JP3331536B2 - Folding cradle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding cradle used as a table, a product display stand, or the like.

[0002]

2. Description of the Related Art A folding leg used in a conventional cradle of this type is held in an upright state and a folded state by being engaged with an underframe near a pivot portion thereof. I have.

[0003]

In the above-mentioned conventional structure, since the entire load on the leg in the turning direction is concentrated on the engaging portion, the engaging portion is easily broken. The engaging parts and the legs themselves must be made of a high-strength material or structure. Also, if the engagement portion is easily disengaged by using a spring or the like, the reliability of the engagement becomes poor,
For example, when the underframe is lifted while the legs are folded, there is a problem that the leg ends slightly hang down, which hinders the stacking of flat platforms.

An object of the present invention is to provide a foldable cradle which can reliably hold a leg in the standing state or the folded state in any of the above-mentioned conventional disadvantages.

[0005]

According to the present invention, the above-mentioned problem is solved as follows. (1) In a cradle in which the legs are pivotally mounted in the left and right sides of the underframe from a vertical state to a substantially horizontal folded state,
Having a fastening member at both ends, the fastening member can be used as a reinforcing rod by being fixed to both legs in a vertical state,
By setting the both legs in a folded state, disposed below, and fixing a fastening member at each end to the underframe,
It is provided with a connecting rod which can be used as a means for preventing the legs from falling.

(2) In the above item (1), the lower portions of the two pairs of legs foldably connected to the left and right sides of the underframe are connected to each other by a horizontal rod. The connecting member is connected to the horizontal rod, and when the legs are folded, the connecting rod is brought into contact with the horizontal rod to fix the connecting member to the underframe.

(3) In the above item (1) or (2), when the legs are folded, the connecting rod is placed sideways on the connecting rod mounting member provided on the underframe, and the fastening member is connected from the lateral position. The rod mounting member is fitted and fixed.

(4) In any one of the above items (1) to (3), mounting holes for casters and adjusters are provided at the tip of the leg and the corner of the underframe.

[0009]

FIG. 5 is a side view of a display stand (A) which is an embodiment of the present invention. The legs of this display stand (A)
(2) can be folded and stored inside the underframe (1). Underframe
A fence (11) is attached around the upper surface of (2).
FIG. 1 is an exploded perspective view of the underframe 1 with the fence 11 removed.

[0010] As shown in FIG.
(2) The two parts (2) are connected by a horizontal rod (10) in the front-rear direction near the lower part (upper part in FIG. 1), and the upper end (lower part in FIG. ) By underframe
It is pivotally mounted inside (1).

The center of the left and right horizontal rods (10) is
The angle member 26 fixed to the end of (8) is fixed to each other by fastening with a thumbscrew 9. A caster is provided in the mounting hole (21) at the tip (the upper end in FIG. 1) of each leg (2).
(7) is attached.

As shown in FIG. 2, at the corner of the underframe (1),
The leg attachment member (12) is attached by welding. The leg attachment member (12) is formed by bending a steel plate, and the leg (2)
U-shaped vertical part with the opening for accommodating it inward (13)
It has. Elongated holes (14) in the vertical direction are formed on both sides of the U-shaped vertical portion (13). A concave portion (15) is formed at the upper end of the inner side of the U-shaped vertical portion (13).

The leg (2) is inserted into the U-shaped vertical portion (13) of the leg mounting member (12), and its shaft hole (16) is aligned with the elongated hole (14) to stop the shaft (2). 3) is fitted, a snap pin (4) is inserted through the opening (17), and the stop shaft (3) is stopped to be pivoted. At this time, the pin (19) planted on the leg (2) is accommodated in the recess (15) of the leg mounting member (12), and one end of the tension spring (5) is hooked on this pin. The other end of the tension spring (5) is fixed to a small hole (18) at the end of the leg attachment member (12).

In this way, the leg (2) mounted in an upright state pulls the leg (2) upward in FIG. 2 against the force of the tension spring (5), and inserts the stop shaft (3) into the slot ( By moving the pin (19) out of the recess (15) by moving it along (14), the pin (19) can be turned inward about the stop shaft (3). Thus, the folded state shown in FIG. 4 can be obtained.

The leg mounting member (12) has an adjuster
A screw hole for mounting (6), that is, a mounting hole (22) is also formed.

A pair of legs (2) is also provided inside the underframe (1).
A connecting rod mounting member (23) is fixed to the center position of the, for example, by welding. The connecting rod mounting member (23) is formed by bending a steel plate in the same manner as the leg mounting member (12), and has a deep notch (24) and a screw hole which open upward in FIG. (25) is formed.

As shown in FIG. 3, the connecting rod (8) is turned sideways from the state shown in FIG. 1, and the angle member (26) at the end is hooked on the notch (24). (9) can be screwed into the screw hole (25) of the connecting rod mounting member (23) from the hole of the angle member (26) to stop the connecting rod (8).

