JPS6116457Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an opening/closing device for an anti-freeze faucet, and is designed to prevent the operating shaft connected to the valve stem of the anti-freeze faucet from being accidentally pulled out, and to prevent the operation shaft from being accidentally pulled out when repairing the anti-freeze faucet. The purpose is to facilitate the operation of moving the operating shaft in and out of the guide tube.

The illustrated embodiment will be described below.

Reference numeral 1 denotes a guide pipe, the lower end of which is fixed to the main body 20 of a known anti-freeze faucet 19 buried underground at a depth of 1 to 2 m, and the upper part protrudes above the ground, and a receiving tube 2 is attached to the upper end. is installed.

The stopper main body 20 has a bottomed cylindrical shape with a circular cross section, and has a passage 21 connected to the water main at the bottom, which is connected to an inner chamber 22, and a fire extinguishing sprinkler installed on the lower side of the inner chamber 22. A water discharge port 24 is provided to connect the base end of the water pipe 23, and a drain port 25 is provided slightly above this.

A valve stem 26 has circular valves 27 and 28 fitted at its lower end and center, and is inserted into the plug body 20 from the upper end opening, and the valves 27 and 28 are fitted into the inner chamber 22 so as to be able to slide up and down in a watertight manner. I'm making it match.

Further, when the valve stem 26 is in the lowermost closed position (solid line in Figure 4), the valve 27 is connected to the passage 21 and the water outlet 2.
4, and when the valve 27 rises to the open position (dashed line in the figure), the valve 27 closes the water outlet 24 and the drain outlet 25.
The passage 21 and the water outlet 24 communicate with each other so that water is distributed to the sprinkler.

The receiving tube 2 has a circular inner circumference, a hexagonal outer circumference, and has an upper inner circumference 2a having a larger diameter than a lower inner circumference 2b, and screw holes 3 penetrating the inner and outer circumferences at opposing positions in the upper part. 3, a circular flange 4 is formed at the upper end, and the lower inner peripheral portion 2b is screwed onto the upper end of the guide tube 1.

Reference numeral 5 denotes an operating shaft inserted into the guide pipe 1 so as to be able to move up and down, the lower end of which is connected to the upper end of the valve stem 26 of the antifreeze faucet 19 through a joint 29, and the connecting shaft 6 is screwed onto the upper end. .

The shaft 6 has an upper end 6a with a circular cross-section, a lower part with a hexagonal cross-section, and an upper end 6a with a hexagonal cross-section.
is located at the upper inner peripheral portion 2a of the receiving tube 2.

Reference numeral 7 denotes a drive shaft, which is connected to a drive mechanism 31 consisting of a known combination of a screw nut and screw shaft operated by a motor 30 built into a case 8 or a handle 9.
Bearing 10 with its lower part attached to the bottom of case 8
It is inserted into the body and moved up and down by the motor 30 or the handle 9.

The drive mechanism 31 has a screw nut 33 in the upper side of the bearing cylinder 32 established on the bearing 10.
A screw shaft 34 is supported rotatably but not vertically movable, and the lower end of a screw shaft 34 screwed thereon is connected to the upper end of the drive shaft 7 by a joint 35.
5 is vertically slidably and non-rotatably fitted into the support cylinder 32, and a support shaft 37 is rotatably established in a support frame 36 horizontally suspended at the upper end of the support cylinder 32.
The gears 39 and 40 fitted to the shaft 38 are engaged with each other, and the upper end of the support shaft 37 is connected to the handle 9, and the lower end is connected to the screw nut 33. Said motor 3
When the motor 30 or the handle 9 is rotated forward or backward, the screw nut 33 rotates in a predetermined direction and the drive shaft 7 moves up and down.

Reference numeral 11 denotes an insertion tube with a circular cross section that is screwed onto the outer part of the bearing 10, and has a flange 12 having the same shape as the flange 4 of the receiver tube 2 on the outer periphery of the central portion.
Screw holes 13, 13 corresponding to the screw holes 3, 3 of the receiving cylinder 2 are provided at opposing positions in the lower part of the flange 12, and a pair of vertically rectangular notch recesses are provided between these screw holes 13, 13. 14 (only one of which is shown), and the lower end of the drive shaft 7 is located within this insertion tube 11.

