JPH05209425A - Water meter removable jig - Google Patents

Abstract

PURPOSE:To make it possible to disconnect a water meter unit with ease by connecting a fixed engaged portion and a movable engaged portion to a main connection pipe and an auxiliary connection pipe, manipulating a final control element and moving forward and backward a movable engaged portion by way of a transmission section. CONSTITUTION:An auxiliary connection pipe 3 is connected to a main connection pipe 2 having a water meter unit S in such a fashion that it may be expanded and contracted freely where the auxiliary connection pipe 3 is energized by means of a spring so that it may move in the elongation direction, thereby constituting a flow meter unit 5. Then, a disconnection jig 1 is installed, which comprises a clamping section having a fixed engaged portion 6 and a movable engaged portion 7, a shaft section 9, a final control element 10 and a transmission section 11. The fixed engaged portion 6 and the movable engaged portion 7 of the jig 1 are engaged with the main connection pipe 2 and the auxiliary pipe 3. Then, the final control element 10 of the jig 5 is manipulated so that its manipulated variable may be transmitted to the movable engaged portion by way of the transmission section 11. This construction makes it possible to disconnect the flow meter unit 5 by moving forward or backward the movable engaged portion 7 to and from the fixed engaged portion 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water meter attachment / detachment jig for attaching / detaching a water meter connected to a water pipe in a cold region.

[0002]

BACKGROUND ART AND PROBLEMS THEREOF Generally, it is necessary to replace a water meter connected to a midway part of a water pipe after the expiration date of a specified certification. However, in the case of a cold region, since it is usually installed at a depth of about 1 m underground, there is a problem that it cannot be easily replaced.

Therefore, for example, Japanese Utility Model Laid-Open No. 61-26761
A telescopic meter box disclosed in Japanese Patent Publication is also proposed. This meter box connects the meter (water meter) and the water stopcock on the movable side, and the tap water inlet and tap water outlet on the fixed side with a coiled pipe that expands and contracts. By extending the meter upwards, the meter and the water stopcock can be raised so that the meter can be replaced on the ground. However, this type of meter box has a problem that the product cost of the water meter itself is significantly increased because the meter box is relatively long and requires special coiled piping, and the entire equipment is large and large.

Therefore, the applicant of the present invention, at the same time as the present application, is provided with a base having a pair of opposed receiving portions connected to the water pipe side, and a water meter unit, that is, a volume, which is attached to and detached from the base. A main connection pipe having a water container and having an outer end provided with a pressure contact surface in contact with one of the receiving portions and an inner end provided with a cylinder portion, and an outer end having a pressure contact surface in contact with the other of the receiving portions. Provided on the outer peripheral portion of the inner end is an auxiliary connecting pipe provided with a piston portion to be inserted into the cylinder portion, a spring for urging the main connecting pipe and the auxiliary connecting pipe in an extension direction, and a water flow direction with respect to water pressure in the piston portion. A water meter attachment / detachment device comprising a water meter unit in which the pressure receiving area at a right angle is set larger than the pressure receiving areas for water pressure at the outer end of the main connecting pipe and the inner end of the auxiliary connecting pipe is proposed. Settled.

An object of the present invention is to provide a water meter attachment / detachment jig for easily attaching / detaching a water meter unit in such a water meter attaching / detaching device.

[0006]

A jig 1 for attaching and detaching a water meter according to the present invention connects an auxiliary connecting tube 3 to a main connecting tube 2 having a water meter S so that the auxiliary connecting tube 3 can expand and contract. The fixed engagement portion 6 and the movable engagement portion 7 that hold and hold the main water pipe unit 2 side and the auxiliary water pipe unit 3 side with respect to the water meter unit 5 that is urged in the extension direction by the spring 4. And a shaft portion 9 having a lower end coupled to the grip portion 8, and a shaft portion 9
An operating section 10 provided at an upper end of the operating section 10 and a transmitting section 11 that connects the operating section 10 and the movable engaging section 7 and can transmit an operation amount of the operating section 10 to the movable engaging section 7. To do. It is desirable that the movable engaging portion 7 is provided so as to be movable forward and backward with respect to the fixed engaging portion 6 and is biased in the backward direction by the springs 12a and 12b. In addition, the operation unit 10 can utilize a rotatable L-shaped clamp member 13. Further, the transmission portion 11 includes a wire 14 and guide members 15a, 15b, 16 for guiding the wire 14.
It can be configured by including a and 16b.

