JP3066501B1 - Fitting for hot water circuit connection - Google Patents

Abstract

A pair of joint halves disposed in the middle of a hot water circuit
(13) This is a hot water circuit connecting joint consisting of (23), and one of the joint halves (13) has a pair of tubular plug terminals (15a) (15b) and a pair of hot water hoses communicating therewith. A male case (1a) having a mouth (16a) (16b) and a male case body (17) covering the male case (1a), and the other joint half (23) has a pair of plug terminals respectively connected thereto. Female tool (1) having a plug connection port (25a) (25b) and a pair of hot water hose connection ports (26a) (26b) communicating therewith.
b) and a female case body (27) covering the same,
In the type in which the joint halves (13) and (23) are connected by engaging the male case body (17) and the female case body (27),
The hot water hose connection to the hot water hose connection ports (16a) (16b) (26a) (26b) must not be exposed to the outside. SOLUTION: The male case body (17) has a size surrounding the entire male tool (1a), and the female case body (27) has a size surrounding the entire female tool (1b).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for connecting a hot water circuit, and more particularly to a joint for connecting a hot water circuit disposed in a circulation circuit between a heat source device and a terminal device.

[0002]

2. Description of the Related Art As shown in FIG. 7, a heat source device (20) on the outdoor side and a radiator (2) on the indoor side as a fan heater, a floor heater, etc. The two-way connector (3) is provided on a wall (W) near the radiator (2), which is connected by a hot water circulation circuit comprising return routes (12) and (22).

[0003] The connecting device (3) comprises a connecting device main body (3a), commonly called a hot water outlet, installed on a wall (W), and a plug (3b) detachably connected thereto. The connection tool body (3a) and the heat source device (20) are connected to the forward path (11) and the return path.
(12), and the radiator (2) and the plug (3b) are connected via the outward path (21) and the return path (22). In this device, when the plug (3b) is connected to the connector body (3a), the heat source device (1) and the radiator (11) (21) and the return routes (12) (22) are connected. 2) is connected, and hot water circulates between the heat source device (20) and the radiator (2).

A steel pipe is generally used as the outward path (11) and the return path (12) on the outdoor side, and the outward path (21) and the return path (2) on the indoor side are generally used.
2) As flexible water hoses (10a) (10
b) is adopted.

A radiator having such a circulation circuit (2)
The hot water hose (10a) (10
If b) does not reach the radiator (2), extend the hoses (30a) and (30b) to the hot water hoses (10a) and (10b) as shown by the two-dot chain line Extension connection via (31).

As a joint for connecting this kind of hot water circuit,
There is one disclosed in 62-12434. As shown in FIG. 8, a male tool (31a) and a female tool (31a) which can be detachably connected are provided.
b) are accommodated in a male case body (32a) and a female case body (32b), respectively, which are removably engageable.

The male tool (31a) is provided with a pair of plug terminals (not shown) and a pair of hot water hose connection ports (33a) (33b) so as to project in opposite directions, respectively. (31
b) is provided with a pair of plug connection holes (not shown) into which the plug terminals are inserted, and a pair of hot water hose connection ports (34a) (34b) protruding from the opposite side. Then, when the male tool (31a) and the female tool (31b) are accommodated in the male case body (32a) and the female case body (32b), respectively, both ends of the male case body (32a) receive the plug terminals. And the hot water hose connection ports (33a) and (33b) respectively protrude, and the hot water hose connection ports (34a) and (34b) protrude from one end of the female case body (32b). When the plug terminals are inserted into the plug connection holes in a watertight state, the male tool (31a) and the female tool (31
b) is connected to the flow path.

[0008] A valve body (not shown) for opening and closing these flow paths is incorporated in each of the flow path following the plug connection hole and the flow path in the plug terminal. When the valve body is inserted deeper than a certain depth, each of the valve elements opens, and the flow path in the male tool (31a) and the flow path in the female tool (31b) communicate with each other. Conversely, when the plug terminal is pulled out from the plug connection port, each of the valve bodies is closed by the urging force of the spring provided together with the valve body in the male tool (31a) and the female tool (31b). .

At the same time that the plug terminal is connected to the plug connection hole, a lock lever (3) provided on the male case body (32a) is provided.
The recess (36) of (5) is engaged with the one-way engagement by the biasing force of the repulsion spring (38) provided together with the lock lever (35) on the engagement shaft (37) provided in the female case body (32b). It is configured to match.

