JPH0618507Y2 - Lifting shelf - Google Patents

Description

[Detailed description of the device] 【Technical field】

The present invention relates to an electric lifting rack for securing a storage space by utilizing a high space near a ceiling.

[Background technology]

Conventionally, there was an elevator shelf that allowed the elevator shelf body to be raised and lowered, raised the elevator shelf body to be stored in the shelf casing portion, and lowered the elevator shelf body to expose it under the shelf casing portion. The lifting and lowering of the lifting shelf body was only guided by the rail mechanism provided between both side surfaces of the lifting shelf body and both side surfaces of the shelf casing portion. For this reason, the lifting shelf body may be slightly tilted while the lifting shelf body is being lifted. If the lifting shelf body is slightly tilted, the lifting shelf body is caught on the inner surface of the shelf casing portion, and the lifting shelf body cannot be smoothly moved up and down. was there.

[The purpose of the device]

The present invention has been made in view of the above technical background, and an object of the present invention is to enable the elevating shelf body to be raised and lowered while being held horizontally.

DISCLOSURE OF THE INVENTION According to the present invention, an elevating shelf body 2 is housed in a shelf casing part 1 having an opening on the lower side so as to be able to move up and down, and the elevating shelf body 2 is provided between the inside of the shelf casing part 1 and the lower part of the shelf casing part 1. In an elevating shelf equipped with an electric lifting mechanism 3 for moving up and down, a wire 24 of the electric lifting mechanism 3 suspends and supports the lifting shelf body 2, and between the inside of the shelf casing portion 1 and the upper surface of the lifting shelf body 2. It is characterized in that a pantograph body 4 for holding the elevating shelf body 2 horizontally is provided in the. Then, the upper surface of the lifting shelf body 2 and the shelf casing portion 1
Since the pantograph body 4 is provided between the upper and lower shelves, the elevating shelf body 2 is lifted and lowered while maintaining a horizontal posture by the action of the pantograph body 4 which expands and contracts while maintaining the elevating shelf body 2 attached to the lower end in parallel. For this reason, the lifting shelf body 2
Is smoothly moved up and down without being caught on the shelf casing part 1. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The shelf casing part 1 is formed by attaching a pair of openable and closable doors 6 to the front surface of a box body 5 whose front and bottom surfaces are open. An electric lifting mechanism 3 is attached to a substantially central portion of the top surface of the shelf casing 1, and pantograph bodies 4 are provided on the left and right of the top surface.
An upper fixing member 7 for rotatably fixing one upper end and an upper rail 8 for holding the upper end of the pantograph body 4 slidably in the horizontal direction are attached. Further, guide roller plates 10 having a pair of upper and lower guide rollers 9 are attached to both sides of the inner surface of the shelf casing portion 1. A net-shaped lifting shelf body 2 can be housed in the shelf casing portion 1, and the lifting shelf body 2 can be raised and lowered from the lower surface opening of the shelf casing portion 1. . The electric lifting mechanism 3 has a structure as shown in FIGS. 13 and 14. That is, the pulley mounting plate 12 mounted on one side in the housing 11 is provided with a long hole 13 which is long in the up-down direction, and the buffer 13 which can slide up and down along the long hole 13 is formed in the long hole 13. The shaft 14 is inserted and attached, and the buffer shaft 14 is elastically pulled upward by a spring 15. Further, an oblique elongated hole 16 is formed in the pulley mounting plate 12 in an oblique direction, and the shaft 18 of the slack eliminating pulley 17 is slidably held by the oblique elongated hole 16 and the shaft of the slack eliminating pulley 17 is slidably held. The spring 18 is elastically pulled upward by a spring 19. On the other side of the housing 11, a take-up pulley 23 is attached to an output shaft 22 of a speed reduction mechanism 21 connected to the motor 20. However, one end of each of the two wires 24 is fixed to the buffer shaft 14, and the wires 24 are further hung down and wound around a movable pulley 25, which will be described later, attached to the upper surface of the lifting shelf body 2. The pulley 17 is rotated and returns to the inside of the housing 11 again to remove the slack.
And the other end is wound around the winding pulley 23. Then, by driving the motor 20 and winding the wire 24 around the winding pulley 23, the moving pulley 25
The lifting shelf main body 2 can be raised via the above, and conversely, by rewinding the wire 24 from the winding pulley 23, the lifting rack main body 2 can be lowered. Further, since the two wires 24 are used in parallel, even if one of the wires 24 is cut, the lifting shelf body 2 is supported by the remaining wire 24, and the lifting shelf body 2 falls accidentally. There is no fear of causing. Further, since one end of the wire 24 is fixed to the buffer shaft 14 that is biased upward by the spring 15, when the wire 24 is subjected to a downward impact, the buffer shaft 14 moves downward against the elastic force of the spring 15. Move, and as a result, the shock applied to the wire 24 is buffered,
