JP2014065416A - Rock mechanism of handcart - Google Patents

Rock mechanism of handcart Download PDF

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JP2014065416A
JP2014065416A JP2012212672A JP2012212672A JP2014065416A JP 2014065416 A JP2014065416 A JP 2014065416A JP 2012212672 A JP2012212672 A JP 2012212672A JP 2012212672 A JP2012212672 A JP 2012212672A JP 2014065416 A JP2014065416 A JP 2014065416A
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engagement
lock mechanism
lever
frame member
locus
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JP5963630B2 (en
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hitoshi Yabuuchi
仁志 薮内
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Aprica Childrens Products Kk
Newell Brands Japan GK
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Aprica Childrens Products Kk
Aprica Childrens Products Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a rock mechanism excellent in operability.SOLUTION: A rock mechanism for a handcart is incorporated in a vehicle body frame of a handcart, and is provided with a first frame member (4) and a second frame member (1) which are selectively to be in a separating condition where the members separate from each other and an adjacent condition where they are adjacent to each other; a to-be-engaged part (42) mounted to the second frame member; and an engagement member (41) movably mounted to the first frame member (4) along a predetermined locus, engaged with the to-be-engaged part (42) at a first position on the locus in the adjacent condition to maintain the adjacent condition, and becoming a non-engaged condition with the to-be-engaged part (42) at a second position on the locus. The engagement member (41) is movable to a non-engageable position separating from the locus.

Description

本発明は、車体フレームを有する手押し車に関し、特に相対距離が変化可能な車体フレームの第1フレーム部材と第2フレーム部材に設けられて、第1フレーム部材および第2フレーム部材の近接状態を保持するロック機構に関する。   The present invention relates to a handcart having a body frame, and in particular, is provided on a first frame member and a second frame member of a body frame that can change relative distances, and maintains a close state of the first frame member and the second frame member. The present invention relates to a locking mechanism.

車体フレームの第1フレーム部材と第2フレーム部材に設けられて、第1フレーム部材および第2フレーム部材の近接状態を保持するロック機構としては従来、例えば実開昭59−172065号公報(特許文献1)に記載のごときものが知られている。特許文献1に記載の乳母車は、第1フレーム部材としての押し棒に係合レバーが設けられ、第2フレーム部材としてのスライダに係合部が設けられる。スライダが押し棒に沿って上方へスライドすると、スライダの係合部が原位置にされた係合レバーに自動的に係合する。   As a lock mechanism that is provided on the first frame member and the second frame member of the vehicle body frame and maintains the close state of the first frame member and the second frame member, for example, Japanese Utility Model Laid-Open No. 59-172065 (Patent Document) Those described in 1) are known. In the baby carriage described in Patent Document 1, an engagement lever is provided on a push rod as a first frame member, and an engagement portion is provided on a slider as a second frame member. When the slider slides upward along the push rod, the engaging portion of the slider automatically engages with the engaging lever that is set to the original position.

これら係合部と係合レバーの係合により、スライダは押し棒に沿って下方へスライドすることなく、乳母車を閉状態にロックする。   Due to the engagement between the engagement portion and the engagement lever, the slider locks the baby carriage in the closed state without sliding downward along the push rod.

ところで、特許文献1のロック機構は、係合レバーを一時的に原位置から離れた位置にして、係合レバーと係合部との係合を不能にする手段を備える。   Incidentally, the lock mechanism of Patent Document 1 includes means for disabling the engagement between the engagement lever and the engagement portion by temporarily moving the engagement lever away from the original position.

具体的に説明すると、係合レバーは押し棒の上端に固定されたブラケットを介して回動可能に支持されている。また係合レバーには、側方へわずかに突出する一対の突起が設けられている。そしてブラケットには、これらの突起を受け入れる一対の穴が設けられている。係合レバーを回動させて係合部とのロックを解除すると、スナップアクションにより、係合レバーの突起がブラケットの穴に嵌合し、係合レバーはその姿勢が維持される。これにより、その姿勢が維持される間、係合レバーが係合部と係合することはなく、ブラケットが係合レバーの近傍にあっても非係合状態を維持するというものである。   More specifically, the engagement lever is rotatably supported via a bracket fixed to the upper end of the push rod. The engaging lever is provided with a pair of protrusions that slightly protrude laterally. The bracket is provided with a pair of holes for receiving these protrusions. When the locking with the engaging portion is released by rotating the engaging lever, the protrusion of the engaging lever is fitted into the hole of the bracket by the snap action, and the posture of the engaging lever is maintained. Thus, while the posture is maintained, the engaging lever does not engage with the engaging portion, and the disengaged state is maintained even when the bracket is in the vicinity of the engaging lever.

特許文献1のロック機構は、上述した姿勢の維持を止めさせて係合レバーを原位置に復帰する手段をさらに備える。   The lock mechanism of Patent Literature 1 further includes means for stopping the above-described posture and returning the engagement lever to the original position.

具体的に説明すると、押し棒の上端には押し棒の軸線周りに回動する筒状部が設けられている。乳母車を開状態にすると筒状部が回動する。そして、筒状部に設けられたカムが係合レバーと当接して上述した突起と穴との嵌合を強制的に外すことにより、係合レバーを原位置に自動的に復帰させるというものである。   More specifically, a cylindrical portion that rotates around the axis of the push rod is provided at the upper end of the push rod. When the baby carriage is opened, the cylindrical portion rotates. Then, the cam provided on the cylindrical portion comes into contact with the engagement lever to forcibly remove the fitting between the projection and the hole, thereby automatically returning the engagement lever to the original position. is there.

実開昭59−172065号公報Japanese Utility Model Publication No.59-172065

上記従来のような乳母車にあっては、係合レバーを原位置に自動的に復帰させることができるが、本発明者はさらに改善すべき事項があることを見出した。つまり係合レバーを原位置に復帰させるためには、係合レバーとは別個の部品である筒状部を利用して、係合レバーの突起をブラケットの穴から外す動作が必要となっていた。このため、筒状部を有しない他の構成の乳母車に特許文献1の係合レバーおよび係合レバーを支持するブラケットを設ける場合、乳母車の操作者が手動で係合レバーを原位置に復帰させなければならなかった。   In the conventional baby carriage as described above, the engagement lever can be automatically returned to the original position, but the present inventor has found that there is a matter to be further improved. In other words, in order to return the engaging lever to the original position, it is necessary to remove the protrusion of the engaging lever from the hole of the bracket by using a cylindrical portion which is a separate part from the engaging lever. . For this reason, when providing the engaging lever and the bracket for supporting the engaging lever of Patent Document 1 in a baby carriage having another configuration that does not have a cylindrical portion, the operator of the baby carriage manually returns the engaging lever to the original position. I had to.

本発明は、上述の実情に鑑み、係合レバーの突起をブラケットの穴に嵌合させるのではなく、全く新規な構成に基づいた操作性に優れるロック機構を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a locking mechanism that is excellent in operability based on a completely new configuration, rather than fitting a protrusion of an engaging lever into a hole in a bracket.

