JPH0965934A - Folding table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding table having a thin thickness in a folded state and being prevented from clattering of the folded table legs. SOLUTION: A pair of flat top pieces 2a constitutes the flat top 2, and are blow-molded plastic resin plates of identical shapes. The pair 2a are connected each other with hinge fittings 4 to be folded. On the back sides of the flat top pieces 2a, the dent receptacles for the upper legs 13 and those for the lower legs 16 are situated. In the upper receptacle 13, the upper legs 5 and 6 are to be contained, and in the lower receptacle 16, the lower legs 7 are to be contained. On the backside of the flat top 2a, the dents 18 for containing parts are situated. In the dents 18 for containing parts, bolts 31 and nuts that are the connecting parts are to be contained. The dents 13 for containing upper leg are situated circularly along the peripheral of the back side of the flat top, and the dents constitute a reinforcement structure together with plural numbers of the reinforcing dents 30 and 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding table, and more particularly to a folding table that can be folded and carried.

[0002]

2. Description of the Related Art Conventionally, when a folding table is used, a pair of foldable top plates are unfolded, and a leg member is attached to the back surface of the unfolded top plate. I am using it. When not in use, the leg members are removed and the top plate is folded to make it compact and easy to carry and store.

The leg member removed when not in use, for example, is provided with a frame member on the outer periphery of the back surface of the top plate piece, and when both top plates are folded, a box body is formed by the top plate piece and the frame body. ,
The removed leg member is accommodated in the formed box body.

[0004]

However, in the folding table as described above, in order to accommodate the leg members,
A frame material is formed on the outer periphery of the back surface of the top plate piece to form a box when folded. Therefore, when folded, the top plate was thicker by the thickness of the frame material. As a result, the folded table is bulky and hinders portability.

Further, since the leg members are simply accommodated in the space formed in the box body, the leg members rattle and hinder the carrying. The present invention has been made to solve the above problems, and an object thereof is to make it possible to reduce the thickness in a folded state and prevent rattling of a leg member housed therein. It is to provide a folding table that can

[0006]

In order to solve the above problems, the invention according to claim 1 develops a pair of top plate pieces connected in a foldable manner, and the developed pair of top plates. In a folding table in which a leg member is detachably attached to the back surface of a top plate made of a piece, a housing recess for housing the leg member is provided on the back surface of at least one of the pair of top plate pieces. Was recessed according to the shape of the leg member.

According to the first aspect of the invention, the accommodating recess for accommodating the leg member is provided in a shape matching the shape of the leg member. Therefore, when the top plate piece is folded with the leg member accommodated in the accommodation recess, the leg member is accommodated without rattling. Further, since the leg member is accommodated in the accommodating recessed portion provided in the top plate piece, when the top plate piece is folded, the space occupied by the leg member disappears, and the thickness of the top plate is only the thickness of the pair of top plate pieces. Become. As a result, it is not bulky and is easy to carry.

According to a second aspect of the present invention, in the folding table according to the first aspect, the top plate piece is a synthetic resin plate formed by blow molding, and the top surface piece is formed along the outer periphery of the back surface of the synthetic resin plate. The accommodation recess is provided.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the function of the invention described in (1), the accommodation recess is formed along the outer periphery of the back surface. Therefore, the accommodating recesses form the reinforcing structure without increasing the thickness of the top plate in the same arrangement as that of the frame body in the prior art.

The invention according to claim 3 is the folding table according to claim 1 or 2, wherein the pair of top plate pieces have the same shape. According to the invention described in claim 3, since the pair of top plate pieces constituting the top plate have the same shape, it is possible to reduce the number of assembly parts of the folding table.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 2 shows the usage state of the folding table 1, and FIG. 3 shows the folding table 1 in a folded state. In FIG. 2, the folding table 1 is composed of a top plate 2 and legs 3. The top plate 2 is composed of a pair of top plate pieces 2 a, and as shown in FIG. 1, is foldably connected by a hinge 4 fixed to the back surface of each top plate piece 2. The leg 3 is connected to the pair of U-shaped upper limbs 5 and 6 and both ends of each of the upper limbs 5 and 6 4
It consists of the lower limbs 7 of the individual.

