ON with the displacement of the actuator, or any one of the switch means is always ON and the other switch is always OFF May be desired.

FIG. 3 shows a principle diagram of a circuit for converting the always-on format to the always-off format. S is a switch of the always-on format, T is a PNP transistor, R is a resistor, Z is a control circuit, and V is a power supply. When the switch S which is always on is turned off, the control circuit Z which has been always off is turned on.

The present invention is not limited to the above-described embodiment, and various changes can be made without departing from the spirit of the present invention.

[0019]

The stopper with a switch according to the present invention detects the approach of the detection object, and outputs a signal for controlling the deceleration of the movement of the detection object by the first switch means and the detection object by the second switch means. Signal for controlling the stop or reversal of the motor can be output. Conventionally, two switch means had to be set separately or a shock absorber had to be provided. Since the stopper can also be used, the overall cost is reduced and the user's installation and adjustment work is reduced.

[Brief description of the drawings]

FIG. 1 is a front view in which a stopper with a switch is sectioned along a center line.

2A is a left side view of FIG. 1, and FIG.
FIG. 2C is a side view of a cross section B, and FIG.

FIG. 3 is a diagram illustrating the principle of a circuit for converting an always-on format to an always-off format.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stopper main body with switch 2 Housing 2a Male thread part 2b Head 2c Stopper end face 3 Sleeve 4 Actuator 4a Contact 6 First movable contact 8 First fixed contact 9 Second fixed contact 10 Second movable contact A Detector

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[Procedure amendment]

[Submission date] January 26, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

Since the detection body has a predetermined inertia, if it comes into contact with the stopper member while operating at a predetermined displacement speed, the impact is too large. Means are provided for generating a proximity signal indicating that the detection body has approached the stopper member to reduce the displacement speed of the detection body before the operation of the switch immediately before the detection body stops contacting the stopper member. or, in order to detect body to absorb the impact contact with the stopper member, it was necessary to provide a shock absorber means. The switch means or the shock absorber means for generating the proximity signal has to be separately attached by a user or the like, which requires time and effort and the adjustment of the operation position is troublesome.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

A cylindrical hole 2d is formed in the housing 2, and a sleeve 3 made of an insulating material is fixed.
A rear bearing 5 of the actuator 4 is fixed to the inner diameter step 3a substantially at the center of the sleeve 3 , and this rear bearing 5 is
Ing a conductive material. The actuator 4 forms a sliding shaft made of an insulating material, and is provided with a hard material contact 4a at the left end thereof, and a pin-shaped first movable as shown in FIG. The contact 6 is fixed, the actuator 4 is fitted into the rear bearing 5 with the first compression spring 7 made of a conductive material inserted, and the front bearing of the actuator 4 is attached to the left end 3 b of the sleep 3. The first fixed contact 8 having an annular shape is fixed.

Claims (2)

[Claims] 1. A male screw housing having a stopper surface provided on an end surface thereof, a first screw hole built in a circular hole formed in a center line direction of the housing.
And a second switch means, and an actuator slidably on the center line of the circular hole and protruding from the stopper end face so as to sequentially operate the first and second switch means. The detection body comes into contact with a position where it protrudes from the stopper end surface to the maximum and comes to rest, and the actuator is slightly displaced, so that the first switch means is operated. A stopper with a switch, wherein the second switch means is operated by being pressed by the actuator before the detection body is displaced while being pressed and the detection body comes into contact with the end face of the stopper. 2. The method according to claim 1, further comprising detecting an approach of said detection object and detecting said first object.
2. The switch with a switch according to claim 1, wherein the switch outputs a signal for controlling deceleration of the movement of the detection object, and the second switch outputs a signal for stopping or reversing the detection object. Stopper.