この目的のため本発明による手押し車のロック機構は、手押し車の車体フレームに含まれ、互いに離隔した離隔状態と、互いに近接した近接状態に選択的にされる第1フレーム部材および第2フレーム部材と、第2フレーム部材に設けられる被係合部と、第1フレーム部材に、所定の軌跡に沿って動作可能に設けられて、近接状態のときに所定の軌跡上の第1位置で被係合部と係合して近接状態を保持し、所定の軌跡上の第2位置で被係合部と非係合になる係合部材とを備えることを前提とする。そして係合部材は所定の軌跡から離れた係合不能位置に動作可能であることを特徴とする。   For this purpose, the lock mechanism of the handcart according to the present invention is included in the body frame of the handcart, and is selectively provided in a separated state separated from each other and a close state close to each other. And an engaged portion provided in the second frame member, and provided in the first frame member so as to be operable along a predetermined trajectory, and engaged at a first position on the predetermined trajectory in the proximity state. It is presupposed that an engagement member is provided that engages with a joint portion to maintain a proximity state and is disengaged from an engaged portion at a second position on a predetermined locus. The engaging member can be moved to a non-engageable position away from a predetermined locus.

かかる本発明によれば、係合部材が所定の軌跡上の第1位置および第2位置にされるだけでなく、所定の軌跡から離れた係合不能位置に動作可能であることから、操作者が係合部材を係合不能位置にすれば、係合部材が被係合部に係合することを禁止することができる。したがって操作者は、所定の軌跡から離れるように係合部材を捻ることによりロック機構の非係合状態を維持して、その間に第1フレーム部材と第2フレーム部材との距離を容易に変化させることができる。   According to the present invention, since the engaging member is not only moved to the first position and the second position on the predetermined locus, but can be moved to the non-engageable position away from the predetermined locus. If the engaging member is brought into the non-engageable position, the engaging member can be prohibited from engaging the engaged portion. Accordingly, the operator maintains the non-engagement state of the lock mechanism by twisting the engagement member away from the predetermined locus, and easily changes the distance between the first frame member and the second frame member during that time. be able to.

特に本願発明は、操作者の片手が塞がっていても、残り片手での係合部材を操作することが可能であり、被係合状態を維持したまま残り片手で車体フレームを変更する次の操作に移行することが可能であり、手押し車の操作性能が向上する。   In particular, the present invention is capable of operating the engaging member with the remaining one hand even when the operator's one hand is blocked, and changing the vehicle body frame with the remaining one hand while maintaining the engaged state. Therefore, the operation performance of the wheelbarrow is improved.

なお、係合部材の第2位置とは、被係合部と係合し得ない位置にされていればよく、特に限定されない。また、係合部材の係合不能位置とは、所定の軌跡から離れた位置であればよく、特に限定されない。   The second position of the engaging member is not particularly limited as long as it is a position where it cannot engage with the engaged portion. Further, the position where the engagement member cannot be engaged is not particularly limited as long as it is a position away from a predetermined locus.

本発明の好ましい実施形態として、係合不能位置にされた係合部材を所定の軌跡に付勢する第1の付勢手段をさらに備える。かかる実施形態によれば、操作者が係合部材から手を放すと第1の付勢手段の作用により、係合部材は所定の軌跡に自動的に戻される。したがってロック機構の操作性が向上する。他の実施形態として、操作者が係合部材を手動で軌跡上に戻すものであってもよい。   As a preferred embodiment of the present invention, there is further provided a first urging means for urging the engaging member brought into the non-engageable position to a predetermined locus. According to this embodiment, when the operator releases his / her hand from the engaging member, the engaging member is automatically returned to the predetermined locus by the action of the first biasing means. Therefore, the operability of the lock mechanism is improved. As another embodiment, the operator may manually return the engaging member to the locus.

本発明の好ましい実施形態として、第2位置にされた係合部材を第1位置に付勢する第2の付勢手段をさらに備える。かかる実施形態によれば、操作者が係合部材から手を放すと第2の付勢手段の作用により、係合部材は第1位置に自動復帰する。したがってロック機構の操作性が向上する。他の実施形態として、操作者が係合部材を手動で第1位置に復帰させるものであってもよい。   As a preferred embodiment of the present invention, a second urging means for urging the engaging member brought to the second position to the first position is further provided. According to this embodiment, when the operator releases the hand from the engaging member, the engaging member is automatically returned to the first position by the action of the second urging means. Therefore, the operability of the lock mechanism is improved. As another embodiment, the operator may manually return the engaging member to the first position.

本発明のより好ましい実施形態として、第1の付勢手段の付勢力は、第2の付勢手段の付勢力よりも相対的に小さい。かかる実施形態によれば、係合不能位置にされた係合部材が所定の軌跡に戻ることを相対的に遅らせることができるから、非係合状態の維持を好適に実現することができる。   As a more preferred embodiment of the present invention, the urging force of the first urging means is relatively smaller than the urging force of the second urging means. According to such an embodiment, it is possible to relatively delay the return of the engaging member brought into the non-engageable position to the predetermined trajectory, so that it is possible to suitably maintain the non-engaged state.

本発明の一実施形態として、係合部材は、基端を第1フレーム部材側に回動可能に設けられて、遊端が所定の軌跡に沿って回動することにより被係合部に係合可能な係合レバーを含む。かかる実施形態によれば、レバーを被係合部に係合させる操作およびこれらの係合を解除する操作が容易となる。他の実施形態として、係合部材は第1フレーム部材側に対して摺動可能に設けられた係合ブロックであってもよい。第1位置および第2位置を含む軌跡は、係合レバーによる円弧曲線であってもよいし、係合ブロックによる直線であってもよい。   As one embodiment of the present invention, the engaging member is provided so that the base end is pivotable toward the first frame member, and the free end is pivoted along a predetermined trajectory to engage with the engaged portion. A mating engagement lever is included. According to this embodiment, the operation for engaging the lever with the engaged portion and the operation for releasing the engagement are facilitated. As another embodiment, the engagement member may be an engagement block provided to be slidable with respect to the first frame member side. The trajectory including the first position and the second position may be a circular arc curve by the engagement lever or a straight line by the engagement block.

本発明の好ましい実施形態として、係合部材は、第1フレーム部材側に設けられて、係合レバーの基端を所定の軌跡と交差する方向に移動可能に支持するレバー支持部材をさらに含む。かかる実施形態によれば、係合レバーを所定の軌跡から離れた係合不能位置にする操作を好適に実現することができる。レバー支持部材は例えばヒンジであったり、軸であったり、相手材を摺動可能に支持するガイドレールであったり、相手材を二次元方向に移動可能に支持する球状継手であってもよい。   As a preferred embodiment of the present invention, the engagement member further includes a lever support member that is provided on the first frame member side and supports the base end of the engagement lever so as to be movable in a direction crossing a predetermined locus. According to such an embodiment, it is possible to suitably realize an operation for moving the engaging lever to the non-engageable position away from the predetermined locus. The lever support member may be, for example, a hinge, a shaft, a guide rail that supports the mating member in a slidable manner, or a spherical joint that supports the mating material in a two-dimensional direction.

