JP6511699B1 - Gas plug drive - Google Patents

Abstract

The present invention provides a gas plug drive device capable of turning while pressing a gas plug only by the rotation operation of one motor, and closing the gas plug by remote control. An operating body (110) having a recess (111) engageable with a knob (310) of a gas plug (300), a reduction gear train (130) rotationally driven by a motor (120), and umbrella-shaped sliding teeth The movable body 150 is rotated following the rotational movement of the row, and the drive body 160 has umbrella-like teeth engageable with the sliding teeth of the movable body, and the umbrella-like teeth are formed in a direction to push the operating body The plurality of mountain-shaped projections are arranged in the circumferential direction, and the sliding teeth are arranged by arranging the plurality of mountain-shaped projections in the circumferential direction in the direction opposite to the direction in which the operation body is pushed. The ridge-like convex portions of the umbrella-like teeth engage with the valley-like recesses of the sliding teeth, and the valley-like recesses of the umbrella-like teeth engage with the mountain-like protrusions of the sliding teeth. [Selected figure] Figure 1B

Description

  The present invention relates to a gas plug driving device, and more particularly to a gas plug driving device suitable for driving a gas plug used for a gas source plug provided in a gas pipe.

  In recent years, in preparation for disasters such as earthquakes, gas plugs have been developed which can close the gas plugs automatically or remotely.

  As a gas plug which can be closed by remote control, for example, a gas plug driving device as shown in Patent Document 1 has been proposed. (Patent Document 1).

Japanese Patent Application Laid-Open No. 58-46279

  According to Patent Document 1, the rotational force of the motor is applied to the rotatable operating body whose lower end is fitted and connected to the knob portion of the gas plug via the reduction gear train, thereby remotely operating the operating body. be able to. By the way, generally, when closing the gas plug, it is necessary to push and rotate the gas plug in the direction along the rotation axis, but in the method described in Patent Document 1, while pushing in the knob part of the gas plug No specific method for rotating has been proposed. Therefore, in order to push in the knob portion, a motor different from the motor for rotating the operation body is required, the structure and control system become complicated, and there is a problem that the number of parts requiring maintenance increases.

  The present invention has been made in view of such a demand, and the gas plug can be turned while pushing the gas plug only by the rotation operation of one motor, and the gas plug can be closed by remote control. Gas valve drive device.

  The present invention provides the following solutions.

  The invention according to the first aspect is a gas plug driving device for driving a gas plug capable of closing a valve by rotating while pushing a convexly formed knob portion in the axial direction of a rotating shaft, An operating body rotatably and axially movable coaxially with the rotational axis of the gas plug and having a recess engageable with the knob of the gas plug, and a reduction wheel rotationally driven by a motor And an umbrella-like sliding tooth formed coaxially with the operating body on the same axis as the operating body, having an umbrella-like sliding tooth formed around the axis of the rotational axis, and rotating the reduction wheel The apparatus includes a movable body that rotates following operation and a driving body having umbrella-like teeth engageable with sliding teeth of the movable body, and the umbrella-like teeth are formed of a plurality of peaks formed in a direction for pushing the operating body. Are formed by arranging the protuberances in the circumferential direction, thereby forming a mountain-like convex part and a valley-like concave part Are repeatedly arranged in the circumferential direction, and the sliding teeth are formed by arranging a plurality of mountain-like projections in the circumferential direction in the direction opposite to the direction in which the operation body is pushed, whereby The ridges and valleys are repeatedly arranged in the circumferential direction, and the ridges of the umbrella teeth engage with the valleys of the sliding teeth, and the valleys of the ridges are formed. A gas plug driving device is characterized in that the concave portion in the shape of the hook engages with the convex portion of the sliding tooth.

  According to the invention of the first aspect, the movable teeth rotate with the rotation of the reduction wheel, so that the sliding teeth slide against the umbrella-like teeth, and the operating body is moved to the ridge-like projections of the umbrella-like teeth. Since it is pushed in the pushing direction, the movable body can be driven to move forward in the pushing direction of the operating body. Therefore, it is possible to turn the gas plug while pushing it in the axial direction of the rotation shaft only by rotation of one motor. It becomes.

