JP2017160758A - Faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique of a faucet capable of restraining vibration of a water cut-off valve and generation of abnormal noise.SOLUTION: A faucet includes a water flowing pipe part 18 which communicates with a faucet body 10 and in which a water flowing passage 16 is provided, and a first valve member which moves along the water flowing passage 16. The first valve member includes a valve element part, and a pushing rod part extending to the downstream side from the valve element part and pushing the valve element part to the upstream side by being pushed to the upstream side. The pushing rod part includes a piller part extending to the downstream side from the valve element part, a plurality of plate-like parts fixed to the piller part at the inner circumference side and respectively arranged at intervals along the circumferential direction, and a cylindrical part fixed to the downstream side of the plurality of plate-like parts.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a faucet for supplying water to a device that uses water.

  A faucet is known that is installed on a wall or the like and attaches a hose to be connected to a water purifier or a washing machine. For example, Patent Literature 1 discloses a faucet for a washing machine, which is a faucet installed on a wall, and a washing machine connecting member is connected to a channel outlet and supplies water to the washing machine via a hose. Is described.

JP 2000-233062 A

  By the way, the water faucet described in Patent Document 1 is a cylindrical body that is provided in the cylindrical body by moving the cylindrical body in the same direction as the flow, and a cylindrical body that is inserted into the flow path so as to freely advance and retract. And a valve structure having a valve body for closing the outlet. Further, the cylinder body is constantly urged in the valve body direction by the urging means, and the cylinder body is configured to be movable against the urging means by the cylinder moving means. Such a valve structure constitutes a water stop valve for preventing water leakage to the outside when the hose is disconnected.

  Further, in the faucet described in Patent Document 1, a rod body for moving the cylinder body is connected to the cylinder body via a transmission member, and a rod body stopper is provided at the tip of the rod body. The rod stopper has a cross shape including four projecting portions projecting in four directions toward the outer peripheral side. On the other hand, a joint portion including a rod body stopper receiving portion is provided at the tip of the washing machine connecting member, which is a joint portion to which a hose is connected. When the washing machine connecting member is connected to the outlet of the flow path, the rod stopper receiving portion of the joint portion and the rod stopper having a cross shape come into contact with each other, and the cylinder is moved in the direction opposite to the water flow through the rod stopper. It is configured to move to. In other words, when the rod stopper is pushed up, the flow path is released, and when the washing machine connecting member connecting the hose comes out, the cylinder is lowered and the flow path is blocked.

  In such a faucet, in order to supply water to a device such as a washing machine, it is desired to increase the flow rate of water. However, in a faucet having such a conventional water stop valve, the rod stopper of the water stop valve closes the center of the entrance of the joint part of the washing machine connecting member. May increase and the stop valve may vibrate and noise may occur. Even when the flow path is narrowed by the transmission member or the rod and the water flow is not uniform, the water stop valve may vibrate and noise may be generated. Such vibrations and abnormal noise may cause discomfort to general users.

  As described above, the conventional faucet has room for improvement from the viewpoint of suppressing vibration of the water stop valve and generation of abnormal noise even when the water flow is increased.

  The objective of this invention is providing the technique of the water tap which can suppress generation | occurrence | production of the vibration and noise of a water stop valve.

  In order to solve the above-described problem, a faucet according to an aspect of the present invention includes a water conduit portion that communicates with a faucet body and has a water passage formed therein, a first valve member that moves along the water passage, Is provided. The first valve member includes a valve body portion and a push rod portion that extends downstream from the valve body portion and pushes the valve body portion upstream by being pushed upstream. The push rod portion includes a column portion extending downstream from the valve body portion, a plurality of plate-like portions each having an inner peripheral side fixed to the column portion and arranged at intervals in the circumferential direction, and a plurality of plate-like portions. A cylindrical portion fixed to the downstream side.

  According to this aspect, the push rod portion includes a plurality of plate-like portions extending downstream, so that the flow path of water can be widened, and the downstream cylindrical portion serves as a central portion of the entrance of the joint portion. Since there is no blockage, the vibration of the downstream valve member can be suppressed by reducing the circumferential deviation of the water flowing into the joint.

  ADVANTAGE OF THE INVENTION According to this invention, the technique of the water tap which can suppress generation | occurrence | production of the vibration and abnormal noise of a water stop valve can be provided.