[0007]

According to the water jig attaching / detaching jig 1 according to the present invention, the operation amount of the operating portion 10 is transmitted to the movable engaging portion 7 through the transmitting portion 11, and the movable engaging portion 7 is fixedly engaged. It can be moved forwards or backwards (due to the spring 12) with respect to the part 6.

Therefore, the movable engaging portion 7 is moved forward,
When the fixed engaging portion 6 and the movable engaging portion 7 are brought close to each other, they are locked to the main connecting pipe 2 side and the auxiliary connecting pipe 3 side, respectively, and the grasping portion 8 can grasp the water meter unit 5, and at the same time, the auxiliary The connecting pipe 3 enters the main connecting pipe 2, and the water meter unit 5 is shortened. On the other hand, the movable engaging portion 7 is moved backward,
When the fixed engaging portion 6 and the movable engaging portion 7 are separated from the main connecting pipe 2 and the auxiliary connecting pipe 3, the water meter unit 5 extends and
As a result, the grip of the water meter unit 5 by the grip portion 8 can be released.

Therefore, for example, even when the water meter unit 5 is attached to or detached from the base provided at the bottom of a relatively deep meter box buried in the ground, the water gripper unit 5 is gripped by the grip portion 8. However, by operating the operation portion 10 provided on the upper end of the shaft portion 9, the shaft portion 9 can be easily attached and detached on the ground.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, an attachment / detachment device including a water meter unit 5 which is attached / detached using the water meter attachment / detachment jig 1 will be described with reference to FIG.

In the attachment / detachment device indicated by reference numeral M in the drawing, 51
Is a base, and is composed of a horizontal plate portion 52 and a pair of vertical plate portions 53 and 54 that are integrally formed so as to face each other on both sides of the horizontal plate portion 52. Vertical plate parts 53, 5
4, joints 55 and 56 are attached, and inner ends of the joints 55 and 56 serve as receiving portions 57 and 58.

A water meter unit 5 includes a main connecting pipe 2, an auxiliary connecting pipe 3, and a spring 4. A water meter S having a substantially cylindrical shape is attached to a middle portion of the main connecting pipe 2. A union 61 is screwed onto one end of the main connecting pipe 2,
A pressure contact surface 6 capable of pressure contact with the end surface of the receiving portion 57
2 is formed, a taper surface is provided on the outer periphery of the press contact surface 62, and the projection portion 6 is inserted into the pipe of the joint 55.
3 is formed. In addition, 64 and 65 show O-rings. On the other hand, the cylinder portion 66 is screwed to the other end of the main connecting pipe 2.

On the other hand, one end of the auxiliary connecting pipe 3 has a union 61.
It is formed in the same way as the tip of. That is, 67 is a pressure contact surface that can be pressed against the end surface of the receiving portion 58, 68 is a protrusion, and 69 is an O-ring. A brim-shaped engaged portion 70 having a pressure contact surface 67 extending radially outward is integrally formed at one end of the auxiliary connecting pipe 3. On the other hand, the piston portion 7 is provided on the outer circumference of the other end of the auxiliary connecting pipe 3.
1 is integrally formed. The piston portion 71 is inserted into the cylinder portion 66, and the compressed coil-shaped spring 4 is interposed between the cylinder portion 66 and the engaged portion 70 to project the auxiliary connecting pipe 3 from the cylinder portion 66. Urge to. As a result, the main connecting pipe 2 and the auxiliary connecting pipe 3 are communicatively connected to each other via the cylinder portion 66 in a stretchable manner.

The piston portion 71 (cylinder portion 66)
When forming the outer end of the main connecting pipe 2 and the outer end of the auxiliary connecting pipe 3, the pressure receiving area perpendicular to the water flow direction in the piston portion 71 is defined as the water receiving direction in the water flow direction at the outer end of each connecting pipe 2, 3. Make sure that it is larger than the right-sided pressure receiving area. Accordingly, the pressing force acting on the receiving portions 57, 58 from the pressure contact surfaces 62, 67 side is reduced by the receiving portions 57, 5
The pressing force acting on the pressure contact surfaces 62, 67 from the 8 side is greater, and sufficient adhesion is secured on the pressure contact surfaces 62, 67.

Next, the structure of the water jig attachment / detachment jig 1 according to the present invention will be described with reference to FIGS.

The attachment / detachment jig 1 is roughly divided into a grip portion 8, a shaft portion 9, an operation portion 10 and a transmission portion 11.