The pair of top plate pieces 2a are synthetic resin plates formed by blow molding, and are formed in the same shape. Therefore, only the configuration of the top plate piece 2a will be described below. The pair of top plate pieces 2a having the same shape are rotationally symmetrical with respect to an axis perpendicular to the connecting axis.

As shown in the drawing, a handle hole 8 is formed through the center of the top plate piece 2a on the tip side (non-connecting side), and when the pair of top plate pieces 2a is folded, Plate piece 2a
The handle hole 8 is communicated and serves as a handle for carrying.

A hand-holding portion 9 is provided in the center of the back surface of the top plate piece 2a, and when the pair of top plate pieces 2a are folded together, the hand-holding portions 9 are used as shown in FIG. The recess 10 is formed. When unfolding the top plate piece 2a in the folded state, by putting a hand on the holding recess 10,
It can be easily deployed.

On the back surface of the top plate piece 2a, an engaging protrusion 11 is formed on one side of the handle hole 8 and is engaged at a position symmetrical with the engaging protrusion 11 on the other side of the handle hole 7. A mating recess 12 is formed. Surface fasteners 11a and 12a capable of engaging with each other are attached to the back surfaces of the engaging convex portion 11 and the engaging concave portion 12, respectively. Therefore, when the pair of top plate pieces 2a is folded, the engaging projections 11 of the one top board piece 2a fit with the engaging recesses 12 of the other top board piece 2a, and the respective surface fasteners 1 are inserted.
1a and 12a engage with each other. Also, one top plate piece 2a
The engaging concave portion 12 of the above is fitted with the engaging convex portion 11 of the other top plate piece 2a, and the respective surface fasteners 11a and 12a are engaged with each other. As a result, the pair of folded top plate pieces 2a are kept in the folded state.

On the back surface of the top plate piece 2a, the pair of upper limbs 5 are provided.
An upper limb housing recess 13 is provided as a housing recess for housing the. The upper limb accommodating recess 13 is annularly recessed along the outer periphery of the back surface of the top plate 2a. A portion 13 of the upper limb accommodating recess 13 along the sides of the top plate piece 2a on the front end side and the base end side.
The cross sections of a and 13b are formed in a semicircular shape that is substantially the same as the half of the cross section of the upper limb 5.

Further, the portions 13c and 13d of the upper limb accommodating recess 13 along the sides on both sides of the top plate 2a are formed so that the depth thereof is approximately half the diameter of the upper limbs 5 and 6. The width is also formed to be twice the diameter or more. Part 13c
At the tip center and the base end side of the
4a are formed. The part between the two partition parts 14a is formed so as to expand outward. Similarly, a partition portion 14b is formed at the center of the tip end side and the center of the base end side of the portion 13d of the one upper limb accommodating recess 13, and the portion between both partition portions 14b is formed to be expanded outward. There is.

Then, as shown in FIG. 1, one upper limb 5 (or 6) is accommodated by the portion 13a of the upper limb accommodation recess 13 and the portions 13c and 13d on both sides thereof, and the portion 13b of the upper limb accommodation recess 13 and its portion 13b. The other upper limb 6 (or 5) is accommodated by the portions 13c and 13d on both sides.

On the back surface of the top plate piece 2a, the pair of lower limbs 7 are provided.
A lower limb housing recess 16 is provided as a housing recess for housing the. Four lower leg receiving recesses 16 are provided in parallel in the upper leg receiving recess 13. Each lower limb accommodation recess 1
6 has a semicircular shape whose cross section is substantially the same as half of the cross section of the lower limb 7. Then, as shown in FIG. 1, the lower limbs 7 are accommodated in the respective lower limb accommodation recesses 16.