本発明の好ましい実施形態として、レバー支持部材は、第1フレーム部材に対して、係合レバーの基端を所定の軌跡と交差する方向に回動可能に支持する。かかる実施形態によれば、係合レバーを係合レバー自身の回動ピボットとは別の回動方向に、すなわち所定の軌跡から離れるよう、捻ればよく、係合不能位置にする操作が容易となる。   As a preferred embodiment of the present invention, the lever support member supports the first frame member so that the base end of the engagement lever can rotate in a direction crossing a predetermined locus. According to such an embodiment, the engagement lever can be twisted in a rotation direction different from the rotation pivot of the engagement lever itself, i.e., away from the predetermined locus, and the operation to make the engagement impossible position easy. Become.

本発明の一実施形態として、車体フレームは展開状態および折り畳み状態に選択的に変更可能に構成され、第1および第2フレーム部材の離隔位置は展開状態に対応し、第1および第2フレーム部材の近接位置は折り畳み状態に対応する。本発明の好ましい実施形態として、第1フレーム部材および第2フレーム部材は、互いに回動可能に連結された前脚および後脚である。かかる実施形態によれば、手押し車を折り畳み状態に維持することができ、しかも折り畳まれた手押し車を展開する際、ロック機構を容易に解除することが可能となり、手押し車の展開操作が向上する。他の実施形態として、押し棒が対面押し位置および背面押し位置のいずれかに切り替え可能な手押し車に、本発明のロック機構を設け、押し棒を対面押し位置にロックする構成や、あるいは押し棒を背面押し位置にロックする構成であってもよい。   As one embodiment of the present invention, the vehicle body frame is configured to be selectively changeable between an expanded state and a folded state, and the separation positions of the first and second frame members correspond to the expanded state, and the first and second frame members The close position corresponds to the folded state. As a preferred embodiment of the present invention, the first frame member and the second frame member are a front leg and a rear leg that are rotatably connected to each other. According to this embodiment, the wheelbarrow can be maintained in the folded state, and when the folded wheelbarrow is deployed, the lock mechanism can be easily released, and the deployment operation of the wheelbarrow is improved. . As another embodiment, a structure in which the push bar is provided with the lock mechanism of the present invention in a handcart that can be switched to either a face-to-face push position or a back-face push position, and the push bar is locked to the face-to-face push position, or push bar May be configured to be locked at the back pushing position.

このように本発明は、操作者による簡易な操作によって、係合部材が被係合部に係合することを不可能にする状態を維持することができる。したがって操作者の一方の片手が塞がっており、他方の片手しか空いていない場合、片手でロック機構を解除し、非係合状態の下、次の操作で第1フレーム部材と第2フレーム部材を互いに離隔させることが可能となり、手押し車の軌跡操作性が向上する。   Thus, this invention can maintain the state which makes it impossible for an engaging member to engage with a to-be-engaged part by simple operation by an operator. Therefore, when one hand of the operator is closed and only the other hand is free, the locking mechanism is released with one hand, and the first frame member and the second frame member are moved by the next operation under the disengaged state. It becomes possible to separate them from each other, and the trajectory operability of the handcart is improved.

本発明の一実施形態のロック機構を備える乳母車の車体フレームを示す側面図である。It is a side view which shows the vehicle body frame of the baby carriage provided with the locking mechanism of one Embodiment of this invention. 図1の車体フレームの折り畳み状態を示す側面図である。It is a side view which shows the folding state of the vehicle body frame of FIG. 同実施形態に設けられるロック機構を拡大した図であり、係合状態を示す。It is the figure which expanded the lock mechanism provided in the embodiment, and shows an engagement state. 係合状態のロック機構を図3のIV−IVで断面とし矢印方向からみた図である。It is the figure which made the locking mechanism of an engagement state into the cross section by IV-IV of FIG. 3, and was seen from the arrow direction. 非係合状態のロック機構を示す図である。It is a figure which shows the lock mechanism of a non-engagement state. 係合不能位置にされた係合レバーを示す図である。It is a figure which shows the engagement lever made into the engagement impossible position. 図6に対応する係合レバーを示し、図6のVII−VIIで断面とし矢印方向からみた図である。FIG. 7 shows an engagement lever corresponding to FIG. 6, and is a cross-sectional view taken along the line VII-VII in FIG. 車体フレームが折り畳まれる途中状態におけるロック機構を示す図である。It is a figure which shows the locking mechanism in the middle state in which a vehicle body frame is folded. 図8に対応する係合レバーを示し、図8のIX−IXで断面とし矢印方向からみた図である。FIG. 9 shows the engagement lever corresponding to FIG. 8, and is a cross-sectional view taken along the line IX-IX in FIG.

以下、本発明の実施の形態を、図面に基づき詳細に説明する。図1は手押し車の一例としての折り畳み式乳母車の車体フレームを示す側面図である。図2は、図1の車体フレームの折り畳み状態を示す側面図である。図示の乳母車は、本発明の一実施形態のロック機構を備える。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a body frame of a folding baby carriage as an example of a handcart. FIG. 2 is a side view showing a folded state of the vehicle body frame of FIG. The illustrated baby carriage includes the lock mechanism according to the embodiment of the present invention.

乳母車は、高さ方向および幅方向のサイズが縮小して折り畳まれるものである。乳母車は、車体フレームの主要構成要素として、一対の前脚1と、一対の後脚4と、一対の押し棒5と、一対のハンドル部材6と、一対の座部支持棒10と、背面クロス部材8と、底面クロス部材9を有する。これら一対をなす各フレーム部材は乳母車の幅方向一方側および幅方向他方側に配置されて幅方向間隔を縮小可能であり、両者の間隔を縮小することにより乳母車は折り畳み状態にされる。これに対し両者の間隔を拡大した状態で維持することにより乳母車は展開状態に維持される。   The baby carriage is folded by reducing the size in the height direction and the width direction. The baby carriage includes a pair of front legs 1, a pair of rear legs 4, a pair of push rods 5, a pair of handle members 6, a pair of seat support rods 10, and a back cross member as main components of the body frame. 8 and a bottom cross member 9. The pair of frame members are arranged on one side in the width direction and the other side in the width direction of the baby carriage so that the width direction interval can be reduced. By reducing the distance between the two, the baby carriage is folded. On the other hand, the baby carriage is maintained in the unfolded state by maintaining the distance between the two expanded.

