Water stop valve opening and closing device

Abstract

To provide a stop cock opening and closing device with a simple mechanism.SOLUTION: A stop cock opening and closing device 100A includes: a motor 15; an inner socket 50 attached to an output shaft 16 to which rotation force generated in the motor 15 is transmitted and rotating around the output shaft; and a hollow outer socket 60 having a cross-sectional shape in correspondence with a cross-sectional shape of the inner socket 50, having at least one opening end, and directly or indirectly coupled to a stop cock 90 at an end that is not the opening end. The inner socket 50 is inserted into the opening end of the outer socket 60, and the outer socket 60 is moved to the direction of the output shaft 16 while being rotated by the rotation force received from the inner socket 50.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a stop valve opening and closing device that opens and closes a stop valve. [Background technology]

[0002] There is a device that connects to a stop valve installed on farmland or the like and opens and closes the valve using the power of a motor. Specifically, a stop valve opening and closing device is known in which the position of a motor follows the up and down movement (pulling out / pushing in) that accompanies opening and closing of the stop valve, and the motor applies a rotational force to the stop valve via multiple gears (see, for example, Patent Document 1). Remote control of such a stop valve opening and closing device makes it possible to efficiently manage water intake for vast farmland. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7125768 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional stop valve opening and closing devices tend to have a complex structure because the position of the motor must follow the movement of the stop valve that accompanies opening and closing.

[0005] The present invention has been made in view of the above circumstances, and has as its object to simplify the structure. [Means for solving the problem]

[0006] The present invention provides a stop valve opening and closing device having a motor, an inner socket portion attached to an output shaft to which rotational force generated by the motor is transmitted and which rotates around the output shaft, and a hollow outer socket portion having a cross-sectional shape corresponding to the cross-sectional shape of the inner socket portion, at least one of which is an open end and which is directly or indirectly connected to a stop valve at the end other than the open end, wherein the inner socket portion is inserted from the open end and the outer socket portion moves in the direction of the output shaft while rotating due to the rotational force received from the inner socket portion.

[0007] In a preferred embodiment, the motor comprises a shaft portion, a handle portion attached to the shaft portion for rotating the shaft portion, and an intermediate gear connected to the shaft portion, and by moving the handle portion in the axial direction of the shaft portion, the intermediate gear is selectively fixed to either a first position where the rotational force generated by the motor is transmitted to the output shaft via the intermediate gear, or a second position where the rotational force is not transmitted to the output shaft.

[0008] In another preferred aspect, the outer socket portion is hollow and approximately cylindrical with both ends open, and further includes an attachment portion for fastening to the stop valve, which is inserted from the end of the outer socket portion other than the end into which the inner socket portion is inserted.

[0009] In another preferred embodiment, the motor, the inner socket portion, and the outer socket portion are arranged so that the central axes of the output shaft, the inner socket portion, and the outer socket portion coincide with each other.

[0010] In another preferred embodiment, the intermediate gear is always engaged with a first gear for transmitting rotational force to the output shaft, while in the first position it is engaged with a second gear attached to a rotating shaft directly connected to the motor, and in the second position it is not engaged with the second gear. [Effects of the Invention]

[0011] According to the present invention, a stop valve opening and closing device with a simple mechanism is realized. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a front view showing the configuration of a stop valve opening and closing device according to a first embodiment of the present invention. [Figure 2] 4 is a cross-sectional view of an inner socket portion and an outer socket portion of the stop valve opening and closing device. FIG. [Figure 3] FIG. 2 is a front view showing the configuration of a rotational force transmission system of the stop valve opening and closing device. [Figure 4] FIG. 2 is a diagram illustrating the operation of the embodiment. [Figure 5] FIG. 4 is a front view showing the configuration of a stop valve opening and closing device according to a second embodiment of the present invention. [Figure 6] FIG. 2 is a plan view of a gear disposed on a top plate according to the embodiment. [Figure 7] FIG. 2 is a diagram illustrating the operation of the embodiment. [Figure 8] FIG. 2 is a diagram illustrating the operation of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0014] First Embodiment Fig. 1 is a front view showing the configuration of a stop valve opening and closing device 100A according to a first embodiment of the present invention. The stop valve opening and closing device 100A is an electrically operated stop valve opening and closing device. As shown in Fig. 1, the stop valve opening and closing device 100A has a top plate 10, a movable plate 20, and a base plate 30, each of which is plate-shaped.

