JPS6227889Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting bracket for attaching a disk rotation speed detection device to a power meter.

When performing a performance test by detecting the number of revolutions of a disc in a power meter, a disc is a device that directs a beam of light from a light emitter to an indicator on a rotating disc and receives changes in reflected light using a light receiving element. It has been used conventionally as a rotation speed detection device. In an inspection process in a manufacturing factory, such a disk rotation speed detection device is fixed at a fixed position at a certain distance from the front or upper and lower surfaces of the watt-hour meter. On the other hand, when checking the rotation speed and measured values of a power meter installed at a consumer at a later date, the disc rotation speed detection device must be portable and easily attached to the front of the power meter. Must be. Conventionally, in such cases, the disk rotation speed detection device has been attached to the watt-hour meter with a rubber band. However, it is necessary to prepare several types of rubber bands depending on the size of the electricity meter, and because the tension of the rubber bands decreases due to deterioration, it is necessary to replace them frequently.

The purpose of this invention is to enable the disc rotation speed detection device to be easily attached to and removed from an existing watt-hour meter regardless of the size of the watt-hour meter, and to provide a disc rotation speed sensor that is highly durable and easy to carry. Another object of the present invention is to provide a detection device mounting bracket.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a disk rotation speed detection device 2 is attached to the front surface of a power meter 3 using a mounting bracket 1 according to the present invention. The mounting bracket 1 includes a mounting plate 4, a shaft adjustment bracket 6 rotatably attached to both ends of the mounting plate 4 by hinges 5 (FIG. 4), and a shaft adjustment bracket 6 slidably inserted into the shaft adjustment bracket 6. and a slide shaft 7. The mounting plate 4 alone is shown in FIG. An engagement hole 8 and a snap lock 9 are used as fixing means for detachably fixing the disc rotation speed detection device 2 to the front side of the mounting plate 4.
will be provided. The light beam passing hole 10 allows the light beam emitted and received by the disk rotation speed detection device 2 to pass therethrough. The indicator line 11 is used to match the height of the disc of the watt-hour meter 3, and the confirmation hole 12 is used to confirm that the light beam is hitting the indicator on the disc. The fixing means is not limited to the engagement hole 8 and the snap lock 9, but other appropriate fixing means can be used. A rubber buffer member 13 is attached to the back surface of the mounting plate 4, as shown in FIG. The buffer member 13 comes into contact with the glass surface of the electricity meter 3, and prevents the glass surface from being broken or scratched. As the buffer member 13, a spring or the like may be used.

The slide shaft 7 is inserted into a groove 15 provided in the main body 14 of the shaft adjustment fitting 6, as shown in FIG. 3, and is held down by a lid 16. Screw 1 on the lid 16
7 is screwed in, and by tightening the screw 17, the slide shaft 7 is fixed to the shaft adjustment fitting 6.
At the rear end of the slide shaft 7, there is a cover edge 1 of the electricity meter 3.
A hook part 19 is provided to be caught on the shaft adjustment fitting 8, and a stopper part 20 is provided at the front end to prevent the shaft adjustment fitting 6 from falling off.

The disk rotation speed detection device 2 is shown in FIGS. 5 and 6. A light emitting element, a light receiving element, etc. are housed inside, and one pulse is sent to the external output line 2 for each rotation of the disk of the wattmeter 3.
Output from 1. The check clamp 22 blinks every time one pulse is output, and the sensitivity adjustment screw 2
3 is for changing the resistance value of the sensitivity adjustment resistor. The disk rotation speed detection device 2 has a light projecting hole 24 and a light receiving hole 25, as shown in FIG. Further, an engagement piece 26 that engages with the engagement hole 8 of the mounting plate 4 and a catch 27 that engages with the snap lock 9 are attached.

