JPH04138178A - Valve automatic opening and closing system for hose reel - Google Patents

Abstract

PURPOSE:To improve emergent working property in early fire extinguishment by taking around a valve control arm in the direction for opening an opening and closing valve during the operation for first rotating a hose reel once in the drawing direction of a hose, and reversely operating the arm during the operation for first rotating the reel once in the hose winding direction. CONSTITUTION:The control arm 32 of an opening and closing valve V has a length L shorter than the rotating radius R of a hose reel H, and is extendingly delivered from a mounting base end part P off-centered from the rotating center O of the hose reel H by a distance D to the vicinity of the peripheral part of the hose reel H. During the operation for first rotating the hose reel H once in the drawing direction of a hose 20, the free roller 34 of the arm 32 is pressed, whereby the arm 32 is taken around in the same direction together with the hose reel H within a fixed angle range to open the opening and closing valve V. Similarly, during the operation for first rotating the hose reel H once in the winding direction of the hose 20, the valve V is closed. Thus, the valve can be automatically opened and closed.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an automatic valve opening/closing mechanism for a hose reel used, for example, in a fire hydrant. It was devised to ensure reliable opening/closing control.

<Conventional technology> The automatic opening/closing mechanism of fire hydrant valves has already been developed since 1986.
No. 0-942, No. 60-943, JP-A-59-276
No. 1, No. 6:2-27973, etc. have been proposed.

<Problems to be Solved by the Invention> However, in all of these conventional techniques, it is necessary to incorporate a dedicated valve mechanism for each hose reel into the limited hollow space of the hose winding core tube.

In other words, taking the above-mentioned Utility Model Publication No. 60-942 as a representative example, the specially processed reel (3) and valve body (8),
Guide member (12), hose connection member (20), key (
17), ball stopper (18), spring (21)
) etc. must be built into the hose winding core cylinder in the narrow space of the drum (1). Since the required structure is extremely complex and the number of parts is extremely large, assembly, maintenance, and inspection cannot be performed easily, and stability and reliability of opening and closing operations and mass production effects cannot yet be expected. It is also impossible to install a fire hydrant as a retrofit or a general-purpose accessory to a fire hydrant that is already on the market as a proven product.

<Means for Solving the Problems> The present invention intends to improve such problems, and for this purpose, a hose reel that is configured to be rotated in forward and reverse directions by drawing out and scooping operations of a fluid hose, and a an on-off valve installed in the fluid supply path of the hose reel, and the control arm of the on-off valve is dimensioned to have an operating length shorter than the rotation radius of the hose reel, and the control arm of the on-off valve is dimensioned to have an operating length that is constant with the rotation center of the hose reel. The hose reel extends from the mounting base end eccentrically by a certain distance to the vicinity of the peripheral edge of the hose reel, and supports an idling roller facing the side plate of the hose reel at the distal end of the extension. During the first rotation in the pulling direction of the valve, by pressing the free rotating roller of the valve control arm, the valve control arm can be opened and closed along with the hose reel by a certain angle range in which the valve is opened. The one-way cam for opening the valve, which is rotated reciprocally in the same direction, also presses the free rotating roller of the valve control arm during the movement in which the hose reel is initially rotated once in the direction of removing the hose. A one-way cam for closing the valve, which reciprocates in the same direction along with the hose reel, is attached to each valve control arm near the peripheral edge of the side plate of the hose reel, only within a certain angular range in which the valve closes. Its main feature is that it is installed separately.

<Example> Hereinafter, the present invention will be described in detail based on the illustrated example. Figures 1.2 show an automatic valve opening/closing mechanism embodied for a hose reel of a fire hydrant, and (M) shows a valve automatic opening/closing mechanism for a fire hydrant hose reel. The internal wall surface (11) of the storage box is an elbow tube fixedly supported here via a frame-shaped mounting bracket (12) as shown in FIGS. The hollow shaft (13) of (J) is also open, and the housing (14) of the on-off valve (V) is located at the other end of the opening.
However, the attachments are fixed in such a manner that they are in a mutual communication connection state and intersect at right angles.

As shown in Figure 6.7, the swivel joint (J) is equipped with a housing (16) that can freely rotate around the axis of its hollow shaft (13) via a bearing (15). and its housing (16
The center of the circular side plate (17) forming a bow reel (H) on the overhanging base flange of the
8) etc., the installation is integrated.

