JP2002317473A - Meter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meter unit easy to be operated, especially easy to be operated underground, and capable of securing the installation of a meter. SOLUTION: A check valve 5 and an attaching/detaching device 11 are integrally fitted to a base 3, and a slider holder 36 of the attaching/detaching device is moved to detachably fit the meter 7. The attaching/detaching device is vertically provided. An operating shaft 61 provided with a warm 65 and a warm wheel 51 to be engaged with the warm 65 are provided. The warm wheel is provided with internal teeth 53, and the slider holder 36 stopped by a guide plate 45 not to be rotated is engaged with the internal teeth, and the slider holder 36 moves forward and backward with the rotation of the operating shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a meter unit used for water supply. More specifically, the present invention relates to a meter unit that can be easily attached and detached even if it is installed deep underground.

[0002]

2. Description of the Related Art In cold regions, water pipes are buried below the freezing depth in order to avoid freezing in winter, and accordingly, meters are also installed in pits provided at deep positions.
The meter will be installed and provided by the water utility after the piping is completed. Exchanges take place every few years. Therefore, it is not easy to mount and remove the meter in such a deep and narrow pit.

[0003] The applicant has provided a meter unit disclosed in Japanese Patent Application Laid-Open No. H11-93226, for example, as a device that facilitates attachment and detachment of a meter in a narrow place. However, since this unit is mainly intended for use with narrow pipe shafts provided in apartment buildings, the detachable device for attaching and detaching the meter is operated by turning the handle provided on the detachable device. I have. Therefore, it is not suitable for installation in deep underground.

As one of other types of meter units, there is Japanese Utility Model Publication No. 6-199907. This uses a spring to press the slide tube against the meter to fix the meter.When attaching and detaching the slide tube, use an attachment / detachment tool with an auxiliary link, and hook the auxiliary link to the hook of the frame. Then, the notch of the main body link is engaged with the engaging projection of the slide tube, and in this state, the attachment / detachment tool is swung to retract the slide tube against the spring. Then, in order to maintain the retracted state, the engaging protrusion of the slide tube is inserted into the notch guide groove of the protrusion, and when the protrusion reaches the notch, the attachment / detachment tool is swung to form the protrusion. However, the operation is troublesome, for example, it is necessary to prevent the notch from coming off the notch. In addition, the mounting of the meter is by removing the attachment / detachment tool and extending the spring to the original state, and does not directly move the slide tube by hand, so the spring moves the slide tube normally and the meter is securely It is difficult to confirm whether or not it has been fixed.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and allows the user to easily attach and detach a meter even when the meter is installed deep underground. It is an object of the present invention to provide a meter unit that can easily confirm whether or not the measurement has been successfully performed.

[0006]

In order to solve the above problems, in a meter unit according to the present invention, the unit is fixed to a base, and the meter is pressed against a water supply device also fixed to the base. A detachable device that can be attached and detached extends in a direction substantially perpendicular to the installation surface on which the meter unit is installed, and is rotatable and rotatable around an axis that extends in parallel with the installation surface. In this configuration, a rotating body that cannot move in the axial direction and a slider that is in contact with the end of the meter and that can slide toward the water supply equipment and cannot rotate are used.The rotating body is rotated by the axial rotating body, and the slider is It was configured to be slid by a rotating body.

[0007] In one embodiment, the shaft-like rotating body has a worm at a predetermined position in the axial direction, and the rotating body is constituted by a worm wheel that meshes with the worm.

In still another embodiment, the worm wheel includes an internal gear, and the slider includes an external gear that meshes with the internal gear, and is prevented from rotating.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings, but the scope of the present invention is not limited to the embodiments described below.

FIG. 1 is a front view of a meter unit 1 according to a specific embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is a sectional view taken along line AA of FIG. In the figure, reference numeral 3 denotes a base of the unit, which is mounted on the installation surface G by the leg 3a when the unit 1 is installed.

Reference numeral 5 denotes a check valve, which is a flange (not shown) in which flat flanges 5a and 5b (see FIG. 2) formed to spread right and left are formed in the base 3 in a similar shape.
And is fixed to the base 3 using bolts and nuts.