A release knob (39) projects out of the male case body (32a), and the end (35a) of the lock lever (35) is engaged with the release knob (39). Thus, the release knob (39) is configured to interlock with the lock lever (35). Therefore, when the release knob (39) is slid in the opposite direction (right side in the drawing) to the connection direction of the male member (31a), the lock lever (35) resists the urging force of the repulsion spring (38). , Around the rotation shaft (4), in a direction in which the concave portion (36) is disengaged from the engagement shaft (37), and the engagement of the lock lever (35) with the engagement shaft (37) is released. It will be.

To extend and connect the extension hoses (30a) and (30b) to the hot water hoses (10a) and (10b) via the hot water circuit connection joint (31), first, the hot water hose of the male fitting (31a) is used. Connection port (3
After connecting the hot water hoses (10a) (10b) from the plug (3b) to the 3a) (33b), the male case (32a) is covered with the male fitting (31a). Similarly, hot water hose connection port (34a) (34b) of female tool (31b)
Are connected to the extension hoses (30a) and (30b), and the female tool (31b) is covered with a female case body (32b). Extension hose (30a) (30b)
Is connected to the hose connection port of the radiator (2) in a state where it cannot be removed. Then, by connecting the plug terminal to the plug connection hole and engaging the lock lever (35) with the engagement shaft (37) one-way, the male case body (32a) and the female case body (32b) are connected. Connect. Thereby, the extension hoses (30a) (30b) can be extendedly connected to the hot water hoses (10a) (10b) in the flow path connection state. Also, operating the release knob (39) provided on the connection joint (31),
When the engagement between the male case body (32a) and the female case body (32b) is released, the male tool (31a) and the female tool (31b) can be separated from each other with the valve closed.

[0012]

However, in the above-mentioned conventional joint for connecting a hot water circuit, hot water hose connection ports (33a) and (33b) are provided from the male case body (32a), and hot water is provided from the female case body (32b). Since the hose connection ports (34a) and (34b) are each protruded, the connection between the hot water hose connection ports (33a) (33b) and the hot water hoses (10a) (10b) and the hot water hose connection port
The connection between the extension hoses (34a) and (34b) and the extension hoses (30a) (30b) is exposed to the outside. Therefore, each hot water hose connection port
(33a) (33b) (34a) (34b) may be damaged by an external impact.

The heating heat medium passing through the hot water hoses (10a) (10b) and the extension hoses (30a) (30b) is hot water or another heated liquid heated to 60 to 80 degrees. Therefore, the hot water hoses (10a) (10b) and the extension hoses (30a) (30b) through which they flow are heated from the inside, and it is dangerous to carelessly touch them. Therefore, it is conceivable to use a cladding tube made of a flexible resin pipe that bundles and accommodates the hot water hoses (10a) (10b) and the extension hoses (30a) (30b), respectively. Connection port (33a) (33b) (3
4a) (34b) Since it is not possible to cover the connection part to each, even when using the above-mentioned cladding tube, the connection part is exposed, so carelessly to this connection part The danger of touching is not avoided.

In the above-mentioned conventional construction, the hot water hoses (10a) (10b) and the extension hoses (30a) (30b) are connected to the open ends of the male case body (32a) and the female case body (32b). It is configured to be attached to the hot water hose connection ports (33a) (33b) (34a) (34b), respectively, but with a male case body (32a) and a female case body (32b) made of resin. If you only hold down, if the hot water hoses (10a) (10b) and extension hoses (30a) (30b) are accidentally pulled, the hot water hose connection ports (33a) (33b)
(34a) and (34b) may be lost. To attach a rubber hose to each hose connection port in a retaining state,
Conventional rubber tube stopper is desirable, but in the above-mentioned conventional one,
It is difficult to attach the rubber pipe stopper, and even if it is attached, the rubber pipe stopper is exposed to the outside, so it is unsightly and dangerous in a room.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is directed to a hot water circuit connecting joint provided in the middle of a pair of hot water circuits each including a forward return trip, wherein the connecting joint is a pair of hot water circuits. A male member comprising a half, one of the joint halves having a pair of tubular plug terminals for flow path connection and a pair of hot water hose connection ports provided in communication with the plug terminals;
A male case body for covering the male member, and the other of the joint halves has a pair of plug connection ports to which the plug terminals are detachably connected, and a pair of plug connection ports connected to the plug connection ports. A female case provided with a hot water hose connection port, and a female case body covering the female tool, wherein the two joint halves are connected to the male terminal in a state where the plug terminal is connected to the plug connection port. Connection part of the hot water circuit to the hot water hose connection port provided in each of the male tool and the female tool in the hot water circuit connection joint "which is connected by engaging the case body and the female case body in the retaining state." It is an object of the present invention to prevent the light from being exposed to the outside. <1>