Therefore, as shown in FIG.
If the connecting rod (8) is fixed to the connecting rod mounting member (23) in the state where (2) is folded, even if the underframe (1) is erected,
Since the horizontal rod (10) is restrained by the connecting rod (8), the leg (2) is held in a folded state without rotating.

The caster (7) and the adjuster (6)
It can be appropriately replaced depending on the purpose of use of the high and low flat platforms.

[0020]

According to the present invention, by arranging the connecting rod between the two legs while the legs are upright, the distance between the left and right legs is immovable with each other, the upright state is reliably maintained, and the legs are folded. In the squat state, the suspension of the legs is suppressed by erection under the folded legs in the underframe, so that each state of the legs is maintained between the legs and the underframe with respect to the folded structure of the legs. It is not necessary to provide a strong engaging means, and there is no problem even if a structure that emphasizes the ease of folding the legs is adopted.

Further, according to the present invention, the connecting rod is erected on the underframe in both the standing state and the folded state of the legs, so that the underframe and the connecting rod are used or stored separately. There is no risk of losing attachment parts such as connecting rods and screws.

As in the second aspect of the present invention, the lower portions of two pairs of legs which are foldably pivotally connected to the left and right sides of the underframe are connected to each other by a horizontal rod, and when the legs are in a vertical state. When a connecting member of a connecting rod is connected to the horizontal rod, and in a folded state of the leg, the connecting rod is brought into contact with the horizontal rod so that the connecting member is fixed to an underframe. Since the horizontal rod is restrained by the connecting rod at a position far from the pivot point, the effect of preventing rotation is remarkable.

According to the third aspect of the present invention, when the legs are folded, the connecting rod is placed sideways with respect to the connecting rod mounting member provided on the underframe, and the fastening member is connected to the connecting rod mounting member from the lateral position. When they are fitted and fixed, the fastening member does not protrude downward from the edge of the underframe, and there is no problem when the flat base is used in a low position.

According to the fourth aspect of the present invention, when the mounting holes for the casters and the adjusters are provided at the ends of the legs and the corners of the underframe, the casters and the adjusters can be used in any of the high and low positions. The adjuster can be arbitrarily attached, and the removed portion is screwed into the mounting hole of the underframe without being stored separately, thereby eliminating the risk of loss.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a receiving stand according to an embodiment of the present invention in an inverted state.

FIG. 2 is an exploded perspective view showing, in an enlarged manner, the vicinity of one corner of the cradle shown in FIG.

FIG. 3 is an enlarged exploded perspective view of a connecting portion between a connecting rod mounting member and an end of the connecting rod.

FIG. 4 is a perspective view showing a receiving stand in which legs are folded and accommodated in an underframe in an inverted state.

FIG. 5 is a side view of the cradle with the legs upright.

[Explanation of symbols]

 (A) Display stand (receiving stand) (1) Underframe (2) Leg (3) Stop shaft (4) Snap pin (5) Tension spring (6) Adjuster (7) Caster (8) Connecting rod (9) Butterfly Screw (fastening member) (10) Horizontal rod (11) Fence (12) Leg mounting member (13) Vertical part (14) Long hole (15) Concave (16) Shaft hole (17) Opening (18) Small hole ( 19) Pin (20) Tension spring (21) (22) Mounting hole (23) Connecting rod mounting member (24) Notch (25) Screw hole (26) Angle material

Continuation of the front page (56) References JP-A-6-70814 (JP, A) JP-A-51-40269 (JP, A) JP-A-54-75203 (JP, U) JP-A-57-179873 (JP) , U) Shokai Sho 58-91935 (JP, U) Registered utility model 3028580 (JP, U) Japanese Patent Publication No. 61527 (Taisho 13) (JP, B1T) (58) Fields investigated (Int. Cl. ⁷ , (DB name) A47B 1/00-41/06

Claims (4)

(57) [Claims] 1. A receiving table in which legs are pivotally mounted in the left and right side portions of a base frame from a vertical state to a substantially horizontal folded state, and a fastening member is provided at both ends, and the fastening member is placed in a vertical state. By fixing to both legs, a reinforcing rod can be provided, and both legs are placed in a folded state, arranged below the legs, and fastening members at each end are fixed to the underframe to prevent the legs from falling. A foldable cradle comprising a connecting rod. 2. The lower part of each of two pairs of legs pivotally attached to the left and right sides of an underframe by a horizontal rod, and in a vertical state of the legs, a connection rod to the horizontal rod. In the folded state of the legs,
2. The connecting rod is brought into contact with the horizontal rod to fix the fastening member to an underframe.
The foldable cradle described. 3. In the folded state of the leg, the connecting rod is placed sideways with respect to the connecting rod mounting member provided on the underframe, and the fastening member is fitted to and fixed to the connecting rod mounting member from the lateral position. The foldable cradle according to claim 1 or 2, wherein 4. The folding cradle according to claim 1, wherein mounting holes for casters and adjusters are provided at the ends of the legs and the corners of the underframe.