JPS6225151Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a folding table in which a top plate is pivotally connected to a pair of supports so as to be able to stand upright.

Conventionally, as the above-mentioned folding table,
As shown in Japanese Patent Application Laid-open No. 57-45810,
Frame members fixed to both sides of the back of the top plate are pivotally connected to the upper ends of a pair of pillars using pivot members to enable the top plate to stand up.
A locking fitting is pivotally connected to the support with a pivot shaft, an engaging member with which the locking fitting is removably engaged when the top plate is in a horizontal state is fixed to the frame member, and the locking fitting is connected to the engaging member. It is known that a lock spring biased in the engagement direction is supported by the support column.

However, in conventional folding tables of this type, the locking metal fittings and locking springs that make up the locking mechanism were exposed outside the support and frame members, resulting in a poor appearance. There was a problem that it was dangerous for people to get their hands caught and get injured.

Furthermore, as shown in Japanese Utility Model Application No. 58-152137, it is known that a locking mechanism for holding the top plate in a horizontal state is accommodated in the support; If the locking mechanism of the publication was simply housed within the column, there would be many parts that would protrude or be visible from the outside, which would not improve the appearance much, and would increase the number of parts and complicate the structure. There was a problem.

This idea solves the above-mentioned problems by accommodating the locking mechanism within a pair of left and right columns, reducing the number of parts that protrude or are visible from the outside, and simplifying the structure by reducing the number of parts. west,
Moreover, it is an object of the present invention to provide a folding table in which the danger of raising and lowering the top plate is reduced.

An embodiment of this invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a pair of left and right support columns made of square pipes with a rectangular cross section. An underframe 2 is fixed to the lower end of the support 1, and casters 3 are attached to the front and rear ends of the underframe 2, respectively. are attached, and the left and right columns 1 are connected by a connecting member 4 provided between them. Further, 5 is a rectangular top plate, and a frame channel 6 is fixed to the left and right sides of the back surface of the top plate 5, and the frame channel 6 is open at the opposite side to the top plate 5, that is, at the bottom when the top plate 5 is in a horizontal state. The left and right frame channels 6 are connected by a frame pipe 17 made of a square pipe provided between the front and rear thereof. As shown in FIGS. 3 to 6, the upper end of the support column 1 is connected to the frame channel 6 together with the plate-shaped pivot member 7 fixed thereto.
The pivot member 7 is loosely fitted into the pivot member 7 with a pivot bolt 8 and a nut 8a tightened to the pivot bolt 8.
The center side wall 6a of the top plate 5 of the frame channel 6 is pivotally attached to the frame channel 6, so that the top plate 5 can be erected around the axis of the pivot bolt 8. Inside the upper end of the support column 1, a lock fitting 9 is attached to a pivot shaft 10 made of a pipe.
The pivot shaft 10 is fixedly fitted and housed in the support column 1.
It is rotatably supported around an axis. Pivot shaft 1
A lock spring 11 having an intermediate helical portion fitted to the top end of the lock spring 11 is housed in the upper end of the support post 1.
It is locked to. An engagement member 12 having a U-shape in plan, in which an engagement rod 12a that engages with an engagement recess 9a formed in the lock fitting 9 when the top plate 5 is in a horizontal use state is installed near the opening of the frame channel 6. upper base 6
b and is housed within the frame channel 6. Lock mechanism 1 having the lock fitting 9, pivot shaft 10, lock spring 11 and engagement member 12
3 is composed of a left and right pair, and both ends of a lock release shaft 14 made of a pipe are fitted into the pivot shafts 10 of both lock mechanisms 13, and are connected by a spring pin 15. There is a lock release lever 1 on the left and right outside of the pillar 1.
6 is arranged, and the shaft 16a of the lock release lever 16
is inserted into the pivot shaft 10, and the spring pin 1
They are connected by 5. A cap 20 is fitted onto the support 1 so as to cover the upper end opening of the support 1. In addition, a pipe shelf 18 is arranged on the back side of the top plate 5,
Horizontal pipe 18a at one end of the pipe shelf 18 in the front and back direction
Both ends of the shelf stay 19 are rotatably fitted and supported by the pillars 1, and one end of the shelf stay 19 is pivotally connected to the vertical pipe portion 18b of the pipe shelf 18. The other end of the shelf stay 19 is pivotally connected to the side wall 6a of the frame channel 6, The pivot center of both ends of the shelf stay 19, the rotation center of the horizontal pipe 18a, and the pivot bolt 8
A parallelogram is formed at the center.

When the folding table of the embodiment configured as described above is used in a state in which the top plate 5 is horizontal, as shown in FIG. The mating member 12 is engaged, and the lock fitting 9 is in a locked state in which it is biased by the lock spring 11 in the engagement direction, that is, in the counterclockwise direction shown by arrow a in FIG. For this reason, the top plate 5
Also, the frame channel 6 does not swing vertically about the pivot bolt 8. In this state of use, when the lock release lever 16 is pushed down and the lock fitting 9 is rotated clockwise in FIG. 3 against the spring force of the lock spring 11, it engages with the engagement recess 9a of the lock fitting 9. The member 12 is disengaged. In this case, when one lock release 16 is pushed down, a rotational force is applied to the pivot shaft of the other lock metal fitting 9 through the shaft 16a of this lever 16, the pivot shaft 10 of one lock metal fitting 9, and the lock release shaft 14. As a result, both lock fittings and the engaging member are disengaged. When the top plate 5 is rotated around the axis of the pivot bolt 8 in this state, the top plate 5 stands up as shown by the chain line in FIG. 5 and becomes folded, allowing the table to be stored in a small space. In this folded state, when the pressing force of the lock release lever 16 is released, the lock metal fitting 9 rotates counterclockwise in FIG. Part of the support remains in contact with the wall of the support 1. When the upright top plate 5 is rotated around the axis of the pivot bolt 8 and brought down to a horizontal position, the engaging member 12 passes through the inclined surface above the engaging recess 9a of the locking fitting 9 and moves into the engaging recess 9a. , and the above-mentioned top plate 5 becomes in a horizontal state of use.