[0016]

Means for Solving the Problems Technical means of the present invention taken to solve the above-mentioned problems are as follows: "The male case body is
The female case body is set to have a size surrounding the range from the tip of the plug terminal to the tip of the hot water hose connection port. Is being done. "

The above technical means works as follows. For example, when it is desired to extend a hot water hose as a pair of hot water circuits connected between a radiator and a plug of a connector provided on a wall, one end of the hot water hose having one end connected to the plug, Connected to the hot water hose connection port of either the male tool or the female tool, similarly, the other end of the hot water hose having one end connected to the radiator, the other of the male tool or the female tool And a male case body and a female case body are respectively covered with the male tool and the female tool. Thus, one of the joint halves is attached to one end of the one hot water hose, and the other of the joint halves is attached to one end of the other hot water hose. And when the plug terminal of the male tool and the plug connection port of the female tool are connected, the male case body and the female case body are engaged in a retaining state, and the two joint halves are connected and connected, The hot water hose on the plug side and the hot water hose on the radiator side are connected in a flow path via the joint, so that the entire length of the hot water hose from the plug to the radiator can be extended.

In the case of the male tool, the entire area from the tip of the plug terminal to the tip of the hot water hose connection port is housed in the male case body. Because the entire area up to the tip of the connection port is housed in the female case body,
The male tool and the female tool were entirely protected by the respective case bodies, and the connection portions of the respective hot water hoses to the respective hot water hose connection ports of the male tool and the female tool were also covered by the respective case bodies. It becomes an aspect.

<2> The invention according to the above item 1, wherein "the male case body and the female case body have the hot water hoses connected to the hot water hose connection ports of the male tool and the female tool, respectively. A stopper storage chamber is provided in which a stopper for storing the hot water hose is provided at the hot water hose connection port of each of the male tool and the female tool, for example, as in a conventional rubber pipe stop. Even if it is attached by a proper stopper, the stopper is housed in the stopper housing chamber provided in the male case body and the female case body, and is not exposed to the outside.

<Claim 3> In the invention described in the above item 1 or 2, the invention may be arranged such that “the end of the male case body on the plug terminal side or the end of the female case body on the plug connection port side is An insertion tube portion is provided via a step portion, and an enclosing tube portion into which the insertion tube portion can be inserted and removed is provided on one of the other, and the insertion tube portion is inserted into the enclosing tube portion at a final insertion position. When the plug is inserted into the insertion tube, the engaging portion provided on the insertion tube engages with the engaged portion provided on the surrounding tube, and the open edge of the surrounding tube contacts the step. When the plug terminal is connected to the plug connection port, the plug cylinder provided on one of the male case body or the female case body is inserted into the surrounding cylinder provided on the other side. At the same time, the engaging portion is engaged with the engaged portion, and both are in the retaining state. In this state, since the open end of the surrounding tube is set to abut on the step formed on the base end side of the insertion tube, the male case and the female case are formed. Means that there is no gap between them in the connected state.

<4> In the invention of each of the above items, in the invention described in the above items, "the pair of hot water hoses are bundled and accommodated in a flexible sheathing tube, and one end opening portion of each of the male case body and the female case body,
A locking tongue that locks one end of the flexible cladding tube in a retaining state is provided ”, a pair of hot water hoses connecting the plug and one joint half, and a radiator. The other pair of hot water hoses connecting the other joint half are each bundled and covered with a cladding tube,
The joint half-side end of each cladding tube is locked in a locking state by locking tongue pieces provided on the male case body and the female case body,
It is integrally connected to each joint half. Thereby, the hot water hose is covered almost entirely by the cladding tube and the joint half, and there is no portion directly exposed to the outside.

[0022]

According to the present invention having the above configuration, the following specific effects are obtained. Since the male tool and the female tool of each joint half are completely protected by the male case body and the female case body, respectively, even when the joint half receives an external impact or the like, the male tool and the female tool are used. The inconvenience that the female tool is directly damaged can be prevented. Further, since the connecting portion of the hot water hose to the hot water hose connection port of the male tool and the female tool is also protected by the male case body and the female case body, even if the connecting part receives an external impact, No excessive force acts on the hot water hose connection.

