JP2005265140A - Branch port attachment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a branch port attachment enabling branch outflow of water or hot water from a branch port, wherein straight holes without a difference in level are sufficient for flow through holes on water and hot water sides, eliminating a need of thread cutting for a plug and lateral holes, allowing the plug to be easily attached/detached without a dedicated tool, and usable even for a slim-shaped branch tap main body by forming the lateral holes in the flow through holes on the water and hot water sides, respectively, and closing one of the lateral holes with an axial plug having non-screw structure. <P>SOLUTION: In the branch port attachment 10 in which water, hot water, and hot water/water flow through holes 26, 27, 28 are independently and penetratingly formed in an axial direction in the branch tap main body 12 internally provided in an outer cylinder 11, the lateral holes 33, 34 are respectively formed in the flow through holes 26, 27 on the water and hot water side, and one of the lateral holes 33, 34 is closed with the axial plug 50 having the non-screw structure. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a branch port attachment that is additionally set to an existing single lever type hot / cold water mixing tap to branch and supply water and hot water, or branch and supply tap water to a water purifier.

  In general, conventional single-lever hot and cold water mixing taps that do not have branch port attachments are equipped with a mixing plug body on a wash basin, sink, etc. A lever is provided, and a hot water passage communicating with a boiler and the like and a tap water passage communicating with a water pipe are formed inside the mixing plug main body, and when the operation part at the top of the cartridge is operated with the operation lever, The hot water is used as it is, or the tap water is used as it is, or a temperature control fluid obtained by mixing hot water and tap water is supplied from a spout that is rotatably arranged at the rising portion of the mixing plug body.

  By the way, in recent years, in addition to the water, hot water, and mixed fluid from the above-mentioned spout, it is required to branch and supply hot water or water to a dishwasher or a water treatment device (water purifier, alkaline ion water device).

  Therefore, the present applicant has already invented a branch port attachment that can be additionally set to an existing single lever type hot and cold water mixing tap to supply hot water to a dishwasher or to supply tap water to a water purifier. (See Patent Document 1).

This branch port attachment is interposed between the rising portion of the mixing plug main body and the cartridge, and is configured as shown in FIG.
That is, the branch port attachment 100 includes an outer cylinder 101 (so-called hub) and a branch plug main body 102 provided in the outer cylinder 101, and an existing water faucet (not shown) is provided on the outer periphery of the upper part of the outer cylinder 101. While a screw portion 103 for attaching a cover nut is provided, a branch port 104 is formed in an intermediate portion in the vertical direction of the outer cylinder 101, and a joint 106 is attached to the branch port 104 via a screw member 105.

  The tap body 102 has a tap water inlet 107, a hot water inlet (not shown), and a hot water outlet 108 formed independently in the axial direction K. An annular groove 109 is formed in the outer peripheral portion corresponding to 104.

  Further, at the site where the ring groove 109 is formed, the tap water inflow hole 107 and the hot water inflow hole (not shown) and a lateral hole 110 for connecting the annular groove 109 in the lateral direction (however, in FIG. When the hot water is branched and discharged, a sleeve 111 is inserted into the tap water inflow hole 107 as shown in FIG. 11, and the lateral hole 110 communicating with the tap water inflow hole 107 by this sleeve 111 is inserted. In the case where the hot water from the hot water inflow hole is configured to branch out from the branch port 104 through the annular groove 109 from the lateral hole (not shown), and the tap water is branched out, the sleeve 111 described above is used. Is removed from the tap water inflow hole 107, the sleeve 111 is inserted into a hot water inflow hole (not shown), and the lateral hole communicating with the hot water inflow hole is closed by the sleeve 111. From Tap water through the ring groove 109 from the lateral hole 110, and configured to branch flows out from the branch port 104.

  Here, the upper and lower ends of the above-mentioned sleeve 111 are formed with a small diameter with respect to the intermediate portion, and O-rings 112 and 113 are interposed between the small-diameter portion and the inflow hole 107 for the purpose of ensuring a sealing property. On the other hand, a seat bush 116 having an O-ring 114 and a packing 115 is provided on the inner periphery of the lower part of the tap water inlet 107 and the hot water inlet (not shown). Regardless of this, the fluid passage areas on the inflow side (the lower side in the figure) of the tap water inflow hole 107 and the hot water inflow hole (not shown) are configured to be the same.