The grip portion 8 is provided with a frame 21 including a right frame portion 21a and a left frame portion 21b, which are long in the front-rear direction and are separated from each other in the left-right direction, and an intermediate frame portion 21c connecting the upper ends of the intermediate portions of the frame portions 21a and 21b. Also,
A fixed engagement portion 6 is provided between the rear portions of the frame portions 21a and 21b.
Erection. A concave portion 6a is formed in the middle portion of the fixed engagement portion 6 so as to prevent displacement during engagement. On the other hand, guide slits 22a and 22b that are long in the front-rear direction are formed in the front portions of the frame portions 21a and 21b, respectively, and the left and right ends of the movable engaging portion 7 are movably loaded. The movable engaging portion 7
The intermediate portion of is aligned with the engaged portion 70 and is formed in an inverted U shape. Further, brackets 23a and 23b are provided behind the guide slits 22a and 22b. Bracket 23
The drive rods 24a, 24
b is inserted, the front end thereof is connected to the left and right of the movable engaging portion 7, and the stopper nuts 25a, 25 are provided at the rear end thereof.
b, a wire hook 26 for connecting a wire described later
Screw a and 26b. Further, springs 12a and 12b are contracted between the movable engaging portion 7 and the brackets 23a and 23b to urge the movable engaging portion 7 away from the fixed engaging portion 6 in the backward direction.

On the other hand, the lower end of the shaft portion 9 is connected or integrally provided at substantially the center of the intermediate frame portion 21c. The shaft portion 9 is formed of an internally hollow pipe member, and an adjustment window 28 is opened in the middle portion.

At the upper end of the shaft portion 9, an operating portion 10 is provided.
To provide. The operating portion 10 has a bearing portion 31 fixed to the upper end of the shaft portion 9, a shaft portion 32 which is inserted into the bearing portion 31 and is movable in the axial direction of the shaft portion 9, and one end of which is rotatable at the upper end of the shaft portion 32. And an L-shaped clamp member 13 connected to each other, and a pair of left and right link portions 33a ... Connecting the intermediate portion of the clamp member 13 and the bearing portion 31 via a rotating shaft. Therefore, by operating the other end side (lever portion) of the clamp member 13 and rotating the clamp member 13 through about 180 °, the shaft portion 32 can be moved up and down, and is stable at each rotation end.

Furthermore, a transmission section 11 for transmitting the operation amount of the operation section 10 to the movable engagement section 7 is provided. That is, the shaft 32
And the wire hooks 26a and 26b are connected via a transmission mechanism 34. An upper end of a transmission rod 35 is coupled to the shaft portion 32, one end of a turnbuckle 36 is connected to the lower end thereof, and a transmission hook 37 is provided at the other end of the turnbuckle 36. The turnbuckle 36 can be adjusted from the outside by positioning it on the adjusting window 28. The left and right frame portions 21a and 21b are provided with guide rollers 15a and 15b and guide hooks 16a and 16b.
To provide. Then, one end of the wire 14 is connected to one wire hook 26a, and the other end of the wire 14 is connected to the other wire hook 26b via the guide roller 15a → guide hook 16a → transmission hook 37 → guide hook 16b → guide roller 15b. Connecting.

Next, a usage method including the function of the water jig attachment / detachment jig 1 will be described.

First, the installation location of the water meter will be described. Generally, in a cold region, a meter box 91 as shown in FIG. 6 is used to prevent freezing. The meter box 91 is buried in the ground at a depth of about 1 m, and usually an intermediate lid 92.
And the upper lid 93 has a double lid structure.

The base 51 is fixed to the bottom of the meter box 91. One joint 55 of the base 51
A water stopcock 95 is connected to the outer end of the, and an inflow water pipe Pa is further connected to the water stopcock 95. Also, the other joint 56
A check valve 96 is connected to the outer end of the check valve 96, and a water pipe Pb on the outflow side is connected to the check valve 96. Therefore, if the water stopcock 95 is closed, the water in the water pipe Pa on the inflow side is stopped by the water stopcock 95, and the water in the water pipe Pb on the outflow side does not return to the base 51 by the check valve 96. Even if the water meter unit 5 does not exist, it will be in a water-stop state.

Next, a case where the water meter unit 5 is attached to the base 51 in this state will be described.

First, the attachment / detachment jig 1 operates the operating portion 10,
The movable engaging portion 7 is set to the retracted position. Then, as shown in FIG. 4, the water meter unit 5 is arranged between the frame portions 21a and 21b of the grip portion 8 and the operation portion 10 is operated to move the movable engagement portion 7 to the forward position. In this case, the shaft portion 32 moves upward, the transmission rod 35 and the turnbuckle 36 are pulled up, and the wire 14 and the drive rod 24 are moved.
a and 24b are pulled against the springs 12a and 12b. As a result, the fixed engaging portion 6 is engaged with the side surface of the cylindrical water meter S, the movable engaging portion 7 is engaged with the engaged portion 70, and the grasping portion 8 grasps the water meter unit 5. At the same time, the auxiliary connecting pipe 3 is pushed into the cylinder portion 66, and the water meter unit 5 is shortened.