In the item (2), the hot water hose is attached to the hot water hose connection port of each male tool and the female tool by a stopper, so that the hot water hose is securely attached to each hot water hose connection port in a retaining state. It will be. Further, in this mounting state, the stopper is housed in the stopper accommodating chamber in the male case body and the female case body and is not exposed to the outside. In addition to the beautiful mounting specifications, it is possible to prevent the inconvenience that the stopper is subjected to an external impact.

In the case of the item (3), the joint halves can be connected in a retaining state without forming a gap between the male case and the female case, so that the male member and the female at the time of connection can be connected. The fitting can also be reliably protected over the entire area, and if the thickness of the surrounding cylinder is set to match the height of the step, the joint half at the time of connection will have an outer surface And the whole appearance becomes beautiful.

Item 4 has a configuration in which the hot water hose is not directly exposed to the outside by integrally connecting the cladding tube and the joint half so as to be in a retaining state. In addition, there is no danger of inadvertently touching the hot water hose heated from the inside by a high-temperature fluid. Further, there is an effect that the beauty of the indoor hot water circulation circuit is improved.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, similarly to the conventional one, as shown in FIG. 7, a heat source (20) is provided with a connector body (3a) provided on a wall surface (W) and an outward path (11) made of steel pipe. )
And the return path (12) and the indoor radiator
(2) is the connecting device main body (3a) by two hot water hoses (10a) and (10b) made of rubber tubes as an outward route (21) and a return route (22).
It is configured to be connected to a plug (3b) that is detachably connected to the plug.

The radiator (2) is installed on the wall (W)
When moving to a place that is longer than the length of the hot water hoses (10a) (10b) from the hot water hoses (10a) (10b), the extension hoses (30a) (30b ) Can be added.

As shown in FIG. 1, the circuit connecting joint comprises a pair of joint halves (13) and (23), one end of which is connected to the plug (3b). At the other end of (), one joint half (13) having a male member (1a) inside,
The other end of the extension hose (30a) (30b), one end of which is connected to the radiator (2), is connected to the other joint half (2) having a female tool (1b) inside.
3) is configured to be attached.

The above-mentioned hot water hoses (10a) and (10b) and extension hoses
(30a) and (30b) are bundled together and housed together in a flexible cladding tube (40). Cladding tube (40)
Consists of a bellows tube made of an elastic synthetic resin having an oblong cross section that can cover two hot water hoses (10a) (10b) and extension hoses (30a) (30b) arranged side by side. ) To the joint half (13) to the hot water hoses (10a) (10b),
And, the extension hoses (30a) (30b) between the vicinity of the hot water hose connection portion of the radiator (2) and the joint half (23) are loosely fitted to the extension hoses.

First, one joint half (13) will be described with reference to FIGS. The joint half (13) projects in a direction opposite to the pair of tubular plug terminals (15a) (15b) and the plug terminals (15a) (15b) for flow path connection and communicates with the plug terminals (15a) and (15b), respectively. Pair of hot water hose connections (16a) (16
b), and a male case body (17) that accommodates the entire male tool (1a) so as to surround the male tool (1a).

Each of the flow paths in the plug terminals (15a) and (15b) has a built-in valve element (5) for opening and closing each flow path, and each valve element (5) is provided with a spring (51). Thus, it is normally urged in the valve closing direction. Also, on the outer periphery of the plug terminals (15a) (15b),
An O-ring (52) is provided.

The male case body (17) is configured so as to be splittable into a pair of case halves (17a) and (17b) made of a synthetic resin. A locking tongue piece (4) that bites into the open portion on the side between the crests at one end of the cladding tube (40) and locks the cladding tube (40) in a retaining state.
The case body portion (54) in which 1) is formed, and an end extending from the other end of the case body portion (54) via a step (50) and extending beyond the case body portion (54). Small diameter insertion tube (24)
A male case body (17) in the form of a flat elliptic cylinder is formed. The insertion tube (24) has plug terminals (15a) (15
b) shall be formed so as to entirely surround b).

The pair of plug terminals (15) of the built-in male tool (1a) are located at the center of each of the front and back sides of the insertion tube (24).
a) At a position corresponding to the space between (15b), a pair of slits (S) is formed along the axial direction up to the step (50), and a portion located between the slits This constitutes a swinging piece (19) that can swing inward of the insertion tube (24).