The operating shaft 5 and the drive shaft 7 are arranged such that the lower end of the drive shaft 7 and the upper end of the coupling shaft 6 abut each other, and the sleeve 15 is fitted to the abutting portion, so that the lower end of the drive shaft 7 and the sleeve 15 are positioned opposite each other. Insert set screw 1 into the screw hole formed in
6 are screwed together, and a set screw 17 is screwed into a screw hole formed at a position facing the upper end of the shaft 6 and the sleeve 15, and the set screw 17 faces the notched recess 14. There is.

The insertion tube 11 has a lower part than the flange 12 fitted into the receiving tube 2, and the flange 12 and the flange 4
are butted against each other, the screw holes 13, 13 are aligned with the screw holes 3, 3, and setscrews 18, 18 are screwed into them to fix them to the receiving cylinder 2.

Therefore, by vertical movement of the drive shaft 7 by the handle 9 or the motor 30, the valve stem 26 is displaced to the open position or the closed position via the operating shaft 5, and the antifreeze faucet 19 is opened and closed. , If another object hits the driving part of the case 8, etc., or if you try to lift it by mistake, the setscrews 18, 18
Since the guide pipe 1 to which the insertion tube 11 and receiver tube 2 are connected is fixed to the anti-freeze water tap 19 buried underground, the case etc. will not be lifted up. will not be accidentally pulled out and opened.

In addition, when repairing the gaskets of the valves 27 and 28 of the antifreeze faucet 19, for example, the setscrews 18 and 18
By loosening and releasing the connection, the operation shaft 5 is separated from the driving parts such as the drive shaft 7 and the case 8, and the valves 27 and 28 are pulled out from the plug body 20 along with the valve stem 26, and removed or inserted. You can do it.

In addition, in the above embodiment, the connecting shaft 6 was provided at the upper end of the operating shaft 5, but without providing this shaft 6,
The operating shaft 5 may be connected to the linear drive shaft 7.

As is clear from the above, according to the present invention, the insertion tube connected to the operating shaft is fitted into the receiver tube fixed to the upper end of the guide tube, and these are fixed with setscrews. There is no inconvenience of the operation shaft being accidentally pulled out and the antifreeze faucet being opened when another object hits the case or the like, or when an attempt is made to lift it by mistake.

In addition, when inserting or removing the operating shaft (usually 1 to 2 m in length) from the guide tube for repairing an antifreeze faucet, pull out the insertion tube from the receiver tube and tighten the set screw on the sleeve facing the notched recess. By loosening and releasing the connection, the operation shaft can be separated from the driving parts such as the drive shaft, which improves work efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view, FIG. 2 is a vertical sectional view of the main part, FIG. 3 is a front view of the main part, and FIG. 4 is a front view of the main part. It is a longitudinal cross-sectional view with a part omitted. 1... Guide pipe, 19... Anti-freeze faucet, 20...
Plug body, 26... Valve stem, 2... Receiver, 5... Operating shaft, 9... Handle, 7... Drive shaft, 10... Bearing, 11... Insertion cylinder, 14... Notch recess, 13...
...Threaded hole, 18, 18... Set screw, 15... Sleeve.

Claims (1)

[Scope of utility model registration request] A receiver is fixed to the upper end of a guide tube whose lower end is fixed to the stopper body of the antifreeze faucet, and an operating shaft whose lower end is connected to the valve stem of the antifreeze faucet is inserted into the guide tube, An insertion tube that fits tightly into the receiving tube is fixed to the outside of the bearing through which the lower part of the drive shaft, which moves up and down by the operation of a motor or handle, is inserted, and a notched recess and a screw hole are formed in the insertion tube. The tip part is fitted into the receiving cylinder, and a set screw is screwed into a screw hole formed opposite to the screw hole to fix the receiving cylinder and the insertion cylinder. An opening/closing device for an antifreeze faucet, characterized in that a sleeve is fitted onto the operating shaft and the drive shaft and connected by screwing, and the screw is exposed to the notch.