JP7128563B2 - Switchgear and piping systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to an opening/closing device for opening and closing a pipe in a piping system such as an agricultural water supply pipe.

2. Description of the Related Art Conventionally, as this type of opening and closing device, for example, a configuration described in Patent Document 1 below is known. The piping device includes a support member arranged above the pipe, a motor supported by the support member, and extending downward from the support member and rotating based on the rotational force of the motor to move the pipe up and down. and a shaft for opening and closing.

JP 2017-193914 A

However, in the conventional opening/closing device, when the shaft body moves up and down, the relative vertical positional relationship between the supporting member or the motor and the shaft body changes. Therefore, in order to reduce the size of the switchgear, for example, it is necessary to avoid interference between the support member, the motor, and the shaft, which may limit the design.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and an object of the present invention is to increase the degree of freedom in design while achieving miniaturization.

In order to solve the above problems, the present invention proposes the following means.
An opening/closing device according to the present invention is a device for opening and closing a pipe, comprising: a support member arranged above the pipe; a motor supported by the support member; a shaft that rotates based on the rotational force of a motor to move up and down to open and close the tube, wherein the support member is fixed to the shaft in a vertical direction, and the shaft moves up and down. moves up and down in conjunction with

The support member moves vertically in conjunction with the vertical movement of the shaft. Therefore, when the shaft moves up and down, it is possible to maintain the same vertical positional relationship between the support member, the motor, and the shaft. Therefore, when the shaft moves up and down, for example, unexpected interference between the supporting member or the motor and the shaft can be avoided. As a result, the degree of freedom in design can be increased while miniaturizing the switchgear. For example, even if it is necessary to ensure the length (stroke) of vertical movement of the shaft in order to open and close a pipe, the length of vertical movement of the shaft can be reduced while miniaturizing the opening/closing device. can be secured. Therefore, for example, by applying the present invention to an aspect that could not be realized in the prior art because the opening/closing device became too large in order to ensure the length of vertical movement of the shaft body, the opening/closing device can be used. can be made as small as feasible.

A case that houses the support member and the motor, and a control section connected to the motor, the control section includes a first control section that is arranged inside the case and a control section that is arranged outside the case. and a second control unit.

The control also includes a second control located outside the case. Therefore, it becomes possible to reduce the size of the first control unit arranged in the case, and a small case can be adopted.

A cylindrical case that accommodates the support member and the motor and is fixed to the pipe; A rolling element that rolls on the inner peripheral surface may be further provided, and the shaft may be integrally rotatably fixed to the support member.

The motor may be directly connected to the shaft, and the shaft may be rotatable with respect to the support member.

The guide includes a post in which a groove extending in the vertical direction is formed, and an intermediate member that engages with the groove and is fixed to the support member. The intermediate member includes a first portion fixed to the support member and the groove. A second part that is arranged inside and engages a part of the support that sandwiches the opening in the circumferential direction with respect to the central axis of the support, and that connects the first part and the second part. and a third portion disposed within the opening, wherein the vertical size of the second portion may be greater than the width of the second portion.

The intermediate member may have a protrusion projecting from the second portion toward the bottom of the opening.

The width of the first portion may be greater than the width of the opening.

The vertical size of the first portion may be larger than the vertical size of the third portion.

A cylindrical case that accommodates the support member and the motor may be provided, and a holding member that supports an upper end portion of the support in a direction intersecting the vertical direction may be fixed to the case.

The motor and the strut are arranged with the shaft interposed therebetween in a plan view, the opening is formed on the outer surface of the strut on the side opposite to the shaft, and the first portion is the first portion. It may protrude downward from the three parts.

A piping system according to the present invention includes a piping structure including a pipe, and the opening and closing device for opening and closing the pipe.

The piping structure may further include a valve body arranged in the pipe to open and close the pipe, and the shaft body may move up and down to operate the valve body.

The shaft moves between a first position that restricts upward movement of the valve body and a second position that is located above the first position and permits upward movement of the valve body. It can move up and down.

The piping structure may be an agricultural water supply pipe or an agricultural drainage pipe.

The piping structure may further include a spindle that rotates to move up and down to open and close the tube, and may further include a connecting member that connects the shaft and the spindle.

According to the present invention, it is possible to increase the degree of freedom in design while achieving miniaturization.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole structural example of the water management system which concerns on 1st Embodiment of this invention. It is a side view which shows the water tap and drain cock in the field shown in FIG. Fig. 3 is a longitudinal sectional view showing the water tap shown in Fig. 2, showing a state in which the shaft is positioned at the first position; 4 is a cross-sectional view of the hydrant shown in FIG. 3; FIG. Fig. 3 is a block diagram showing the hydrant shown in Fig. 2; Fig. 3 is a vertical cross-sectional view of the water tap shown in Fig. 2, showing a state in which the shaft is located at the second position; It is a vertical cross-sectional view of a water tap that constitutes a water management system according to a second embodiment of the present invention. FIG. 8 is a longitudinal sectional view showing a modification of the hydrant shown in FIG. 7; FIG. 9 is a plan view showing a main part of a modification of the hydrant shown in FIG. 8; It is a figure which shows the overall structural example of the water management system which concerns on 3rd Embodiment of this invention. It is a side view which shows the feed cock and drain cock in the agricultural field of the water management system which concerns on 4th Embodiment of this invention. It is sectional drawing which carried out planar view which shows the principal part of the hydrant which concerns on 5th Embodiment of this invention. 13 is a cross-sectional view taken along a cutting line A1-A1 in FIG. 12; FIG. It is a longitudinal cross-sectional view of the same hydrant. It is a cross-sectional view of the water tap. It is sectional drawing which carried out planar view which shows the principal part when a motor rotates in the water faucet. FIG. 17 is a cross-sectional view taken along a cutting line A2-A2 in FIG. 16; It is a longitudinal cross-sectional view of the principal part of the hydrant which concerns on the modification of 5th Embodiment of this invention. It is sectional drawing which carried out planar view which shows the principal part of the hydrant which concerns on 6th Embodiment of this invention. It is a longitudinal cross-sectional view of the principal part of the water tap. It is a longitudinal cross-sectional view of the principal part of the hydrant which concerns on 7th Embodiment of this invention. FIG. 22 is a cross-sectional plan view showing a connection structure between the shaft and the connection member of the water tap shown in FIG. 21; 23 is a perspective view of the connecting member shown in FIG. 22; FIG. FIG. 24 is a perspective view showing a detent piece provided on the connecting member shown in FIG. 23; It is a longitudinal cross-sectional view of the principal part of the hydrant which concerns on 8th Embodiment of this invention. FIG. 26 is a perspective view showing a main part of the hydrant shown in FIG. 25; FIG. 27 is a perspective expanded view showing a support and a moving member of the hydrant shown in FIG. 26;

(First embodiment)
A water management system according to a first embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the water management system of this embodiment manages water supply and drainage in a plurality of fields. FIG. 1 shows an example in which the water management system manages two fields FM-1 and FM-2. Fields FM-1 and FM-2 in this embodiment are paddy fields, for example. In paddy fields, irrigation and drainage (water supply and drainage) are carried out so that the water level is appropriate according to the season of rice cultivation.