  In FIG. 11, a mounting nut 118 is rotatably provided on the outer periphery of the lower portion of the outer cylinder 101 via a mounting ring 117, and this mounting nut 118 is connected to the rising portion of the mixing plug main body.

  The conventional branch port attachment 100 shown in FIG. 11 has an advantage that hot water or tap water can be easily branched and discharged from the branch port 110 by a simple insertion / removal operation of the seat bush 116 and the sleeve 111, but it is complicated. Two types of separate members, the seat bush 116 having a shape and the sleeve 111 having a multi-stage cylindrical shaft structure, are indispensable, and the tap water inflow hole 107 and the hot water inflow hole have a stepped shape as shown in FIG. In addition, when the sleeve structure shown in FIG. 11 is adopted for the smart one-lever hot-water / water-mixing faucet with a small diameter of the branch plug main body 102, the passage cross-sectional area of water or hot water depends on the thickness of the sleeve 111. Since it becomes narrow, it is not possible to secure a sufficient water passage, and therefore it is not possible to apply it to smart type mixed faucets. That problem there was.

On the other hand, the above-mentioned Patent Document 1 discloses a structure in which the above-described lateral hole 110 is set as a screw hole, and a screw-type plug is fixed by screwing to the screw hole. Since both the hole 110 and the plug require a threading process and man-hours separately, which increases the cost, there is a problem that the practicality is inferior.
JP-A-10-231940

  According to the present invention, a horizontal hole is formed in each of the water-side and hot water-side circulation holes, and these side holes are configured to be selectively closed with a non-screw-structured shaft-shaped plug, whereby water or Of course, hot water can branch and flow out, and the water and hot water flow holes can be straight holes with no steps, and the plugs and side holes do not require threading. The purpose is to provide a branch opening attachment that can be attached and detached and is also effective for a slim-shaped branch plug body.

  A branch port attachment according to the present invention is a branch port attachment in which water, hot water, and hot water flow holes are independently penetratingly formed in an axial direction in a branch plug body provided in an outer cylinder. The through holes are respectively formed with lateral holes, and these lateral holes are configured to be selectively closed with a non-threaded shaft-like plug.

  According to the above configuration, when the lateral hole communicating with the water-side circulation hole is closed with a plug, the hot water can be branched and discharged from the branch port through the hot-water circulation hole and the lateral hole on the same side. When the side hole communicating with the side circulation hole is closed with a plug, water can be branched out from the branch port through the water side circulation hole and the same side hole.

  In this way, water or hot water can branch out of the branch port, and of course, the lateral hole is closed with a plug, so the water and hot water flow holes may be straight holes without steps, The plug and the side hole do not require threading, and the plug can be easily attached and detached without using a dedicated tool. Furthermore, since the water-side and hot water-side circulation holes are not narrowed by the sleeve, a sufficient water passage can be secured even when applied to a slim-shaped branch plug body having a compact outer diameter.

In an embodiment of the present invention, the plug outer end is brought close to or in contact with the inner peripheral surface of the outer cylinder.
According to the above configuration, it is possible to reliably prevent the plug from coming out due to the pressure (internal pressure) of water or hot water.
In one embodiment of the present invention, the outer cylinder is provided with a branching portion for branching or flowing water or hot water from a lateral hole selected by non-attachment of the plug, and the axial core wire of the plug is used as the axial core wire of the branching portion. This is offset.

  According to the above configuration, due to the above-described offset structure, the influence of the pressure of water or hot water (internal pressure) acting on the plug is further reduced, and the plug can be further prevented from moving in the pull-out direction.

In one embodiment of the present invention, a seal member is interposed between the inner periphery of the lateral hole and the outer periphery of the plug.
The sealing member described above may be set to an O-ring, and the sealing member may be provided only on one of the inner periphery of the lateral hole and the outer periphery of the plug.
According to the said structure, the sealing performance between both a horizontal hole and a plug is securable with a sealing member.

  According to the present invention, the horizontal holes are formed in the water-side and hot water-side flow holes, respectively, and these horizontal holes are selectively closed by the non-screw-structured shaft-like plugs. In addition, the hot and cold water flow holes can be straight holes with no steps, and the plugs and side holes do not require threading. In addition to being able to be attached and detached, there is an effect that is effective also for a slim-shaped branch plug body.

