JP4014385B2

JP4014385B2 - Infant chair

Info

Publication number: JP4014385B2
Application number: JP2001318547A
Authority: JP
Inventors: 隆史北川
Original assignee: 北川木工販売株式会社
Priority date: 2001-10-16
Filing date: 2001-10-16
Publication date: 2007-11-28
Anticipated expiration: 2021-10-16
Also published as: JP2003116674A

Description

【０００１】
【発明の属する技術分野】
本発明は、幼児用椅子に関する。
【０００２】
【従来の技術】
幼児用椅子には、着座部と背凭れ部と有する椅子本体を備え、着座部に座った幼児の胴部を取り囲むガード枠を設けたものがある。従来のこの種の幼児用椅子は、ガード枠を椅子本体に対してビス等で固定していた。
また、着座部と背凭れ部と有する椅子本体を備えた他の従来の幼児用椅子には、着座部に座った幼児の胴部を取り囲むガード枠を着脱自在に設けると共に、左右一対の支持腕と該一対の支持腕の前部間に連結されたトレイとを有するトレイ部材を着脱自在に設けたものがある。
【０００３】
【発明が解決しようとする課題】
しかし、ガード枠を椅子本体に対してビス等で固定した従来の幼児用椅子では、ガード枠が邪魔であることもあって、トレイ部材を椅子本体に取り付けできるようになっておらず、幼児が食事等をする際にトレイ部材を使用することができず不便であった。
また、トレイ部材を着脱できるようにした従来の幼児用椅子では、椅子本体にトレイ部材を取り付ける場合には、ガード枠が邪魔になるため、ガード枠を取り外しておく必要があり、従って、トレイ部材を着脱する都度に、ガード枠を取り外したり、取り付けたりしなければならず、トレイ部材の着脱作業が非常に面倒であった。
【０００４】
本発明は上記問題点に鑑み、椅子本体に対してトレイ部材を簡単かつ確実に着脱することができるようにしたものである。
【０００５】
【課題を解決するための手段】
この技術的課題を解決する本発明の技術手段は、着座部４と背凭れ部３とを有する椅子本体１を備え、着座部４に座った幼児の胴部を取り囲むガード枠９が椅子本体１に着脱自在に設けられ、左右一対の支持腕３０と該一対の支持腕３０の前部間に連結されたトレイ３１とを有するトレイ部材２９が、前記ガード枠９と干渉しないように設けられた幼児用椅子において、
ガード枠９の左右側枠部９ａの各後端部に、一対の支持部３２が設けられ、トレイ部材２９の一対の支持腕３０の後端部に、支持軸３３が左右方向内方に突設され、トレイ部材２９が支持軸３３廻りに起立姿勢と使用姿勢とに回動自在となるように、一対の支持軸３３が前記ガード枠９の一対の支持部３２にそれぞれ前側から挿脱自在に係合保持され、トレイ部材２９を前記使用姿勢に規制するように、トレイ３１がガード枠９の前枠部９ｂに上側から接当され、トレイ部材２９を起立姿勢から使用姿勢に回動したときに、前記支持軸３３が前側に移動して支持部３２から外れるのを阻止するべく、ガード枠９の前枠部９ｂに後側から係合してトレイ部材２９の前方移動を規制するストッパー４５が設けられ、トレイ部材２９がガード枠９と共に椅子本体１に着脱可能とされている点にある。
【０００６】
本発明の他の技術手段は、トレイ部材２９を起立回動不能にして使用姿勢に保持するように、ガード枠９にトレイ部材２９をロック解除可能にロックするロック機構３７が設けられている点にある。
本発明の他の技術手段は、前記トレイ部材２９の一対の支持腕３０は、ガード枠９の一対の側枠部９ａの外側に沿うように配置され、一対の支持腕３０と一対の側枠部９ａとの間を塞ぐスペーサ部材４７が支持腕３０に設けられている点にある。
【０００７】
本発明の他の技術手段は、椅子本体１側に、左右一対の保持筒体１０が設けられ、ガード枠９が椅子本体１に着脱可能となるように、一対の保持筒体１０にガード枠９の左右側枠部９ａの後端部が、前側から挿脱自在に嵌合保持されている点にある。
本発明の他の技術手段は、保持筒体１０に対して側枠部９ａが抜脱不能になるように、ロック解除可能にロックするロック機構１２が、前記保持筒体１０とガード枠９の側枠部９ａとの間に設けられている点にある。
【０００８】
【発明の実施の形態】
以下、本発明を図示の実施の形態に従って説明する。
図面は本発明の一実施の形態を示している。図１〜図４において、１は幼児用椅子の椅子本体で、左右一対の脚部材２を有すると共に、左右一対の脚部材２間に取り付けた背凭れ部３と着座部４とを有している。左右一対の脚部材２は、前脚５と後脚６とを備えてなる。
椅子本体１に、着座部４に座った幼児の胴部を取り囲むガード枠９が設けられている。椅子本体１の背凭れ部３の左右両側に左右一対の保持筒体１０が設けられている。この一対の保持筒体１０は、左右一対の脚部材２の各前脚５の上端部の内面に固定され、前脚５との間で前側が開口した筒孔部を形成しており、ガード枠９の左右側枠部９ａの後端部が、一対の各保持筒体１０に前側から挿脱自在に嵌合保持され、これによりガード枠９が椅子本体１に対して着脱可能に取り付けられている。