When attaching the disk rotation speed detection device 2 to the electricity meter 3, the disk rotation speed detection device 2 is first attached to the mounting bracket 1. For this purpose, the engagement piece 26 is inserted into the engagement hole 8, Once engaged, the catch 27 is fixed with the snap lock 9. At this time, it goes without saying that the light projecting hole 24 and the light receiving hole 25 coincide with the light passing hole 10. Next, attach the mounting bracket 1 to the power meter 3
Attach to. The mounting plate 4 is placed against the front glass surface of the watt-hour meter 3 and positioned so that the disc and the indicator line 11 are at the same level. At that position, it is confirmed through the confirmation hole 12 that the light beam projected from the disk rotation speed detection device 2 hits the indicator on the disk. While holding the mounting plate 4 in the determined position, extend the left and right slide shafts 7, 7, hook the hook 19 on the lid edge 18 of the electricity meter 3, and then move the slide shafts 7, 7 as far as possible toward you. and screws 17, 17
to fix the slide shafts 7, 7 to the shaft adjustment fittings 6, 6. In this way, the disk rotation speed detection device 2 is attached to the power meter 3. Each time the disk rotates once, the check clamp 22 flashes and a pulse is output from the external output line 21. By counting this pulse with a counter, the number of rotations of the disk is counted, and in other words, the amount of electricity is measured. be done.

Since the power meter 3 has a different size, the mounting plate 4
The length is determined to be equal to the width of the largest watt-hour meter 3, and the length is set equal to the width of the largest watt-hour meter 3, and from the front of the retaining part 20 of the slide shaft 7 to the hook part 1.
It is desirable that the length to the end of 9 be equal to the dimension from the glass surface of the largest watt-hour meter 3 to the lid edge 18. However, there is no problem even if the length is set longer than this, and it may be set somewhat shorter.
If the power meter 3 is small in shape, it can be mounted in the same way by simply bending the shaft adjustment fittings 6, 6 to the mounting plate 4 at an angle smaller than 90 degrees with the hinges 5, 5.

As for the mounting order, as shown in FIG. 7, only the mounting bracket 1 may be first mounted on the watt-hour meter 3, and then the disk rotation speed detection device 2 may be fixed to the mounting bracket 1.

In the present invention, the mounting plate to which the disc rotation speed detection device is removably fixed is hooked onto the lid edge of the electricity meter using the shaft adjustment fitting and slide shaft. The disc rotation speed detection device can be easily attached to and detached from the power meter. The angle of the shaft adjustment fitting relative to the mounting plate can be changed depending on the size of the watt-hour meter, and the distance between the hook at the rear end of the slide shaft and the mounting plate can be changed by sliding the slide shaft. Therefore, it can be installed regardless of the size of the watt-hour meter. Furthermore, since the slide shaft is fixed to the shaft adjustment fitting with a screw, there is no need to worry about a reduction in tension due to deterioration of conventional rubber bands, and durability can be increased. The mounting bracket and the disk rotation speed detection device can be separated separately, and the shaft adjustment bracket can be folded with a hinge and overlapped with the mounting plate, so the storage space can be reduced. It can be easily carried. Due to the elasticity of the buffer member, the mounting bracket can be more tightly attached to the watt-hour meter, and since the mounting plate does not come into direct contact with the glass surface of the watt-hour meter, there is no risk of damage to the glass surface.
Can prevent injury.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the mounting state using the mounting bracket according to an embodiment of the present invention; Fig. 2 is a front view of the mounting plate;
Fig. 3 is a perspective view of the shaft adjustment fitting and slide shaft, Fig. 4 is a perspective view from behind of an embodiment of the present invention, Fig. 5 is a perspective view of the disk rotation speed detection device, and Fig. 6 is a circular FIG. 7 is a front view of the plate rotation speed detecting device and a perspective view showing only the mounting bracket according to an embodiment of the present invention attached to a watt-hour meter. 1...Mounting bracket, 2...Disc rotation speed detection device,
3...Power meter, 4...Mounting plate, 5...Hinge, 6
...Shaft adjustment fitting, 7...Slide shaft, 8...Engagement hole, 9...Put-in lock, 10...Light beam passage hole, 1
3...Buffer member, 17...Screw, 18...Lid edge,
19...Hook part.

Claims (1)

[Scope of utility model registration request] It has a fixing means for removably fixing the disk rotation speed detection device on the front side, and is provided with a light beam passing hole through which the light emitted and received by the disk rotation speed detection device passes,
A mounting plate with a buffer member on the back that comes into contact with the glass surface of the electricity meter, a shaft adjustment bracket rotatably attached to both ends of the mounting plate with hinges, and a shaft adjustment bracket that is slidably inserted into the shaft adjustment bracket. A mounting bracket for a disk rotation speed detection device, which comprises a slide shaft that is attached to the shaft, is fixed to the shaft adjustment bracket with a screw, and has a hook portion at the rear end that is hooked to the lid edge of a power meter.