JP2009300072A - Mounting stage in refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an abnormal force from being applied to a belt due to a difference in thermal expansion due to a difference between a material for a mounting table and a material for a belt, and to keep a belt tension substantially constant in response to belt expansion and contraction. To do.
SOLUTION: A plurality of shafts 11 or cylinders having screws 1a are rotatably provided on a mounting table 7, and a belt 3 is suspended around a sprocket 1 or a pulley attached to these shafts 11 or cylinders. One end of the belt 3 is locked to a slide 4 having a handle portion 4a, and the other end of the belt 3 is locked to a tension member 6 fitted to be slidable with respect to the slide 4, and the tension member 6 is In this configuration, the belt 3 is preloaded by the spring 5 in a direction in which the belt 3 is tensioned.
[Selection] Figure 2

Description

  The present invention relates to a table that can be adjusted up and down, and is particularly preferred when applied to a refrigerator shelf. That is, according to the present invention, when placing an object having a height different from that already placed on a refrigerator shelf or the like, the mounting table in the refrigerator can be quickly adjusted to use the space efficiently. About.

For example, in a refrigerator, a beam is placed in the middle of the depth and the worm is turned up and down by turning the worm, and on the table, the lock mechanism is released and the table is moved up and down directly by hand. Further, in the original application of Patent Document 1, a sprocket provided with a plurality of shelves (mounting tables) such as a refrigerator is simultaneously rotated through a belt suspended on the sprocket to raise and lower the above-described table. It proposes what makes it possible.
JP 2000-297898 A

It takes time to turn the worm, and with the method of releasing the lock mechanism, when the table is heavy, the table will drop at the moment when the lock is released, and there is a danger of the lock being released, and the operation will be two operations: unlocking and moving the table up and down. It was difficult and difficult to set in place.
In addition, when the sprocket is rotated through the belt and the screw shaft is rotated to move the loading table up and down, the belt is applied to the belt due to a change in temperature and the weight of stored items placed on the shelf. Because it expands and contracts due to load changes and performance deterioration, etc., the rotation of the sprocket, that is, the rotation of the screw that supports the table, may become irregular and unstable, and there are multiple screws that support the table There is also a possibility that the rotation is non-uniform on the shaft.
The present invention has been proposed to solve such problems.

  In order to achieve the above object, a mounting table in a vertically adjustable refrigerator according to the present invention includes a plurality of shafts or cylinders having screws provided on the mounting table so as to be horizontally rotatable, and these shafts. Is a sprocket or pulley attached to a cylinder, a belt suspended around these sprockets or pulleys, a slide having a handle for locking one end of the belt, and a second end of the belt. And a tension member that is slidably fitted to the slide, and the tension member is configured to be preloaded by a spring in a direction in which the belt is tensioned.

  With this configuration, the belt is preloaded in the direction of tension by the spring, so the belt expands and contracts due to changes in temperature, load changes on the belt due to the weight of stored items placed on the shelf, deterioration of performance, etc. However, the spring expands and contracts in response to this expansion and contraction, and the belt tension can be kept substantially constant.

As described in detail above, according to the stage in the refrigerator that can be adjusted up and down according to the present invention, the following effects can be obtained.
(1) It is possible to easily adjust the mounting table (shelf) up and down by linear operation of the handle portion, and to adjust the interval and height of the mounting table.

(2) Since the belt is preloaded in the direction in which it is tensioned by a spring, the belt expands and contracts due to changes in temperature, changes in load on the belt due to the weight of stored items placed on the table, and performance deterioration. Even so, the spring expands and contracts in response to the expansion and contraction, and the belt tension can be kept substantially constant, whereby the rotation transmitted to the sprocket via the belt, that is, the rotation of each screw shaft supporting the mounting table. Can be made substantially uniform.

(3) Since it is a direct operation, the operation can be performed quickly, and the operation distance can be increased by arranging the belt on the outer periphery of the mounting table.
(4) Since the friction can be reduced only at the four corners where the sprocket is provided, the operation can be performed lightly.
(5) Even if the platform itself is heavy or when the platform is heavy because it is heavy, the spring is built in the foot and supports (biased) the platform so that it can be operated lightly. can do.
(6) By reducing the pitch angle between the foot and the shaft screw which are screwed together, the operation is simple without requiring a lock mechanism, and the operation force is light.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall perspective view showing an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part showing the embodiment of the present invention.

  In the figure, a shaft 11 provided with a spiral groove (screw) 1 a is provided in the mounting table 7 so as to be rotatable in the horizontal direction, and this shaft 11 is opposed to the spiral groove (screw) 1 a of the shaft 11. A foot plate 2 forming a foot provided with a spiral groove (screw) 2a (see FIG. 3) is screwed together. The foot plate 2 can freely move up and down but cannot rotate, and one end of the foot plate 2 is slightly out of the mounting table 7 2b.

