JP7253290B1 - water level indicator - Google Patents

Abstract

The present invention provides a water level display device with a simple configuration that is highly reliable and excellent in maintainability. A water level display device (1) includes a fixed member (20) fixed to a target point (P), and a movable member (30) which is rotatably supported by the fixed member (20) and moves up and down by buoyancy. The movable member 30 includes a display portion 31, a shaft portion 33, and a locked portion 35. The fixed member 20 includes a support portion 21 that supports the shaft portion 33 so as to be vertically movable and rotatable, and a locked portion. and a locking portion 25 that locks the locking portion 35 to restrict rotation of the movable member 30 . The display unit 31 is displaced between a housed position in which the display surface 32 is oriented in one direction and a display position in which the display surface 32 is oriented in another direction by rotating with the vertical movement of the movable member 30 . , the locked portion 35 is configured to be guided by the locking portion 25 as the movable member 30 moves up and down. [Selection drawing] Fig. 4

Description

The present invention relates to a water level indicating device.

For example, when a typhoon or torrential rain hits a tunnel-type road under a railway or road, or an underpass such as an underground passage, a large amount of water flows in and floods locally, or the flood water level is significantly higher than the surrounding area. It can get bigger. In order to avoid hazards such as getting stuck, it is desirable that such points be equipped with water level indicators that provide passers-by with information relating to the water level.

Conventional water level display devices consist of a water level measuring means consisting of an ultrasonic meter, a sensor, etc., a processing means for processing the measured water level data, and a signal or rotating light based on the processed data to display information about the water level. A display means and a display means have been used in many cases. A water level indicator with such a complicated structure is costly, takes time and effort to maintain, and furthermore, there is a concern that the electrical system may break down due to flooding or stop functioning during a power outage.

Therefore, for example, Patent Document 1 below discloses a flood display device having a simple structure, which includes a display member that protrudes toward the center of the road due to the buoyancy received when the vehicle is flooded. The display member of this flood display device is erected with its upper end rotatably supported, and its lower end rises while rotating due to the buoyancy received during flooding, thereby reaching the center of the road. configured to protrude.

Japanese Patent No. 5650096

However, the flood display device of Patent Document 1 does not include means for restricting unnecessary rotation of the display member. Therefore, the orientation of the protruding display member may change unintentionally during heavy rain accompanied by strong winds such as typhoons. In addition, there is a possibility that the display members and the like that are accommodated along the side walls and the like will be blown by the wind and hit against the surrounding structures, resulting in damage.

The technology disclosed in the present specification is intended to solve the above problems, and aims to provide a water level display device with a simple configuration that is highly reliable and excellent in maintainability.

In order to solve the above problems, a water level display device according to the present disclosure is a water level display device that performs display related to the water level at one point, comprising: a fixed member fixed to the point; a movable member that is freely pivotally supported and moves up and down by buoyancy; a locked portion that is locked to a member; the fixed member includes a support portion that supports the shaft portion so as to be vertically movable and rotatable; It has an inclined guide surface and an engaging portion that engages the engaged portion to restrict rotation of the movable member. By rotating in contact with the surface, the locked portion is displaced between an accommodation position in which the display surface is oriented in one direction and a display position in which the display surface is oriented in another direction, It is configured to be guided by the engaging portion as the movable member moves up and down.

According to the present disclosure, it is possible to provide a water level display device with a simple configuration that is highly reliable and excellent in maintainability.

FIG. 1 is a schematic diagram showing an outline of an installation situation of a water level display device according to an embodiment. FIG. 2 is a perspective view of each member constituting the water level display device. (2A) is a perspective view of a fixing member. (2B) is a perspective view of a movable member. FIG. 3 is a front view of the water level display device viewed from the center of the road. (3A) is a front view of the water level display device when the display is in the retracted position. (3B) is a front view of the water level display device when the water level is high, with the display unit at the display position. FIG. 4 is a side view of the water level display device viewed from the traveling direction of a passerby. (4A) is a side view of the water level display device of (3A). (4B) is a side view of the water level display device of (3B). FIG. 5 is a top view of the water level display device viewed from above. (5A) is a top view of the water level display device of (3A). (5B) is a top view of the water level display device of (3B).

