JPH06985Y2 - Lifting and moving device for articles - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is configured so that casters mounted on the lower part of the pedestal of articles in various devices and furniture can be moved up and down at the same time to move articles. The present invention relates to a lifting device for moving articles, which is sometimes lowered by moving the casters.

[Prior art]

When moving items such as furniture and display stands that have a considerable weight and are usually installed and used in a fixed position by rearrangement or the like, it is troublesome to lift and carry them by a large number of people. Therefore, a caster is provided in the lower part of the pedestal of the article so that the caster can be lowered at the time of the above-mentioned movement and can be raised and retracted at the time of stationary.

In this case, the caster is installed at a fixed position under the cradle of the article, and a vertically movable leg rod is separately provided around the caster, and the leg rod is lifted when the article is moved to ground the caster. A means for lowering the rod to raise the caster, and a caster at the bottom of the cradle, separately from the fixed legs, so that the caster can move up and down, so that the caster can be moved up and down so that articles can be placed and moved. The two forms of the above-mentioned means are adopted.

However, as a technique belonging to the former, Japanese Patent Publication No. 47-276.
No. 61, No. 54-17246, and others as proposed by the present applicant, No. 62-11002, No. 62-31571, No. 63-21178, No. 64-.
No. 22677, Jitsukaihei 1-99773, and the like, and the technique belonging to the latter is Jitsukai Sho 63-84.
No. 015 and Japanese Utility Model Application No. 2-3414 are such examples.

[Problems to be solved by the invention]

By the way, in the above-mentioned lifting device for articles, which is equipped with legs that can move up and down in addition to the casters, it is necessary to equip the lower part of the cradle with both members, and to stabilize the articles. In order to support them, these two members are required individually at four places, which is not only expensive, but also the mounting area of the pedestal is restricted. Further, the latter type which moves the casters up and down uses the screw mechanism to move the casters up and down. Therefore, even if it is possible to save labor, it has the disadvantage that it takes a long time to move up and down.

The present invention has been made in view of the above situation, and in the case where an article on a cradle is moved up and down to make the article stationary and movable, The purpose of the present invention is to allow the vertical movement of the caster to be performed quickly and efficiently, and to perform the vertical movement by applying a constant movement in the same direction.

[Means for solving problems]

According to the device of the present invention, upper rails having horizontal horizontal elongated holes are fixed near both ends of a front and rear frame rod in a pedestal equipped with leg plates of appropriate height at symmetrical positions in front and rear, and a pair of lower rails is provided on the lower surfaces of the front and rear portions. At the both ends of the front and rear parts of the left and right base plates equipped with the casters, lower rails having elongated holes parallel to the elongated holes are fixed at the both ends of the front and rear parts, and are positioned above and below these upper rails. A roller at the other end of the cross link whose one end is pivotally supported by the upper rail and the lower rail is fitted into the above-mentioned elongated holes located above and below, respectively, and a pair of left and right sides is provided on the major axis supporting the front and rear facing rollers. Each leg end of each arm is loosely fitted so that the inner end of each arm is rotatably supported by a crank pin at one end of an operating shaft rotatably supported at a substantially middle portion of the pedestal. Intermittent movement in the same direction by agitating Is to characterized in that so as to change the angle of the cross link by.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 is a pedestal for an article A formed in a rectangular frame shape by a section steel having an inverted L-shaped cross section, and a grounding leg plate 1a having an appropriate height is hung vertically around the pedestal or at several places around the pedestal. Front and rear frame rod 1
Upper rails 2a, 2b, 2 having horizontal elongated holes 2'at inner symmetrical positions near the left and right ends of b, 1b, respectively.
c and 2d are fixed. Reference numerals 3 and 3 denote base plates located below the front and rear upper rails 2a, 2b and 2c, 2d at the left and right positions, which support a pair of casters 4 on the lower surface via a support shaft 4 '. Lower rails 5a, 5b and 5 are formed on the front and rear ends of the plate so that elongated holes 5'are formed in parallel with the elongated holes 2 '.
c and 5d are fixed, and the rails 2a, 5a, ... 2d, 5d facing each other in the vertical direction have one end pivotally attached near the one end of the upper and lower rails 6a, respectively, and an intermediate intersection portion. Rollers 7 and 8 axially provided at the other ends of the links 6c and 6d, which can be connected by a pin 6b and whose crossing angle can be changed, are respectively rotatably fitted in the elongated holes 2'and 5 '. It is supported in a face-to-face relationship in parallel by. 9
Are the upper rails 2a and 2b facing each other before and after the upper gutter.
c, 2d is a long shaft that pivotally supports the front and rear rollers 7 fitted in the long holes 2'of the c and 2d, and is a plan view projected laterally from the middle part of the cradle 1 near both ends of the long shaft. Y-shaped arm 1
The leg ends 10a of 0 and 10 are loosely fitted. Reference numeral 10b is a reinforcing rod of the arm 10.