Therefore, the hose reel (H) is
13) can be rotated in forward and reverse directions around the axis (O), and the water supply hose (20) is held in the core tube (19).
Also, the water supply hose (20) can be pulled out and operated from here. The water supply hose (20) is kept in a circular or elliptical cross-section with a reinforced steel band (not shown), so that it is always open and can carry out its water supply function without any problem even when the pupil is closed. ing.

In addition, the above swivel joint (J) is the hose reel (
Needless to say, it faces the hollow interior of the core tube (19) in H), and the open base end of the water supply hose (20) is connected to the housing (16). (21
) is a ring nut for fastening the hollow shaft (13) to the mounting bracket (12), (22) is a distance collar for the hair ring (15), and (23) is a ring nut for preventing the hair ring (15) from being removed. , (24) indicates a watertight circle.

On the other hand, the opening/closing valve (V) has a valve pole (25) enclosed in its housing (14) in the form of a ball valve as shown in FIG. Cap body (26)
is in communication with the water pipe (27). A valve (V) for opening and closing the water supply pipe (27) is inserted into the water supply path from the water supply pipe (27) to the water supply hose (20). (28) is a pair of facing valve seats, (
29) is a rotating stem that is locked to the circumferential surface of the valve ball (25), and has an axis parallel to the hollow shaft (13) of the swivel joint (J).

Further, (30) and (31) are a watertight backing fitted to the body surface of the rotating stem (29) and its presser cap, and (32) is also exposed from the housing (14) of the rotating stem (29). The valve control arm is attached to the distal end so as to be able to rotate together with the valve control arm, and extends from the rotating stem (29) to the hose reel (H) in an extended state almost parallel to the side plate (17) of the hose reel (H). H) along the radial direction. (33) indicates a nut for preventing removal of the control arm (32).

In other words, the valve control arm (32) is connected to the rotating stem (
It moves in an undulating arc around the axis (P) of the water pipe (
The water supply action from the water supply hose (20) from the valve ball (27) to the water supply hose (20) is caused by the valve ball (25) which operates integrally with its rotating stem (29).
) so that it can be closed or opened. In that case, the center of motion of the valve control arm (32) (
P) is the hose reel (H
) from the center of rotation (O) at a certain distance (
D), and its control arm (
The working length (L) of 32) is dimensioned to be shorter than the rotation radius (R) of the hose reel (H).

An idling roller (34) is attached to the distal end of the valve control arm (32), which extends from the base end where it is attached to the rotating stem (29) to the vicinity of the peripheral edge of the hose reel (H).
is pivoted inward facing the side plate (17) of the hose reel (H). (35) is its rotating stem (2
The roller support shaft (36) parallel to the axis of 9) is a nut for fixing this to the control arm (32).

Furthermore, (C1) (C2) are valve control arms (32)
A certain working length (
W) is a pair of a one-way cam for opening a valve and a one-way cam for closing a valve attached to the vicinity of the peripheral edge of the side plate (17) of the hose reel (H), preferably as shown in FIG. By arranging them in a correctly aligned distribution on the diameter line of the hose reel (H), the overall weight balance of the hose reel (H) can be balanced and the hose reel (H) can be rotated without distortion. .

Moreover, the pair of one-way cams (CI) (C2) for opening and closing the valve have the same configuration.

That is, as extracted in Figs. 9 to 11, each of them includes a fixed blade (37) that is integrated with the number plate (17) of the hose reel (H), and a fulcrum to the fixed blade (37). A movable blade (3
9) and a helical spring (40) suspended on the fulcrum pin (38) in order to lock the movable blade (39) in an upright biased state substantially perpendicular to the fixed blade (37). ,
It is finished in an overall hinge form, and the movable blades above (
39) is pressed from the back while resisting the biasing force of the helical spring (40), the ventral surface of the fixed blade (3
7), it falls down as if it were polymerized.

(41) is a mounting hole for the fixed blade (37) on the side plate (17) of the hose reel (H), which is formed into a long and narrow opening along the direction of the working length (W), and the bolt (not shown) (omitted), etc., so that the mounting position can be finely adjusted.