<Embodiment>
Embodiments of the water level display device according to the present disclosure will be specifically described below with reference to the drawings. In the following description, the front side of the paper surface of FIG. 1 is the front side of the water level display device. Also, the direction from the right side to the left side in FIG. Note that the relative dimensions and arrangement of members in each drawing are not necessarily accurate, and some members have been changed in scale or the like for convenience of explanation.

FIG. 1 is a schematic diagram showing an outline of an installation situation of a water level display device 1 according to this embodiment. In this embodiment, as shown in FIG. 1, for example, a water level display device 1 installed on a side wall S of an underpass road that is dug down so as to pass under a railroad track is exemplified. The water level display device 1 sets a desired point on the underpass road as a target point P, and performs display relating to the water level W at the target point P. FIG.

The structure of the water level display device 1 will be described below mainly with reference to FIG.
The water level display device 1 includes a fixed member 20 attached to the side wall S and a movable member 30 that moves up and down according to the water level W. As shown in FIG. (2A) is a perspective view of the fixed member 20, and (2B) is a perspective view of the movable member 30. FIG.

The fixing member 20 includes a rectangular plate-like mounting portion 27 as shown in FIG. 2A. The mounting portion 27 is mounted with its longitudinal direction aligned with the vertical direction and with its other plate surface along the side wall S so that one plate surface faces the center of the road. The mounting portion 27 according to the present embodiment extends downward from the lower end of a lower support portion 21B, which will be described later, and is fixed to the side wall S with fasteners or the like while the lower end is in contact with the road surface. The extension length of the lower end portion of the mounting portion 27 can be appropriately determined according to desired display timing (water level) and the like.

The fixed member 20 also includes a support portion 21 that supports a shaft portion 33 of the movable member 30, which will be described later, so that it can move vertically and rotate. The support portion 21 according to this embodiment includes an upper support portion 21A and a lower support portion 21B. The upper support portion 21A and the lower support portion 21B are composed of straight pipes having the same diameter and having perfectly circular cross sections perpendicular to the central axis, and are open at both upper and lower ends. The upper support portion 21A and the lower support portion 21B are arranged in series in the vertical direction on one plate surface of the attachment portion 27 with a predetermined space therebetween.

The fixed member 20 also comprises an inclined guide surface 23 inclined with respect to the horizontal plane. The inclined guide surface 23 according to this embodiment includes an upper inclined guide surface 23A and a lower inclined guide surface 23B. In this embodiment, the lower end of the upper support portion 21A is cut obliquely, and the lower surface of the upper support portion 21A guides the engaged portion 35 of the movable member 30 described below as an upper inclined guide surface 23A. The upper inclined guide surface 23A according to the present embodiment is inclined so that the central position of the side surface of the water level display device 1 viewed from the traveling direction side is highest (see FIG. 4 and the like). The upper end of the lower support portion 21B is also cut obliquely, and the upper surface of the lower support portion 21B functions as a lower inclined guide surface 23B. The lower inclined guide surface 23B is inclined so that the portion located in front of the water level display device 1 is the lowest (see FIG. 3 and the like).

The fixed member 20 also includes a locking portion 25 that locks a locked portion 35 of the movable member 30, which will be described later. The locking portion 25 according to this embodiment includes an upper locking portion 25A and a lower locking portion 25B. The upper locking portion 25A formed in the upper support portion 21A is formed in a slit shape extending upward from the uppermost end of the upper inclined guide surface 23A. A lower engaging portion 25B formed in the lower support portion 21B is formed in a slit shape extending downward from the lowest end of the lower inclined guide surface 23B. Therefore, in this embodiment, the upper engaging portion 25A extends vertically at the center of the side surface of the water level display device 1 (see FIG. 4 etc.), and the lower engaging portion 25B extends vertically at the center of the front surface of the water level display device 1. direction (see FIG. 3, etc.). That is, both locking portions 25A and 25B formed in a slit shape are opened in a direction rotated by 90° with respect to the central axis of the support portion 21 when viewed from above.

