JP2010126935A - Antifreezing faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antifreezing faucet which enables an opening/closing operation to be surely and properly performed without use of power of a motor etc. by an easy operation such as a pushing operation. <P>SOLUTION: The antifreezing faucet includes: a valve mechanism portion body 10 which is connected to a pipeline of a water passage pipe; a valve seat portion 21 which is provided integrally with the valve mechanism portion body 10, and which is equipped with a water passage hole 22 making downside and upside water supply channels 11 and 12 communicate with each other; a valve body portion 25 which can shut off water by abutting on the seal portion of the valve seat portion 21 from below so as to close the water passage hole 22; a rod portion 30, the lower end of which is provided with the valve body portion 25, which is formed like a rod, which has an operation portion 50 linked to an upper end, and which brings about a water passing state by releasing the closing of the water passage hole 22 by the valve body portion 25 during a descent; and a spring 33 which is arranged between the rod portion 30 and the valve body portion 25, and a spring retainer portion 35a integrally provided in the valve mechanism portion body 10, and which urges the rod portion 30 and the valve body portion 25 upward. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a non-freezing water faucet that is connected to a water supply pipe of a water supply source buried in the ground such as a water pipe, opens and closes a water supply channel, and prevents freezing by draining water when the water is stopped.

Conventionally, the operation of opening and closing the water supply channel related to the antifreeze faucet is to move the spindle forward and backward by a screwing operation (screw rotation operation) by the operation unit, and to open and close the water supply channel by a valve body linked to the spindle. there were.
Moreover, in the general antifreeze water faucet, the valve body has a structure that closes the water supply passage by abutting from above the valve seat of the water passage hole having the seal portion on the upper surface (see Patent Document 1). ).

  On the other hand, the present patent applicant has proposed an antifreeze water faucet (valve device) in which the water passage hole is closed from the upstream side of the water supply channel by a valve body (see Patent Document 2). Also in this valve device, the opening / closing operation is performed by the rotation operation of the screw by the operation unit, and cannot be performed by one touch or automatically.

JP 2007-327249 A (summary, FIG. 1) Japanese Patent Laid-Open No. 10-259882 (Abstract, FIGS. 1 and 8)

The problem to be solved regarding the antifreeze faucet is that, in the conventional antifreeze faucet, the opening and closing operation is performed by the rotation operation of the screw by the operation part, and a means for opening and closing more easily by the pressing operation is provided. It is not in the point.
Accordingly, an object of the present invention is to provide an antifreeze water faucet that can be opened and closed reliably and appropriately by a simple operation such as a pressing operation without using power of a motor or the like.

The present invention has the following configuration in order to achieve the above object.
According to one embodiment of the antifreeze faucet according to the present invention, the water pipe is connected to a water supply pipe buried in the ground such as a water pipe, opens and closes the water supply channel, and freezes by draining water when the water stops. A non-freezing water faucet, comprising a lower water supply channel connected to the conduit of the water pipe, and a valve mechanism main body serving as a base of an upper water supply channel provided on the upper side of the lower water supply channel; A valve hole provided integrally with the valve mechanism body, communicating with the lower water supply passage and the upper water supply passage, and a valve seat portion having a seal portion on the lower surface side of the water supply hole, A valve body part that can close the water passage hole and stop the water by contacting the seal part of the valve seat part from below, and the valve body part is provided at the lower end part, and is in a rod shape extending in the vertical direction. It is formed so that it can be moved up and down in the axial direction, and the operation part is linked to the upper end part. The rod portion that is in a water-permeable state by releasing the blockage of the rod, the rod portion and the valve body portion, and a spring receiving portion that is provided integrally with the valve mechanism body, and the rod And a spring for urging the valve body portion upward.

  Moreover, according to one form of the antifreeze water faucet concerning this invention, the said valve body part was provided in the main valve body fixed to the lower end side of the said rod part, and this main valve body and the said rod part. When the main valve body is pushed up together with the rod portion, the main valve body and the seal portion of the valve seat portion are fitted to the rod portion so as to be movable up and down within a predetermined displacement range with respect to the stopper portion. And a top valve body that closes the water passage hole of the valve seat portion before the top valve body is pushed down from the seal portion by the stopper portion. A water flow groove provided in at least one of the fitting portions of the rod portion and the top valve body so as to open a part of the water flow hole when separated from the top valve body. Can be a feature.

  Moreover, according to one form of the antifreeze water faucet concerning this invention, while being provided so that it may communicate with the exterior on the surrounding wall which is provided integrally with the said valve mechanism part main body, and forms the base of the said upper side water supply channel. The drain hole inside the peripheral wall is opened upward, and the rod part is fitted to the rod part so as to be movable up and down within a predetermined range, and the drain hole is brought into contact with the drain hole opening from above. A drain hole valve body that closes, a push-down spring that is arranged between the drain hole valve body and a receiving portion provided in the rod portion and urges the drain hole valve body to push down; and the rod A projecting portion provided in a radially projecting manner on the rod portion so as to push up the drain hole valve body by abutting from the lower side of the drain hole valve body when the portion rises. And the contacted portion of the drain hole valve body, As the drain hole valve element can be supported in a state of being inclined, it can be characterized in that it is partially configured in the circumferential direction.