In the following description, fields FM-1 and FM-2 will be referred to as field FM unless otherwise distinguished. The number of field FMs to be managed by the water management system of this embodiment is not particularly limited.

As shown in FIGS. 1 and 2, the field FM-1 is provided with a water tap 100-1. A water tap 100-1 supplies irrigation water sent from a farm pond FP (irrigation water supply source) via a pipeline PL to a field FM-1. The water tap 100-1 is equipped with a plug portion (valve) that opens and closes along the water flow path until the irrigation water sent from the farm pond FP is discharged to the field FM-1. The water tap 100-1 adjusts the amount of water supplied from the farm pond FP to the farm field FM-1.

A drain plug 200-1 is provided in the field FM-1. The drain plug 200-1 drains the water accumulated in the farm field FM-1. The drain plug 200-1 has a plug portion (valve) that opens and closes in a water flow path leading to discharge of water drawn from the farm field FM-1 to, for example, a pipeline. Drainage plug 200-1 regulates the amount of drainage.

Field FM-2 has a larger area than field FM-1. In field FM-2, two water taps 100-2A and 100-2B and two drain taps 200-2A and 200-2B are provided.

In the following description, the water taps 100-2A and 100-2B of the field FM-2 will be referred to as the water taps 100-2 unless otherwise distinguished. Further, when the water taps 100-1, 100-2A, and 100-2B are not particularly distinguished, they are referred to as the water tap 100 (piping structure).
Further, in the following description, the drain plugs 200-2A and 200-2B of the field FM-2 will be referred to as the drain plug 200-2 unless otherwise distinguished. Also, when the drain plugs 200-1, 200-2A, and 200-2B are not particularly distinguished, they are referred to as the drain plug 200 (piping structure).

The water management system of this embodiment further includes a gateway GW. The gateway GW is connected to a network NT, and a water management server 500 (an example of a water management device) is connected to the network NT.

The water tap 100 and the drain tap 200 of each field FM in this embodiment each have a network communication function corresponding to a wireless LAN. As a result, the water tap 100 and drain tap 200 of each field FM can communicate with the water management server 500 via the network NT from the gateway GW.

Each field FM is watered (irrigated) as follows. The water supplied to the farm field FM is first drawn from the river RV to the farm pond FP via a pipeline, for example, and stored in the farm pond FP. A farm pond FP is a pond that stores water for irrigation.
The water stored in the farm pond FP is pumped up by a pump (not shown) and supplied to the pipeline PL by being pressurized. In the figure, the pipeline PL is branched into three routes, which are connected to water taps 100-1, 100-2A, and 100-2B provided in fields FM-1 and FM-2, respectively. As a result, the water sent from the farm pond FP via the pipeline PL reaches the hydrants 100-1, 100-2A, and 100-2B. At this time, if the plug portions of the water taps 100-1, 100-2A, and 100-2B are open, the water taps 100-1, 100-2A, and 100-2B are connected to the fields FM-1 and FM-2, respectively. water is supplied to the area and irrigation is carried out.

The field master terminal 600-1 is a network terminal device used by the field master (farmer) of the field FM-1. The farm field master terminal 600-1 is, for example, a personal computer, a smart phone, a tablet terminal, etc. owned by the farm field master of the farm field FM-1. Similarly, the field master terminal 600-2 is a network terminal device used by the field master of field FM-2. In the following description, the field main terminals 600-1 and 600-2 will be referred to as the field main terminal 600 unless otherwise distinguished.
The field master controls each water tap 100 and drain tap 200 by operating the field master terminal 600-1, for example.

As shown in FIGS. 2 to 5, each water tap 100 and each drain tap 200 is provided with an opening/closing device 40 (automatic water tap opening/closing device). The opening/closing device 40 opens and closes each water tap 100 or each drain cock 200 .
Below, the water tap 100 (piping system) provided with the opening/closing device 40 is illustrated and demonstrated. Before explaining the opening/closing device 40, the water tap 100 will be explained first.

FIG. 3 exemplifies an on-off valve using a floating shutoff ball as the water tap 100 . The water supply faucet 100 includes a water supply pipe 63, a discharge pipe 64 having a valve opening 75, a cover 65 covering the upper side of the discharge pipe 64, and a stop cock ball 67 ( and a spindle 69 vertically communicating with the discharge pipe 64 .

The water supply pipe 63 is a pipe member that is led from the pipeline PL to a predetermined position in the cultivated area. The water supply pipe 63 is raised substantially perpendicular to the ground.
The discharge pipe 64 has a truncated tubular shape. The discharge pipe 64 is attached to the upper end of the water supply pipe 63 . The inside of the discharge pipe 64 and the inside of the water supply pipe 63 are in communication. The discharge pipe 64 has a smaller diameter than the water supply pipe 63 .

The valve opening 75 is provided along the entire circumference of the lower inner edge of the side wall of the discharge pipe 64 . The valve opening 75 forms a seat surface with which the outer peripheral surface of the stop cock ball 67 can contact in a liquid-tight manner.
A through hole 73 is formed in the center of the top surface of the discharge pipe 64 so as to protrude downward from the top surface. A female thread (not shown) is formed on the inner peripheral surface of the through hole 73 .

A plurality of discharge holes 76 are provided on the top surface of the discharge pipe 64 . When the valve opening 75 is opened, the water in the water supply pipe 63 flows into the discharge pipe 64 and is discharged to the outside of the water tap 100 through the discharge hole 76 .
The cover 65 is a bottomless cylindrical member that covers the upper portion of the discharge pipe 64 . A top surface of the cover 65 is fixed to the upper end portion of the discharge pipe 64 . The cover 65 expands in diameter from the top surface to the side wall so as to form an umbrella shape.

The stopcock ball 67 opens and closes the water supply pipe 63 . The stopcock ball 67 is a so-called ball valve. The water stopcock ball 67 is disposed upstream of the valve opening 75 and is movable up and down within the water supply pipe 63 so as to be able to float and move up and down due to the water pressure in the water supply pipe 63 . A radially projecting guide portion 77 is provided on the inner peripheral surface of the water supply pipe 63 . A plurality of guide portions 77 are arranged at intervals along the circumferential direction. The stopcock ball 67 moves vertically along a plurality of guide portions 77 .