  The invention according to the second feature is the invention according to the first feature, and further provides a gas plug driving device in which a movable body and an operating body are integrally formed.

  According to the second aspect of the present invention, the number of parts can be reduced, so that the structure becomes simpler, and it becomes possible to provide a gas plug driving device that is easy to maintain.

  According to the present invention, it is possible to provide a gas plug driving device capable of rotating while pushing the knob portion of the gas plug in the axial direction only by the rotation operation of one motor.

FIG. 1A shows a perspective view of a gas plug driving device 100 according to the present embodiment. FIG. 1B shows a front view of the gas plug driving device 100 according to the present embodiment. FIG. 1C shows a plan view of the gas plug driving device 100 according to the present embodiment. FIG. 2A shows a perspective view of the final gear 134. FIG. 2B shows a front view of the final gear 134. FIG. 3A shows a perspective view of the movable body 150 as viewed obliquely from above. FIG. 3B shows a perspective view of the movable body 150 as viewed obliquely from below. FIG. 3C shows a plan view of the movable body 150. FIG. FIG. 3D shows a front view of the movable body 150. FIG. FIG. 4A shows a perspective view of the driver 160 as viewed obliquely from above. FIG. 4B is a perspective view of the driver 160 as viewed obliquely from below. 4C shows a bottom view of driver 160. FIG. 4D shows a front view of the driver 160. FIG. FIG. 5 shows a front view of the movable body 150 and the driving body 160 in combination. FIG. 6 is a perspective view of the final gear 134, the movable body 150, and the drive body 160 combined, as viewed obliquely from below.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. This is merely an example, and the technical scope of the present invention is not limited to this. Further, in the drawings, a cover or the like which is not the essence of the invention is partially omitted.

[Entire Configuration of Gas Plug Driving Device 100]
First, the overall configuration of the gas plug driving device 100 according to the present embodiment will be described with reference to FIGS. 1A, 1B, and 1C. 1A shows a perspective view of the gas plug driving device 100, FIG. 1B shows a front view of the gas plug driving device 100, and FIG. 1C shows a plan view of the gas plug driving device 100.

  First, as a premise of the gas plug driving device 100 according to the present embodiment, an existing gas pipe 200 and an existing gas plug 300 for operating a valve body (not shown) for opening and closing the gas pipe 200 are installed. The gas plug 300 is provided with a knob portion 310, and when the gas plug driving device 100 according to the present invention is not used, the knob portion 310 can be pinched and operated with a fingertip. That is, the opening operation of the gas plug 300 is performed by holding the knob portion 310 and rotating it counterclockwise in the circumferential direction. On the other hand, when the gas plug 300 is closed, it can not be operated simply by turning it clockwise in the circumferential direction, and the gas plug 300 is pushed in the axial direction along the rotation axis. By turning clockwise in the direction, it becomes possible to operate. The gas plug driving device 100 according to the present embodiment is installed for such an existing gas pipe 200 and gas plug 300.

  In the present invention, for the sake of convenience, the direction in which the gas plug 300 is pushed in when the closing operation is performed is defined as downward, and the opposite direction is defined as upward.

  The gas plug driving device 100 includes an operating body 110 having a recess 111 engageable with the knob portion 310 of the gas plug 300, and a motor 120 for driving the operating body 110 through a power transmission mechanism such as a gear. A reduction gear train 130 which is driven by the motor 120 and decelerates the power of the motor 120 and transmits it to other members, a base material 140 as a base for fixing parts including the motor 120, and umbrella-like sliding teeth A movable body 150 having a rotation number 151 and rotatably driven following the rotational movement of a reduction gear train 130 and an umbrella-like tooth 161 engageable with a sliding tooth 151 of the movable body 150 are fixed to a base material 140 And a driving body 160.

  Moreover, the gas plug drive device 100 is equipped with the operation piece 170 used when operating manually. Since the movement of the operation piece 170 is transmitted to the operation body 110 through the final gear 134 of the reduction gear train 130 and the movable body 150, the gas plug 300 can be opened and closed by manually operating the operation piece 170. it can. The operation piece 170 is provided with a knob piece 171 for pinching and operating with a finger, and when a person operates without using the motor 120, the knob piece 171 is pinched and turned while being rotated or pushed. By performing the moving operation, the gas plug 300 can be operated manually.

