JPS6244670Y2 - - Google Patents

Description

[Detailed description of the invention] This invention maintains the opening and closing state of table tennis tables, conference desks, dining tables, etc. (hereinafter referred to as tables) in which the left and right top plates and legs are separated and folded. Relating to a deterrent device for

Figures 1A and 1B show this type of separated table, in which frame bars 2' made of angle materials are installed parallel to the front and rear of the lower surface of the top plate 1', and their vertical pieces 2a' At the left and right (outer, inner) positions, the upper ends of a main leg 3' having a pair of casters 3a' at the lower end and a bar-shaped secondary leg 4' are rotatably attached to the left end of the top plate 1'. The top plate 1' is raised and folded by pushing down or lifting the right end as shown in Figure B, but in this conventional type, it cannot be held effectively in the unfolded or folded state. Since it does not have a fixing means, if force is applied to the end of the top plate 1' in the unfolded state as shown in Figure A, it will tend to rotate and fold, and even in the folded state, the top plate 1' and sub-legs 4' It has a tendency to constantly expand under its own weight, making it unstable and dangerous.

This device was devised to eliminate the above-mentioned drawbacks, and it maintains stable postures both in the unfolded state when in use and in the folded state when stored, and also allows for easy switching of postures. The present invention provides a table restraining device that allows the user to perform the following tasks.

The embodiment will be explained with reference to the drawings.
In Fig. 2, reference numeral 1 denotes the top plate of the separation table, and frame beams 2 made of angle materials are attached in parallel to each other at the front and rear positions of the lower surface of the top plate, with the vertical pieces 2a facing outward. A pair of casters 3a are installed at the lower end of the vertical piece 2a at the left and right (outside, inside) positions.
The upper ends of the main leg 3 and the rod-shaped secondary leg 4 are the bearing material 3.
The front and rear main legs 3 and 4 secondary legs are fixedly connected by a longitudinal rod 5, and the left and right main legs 3 and 4 secondary legs are connected horizontally. They are each rotatably connected by a rod 6.

By the way, in this invention, the following restraining devices are respectively arranged on the inner side of each frame beam 2 on the outer side of the front and rear main landing gears 3 (on the left side in the figure).

That is, as shown in FIG. 3, a sliding rod 11 of a required length is attached to the vertical piece 2a of the frame crosspiece 2 at the center on the inner surface side of the frame crosspiece 2 on the outer side of the main landing gear 3.
The sliding rod 1 is supported by a hook-shaped receiving piece 12 attached to the rod so as to be slidable left and right.
The outer end of the top plate 1 and the inner center part of the main leg 3 are rotatably connected via a pin shaft by a support rod 13, and this support rod 13 plays the role of a stop when the top plate 1 is unfolded.

On the inner end side of the sliding rod 11 (the right end side in Fig. 3),
A deployment prevention rod 14 is provided so that its outer end overlaps the front side of the rod 11, and this prevention rod 14 is provided with a weight 14a on the front surface of the inner end (the rear surface, that is, the opposing surface on the rear side), and the sliding rod 11 It is pivoted to the horizontal piece 2b of the frame crosspiece 2 by a vertical pin 14b at an eccentric position close to , parallel to the top plate 1 so as to be rotatable back and forth.
When the top plate is unfolded, the prevention rod 14 is replaced by the sliding rod 11.
is placed parallel to this so that it can slide.

On the other hand, a folding prevention lever 15 is disposed on the outer end side (left end side) of the sliding lever 11, and a portion of the folding prevention lever 15 near the inner end is framed by a pin shaft 15a at a position below the sliding lever 11. Vertical piece 2a of crosspiece 2
The front prevention rod 1 is pivotally attached to the end of the handle lever 16 so as to be pivotable up and down, and the outer end of the handle rod 16 extends in the front-rear direction.
5 (not shown), and when the top plate is unfolded, the inner end is inclined so that it is lifted by the weight of the handle rod 16, and the inner end is connected to the outer end surface of the sliding rod 11 and the horizontal piece 2b of the frame crosspiece. The sliding rod 11 comes into contact with the lower surface of the sliding rod 11 and prevents the sliding rod 11 from moving outward, thereby maintaining the expanded state.

Reference numeral 17 denotes an engagement piece attached to the vertical piece 2a of the frame crosspiece 2, which abuts against the inner edge of the folding prevention rod 15 when the outer end of the rod 15 is lifted and maintains that state.

In Fig. 3, only one side (rear side) is shown, but as can be seen from Fig. 2, the front and back relationship of the members is different on the opposite side (front side) (deployment prevention rod 1
4 is arranged on the rear side of the sliding rod 11 instead of on the front side).

In the unfolded state shown in Figures 2 and 3, the handle rod 1
When the folding prevention lever 15 is rotated and tilted as shown by the chain line,
The inner end comes off the outer end of the sliding rod 11 and comes into contact with the lower engagement piece 17.

This state is maintained for a while by the friction between the inner edge of the folding prevention rod 15 and the engaging piece 17.

In this state, if the top plate 1 is rotated upright about the bearing material 3b of the main leg 3 by pushing down the outer end (left end) or lifting the inner end (right end), the sliding rod 11 is Support rod 13 pin-coupled to this
It will slide outward along the frame crosspiece 2 while being accompanied by.

When the outer end of the sliding rod 11 passes the position of the pin shaft 15a, the rod 11 pushes down the anti-folding rod 15 whose outer end is inclined upward, and as a result, the dotted line in FIG. As shown, the inner end of the folding prevention rod 15 comes off the engagement piece 17, becomes parallel to the horizontal piece 2b of the frame crosspiece 2, and comes into contact with the lower surface of the sliding rod 11.