At the tip end of the upper surface of the swinging piece (19), an engagement projection protruding outward from the outer surface of the component wall of the insertion tube portion (24) on both sides of the swinging piece (19). Part (14) is formed, and the distal end side of the engaging convex part (14) faces the insertion cylindrical part toward the distal end.
The inclined surface descends inward from the outer surface of the component wall of (24).

The inner peripheral surface of each of the case halves (17a) and (17b) has a ridge (P ₁ ) or a raised portion provided on the outer surface of the male member (1a).
A concave groove (G ₁ ) and a concave portion (G ₂ ) into which (P ₂ ) is fitted are formed, and these ridges (P ₁ ) and raised portions (P ₂ ) are formed by the concave groove (G ₁ ) and the concave portion (G ₂ )
The male tool (1a) is housed in the male case body (17) in such a manner that the male tool (1a) is positioned in the male case body (17) without rattling.

The total length of the male case body (17) is set longer than the total length of the male case body (1a), and the plug terminal ( The ends of the hot water hose connection ports (16a) and (16b),
It is not exposed from the open end at both ends of (17).

Further, in the male case body (17), a relatively large space is provided on the side of the locking tongue piece (41) where the hot water hose connection ports (16a) (16b) are accommodated. It is a stopper storage chamber (18).

The joint half (13) is connected to a pair of hot water hoses (10
a) To attach to one end of (10b), first connect the free end of the hot water hose (10a) (10b) to the hot water hose connection port (1
6a) and (16b) are externally fitted and connected, respectively, and rubber pipe stoppers (53) are attached so as to be externally fitted to the hot water hoses (10a) and (10b) at the connection portions.

The rubber pipe stopper (53) is a hot water hose (10a) (10b)
Tightening band (53
a) and a pair of plate-shaped knobs (53b) for operating attachment and detachment
A normal rubber pipe stopper consisting of the following can be adopted, and the knob part (53b) protruding outward from the tightening band (53a) is also used as the stopper housing chamber (18) of the male case body (17). It can be accommodated inside.

Connect the hot water hoses (10a) and (10b) to the hot water hose connection port.
(16a) Connect the male fitting (1a) connected to (16b) with one half of the case.
(17b). At this time, the ridges (P ₁ ) and the ridges (P ₂ ) of the male tool (1a) are fitted into the grooves (G ₁ ) and the recesses (G ₂ ) of the case half (17b), and the hot water hose ( The ridge (43) at one end of the cladding tube (40) attached to 10a and (10b) is positioned in the case half (17b). Then, in that state, the other case half (1
7a) is put on the case half (17b) to connect them. Thereby, the male member (1a) is accommodated in the male case body (17) in a state of being entirely surrounded, and the locking tongue piece (41)
Will bite into the valley (45) following the peak (43) at the tip of the cladding tube (40), and the cladding tube (40) will be integrally connected to the joint half (13). .

Next, the other joint half (23) will be described with reference to FIGS. The joint half (23) is a radiator
A pair of hot water hose connection ports (26a) (26b) to be attached to the free ends of the extension hoses (30a) (30b) connected to (2) Hose connection port (26
a) a pair of plug connection ports (25a) projecting in the opposite direction to (26b) and connecting the plug terminals (15a) and (15b) of the male tool (1a) to the flow path;
(25b) and a female tool (1b), and a female case body (27) that houses the female tool (1b) so as to surround the entire female tool (1b).
Is provided.

In the plug connection ports (25a) (25b), valve bodies (55) for opening and closing the respective flow paths are respectively incorporated, and each valve body (5
5) is normally urged in the valve closing direction by a spring (51) similar to that of the male tool (1a).

The female case body (27) is configured to be dividable into a pair of synthetic resin case halves (27a) and (27b). One end is formed by combining the case halves (27a) and (27b). A locking tongue that cuts into the open portion on the side between the crests at one end of the cladding tube (40) and locks the cladding tube (40) in a retaining state.
A flat oval cylindrical female case body comprising a case body portion (45) in which the (42) is formed, and an enclosing tube portion (44) extending from the other end of the case body portion (45). (27) is configured. The surrounding tube part (44) has a plug connection port (25a) (25
It is formed so as to entirely surround b).

The outer surface of the case body (45) and the outer surface of the surrounding tube (44) constitute a continuous same plane, and the outer peripheral shape of the distal end of the surrounding tube (44) and its outer shape. The size is the insertion cylinder (2) of the case body (54) of the male case (17).
4) It is formed so as to match that of the step (50) which is the edge on the side.

