JPH0654150B2 - Automatic faucet device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automatic faucet device.

BACKGROUND ART Conventional automatic faucet devices include those using an automatic on / off valve and those using an automatic analog valve, but the former is not suitable for kitchen work because the amount of water cannot be adjusted.
There was a problem that it could not be used during a power outage. Further, in the latter, there is a problem that the control system becomes complicated, the cost becomes high, the skill is required for the operation, and like the former, it cannot be used at the time of power failure.

In addition, there is a complex faucet consisting of an automatic valve and a manual valve in consideration of a power failure, but it has a drawback that the structure is complicated and it cannot be opened and closed manually, and vice versa. Furthermore, it is possible to open automatically and adjust the opening degree manually, but there was also the problem that it was discontinuous and not smooth.

Further, in the case of the structure in which the automatic drive means and the manual drive means are connected, there is a problem that the automatic drive means becomes a load and manual operation becomes heavy.

[Object of the Invention] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to have a single valve portion, which enables manual operation and automatic operation to be performed independently, and also enables manual operation. To provide a light automatic faucet device.

DISCLOSURE OF THE INVENTION Embodiment 1 As shown in FIGS. 1 and 2, in this embodiment, a stand pipe 2 is integrally provided so as to be orthogonal to a part of a pipe 1.
A drive shaft 3 is movably arranged in the up and down direction, a tip of a manual lever 4 is attached to an upper end of the drive shaft 3, and an amount of water (hot water) flowing through a pipe 1 is further provided in an intermediate part. The valve body 5 to be adjusted is fixed. Further, cam followers 6a and 6b are provided on the lower end side surface of the drive shaft 3 penetrating the valve body 5 downward and the side surface of the intermediate portion, respectively. The manual lever 4 has its tip raised to the vertical pipe 2.
By engaging between the ribs 7 provided on the upper inner wall of the, the other end can be rotated in the vertical direction with this engaging portion as a fulcrum. At the predetermined height position of the drive shaft 3 between the cam followers 6a, 6b, the rotation center of the cam body 8 provided at the tip of the output shaft m of the gad motor M capable of forward and reverse rotation is arranged. The cam body 8 is composed of a substantially elliptical shape with an eccentric rotation center, and the tip of the cam body 8 on the major axis side pushes the lower end of the upper cam follower 6b to the uppermost point (top dead center). 5 moves into the vertical pipe 2 above the pipe 1 to move the valve body 5 to about 1 /
The valve body 5 is located in the pipe 1 at a position where the upper end of the lower cam follower 6a is pushed down to the lowest point (bottom dead center) by the tip of the long diameter side which is the engagement surface of the cam body 8 in the 2 open state. The predetermined height position is set so that the flow path is fully closed. That is, in the case of the automatic faucet driven by the gad motor M, about 1/2 opening is the maximum opening of the valve body 5. Further, as shown in FIG. 1, the cam body 8 is in the horizontal position and the drive shaft 3 is manually operated.
When the valve body 5 is moved upward and the valve body 5 is fully opened, the cam follower 6b moved upward is prevented from engaging with the cam body 8. That is, the neutral section is provided. First
Figure 9a, 9b bearing combined seal, 10 is a free joint, SW ₁ to SW ₃ are home position, the position for the control operation of the control circuit of Gyadomota M stop position, the bottom dead center position respectively detected and It is a limit switch that gives a detection signal.

FIG. 3 shows a circuit example of the control system of the gad motor M. In the figure, S ₁ is an automatic faucet opening switch, S ₂ is an automatic faucet closing switch, and 11 is limit switches SW _{1 to} SW _3.
And a control circuit for controlling the rotation of the gad motor M based on signals from the opening switch S ₁ and the closing switch S ₂ .