Further, according to one aspect of the antifreeze faucet according to the present invention, the drainage hole allows drainage from the inside of the peripheral wall forming the upper water supply channel to the outside, but the entrance from the outside to the inside is allowed. A blocking sphere for blocking is disposed, and the sphere is biased from the outside to the inside by a spring for the check.
Further, according to one aspect of the antifreeze faucet according to the present invention, the drainage hole valve body is a contacted surface from which the drainage hole valve body is contacted from above, and is provided with a part of which is provided with the opening of the drainage hole. The surface may be provided intermittently on a circle concentric with the axis of the rod portion.

Moreover, according to one form of the antifreeze water faucet concerning this invention, when the said operation part is provided in the upper end part of the said rod part and this rod part descend | falls and water-passes, it will maintain the state A locked portion held by the locked portion and a locking claw portion locked to the locked portion, and the locked state is achieved by an outward spring force substantially perpendicular to the axis of the rod portion. It can be characterized by comprising a locking body that can be maintained.
Further, according to one form of the antifreeze faucet according to the present invention, the push provided so as to be able to be raised and lowered so as to contact the rod portion from above and to push down the valve body portion via the rod portion. It is characterized by comprising a button and a push button returning means for returning to an initial position where the push button is not pressed.

  Further, according to one aspect of the antifreeze faucet according to the present invention, the locked state with respect to the locked portion by the locking claw portion by being pushed inward substantially orthogonal to the axis of the rod portion. It is possible to provide a release button for canceling.

  Moreover, according to one form of the antifreeze water faucet concerning this invention, it has a spring force in the direction substantially orthogonal to the axial center of the said rod part, and a spring force becomes weak when it becomes below setting temperature. A shape memory spring, a bias spring that balances the urging force of the shape memory spring, and a position sandwiched between the two springs, and resists the spring force of the locking body when the temperature falls below a preset temperature. And a release pressing member that releases the locked state of the locked claw portion with respect to the locked portion by being displaced toward the shape memory spring side.

  Moreover, according to one form of the antifreeze faucet according to the present invention, the upper water supply channel can be opened in the peripheral wall forming the upper water supply channel so as to allow air to enter inside during drainage. An intake valve may be provided that closes when water is passed through.

  The antifreeze faucet according to the present invention has a particularly advantageous effect that the opening / closing operation can be performed reliably and appropriately by a simple operation such as a pressing operation without using the power of a motor or the like.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode of an antifreeze faucet according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a longitudinal sectional view showing a water flow state (a state where a water flow operation is performed) of an embodiment of an antifreeze faucet according to the present invention. FIG. 1A is an overall side cross-sectional view of an antifreeze faucet, and shows an example of the configuration of a portion to which an upper currant is connected and an intake valve. Moreover, FIG.1 (b) is front front sectional drawing of an antifreeze water faucet, Comprising: The example of the form of the mechanism in which a latching body hold | maintains the state which descended the rod part is shown. FIG. 2 is an overall side cross-sectional view showing the drained state of the embodiment of FIG. 1 and an enlarged cross-sectional view of the intake valve.
This antifreeze water faucet is connected to a water supply pipe of a water supply source buried in the ground such as a water pipe, and opens and closes the water supply channel, and drains water when water is stopped to prevent freezing.

Reference numeral 10 denotes a valve mechanism body, which includes a lower water supply passage 11 connected to a conduit of a water pipe (for example, a water pipe 111 (see FIG. 20)), and an upper water supply provided on the upper side of the lower water supply passage 11. It is the base of the road 12.
The valve mechanism main body 10 of this embodiment is configured such that the connection main body 13, the valve box 14, and the guide bush 15 are connected in that order from the bottom and are integrally provided in a watertight state by the O-ring packings 16 and 17. Yes. A lower end portion of the valve mechanism body 10 is a connection screw portion 18 connected to the water pipe. Further, the upper end portion of the valve mechanism main body 10 is a connection screw portion 19 connected to the pipe of the rising pipe 20 that is an extension of the upper water supply passage 12. Reference numeral 101 denotes an outer cylinder, which supports the riser pipe 20 through a middle joint 102 therein.

Reference numeral 21 denotes a valve seat portion, which is provided integrally with the valve mechanism main body 10, and seals a water passage hole 22 for communicating the lower water supply passage 11 and the upper water supply passage 12, and a lower surface side of the water passage hole 22. The unit 23 is provided.
The valve seat portion 21 of this embodiment is formed on the inner peripheral portion of the valve box 14 (see FIGS. 3 and 4). FIG. 3 is a perspective view of the valve box 14, and FIG. 4 is a plan view of the valve box 14.

Reference numeral 25 denotes a valve body portion, which is provided so as to be able to close the water passage hole 22 and stop the water by contacting the seal portion 23 of the valve seat portion 21 from below. Thus, the valve body portion 25 is configured to contact the valve seat portion 21 from the lower side, which is the upstream side of the water supply passage, so that the water passage hole 22 is reliably and appropriately closed by the action of water pressure and a spring 33 described later. be able to.
As will be described later, the valve body portion 25 of the present embodiment has a structure in which the water passage hole 22 is opened and closed in two stages by a main valve body 26 and a top valve body 27. Thus, by the structure which opens the water flow hole 22 by two steps of operation | movement, it can operate smoothly with small force.