各前脚1は、上下方向に延びており、その下端部に前輪11を有し、その上端部に連結部材2を有している。各前輪11はキャスタ11cを介して前脚1の下端に取り付けられている。展開状態において各キャスタ11cは平坦な地面Gに垂直な回動軸を中心として回動自在にされ、これにより各前輪11の舵角を変更することができる。連結部材2は、前脚1に固定されており、その前方部に筒状体2aを有し、その後方部に張出し部2bを有している。各前脚1の中間領域には、案内スリーブ3が固定して取り付けられている。この案内スリーブ3は、その前方部に筒状体3aを有している。   Each front leg 1 extends in the vertical direction, has a front wheel 11 at its lower end, and has a connecting member 2 at its upper end. Each front wheel 11 is attached to the lower end of the front leg 1 via a caster 11c. In the unfolded state, each caster 11c is pivotable about a pivot axis perpendicular to the flat ground G, whereby the steering angle of each front wheel 11 can be changed. The connecting member 2 is fixed to the front leg 1, and has a cylindrical body 2a at the front part thereof and an overhang part 2b at the rear part thereof. A guide sleeve 3 is fixedly attached to an intermediate region of each front leg 1. The guide sleeve 3 has a cylindrical body 3a at the front portion thereof.

各後脚4は、上下方向に延びており、その下端部に後輪14を有している。各後脚4の上端部は、前脚1に固定された連結部材2の張出し部2bに回動可能に連結されている。乳母車の折り畳み動作に伴って各後脚4は張出し部2bを中心として各前脚1に近づく方向に回動し、図2に示す折り畳み状態においては、各後脚4と各前脚1とは平行な関係で位置し、後輪14は前輪11の上方に位置する。   Each rear leg 4 extends in the vertical direction, and has a rear wheel 14 at the lower end thereof. The upper end portion of each rear leg 4 is rotatably connected to an overhanging portion 2b of a connecting member 2 fixed to the front leg 1. With the folding operation of the baby carriage, each rear leg 4 rotates in the direction approaching each front leg 1 about the overhang portion 2b. In the folded state shown in FIG. 2, each rear leg 4 and each front leg 1 are parallel to each other. The rear wheel 14 is positioned above the front wheel 11.

各押し棒5は、展開状態においてその下方領域が各前脚1上に重なるように配置されて上下方向に延びている。この押し棒5は、前脚1に固定された連結部材2および案内スリーブ3の筒状体2a,3aにスライド可能に保持されている。乳母車の折り畳み動作に伴って各押し棒5は各前脚1上を下方に向かってスライド移動し、図2に示す折り畳み状態においては、各押し棒5の下方端が地面Gに当接するようになる。地面Gに接する押し棒5の下方端と前輪11とによって、折り畳み状態の乳母車は自立することが可能である。このように押し棒5は、図1に示す展開状態で相対的に上方の位置にされ、図2に示す折り畳み状態で相対的に下方の位置に選択的にされる。   Each push bar 5 is arranged so that its lower region overlaps with each front leg 1 in the unfolded state, and extends in the vertical direction. The push bar 5 is slidably held by the connecting member 2 fixed to the front leg 1 and the cylindrical bodies 2 a and 3 a of the guide sleeve 3. Each push bar 5 slides downward on each front leg 1 in accordance with the folding operation of the baby carriage, and the lower end of each push bar 5 comes into contact with the ground G in the folded state shown in FIG. . The folded baby carriage can stand on its own by the lower end of the push rod 5 in contact with the ground G and the front wheel 11. Thus, the push bar 5 is set to a relatively upper position in the unfolded state shown in FIG. 1, and is selectively set to a relatively lower position in the folded state shown in FIG.

各押し棒5の上端には各ハンドル部材6が延設されている。乳母車の操作者は両手で一対のハンドル部材6を握り、乳母車を前進させることができる。   Each handle member 6 extends from the upper end of each push bar 5. An operator of the baby carriage can move the baby carriage forward by holding the pair of handle members 6 with both hands.

一対の後脚4の上方領域上には、一対のスライド部材7がスライド可能に配置されている。乳母車の折り畳み動作に伴って各スライド部材7は各後脚4上を上方に向かってスライド移動する。   A pair of slide members 7 are slidably disposed on the upper region of the pair of rear legs 4. As the baby carriage is folded, the slide members 7 slide upward on the rear legs 4.

背面クロス部材8は、互いに重なるように配置されてX字状に交差する第1棒部材と第2棒部材とを含み、その上端部が一対のスライド部材7に回動可能に連結され、その下端部が一対の後脚4の下方領域に回動可能に連結されている。第1棒部材と第2棒部材とは、それらの交差部において回動可能に互いに連結されている。乳母車の展開状態においては、背面クロス部材8の上下端の距離が相対的に短くなり、一対の後脚4の間隔が相対的に広がっている。乳母車の折り畳み状態においては、背面クロス部材8の上下端の距離が相対的に長くなり、一対の後脚4の間隔が相対的に狭まっている。   The back cross member 8 includes a first bar member and a second bar member that are arranged so as to overlap each other and intersect in an X shape, and their upper ends are rotatably connected to the pair of slide members 7, A lower end portion is rotatably connected to a lower region of the pair of rear legs 4. The 1st bar member and the 2nd bar member are mutually connected so that rotation is possible in those crossing parts. In the deployed state of the baby carriage, the distance between the upper and lower ends of the back cross member 8 is relatively short, and the distance between the pair of rear legs 4 is relatively wide. In the folded state of the baby carriage, the distance between the upper and lower ends of the back cross member 8 is relatively long, and the distance between the pair of rear legs 4 is relatively narrow.

底面クロス部材9は、X字状に交差する第1の棒部材と第2の棒部材とを含み、その前端部が一対の押し棒5の下端部に回動可能に連結され、その後端部が一対の後脚4の中間領域に回動可能に連結されている。乳母車の折り畳み動作に伴って一対の押し棒5が前脚1に沿って下方へ移動すると、押し棒5の下端部に連結された底面クロス部材9の前端部もそれに追従して下方へ移動し、それに伴い、底面クロス部材9の後端部に連結された一対の後脚4を前脚1に向かって回動させる。また、押し棒5の下端部の下方への移動量が大きくなるのにつれて、底面クロス部材9の前端部と後端部との間の距離が長くなるので、一対の前脚1間の間隔および一対の後脚4間の間隔が狭まる。   The bottom cross member 9 includes a first bar member and a second bar member that intersect in an X shape, and a front end portion of the bottom cross member 9 is rotatably connected to a lower end portion of the pair of push rods 5. Is connected to an intermediate region of the pair of rear legs 4 so as to be rotatable. When the pair of push rods 5 moves downward along the front leg 1 in accordance with the folding operation of the baby carriage, the front end portion of the bottom cross member 9 connected to the lower end portion of the push rod 5 also moves downward following it, Accordingly, the pair of rear legs 4 connected to the rear end portion of the bottom cross member 9 is rotated toward the front legs 1. Further, as the amount of downward movement of the lower end portion of the push rod 5 increases, the distance between the front end portion and the rear end portion of the bottom cross member 9 becomes longer. The space between the rear legs 4 is reduced.