The diameter of the stopcock ball 67 is larger than the inner diameter of the valve opening 75 and smaller than the inner diameter of the water supply pipe 63 . The stopcock ball 67 has buoyancy with respect to water.
The stopcock ball 67 does not necessarily have to be formed in a spherical shape as long as it is formed so that a spherical surface having a diameter larger than the diameter of the valve opening 75 is arranged on the upper side. For example, the stop cock ball 67 may be provided with a leg that tapers toward the lower side of the stop cock ball 67 . The stopcock ball 67 may have other known configurations.

The spindle 69 is the faucet body. The spindle 69 is inserted from the discharge pipe 64 into the through hole 73 , extends upward through the cover 65 , and is connected to the opening/closing device 40 .
A male thread (not shown) is formed on the outer peripheral surface of the spindle 69 to be screwed into the female thread of the through hole 73 . Thereby, it is possible to move along the vertical direction (that is, the direction in which the water supply pipe 63 and the discharge pipe 64 extend) while maintaining the engagement state with the through hole 73 and the discharge pipe 64 .

As shown in FIG. 2 , the opening/closing device 40 includes a device body 41 and a control box 42 . The device body 41 is attached to the top of the water tap 100 . The control box 42 is arranged near the device main body 41 . The device main body 41 and the control box 42 are connected via wiring 43 .
As shown in FIGS. 3 and 4, the device main body 41 includes a support member 44, a motor 48, a driving wheel 45 (rolling element), a driven wheel 46, a shaft 70, and a case 47. there is

The support member 44 is arranged above the water supply pipe 63 . As shown in FIG. 4, the support member 44 is formed in a disc shape. The support member 44 is arranged coaxially with the spindle 69 .
As shown in FIG. 3, the motor 48 is supported by the support member 44. As shown in FIG. Motor 48 is fixed to support member 44 and is substantially immovable relative to support member 44 . The motor 48 is arranged on the upper surface of the support member 44 . As shown in FIG. 4 , the motor 48 is arranged on the outer periphery of the support member 44 . A rotating shaft 48 a of the motor 48 is parallel to the spindle 69 . The rotary shaft 48a protrudes upward from the motor 48. As shown in FIG. The rotating shaft 48a rotates the driving wheel 45. As shown in FIG.

As shown in FIG. 3, the drive wheels 45 are positioned above the motor 48 . A tire axis of the drive wheel 45 is parallel to the rotation axis 48a.
The driven wheel 46 is positioned above the support member 44 . The driven wheel 46 is rotatably supported by the support member 44 via a support shaft 44a. The support shaft 44 a protrudes upward from the support member 44 . A rotation axis 48 a of the support shaft 44 a is coaxial with the tire axis of the driven wheel 46 .
As shown in FIG. 4 , when the support member 44 is viewed from above, the drive wheel 45 and the driven wheel 46 are positioned on opposite sides of the support member 44 with the axis C of the support member 44 interposed therebetween. A portion of each of the drive wheel 45 and the driven wheel 46 protrudes outward from the support member 44 .

As shown in FIG. 3, the shaft 70 extends downward from the support member 44 . A cross section (cross section) of the shaft 70 is formed in a square shape (polygonal shape). The shaft 70 is inserted into the upper portion of the spindle 69 from above. The shaft 70 rotates together with the spindle 69 by engaging the outer peripheral surface of the shaft 70 with the inner peripheral surface of the spindle 69 . The shaft 70 is fixed to the support member 44 so as to be integrally rotatable. Therefore, when the support member 44 rotates, the shaft 70 and the spindle 69 rotate together. The support member 44 is supported by the spindle 69 via the shaft 70 . The support member 44 is integrally rotatable with the shaft 70 .

Case 47 accommodates support member 44 , motor 48 , driving wheels 45 and driven wheels 46 . Case 47 is fixed to water supply pipe 63 . The case 47 includes a bottom plate 47a and a case body 47b. The bottom plate 47 a is fixed on the top plate of the cover 65 . The case main body 47b is formed in a truncated tubular shape. A peripheral wall portion of the case main body 47b is formed in a cylindrical shape. The driving wheel 45 and the driven wheel 46 are in contact with the inner peripheral surface of the case main body 47b from the inside in the radial direction. In order to prevent water from entering the case body 47b from the outside, it is preferable that the case body 47b does not have a through hole or a cut surface. .

As shown in FIG. 4, in the above configuration, when the motor 48 rotates the drive wheel 45, the drive wheel 45 rolls on the inner peripheral surface of the case 47 (case main body 47b). At this time, the driven wheel 46 also rolls on the inner peripheral surface of the case 47 . As a result of these, the support member 44 rotates with respect to the case 47 . This causes the shaft 70 and the spindle 69 to rotate.

As shown in FIG. 3 , the rotational motion applied to the spindle 69 is converted into vertical motion of the spindle 69 as the male thread of the spindle 69 and the female thread of the through hole 73 are screwed together. At this time, the spindle 69 is pulled up or down along the vertical direction (that is, the extending direction of the water supply pipe 63 and the discharge pipe 64).
When the water tap 100 is closed, that is, when water is not supplied from the water tap 100, the spindle 69 is pulled up as shown in FIG. At this time, the stop cock ball 67 comes into close contact with the valve opening 75 of the discharge pipe 64 due to its buoyancy, closing the space between the valve opening 75 and the stop cock ball 67 .

When the water tap 100 is opened, that is, when water is supplied from the water tap 100, the spindle 69 is pulled down as shown in FIG. At this time, the stopcock ball 67 is pushed down from the position of the valve opening 75 by the spindle 69 against the buoyancy. As a result, the contact state between the stop cock ball 67 and the valve opening 75 is released. Water passes through a gap (so-called throat portion) between the stopcock ball 67 and the valve opening 75 , passes through the valve opening 75 and the discharge pipe 64 , and is ejected upward from the discharge hole 76 . After that, the cover 65 changes the direction of the water flow downward so that the water is discharged toward the ground.

As described above, in the present embodiment, the support member 44 is fixed to the shaft 70 in the vertical direction, and the support member 44 moves vertically in conjunction with the vertical movement of the shaft 70 .
Further, the shaft body 70 rotates based on the rotational force of the motor 48 to move up and down to open and close the water supply pipe 63 . In other words, the shaft 70 operates the stop cock ball 67 by moving up and down. The shaft 70 moves up and down between a first position as shown in FIG. 3 and a second position as shown in FIG. As shown in FIG. 3, the shaft 70 at the first position restricts upward movement of the stop cock ball 67 . As shown in FIG. 6, the shaft 70 at the second position is located above the first position and allows the stop cock ball 67 to move upward.

As shown in FIG. 5, the switchgear 40 includes a control section 80 connected to the motor 48, a power supply section 90 for supplying power to the control section 80, and various modules 50 connected to the control section 80. , is further provided.
The control unit 80 is connected to the motor 48 and controls the above operation of the device body 41 . The control unit 80 includes a first control unit 81 arranged inside the case 47 (apparatus body 41) and a second control unit 82 arranged outside the case 47 (control box 42). Both of these controllers 81 and 82 are connected via the wiring 43 .

