JP2021128264A - Plate holder - Google Patents

Abstract

To provide a plate holder which can hold a plate in nearly the same state regardless of how a user has inserted the plate in the plate holder, a trench of the plate holder being easily cleanable.SOLUTION: A trench 11 into which a plate is to be inserted is formed between two walls 12 and 13 of a body 10 of a plate holder 1. A fitting unit 14 having a top part 14a and two foot parts 14b and 14c is formed in a bottom surface of the trench 11, the top part being the highest in a vertical direction in substantially the center part of the body in a width direction and the two foot parts being formed continuously from the top part 14a to both end parts of the body in the width direction and gradually becoming lower. Surfaces of the walls 12 and 13 and the bottom surface of the trench 11 are formed into a mirror surface.SELECTED DRAWING: Figure 4

Description

The present invention relates to a plate holder for displaying an occupied state of a table or the like that can be freely used by an unspecified user or a user specified to some extent, such as a food court or an office meeting corner.

At food courts in large-scale commercial facilities and meeting corners in offices, users are required to place luggage and secure seats and tables. However, in places such as food courts where unspecified people use it, it has been pointed out that there is a risk that luggage may be stolen while the user is away from his / her seat to purchase food and drink. .. In addition, new people who want to use the food court need to go to the side of an unmanned table to check if there is any luggage on the seat or table. Therefore, it has been proposed to install a plate holder on the table and display that the table is already occupied by the user inserting the plate into the plate holder.

Since such a plate holder is installed on the table for a long period of time, dust accumulates in the groove for inserting the plate, foreign matter such as spilled food and drink invades, and mold caused by the adhered food and drink. And germs are expected to propagate. Therefore, it becomes necessary to clean the plate holder on a regular basis. The outer peripheral surface and bottom surface of the plate holder can be cleaned relatively easily, but the width of the groove into which the plate is inserted is narrow, so cleaning the groove portion is not easy. In particular, in the case of a food court in a large-scale commercial facility, in addition to the fact that there are many areas and places that must be cleaned originally, if the plate holder must be cleaned, the burden on the operator becomes even greater. It ends up.

As a technique that can be applied to cleaning the groove of the plate holder, for example, in Patent Document 1, a cleaning card for cleaning the groove of a card reader for reading a magnetic card has a brush for cleaning the groove on a part of the outer peripheral portion of the card. The one provided is proposed. In the case of a card reader, the use of such a cleaning card is effective because the magnetic information is read when the card is inserted into the groove and passed through. Therefore, it is conceivable to remove dust and foreign matter accumulated in the groove of the plate holder by using a dedicated cleaning plate for cleaning the groove of the plate holder.

However, in the case of plate holders installed in food courts and office meeting corners, foreign matter and liquids from spilled food and drink on the bottom of the groove can cause mold and other seedlings to grow, which is more complete. Is required to be cleaned. Even if such a cleaning plate is used to clean the groove of the plate holder, it is not easy to remove dust, foreign matter, liquid, etc. accumulated at the bottom of the groove, especially in the corner, and the operator visually observes it multiple times. The cleaning plate must be passed through the groove of the plate holder, and it cannot be expected that the cleaning efficiency will be improved so much. In addition, since infants are also used in the food court, providing a cleaning brush on the plate may cause hygiene problems.

Also, in the case of a plate holder installed in a food court or an office meeting corner, the plate needs to be confirmed from a distance, so the plate needs to be larger than the plate holder. When a cleaning plate is used for cleaning the groove of the plate holder, the bottom of the groove of the plate holder must be flattened, and it may be difficult to stably hold the plate depending on how the plate is inserted. Therefore, the shape of the bottom of the groove of the plate holder needs to be able to hold the plate in substantially the same state regardless of how the plate is inserted by the user, and is rather not flat. Then, cleaning using a cleaning plate becomes unrealistic.

Furthermore, when the plate holder is installed in a food court or an office meeting corner, not only is it easy to check the plate from a distance, but also which table occupies a monitor device installed in a remote location. It is preferable to be able to display whether or not it is done. Therefore, when the plate is inserted into the plate holder, it is effective to detect the fact and transmit a signal via wireless communication or the like. In that case, the problem is how to secure the power supply for the transmitter circuit in the plate holder. Generally, it is conceivable to provide a battery box at the bottom of the plate holder to supply power from a button battery or the like, but if the liquid spills, the battery may be short-circuited. On the other hand, using an electromagnetic energy conversion device as described in Patent Document 2, power is generated using the mechanical energy when the plate is inserted into the plate holder, and a signal is transmitted using the electric energy. Conceivable. In that case, since it is necessary to provide a displacement member that mechanically contacts and displaces the plate to be inserted into the groove, it is necessary to devise so that the spilled liquid does not easily enter the inside of the plate holder.

Jikkenhei 4-74373 Gazette Special Table 2010-531986

The present invention has been made to solve the above-mentioned problems of the conventional example, and the plate can be held in almost the same state and the groove can be easily cleaned regardless of how the user inserts the plate. It is intended to provide a plate holder. Further, the present invention can detect when a plate is inserted into the plate holder and transmit a signal wirelessly, eliminate the need for battery replacement, and allow spilled liquid to enter the inside. The purpose is to provide a difficult plate holder.

The plate holder according to the present invention
It has a body with a groove formed between two walls facing each other into which a plate is inserted.
A fitting portion is formed on the bottom surface of the groove of the main body, and the fitting portion has a top portion having the highest height in the vertical direction in a substantially central portion in the width direction of the main body, and the fitting portion from the top portion to the main body. It is characterized by having two skirts that are continuously formed over both ends in the width direction and whose height in the vertical direction gradually decreases.

