JPH0433205B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a lifting mechanism for an automatic door in a storage case or storage for heat preservation, cold preservation, refrigeration, or freezing.

In particular, the almost vertical door of the case or storage is placed in the space where the front sight line and the storage space are blind spots, that is, the space under the ceiling of the shelf of the case or storage.
Moreover, it is intended to be accommodated mechanically smoothly.

In addition to refrigeration and freezing, storage cases or storage boxes are increasingly used in fields that require heat or cold insulation. i.e. hamburger,
With the increase in the number of stores selling boxed lunches and side dishes, and energy and labor savings, there is a need for show cases with doors that open and close automatically.

In addition, hospitals and pharmacies that handle medical products, medicines, fungi, etc., and laboratories that research biotechnology require storage to keep these items cool or warm. If you frequently take out the items inside the case or storage, leave the door open, but in this case,
Energy is wasted in keeping the storage case or storage room warm or refrigerated.

Also, if you do not take items in and out frequently,
The door is kept closed to save energy, but if you are holding many things in your hands, you will not be able to open the door.

Further, in hospitals, pharmacies, or laboratories, it may be desirable to take items in and out of storage without touching the door after disinfecting hands.

Therefore, the applicant of this patent has developed a method that is convenient for such cases, has low energy loss, is hygienic, and is convenient for such cases.
We have proposed various cases or storage cabinets whose doors open and close automatically when a person approaches.

[Conventional technology]

FIG. 4 is a schematic explanatory diagram of a conventional example, and is a side sectional view of a case or storage.

In the figure, 30 is a glass door, 31 is a main stem, one end 33 of which is rotatably fixed to a side wall (not shown), and the other end 34 is rotatably fixed to the door 30. Reference numeral 32 denotes a driven stem, one end 35 of which is rotatably fixed to a side wall at a location a little apart from one end 33 of the main stem, and the other end 36 is rotatable to the door 30 a little apart from the other end 34 of the main stem 31. is fixed. Reference numeral 37 indicates the interior of the storage case or storage.

In a show case or storage with such a configuration, when the rotating shaft of one end 33 of the main stem is rotated by a decelerated motor, the door 30 starts to rotate around the one end 33, and the driven stem 32 also rotates at one end. 35
Start rotating around the axis. The final result is as shown by the dotted line in FIG.

[Problem to be solved by the invention]

However, in the case or storage case described above, if the rotation center of the main stem or the length of the driven stem are not properly arranged, the top edge of the door will not move almost horizontally and will draw a large arc, making it difficult to store it. There was a problem that the storage space became smaller.

In addition, when the door draws a large arc, it not only looks bad, but also causes problems with the mechanism and malfunctions because the door does not move smoothly.

In order to solve the above problems, the present invention has the following features:
The top edge of the door should be able to move as horizontally as possible to make the space more efficient in the cabinet, the door moves smoothly and looks good, and customers and users are not surprised by the movement or sound of the door when they open it. The purpose of this invention is to provide a lifting mechanism for a show case or storage.

Another object of the present invention is to provide a lifting mechanism for a show case or a storage compartment that not only reduces failures by mechanically moving the door smoothly, but also requires less driving energy.

[Means to solve the problem]

In order to achieve the above objects, the present invention has the following features:
In the automatic door lifting mechanism of the show case, which detects the approach of a person, the door installed almost vertically in front of the show case moves its upper end almost horizontally along the lower part of the ceiling and lifts the entire door upwards. is rotatably provided on the side wall of the show case, and the other end is rotatably attached to the door, and the main stem for driving the door has a slider in the middle, and one end is rotatably attached to the side wall of the show case at a position a little away from the center of rotation of the main stem. A link A is freely provided, and the other end is connected to the slider on the main stem, and one end is connected to the slider, and the other end is rotatable to a door located a little distance from the main stem. It consists of link B provided at

In addition, the present invention provides that the shelves of the show case are multi-tiered, and the above-mentioned automatic doors are provided for each shelf, and that these automatic doors can be opened and closed individually or synchronously, and that the push and pull of the sliders is This is done by a link sliding around a cam fixedly provided at one end, and the left and right main stems are connected by at least one of a gear, a chain, and a shaft that passes through the inside of the show case. In particular, the show case is of a multi-stage type, with a plurality of doors having different inclinations.

Furthermore, the present invention includes a storage having each of the above-mentioned configurations in order to achieve the above-mentioned objects.

[Effect]

Since the present invention has the above-described configuration, when a person approaches the show case or the storage, the sensor detects this and the drive mechanism that drives the main stem is activated to rotate the main stem counterclockwise.

When the main stem starts rotating around its drive shaft, the door attached to the other end of the main stem will
It rises upward while drawing an arc.

