JPH0645208Y2 - Rotation indicator rotation amount measuring instrument fixture - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is to measure the rotation amount of a rotation index used to measure the rotation amount of a rotation index including the pointer of a meter such as a water meter from outside the meter. Concerning the equipment fixture.

[Conventional technology]

The water meter measures the amount of water used, but in order to smoothly supply water, it is necessary to know not only the total amount used but also the amount used for each time period. Therefore, the amount of rotation of a rotation index such as a pointer is measured from the outside and data is obtained for each time. As described above, in order to measure the rotation amount of the rotation index from the outside, a measuring device such as a photoelectric switch is used,
Such a measuring device needs to be integrally fixed to the water meter, and therefore, it is generally fixed to the water meter itself.

[Problems to be solved by the device]

However, since the water meter used has a different diameter depending on the amount of water flowing through the metering unit, the size of the display portion varies according to the change in the diameter. That is, the diameter of the display portion and the distance from the display surface made of glass or the like to the rotation index differ depending on the aperture. For this reason, when the above-mentioned measuring instrument is attached to this display portion, it is necessary to prepare a unique fitting suitable for the size of these display portions for each water meter having each diameter.
However, if a large number of fixtures must be prepared in this way, a situation in which only fixtures that do not fit at the time of work are prepared, or a large number of fixtures must always be carried in order to prevent this There was a problem that inconvenience occurred.

The invention was made in view of the above circumstances,
In the meter as described above, in particular, like the water meter WM shown in FIG. 6, the rotation index P of the meter having a display portion surrounded by a frame F protruding from the display surface I around the display surface I. An object of the present invention is to provide a rotation amount measuring instrument attachment for a rotation index, which can attach the rotation amount measuring device to this display portion regardless of the size of the display portion when measuring the rotation amount of P, P ′. I am trying.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the rotation indicator rotation amount measuring instrument mounting device according to the present invention has a tip portion formed in a semicircular shape in plan view in contact with the inner wall of the frame, and is located rearward of a predetermined position in the front-rear direction intermediate portion. A ring-shaped base whose lower part is larger than the height of the frame of the weighing meter is cut out, and a tip is arranged inside the ring-shaped base by being screwed into a screw hole penetrating the rear end of the base. And a locking member that is rotatably held at the tip of this threaded rod, the lower end of which is set to approximately the same level as the bottom surface of the base tip and the back surface of which is formed in a semicircular shape in plan view. And a measuring device mounting part that can be fixed to the base at a plurality of different positions in the front-rear direction and that can fix the rotation amount measuring device at a plurality of different positions in the vertical direction. .

[Action]

According to the above configuration, by rotating the screw rod of the gap adjusting unit and sliding the locking member of the gap adjusting unit, the gap between the tip of the base and the back surface of the locking member can be changed. As a result, the tips of the mounting portions and the back surface of the locking member can be pressed against the inner peripheral surface of the frame of the weighing meter to be fixed to the weighing meter. In addition, the position of the measuring instrument relative to the rotation index can be adjusted regardless of the size of the display part of the weighing meter by adjusting the fixed position of the measuring instrument mounting part with respect to the base and the fixed position of the measuring instrument with respect to the measuring device mounting part. Can be set to the optimum position.

〔Example〕

FIG. 1 is a partially cutaway perspective view showing a rotation amount measuring instrument attachment (hereinafter referred to as an attachment) of a rotation index. In FIG. 1, 1 is a base, 2 is an interval adjusting part, 3 is a measuring instrument mounting part, and these are all made of brass.

The base 1 has a ring shape that is flat in the vertical direction in plan view,
Therefore, the inner peripheral shape is a long hole, and the left and right straight portions 1a and 1b are parallel to each other. The tip portion 1c of the base 1 is formed in a semicircular shape having a diameter smaller than the inner diameter of the frame F in the meter to be attached as shown in FIG. In addition, a cutout portion 1d is formed in the lower portion of the base 1 by cutting back from an arbitrary position in the front-rear direction intermediate portion. The cutout dimension of the cutout portion 1d is set to be larger than the amount of protrusion from the display surface I of the frame F in the largest measurement meter to be attached. A plurality of taps 1e are cut at equal intervals on the upper surfaces of the linear portions 1a and 1b. Further, at the rear end portion of the base 1, a screw hole 1f is threadedly formed so as to vertically penetrate the rear end.