In the vertical cross section in the width direction of the main body, the two skirts may be concave, and the top may be convex or flat.

The two skirts and the top of the bottom surface of the groove may be formed so as to be symmetrical with respect to the center in the width direction of the main body.

In the depth direction of the main body, the width dimension of the upper end portion of the groove in the vertical direction is larger than the width dimension of the bottom surface of the groove in the same direction, and one of the two walls is configured to be substantially vertical. You may.

The surfaces of the two walls and the bottom surface of the groove may be formed in a mirror surface.

The surfaces of the two walls and the bottom surface of the groove may be configured to be water repellent.

With respect to the table surface on which the main body is placed, the lower ends of the two skirts in the vertical direction are configured to be higher than 1/5 of the height of the tops of the two walls. You may.

An opening is formed in one of the two walls, and an electric power is generated inside the main body by a displacement member having a contact portion protruding from the opening toward the groove side and the displacement member coming into contact with the plate and being displaced. A power generation element for power generation and a transmission circuit for transmitting a predetermined signal when electric power is generated by the power generation element may be provided.

In addition, other plate holders according to the present invention
It has a body with a groove formed between two walls facing each other into which a plate is inserted.
An opening is formed in one of the two walls.
Inside the main body, a displacement member whose contact portion projects from the opening toward the groove side, a power generation element that generates electric power when the displacement member contacts and displaces the plate, and electric power generated by the power generation element. A transmission circuit is provided to transmit a predetermined signal when the displacement is generated.
The gap between the opening and the displacement member is set to a size and shape in which the liquid stays between the opening and the displacement member due to surface tension when the liquid enters the gap.
It is characterized by that.

In the state where the plate is not inserted and the state where the plate is inserted, the upper end surface of the contact portion of the displacement member in the vertical direction and the upper end surface of the opening facing the upper end surface are configured to be non-parallel to each other. You may.

In the state where the plate is not inserted and the state where the plate is inserted, the lower end surface of the contact portion of the displacement member in the vertical direction and the lower end surface of the opening facing the lower end surface are configured to be non-parallel to each other. You may.

In the state where the plate is not inserted and the state where the plate is inserted, the left and right end faces of the contact portion of the displacement member in the width direction of the main body and the left and right end faces of the opening facing the left and right end faces are non-parallel to each other. It may be configured as follows.

The gap between the upper end surface of the contact portion and the upper end surface of the opening is the gap between the lower end surface of the contact portion and the lower end surface of the opening, and the gap between the left and right end faces of the contact portion and the left and right end faces of the opening. May be configured such that each of the gaps has an acute angle and at least one or more of the gaps widen from the wall provided with the opening toward the inside of the main body.

In a state where the plate is not inserted, a portion of the displacement member other than the contact portion may be configured to come into contact with the inner side of the main body of the lower end surface of the opening in the vertical direction.

According to the configuration of the plate holder of the present invention, a fitting portion on the plate side is formed on the bottom surface of the groove into which the plate of the main body is inserted, and the fitting portion is perpendicular to the substantially central portion in the width direction of the main body. The highest apex is formed, and two skirts are formed in which the height in the vertical direction gradually decreases continuously from the apex to both ends in the longitudinal direction of the groove. Therefore, a plate other than a plate in which a fitting portion on the plate holder side and a fitting portion that can be fitted is formed at the lower end portion of the plate cannot be inserted into the groove of the plate holder. Further, even if the positions of the fitting portion on the plate side and the fitting portion on the plate holder side are deviated in the width direction of the main body, the convex portion of the fitting portion on the plate side is the skirt of the fitting portion on the plate holder side. It slides along the portion, and the concave portion and the convex portion of the fitting portion on the plate side are fitted to the top portion and the skirt portion of the fitting portion on the plate holder side, respectively. Therefore, the plate can be held in almost the same state regardless of how it is inserted by the user.

Further, since the top and the two skirts are continuously formed in the fitting portion of the bottom surface of the groove of the plate holder, and the surface of the two walls and the bottom surface of the groove are formed in a mirror surface, the bottom surface of the groove is formed. Even if dust or foreign matter accumulates or the liquid gets caught in the groove, the dust, foreign matter or liquid can be easily removed by blowing air or wiping with a cotton swab or tissue paper. In particular, in order to form the surface of the two walls and the bottom surface of the groove in a mirror surface, a parting line is provided on the portion corresponding to the surface of the two walls and the bottom surface of the groove in the mold for resin molding the main body. As a result, there are no burrs due to the resin protruding from the surfaces of the two walls and the bottom surface of the groove, and it is possible to prevent the growth of mold and germs due to the adhesion of the liquid.

Further, according to another configuration of the plate holder of the present invention, an opening is formed in one of the two walls forming the groove into which the plate is inserted, and a displacement in which the contact portion protrudes from the opening to the groove side inside the main body. Since the member, the power generation element that generates electric power when the displacement member comes into contact with the plate and is displaced, and the transmission circuit that transmits a predetermined signal when the electric power is generated by the power generation element are provided, the plate is a plate. A predetermined signal is transmitted when it is inserted into the groove of the holder. A monitor device provided at a remote location receives a predetermined signal, and the table is displayed on the screen of the monitor device by changing the display color of the table corresponding to the plate holder to which the predetermined signal is transmitted. It can be displayed that it is occupied. Moreover, since no battery is used, maintenance is not required as long as the power generation element and the transmission circuit are functioning.