At this time, the other link A, one of which is rotatably fixed at a location slightly apart from the drive shaft of the main stem, is slid above the main stem by a slider. As a result, the link B pushes up the lower end of the door, and the upper end of the door rotates counterclockwise and is rapidly drawn into the ceiling inside the show case or storage, thereby avoiding collision with the ceiling.

When the main stem continues to rotate counterclockwise around the drive shaft, the speed at which the slider moves upward becomes slower, and the speed at which the top end of the door rotates counterclockwise also becomes slower.

When the main stem passes the center of rotation of link A, the slider begins to move downward toward the drive shaft of the main stem, and at this point the door begins to temporarily rotate clockwise.
The top edge of the door faces upward. Thereafter, the door is rotated counterclockwise, and the upper end of the door advances linearly almost horizontally as a whole and is stored in the upper part of the ceiling.

As described above, the present invention was designed by inputting the movements of the main trunk, slider, and links, or the positions of their rotational axes into a computer as models, and simulating these movements, so that the movement of the door is mechanically controlled. In addition to being smooth, the door can be stored in a storage case or in the attic, which is a blind spot in a storage room.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 3. Figure 1 is a side sectional view of the multi-stage show case, Figure 2 is a diagram explaining the structure of the slider installed in the main trunk that drives the automatic door, and Figure 3
The diagram shows the door, main trunk, slider A and slider B
This is a computer-generated diagram illustrating the movement of the robot.

In the diagram, 1 to 3 are the front glass doors of the case or storage, the door 1 is almost vertical, and the door 2 and 3 are
As you approach the door, the angle changes to make it easier for customers or users to see inside.

4 is the main shaft, and one end 5 of it is a rotatable drive shaft fixed to the side wall of the show case or storage;
The other end 6 of the main stem is rotatably attached to a support 11 provided on the back surface of the glass door 1.

A link 8 is made up of two parts A and B, and is attached to a slider 7 provided in the middle of the main trunk 4, so that the lengths of the links A and B can be changed. One end 9 of the link A is rotatably attached to the side wall of the show case or storage at a location slightly apart from the drive shaft 5, and the other end is attached to the slider 7 as shown in FIG. It is pivotally attached to the pivot shaft 25.

Further, as shown in FIG. 2, one end of the link B is pivotable on a pivot shaft 25 of the slider 7, and the other end 10 is a support 11 provided on the glass door 1, and the other end is a support 11 provided on the glass door 1. It is rotatably attached at a location a little apart from the rotation shaft 6 of. The slider 7 is connected to the master 4 as shown in FIG.
It has a structure that allows it to slide freely on the top of the screen. Therefore, in FIG. 2, the main trunk 4 is shown as having a columnar shape and the slider 7 is shown as being cylindrical, but various other known shapes such as a square shape are possible.

The rotation shaft 9 of the link A is located below the drive shaft 5 of the main trunk 4, as shown in FIG. It's above. Further, as shown in FIG. 3B, the rotation axis 9 of the link A is located above the drive shaft of the main stem 4, and the rotation axis 10 of the link B is located below the rotation axis 6 of the main stem 4. It is in.

The rotation axis of this link A can be any of those shown in Fig. 3A and B, and these figures include the door 1, main stem 4, drive shaft 5, main stem rotation axis 6, link A, link B shows the loci of these rotational axes 9 and 10 drawn by a copying machine simulation.

At this time, one end of the link is provided so as to be slidable toward the rotating shaft of the main stem 4, and a cam (not shown) is fixedly attached to the rotating shaft of the main stem 4.
The link can also be pushed up by sliding the slide (not shown) around the link.

Further, it is better to provide a pair of the main trunk 4, link A, link B, and slider 7 on the left and right sides, but it is not necessarily necessary to provide a pair of them, and one may be used. When a pair of left and right drive shafts are provided, it is necessary to synchronize them, and as a means for achieving this, a gear, a chain, or a single shaft connecting the left and right drive shafts may be used.

Reference numerals 12 to 14 indicate shelves in a multi-stage show case or storage.

Reference numeral 15 is a place for storing a freezer, a refrigerator, a heat-retaining device, etc., and although not shown, cooling pipes, heaters, etc. are placed either on the back of each chamber 16 to 18 or on the top and bottom surfaces of shelves 12 to 14. Yes, it goes without saying.

19 is the top of the show case or storage, 2
0 is the back of the case or storage, 21
22 is the front side of the case or storage, and 22 is the side of the case or storage.

Reference numeral 23 is a mounting table on which an item is placed when the item is taken out from a storage case or a storage compartment, and 24 is a sensor mounting part equipped with a transmitter/receiver of light, radio waves, ultrasonic waves, or infrared rays. send a signal to (not).

Next, the operation of the present invention will be explained based on FIG. 3 created by computer simulation.

First, when a person approaches a show case or storage, the sensor 24 is activated, and the rotating mechanism of the drive device (not shown) begins to rotate.This rotation is transmitted to the drive shaft 5 of the main trunk 4 and rotates the main trunk 4 counterclockwise. direction.