The first control unit 81 includes a motor drive circuit 83 that controls driving of the motor 48 and a current detection circuit 84 that detects the current supplied to the motor 48 .
The second control unit 82 includes a microcomputer 85, an RTC 86 (real time clock) connected to the microcomputer 85, and a low voltage detection circuit 87 that detects the voltage of the current supplied from the battery 92 to the microcomputer 85. . The microcomputer 85 is connected to the first control section 81 (motor drive circuit 83, current detection circuit 84).

The power supply unit 90 includes a solar panel 91, a battery 92 (battery, storage battery, rechargeable battery) to which power is supplied from the solar panel 91, an overvoltage control circuit 93 arranged between the solar panel 91 and the battery 92, It has A solar panel 91 is attached to the control box 42 . A battery 92 (with a voltage of about 6 V, for example) and an overvoltage control circuit 93 are housed in the device main body 41 (inside the case 47). A battery 92 supplies power to the microcomputer 85 via a DC/DC converter 94 .

As various modules 50, a wireless module 51, a display LED 52, an operation switch 53, a water level sensor 54, a pressure gauge 55, and a valve position detector 56 are provided.
The wireless module 51 includes a long-range wireless module 51a (eg, 920 MHz wireless module) and a short-range wireless module 51b (eg, Bluetooth (registered trademark) wireless module). The long-distance wireless module 51a is connected to the network NT via the gateway GW, for example.

The water level sensor 54 is for controlling a sensor module installed in the field FM and measuring the water level of the field FM to measure the water level.
The pressure gauge 55 is for controlling the sensor module that measures the water pressure of the pipeline PL and measuring the pressure.
The valve position detection unit 56 measures the positions of the device main body 41 and the control box 42 by using the mobile terminal of the operator, the GPS function provided in the device main body 41 and the control box 42 , and the like.

Various sensors and various devices not described above may be electrically or physically connected to the control unit 80 . For example, if a supply device for fertilizers, agricultural chemicals, etc. is connected to the control unit 80, these fertilizers, agricultural chemicals, etc. can be reliably supplied to the cultivated area at the same time as or before or after the water supply by the switchgear 40. .

As described above, according to the opening/closing device 40 according to the present embodiment, the support member 44 moves vertically in conjunction with the vertical movement of the shaft 70 . Therefore, when the shaft body 70 moves up and down, the vertical positional relationship between the support member 44 or the motor 48 and the shaft body 70 can be maintained at the same level. Therefore, when the shaft 70 moves up and down, for example, unexpected interference between the support member 44 or the motor 48 and the shaft 70 can be avoided. As a result, the opening/closing device 40 can be downsized, and the degree of freedom in design can be increased. For example, in order to open and close the water supply pipe 63 and the discharge pipe 64, even if it is necessary to secure the vertical movement length (hereinafter referred to as stroke) of the spindle 69, the size of the opening/closing device 40 can be reduced. , the stroke of the spindle 69 can be ensured. Therefore, for example, it is possible to reduce the size of the opening/closing device 40 to the extent that it can be realized, even in the case of the prior art, where the opening/closing device is too large in order to ensure the stroke of the spindle. can.

The controller 80 also includes a second controller 82 located outside the case 47 . Therefore, it is possible to reduce the size of the first control unit 81 arranged in the case 47, and a small case 47 can be adopted.

By the way, in this embodiment, as shown in FIG. In the illustrated example, a locking portion 47c is provided on the top wall of the case main body 47b. The wiring 43 is locked by the locking portion 47c in the process from the first control portion 81 to the outside of the device main body 41 (the outside of the case 47). In the process from the first control unit 81 to the outside of the device main body 41 (the outside of the case 47), the wiring 43 extends upward and is locked by the locking portion 47c (the top wall of the case 47), and then downward. and extends outside the case 47 through the bottom plate 47 a of the case 47 . Note that the first control unit 81 is supported by the support member 44 .
Since the wiring 43 is locked by the locking portion 47c in this way, it is possible to prevent the wiring 43 from being unintentionally entangled when the support member 44 is rotated. Moreover, since the case main body 47b is not provided with a through hole or a cut surface, watertightness can be improved.

(Second embodiment)
Next, a second embodiment according to the invention will be described with reference to FIG.
In the second embodiment, the same reference numerals are assigned to the same components as in the first embodiment, the description thereof is omitted, and only the different points will be described.

In the opening/closing device 40A according to this embodiment, the motor 48 is directly connected to the shaft 70 . In the illustrated example, the motor 48 is arranged on the axis C of the spindle 69 . A rotating shaft 48 a of the motor 48 protrudes downward from the motor 48 and is directly connected to the shaft 70 .
The shaft 70 is rotatable with respect to the support member 44 . The shaft 70 is provided with an annular flange 70a. The flange 70 a vertically sandwiches the support member 44 with the motor 48 .

The opening/closing device 40A further includes a guide 30 that guides the vertical movement of the support member 44. As shown in FIG. The guide 30 includes a plurality of (for example, four) struts 31 provided on the bottom plate 47 a of the case 47 . A plurality of struts 31 are provided around the axis C of the support member 44 . The strut 31 penetrates the support member 44 in the vertical direction. The support member 44 slides vertically along each support 31 .

When the motor 48 rotates forward, the shaft 70 and the spindle 69 rotate, and the motor 48 descends in conjunction with the spindle 69 . Then, the motor 48 pushes down the support member 44 and the support member 44 descends along the guide 30 .
On the other hand, the motor 48 rotates in the opposite direction, and the motor 48 moves upward in conjunction with the spindle 69 . Then, the flange 70 a pushes up the support member 44 and the support member 44 rises along the guide 30 .

(Modification of Second Embodiment)
It should be noted that the strut 31 does not have to pass through the support member 44 in the vertical direction like the opening/closing device 40A1 according to the modification shown in FIGS. 8 and 9 . In this opening/closing device 40A1, only one pillar 31 is provided, which is horizontally displaced with respect to the support member 44. As shown in FIG.

As shown in FIG. 9, the post 31 is formed with a guide groove (groove) 32 extending in the vertical direction.
The guide groove 32 is provided over the entire length of the support 31 in the vertical direction. A plurality of guide grooves 32 (four in the illustrated example) are provided at intervals in the circumferential direction with respect to the central axis of the support 31 . In the illustrated example, the support 31 is formed in a rectangular shape in plan view, and one guide groove 32 is provided on each of four surfaces (outer surfaces) of the support 31 .

The guide groove 32 has an opening 33 . The opening 33 is a portion of the guide groove 32 that opens outward in the radial direction with respect to the central axis of the support 31 . The circumferential size (opening width) of the opening 33 is smaller than the circumferential size of the portion of the guide groove 32 located radially inside the opening 33 . The guide groove 32 is formed in a dovetail shape.