Further, the gap between the opening of the wall of the main body and the displacement member is set to the size and shape in which the liquid stays between the opening and the displacement member due to surface tension when the liquid enters the gap. Even if the liquid is spilled from the top of the holder, it is difficult for the liquid to enter the inside of the main body through the gap between the opening and the displacement member, and the possibility of short-circuiting the power generation element and transmission circuit inside the main body is reduced. Will be done.

The perspective view which shows the use state which inserted the plate into the groove of the plate holder which concerns on one Embodiment of this invention. The perspective view which shows the state which the said plate holder and the corresponding plate are separated. The side view which shows the structure of the said plate holder. The front sectional view which shows the structure of the fitting part with the plate of the said plate holder. FIG. 5 is a side sectional view showing another configuration of the plate holder, showing a state in which the plate is not inserted into the groove of the plate holder. It is a side sectional view which shows the other structure of the said plate holder, and is the figure which shows the state which the plate is inserted in the groove of the plate holder. FIG. 5 is a side sectional view showing a waterproof structure in another configuration of the plate holder, showing a state in which the plate is not inserted into the groove of the plate holder. FIG. 5 is a side sectional view showing a waterproof structure in another configuration of the plate holder, showing a state in which the plate is inserted into the groove of the plate holder. FIG. 5 is a plan sectional view showing a waterproof structure in another configuration of the plate holder. FIG. 5 is a diagram showing a state in which the waterproof structure prevents the ingress of liquid in the other configuration of the plate holder when the plate is not inserted into the groove of the plate holder. The figure which shows how the waterproof structure prevents the invasion of liquid in the state which the plate is inserted into the groove of the plate holder in the other structure of the plate holder. FIG. 5 is a side sectional view showing a waterproof structure in still another configuration of the plate holder, showing a state in which the plate is not inserted into the groove of the plate holder. In still another configuration of the plate holder, the figure shows how the waterproof structure prevents the ingress of liquid when the plate is inserted into the groove of the plate holder.

A plate holder according to an embodiment of the present invention will be described. FIG. 1 shows a usage state in which the plate 2 is inserted into the groove 11 of the main body 10 of the plate holder 1. With the plate 2 inserted in the plate holder 1, the main body 10 of the plate holder 1 is the plate 2 so that the plate 2 and the plate holder 1 do not fall even when the user's body or luggage touches the plate 2. It has a bottom area of about 1/6 to 1/2 of the surface area of the front surface 20 of the above. Further, since the plate holder 1 is often moved to one end of the table when the user uses the table, the groove 11 into which the plate 2 is inserted is in the depth direction (Y direction) of the main body 2. It is provided at a position deviated from the central portion in any direction.

Since the plate 2 needs to be visually recognized from a distance while being held by the plate holder 1, it has an area and a height of a certain value or more, and the dimension H3 in the vertical direction (Z direction) is the width direction (the width direction (Z direction). It is larger than the dimension W2 in the X direction). Further, the width direction dimension W2 of the plate 2 is set to be slightly larger than the width direction dimension W1 of the main body 10 of the plate holder 1. In the example shown in FIG. 1, the plate 2 is substantially rectangular in front view, but is not limited to this, and may have any shape such as a silhouette of an animal or a vehicle. Further, it is sufficient that the fitting portion 22 described later is formed at the lower end portion of the plate 2, and the other portions may be three-dimensional if necessary.

FIG. 2 shows a state when the plate 2 is inserted into the groove 11 of the main body 10 of the plate holder 1 (hereinafter, appropriately abbreviated as “the groove 11 of the plate holder 1”) or when the plate 2 is pulled out from the groove 11. A fitting portion 22 having a shape corresponding to the shape of the bottom surface of the groove 11 of the plate holder 1 is formed at the lower end portion 21 of the plate 2 in the vertical direction, that is, a portion to be inserted into the groove 11 of the plate holder 1. The groove 11 of the plate holder 1 is formed between two walls 12 and 13 facing each other in the depth direction (Y direction) of the main body 10.

FIG. 3 shows a side view of the main body 10 of the plate holder 1. In order to make it easier to insert the plate 2 into the groove 11 of the plate holder 1, the width dimension T1 of the upper end portion of the groove 11 in the vertical direction (Z direction) in the depth direction (Y direction) of the main body 10 is the groove 11 in the same direction. It is set to be larger than the bottom dimension T2. In the configuration example shown in FIG. 3, the walls 12 and 13 are formed so as to be inclined with respect to the center of the groove 11 of the main body 10 in the depth direction (Y direction) of the plate holder 1. However, one of the two walls 12 and 13 may be configured to be substantially vertical. In a food court or the like, since the plate 2 is used by an unspecified user, it is easily damaged and needs to be replaced frequently, so that the plate 2 itself cannot be costly. Therefore, for example, the plate 2 may be made of cardboard or resin having a thickness of about 2 mm, and the plate 2 itself may not be provided with magnetic information or an IC chip. Alternatively, a resin plate 2 in which magnetic information or an IC chip is embedded may be used. In order to prevent the plate 2 from being displaced too much in the depth direction (Y direction) of the main body 10 with the plate 2 inserted in the plate holder 1, the width dimension T2 of the bottom surface of the groove 11 is set to the thickness of the plate 2. On the other hand, it is set to increase by a predetermined tolerance.