As explained above, the folding table of this invention has frame channels 6 that open on the opposite side of the top plate 5 fixed to both sides of the back side of the top plate 5, and a pair of left and right supports made of square pipes with a rectangular cross section. 1 is loosely fitted into the frame channel 6, and the frame channel 6 is pivotally connected to the support 1 by the pivot member 7 so that the top plate 5 can be raised and lowered. These locking mechanisms 13 are each provided with a locking mechanism 13.
is fixed to the locking metal fittings 9 and the locking metal fittings 9.
A pivot shaft 10 made of a pipe is rotatably supported in the support column 1, and the upper bottom 6 of the frame channel 6
An engagement rod 12a is installed near the opening of the planar U-shaped engagement fitting 12 fixed to the top plate 5, and when the top plate 5 is in a horizontal state, the engagement recess 9a of the lock fitting 9 is inserted into the engagement rod 12a inside the support 1. A lock spring 11 is disposed inside the column 1 and supported by the column 1, and the lock spring 11 is disposed inside the column 1 and supported on the column 1, and is detachably engaged with the column 12a and biases the lock fitting 9 in the direction of engagement with the engagement rod 12a. Insert the shaft 16a of the lock release lever 16 disposed in the pivot shaft 10 into the pivot shaft 10, and insert the end of the lock release shaft 14 made of a pipe that connects the pivot shafts 10 in the left and right struts 1 into the pivot shaft 10. Fit together,
The shaft 16a, the pivot shaft 10 and the lock release shaft 1
4 are connected by a spring pin 15 press-fitted into these, and these connecting parts are attached to the support column 1 together with the pin 15.
It is housed in the upper end of the. Therefore,
According to this invention, the locking fitting 9 of the locking mechanism 13 and the pivot shaft 1 are provided in the upper end portions of the pair of left and right columns 1.
0, not only the locking spring 11 is housed, but also the engagement member 12 is fixed to the frame channel 6 and located within the upper end of the column 1, and these parts are connected to the column 1.
Since it does not protrude outward, there is no need to get your hands caught or caught on the above-mentioned members constituting the locking mechanism 13 when the top plate 1 is raised or lowered. 16a, a connecting portion of the pivot shaft 10 and the lock release shaft 14, and a spring pin 15 connecting these three are connected to the support 1.
Since it is inside and cannot be seen from the outside, it looks good, and since the shaft 16a, pivot shaft 10, and lock release shaft 14 are fitted together and connected by one spring pin 15, the number of parts is reduced. The advantage is that the structure is simple and has a small amount of noise.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with Fig. 1 being a schematic side sectional view, Fig. 2 being a schematic exploded perspective view, Fig. 3 being a side view with a part of the main part cut away, and Fig. 4 showing the same main parts. FIG. 5 is a perspective view of the main part, and FIG. 6 is an exploded perspective view with a part of the main part cut away. 1... Support column, 5... Top plate, 6... Frame channel, 7... Pivot member, 8... Pivot bolt, 9...
Lock fitting, 9a... Engaging recess, 10... Pivoting shaft, 11... Lock spring, 12... Engaging member, 1
3...Lock mechanism, 14...Lock release shaft, 15
...Spring pin, 16...Lock release lever.

Claims (1)

[Scope of utility model registration request] A frame channel 6 opening on the opposite side of the top plate 5 is fixed to both sides of the back surface of the top plate 5, and the upper ends of a pair of left and right columns 1 made of square pipes with a rectangular cross section are loosely fitted into the frame channel 6. A frame channel 6 is pivotally connected to the support column 1 by a pivot member 7 so that the top plate 5 can be raised and lowered, and a lock mechanism 13 is provided in the upper end of the pair of support columns 1, and these lock mechanisms 13 are as follows. A lock fitting 9 and a pivot shaft 10 made of a pipe fixed to the lock fitting 9 and rotatably supported by the column 1 are housed in the column 1 and fixed to the upper base 6b of the frame channel 6. An engaging rod 12a is installed near the opening of the engaging fitting 12, and when the top plate 5 is in a horizontal state, the engaging recess 9a of the lock fitting 9 is removably engaged with the engaging rod 12a within the support 1. , locking fitting 9 to engaging rod 1
A lock spring 11 biased in the direction of engagement with the lock 2a is disposed within the column 1 and supported by the column 1, and a shaft 1 of a lock release lever 16 is disposed outside the column 1.
6a into the pivot shaft 10, and the ends of the lock release shafts 14 made of pipe that connect the pivot shafts 10 in the left and right struts 1 are fitted into the pivot shaft 10, and the shaft 16
a. A folding table characterized in that a pivot shaft 10 and a lock release shaft 14 are connected by a spring pin 15 press-fitted therein, and these connecting parts are housed together with the pin 15 in the upper end of the support column 1.