JP4535258B2 - Elevating storage rack - Google Patents

Description

The present invention relates to a lifting storage shelf.

Patent Document 1 discloses an elevating / lowering shelf that includes an elevating / lowering storage shelf and resistance force generating means for generating a resistance force against the elevation of the storage shelf. In the lifting and lowering shelf of Patent Document 1, the occurrence of a situation in which the lifting and lowering operation of the housing shelf is performed at high speed is prevented by the resistance generating means, and a situation in which the housing shelf is damaged due to an impact force applied to the housing shelf when stopped. Is prevented.
JP2000-60663

The lifting / lowering shelf of Patent Document 1 includes first resistance force generating means for generating a resistance force when the storage shelf is raised, and second resistance force generating means for generating a resistance force when the storage shelf is lowered. There is a problem that the number is high and the manufacturing cost is high.
The present invention has been made in view of the above problems, and is a lifting / lowering shelf including a retractable storage shelf and resistance force generating means for generating a resistance force against the lifting / lowering of the storage shelf. An object of the present invention is to provide an elevating storage shelf that has fewer members than the storage shelf and has a low manufacturing cost.

In order to solve the above-mentioned problem, in the present invention, a storage shelf that can be moved up and down, a storage shelf urging means that urges the storage shelf upward, and a single resistance force that generates a resistance force against the lifting and lowering of the storage shelf. Generating means, the resistance force generating means generates a resistance force only in one direction, and further causes the resistance force in one direction to act on the storage shelf in the opposite direction when the storage shelf is raised and lowered. A resistance force direction changing means, and the storage shelf urging means distributes the storage shelf and the weight engaged with the linear member and the weight connected to the storage shelf via a flexible linear member. The resistance generating means has a one-way damper that generates a resistance force only in one direction, and the resistance force direction changing means is increasing the one-way resistance force generated by the damper. providing the elevating shelf, characterized in that transmitted to the weight of the rise and shelf That.
In the lifting storage shelf according to the present invention, the unidirectional resistance force generated by the single resistance generating means is applied to the storage shelf when the storage shelf is raised and lowered via the resistance force direction changing means. By acting in the opposite direction, it is possible to prevent a situation in which the raising and lowering operation of the storage shelf is performed at a high speed, and to prevent the storage shelf from being damaged due to an impact force applied to the storage shelf when stopped.
Since the raising / lowering accommodation shelf which concerns on this invention is equipped with a single resistance generation means, compared with the raising / lowering accommodation shelf of patent document 1 provided with two resistance generation means, a structure is simple and manufacturing cost is low. Since the resistance generating means provided in the present invention generates a resistance force only in one direction, the structure is simpler and cheaper than the resistance force generating means generating a resistance force in both directions, and the operation is stable. .
By providing the storage shelf urging means for urging the storage shelf upward, the force required to raise the storage shelf can be reduced.

In the present invention, the storage shelf urging means suspends the weight that is connected to the storage shelf via a flexible linear member, and that engages with the linear member and distributes the storage shelf and the weight. The resistance generating means has a one-way damper that generates a resistance force only in one direction, and the resistance force direction changing means is raised with the containing shelf that is increasing the one-way resistance force generated by the damper. It transmits to the weight inside.
When the storage shelf is raised, the resistance force generated by the unidirectional damper acts directly on the storage shelf as a downward resistance force, and when the storage shelf is lowered, the resistance force generated by the unidirectional damper acts on the weight rising as the downward resistance force It can be made to act on the storage shelf which changes in direction to an upward resistance force and descends through a flexible linear member engaged with the pulley.
By transmitting the resistance force generated by the unidirectional damper to the rising storage shelf and the rising weight, it is possible to prevent the linear member from loosening when the storage shelf is raised and lowered. It is possible to prevent the resulting impact force from acting on the storage shelf.
Since the weight of the weight urges the storage shelf upward, the force required to raise the storage shelf can be reduced.