On the inner peripheral surface of each of the case halves (27a) and (27b), similarly to the case of the male tool (1a), a ridge (P ₁ ) provided on the outer surface of the female tool (1b) is provided. ) And the ridge (P ₂ )
₁ ) and a concave portion (G ₂ ) are formed.The convex ridge (P ₁ ) and the raised portion (P ₂ ) are fitted into the concave groove (G ₁ ) and the concave portion (G ₂ ), and the extension hose (30a) is formed. ) The ridge (43) at one end of the cladding tube (40) attached to the (30b) is located in the case half (27b). Then, in that state, the other case half (27a) is replaced with the case half (27b).
And the two are connected. By this, female tool (1b)
Is positioned in the female case body (27) and housed in a state of being entirely enclosed, and the locking tongue (42) is attached to the cladding tube (40).
The cladding tube (40) is integrally connected to the joint half (23) by biting into the valley (45) following the peak (43) at the tip.

The total length of the female case body (27) is set longer than the total length of the female case (1b), and the plug connection port (25a) of the female case (1b) when housed in the female case body (27). ) (25b)
The tip of the hot water hose connection port (26a) (26b) is the female case body (27)
It is not exposed from the open end of both ends. Also, female case body
Of the inside of (27), the one end of the hot water hose connection port (26a) (26b) side, similarly to the male case body (17), the stopper storage chamber (28)
Is provided.

The surrounding tube portion (44) is formed in such a size that the insertion tube portion (24) of the male case body (17) can be inserted in a substantially closely fitted state. Into the surrounding tube portion (44) to the insertion end position, the end surface of the surrounding tube portion (44) is inserted into the insertion tube portion (24).
Abuts the step (50) formed at the base end of the
In this state, the engaging protrusions (14) are provided at the respective front and back center positions of the surrounding tube portion (44) corresponding to the engaging protrusions (14) provided at the tip of the insertion tube portion (24). Engagement holes (29) for one-way engagement are opened from inside.

The engagement hole (29) is a rectangular hole that penetrates through the wall of the surrounding cylinder (44), and has an inner edge (29a) that opens to the inner side of the surrounding cylinder (44). The rectangle formed by the outer edge (29b) opened to the outer surface side is set to be larger than the rectangle formed by, and each side of the rectangle formed by the inner edge (29a), Each side of the rectangle formed by the outer edge (29b) is continuous by four inclined side surfaces.

The engaging projection (14) is provided at the inner edge.
(29a), and the engaging projections at the time of engagement.
It is assumed that the height of the protrusion of the engaging projection (14) is set so that the top of (14) is recessed by a predetermined depth from the outer edge (29b).

In order to attach the joint half (23) to the free ends of a pair of extension hoses (30a) (30b) connected to the connection port of the radiator (2), first, the extension hose (30a ) (30b) is externally connected to the hot water hose connection ports (26a) (26b) of the female tool (1b), and the male tool (1
Attach the rubber pipe stopper (53) as in the case of a).

In the same manner as in the case of the male tool (1a), the female tool (1b) is provided with a ridge (P ₁ ) or a raised portion (P ₂ ) by a groove (G ₁ ) of the case half (27b). ) Or recess (G ₂ ), and the extension hose (30
a) Crest (43) at one end of cladding tube (40) attached to (30b)
In the case half (27b). Then, in this state, the other case half (27a) is covered with the case half (27b) to connect the two. As a result, the female tool (1b) is accommodated in the female case body (27) so as to be entirely surrounded, and the locking tongue (42) is attached to the crest at the tip of the cladding tube (40). (Four
It will bite into the valley (45) following 3), and the cladding tube (40) will be integrally connected to the joint half (13).

The hot water hoses (10a) (10) extending from the plug (3b)
b) One joint half (13) attached to the free end and a radiator
To connect the other joint half (23) attached to the free end of the extension hose (30a) (30b) extending from (2), as shown in FIG. Insert the female case (24) into the female case
When the plug terminal (27) is inserted into the surrounding tube portion (44), the plug terminals (15a) (15b) are simultaneously inserted into the plug connection ports (25a) (25b).

