JPS6232459Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a pull-out shelf device used for refrigerators, refrigerated storage cases, cold storages, hot storages, storerooms, desks, lockers, and the like.

In this specification, front and rear are based on FIG. 2, and the front refers to the right side of the figure, and the rear refers to the opposite side. Furthermore, left and right refer to the left and right in FIG.

Conventional technology and its problems Conventionally, a drawer shelf device used for furniture such as a desk has a fixed guide frame attached to the inner side wall of the furniture body and a movable guide frame attached to the outer side wall of the drawer in a horizontal position. The traveling rollers of the movable guide frame are inserted between the upper and lower walls of the fixed guide frame, the guide rollers of the fixed guide frame are inserted between the upper and lower walls of the movable guide frame, and a stopper is provided at the front end of the fixed guide frame. There is one in which a stopper piece is provided at the rear end of the movable guide frame (see Japanese Utility Model Publication No. 1983-9491). However, in the conventional device, when the drawer is pulled out to the front end, that is, until the stopper touches the stopper, the drawer is moved so that the upper wall of the movable guide frame touches the stopper, and the lower wall of the drawer touches the front end of the upper wall of the fixed guide frame. It remains in place. At this time, the distance between the running roller and the guide roller is extremely small.
The distance is extremely small compared to the distance between the line of action passing through the center of gravity of the drawer and the running roller. This causes the following problems. That is,
When the drawer is in the forward position, a large force is applied to the stopper, the upper wall of the movable guide frame, and the upper wall of the fixed guide frame, so it is necessary to increase their strength. In addition, in the above-mentioned device,
In order for the drawer to move in and out smoothly, it is essential to provide a gap between the guide rollers and the upper wall of the fixed guide frame, so in the forward position mentioned above, the drawer moves diagonally downward and forward. It tilts, and as the degree of this tilt increases, its posture becomes unstable. Moreover, the distance between the running roller and the guide roller is extremely small compared to the distance between the running roller and the line of action passing through the center of gravity of the drawer;
As a result, a large force is applied to the stopper, the upper wall of the movable guide frame, and the upper wall of the fixed guide frame, and the drawer is tilted forward and downward to a large extent, so that when the drawer is retracted, This will require a great deal of force.

The purpose of this invention is to solve the above problems, to be able to hold the shelf in a stable position when the shelf is pulled out, to require only a small amount of force to retreat the shelf, and to be able to hold the shelf in a stable position when the shelf is pushed back. The object of the present invention is to provide a shelf device in which the shelf does not fly forward again due to the reaction.

Means for Solving the Problems The pull-out shelf device according to this invention includes a pair of shelf support members disposed facing each other at a predetermined interval in the left-right direction, and a pair of shelf support members disposed opposite to each other at a predetermined interval in the left-right direction, and a predetermined interval in the front and rear on opposing surfaces of the shelf support members. There should be a gap slightly larger than the height of the rail between the rail receiving member placed at a distance from the rail receiving member, the rail that can move back and forth while being received by the rail receiving member, and the rail receiving member above each rail receiving member. It is equipped with a rail holding member arranged on the left and right sides, and a shelf on which three rollers that roll along the rail are provided at a predetermined interval in the front and rear direction, and on the rear end of the rail, A stopper is provided that comes into contact with the rail receiving member at the rear end to prevent the rail from falling off forward.
A stopper is provided at the front of the rail to prevent the rollers from falling forward, and the two rear rollers provided on both the left and right sides of the shelf are placed between the stoppers to prevent the rail receiving members from falling off. The front and rear spacing is less than half the length of the rail, and when the rail and shelf are in the retracted position, the rail tilts downward toward the rear, and the upper surface of the front end of the rail is pressed by the front rail holding member. such that the rail is held in the inclined position, and the rail and shelf are in an advanced position such that the rail is inclined forwardly and downwardly;
The upper surface of the rear end of the rail is pressed by a rail pressing member on the rear side.

Embodiments Hereinafter, this invention will be explained based on drawings showing embodiments. This embodiment shows a case where a pull-out shelf device is applied to a medicine cold storage 1 for refrigerating medicines. Also, in this example,
The rail receiving member is a roller, and the rail pressing member is also a roller.

The medicine cold storage 1 consists of a hollow cold storage main body 3 placed on a hollow base 2, and a glass sliding door 4 disposed at the front opening of the main body 3, which can be opened and closed. The base 2 is divided into a plurality of sections, and a refrigerator is housed in one of the sections. In addition, other compartments house a refrigerator switch, a temperature controller, a temperature abnormality warning device, and the like. Furthermore, other compartments are used as storage for storing empty boxes of medicines and the like at room temperature.

