JPH0643953Y2 - Limit Stopper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention mainly relates to a limit stopper attached to an XY loading device, a rotary loading device, an indexing device or the like for use.

(Prior Art) Conventionally, when a stop point for stopping a movable body such as a work or a work jig is obtained as a signal, a means for directly mounting a limit switch has been adopted.

However, when the limit switch is directly attached to the limit switch, there is a defect that it is difficult to adjust the position of the signal contact and to attach the limit switch.

According to Japanese Utility Model Laid-Open No. 53-46581, a core wire position adjusting member (reference numeral 16 in the publication) of a push-pull wire (reference numeral 3 in the publication) is provided, and a push button (reference numeral 2 in the publication) is provided. There is disclosed an electric switch whose size can be adjusted between the push button operation unit (reference numeral 39 in the publication), and this type of switch has a push button (reference numeral 2 in the publication) and push button operation. Since the push-pull wire is bendable even if the dimension between the portion (reference numeral 39 in the publication, reference numeral 39) is adjusted by the core wire position adjusting member, accurate securing of the dimension cannot be expected.
It is not suitable for applications such as workpieces and workpiece jigs that stop the movable body to perform position control.

(Problems to be Solved by the Invention) The present invention is applied to a case where a movable body such as a work or a work jig is stopped to perform position control, for example, when the work is attached to an XY loading device, a rotary loading device, an indexing device, or the like. It is an object of the present invention to provide an extremely suitable new limit stopper that does not have difficulty in adjusting the signal contact position and mounting it on a device.

(Means for Solving the Problem) In order to achieve the above-mentioned object, a limit stopper according to the present invention is a case 3 having a connecting terminal 1, 1'at an outer end and a first male screw portion 2 at an inner end. Built-in switch mechanism,
A limit switch 6 is formed by penetrating the tip of the movable rod 4 of the switch mechanism to the tip of the male screw portion 2, and a cushion spring 5 is connected to the penetrating end, and a tightening nut 8 around the first male screw portion 2. Of the bearing 7 fixed by screwing the outer ring 7'of the bearing 7 into the outer end of the bearing 7 in a non-removable and non-rotatable manner to connect the limit switch 6, and to the inner circumference of the inner end of the female screw portion 9 '. And a second male screw 11 is engraved on the outer peripheral surface of the pipe body 10 and the tip portion of the second male screw 11 is screwed into the female screw portion 9 and connected to the inner end of the pipe body 10. The mounting screw rod 12, and the large diameter hole 13 and the small diameter hole 14 which are bored in a state of communicating with the inner end surface and the outer end surface of the mounting screw rod 12.
And the head portion 15 is engaged with the step portion 17 formed between the large diameter hole 13 and the small diameter hole 14 in the small diameter hole 14, and at the time of the engagement, the tip end of the contact rod 16 is a mounting screw rod. The contact rod 16 inserted into the outer end face of 12 in a slightly protruding state, and the inner end face between the head 15 and the cushion spring 5 in the large diameter hole 13 is the outer end face of the head 15 and the outer end face is the cushion. The transmission rod 18 is loosely fitted to the inner end of the spring 5 in a state of being pressed against each other, and the inner nut 19 and the outer nut 20 are screwed to the mounting screw rod 12, respectively.

(Operation) Since the limit stopper according to the present invention is as described above, as shown in FIG. 3, the mounting screw rod 12 is inserted into the mounting hole 21 provided in the mounting location and the outer nut 20 is screwed. When the projecting end 16 'of the contact rod 16 is pushed by the contact of a movable body such as a work or a work jig during the mounting, the transmission rod 18 and the cushion are used. The spring 5 and the movable rod 4 are the third
The switch mechanism of the limit switch 6 is moved as shown by a virtual line in the figure to perform an on / off switching operation, that is, the on / off switching operation is utilized as an electric signal to move the work, the work jig or the like movable body. It can be used for the construction of an electric circuit such as turning off instantaneously.

(Effect of the device) The limit stopper according to the present invention has a mounting screw rod 12
There is a simple effect that it can be attached to the mounting location by performing the step of drilling the mounting hole 21 that inserts the through hole and the step of tightening the outer nut 20. When adjusting the position (signal contact position), the screwing position of the female screw portion 9 and the second male screw 11, the screwing position of the inner nut 19 and the second male screw 11, the outer nut 20 and the second male screw There is the convenience that is possible by appropriately changing the screwing position of 11, and it is necessary to rotate the pipe body 10 at the time of adjusting the position of the ON / OFF switching operation point (adjusting the signal contact position). Also, since the bearing 7 is provided, the position adjusting device can be constructed without rotating the limit switch 6, that is, the connecting terminal 1,
There is no fear of twisting the lead wire connected to 1 ', and the structure is a mechanical type consisting of non-foldable parts, so the position of the on / off switching operating point, that is, the stopping accuracy is extremely good. Therefore, the movable body such as the work and the work jig is stopped to perform the position control, for example, XY
It is extremely suitable when used by being attached to a loading device, a rotary loading device, an indexing device, or the like.