The struts 31 function as guide rails for the support members 44 . The support member 44 moves along the guide groove 32 of the support 31 . In addition to the strut 31 , the guide 30 includes an intermediate member 34 extending from the support member 44 toward the strut 31 and a fixing member 38 fixing the intermediate member 34 to the support member 44 .

The intermediate member 34 includes a first portion 35 arranged on the support member 44, a second portion 36 arranged radially inside the opening 33 in the guide groove 32, the first portion 35 and the second portion. 36 and a third portion 37 positioned within the opening 33 . The third portion 37 is circumferentially smaller than the first portion 35 and the second portion 36 .
The fixing member 38 is configured by, for example, a combination of bolts and nuts. A securing member 38 secures the first portion 35 of the intermediate member 34 to the support member 44 .

According to the opening/closing device 40A1 according to this modified example, when the motor 48 rotates and the support member 44 is about to move up and down, the intermediate member 34 moves along the guide groove 32, thereby moving the support member 44 up and down. be guided to At this time, even if the intermediate member 34 tries to detach from the guide groove 32 in the radial direction, the detachment is regulated by the second portion 36 of the intermediate member 34 engaging with the peripheral portion of the opening 33 of the support 31. .

Note that although only one support 31 is provided in the opening/closing device 40A1 according to this modification, two or more support 31 may be provided. For example, when two columns 31 are provided, the two columns 31 may be arranged so as to sandwich the support member 44 in plan view (top view) of the support member 44 .

In addition, in the opening/closing devices 40A and 40A1 according to the second embodiment and its modification, the motor 48 is arranged coaxially with the shaft 70, but if the rotational force of the motor 48 is transmitted to the shaft 70, this is not limited to For example, after the motor 48 is horizontally displaced with respect to the shaft 70 , a belt that transmits rotational force may be wound between the rotating shaft 48 a of the motor 48 and the shaft 70 .

(Third embodiment)
Next, a third embodiment according to the invention will be described with reference to FIG.
In the third embodiment, the same reference numerals are assigned to the same components as those in the first embodiment, the description thereof is omitted, and only the different points are described.

In the water management system according to this embodiment, the control boxes 42 of the opening/closing devices 40B are grouped for each field FM. That is, for example, in field FM-2, there are two water taps 100-2A and 100-2B, and one device main body 41 of the opening/closing device 40B is provided for each of the two water taps 100-2A and 100-2B. , there is one control box 42 in common for the two water taps 100-2A, 100-2B.

(Fourth embodiment)
Next, a fourth embodiment according to the invention will be described with reference to FIG.
In the fourth embodiment, the same reference numerals are assigned to the same components as in the first embodiment, the description thereof is omitted, and only the different points will be described.

In the water management system according to this embodiment, the opening/closing device 40C does not include the control box 42 . The control unit 80 includes only the first control unit 81, and all control functions are integrated within the apparatus main body 41. FIG. A solar panel 91 is arranged outside the device main body 41 . This solar panel 91 supplies power to a battery 92 inside the device body 41 .

(Fifth embodiment)
Next, a fifth embodiment according to the present invention will be described with reference to FIGS. 12 to 18. FIG. In addition, in FIG. 13, a part is shown instead of a cross section.
In addition, in the fifth embodiment, the same reference numerals are assigned to the same components as those in the modified example of the second embodiment, the description thereof is omitted, and only the different points are described.

As shown in FIGS. 12 and 13, in the water tap according to the present embodiment, the opening/closing device 40D includes a guide 110 instead of the guide 30 of the opening/closing device 40A1. The guide 110 includes a support 31 , an intermediate member 111 extending from the support member 44 toward the support 31 , and a fixing member 38 fixing the intermediate member 111 to the support member 44 .
A portion of the guide groove 32 located radially inward of the opening 33 with respect to the central axis of the column 31 is a groove interior 32a. The width of the opening 33 is smaller than the width of the groove interior 32a. The width referred to here means the length in the direction in contact with the circumferential direction with respect to the central axis of the support 31 in plan view. The struts 31 protrude from both circumferential ends of the groove interior 32a in the radial direction outside the groove interior 32a, thereby making the width of the opening 33 smaller than the width of the groove interior 32a. .

As shown in FIG. 13 , limit switches 120 are attached to the upper end and lower end of the column 31 . A known engaging portion 120 a provided in the limit switch 120 can be engaged at any position in the vertical direction of the guide groove 32 of the post 31 . The limit switch 120 is fixed to the column 31 by being pressed in the guide groove 32 in the circumferential direction by a set screw 121 that fits into the female screw hole 31 a of the column 31 .
After weakening the pressing force of the set screw 121 pressing the limit switch 120 and moving the limit switch 120 to a desired position in the vertical direction along the guide groove 32, the limit switch 120 is again pressed in the circumferential direction by the set screw 121. Thus, the vertical position of the limit switch 120 can be adjusted.
Each limit switch 120 detects whether the support member 44 approaches the limit switch 120, for example. Each limit switch 120 is connected to the microcomputer 85 of the second control section 82, for example. The detection result of each limit switch 120 is sent to the microcomputer 85 . The microcomputer 85 controls the motor 48 by the motor drive circuit 83 based on the detection result of each limit switch 120 .

As shown in FIGS. 12 and 13 , the intermediate member 111 is engaged with the guide groove 32 and fixed to the support member 44 . The intermediate member 111 includes a first portion 112 fixed to the support member 44, a second portion 113 arranged inside the groove 32a, and a third portion 114 connecting the first portion 112 and the second portion 113. , and a projection 115 projecting from the second portion 113 toward the bottom of the groove interior 32a.

Width L<b>1 of first portion 112 is greater than width L<b>2 of opening 33 . The first portions 112 protrude toward both sides of the opening 33 in the circumferential direction. The first portion 112 is fixed to the support member 44 by the fixing member 38 .
The second portion 113 is formed in a plate shape whose thickness direction is the direction connecting the column 31 and the support member 44 . A vertical dimension L3 of the second portion 113 is greater than a width L4 of the second portion 113 . That is, the second portion 113 is formed in a plate shape elongated in the vertical direction. The second portion 113 radially engages portions of the support 31 that sandwich the opening 33 in the circumferential direction.
The third portion 114 is positioned within the opening 33 . The vertical size L5 of the first portion 112 is larger than the vertical size L6 of the third portion 114 . The first portion 112 protrudes toward both sides in the vertical direction with respect to the third portion 114 .