Operation First, the case of automatically opening and closing will be described. Fig. 4
(a) shows the case where the valve body 5 is fully closed and the cam body 8 is at the origin position. When the opening switch S ₁ is turned on in this state, the control circuit 11 rotates the gad motor M to rotate the cam body 8 in the direction indicated by the arrow. Therefore, when the cam body 8 rotates by a certain angle, the cam body 8 engages with the upper cam follower 6b and pushes the cam follower 6b upward. In response to this pushing up, the drive shaft 3 moves upward, the valve body 5 is moved into the upper stand pipe 2, and the flow path of the pipe 1 is opened. And Fig. 4
As shown in (b), when the top dead center is reached and the cam body 8 further rotates, the engagement between the cam body 8 and the cam follower 6b is released, the drive shaft 3 stops moving at that position, and the valve body 5 Holds 1/2 open. The cam body 8 further rotates and reaches the horizontal position shown in FIG. 4 (c), which is rotated 180 degrees from the origin position. When the cam body 8 pushes the limit switch SW ₂ at this position, the control circuit 11 immediately stops the rotation of the gad motor M. Then, when the closing switch S ₂ is turned on, the control circuit 11 further rotates the gad motor M from the stop position. By this rotation, the cam body 8 is engaged with the lower cam follower 6a moving upward and pushes the cam follower 6a downward. Then, when the bottom dead center shown in FIG. 4 (d) is reached, the valve body 5 descends into the pipe 1 to fully close the flow path. At the same time, the limit switch SW ₃ is driven by the cam follower 6a, and the control circuit 11 detects the passage of the bottom dead center, and further rotates the gad motor M to rotate the cam body 8. When the cam body 8 rotates to the position shown in FIG. 4 (e) and the limit SW ₁ is driven, the control circuit 11 stops the rotation of the gad motor M.

Now, the case of opening and closing only by manual operation will be described. In this case, at the origin position shown in Fig. 5 (a), the manual lever 4
When the free end of is driven upward with a finger, the drive shaft 3 moves upward and moves the valve element 5 into the upper stand tube 2 according to the amount of movement to open the flow path. Here, even when the drive shaft 3 moves to a position where the valve body 5 completely opens and contacts the bearing 9a, the lower cam follower 6a does not contact the cam body 8 and is independent as shown in FIG. 5 (b). It can be operated with a light operating force. Then, in manually closing the opened valve body 5, it is only necessary to push down the free end of the manual lever 4 as shown in FIG. 5 (c).

Next, a case where the valve body 5 is opened manually and automatically closed will be described. FIGS. 6 (a) and 6 (b) correspond to FIGS. 5 (a) and 5 (b), and FIG. 6 (b) shows a state in which the valve body 5 is manually opened, and at this time, the cam follower 6a there is a limit switch SW ₃ is in the undriven state away from the limit switch SW _3.
When the closing switch S ₂ is turned on here, the limit switch SW ₂ is in the non-driving state, and the control circuit 11 causes the cam motor 8 to rotate the gad motor M counterclockwise as shown by an arrow in FIG. 6 (c). Rotate in the direction of movement. Therefore, the cam body 8 is engaged with the cam follower 6a to push down the cam follower 6a and move the drive shaft 3 downward. Therefore, the valve body 5 moves into the pipe 1 and closes the flow path. Then, when the cam body 8 which has passed the bottom dead center moves to the stop position and drives the limit switch SW ₂ , the control circuit 11 immediately reverses the gad motor M to the origin position shown in FIG. 6 (d). To rotate. In the above operation, the cam body 8 is automatically closed.
The rotation direction of the valve is set to the counterclockwise direction. When the flow path is manually opened by a small amount, the clockwise rotation causes the cam body 8 to push the upper cam follower 6b upward to temporarily open the valve body 5. This is to avoid the inconvenience of increasing.

The above operation is the case where the automatic closing is performed after the manual opening. Conversely, when the manual opening is performed after the automatic opening, the operation is performed as follows. That is, as shown in FIGS. 7 (a) and 7 (b), when the valve body 5 is automatically opened and the cam body 8 is stopped at the stop position, the manual lever 4 is moved as shown in FIG. 7 (c). depressing the drive shaft 3 closes the flow path of the pipe 1 at the valve body 5 moves downward to drive the limit switch SW ₃ in the lower end of the cam follower 6a simultaneously. When the limit switch SW ₃ is driven while the limit switch SW ₂ is being driven, the control circuit 11 rotates the gad motor M in the clockwise direction as shown in FIG. 7 (d) to move the cam body 8 to the origin position. It will be restored.