(Embodiment) In the embodiment shown in the drawings, a switch mechanism (not shown) is built in a case 3 having a connecting terminal 1, 1'at the outer end and a first male screw portion 2 at the inner end, and 1 Limit switch 6 having a structure in which the tip of the movable rod 4 of the switch mechanism is penetrated through the tip of the male screw portion 2 and the cushion spring 5 is connected to the protruded end.
The bearing 7 is fixed around the base end of the first male screw portion 2 by screwing a tightening nut 8, and separately from this, a female screw portion 9 is provided on the inner circumference of the inner end portion. Pipe body 10
The outer ring 7 ′ of the bearing 7 is pulled out and fitted into the outer end portion of the pipe body 10 so as not to rotate, and the limit switch 6 is connected to the pipe body 10. Mounting screw rod with second male screw 11 engraved on the outer peripheral surface
12 are connected by screwing the tip portion of the second male screw 11 and the female screw portion 9, and a large diameter hole 13 is formed on the inner end surface of this mounting screw rod 12 and a small diameter hole 14 is also formed on the outer end surface thereof. The small-diameter hole 14 is formed in a state where the small-diameter hole 13 and the small-diameter hole 14 communicate with each other.
A small-diameter contact rod 16 having 15 is inserted from the side of the large-diameter hole 13 to form a short columnar head portion 15 between the large-diameter hole 13 and the small-diameter hole 14.
And the tip of the contact rod 16 slightly protrudes to the outer end surface of the mounting screw rod 12 at the time of the engagement, and between the short columnar head 15 and the cushion spring 5 in the large diameter hole 13. The transmission rod 18 is loosely fitted, and the inner nut 19 is attached to the mounting screw rod 12.
And the outer nut 20 and the inner nut 19 are the pipe body.
The outer nut 20 is pressed against the base end face of 10 and the outer nut 20 is a mounting screw rod.
It is screwed in a state in which the position can be changed to 12.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of a limit stopper of the present invention, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is a sectional view taken along line AA of FIG. 1, 1 '... Terminal, 2 ... First male screw part, 3 ... Case, 4 ... Movable rod, 5 ... Cushion spring, 6 ... Limit switch, 7 ... Bearing, 8 ... Tightening nut,
9 ... Female screw part, 10 ... Pipe body, 11 ... Second male screw,
12 …… Mounting screw rod, 13 …… Large hole, 14 …… Small hole, 15
...... Head, 16 ...... Contact rod, 16 '…… Projecting end, 17 …… Step, 18 …… Transmission rod, 19 …… Inner nut, 20 …… Outer nut, 21 …… Mounting hole.

Claims (1)

[Scope of utility model registration request] 1. A switch mechanism is built in a case 3 having connecting terminals 1, 1'at the outer end and a first male screw portion 2 at the inner end, and the switch mechanism is movable at the tip of the male screw portion 2. The limit switch 6 is formed by penetrating the tip of the rod 4 and connecting the cushion spring 5 to the penetrating end, the bearing 7 fixed by screwing a tightening nut 8 around the first male screw portion 2, and The outer ring 7'of the bearing 7 is fitted in the end portion in a non-removable and non-rotatable manner to connect the limit switch 6, and a pipe body 10 in which a female screw portion 9 is engraved on the inner periphery of the inner end portion, and an outer peripheral surface. A second male screw 11 is engraved on the second male screw 11, and the tip portion of the second male screw 11 is screwed into the female screw portion 9 and connected to the inner end of the pipe body 10. Inside the small-diameter hole 14 and the large-diameter hole 13 and the small-diameter hole 14 that are bored so as to communicate with the inner and outer end surfaces of 12 The state in which the portion 15 is engaged with the step portion 17 formed between the large diameter hole 13 and the small diameter hole 14, and the tip end of the contact rod 16 is slightly projected to the outer end surface of the mounting screw rod 12 at the time of the engagement. State in which the inner end face is pressed against the outer end face of the head 15 and the outer end face is pressed against the inner end of the cushion spring 5 between the head 15 and the cushion spring 5 in the large diameter hole 13 and the contact rod 16 inserted as Transmission rod 18 loosely fitted with
And an inner nut 19 and an outer nut 20 screwed to the mounting screw rod 12, and a limit stopper.