A component accommodating recess 18 is provided at the center of the back surface of the top plate 2a. Component housing recess 18
Has a rectangular shape, and a cushion 18a made of synthetic resin is attached to the bottom surface thereof. Then, in the component accommodating recess 18, a coupling component for coupling the leg 3 and the top plate piece 2a is accommodated.

Further, assembly grooves 19a and 19b are recessed from the center of the rear surface of the top plate piece 2a toward the corners on the front end side. That is, the assembling grooves 19a and 19b are almost 9
It is formed in a V shape that opens at 0 °. Assembly groove 19a,
The cross section of 19b is formed in an arc shape along the outer peripheral surfaces of the upper limbs 5 and 6, and the depth thereof is shallower than that of the upper limb accommodation recess 13. The length of each of the assembling grooves 19a and 19b is approximately half the length of the upper sides 5a and 6a of the upper limbs 5 and 6. Therefore, when the top plate pieces 2a are unfolded, the assembly grooves 19a, 1 formed by the pair of top plate pieces 2a are formed.
9b has a cross shape.

At the tip positions of both assembly grooves 19a and 19b,
A nut housing base 20 is formed so as to rise from the grooves 19a and 19b, and a nut 21a is embedded in the nut housing base 20. A nut 21b is embedded in the middle position of one of the assembly grooves 19a.

As shown in FIGS. 6 (a) and 6 (b), the upper limb 5 of the leg 3 is formed of a U-shaped metal pipe, and the lower limb 7 is elastically connected and fixed to both ends thereof. The joint 22 for is attached. A connecting portion 23 is formed at the center of the upper side 5a of the upper limb 5. This connecting part 23
The pipe is formed into a flat shape on the upper side, and the thickness of the flat shape is approximately one half of the diameter of the pipe. Connecting part 23
The female screw hole 24 is formed in the. Furthermore, upper limbs 5
Flat fixing portions 25 are formed on both sides of the upper side, respectively. A through hole 26 is formed in each of the fixing portions 25. Further, through holes 27 are formed between the fixed portion 25 and the connecting portion 23, respectively.

Further, as shown in FIG. 6 (c), the upper limb 6 is
Similar to the upper limb 5, a pipe is formed in a U shape, and joints 22 are attached to both ends thereof. Upper side 6 of upper limb 6
A connecting portion 28 is formed at the center of a. The pipe of the connecting portion 28 is formed in a flat shape on the lower side, and the thickness of the flat portion is approximately ½ of the diameter of the pipe. A female screw hole 29 is formed in the connecting portion 28. Further, through holes 26 are formed on both sides of the upper side 6a of the upper limb 6, respectively.
The fixing portion 25 having the is formed. Further, the upper limb 6 has no through hole 27 formed therein.

Then, with both top plate pieces 2a unfolded,
When the upper side 5a of the upper limb 5 is fitted in the assembly groove 19a and the upper piece 6a of the upper limb 6 is fitted in the assembly groove 19b, the connecting portion 23 is arranged at the center of the top plate 2 and the connecting portion 28 is formed.
Contacts the lower side of the connecting portion 23. The upper limbs 5 and 6 are arranged on the same plane, and the through hole 29 of the connecting portion 28 faces the through hole 24 of the connecting portion 23. Then, the through hole 26 of the fixing portion 25 of the upper limb 5 has the nut housing base 20 of the assembly groove 1a.
Of the nut 21a, and the through hole 27 also faces the nut 23 of the nut housing base 22. Further, the through hole 29 of the connecting portion 28 of the lower limb 6 faces the nut 21a of the nut housing base 20 of the assembly groove 19b.

A plurality of reinforcing recesses 30 are provided inside the upper limb receiving recess 13 on the back surface of the top plate piece 2a. Further, on both sides of the engaging convex portion 11 and the engaging concave portion 12,
Reinforcing recesses 31 are provided respectively. Each recess 3
As shown in FIGS. 5A and 5B, 0 is recessed up to near the surface of the top plate piece 2a. The recess 31 is also formed in the same manner.