  Water or hot water can be branched out of the branch port, and the water and hot water distribution holes can be straight holes without steps, and the plugs and side holes do not require threading, and the plugs are dedicated. For the purpose of being easy to attach and detach without tools, and also effective for slim-shaped branch plug bodies, horizontal holes are formed in the water and hot water flow holes, respectively. This was realized by a structure in which the shaft-shaped plug of the structure selectively closed.

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawing shows a branch port attachment, and this branch port attachment 10 shown by a solid line in FIG. 1 is interposed between the rising portion 1a of the mixing plug main body 1 shown by a virtual line and the cartridge 2 in the same figure. . The above-described cartridge 2 has an operating portion 3 at the top thereof, and the cartridge 2 is fastened and fixed to the top of the branch port attachment 10 by a cover nut 4.

  Further, the operating portion 3 at the top of the cartridge 2 is configured to be operated by an operating lever 5 (so-called lever handle), while the base portion 6a of the spout 6 is rotatable on the outer periphery of the rising portion 1a of the mixing plug main body 1. It is attached to.

  Here, the mixing plug main body 1 described above has a tap water passage communicating with a water pipe and a hot water passage communicating with a boiler or the like, and the water or hot water is connected to a branch port attachment 10 (as indicated by an arrow a in FIG. For details, refer to the tap water inflow hole 26 or the hot water inflow hole 27 described later), and when the operation unit 3 at the upper part of the cartridge 2 is operated by the operation lever 5, the tap water is left as it is or hot water is left as it is. Alternatively, the temperature-controlled fluid obtained by mixing tap water and hot water is allowed to flow down into the rising portion 1a of the mixing plug body 1 as an effluent liquid (mixed fluid) as shown by an arrow b in FIG. As shown, it can be supplied from the spout 6.

  2 is a plan view of the branch port attachment 10, FIG. 3 is a cross-sectional view of the main part along the line AA in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line BB in FIG. The attachment 10 is rotatably attached to the outer cylinder 11 (so-called hub), a branch plug main body 12 provided in the outer cylinder 11, and a branch port 19 (see FIG. 5) described later via a screw member 13. A cap nut structure joint 14 and a mounting nut 15 for fixing the branch port attachment 10 to the rising portion 1a of the mixing plug main body 1 shown in FIG.

  FIG. 5 is an exploded view of the branch port attachment 10. The outer cylinder 11 described above includes an upper thin portion 16, an intermediate portion and a thick portion 17, and a screw portion 18 is formed on the outer periphery of the thin portion 16. The cover nut 4 shown in FIG. 1 is attached to the screw portion 18.

  In addition, a branch port 19 and a screw hole 20 are formed in a part of the thick wall portion 17, while a ring groove 21 is formed in the lower outer periphery of the outer cylinder 11, and as shown in FIG. The mounting nut 15 is rotatably mounted via the mounting ring 22.

Further, the inner diameter of the thin portion 16 is set to be smaller than the other portion, and a step portion 25 is formed between the small diameter portion 23 on the inner periphery of the thin portion 16 and the large diameter portion 24 on the inner periphery of the other portion.
The branch plug body 12 is configured as shown in FIGS. That is, the branch plug body 12 includes a tap water inlet hole 26 as a water-side circulation hole, a hot water inlet hole 27 as a hot water-side circulation hole, and a hot water outlet hole 28. It penetrates independently along the direction.

  The outer peripheral portion of the branch plug main body 12 has an upper small-diameter portion 29 and a lower large-diameter portion 30 so as to correspond to the inner peripheral portion of the outer cylinder 11, and a step portion 31 is provided between them. Is formed. By the step portion 31 and the step portion 25 of the outer cylinder 11, when the branch plug main body 12 is inserted into the outer cylinder 11 from below the outer cylinder 11, the branch plug main body 12 can be positioned at a fixed position.

  Further, a ring groove 32 is formed in the middle of the outer periphery of the large-diameter portion 30, and a communication hole extending in the lateral direction so as to communicate with the ring groove 32, the tap water inflow hole 26 and the hot water inlet 27 individually. The horizontal holes 33 and 34 are respectively formed.

  Further, as shown in FIG. 5, O-ring grooves 35 and 36 are formed in both the upper and lower portions of the outer periphery of the large-diameter portion 30, and these O-ring grooves 35 and 36 are shown in FIGS. In this way, O-rings 37 and 38 as sealing members are fitted.

