JPH05146319A - Door device - Google Patents

Abstract

PURPOSE:To eliminate inconveniences at a time of opening and closing of a door which opens and closes a display part formed in a table. CONSTITUTION:A display part 26 provided in a table counter 3 is opened and closed by a pair of doors 22 having an arc-shaped cross section. The doors 22 are pivoted by supporting arms 34 so that they can revolve with a center of the arc as a revolution center and get out and in the display part 26 from its sides. The supporting arms 34, when the display part 26 is closed, make both the doors 22 to protrude from the table counter 3 in contact with each other above the display part 26. When the display part 26 is open, both the doors 22 are housed in the table counter 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device which opens and closes an opening with a pair of door bodies.

[0002]

2. Description of the Related Art With the recent development of food culture and westernization of life, parties inside and outside the home have been actively held. As a means of encouraging such parties, not only the taste service by providing food and drink, but also the music effect or the visual effect such as decoration and lighting are indispensable.

For example, Japanese Patent Laid-Open No. 3-191906 (A)
47B37 / 00), a showcase that is opened and closed by an arc-shaped transparent case cover is provided in the center of the counter to display dishes and the like inside.

[0004]

However, the above publication does not show how to open and close the case cover. For example, if the lower end of the case cover is rotated as a fulcrum, it will come into contact with an item on the counter when it is opened, and if the upper end is rotated as a fulcrum, the cover must be lifted while taking out the food inside. I have to. In addition, when it is slid to the left and right, the opening area is limited, and large dishes cannot be taken in and out. In any case, it takes a lot of nerves to open and close the cover and take out food.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a door device which eliminates the inconvenience at the time of opening and closing the door body for opening and closing the display portion formed on the table.

[0006]

A door device D according to a first aspect of the present invention opens and closes a display portion 26 formed on a table (table counter 3) and has a pair of doors each having an arc-shaped cross section. Each of the doors 22 and 22 is rotatable about the center of the circular arc as a center of rotation, and a supporting device that pivotally supports the doors 22 and 22 so as to be retractable from both sides of the display unit 26. When the display section 26 is closed, both door bodies 22 and 22 are projected from the table (table counter 3) so as to abut each other above the display section 26, and when opened, both door bodies 22 and 22 are placed on the table (table counter 3). ) Is stored in.

A door device D according to a second aspect of the present invention opens and closes the display section 26 formed on the table (table counter 3), and has a pair of door bodies 22, 22 each having an arcuate cross section. Both door bodies 22, 22 are pivotally supported around the center of the arc so as to be rotatable and retractable from both sides of the display section 26, and when the display section 26 is closed, both door bodies 22, 22 are displayed. A pair of support arms 34, 34 that abut against each other at the top and store both door bodies 22, 22 inside the table (table counter 3) when opened, and both doors by rotating both support arms 34, 34. A drive means for opening and closing the bodies 22, 22, an elastic connecting member (gas springs 47, 47) for connecting the drive means and the support arms 34, 34, and a direction in which both door bodies 22, 22 are closed. The Are those composed of a damper 49. to exert a force.

[0008]

According to the door device D of the invention of claim 1, both door bodies 2 are
2 and 22 project from both sides of the display section 26 of the table (table counter 3), and the display section 26 is closed in a state where they are butted against each other above the display section 26. When the display section 26 is opened, the door bodies 22 and 22 rotate about the center of the arc of the arc and are stored in the table (table counter 3).

According to the door device D of the second aspect of the present invention, the support arms 34, 34 are rotationally driven by the driving means, so that the door bodies 22, 22 open and close the display section 26. When the bodies 22 and 22 project from both sides of the display unit 26 of the table (table counter 3) and are abutted against each other above the display unit 26, the display unit 26 is closed, and when the display unit 26 is opened, the door body 22 is opened. , 22 are rotated about the center of the arc and are stored in the table (table counter 3). When the doors 22, 22 are closed, the damper 49 acts as a resistance to alleviate the impact at the time of closing, but the displacement of the operation of the drive means and the support arms 34, 34 caused at this time is caused by the elastic connecting members (gas springs 47, 47). ) Absorbs.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a vertical cross-sectional view of a table counter 3 to which the door device D of the present invention is applied, FIG. 2 is a perspective view of the party production device 1, FIG. 3 is a perspective view of the table counter 3, and FIG. 4 is a side view of the door device D. Is. In FIG. 2, the party production device 1 is mainly installed in a party venue such as a wedding ceremony or various anniversaries, and is used for providing various dishes, producing music and light, managing the progress of the party, etc. The kitchen counter 2 and the table counter 3 are mainly used. The kitchen counter 2 has a counter 5 provided on a pedestal 4, and a sink 6 is provided substantially in the center of the counter 5, and an electromagnetic cooker 7 is provided on the side of the sink 6. There is.