It is a front view of the faucet concerning the embodiment of the present invention. It is a side view of the faucet concerning the embodiment of the present invention. It is sectional drawing of the water tap which concerns on embodiment of this invention. Fig.4 (a) is an expanded sectional view of the periphery of the water flow pipe part of FIG. FIG. 4B is a cross-sectional view showing a state where both the upstream valve member and the downstream valve member have moved to the closed position. It is sectional drawing which decomposes | disassembles and shows the periphery of the water flow pipe part of FIG. It is a perspective view of the downstream valve member of FIG. It is the sectional view on the AA line of the downstream valve member of FIG. FIG. 7 is a cross-sectional view of the downstream valve member of FIG. It is a side view of the downstream valve member of FIG.

  First, the background to the present invention will be described. The present inventors examined the shape of the contact part of the rod which pushes the valve member. The contact portion is a portion that is provided at the downstream end of the rod body and contacts the receiving portion of the joint portion. If the contact part has a cross shape consisting of four protrusions protruding in all directions toward the outer periphery, the contact part will vibrate and generate abnormal noise when the water flow rate of the faucet is increased. The phenomenon that occurred was seen. This phenomenon is considered to be caused by the fact that when the water flow flows on both sides of the cross-shaped protrusion, lift is generated by the water flow at the protrusion. In other words, since the water flow is not uniform and includes turbulent flow, the lift force acting on the protrusion changes greatly with time, and the protrusion receives a random load. It is thought to do. In particular, it is considered that when the flow rate of the water flow of the faucet increases, the random lift generated in the protruding portion also increases, and vibration and noise are likely to occur.

Based on these considerations, when the contact portion is a cylindrical shape surrounding the center portion of the receiving portion of the joint portion, the contact portion closes the center portion of the receiving portion of the joint portion. As compared with the case where it is, when the flow rate was increased, it was found that vibration and abnormal noise hardly occur. This is because when the contact portion has a cylindrical shape surrounding the central portion, the water flow mainly passes through the inside of the cylinder, so even if the water flow includes turbulent flow, the change in lift averaged in the circumferential direction is reduced. It is considered that vibration is less likely to occur.
The present invention has been made to alleviate the vibration of the contact portion caused by the water flow based on such knowledge.

  The present invention will be described below based on preferred embodiments with reference to the drawings. The same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated descriptions are appropriately omitted. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Also, in the drawings, some of the members that are not important for describing the embodiment are omitted.

  FIG. 1 is a front view of a faucet 100 according to the present embodiment. FIG. 2 is a side view of the faucet 100. As shown in FIG. 2, the faucet 100 mainly includes a faucet body 10, a faucet handle 104, a pipe connection portion 106, a water discharge pipe member 30, a connection portion 50, and a cover member 108. . The pipe connection portion 106 is provided on the upstream side of the faucet body 10 and is connected to the upstream pipe. The water discharge pipe member 30 has a connection portion 50 to which a hose is connected on the downstream side of the faucet body 10. The water supply introduced from the pipe connection part 106 is led out to the connection part 50 through the faucet body 10. The faucet handle 104 is a handle for operating a faucet valve mechanism provided in the faucet body 10 to change the amount of water supplied through the faucet body 10. The cover member 108 is a member that covers the wall hole 46a of the upstream wall 46 of the pipe connection portion 106 (see also FIG. 3).

  FIG. 3 is a side sectional view of the faucet 100. FIG. 3 shows a state in which the pipe connection portion 106 of the faucet 100 is connected to the upstream pipe 48 accommodated in the wall hole 46 a of the wall 46 and the hose 60 is connected to the connection portion 50 by the attachment / detachment mechanism 32. In the following, as shown in FIG. 3, the direction from left to right in FIG. 3 is expressed as the X axis, the height direction is expressed as the Y axis, and the direction from the front side to the back side in FIG. On the Y axis, the positive direction may be expressed as upward and the negative direction as downward. In particular, a straight line along the Y axis passing through the center of the inner periphery of the protruding tube portion 20 passes through the central axis M, a direction along the central axis M is an axial direction, and a plane perpendicular to the central axis M passes through the central axis M. The direction is expressed as a radial direction. These notations do not limit the posture of use of the faucet 100. FIG. 3 shows a cross section cut along a plane passing through the central axis M and perpendicular to the Z axis.

