JP4331295B2

JP4331295B2 - Chair trolley

Info

Publication number: JP4331295B2
Application number: JP00356199A
Authority: JP
Inventors: 貴成根来
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 1999-01-11
Filing date: 1999-01-11
Publication date: 2009-09-16
Anticipated expiration: 2019-01-11
Also published as: JP2000198450A

Description

【０００１】
【発明の属する技術分野】
本発明は、椅子用運搬台車において、その椅子の座及び背の支持部を改良したものに関する。
【０００２】
【従来の技術】
図５及び図６に示す従来の椅子用運搬台車は、左右１対のキャスター(１)付きの前脚(２)の上端から後方へ斜め下方に向かって延び、かつ左右方向を向く前部連結部材(３)により互いに連結された左右１対の座部受け部(４)を形成する前脚フレーム(５)と、左右１対のキャスター(１)付きの後脚(６)の上部間を背部受け部(７)により、また中間部間を後部連結部材(８)により連結されてなる後脚フレーム(９)とを有している。前脚フレーム(５)の座部受け部(４)の後端は、後脚フレーム(９)の後脚(６)の中間部間を連結する後部連結部材(８)に取り付けられている。
左右１対の前脚(２)の下端部と、左右１対の後脚(６)の下端部とは、後方に開口する平面視ほぼコ字状をなす下部連結部材(10)により互いに連結されている。
この台車に多数の椅子(Ａ)を積み重ねた状態が図６に示されている。
【０００３】
【発明が解決しようとする課題】
このような従来の構成では、椅子の座の荷重は、前脚(２)及び後脚(６)により支持される座部受け部(４)により、また椅子の背の荷重は、後脚(６)だけにより支持される背部受け部(７)により受けられるので、後脚(６)に加わる荷重が前脚(２)に加わる荷重よりも多く、アンバランスとなる。
また、座部受け部(４)の傾斜角度が充分にとれないので、椅子が比較的立った高い姿勢で載置されることとなり、安定が悪く、多数個を積むことができない。
【０００４】
本発明は、上述の問題点に鑑み、椅子用運搬台車において、椅子の背を受ける部分を分散して前後脚に加わる荷重を均等化し、また、座部受け部の傾斜角度を充分にとって、椅子がなるべく低く安定して積み重ねることができ、しかも台車を構成する部材を少なくし溶接箇所を最小限とすることを目的としている。
【０００５】
【課題を解決するための手段】
本発明によると、上記課題は、次のようにして解決される。
（１）上下方向を向き、かつ下端が接床するようにした左右１対の前脚の上端から後方へ斜め下方に向かって延びる左右１対の座部受け部により、椅子の座の両側部を受け、上下方向を向き、かつ下端が接床するようにした左右１対の後脚の上部間を連結する左右方向を向く背部受け部により椅子の背を受けるようにし、さらに前記前脚、後脚、座部受け部、及び背部受け部を杆材により形成した椅子用運搬台車において、前脚の上端から後方へ斜め下方に向かって延びる左右１対の座部受け部の後部を上方に向けて曲げるとともに、その後端を前記背部受け部に接合する。
【０００６】
（２）上記(１)項において、左右１対の前脚の下端部と、左右１対の後脚の下端部とを、後方に開口する平面視ほぼコ字状をなす下部連結部材をもって互いに連結する。
【０００７】
（３）上記(１)または(２)項において、左右１対の座部受け部と背部受け部の適所に、緩衝材を取り付ける。
【０００８】
【発明の実施の形態】
図１〜図３は、本発明の椅子用運搬台車の一実施形態を示し、キャスター(１)を下端に有する左右１対の前脚(２)の上端から続く座部受け部(４)間を前部連結部材(３)により連結してなる前脚フレーム(５)、キャスター(１)を下端に有する左右１対の後脚(６)の上部間を背部受け部(７)により連結してなる後脚フレーム(９)、及び前後脚(２)(６)の下部を連結する下部連結部材(10)を具備する点については、従来と変わりない。
【０００９】
しかし、前部フレーム(５)の前脚(２)の上端から後方へ斜め下方に向かって延びる座部受け部(４)は、後脚(６)の下端またはそれよりもさらに下側を指向するように深く折り曲げられ、その後部(4a)は、斜め上方に向かうようにさらに折り曲げられ、かつ後部(4a)の後端は、背部受け部(７)に溶接により取り付けられている。
【００１０】
座部受け部(４)及び背部受け部(７)の要所には、軟質合成樹脂材料のような緩衝材(11)が取り付けられている。
【００１１】
この構成のため、後脚(６)の長さは、図５に示した従来の台車の後脚(６)よりも短くすることができ、（図４と図６を参照）、そのため、後脚の補強を兼ねていた後脚フレーム(９)の後部連結部材(８)（図５）を、省くことができる。
【００１２】
また、座部受け部(４)の傾斜角度を大きくとれるために、図４に示すように、載置する椅子(Ａ)は大きく傾くこととなり、多数の椅子を、低い姿勢で安定して垂直に積み重ねることができる。
【００１３】
この時、椅子(Ａ)の座部は、その両脇を座部受け部(４)により、また、背は、背部受け部(７)により左右方向の中間部を、かつ座部受け部(４)の後部(4a)により両脇を受けられるので、荷重を前後脚(２)(６)に分散して安定的に支持することができる。
【００１４】
【発明の効果】
請求項１記載の発明によれば、椅子を低い姿勢で安定して積み重ねることができ、また、部材点数を減らし、従って溶接箇所を少なくして構造も簡単となり、ローコストで台車を生産することができる。
【００１５】
請求項２記載の発明によれば、請求項１記載の効果に加え、少ない部材で強固なフレームを構成することができる。
【００１６】
請求項３記載の発明によれば、載置する最下段の椅子を傷つけないように保護することができる。
【図面の簡単な説明】
【図１】本発明の椅子用運搬台車の一実施形態の斜視図である。
【図２】同じく、側面図である。
【図３】同じく、平面図である。
【図４】同じく、多数の椅子を積み重ねた状態を示す側面図である。
【図５】従来の椅子用運搬台車の斜視図である。
【図６】同じく、多数の椅子を積み重ねた状態を示す側面図である。
【符号の説明】
(Ａ)椅子
(１)キャスター
(２)前脚
(３)前部連結部材
(４)座部受け部
(4a)後部
(５)前脚フレーム
(６)後脚
(７)背部受け部
(８)後部連結部材
(９)後脚フレーム
(10)下部連結部材
(11)緩衝材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improved chair carriage and an improved seat support and back support.
[0002]
[Prior art]
The conventional chair carriage shown in FIG. 5 and FIG. 6 is a front connecting member that extends rearward and obliquely downward from the upper end of a front leg (2) with a pair of left and right casters (1) and faces left and right. (3) A back support between the front leg frame (5) forming a pair of left and right seat receiving parts (4) connected to each other and a rear leg (6) with a pair of left and right casters (1) A rear leg frame (9) is provided which is connected by the portion (7) and between the intermediate portions by a rear connecting member (8). The rear end of the seat receiving part (4) of the front leg frame (5) is attached to a rear connecting member (8) that connects the middle parts of the rear legs (6) of the rear leg frame (9).