Inside the cold storage main body 3, a plurality of shelf support members 5 are provided at predetermined intervals in the left-right direction. The shelf support member 5 includes front and rear vertical members 6, 7 arranged at a predetermined distance in the front and rear, and upper and lower horizontal members 8, 9 connecting the vertical members 6, 7. The distance between the front and rear vertical members 6, 7 is determined by the rail 1, which will be described later.
It is less than 1/2 of the length of 2. In the mutually opposing planes of the shelf support member 5, both the front and rear vertical members 6,
A plurality of rail receiving rollers 10 are attached to 7 at predetermined intervals above and below. A rail pressing roller 11 is also attached a predetermined distance above each rail receiving roller 10, respectively. The distance between both rollers 10 and 11 is such that a rail 12, which will be described later, fits between both rollers 10 and 11.
The height is slightly larger than the rail 12 so that it can be moved back and forth by rotations of 0 and 11, and a slight gap is created between the rail pressing roller 11 and the rail 12. both rollers 10,
A rail 12 is fitted between the rails 11 so as to be movable back and forth. The rail 12 has a roughly-shaped cross section, and the upper and lower edges of its vertical portion protrude upward and downward, respectively, and these protruding portions are connected to the roller 1.
The rail 12 is placed between the rollers 10 and 11 and the shelf support member 5 to prevent the rail 12 from falling off between the rollers 10 and 11. Further, the rails 12 are attached to adjacent shelf support members 5 so that their openings face each other. Further, at the rear end of the rail 12, a roller 1 is attached to the rear vertical member 7.
A stopper 13 is attached to contact the rails 0 and 11 to prevent the rail from falling off toward the front. The stopper 13 is attached after the rail 12 is inserted between the rollers 10 and 11 from the front or rear.
Further, at the front end of the rail 12, a stopper 14 is attached inside to prevent a roller 16, which will be described later, from falling forward from the rail 12. Then, on this rail 12, the rail 12
A shelf 15 is attached that can move back and forth along. The shelf 15 is formed into a rectangular shape by a plurality of linear members each having a metal core coated with polyethylene or the like, and has a raised portion on its periphery to form a cage-like shape. Three rollers 16 are attached to the outside of the rising part of the long side edge of the shelf 15, that is, on both the left and right sides, at predetermined intervals in the front and rear direction, via mounting plates. By fitting into the opening, the shelf 15 can move back and forth along the rail 12. Of the three rollers 16, the rear two
The two are disposed within the rail 12 behind the stopper 14 for preventing the shelf from falling off. This shelf 15
An article storage container 17, which is formed into a rectangular parallelepiped cage shape, is placed on top of the container 17, which is made of a plurality of wire members having a metal core coated with polyethylene or the like. In the shelf 15 and the article storage container 17, gaps between the linear members serve as air circulation sections.

In such a medicine cold storage 1, when taking medicines in and out, when the sliding door 4 is opened and the required shelf 15 is pulled out, the shelf 15 moves forward (see chain line A in FIG. 5), and the shelf 15 moves forward. The roller 16 in the middle is the rail 1
2 (see chain line B in Figure 5), the rail 12 is also moved forward (see chain line C in Figure 5). Then, the rail 12 is connected to the stopper 13.
moves forward until it hits the rear rollers 10, 11 (see chain line D in Figure 5). At this time, since the line of action passing through the center of gravity of the shelf 15 is located ahead of the front roller 10, the portions of the rail 12 and the shelf 15 ahead of the front roller 10 are inclined downward toward the front. , the rear portion of the rail 12 is inclined upward toward the rear, and the upper surface of the rear end portion of the rail 12 comes into contact with and is pressed by the rear rail pressing roller 11 to be held in the above-mentioned inclined position. However, since the difference between the distance between the line of action and the front roller 10 and the distance between the front and rear vertical members 6 and 7 is extremely small, the downward force applied to the shelf 15 acts on the rear rail presser roller 11. The force exerted by the rail 12 becomes smaller, and the angle of inclination of the rail 12 with respect to the horizontal line also becomes smaller. Therefore, shelves 15 and rails 12
In the advanced position, the shelf 15 and rail 12 are held in a stable position. When the shelf 15 and the rail 12 are in the forward position, necessary medicines are taken out from the storage container 17, or medicines to be stored and refrigerated in the refrigerator 1 are put into this container 17. After that, the shelf 15 is moved back and the sliding door 4 is closed. As described above, in the forward position, the force acting on the rear rail pressing roller 11 is small, and the angle of inclination of the rail 12 with respect to the horizontal line is also small, so less force is required at the start of backward movement. In the retracted position of the shelf 15 and the rail 12, the distance between the front and rear vertical members 6, 7 of the shelf support member 5 is less than 1/2 of the length of the rail 12, so that the rear vertical member 7 of the rail 12 The weight applied to the rearward protruding portion is greater than the weight applied to the portion of the rail 12 in front of the rear vertical member 7, and the portion of the rail 12 rearward of the rear rail receiving roller is tilted rearward and downward. death,
The front part slopes diagonally upward. and,
The front end of the rail 12 is the rail pressing roller 1 on the front side.
1, and the rail 12 is held in the above-mentioned inclined position. Therefore, the rail 12 and the shelf 15 will not fly forward due to the reaction when the shelf 15 is pushed in.