  FIG. 6 is a bottom view of the branch plug main body 12. The bottom of the branch plug main body 12 has a three-wheel shape along the edges of the tap water inflow hole 26, hot water inflow hole 27, and hot water outflow hole 28. An O-ring groove 39 is recessed, and an O-ring 40 as a correspondingly shaped sealing member is fitted in the O-ring groove 39.

  As described above, since the bottom of the branch plug main body 12 is sealed between the bottom surface of the branch plug main body 12 and the upper surface of the rising portion 1a of the mixing plug main body 1, the sealing structure between the both 12 and 1a is simplified. Can be achieved. That is, the arrangement structure of the packing 115 shown in FIG. 11 and the step groove formation for packing arrangement can be omitted.

  As shown in FIGS. 2 and 4, pin holes 41 and 41 for positioning the cartridge 2 are formed in the upper portion of the above-described branch plug body 12, and these pin holes 41 and 41 are arranged in the vertical direction. Correspondingly, knock pins 42 and 42 (positioning pins) are integrally or integrally projected at the lower part of the branch plug body 12 as shown in FIGS. 4 and 6, and the branch plug body 12 is mixed by these knock pins 42 and 42. The stopper body 1 is configured to be positioned on the rising portion 1a.

  As shown in FIG. 5, the screw member 13 is a cylindrical member having a screw portion 43 on the outer periphery of the tip portion and a serration portion 44 on the inner diameter side, and the screw portion 43 is a screw of the outer tube 11. It is attached to the hole 20.

An annular flange 45 that holds the joint 14 rotatably is integrally formed on the rear end side of the screw member 13 described above.
The above-described joint 14 is formed in a cap nut shape having a holding hole 46 held by the flange 45 on the inner diameter side and a screw hole 47.

  Then, in a state in which the edge of the holding hole 46 of the joint 14 is held by the flange portion 45 of the screw member 13, the screw portion 43 of the screw member 13 is attached to the outer cylinder using the serration portion 44 of the screw member 13. As shown in FIG. 4, the joint 14 can be rotatably attached to the outer cylinder 11 via the screw member 13.

  The mounting nut 15 is formed with a concave ring groove 48 in which the mounting ring 22 shown in FIG. 4 is arranged, and a screw hole 49 for tightening and fixing to a corresponding portion in the rising portion 1a of the mixing plug main body 1 on its inner peripheral side. A cap nut structure is formed.

  By the way, as shown in FIGS. 3 and 5, there is provided a shaft-like plug 50 having a non-screw structure that selectively closes the water side lateral hole 33 and the hot water side lateral hole 34 of the branch plug body 12. Yes.

  The plug 50 includes a shaft portion 51 and a head portion 52, and an O-ring groove 53 is formed on the outer periphery of the shaft portion 51. The O-ring groove 53 has a space between the plug 50 and the lateral hole 33 or 34. An O-ring 54 as a seal member for sealing is attached. In the outer end portions on the side of the lateral holes 33 and 34 to which the plug 50 is attached, annular stepped portions 55 and 56 are inserted so that only a part of the head portion 52 of the plug 50 is inserted and further insertion is prevented. ing.

  When the elements shown in the exploded view in FIG. 5 are assembled, the branch port attachment 10 shown in FIG. 4 is configured, and this attachment 10 is modularized as one unit. This branch port attachment 10 is already shown in FIG. As described above, it is interposed between the rising portion 1 a of the mixing plug main body 1 and the cartridge 2.

  In this case, when the side hole 33 on the water side of the branch plug body 12 is closed and assembled with the plug 50 so as to branch out hot water, it becomes as shown in FIG. 7, and the hot water of the branch plug body 12 is branched into the tap water. When the side hole 34 on the side is closed with the plug 50 and assembled, the result is shown in FIG. Note that the direction of the branch port can be freely changed during assembly.

  7 shows an enlarged view of the main part, and the outer end of the head 52 of the plug 50 is shown in a state where the elements 11, 12, 13, 14, 15, and 50 are assembled under use. Is close to or in contact with the inner peripheral surface of the outer cylinder 11. In the embodiment shown in FIG. 9, a minute clearance L is formed between the outer end of the head 52 of the plug 50 and the inner peripheral surface of the outer cylinder 11 in consideration of the assembling property of the outer cylinder 11.

