JP2785686B2 - Chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair suitably used for arena seats in a multipurpose hall.

[0002]

2. Description of the Related Art For example, arena seats in a multipurpose hall are:
In general, it is constituted by arranging a number of folding chairs. When a seat is not provided in the arena, the chairs are folded and stored in a warehouse or the like.

[0003]

In this type of chair of the related art, one person can be seated on each leg. In order to accommodate a large number of people in a large arena,
It is necessary to install an extremely large number of chairs one by one while connecting them by a so-called PP band or the like, and it is indispensable to manually remove these chairs after the completion.

Therefore, a great deal of labor and time are required, and some countermeasures are desired.

[0005] An object of the present invention is to provide a chair capable of solving such a problem.

[0006]

In order to achieve the above object, the present invention takes the following measures.
In other words, the chair according to the first invention of the present application is a joining mechanism in which a seat member for plural persons and a back member for plural persons can be detachably attached to a seat supporting part and a back supporting part of a common frame by one-touch operation. , And a plurality of the frames can be stacked in such a manner that the seat support portions and the back support portions are close to each other.

In the chair according to the second aspect of the present invention, a seat body including a seat member and a back member for a plurality of persons is fixed to a support portion of a frame via a joint mechanism detachable by one-touch operation. The frame is configured to be able to be stacked in a plurality of frames in such a posture that the support portions are close to each other.

In a preferred embodiment of the joining mechanism according to the first and second aspects of the present invention, a non-circular through-hole formed in one of the members to be fastened and a loose fit protruding from the other are inserted into the through-hole. And an engaging projection provided with an operating portion capable of passing through the through-hole at the tip of the shaft to be rotated, and operating the operating portion passed through the through-hole to engage the opening end surface of the through-hole. Or an engagement hole formed in one of the members to be fastened and having a large-diameter portion and a small-diameter portion connected in a keyhole shape, and a shaft protruding from the other and corresponding to the small-diameter portion. A stepped pin having a head that can pass through the large diameter portion at the end of the portion, and the head of the stepped pin that has passed through the large diameter portion is connected to each other by the members to be fixed. An example in which the slide can be brought into contact with the opening end surface of the small-diameter portion can be used.

In order to further secure the fastening state in the case where the above-mentioned sliding type joining mechanism is employed, mutual sliding between the members to be fastened can be prohibited by one-touch operation between the members to be fastened. Is preferably provided. As a preferable mode of the slide prohibition mechanism, a cap attached to an end opening portion of the frame and a locking projection protruding from a required portion on the outer periphery of the cap are provided, and the cap is rotated. An example in which the locking projection is engaged with the seat member or the seat body to prohibit the seat member or the seat body from sliding relative to the frame can be given.

In the second aspect of the present invention, in order to prevent collapse of the seat body during stacking, it is preferable to provide a through-hole at or near the boundary between the seat member and the back member of the seat body.

[0011]

Since the chair according to the present invention is provided with the seat member and the back member for a plurality of persons, the seats for the plurality of persons can be installed or removed at once. Therefore, the installation work and the removal work can be performed efficiently.

Further, in the first invention, the seat member and the back member are detachably fixed to the frame.
Therefore, the removed chair can be disassembled, a plurality of plate-shaped seat members and back members can be superimposed, and a plurality of frames can be stacked. In the second invention, the seat body is detachably fixed to the frame. Therefore, it is possible to disassemble the removed chair and stack a plurality of seats and a plurality of frames, each of which is shaped like a side view.

In addition, the seat member and the back member according to the first invention and the seat body according to the second invention can be disassembled because they can be attached to and detached from the frame by one-touch operation. Nevertheless, installation and removal work can be performed quickly.

Specifically, according to the joining mechanism of the third aspect, the seat member and the back member, or the seat member and the back member, or The seat body can be fixed to the frame, and can be detached by applying a reverse operation.

According to a fourth aspect of the present invention,
The seat member and the back member or the seat body can be fixed to the frame simply by inserting and sliding the stepped pin into the engagement hole, and can be detached by applying the reverse operation. In this case, if the slide inhibiting mechanism described in claim 5 is provided, the seat member or the back member fixed to the frame, or the seat body is slid off from the frame by an unexpected external force. Can be prevented. When the slide inhibition mechanism is configured by using an existing cap, the structure can be simplified.

According to the seventh aspect of the present invention, when a plurality of seats are stacked and stored, a common guide rod can be passed through the through hole, thereby preventing the seat from collapsing. It is possible to do.

