JP4240368B2

JP4240368B2 - Lock structure of hinged parts

Info

Publication number: JP4240368B2
Application number: JP2003104846A
Authority: JP
Inventors: 新矢山口; 友康村上
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2003-04-09
Filing date: 2003-04-09
Publication date: 2009-03-18
Anticipated expiration: 2023-04-09
Also published as: JP2004312905A

Description

【０００１】
【発明の属する技術分野】
本発明は、ヒンジで連結された部品のロック構造に関する。
【０００２】
【従来の技術】
従来、ヒンジで連結された部品のロック構造として、ヒンジで開閉自在に連結された第一部品と第二部品のうち、第一部品のヒンジで連結された部分の反対側の部分に、係止突部を有する雄係止部を備え、第二部品のヒンジで連結された部分の反対側の部分に、前記係止突部と係止し合う係止面を有する雌係止部を備え、前記雄係止部と前記雌係止部とでロック部を構成するものが知られている（例えば、特許文献１、特許文献２参照。）。
【０００３】
これら特許文献１及び特許文献２に開示されたヒンジで連結された部品のロック構造は、いずれもヒンジとロック部との間に高低差が少なく、雄係止部が雌係止部に対してほぼ鉛直方向に出入りするようになっている。
【０００４】
一方、前記ロック構造を有しヒンジとロック部との間の高低差が大きい部品の一例を図９に示す。図において、４０，４１は断面Ｌ字状に形成された第一部品、第二部品であり、これら第一部品４０と第二部品４１はヒンジ４２で開閉自在に連結されている。第一部品４０のヒンジ４２で連結された部分の反対側の部分、具体的には、壁部４３の、ヒンジ４２と反対側の端部には、ヒンジ４２の軸方向と直交する方向に突出させた係止突部４４を先端部に有し幅方向がヒンジの軸方向となるように形成された雄係止部４５を備えている。また、第二部品４１のヒンジ４２で連結された部分の反対側の部分、具体的には壁部４６には、前記係止突部４４に対応する位置に配置され該係止突部４４と係止し合う係止面４７を有する雌係止部４８を備えている。そして、前記雄係止部４５と前記雌係止部４８とでロック部４９が構成されている。かかる構成において、第一部品４０と第二部品４１とを閉止状態におくためには、第一部品４０を、ヒンジ４２を中心にして図中一点鎖線で示す回転軌跡で回転させて係止突部４４と係止面４７とを係止させ合ってロックする。
【０００５】
【特許文献１】
実開平６−２９０３０号公報
【０００６】
【特許文献２】
実開平６−６６２４２号公報
【０００７】
【発明が解決しようとする課題】
このような図９に示す部品にあっては、次のような問題が生じる可能性がある。すなわち、図９に示す部品にあっては、前記特許文献１及び特許文献２に開示されたものとは異なり、第一部品４０の回転の中心であるヒンジ４２とロック部４９との間の高低差が大きくなっていることから、雄係止部４５が雌係止部４８に対して、斜め方向に出入りするような回転軌跡となる。したがって、閉止状態にある第一部品４０に開放方向への力が加わった場合、雄係止部４５はヒンジ４２に対して近づくようにして移動することから、ヒンジ４２の軸方向と直交する方向に突出させた係止突部４４と係止面４７との引っ掛かり面積が小さくなり、ロックが外れやすくなるおそれがある。
【０００８】
一方、樹脂製品においては、成形時に、例えば図９において仮想線で示す壁部４６のような、壁部の倒れが生じることがある。したがって、特許文献１、特許文献２及び図９に示す部品が樹脂製である場合、第一部品及び第二部品の成形時に、雌係止部及び雄係止部が設けられている壁部がヒンジ側に倒れることがある。特許文献１、特許文献２及び図９に示す部品の何れにおいても、係止突部は、その幅方向がヒンジの軸方向に平行な方向となるように形成され、係止面はこのような係止突部に対応して配置されていることから、壁部の倒れにより、雌係止部がヒンジ側に移動して雄係止部と雌係止部とを係止させ合うことができなくなるおそれもある。
【０００９】
本発明の目的は、ヒンジとロック部との間の高低差が大きくなっているような場合であってもロックが外れにくく、かつ樹脂成形時等における部品の壁部の倒れが生じてもロックさせることができるヒンジで連結された部品のロック構造を提供することにある。