In relation to the rotational direction of the hose reel (H), the one-way cam (C1) for opening the valve has a connection between the hose reel (H) and the water supply hose (20 ) in the pull-out direction (A) (rotated to the left in the figure), the hinge-shaped movable vane (39) is moved by its ventral surface to the valve control arm (3).
The idler roller (34) of 2) is locked and held in an upright position where it can be pressed, and its pressing action moves the valve control arm (32) together with the hose reel (H) in the same direction (A
) by a certain angle range (θ),
The fixed vane (37) is integrally attached to the side plate (17) of the hose reel (H) so that the valve (V) can be opened automatically. ) is the winding direction (B) of the water supply hose (20)
When the movable vane (39) is rotated to (clockwise rotation as shown in the figure), the movable vane (39) is rotated from the back side by the idle roller (34) of the valve control arm (32) as shown in FIG.
It is pushed down into a superposed state on the fixed blade (37).

On the other hand, regarding the one-way cam (C2) for closing the valve, as is clear from Figure 15.16, contrary to the one-way cam (C1) for opening, the hose reel (H) winds up the water supply hose (20). When rotated in direction (B), the movable vane (39) is also locked in the upright state by its ventral surface to press against the free rotating roller (34) of the valve control arm (32), and the pressing action causes the valve to close. The control arm (32) and the hose reel (H) can be reciprocally rotated in the same direction (B) by a certain angle range (θ) to automatically close the valve (V). like,
The fixed wing 1 (37) is attached to the side plate (17) of the hose reel (H), and the hose reel (H) is pulled out in the opposite direction (A) of the water supply hose (20).
When the movable vane (39) is rotated to the position shown in FIG. 17, the movable vane (39) is automatically pushed down from the back side by the idle roller (34) of the valve control arm (32).

That is, the valve control arm (32) is connected to the hose reel (H).
As the hose reel (H) rotates forward and backward, the valve opening one-way cam (C1) and valve closing one-way cam (C2) attached to the hose reel (H) move the hose reel (H) at a certain distance from its center of rotation (O). Using the self-centered motion center (P) eccentric by (D) as a fulcrum, it moves in a circular arc reciprocatingly within a certain angle range (θ) of approximately 90 degrees, and automatically controls the opening and closing of the valve (V). However, in this case, the working length (L) of the valve control arm (32) is dimensioned to be shorter than the rotation radius (R) of the hose reel (H), as described above. Based on this, as is clear from Fig. 12.15, in the open position (a) of the valve (V), the idle roller (34) of the control arm (32) is at the center of rotation (O) of the hose reel (H). , and also in the closed position (b) of the valve (V), the control arm (3
The idling rollers (34) of 2) change their positions to the inner side closer to the rotation center (O) of the hose reel (H).

The operating length (W) of the one-way cams (C1) and (C2) for opening and closing the valves is set at a predetermined constant value so that the idle roller (34) cuts off the distance between the inside and outside where the position changes. However, in that case, the movable vane (39) of the one-way cam (C1) for opening the valve is attached to the water supply hose (2) as shown in Figure 12.
0) Hose reel (H) facing the withdrawal direction (A)
When the valve control arm (3) rotates, it presses the idle roller (34) at the valve closed position (b),
2) can be rotated in the same direction (A) as the valve (V) opens, but once the valve (V) is opened,
The hose reel (H) is moved by at least the diameter dimension (X) of the idler roller (34) so that it no longer presses the idler roller (34) in its open position (a) and can now be retracted. It is arranged at an inner position close to the center of rotation (O).

Furthermore, the movable blade (39) of the one-way cam (C1) for opening the valve is in the valve closing position (b).
In order to effectively press the idling roller (34) without loss of pressing force, a constant offset angle (α) of about 15 degrees is set at the leading inner end as shown in FIG. To maintain the inclined state, use the side plate (
17).

On the other hand, the especially movable vane (39) of the one-way cam (C2) for closing the valve is connected to the water supply hose (2
When the hose reel (H) rotates in the winding direction (B) of 0), it presses the free rotating roller (34) at the valve open position (a), and the valve control arm (32
) can be rotated in the same direction (B) as the valve (V) is closed, but after the valve (V) is closed, the idle roller (34) at the closed position (b) is rotated twice. At least the diameter dimension (X) of the idler roller (34) is also provided so that it can escape from the layer without pressing against it.
On the contrary, it is arranged at an outer position away from the center of rotation (O) of the hose reel (H).

Moreover, based on the same purpose as the movable vane (39) of the one-way cam (C1) for opening the valve, the movable vane (39) of the one-way cam (C2) for closing the valve allows
The movable blade (39) is arranged so that it can effectively press the idler roller (34) at the valve open position (a).
It is also attached to the side plate (17) of the hose reel (H) in the inclined position shown in FIG.