As the insertion tube portion (24) is inserted into the surrounding tube portion (44), the open end of the surrounding tube portion (44) constitutes the distal end portion of the engaging projection (14). As a result, the engaging projection (14) is pushed inward, and the swinging piece (19) swings inward. The rocking piece (19) is rocked so as to enter the space between the pair of plug terminals (15a) and (15b) of the male tool (1a) built in the male case body (17), An engaging projection projecting outward from the other constituent walls of the insertion tube part (24)
(14) can also pass through the surrounding cylinder (44) of the female case body (27). When the engaging projection (14) reaches the engaging hole (29) of the female case body (27), the swinging piece (19) elastically returns, and the engaging projection (14) engages. One-way engagement from the inside into the hole (29), the male case body (17) and the female case body (27)
Means that they are connected in a retaining state.

At the same time, the open end of the surrounding cylinder (44) comes into contact with the step (50) formed at the base end of the insertion cylinder (24), and the plug terminals (15a) (15b ) Is the hot water hose connection port (1
6a) (16b) to be inserted into the predetermined depth, male (1a)
The valve element (5) inside the female tool (1b) and the valve element (55) inside the female tool (1b) press each other inward, and each of the valve elements (5) and (55) opens, and The flow path in the body (13) and the flow path in the joint half (23) communicate with each other.

As a result, the hot water hoses (10a) (10b) and the extension hoses (30a) (30b) communicate with each other, and are detachably connected to the connector body (3a) attached to the wall surface (W). Plug (3b) and radiator (2) are connected to a hot water hose (1
0a) (10b), circuit connector fittings consisting of fitting halves (13) (23),
And it is connected via extension hoses (30a) (30b).

In a state where the joint half (13) and the joint half (23) are connected, the male case (17) and the female case (27) are connected without any gap and the male case (17) is connected. ) And the outer surface of the female case body (27) are generally flush with each other, whereby the circuit connecting joint formed by connecting the joint half (13) and the joint half (23) is It is constituted by one cylindrical body with good appearance, and only on the front and back sides of the joint half (23) side, there are four inclined side surfaces constituting the engagement hole (29) and the engaging member engaged with the inner bottom. The tops of the convex portions (14) can be confirmed respectively.

In order to release the connection between the joint half (13) and the joint half (23), a finger is inserted into each of the engagement holes (29) on the front and back, and a pair of engagement projections ( 14) Press inward at the same time.
At this time, for example, since the thumb and the middle finger can be inserted into each of the front and back engagement holes (29) and operated, the joint half (13)
The releasing operation of the joint half (23) can be performed with one hand.

Accordingly, each swinging piece (19) swings inwardly of the male tool (1a) at the same time, and the engagement between the engaging projection (14) and the engaging hole (29). Comes off. When the engagement between the engagement projection (14) and the engagement hole (29) is released, the spring (51) contained in the male tool (1a) and the female tool (1b) is elastically restored, and the attachment is performed. Each valve body (5) (55) is pushed in the valve closing direction by the force, and the plug terminals (15a) (15b) escape from the plug connection ports (25a) (25b).

At this time, an O-ring (52) for sealing between the plug terminals (15a) (15b) and the plug connection ports (25a) (25b) is provided around the outer periphery of the plug terminals (15a) (15b). Therefore, the plug terminals (15a) (15b) do not come out of the plug connection ports (25a) (25b) vigorously, but come out slowly. Therefore, plug terminals (15a) (15
When the b) comes out of the plug connection port (25a) (25b),
There is no inconvenience that the liquid such as hot water stored in a) and the female tool (1b) scatters around.

Further, the engaging projection (14), which also functions as a release lever for releasing the connection between the pair of joint halves, is set so as to be located at a position deeper from the outer surface of the joint. In addition, in the joint being connected, the engaging projection (14) does not receive a direct external impact.

In order to release the connection of the joint halves, it is necessary to simultaneously push down the pair of engaging projections (14) inward. The connection is not released even if only one of them is pushed inward, so that the joint halves (13) and (23) do not accidentally come off unless intentional operation is performed.

As described above, by fitting the joint halves (13) and (23) for circuit connection to the free ends of the hot water hoses (10a) (10b) and the extension hoses (30a) (30b) respectively, The length of the hot water hoses (10a) (10b) connected to the plug (3b) can be extended, and the location of the radiator (2) can be changed.