Reference numeral 30 denotes a rod portion. A valve body portion 25 is provided at a lower end portion, is formed in a rod shape extending in the vertical direction, and is arranged so as to be movable up and down in the axial direction, and an operation portion 50 is linked to the upper end portion and lowered. In such a case, the water passage state can be obtained by releasing the blockage of the water passage hole 22 by the valve body portion 25.
In addition, the rod part 30 of this example is comprised by the form by which the rod lower end part 30a, the rod main part 30b, and the rod upper end part 30c were arranged in series from the bottom in that order.

  And the valve body part 25 of this embodiment was provided in the main valve body 26 fixed to the lower end side of the rod part 30, and the main valve body 26 and the rod part 30 (midway part of the rod lower end part 30a). When the main valve body 26 is pushed up together with the rod portion 30 so as to be vertically movable on the rod portion 30 within a predetermined displacement range with respect to the stopper portion 31, the main valve body 26 and the valve seat portion 21 are It is comprised by the top valve body 27 which is pinched | interposed between the seal parts 23 and closes the water flow hole 22 of the valve seat part 21. FIG. Moreover, the main valve body 26 is comprised by the valve base part 26a and the plate packing 26b, and is screwed and fixed to the front-end | tip of the rod part 30 (refer FIG. 11). The top valve body 27 is composed of a top 27a and a top packing 27b, and a rod lower end 30a is inserted into a through hole 27c provided at the center (see FIG. 11).

32 is a water flow groove, and before the top valve body 27 is pushed down from the seal portion 23 by the stopper portion 31, and when the main valve body 26 is lowered and separated from the top valve body 27, It is provided in at least one of the fitting parts of the rod part 30 and the top valve body 27 so as to open a part.
The water passage hole 22 and the valve body portion 25 form a valve mechanism in which the water passage hole 22 is gradually opened and closed. For this reason, while being able to open the water flow hole 22 smoothly, generation | occurrence | production of a water hammer phenomenon can be prevented when closing.
As shown in FIG. 5, in the water flow groove 32 of this embodiment, a plurality (three) of the rod lower end portion 30 a of the rod portion 30 are provided in a streak shape. Fig.5 (a) is sectional drawing of the rod lower end part 30a, FIG.5 (b) is AA sectional drawing of Fig.5 (a). The form of the water flow groove 32 is not limited to this. For example, the water flow groove 32 may be formed on the inner peripheral surface of the top valve body 27 and may have a shape that allows water to flow substantially in a groove shape.

Reference numeral 33 denotes a spring, which is arranged between the rod part 30 and the valve body part 25 and a spring receiving part 35a provided integrally with the valve mechanism part body 10, and moves the rod part 30 and the valve body part 25 upward. Energized.
In this embodiment, the spring guide 35 (see FIG. 6) is screwed to the lower end side of the valve box 14 (see FIG. 3) that constitutes the intermediate portion of the valve mechanism body 10 so that the spring receiving portion 35a is engaged. Is provided. 6A is a perspective view of the bottom surface side of the spring guide 35, and FIG. 6B is a perspective view of the spring guide 35 on the plane side. The spring 33 is disposed in the cylindrical pocket inside 35b of the spring guide 35, so that its expansion and contraction operation is suitably guided.

37 is a drainage hole, provided integrally with the valve mechanism body 10 and forming the base of the upper water supply channel 12 so as to communicate with the outside, and a drainage hole inside the peripheral wall 12a. The opening 37a is open upward.
The drainage hole 37 of the present embodiment is provided in the valve box 14 constituting the intermediate part of the valve mechanism body 10 (see FIGS. 3 and 4).

Reference numeral 38 denotes a drain hole valve body, which is fitted to the rod portion 30 so as to be movable up and down within a predetermined range, and is provided so as to contact the drain hole opening 37a from above to close the drain hole 37. .
The drain hole valve body 38 of the present embodiment has a ring-shaped packing 38b fixed to the valve base 38a, and a hole 38c through which the rod portion 30 (rod lower end 30a) is inserted in the circular center portion. A pair of holes 38d through which water is passed are provided in the middle part of these (see FIG. 7). FIG. 7 is a perspective view of the drain hole valve body 38.

Reference numeral 39 denotes a push-down spring, which is arranged between the drain hole valve body 38 and the receiving portion 40 provided on the rod portion 30 and urges the drain hole valve body 38 to be pushed down.
In addition, although the receiving part 40 of this example is comprised by the E-type retaining ring externally fitted by the rod lower end part 30a, it is not limited to this, For example, it is formed integrally with the rod lower end part 30a. Also good.