  As shown in FIG. 3, on the upstream side of the faucet 100, the pipe connection portion 106 of the faucet body 10 is connected to an upstream pipe 48 provided on the wall 46, for example. The hose 60 is connected to the downstream side of the faucet 100 via the attachment / detachment mechanism 32 to the connection part 50 provided on the downstream side of the water conduit 18. The faucet 100 supplies water or the like supplied from the upstream pipe to the hose 60. The faucet body 10 of the faucet 100 is provided with a faucet valve mechanism 102 to adjust the amount of water supplied to the hose 60. A faucet handle 104 is connected to the faucet valve mechanism 102. When the faucet handle 104 is viewed from the front, for example, clockwise, the water supply amount is reduced or the water supply is stopped. The faucet valve mechanism 102 increases the amount of water supply when the faucet handle 104 is twisted counterclockwise, for example. The faucet valve mechanism 102 may be operated by a lever instead of a handle. A known configuration can be used for the faucet valve mechanism 102 and the faucet handle 104.

  The faucet body 10 includes a tubular portion 14 that extends in the X-axis direction and incorporates the faucet valve mechanism 102, and a pipe connection portion 106 that is provided on the right side of the tubular portion 14. Further, the tubular portion 14, the protruding tube portion 20 protruding from the side surface of the tubular portion 14, and the pipe connection portion 106 constitute the body portion 12. As for the trunk | drum 12, the tubular part 14, the protruding pipe part 20, and the piping connection part 106 are integrally formed from metal materials, such as brass and bronze. The body 12 may be formed by forging or casting and then processed or polished. The body portion 12 may include a surface layer such as a nickel chrome plating layer. Note that the body 12 may be formed by combining any member. The pipe connection part 106 is a tubular part for passing water through the faucet body. The pipe connection unit 106 will be described later.

(Cover member)
The cover member 108 includes a cover main body 108a, a cover screw portion 108b, and a cover cylindrical portion 108c. The cover main body 108a is a substantially umbrella-shaped portion that covers the connection portion between the upstream pipe 48 and the pipe connection portion 106. The cover screw portion 108b is a female screw formed in a hole provided in the middle of the cover main body 108a, and is provided so as to be screwable with the male screw portion 106a. The cover cylindrical portion 108c is a hollow cylindrical portion provided between the cover screw portion 108b and the cover main body 108a. The cover main body 108a, the cover screw portion 108b, and the cover cylindrical portion 108c are integrally formed by pressing from a sheet metal material such as stainless steel.

(Protruding tube)
The protruding tube portion 20 is a substantially cylindrical portion protruding from the side surface of the tubular portion 14 in the Y direction. The protruding tube portion 20 may protrude in a direction inclined with respect to the Y axis. A protruding edge 22 c is provided on the outer peripheral surface of the protruding tube portion 20. The protruding edge 22c is formed in an annular shape surrounding the central axis M. The protruding edge 22c may be provided continuously in the circumferential direction or may be provided intermittently. A fitting portion 22 d that is recessed in an annular shape so as to surround the central axis M is provided on the upper portion of the protruding tube portion 20. The outer diameter of the fitting portion 22d is formed substantially the same as the outer diameter of the protruding edge 22c. A protruding end 40d of a receiving tube portion 40 to be described later is fitted on the outer periphery of the fitting portion 22d.

(Water discharge pipe member)
The water discharge pipe member 30 includes a housing pipe part 40, a flange part 52, and a connection part 50. In the water discharge pipe member 30, the housing pipe part 40, the flange part 52, and the connection part 50 are integrally formed from a metal material such as brass or bronze. The water discharge pipe member 30 may be formed by forging or casting, and then subjected to processing or polishing. The water discharge pipe member 30 may include a surface layer such as a nickel chrome plating layer. In addition, any member may be formed separately and the spout tube member 30 may be combined.

(Container tube)
The accommodating tube portion 40 has a substantially hollow cylindrical shape surrounding the central axis M, and is provided so as to accommodate the protruding tube portion 20. The accommodating tube portion 40 surrounds the protruding edge 22c and accommodates the protruding tube portion 20. A protruding end 40d that fits into the fitting portion 22d of the protruding tube portion 20 is provided on the upstream edge of the housing tube portion 40 (see also FIG. 5). An opening 44 with which the coupling member 70 engages is provided on the side surface of the housing tube portion 40 (see also FIG. 4A). For example, the opening 44 has a rectangular shape having a width in the Z-axis direction of 20 mm to 24 mm and a height in the Y-axis direction of 1.6 mm to 2.4 mm. The circumferential range of the opening 44 is, for example, in the range of 100 degrees to 180 degrees.

  The flange portion 52 is a disc-shaped portion that protrudes outward in the radial direction from the downstream side surface of the housing tube portion 40. The tip of the attachment / detachment mechanism 32 abuts on the lower surface of the flange portion 52.