[0015] A plurality of cylindrical pillars 40 are erected at intervals in the horizontal direction between the top plate 10 and the base plate 30. The upper ends of the pillars 40 are fixed to the top plate 10 by screws 41 protruding downward from the underside of the top plate 10, and the lower ends of the pillars 40 are fixed to the base plate 30 by screws 42 protruding upward from the upper surface of the base plate 30.

[0016] The movable plate 20 has through holes 43 formed therein for inserting the pillar portions 40. The pillar portions 40 are inserted into the through holes 43, and the movable plate 20 is disposed between the top plate 10 and the base plate 30. The movable plate 20 is guided by the pillar portions 40 and is therefore movable in the vertical direction.

[0017] A motor 15, which is a drive source for opening and closing the stop valve 90, is disposed on the upper surface of the top plate 10. The motor 15 applies a rotational force to a cylindrical output shaft 16 that protrudes from the lower surface of the motor 15. The motor 15 can be controlled, for example, by a control panel that allows the user to turn the motor on and off, or by a wireless communication device that allows remote operation. The method for controlling the motor 15 is not directly related to the mechanism of the present invention, so a description thereof will be omitted.

[0018] The inner socket portion 50 is, for example, a rectangular prism-shaped member that protrudes downward from the underside of the top plate 10. The output shaft 16 that passes through the top plate 10 is fixed to the upper end of the inner socket portion 50 by a fixing means such as a screw formed on the output shaft 16. The inner socket portion 50 functions as a member that transmits the rotational force applied from the output shaft 16.

[0019] The outer socket portion 60 has a cross-sectional shape corresponding to the cross-sectional shape of the inner socket portion 50, and is a hollow outer socket portion with at least one open end, the end other than the open end being directly or indirectly coupled to the stop valve 90. The inner socket portion 50 is inserted into the outer socket portion 60 from the open end (the upper end in FIG. 1 ), and the outer socket portion 60 moves in the direction of the output shaft 16 while rotating due to the rotational force received from the inner socket portion 50.

[0020] Fig. 2 is a cross-sectional view taken along line Ia-Ia' in Fig. 1, illustrating the cross-sectional shapes of the inner socket portion 50 and the outer socket portion 60. In the example of Fig. 2, the cross-sectional shape of the inner socket portion 50 is square, and the cross-sectional shape of the outer socket portion 60 is the shape of a square frame that fits the inner socket portion 50. The cross-sectional shape of the outer socket portion 60 does not need to be the same as the cross-sectional shape of the inner socket portion 50, as long as they correspond to each other.

[0021] Here, "the cross-sectional shapes correspond" means that the inner socket portion 50 can be inserted into the outer socket portion 60, and that when the inner socket portion 50 rotates within the outer socket portion 60, the outer wall of the inner socket portion 50 is pressed against the inner wall of the outer socket portion 60. The square cross-sectional shape of the inner socket portion 50 and the outer socket portion 60 is merely an example, and any other polygonal shape other than a perfect circle, such as a regular hexagon or a regular octagon, may be used. In short, the distance from the center of rotation of the inner socket portion 50 to the outer wall changes with rotation, and it is sufficient that at least the maximum value of this distance is greater than the minimum value of the distance from the central axis of the outer socket portion 60 to the inner wall.

[0022] The direction of the output shaft 16 is vertical (up and down) in Fig. 1. The outer socket portion 60 and the stop valve 90 can be connected by any method, but in this embodiment, the outer socket portion 60 is connected to the stop valve 90 via an attachment portion 70. This attachment portion 70 is a member for fastening to the stop valve 90, and is inserted into the end of the outer socket portion 60 other than the end into which the inner socket portion 50 is inserted.

[0023] In this embodiment, a substantially cylindrical support portion 80 is disposed on the upper surface of the base plate 30 at a position facing the output shaft 16. A through hole is formed in the center of this support portion 80, and a cylindrical attachment portion 70 with a stop valve 90 fixed below is inserted into this through hole. The attachment portion 70 is inserted into a through hole (not shown) formed in the movable plate 20, and is rotatably supported by the movable plate 20. The movable plate 20 moves up and down in conjunction with the attachment portion 70.