Next, the operation of the folding table configured as described above will be described. When assembling the folding table 1, first, the leg 3 is assembled by using the upper limbs 5, 6 and the lower limb 7 housed in the recesses 13, 16 in the folded top plate piece 2a. Each connecting portion 23 of both upper limbs 5 and 6,
In the state where 28 are overlapped with each other, both through holes 24, 29
The joint bolt 31 is inserted from the side of the through hole 24. By screwing the joint nut 32 into the tip portion of the joint bolt 31 protruding from the through hole 29, the upper limbs 5 and 6 are connected and fixed in a cross shape. Then, the lower limb 7 is inserted into both ends of the connected upper limbs 5 and 6, and each joint 2
By fixing at 2, the leg 3
Is assembled.

Next, the leg 3 and the top plate 2 are assembled. First, with the top plate piece 2a unfolded face down, the upper piece 5a of the upper limb 5 is fitted into the assembly groove 19a on the back surface of the top plate 2, and the upper piece 6a of the upper limb 6 is fitted into the assembly groove 19b. Let Then, as shown in FIGS. 8 and 9, the through holes 26 of the respective fixing portions 25 of the upper limb 5 face the nuts 21 a of the nut housing base 20, and the through holes 26 of the respective fixing portions 25 of the upper limb 6 receive the nut housing. The nut 21 a of the base portion 20 faces each other. Further, the through hole 27 of the upper limb 5 faces the nut 21b.

In this state, the connecting butterfly bolt 33 is inserted into each through hole 26 and screwed into the nut 21a. As a result, the leg 3 is attached to the top plate 2. Furthermore, the through hole 2
7 through the stabilizing wing bolt 34 to insert the nut 21b
Screw. In this way, after attaching the legs 3 to the top plate 2,
The folding table 1 is turned over and used.

The table 1 assembled in this way is
Since the upper limbs 5 and 6 of the leg 3 are diagonally arranged on the back surface of the top plate 2, even if a large downward force is applied to the central portion of the top plate 2, the top plate piece 2a bends to the opposite side. There is no such thing.

Further, in this table 1, when the legs 3 are connected to the top plate 2, the connection wing bolts 33 are used to connect and fix the legs 3, and the upper limb 5 is attached to each top plate piece 2a near the center thereof. And the wing bolt 34 for stabilization was connected and fixed. Therefore, even if a large downward force is applied to the outer peripheral portion of the top plate 2, the top plate 2 is rotated about the connecting portion of the connecting butterfly bolt 33 as a fulcrum, so that both top plate pieces 2a are bent in the closing direction. There is no fear. As a result, the top plate 2 can always be used in a stable and flat state.

Since the top plate piece 2a is formed by blow molding, a hollow portion (not shown) exists inside thereof.
Therefore, recesses 30 and 31 are provided on the back side of each top plate piece 2a to reinforce the top plate piece 2a so that the top plate piece 2a is unlikely to be deformed even when a bending moment is applied to the top plate piece 2a. In particular, similar to the arrangement of the frame body generally used as a reinforcing structure on the back surface of the top plate of the table, an upper limb housing recess 13 is formed in a ring shape along the outer periphery on the back surface of the top plate 2a. .
Since the upper limb housing recess 13 has a function similar to that of a so-called reinforcing rib, the rigidity of the top plate 2a becomes stronger.

Since the lower limbs 7 are elastically connected to both ends of the upper limbs 5 and 6, by adjusting the length of each lower limb 7, it is possible to arrange the top plate 2 horizontally even in an uneven place. You can

Next, the case of folding and carrying will be described. First, the legs 3 are removed from the top plate 2 by removing the connecting butterfly bolt 33 and the stabilizing butterfly bolt 34. The removed leg 3 is disassembled into upper limbs 5, 6 and lower limb 7. The joint bolts 31, which were disassembled and then removed,
The nut 32 and the bolts 33 and 34 are housed in the component housing recess 18 of the top plate piece 2a. Subsequently, as shown in FIG. 1, the upper limbs 5 and 6 are housed in the upper limb housing portion 13, and the lower limbs 7 are housed in the lower limb housing portion 16.