  The connecting portion 50 has a hollow cylindrical shape surrounding the central axis M, and is provided on the downstream side of the housing tube portion 40. A hose 60 is connected to the connection portion 50 via the attachment / detachment mechanism 32. A circumferential recess 54 is provided on the outer peripheral surface of the connecting portion 50 (see also FIG. 4A). The recess 54 is formed so that the inner peripheral portion of the attachment / detachment mechanism 32 can be engaged.

  As shown in FIG. 3, the attachment / detachment mechanism 32 includes, as an example, a joint portion 33, a C ring 34, a lever portion 35, a U packing 36, a spring 37, and a plurality of balls 38. The joint portion 33 is a tubular member, has an uneven portion 33a on the outer peripheral surface on the downstream side, and the hose 60 is fitted therein. The inner peripheral surface on the upstream side of the joint portion 33 surrounds the outer peripheral surface of the connection portion 50. The upstream end surface of the joint portion 33 abuts on the flange portion 52. In addition, an annular receiving portion 33b having a step with a large diameter is provided at an intermediate position connecting from the uneven portion 33a to the upstream end surface. An opening communicating with the hose 60 is formed in the central portion surrounded by the receiving portion 33b. A contact portion 5a of a push rod portion 3 described later contacts the receiving portion 33b. The C-ring 34 is provided on the upper side of the lever portion 35 so that the movement of the lever portion 35 can be restricted. The lever portion 35 is a tubular member that surrounds the outer peripheral surface on the upstream side of the joint portion 33 and is provided so as to be movable up and down. The U packing 36 is an annular member made of resin, and is interposed between the outer peripheral surface of the connection portion 50 and the inner peripheral surface on the upstream side of the joint portion 33, and the inner peripheral surface of the joint portion 33 with respect to the outer peripheral surface of the connection portion 50. Is supported substantially coaxially. The spring 37 is a coil spring that is surrounded by the inner periphery of the lever portion 35 and biases the lever portion 35 upward. The plurality of balls 38 are provided between the concave portion 54 of the connection portion 50 and the hole portion of the joint portion 33. The plurality of balls 38 are supported in the holes of the joint portion 33 so as to be movable in the radial direction. By pushing down the lever portion 35 downward, the plurality of balls 38 move to the outer peripheral side and come out of the concave portion 54 of the connection portion 50, whereby the joint portion 33 can be easily removed from the connection portion 50.

(Water pipe section)
Next, the water conduit 18 will be described. FIG. 4A is an enlarged cross-sectional view of the periphery of the water conduit 18. FIG. 5 is an exploded cross-sectional view showing the periphery of the water conduit 18. FIG. 4A shows a state in which the downstream valve member 8 has moved to the closed position with the hose 60 not connected, and the upstream valve member 6 is not in contact with the upstream valve seat 20a. ing. As shown in FIG. 4A, the faucet 100 includes a water conduit 18. The water conduit 18 is a tubular portion that communicates with the faucet body 10 and protrudes from the side surface of the faucet body 10, and a water passage 16 that is a water supply passage is provided therein. The water flow pipe portion 18 is provided between the faucet body 10 and the connection portion 50, and has an emergency valve mechanism therein (see also FIG. 3). The water conduit 18 includes a projecting tube 20 projecting from the faucet body 10, a housing tube 40 surrounding the projecting tube 20, a coupling member 70 that couples the housing tube 40 to the projecting tube 20, including. The water conduit 18 includes a downstream valve member 8 that is a first valve member, an upstream valve member 6 that is a second valve member, a biasing member 28, and O-rings 25, 26, and 27. . An upstream valve seat 20 a is provided at the upstream opening of the protruding pipe part 20 that is the inlet of the water pipe part 18. A downstream valve seat 30 a is provided at the opening of the water discharge pipe member 30 that is the outlet of the water flow pipe section 18. The downstream valve seat 30 a is provided between the accommodation pipe portion 40 and the connection portion 50.