一対の座部支持棒10は、幼児用座席を構成する布製の座席ハンモック23の座部を支持するように前後方向に延びる前後方向部材であって、その前方領域または中間領域が一対の前脚1の中央部に回動可能に連結され、その後端部が一対のスライド部材7に回動可能に連結されている。乳母車の折り畳み動作に伴ってスライド部材7が後脚4上を上方に向かって移動すると、座部支持棒10は図1において反時計方向に回動し、乳母車の折り畳み状態では、前脚1の内側に沿って位置するようになる。   The pair of seat support rods 10 are longitudinal members extending in the front-rear direction so as to support the seat portion of the cloth seat hammock 23 constituting the infant seat, and the front region or the middle region thereof is a pair of front legs 1. The rear end portion is rotatably connected to the pair of slide members 7. When the slide member 7 moves upward on the rear leg 4 in accordance with the folding operation of the baby carriage, the seat support bar 10 rotates counterclockwise in FIG. 1, and the inner side of the front leg 1 in the folded state of the baby carriage. It will be located along.

背面クロス部材8には、第1および第2棒部材の間隔を固定することによって乳母車の展開状態を維持する展開状態ロック機構30が設けられている。   The back cross member 8 is provided with an unfolded state locking mechanism 30 that maintains the unfolded state of the baby carriage by fixing the distance between the first and second bar members.

一方の前脚1および一方の後脚4には、図2に示すように折り畳み状態において互いに近接するこれら前脚1および後脚4の近接状態を保持することによって乳母車の折り畳み状態を維持する折り畳み状態ロック機構40が設けられている。   As shown in FIG. 2, one front leg 1 and one rear leg 4 have a folded state lock that maintains the folded state of the baby carriage by maintaining the close state of the front leg 1 and the rear leg 4 that are close to each other in the folded state. A mechanism 40 is provided.

折り畳み状態ロック機構40は、主要構成部品として係合部材になる係合レバー41と、被係合部42とを含む。係合レバー41は後脚4の車幅方向外側面に回動可能に設けられ、被係合部42は前脚1の車幅方向外側面に取付固定される。   The folded state lock mechanism 40 includes an engaging lever 41 that is an engaging member as a main component and an engaged portion 42. The engagement lever 41 is rotatably provided on the outer side surface of the rear leg 4 in the vehicle width direction, and the engaged portion 42 is attached and fixed to the outer side surface of the front leg 1 in the vehicle width direction.

図3〜図8はこのロック機構40を拡大して示す図である。図3は図2に表れるロック機構を拡大した図であり、係合状態を示す。図4は、係合状態のロック機構を図3のIV−IVで断面とし矢印方向からみた図である。図5は、非係合状態のロック機構を示す図である。図8は、非係合状態のロック機構を示す図であり、車体フレームが折り畳まれる途中状態および展開状態に対応する。図9は、図8に対応する係合レバーを示し、図8のIX−IXで断面とし矢印方向からみ図である。また後述する図6は係合不能位置にされた係合レバーを示す図であり、後述する図7は図6のVII−VII方向からみた図である。図3〜図7は、前脚と後脚が近接した状態である折り畳み状態に関する。   3 to 8 are enlarged views of the lock mechanism 40. FIG. FIG. 3 is an enlarged view of the lock mechanism shown in FIG. 2 and shows an engaged state. 4 is a cross-sectional view of the lock mechanism in the engaged state taken along line IV-IV in FIG. FIG. 5 is a diagram illustrating the lock mechanism in a non-engaged state. FIG. 8 is a diagram illustrating the lock mechanism in a non-engaged state, and corresponds to a state where the vehicle body frame is being folded and a deployed state. FIG. 9 shows an engagement lever corresponding to FIG. 8, and is a cross-sectional view taken along the line IX-IX in FIG. FIG. 6 to be described later is a view showing the engaging lever in the non-engageable position, and FIG. 7 to be described later is a view seen from the VII-VII direction of FIG. 3 to 7 relate to a folded state in which the front legs and the rear legs are close to each other.

後脚4には筒状のブラケット43が取付固定される。ブラケット43には車幅方向に延びる軸44を介して、レバー支持部材45が軸44周りに回動可能に設けられている。レバー支持部材45は、互いに対向するように対設された一対の壁部451を有し、一対の壁部451間に係合レバー41の基端を受け入れる。そして一対の壁部451間に架設されるピボット45pに、係合レバー41の基端が連結され、係合レバー41はピボット45p周りに回動可能にされる。ピボット45pは後脚4と平行に延びる。これに対し係合レバー41は前脚1に向かって後脚4と直角に延びる。つまり係合レバー41は乳母車の前後方向を長手方向として延び、後方を基端とし、前方を遊端とする。   A cylindrical bracket 43 is attached and fixed to the rear leg 4. The bracket 43 is provided with a lever support member 45 so as to be rotatable around the shaft 44 through a shaft 44 extending in the vehicle width direction. The lever support member 45 has a pair of wall portions 451 arranged to face each other, and receives the base end of the engagement lever 41 between the pair of wall portions 451. And the base end of the engagement lever 41 is connected to the pivot 45p constructed between the pair of wall portions 451, and the engagement lever 41 is rotatable around the pivot 45p. The pivot 45 p extends in parallel with the rear leg 4. On the other hand, the engaging lever 41 extends at a right angle to the rear leg 4 toward the front leg 1. That is, the engagement lever 41 extends in the longitudinal direction of the baby carriage, and has the rear as a base end and the front as a free end.

係合レバー41は一対の側壁部411およびこれら一対の側壁を連結する中央壁部412を有する断面U字形状であり、各側壁部411がレバー支持部材45の各壁部451と面接触し、中央壁部412が車幅方向外側に配置される。一対の側壁部411および中央壁部412は車幅方向内側に向かって開口する空間46を画成し、この空間46に被係合部42を受け入れる。これにより係合レバー41は被係合部42と係合する。また、この空間46には係合レバー41の長手方向と直角に広がる平面状に形成された内壁部413が内設されている。内壁部413は、空間内の被係合部42よりも遊端側に位置することから、係合状態において被係合部42が内壁部413を乗り越えて係合レバー41の遊端側へ抜け出すことはない。   The engaging lever 41 has a U-shaped cross section having a pair of side wall portions 411 and a central wall portion 412 that connects the pair of side walls, and each side wall portion 411 is in surface contact with each wall portion 451 of the lever support member 45, The central wall portion 412 is disposed on the outer side in the vehicle width direction. The pair of side wall portions 411 and the central wall portion 412 define a space 46 that opens toward the inner side in the vehicle width direction, and the engaged portion 42 is received in this space 46. Thereby, the engaging lever 41 is engaged with the engaged portion 42. The space 46 is provided with an inner wall portion 413 formed in a planar shape extending at right angles to the longitudinal direction of the engagement lever 41. Since the inner wall portion 413 is positioned closer to the free end side than the engaged portion 42 in the space, the engaged portion 42 gets over the inner wall portion 413 in the engaged state and comes out to the free end side of the engagement lever 41. There is nothing.