[0024] 3 is a front view showing the configuration of the rotational force transmission system of the stop valve opening / closing device 100A. In this embodiment, the motor 15, inner socket 50, outer socket 60, and attachment 70 are arranged so that the central axes Z of the output shaft 16, inner socket 50, outer socket 60, and attachment 70 are aligned.

[0025] The inner socket portion 50 has a thickened upper end portion, and the lower end of the output shaft 16 is inserted into a cylindrical hole formed in this upper end portion. Furthermore, female threaded holes 51 that reach the output shaft 16 are formed in two places on the outer periphery of the upper end portion of the inner socket portion 50. A male hexagonal socket screw (not shown) is screwed into this female threaded hole 51, and the tip of the screw is pressed against the output shaft 16, thereby fixing the upper end portion of the inner socket portion 50 to the output shaft 16.

[0026] The lower end portion of the inner socket portion 50 is inserted from the upper end of the outer socket portion 60. In this embodiment, the outer socket portion 60 is a member shaped like a quadrangular tube (more specifically, a square tube) with both ends open. The lower end portion of the outer socket portion 60 is connected to the stop valve 90 via an attachment portion 70.

[0027] In this embodiment, the attachment part 70 is composed of an upper attachment part 71 having a thin rectangular tube shape (specifically, a square tube shape) that is inserted into the lower end of the outer socket part 60, and a lower attachment part 72 having a thick cylindrical shape that is connected to the lower end of the upper attachment part 71.

[0028] The upper attachment part 71 has a hole formed at its lower end that extends upward, and a protrusion 72a protruding from the upper end of the lower attachment part 72 is inserted into this hole. Furthermore, through holes 71a that reach the protrusions 72a are formed in two radially opposite ends of the outer peripheral surface (cylindrical outer peripheral surface) near the lower end of the upper attachment part 71. Furthermore, through holes 72b that communicate with the through holes 71a and pass through the protrusions 72a are formed in the protrusions 72a. In this embodiment, two spring pins 73 are inserted into the two through holes 71a and 72b, thereby fixing the upper attachment part 71 to the lower attachment part 72.

[0029] The lower attachment part 72 has a hole formed at its lower end that extends upward, into which a protrusion 91 protruding from the upper end of the stop valve 90 is inserted. In addition, female threaded holes 72c that reach the protrusions 91 are formed in two places on the outer periphery of the lower end part of the attachment part 72. A male hexagonal socket head screw (not shown) is screwed into this female threaded hole 72c, and the tip of the screw is pressed against the protrusion 91, thereby fixing the stop valve 90 to the lower attachment part 72.

[0030] The stop cock 90 and attachment part 70 are inserted into a through hole 81 formed in the support part 80. Here, the stop cock 90 is a cylindrical member, and a male thread is formed on its outer peripheral surface 92. Furthermore, a female thread is formed on the inner peripheral surface of the through hole 81 of the support part 80, which meshes with the male thread on the outer peripheral surface of the stop cock 90. ​​The stop cock 90 can move up and down within the through hole 81 by rotating relative to the support part 80.

[0031] 4 is a diagram showing an example of operation of this embodiment. In this embodiment, when a rotational force is applied from the motor 15 to the output shaft 16, the inner socket portion 50 rotates due to the rotation of the output shaft 16. Here, when the stop valve 90 is opened, a counterclockwise rotational force is applied to the inner socket portion 50.

[0032] When the inner socket portion 50 rotates, the outer wall of the inner socket portion 50 is pressed against the inner wall of the outer socket portion 60, causing the outer socket portion 60 to rotate around the output shaft 16. This rotational force of the outer socket portion 60 is imparted to the stop valve 90 via the attachment portion 70.

[0033] When the stop valve 90 is rotated counterclockwise, the stop valve 90 is guided by the female thread of the through hole 81 of the support part 80 and rises within the through hole 81. As a result, the stop valve 90 opens.