In a preferred embodiment of the present invention, the one-way damper is a rotary damper, and the resistance force direction changing means is provided on an arm having one end fixed to the rotary shaft of the rotary damper, and on the receiving shelf disposed at the other end of the arm. A first contact body capable of contacting; and a second contact body disposed on the other end of the arm and capable of contacting the weight.
When the unidirectional damper is a rotary damper, the storage shelf is provided via an arm whose one end is fixed to the rotary shaft of the rotary damper and a first contact body that is disposed at the other end of the arm and can contact the storage shelf. The resistance force generated by the unidirectional damper when rising is directly applied to the storage shelf as a downward resistance force, and the second contact body disposed on the other end of the arm and capable of contacting the weight, The resistance force generated by the unidirectional damper when the storage shelf is lowered is applied to the weight that rises as the downward resistance force, and the direction is changed to the upward resistance force through the flexible linear member that engages with the pulley. It can be made to act on the storage shelf which descends.

In a preferred embodiment of the present invention, the first contact body is a first roller attached to the other end of the arm, and the second contact body is a second roller attached to the other end of the arm.
When the roller attached to the other end of the arm comes into contact with the storage shelf and the weight, friction occurs between the other end of the arm and the storage shelf and the weight. Occurrence is prevented.

In a preferred aspect of the present invention, the first roller and the second roller are attached to the arm via the same shaft member.
By attaching the first roller and the second roller to the arm via the same shaft member, the number of members is reduced as compared with the case where both are attached to the arm via separate shaft members, and the manufacture of the lifting storage rack Cost decreases.

In a preferred embodiment of the present invention, the length of the arm is variable.
By adjusting the length of the arm, it is possible to adjust the resistance force against the lifting and lowering of the storage shelf generated by the rotary damper. As a result, usability of the lifting / lowering storage shelf is improved.

In a preferred aspect of the present invention, the lifting and lowering storage shelf includes a storage shelf holding means that engages with the storage shelf to hold the storage shelf and separates from the storage shelf and allows the storage shelf to be raised and lowered.
It is possible to easily change the fixed position of the storage shelf by disposing the storage shelf holding means that engages with the storage shelf, holds the storage shelf, disengages from the storage shelf, and allows the storage shelf to move up and down. Become.

In the lifting storage shelf according to the present invention, the unidirectional resistance force generated by the single resistance generating means is reversed with respect to the storage shelf when the storage shelf is raised and lowered via the direction changing means. By acting in the direction, occurrence of a situation in which the raising and lowering operation of the accommodation shelf is accelerated is prevented, and occurrence of a situation in which the accommodation shelf is damaged due to an impact force applied to the accommodation shelf when stopped is prevented.
Since the raising / lowering accommodation shelf which concerns on this invention is equipped with a single resistance generation means, compared with the raising / lowering accommodation shelf of patent document 1 provided with two resistance generation means, a structure is simple and manufacturing cost is low. Since the resistance generating means provided in the present invention generates a resistance force only in one direction, the structure is simpler and cheaper than the resistance force generating means generating a resistance force in both directions, and the operation is stable. .
By providing the storage shelf urging means for urging the storage shelf upward, the force required to raise the storage shelf can be reduced.
In the present invention, the storage shelf urging means suspends the weight that is connected to the storage shelf via a flexible linear member, and that engages with the linear member and distributes the storage shelf and the weight. The resistance generating means has a one-way damper that generates a resistance force only in one direction, and the resistance force direction changing means is raised with the containing shelf that is increasing the one-way resistance force generated by the damper. It transmits to the weight inside.
When the storage shelf is raised, the resistance force generated by the unidirectional damper acts directly on the storage shelf as a downward resistance force, and when the storage shelf is lowered, the resistance force generated by the unidirectional damper acts on the weight rising as the downward resistance force It can be made to act on the storage shelf which changes in direction to an upward resistance force and descends through a flexible linear member engaged with the pulley.
By transmitting the resistance force generated by the unidirectional damper to the rising storage shelf and the rising weight, it is possible to prevent the linear member from loosening when the storage shelf is raised and lowered. It is possible to prevent the resulting impact force from acting on the storage shelf.
Since the weight of the weight urges the storage shelf upward, the force required to raise the storage shelf can be reduced.