The intermediate member 111 has a plurality of (two in this example) protrusions 115 . The plurality of protrusions 115 are arranged at intervals in the vertical direction. In this example, the width of the protrusion 115 is the same as the width of the second portion 113 , and the total vertical size of the plurality of protrusions 115 is smaller than the vertical size L3 of the second portion 113 .
The plurality of protrusions 115 are in contact with the bottom of the groove interior 32a.
The number of protrusions 115 included in intermediate member 111 is not limited, and may be one or three or more.

As shown in FIGS. 14 and 15, in this embodiment, the support member 44 is formed in an elliptical disk shape whose thickness direction is the vertical direction. The support member 44 is arranged along the horizontal plane.
The support member 44 has a length in the direction of the long axis (first direction) larger than that in the direction of the short axis (second direction) perpendicular to (intersecting) the long axis in plan view shown in FIG. 15 .
In the plan view shown in FIG. 15, the motor 48 and the strut 31 are arranged with the shaft 70 interposed therebetween. That is, the motor 48 is eccentric with respect to the shaft 70 .
The motor 48 is located at a first longitudinal end of the support member 44 and the strut 31 is located at a second end opposite the first longitudinal end of the support member 44 . is preferred.
A rotating shaft 48 a of the motor 48 is connected to the shaft 70 via a gearbox 122 . Gearbox 122 adjusts the torque (rotational speed) of shaft 70 .

In this example, the case 47 is formed in an elliptical cylindrical shape whose longitudinal direction is the longitudinal direction of the support member 44 .
As shown in FIGS. 14 and 15, a holding member 123 is fixed to the case 47 to support the upper end of the support 31 in a direction orthogonal (crossing) to the vertical direction. Note that in FIG. 15, the holding member 123 and the solar panel 91A, which will be described later, are indicated by two-dot chain lines.
The holding member 123 is formed in a rectangular tubular shape and extends in the vertical direction. The upper end of the holding member 123 is fixed to the top wall of the case main body 47b. The upper end of the strut 31 is arranged inside the holding member 123 .
A solar panel 91A is fixed on the top wall of the case main body 47b. The solar panel 91A is formed in a rectangular sheet plate shape in plan view. In this example, solar panel 91A is flexible. The solar panel 91A is fixed to the case main body 47b so that the long side of the solar panel 91A is along the longitudinal direction of the case 47. As shown in FIG. Since the case 47 is formed in an elliptical cylindrical shape in plan view, the solar panel 91A can be easily arranged on the case 47 .
The solar panel 91A supplies power to the battery 92 inside the device body 41 .

In the water tap configured as described above, when the motor drive circuit 83 of the first control unit 81 rotates the rotation shaft 48a of the motor 48, the support member 44 moves up and down. The second portion 113 of the intermediate member 111 fixed to the support member 44 moves vertically within the guide groove 32 of the post 31 . As shown in FIGS. 16 and 17, even if the support member 44 is tilted with respect to the horizontal plane at this time, the vertical dimension L5 of the first portion 112 is larger than the vertical dimension L6 of the third portion 114. Since it is large, the portion of the first portion 112 that protrudes in the vertical direction more than the third portion 114 engages with the outer peripheral surface of the post 31 . Furthermore, since the width L1 of the first portion 112 is larger than the width L2 of the opening 33 , the portion of the first portion 112 that protrudes in the circumferential direction beyond the opening 33 engages the outer peripheral surface of the support 31 .

As described above, according to the opening/closing device 40D according to the present embodiment, it is possible to increase the degree of freedom in design while achieving miniaturization.
Furthermore, since the vertical size L3 of the second portion 113 is larger than the width L4 of the second portion 113, the upper end and the lower end of the second portion 113 when the second portion 113 rotates around the axis along the circumferential direction. radial displacement increases. The second portion 113 with a large displacement interferes with the strut 31 and becomes difficult to rotate around the axis along the circumferential direction, and it is possible to suppress the intermediate member 111 from rattling around the axis along the circumferential direction with respect to the strut 31. .

Intermediate member 111 includes protrusion 115 . As a result, the contact area between the bottom of the groove interior 32a and the intermediate member 111 is reduced, and the intermediate member 111 can be easily moved in the vertical direction within the groove interior 32a.
Width L<b>1 of first portion 112 is greater than width L<b>2 of opening 33 . Therefore, when the first portion 112 rotates about the axis extending in the vertical direction, the first portion 112 radially engages portions of the support 31 that sandwich the opening 33 in the circumferential direction. Therefore, it is possible to prevent the intermediate member 111 from rattling around the vertical axis with respect to the column 31 due to the torque generated by the motor 48 or the like. It is possible to prevent the intermediate member 111 from being caught on the strut 31 when the support member 44 is twisted around the vertical axis.

The vertical size L5 of the first portion 112 is larger than the vertical size L6 of the third portion 114 . As a result, when the first portion 112 rotates around the axis along the circumferential direction, the first portion 112 radially engages portions of the support 31 that sandwich the opening 33 in the circumferential direction. Therefore, it is possible to prevent the intermediate member 111 from rattling around the axis along the circumferential direction with respect to the strut 31 . When the intermediate member 111 moves vertically with respect to the support 31, it is possible to prevent the intermediate member 111 from being caught on the support 31. - 特許庁
A holding member 123 supports the upper end of the support 31 . Therefore, it is possible to prevent the upper end portion of the support 31 from being displaced in the direction along the horizontal plane.

Note that in the present embodiment, the intermediate member 111 does not have to include the convex portion 115 .
The width of the first portion 112 may be less than or equal to the width of the opening 33 . The vertical dimension of the first portion 112 may be less than or equal to the vertical dimension of the third portion 114 .
The case 47 may not have the holding member 123 . The motor 48 and the strut 31 may be arranged on the same side with respect to the shaft 70 .

Note that, in this embodiment, the support member 130 may include a first support 131 and a second support 132 as in an opening/closing device 40D1 shown in FIG.
The first support 131 has a first support piece 134 fixed to the first portion 112 of the intermediate member 111 by the fixing member 38 and a second support piece 135 extending downward from the end of the first support piece 134 . , and a third support piece 136 extending along the horizontal plane from the lower end of the second support piece 135 .
The second support piece 135 is displaced from the limit switch 120 along the horizontal plane. The third support piece 136 extends from the second support piece 135 toward the center of the case 47 . The first support 131 is formed in a Z shape as a whole.
An end of the second support 132 is supported by a third support piece 136 . The first support 131 and the second support 132 are made of metal plates or the like. A motor 48 and the like (not shown) are arranged on the second support 132 .
In the opening/closing device 40D1 configured as described above, for example, the intermediate member 111 and the support member 130 fixed to each other can be lowered until the intermediate member 111 contacts the upper surface of the limit switch 120 from above. The portion where the motor 48 is mounted can be lowered to near the bottom plate 47a of the case 47, and the opening/closing device 40D1 can be downsized in the vertical direction.

