JP2020094829A - Liquid level sensor inspection device - Google Patents

Abstract

To provide a liquid level sensor inspection device capable of simplifying a structure and easily inspecting a liquid level sensor.SOLUTION: A liquid level sensor inspection device 1 rotates a liquid level sensor 2 installed in a liquid tank in a fixed direction to inspect on/off operation of an internal switch. A liquid level sensor inspection device 1 includes: a turning member 4 which is provided at one end of a long handle part 3 and rotated at a predetermined angle or more in the fixed direction; a holding member 5 which is provided in the turning member 4 and holds the liquid level sensor 2; and an operation member 6 which is provided at the other end of the handle part 3 and operates rotation of the turning member 4.SELECTED DRAWING: Figure 1

Description

The present invention relates to a liquid level sensor inspection tool for inspecting a liquid level sensor for detecting a liquid level in a liquid tank such as a gray water drain tank.

Generally, for example, there is a level regulator as a sensor that detects the water level as the liquid level. This level regulator hangs vertically in the air, and when the water level in the water tank rises to reach the level regulator, it tilts in a certain direction, and this operation turns on or off the internal switch to cause liquid level. Detect faces. Then, even if the water level rises, the level regulator does not float on the liquid surface while being submerged in the water while tilting to the fixed position.

The above level regulator needs to be regularly inspected for proper on/off operation of internal switches. In this case, conventionally, the level regulator can be easily inspected if the level regulator is arranged within the reach of the worker through the manhole.

However, if the level regulator is located within the reach of the worker through the manhole, after draining all the water in the water tank, the worker enters the water tank and grasps the level regulator to keep it constant. Check the on/off operation of the internal switch by inclining to the direction.

In addition, when the level regulator is arranged in such a range that the operator cannot reach, the operator uses the magic hand described in Patent Document 1, for example, to check the operator without entering the tank. It is also possible.

Utility model registration No. 3209352

However, although the conventional magic hand can grip an object to be grasped from both the left and right sides, it cannot deal with something such as the level regulator that operates by tilting in a certain direction. Therefore, it is necessary for the worker to rotate the magic hand body and tilt it in a certain direction at the same time as grasping the level regulator with the magic hand.

As a result, the conventional magic hand has a problem that the inspection work is troublesome and the workability is extremely poor. Further, the conventional magic hand has a problem that the number of parts is large and the structure is complicated.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid level sensor inspecting tool that can simplify the structure and easily inspect the liquid level sensor.

In order to achieve such an object, the invention according to claim 1 is a liquid level sensor inspection for inspecting ON/OFF operation of an internal switch by rotating a liquid level sensor installed in a liquid tank in a certain direction. An instrument, a rotating member provided at one end of a long handle for rotating in a predetermined direction by a predetermined angle or more, and a holding member provided on the rotating member for holding the liquid level sensor A member and an operating member which is provided at the other end of the handle and operates the rotation of the rotating member.

Further, in the invention described in claim 2, in addition to the configuration described in claim 1, the operation member includes a first grip portion that rotatably operates the rotation member, and the first grip portion. And a second gripping portion that is installed adjacent to and that operates to hold the holding member.

Further, in the invention described in claim 3, in addition to the configuration described in claim 1 or 2, the holding member has an opening/closing member configured to be openable/closable, and the liquid is provided when the opening/closing member is closed. It is characterized by holding a position sensor.

Further, in the invention according to claim 4, in addition to the configuration according to claim 1, the holding member accommodates the liquid level sensor so that the liquid level sensor can be taken in and out, and the liquid level sensor is in the predetermined direction and is in the predetermined direction. It is characterized in that a storage concave portion for holding the rotation up to an angle or more is formed.

According to the first aspect of the present invention, the liquid level sensor is held by the holding member provided on the turning member, and the turning member is operated by the operating member to turn the liquid level sensor by a predetermined angle or more. Thus, the on/off operation of the switch of the liquid level sensor is inspected, so that the structure is simplified and the liquid level sensor can be easily inspected.