【０００９】
図６〜８に示すように、一対の保持筒体１０とガード枠９の各側枠部９ａとの間に、ロック機構１２が設けられている。ロック機構１２は、保持筒体１０に設けた係止凹部１３と、左右側枠部９ａの後端部に形成した収納部１４と、収納部１４に収納した係合体１５とを備える。
係合体１５は係合爪１６と操作部１７とを有し、ビス１８等により収納部１４に枢支され、係合体１５はバネ１９によって係合爪１６が収納部１４から下方に突出するように付勢されており、収納部１４を含む側枠部９ａの後端部を保持筒体１０に前側から挿入して嵌合する際に、係合爪１５が保持筒１０の前縁部で押圧されることにより、バネ１９の付勢に抗して係合体１５が上方に弾性変形等により揺動して係合爪１６が収納部１４内に後退した後に、バネ１９の付勢によって係合体１５が元の状態に戻って、係合爪１５が係止凹部１３に自動的に係合するように構成されている。なお、収納部１４にビス２１が螺合され、ビス２１の頭部で、係合体１５が収納部１４から外方突出しないように規制されている。
【００１０】
従って、保持筒体１０に側枠部９ａの後端部を嵌合した際に、ロック機構１２により、保持筒体１０から側枠部９ａが抜脱しないように自動的にロックできると共に、このロック状態のとき、操作部１７を上方に押圧することにより、バネ１９の付勢に抗して係合体１５を上方に揺動させ、係合爪１６が係止凹部１３から外れて、ロックを解除できるようになっている。
図１〜３及び図１１、図１２に示すように、前記ガード枠９と着座部４との間に股ベルト２３が設けられている。ガード枠９の前枠部９ｂの左右中央部に接続具２４が設けられ、股ベルト２３の一端部は着座部４の前側の左右中央部に連結されている。股ベルト２３の他端部は接続片２５を介して、接続具２４に着脱自在に接続されている。即ち、接続具２４の図示省略の挿入口に股ベルト２３の接続片２５を挿入することにより、接続片２５が接続具２４に抜脱不能に係合保持され、接続具２４の図示省略の操作部を押圧操作することにより、接続片２５が接続具２４から外れるようになっている。
【００１１】
図１〜５及び図９において、椅子本体１にトレイ部材２９が、前記ガード枠９と干渉しないように、着脱自在に設けられている。トレイ部材２９は左右一対の支持腕３０と該一対の支持腕３０の前部間に連結されたトレイ（テーブル）３１とを有している。
トレイ部材２９の一対の支持腕３０は、ガード枠９の一対の側枠部９ａの外側に沿うように配置されている。図６〜８にも示すように、ガード枠９の左右側枠部９ａの各後端部に、一対の支持部３２が設けられ、トレイ部材２９の一対の支持腕３０の後端部に、支持軸３３が左右方向内方に突設され、支持軸３３の内方端部に大径の係合片３４が設けられている。
【００１２】
一対の支持部３２には前側が開口した前後方向の係止溝３６が設けられており、支持軸３３を係止溝３６に前側から挿入することにより、係合片３４が外側方に抜脱不能となるように係止溝３６の縁部に係合され、これにより、一対の支持軸３３がガード枠９の一対の支持部３２にそれぞれ前側から挿脱自在に係合保持されて、トレイ部材２９が、ガード枠９乃至椅子本体１に対して、支持軸３３廻りに背凭れ部３側から前方突出する使用姿勢と上方突出する起立姿勢とに回動自在となるように支持されている。
【００１３】
トレイ部材２９のトレイ３１の後部がガード枠９の前枠部９ｂに上側から接当され、これにより、トレイ部材２９の支持軸３３廻りの下側への回動が上記使用姿勢で規制されている。
トレイ３１の後端部の左右方向中央部に、トレイ部材２９を使用姿勢に保持するロック機構３７が設けられている。このロック機構３７は、図１０にも示すように、トレイ３１の下面にビス等で固定された支持体３９と、支持体３９に左右軸４２廻りに揺動自在に支持された係合体４０とを備え、係合体４０はバネ４１により前方側に付勢されると共に、係合体４０の基部が支持体３９の後壁部３９ａに後側から接当することにより、係合体４０は、支持体３９から下方突出した垂下姿勢よりも前側に回動しないように規制されている。従って、バネ４１の付勢によって、係合体４０は、通常実線で示す垂下姿勢に保持されるようになっている。
【００１４】
係合体４０の下端には傾斜面４３が形成されると共に、一対の係合爪４４が設けられており、トレイ部材２９を起立姿勢から使用姿勢に回動したときに、係合体４０の傾斜面４３がガード枠９の前枠部９ｂの上部後縁部に接当して、係合体４０はやや後方に揺動した後に前方に揺動して垂下姿勢に戻り、係合爪４４がガード枠９の前枠部９ｂに下側から係合し、これにより、トレイ部材２９を起立回動不能にして使用姿勢に保持するように、ガード枠９にトレイ部材２９をロックするようになっている。また、このロック状態で、図９に鎖線で示す如く手動により係合体４０をバネ４１の付勢に抗して前側に揺動操作することにより、係合爪４４の前枠部９ｂへの係合を外してロックを解除できるようになっている。
【００１５】