[Operator 110]
In the present embodiment, the operating body 110 is rotatably disposed coaxially with the rotational axis of the gas plug 300. At a lower portion of the operation body 110, a concave portion 111 engaged with the knob portion 310 of the convexly formed gas plug 300 is provided. The depth of the recess 111 is set to such an extent that when the operating body 110 is pushed in the axial direction along with the movement of the movable body 150 described later in the axial direction, the concave portion 111 can be pushed with the knob portion 310.

[Deceleration wheel train 130]
In the present embodiment, the reduction gear train 130 includes a first gear 131 to which power is transmitted from the motor 120, and a second gear 132 and second gear 132 to transmit power transmitted from the first gear 131 to the third gear 133. The third gear 133 transmits the power transmitted from the second gear 134 to the final gear 134, and the final gear 134 transmits the power transmitted from the third gear 133 to the movable body 150 and the operation body 110.

  Here, the final gear 134 will be described with reference to FIGS. 2A and 2B. FIG. 2A is a perspective view of the final gear 134, and FIG. 2B is a front view of the final gear 134.

  The final gear 134 is rotatably disposed coaxially with the pivot shaft of the operating body 110, and as shown in FIGS. 2A and 2B, the gear body 134A, the downwardly extending lower shaft member 134B, and the upwardly extending upper portion It consists of the shaft member 134C. The lower shaft member 134 </ b> B and the upper shaft member 134 </ b> C are formed of a columnar body, and provided with a flat portion in which a portion of a cylinder is cut out. The final gear 134 can rotationally drive the movable body 150 by the lower shaft member 134B being inserted into the insertion hole of the movable body 150 described later. In addition, the operation piece 170 can operate the final gear 134 by inserting the upper shaft member 134 </ b> C into a recess of the operation piece 170 described later.

[Substrate 140]
The base 140 is a member for fixing various devices constituting the gas plug driving device 100, and the motor 120 and the driver 160 are fixed to the base 140. Fixing may be performed by a known method, but in the present embodiment, it is fixed by a screw.

[Movable body 150 and drive body 160]
The movable body 150 and the driving body 160 will be described in detail with reference to FIGS. 3A, 3B, 3C, 3D, 4A, 4B, 4C, 4D and 5. FIG. 3A is a perspective view of the movable body 150 viewed obliquely from above, FIG. 3B is a perspective view of the movable body 150 viewed obliquely from below, FIG. 3C shows a plan view of the movable body 150, and FIG. Shows a front view of the body 150; 4A is a perspective view of the driving body 160 as viewed obliquely from above, FIG. 4B is a perspective view of the driving body 160 as viewed obliquely from below, and FIG. 4C shows a bottom view of the driving body 160. These show the front view of the drive body 160. FIG. Moreover, FIG. 5 is a front view which shows the state which the movable body 150 and the drive body 160 engaged.

  The driving body 160 is a disk-shaped member provided at the center thereof with an insertion hole fixedly installed on the base material 140, and at the lower end portion of the cylindrical body, the lower side, that is, the operation body 110 around the insertion hole. Umbrella-like teeth 161 are formed in the circumferential direction in the pushing direction. The umbrella-like teeth 161 are formed by arranging a plurality of (eight in the figure) mountain-like projections in the circumferential direction, whereby the mountain-like projections and the valley-like recesses are repeatedly arranged in the circumferential direction. Be done. Further, the lower shaft member 134B of the final gear 134 is inserted into an insertion hole provided at the center of the drive body 160.

  Further, in the present embodiment, a plurality of screw holes through which screws for fixing to the base material 140 are inserted are provided in the disk-shaped member that constitutes the driving body 160.