In other words, the one-way cam (C1) for opening the valve is operated only during the initial one-rotation movement in the drawing direction (A) of the water supply hose (20). ), the valve (V) is opened and the hose reel (H
), the valve control arm (32) is no longer rotated, while the one-way cam (C2) for valve closing is rotated in the opposite direction of the water supply hose (2o). by rotating the control arm (32) of the valve (V) in the open position (a) only during one initial rotational movement in direction (B);
The valve (V) is closed and the valve control arm (32) is not rotated during the second and subsequent rotations of the hose reel (H).

In the configuration of the above embodiment, when performing fire extinguishing work using the fire hydrant, the tip of the water supply hose (20), which has been tied to the hose reel (H) in advance, must be It is enough for a person to pull it out while grasping it, and then the valve (V) will automatically open, allowing water to be fed from the water pipe (27) to the water hose (20).

That is, as shown in FIG. 12, as long as the hose reel (H) is rotated in the drawing direction (A) of the water supply bowl (20) (clockwise rotation as shown), the side plate (17 ) The movable blade (39) of the pulp release '7-way cam (C1) attached to the valve presses the free rotating roller (34) of the valve 1i1J211 arm (32) with its upright ventral surface as shown in Fig. 13. act to move its control arm (32) from the closed position (b) to the open position (a) of the valve (V), together with the hose reel (old), in a reciprocal direction in the same direction (A). Therefore, the valve (V) is automatically switched to the open state.

In the process in which the valve control arm (32) is moved in an arc from the closed position (b) of the valve (V) toward the open position (a) by a certain angle range (θ) of about 90 degrees, the valve opening Movable vanes in one-way cam (CI) (
The inner end of the valve control arm (32) comes into contact with the idler roller (34) of the valve control arm (32) and presses it, and the idler roller (39) receives the pressing force. 34) gradually and smoothly moves the movable blade (
As soon as the valve control arm (32) reaches the open position (a) of the valve (V), the free rotating roller (34) is moved by the ventral surface of its movable vane (39). ) will automatically be released.

Therefore, even if the hose reel (H) continues to rotate in the same direction, the movable blade (39) of the one-way cam (C1) for opening the valve will double-layer the idle roller (34) of the valve control arm (32). There is no pressing action, and as a result, the water supply hose (20) can be pulled out for a longer length without any trouble.

In addition, the water supply hose (20
) in the pulling direction (A), the movable vane (39) of another valve closing one-way cam (C2) moves the valve control arm ( Since it is pushed down from the back side by the free rotating roller (34) of 32), the water supply hose (20) can be pulled out for a long time as described above, and the valve (V) can be moved out of position in the open state. There is no possibility that this will occur.

To close the valve (V) that has been opened as described above, the water supply hose (20) may be operated to remove the water from the hose reel (H).

As shown in Figure 15, all you have to do is rotate the hose reel (H) in the opposite winding direction (B) of the water supply hose (20) (clockwise rotation as shown), and it will be attached to the hose reel (H). The movable vane (39) of the valve closing arm, Acham (C2), is rotated by the free rotating roller (32) of the valve control arm (32) by its belly surface which also stands up as shown in Fig. 16.
34) and moves its control arm (32) from the open position (a) of the valve (V) to the closed position (b) together with the hose reel (H) in the same direction (B). As a result, the valve (V) automatically switches to its original closed state.

In the process in which the valve control arm (32) is returned to the closing position (b) of the valve (V), the outer end of the movable vane (39) in the one-way cam (C2) for closing the valve is moved - earlier. The idler roller (34) of the valve control arm (32) is captured and pressed, and the pressed idler roller (34) gradually and smoothly rotates on its own axis. When the movable vane (39) escapes to the inner end and eventually reaches the closed position (b) of the valve (V), the idler roller (34) is moved by the ventral surface of the movable vane (39). The pressing effect is automatically released.

Therefore, the hose reel (H) can be moved in the same direction (B) as it is.
), the valve closing one-way cam (C
The movable vane (39) of 2) is connected to the valve control arm (32).
As a result, the water supply hose (20) can be completely skimmed without any trouble.