As described above, in the present embodiment, the closing and opening can be performed either automatically or manually, and each can be performed independently.

Embodiment 2 This embodiment uses a push-pull solenoid 12 as shown in FIG. 8. In this case, a T-shaped engaging portion 13 is provided at the lower end of the drive shaft 3 for driving a push-pull solenoid 12.
Is engaged with the U-shaped engaging body 15 provided on the upper part of the above, and in the figure, the distance between the lower engaging surface of the engaging body 15 and the lower surface of the engaging portion 13 when the valve body 5 is closed The difference B is the engaging body 1
The origin position is set at a position smaller than the difference A in distance between the upper engaging surface of No. 5 and the upper surface of the engaging portion 13, and the push-pull solenoid 12 is driven during automatic opening to move the drive rod 14 upward by the distance B first. After moving and engaging the engaging body 15 and the engaging portion 13, the drive shaft 3 is pushed upward and moved by a distance obtained by subtracting the distance B from the push stroke of the solenoid. After that, the drive rod 14 is lowered to the same position as the original position. When the drive shaft 3 is manually pushed down in this state, the state shown in the drawing is obtained. Further, in the case of automatic closing, the drive rod 14 is further lowered from the stop position and the drive shaft 3
Is lowered to close the flow path with the valve body 5, and then the drive rod 14 is moved upward to return to the original position. Of course, the flow path can be fully opened by manually moving the drive shaft 3 upward by a distance A in the figure, and manual or automatic closing can be performed at that position. In other words, in this embodiment, the distance A is manual,
A neutral section is secured in which the drive shaft 3 can be automatically and independently moved.

Further, the distance B is made smaller than the distance A because when the solenoids having the same push and pull moving distances are used for the opening, about 1/2 of the opening is performed without being fully opened.

Embodiment 3 In this embodiment, an electric cylinder 16 is used. As shown in FIG. 9, a protrusion 17 protruding from the side surface of the drive shaft 3 is opened in a cylindrical body 20 provided at the tip of the cylinder 19. It is engaged with the long hole 18 provided. The operation is basically the same as that of the second embodiment, and only the neutral section A is secured. FIG. 10 shows the operation of the tubular body 20 during the automatic operation of this embodiment. When the automatic opening signal is input, the electric cylinder 16 is driven and the cylinder 19 is driven upward, so that the tubular body 20 is shown in FIG. Moving upward from the position shown, the lower end of the long hole 18 engages with the protrusion 17 and moves to the position X where the valve body 5 opens, and then returns to the origin (stop) position Y, and then the signal of automatic closing. The electric cylinder 16 is driven when
9 is driven downward, the upper end of the long hole 18 of the tubular body 20 engages with the protrusion 17 and is pushed downward to close the valve body 5 at a position Z.
After the lower end of the tubular body 20 has been moved to, the cylinder 19 is driven upward to move the tubular body 20 to the position shown in FIG.

The control circuits of Embodiments 2 and 3 are basically the same as the circuit of FIG. 3, and the limit switches may be provided at the origin (stop) position, the top dead center, and the bottom dead center, respectively.