Examples of the present invention will be described.

As shown in FIG. 1, the lifting and lowering storage shelf 1 includes a fixed unit 10, a movable unit 20, a storage shelf 30, and a damper unit 40.

As shown in FIG. 2, the fixed unit 10 has a front girder-shaped frame 11 composed of an upper horizontal frame 11a, a lower horizontal frame 11b, a left vertical frame 11c, and a right vertical frame 11d that are assembled together. ing. The frame 11 is fixed to a wall surface (not shown) with screws.
Arm members 12a and 12b having a groove-shaped cross section are fixed to the left and right ends of the upper horizontal frame 11a, and the groove portions are opposed to each other. Arm members 12c and 12d having a groove-shaped cross section are fixed to the left and right ends of the lower horizontal frame 11b, and the groove portions are opposed to each other.

A slide rail 13 is attached to the left vertical frame 11c and the right vertical frame 11d, and extends vertically. As can be seen from FIG. 3, the slide rail 13 is engaged with the inner rail 13a having a groove-shaped cross section fixed to the left vertical frame 11c and the right vertical frame 11d, and the inner rail 13a through a ball bearing so as to be movable up and down. It has an intermediate rail 13b having an inverted H-shaped section and an outer rail 13c having a groove-shaped section that engages with the intermediate rail 13b through ball bearings so as to be movable up and down. The inner rail 13a and the outer rail 13c are formed to have the same length, and the intermediate rail 13b is formed to be slightly shorter than the both.

The slide rail 13 has an extended state shown in FIG. 4A in which the intermediate rail 13b is relatively moved downward relative to the inner rail 13a, and the outer rail 13c is relatively moved downward relative to the intermediate rail 13b, and the inner rail 13a. And the intermediate rail 13b and the outer rail 13c are opposed to each other, and the length is variable between the contracted state shown in FIG. When the slide rail 13 is in the extended state, the claw (not shown) formed on the intermediate rail 13b comes into contact with the claw (not shown) formed on the inner rail 13a from above, so that the intermediate rail 13b moves downward from the inner rail 13a. And the movable unit described later is held at the lowest position, thereby preventing the outer rail 13c from dropping downward from the intermediate rail 13b. When the slide rail 13 is in the contracted state, the claws formed at the lower end of the outer rail 13c come into contact with the lower end of the intermediate rail 13b from below so that the outer rail 13c supports the intermediate rail 13b.

As shown in FIG. 2, lock receivers 14a, 14b, and 14c are fixed to the upper end portion, the middle portion, and the lower end portion of the left vertical frame 11c. Engaging recesses 14a ', 14b', 14c 'are formed in the lock receivers 14a, 14b, 14c.

As shown in FIGS. 2 and 3, a weight 15 composed of a plurality of stacked weight plates is supported by a left vertical frame 11c and a right vertical frame 11d so that the left and right ends can be moved up and down. It is arranged between the right vertical frame 11d.

As shown in FIG. 2, wires 16a and 16b extending upward from the left and right ends of the weight 15 are wound around pulleys 17a and 17b attached to the vicinity of the left and right ends of the upper horizontal frame 11a.