The lower end of the pair of left and right front legs (2) and the lower end of the pair of left and right rear legs (6) are connected to each other by a lower connecting member (10) that opens rearward and has a substantially U-shape in plan view. ing.
FIG. 6 shows a state in which a large number of chairs (A) are stacked on this carriage.
[0003]
[Problems to be solved by the invention]
In such a conventional configuration, the load on the chair seat is caused by the seat receiving part (4) supported by the front leg (2) and the rear leg (6), and the load on the back of the chair is given by the rear leg (6). ), The load applied to the rear leg (6) is greater than the load applied to the front leg (2), resulting in an unbalance.
Further, since the inclination angle of the seat receiving part (4) cannot be taken sufficiently, the chair is placed in a relatively high standing posture, so that the stability is poor and a large number cannot be stacked.
[0004]
In view of the above-described problems, the present invention provides a chair transport cart that disperses the portion receiving the back of the chair, equalizes the load applied to the front and rear legs, and makes the seat receiving portion sufficiently inclined with a sufficient inclination angle. Therefore, it is possible to stack as stably as possible, and to reduce the number of members constituting the carriage and minimize the number of welding points.
[0005]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) The left and right pair of seat receiving portions extending diagonally downward from the upper ends of the pair of left and right front legs facing the vertical direction and having the lower ends in contact with the floor , The back of the chair is received by a back receiving portion facing in the left-right direction that connects between the upper parts of the pair of left and right rear legs whose bottom ends are in contact with each other . The front legs, the rear legs In the chair carrier cart in which the seat receiving part and the back receiving part are formed of a saddle material , the rear part of the pair of left and right seat receiving parts that extends obliquely downward from the upper end of the front leg is bent upward. At the same time, the rear end is joined to the back receiving portion.
[0006]
(2) In the above item (1), the lower ends of the pair of left and right front legs and the lower ends of the pair of left and right rear legs are connected to each other by a lower connecting member having a substantially U-shape in plan view that opens rearward. To do.
[0007]
(3) In the above (1) or (2) term, in place of the seat receiving portion and the back portion receiving portions of the left and right pair, attaching the cushioning material.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show an embodiment of a chair for transportation trolley of the present invention, the seat receiving portion continuing from an upper end of the front leg (2) a pair of left and right with casters (1) to the lower end between (4) A front leg frame (5) connected by a front connection member (3) and a pair of left and right rear legs (6) having a caster (1) at the lower end are connected by a back receiving part ( 7). It is the same as in the prior art in that it includes a rear leg frame (9) and a lower connecting member (10) for connecting lower portions of the front and rear legs (2) and (6).
[0009]
However, the seat receiving part (4) extending obliquely downward from the upper end of the front leg (2) of the front frame (5) is directed to the lower end of the rear leg (6) or further below it. The rear part (4a) is further bent in an obliquely upward direction, and the rear end of the rear part (4a) is attached to the back receiving part (7) by welding.