FIG. 4 shows a front sectional view (vertical cross section in the width direction of the main body 10 of the plate holder 1) cut at the center of the groove 11 in the depth direction (Y direction) of the main body of the plate holder 1. The fitting portion 14 formed on the bottom surface of the groove 11 has the highest height in the vertical direction (Z direction) in the substantially central portion in the width direction (X direction) of the main body 10 and the main body from the top 14a. It has two skirts 14b and 14c that are continuously formed over both ends in the width direction of 10 and whose height in the vertical direction gradually decreases. In the configuration example shown in FIG. 4, the two skirts 14b and 14c are concave, and the top 14a is flat. Further, the two skirts 14b and 14c and the top 14a of the fitting portion 14 on the bottom surface of the groove 11 are formed symmetrically with respect to the center in the width direction (X direction) of the main body 10. The shapes of the top 14a and the skirts 14b and 14c are not limited to this. For example, the top 14a may be a continuous convex shape such as a semicircle, and the skirts 14b and 14c are straight lines. It may be an inclined surface. Further, the two skirts 14b and 14c and the top 14a do not have to be symmetrical with respect to the center in the width direction (X direction) of the main body 10. Further, the continuously formed connection portion between the top portion 14a and the two base portions 14b and 14c is prevented from having a linear edge so that dust does not easily adhere to the connection portion and mold and germs do not easily grow. The curved surfaces 14d and 14e are formed on the surface.

The main body 10 of the plate holder 1 is formed by resin molding, and the surface of the mold for manufacturing the main body 10 is mirror-finished, and among the molds, burrs due to the protruding resin are not generated. No parting line is provided on the surface of the two walls 12 and 13 and the portion corresponding to the bottom surface of the groove 11. As a result, the surfaces of the two walls 12 and 13 and the bottom surface 14 of the groove 11 are formed in a mirror surface.

The plate holder 1 is used in a food court, an office meeting corner, or the like, and it is assumed that a container containing a liquid is knocked down on the same table and the liquid flows out on the table. At that time, the lower ends of the two skirts 14b and 14c in the vertical direction with reference to the table surface on which the main body 10 of the plate holder 1 is placed so that the liquid does not flow into the groove 11 of the main body 10 of the plate holder 1. Is preferably formed at a certain height or higher than the table surface. Specifically, the height H2 of the two skirts 14b and 14c is higher than 1/5 of the height H1 of the tops of the two walls 12 and 13, more specifically, about about 1/5 of the table surface. The position is preferably 10 mm or more higher. Further, the height H1 of the uppermost portions of the two walls 12 and 13 is preferably about 40 to 50 mm. Further, even when the liquid flows into the groove 11 of the main body 10 of the plate holder 1, the main body 10 such as the surfaces of the two walls 12 and 13 and the bottom surface of the groove 11 can be quickly discharged from the groove 11. The surface of the water repellent treatment may be applied.

According to the plate holder 1 of the present invention shown in FIGS. 1 to 4, the height of the fitting portion 14 on the bottom surface of the groove 11 of the main body 10 into which the plate 2 is inserted is perpendicular to the substantially central portion in the width direction of the main body 10. The highest top 14a is formed, and two skirts 14b and 14c whose vertical height gradually decreases continuously from the top 14a to both ends of the groove 11 in the width direction of the main body 10 are formed. Therefore, it cannot be inserted into the groove 11 of the plate holder 1 except for the one in which the fitting portion 22 having a shape corresponding to the fitting portion 14 is formed at the lower end portion of the plate 2. Even if the fitting portion 22 at the lower end of the plate 2 and the fitting portion 14 of the groove 11 of the plate holder 1 are misaligned in the width direction (X direction) of the main body 10, the lower end 21 of the plate 2 is fitted. The convex portion of the joint portion 22 slides down along the fitting portion 14 on the bottom surface of the groove 11 of the plate holder 1, and the concave portion and the convex portion of the fitting portion 22 on the plate 2 side are the grooves of the plate holder 1, respectively. It is fitted to the top 14a and the skirts 14b and 14c of the fitting portion 14 of 11 respectively. Therefore, the plate holder 1 can hold the plate 2 in substantially the same state regardless of how the plate is inserted by the user. The shape of the fitting portion 22 on the plate 2 side may be such that when it is inserted into the groove 11 of the plate holder 1, it can come into contact with the skirt portion 14b or 14c of the fitting portion 14 of the groove 11 of the plate holder 1 at at least two places. The shape may be similar to or different from the shape of the fitting portion 14 of the groove 11 of the plate holder 1.

Further, the top 14a of the bottom surface of the groove 11 of the main body 10 of the plate holder 1 and the two skirts 14b and 14c are continuously formed, and the surfaces of the two walls 12 and 13 and the bottom surface 14 of the groove 11 are also smooth. Moreover, since it is continuously formed on a mirror surface, even if dust or foreign matter accumulates on the bottom surface of the groove 11 or liquid gets on the groove 11, air is blown or wiped off with a cotton swab or tissue paper. Therefore, these dusts, foreign substances, liquids and the like can be easily removed. In particular, in order to form the surfaces of the two walls 12 and 13 of the main body 10 and the bottom surface of the groove 11 in a mirror surface, the bottom surfaces of the two walls 12 and 13 and the groove 11 of the mold when the main body 10 is resin-molded are formed. Since it is not possible to provide a parting line at the corresponding portion, as a result, there are no burrs due to the protruding resin on the surfaces of the two walls 12 and 13 and the bottom surface of the groove 11, and mold and germs due to the adhesion of liquid are not present. Can be prevented from breeding.