As shown in FIG. 5, the movable unit 20 has a front girder-shaped frame 21 composed of an upper horizontal frame 21a, a lower horizontal frame 21b, a left vertical frame 21c, and a right vertical frame 21d that are assembled together. ing.
As can be seen from FIG. 3, the left and right outer rails 13c are fixed to the left and right vertical frames 21c and 21d by screws.
As shown in FIG. 5, the tips of the wires 16a and 16b wound around the pulleys 17a and 17b are fixed to wire plates 22a and 22b fixed to the upper ends of the left and right vertical frames 21c and 21d. As a result, the pulleys 17a and 17b suspend the weight 15 and the movable unit 20 by way of the wound wires 16a and 16b. As a result, the weight 15 is lowered when the movable unit 20 is raised, and the weight 15 is raised when the movable unit 20 is lowered.
The weight 15, wires 16a and 16b, and pulleys 17a and 17b form a biasing mechanism that biases the movable unit 20 and thus the storage shelf 30 upward.

A lower end portion of a lock claw 24 having a pin 24a is rotatably attached to a shaft member 23 fixed to the upper end portion of the left vertical frame 21c. The lock claw 24 can swing around the shaft member 23 between a lock position indicated by a solid line in FIG. 5A and a lock release position indicated by a one-dot chain line in FIG. The lock claw 24 is urged toward the lock position by a spring 25.
The lock claw 24 is operatively engaged with a lock release lever 27a of a lock operation unit 27 attached to the lower horizontal frame 21b via a link mechanism 26. The lock release lever 27a swings between a lock position shown in FIG. 5C where the tip 27a 'is directed obliquely downward and a lock release position where the tip 27a' is directed substantially horizontally. can do. The lock release lever 27a is urged toward the lock position by a spring 28.
When the lock release lever 27a is in the lock position, the lock claw 24 is in the lock position. At this time, the pin 24a can be engaged with any one of the engagement recesses 14a ', 14b', 14c 'formed in the lock receivers 14a, 14b, 14c. When the lock release lever 27 a is swung to the unlock position while resisting the biasing force of the spring 28, the lock claw 24 moves to the unlock position while resisting the biasing force of the spring 25. When the lock claw 24 is in the unlock position, the pin 24a cannot engage with any of the engagement recesses 14a ', 14b', 14c 'formed in the lock receivers 14a, 14b, 14c.
The storage rack holding mechanism is formed by the lock receivers 14 a, 14 b, 14 c, the lock claw 24, the springs 25, 28, the link mechanism 26, and the lock operation unit 27.

As shown in FIG. 1, the storage shelf 30 is formed in a lattice structure in a front view and is fixed to a frame body 21 of the movable unit 20. The storage shelf 30 is disposed in a rectangular parallelepiped space formed by the arm members 12 a to 12 d of the fixed unit 10.

As shown in FIG. 1, the damper unit 40 has one end fixed to a rotary damper and 41 fixed to the right end vicinity of the upper horizontal frame 11a of the fixing unit 10 via a bracket, and one end of the rotary shaft of the rotary damper 41, Above the movable unit 20, the arm 42 extends toward the left end of the upper horizontal frame 11 a along the upper horizontal frame 11 a of the fixed unit 10, and is fixed to the other end of the arm 42. And a roller 44, 45 rotatably attached to the pin 43 at a distance from each other. The roller 44 can abut on the upper end of the upper horizontal frame 21 a of the movable unit 20 from above, and the roller 45 can abut on the upper end of the weight 15 from above.
The rotary damper 41 is a one-way damper that generates a resistance force against the upward swing of the arm 42 and does not generate a resistance force against the downward swing of the arm 42.
The rotary damper 41 forms a resistance force generation mechanism that generates a resistance force against the elevation of the storage shelf 30.
The arm 42 and the rollers 44 and 45 of the damper unit 40 are resistances that cause the unidirectional resistance force generated by the resistance force generating mechanism to act on the storage rack 30 in the opposite direction when the storage rack 30 is raised and lowered. A force direction changing mechanism is formed.