The dimensions and relative dimensional positional relationship of each part in the fixing member 20 can be appropriately determined according to desired display timing, desired display height, and the like. In this embodiment, as shown in (2A), the upper support portion 21A is considerably longer than the lower support portion 21B. In this way, the display unit 31, which will be described later, can be displaced to the display position at a relatively early timing, and the upward displacement when the water level is high can be increased to improve the visibility of the display. The lowermost end of the upper support portion 21A and the uppermost end of the lower support portion 21B are arranged at substantially the same height, and the vertical interval between the upper inclined guide surface 23A and the lower inclined guide surface 23B is relatively small. is set to be By doing so, it is possible to shorten the period in which the display unit 31 is rotatable and improve display stability and the like.

Although the material of the fixing member 20 described above is not limited, it may be made of, for example, resin having excellent weather resistance. If the movable member 30, which will be described later, is also made of resin, and the entire water level display device 1 is made of only resin, it can be manufactured at one manufacturing site, which is preferable. Alternatively, part or all of the fixing member 20 may be made of stainless steel in consideration of mounting and installation conditions.

On the other hand, the movable member 30 has a display portion 31 provided with a display surface 32 for displaying the water level W, as shown in FIG. 2B. The display unit 31 according to this embodiment has a rectangular plate shape, and at least one plate surface is a display surface 32 . Although not shown in the figure, the other plate surface may also be a display surface 32 capable of displaying the water level W. The movable member 30 is supported by the fixed member 20 in a posture in which the longitudinal direction of the display section 31 is aligned with the horizontal direction.

The movable member 30 also includes a shaft portion 33 connected to the display portion 31 . The shaft portion 33 is composed of a straight and long round bar having a perfectly circular cross section perpendicular to the shaft. A central axis of the shaft portion 33 serves as a rotation axis R when the movable member 30 rotates. One end of the shaft portion 33 is fixed to one short side of the display portion 31 . It is preferable that the outer diameter of the shaft portion 33 is slightly smaller than the inner diameter of the support portion 21 described above. The outer diameter of the shaft portion 33 and the inner diameter of the support portion 21 are such that when the shaft portion 33 is supported by the support portion 21, the movable member 30 can move up and down and rotate smoothly while suppressing rattling of both members. is determined such that The movable member 30 is supported by the fixed member 20 in a posture in which the longitudinal direction of the shaft portion 33 is aligned with the vertical direction.

The movable member 30 also includes a locked portion 35 that can be locked to the locking portion 25 of the fixed member 20 . The locked portion 35 according to the present embodiment is configured by a projection radially protruding from a predetermined position of the shaft portion 33 . It is preferable that the horizontal outer dimension of the base of the locked portion 35 is slightly smaller than the horizontal inner dimension of the previously described locking portion 25 formed in a slit shape. The outer dimension of the locked portion 35 and the inner dimension of the locking portion 25 in the horizontal direction are adjusted so that the locked portion 35 is locked to the locking portion 25 while suppressing rattling of both members. It is determined so that the member 30 can move up and down smoothly. The arrangement position of the locked portion 35 on the shaft portion 33 is determined by considering the length of the shaft portion 33, the height of the upper locking portion 25A and the lower locking portion 25B, etc., according to the desired display timing and the like. can be determined accordingly.

The movable member 30 according to this embodiment also includes a retainer 37 . The retaining portion 37 is formed by radially expanding the other end of the shaft portion 33 (the end not connected to the display portion 31). The outer diameter of the retaining portion 37 is larger than the inner diameter of the support portion 21 described above, so that the movable member 30 supported by the fixed member 20 does not come off upward. In this embodiment, if the target point P is not flooded, the lower end of the retaining portion 37 is set to be in contact with the road surface. In this way, the movable member 30 supported by the fixed member 20 is less likely to be subjected to excessive load during normal operation, which is preferable.

The above-described movable member 30 is formed to be lightweight so that the entirety can move up and down by buoyancy. Although the material of the movable member 30 is not limited, for example, it may be formed by foaming and filling urethane or the like into a hollow frame made of hard resin having excellent weather resistance. In this way, even if cracks or the like occur on the surface, it is possible to reduce the weight of the whole while suppressing the infiltration of water into the interior.

In the movable member 30, the shaft portion 33 is inserted into the support portion 21, the display portion 31 is arranged above the upper support portion 21A, and the retaining portion 37 is arranged below the lower support portion 21B. It is supported by the fixing member 20 (see FIG. 3, etc.). For example, the shaft portion 33 is supported in the support portion 21 with a certain clearance, so that the movable member 30 can move vertically and rotate about the rotation axis R with respect to the fixed member 20. . When the movable member 30 moves up and down and rotates, the locked portion 35 moves between the lower locking portion 25B and the upper locking portion 25A.

