JPH0223913Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a quantitative water stop mechanism for a single faucet for drinking water among sanitary equipment.

Conventionally, a well-known impeller and speed reduction mechanism are used on the flow path communicating with the outflow path of faucets to transmit the reduced rotational force to the operating shaft, and the rotational force is transmitted to the operating shaft through the operating rod that engages with the operating surface of the cam. No. 56-153170 discloses a metering faucet equipped with a metering water stop mechanism that automatically shuts off water when the fluid reaches a preset amount by opening and closing the valve body on the flow path. There is one shown in Figure 1 (Figure 6 of the drawings of the present application).

To explain about FIG. 6 above, the metered water faucet 50
has a cam 51 for setting the water amount inside and the cam 51
A blade wheel 52 connected to the main flow path 5 via a speed reduction mechanism
3, and the metering water function section 54
A flow path 55 for continuous water discharge is provided around the flow path 55, and a valve mechanism 56 for continuous water discharge is arranged in the middle of the flow path 55, and the cam 51 and the impeller 52 are moved in the same direction in the middle of the main flow path 53. For rotation, a shielding wall 57 is provided that blocks approximately 3/4 of the cross-sectional direction of the main flow path 53.

In the case of the above, cams and shielding walls are arranged in narrow places in the main flow path, which significantly restricts the flow rate passing through the main flow path, and the above-mentioned flow path damage prevention is not enough. There were inconveniences such as the valve not opening and closing smoothly due to pressure.

This invention solves the above problems, and by separating the flow path and the water metering function, smoothes the flow of water and the opening/closing operation of the valve, and also simplifies and compacts the water metering function. The purpose is to measure the improvement of functionality.

The basic structure of this device is to separate the flow path on the primary pressure side leading to the water source and the flow path on the secondary pressure side leading to the discharge pipe to allow water to flow through the valve seat port equipped with an operating valve. A machine casing is provided in the middle of the flow path, and within the machine casing, a blade wheel rotates by water pressure, a speed reduction mechanism that is linked to the blade wheel and decelerates the rotational force of the blade wheel, and the reduced rotational force. The cam, the actuating arm, and the actuating valve can be connected to each other by incorporating a water metering function such as a cam driven via a camshaft and an actuating arm that engages with the actuating edge of the cam to stop or release the impeller. A water spouting amount setting board and a handle for selecting and setting a desired fixed amount or continuous water spouting are mounted on the camshaft.

Hereinafter, one embodiment of this invention will be described in detail based on the drawings.

In this invention, as shown in FIGS. 1 to 4 A and B, the main body 1 of the metering stop valve is a single faucet, and the back side has a flow path 2 on the primary pressure side leading to the water source, and the flow path 2
The flow path 3 on the secondary pressure side is communicated with the flow path 3 on the secondary pressure side through a valve seat opening 5 in which an operating valve 4 is disposed so that the operating head 6 of the operating valve 4 can be freely opened and closed. It extends into the interior of the machine casing 7, which is separated from the passageway 3. The flow path 3 communicates with an inlet 8 provided on one pair of sides of the machine casing 7, and the outlet 9 communicates with a flow path 3a leading to a discharge pipe 10, and between the inlet 8 and the outlet 9, The blade wheel 11 is arranged so as to rotate, and is linked so that the rotational force generated in the blade wheel 11 is transmitted to a public speed reduction mechanism 15 via a gear 13 at the end of the shaft 12 and a gear 14 that meshes with the gear 13. The gear 14a at the end of the speed reduction mechanism 15 meshes with a sliding gear 17 provided at the end of the camshaft 16 and not transmitting transmission during reverse rotation. The cam 18 fitted onto the cam shaft 16 is recessed in the circumferential surface and has the working head 6.
A semicircular arc-shaped working edge 21 that engages with the working head 6a of the working arm 20 to discharge a fixed amount of water by engaging with the working head 6a of the working arm 20, which will be described later, and a working edge 21a that similarly performs continuous water spouting are provided on the relief groove 19 and the peripheral edge of one side. An operation stop position 22 is provided at one end of the working edge 21a, where water supply is stopped and the impeller 11 is stopped by the operation arm 20 at the same time. As shown in FIG. 4A, the water discharge rate setting plate 23 is fitted onto the camshaft 16 and rotates at the same time, and has a pin 24 along the periphery of one side for setting the flow rate. A plurality of pin holes 25 to be inserted, protrusions 26 for regulating the maximum amount of metered water spouting and setting position during continuous water spouting, and pins 24a for regulating continuous water spouting are arranged respectively. When the required amount of hot water is constant, such as in a bathtub provided in a private room, the bathtub is configured so that it can be removed in advance and the amount of fixed amount of water spouted can be determined in advance. A projection 26a for setting the flow rate is provided protruding along the axial direction of the inner peripheral surface of the handle 27, and when the projection 26a is in the position shown in FIG. 4A, it is the starting position for determining the setting position. Note that a check valve mechanism 29 having a strainer 28 is disposed in the middle of the flow path 2. The main body 1a shown in FIG. 5 is another embodiment in which a water drain 30 for preventing freezing is provided in the middle of the flow path 2.