また係合レバー41の遊端には、一対の側壁部411および中央壁部412と接続して空間46の端部を塞ぐ端面壁414が形成される。この端面壁414は車幅方向内側縁に角部414cを有する。さらにこの端面は中央壁部412を越えて車幅方向外側へ突出し、つまみ部415を形成する。   In addition, an end face wall 414 that is connected to the pair of side wall portions 411 and the central wall portion 412 to block the end portion of the space 46 is formed at the free end of the engagement lever 41. The end face wall 414 has a corner 414c at the inner edge in the vehicle width direction. Further, this end surface protrudes outward in the vehicle width direction beyond the central wall portion 412 to form a knob portion 415.

図3〜図5および図8を参照して、ロック機構40の基本動作について説明する。   The basic operation of the locking mechanism 40 will be described with reference to FIGS.

図2〜図4に示す乳母車の折り畳み状態において、前脚1および後脚4は互いに接近する近接状態にされており、係合レバー41は被係合部42の近傍に位置する。   In the folded state of the baby carriage shown in FIGS. 2 to 4, the front leg 1 and the rear leg 4 are in close proximity to each other, and the engagement lever 41 is located in the vicinity of the engaged portion 42.

被係合部42は、根元側が前脚1に固定され、先端側が前脚1から車幅方向外側に突出しており、被係合部42の根元と先端との間には係合レバー41の遊端と当接する傾斜面421が形成される。乳母車を折り畳む際、折り畳み途中状態(図8)を参照して、後脚4に設けられた係合レバー41は前脚1に設けられた被係合部42に接近する。そして最初に、係合レバー41の遊端の角部414cが傾斜面421と当接し、角部414cは傾斜面421に沿って摺動して被係合部42の先端422を乗り越える。   The engaged portion 42 has a base side fixed to the front leg 1, and a distal end side projecting outward from the front leg 1 in the vehicle width direction, and the free end of the engaging lever 41 is between the root and the distal end of the engaged portion 42. An inclined surface 421 that comes into contact with is formed. When the baby carriage is folded, the engaging lever 41 provided on the rear leg 4 approaches the engaged portion 42 provided on the front leg 1 with reference to the folding state (FIG. 8). First, the corner 414c of the free end of the engagement lever 41 contacts the inclined surface 421, and the corner 414c slides along the inclined surface 421 and gets over the tip 422 of the engaged portion 42.

次に係合レバー41の遊端側に設けられた内壁部413も傾斜面421と当接し、傾斜面421に沿って摺動して被係合部42の先端422を乗り越える。これにより係合レバー41は後脚4および軸44の双方に対して直角に延びる第1位置で、空間46に被係合部42を受け入れて被係合部42と係合し、係合状態が実現する(図4)。   Next, the inner wall portion 413 provided on the free end side of the engaging lever 41 also comes into contact with the inclined surface 421 and slides along the inclined surface 421 to get over the tip 422 of the engaged portion 42. As a result, the engaging lever 41 receives the engaged portion 42 in the space 46 and engages with the engaged portion 42 at the first position extending at right angles to both the rear leg 4 and the shaft 44, and is in the engaged state. Is realized (FIG. 4).

係合状態を解除する場合、図4に示す係合レバー41遊端のつまみ部415を片手で掴み、図5に太い矢印で示すように、係合レバー41をピボット45p周りに車幅方向外側に回動させるとよい。これにより係合レバー41は後脚4に対して直角に延び軸44に対して斜めに延びる第2位置にされて、被係合部42は空間46から抜け出し、係合レバー41と被係合部42との係合状態が解除される(図5)。なお、ピボット45p近傍には付勢手段としてのばね48が設けられる。ばね48は、ピボット45pからみて係合レバー41の遊端とは反対側で軸44に沿うよう配置されて、係合レバー41とレバー支持部材45間に押し縮められるように介在し、ピボット45p周りの付勢力を係合レバー41に付与し、係合レバー41を第1位置(図4)に付勢する。なお第1位置とは、係合・非係合にかかわらず係合レバー41が図4に示すように軸44に対して直角に延び、かつ図3に示すように後脚4に対して直角に延びている姿勢をいう。   When releasing the engagement state, the grip portion 415 of the free end of the engagement lever 41 shown in FIG. 4 is grasped with one hand, and the engagement lever 41 is moved outwardly in the vehicle width direction around the pivot 45p as shown by a thick arrow in FIG. It is good to rotate it. As a result, the engaging lever 41 is moved to a second position extending at a right angle to the rear leg 4 and extending obliquely with respect to the shaft 44, and the engaged portion 42 comes out of the space 46 and is engaged with the engaging lever 41. The engaged state with the part 42 is released (FIG. 5). A spring 48 is provided as a biasing means in the vicinity of the pivot 45p. The spring 48 is disposed along the shaft 44 on the side opposite to the free end of the engagement lever 41 when viewed from the pivot 45p, and is interposed between the engagement lever 41 and the lever support member 45 so as to be compressed. The surrounding urging force is applied to the engagement lever 41, and the engagement lever 41 is urged to the first position (FIG. 4). The first position means that the engagement lever 41 extends at a right angle to the shaft 44 as shown in FIG. 4 regardless of engagement / non-engagement, and is perpendicular to the rear leg 4 as shown in FIG. The posture that extends.

これまで説明してきたように、係合レバー41は図4の左側に円弧状の矢印Aで示すようにピボット45p周りに回動する軌跡を描き、ピボット45pおよび軸44の双方に対して直角に延びている第1位置と、軸44に対して斜め方向に交差する第2位置に選択的にされる。   As described so far, the engaging lever 41 draws a trajectory rotating around the pivot 45p as shown by the arc-shaped arrow A on the left side of FIG. 4 and is perpendicular to both the pivot 45p and the shaft 44. A first position that extends and a second position that intersects the axis 44 in an oblique direction are selectively used.

ここで付言すると、係合レバー41の基端には、レバー支持部材45と軸44方向の隙間を介して対面する当接面416が形成されている。係合レバー41を第1位置からピボット45p周りに所定角度まで回動させると、図5に示すように当接面416が当該隙間を詰めてレバー支持部材45と当接し、更なる回動を規制する。これにより係合レバー41は第1位置から第2位置を越えて過度に回動することなく、適切な距離を伴って被係合部42から離れることができる。   In other words, a contact surface 416 that faces the lever support member 45 via a gap in the direction of the shaft 44 is formed at the base end of the engagement lever 41. When the engagement lever 41 is rotated from the first position around the pivot 45p to a predetermined angle, as shown in FIG. 5, the contact surface 416 closes the gap and contacts the lever support member 45, and further rotation is performed. regulate. As a result, the engagement lever 41 can be separated from the engaged portion 42 with an appropriate distance without excessively rotating from the first position beyond the second position.