[0017]

【Example】

First Embodiment (FIGS. 1 to 6) The chair 1 of this embodiment corresponds to the first invention.
As shown in FIGS. 1 and 2, the seat member 2 for a plurality of people and the back member 3 for a plurality of people can be detachably attached to the seat support portion 5 and the back support portion 6 of the common frame 4 by a one-touch operation. They are fixed via the joining mechanisms 7 and 8, respectively.

The seat member 2 is, for example, a hollow thick plate made by blow molding, and has a size that allows a plurality of persons to sit thereon. Elongated concave portions 9 are provided on the upper surface near both ends, respectively, and a through hole 11 is formed in an intermediate portion of the concave portions 9. Protrusions 12 and 13 are integrally formed on the front and rear edges of the lower surface of the seat member 2.

The back member 3 is, for example, a hollow thick plate made by blow molding, and has a size that can be used by a plurality of persons. Elongated depressions 14 are provided vertically on the front surfaces near the both ends, and a through hole 15 is formed in an intermediate portion of the depressions 14. A ridge 16 is formed integrally with the upper edge of the back surface of the back member 3. The width of the back member 3 is set to be slightly smaller than the distance between the ridges 12 and 13 of the seat member.

The frame 4 has left and right standing rods 18 each having a columnar grounding body 17 fixed to the lower end thereof, an upper horizontal member 19 for integrally connecting the upper ends of the both standing rods 18, and both standing rods 19. Middle horizontal member 21 for connecting intermediate portions of rods 18
And a lower horizontal member 22, right and left legs 23 each having one end fixed to each of the grounding members 17 and the other end fixed to the lower horizontal member 22, and a front end of each of the left and right legs 22. And a front end transverse member 24 for connecting the parts. A pair of band plates 25 bent in a flat U-shape are provided between the front end horizontal member 24 and the lower horizontal member 22 to constitute the seat support portion 5, and the upper horizontal member is formed. 19 and middle horizontal member 21
And a pair of band plates 26 are provided between them to form the back support portion 6. The left and right legs 23 have upper ends 23 thereof.
a is smaller than the distance between the lower ends 23b. As shown in FIG. 5, when a plurality of frames 4 are stacked, the seat support portions 5 and the back support portions 6 are connected to each other. Are allowed to undergo proximity polymerization. In this embodiment, the right leg 2 in FIG.
As shown in FIG. 3, the lower end 23b of
Is protruded outward, and a lower end 23a of the left leg 23 is engaged with an engaging hook 27 of another adjacent chair 1. Loop 28
Is fixed by protruding outward.

As shown in FIG. 4, a joining mechanism 7 for fixing the seat member 2 to the seat support portion 5 includes one of the members to be fixed, that is, both end portions 9a of the concave portion 9 of the seat member 2. And a pair of engaging projections 32 protruding from the seat support portion 5 of the frame 4 on the other side. Specifically, the through hole 31
It has a long and narrow hole shape in the front-rear direction. Engaging projection 32
A shaft 33 protruding from the upper surface of the strip 25 and a shaft 3
3 comprises an operating portion 34 rotatably and irremovably attached to the upper end of the operating portion 3. The operating portion 34 is formed in an elongated shape capable of passing through the through hole 31. Then, the operating member 34 having passed through the through-hole 31 is rotated to engage with the opening end face 31 a of the through-hole 31, so that the seat member 2 can be fixed to the seat supporting portion 5 of the frame 4. It has become.

The joining mechanism 8 for fixing the back member 3 to the back support portion 6 has the same structure, and is attached to one of the members to be fixed, that is, to both ends of the concave portion 14 of the back member 3 respectively. The non-circular through hole 31 pierced and the other, that is,
A pair of engaging projections 3 protruding from the back support 6 of the frame 4
2 is provided. Specifically, the through hole 31 provided in the back member 3 has a long and narrow shape in the vertical direction. The engaging projection 32 is provided on a shaft 3 protruding from the front surface of the strip plate 6.
3 and an operation unit 34 rotatably and irremovably attached to the distal end of the shaft 33.
4 is formed in an elongated shape that can pass through the through hole 31. Then, the operation unit 34 passed through the through hole 31
Is rotated to engage the opening end surface 31a of the through hole 31 so that the back member 3 can be fixed to the back support portion 6 of the frame 4.