  The movable body 150 is a cylindrical member rotatably disposed coaxially with the rotation axis of the operation body 110 and provided with an insertion hole at the center, and the upper end portion of the cylindrical body is located above the operation body 110. The umbrella-like sliding teeth 151 are formed circumferentially around the rotation axis in the direction opposite to the direction of pushing in the. Similar to the umbrella teeth 161, the sliding teeth 151 have a plurality of (eight in the drawing) mountain-like projections arranged in the circumferential direction, whereby the mountain-like convex parts and the valley-like concave parts repeat. The umbrella-shaped teeth 161 and the sliding teeth 151 are configured to be engaged with each other and slidably in contact with each other. That is, as shown in FIG. 5, the mountain-like convex part of the umbrella-like tooth 161 and the valley-like concave part of the sliding tooth 151 are engaged, and the valley-like concave part of the umbrella-like tooth 161 and the sliding tooth 151 The ridges are configured to engage.

  The insertion hole provided at the center of the movable body 150 is partially provided with a flat surface so as to be able to rotate integrally with the lower shaft member 134B of the final gear 134. That is, although the lower shaft member 134B of the final gear 134 cuts a part of the cylinder and provides a flat surface, the insertion hole of the movable body 150 is not merely a circle, and a flat surface corresponding to the flat surface of the lower shaft member 134B. Is provided. By doing this, the movable body 150 can be configured to rotate following the rotation of the final gear 134.

  Also, a spring member 152 is provided along the inner surface of the insertion hole of the movable body 150. The spring member 152 always applies an upward force to the movable body 150, that is, in a direction in which the sliding teeth 151 of the movable body 150 are pressed against the umbrella teeth 161 of the drive body 160.

  Furthermore, the lower part of the movable body 150 is fixed to the operating body 110 by a plurality of screws. Therefore, the movable body 150 and the operation body 110 operate integrally in the circumferential direction and the axial direction.

[Operation of Movable Body 150 and Operating Body 110]
Next, regarding operations of the movable body 150 and the operation body 110 interlocked with the rotation of the final gear 134, FIG. 6 is a perspective view as viewed obliquely from below the state where the final gear 134, the movable body 150 and the driver 160 are combined. This will be described using

  When the final gear 134 rotates in the closing direction of the on / off valve with the operation of the motor 120, the insertion hole of the movable body 150 and the lower shaft member 134B of the final gear 134 are engaged. Rotate with On the other hand, since the driving body 160 is fixed to the base material 140, the driving body 160 does not move and is substantially immobile. Therefore, since the movable body 150 rotates with respect to the driving body 160, the sliding teeth 151 of the movable body 150 slide against the umbrella-like teeth 161, whereby the mountain-like convex portions of the sliding teeth 151 It is pushed by the ridge-like convex portion of the tooth teeth 161 and pushed downward against the upward force of the spring member 152. That is, the movable body 150 is rotated while being pushed downward. The amount by which the movable body 150 is pushed down with the rotation is at the maximum the height of the ridge-like convex portion of the umbrella-like tooth 161, thereby moving the gas plug 300 in the rotational axis direction. A sufficient amount is set.

  By the way, in the present embodiment, the movable body 150 is fixed to the operation body 110 by a plurality of screws. Therefore, the operating body 110 operates to follow the movement of the movable body 150 in the axial direction and the circumferential direction. That is, as the movable body 150 is pressed and rotated, the operation body 110 is also pressed and rotated.

  And since the recessed part 111 engaged with the knob part 310 of the gas plug 300 is formed in the operation body 110, with the operation | movement of rotating while pushing down the operating body 110, pushing down the gas plug 300 downward. It can be rotated. As a result, the on-off valve of the gas pipe 200 interlocked with the operation of the gas plug 300 can be closed.

  In this manner, only by driving one motor 120, the operating body 110 can be rotated while being pushed down, and as a result, the on / off valve of the gas pipe 200 interlocked with the gas plug 300 can be closed.

Remote control during emergency
Next, remote control of the gas plug 300 in an emergency such as when an earthquake occurs will be described.

  The gas plug driving device 100 according to the present embodiment includes a communication unit and a control unit (not shown), and the control unit closes the motor 120 when a signal to close the gas plug 300 is received in response to the occurrence of an earthquake or a fire. Generate a signal to rotate in the direction. The motor 120 operates the rotation shaft of the motor 120 so as to rotate the gas plug 300 in the closing direction according to the signal from the control unit. Then, with the rotation of the rotation shaft of the motor 120, as described above, the operating body 110 can be rotated while being pushed down, and thereby the gas plug 300 can be rotated while being pushed down. In this way, even in the event of a disaster, the gas plug 300 can be closed by remote control regardless of human hands, and damage due to gas leakage and the like can be suppressed.