The operation of the lifting and lowering storage shelf 1 will be described.
As shown in FIG. 6, the movable unit 20 and thus the storage shelf 30 are at the lowermost position, and the weight 15 connected to the movable unit 20 via the wires 16a and 16b is at the uppermost position. The slide rail 13 is in the extended state of FIG. 4A in which the intermediate rail 13b is moved downward relative to the inner rail 13a and the outer rail 13c is moved downward relative to the intermediate rail 13b. The lock claw 24 is in the lock position, and the pin 24a is engaged with the engagement recess 14c ′ of the lowermost lock receiver 14c, thereby holding the movable unit 20 and thus the storage shelf 30 in the lowest position. The lock release lever 27a of the lock operation unit 27 is in the lock position shown in FIG. 5C in which the tip end portion 27a 'is directed obliquely downward. The roller 45 of the damper unit 40 is in contact with the center of the upper end of the weight 15, and the roller 44 of the arm 42 is separated upward from the upper horizontal frame 21a of the movable unit.

When the user of the lifting / lowering storage rack 1 puts his hand on the lock operation unit 27 and swings the lock release lever 27a upward, the lock claw 24 swings from the lock position to the lock release position via the link mechanism 26. The pin 24a is disengaged from the engaging recess 14c 'of the lowermost lock receiver 14c, and the movable unit 20 and thus the storage shelf 30 can be raised and lowered.
When the user pushes the lock operation unit 27 upward while the lock release lever 27a is swung upward, the movable unit 20 and thus the storage shelf 30 move upward while the slide rail 13 is reduced. The weights 15 suspended from the movable unit 20 are moved downward by the pulleys 17a and 17b via the wires 16a and 16b. Since the weight of the weight 15 acts on the movable unit 20 as an upward biasing force via the wires 16a and 16b, the user can move the movable unit 20 and thus the storage shelf 30 upward with a slight force.
As the weight 15 moves downward, the arm 42 of the damper unit 40 swings downward by its own weight while maintaining the state where the roller 45 is in contact with the upper end of the weight 15. Since the roller damper 41 does not generate a resistance force when the arm 42 swings downward, the arm 42 swings downward without any trouble.

6, when the weight 15 is lowered to the height position where the upper end of the weight 15 and the upper end of the upper horizontal frame 21a of the movable unit are flush with each other and the storage shelf 30 is raised, the damper unit 40 The roller 44 contacts the upper end of the upper horizontal frame 21a of the movable unit. In a state where the upper end of the weight 15 and the upper end of the upper horizontal frame 21a of the movable unit are flush with each other as indicated by the alternate long and short dash line in FIG. 6, the roller 44 of the damper unit 40 contacts the upper end of the upper horizontal frame 21a of the movable unit. The roller 45 is in contact with the upper end of the weight 15. At this time, when the user stops the storage shelf 30 and releases the lock release lever 27a, the lock release lever 27a receives the urging force of the spring 28 and returns to the lock position, and the link mechanism 26, the spring 25, The lock claw 24 returns to the lock position in response to the urging force from the pin, and the pin 24a engages with the engagement recess 14b ′ of the lock receiver 14b. As a result, even if the user releases his / her hand from the lock operation unit 27, the storage shelf 30 is held at the intermediate height position shown by the one-dot chain line in FIG.

The user swings the lock release lever 27a of the lock operation unit upward, swings the lock claw 24 to the lock release position, and swings the lock operation unit 27 while swinging the lock release lever 27a upward. When pushed upward, the storage shelf 30 moves upward from the intermediate height position while reducing the slide rail 13, and the weight 15 moves downward from the intermediate height position. As the storage shelf 30 moves upward, the arm 42 of the damper unit 40 having the roller 44 brought into contact with the upper end of the upper horizontal frame 21a of the movable unit is pushed by the rising upper horizontal frame 21a, and FIG. Sway upward from the position indicated by the alternate long and short dash line. The roller 45 is separated upward from the upper end of the weight 15.
The rotary damper 41 generates a resistance force against the upward swing of the arm 42. The resistance force is transmitted to the movable unit 20 via the arm 42 and the roller 44 as a downward resistance force, and thus to the storage shelf 30. As a result, it is possible to prevent the storage shelf 30 from being damaged by an impact when the storage shelf 30 is raised at high speed and stopped.
When the arm 42 swings upward, the other end of the arm 42 moves relative to the left side relative to the upper horizontal frame 21a. However, since the roller 44 rotates, the other end of the arm 42 and the upper horizontal frame 21a During this period, excessive friction does not occur, and a situation in which the rising of the storage shelf 30 is prevented by the friction does not occur.