A sprocket 1 is fixed to the shaft 11, and the structure of the shaft 11 and the sprocket 1 is provided at four corners of the mounting table 7, and a belt 3 is suspended around the sprocket 1. The belt 3 is disposed near the outer periphery of the stage 7. One end of the belt 3 is locked to a slide 4 having a handle portion 4 a, and the other end is locked to a tension member 6 preloaded by a spring 5 fitted in the slide 4.
The spring 5 preloads the belt 3 in a tensioning direction, the belt 3 changes in temperature, the load on the belt 3 changes due to the weight of the stored item placed on the mounting table 7, and the performance deteriorates. Even if it expands and contracts, it expands and contracts in accordance with the expansion and contraction to keep the tension of the belt 3 substantially uniform. In addition, the spring 5 can keep constant the corresponding change in the tension of the belt 3 due to the difference in thermal expansion due to the temperature change due to the difference in the material of the mounting table 7 and the material of the belt 3. it can.

  Therefore, when the slide 4 is moved left and right by the handle 4a, the belt 3 locked to the slide 4 is also moved (rotated) to rotate the sprocket 1. Since the shaft 11 is rotated by the rotation of the sprocket 1, the foot plate 2 that is screwed to the shaft 11 and cannot be rotated and is freely movable up and down moves up and down.

  FIG. 3 is a cross-sectional view of a main part for explaining a use state. The mounting table 7 is set by locking the portion of the foot plate 2 that has gone out 2 b from the mounting table 7 to the locking portion 12. For example, if the object to be used is a refrigerator, the locking portion 12 is provided on the inner wall surface of the refrigerator, and the mounting table 7 is set in the refrigerator. When the handle portion 4a is moved left and right in this state, the movement is transmitted to the shaft 11 via the slide 4, the belt 3 and the sprocket 1, so that the foot plate 2 moves up and down, that is, the shaft 11 is relatively moved. At the same time, the stage 7 moves up and down, and the height position of the stage 7 is adjusted. For example, in the case where the stage 7 is provided in several stages in the refrigerator, the interval is adjusted between the upper and lower stage 7.

  FIG. 4 shows a modification of the above embodiment, in which the foot plate 2 is a cylindrical tube foot 8, and a vertically movable tube foot 8 is screwed to a shaft 11. Since the others are the same as those of the above-described embodiment, the same reference numerals are given and the detailed description is omitted. Therefore, the height of the stage 7 can be adjusted by moving the tube foot 8 back and forth at the handle portion 4a and adjusting the length.

  In addition, it is preferable that the spiral groove (screw) 1a of the shaft 11 and the spiral groove (screw) 2a of the foot plate 2 or the foot tube 8 have a small pitch angle. This is because if the pitch angle of the spiral grooves 1a and 2a is small, the operation is simple without requiring a lock mechanism, and the operation force can be light because the operation distance can be increased.

  FIG. 5 is a partially broken perspective view showing another embodiment of the present invention. In this example, a spring 9 is interposed between the stage 7 and the foot plate 2 or the cylinder foot 8 in order to reduce the operating force when the stage 7 itself is heavy. That is, a lifting spring 9 is provided in the tube foot 8 to prevent a force from being applied to the spiral grooves and an increase in operating force. This is also effective when an object is placed on the stage 7 and is heavy. The belt may be a timing belt, not a hole, or a chain.

1 is an overall perspective view showing an embodiment of the present invention. It is a principal part enlarged view which shows embodiment of this invention. It is principal part sectional drawing explaining the use condition of this invention. It is principal part sectional drawing which shows the modification of embodiment of this invention. It is a partially broken perspective view which shows other embodiment of this invention.

1 Sprocket 1a Spiral groove (screw)
2 Foot plate 2a Spiral groove (screw)
3 Belt 4 Slide 4a Handle portion 5 Spring 6 Tension member 7 Loading table 8 Tube foot 9 Lifting spring 11 Shaft

Claims (1)

A plurality of shafts or cylinders having screws provided on the stage so as to be horizontally rotatable;
These axles or sprockets or pulleys attached to the cylinder,
These sprocket forks are belts suspended on pulleys,
A slide having a handle portion for locking one end of the belt;
A tension member that is locked to the other end of the belt and is slidably fitted to the slide;
A mounting table in a refrigerator that can be adjusted up and down, wherein the tensioning member is configured to be preloaded by a spring in a direction of tensioning the belt.

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