(Sixth embodiment)
Next, a sixth embodiment according to the present invention will be described with reference to FIGS. 19 and 20. FIG.
In addition, in the sixth embodiment, the same reference numerals are assigned to the same components as those of the fifth embodiment, the description thereof is omitted, and only the different points are described.

As shown in FIGS. 19 and 20, in the faucet according to the present embodiment, the opening/closing device 40E differs from the opening/closing device 40D in the configuration of the support member 44 and the arrangement of the intermediate member 111 and the fixing member 38 .
A through hole 44b is formed in the support member 44 on the longitudinal axis. The through hole 44b penetrates the support member 44 in the vertical direction. The motor 48 and the through hole 44b are arranged with the shaft 70 therebetween in plan view shown in FIG.
The strut 31 passes through the through hole 44b of the support member 44. As shown in FIG. The motor 48 and the strut 31 are arranged with the shaft 70 therebetween in plan view. As shown in FIGS. 19 and 20, the column 31 has a surface 31b1, which is one of the four surfaces 31b, facing the shaft 70, and a surface 31b2, which is the other one of the four surfaces 31b. It is arranged so as to be located on the opposite side of 70 .

The intermediate member 111 is engaged with the guide groove 32 formed in the surface 31b2. The opening 33 of the guide groove 32 is formed on the surface 31b2 of the post 31 opposite to the shaft 70. As shown in FIG. The fixing member 38 is arranged on the side opposite to the shaft 70 with respect to the intermediate member 111 and fixes the intermediate member 111 to the support member 44 .
As shown in FIG. 20, the first portion 112 of the intermediate member 111 protrudes downward and upward from the third portion 114, respectively. Note that the first portion 112 does not have to protrude upwards beyond the third portion 114 .

According to the opening/closing device 40E according to the present embodiment, it is possible to increase the degree of freedom in design while achieving miniaturization.
Furthermore, when the support member 44 moves upward, the protruding portion 112a of the first portion 112 that protrudes downward from the third portion 114 extends to the portion of the support 31 that sandwiches the opening 33 in the circumferential direction. Contact. Since the projecting portion 112a projecting in the direction opposite to the support member 44 moving upward contacts the portion of the opening 33, the force acting between the projecting portion 112a and the portion of the opening 33 is relatively small. The projecting portion 112a is less likely to interfere with the support member 44 that is held down and moves upward.
In addition, since the distance between the shaft body 70 and the protruding portion 112a is greater than when the intermediate member 111 is engaged with the guide groove 32 formed on the surface 31b1, the portion between the protruding portion 112a and the opening 33 is increased. The force acting between and is further reduced.

(Seventh embodiment)
Next, a seventh embodiment according to the present invention will be described with reference to FIGS. 21 to 24. FIG.
In the seventh embodiment, the same reference numerals are assigned to the same components as those of the fifth embodiment, the description thereof is omitted, and only the different points are described.

As shown in FIGS. 21 to 24, in the opening/closing device 40F according to this embodiment, the shaft 70 protrudes downward from the gearbox 122. As shown in FIGS. The shaft 70 extends downward through the support member 44 . Rotation of the rotating shaft 48 a of the motor 48 is transmitted to the shaft 70 via the gear box 122 . As shown in FIG. 22, the lower end portion 23d of the shaft 70 has a D-shaped cross section in which a portion in the circumferential direction is cut flat.

In this embodiment, the spindle 69 and the shaft 70 are connected via a connecting member 24 extending vertically. As shown in FIGS. 22 and 23, the connecting member 24 is rectangular (square) in plan view and has a rectangular tubular shape extending in the vertical direction. A lower end portion 23 d of the shaft 70 is inserted into the upper end portion of the connecting member 24 . As shown in FIG. 21, the upper end portion 69a of the spindle 69 is inserted into the lower end portion of the connecting member 24. As shown in FIG.

As shown in FIGS. 22 to 24 , a detent piece 25 can be attached to the upper end of the connecting member 24 . As shown in FIG. 24, the anti-rotation piece 25 includes a strip-shaped outer piece 25a extending in the vertical direction, an inner piece 25b extending substantially parallel to the outer piece 25a with a gap therebetween, and upper ends and inner sides of the outer piece 25a. A connection portion 25c that connects the upper end of the piece 25b is integrally provided. The vertical length of the inner piece 25b is longer than the vertical length of the outer piece 25a. The distance between the outer piece 25a and the inner piece 25b is approximately the same as the thickness of one side surface 24a of the connecting member 24. As shown in FIG. As shown in FIGS. 22 and 23 , the anti-rotation piece 25 is attached to the upper end portion of the connecting member 24 by inserting the inner piece 25 b inside the connecting member 24 . In this state, the anti-rotation piece 25 sandwiches one side surface portion 24a of the connecting member 24 with the inner piece 25b and the outer piece 25a. The connecting portion 25c of the anti-rotation piece 25 hits the upper end of the side portion 24a from above.

As shown in FIG. 22, the lower end portion 23d of the shaft 70 is inserted inside the upper end portion of the connecting member 24 to which the anti-rotation piece 25 is attached. A lower end portion 23 d of the shaft body 70 having a D-shaped cross section abuts against the inner piece 25 b of the anti-rotation piece 25 at a planarly cut portion. Thereby, the shaft 70 and the connecting member 24 are connected so as not to rotate about the central axis of the shaft 70 .

As shown in FIG. 21, the upper end portion 69a of the spindle 69 is formed with a detent portion (not shown) that is rectangular in plan view and can be attached to the lower end portion of the connecting member 24 having a square tubular shape. By inserting the anti-rotation portion into the lower end portion of the connecting member 24 from below, the upper end portion 69 a of the spindle 69 and the lower end portion of the connecting member 24 are connected so as not to rotate about the central axis of the spindle 69 .

Between the upper end portion 69a of the spindle 69 and the connecting member 24, and between the lower end portion 23d of the shaft 70 and the connecting member 24, there is play of about 0.3 mm or more and 1 mm or less, for example. As a result, even if there is a slight horizontal misalignment (axis misalignment) between the upper end portion 69a of the spindle 69 and the lower end portion 23d of the shaft 70, the misalignment can be absorbed. .

As described above, according to the opening/closing device 40F according to the present embodiment, the spindle 69 and the shaft 70 are connected via the connecting member 24 extending in the vertical direction. Therefore, by adjusting the length (size in the vertical direction) of the connecting member 24, the height position of the support member 44 (motor 48) can be adjusted and the stroke of the spindle 69 can be secured.
For example, the height position of the motor 48 can be increased by lengthening the connecting member 24 . As a result, unexpected submersion of the motor 48 can be suppressed.
Also, if the connecting member 24 is shortened, the stroke of the spindle 69 can be ensured. In other words, even within the case 47 of the same size, the vertical movement range (the distance between the limit switches 120) can be widened. As a result, the opening/closing device 40F can be suitably applied to a form requiring a stroke of the spindle 69 (for example, a gate system, a large valve, or the like).