Also, while the hose reel (H) is rotating in the direction (B) of removing the water supply hose (20), the movable blade (39) of the one-way cam (C1) for opening the valve mentioned above moves as shown in FIG. As a result, the valve control arm (32) in the valve closed position (b) is automatically pushed down from the back side by the free rotating roller (34), so that the valve (V) is no longer in the closed state. There is no need to worry about moving the target out of position.

In the illustrated embodiment, the opening position (a) of the valve (V) by the valve control arm (32) is controlled by its idler roller (3).
4) is the outer position away from the rotation center (O) of the hose reel (H), and the valve (V) is also in the closed position (b)
The free rotating roller (34) of the control arm (32) approaches the center of rotation (O) of the hose reel (H) and is positioned inward, but the relationship is such that the positions are opposite to each other. You can also set it.

Furthermore, although the one-way cams (C1) and (C2) for opening and closing the valve (V) are embodied as hinges that are identical to each other, it is possible to achieve alternative and individual cam actions as described above. To the extent possible, it is acceptable to adopt a configuration different from the hinge form.

Furthermore, the opening/closing valve (V) adopts a ball valve form on the mouth side, and its rotation action over the above-mentioned fixed angle range (θ) allows the water supply hose (20) to be connected from the water supply pipe (27) to the water supply hose (20). A form other than the valve ball (25) may be adopted as long as it can open and close the water supply path.

Although an embodiment has been described in which the hose reel is applied to a fire hydrant, the present invention can also be applied to a hose reel used for watering in an orchard or a general household or for other purposes. Moreover, by using the water supply hose (20) as a fluid hose and the water supply pipe (27) as a fluid supply pipe, the present invention can be widely applied and implemented for use with fluids, air, and other fluids outside the waterside. , of course it is possible.

<Effects of the Invention> As described above, in the automatic valve opening/closing mechanism for a hose reel according to the present invention, due to its structure, the hose reel (H) is rotated in forward and reverse directions by the pull-out operation and winding-up operation of the fluid hose (20). and an on-off valve (V) inserted and installed in the fluid supply path to the hose (20), and the control arm (32) of the on-off valve (V) is connected to the rotation radius of the hose reel (H). Acting length (L) shorter than (R)
), and the center of rotation of the hose reel (H) (
The hose reel (H) is extended from the mounting base end eccentrically a certain distance (D) to the vicinity of the periphery of the hose reel (H).
In addition, the side plate of the hose reel (H) (
17), while the valve control arm is rotated during the movement in which the hose reel (H) is initially rotated once in the direction (A) of pulling out the hose (20). By pressing the free rotating roller (34) of (32), the valve control arm (32) is opened and closed along with the hose reel (H) by a certain angle range (θ) in which the valve (V) opens. During the movement of the one-way cam (C1) for opening the valve, which is reciprocally rotated in the same direction (A), and the hose reel (H), which is initially rotated once in the winding direction (B) of the hose (20), Again, by pressing the idler roller (34) of the valve control arm (32), the hose reel (older and At the same time, a one-way cam (C2) for closing the valve, which reciprocally rotates in the same direction (B), is installed separately near the peripheral edge of the side plate (17) of the hose reel (H). Therefore, it has the effect of completely solving the problems of the prior art mentioned at the beginning.

In other words, according to the configuration of the present invention, as the hose reel (H), the opening/closing valve (V), and the swivel coin point (J), commercially available products with stable functions and a proven track record can be used. The rotating stem (29) of the valve (V)
) from which a valve control arm (32) with an idling roller (34) is integrally extended, while a hose reel (former side plate (17) has a + (D) corresponding to an idling roller (34) , one-way cam for aligning and closing valve Ia (C
I) The above-mentioned valve (V) can be automatically and reliably controlled to open and close based on an extremely simple necessary mechanism that only requires a pair of (C2) to be installed as accessories.

The opening/closing action of the valve (V) is controlled by Beausrills (
It is automatically controlled by the forward and reverse rotation of H), and water or other fluids can be discharged from the hose (20) by simply pulling out the hose (20) from the hose reel (H), so it is especially useful for fire hydrants. It is ideal for
It has excellent emergency workability for initial fire extinguishing.