The cutting of the wire 24 is prevented. For example, motor 2
Zero start and stop impact, or one wire 2
4 is effective in protecting the other wire 24 from an impact applied when it is cut. Further, the slack eliminating pulley 17 is also biased obliquely upward by the spring 19, so that the wire 24 is prevented from being loosened. The lifting and lowering of the lifting / lowering shelf body 2 is performed by a switch 28 provided on the lower front portion of the shelf casing portion 1.
By pushing this switch 28, the motor 20 is rotated and the lifting shelf body 2 is raised and lowered. It should be noted that when the lift shelf main body 2 is raised to the upper limit and when the lift shelf main body 2 is lowered to the lower limit, the motor 20 is stopped by detecting the respective limit switches. The elevating shelf main body 2 has a wall-shaped mesh made of wire material, and a tray 26 for placing dishes on the bottom surface and in the center of one side. Further, a movable pulley 25 having two grooves formed therein is rotatably attached to a central portion of an upper surface of a top plate 27 of the lifting / lowering shelf main body 2. As shown in FIG. Two wires 24 hanging in a letter shape are hung around a moving pulley 25, and the lifting shelf body 2 is suspended by the wire 24 and the moving pulley 25. Further, as shown in FIG. 10, outer surface groove type guide rails 29 are provided on both side surfaces of the elevating shelf body 2, and the upper portions of the guide rails 29 project above the upper surface of the elevating shelf body 2. Horizontal stoppers 30 project from the upper ends of the guide rails 29 toward both sides. Then, the lifting shelf body 2 is delivered in the shelf casing portion 1, and as shown in FIGS. 11 and 12, a pair of upper and lower guide rollers 9 are delivered in the guide rail 29 so as to be rollable. ing. Therefore, the guide rails 29 are smoothly guided up and down by the guide rollers 9 to make the lifting / lowering operation of the lifting shelf body 2 smooth. In addition, an inverted L-shaped stopper plate 31 is fixed to both sides of the guide rollers 9 on both inner surfaces of the shelf casing portion 1, and stopper rubber 31a is attached to the upper surface of the stopper plate 31, so that the lifting shelf body 2 is When it descends and reaches the lower limit,
The stopper 30 comes into contact with the stopper rubber 31a on the upper surface of the stopper plate 31 to stop the elevator shelf body 2 and further prevents accidental dropping of the elevator shelf body 2. Further, a pantograph body 4 is provided between the upper surface of the elevating shelf body 2 and the top surface of the shelf casing portion 1 in order to maintain the horizontal posture of the elevating shelf body 2. Pantograph body 4
Is one in which a pair of X-shaped bodies 32 are connected by a connecting rod 33, one X-shaped body 32 is attached to the front part of the upper surface of the lifting shelf body 2, and the other X-shaped body 32 is mounted to the rear part. They are attached and face each other in parallel. As shown in FIG. 9, the ends of the connecting rods 33 are fitted into the holes 35 formed in the extremities of the X-shaped body 32 and fixed by the screws 36. The parts are connecting rods 33
The two X-shaped bodies 32 are moved together as a result of being connected by. The X-shaped bodies 32 are rotatably connected at the centers of bars 34 of the same length by cross pins 38 via nylon washers 37 as shown in FIG. on the other hand,
Lower rails 40 each having a substantially U-shaped cross section are provided at the front edge and the rear edge of the upper surface of the lifting shelf body 2 over the entire width in the width direction. Then, as shown in FIG. 5, one lower end of the X-shaped body 32 is rotatably supported by a fixing rod 42 whose both ends are fixed to the through holes 41 of the front and rear lower rails 40. As shown in FIG. 6, a rotatable roller 43 is provided at the other lower end of the X-shaped body 32, and the roller 43 is rotatably delivered in the lower rail 40. Further, as shown in FIG. 7, the upper end of the X-shaped body 32 is rotatably supported by an upper fixing member 7 having a substantially inverted U-shaped cross section by a pin 39, and the other upper end has a lower end. The same roller 43 is provided and is rollably delivered in the upper rail 8. Therefore, one upper end of the pantograph body 4 is pivotally supported by the shelf casing portion 1, one lower end is pivotally supported by the upper surface of the lifting shelf body 2, and the other upper and lower ends thereof are the upper rail 8 and the lower rail 40. Therefore, the pantograph body 4 expands and contracts up and down when the elevating shelf body 2 moves up and down. However, since both upper ends of the pantograph body 4 are horizontally held, both lower ends are also horizontally held. Therefore, the elevating shelf main body 2 attached to the lower end of the pantograph body 4 is held horizontally, and is smoothly moved up and down without being caught by the shelf casing part 1.