(Upstream valve member)
On the upstream side of the water conduit 18, it can move along the water passage 16 (center axis M) so as to contact the upstream valve seat 20 a of the water passage 16 and close the upstream opening of the protruding pipe 20. An upstream valve member 6 that is a second valve member is provided. The upstream valve member 6 is mainly provided on the inner peripheral portion of the protruding pipe portion 20. The upstream valve member 6 can be formed from a resin material such as polyacetal by a molding process. A valve portion 6a is provided on the upstream surface of the upstream valve member 6, and the valve portion 6a constitutes the check valve mechanism 2 together with the upstream valve seat 20a. When the water pressure in the water passage 16 is higher than the upstream side, the upstream valve member 6 moves to the upstream side (closed position) due to the pressure difference, and the valve portion 6a contacts the upstream valve seat 20a to prevent backflow. (See FIG. 3). Since the water pressure on the upstream side is higher than the water pressure on the water flow path 16 during water flow, the upstream valve member 6 moves downstream (valve opening position), and the valve portion 6a and the upstream valve seat 20a are not in contact with each other. Therefore, the water is passed from the water faucet body 10 on the upstream side to the connecting portion 50 on the downstream side. A first abutting portion 6 e which is an annular groove portion recessed toward the upstream side is formed on the downstream end face of the upstream valve member 6. The first contact portion 6e is a substantially circular groove that can accommodate a part of the urging member 28 in a bottom view. The upstream end 28a of the biasing member 28 contacts the first contact portion 6e. The upstream valve member 6 is provided with a rod-shaped portion 17 having a cylindrical shape extending downstream from the center of the first contact portion 6e. The rod-like portion 17 includes a portion that is accommodated in a receiving hole 11 of the downstream valve member 8 described later so as to be freely advanced and retracted.

(Downstream valve member)
On the downstream side of the water conduit 18, a movement along the water passage 16 (center axis M) makes contact with the downstream valve seat 30 a of the water passage 16 and can close the opening communicating with the connection portion 50. A downstream valve member 8 which is a single valve member is provided. The downstream valve member 8 is provided substantially coaxially with the upstream valve member 6 mainly on the inner peripheral portion of the protruding tube portion 20, the housing tube portion 40, and the connection portion 50. The downstream valve member 8 can be formed by a molding process from a resin material such as polyacetal. FIG. 6 is a perspective view of the downstream valve member 8. The downstream valve member 8 includes a valve body portion 8h, a valve body support portion 8j, and a push rod portion 3. The valve body portion 8h has a substantially cylindrical shape, and a valve portion 8a is provided on the downstream surface thereof. The valve body support portion 8j has, for example, a plurality of (for example, four) protrusions protruding from the outer periphery of the valve body portion 8h, and supports the valve body portion 8h on the downstream surface thereof. The push rod portion 3 is a portion extending downstream from the valve body portion 8h. The valve portion 8a forms a water stop valve mechanism together with the downstream valve seat 30a. When the hose 60 is detached, the downstream valve member 8 moves to the downstream side (closed position) due to the water pressure of the water passage 16 and contacts the downstream valve seat 30a, thereby preventing water leakage when the hose is detached. . The valve body portion 8h, the valve body support portion 8j, and the push rod portion 3 are integrally provided. A second contact portion 8 e that is an annular groove portion that is recessed toward the downstream side is formed on the upstream end surface of the downstream valve member 8. The second contact portion 8e has a substantially circular groove shape that can accommodate a part of the biasing member 28 in a top view. The downstream end 28b of the urging member 28 contacts the second contact portion 8e.

(Push bar part)
Next, the push rod portion 3 will be described. 7 is a cross-sectional view of the downstream valve member 8 taken along line AA, and FIG. 8 is a cross-sectional view of the downstream valve member 8 taken along line BB. The push rod portion 3 is a portion extending to the downstream side of the valve body portion 8h, and its downstream end portion protrudes from the connection portion 50 and is pushed into the connection portion 50 by the joint portion 33 when the hose 60 is attached. When the push rod portion 3 is pushed upstream, the valve portion 8a and the O-ring 26 and the downstream valve seat 30a are opened (see FIG. 3). As shown in FIG. 6, the push rod portion 3 includes a cylindrical portion 5, a plurality of (for example, four) plate-like portions 7, and a pillar portion 9.

  The column portion 9 is a cylindrical portion extending downstream from the valve body portion 8h, and an accommodation hole 11 capable of accommodating at least a part of the rod-like portion 17 is provided inside. The plurality of plate-like portions 7 extend from the valve body portion 8h to the downstream side, and the inner peripheral side thereof is a substantially blade-like portion fixed to the column portion 9, and the plurality of plate-like portions 7 are substantially equal in the circumferential direction, respectively. Arranged at intervals. Each of the plurality of plate-like portions 7 extends radially outward from the column portion 9. The plurality of plate-like portions 7 may extend outward from the column portion 9 without extending downstream from the valve body portion 8h. The plurality of plate-like portions 7 are formed so as to divide the flow path and rectify the water flow flowing therebetween. Since there are no walls that block between the plate-like portions 7 on the outer peripheral side of the plurality of plate-like portions 7, water entering from the outside can widely pass between the plate-like portions 7. The number of the plurality of plate-like portions 7 is two or more. When the number of the plurality of plate-like portions 7 is 3 or more, the strength of the push rod portion 3 is improved as compared with the case where the number is not so. When the number of the plurality of plate-like portions 7 is 4 or less, the mold structure in the case of producing by molding is simplified, which is advantageous from the viewpoint of productivity.