For example, the water level display device 1 can be manufactured by attaching the components of the movable member 30 to the fixed member 20 while assembling the components of the movable member 30 at the target point P to produce a frame, and filling the frame with foam on the spot. be. Details are as follows. (i) A movable member 30 composed of one component of the movable member 30 in which the frame of the shaft portion 33 integrally formed with the locked portion 35 and the display portion 31 are connected, and the frame of the retaining portion 37. and the fixing member 20 are prepared. In addition, the upper engaging portion 25A of the fixing member 20 is preferably provided so as to open at the upper end of the upper supporting portion 21A. (ii) The fixing member 20 is attached to the side wall S of the target point P by, for example, grounding the lower end of the attachment portion 27 to the road surface. (iii) From above the fixing member 20, the shaft portion 33 side of one component is inserted into the support portion 21 so that the locked portion 35 passes through the upper locking portion 25A. (iv) A frame body of the movable member 30 is manufactured by attaching other components to the lower end portion of the shaft portion 33 that protrudes downward from the lower support portion 21B. (v) Foam filling is performed by injecting a foamed resin from an injection port provided in a part of the manufactured frame. As described above, the manufacturing and installation of the water level display device 1 can be completed at the same time as the movable member 30 is completed.

Next, the operation of the water level display device 1 will be described mainly with reference to FIGS. 3 to 5. FIG.
(3A), (4A), and (5A) are diagrams of the water level display device 1 in a normal state, in which the display unit 31 is in the retracted position, viewed from the center of the road, the traveling direction of the passerby, and from above. be. In addition, (3B), (4B), and (5B) show the water level display device 1 when the water level is high when the display unit 31 is at the display position, viewed from the center side of the road, the traveling direction of the passerby, and from above. It is a diagram. In this specification, the accommodation position refers to a position where the plate surface of the display unit 31 is substantially parallel to the side wall S, and the display position refers to a position where the plate surface of the display unit 31 is substantially perpendicular to the side wall S. .

In the water level display device 1 according to the present embodiment, when the target point P is not submerged or the water level is relatively low, as shown in (3A) and (4A), the movable member 30 is locked. The portion 35 is locked to the lower locking portion 25B. At this time, the display section 31 is maintained at the accommodated position in which the display surface 32 is substantially parallel to the side wall S, as shown in (6A). At the stowed position, as shown in (4A), the display surface 32 is not visible to passers-by on the road, and the display section 31 does not obstruct traffic.

When water begins to accumulate at the target point P, the movable member 30 moves upward due to buoyancy as the water surface rises. As a result, the locked portion 35 is disengaged from the lower locking portion 25B, and the movable member 30 can rotate around the rotation axis R. As shown in FIG. When the movable member 30 rises further and the locked portion 35 comes into contact with the upper inclined guide surface 23A, the locked portion 35 moves along the upper inclined guide surface 23A, and the movable member 30 rises. It rotates around the rotation axis R. When the engaged portion 35 reaches the upper engaging portion 25A formed at the uppermost end portion of the upper inclined guide surface 23A and is engaged therein, the rotation of the movable member 30 is restricted. At this time, when viewed from above, the movable member 30 is rotated by 90 degrees from the normal state, and the display surface 32 of the display section 31 is at a position rotated by 90 degrees from the retracted position (see (5B)). That is, the display unit 31 is arranged at a display position in which the display surface 32 faces the traveling direction of the passerby (see (4B)).

When the water surface continues to rise even after the engaged portion 35 is engaged with the upper engaging portion 25A, the movable member 30 displays the display portion 31 as shown in (3B), (4B), and (5B). Move further up while maintaining position. Along with this, the display surface 32 is displayed further upward, thereby improving the visibility of the display. In other words, when necessary, the display unit 31 can be moved to a display position much higher than the accommodation position for display. The display becomes easier to read.