The male tool (1a) and the female tool (1b) are connected to the joint half (1).
3) In the connection state of (23) and in the non-connection state,
The male case body (17) and the female case body (27) are housed in a state of being entirely enclosed and have a hot water hose (1).
0a) (10b) and extension hoses (30a) (30b)
(17) and the female case body (27) and the cladding tube (40) integrally connected to the female case body (27) so as to prevent the male case (1a ) And female tool (1
b), hot water hose (10a) (10b) and extension hose (30a) (30b),
Furthermore, these connection parts are reliably protected from external impact, and there is no danger that the hot water hoses (10a) (10b) and the extension hoses (30a) (30b) are exposed to the outside.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a usage state of a hot water circuit connecting joint according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of one half of a joint half of the joint for connecting a hot water circuit according to the embodiment of the present invention.
7) is a cross-sectional view along the center line, and the male tool (1a) is a cross-sectional view along the axis of one plug terminal (15a) and the hot water hose connection port (16a).

FIG. 3 is an exploded perspective view showing one of the joint halves of the joint for connecting a hot water circuit in the embodiment of the present invention.

FIG. 4 is a sectional view of the other half of the joint half of the joint for connecting a hot water circuit according to the embodiment of the present invention;
7) is a cross-sectional view along the center line, and the female tool (1b) is a cross-sectional view along the axis of one plug connection port (25a) and hot water hose connection port (26a).

FIG. 5 is an exploded perspective view showing the other half of the joint half of the joint for connecting a hot water circuit in the embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a connection state of the hot water circuit connection joint according to the embodiment of the present invention, in which a male case body (17) and a female case body (27) are cross-sectional views along their center lines. And
The male tool (1a) and the female tool (1b) are sectional views along the axis of one plug terminal (15a) and plug connection port (25a).

FIG. 7 is an explanatory view showing a conventional arrangement state of a forward path and a return path.

FIG. 8 is an explanatory view of a conventional joint for connecting a hot water circuit to a plug body.

[Description of Signs] (1a) ・ ・ ・ ・ ・ ・ Male (1b) ・ ・ ・ ・ ・ ・ Female (11) (12) ・ ・ ・ ・ Return (13) (23) ・ ・ ・ ・ Joint Half (15a) (15b) ・ ・ ・ Plug terminal (16a) (16b) ・ ・ ・ Hot water hose connection port (17) ・ ・ ・ ・ ・ ・ Male case body (25a) (25b) ・ ・ ・ Plug connection port (26a) (26b) ・ ・ ・ Hot water hose connection port (27) ・ ・ ・ ・ ・ ・ Female case

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24D 3/10 F16L 37/12 F16L 39/00

Claims (4)

(57) [Claims] 1. A hot water circuit connecting joint disposed in the middle of a pair of hot water circuits comprising an outward return path, wherein the connecting joint comprises a pair of joint halves, and one of the joint halves is: It is composed of a male tool provided with a pair of cylindrical plug terminals for flow path connection and a pair of hot water hose connection ports provided in communication with the plug terminal, and a male case body covering the male tool. The other of the joint halves is a female tool including a pair of plug connection ports to which the plug terminals are detachably connected, and a pair of hot water hose connection ports connected to the plug connection ports, respectively, A female case body that covers the female tool, wherein the two joint halves are in a state where the male case body and the female case body are prevented from coming off when the plug terminal is connected to the plug connection port. In the hot water circuit connection joint that is connected by engaging The male case body has a size surrounding the range from the tip of the plug terminal to the tip of the hot water hose connection port, and the female case body has a range from the tip of the plug connection port to the tip of the hot water hose connection port. A joint for connecting a hot water circuit, the joint being set to a size to surround. 2. The joint for hot water circuit connection according to claim 1, wherein said male case body and said female case body are respectively provided with said hot water hoses at said male tool and female tool hot water hose connection ports. A hot water circuit connecting joint provided with a stopper housing chamber in which a stopper for connecting to a state is stored. 3. The joint for hot water circuit connection according to claim 1, wherein one of an end of the male case body on the plug terminal side and an end of the female case body on the plug connection port side. In addition, an insertion tube portion is provided via a step portion, and an enclosing tube portion into which the insertion tube portion can be inserted and removed is provided on one of the other, and the insertion tube portion is finally inserted into the enclosing tube portion. When the plug is inserted to the position, the engaging portion provided on the insertion tube portion engages with the engaged portion provided on the surrounding tube portion, and the open end edge of the surrounding tube portion has the stepped portion. Joint for connecting hot water circuit to abut. 4. The hot water circuit connecting device according to claim 1, wherein the pair of hot water hoses are bundled and accommodated in a flexible sheathing tube, and one ends of the male case body and the female case body. A joint for connecting a hot water circuit, wherein an opening is provided with a locking tongue for locking one end of the flexible coating tube in a retaining state.