If the plate holder 1 only needs to be able to visually recognize that the plate 2 is inserted from a distance, it is not necessary to provide the plate holder 1 itself with a function of detecting that the plate 2 is inserted. On the other hand, when the plate holder 1 is installed in a food court, a meeting corner in an office, or the like, it is preferable that a monitor device or the like installed in a distant place can display which table is occupied. In the configuration example shown in FIGS. 5 and 6, when the plate 2 is inserted into the groove 11 of the plate holder 1, it is detected that the plate 2 is inserted and a predetermined signal is wirelessly transmitted. There is.

FIG. 5 shows a state in which the plate 2 is not inserted into the groove 11 of the plate holder 1. An opening 12a is provided in one wall 12 of the main body 10 of the plate holder 1. The position and number of the openings 12a on the wall 12 are not particularly limited, but for example, two openings 12a may be provided symmetrically with respect to the center in the width direction (X direction) of the main body 10. Inside the main body 10, a displacement member 15 that swivels around a horizontal rotation shaft 15b provided in the width direction (X direction) of the main body 10 is provided. The displacement member 15 has a substantially L shape in a side view, and a contact portion 15a protruding from the opening 12a of the wall 12 of the main body 10 toward the groove 11 side is formed in the vicinity of the upper end portion of the displacement member 15 in the vertical direction. Has been done. A coil spring 17 is engaged with the lower end portion of the displacement member 15 in the vertical direction and the end portion 15c on the opposite side of the rotating shaft 15b, and the contact portion 15a moves from the opening 12a of the wall 12 of the main body 10 to the groove 11 side. It is urged to protrude.

Further, inside the main body 10 of the plate holder 1, a circuit provided with a transmission circuit that transmits a predetermined signal when the plate 2 is inserted into the groove 11 and a power generation element for securing a power source for the transmission circuit. A module 16 is provided. The circuit module 16 is provided so that the swivel lever 16a protrudes, and the swivel lever 16a is engaged with the displacement member 15. As the power generation element, for example, a coil and a magnet are relatively moved by the rotation (displacement) of the swivel lever 16a to generate an electric current by an electromagnetic induction phenomenon, or a pressure is applied to the piezoelectric element by the displacement of the swivel lever 16a to make piezoelectric. It is conceivable that a voltage is generated depending on the effect. In either method, since the power generation element is connected to the transmission circuit, when a current or voltage is generated in the power generation element, a current flows through the transmission circuit and a predetermined signal is transmitted.

FIG. 6 shows a state in which the plate 2 is inserted into the groove 11 of the plate holder 1. As described above, the width dimension T2 of the bottom surface of the groove 11 of the plate holder 1 is only a predetermined difference with respect to the thickness of the plate 2. Therefore, when the plate 2 is inserted into the groove 11, one of the plates 2 is inserted. The surface comes into contact with the contact portion 15a of the displacement member 15 projecting from the opening 12a of the wall 12 of the main body 10 toward the groove 11. Due to the contact between the surface of the plate 2 and the contact portion 15a of the displacement member 15, the contact portion 15 retracts from the wall 12 to the inside of the main body portion 10, and the displacement member 15 rotates about the rotation shaft 15b accordingly. Along with the rotation of the displacement member 15, the rotation lever 16a of the power generation module 16 also rotates, whereby electric power is generated by the power generation element, and a predetermined signal is transmitted from the transmission circuit. When the monitor device (not shown) receives a predetermined signal from the plate holder 1, among the plurality of tables displayed on the monitor screen, the display color of the table corresponding to the plate holder 1 to which the predetermined signal is transmitted is displayed. It can be displayed that the table is occupied by changing it.

When the plate 2 is pulled out from the groove 11 of the plate holder 1, the displacement member 15 is swiveled in the opposite direction by the elastic force of the coil spring 17, and the swivel lever 16a of the power generation module 16 is also swiveled in the opposite direction. Whether the power generation element utilizes an electromagnetic induction phenomenon or a piezoelectric effect, when the swivel lever 16a swivels in the opposite direction, a current or voltage in the opposite direction is generated. If the transmitting circuit is configured to generate a different signal depending on the direction of the current or voltage generated by the power generation element, when the monitoring device receives a signal different from the predetermined signal from the plate holder 1, it is displayed on the screen. It is possible to display that the occupancy of the table has been released by changing the display color of the table corresponding to the plate holder 1 displayed on the plate holder 1 again. Further, since the power generation element is used as the power source, no battery is required, and maintenance is not required unless the power generation module 16 breaks down.

The displacement member 15 rotates about the rotation shaft 15b by an angle η when the contact portion 15a comes into contact with the plate 2 and is displaced. Therefore, in order to obtain a larger turning angle by the displacement of the contact portion 15a, it is preferable to shorten the distance from the rotating shaft 15b to the contact portion 15a. For that purpose, it is preferable that the position of the opening 12a provided on the wall 12 of the main body 10 is as low as possible and close to the bottom surface of the groove 11. Further, more preferably, the rotating shaft 15b is configured to be located directly below the contact portion 15a.