In front of the sink 6, there is provided a cover 8 whose central portion extends above the sink 6 in an eaves-like shape in the longitudinal direction. A water tap (not shown) is provided inside the cover 8 so as to extend above the sink 6, and an infrared projection of an infrared switch for controlling discharge of water, hot water or hot water from the water tap is provided on the upper surface of the cover 8. A section 9A is provided. A liquid crystal screen 11 is provided at the center of the front surface of the cover 8 for displaying information on the progress of a party, cooking, and the like, and showcases 12, 1 are provided on both sides of the liquid crystal screen 11.
3 are arranged. The interiors of the showcases 12 and 13 are cooled by an electronic cooling device such as a thermo module (not shown), and foods such as fruits or glasses, small plates, etc. are stored and displayed in the storage. The front openings of the showcases 12 and 13 have a curved cross section and are closed by a door 14 which is rotatable up and down. The door 14 is formed of a liquid crystal glass plate, has a milky white color in a steady state, becomes transparent when a voltage is applied, and is configured so that foods and the like inside can be seen only there. As a result, it is possible to show the inside of the showcases 12 and 13 to the party participants according to the progress situation, and it is possible to improve the effect of production.

A drink case 16 is attached to both front corners of the gantry 4 of the kitchen counter 2. The drink case 16 stores a drink 17 such as wine, and is always stored inside the kitchen counter 2. In that state, the inside is cooled by an electronic cooling device similar to the one described above, and as shown in the figure, it is pushed forward. Beverage 17 is provided. Further, an operation switch section 18 is provided below the cover 8 of the kitchen counter 2, and the organizer operates a switch of the operation switch section 18 or a party such as a magnetic card or the like to a microcomputer of a control device (not shown). Set the program related to the progress and perform arbitrary interrupt operations during the party.

On the other hand, the table counter 3 as a table comprises a pedestal 19 and a counter 21 provided on the pedestal 19, as shown in FIGS. 2, 3 and 7.
Reference numeral 9 includes a fixed portion 19A and an elevating portion 19B that is moved up and down by an elevating mechanism (not shown). The counter 21 is the elevating part 19
It is provided on B and moves up and down as the elevating part 19B moves up and down, and its height can be changed. An opening 31 is formed substantially in the center of the counter 21, and a display portion 26 is formed therein as shown in FIG. 7. The display unit 26 is composed of a heating elevator 27 and a refrigerating elevator 28 arranged on both sides, and an electromagnetic cooker 29 arranged between the elevators 27 and 28. In the gantry 19 of the table counter 3, a storage compartment, which is not heated by a heater, and a refrigerator, which is cooled by a refrigerating device, are compartmentally formed on a partition wall (not shown). The dishes to be served and the dishes to be served by cooling are stored in multiple containers in the refrigerator. The elevator 27 for warming and the refrigerator 28 for refrigerating the food in the hot storage and the refrigerator, respectively, selectively lift the food in the refrigerator to the opening 31 by operating the operation switch unit 18, and display the food in the display unit 26. To operate.

The upper part of the display portion 26 of the table counter 3 is openably and closably closed by the double-opening doors 22 and 22 made of smoked glass which constitute a door device D which will be described in detail later, and the doors 22 and 22 are opened. By doing so, the dishes lifted to the display section 26 by both elevators 27 and 28 are shown to the party participants. Further, a transport rail 23 is laid on the upper surface of the counter 21 around the display unit 26, and the transport rail 23 transports a glass, a tray or the like placed on the rail in a predetermined direction by ultrasonic waves generated by a vibrator (not shown). .. The table counter 3 is attached so as to be orthogonal to the kitchen counter 2 so as to have a T-shape. At this time, the table counter 3 and the kitchen counter 2 are connected to their respective electric circuits and operated or operated by the operation switch section 18. Switch part 18
According to the procedure programmed in advance by the microcomputer, the kitchen counter 2 and the table counter 3 are configured to perform cooking, transporting, displaying, and producing functions.