[Normal operation]
Next, a case where the gas plug 300 is manually operated while the gas plug driving device 100 according to the present embodiment is used will be described.

  As described above, the gas plug driving device 100 in the present embodiment is provided with the operation piece 170 for manual operation. The lower portion of the operation piece 170 is formed with a recess into which the upper shaft member 134C of the final gear 134 is inserted, and the recess is flat so as to be engageable with the flat surface formed on the upper shaft member 134C. It is formed.

  That is, the concave portion provided at the center of the operation piece 170 is partially provided with a flat surface so as to be able to rotate integrally with the upper shaft member 134C of the final gear 134. That is, although the upper shaft member 134C of the final gear 134 cuts a part of the cylinder and provides a flat surface, the recess of the operation piece 170 is not a simple cylinder, but has a flat surface corresponding to the flat surface. . By doing this, the final gear 134 can be configured to rotate following the rotation of the operation piece 170.

  Since it is comprised as mentioned above, normally, by pinching and rotating the knob part 171 of the operation piece 170, the last gear 134 can be followed and rotated, As a result, opening / closing operation of the gas valve 300 is carried out It is possible to

  In the present embodiment, the operating body 110 having the concave portion 111 and the movable body 150 are separately provided, and they are integrally fixed by fixing them with a screw. However, the operating body 110 and the movable body are integrated. The unit 150 may be integrated into one unit. That is, the recess 111 may be provided in the lower part of the movable body 150 and engaged with the knob 310.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment mentioned above. Further, the effects described in the embodiments of the present invention only list the most preferable effects resulting from the present invention, and the effects according to the present invention are limited to those described in the embodiments of the present invention is not.

  Further, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the described configurations. Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . In addition, with respect to a part of the configuration of each embodiment, another configuration may be added, deleted, or replaced.

Reference Signs List 100 gas plug driving device 110 operation body 120 motor 130 reduction gear train 134 final gear 140 base 150 movable body 151 sliding tooth 152 spring member 160 driver 161 umbrella shaped tooth 170 operation piece 200 gas pipe 300 gas plug

Claims (2)

An operating body for driving a gas plug that can be closed by turning a convex knob portion while pressing it in the axial direction of a rotary shaft.
An operating body rotatably and axially movably disposed coaxially with the rotational axis of the gas plug and having a recess engageable with a knob of the gas plug;
A reduction wheel rotationally driven by a motor,
The reduction gear is provided coaxially with the rotation axis of the operation body, and has an umbrella-like sliding tooth which is disposed movably integrally with the operation body and formed around the axis of the rotation axis. A movable body that rotates following the rotational movement of the
A substantially stationary drive body formed of a disc-like member and having in the circumferential direction umbrella-like teeth engageable with the sliding teeth of the movable body;
The umbrella-like teeth are configured by arranging a plurality of mountain-shaped projections formed in the direction in which the operating body pushes the knob portion in the circumferential direction, thereby forming a mountain-shaped convex portion and a valley The recesses are repeatedly arranged in the circumferential direction,
The sliding teeth are formed by arranging a plurality of mountain-shaped projections in the circumferential direction in a direction opposite to the direction in which the operating body pushes the knob portion , whereby mountain-shaped projections and valleys are formed. The concave portions of are repeatedly arranged in the circumferential direction,
That mountain-like protrusions of the umbrella-like teeth are engaged with the valley-shaped recess of the sliding tooth trough-shaped recess of the umbrella-shaped teeth engage a mountain-like protrusions of the Suridoha And
As the movable body rotates following the reduction wheel, the sliding teeth slide relative to the umbrella teeth, and mountain-like convex portions of the sliding teeth are mountains of the umbrella teeth The movable body is moved in a direction to push the operating body against the knob portion by being pushed by the convex portion, and the operating body that operates integrally with the movable body moves the knob portion. A gas plug driving device characterized in that an operation of pushing in an axial direction is performed while being rotated around the rotation axis .   The gas plug drive according to claim 1, wherein the movable body and the operating body are integrally formed.