Since the chair 1 having such a configuration includes the seat member 2 and the back member 3 for a plurality of persons, the seats for the plurality of persons can be installed or removed at a stroke. As a result, installation and removal work can be performed efficiently, and even if thousands of arena seats are installed, the work can be completed in a relatively short time. Becomes

Further, the seat member 2 and the back member 3 are detachably fixed to the frame 4. For this reason, the detached chair 1 is disassembled, and the seat member 2 and the back
By stacking a plurality of frames 4 and stacking a plurality of frames 4, compact storage becomes possible. In addition, each concave part 9 of the seat member 2 and the back member 3,
Since the through-holes 11 and 15 are respectively provided in the intermediate portion of 14, the guide rod 35 common to the through-holes 11 and 15 is provided.
When the plurality of seat members 2 or the back members 3 are overlapped and stored while penetrating through, it is possible to hold the seat members 2 so as not to collapse orderly. Also, in this embodiment, as shown in FIG.
The seat member 2 and the back member 3 can be alternately and compactly superimposed.

In addition, since the seat member 2 and the back member 3 can be attached to and detached from the frame 4 by one-touch operation, installation and removal operations are required despite disassembly and assembly. Can be done quickly. That is, by mounting the seat member 2 on the seat support portion 5 of the frame 4, the engagement protrusion 32 is inserted into the through hole 31 of the seat member 2, thereby exposing on the upper surface side of the seat member 2. The seat member 2 can be fixed to the frame 4 simply by rotating the operation unit 34 by a required angle. In addition, the seat member 2 can be removed from the frame 4 by reversely operating the operation portion 34 by a required angle to match the through hole 31. The back member 3 can be easily attached to and detached from the frame 4 by the same operation.

Second Embodiment (FIGS. 7 to 13) The chair 51 according to the second embodiment corresponds to the second invention, and as shown in FIGS. A seat body 54 including a seat member 52 and a back member 53,
A plurality of frames 55 are fixed to the support portion 56 of the frame 55 via a joining mechanism 57 which is detachable by one-touch operation. It is configured so that it can be performed.

The seat body 54 is, for example, a hollow member formed by blow molding and having a U-shape in a side view. The seat member 52 on which a plurality of persons can sit and a back member 53 corresponding thereto.
Is provided integrally. In addition, protrusions 58 and 59 are formed on the front edge portion and the rear edge portion of the lower surface of the seat member 52, respectively. A through hole 62 is provided in the vicinity of a boundary portion 61 between the seat member 52 and the back member 53 in the seat body 54.

As shown in FIG. 8, the frame 55 has left and right legs 63 having a downward U-shape in a side view, and base rods 64, 65 before and after connecting the lower ends of the legs 63.
Before and after the bridge between the upper ends of both legs 63
6, 67, wherein the leg 63 and the front and rear base rods 64, 65 are integrally formed by a metal pipe. The front and rear horizontal members 66 and 67 are also made of a metal pipe, and a projection 68 for continuous installation is fitted at one end. The supporting portion 56 is provided between the front and rear horizontal members 66 and 67.
Are constructed. The left and right legs 63 of the frame 55 are formed so as to expand downward, so that a plurality of frames 5 are formed.
As shown in FIG. 12, the support members 5 can be stacked so that their support portions 56 are close to each other.

FIG. 8, FIG. 10 and FIG.
As shown in the figure, one of the members to be fastened, namely, an engagement hole 71 formed in each band plate 69 of the frame 55 and having a large diameter portion 72 and a small diameter portion 73 connected in a keyhole shape, and the other. That is, a stepped pin 74 having a head portion 76 protruding from the lower surface of the seat body 54 and capable of passing through the large diameter portion 72 is provided at the tip of a shaft portion 75 corresponding to the small diameter portion 73. Become
The head 76 of the stepped pin 74 that has passed through the large diameter portion 72 can be brought into contact with the opening end face 73a of the small diameter portion 73 by mutual sliding between the seat body 54 and the frame 55.

Reference numerals 78 and 79 denote caps which are detachably fitted to the ends of the horizontal members 66 and 67 of the chair 51. When a plurality of chairs 51 are connected and used, the caps 78 and 79 may be appropriately used. Removed.

Since the chair 51 having such a configuration includes the seat member 52 and the back member 53 for a plurality of persons,
Seats for multiple people can be installed or removed at once. As a result, installation and removal work can be performed efficiently, and even if thousands of arena seats are installed, the work can be completed in a relatively short time. Becomes

Further, the seat body 54 including the seat member 52 and the back member 53 is detachably fixed to the frame 55. For this reason, the detached chair 1 is disassembled, and as shown in FIG. 13, the seat body 54 having the shape of a letter as viewed from the side can be stacked down in a state of being held down to be compactly stored. In this case, a common guide rod 77 can be passed through the through hole 62 of each seat body 54,
As a result, the collapse of the seat 54 can be prevented. Therefore, a large number of seats 54 can be safely stacked to improve storage efficiency. Also, as shown in FIG. 12, the frames 55 can be stacked compactly by being vertically stacked while being shifted laterally by the pipe diameter of the leg 63.