After the accommodation of the legs 3 is completed, the other top plate piece 2
A is put on the top plate piece 2a accommodating the leg 3. When both top plate pieces 2a are overlapped, the respective surface fasteners 11
a and 12a engage with each other. As a result, the pair of folded top plate pieces 2a are kept in the folded state.

At this time, the upper limb accommodating concave portion 13 has the upper limbs 5, 6
The shape corresponding to the shape of the lower limb 7 and the lower limb accommodation recess 16 are formed to correspond to the shape of the lower limb 7. Therefore, when the top plate piece 2a is folded with the upper limbs 5, 6 and the lower limbs 7 accommodated in the accommodation recesses 13, 16, the upper limbs 5, 6 and the lower limbs 7 are accommodated without rattling. Further, since the upper limbs 5, 6 and the lower limb 7 are accommodated in the upper limb and lower limb accommodating recesses 13, 16 recessed in the top plate piece 2a, the upper limbs 5, 6 and the lower limb 7 occupy when the top plate piece 2a is folded. The space is gone,
The thickness of the top plate 2 is only the thickness of the pair of top plate pieces 2a. As a result, it is not bulky and is easy to carry.

Similarly, the joint bolt 31, the joint nut 32, and the wing bolts 33, 34 are held by the cushion 18a in the component accommodating recess 18 so that their positions do not move, so that there is no rattling.

The hook-and-loop fasteners 11a and 12a are joined to each other only when the engaging projection 11 and the engaging recess 12 are fitted to each other. Therefore, even if a force is applied to the top plate pieces 2a in a direction that shifts them, the engagement projections 11 and the engagement recesses 12 prevent the top plate pieces 2a from being displaced, and thus the surface fasteners 11a and 12a. A force in the direction parallel to the plane is not applied to. As a result, the hook-and-loop fasteners 11a and 12a do not deviate from each other, and the top plate piece 2a does not open accidentally.

As described in detail above, according to the folding table of the present embodiment, the following effects can be obtained. (A) The upper limb and lower limb accommodation recesses 13 and 16 are provided in a shape matching the shapes of the upper limbs 5, 6 and lower limb 7, respectively. Therefore, when the top plate 2a is folded with the upper limbs 5, 6 and the lower limbs 7 accommodated in the accommodation recesses 13, 16, the upper limbs 5, 6 and the lower limbs 7 can be accommodated without rattling.

(B) Since the upper limbs 5, 6 and the lower limb 7 are accommodated in the upper limb and lower limb accommodating recesses 13, 16 recessed in the top plate piece 2a, the thickness of the top board 2 is the thickness of the pair of top board pieces 2a. It will only be. As a result, it is not bulky and is easy to carry.

(C) The joint bolt 31, the joint nut 32, and the butterfly bolts 33 and 34 are attached to the component accommodating recess 1
Since the position is held by the cushion 18a in the position 8 so that the position does not move, there is no rattling and no parts are lost.

(D) Recesses 30 and 31 are provided on the back surface of each top plate piece 2a for reinforcement. Also, the upper limb accommodation recess 1
3 is annularly recessed along the outer periphery to form a reinforcing structure together with the recesses 30 and 31. Therefore, the rigidity of the top plate piece 2a formed by blow molding can be increased.

(E) A pair of top plate pieces 2 constituting the top plate 2
a has the same shape as each other. Therefore, the number of assembly parts of the folding table 1 can be reduced. (F) By adjusting the length of each lower limb 7, the top plate 2 can be arranged horizontally even in an uneven place.