前記ロック機構３７の係合体４０は、ストッパー４５に兼用されている。即ち、トレイ部材２９を起立姿勢から使用姿勢に回動したときに、ストッパー４５（係合体４０）がガード枠９の前枠部９ｂに後側から係合して、ストッパー４５がトレイ部材２９の前方移動を規制し、前記支持軸３３が前側に移動して支持部３２（係止溝３６）から外れるのを阻止するのである。
一対の支持腕３０と一対の側枠部９ａとの間を塞ぐスペーサ部材４７が各支持腕３０に設けられている。スペーサ部材４７によりトレイ部材２９を椅子本体１に取り付けた際の外観状の体裁をよくすると同時に、幼児が支持腕３０と側枠部９ａとの間に指等を挟まないようにしている。なお、図例では、スペーサ部材４７は合成樹脂等により前記支持軸３３と一体に形成されている。
【００１６】
上記実施の形態によれば、椅子本体１にトレイ部材２９を取り付ける場合、椅子本体１にガード枠９を取り付けたままで、図１１に示すように、トレイ部材２９を前上がりに傾斜させ、この状態でトレイ部材２９を前側から椅子本体１の背凭れ部３側に近づけていき、トレイ部材２９の支持軸３２を支持部３２の係止溝３６に前側から挿入する。すると、係合片３４が外側方に抜脱不能となるように係止溝３６の縁部に係合され、一対の支持軸３３が、ガード枠９の一対の支持部３２にそれぞれ前側から挿脱自在に係合保持されて、トレイ部材２９が、ガード枠９乃至椅子本体１に対して、支持軸３３廻りに使用姿勢と起立姿勢とに回動自在となるように支持される。その後は、図１２に示すように、トレイ部材２９を支持軸３３廻りに使用姿勢側に回動すればよく、この回動により、トレイ部材２９のトレイ３１がガード枠９の前枠部９ｂに上側から接当して、トレイ部材２９が使用姿勢に規制される。このとき、ストッパー４５がガード枠９の前枠部９ｂに後側から係合して、ストッパー４５がトレイ部材２９の前方移動を規制する。また、係合体４０の係合爪４４がガード枠９の前枠部９ｂに下側から係合し、トレイ部材２９を使用姿勢に保持するように、ロック機構３７がトレイ部材２９をガード枠９にロックする。
【００１７】
従って、椅子本体１からガード枠９を取り外すことなく、トレイ部材２９を椅子本体１に簡単かつ確実に取り付けることができる。しかも、このときガード枠９をトレイ部材２９を使用姿勢に保持する支持部材として有効に利用することができる。
また、トレイ部材２９がガード枠９に取り付けられ、トレイ部材２９がガード枠９と共に椅子本体１に着脱可能とされているので、ガード枠９を椅子本体１から着脱することによって、トレイ部材２９とガード枠９とを同時に簡単に取り付け及び取り外しすることができるため、例えば、幼児を椅子に座わらせる際に、トレイ部材２９をガード枠９に取り付けたままの状態で、ガード枠を椅子本体１から取り外した後に、幼児を椅子本体１に座わらせ、その後にガード枠９を椅子本体１に取り付けることにより、幼児を椅子本体１に簡単に座わらせて、トレイ部材２９及びガード枠９を便利に使用することができる。
【００１８】
また、トレイ部材２９を椅子本体１から取り外すには、まず、手で係合体４０をバネ４１の付勢に抗して後側に揺動操作することにより、係合爪４４の前枠部９ｂへの係合を外して、ロック機構３７のロックを解除し、その後、トレイ部材２９を支持軸３３廻りに回動して、前上がりに傾斜させた後、トレイ部材２９を椅子本体１に対して前側に移動して、支持軸３３を係止溝３６から抜き取ればよく、トレイ部材２９を椅子本体１から簡単に取り外すことができる。このとき、ガード枠９は椅子本体１に対して取り付けられたままであるから、ガード枠９を利用できる状態で直ちに椅子を使用できる。
【００１９】
なお、前記実施の形態では、ガード枠９の左右側枠部９ａの各後端部に、一対の支持部３２が設けられ、トレイ部材２９の一対の支持腕３０の後端部に、支持軸３３が左右方向内方に突設され、一対の支持軸３３が前記ガード枠９の一対の支持部３２にそれぞれ前側から挿脱自在に係合保持され、これにより、トレイ部材２９が背凭れ部３側から前方突出する使用姿勢と上方突出する起立姿勢とに回動可能になるように、トレイ部材２９の一対の支持腕３０の後端側が、左右方向の支持軸３３廻りに回動可能に支持されているが、これに代え、トレイ部材２９の一対の支持腕３０の後端部に、一対の支持部３２を設け、ガード枠９の左右側枠部９ａの各後端部に、支持軸３３が左右方向外方に突設し、ガード枠９の一対の支持軸３３に対して支持腕３０の一対の支持部３２をそれぞれ前側から挿脱自在に係合保持し、これにより、トレイ部材２９が背凭れ部３側から前方突出する使用姿勢と上方突出する起立姿勢とに回動可能になるように、トレイ部材２９の一対の支持腕３０の後端側を、左右方向の支持軸３３廻りに回動可能に支持するようにしてもよい。
【００２０】
また、前記実施の形態では、トレイ部材２９が背凭れ部３側から前方突出する使用姿勢と上方突出する起立姿勢とに回動可能になるように、トレイ部材２９の一対の支持腕３０の後端側が、左右方向の支持軸３３廻りに回動可能に支持され、トレイ部材２９を前記使用姿勢に規制するように、トレイ３１がガード枠９の前枠部９ｂに上側から接当され、ガード枠９にトレイ部材２９をロック解除可能にロックするロック機構３７が設けられているが、これに代え、トレイ部材２９のトレイ等の前端側を、ガード枠９の前枠部９ｂ等に左右方向の支持軸３３廻りに回動可能に支持し、トレイ部材２９の側枠部９ａ等の後端側をロック機構３７等で椅子本体１又はガード枠９の後端部等にロック解除可能にロックするようにしてもよい。