In the configuration of the plate holder 1 shown in FIGS. 5 and 6, since the opening 12a is formed in one of the two walls 12 and 13 of the main body 10 forming the groove 11, for example, from above the main body 10. When a liquid such as water is applied, it is necessary to prevent the liquid from entering the inside of the main body 10 through the gap between the opening 12a and the contact portion 15a of the displacement member 15. FIG. 7 is an enlarged view showing a waterproof structure provided between the opening 12a of the wall 12 of the main body 10 and the contact portion 15a of the displacement member 15 in a state where the plate 2 is not inserted into the plate holder 1 shown in FIG. be. Inside the main body 10, a substantially concave internal sealing member 18 is mounted so as to surround the opening 12a with the opening facing downward, and the inclined surface 18b of the opening of the internal sealing member 18 opens. It is formed so as to be continuous with the upper end surface 12b of 12a. Instead of the internal seal member 18, the wall 12 of the main body 10 may be thickened to form the inclined surface 18b continuously and integrally with the upper end surface 12b of the opening 12a. As is clear from FIG. 7, the upper end surface 15d of the contact portion 15a of the displacement member 15 in the vertical direction, the upper end surface 12b of the opening 12a facing the upper end surface 15d, and the inclined surface 18b of the internal sealing member 18 are not mutually exclusive. It is parallel. The gap between the upper end surface 15d of the contact portion 15a of the displacement member 15 and the upper end surface 12b of the opening 12a of the wall 12 and the gap between the upper end surface 15d of the contact portion 15a of the displacement member 15 and the inclined surface 18b of the internal sealing member 18 are walls. It widens from 12 toward the inside of the main body 10. Similarly, the lower end surface 15e of the contact portion 15a of the displacement member 15 in the vertical direction and the lower end surface 12c of the opening 12a facing the lower end surface 15e are non-parallel to each other. The gap between the lower end surface 15e of the contact portion 15a of the displacement member 15 and the lower end surface 12c of the opening 12a of the wall 12 also widens from the wall 12 toward the inside of the main body 10. Further, a portion of the displacement member 15 other than the contact portion 15a, for example, a portion of the contact portion 15a below the lower end surface 15e is an inner peripheral surface 12f on the side opposite to the groove 11 of the wall 12 and the inner peripheral surface thereof. It may be configured to come into contact with the contact surface 15h of the displacement member 15 facing 12f. In that case, the contact surface 15h of the displacement member 15 and the inner peripheral surface 12f of the wall 12 function as a stopper for the rotation of the displacement member 15 by the coil spring 17. The angle α1 formed by the upper end surface 15d of the contact portion 15a of the displacement member 15 and the upper end surface 12b of the opening 12a of the wall 12, and the angle formed by the lower end surface 15e of the contact portion 15a of the displacement member 15 and the lower end surface 12c of the opening 12a of the wall 12. The angle θ1 formed by the upper end surface 15d of the contact portion 15a of the displacement member 15 and the displacement member 15 and the inclined surface 18b of the internal sealing member 18 is an acute angle, and the range of 5 ° <α1, β1, θ1 <30 ° is preferable. Further, in this state, θ1 <α1 <β1.

FIG. 8 is an enlarged view showing a waterproof structure provided between the opening 12a of the wall 12 of the main body 10 and the contact portion 15a of the displacement member 15 when the plate 2 is inserted into the plate holder 1 shown in FIG. .. As is clear from FIG. 8, the upper end surface 15d of the contact portion 15a of the displacement member 15 in the vertical direction, the upper end surface 12b of the opening 12a facing the upper end surface 15d, and the inclined surface 18b of the internal sealing member 18 are not mutually exclusive. It is parallel. Similarly, the lower end surface 15e of the contact portion 15a of the displacement member 15 in the vertical direction and the lower end surface 12c of the opening 12a facing the lower end surface 15e are non-parallel to each other. The angle α2 formed by the upper end surface 15d of the contact portion 15a of the displacement member 15 and the upper end surface 12b of the opening 12a of the wall 12, and the angle formed by the lower end surface 15e of the contact portion 15a of the displacement member 15 and the lower end surface 12c of the opening 12a of the wall 12. The angle θ2 formed by the upper end surface 15d of the contact portion 15a of the displacement member 15 and the displacement member 15 and the inclined surface 18b of the internal sealing member 18 is an acute angle, and the range of 5 ° <α2, β2, θ2 <30 ° is preferable. Further, in this state, α2> β2 <θ2. If the rotation angle of the displacement member 15 due to the plate 2 being inserted into the plate holder 1 is η, then α2 = α1 + η, θ2 = θ1 + η, and β2 = β1-η. Further, the angle θ2 formed by the upper end surface 15d of the contact portion 15a of the displacement member 15 and the inclined surface 18b of the internal sealing member 18 when the plate 2 is inserted into the plate holder 1 is the displacement when the plate 2 is not inserted. It is configured to be substantially equal to the angle α1 formed by the upper end surface 15d of the contact portion 15a of the member 15 and the upper end surface 12b of the opening 12a of the wall 12.