(Eighth embodiment)
Next, an eighth embodiment according to the present invention will be described with reference to FIGS. 25 to 27. FIG.
In the eighth embodiment, the same reference numerals are assigned to the same components as those of the seventh embodiment, the description thereof is omitted, and only the different points are described.

As shown in FIG. 25, in the opening/closing device 40G according to this embodiment, the guide 110 includes a support 31 and brackets 21b and 21c. In the illustrated example, the lower end of the support 31 is fixed to the bottom surface (bottom plate 47a) of the case 47 via the first bracket 21c, and the upper end of the support 31 is fixed to the side surface of the case 47 via the second bracket 21b. It is fixed to the case body 47b). As shown in FIGS. 26 and 27, the post 31 has groove-like recesses 21a extending in the vertical direction at a plurality of locations in the circumferential direction. The lower end portion of the column 31 and the bottom plate 47a of the case 47 are firmly fixed. Here, when rotating the spindle 69 to move it up and down, an external force is generated that twists the column 31 with the spindle 69 as a starting point. The fixing strength between the lower end portion of the column 31 and the bottom plate 47a of the case 47 is strong enough to withstand the above-described reaction force (twisting motion) against the external force.

The support member 44 includes a moving member 22a that can move vertically along the column 31, and a motor support bracket 22b that supports the motor 48. As shown in FIG.

As shown in FIG. 27, the moving member 22a has a cylindrical shape extending in the vertical direction, and includes an outer member 22c made of metal such as an aluminum alloy, and an inner member 22d provided inside the outer member 22c. . The inner member 22d is made of a material such as a synthetic resin having a lower coefficient of friction than the outer member 22c. Protrusions 22e that mesh with the recesses 21a of the struts 31 are formed at a plurality of positions in the circumferential direction on the inner peripheral surface of the inner member 22d. The support member 44 is provided so as to be vertically slidable along the column 31 in a state in which the protrusions 22e are engaged with the recesses 21a so as to restrain the rotation of the column 31 in the circumferential direction around the central axis. ing.

As shown in FIG. 26, the motor support bracket 22b is made of metal and fixed to the outer member 22c of the moving member 22a. The motor support bracket 22b includes a bracket intermediate portion 22f extending downward along the moving member 22a within the case 47, a motor support portion 22g extending from the lower end of the bracket intermediate portion 22f toward the center portion in the width direction of the case 47, integrally has A motor 48 (gearbox 122) is fixed on the motor support portion 22g. The shaft 70 extends downward through the motor support portion 22g of the motor support bracket 22b.

The support member 44 is provided with a position detection piece 22h that protrudes toward the side surface of the case 47 . As shown in FIG. 25, a pair of limit switches 120 are provided on the side surface of the case 47 at positions spaced apart by a predetermined distance in the vertical direction. A limit switch 120 is adjacent to the post 31 . The distance from limit switch 120 to post 31 is shorter than the distance from limit switch 120 to motor 48 . The limit switch 120 sets the upper limit position and the lower limit position of the movement range of the support member 44 that vertically moves along the column 31 . When the position detecting piece 22 h of the support member 44 contacts the limit switch 120 , an electric signal is output to the microcomputer 85 .

The limit switch 120 is detachably attached to the case 47 . The case 47 is provided with an attachment member 45c1. The attachment member 45c1 extends vertically. The limit switch 120 can be detachably attached to any height position of the attachment member 45c1. Thereby, the upper limit position and the lower limit position detected by the limit switch 120 can be arbitrarily changed.

The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

In the above-described embodiment, the faucet 100 using the floating stopcock ball 67 is exemplified and explained as an object to which the switchgears 40, 40A, 40A1, 40B, 40C, 40D, 40E, 40F, and 40G are attached. The hydrant 100 is not limited to the floating type. For example, the water tap 100 may be a gate-type water supply device that opens and closes the irrigation channel by moving up and down a plate member. The hydrant 100 may be configured with other configurations.

In the above embodiments, the opening/closing devices 40, 40A, 40A1, 40B, 40C, 40D, 40E, 40F, and 40G are applied to agricultural water supply pipes and agricultural drainage pipes, but the present invention is not limited thereto. . For example, it is not limited to agricultural use, and may be applied to pipes other than water supply and drainage pipes.

Although the spindle 69 is connected to the support member 44 via the shaft 70 in the above embodiment, the present invention is not limited to this. For example, the spindle 69 may be directly connected to the support member 44 . In other words, the spindle 69 may have the function of the shaft 70 as well.

In addition, it is possible to appropriately replace the constituent elements in the above-described embodiment with well-known constituent elements without departing from the gist of the present invention, and the modifications described above may be combined as appropriate.

30, 110 guide 31 support 31b surface (outer surface)
32 guide groove (groove)
32a Groove interior 33 Opening 34, 111 Intermediate member 40, 40A, 40A1, 40B, 40C, 40D, 40D1, 40E Switching device 44 Supporting member 45 Drive wheel 47 Case 48 Motor 63 Water supply pipe (pipe)
70 Shaft 80 Control Unit 81 First Control Unit 82 Second Control Unit 100 Water faucet (piping structure)
112 first portion 113 second portion 114 third portion 115 convex portion 123 holding member 200 drain plug (piping structure)

Claims (8)

A device for opening and closing a pipe,
a support member disposed above the tube;
a motor supported by the support member;
a shaft that extends downward from the support member and rotates based on the rotational force of the motor to move up and down to open and close the tube;
a case that houses the support member and the motor;
a control unit connected to the motor,
The support member is vertically fixed to the shaft and vertically moves in conjunction with the vertical movement of the shaft,
The opening/closing device, wherein the control unit includes a first control unit arranged inside the case and a second control unit arranged outside the case. The switchgear according to claim 1, wherein the first control section and the second control section are connected via wiring. The case includes a truncated cylindrical case body,
3. The opening/closing device according to claim 2, wherein the wiring extends from below the case main body to the outside of the case. The case includes a bottom plate,
4. The opening/closing device according to claim 3, wherein the wiring passes through the bottom plate and extends to the outside of the case. 5. The opening and closing device according to claim 4, wherein the case main body is an injection-molded body in which a top surface and side surfaces are integrally formed. The opening/closing device includes a device body and a control box,
the apparatus body includes the support member, the motor, the shaft, and the case;
The control box is arranged outside the device body,
The first control unit is arranged in the device main body,
The opening/closing device according to any one of claims 1 to 5, wherein the second control section is arranged in the control box. a piping structure comprising a pipe;
and the opening and closing device according to any one of claims 1 to 6 for opening and closing the pipe. The piping structure further comprises a valve body arranged in the pipe for opening and closing the pipe,
The piping system according to claim 7, wherein the shaft moves up and down to operate the valve body.

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