In addition, since the seat body 54 can be attached to and detached from the frame 55 by a one-touch operation of mutual sliding, installation and removal operations can be performed quickly despite the fact that it can be disassembled. . Specifically, the seat body 54 is placed on the support portion 56 of the frame 55 from the state shown in FIG. 10 so that the head portion 76 of the stepped pin 74 passes through the large-diameter portion 72 of the engagement hole 71. Then, it is projected to the lower surface side of the band plate 69, and thereafter, as shown in FIG.
By sliding the seat 54 to one side with respect to the frame 55, the head 76 can be formed on the opening end face of the small diameter portion 73. As a result, the seat body 54 can be fixed to the frame 55. To remove the seat body 54, the seat body 54 only needs to be slid in the opposite direction and the stepped pin 74 is pulled out from the engagement hole 71.

The present invention is not limited to the above-described embodiment. For example, a slide type in which the seat member and the back member are fixed to the frame as in the first embodiment may be used. Alternatively, the rotation-operation-type coupling mechanism 7 (8) may be applied to a mechanism for fixing the seat body to the frame as in the second embodiment.
In the case where the slide type coupling mechanism 57 is applied,
In order to prevent the coupling state from being released by an unexpected external force, a slide inhibition mechanism may be further provided.
The slide inhibition mechanism 78 shown in FIGS. 14 to 18 is provided at the end opening of the frame 55, for example, the horizontal member 6 of the above embodiment.
A cap 81 attached to the end opening 79a of the horizontal member 79 according to the above-mentioned 6 and a locking projection 82 projecting from a required portion on the outer periphery of the cap 81.
The seat body 54 can be prevented from sliding with respect to the frame 55 by rotating the lock member 1 to engage the locking projection 82 with the lower end portion 54 a of the side edge of the seat body 54. For chairs that are often used alone,
As shown in FIG. 14, it is desirable that a pair of caps 81 and 83 attached to both ends of the horizontal member 79 be connected so as to be integrally rotatable by a connecting rod 84 inserted into the horizontal member 79. That is, in this way, the cap 81 for inhibiting the sliding of the seat body 81 can be rotated from any side of the chair, and the disassembly and assembly of the chair can be performed efficiently. Becomes The other cap 8
3, it is not always necessary to provide the locking projection 82,
If the cap 81 has the same shape as that of the cap 81 as shown in FIG.
Even when the operation is performed from the cap 83 side, it is easy to visually recognize whether or not the sliding of the seat body 54 is prohibited, and it is possible to prevent an erroneous operation. FIG.
16 and FIG. 16 show a state in which the locking projection 82 of the cap 81 prohibits the sliding of the seat body 54 mounted on the frame 55, and FIGS. Is shown. If the caps 81 and 83 are provided so as to be detachable from the connecting rod 84, the caps 81 and 83 can be appropriately removed.

[0035]

According to the present invention having the above configuration, seats for a plurality of persons can be installed or removed at a time. As a result, installation and removal work can be performed efficiently, and even if thousands of arena seats are installed, the work can be completed in a relatively short time. Becomes

Further, in the first invention, since the seat member and the back member are detachably fixed to the frame, the removed chair is disassembled and the plate-shaped seat member and the back member are removed. By stacking a plurality of frames and stacking a plurality of frames, compact storage becomes possible. In the second invention, the seat body is detachably fixed to the frame. Therefore, the disassembled chair is disassembled, and a plurality of seats and a plurality of frames that are shaped like a side view are stacked on each other, thereby enabling compact storage. In addition, the seat member and the back member according to the first invention and the seat body according to the second invention can be detachably attached to the frame by one-touch operation. Installation and removal work can be performed quickly.

According to the joining mechanism of the third aspect,
The seat member and the back member, or the seat body can be fixed to the frame only by inserting the engaging protrusion into the through-hole and rotating the operating portion that has penetrated by the required angle. , The installation or removal operation can be performed efficiently.

On the other hand, according to the joining mechanism of the fourth aspect,
The seat member and the back member or the seat body can be fixed to the frame simply by inserting and sliding the stepped pin into the engagement hole, and can be detached by applying the reverse operation. Therefore, it is possible to save the trouble of disassembling and assembling. In this case, if the slide inhibiting mechanism described in claim 5 is provided, the seat member or the back member fixed to the frame, or the seat body is slid off from the frame by an unexpected external force. Can be prevented, and safety can be improved. As described in claim 6, if the slide inhibition mechanism is configured by using an existing cap, it is not necessary to add extra parts, and the structure can be simplified.