Reference numeral 41 denotes an overhanging portion, which is provided to project from the rod portion 30 in the radial direction so as to come into contact with the lower side of the drain hole valve body 38 and push up the drain hole valve body 38 when the rod portion 30 is raised. ing. Then, the contact portion 41a of the overhang portion 41 and the contacted portion 38e of the drain hole valve body 38 are partially supported in the circumferential direction so that the drain hole valve body 38 can be supported in an inclined state. It is structured. In the present embodiment, the overhanging portion 41 is partially configured by a pin fixed so as to protrude laterally from the rod lower end portion 30a.
According to the projecting portion 41, the drain hole 37 can be opened and closed while the drain hole valve body 38 is supported in an inclined state within the range of play fitted to the rod lower end 30a.
According to this opening / closing operation, the drain hole 37 can be gradually opened and closed, and the operation can be smoothly performed.

The drain hole 37 is provided with a check sphere 42 that allows drainage from the inside of the peripheral wall 12a forming the upper water supply channel 12 to the outside, but prevents entry from the outside to the inside. 42 is biased from the outside to the inside by a check spring 43. Backflow can be reliably prevented by the urging force of the check spring 43.
Further, a drain outlet 37b is provided inside the outer cylinder 101, and the drain is discharged from the lower end 103 of the outer cylinder 101 into the ground. According to this, while draining at the time of draining, it can flow smoothly, and it can prevent suitably that soil and sand flow in backward.

Further, a receiving surface 44 on which the drain hole valve body 38 is abutted from above and provided with a drain hole opening 37a in part is formed on a circle concentric with the axis of the rod portion 30. Are intermittently provided (see FIGS. 3 and 4).
According to this, the load that contacts the receiving surface 44 of the drain hole valve body 38 is concentrated, and the drain hole opening 37a can be reliably and appropriately closed. Further, when the drain hole valve body 38 is separated from the receiving surface 44 and opens the drain hole opening 37a, the drain hole valve body 38 can be prevented from being excessively adhered to the receiving surface 44 and can operate smoothly.

Next, the operation part 50 linked to the upper end part of the rod part 30 will be described. FIG. 8 is a perspective view showing an upper appearance of the antifreeze faucet provided with the operation unit 50.
Reference numeral 51 denotes a locked portion, which is provided at the upper end portion of the rod portion 30 as shown in FIG. 1 (b), FIG. 15 and the like, and maintains its state when the rod portion 30 descends and passes water. It is a part to be held.
In this embodiment, the lower edge portion of the slit hole 52 provided in the cylindrical rod upper end portion 30c connected in series to the rod main portion 30b is the locked portion 51 (see FIG. 9). ). FIG. 9 is a perspective view of the rod upper end 30c.

  The rod upper end portion 30 c is a piston portion that moves up and down with respect to a cylinder portion 55 that is connected to the upper portion of the riser pipe 20 and is mounted inside the upper peripheral wall 12 b that extends the upper water supply passage 12. A cylindrical upper end portion 53 of the rod upper end portion 30c is closed, and a lower end of a pressing rod portion 62 of a push button 60 described later is brought into contact with the upper end portion 53 so as to be pressed.

  Further, a pair of slit hole-shaped communication portions 54 are provided on the peripheral wall of the rod upper end portion 30c. Corresponding to the communication portion 54, a pair of slit hole-like communication portions 56 are also provided on the side wall of the cylinder portion 55. The communication portions 54 and 56 of both are formed as a part of the upper water supply channel 12 so that water can be supplied to the connecting portion 65 (see FIG. 8 and the like) of the currant.

Reference numeral 70 denotes a locking body, which has a locking claw portion 73 to be locked to the locked portion 51 and has its locking state by an outward spring force substantially perpendicular to the axial center of the rod portion 30. Can be maintained.
The locking body 70 according to the present embodiment includes an inverted U-shaped portion 71 that is formed in an inverted U-shape and generates an elastic force, and a locking formed as a portion that extends integrally at one end thereof. The nail | claw part 73 and the to-be-pressed part 72 provided in the shape which protruded outside while the part of the latching claw part 73 and the reverse U-shaped part 71 continued were formed. The locking body 70 is substantially accommodated in the rod upper end portion 30 c except for the pressed portion 72.

Further, the pressed portion 72 of the locking body 70 is fitted in a state of being inserted into an opening 57 provided on the side wall of the cylinder portion 55. Accordingly, even when the rod upper end portion 30c moves up and down (lifts and lowers) in the cylinder portion 55, the locking body 70 is locked to the cylinder portion 55 without displacing the vertical position.
In addition, the form of the latching body 70 is not restricted to this, For example, it is good also as a form which makes the latching claw part 73 latch to the to-be-latched part 51 with the spring force of a spring (helical spring).

Reference numeral 60 denotes a push button (see FIG. 8 and the like), which is provided so as to be able to move up and down so as to contact the rod portion 30 from above and to push down the valve body portion 25 via the rod portion 30.
The push button 60 of the present embodiment is provided with a pressing bar portion 62 integrally fixed to a button portion 61, and the lower end of the pressing bar portion 62 is formed so as to press the rod upper end portion 30c.

