JPH062111Y2 - Reset device for microcomputer gas meter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention monitors the usage status of gas appliances from fluctuations in flow rate and time, and works in conjunction with a seismoscope to allow gas flow when it is determined to be dangerous. The present invention relates to a so-called microcomputer gas meter resetting device that shuts off the power supply.

[Prior Art] In a conventional microcomputer gas meter, a valve that has once operated does not reopen by itself, and therefore a reset operation is necessary to reopen it. As a means for resetting, a reset hole incorporating a reset screw is provided on the front surface of the microcomputer gas meter, and the valve that has been shut off by rotating the reset screw with a special tool or an ordinary flat screwdriver is reopened. It has the structure.

[Problems of the prior art] However, the resetting means requires a special tool or a flat-blade screwdriver for resetting, so that resetting is troublesome.

In particular, if a large number of gas meters are shut off at once due to an earthquake and it is necessary to reset the gas meters, there is a problem that if the reset operation takes time, the recovery will be delayed accordingly.

In addition, the position of the reset screw may be eccentric with respect to the reset hole depending on the device type, and in such a case, there is a problem that it is difficult for the tool or the driver to engage.

An object of the present invention is to propose a reset device which can be attached to a reset hole of an existing microcomputer gas meter and can be easily reset by rotating a knob even if a reset screw is eccentric.

[Means for Solving Problems] The structure of the present invention proposed as means for achieving the above object is as follows.

In the main body where the base part can be screwed or fitted into the reset hole, the engaging part is exposed from the base part and the driven shaft is incorporated so that it can oscillate and move in and out, and the drive shaft with a rotary knob is installed in the rear of the main body. A reset device for a microcomputer gas meter, wherein the driven shaft and the drive shaft are connected by a coil spring in the main body.

In the above apparatus, the engagement relationship between the reset screw on the gas meter side and the engagement portion of the driven shaft is free from the groove and the ridge that engages with this, but the structure is such that it is easy to engage only by pressing. desirable.

[Operation] In the above device, the base portion of the main body is screwed or fitted into the reset hole of the gas meter to be attached, and while rotating the knob, the rotation of the drive shaft is transmitted to the driven shaft via the coil spring and reset with the engagement portion. Explore the engagement relationship of the screws. Since this engagement is audible or responsive, if engaged, the knob is rotated in the reset direction to reset the shut-off emergency shutoff valve. The reset device may be installed in the reset hole of the gas meter as it is so that the reset operation can be performed at any time.

[Embodiment and Its Action] FIG. 1 shows the entire microcomputer gas meter equipped with a reset device according to the present invention. Reference numeral 1 denotes a reset device main body, and the main body 1 has a screw portion 3 which is screwed into a screw in the reset hole as a base portion as shown in FIG.
The tip member 2 is provided with an external screw 4 on the rear outer periphery, and the tip 7 side is fitted into the rear part 5 of the tip member 2, and the tip member 2 is fitted with a cap nut 8 screwed to the screw 4 of the tip member 2. The intermediate member 6 fixed to the
6 ', and a bearing member 9 with which a screw 9'is screwed.

Reference numeral 10 denotes a driven shaft having an engaging portion 11 formed at its tip, and the driven shaft 10 is supported by bearing plates 13 and 13 'in the tip member 2 and the intermediate member 6, and is freely swingable in a 360 ° direction. is there. The bearing plate 13 is a spring 13
The bearing plate 13 is biased forward by the action of a, and the bearing plate 13 is configured to engage with the driven shaft 10 only when the stopper 13b moves in the forward direction. It is always exposed from the tip of the tip member 2.

Reference numeral 14 denotes a rotation knob located outside the bearing member 9, from which a drive shaft 15 is inserted into the intermediate member 6 via the bearing member 9 and
The (knob 14) is biased inward by a spring 16.

A coil spring 17 connects the rear end side 12 of the driven shaft 10 and the front end side 18 of the drive shaft 15, and the winding direction of the coil spring 17 and the reset direction of the reset screw 20 are aligned. Therefore, when the knob 14 is rotated in the reset direction, the rotation is transmitted from the drive shaft 15 to the driven shaft 10 side via the coil spring 17, and the reset screw 20 can be rotated in the reset direction.

FIG. 3 shows the tip member 2 in the reset hole 22 of the gas meter 21.
In this state, the driven shaft 10 is rotated while rotating the knob 14 and the intermediate member 6, and the engagement relationship with the reset screw 20 is searched. Driven shaft 1
Since 0 is always pushed out, when the engaging portion 11 fits in the groove 20 'of the reset screw 20, the engaging portion 11 engages by itself, and this engagement can be recognized by a clicking sound or the feel of the knob 14. When the engaging portion 11 of the driven shaft 10 is engaged with the groove 20 'of the reset screw 20, the intermediate member 6 is moved to the front end member 2 using the cap nut 8.
And then turn knob 14 in the reset direction,
The cam 23 of the reset screw 20 rotates, and the shutoff valve 24 is opened (returned) by the action of the cam 23. This state is shown in FIG.

[Effects of the Present Invention] The present invention having the above-described configurations and operations can be expected to have the following effects.

a. In the case of an existing gas meter, it can be easily reset by attaching the device to the reset hole and turning the knob.

b. In the device, the driven shaft is allowed to oscillate freely in the direction of 360 °, so that even if the reset screw is not in the center of the reset hole and is slightly displaced, the driven shaft corresponds to this while eccentric, so that it does not take place. Absent.

c. By separating the driven shaft from the drive shaft and connecting them with a coil spring, the eccentric action described in b. Above can be performed smoothly, and the rotation of the knob is reliably transmitted to the driven shaft via the coil spring. it can.

d. When the gas meter is already installed, it can be used when it is newly installed, and it is also possible to leave it attached to the gas meter.

e. Since it is only necessary to attach a reset device to the reset hole of the gas meter and turn the knob in the reset direction, for example, even if many gas safety devices are activated and gas is cut off in many consumers during an earthquake, the reset work can be performed efficiently. As a result, recovery will be accelerated.

[Brief description of drawings]

FIG. 1 is a perspective view of a reset device according to the present invention installed in a reset hole of a microcomputer gas meter, FIG. 2 is an exploded perspective view of the reset device, and FIG. 3 is a view of a reset device installed in the reset hole. FIG. 4 is a sectional view showing a state in which the reset device is attached to the reset hole and the reset screw is turned by the knob. 1 ... Reset device body 2 ... Tip member 6 ... Intermediate member 8 ... Cap nut 9 ... Bearing member 10 ... Driven shaft 11 ... Engagement portion 13, 13 '... Bearing plate 14 ... Knob 15 ... Drive shaft 16 … Spring 17… Coil spring 20… Reset screw 20 ′… Groove 21… Microcomputer gas meter 22… Reset hole 23… Cam 24… Shut-off valve

Claims (1)

[Scope of utility model registration request] 1. A body, into which a base portion can be screwed or fitted in a reset hole, is provided with an engaging portion exposed from the base portion, and a driven shaft is incorporated therein so that it can be swung and moved in and out. A reset device for a microcomputer gas meter, comprising a drive shaft, wherein the driven shaft and the drive shaft are connected by a coil spring in a main body.