【００２１】
また、前記実施の形態では、ロック機構３７の係合体４０を、トレイ部材２９の前方移動を規制するストッパー４５に兼用しているが、これに代え、トレイ部材２９の前方移動を規制するストッパー４５をロック機構３７とは別体に構成するようにしてもよい。
【００２２】
【発明の効果】
本発明によれば、椅子本体１に対してガード枠９を取り付けたままで、椅子本体１にトレイ部材２９を簡単かつ確実に着脱することができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示す全体斜視図である。
【図２】同トレイ部材を取り外した状態の全体斜視図である。
【図３】同全体側面図である。
【図４】同全体平面図である。
【図５】同トレイ部材の底面図である。
【図６】同ガード枠の側面図である。
【図７】同ガード枠後部の底面図である。
【図８】同ガード枠前部及び保持筒体の側面図である。
【図９】同ガード枠及びトレイ部材の支持軸及びロック機構部分を示す側断面図である。
【図１０】同ロック機構の正面図である。
【図１１】同トレイ部材を取り付ける工程を示す側面図である。
【図１２】同トレイ部材を取り付ける他の工程を示す側面図である。
【符号の説明】
１椅子本体
３背凭れ部
４着座部
９ガード枠
９ａ側枠部
９ｂ前枠部
１０保持筒体
１２ロック機構
２９トレイ部材
３０支持腕
３１トレイ
３２支持部
３３支持軸
３７ロック機構
４５ストッパー
４７スペーサ部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an infant chair.
[0002]
[Prior art]
Some infant chairs include a chair body having a seating portion and a backrest portion, and are provided with a guard frame surrounding the torso of the infant sitting on the seating portion. In the conventional infant chair of this type, the guard frame is fixed to the chair body with screws or the like.
In addition, other conventional infant chairs having a chair body having a seating portion and a backrest portion are provided with a guard frame that surrounds the torso of the infant sitting on the seating portion, and a pair of left and right support arms. And a tray member having a tray connected between the front portions of the pair of support arms.
[0003]
[Problems to be solved by the invention]
However, in the conventional infant chair in which the guard frame is fixed to the chair body with a screw or the like, the guard frame may be an obstacle, and the tray member cannot be attached to the chair body. The tray member could not be used when eating and so on, which was inconvenient.
In addition, in the conventional infant chair in which the tray member can be attached and detached, when the tray member is attached to the chair body, the guard frame needs to be removed because the guard frame is obstructed. Every time the frame is attached / detached, the guard frame has to be removed or attached, and the work of attaching / detaching the tray member is very troublesome.