Therefore, the lower surface of the sliding rod 11 is supported by the folding prevention rod 15 together with the receiving piece 12,
In addition, the inner end side surface is supported by the deployment prevention rod 14, and it moves outward smoothly using these as a guide. Even if the outer end of the rod 13 largely protrudes from the frame crosspiece 2, it continues.

Thus, when the top plate 1 rotates and stands up as shown by the two-dot chain line in figure c, the sliding rod 11 and the folding prevention rod 1
5. The engagement piece 17 connects the top plate 1, that is, the frame crosspiece 2 and the main leg 3
At this time, the deployment prevention rod 14, which was supporting the inner side surface of the sliding rod 11, comes off from the inner end of the sliding rod 11, as shown in Fig. 5. Due to the action of the forward-facing weight 14a, it falls forward along a plane parallel to the top plate 1, and its outer end touches the sliding rod 11.
As a result, the sliding rod 11 is prevented from moving inward, and the folded state of the top plate 1 is maintained.

On the other hand, in this folded state, if the deployment prevention rod 14 is tilted toward the frame crosspiece 2 side as shown by the dotted line in FIG. .

When the top plate 1 is deployed, the support rod 13 rotates upward about the pivot point to the main landing gear 3, the sliding rod 11 slides inward along the frame 2, and when its inner end passes the position of the vertical pin 14b, the deployment prevention rod 1
4 is again parallel to the vertical piece 2a of the frame bar 2 and supports the inner end side surface of the sliding rod 11.

In this way, the sliding rod 11 smoothly slides inward while its inner end side surface is supported by the expansion prevention rod 14 and the lower surface is supported by the receiving piece 12 and the folding prevention rod 15. After the process, the top plate 1,
When the sliding rod 11 etc. return to the position indicated by the solid line, the inner end of the folding prevention rod 15 comes off from the outer end of the sliding rod 11, and the prevention rod 15 is pushed against the pin shaft by the weight of the handle rod 16 connected to the rear end. Rotates downward around 15a,
Its inner end is the outer end of the sliding rod 11 and the horizontal piece 2 of the frame crosspiece 2
b to maintain the top plate 1 in the unfolded state.

Incidentally, if the outer and inner ends of the sliding rod 11 are made oblique so as to be tangent to the rotation circle of the folding prevention rod 15 or the deployment prevention rod 14, rattling during the restraining operation can be prevented.

Also, if the inner end of the support rod 13 does not end at the pivot point for the main landing gear 3 but is extended longer than this,
When folded, the contact area between the support rod 13 and the main leg 3 becomes large, preventing the support rod 13 from swinging sideways, and the sliding rod 1
1. Sliding is performed more stably and smoothly.

As described above, in this invention, when the top plate is folded or unfolded, the deployment prevention rod or the folding prevention rod automatically rotates toward the frame frame side and the sliding rod is moved without touching the restraining device directly. It is easy to operate, the folded and unfolded states can be reliably maintained, and it is safe.Moreover, when unfolded, the support rod connecting the sliding rod and the main landing gear becomes straight and the top The support for the board is strong, and when the sliding rod moves, each prevention rod acts as a guide, allowing smooth movement.Also, all the restraining devices are housed inside the frame beams, so they do not get in the way. It has effects such as good appearance.

[Brief explanation of the drawing]

FIG. 1A is a perspective view of a conventional separable table. Figure B is a perspective view of the folding process. FIG. 2 is a perspective view of a table using the restraining device of this invention. Third
The figure is a perspective view of the deterrent device. Figure 4 is a partially cutaway side view of the main part. Figures a, b, and c are explanatory views of the folded state. FIG. 5 is a partially cutaway perspective view showing the top plate in an upright state. In the figure, 1...top plate, 2...frame crosspiece, 2a...vertical piece, 2b...horizontal piece, 3...main leg, 4...secondary leg,
11... Sliding rod, 12... Receiving piece, 13... Support rod, 14... Deployment prevention rod, 14a... Weight, 1
4b...Vertical pin, 15...Folding prevention rod, 15
a... Pin shaft, 16... Handle rod, 17... Engaging piece.

Claims (1)

[Scope of utility model registration request] Frame crosspieces 2 are attached in parallel to the front and rear of the lower surface of the top plate 1, and main legs 3 having an inverted T-shape are provided at the inner and outer ends of these frame crosspieces 2, with bar-shaped secondary legs 4 and a pair of casters 3a at the lower end. In the table, each of which is rotatably mounted and whose top plate 1 can be folded in a separated state,
Sliding rods 11 of a required length are provided on the outer side of the main legs 3 of the front and rear frame beams 2 along the opposing surfaces of the vertical pieces 2a, and the sliding rods 11 are attached to the vertical pieces 2a. Each of the sliding rods 11 is slidably supported from below by a receiving piece 12, and on the inner end side of each sliding rod 11, a weight 14a whose outer end overlaps the front or rear side of the sliding rod 11 and a weight 14a is provided on the surface facing the inner end. A deployment prevention rod 14 with A folding prevention lever 15 whose outer end is connected by a handle rod 16 in the front-rear direction is disposed on the outer end side of the rod 11, and a portion of the folding prevention lever 15 near the inner end is positioned below the sliding rod 11. It is attached to the vertical piece 2a of each frame crosspiece 2 with a pin shaft 15a so that it can rotate up and down, and when the top plate 1 is unfolded, the inner end of the folding prevention rod 15 is connected to the outer end surface of the sliding rod 11 and the horizontal piece of the frame crosspiece 2. 2b to prevent the sliding rod 11 from sliding outward, and when folding, the outer end of the deployment prevention rod 14 is brought into contact with the inner end of the sliding rod 11 and the vertical piece 2a of the frame crosspiece 2. Contact sliding rod 1
1. A restraining device for a folding table, characterized in that it prevents inward movement of a foldable table.