[Effect of device]

As described above, according to the present invention, since the pantograph body is provided between the upper surface of the lifting shelf body and the shelf casing portion, the pantograph body that extends and contracts while maintaining the lifting shelf body attached to the lower end in parallel is provided. The elevating shelf body moves up and down while maintaining the horizontal posture, so that the elevating shelf body smoothly moves up and down without being caught by the shelf casing portion. Also, since the wire of the electric lifting mechanism is used to suspend and support the lifting rack main body, the weight of the lifting rack main body is supported by the electric lifting mechanism via the wire, and the pantograph body horizontally holds the lifting rack main body. The load of the lifting shelf body is not applied just by acting as a guide to hold the pantograph body, and the pantograph body is not required to have high strength or mounting strength, and the pantograph body can be easily and inexpensively manufactured. Is.

[Brief description of drawings]

FIG. 1 is an embodiment of the present invention, showing a front view of a shelf casing without a door, FIG. 2 is a side sectional view of the same with the door closed, and FIG. FIG. 4 is a plan view showing the pantograph body provided on the upper surface, FIG. 4 is a front view of the pantograph body of the same, FIG. 5 is a sectional view showing a pivotal structure of the lower side of the pantograph body, and FIG. Sectional drawing showing the lower roller of the pantograph body housed, FIG. 7 is a sectional view showing the upper pivoting structure of the pantograph body, FIG. 8 is a sectional view of the cross portion of the pantograph body, and FIG. 9 is a pantograph body. FIG. 10 is a side view of the lifting shelf main body, and FIGS. 11 and 12 are front views showing the engagement state between the guide rails of the lifting shelf main body and the guide rollers of the shelf casing part. Figures and cross-sectional views, and Figures 13 and 14 show the inside of the electric lifting mechanism. A front view and a plan view showing a structure; 15
FIG. 16 is a side view showing an electric lifting mechanism and a movable pulley attached to the upper surface of the lifting rack body, and FIGS. 16 and 17 are front and side views of the lifting rack. 1 ... Shelf casing part, 2 ... Lifting shelf body, 3 ... Electric lifting mechanism, 4 ... Pantograph body, 24 ... Wire.

Claims (1)

[Scope of utility model registration request] 1. An elevating and lowering device comprising an elevating and lowering rack main body housed in a shelf casing portion having an opening on the lower side so as to be vertically movable, and an electric lifting mechanism for raising and lowering the elevating and lowering rack main body between the inside of the shelf casing portion and the lower portion of the shelf casing portion. In the shelf, the lifting shelf body is suspended and supported by a wire of an electric lifting mechanism, and a pantograph body for horizontally holding the lifting shelf body is provided between the inside of the shelf casing part and the upper surface of the lifting shelf body. Lifting shelf.