According to the seventh aspect of the present invention, when a plurality of seats are stacked and stored, a common guide rod can be passed through the through hole, thereby preventing the seat from collapsing. It is possible to do. Therefore, a large number of seats can be stacked to improve storage efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view of the embodiment.

FIG. 3 is an enlarged perspective view showing a connecting portion of the chair of the embodiment.

FIG. 4 is an enlarged perspective view showing a joining mechanism portion of the embodiment.

FIG. 5 is a perspective view showing a stored state of the frame in the embodiment.

FIG. 6 is a perspective view showing a stored state of a seat member and a back member in the embodiment.

FIG. 7 is a perspective view showing another embodiment of the present invention.

FIG. 8 is an exploded perspective view of the embodiment.

FIG. 9 is an exemplary perspective view showing a connection portion of the chair of the embodiment.

FIG. 10 is a sectional view showing the joining mechanism of the embodiment.

FIG. 11 is a sectional view showing the joining mechanism of the embodiment.

FIG. 12 is a side view showing the stored state of the frame in the embodiment.

FIG. 13 is a side view showing a stored state of the seat body in the embodiment.

FIG. 14 is a perspective view showing a slide inhibition mechanism according to another embodiment of the present invention.

FIG. 15 is a sectional view showing the slide prohibition mechanism.

FIG. 16 is a side view showing the slide inhibition mechanism.

FIG. 17 is a sectional view showing the slide prohibition mechanism.

FIG. 18 is a side view showing the slide inhibition mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chair 2 ... Seat member 3 ... Back member 4 ... Frame 5 ... Seat support part 6 ... Back support part 7 ... Joining mechanism 8 ... Joining mechanism 31 ... Through hole 32 ... Engagement projection 33 ... Shaft 34 ... Operating part 51 ... Chair 52 ... Seat member 53 ... Back member 54 ... Seat body 55 ... Frame 56 ... Support part 57 ... Joining mechanism 71 ... Engagement hole 72 ... Large diameter part 73 ... Small diameter part 74 ... Stepped pin 75 ... Shaft part 76 ... Head Part 78: slide inhibition mechanism 81: cap 82: locking projection

Continuation of the front page (56) References Japanese Utility Model Showa 52-59006 (JP, U) Japanese Utility Model Showa 55-54056 (JP, U) Japanese Utility Model Showa 56-130458 (JP, U) Japanese Utility Model Showa 57-129458 (JP) , U) Japanese Utility Model Showa 55-32165 (JP, U) Japanese Utility Model Showa 53-87715 (JP, U) Japanese Utility Model Showa 47-11798 (JP, Y1) Japanese Utility Model Showa 43-24983 (JP, Y1) 49-14902 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47C 1/12 A47C 3/04 A47C 4/02 A47C 11/00

Claims (7)

(57) [Claims] 1. A seat member for a plurality of persons and a back member for a plurality of persons are respectively fixed to a seat support part and a back support part of a common frame via a joint mechanism detachable by one-touch operation. A chair according to claim 1, wherein a plurality of frames are stackable in a posture in which the seat support portions and the back support portions are close to each other. 2. A chair configured to fasten a seat body including a seat member and a back member for a plurality of persons to a support portion of a frame via a joint mechanism detachable by a one-touch operation, A chair, wherein a plurality of the frames can be stacked in a posture in which the support portions overlap each other. 3. A joining mechanism allows a non-circular through-hole formed in one of the members to be fastened and a through-hole to pass through the other end of a shaft protruding from the other and loosely fitted in the through-hole. And an engaging projection provided with a simple operating portion, wherein the operating portion passed through the through-hole is rotated to be engaged with the opening end surface of the through-hole. Claim 1 or 2
The described chair. 4. An engagement hole formed in one of the members to be fixed and having a large-diameter portion and a small-diameter portion continuous in a keyhole shape.
A stepped pin having a head that is provided on the other side and that can pass through the large diameter portion at the tip of a shaft portion corresponding to the small diameter portion, and a stepped pin that has passed through the large diameter portion. The chair according to claim 1 or 2, wherein the head can be brought into contact with the opening end face of the small diameter portion by mutual sliding of the members to be fixed. 5. The chair according to claim 4, further comprising a slide prohibition mechanism configured to prohibit mutual sliding between the members by a one-touch operation between the members to be fixed. 6. A slide prohibition mechanism comprising a cap mounted on an end opening of a frame, and a locking projection protruding from a required portion on the outer periphery of the cap. 6. The chair according to claim 5, wherein the locking projection is engaged with the seat member or the seat body so that the seat member or the seat body can be prevented from sliding with respect to the frame. 7. The chair according to claim 2, wherein a through hole is provided at or near a boundary between the seat member and the back member in the seat body.