Further, according to the invention described in claim 2, the operation member is installed adjacent to the first gripping portion for rotatably operating the rotating member, and the holding member is provided. A second gripping portion that can be held so that the second gripping portion can be operated to hold the holding member, and the first gripping member adjacent to the second gripping portion can rotate the holding member. By operating so as to rotate, the usability is improved and the operability can be improved.

Further, according to the invention described in claim 3, the holding member has an opening/closing member configured to be openable/closable, and the liquid level sensor is held by holding the liquid level sensor when the opening/closing member is closed. It becomes possible to hold it securely.

Further, according to the invention described in claim 4, the holding member has a storage recess for accommodating the liquid level sensor so that the liquid level sensor can be taken in and out, and for holding the liquid level sensor in a certain direction and rotating up to a predetermined angle or more. Therefore, the liquid level sensor can be held without providing an opening/closing mechanism. As a result, the structure can be further simplified.

It is a schematic block diagram which shows the liquid level sensor inspection tool which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the state which the holding member of FIG. 1 accommodates a liquid level sensor. It is a block diagram which shows the rotation roller before rotating the rotation member of FIG. It is a block diagram which shows the rotation roller after rotating the rotation member of FIG. It is a partial cross-sectional block diagram which shows the state which the opening/closing member of the operation member and holding member of the liquid level sensor inspection instrument which concerns on 2nd Embodiment of this invention open. FIG. 6 is a partial cross-sectional configuration diagram showing a state in which the opening/closing member of the holding member in FIG. 5 is closed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
1 to 4 show a first embodiment of the present invention. FIG. 1 is a schematic configuration diagram showing a liquid level sensor inspection tool according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram showing a state in which the holding member of FIG. 1 stores the liquid level sensor. FIG. 3 is a configuration diagram showing a rotating roller before rotating the rotating member of FIG. FIG. 4 is a configuration diagram showing the rotation roller after the rotation member of FIG. 1 is rotated.

In the following embodiments, the direction in which the holding member is installed will be referred to as the front end direction, and the direction in which the operation member is installed will be referred to as the rear end direction. Further, in the following embodiments, an example will be described in which the liquid level sensor is applied to a water level sensor and a level regulator is used as the water level sensor.

The water level sensor inspection tool 1 of the present embodiment turns on and off the internal switch by rotating the water level sensor 2 shown in FIG. 2 installed in a water tank (not shown) in a certain direction by a predetermined angle or more, for example, 100 degrees or more. Is to be inspected. When the water level in the water tank becomes equal to or higher than a predetermined water level, the water level sensor 2 rotates in a certain direction by buoyancy and an internal switch is turned on or off to detect that fact.

As shown in FIG. 1, the water level sensor inspection tool 1 includes a long handle portion 3, a rotating member 4 provided at one end of the handle portion 3, and a water level sensor 2 provided on the rotating member 4. A holding member 5 for holding and a manipulating member 6 provided at the other end of the handle 3 for manipulating the rotation of the rotating member 4 are provided.

As shown in FIG. 1, the elongated handle portion 3 is a cylindrical pipe made of metal or synthetic resin having a length of about 1.5 to 2.0 m, for example. The handle 3 may have a telescopically expandable structure. An operation wire 7 is provided in the handle 3 along the length direction. One end of the operation wire 7 is locked to the tip of the turning pipe 12 of the turning member 4, and the other end of the operation wire 7 is fixed to the grip portion (first grip portion) 6 a of the operation member 6. There is.

As shown in FIG. 3, a coil spring 8 as an elastic member is attached between one end (tip) of the handle 3 and the rotating pipe 12 of the rotating member 4. The coil spring 8 applies elastic force to the handle portion 3 so that the rotating pipe 12 of the rotating member 4 is located on the same straight line.

The rotating member 4 rotates the holding member 5 in a fixed direction by a predetermined angle or more, for example, 100 degrees or more in the present embodiment. Specifically, as shown in FIG. 3, the rotating member 4 is rotatably supported by one end of the handle portion 3 and has a notch portion 10a formed by cutting out a part of the outer periphery thereof. 10, an engaging member 11 that engages with the cutout portion 10a of the rotating roller 10 and is fixed at a predetermined position of the operation wire 7, and one end of the handle portion 3 by rotating the rotating roller 10. The rotating pipe 12 that rotates relative to the rotating pipe 12 is provided. The rotating pipe 12 is made of the same material as the handle 3 and has the same diameter, and is bent so that the holding member 5 can easily hold the water level sensor 2 from below.