Next, the door device D of the present invention will be described with reference to FIGS. 1 and 4. Frames 32 and 32 are erected inside the ascending / descending portion 19B of the gantry 19 below the front and rear ends of the opening 31 of the counter 21. A pair of support arms 34, 34 are rotatably supported. The door body 2
The door frames 54, 54 at the lower end portions of the door arms 22 and 22 are fixed to the front ends of the support arms 34, 34 at the front and rear ends thereof. Positioned to match the center of the arc. As a result, both door bodies 22 and 22 are pivotally supported by the support arms 34 and 34 so as to be retractable and retractable above the counter 21 from both side edge portions of the opening 31, respectively.
6 are abutted against each other at the upper part to close the upper part of the display part 26, and are stored in the gantry 19 below the counter 21 to open the entire display part 26.

On the other hand, ball screws 37 extend vertically and are rotatably attached to the frames 32, 32 below the rotation centers 33, 33 by upper and lower bearings 36, 36, respectively. Each ball screw 37, 37 is connected to a motor 42 by a bevel gear box 38, a universal joint 39 and a transmission rod 41 at the lower end thereof, and is configured to rotate synchronously with the rotation of the motor 42. Ball nuts 44, 44 are screwed into the ball screws 37, 37, and horizontal push-up plates 46, 46 are fixed to the ball nuts 44, 44, respectively. Vertical limit switches 52 and 53, which are turned on / off as the push-up plate 46 moves up and down, are provided on one side of the push-up plate 46.
Gas springs 47, 47 as elastic connecting members are rotatably fixed at one ends thereof to both side portions of the push-up plates 46, 46, respectively.
The other ends of 7, 47 are rotatably fixed to the upper support arms 34, 34, respectively. The push-up plates 46, 46 move up and down by the rotation of the ball screws 37, 37, so that the support arms 3 are moved through the gas springs 47, 47.
Reference numerals 4 and 34 are synchronously rotated so that the angles formed with the frame 32 are always the same, and therefore, both door bodies 22 and 22 interlock with each other to perform a double-opening opening / closing operation. .. In addition, the rotation center 33, each frame 32 above the 33,
A damper 49 provided with a return spring 48 is provided at the upper end of 32 so as to extend between the support arms 34, 34 in the horizontal direction.
The abutting portions 51, 51 for the damper 49 are attached to the No. 4. The elevators 27 and 28 are arranged between the frames 32 and 32.

Next, the operation of the door device D will be described with reference to FIGS. 1, 5 and 6. First, in the state of FIG. 1, the door body 22,
22 extends above the counter 21 from both side edges of the opening 31, and their ends are abutted against each other to close the display section 26 above. In this state, the push-up plate 46 is above the ball screw 37, and the upper limit switch 52 is in contact with the push-up plate 46. Further, both ends of the damper 49 are in contact with the contact portions 51, 51 of the support arms 34, 34.

In this state, when the elevators 27 and 28 push food up to the display section 26 and then open the door bodies 22 and 22, for example, a door open switch (not shown) provided in the operation switch section 18 is pushed. Then, a control device (not shown) drives the motor 42 to rotate the ball screw 37 clockwise as viewed from below, that is, in the direction in which it is screwed into the ball nut 44. This rotation causes the ball nut 44 and the push-up plate 46 to descend, so that the gas springs 47, 47 rotate in the direction in which the support arms 34, 34 are pulled down as shown in FIG. 5, and the contact portions 51, 51 are separated from the damper 49. , Eventually the limit switch 5 with the push-up plate 46 downward
When it comes into contact with 3 and is turned on, the control device detects it and stops the motor 42. At this time, the door bodies 22 and 22 are stored in the frame 19 below the counter 21 as shown in FIG.
The end portion is located at the edge of the opening 31 and, as shown in FIG.
6 Open the whole. The gas springs 47, 47 are maintained in the fully extended state during this time, and the damper 49 is returned to the fully extended state by the return spring 48.

The above-mentioned dishes (not shown) are displayed in the display section 26 by the elevators 27 and 28, and the party attendees take out these dishes from the display section 26. At that time, the doors 22 and 22 are as shown in FIG. Since the entire display section 26 is open, the food can be taken out very smoothly.
Further, since the door bodies 22 and 22 are stored below the counter 21, they do not interfere with the articles on the counter 21, and the door bodies 22 and 22 are automatically opened by the motor 42. The trouble of opening the doors 22, 22 with the other hand while holding the food in one hand does not occur.