FIG. 9 shows a horizontal cross section showing a waterproof structure provided between the opening 12a of the wall 12 of the main body 10 and the contact portion 15a of the displacement member 15. Since the contact portion 15a of the displacement member 15 is not displaced in the horizontal direction, as shown in FIG. 9, the main body 10 is in both the state where the plate 2 is not inserted into the plate holder 1 and the state where the plate 2 is inserted. The left and right end faces 15f and 15g of the contact portion 15a of the displacement member 15 in the width direction and the left and right end faces 12d and 12e of the opening 12a facing the left and right end faces 15f and 15g are non-parallel to each other. Similarly, the left and right end faces 15f and 15g of the contact portion 15a of the displacement member 15 and the left and right end faces 18d and 18e of the internal sealing member 18 facing the left and right end faces 15f and 15g are non-parallel to each other. The gap between the left and right end faces 15f and 15g of the contact portion 15a of the displacement member 15 and the left and right end faces 12d and 12e of the opening 12a of the wall 12 widens from the wall 12 toward the inside of the main body 10. Similarly, the gap between the left and right end faces 15f and 15g of the contact portion 15a of the displacement member 15 and the left and right end faces 18d and 18e of the internal sealing member 18 widens from the wall 12 toward the inside of the main body 10. The angles γ formed by the left and right end faces 15f and 15g of the contact portion 15a of the displacement member 15 and the left and right end faces 12d and 12e of the opening 12a of the wall 12 are both acute angles, and the range of 5 ° <γ <30 ° is preferable. Similarly, the angles formed by the left and right end faces 15f and 15g of the contact portion 15a of the displacement member 15 and the left and right end faces 18d and 18e of the internal seal member 18 are also set to γ.

FIG. 10 shows a state in which the plate 2 is not inserted into the groove 11 of the plate holder 1 and a state in which a liquid such as water is hung in the groove 11 of the plate holder 1. The liquid flows on the surfaces of the walls 12 and 13 and most of them flow down to both sides of the main body of the plate holder 1 along the two skirts 14b and 14c of the fitting 14 on the bottom surface of the groove 11, but some of the walls. The liquid enters the gap between the opening 12a of the 12 and the contact portion 15a of the displacement member 15. Further, FIG. 11 shows a state in which the plate 2 is inserted into the groove 11 of the plate holder 1 and a state in which a liquid such as water is applied to the groove 11 of the plate holder 1. The liquid flows along the surfaces of the walls 12 and 13 forming the groove and the surface of the plate 2, most of which is the body of the plate holder 1 along the two skirts 14b and 14c of the fitting 14 on the bottom surface of the groove 11. Although it flows down to both sides of the portion, a part of the portion penetrates into the gap between the opening 12a of the wall 12 and the contact portion 15a of the displacement member 15. However, in either case, the liquids W1 to W3 stay in the gap between the opening 12a of the wall 12 and the contact portion 15a of the displacement member 15 or between the contact portion 15a and the plate 2 due to surface tension, and stay inside the main body 10. Do not invade. Therefore, the possibility that the power generation element or the transmission circuit provided inside the main body 10 is short-circuited and breaks down is reduced.

FIG. 12 shows a modified example of the opening 12a formed in the wall 12 of the main body 10 of the plate holder 1. In the modified example shown in FIG. 12, the gap between the lower end surface 15e of the contact portion 15a of the displacement member 15 and the lower end surface 12c of the opening 12a of the wall 12 becomes wider from the wall 12 toward the outside of the main body 10, that is, toward the groove 11. ing. The angle β3 formed by the lower end surface 15e of the contact portion 15a of the displacement member 15 and the lower end surface 12c of the opening 12a of the wall 12 is also an acute angle, and the range of 5 ° <β3 <45 ° is preferable. Further, in the portion below the lower end surface 15e of the contact portion 15a of the displacement member 15, the inner peripheral surface 12f on the side opposite to the groove 11 of the wall 12 and the displacement member 15 facing the inner peripheral surface 12f are hit. The contact with the contact surface 15h is the same as the configuration example shown in FIG. 7, but the lower internal sealing surface 15i below the contact surface 15h is inclined by an angle τ1 with respect to the inner peripheral surface 12f of the wall 12. The gap between the lower internal sealing surface 15i of the displacement member 15 and the inner peripheral surface 12f of the wall 12 widens from the contact surface 15h toward the inside of the main body 10.

FIG. 13 shows a state in which the plate 2 is inserted into the groove 11 of the plate holder 1 and a state in which a liquid such as water is hung in the groove 11 of the plate holder 1. By inserting the plate 2 into the groove 11 of the plate holder 1, the displacement member 15 is rotated by an angle η, so that the angle of the wall 12 of the displacement member 15 with respect to the inner peripheral surface 12f is τ2 (τ2 = τ1-η). Is reduced to. Here, it is set in the range of 5 ° <τ2 <30 °. The liquid W2 that has entered the gap between the lower end surface 15e of the contact portion 15a of the displacement member 15 and the lower end surface 12c of the opening 12a of the wall 12 has an inner peripheral surface 12f on the opposite side of the groove 11 of the wall 12 due to surface tension. It stays between the contact surface 15h of the displacement member 15 facing the inner peripheral surface 12f. Therefore, the possibility that the power generation element or the transmission circuit provided inside the main body 10 is short-circuited and breaks down is reduced.

In addition, in FIGS. 5 to 13, the fitting portion of the bottom surface of the groove 11 of the main body 10 of the plate holder 1 is not particularly mentioned, but as shown in FIGS. A top 14a having the highest vertical height is formed in the portion, and two base portions whose vertical height gradually decreases from the top 14a to both ends of the groove 11 in the width direction of the main body 10. The fitting portion 14 in which the 14b and 14c are formed may be formed.