When the hand is released from the state where the push button 60 is pushed, the push button 60 returns to the original position by receiving the water pressure filled up to the upper part of the upper water supply channel 12 at the lower end of the push rod portion 62.
According to this, by the through-hole 63 provided in the water supply path upper end closing part 12c, and the pressing rod part 62 provided as a pressure receiving surface that is inserted through the through-hole 63 and the lower end part 62b also serves as a stopper. A push button return means 64 is provided.
The push button returning means for returning the push button 60 to the initial position where the push button 60 is not pushed can also be configured by arranging a spring between the upper surface of the water supply path upper end closing portion 12 c and the push button 60.
The operation of the push button 60 by the operator is only to be pressed when water passage is started, and is not used for other operations. Further, when the operator is not pushing, the push button 60 remains at the initial position as shown in FIG.

Reference numeral 80 denotes a release button (see FIG. 8 and the like), which is released in an inward direction substantially perpendicular to the axis of the rod portion 30 to release the locked state of the locked portion 51 by the locking claw portion 73. be able to.
The release button 80 of the present embodiment is brought into contact with the locking body 70 from the side, and is pushed so that the locked state of the locked portion 51 by the locking claw portion 73 of the locking body 70 can be released. Is provided. Further, the release button 80 is provided with a pressing bar portion 82 integrally fixed to the button portion 81, and the distal end of the pressing bar portion 82 is engaged with a locking body 70 via a release pressing member 90 described later. The pressed part 72 is pressed.

The release button 80 is arranged so as to be returned to the initial position where it is not pressed by the spring force (elastic repulsive force) of the locking body 70.
Further, the operation of the release button 80 by the operator is only to press when stopping water and starting draining, and is not used for other operations. The release button 80 remains in the initial position as shown in FIG. 1B or the like by the action of the spring force and the water pressure of the locking body 70 when the operator does not press it.

Reference numeral 85 denotes a shape memory spring, which has a spring force in a direction substantially perpendicular to the axis of the rod portion 30 and is provided so that the spring force is weakened when the temperature falls below a set temperature.
Reference numeral 86 denotes a bias spring, which is arranged so as to face the biasing force of the shape memory spring 85. These two springs 85 and 86 are accommodated in the upper part of the outer cylinder 101 and are arranged so as to form a part of the upper water supply channel 12, and are opposed openings of a cross 87 forming an internal space opened in six directions. Located in.

  A release pressing member 90 is positioned between the shape memory spring 85 and the bias spring 86, and resists the spring force of the locking body 70 when the temperature becomes equal to or lower than the set temperature. By being displaced to the side, the locking claw 73 is provided so as to release the locking state of the rod portion 30 with respect to the locked portion 51.

  The release pressing member 90 of the present embodiment is formed in a rectangular frame (cube) shape as shown in FIG. 10, and the cylinder portion 55 and the rod upper end are formed in a space 91 opened in the vertical direction in the interior. It arrange | positions in the state by which the part 30c and the latching body 70 are penetrated. In addition, 92 is a communicating part, and is opened so that water can be supplied to the connecting part 65 of the currant. Reference numeral 93 denotes a spring holding portion which is provided so as to protrude from the outer surface and is formed so that one end side of the bias spring 86 is fitted.

Reference numeral 95 denotes an intake valve, which can be opened in the upper peripheral wall 12b forming the upper water supply passage 12 so as to allow air to enter inside during drainage, and water is passed through the upper water supply passage 12. In some cases, it is provided to close.
As shown in the enlarged view of FIG. 2, the intake valve 95 of the present embodiment includes an intake hole 96, a float valve 97 that opens and closes the intake hole 96, a valve seat portion 98 that is in pressure contact with the float valve 97, An O-ring packing 98a disposed as a seal portion of the valve seat portion 98, a spring 99 that biases the float valve 97 in a closing direction, and a stopper fixed to the shaft portion 97a of the float valve 97 as a receiving portion of the spring 99 The ring 97b is a component.

The float valve 97 is formed so as to be in contact with the O-ring packing 98a of the valve seat portion 98 from the inside so as to be watertight. Further, a communication hole portion 97c that is open to the outside is formed inside the columnar sliding portion (shaft portion 97a) that is formed in a T-shaped cross section and is fitted in the air intake hole 96, and is formed at the back of the communication hole portion 97c. A communication portion 97d that opens to the side at a part is provided.
According to this, when the water is drained and the inside of the upper water supply passage 12 constituted by the riser pipe 20 and the like is depressurized, the float valve 97 is disposed inside as shown in the enlarged view of FIG. The outside air is sucked into the interior as indicated by the dotted arrows. Thereby, the water in the upper side water supply path 12 can be drained smoothly.

Next, the operation and operation of the antifreeze faucet having the above configuration will be described.
First, operation | movement of a valve mechanism part is demonstrated based on FIG.1, FIG.2, FIG.11-14.
FIG. 11 is a cross-sectional view of the valve mechanism portion showing a state where water is stopped and water is drained, and the flow of water is indicated by arrows. At this time, the upper operation unit 50 is as shown in FIG. When the drainage is completed, the operation state of each valve (the main valve body 26 and the coma valve body 27 of the valve body 25, and the drain hole valve body 38) is maintained, and a normal water stop state is obtained. This is because the valve body 25 is pressed upward by the action of the water pressure and the spring 33 and the water passage hole 22 can be reliably closed.