In the above embodiment, the pull-out shelf device is used for a medicine cold storage, but the present invention is not limited to this. Further, in the above embodiment, the rail receiving member is the rail receiving roller 10, and the rail pressing member is the rail pressing roller 11 attached above the rail receiving roller 10 of the front vertical member 6, but the invention is not limited to these. It is not fixed and can be changed as appropriate.

Effects of the invention As described above, according to the pull-out shelf device of this invention, when the shelf and the rail are in the forward position, the distance between the line of action passing through the center of gravity of the shelf and the front rail receiving member and the front rail receiving member are The difference in the front and back distance between the member and the rear rail holding member becomes smaller, so
Due to the downward force applied to the shelf, the force acting on the rear rail holding member becomes smaller, and the angle of inclination of the rail with respect to the horizontal line also becomes smaller. Therefore, even when the shelves and rails are pulled out to the front end, the shelves and rails are held in stable postures. Also, in the forward position of the shelves and rails,
Since the force required for the rear rail pressing roller 11 is small and the inclination angle of the rail 12 with respect to the horizontal line is also small, the force required at the start of backward movement is also small. Furthermore, in the retreated position of the shelf and rail, the rear part of the rail is inclined rearward and downward, so that the shelf and rail do not fly forward again due to the reaction of pushing them.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and Fig. 1 is a front view of a refrigerator to which the shelf device of this invention is applied, with the door open, and Fig. 2 is an enlarged cross-sectional view taken along the - line in Fig. 1. Figure 3 is an enlarged sectional view taken along the - line in Figure 2, Figure 4 is a right side view of the shelf support device, and Figure 5 is a right side view of the shelf support device.
The figure is a diagram equivalent to Figure 2 showing the process of pulling out the shelf. 5... Shelf support member, 10... Rail receiving roller (rail receiving member), 11... Rail pressing roller (rail holding member), 12... Rail, 13... Stopper, 14... Stopper, 15... Shelf , 16...
roller.

Claims (1)

[Scope of utility model registration request] A pair of shelf support members 5 that are arranged to face each other with a predetermined interval in the left-right direction, a rail receiving member 10 that is arranged on the opposing surface of the shelf support member 5 with a predetermined interval in the front and back, and a rail receiving member. A rail 12 that can be moved back and forth by being received by a rail 10, and a rail holding member 11 disposed above each rail receiving member 10 with a spacing slightly larger than the height of the rail 12 between the rail 12 and the rail receiving member 10. , 1 rail each on both left and right sides
Three rollers 16 rolling along the rail 12 are provided with shelves 15 provided at predetermined intervals in the front-rear direction, and are in contact with the rear end of the rail 12 and the rail receiving member 10 at the rear end. A stopper 13 is provided to prevent the rail 12 from falling forward, and a stopper 14 is provided at the front of the rail 12 to prevent the roller 16 from falling forward. Of the rollers 16 provided on both sides, the two on the rear side are arranged, and the distance between the rail receiving members 10 in the front and back is less than half the length of the rail 12, so that the rail 12 and the shelf 15 are in the retracted position. At this point, the rail 12 is tilted downward toward the rear, and the upper surface of the front end of the rail 12 is pressed by the rail pressing member 11 on the front side to hold the rail 12 in the tilted position. In the drawer type shelf device, the rail 12 is inclined downwardly toward the front in the forward position of 15, and the upper surface of the rear end of the rail 12 is pressed by the rail pressing member 11 on the rear side.