  Moreover, the axial core line α of the plug 50 is offset in the axial direction of the branch plug main body 12 with respect to the axial core line β of the branch port 19 even when the plug 50 is attached to any of the lateral holes 33 and 34. It is configured.

  As shown in FIG. 7, when the horizontal hole 33 on the water side is closed with a single plug 50, the hot water H is supplied with the hot water inflow hole 27, the horizontal hole 34, the ring groove 32, as shown by the arrows in FIG. When the tap water flows into the tap water inflow hole 26 while being branched and discharged through the branch port 19, the plug 50 moves in the horizontal direction until the minute clearance L becomes zero due to the water pressure. Since it is blocked by the inner wall of the outer cylinder 11, tap water will not leak from the lateral hole 33.

  As shown in FIG. 8, when the hot water side lateral hole 34 is closed with a single plug 50, the tap water W is supplied with the tap water inflow hole 26, the lateral hole 33, the ring groove as shown by the arrows in FIG. 32, when the hot water flows into the hot water inflow hole 27 while the hot water flows into the hot water inflow hole 27, the plug 50 moves laterally until the minute clearance L becomes zero due to the water pressure. Since it is blocked by the inner wall of the outer cylinder 11, hot water does not leak from the lateral hole 34.

  Even if the plug 50 moves laterally until the above-described minute clearance L becomes zero, the O-ring 54 fitted to the shaft portion 51 of the plug 50 causes the plug 50 and the lateral hole 33 or 34 to be connected. Since the gap is securely sealed, a sufficient sealing performance can be ensured.

  Further, the tip end of the plug 50 is formed in a convex spherical shape, and the tip end of the plug 50 and the peripheral surfaces of the inflow holes 26 and 27 are both before and after the movement in the lateral direction by water pressure. Since it is substantially flush, it does not disturb the flow of tap water W or hot water H (through water).

FIG. 10 shows another embodiment of the plug structure. In this embodiment, when the plug 50 is inserted into the lateral hole 33 or 34, the tip of the plug 50 and the inner peripheral surfaces of the inflow holes 26 and 27 are flush with each other. Further, the tip of the plug 50 is formed into a concave curved surface, and a chamfered portion 51 a is formed at the tip of the shaft portion 51 in consideration of the mountability of the shaft portion 51 of the plug 50.
In this way, when the tip of the plug 50 is formed into a curved surface that is flush with the inner peripheral surfaces of the inflow holes 26 and 27, the insertion direction of the plug 50 is specified, so both the plug 50 and the branch plug main body 12 have It is desirable to attach a mark.

  Further, in this embodiment, the step portions 55 and 56 at the outer end portions of the lateral holes 33 and 34 are omitted, and the head portion 52 of the plug 50 is configured to be received by the outer end portions of the hole edges of the lateral holes 33 and 34. Yes.

  Furthermore, when the branch plug body 12 with the plug 50 assembled is assembled into the outer cylinder 11, the outer end of the head 52 of the plug 50 comes into contact with the inner peripheral surface of the outer cylinder 11 so that the minute clearance L becomes zero. Is formed.

  If comprised in this way, the movement to the horizontal direction of the plug 50 by water pressure can be prevented completely. In FIG. 10, the same parts as those in the previous figure are denoted by the same reference numerals, and detailed description thereof is omitted. However, the outer cylinder 11 and the branch plug body 12 are made of brass, bronze, SUS (stainless steel), or the like. Alternatively, the mounting ring 22 may be made of SUS (stainless steel).

  As described above, the branch port attachment 10 of the above embodiment has the water, hot water and hot water flow holes (tap water inflow hole 26, hot water inflow hole 27, hot water outflow hole 28) in the branch plug main body 12 provided in the outer cylinder 11. (Refer to FIG. 3) is a branch port attachment that is formed so as to penetrate in the axial direction independently. In the inflow holes 26 and 27 on the water side and the hot water side, lateral holes 33 and 34 are formed as communication holes, respectively. , 34 are configured to be alternatively closed with a non-screw-structured shaft-like and single plug 50.

  According to this configuration, when the lateral hole 33 communicating with the water-side inflow hole 26 is closed with the plug 50 (see FIG. 7), the hot water-side inflow hole 27 and the same-side lateral hole 34 are connected to the branch port 19. When hot water can branch out and flow out, and the lateral hole 34 communicating with the hot water side inflow hole 27 is closed with a plug 50 (see FIG. 8), the water side inflow hole 26 and the lateral side hole 33 are connected. Water can be branched out of the branch port 19.