[0034] At this time, the attachment portion 70, the movable plate 20, and the outer socket portion 60 rise in conjunction with the rise of the stopcock 90. ​​Here, the inner socket portion 50 is inserted into the outer socket portion 60, but the outer socket portion 60 can rise freely without being hindered by the inner socket portion 50.

[0035] When closing the stop valve 90, a clockwise rotational force is applied to the inner socket portion 50. In this case, the stop valve 90 rotates clockwise, and is guided by the female thread of the through-hole 81 of the support portion 80, and moves down within the through-hole 81. This closes the stop valve 90.

[0036] At this time, the attachment portion 70, the movable plate 20, and the outer socket portion 60 descend in conjunction with the descent of the stopcock 90. ​​In this case as well, the outer socket portion 60 can descend freely without being hindered by the inner socket portion 50.

[0037] In this way, the relative position of the outer socket portion 60 to the inner socket portion 50 absorbs the change in the vertical position of the stop valve 90 that occurs when the stop valve 90 is opened or closed, allowing other mechanisms including the motor 15 to be fixed. As described above, the stop valve opening and closing device 100A according to this embodiment has a simple mechanism, which reduces manufacturing costs, and has fewer moving parts, which improves reliability.

[0038] Second Embodiment Figure 5 is a front view showing the configuration of a stop valve opening and closing device 100B according to a second embodiment of the present invention. The stop valve opening and closing device 100B is a combined electric and manual stop valve opening and closing device. In Figure 5, parts corresponding to those in the first embodiment (Figure 1) are designated by the same reference numerals, and their description will be omitted.

[0039] In this embodiment, a motor 15 is disposed on the lower surface of the top plate 10. Gears 201 to 204 are disposed on the upper surface of the top plate 10. Fig. 6 is a plan view showing the configuration of these gears. Note that the top plate 10 is provided with bearings that rotatably support the gears 201 to 204, but these are not shown in the figure.

[0040] Gear 201 is an output gear whose rotation axis is the output shaft 16. Gear 202 is a first gear that meshes with gear 201 and transmits rotational force to output shaft 16. Gear 203 is an intermediate gear that meshes with gear 202, which is the first gear. Gear 204 is a second gear whose rotation axis is directly connected to motor 15.

[0041] Shaft 231 is coupled to the rotation axis of gear 203, which is an intermediate gear. Handle 232 is attached to the tip of shaft 231 so that a person can apply a rotational force. In this embodiment, by moving handle 232 in the axial direction of shaft 231, gear 203, which is an intermediate gear, moves in the axial direction of shaft 231.

[0042] 7 and 8 are side views of gears 201 to 204 and illustrate an example of operation of this embodiment. In this embodiment, by pushing in handle portion 232, a user can fix the intermediate gear to a first position P1 where the rotational force generated by motor 15 is transmitted to output shaft 16 via gear 203, which is an intermediate gear (see FIG. 8). In this first position P1, gear 203, which is an intermediate gear, meshes with gear 204, which is a second gear attached to a rotation shaft directly connected to motor 15. In addition, by lifting handle portion 232 in the state of FIG. 8, a user can fix the intermediate gear to a second position P2 where the rotational force applied from handle portion 232 to shaft portion 231 is transmitted to output shaft 16 via gear 203, which is an intermediate gear (see FIG. 7). In this second position P2, gear 203, which is an intermediate gear, does not mesh with gear 204, which is a second gear.

[0043] The operations of the inner socket portion 50, the outer socket portion 60, the attachment portion 70, the support portion 80 and the stop valve 90 are the same as those in the first embodiment.

[0044] According to this embodiment, by pushing in the handle portion 232, an electric mode can be set in which the rotational force of the rotating shaft of the motor 115 is applied to the stop valve 90. Here, if the stop valve is a device installed in outdoor farmland to control the supply and discharge of water to the farmland for growing crops, it is necessary to anticipate the possibility of malfunction due to the environment in which it is constantly exposed to rain and wind. According to this embodiment, even if, for example, a malfunction occurs in the motor 15 or the control mechanism for the motor 15 and the electric function stops functioning, the handle portion 232 can be pulled out to set the manual mode in which the rotational force generated by manually rotating the handle portion 232 is applied to the stop valve 90. Furthermore, in the manual mode, the rotational force generated by manually rotating the handle portion 232 is not transmitted to the motor 115, thereby preventing adverse effects on the motor 115 (for example, the generation of induced current).