[0010]
A cushioning material (11) such as a soft synthetic resin material is attached to the important points of the seat receiving part (4) and the back receiving part (7).
[0011]
Due to this configuration, the length of the rear leg (6) can be made shorter than the rear leg (6) of the conventional carriage shown in FIG. 5 (see FIGS. 4 and 6), so The rear connecting member (8) (FIG. 5), which also serves as the leg reinforcement, can be omitted.
[0012]
Further, since the inclination angle of the seat receiving portion (4) can be increased, the chair (A) to be placed is greatly inclined as shown in FIG. Can be stacked.
[0013]
At this time, the seat part of the chair (A) has both sides thereof by the seat part receiving part (4) and the back part by the back part receiving part (7) and the middle part in the left-right direction and the seat part receiving part ( 4) Since both sides can be received by the rear part (4a), the load can be dispersed and supported stably on the front and rear legs (2) and (6).
[0014]
【The invention's effect】
According to the first aspect of the present invention, chairs can be stably stacked in a low posture, and the number of members can be reduced. Therefore, the number of welding points can be reduced, the structure can be simplified, and a cart can be produced at low cost. it can.
[0015]
According to invention of Claim 2, in addition to the effect of Claim 1, a strong frame can be comprised with few members.
[0016]
According to the invention of claim 3, it is possible to protect the lowermost chair to be placed so as not to be damaged.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of a chair carriage according to the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is also a plan view.
FIG. 4 is a side view showing a state in which a large number of chairs are stacked.
FIG. 5 is a perspective view of a conventional chair carriage.
FIG. 6 is a side view showing a state in which a large number of chairs are stacked.
[Explanation of symbols]
(A) Chair
(1) Caster
(2) Front legs
(3) Front connecting member
(4) Seat receiving part
(4a) Rear
(5) Front leg frame
(6) Rear legs
(7) Back receiving part
(8) Rear connection member
(9) Rear leg frame
(10) Lower connecting member
(11) cushioning material

Claims

Vertical orientation, and the seat receiving portion of the lower end from the upper end of the front leg pair of left and right which is adapted to contact the floor right pair extending obliquely downward rearward, receiving both side portions of the chair seat, the upper and lower The back of the chair is received by a back receiving portion facing in the left and right direction that connects between the upper parts of a pair of left and right rear legs whose bottom ends are in contact with the floor, and the front leg, the rear leg, and the seat. In the chair carrier cart in which the receiving part and the back receiving part are formed of a saddle material ,
A chair transport cart characterized in that the rear part of a pair of left and right seat receiving parts extending diagonally downward from the upper end of the front leg is bent upward and the rear end is joined to the back receiving part.

The chair carrier cart according to claim 1, wherein a lower end portion of the pair of left and right front legs and a lower end portion of the pair of left and right rear legs are connected to each other by a lower connecting member having a substantially U-shape in plan view that opens rearward. .

Right and left in place in the seat receiving portion and the back portion receiver pair, according to claim 1 or 2 chair transportation trolley according fitted with cushioning material.