The use of the plate holder according to the present invention is not limited to the food court of a large-scale commercial facility or the meeting corner of an office as described above, and is used, for example, to display the attendance of members of the Diet. Is also possible. Generally, when a member of the Diet attends a parliament, he puts up a name tag on his seat, and when he leaves, he knocks down the name tag. In the Parliament building, when a member of the Diet puts up his name tag on the table, it is recorded that the light sensor worked and attended, and when the name tag was knocked down, it was recorded that the light sensor worked and left. NS. In addition, since the sensor integrated with the voting button and display is fixed on the table, maintenance is difficult and the position of the name tag cannot be moved freely, which may be inconvenient when expanding the materials. Be done. In addition, it is difficult to introduce the same equipment as the Diet to local councils with a small budget. Therefore, by using the plate holder according to the present invention for confirming the attendance of a member of the Diet, it is possible to introduce a system for displaying attendance and recording attendance at low cost.

In addition, some fast food chains offer a service where customers order food, then start cooking, and deliver the finished food to their seats. At that time, the customer is handed a number tag integrated with a plate holder to be placed on the table, and the clerk delivers the finished dish while searching for the number written on the plate holder. However, as is well known, the number tag integrated with the plate holder is very difficult to hold, and it gets in the way when you have a large baggage. Therefore, the plate holder according to the present invention may be installed on each table, and the plate corresponding to the plate holder according to the present invention may be handed to the customer as a number tag.

1 Plate holder 2 Plate 10 Main body 11 Groove 12 (Forming a groove) Wall 12a Opening 12b Upper end surface of the opening 12c Lower end surface of the opening 12d, 12e Left and right end surfaces of the opening 12f Inner peripheral surface 13 of the wall 1 (Forming a groove) ) Wall 14 (on the plate holder side) Fitting part 14a Top 14b, 14c Bottom part 15 Displacement member 15a Contact part 15b Rotating shaft 15d Upper end surface of contact part 15e Lower end surface of contact part 15f, 15g Left and right end surfaces of contact part 15h Contact surface of displacement member 15i Lower internal seal surface 16 Circuit module 16a Swing lever 17 Coil spring 18 Internal seal member 18b Inclined surface 18d, 18e Left and right end surfaces of internal seal member

Claims (14)

A plate holder having a body having a groove formed between two walls facing each other into which a plate is inserted.
A fitting portion is formed on the bottom surface of the groove of the main body, and the fitting portion has a top portion having the highest height in the vertical direction in a substantially central portion in the width direction of the main body, and the fitting portion from the top portion to the main body. A plate holder characterized by having two skirts that are continuously formed over both ends in the width direction and whose height in the vertical direction gradually decreases. The plate holder according to claim 1, wherein the two skirts are concave and the top is convex or flat in a vertical cross section in the width direction of the main body. The plate holder according to claim 1 or 2, wherein the two skirts and the top of the bottom surface of the groove are formed symmetrically with respect to the center in the width direction of the main body. The width dimension of the upper end portion of the groove in the vertical direction in the depth direction of the main body is larger than the width dimension of the bottom surface of the groove in the same direction, and one of the two walls is substantially vertical. The plate holder according to any one of claims 1 to 3. The plate holder according to any one of claims 1 to 4, wherein the surface of the two walls and the bottom surface of the groove are formed on a mirror surface. The plate holder according to any one of claims 1 to 5, wherein the surfaces of the two walls and the bottom surface of the groove are water-repellent. The lower ends of the two skirts in the vertical direction are located at a position higher than 1/5 of the height of the uppermost parts of the two walls with respect to the table surface on which the main body is placed. The plate holder according to any one of claims 1 to 6. An opening is formed in one of the two walls, and an electric power is generated inside the main body by a displacement member having a contact portion protruding from the opening toward the groove side and the displacement member contacting and displacementing the plate. The plate holder according to any one of claims 1 to 7, wherein a power generation element for power generation and a transmission circuit for transmitting a predetermined signal when electric power is generated by the power generation element are provided. A plate holder having a body having a groove formed between two walls facing each other into which a plate is inserted.
An opening is formed in one of the two walls.
Inside the main body, a displacement member whose contact portion projects from the opening toward the groove side, a power generation element that generates electric power when the displacement member contacts and displaces the plate, and electric power generated by the power generation element. A transmission circuit is provided to transmit a predetermined signal when the displacement is generated.
The gap between the opening and the displacement member is set to a size and shape in which the liquid stays between the opening and the displacement member due to surface tension when the liquid enters the gap. Plate holder. When the plate is not inserted and the plate is inserted, the upper end surface of the contact portion of the displacement member in the vertical direction and the upper end surface of the opening facing the upper end surface are not parallel to each other. The plate holder according to claim 9. When the plate is not inserted and the plate is inserted, the lower end surface of the contact portion of the displacement member in the vertical direction and the lower end surface of the opening facing the lower end surface are not parallel to each other. The plate holder according to claim 9 or 10. In the state where the plate is not inserted and the state where the plate is inserted, the left and right end faces of the contact portion of the displacement member in the width direction of the main body and the left and right end faces of the opening facing the left and right end faces are non-parallel to each other. The plate holder according to any one of claims 9 to 11. The gap between the upper end surface of the contact portion and the upper end surface of the opening is the gap between the lower end surface of the contact portion and the lower end surface of the opening, and the gap between the left and right end faces of the contact portion and the left and right end faces of the opening. 9 to 12, wherein each of the gaps has an acute angle and at least one or more of the gaps widen from the wall provided with the opening toward the inside of the main body. The plate holder according to any one item. Claims 9 to 13, wherein, in a state where the plate is not inserted, a portion of the displacement member other than the contact portion comes into contact with the inner side of the main body of the lower end surface of the opening in the vertical direction. The plate holder according to any one item.

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