When the slide rail 13 reaches the contracted state shown in FIG. 4B, the storage shelf 30 reaches the uppermost position shown in FIG. 1A, and the weight 15 reaches the lowermost position shown in FIG. When the user stops the storage shelf 30 and releases his / her hand from the lock release lever 27a, the lock release lever 27a receives the urging force of the spring 28 and returns to the lock position, and is attached from the link mechanism 26 and the spring 25. Upon receiving the force, the lock claw 24 returns to the lock position, and the pin 24a engages with the engagement recess 14a 'of the lock receiver 14a. As a result, even when the user releases his / her hand from the lock operation unit 27, the storage shelf 30 is held at the uppermost position shown in FIG.

The user swings the lock release lever 27a of the lock operation unit upward, swings the lock claw 24 to the lock release position, and swings the lock operation unit 27 while swinging the lock release lever 27a upward. When pushed down, the storage rack 30 moves downward from the uppermost position while extending the slide rail 13, and the weight 15 moves upward from the lowermost position.
When the storage shelf 30 moves downward and the weight 15 moves upward beyond the intermediate height position indicated by the one-dot chain line in FIG. 6, the roller 45 of the damper unit 40 comes into contact with the upper end of the weight 15 and the arm 42 Swings upward. The rotary damper 41 generates a resistance force against the upward swing of the arm 42. The resistance force is transmitted to the weight 15 as a downward resistance force via the arm 42 and the roller 45, and further to the movable unit 20 as an upward resistance force via the wires 16a and 16b and the pulleys 17a and 17b. It is transmitted to the storage shelf 30. As a result, it is possible to prevent the storage shelf 30 from being damaged by an impact when the storage shelf 30 descends at high speed and stops.

Since the lifting / lowering shelf 1 uses a single rotary damper 41 to generate a resistance force against the lifting / lowering of the storage shelf 30, the lifting / lowering shelf 1 generates a resistance force against the lifting / lowering of the storage shelf using two dampers. Compared to the storage shelf, the configuration is simple and the manufacturing cost is low.
Since the rotary damper 41 generates a resistance force only for the upward swing of the arm 42, the rotary damper 41 has a simpler configuration than a bidirectional damper that generates a resistance force for the upward and downward swing of the arm 42. It is inexpensive and stable in operation. Accordingly, the lifting / lowering shelf 1 is cheaper and more stable in operation than the lifting / lowering shelf that is configured to restrict the speed of the storage shelf 30 using a bidirectional damper.
It is possible to easily change the fixing position of the storage shelf 30 using the storage shelf holding mechanism including the lock receivers 14a, 14b, 14c, the lock claw 24, the springs 25, 28, the link mechanism 26, and the lock operation unit 27. it can.

The resistance force generated by the rotary damper 41 is transmitted to the ascending storage shelf 30 and the ascending weight 15, and the pulling force is constantly applied to the wires 16 a and 16 b, so that the wire when the storage shelf 30 moves up and down. The slack of 16a, 16b can be prevented, and the impact force resulting from the slack of the wires 16a, 16b can be prevented from acting on the storage shelf 30.
Since the roller 44 and the roller 45 of the damper unit 40 are attached to the arm 42 via the same shaft member 43, the number of members is reduced as compared with the case where both are attached to the arm 42 via separate shaft members, The manufacturing cost of the raising / lowering accommodation shelf 1 is falling.