  The cylindrical portion 5 is a portion having a hollow cylindrical shape that is fixed to the downstream side of the plurality of plate-like portions 7 and surrounds the central axis M, and a contact portion 5a is provided at the downstream end thereof. The contact portion 5 a is a portion that comes into contact with the receiving portion 33 b of the joint portion 33 and is pushed up. The cylindrical portion 5 is positioned substantially coaxially with the receiving portion 33b so that the contact portion 5a does not block the central portion of the receiving portion 33b of the joint portion 33 (the central portion of the opening provided at the center of the receiving portion 33b). It is provided to touch. By forming in this way, the water flow mainly passes through the inside of the cylindrical portion 5 and is not easily affected by the turbulent flow.

  FIG. 9 is a side view of the downstream valve member 8. As shown in FIG. 9, notches 7 a are formed on the downstream sides of the plurality of plate-like portions 7. By having the notch portion 7 a, the water flow that has flowed along the plate-like portion 7 flows from the notch portion 7 a to the inner peripheral side, and can be guided mainly to pass through the inside of the cylindrical portion 5. . Moreover, the effect which the resistance of a flow path is relieved by having the notch part 7a is also considered. Although there is no special restriction | limiting in the shape of the notch part 7a, The notch part 7a of embodiment has the taper shape to which the width | variety of radial direction is expanded toward the downstream. That is, as shown in FIG. 8, the notch 7a has a substantially triangular shape or a substantially trapezoidal shape in a side view. By having such a shape, the disturbance of the water flow is less likely to occur than in the case of having an angular shape.

  As shown in FIG. 9, the push rod portion 3 includes three regions depending on the positions in the axial direction (direction along the central axis M) depending on the cross-sectional shapes of the plate-like portion 7 and the column portion 9. The first region 3a is an upstream region, and as shown in the cross section A of FIG. 9, the plate-like portion 7 extends radially from the first portion 9a of the column portion 9, and the first portion 9a has a central portion. An accommodation hole 11 is formed in the inner wall. The second region 3b is a region continuously provided on the downstream side of the first region 3a, and the plate-like portion 7 extends radially from the second portion 9b of the column portion 9 as shown in the cross section B of FIG. However, the accommodation hole 11 is not formed in the second portion 9b. The second portion 9b is formed with a smaller diameter than the first portion 9a. The third region 3c is a region continuously provided on the downstream side of the second region 3b. As shown in the cross section C of FIG. 9, the column portion 9 is not formed, and the push rod portion 3 has a plate at the center. A central space is formed by the notch portion 7a of the shape portion 7. The flow path has an inner portion wider than the first region 3a in the second region 3b and a central portion further widened in the third region 3c, so that the water flow flowing along the push rod portion 3 flows from the first region 3a to the third region. 3c is gradually gathered so as to be collected in the center, and is guided to pass near the center of the cylindrical portion 5. By comprising in this way, the ratio of the water flow which passes the outer peripheral side of the cylindrical part 5 can be reduced.

  The push rod portion 3 configured as described above may be formed N-fold symmetrically (N is an integer of 2 or more) about the central axis of the column portion 9. The push rod portion 3 may be formed with, for example, three-fold symmetry or four-fold symmetry with the central axis of the column portion 9 as an axis. As shown in FIG. 9, the push bar portion 3 of the embodiment is formed four times symmetrical, and is also line symmetric or point symmetric. In the embodiment, the central axis of the column portion 9 coincides with the central axis M.

(Biasing member)
As shown in FIG. 4A, the biasing member 28 is a coil spring that generates a biasing force between the upstream end 28a and the downstream end 28b. In particular, the urging member 28 is a coil spring that expands and contracts in the direction in which the water passage 16 extends. The upstream end 28 a faces the end face of the upstream valve member 6, and the downstream end 28 b faces the end face of the downstream valve member 8. The urging member 28 is pushed back to the upstream side when the upstream valve member 6 tries to move excessively to the downstream side, and pushed back to the downstream side when the downstream valve member 8 tries to move excessively to the upstream side. Act on. That is, the urging member 28 holds the upstream valve member 6 and the downstream valve member 8 at appropriate positions.