Reference numeral 11 denotes an attaching / detaching device to be described later, which detachably attaches the meter 7 to the unit. This also has flanges 12a and 12b formed to extend left and right on a gear box 12 to be described later (see FIG. 2). Are fixed on the base 3 on a flange (not shown) formed in the same shape. Reference numeral 9 denotes a water stopcock attached to the attachment / detachment device.

The attached meter 7 has adapters 8a and 8b attached to its upstream connection portion and downstream connection portion, respectively. As shown in FIG. 1, the meter 7 has an upstream adapter 8a abutting on and supported by a slider of an attachment / detachment device 11 to be described later, a downstream adapter 8b abutting on an end of the check valve 5 and supported by the slider. Is moved to the right and pressed, whereby it is held and fixed between the attachment / detachment device 11 and the check valve 5.

The attachment / detachment device, which is a main part of the present invention, will be described below in detail with reference to FIGS. FIG. 4 is a longitudinal sectional view of the attaching / detaching device 11, and FIG. 5 is a sectional view taken along line BB of FIG.

In FIG. 1, reference numeral 12 denotes a housing or a gear box of the attaching / detaching device 11. The gear box 12
It is hollow and is open at both the upstream end and the downstream end.
The shape is roughly composed of a small diameter portion 13 on the upstream side and a large diameter portion 14 on the downstream side. An inner flange 15 extending inward is formed at the end of the small diameter portion 13. A female screw 16 is formed on the inner periphery of the downstream end. On the inner peripheral side, a portion where the small diameter portion 13 continues to the large diameter portion is an enlarged diameter portion 17 whose diameter is increased by a predetermined length in the axial direction. Reference numeral 21 denotes a cylindrical gear box holder having a through hole 24 at the center, and is attached to the upstream end of the gear box 12. The presser 21 has a flange 22 extending radially outward on the right side or near the inner end in FIG. 4, and a male screw 23 is formed on the left side of the flange 22 at a small interval. Then, the male screw 23 is screwed into the female screw 9b formed at the end of the cylindrical portion of the ball retainer 9a of the water stopcock 9 described above,
As shown, the inner flange 13 of the gear box 12 is mounted between the flange 16 and the end of the cylindrical portion of the ball holder 9a.

At the downstream end of the gear box 12, a cylindrical gear box cover 26 having a through hole 31 also at the center is provided with a male screw 32 formed on the outer periphery of the cylindrical portion 27.
Is screwed into the female screw 16 of the box and attached as shown. An inner flange 28 is formed at the upstream end of the cover 26, and an outer flange 29 is formed at the downstream end. Further, an annular projection 30 whose inner diameter is substantially the same as the inner diameter of the enlarged diameter portion 17 of the box 12 is formed concentrically with the through hole 31 on the outer surface of the inner flange 28.

Reference numeral 36 denotes a slide holder, which is an adapter 8a attached to the upstream end 7a of the meter.
And slide it. That is, the holder 36 is also a substantially cylindrical member having a central through hole 37. Then, the cylindrical portion 38 on the upstream side fits into the through hole 24 of the box holder 21 described above, and is slidable. Reference numeral 39 denotes an O-ring.

A male screw is formed on the outer periphery of the holder 36 in the axial middle part. A slightly wider outer flange or guide 41 is formed at the downstream end, and fits into the hole 31 of the box cover 26 described above. An adapter receiving portion 42 is provided from the outer peripheral edge of the lower portion of the flange 41 and extends in a circular shape along the outer periphery of the flange 41 with a predetermined length in the axial direction. That is, the adapter 8a is received when the meter 7 is mounted. The adapter 8a is provided with an O-ring 8c on its end face to seal between the end face of the flange 41 of the holder 36 and the abutment. At the center of the lower end of the adapter receiving portion 42, a slit 42a is formed over the entire length from the receiving portion 42 to the flange 41.
The guide plate 45 provided upright on the base 3 fits into the
As a result, the holder 36 can be moved in the axial direction but cannot be rotated.