[0004]
In view of the above-described problems, the present invention is configured to allow a tray member to be easily and reliably attached to and detached from a chair body.
[0005]
[Means for Solving the Problems]
The technical means of the present invention for solving this technical problem includes a chair body 1 having a seating portion 4 and a backrest portion 3, and a guard frame 9 surrounding the trunk of an infant sitting on the seating portion 4 is a chair body 1. A tray member 29 having a pair of left and right support arms 30 and a tray 31 connected between the front portions of the pair of support arms 30 is provided so as not to interfere with the guard frame 9 . In the infant chair,
A pair of support portions 32 is provided at each rear end portion of the left and right side frame portions 9 a of the guard frame 9, and a support shaft 33 projects inward in the left-right direction at the rear end portions of the pair of support arms 30 of the tray member 29. The pair of support shafts 33 can be inserted into and removed from the pair of support portions 32 of the guard frame 9 from the front side so that the tray member 29 can rotate between the standing posture and the use posture around the support shaft 33. The tray 31 is brought into contact with the front frame portion 9b of the guard frame 9 from above so as to restrict the tray member 29 to the use posture, and the tray member 29 is rotated from the standing posture to the use posture. Sometimes, the stopper that engages the front frame portion 9b of the guard frame 9 from the rear side to restrict the forward movement of the tray member 29 in order to prevent the support shaft 33 from moving forward and coming off the support portion 32. 45, and the tray member 29 and the guard frame 9 In that it is detachable in the chair body 1.
[0006]
Another technical means of the present invention is that a lock mechanism 37 for locking the tray member 29 so as to be unlocked is provided on the guard frame 9 so that the tray member 29 cannot be raised and rotated and is held in a use posture. It is in.
According to another technical means of the present invention, the pair of support arms 30 of the tray member 29 are arranged along the outside of the pair of side frame portions 9a of the guard frame 9, and the pair of support arms 30 and the pair of side frames are arranged. The spacer member 47 that closes the space between the portions 9 a is provided on the support arm 30.
[0007]
According to another technical means of the present invention, a pair of left and right holding cylinders 10 are provided on the chair body 1 side, and the guard frames 9 are detachably attached to the chair body 1 so that the guard frames 9 are detachable from the chair body 1. 9 is that the rear end portions of the left and right side frame portions 9a are fitted and held so as to be detachable from the front side.
According to another technical means of the present invention, the lock mechanism 12 that locks the holding cylinder 10 and the guard frame 9 so as to be unlockable so that the side frame portion 9 a cannot be removed from the holding cylinder 10. It exists in the point provided between the side frame parts 9a.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described according to the illustrated embodiments.
The drawings show an embodiment of the present invention. 1 to 4, reference numeral 1 denotes a chair body of an infant chair, which has a pair of left and right leg members 2, and has a backrest portion 3 and a seating portion 4 attached between the pair of left and right leg members 2. Yes. The pair of left and right leg members 2 includes a front leg 5 and a rear leg 6.
The chair main body 1 is provided with a guard frame 9 that surrounds the torso of the infant sitting on the seat 4. A pair of left and right holding cylinders 10 are provided on the left and right sides of the backrest 3 of the chair body 1. The pair of holding cylinders 10 are fixed to the inner surfaces of the upper ends of the front legs 5 of the pair of left and right leg members 2, and form a cylindrical hole portion that opens to the front leg 5. The rear end portions of the left and right side frame portions 9a are fitted and held to the pair of holding cylinders 10 so as to be detachable from the front side, whereby the guard frame 9 is detachably attached to the chair body 1. .
[0009]
As shown in FIGS. 6 to 8, a lock mechanism 12 is provided between the pair of holding cylinders 10 and the side frame portions 9 a of the guard frame 9. The lock mechanism 12 includes a locking recess 13 provided in the holding cylinder 10, a storage portion 14 formed at the rear end of the left and right side frame portion 9 a, and an engagement body 15 stored in the storage portion 14.
The engaging body 15 has an engaging claw 16 and an operating portion 17, and is pivotally supported by the storage portion 14 by screws 18 or the like. The engaging body 15 is so arranged that the engaging claw 16 protrudes downward from the storage portion 14 by a spring 19. When the rear end portion of the side frame portion 9 a including the storage portion 14 is inserted and fitted into the holding cylinder 10 from the front side, the engaging claw 15 is at the front edge portion of the holding cylinder 10. By being pressed, the engagement body 15 swings upward due to elastic deformation or the like against the bias of the spring 19 and the engagement claw 16 retracts into the storage portion 14, and then is engaged by the bias of the spring 19. The united body 15 returns to its original state, and the engaging claw 15 is configured to automatically engage with the locking recess 13. A screw 21 is screwed into the storage portion 14, and the engaging body 15 is restricted by the head of the screw 21 from protruding outward from the storage portion 14.