Then, as shown in FIG. 6, holding the upper end of the attachment / detachment jig 1 into the grip box 8 into the meter box 91, the water meter unit 5 is attached to the vertical plate portion 5 of the base 51.
It is arranged between 3 and 54, and further, the operation portion 10 of the attachment / detachment jig 1
Is operated to set the movable engaging portion 7 to the retracted position, the water meter unit 5 is extended and the protruding portions 63 and 68 are connected to the joint 5
5 and 56 are respectively inserted into the conduits, and the elasticity of the spring 4 causes the press contact surfaces 62 and 67 to move into the receiving portions 57,
Crimp to 58. Further, the grip portion 8 can be detached from the water meter unit 5. In this way, the mounting work can be performed on the ground with one touch.

On the other hand, when the water meter unit 5 is removed from the base 51 for replacement, first, the water stopcock 95 is closed. Next, the grip portion 8 of the attachment / detachment jig 1 in which the movable engaging portion 7 is set to the retracted position is put in the meter box 71, and the movable engaging portion 7 and the fixed engaging portion 6 are connected to the water meter S and the engaged portion. It is arranged so as to be located on both sides of 70. Then, operate the operation unit 10,
When the movable engaging portion 7 is set to the forward position, the water meter unit 5 can be gripped by the grip portion 8 as described above, the water meter unit 5 can be shortened, and the water meter unit 5 can be detached from the base 51.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment.
For example, the grip portion, the shaft portion, the operation portion, and the transmission portion can be replaced with other structures that exhibit the functions of the respective portions. In addition, the configuration and shape of the details can be arbitrarily changed without departing from the scope of the present invention.

[0030]

As described above, the water jig attachment / detachment jig according to the present invention has a grip portion capable of gripping the water meter unit, a shaft portion having a lower end coupled to the grip portion, and an operation provided at the upper end of the shaft portion. Since it has a transmission part that connects the control part, the operation part and the grip part, even if it is a water meter unit attached to the deep bottom position of the meter box buried in the ground, it can be attached and detached with one touch on the ground. Therefore, it is extremely easy to replace the water meter.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view of a water jig attachment / detachment jig according to the present invention;

FIG. 2 is a plan view clearly showing a grip portion in the attachment / detachment jig,

FIG. 3 is a front view of the same.

FIG. 4 is a partial vertical cross-sectional side view of the water meter unit held by the attachment / detachment jig.

FIG. 5 is a partially longitudinal side view of the water meter unit attached to the base,

FIG. 6 is an operation explanatory view showing a method of using the attachment / detachment jig,

[Explanation of symbols]

 1 Water meter attachment / detachment jig 2 Main connection pipe 3 Auxiliary connection pipe 4 Spring 5 Water meter unit 6 Fixed engagement part 7 Movable engagement part 8 Grip part 9 Shaft part 10 Operating part 11 Transmission part 12a Spring 12b Spring 13 Clamp member 14 Wire 15a Guide roller (guide member) 15b Guide roller (guide member) 16a Guide hook (guide member) 16b Guide hook (guide member)

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hirofumi Emura 127 Kojima, Nagano City, Nagano Prefecture Takemura Manufacturing Co., Ltd.

Claims (4)

[Claims] 1. A main connecting pipe for a water measuring device unit in which an auxiliary connecting pipe is flexibly connected to a main connecting pipe having a water measuring device, and the auxiliary connecting pipe is biased in a direction of extension by a spring. Side and the auxiliary connecting pipe side, a gripping part having a fixed engaging part and a movable engaging part for gripping by gripping, a shaft part having a lower end coupled to the gripping part, and an operating part provided at the upper end of the shaft part, An attachment / detachment jig for a water meter, comprising: a transmission unit that connects the operation unit and the movable engagement unit and that can transmit the operation amount of the operation unit to the movable engagement unit. 2. The detachable treatment of a water meter according to claim 1, wherein the movable engaging portion is provided so as to move forward and backward with respect to the fixed engaging portion, and is biased in the backward direction by a spring. Ingredient 3. The attachment / detachment jig of a water meter according to claim 1, wherein the operating portion uses a rotatable L-shaped clamp member. 4. The attachment / detachment jig of a water meter according to claim 1, wherein the transmission part includes a wire and a guide member for guiding the wire.