  If the check valve mechanism 2 is closed when the hose 60 is disconnected, the upstream valve member 6 does not close because excessive water pressure is generated in the water passage 16 and a strong force is required when the hose is inserted again. Is preferred. Therefore, in the faucet 100 according to the present embodiment, as shown in FIG. 4A, the upstream valve member 6 is not in the closed position with the downstream valve member 8 moved to the closed position (valve open position). It is in). This is because the distance Lv between the first contact portion 6e and the second contact portion 8e when the upstream valve member 6 and the downstream valve member 8 both move to the closed position is the natural length of the biasing member 28. This is because the dimension is set to be larger than Ls, and there is a gap between the valve portion 6a of the upstream valve member 6 and the upstream valve seat 20a in a state where the downstream valve member 8 has moved to the closed position. It becomes non-contact. FIG. 4B shows a state where both the upstream valve member 6 and the downstream valve member 8 have moved to the closed position.

(O-ring)
O-rings 25, 26, and 27 are provided for surely stopping water. As the O-rings 25, 26, and 27, for example, rubber rings can be used as well-known O-rings. The O-ring 25 is fitted in a circumferential groove formed on the outer peripheral surface of the protruding tube portion 20 and fills the gap with the accommodating tube portion 40. The O-ring 26 is fitted into a circumferential groove 8k formed in the valve portion 8a of the downstream valve member 8, and fills the gap with the downstream valve seat 30a. The O-ring 27 is fitted in a circumferential groove formed in the valve portion 6a of the upstream valve member 6, and fills the gap with the upstream valve seat 20a.

(Coupling member)
Next, the coupling member 70 will be described. The coupling member 70 engages with the protruding tube portion 20 and the accommodating tube portion 40, and couples the accommodating tube portion 40 to the protruding tube portion 20. As shown in FIG. 4A, the coupling member 70 is a substantially C-ring shaped member with a part cut off on the circumference, and is formed by pressing from a metal plate such as stainless steel. The coupling member 70 includes two interposed portions 72 interposed between the outer peripheral surface of the small-diameter tube portion 24 c of the protruding tube portion 20 and the inner peripheral surface 40 b of the storage tube portion 40. The two interposition parts 72 are in contact with each other so as to sandwich the small-diameter pipe part 24 c of the protruding pipe part 20, and engage with the protruding pipe part 20. By inserting the coupling member 70 into the opening 44 of the accommodation tube portion 40 in a state where the projection tube portion 20 is accommodated, the accommodation tube portion 40 is coupled to the projection tube portion 20.

(Manufacturing process of water pipe section)
Next, an example of a process for manufacturing the water conduit 18 will be described with reference to FIG. First, predetermined members such as the downstream valve member 8, the urging member 28, the upstream valve member 6, and the O-rings 25, 26, and 27 are mounted on the inner peripheral portion of the accommodation pipe portion 40. Next, the protruding tube portion 20 is inserted into the housing tube portion 40. In this state, the position of the accommodating tube portion 40 is adjusted so that the small diameter tube portion 24 c can be seen from the opening 44. In this state, the coupling member 70 is inserted from the opening 44 and pushed into a position where the interposition part 72 surrounds the small diameter pipe part 24c. After the coupling member 70 is pushed in, a predetermined incidental operation such as an inspection may be performed as necessary. These steps are merely examples, and the order may be changed as necessary, another step may be added, and some steps may be omitted.

Next, features of the faucet 100 according to the present embodiment will be described.
In the faucet 100 of the embodiment, the push rod portion 3 includes a column portion 9 extending downstream from the valve body portion 8h, and a plurality of inner rods fixed to the column portion 9 and arranged at intervals in the circumferential direction. The plate-like portion 7 and the cylindrical portion 5 fixed to the downstream side of the plurality of plate-like portions 7 are included. According to this configuration, the contact portion 5a of the cylindrical portion 5 does not block the central portion of the receiving portion 33b of the joint portion 33, and the water flow mainly passes through the inside of the cylindrical portion 5 and is less susceptible to turbulence. , Vibration and noise can be made difficult to occur.