By rotating the main stem 4 in the counterclockwise direction, the door attached to the other end of the main stem via the support 11 is opened.
It rotates in an arc counterclockwise about the drive shaft 5. At this time, one end 9 of the link A rotates but is fixed, so the other end slides inside the slide toward the tip of the main stem 4.

As a result, the link B pushes up the lower end of the door 1, and the upper end of the door 1 rotates counterclockwise and is rapidly drawn into the ceiling of the case or storage or the back of the shelf, and the upper end of the door 1 is rotated counterclockwise. Collision between the part and the ceiling can be avoided.

When the main stem 4 continues to rotate about the drive shaft 5, the speed at which the slider 7 moves upward becomes slower, and the speed at which the upper end of the door rotates counterclockwise becomes slower. When main trunk 4 passes the rotation center of link A,
The slider 7 begins to move downward toward the main drive shaft 5. The lower end of the door momentarily begins to rotate clockwise, and the upper end of the door almost moves upwards, making the door as a whole move in a straight line almost horizontally. can.

〔Effect of the invention〕

As explained above, according to the present invention, the main trunk, slider, link A, and link B can be configured as described above, or the positional relationship of the drive shaft and rotation shaft can be simulated on a computer. Not only was it possible to design quickly even when the size and shape of the case or storage compartment differed, but the door could be moved smoothly and accurately. Therefore, the opening and closing of the door does not surprise customers or users, and since there is no need for a rail for opening and closing, there is no problem of dirt clogging the rails, making it an excellent case or storage that is hygienic and does not make the sound of opening and closing. This provides an automatic lifting mechanism for the warehouse.

Furthermore, according to the present invention, the door can be stored mechanically smoothly by focusing on the ceiling of the case or storage cabinet or the back of the shelf, which is a blind spot in terms of line of sight or space. An excellent display case or automatic storage cabinet that does not take up the storage space of the door, looks good to customers or users, and is less expensive than those with conventional automatic doors. It provides a lifting mechanism.

Furthermore, according to the present invention, the door of the case or storage can be opened and closed automatically, which reduces energy loss and is useful when hands are unavailable. Especially when the case or storage is multi-tiered, the drive for opening and closing the door is reduced. To provide an excellent automatic lifting mechanism for a show case or storage, which has many effects such as requiring less force.

[Brief explanation of drawings]

Fig. 1 is a side sectional view illustrating an embodiment of the present invention, Fig. 2 is a diagram illustrating a slider in an embodiment of the present invention, and Fig. 3 shows the movements of the main trunk, slider, link A, and link B. These trajectories were drawn using a computer simulation.
FIG. 4 shows a conventional example. In the figure, 1 to 3 are...glass door, 4...main stem, 5...main stem drive shaft, 6...main stem rotation axis,
7...Slider, 8...Links A, B, 9...
Rotation axis of link A, 10...Rotation axis of link B,
11...Supports for the main trunk and links, 12...-14 are shelves of a storage case or storage, 15...
...Refrigerating or warming device storage section, 16... to 18 are storage cases or storage sections, 1
9...Ceiling of case or storage, 2
0...The back of the case or storage, 2
1...Front part of the show case or storage, 2
2...Side part of the case or storage, 2
3...Show case or storage stand, 2
4... Attachment part of the sensor transmitting/receiving unit, 25... Showing the pivot axis.

Claims (1)

[Claims] 1. An automatic system for a show case that detects the approach of a person and lifts the entire door upwards while moving its upper end almost horizontally along the lower part of the ceiling. In the door lifting mechanism, one end is rotatably provided on the side wall of the show case and the other end is rotatably provided on the door, and a main stem for driving the door has a slider in the middle, and one end is provided at a position slightly away from the center of rotation of the main stem. A link A is rotatably provided on the side wall of the show case, and the other end is connected to the slider on the main stem, and the other end is connected to the slider and the other end is a little away from the main stem. Link B rotatably installed on the door of
An automatic door flap mechanism for a show case, which is characterized by consisting of the following. 2. The automatic show case according to item 1, wherein the shelves of the show case are multi-stage, and the automatic door is provided for each shelf, and these automatic doors can be opened and closed individually or synchronously. Door flap mechanism. 3. The automatic door flap mechanism for a show case as set forth in item 1, wherein the pushing and pulling of the slider is performed by a link sliding around a cam fixedly provided at one end of the main stem. 4. The automatic door flap mechanism for a show case according to item 1, wherein the left and right main stems are connected by at least one of a gear, a chain, and a shaft passing through the inside of the show case. 5. The automatic door flap mechanism for a show case according to item 1, wherein the show case is of a multi-stage type, and the plurality of doors have different inclinations. 6. A storage cabinet having an automatic door flap mechanism as described in paragraphs 1 to 5.