次に図6、図7をさらに参照しつつ、ロック機構40の係合レバーを係合不能位置にする操作について説明する。   Next, an operation for setting the engagement lever of the lock mechanism 40 to the disengageable position will be described with further reference to FIGS.

折り畳み状態の乳母車を展開状態にするよう展開操作するとき、乳母車の操作者はまずロック機構40の係合を解除して、次にハンドル部6を上方へ引き上げて、前脚1と後脚4との間を広げなければならない。   When performing the unfolding operation so that the folded baby carriage is in the unfolded state, the operator of the baby carriage first releases the engagement of the lock mechanism 40, and then raises the handle portion 6 upward so that the front leg 1, the rear leg 4, You have to widen the gap.

折り畳み状態において係合レバー41が図5に示すように第2位置にされる場合、乳母車の操作者が図5に太い矢印で示す方向の力を付与し続けなければ、ピボット45p周りの付勢力を与えるばね48の作用により係合レバー41が第1位置に戻ってしまい、再係合してしまう。これでは前脚1と後脚4との間を広げることができない。   When the engaging lever 41 is in the second position as shown in FIG. 5 in the folded state, the urging force around the pivot 45p is not provided unless the baby carriage operator continues to apply a force in the direction indicated by the thick arrow in FIG. The engagement lever 41 returns to the first position due to the action of the spring 48 for giving the re-engagement. With this, the space between the front leg 1 and the rear leg 4 cannot be widened.

そこで操作者は、第2位置にされた係合レバー41を軸44周りに捻り、図6に示す係合不能位置にした後、片手を係合レバー41から離すと良い。折り畳み状態において係合レバー41は、図7に示すようにピボット45p周りのばね48によって前脚1に接近するよう付勢されるが、係合レバー41は既に第1位置および第2位置を含む軌跡から離れているため、操作者が係合レバー41から片手を離しても図6に示すように係合レバー41が被係合部42に再び係合することはない。   Therefore, the operator may twist the engaging lever 41 in the second position around the shaft 44 to the disengageable position shown in FIG. In the folded state, the engagement lever 41 is biased to approach the front leg 1 by a spring 48 around the pivot 45p as shown in FIG. 7, but the engagement lever 41 already has a locus including the first position and the second position. Therefore, even if the operator releases one hand from the engagement lever 41, the engagement lever 41 does not re-engage with the engaged portion 42 as shown in FIG.

本実施形態によれば、係合レバー41を図6の円弧状の矢印Bのように軸44周りに捻ることによって、ピボット45p自身も回動変位し、係合レバー41は図4左側に円弧上矢印Aで示す軌跡から離れた係合不能位置にされる。   According to this embodiment, when the engaging lever 41 is twisted around the shaft 44 as shown by the arc-shaped arrow B in FIG. 6, the pivot 45p itself is also rotationally displaced, and the engaging lever 41 is formed in a circular arc on the left side in FIG. The disengageable position is away from the locus indicated by the up arrow A.

したがって本実施形態によれば、係合レバー41を一旦係合不能位置にすれば、前脚1および後脚4が近接する近接状態であっても図6および図7に示すように係合レバー41から片手を離しても再係合することがなく、操作者は乳母車を展開する操作に専念することができる。   Therefore, according to the present embodiment, once the engagement lever 41 is brought into the non-engageable position, even when the front leg 1 and the rear leg 4 are close to each other, as shown in FIGS. Even if one hand is taken off, it does not re-engage, and the operator can concentrate on the operation of unfolding the baby carriage.

ここで付言すると、軸44周りには、レバー支持部材45を所定の周方向に付勢する付勢手段(例えばばね)47が設けられると良い。ばね47は、ブラケット43に形成された孔に内設され、係合レバー41が後脚4に対して直角になる周方向位置に、レバー支持部材45を付勢する。このため、前脚1および後脚4が互いに近接する折り畳み状態において、第1位置および第2位置を含む軌跡から離れるように捻られた係合レバー41は、図6に示すように被係合部42のうち先端422と根元(前脚1側)の間の中央部に横方向から当接する。   In other words, a biasing means (for example, a spring) 47 that biases the lever support member 45 in a predetermined circumferential direction is preferably provided around the shaft 44. The spring 47 is provided in a hole formed in the bracket 43, and biases the lever support member 45 at a circumferential position where the engagement lever 41 is perpendicular to the rear leg 4. Therefore, in the folded state in which the front leg 1 and the rear leg 4 are close to each other, the engaging lever 41 twisted away from the locus including the first position and the second position is shown in FIG. 42 abuts from the lateral direction at the center between the tip 422 and the root (front leg 1 side).

軸44周りに設けられた第1の付勢手段(例えば相対的に細いばね47)による付勢力は、ピボット45p周りに設けられた第2の付勢手段(例えば相対的に太いばね48)による付勢力よりも小さい。このため、ピボット45p周りに設けられた第2の付勢手段の方が相対的に勝り、第2位置からさらに捻られた係合レバー41は、先に前脚1に近接し、次に横方向から被係合部42の中央部と当接するのである。   The biasing force by the first biasing means (for example, the relatively thin spring 47) provided around the shaft 44 is caused by the second biasing means (for example, the relatively thick spring 48) provided around the pivot 45p. Smaller than the biasing force. For this reason, the second urging means provided around the pivot 45p is relatively superior, and the engaging lever 41 further twisted from the second position first approaches the front leg 1 and then laterally. From the center of the engaged portion 42.

操作者が乳母車の展開操作の際に前脚1と後脚4とを互いに離隔させると、ピボット45p周りのばね48および軸44周りのばね47によって、係合レバー41は第1位置に自動復帰する(図1、図8、および図9)。   When the operator separates the front leg 1 and the rear leg 4 from each other during the operation of deploying the baby carriage, the engagement lever 41 is automatically returned to the first position by the spring 48 around the pivot 45p and the spring 47 around the shaft 44. (FIGS. 1, 8, and 9).

以上、図面を参照してこの発明の実施の形態を説明したが、この発明は、図示した実施の形態のものに限定されない。ロック機構40は、上述した前脚1および後脚4間の他、互いに離隔した離隔状態と、互いに近接した近接状態に選択的にされる第1フレーム部材および第2フレーム部材に取り付け可能である。被係合部42と係合する部材は、上述した係合レバー41の他、後脚4にスライド移動可能に設けられた係合ブロックであってもよい。レバー支持部材45は、上述した軸44周りに回動可能である他、後脚4にスライド移動可能に設けられてもよい。そして図示した実施の形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。   Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. The locking mechanism 40 can be attached to the first frame member and the second frame member that are selectively set apart from each other between the front leg 1 and the rear leg 4 as well as in a separated state and a close state. The member engaged with the engaged portion 42 may be an engagement block provided on the rear leg 4 so as to be slidable in addition to the engagement lever 41 described above. The lever support member 45 may be provided so as to be slidable on the rear leg 4 in addition to being rotatable around the axis 44 described above. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

この発明になる手押し車のロック機構は、人、動物、または物品を運搬する用具、乳母車、老人車、車椅子、ペットカート、荷車等において有利に利用される。   The lock mechanism of the handcart according to the present invention is advantageously used in tools for carrying people, animals, or articles, baby carriages, elderly cars, wheelchairs, pet carts, carts, and the like.