The space adjusting unit 2 is a screw rod screwed into the screw hole 1f of the base 1.
21 and a locking member 22 attached to the tip of the screw rod 21.
Consists of.

The screw rod 21 is provided with an operating knob 21a at its rear end, and by rotating the knob 21a to move the tip forward, the tip has a sufficient length to reach the inner peripheral wall of the tip 1 of the base 1. is doing.

The locking member 22 has a semi-cylindrical shape, and as shown in FIG. 2 and FIG.
The locking member 22 is rotatably held at the tip of 21.
Further, a locking pin 23 that penetrates the screw rod 21 at the tip
It is designed so as not to fall off the screw rod 21. Further, the lateral width 1 of the locking member 22 is equal to the linear portions 1a, 1 of the base 1.
It is set to be slightly smaller than the interval of b, and therefore the locking member 22 is formed by the inner walls of the straight portions 1a and 1b so that the threaded rod 2
It is prevented from rotating itself following the rotation of 1. Further, the bottom surface of this locking member 22 is set to be substantially at the same level as the bottom surface of the base 1 on the side of the notched tip.

The measuring instrument mounting portion 3 is configured such that the lower end of the rectangular brass plate in the longitudinal direction is L.
It has a mounting piece 3a that is bent in a letter shape.
It is screwed to one of the taps 1e of the base 1 through an elongated hole 3b formed in 3a. The measuring instrument mounting portion 3 is provided with a vertically extending elongated hole 3c for attaching a measuring instrument. This long hole 3c is a mounting screw s for the measuring instrument to be mounted later.
Has a width that allows penetration.

The measuring instrument attached to this fixture was a direct reflection type photoelectric switch equipped with a light projecting section and a light receiving section, and the light sent from the light projecting section was reflected by an object located at the focal point, that is, a rotation index. At this time, the light receiving section receives the reflected light. Further, the output signal of the photoelectric switch is sent to the signal processing section, and in this signal processing section, each time the light receiving section receives the reflected light, one pulse is generated and counted. However, the photoelectric switch may be a coaxial reflection type photoelectric switch, and in this case, a pulse signal may be generated when the light emitted from the light projecting unit is blocked by the rotation index.

Next, a description will be given of a case where the rotation amount measuring instrument attachment of the rotation index thus configured is attached to the water meter WM as shown in FIG. 6 described above with reference to FIGS. 2 and 3. To do.

First, the photoelectric switch PS as described above is attached to the measuring instrument mounting portion 3 by inserting a mounting screw s penetrating the photoelectric switch PS into the long light 3c of the measuring instrument mounting portion 3 and screwing it. The mounting position of this photoelectric switch PS is, as shown in FIG. 2, when this mounting tool is mounted on the water meter WM to be measured.
The rotation index P of the water meter WM is set so as to be positioned at the focal point of the light emitted from the light projecting unit R and returning to the light receiving unit A. Thus, even if the distance from the display surface I to the rotation index P varies depending on the diameter of the water meter WM, the photoelectric switch PS can be fixed at the optimum position by moving along the long hole 3c.