Therefore, in the present embodiment, when the operator grips the grip portion 6a of the operation member 6, the operation wire 7 is pulled and the engagement member 11 rotates the rotation roller 10 to a predetermined angle. By rotating the rotating roller 10, the rotating pipe 12 is configured to rotate at a predetermined angle.

As shown in FIG. 1, the holding member 5 is installed at the tip of the turning pipe 12 of the turning member 4 and accommodates the water level sensor 2 so that it can be taken in and out. Specifically, as shown in FIG. 2, the holding member 5 is formed, for example, by a wire net in a bulge shape with a middle bulge, and an inner diameter D1 at the opening end thereof is formed to be slightly larger than an outer diameter D2 of the water level sensor 2. Since the holding member 5 is formed in the shape of a pot with a middle bulge, the storage recess 13 is formed on the inner peripheral surface.

The water level sensor 2 of this embodiment is formed in a spindle shape. Therefore, when the water level sensor 2 is housed in the holding member 5, the water level sensor 2 enters the housing recess 13. As a result, the holding member 5 can hold the water level sensor 2 rotating in a certain direction and up to a predetermined angle or more.

The operation member 6 is provided with the above-mentioned gripping portion 6a for a worker to grip. When the operator grips the grip portion 6a and pulls the operation wire 7, the engaging member 11 rotates the rotating roller 10 to rotate the rotating pipe 12 at a predetermined angle.

Next, the operation of this embodiment will be described.

In order to check the on/off operation of the water level sensor 2, first, the worker holds the water level sensor inspection tool 1 in his hand and stores the water level sensor 2 in the holding member 5 as shown in FIG. In this case, the water level sensor 2 enters the storage recess 13 of the holding member 5.

Then, the operator grips the grip portion 6a of the operating member 6, whereby the operating wire 7 is pulled from the state of FIG. 3, and the engaging member 11 causes the rotating roller 10 to move to a predetermined angle as shown in FIG. Rotate. Then, as the rotating roller 10 rotates, the rotating pipe 12 rotates against the elastic force of the coil spring 8.

At that time, since the water level sensor 2 is inserted into the storage recess 13 of the holding member 5, the holding member 5 rotates the water level sensor 2 in a certain direction by a predetermined angle or more, for example, 100 degrees or more. Also, the stored state will be maintained. In this way, the operating state of the water level sensor 2 can be inspected by inclining the water level sensor 2 in a certain direction, for example, 100 degrees or more, and detecting the ON/OFF operation of the internal switch.

After that, when the worker does not hold the grip portion 6a of the operation member 6, the rotating pipe 12 is rotated by the elastic force of the coil spring 8 and returns to be positioned on the same straight line with respect to the handle portion 3. ..

Next, the worker holds the water level sensor inspection tool 1 in his hand and detaches the inspected water level sensor 2 from the holding member 5. After the inspection of one water level sensor 2 is completed, a large number of water level sensors 2 can be sequentially inspected by repeating the series of operations described above.

As described above, according to the present embodiment, the water level sensor 2 is held by the holding member 5 provided on the turning member 4, and the turning member 4 is operated by the operating member 6 so that the water level sensor 2 is moved in a certain direction at a predetermined angle or more. Since the on/off operation of the switch of the water level sensor 2 is inspected by rotating the water level sensor 2, the structure can be simplified and the water level sensor 2 can be easily inspected.

Further, according to the present embodiment, the holding member 5 has the storage recess 13 that stores the water level sensor 2 so that the water level sensor 2 can be taken in and out, and that holds the water level sensor 2 in a fixed direction and up to a predetermined angle or more. Therefore, the water level sensor 2 can be held without providing an opening/closing mechanism for holding the water level sensor 2. As a result, the structure can be further simplified.

Further, according to the present embodiment, since the holding member 5 is made of the wire mesh, it is possible to easily visually confirm whether the water level sensor 2 is held by the holding member 5.