Furthermore, if the configuration of claim 2 is adopted, the pair of one-way cams (CI) (C2) for opening and closing the valves can be made identical to each other, and can be finished as a simple and lightweight mechanism, which is advantageous compared to the existing one-way cams (CI) (C2). It can be said that it has excellent adaptability and mass productivity for fire hydrants, etc., and is of great practical benefit.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic front view of the present invention as applied to fire hydrants, Fig. 2 is a partially cutaway surface view, and Figs. 3 to 5 are front, plan, and side views showing the mounting bracket. , Fig. 6.7 is a semi-cutaway sectional view and plan view showing the swivel joint, Fig. 8 is a partially cutaway side view showing the valve in the open state, and Figs. 9 to 11 show the one-way cam. Extracted front view, plan view and side view, Fig. 12 is an explanatory diagram showing the valve opening process, Figs. 13 and 14 are enlarged side views showing the undulating action state of the one-way cam for opening the valve, FIG. 15 is an explanatory diagram showing the valve closing action process corresponding to FIG. 12, and FIGS. 16 and 17 are enlarged side views showing the undulation action state of the one-way cam for closing the valve. (14)...Housing (17)...Side plate (20)...Fluid hose (32)...Valve control arm (34)...Idle roller (37)... ... Fixed blade (38) ... Fulcrum pin (39) ... Helical spring (A> ... Pulling out direction (B) ... Pupil removal direction (C1) ... One-way cam for valve opening (C2)
・・・One squid L (D) for valve closing ・・・
・Constant distance (H) <L) (R) (V) (θ) ・Hose reel・Working length・Rotation center・Rotation radius・Opening/closing valve・Constant angle range Figure 3 Figure 5 Figure 6 Figure 8 Figure 73 Figure 76 Figure 77

Claims (1)

[Claims] 1. A hose reel (H) that is rotated in forward and reverse directions by pulling out and winding up the fluid hose (20), and a hose reel (H) that is inserted and installed in the fluid supply path to the hose (20). The control arm (32) of the on-off valve (V) has an operating length (L) shorter than the rotation radius (R) of the hose reel (H).
), and the center of rotation of the hose reel (H) (
The hose reel (H) is extended from the mounting base end eccentrically a certain distance (D) to the vicinity of the periphery of the hose reel (H).
Moreover, the side plate of the hose reel (H) (
The valve control arm (32) pivots on an idler roller (34) facing the valve control arm (32) during the movement in which the hose reel (H) is initially rotated once in the direction (A) of pulling out the hose (20). By pressing the free rotating roller (34) of the valve control arm (32), the opening/closing valve (V) opens and closes the valve (V) in the same direction ( The one-way cam (C1) for opening the valve, which is reciprocally rotated toward A), and during the movement in which the hose reel (H) is initially rotated once in the winding direction (B) of the hose (20), the valve is also controlled. By pressing the idling roller (34) of the arm (32), the valve control arm (32) is opened and closed together with the hose reel (H) within a certain angle range (θ) in which the valve (V) is closed. , a one-way cam (C2) for closing the valve that reciprocally rotates in the same direction (B) is installed separately near the peripheral edge of the side plate (17) of the hose reel (H). Automatic valve opening/closing mechanism for hose reels. 2. Fixed vanes (37) that are integrated with the one-way cams (C1) and (C2) for opening and closing the valve (V), both of which are attached to the side plate (17) of the hose reel (H), and their fixing. A movable blade (39) is pivotally attached to the blade (37) via a fulcrum pin (38) so that it can rise and fall freely, and the movable blade (39) is pressed into an upright biased state almost at right angles to the fixed blade (37). In order to lock the valve, the helical spring (40) wound around the fulcrum pin (38) forms an overall hinge shape, and the one-way cam (C1) for opening the valve is moved by the hose reel (H). When the hose (20) is rotated in the withdrawal direction (A), the upright movable vane (39) can press the idler roller (34) of the valve control arm (32) with its belly surface, and the hose Reel (H
) is rotated in the opposite winding direction (B) of the hose (20), the upright movable vane (39) is pushed down from the back side by the idle roller (34) of the valve control arm (32). While attaching the one-way cam (C2) for closing the valve to the side plate (17) of the hose reel (H), the hose reel (H) is rotated in the winding direction (B) of the fluid hose (20). Sometimes, the upright movable vane (39) is arranged so that its ventral surface can press against the idler roller (34) of the valve control arm (32), and the hose reel (
H) is rotated in the opposite direction (A) for pulling out the hose (20), the upright movable vane (39) is rotated from its back side to the idler roller (34) of the valve control arm (32).
) is attached to the side plate (17) of the hose reel (H) so as to be pushed down by the hose reel (H).
Automatic valve opening/closing mechanism for the hose reel listed.