[0010]
Therefore, when the rear end portion of the side frame portion 9a is fitted to the holding cylinder body 10, the lock mechanism 12 can automatically lock the side frame portion 9a so as not to be detached from the holding cylinder body 10, and this When in the locked state, by pressing the operating portion 17 upward, the engaging body 15 is swung upward against the bias of the spring 19, and the engaging claw 16 is disengaged from the locking recess 13, and the lock is released. It can be canceled.
As shown in FIGS. 1 to 3, 11, and 12, a crotch belt 23 is provided between the guard frame 9 and the seat portion 4. A connecting tool 24 is provided at the left and right central portion of the front frame portion 9 b of the guard frame 9, and one end portion of the crotch belt 23 is coupled to the front left and right central portion of the seating portion 4. The other end of the crotch belt 23 is detachably connected to the connection tool 24 via a connection piece 25. That is, by inserting the connection piece 25 of the crotch belt 23 into the insertion port (not shown) of the connection tool 24, the connection piece 25 is engaged and held with the connection tool 24 so that it cannot be removed. By pressing the part, the connecting piece 25 is detached from the connecting tool 24.
[0011]
1 to 5 and 9, a tray member 29 is detachably provided on the chair body 1 so as not to interfere with the guard frame 9. The tray member 29 has a pair of left and right support arms 30 and a tray (table) 31 connected between the front portions of the pair of support arms 30.
The pair of support arms 30 of the tray member 29 are arranged along the outside of the pair of side frame portions 9 a of the guard frame 9. As shown also in FIGS. 6 to 8, a pair of support portions 32 is provided at each rear end portion of the left and right side frame portions 9 a of the guard frame 9, and a pair of support arms 30 of the tray member 29 is provided at the rear end portions of the pair of support arms 30. A support shaft 33 protrudes inward in the left-right direction, and a large-diameter engagement piece 34 is provided at the inner end of the support shaft 33.
[0012]
The pair of support portions 32 is provided with a front-rear direction locking groove 36 opened on the front side. By inserting the support shaft 33 into the locking groove 36 from the front side, the engagement piece 34 is pulled out outward. The pair of support shafts 33 are engaged with and held by the pair of support portions 32 of the guard frame 9 so as to be detachable from the front side, respectively, so that they cannot be made. The member 29 is supported by the guard frame 9 or the chair body 1 so as to be rotatable between a use posture projecting forward from the backrest 3 side around the support shaft 33 and a standing posture projecting upward. .
[0013]
The rear portion of the tray 31 of the tray member 29 is brought into contact with the front frame portion 9b of the guard frame 9 from above, whereby the downward rotation of the tray member 29 around the support shaft 33 is restricted by the use posture. Yes.
A lock mechanism 37 that holds the tray member 29 in a use posture is provided at the center in the left-right direction at the rear end of the tray 31. As shown in FIG. 10, the lock mechanism 37 includes a support 39 fixed to the lower surface of the tray 31 with screws and the like, and an engagement body 40 supported on the support 39 so as to be swingable around a left and right axis 42. The engaging body 40 is urged forward by a spring 41, and the engaging body 40 comes into contact with the rear wall portion 39a of the supporting body 39 from the rear side. It is controlled so that it does not turn to the front rather than the hanging posture protruding downward from 39. Therefore, the engagement body 40 is normally held in the hanging posture shown by the solid line by the bias of the spring 41.
[0014]
An inclined surface 43 is formed at the lower end of the engaging body 40 and a pair of engaging claws 44 are provided. When the tray member 29 is rotated from the standing position to the using position, the inclined surface of the engaging body 40 is provided. 43 contacts the upper rear edge of the front frame portion 9b of the guard frame 9, and the engaging body 40 swings slightly rearward and then swings forward to return to the hanging posture. 9 is engaged with the front frame portion 9b from the lower side, whereby the tray member 29 is locked to the guard frame 9 so that the tray member 29 cannot be rotated upright and is held in a use posture. . Further, in this locked state, as shown by a chain line in FIG. 9, the engaging body 40 is manually operated to swing forward against the bias of the spring 41, whereby the engaging claw 44 is engaged with the front frame portion 9b. It can be unlocked by unlocking.
[0015]
The engaging body 40 of the lock mechanism 37 is also used as a stopper 45. That is, when the tray member 29 is rotated from the standing posture to the use posture, the stopper 45 (engagement body 40) is engaged with the front frame portion 9b of the guard frame 9 from the rear side, and the stopper 45 is attached to the tray member 29. The forward movement is restricted, and the support shaft 33 is prevented from moving to the front side and coming off from the support portion 32 (locking groove 36).