Reference numeral 11 denotes the pedestal 1 in the first half of the middle of the pedestal 1 on the left and right sides.
With an operating width axially supported between the front and rear support plates 12 and 13 vertically laid (Figs. 1, 5, 6), the operating shaft is repeatedly agitated by the required angle of the pedals 14 fitted to the outer ends. It is intermittently rotated in one direction via the pedal lever 15 and the cam clutch shaft 16, and 17 and 18 are stoppers and stopper pins that regulate the upward movement position of the pedal 14, and 19 is a spring for returning the pedal lever 15. Show. The pedal 14 is not limited to the foot pedal type, but may be a manual pedal type. 20 is a ratchet fixed to the operating shaft 11, 21
Is a nail. Reference numeral 22 denotes a crank lever axially attached to the inner end portion of the operating shaft 11. A crank pin 23 protruding from the eccentric portion of the lever is pivotally supported on the inner end portions of the Y-shaped arms 10 and 10. Is there. As shown in FIGS. 1 and 2, when the crank pin 23 is at the left rotation dead center, the rollers 7 of the long shaft 9 connected to the pin via the arms 10 and 10 are connected to the upper rail 2a. It is assumed that the casters 4 are located near the left ends of the respective elongated holes 2'in 2d, and in this state, the casters 4 are set at positions retracted above the grounded lower end of the leg plate 1a.

In the above configuration, when the caster 4 is lifted up and the pedal 14 is repeatedly actuated against the spring 19 in the state shown in FIGS. 2 and 3, the operating shaft 11 is moved by the pawl 21 and the ratchet 20. 2 rotates intermittently in the clockwise direction to rotate the crank pin 23 in the direction of the arrow in FIG. 2, and when the pin comes to the right position opposite to the above, the arm 1
When the rollers 7 reach the right ends of the slots 2'through 0 and 10, the cross links 6c and 6d rise up at a steep angle, and the lower rail 5a and the base plates 3 and 3 are formed.
Descends to push the caster 4 downwardly of the leg plate 1a as shown by the chain line in FIG. Stand 1 in this state
The article A placed on the can be freely moved by the casters.

Next, when it is desired to lower the pedestal 1 to keep the article in a fixed position, when the same fan action is applied to the pedal again, the crank pin further rotates in the direction of the arrow, which is shown in FIG. When the caster 4 is returned to the original position shown, the caster 4 is retracted to a position above the leg plate 1a, and the pedestal 1 can be stabilized.

[Effect of device]

According to the present invention, when the casters provided under the pedestal are moved up and down all at once, it is possible to apply a fanning motion of the required angle to the pedal in only one direction, so the operation is quick, smooth, and easy. In addition to being able to be performed, the pedal fanning operation at the time of raising and lowering can be performed by the intermittent rotational movement in the same direction for a certain period of time, so that the vertical movement operation can be simplified and performed without error.

[Brief description of drawings]

FIG. 1 shows an embodiment of the device of the present invention, FIG. 1 is a plan view, and FIG.
The figure is a front view that diagrammatically illustrates the positional relationship of each part with respect to the pedestal, and FIG.
FIG. 4 is a developed sectional view in which a part is cut off along a line IV-IV in FIG. 3, FIG. 5 is an enlarged plan view of an essential part, and FIG. 6 is a side view of a pedal portion. 1 is a pedestal, 1a is a leg plate, 2a ... 2d is an upper rail,
2'is an elongated hole, 3 is a base plate, 4 is a caster, 5a ...
5d is a lower rail, 5'is a long hole, 6c and 6d are cross links, 7 and 8 are rollers, 9 is a long axis, 10 is an arm and 10a.
Is a leg end, 11 is an operating shaft, 14 is a pedal, and 23 is a crank pin.

Claims (1)

[Scope of utility model registration request] 1. An upper rail having horizontally elongated slots near both ends of a front and rear frame rod in a pedestal equipped with leg plates of appropriate heights is fixed at front and rear symmetrical positions, and a pair of front and rear lower surfaces are provided. At the both ends of the front and rear parts of the left and right base plates equipped with the casters, lower rails having elongated holes parallel to the elongated holes are fixed at the both ends of the front and rear parts, and are positioned above and below these upper rails. A roller at the other end of the cross link whose one end is pivotally supported by the upper rail and the lower rail is fitted into the above-mentioned elongated holes located above and below, respectively, and a pair of left and right sides is provided on the major axis supporting the front and rear facing rollers. Each leg end of each arm is loosely fitted so that the inner end of each arm is rotatably supported by a crank pin at one end of an operating shaft rotatably supported at a substantially middle portion of the pedestal. Intermittent rotation in the same direction by agitating operation Jack up mobile device of the article being characterized in that so as to change the angle of the cross link by causing.