In the elevating / lowering shelf 1, the arm 42 of the damper unit 40 may be configured to have a variable length. By adjusting the length of the arm 42 and adjusting the relationship between the lifting / lowering speed of the storage shelf 30 and the rotation speed of the arm 42 and thus the rotating shaft of the rotary damper 41, the lifting / lowering of the storage shelf 30 generated by the rotary damper 41 is controlled. It becomes possible to adjust the resistance. When the weight of articles stored in the storage shelf 30 is large, the length of the arm 42 is increased, and the resistance against the lifting and lowering of the storage shelf 30 generated by the rotary damper 41 is decreased to raise the storage shelf 30. When the required force is reduced and the weight of the articles stored in the storage rack 30 is small, the length of the arm 42 is decreased, and the resistance force against the elevation of the storage rack 30 generated by the rotary damper 41 is increased, thereby The use mode can be adjusted according to the situation, such as preventing the shelf 30 from rising excessively, and the usability of the elevating storage shelf 1 is improved.

Instead of the rotary damper 41, a reciprocating one-way damper may be used. In this case, it is necessary to provide a mechanism for converting the swing of the arm 42 into a reciprocating motion and transmitting it to the reciprocating motion damper.
Instead of the wires 16a and 16b, any flexible linear member having a predetermined strength such as a string or a belt may be used.

  The present invention can be widely used for a lifting storage shelf.

It is a structural view when the storage shelf is at the uppermost position of the lifting storage shelf according to the embodiment of the present invention. (A) is a front view, (b) is a top view, and (c) is a right side view. It is a structural diagram of the fixed unit with which the raising / lowering accommodation shelf which concerns on the Example of this invention is provided. (A) is a front view, (b) is a top view, and (c) is a right side view. FIG. 3 is a partially enlarged view of FIG. 2. It is a structural diagram of the slide rail with which the raising / lowering accommodation shelf which concerns on the Example of this invention is provided. (A) is a front view in an extended state, (b) is a front view in a contracted state. It is a structural diagram of the movable unit with which the raising / lowering accommodation shelf which concerns on the Example of this invention is provided. (A) is a front view, (b) is a top view, and (c) is a right side view. It is a structural diagram when the storage shelf is in the lowest position of the lifting storage shelf according to the embodiment of the present invention. (A) is a front view, (b) is a top view, and (c) is a right side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifting accommodation shelf 10 Fixed unit 20 Movable unit 30 Accommodation shelf 40 Damper unit

Claims (6)

A storage shelf that can be moved up and down, a storage shelf urging means that urges the storage shelf upward, and a single resistance force generating means that generates a resistance force against the lifting and lowering of the storage shelf. A resistance force direction changing means for generating a resistance force only on the storage shelf, and further causing the resistance force in one direction to act on the storage shelf in the opposite direction when the storage shelf is raised and lowered , The means includes a weight connected to the storage shelf via a flexible linear member, and a pulley that engages with the linear member and suspends the storage shelf and the weight and suspends the weight. The means has a one-way damper that generates a resistance force only in one direction, and the resistance-direction changing means transmits the one-way resistance force generated by the damper to the rising storage shelf and the rising weight. Elevating storage shelf as a feature. The one-way damper is a rotary damper, and the resistance force direction changing means includes an arm having one end fixed to the rotary shaft of the rotary damper, and a first contact body disposed at the other end of the arm and capable of contacting the storage shelf. And a second contact body disposed on the other end of the arm and capable of contacting a weight. The lifting and lowering accommodation according to claim 2, wherein the first contact body is a first roller attached to the other end of the arm, and the second contact body is a second roller attached to the other end of the arm. shelf. The lifting and lowering shelf according to claim 3, wherein the first roller and the second roller are attached to the arm via the same shaft member. The elevator storage shelf according to any one of claims 2 to 4, wherein the length of the arm is variable. 6. Elevating / lowering according to any one of claims 1 to 5, further comprising an accommodating shelf holding means that engages with the accommodating shelf, holds the accommodating shelf, and disengages from the accommodating shelf to allow the ascending / descending of the accommodating shelf. Containment shelves.

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