JPS6348917Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a mounting device for a sensor such as a photoelectric switch, and particularly to a mounting device that allows the set position of the sensor to be changed arbitrarily.

Conventional Technology Sensors such as photoelectric switches used in various automatic devices often have to be adjusted by changing their setting position in response to changes in the detection target member or detection area. . For this reason, conventional sensor mounting devices of this type include screw-type devices in which the set position of the sensor can be moved in the axial direction of the shaft by rotation of the screw shaft, or a sensor mounting device with a long sensor mounting plate. A set screw type sensor is often used in which the set position of the sensor can be changed within the length range of the elongated hole by drilling a hole and loosening a fixing wing nut threaded onto a bolt that passes through the hole. ing.

Problems that the invention aims to solve However, with the former type, the operation of turning the screw is complicated and difficult to operate when the sensor has a large amount of movement, and with the latter type, it is difficult to loosen the thumbscrew. There were drawbacks such as the cumbersome work of tightening and the difficulty of making accurate fine adjustments.

In view of the above-mentioned points, this invention aims to provide a structure of a sensor mounting device that allows the setting position of the sensor to be changed and adjusted extremely easily and accurately with a single touch.

Means for Solving the Problems For the above purpose, this invention has a guide rod 1 of a predetermined length that is slidable along its length and restrained from relative displacement in directions other than the length direction. The sensor mounting plate 3 is assembled in the state, and this mounting plate 3
The sensor S is attached to the same mounting plate 3.
and a fixing push plate 11 which is normally movable forwards and backwards and which elastically presses against the guide support rod 1 to hold the sensor mounting plate 3 in a predetermined position by the biasing force of a push spring 12.
and a lever handle 14 that releases the fixation of the sensor mounting plate 3 by retracting the fixing push plate 11 against the push spring 12. The gist is:

Embodiments This invention will be described below with reference to illustrated embodiments.

Figure 1 shows one specific example of how to use a sensor using the mounting device according to this invention.
In a strain relief device for a coil C made of aluminum material A, sensors S and S consisting of a pair of light emitting/receiving type photoelectric switches are installed on both sides of the spool SP of the coil C on the unwinding side, facing slightly above it. The proximity of the coil C when unwinding is completed is detected by the passage of light between the two sensors S, and an alarm is issued. In such a detection device, sensors S,
The setting position must be changed in the vertical direction of the diagram. This invention provides a sensor mounting device that can conveniently meet such requirements.

The structure of the sensor mounting device of the embodiment is shown in detail in FIGS. 2 and 3.

In these figures, reference numeral 1 denotes a guide rod having a predetermined length and a substantially U-shaped cross section, and a pair of guide grooves 2, 2 having a V-shaped cross section are carved on opposing surfaces of both front side walls. has been done. Reference numeral 3 denotes a sensor mounting plate having a substantially rectangular shape, and by fitting correspondingly shaped side edges into the guide grooves 2, 2, it can freely slide in the length direction with respect to the guide support rod 1, and can It is assembled in such a way that relative displacement in the direction is restrained. and,
A phototube or other sensor S is attached to the upper front surface of this sensor mounting plate via an L-shaped bracket 4.

Reference numeral 6 denotes a stopper mounting base whose base end is fixed to the lower central part of the sensor mounting plate 3 with a bolt 7, and an upwardly protruding part 6a is formed on the upper surface of the distal end, and a downwardly extending portion 6a is formed on the lower surface of the distal end. A fixed handle 8 that hangs down is integrally provided. 9 is a bush whose one end is fixed to the upper protrusion 6a;
0 is a stopper shaft that is loosely passed through this and is movable in the axial direction, and has a non-slip plate 11 such as a rubber plate at the tip.
It has a fixing press plate 11 to which a is attached, and a press spring 12
By constantly elastically pressing the push plate 11 against the front surface of the guide support rod 1 with the urging force of , the sensor mounting plate 3
It is designed to hold the holder in a fixed position. Reference numeral 13 denotes a spring receiver having a U-shaped longitudinal section, whose open end is fitted into the bush 9, and if necessary, by moving this in the axial direction, the spring receiver 12
The biasing force can be adjusted.

14 is a pivot 1 at the tip of the stopper mounting base 6.
5 is a swinging lever handle for releasing fixation, which is located in a downwardly expanded shape together with the fixed handle 8, and together constitutes a so-called grip handle. The upper end of the swing lever handle 14 is brought into contact with the upper protrusion 6a of the stopper mounting base 6 at a position above the pivot 15, and the large-diameter head 10a of the stopper shaft 10 is engaged with the outer surface of the upper end. ing. Therefore, the swing lever handle 14
By grasping it so as to pull it toward the fixed handle 8 side, the stopper shaft 10 resists the push spring 12.
is moved backward to release the press plate 11 from the guide support rod 1.

In FIG. 2, 16 is a scale provided on the guide rod 1, and 17 is an indicator piece attached to the sensor mounting plate 3 facing this.

In the above device, when changing the set position of the sensor S, hold the lever handle 14 together with the fixed handle 8 and swing it about the pivot 15 in the direction of arrow A in FIG. The pressure contact between the plate 11 and the guide rod 1 is released. This releases the fixation of the sensor mounting plate 3 to the guide rod 1, so both handles 8, 14
While grasping the scale 16, move the sensor mounting plate 3 up and down along the guide rod 1 to a desired position. After the sensor S has been moved to the desired detection position in this way, if you let go of the handles 8 and 14, the push plate 11 is pressed against the guide rod 1 again by the biasing force of the push spring 12, so that it remains in that position. This makes it possible to reproduce the fixed state of the sensor S.

The device according to this invention includes a sensor consisting of a phototube as shown in the figure, as well as various detection members,
It can also be applied to the installation of limit switches, etc.

Effects of the invention According to this invention, as is clear from the description of the embodiments above, the setting position of the sensor S can be changed quickly and easily with one touch or one hand using the handle 14 in conjunction with a change in the detection position of the sensor S. Go,
It is easy to operate for both fine and large adjustments, significantly improving work efficiency compared to conventional devices of this type, and is particularly convenient as a sensor mounting device for applications where the detection position is frequently changed. It is.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an example of installation and use of the device according to this invention, FIG. 2 is a front view of the embodiment, FIG. 3 is a longitudinal sectional view thereof, and FIG. 4 is a plan view. 1... Guide support rod, 2... Guide groove, 3... Sensor mounting plate, 8... Fixed handle, 10... Stopper shaft, 11... Push plate, 12... Push spring, 14...
...Swinging lever handle, 15... Pivot, S... Sensor.

Claims (1)

[Scope of utility model registration request] A sensor mounting plate 3 is attached to a guide rod 1 having a predetermined length so as to be able to freely slide along its length, but with relative displacement restrained in directions other than the length direction. The sensor S is attached to the mounting plate 3, and the mounting plate 3 is normally movable to move forward and backward by elastically pressing against the guide rod 1 to hold the sensor mounting plate 3 in a predetermined position. A photoelectric switch, etc., comprising a fixing push plate 11 and a lever handle 14 for retracting the fixing push plate 11 against the push spring 12 to release the fixation of the sensor mounting plate 3. sensor mounting device.