(G) Even if a force is applied to the top plate pieces 2a in a direction that shifts them, the engagement projections 11 and the engagement recesses 12 prevent the top plate pieces 2a from being displaced. Moreover, the hook-and-loop fasteners 11a and 12a are not separated from each other, and the top plate piece 2a is not opened carelessly.

(H) Since the hand-holding portion 9 is provided at the center of the tip of the back surface of the top plate piece 2a, the hand-holding concave portion 10 is formed by both hand-holding portions 9. Therefore, when the top plate piece 2a in the folded state is unfolded, it can be easily unfolded by putting a hand on the hand-holding recess 10.

The present invention is not limited to the above embodiment, but may be configured as follows. (1) The upper limb and lower limb accommodation recesses 13 and 16 may be provided in only one of the pair of top plate pieces 2a.

(2) Not limited to blow molding, the inside may be a solid body. In this case, the reinforcement recesses 30 and 31 are unnecessary. (3) The stabilizing butterfly bolt 34 may be omitted. Further, the joint bolt 31 and the nut 32 may be omitted.

(4) When the leg 3 is not connected to the top plate 2, the component accommodating recess 18 may not be provided. The technical ideas other than the claims that can be grasped from the above embodiment will be described below together with their effects.

(1) In the folding table according to claim 1, an engaging convex portion 11 and an engaging concave portion 12 are provided on the back surface of one top plate piece 2a of the pair of top plate pieces, and the other top plate piece 2a is provided. On the back surface of the plate piece 2a, an engaging recess 12 that fits into the engaging recess 11 and an engaging projection 11 that fits into the engaging recess 12 are provided. According to this configuration, both top plate pieces 2a do not shift when folded.

(2) In the folding table described in (1), the surface fasteners 11a and 12a that are joined to each other are provided on the respective facing surfaces of the engaging projections 11 and the engaging recesses 12.
With this configuration, each top plate piece 2a can be easily folded and held.

[0051]

As described above in detail, according to the first aspect of the invention, the thickness of the table when folded can be reduced, and the leg members housed therein can be prevented from rattling.

According to the invention described in claim 2, in addition to the function of the invention described in claim 1, a table having high rigidity can be obtained. According to the invention as set forth in claim 3, the number of assembly parts of the folding table can be reduced.

[Brief description of drawings]

FIG. 1 is a rear view showing a state in which a folding table is unfolded and a leg member is accommodated.

FIG. 2 is a perspective view showing a usage state of the folding table.

FIG. 3 is a perspective view showing a state in which the folding table is folded.

FIG. 4 is a rear view of the top plate piece.

5A is a sectional view taken along line AA of FIG. 4, and FIG. 5B is a sectional view taken along line BB of FIG.

6A is a front view of an upper limb, FIG. 6B is a bottom view of the same, FIG. 6C is a partial front view of an upper limb, and FIG. 6D is a front view of a lower limb.

FIG. 7 is a perspective view showing a state in which the leg members are assembled.

FIG. 8 is a cross-sectional view of essential parts showing a state in which the leg members are attached to the top plate piece.

FIG. 9 is a sectional view of the same main part.

[Explanation of symbols]

2a ... Top plate piece, 2 ... Top plate, 5, 6 ... Upper limbs as leg members, 7 ... Lower limbs, 13 ... Upper limb accommodation recesses as accommodation recesses, 16 ... Lower limb accommodation recesses.

Claims (3)

[Claims] 1. A folding table formed by unfolding a pair of top plate pieces foldably connected to each other, and detachably attaching leg members to the back surface of the top plate composed of the pair of unfolded top board pieces. In the folding table, at least one top plate piece of the pair of top plate pieces is provided with an accommodation recess for accommodating the leg member in conformity with the shape of the leg member. 2. The folding table according to claim 1, wherein the top plate piece is a synthetic resin plate formed by blow molding, and a housing recess is provided along the outer periphery of the back surface of the synthetic resin plate. 3. The folding table according to claim 1, wherein the pair of top plate pieces have the same shape.