  In the faucet 100 of the embodiment, the push rod portion 3 has a shape that is N-fold symmetric (an integer equal to or greater than N = 2) about the central axis of the column portion 9. According to this structure, since the balance of the circumferential direction of the push rod part 3 becomes good, the shift | offset | difference of the push rod part 3 by the bias | inclination of a water flow can be suppressed.

  In the faucet 100 of the embodiment, a notch 7 a is formed on each downstream side of the plurality of plate-like portions 7. According to this configuration, the water flow that has flowed along the plate-like portion 7 can be guided from the cutout portion 7 a to the inner peripheral side, and can be guided mainly through the inside of the cylindrical portion 5.

  In the faucet 100 of the embodiment, the cutout portion 7a has a shape in which the radial width increases toward the downstream side. According to this configuration, it is possible to guide the water flow flowing along the plate-like portion 7 so as to pass through the center side more smoothly.

  The faucet 100 according to the embodiment includes an upstream valve member 6 capable of closing the upstream side of the water passage 16 by moving along the water passage 16, and the upstream valve member 6 extends in a rod shape extending toward the downstream side. The column portion 9 is provided with an accommodation hole 11 that can accommodate at least a part of the rod-like portion 17. According to this structure, since the rod-shaped part 17 is accommodated in the accommodation hole 11, the center position of the upstream valve member 6 and the downstream valve member 8 can be aligned, and these inclinations can be suppressed.

  The faucet 100 of the embodiment includes a biasing member 28 provided between the upstream valve member 6 and the downstream valve member 8, and the upstream valve member 6 and the downstream valve member 8 face each other. The first contact portion 6e and the second contact portion 8e, which are annular grooves that can accommodate the end portion of the biasing member 28, are provided on the surface. According to this configuration, since both end portions of the urging member 28 are respectively fitted to the first contact portion 6e and the second contact portion 8e, the urging member 28 is supported substantially coaxially with the central axis M, The possibility that the urging member 28 is attached with an inclination can be reduced.

  In the above, it demonstrated based on embodiment of this invention. It is to be understood by those skilled in the art that these embodiments are illustrative, and that various modifications and changes are possible within the scope of the claims of the present invention, and that such modifications and changes are also within the scope of the claims of the present invention. It is understood. Accordingly, the description and drawings herein are to be regarded as illustrative rather than restrictive.

  In the drawings used for the description, in order to clarify the relationship between members, the cross sections of some members are hatched. However, the hatching does not limit the materials and materials of these members.

  100 water tap, 2 check valve mechanism, 3 push rod part, 4 water stop valve mechanism, 5 cylindrical part, 6 upstream valve member, 7 plate-like part, 8 downstream valve member, 8e second contact part, 9 pillar Part, 10 faucet body, 11 accommodating hole, 12 trunk part, 14 tubular part, 16 water passage, 17 rod-like part, 18 water pipe part, 20 projecting pipe part, 28 biasing member, 30 water discharge pipe member, 32 attachment / detachment mechanism 33 joint parts, 40 accommodating pipe parts, 50 connection parts, 60 hoses.

Claims (6)

A water pipe section communicating with the faucet body and provided with a water passage inside;
A first valve member that moves along the water passage,
The first valve member includes a valve body portion, and a push rod portion that extends downstream from the valve body portion and pushes the valve body portion upstream by being pushed upstream.
The push bar part is
A pillar portion extending downstream from the valve body portion;
A plurality of plate-like parts, the inner peripheral side of which is fixed to the pillar part, and arranged at intervals in the circumferential direction;
A cylindrical portion fixed to the downstream side of the plurality of plate-like portions;
A faucet characterized by containing.   The faucet according to claim 1, wherein the push rod portion has a shape that is N-fold symmetric (an integer equal to or greater than N = 2) about the central axis of the column portion.   The faucet according to claim 1 or 2, wherein a notch is formed on each downstream side of the plurality of plate-like portions. When the direction away from the central axis on a plane perpendicular to the central axis of the pillar portion is referred to as a radial direction,
The faucet according to claim 3, wherein the notch has a shape in which the width in the radial direction increases toward the downstream side. A second valve member provided on the upstream side of the first valve member and moving along the water passage;
The second valve member includes a rod-shaped portion extending toward the downstream side,
The faucet according to any one of claims 1 to 4, wherein an accommodation hole capable of accommodating at least a part of the rod-shaped portion is provided in the column portion. An urging member provided between the second valve member and the first valve member;
6. The water according to claim 5, wherein each of the surfaces of the second valve member and the first valve member facing each other is provided with an annular groove that can accommodate the end of the biasing member. plug.

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