Next, the screw rod 21 is rotated to make the distance between the rear end of the locking member 22 and the front end 1c of the base 1 smaller than the inner diameter width of the frame F of the water meter WM. Then, with the bottom surface of the base 1 on the tip side and the bottom surface of the locking member 21 in contact with the display surface I of the water meter WM, the screw rod 21 is rotated in the opposite direction to form the rear end portion of the locking member 22. The tip 1c of the base 1 is widened to make contact with the inner peripheral surface of the frame F. At this time, as shown in FIG. 3, the photoelectric switch PS attached to the measuring instrument mounting portion 3 is the target rotation index P.
The abutting position of the rear end portion of the locking member 22 and the front end portion 1c of the base 1 with respect to the frame F and the mounting position of the measuring instrument mounting portion 3 with respect to the base 1 are set so as to be right above. This mounting position is suitable tap from the multiple taps 1e provided on the base 1.
This can be determined by selecting 1e and appropriately adjusting the positional relationship between the elongated hole 3b provided in the mounting piece 3a of the measuring instrument mounting portion 3 and the selected tap 1e. When the screw rod 21 is further rotated after the photoelectric switch PS is set to the predetermined position as described above, the rear end portion of the locking member 22 and the base 1
The tip portion 1c of the above is pressed against the inner peripheral surface of the frame F, and the fixture is fixed to the water meter WM.

As described above, according to the fixture as described above, it suffices to prepare one kind of fixture, and to adjust the focus of the photoelectric switch PS to the rotation index P regardless of the size of the display portion of the water meter. It can be held in a state matched with.

In addition, as shown in FIG. 4 and FIG. 5, for example, as shown in FIG. 4 and FIG.
3a 'was slidably fitted into a guide groove 1g' formed on the inner peripheral surface of the base 1 ', and screwed from the upper surface of the base 1'with the measuring instrument mounting portion 3'set at a desired position. The mounting piece 3a 'may be caulked with the screw 3d, and in short, the measuring instrument mounting portion 3'can be fixed at a desired position. Further, the design of the mounting structure of the measuring device in the measuring device mounting portion can be appropriately changed according to the mounting structure of the measuring device to be mounted.

Further, the rotation index to be measured is not limited to the above-mentioned guideline, and is an octagonal pyramid that is used when a very small amount of water is flowing, which is used in a water meter WM as shown in FIG. 6, for example. It may be a rotation index having a different shape such as a pilot P '.

Furthermore, the type of metering meter for fixing the fixture according to the invention is not limited to the water meter as in the embodiment, and may be a metering meter in which the periphery of the display surface is surrounded by a frame protruding from this display surface.

[Effect of device]

According to the first aspect of the present invention, since it is possible to attach the rotation amount measurement device attachment of the rotation index to the measurement meter regardless of the size of the display portion of the measurement meter, the type of rotation amount measurement device attachment of the rotation index is attached. And the production cost can be reduced. Moreover, since it is only necessary to prepare a rotation amount measuring device attachment for one kind of rotation index, there is an effect that the complexity during the work can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of a rotation amount measuring instrument attachment of a rotation index is cut away, and FIG. 2 is a cross-sectional explanatory view for explaining a use state,
FIG. 3 is a plan view of the same, FIG. 4 is a perspective explanatory view of an essential part showing another embodiment, FIG. 5 is an enlarged sectional view of the essential part of FIG. 4, and FIG. 6 is a perspective view of a water meter. is there. 1 ... base, 1c ... tip 1e ... screw hole, 2 ... spacing adjustment part 21 ... screw rod, 22 ... locking member 3 ... measuring instrument mounting part

Claims (1)

[Scope of utility model registration request] 1. A mounting tool for mounting a rotation amount measuring device for measuring a rotation amount of a rotation index of a measuring meter, which is attached to a measuring meter surrounded by a frame projecting from the display surface around a display surface. A front end portion is formed in a semicircular shape in plan view in contact with the inner wall of the frame, and a lower portion behind a predetermined position in the front-rear direction intermediate portion is cut out to be larger than the height of the frame of the weighing meter. A base, a threaded rod whose tip is arranged inside a ring-shaped base screwed into a screw hole penetrating the rear end of the base, and rotatably held by the tip of this threaded rod, The lower end is set at substantially the same level as the bottom surface of the base end portion, and the back surface is formed with a locking member formed in a semicircular shape in plan view, and a plurality of different positions on the base in the front-back direction. Can be fixed and measures the amount of rotation Rotation amount measuring device fitting the rotating indicator, characterized in that it comprises a a can be fixed at a plurality of positions different in the vertical direction measuring unit mounting portion.