Now, when the handle 27 shown in FIG. 1 is operated clockwise, the cam 18 integrally connected to the handle 27 via the cam shaft 16 rotates in the same direction, and the protrusion 26a shown in FIG. 4A is rotated. It collides with the pin 24 and stops. During the clockwise rotation of the camshaft 16, the sliding gear 17 on the camshaft 16 is idling and is separated from the speed reduction mechanism 15 and is not transmitted with any transmission. Since the cam 18 on the camshaft 16 rotates in the same direction in conjunction with the above operation,
At the start, as shown in Figure 2, the relief groove 1 of the cam 18 is
The operating head 6 of the operating valve 4, which corresponded to 9, is the cam 18.
This action causes the operating valve 4 to open the valve seat port 5 and allow the water that had reached the flow path 2 to flow through the valve seat port 5 into the flow path 3. As the cam 18 rotates, when the cam 18 starts, the operating head 6a of the operating arm 20, which has been waiting at the operation stop position 22 shown in FIG. In order to be returned, the working end 30 of the other end of the actuating arm 20 is moved to a third position.
Since the pawl is separated from the correspondence relationship between the impeller 11 and the impeller 11 shown in FIG. Rotation is continuously given to the impeller 11 while reaching the target. The rotational force of the impeller 11 is transmitted to the speed reduction mechanism 15 shown in FIG. It is decelerated to a predetermined rotational speed while passing through each gear train and reaching the terminal gear 14a. The rotational force greatly reduced in this way is transmitted to the camshaft 16 via the sliding gear 17, so that the camshaft 16 and the coaxial cam 1
8 gradually begins to rotate in the return direction, during which the cam 18 and handle 27 rotate together with the camshaft 16 in the return direction, and the protrusion 26a of the handle 27 returns to the starting position, and the periphery of the cam 18 The working head 6 of the operating valve 4, which was in contact with the pressure, is released into the relief groove 19 of the cam 18, and the working head 6a of the operating arm 20, which was in contact with the working edge 21 of the cam 18, is released into the working edge 21 of the cam 18. 21a, releases the actuating arm 20, and locks the working end 30 between the impeller 11 at the same time. The rotation can be stopped at the same time. Also,
The main body 1a shown in FIG. 5 operates in a similar manner.

Since this invention has the above configuration, it has the following advantages.

(1) A machine housing incorporating a cam, a blade wheel, and a reduction mechanism is interposed in the secondary pressure side flow path, which is divided into two by sandwiching the valve seat opening, and the inlet and outlet of the machine housing are Since it is designed to communicate with the flow path, the fluid can flow through the flow path extremely smoothly, and there are no inconveniences such as flow restriction or uncertainty in valve opening/closing due to back pressure. can do.

(2) Since a plurality of pin holes are arranged on the camshaft to classify the fixed amount, it is convenient that the fixed amount can be freely selected by simply replacing the pin with the pin hole of the desired amount.

(3) The impeller, reduction mechanism, cam, setting board, etc. are well placed and incorporated into the machine casing, which not only makes effective use of the narrow interior of the main body, but also improves the interconnection and operation of each part. Can be done accurately.

(4) Compared to conventional models, the water metering function is housed in the machine casing, which greatly streamlines the assembly process and increases productivity.

[Brief explanation of drawings]

Figure 1 is a front sectional view of a single faucet equipped with the present invention;
Figure 2 is a side sectional view taken along line X-X in Figure 1;
Figure 3A is an expanded explanatory view of the speed reduction mechanism, B is a partial enlarged cross-sectional view of the machine casing and is an explanatory diagram showing the relationship between the impeller and the operating arm, and Figure 4A is the Y-Y diagram in Figure 1. An explanatory diagram showing the relationship between the setting board and the handle with some lines omitted, B is an explanatory diagram showing the expanded correspondence between the cam and the operating arm, and FIG. 5 is an explanatory diagram of another embodiment. FIG. 6 is an explanatory diagram of the prior art. Explanation of symbols of main parts, 1, 1a...Main body,
2, 3, 3a...flow path, 4...operating valve, 5...valve seat port, 7...machine casing, 8...inlet, 9...outlet, 1
0...Discharge pipe, 11...Blade wheel, 15...Deceleration mechanism, 16...Camshaft, 18...Cam, 23...Setting board, 24, 24a...Pin, 25...Pin hole,
26, 26a...Protrusion, 27...Handle.

Claims (1)

[Scope of utility model registration request] In a main body in which a flow path on the primary pressure side leading to the water supply source and a flow path on the secondary pressure side are communicated through a valve seat opening with an operating valve, there is a flow path between the valve seat opening and the flow path leading to the discharge pipe. , a machine casing communicating with the flow path through the inlet and the outlet is interposed, and within the machine casing there is provided a blade wheel between the inlet and the outlet, a speed reduction mechanism connected to the blade wheel, a cam connected to the speed reduction mechanism; Each camshaft has a setting board, and the setting board has a plurality of pin holes for replacing fixed quantity water stop pins and protrusions for setting positioning on the board surface of the setting board. A quantitative water stop device for a single faucet, characterized in that a protrusion that engages with the pin or protrusion is provided on the inside of a handle attached to the handle.