Next, a description will be given of an operation of bringing the water flow state with one touch by pressing the push button 60. FIG. 12 is a cross-sectional view of the valve mechanism for explaining the progress of the water flow operation. FIG. 13 is a cross-sectional view of the antifreeze faucet explaining the start state of water flow. FIG. 13A is an overall side cross-sectional view, and FIG. 13B is a front upper cross-section. Moreover, FIG. 14 is sectional drawing of the valve mechanism part explaining the completion state of water flow operation.
First, when the push button 60 is pushed a little, the drain hole valve body 38 closes the drain hole opening 37a as shown in FIG. Further, the main valve body 26 moves away from the top valve body 27.

When the push button 60 is further pressed, water begins to flow through the water flow groove 32 of the rod lower end 30a as shown in the enlarged view of FIG. At this time, the water passage hole 22 is small and only a small amount of water flows, the water pressure serving as resistance is small, and the force pushing the push button 60 may be small. The top valve body 27 is still pushed by the water pressure and is stuck to the seal portion 23 of the valve seat portion 21.
Thus, when water flows to the upper water supply channel 12 side, the pressure difference due to the hydrostatic pressure between the lower water supply channel 11 and the upper water supply channel 12 is reduced with the water passage hole 22 as a boundary. For this reason, the force which pushes the next piece valve body 26 will also be small, and the operation by the push button 60 can be performed appropriately with a light pressing force.

  Further, when the flowing water reaches the periphery of the shape memory spring 85, when the air temperature is lower than the temperature of the water, it is warmed by the filled water. Here, regarding the arrow in FIG. 13B, F1 is the force of the shape memory spring 85, F2 is the force of the bias spring 86, and F3 is the force of returning to the original state of the locking body 70. When the air temperature is lower than the set temperature of the shape memory spring 85, the balance of the spring force is F1 + F3 ≦ F2. When the shape memory spring 85 is warmed by water, the balance of the force of the spring becomes F1 + F3 ≧ F2, and the release pressing member 90 is biased in a direction to slide toward the bias spring 86 side. Further, F1 ≧ F2, and the release pressing member 90 is biased so as to be in the position at the time of water flow.

When the push button 60 is further pressed, the top valve body 27 is detached from the seal portion 23 of the valve seat portion 21 as shown in FIG. 14, and a normal amount of water flows. Accordingly, the rod upper end 30c is lowered to a position where the locking claw 73 at the tip of the locking body 70 is hooked and locked to the locked portion 51 of the rod upper end 30c. And when the latching body 70 returns to the original form, the latching claw portion 73 comes into contact with and latches with the latched portion 51 of the rod upper end 30c, and keeps the water flow state ( (Refer FIG.1 (b)).
Then, when the hand is released from the push button 60, the push button 60 returns to the original position by the water pressure filled up to the upper part of the upper water supply channel 12 (see FIG. 15).

  Next, the operation | movement which concerns on the automatic draining in the operation part 50 is demonstrated based on FIG.1, FIG.2, FIG.15-17. The arrows in the figure indicate that F1 is the force of the shape memory spring 85, F2 is the force of the bias spring 86, F3 is a force for returning to the original state of the locking body 70, and F4 moves the rod portion 30 upward by the spring 33. The pressing force, F5, is the frictional resistance force of the locking body 70 (the frictional resistance between the tip of the locking claw 73 and the locked portion 51, and the pressed portion 72 of the locking body 70 and the contact portion of the cylinder portion 55 by F4) Force is generated).

First, when the temperature (water temperature) around the shape memory spring 85 is, for example, 4 ° C. or higher, the force relationship of F1 ≧ F2 is maintained, and the cube (the release pressing member 90) maintains the state of FIG. Can be set to
Then, when the temperature (water temperature) around the shape memory spring 85 becomes less than 4 ° C., for example, the force relationship of F1 <F2 is established, and F1 and F2 can be set to try to balance from the state of FIG. . As a result, a force that moves the shape memory spring 85 in the contracting direction is applied to the release pressing member 90. Then, the release pressing member 90 comes into contact with and presses the pressed portion 72 of the locking body 70.
However, even if the temperature around the shape memory spring 85 (water temperature) further decreases, the force relationship is F1 + F3 + F5 ≧ F2 up to a certain temperature, and the release pressing member 90 does not slide (see FIG. 15).

Then, when the temperature (water temperature) around the shape memory spring 85 further decreases and becomes, for example, 2 ° C. ± 0.5 ° C. or less, it can be set such that F1 + F3 + F5 <F2.
When the conditions set in this way are exceeded, as shown in FIG. 16, the release pressing member 90 is moved in the direction in which the shape memory spring 85 is contracted by pressing the pressed portion 72 of the locking body 70. Will be. Thereby, the latching claw part 73 of the front-end | tip of the latching body 70 remove | deviates from the to-be-latched part 51 of the rod upper end part 30c (refer FIG. 16).