Next, when closing the door bodies 22 and 22,
When a door closing switch (not shown) provided on the operation switch section 18 is pressed, the motor 42 rotates the ball screw 37 in the opposite direction from the previous time, that is, in the direction of pulling out from the ball nut 44. This rotation causes the ball nut 44 and the push-up plate 46 to rise, so that the gas springs 47, 47 rotate the support arms 34, 34 in the direction of being pushed up as shown in FIG. 5, and the upper ends of the door bodies 22, 22 come out of the opening 31. Go. Soon before, as shown in FIG. 5, the end portions of the door bodies 22, 22 come into contact with each other, the abutting portions 51, 51 become the dampers 4.
Contact both ends of 9.

When the abutting portions 51, 51 come into contact with the damper 49, the damper 49 receives a force in the direction in which it is compressed from both ends. Therefore, a predetermined resistance force is exerted against this force, and the support arms 34, 34 have a predetermined resistance force. It acts so as to reduce the rotation speed and reduce the force for closing the door bodies 22, 22. This makes the door body 2
The impact when the members 2 and 22 collide with each other is mitigated to prevent damage, and damage when a person's hand or arm is caught is reduced.

On the other hand, the abutment of the damper 49 impedes the rotation of the support arms 34, 34, which causes a deviation in the operation of the support arms 34, 34 and the push-up plate 46, which causes the movement of the support arms 34, 34. Is added to the motor 42 as a load. However, the deviation of this operation is absorbed by the gas springs 47, 47.
That is, when the rotation of the support arms 34, 34 lags behind the lifting of the push-up plate 46, a force is applied to the gas springs 47, 47 in the direction of compressing them. The gas springs 47, 47 receive this force and contract due to the elasticity of the gas springs 47, 47, thereby eliminating the overload on the motor 42.

The motor 42 is stopped by the controller when the push-up plate 46 comes into contact with the upper limit switch 52 and is turned on. Further, the damper 49 is gradually compressed thereafter, the gas springs 47, 47 also extend, and the door bodies 22, 22 are butted to close the upper portion of the display portion 26 as shown in FIG. Further, in the embodiment, the driving force of the motor 42 is transmitted to the support arms 34, 34 by the ball screw 37 and the ball nut 44, so that the door bodies 22, 22 are driven by the motor via wires or the like, as compared with the case where the door bodies 22, 22 are driven. Therefore, there is an advantage that the operation can be surely performed without considering the error such as the elongation of the wire.

[0024]

As described above in detail, according to the door device of the present invention, opening and closing of the door body for closing the display portion formed on the table does not interfere with the articles on the table, and when the door body is opened. Since the door is stored in the table, it is possible to smoothly take out the article without obstructing the article taking out from the display section.

Particularly, according to the door device of the second aspect, the door body is automatically opened and closed by the driving means, and the impact of the door body bumping is mitigated by the damper to prevent the door body from being damaged. It is also possible to improve the safety when the arm is caught. Further, since the displacement of the operation between the support arm and the drive means caused by this is absorbed by the elastic connecting member, the overload on the drive means is eliminated and the life of the drive means can be extended.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a table counter as an embodiment to which a door device of the present invention is applied when a door body is closed.

2 is a perspective view of a party effect device including the table counter of FIG. 1. FIG.

3 is a perspective view of the table counter of FIG. 1 in a door closed state.

FIG. 4 is a side view of the door device.

FIG. 5 is a vertical cross-sectional view of the table counter with the door half opened.

FIG. 6 is a vertical cross-sectional view of the table counter with the door body fully opened.

FIG. 7 is a perspective view of a table counter with the door body fully opened.

[Explanation of symbols]

 3 table counter 21 counter 22 door body 26 display section 34 support arm 37 ball screw 42 motor 44 ball nut 46 push-up plate 47 gas spring 49 damper D door device

Claims (2)

[Claims] 1. A door device for opening and closing a display unit formed on a table, wherein a pair of door bodies each have an arcuate cross section, and both door bodies are rotatable about a center of the arc as a rotation center. A support device pivotably supported on both sides of the display part so that the support device can be retracted and retracted. The support device causes both doors to protrude from the table when the display part is closed, and abuts each other above the display part and opens the same. A door device characterized in that sometimes both doors are stored in the table. 2. A door device for opening and closing a display unit configured on a table, wherein a pair of door members each have an arcuate cross section, and both door members are rotatable about a center of the arc as a rotation center. A pair of support arms pivotably supported from both sides of the display section so that they can be retracted and retracted, and when the display section is closed, both doors are butted against each other above the display section, and when the display section is open, both door bodies are stored in a table. Drive means for opening and closing both door bodies by rotationally driving both support arms, an elastic connecting member connecting the drive means and the support arms, and a resistance force in the direction of closing both door bodies. A door device that consists of a damper that works.