  In this way, water or hot water can branch out from the branch port 19, and of course, the lateral hole 33 or 34 is alternatively closed by a single plug 50, so The inflow holes 26 and 27 may be straight holes without a step, and the plug 50 and the lateral holes 33 and 34 need not be threaded, and the operator can operate the plug 50 without using any special tool. Can be easily attached and detached. Further, since the water-side and hot-water inflow holes 26 and 27 are not narrowed by the sleeve (refer to the conventional sleeve 111 shown in FIG. 11), it is applied to the slim-shaped branch plug body 12 having a compact outer diameter. Even so, a sufficient water channel can be secured.

  Further, the outer end of the plug 50 is brought close to (see FIG. 9) or in contact (see FIG. 10) with the inner peripheral surface of the outer cylinder 11.

According to this configuration, the plug 50 can be reliably prevented from coming out due to the pressure (internal pressure) of water or hot water.
Further, the outer cylinder 11 is provided with a branch portion (see the branch port 19) for branching and flowing out water or hot water from the lateral hole 33 or 34 selected when the plug 50 is not attached, and the shaft core α of the plug 50 is It is offset with respect to the axial center line β of the branch part (see the branch port 19).

  According to this configuration, due to the above-described offset structure, the influence of the pressure (internal pressure) of water or hot water acting on the plug 50 is further reduced, and the movement of the plug 50 in the pull-out direction can be further prevented. .

In addition, a seal member (see O-ring 54) is interposed between the inner periphery of the lateral holes 33 and 34 and the outer periphery of the plug 50.
In this embodiment, the above-mentioned sealing member is set to the O-ring 54, and the O-ring 54 is sub-assembled on the outer peripheral portion of the plug 50 so that the O-ring 54 and the plug 50 are integrated.

  According to this configuration, the sealing member (see the O-ring 54) can ensure good sealing performance between the lateral holes 33 and 34 and the plug 50.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The water, hot water, and hot water flow holes of the present invention correspond to the tap water inflow hole 26, the hot water inflow hole 27, and the hot water outflow hole 28 (all through holes) of the embodiment,
Similarly,
The water-side flow hole corresponds to the tap water inflow hole 26,
The hot water distribution hole corresponds to the hot water inflow hole 27,
The branch part corresponds to the branch port 19,
The seal member corresponds to the O-ring 54,
The present invention is not limited to the configuration of the above-described embodiment.

  For example, the offset structure of the branch port 19 and the plug 50 includes the offset structure of the axial cores α and β, and the branch port 19 itself and the plug 50 itself are offset in the axial direction of the branch plug body 12. May be adopted.

The use condition figure which shows the branch port attachment of this invention. The top view of a branch port attachment. Sectional drawing of the principal part in alignment with the AA of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. Exploded view of the bifurcated attachment. The bottom view of a branch stopper main body. Sectional drawing which shows the branch outflow of hot water. Sectional drawing which shows the branch outflow of tap water. The principal part expanded sectional view of FIG. The expanded sectional view which shows the other Example of a plug structure. Sectional drawing of the conventional branch port attachment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Outer cylinder 12 ... Branch plug main body 19 ... Branch port 26 ... Tap water inlet (water side circulation hole)
27 ... Hot water inflow hole (flow hole on the hot water side)
28 ... Hot water outflow hole (circulation hole for hot water)
33, 34 ... Horizontal hole 50 ... Plug 54 ... O-ring (seal member)

Claims (4)

A branch port attachment in which water, hot water, and hot water flow holes are independently formed in the axial direction in a branch plug body provided in the outer cylinder,
Form lateral holes in the water and hot water circulation holes,
A branch port attachment configured to selectively close these lateral holes with a non-screw-structured axial plug. The branch port attachment according to claim 1, wherein the outer end of the plug is brought close to or in contact with the inner peripheral surface of the outer cylinder. The outer cylinder is provided with a branch point for branching out water or hot water from a lateral hole selected by non-plugging,
The branch port attachment according to claim 1 or 2, wherein an axial core line of the plug is offset with respect to an axial core line of the branch portion. The branch port attachment according to any one of claims 1 to 3, wherein a seal member is interposed between an inner periphery of the horizontal hole and an outer periphery of the plug.

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