Then, as shown in FIG. 17, the rod upper end portion 30 c held by the locking claw portion 73 being locked and the rod portion 30 including the rod upper portion are moved upward by the urging force (F 4) of the spring 33. Moved to. As a result, the water passage hole 22 is closed by the valve body 25 to stop water, and the drain hole 37 is opened to drain water (see FIG. 11).
According to the operation described above, when the predetermined temperature is set, the water stop and drain operation are automatically performed by the function of the shape memory spring 85. According to this antifreeze water faucet, the operation is simplified without manual operation, and the water draining operation is performed reliably and appropriately, so that the reliability can be enhanced.

Next, the operation for forcibly draining water will be described with reference to FIG. FIG. 18 is a cross-sectional view illustrating the forced water draining step of the embodiment described above.
First, as step 1, the release button 80 is pressed.
Next, as Step 2, the locking body 70 is pushed through the release pressing member 90, and the locking claw 73 at the tip of the locking body 70 is released from the locked portion 51 of the rod upper end 30c. .
In step 3, the rod portion 30 held by the locking claw portion 73 at the tip of the locking body 70 is pushed upward by the urging force of the spring 33 of the valve mechanism portion and moved.
According to this, in addition to the structure of the automatic water drain mentioned above, it has the structure which can drain water forcibly manually. It can cope with an emergency etc. suitably and can improve the reliability.

Next, the operation in the case of an operation unit having a configuration for manual draining will be described with reference to FIG. FIG. 19 is a cross-sectional view illustrating a manual draining step in another embodiment of the operation unit of the antifreeze faucet according to the present invention.
First, as step 1, the release button 80 is pressed.
Next, as Step 2, the locking body 70 is pushed through the release pressing member 90A, and the locking claw 73 at the tip of the locking body 70 is released from the locked portion 51 of the rod upper end 30c. .
In step 3, the rod portion 30 held by the locking claw portion 73 at the tip of the locking body 70 is pushed upward by the urging force of the spring 33 of the valve mechanism portion and moved.

Further, when the pressing of the release button 80 is stopped as step 4, the release button 80 returns to the original position together with the release pressing member 90A by the repulsive force of the bias spring 86A. Also, the locking body 70 is returned until it hits the hook of the rod upper end 30c by the force of returning to the original state.
As described above, according to the antifreeze faucet of the operation unit having the manual drainage configuration, the drainage operation can be easily performed with one touch.

Next, a construction example of the antifreeze faucet column 100 according to one embodiment of the present invention will be described with reference to FIG.
The antifreeze faucet column 100 is a valve having a valve mechanism section on a water pipe 111 which is a water pipe connected to a main pipe 110 of a water supply via a stop cock 112, a water meter 113, and a check valve 114. It is connected at the lower end of the mechanism body 10.
The valve mechanism main body 10 is buried from the ground surface 115 at a depth that does not freeze in the ground, and as described above, the draining operation can be performed automatically or by one-touch operation of pressing the release button. Made. For this reason, freezing can be prevented appropriately, and even in the cold season, tap water can be used without worrying about freezing.

  As described above, the present invention has been variously described with reference to preferred embodiments. However, the present invention is not limited to the above embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

It is sectional drawing which shows the water flow state of the form example of the antifreeze faucet concerning this invention. It is sectional drawing which shows the draining state of the example of a form of FIG. It is a perspective view which shows the example of a form of the valve box which comprises a valve seat. It is a top view which shows the example of a form of the valve box of the example of a form of FIG. It is sectional drawing which shows the example of a form of a rod lower end part. It is a perspective view which shows the example of a form of the spring guide which comprises a spring receiving part. It is a perspective view which shows the example of a form of the valve body for drain holes. It is a perspective view which shows the upper external appearance of the example of a form of FIG. It is a perspective view which shows the example of a form of the piston which comprises a rod upper end part. It is a perspective view which shows the example of the form of the cube which comprises the pressing member for cancellation | release. It is sectional drawing of the valve mechanism part explaining the water stop / water draining state of the example of FIG. It is sectional drawing of the valve mechanism part explaining progress of the water flow operation of the example of FIG. It is sectional drawing explaining the water supply start state of the example of a form of FIG. It is sectional drawing of the valve mechanism part explaining the completion state of the water flow operation of the example of FIG. It is sectional drawing which shows the operation part of the water flow state of the example of FIG. It is sectional drawing explaining the state of the automatic drain operation by the said operation part. It is sectional drawing which shows the state which the automatic draining operation by the said operation part was completed. It is sectional drawing explaining the forced water draining step of the example of FIG. It is sectional drawing explaining the manual draining step in the other form of the operation part of the antifreeze faucet which concerns on this invention. It is explanatory drawing which shows the form example of the installation place of the antifreeze faucet which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Valve mechanism part main body 11 Lower side water supply path 12 Upper side water supply path 12a Peripheral wall 20 Rise pipe 21 Valve seat part 22 Water flow hole 23 Seal part 25 Valve body part 26 Main valve body 27 Top valve body 30 Rod part 31 Stopper part 32 Through Water groove 33 Spring 35a Spring receiving portion 37 Drainage hole 37a Drainage hole opening 38 Drainage hole valve body 38e Contacted portion 39 Depressing spring 40 Receiving portion 41 Overhanging portion 41a Contacting portion 42 Checking sphere 43 Spring 44 Receiving surface 50 Operation part 51 Locked part 60 Push button 65 Linking part of currant 70 Locking body 72 Pressed part 73 Locking claw part 80 Release button 85 Shape memory spring 86 Bias spring 90 Release push Member 95 Intake valve