[0045] <Other embodiments> Although the first and second embodiments of the present invention have been described above, the present invention may have other embodiments. For example, the outer socket portion 60 and the attachment portion 70 may be integrally formed.

[0046] The stop valves that are opened and closed by the opening and closing devices according to the above embodiments include those installed on agricultural land to control the supply and discharge of water to the land, but the installation location, purpose, function, etc. are not limited to these. For example, they may be fire hydrants used for disaster prevention purposes. In short, the stop valve opening and closing device according to the present invention can be connected to any device that is installed outdoors or indoors and has a mechanism in which a valve is rotated by an externally supplied rotational force to open and close a flow path in order to control the flow of water or other fluids.

[0047] Furthermore, the movement direction of the stopcock of the water stopcock is not limited to the vertical direction. In short, the grounding direction of the entire opening and closing device according to the present invention may be determined so that the movement direction of the stopcock coincides with the movement direction of the inner socket portion, the outer socket portion, and the attachment portion 70 (in other words, the movement direction of the rotation shaft of the motor 15).

[0048] In short, the device of the present invention is a device that is used by connecting it to a valve, and has an inner socket portion that is attached to an output shaft to which the rotational force generated by a motor is transmitted and that rotates around the output shaft, and a hollow outer socket portion that has a cross-sectional shape that corresponds to the cross-sectional shape of the inner socket portion, at least one of which is an open end, and which is directly or indirectly connected to a stop valve at the end other than the open end, and into which the inner socket portion is inserted and which moves in the direction of the output shaft while rotating due to the rotational force received from the inner socket portion. [Explanation of symbols]

[0049] 100A, 100B... Stop valve opening and closing device, 10... Top plate, 20... Movable plate, 30... Base plate, 40... Column portion, 41, 42... Screw, 51, 72c... Female thread hole, 15... Motor, 16... Output shaft, 50... Inner socket portion, 60... Outer socket portion, 70... Attachment portion, 71... Upper attachment portion, 72... Lower attachment portion, 80... Support portion, 90... Stop valve, 43, 71a, 72b, 81... Through hole, 73... Spring pin, 72a, 91... Convex portion, 92... Outer surface, 201 to 204... Gear, 231... Shaft portion, 232... Handle portion.

Claims

1. A motor; a second gear attached to a rotary shaft of the motor; an output shaft that transmits rotational force to the stop valve; an output gear attached to the output shaft; A shaft portion; a handle attached to the shaft for rotating the shaft; an intermediate gear coupled to the shaft portion; a first gear that meshes with the intermediate gear and the output gear and transmits the rotational force transmitted from the intermediate gear to the output shaft; an inner socket portion attached to the output shaft and rotating around the output shaft; a hollow outer socket part having a cross-sectional shape corresponding to the cross-sectional shape of the inner socket part, at least one of which is an open end, and which is directly or indirectly connected to the stop valve at the end other than the open end, the inner socket part being inserted into the open end and which moves in the direction of the output shaft while rotating due to the rotational force received from the inner socket part; By moving the handle in the axial direction of the shaft, the intermediate gear is selectively fixed to either a first position where the intermediate gear and the second gear mesh together to transmit the rotational force generated by the motor to the output shaft, or a second position where the intermediate gear does not mesh with the second gear and the rotational force is not transmitted to the output shaft. Water stop valve opening and closing device.

2. A motor, an inner socket portion attached to an output shaft to which a rotational force generated by the motor is transmitted and which rotates around the output shaft; a hollow outer socket part having a cross-sectional shape corresponding to the cross-sectional shape of the inner socket part, at least one of which is an open end, and which is directly or indirectly coupled to a stop valve at an end other than the open end, the inner socket part being inserted from the open end and which moves in the direction of the output shaft while rotating due to the rotational force received from the inner socket part; and The outer socket portion is hollow and generally cylindrical with both ends open, The outer socket portion further includes an attachment portion for fastening to the stop valve, the attachment portion being inserted from an end of the outer socket portion other than the end into which the inner socket portion is inserted. Water stop valve opening and closing device.

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