1 前脚、 2 連結部材、 2a 筒状体、 2b 張出し部、 3 案内スリーブ、 3a 筒状体、 4 後脚、 5 押し棒、 6 ハンドル部材、 7 スライド部材、 8 背面クロス部材、 9 底面クロス部材、 10 座部支持棒、 23 座席ハンモック、 30展開状態ロック機構、 40、折り畳み状態ロック機構、 41 係合レバー(係合部材)、 42 被係合部、 43 ブラケット、 44 軸、 45 レバー支持部材、 45p ピボット、 46 空間、 47 ばね(第1の付勢手段)、 48 ばね(第2の付勢手段)、 A 所定の軌道、 B 所定の軌道と交差する軌道、 G 地面。   DESCRIPTION OF SYMBOLS 1 Front leg, 2 Connection member, 2a Cylindrical body, 2b Overhang | projection part, 3 Guide sleeve, 3a Cylindrical body, 4 Rear leg, 5 Push rod, 6 Handle member, 7 Slide member, 8 Back cross member, 9 Bottom cross member , 10 Seat support rod, 23 Seat hammock, 30 Unfolded state lock mechanism, 40, Folded state lock mechanism, 41 Engagement lever (engagement member), 42 Engaged part, 43 Bracket, 44 shaft, 45 Lever support member , 45p pivot, 46 space, 47 spring (first urging means), 48 spring (second urging means), A predetermined trajectory, B trajectory crossing the predetermined trajectory, G ground.

Claims (9)

手押し車の車体フレームに含まれ、互いに離隔した離隔状態と、互いに近接した近接状態に選択的にされる第1フレーム部材および第2フレーム部材と、
前記第2フレーム部材に設けられる被係合部と、
前記第1フレーム部材に、所定の軌跡に沿って動作可能に設けられて、前記近接状態のときに前記軌跡上の第1位置で前記被係合部と係合して前記近接状態を保持し、前記軌跡上の第2位置で前記被係合部と非係合になる係合部材とを備え、
前記係合部材は前記軌跡から離れた係合不能位置に動作可能であることを特徴とする、手押し車のロック機構。
A first frame member and a second frame member, which are included in a body frame of the handcart and are selectively separated from each other, and close to each other;
An engaged portion provided in the second frame member;
The first frame member is provided so as to be operable along a predetermined trajectory, and is engaged with the engaged portion at a first position on the trajectory in the proximity state to hold the proximity state. An engagement member that is disengaged from the engaged portion at a second position on the locus,
The handcart lock mechanism according to claim 1, wherein the engaging member is operable at an unengageable position away from the locus.
前記係合不能位置にされた係合部材を前記軌跡に付勢する第1の付勢手段をさらに備える、請求項1に記載の手押し車のロック機構。   2. The handcart lock mechanism according to claim 1, further comprising a first urging unit that urges the engagement member brought into the non-engageable position toward the locus. 前記第2位置にされた係合部材を前記第1位置に付勢する第2の付勢手段をさらに備える、請求項1または2に記載の手押し車のロック機構。   The handcart lock mechanism according to claim 1 or 2, further comprising second urging means for urging the engaging member in the second position toward the first position. 前記第1の付勢手段の付勢力は、前記第2の付勢手段の付勢力よりも相対的に小さい、請求項3に記載の手押し車のロック機構。   The handcart lock mechanism according to claim 3, wherein the urging force of the first urging means is relatively smaller than the urging force of the second urging means. 前記係合部材は、基端を前記第1フレーム部材側に回動可能に設けられて、遊端が前記軌跡に沿って回動することにより前記被係合部に係合可能な係合レバーを含む、請求項1〜4のいずれかに記載の手押し車のロック機構。   The engagement member is provided with a base end that is pivotable toward the first frame member, and an engagement lever that can be engaged with the engaged portion when the free end pivots along the locus. The pushcart lock mechanism according to any one of claims 1 to 4, further comprising: 前記係合部材は、前記第1フレーム部材側に設けられて、前記係合レバーの基端を前記軌跡と交差する方向に移動可能に支持するレバー支持部材をさらに含む、請求項5に記載の手押し車のロック機構。   The said engagement member is further provided in the said 1st frame member side, The lever support member which further supports the base end of the said engagement lever so that a movement in the direction which cross | intersects the said locus | trajectory is carried out. Wheelbarrow lock mechanism. 前記レバー支持部材は、前記第1フレーム部材に対して、前記係合レバーの基端を前記軌跡と交差する方向に回動可能に支持する、請求項6に記載の手押し車のロック機構。   7. The handcart lock mechanism according to claim 6, wherein the lever support member supports the first frame member so that the base end of the engagement lever can rotate in a direction intersecting the locus. 前記車体フレームは展開状態および折り畳み状態に選択的に変更可能に構成され、
前記離隔位置は前記展開状態に対応し、
前記近接位置は前記折り畳み状態に対応する、請求項1〜7のいずれかに記載の手押し車のロック機構。
The vehicle body frame is configured to be selectively changeable between a deployed state and a folded state,
The separation position corresponds to the deployed state,
The handcart lock mechanism according to any one of claims 1 to 7, wherein the proximity position corresponds to the folded state.
前記第1フレーム部材および前記第2フレーム部材は、互いに回動可能に連結された前脚および後脚である、請求項8に記載の手押し車のロック機構。   The handcart lock mechanism according to claim 8, wherein the first frame member and the second frame member are a front leg and a rear leg that are rotatably connected to each other.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114684234A (en) * 2020-12-25 2022-07-01 明门瑞士股份有限公司 Folding mechanism of baby carriage and baby carriage comprising same

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Publication number Priority date Publication date Assignee Title
JP2005067379A (en) * 2003-08-25 2005-03-17 Richell Corp Stroller
JP2009269495A (en) * 2008-05-08 2009-11-19 Shima Seisakusho:Kk Folding locking device of walker for aged person

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005067379A (en) * 2003-08-25 2005-03-17 Richell Corp Stroller
JP2009269495A (en) * 2008-05-08 2009-11-19 Shima Seisakusho:Kk Folding locking device of walker for aged person

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114684234A (en) * 2020-12-25 2022-07-01 明门瑞士股份有限公司 Folding mechanism of baby carriage and baby carriage comprising same

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