In the present embodiment, although not shown, by attaching a light or a CCD camera to the tip side of the rotating pipe 12, the water level sensor 2 can be easily checked and the inspection work can be further facilitated.

[Second Embodiment]
FIG. 5 is a partial cross-sectional configuration diagram showing a state in which the operation member and the opening/closing member of the holding member of the liquid level sensor inspection tool according to the second embodiment of the present invention are opened. FIG. 6 is a partial cross-sectional configuration diagram showing a state in which the opening/closing member of the holding member of FIG. 5 is closed.

The same parts as those of the first embodiment will be designated by the same reference numerals, duplicate description will be omitted, and different configurations and operations will be described.

In the present embodiment, mainly the configuration and action of the holding member are different from those in the first embodiment. Specifically, as shown in FIG. 5, the holding member 15 of the present embodiment includes a base plate 16 and base ends of both sides of the base plate 16 which are rotatably supported by connecting pins. Opening/closing members 17, 17 formed in a substantially bowl shape and configured to be openable/closable, coil springs 18, 18 for giving elastic force to open the opening/closing members 17, 17 and opening/closing the opening/closing members 17, 17 And a link mechanism 20.

As shown in FIGS. 5 and 6, one end (lower end) of the link mechanism 20 is connected to the tip of the operation wire 9 and is vertically movable, and the other end (upper end) of the vertical drive link 21 is vertically movable. Opening/closing drive links 22 and 22, one end of which is pivotally supported by a connecting pin, are provided on the left and right sides of, respectively. The other ends of the opening/closing drive links 22, 22 are pivotally supported by the connecting pins on the inner surfaces of the opening/closing members 17, 17, respectively.

The other end of the operating wire 9 is connected to a gripping portion 6b as a second gripping portion of the operating member 6 through the handle portion 3 via the turning pipe 12. The grip portion 6b is installed adjacent to the grip portion 6a as the first grip portion that operates the rotation of the rotating member 4.

Therefore, when the grip portion 6a of the operating member 6 is gripped and the operation wire 9 is pulled to lower the vertical drive link 21, the open/close drive links 22 and 22 are pulled so that the open/close members 17 and 17 become elastic force of the coil spring 18. Move in the closing direction against. Accordingly, the opening/closing members 17, 17 can hold the water level sensor 2.

In the present embodiment, by grasping the grasping portion 6b of the operation member 6, the operation wire 9 is pulled and the opening/closing members 17, 17 of the holding member 15 are closed to hold the water level sensor 2. Then, by gripping the gripping portion 6a of the operation member 6 while gripping the gripping portion 6b of the operation member 6, the operation wire 7 is pulled, and the rotating member 4 is operated to move in a fixed direction at a predetermined angle or more. It is configured to be rotated. In this case, since the grip 6a and the grip 6b are arranged adjacent to each other, it is possible to easily operate them.

Next, the operation of this embodiment will be described.

In order to check the on/off operation of the water level sensor 2, first, the operator holds the water level sensor inspection tool 1 in his hand and holds the grip portion 6b of the operation member 6, whereby the operation wire 9 is pulled. In this case, the opening/closing members 17, 17 close against the elastic force of the coil spring 18 to hold the water level sensor 2.

Further, the operator grips the grip portion 6a of the operation member 6 while gripping the grip portion 6b, whereby the operation wire 7 is pulled from the state of FIG. 3, and the engagement member 11 is released as shown in FIG. The rotation roller 10 is rotated at a predetermined angle. Then, as the rotating roller 10 rotates, the rotating pipe 12 rotates against the elastic force of the coil spring 8.

At that time, since the water level sensor 2 is held by the opening/closing members 17 and 17 of the holding member 5, the holding member 15 rotates the water level sensor 2 in a certain direction by a predetermined angle or more, for example, 100 degrees or more. I will hold it. In this way, the operating state of the water level sensor 2 can be inspected by inclining the water level sensor 2 in a certain direction, for example, 100 degrees or more, and detecting the ON/OFF operation of the internal switch.