Later, when the water at the target point P begins to recede, the movable member 30 pushed up by the buoyancy moves downward as the water surface descends. When the engaged portion 35 descends together with the movable member 30 and separates from the upper engaging portion 25A, the movable member 30 becomes rotatable about the rotation axis R again. When the movable member 30 descends further and the locked portion 35 comes into contact with the lower inclined guide surface 23B, the locked portion 35 moves along the lower inclined guide surface 23B, and the movable member 30 descends. while rotating around the rotation axis R. When the engaged portion 35 reaches the lower engaging portion 25B formed at the lowermost end of the lower inclined guide surface 23B and is engaged therein, the rotation of the movable member 30 is restricted. At this time, when viewed from above, the movable member 30 has rotated 90° from the high water level, and the display unit 31 has returned to the accommodation position where the display surface 32 has rotated 90° from the display position (see (5A)). . In this way, when the water level W drops and returns to the normal state, the display unit 31 is automatically housed in the housing position where the display surface 32 does not obstruct traffic (see (4A)).

As described above, the water level display device 1 can be repeatedly displaced between the state in which the display unit 31 is in the accommodation position and the state in which the display part 31 is in the display position only by the water level W at the target point P, which greatly reduces the maintenance burden. can be reduced to

Next, the main configuration and effects of the water level display device 1 according to this embodiment will be described again.
The water level display device 1 according to the present embodiment is a water level display device 1 that performs display related to the water level W at the target point (one point) P, and includes a fixing member 20 fixed to the target point P, and a fixing member a movable member 30 which is rotatably pivotally supported by 20 and which moves up and down by buoyancy. The fixing member 20 includes a support portion 21 that supports the shaft portion 33 so as to be able to move vertically and rotate, and a and a locking portion 25 that locks the locked portion 35 to regulate the rotation of the movable member 30. The display portion 31 includes the movable member 30 rotates in contact with the inclined guide surface 23 as it moves up and down, thereby moving between a storage position in which the display surface 32 is oriented in one direction and a display position in which the display surface 32 is oriented in the other direction. The locked portion 35 is configured to be guided by the locking portion 25 as the movable member 30 moves up and down.

According to the above configuration, it is possible to improve the reliability and durability of the display in the simple configuration of the water level display device 1 that utilizes buoyancy. Specifically, by locking the locked portion 35 to the locking portion 25, unintended rotation of the movable member 30 is suppressed, and the display portion 31 can be maintained in a predetermined posture. As a result, it is possible to reduce situations in which the movable member 30 rotates due to strong wind or the like, is unintentionally displaced from the accommodation position or the display position, or is damaged due to contact with surrounding structures or the like.

In the water level display device 1 according to the present embodiment, the support portion 21 includes an upper support portion 21A positioned above and a lower support portion 21B positioned below. and a lower inclined guide surface 23B provided on the upper surface of the lower support portion 21B. and a lower locking portion 25B formed at the lowermost end of the lower inclined guide surface 23B. The portion 35 abuts on the upper inclined guide surface 23A or the lower inclined guide surface 23B and is guided by the upper locking portion 25A or the lower locking portion 25B.

According to the above configuration, the locked portion 35 is guided to the locking portion 25 by the upper inclined guide surface 23A or the lower inclined guide surface 23B as the movable member 30 moves up and down without any special operation. be. Then, when the engaged portion 35 is positioned higher than the uppermost end of the upper inclined guide surface 23A or lower than the lowermost end of the lower inclined guide surface 23B, the upper engaging portion 35 is engaged. It is locked by the portion 25A or the lower side locking portion 25B. As a result, it is possible to restrict the rotation of the movable member 30 to reduce damage and improve display reliability during normal operation over the longest period of time and high water level when display is most required.

In the water level display device 1 according to this embodiment, the fixing member 20 further has a mounting portion 27, and the upper support portion 21A and the lower support portion 21B are fixed to the mounting portion 27. As shown in FIG.

According to the above configuration, since the mounting portion 27 maintains a constant distance between the upper support portion 21A and the lower support portion 21B, the fixing member 20 can be easily installed.

Moreover, the attachment portion 27 according to the present embodiment extends downward by a predetermined length from the lower end of the lower support portion 21B. By appropriately adjusting the extension length from the lower support portion 21B according to the mounting height of the water level display device 1 and attaching the mounting portion 27 to the side wall S so that the lower end of the mounting portion 27 is in contact with the road surface or the like, the fixing member 20 can be easily installed at the desired height.