Claims (10)

An antifreeze faucet that is connected to a water pipe of a water supply source buried underground such as a water pipe, opens and closes the water supply channel, and prevents water freezing by draining when the water stops.
A valve mechanism main body comprising a lower water supply channel connected to the conduit of the water pipe, and serving as a base of an upper water supply channel provided on the upper side of the lower water supply channel;
A valve hole provided integrally with the valve mechanism main body, communicating with the lower water supply passage and the upper water supply passage, and a valve seat with a seal portion on the lower surface side of the water passage;
A valve body portion capable of closing the water passage hole to stop water by contacting the seal portion of the valve seat portion from below;
The valve body portion is provided at the lower end portion, is formed in a rod shape extending in the vertical direction, and is arranged so as to be movable up and down in the axial direction, and the operation portion is linked to the upper end portion, and when the valve body portion is lowered, the valve body portion A rod portion that is in a water-permeable state by releasing the blocking of the water-flow hole;
A spring disposed between the rod part and the valve body part and a spring receiving part provided integrally with the valve mechanism part main body, and biasing the rod part and the valve body part upward; An antifreeze faucet characterized by The valve body can move up and down on the rod part within a predetermined displacement range between the main valve body fixed to the lower end side of the rod part and the stopper part provided on the main valve body and the rod part. When the main valve body is pushed up together with the rod portion, the top valve is sandwiched between the main valve body and the seal portion of the valve seat portion to close the water passage hole of the valve seat portion. A valve body,
The rod so as to open a part of the water passage hole when the main valve body is lowered and separated from the top valve body before the top valve body is pushed down from the seal portion by the stopper portion. The antifreeze water faucet according to claim 1, further comprising a water flow groove provided in at least one of the fitting portions of the portion and the top valve body. Drainage that is provided integrally with the valve mechanism main body and forms a base portion of the upper water supply channel so as to communicate with the outside, and in which an opening of a drainage hole is opened upward. Holes,
A drain hole valve body that is fitted to the rod portion so as to be movable up and down within a predetermined range, and that contacts the opening of the drain hole from above to close the drain hole,
A push-down spring disposed between the drain hole valve body and a receiving portion provided on the rod portion and biasing the drain hole valve body to be pushed down;
A projecting portion provided to project from the rod portion in a radial direction so as to abut from the lower side of the drain hole valve body and push up the drain hole valve body when the rod portion rises;
The contact portion of the overhang portion and the contacted portion of the drain hole valve body are partially configured in the circumferential direction so that the drain hole valve body can be supported in an inclined state. The antifreeze water faucet according to claim 1 or 2.   The drainage hole is provided with a check sphere that allows drainage from the inside of the peripheral wall forming the upper water supply channel to the outside, but prevents entry from the outside to the inside, and the sphere is for check The antifreeze faucet according to claim 1, wherein the antifreeze faucet is urged from outside to inside by a spring.   The receiving surface with which the drain hole valve body is contacted from above, and the receiving surface partially provided with the opening of the drain hole, is intermittently on a circle concentric with the axis of the rod portion. The antifreeze faucet according to any one of claims 1 to 4, wherein the antifreeze faucet is provided.   The operation portion is provided at an upper end portion of the rod portion and is held so as to maintain the state when the rod portion descends and passes water, and the operation portion is engaged with the locked portion. 2. A locking body having a locking claw portion to be stopped and capable of maintaining the locking state by an outward spring force substantially perpendicular to the axis of the rod portion. Antifreeze faucet in any one of -5.   A push button that comes into contact with the rod portion from above and that can be raised and lowered so that the valve body portion can be pushed down through the rod portion; and a push button that returns the push button to an initial position where the push button is not pushed The antifreeze faucet according to any one of claims 1 to 6, further comprising return means.   2. A release button for releasing a locked state of the locked claw portion with respect to the locked portion by being pushed inward substantially perpendicular to the axis of the rod portion. Antifreeze faucet in any one of -7. A shape memory spring having a spring force in a direction substantially perpendicular to the axial center of the rod portion, the spring force being weakened when the temperature is lower than a set temperature;
A bias spring that balances the biasing force of the shape memory spring;
The engagement between the two springs is displaced by the engagement claw portion by being displaced toward the shape memory spring against the spring force of the engagement body when the temperature is lower than a preset temperature. The antifreeze water faucet according to any one of claims 1 to 8, further comprising a release pressing member that releases a locked state with respect to the stop portion.   The peripheral wall forming the upper water supply channel is provided with an intake valve that can be opened so as to allow air to enter the interior during drainage, and is closed when water flows into the upper water supply channel. The antifreeze water faucet according to any one of claims 1 to 9, wherein

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