After that, when the worker does not hold the grip portion 6a of the operation member 6, the rotating pipe 12 is rotated by the elastic force of the coil spring 8 and returns to be positioned on the same straight line with respect to the handle portion 3. .. When the worker does not grip the grip portion 6b of the operation member 6, the elastic force of the coil spring 18 opens the opening/closing members 17 and 17 to separate the water level sensor 2 from the holding member 15. After the inspection of one water level sensor 2 is completed, a large number of water level sensors 2 can be sequentially inspected by repeating the series of operations described above.

As described above, according to the present embodiment, the operating member 6 is arranged adjacent to the grip portion 6a that rotatably operates the rotating member 4, and is operable to hold the holding member 15. The holding member 6 is operated to hold the water level sensor 2 by the holding part 6b, and the turning member 4 is turned by the holding member 6a adjacent to the holding part 6b. By operating, the usability is improved and the operability can be improved.

Further, according to the present embodiment, the holding member 15 has the opening/closing members 17, 17 configured to be openable/closable, and the water level sensor 2 is gripped when the opening/closing members 17, 17 are closed, thereby It becomes possible to securely hold the sensor 2. As a result, reliability can be improved. The other configurations and operations are the same as those in the first embodiment, and the description thereof will be omitted.

[Other Embodiments]
Although the respective embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope of the invention and the scope of the invention, and are also included in the invention described in the claims and the scope of equivalents thereof.

For example, in each of the above-described embodiments, an example in which the water level sensor 2 is formed in a spindle shape has been described, but the present invention is not limited to this and may have another shape. In the first embodiment, the accommodating recess 13 of the holding member 5 is formed corresponding to the spindle-shaped water level sensor 2, but the shape of the accommodating recess 13 may be appropriately changed according to the outer shape of the water level sensor 2. Good. In short, the storage recess 13 of the holding member 5 may have any shape so that the water level sensor 2 does not separate from the holding member 5 when the water level sensor 2 is stored and tilted by a predetermined angle or more.

Further, in each of the above-described embodiments, an example in which the coil springs 8 and 18 are used as elastic members has been described, but the present invention is not limited to this, and other elastic members such as leaf springs and rubber may be used.

Furthermore, in each of the above-described embodiments, an example in which the water level sensor 2 that detects the water level of the water tank is inspected has been described, but the present invention is not limited to this, and even when inspecting a liquid level sensor that detects the liquid level of a liquid other than water. Applicable.

1 Water level sensor inspection equipment (liquid level sensor inspection equipment)
2 Water level sensor (liquid level sensor)
3 Handle 4 Rotating Member 5 Holding Member 6 Operation Member 6a Grip 6b Grip 7 Operation Wire 8 Coil Spring (Elastic Member)
9 Operation Wire 10 Rotation Roller 10a Cutout 11 Engagement Member 12 Rotation Pipe 13 Storage Recess 15 Retaining Member 16 Board Part 17 Opening/Closing Member 18 Coil Spring (Elastic Member)
20 link mechanism 21 vertical drive link 22 open/close drive link

Claims (4)

A liquid level sensor inspection instrument for inspecting the on/off operation of an internal switch by rotating a liquid level sensor installed in a liquid tank in a certain direction,
A rotating member which is provided at one end of the elongated handle and rotates in the predetermined direction by a predetermined angle or more;
A holding member which is provided on the rotating member and holds the liquid level sensor;
An operating member provided on the other end of the handle for operating the rotation of the rotating member;
An instrument for inspecting a liquid level sensor, comprising: The operation member is provided with a first grip portion that rotatably operates the rotation member, and a second grip portion that is disposed adjacent to the first grip portion and that operates the holding member so that the holding member can be held. The liquid level sensor inspection tool according to claim 1, further comprising: The liquid level sensor inspection instrument according to claim 1 or 2, wherein the holding member has an opening/closing member configured to be openable/closable, and holds the liquid level sensor when the opening/closing member is closed. .. The holding member is formed with a storage recess that stores the liquid level sensor so that the liquid level sensor can be taken in and out, and that holds the liquid level sensor in the predetermined direction and up to the predetermined angle or more. The liquid level sensor inspection tool according to claim 1.

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