Each support arm 30 is provided with a spacer member 47 that closes the space between the pair of support arms 30 and the pair of side frame portions 9a. The appearance of the tray member 29 when the tray member 29 is attached to the chair body 1 by the spacer member 47 is improved, and at the same time, the infant is prevented from pinching fingers or the like between the support arm 30 and the side frame portion 9a. In the illustrated example, the spacer member 47 is integrally formed with the support shaft 33 by synthetic resin or the like.
[0016]
According to the above embodiment, when the tray member 29 is attached to the chair body 1, the tray member 29 is tilted forward as shown in FIG. 11 with the guard frame 9 attached to the chair body 1, and this state Then, the tray member 29 is brought closer to the backrest 3 side of the chair body 1 from the front side, and the support shaft 32 of the tray member 29 is inserted into the locking groove 36 of the support portion 32 from the front side. Then, the engagement piece 34 is engaged with the edge of the locking groove 36 so that it cannot be removed outward, and the pair of support shafts 33 are respectively inserted into the pair of support portions 32 of the guard frame 9 from the front side. The tray member 29 is supported so as to be freely disengageable and rotatable with respect to the guard frame 9 or the chair body 1 so as to be rotatable between a use posture and a standing posture around the support shaft 33. Thereafter, as shown in FIG. 12, the tray member 29 may be rotated to the use posture side around the support shaft 33, and by this rotation, the tray 31 of the tray member 29 is moved to the front frame portion 9 b of the guard frame 9. The tray member 29 is regulated to the use posture by contacting from above. At this time, the stopper 45 engages with the front frame portion 9 b of the guard frame 9 from the rear side, and the stopper 45 restricts the forward movement of the tray member 29. Further, the locking mechanism 37 holds the tray member 29 in the guard frame 9 so that the engaging claw 44 of the engaging body 40 engages with the front frame portion 9b of the guard frame 9 from below and holds the tray member 29 in the use posture. Lock to.
[0017]
Therefore, the tray member 29 can be easily and reliably attached to the chair body 1 without removing the guard frame 9 from the chair body 1. In addition, at this time, the guard frame 9 can be effectively used as a support member for holding the tray member 29 in the use posture.
Further, since the tray member 29 is attached to the guard frame 9 and the tray member 29 can be attached to and detached from the chair main body 1 together with the guard frame 9, the tray member 29 and the tray member 29 can be attached to and detached from the chair main body 1. Since the guard frame 9 can be easily attached and detached simultaneously, for example, when the infant is seated on the chair, the guard frame is attached to the chair body 1 with the tray member 29 still attached to the guard frame 9. After being removed from the chair body 1, the infant is sat down on the chair body 1, and then the guard frame 9 is attached to the chair body 1, so that the infant can be easily seated on the chair body 1, and the tray member 29 and the guard frame 9 are Can be used conveniently.
[0018]
Further, in order to remove the tray member 29 from the chair body 1, first, the engaging body 40 is swung to the rear side against the urging force of the spring 41 by hand, thereby the front frame portion 9 b of the engaging claw 44. Is released, and the lock mechanism 37 is unlocked. Thereafter, the tray member 29 is rotated around the support shaft 33 and tilted forward, and then the tray member 29 is moved relative to the chair body 1. Thus, the support shaft 33 may be removed from the locking groove 36 by moving to the front side, and the tray member 29 can be easily detached from the chair body 1. At this time, since the guard frame 9 remains attached to the chair body 1, the chair can be used immediately in a state where the guard frame 9 can be used.
[0019]
In the embodiment, a pair of support portions 32 is provided at each rear end portion of the left and right side frame portions 9 a of the guard frame 9, and a support shaft is provided at the rear end portions of the pair of support arms 30 of the tray member 29. 33 protrudes inward in the left-right direction, and the pair of support shafts 33 are engaged and held by the pair of support portions 32 of the guard frame 9 so as to be detachable from the front side, whereby the tray member 29 is backrested. The rear end sides of the pair of support arms 30 of the tray member 29 are rotatable about the support shaft 33 in the left-right direction so that the use posture protruding forward from the third side and the standing posture protruding upward can be rotated. However, instead of this, a pair of support portions 32 are provided at the rear end portions of the pair of support arms 30 of the tray member 29, and are supported at the rear end portions of the left and right side frame portions 9 a of the guard frame 9. The shaft 33 protrudes outward in the left-right direction, and with respect to the pair of support shafts 33 of the guard frame 9 The pair of support portions 32 of the holding arm 30 are respectively engaged and held so as to be detachable from the front side, whereby the tray member 29 is rotated between the use posture in which the tray member 29 protrudes forward from the backrest portion 3 side and the standing posture in which the tray member 29 protrudes upward As may be possible, the rear end sides of the pair of support arms 30 of the tray member 29 may be supported so as to be rotatable around the support shaft 33 in the left-right direction.