Reference numeral 51 denotes a worm wheel as a rotating body, which has short bosses 54 and 55 on both sides of the external teeth 52. The wheel 51 has, in addition to the external teeth 52, internal teeth 53 at a portion of a boss 55 on the right side from a position slightly left from the center in the axial direction, and the internal teeth 53 mesh with the male screw 40 of the slide holder 36 described above. ing. This wheel 51
As can be understood from the drawing, the axial movement of the box cover 2 and the bottom portion 17a of the enlarged portion 17 of the gear box 12
0 is limited by the end face of the inner flange 28.

Referring to FIG. 5, reference numeral 61 denotes an operation shaft, which extends from the inside of the gearbox 12 to the outside in a direction substantially perpendicular to the installation surface when the unit 11 is installed. The operating shaft 61 is substantially composed of three parts, a connecting part 62 having four cut surfaces from the top, and a shaft part 63 having a seal part 64 to which an O-ring for sealing is mounted below.
And a worm 65 formed thereunder. The lower end 66 is formed in a cap 71 attached to the gear box 12 by screw connection, and is received in a hole 72 having a bottom. The shaft portion 63 extends outside through the through hole 12a of the gear box 12. Gearbox 1
A connection piece 75 having a rectangular upper portion is attached to the connection part 62 located outside the second part 2 so as to rotate integrally with a bolt 76 screwed into a female screw formed in the connection part 62. .

Meter unit 1 constructed as described above
As shown in FIG. 3, the upper part 7 of the connecting piece 75 is provided at the lower end.
6 can be operated using a handle 81 provided with a handle fitting portion 82 corresponding to the shape of FIG. That is, by rotating the operation shaft 61 with the handle 81, the slide holder 36 can be moved forward and backward.

[0022]

As is clear from the above description, the meter unit according to the present invention can mount and remove the meter by rotating the operating shaft extending substantially perpendicularly to the installation surface around its axis. Very easy to operate. This configuration is particularly advantageous when the unit is installed deep underground.

Also, unlike the case of mounting the meter using the biasing force of a spring, the slide holder is moved forward and backward using a mechanism that is mechanically linked, and the meter is mounted.
The mounting state can be surely performed by the operator while confirming the feeling by hand.

When a worm or worm wheel is used, since the worm wheel has straight teeth, the worm wheel is not rotated to reverse from the state in which the meter is mounted, and must be securely maintained in that state. Can be. Therefore, it is not necessary to separately provide a member for preventing reverse rotation.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a meter unit according to an embodiment of the present invention.

FIG. 2 is a plan view.

FIG. 3 is a cross-sectional view taken along line AA of FIG.

FIG. 4 is a longitudinal sectional view of the attaching / detaching device.

FIG. 5 is a sectional view taken along line BB in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Meter unit 3 Base 5 Check valve 7 Meter 9 Water stopcock 11 Detachable device 12 Gear box 36 Slide holder 51 Worm wheel 52 External tooth 53 Internal tooth 61 Operating shaft 65 Worm

Claims (3)

[Claims] 1. A water supply equipment fixed to the base, one end of the meter to be fixed to the base, and connected to one end of the meter, and connected to the other end of the meter to be fixed to the base,
A meter unit having an attaching and detaching device for detachably attaching the meter by pressing the meter against the water supply equipment, wherein the attaching and detaching device extends in a direction substantially perpendicular to an installation surface on which the meter unit is installed, A rotatable, axially immovable axial rotating body, a rotatable body that is rotatable about an axis extending parallel to the installation surface, and is provided to be axially immovable, and abuts the other end side of the meter. A slider which is slidable and non-rotatable toward the water supply equipment, wherein the rotating body is rotated by the shaft-shaped rotating body, and the slider is slid by the rotating body. . 2. The meter unit according to claim 1, wherein the shaft-like rotating body has a worm at a predetermined position in the axial direction, and the rotating body is a worm wheel that meshes with the worm. . 3. The meter unit according to claim 2, wherein the worm wheel includes an internal gear, the slider includes an external gear that meshes with the internal gear, and is prevented from rotating. , Meter unit.