<Other embodiments>
The technology disclosed in the present specification is not limited to the above-described embodiments, and includes, for example, the following within its technical scope.

(1) For the display part of the movable member, in order to reduce the influence of the wind when it is maintained at the display position, for example, a mesh-like one that allows the wind to easily pass through, or a spherical one that receives the wind, etc. may be used. good.

(2) The movable member is preferably formed so that the specific gravity of the entire movable member is smaller than that of water, but a portion (for example, the retaining portion 37 in the above embodiment) may be a float.

(3) The movable member may be vertically and rotatably supported on the fixed member by a horizontally extending shaft.

(4) The movable member may be configured such that a portion of the movable member that is different from the engaged portion is guided by contact with an inclined guide surface as the movable member moves vertically, thereby rotating. .

(5) The water level display device is not limited to being attached to an existing structure (side wall S in the above embodiment) at the target point, and may be configured such that the fixing member is erected at the target point. .

(6) The water level display device can be installed not only in a normally dry place such as a road but also in a place where water is normally accumulated. For example, it may be installed at a location where water level monitoring is required, such as a fishing port or a beach, and may be configured to perform display related to the water level at a predetermined height or direction when necessary.

Although preferred embodiments of the water level display device according to the present disclosure have been described above, these are examples and are not intended to limit the scope of the invention. Embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention.

REFERENCE SIGNS LIST 1 Water level display device 20 Fixed member 21 Support part 21A Upper support part 21B Lower support part 23 Inclined guide surface 23A Upper inclined guide surface 23B Lower inclined guide surface 25 Locking portion 25A Upper side Locking portion 25B Lower locking portion 27 Mounting portion 30 Movable member 31 Display portion 32 Display surface 33 Shaft portion 35 Locked portion 37 Retaining portion P Object point (one point)
S... Side wall W... Water level (at object point P) R... Rotating shaft

Claims (3)

A water level display device that provides a display related to the water level at one point,
a fixing member fixed to the point;
a movable member rotatably supported by the fixed member and vertically moved by buoyancy;
The movable member is
a display unit provided with a display surface for performing the display;
a shaft connected to the display;
a locked portion that is locked to the fixing member;
The fixing member is
a support portion that supports the shaft portion so as to be vertically movable and rotatable;
an inclined guide surface provided so as to be inclined with respect to the horizontal direction;
a locking portion that locks the locked portion to restrict rotation of the movable member;
The display unit rotates in contact with the inclined guide surface as the movable member moves up and down, so that the display unit can be moved to an accommodation position in which the display surface is oriented in one direction and to an accommodation position in which the display surface is oriented in the other direction. is displaced between
The locking portion is formed in a slit shape extending vertically from the inclined guide surface,
The water level display device, wherein the locked portion is guided into the locking portion as the movable member moves up and down. A water level display device that provides a display related to the water level at one point,
a fixing member fixed to the point;
a movable member rotatably supported by the fixed member and vertically moved by buoyancy;
The movable member is
a display unit provided with a display surface for performing the display;
a shaft connected to the display;
a locked portion that is locked to the fixing member;
The fixing member is
a support portion that supports the shaft portion so as to be vertically movable and rotatable;
an inclined guide surface provided so as to be inclined with respect to the horizontal direction;
a locking portion that locks the locked portion to restrict rotation of the movable member;
The display unit rotates in contact with the inclined guide surface as the movable member moves up and down, so that the display unit can be moved to an accommodation position in which the display surface is oriented in one direction and to an accommodation position in which the display surface is oriented in the other direction. is displaced between
The locked portion is guided by the locking portion as the movable member moves up and down,
The support section includes an upper support section positioned above and a lower support section positioned below,
The inclined guide surface includes an upper inclined guide surface provided on the lower surface of the upper support and a lower inclined guide surface provided on the upper surface of the lower support,
the engaging portion includes an upper engaging portion formed at the uppermost end of the upper inclined guide surface and a lower engaging portion formed at the lowermost end of the lower inclined guide surface;
As the movable member moves up and down, the locked portion contacts the upper inclined guide surface or the lower inclined guide surface and is guided to the upper locking portion or the lower locking portion . position indicator. The fixing member further has a mounting portion,
3. The water level indicator according to claim 2, wherein said upper support portion and said lower support portion are fixed to said mounting portion.

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