[0020]
Further, in the above-described embodiment, the rear of the pair of support arms 30 of the tray member 29 is configured so that the tray member 29 can rotate between a use posture protruding forward from the backrest 3 side and a standing posture protruding upward. The end 31 is supported so as to be rotatable around the support shaft 33 in the left-right direction, and the tray 31 is brought into contact with the front frame portion 9b of the guard frame 9 from above so as to restrict the tray member 29 to the use posture. The frame 9 is provided with a lock mechanism 37 that locks the tray member 29 so that the tray member 29 can be unlocked. Instead, the front end side of the tray of the tray member 29 is moved to the front frame portion 9b of the guard frame 9 in the horizontal direction The rear end side of the side frame portion 9a of the tray member 29 is locked to the rear end portion of the chair body 1 or the guard frame 9 by the lock mechanism 37 or the like so as to be unlockable. You may make it do.
[0021]
In the above embodiment, the engaging body 40 of the lock mechanism 37 is also used as the stopper 45 that restricts the forward movement of the tray member 29. Instead, the stopper 45 that restricts the forward movement of the tray member 29 is used. May be configured separately from the lock mechanism 37.
[0022]
【The invention's effect】
According to the present invention, the tray member 29 can be easily and reliably attached to and detached from the chair body 1 with the guard frame 9 attached to the chair body 1.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing an embodiment of the present invention.
FIG. 2 is an overall perspective view with the tray member removed.
FIG. 3 is an overall side view of the same.
FIG. 4 is a plan view of the same.
FIG. 5 is a bottom view of the tray member.
FIG. 6 is a side view of the guard frame.
FIG. 7 is a bottom view of the rear part of the guard frame.
FIG. 8 is a side view of the front part of the guard frame and the holding cylinder.
FIG. 9 is a side sectional view showing a support frame and a lock mechanism portion of the guard frame and the tray member.
FIG. 10 is a front view of the lock mechanism.
FIG. 11 is a side view showing a process of attaching the tray member.
FIG. 12 is a side view showing another process for attaching the tray member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Chair main body 3 Backrest part 4 Seating part 9 Guard frame 9a Side frame part 9b Front frame part 10 Holding cylinder 12 Lock mechanism 29 Tray member 30 Support arm 31 Tray 32 Support part 33 Support shaft 37 Lock mechanism 45 Stopper 47 Spacer member

Claims

A guard frame (9) surrounding the torso of an infant sitting on the seat (4 ) is attached to and detached from the chair body (1). The chair body (1) has a seat (4) and a backrest (3). A tray member (29), which is freely provided and has a pair of left and right support arms (30) and a tray (31) connected between the front portions of the pair of support arms (30), includes the guard frame (9). In the infant chair provided so as not to interfere with
A pair of support portions (32) are provided at each rear end portion of the left and right side frame portions (9a) of the guard frame (9), and at a rear end portion of the pair of support arms (30) of the tray member (29), A pair of support shafts (33) is provided so that the support shaft (33) protrudes inward in the left-right direction, and the tray member (29) is rotatable about the support shaft (33) between a standing posture and a use posture. The tray (31) is secured to the pair of support portions (32) of the guard frame (9) so as to be detachably engaged from the front side, and the tray member (29) is restricted to the use posture. When the tray member (29) is pivoted from the upright position to the use position, the support shaft (33) moves to the front side and contacts the front frame portion (9b) of (9) from above. 32) to prevent it from coming off from the rear frame, it engages with the front frame part (9b) of the guard frame (9) from the rear side. (29) a stopper for restricting the forward movement (45) is provided in the infant chair, characterized in that the tray member (29) is detachable to the chair body (1) with guard frame (9).

A locking mechanism (37) for locking the tray member (29) so that the tray member (29) can be unlocked is provided on the guard frame (9) so that the tray member (29) cannot be rotated upright. The infant chair according to claim 1 , characterized in that:

The pair of support arms (30) of the tray member (29) is disposed along the outside of the pair of side frame portions (9a) of the guard frame (9), and the pair of support arms (30) and the pair of sides. The infant chair according to claim 1 or 2 , wherein a spacer member (47) for closing a space between the frame portion (9a) is provided on the support arm (30).

A pair of left and right holding cylinders (10) are provided on the chair body (1) side, and the pair of holding cylinders (10) are guarded so that the guard frame (9) can be attached to and detached from the chair body (1). The infant chair according to any one of claims 1 to 3, wherein rear end portions of the left and right side frame portions (9a) of the frame (9) are fitted and held so as to be detachable from the front side.

A lock mechanism (12) that locks the holding cylinder (10) and the guard frame (9) so that the side frame (9a) cannot be removed from the holding cylinder (10). The infant chair according to claim 4 , wherein the infant chair is provided between the side frame portion and the side frame portion.