[Effects of the Invention] The present invention is configured as described above and is provided on the drive shaft to open and close the flow path by the constant movement of the drive shaft, and the valve body connected to the drive shaft to open and close the valve body via the drive shaft. The drive shaft is interlocked with the manual lever and the engaging means that engages with and engages with the drive shaft after moving a certain neutral section from the standby point with respect to the drive shaft when inputting a signal of automatic closing or automatic opening And the automatic opening / closing means for moving the drive shaft and moving the engagement means to the standby point after the drive shaft is moved a certain amount, the standby point for the automatic opening / closing drive can always be in the neutral position, Therefore, even if a power failure or a failure occurs in the automatic opening / closing means, the valve body can be opened / closed by the manual lever without switching, and the manual opening / closing operation is lightened because the automatic opening / closing means is not applied as a load. But Since it is used for both automatic and manual operation, the structure is simple and the cost can be reduced.Furthermore, the flow rate can be adjusted manually, making it suitable for kitchen work.In addition, it can be opened manually, closed automatically or vice versa. You can also freely adjust the fine flow rate, and the user can arbitrarily select the operation such as when the hand is dirty or blocked, and the operation can be arbitrarily selected, and when it is automatic, it is linked to the movement of the drive shaft Since the manual lever also moves, it is possible to know the degree of opening of the valve body simply by looking at the state of the manual lever, which has the effect that there is no need for special display means for indicating the degree of opening. The range in which the drive shaft is moved is set larger than the range in which the drive shaft is automatically moved by the engaging means, and the valve body is not fully opened when the engaging means is automatically opened. Therefore, when the valve body is automatically opened, it does not fully open, so water does not come out too violently, water spattering etc. does not occur, and the effect that the water is not wasted is there.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention, FIG. 2 is a side view in which a part of an essential part of the same is omitted, FIG. 3 is a schematic circuit configuration diagram of the same as above, and FIGS. 8 is a configuration diagram of a second embodiment of the present invention, FIG. 9 is a configuration diagram of a third embodiment of the present invention, FIG. 10 is an operation explanatory diagram of the same, 1 is a pipe, 2 Is a vertical pipe, 3 is a drive shaft, 4 is a manual lever, 5 is a valve body, 6a and 6b are cam followers, 8 is a cam body, 11 is a control circuit, 12 is a push-pull solenoid, 13 is an engaging portion, 1
5 is an engaging body, 16 is an electric cylinder, 17 is a protrusion, 18 is a long hole, 19 is a cylinder, 20 is a cylinder, and M is a gad motor.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Ishigaki 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Yoshihisa Nakajima, 1048, Kadoma, Kadoma, Osaka Prefecture (72) Inventor Shuji Kagaya 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Shinji Kanabayashi 1048, Kadoma, Kadoma City, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Katsuya Nagai, Kadoma, Osaka Prefecture 1048, Kadoma, Ichimaji, Matsushita Electric Works, Ltd. (56) References JP-A-58-225284 (JP, A) JP-A-49-45427 (JP, A) JP-A-59-195274 (JP, U)

Claims (4)

[Claims] 1. A valve body provided on a drive shaft for opening and closing a flow path by a constant movement of the drive shaft, a manual lever connected to the drive shaft for driving the valve body to open and close through the drive shaft, and an automatic closing or automatic closing. When an opening signal is input, the drive shaft is interlocked with the drive shaft via an engaging means that engages with the drive shaft after moving a certain neutral section from the standby point with respect to the drive shaft, and the drive shaft is also moved constantly. An automatic opening / closing means for moving the rear engagement means to the standby point is provided, and a range in which the drive shaft is manually moved by the manual lever is set to be larger than a range in which the drive shaft is automatically moved by the engagement means, An automatic faucet device, characterized in that when the valve body is automatically opened by the engaging means, the valve body is not fully opened. 2. A cam follower is provided at a lower part of a vertically moving drive shaft at a certain distance in the vertical direction, and a cam follower is pushed down by a tip of a long diameter of a cam body which is rotated by a gad motor due to an eccentric center of rotation. The automatic faucet device according to claim 1, further comprising a coupling means, wherein a position where the tip of the long diameter of the cam body is perpendicular to the drive shaft is a standby point. 3. An engaging portion is provided at a lower end of a vertically moving drive shaft, and an engaging surface is vertically driven by a push-pull solenoid to push up the engaging portion when moving upward and push down the engaging portion when moving downward. The engaging member is provided, and a neutral section having a constant distance is provided between the waiting point of the engaging member and the position of the engaging portion of the drive shaft in the state where the flow path is closed by the valve member. The automatic faucet device according to claim 1. 4. A vertically elongated slot formed in a side surface of an electric cylinder so that a cylindrical body into which a lower end portion of a vertically moving drive shaft is inserted can be vertically driven. At the standby point, the protrusion protruding from the lower end side surface of the drive shaft is engaged with the lower end of the elongated hole when the cylinder moves upward, and the protrusion is pushed down at the upper end of the elongated hole when the cylinder moves downward. A neutral section having a constant distance is provided between the upper end of the elongated hole of the cylindrical body and the position of the protrusion of the drive shaft in a state where the flow path is closed by the valve body. The automatic faucet device according to item 1.