【００１０】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載の発明は、ヒンジで開閉自在に連結された第一部品と第二部品のうち、第一部品の第一の壁部に設けられ前記ヒンジで連結された部分の反対側の部分に、係止突部を有する雄係止部を備え、第二部品の第二の壁部に設けられ前記ヒンジで連結された部分の反対側の部分に、前記係止突部と係止し合う係止面を有する雌係止部を備え、前記雄係止部と前記雌係止部とでロック部を構成するヒンジで連結された部品のロック構造において，
前記雄係止部は、前記第一の壁部の側縁から延設された基部と、該基部から立設され、幅方向が前記ヒンジの軸方向と直交する方向となるように形成される係止アームの先端部に、該係止アーム本体から前記ヒンジの軸方向に突出するようにして形成される傾斜面が設けられた前記係止突部を備えてなり，
前記雌係止部は、開口部を有する筐体部で構成され、該筐体部を構成する壁部のうち、前記係止アームに対応する位置に設けられた筐体壁部の一部が薄肉となっており、前記係止アームの先端部の前記係止突部に対応する位置に配置され該係止突部と係止し合う係止面を備え、前記筐体壁部の上端に前記係止突部の傾斜面と摺接し合う傾斜面を形成してなり，
前記係止面を前記係止突部に対応する位置に配置したことを特徴とする。
【００１１】
このような請求項１に記載の本発明によれば、前記ヒンジの軸方向に突出させた係止突部とこのような係止突部に対応して配置した前記係止面とを係止させ合うことによりロックするので、ヒンジとロック部との間の高低差が大きく、雄係止部と雌係止部のうち、一方が他方に対して斜め方向に出入りしても、ヒンジの軸方向に突出させた係止突部とこれに対応する位置に配置した係止面との引っ掛かり面積は小さくならない。このようなことから、請求項１に記載のヒンジで連結された部品のロック構造によれば、ヒンジとロック部との高低差がほとんどない部品はもちろん、高低差がある部品であってもロックを外れにくくすることができる。したがって、ヒンジで連結された部品において、ヒンジとロック部との高低差の自由度を大きくすることができる。
【００１２】
また、ヒンジの軸方向に突出している前記係止突部は、その幅方向がヒンジの軸方向と直交する方向となるように形成されており、前記係止面はこのような係止突部に対応する位置に配置されている。したがって、樹脂成形時の壁部の倒れが、前記雄係止部を備える第一部品及び前記雌係止部を備える第二部品の、ヒンジで連結された部分の反対側の部分に生じ、雄係止部或いは雌係止部がヒンジ側に移動したとしても、幅方向がヒンジの軸方向と直交する方向となるように形成した係止突部と該係止突部に対応する位置に配置した係止面とを係止させ合ってロックさせることが可能である。
【００１３】
請求項２に記載の発明は、請求項１に記載の発明の係止アームを，角部を切り欠くようにして形成された第一の摺接面を形成したことを特徴とする。
【００１４】
このような請求項２に記載の本発明によれば、前記雄係止部と前記第二部品のヒンジで連結された部分の反対側の部分とが前記摺接面で互いに摺接し合って前記係止突部と係止面とが係止し合う。したがって、係止突部と係止面とを係止させ合うためのロック操作をスムーズに行うことができる。
【００１５】
請求項３に記載の発明は、請求項２に記載の発明の第二部品の前記ヒンジで連結された部分の反対側の前記第二の壁部の側縁の前記筐体部が設けられた部分に、第二の摺接面を形成し、該第二の摺接面を前記係止アームに形成された前記第一の摺接面と摺接し合うようにしたことを特徴とする。
【００１６】
このような請求項３に記載の本発明によれば、前記雌係止部と前記第一部品のヒンジで連結された部分の反対側の部分とが前記摺接面で互いに摺接し合って前記係止突部と係止面とが係止し合う。したがって、係止突部と係止面とを係止させ合うためのロック操作をスムーズに行うことができる。
【００１７】
【発明の実施の形態】
以下、図面を参照して本発明に係るヒンジで連結された部品のロック構造の実施の形態の第１例について説明する。
図１は本例のロック構造を有する部品の全体斜視図、図２は図１に示す部品の正面図、図３は図１の平面図、図４は図２のＡ−Ａ線拡大断面図、図５は雄係止部の摺接面と第二部品のヒンジで連結された反対側の部分に形成された摺接面とが摺接し合う状態を示す図である。
【００１８】
図において、符号１，符号２はワイヤーハーネス用プロテクタを構成する第一部品、第二部品であり、これら第一部品１及び第二部品２は、合成樹脂で形成され、それぞれ壁部３，４、壁部５，６とを有して断面Ｌ字形状に形成されている。壁部３と壁部５にはヒンジ７が設けられており、これにより第一部品１と第二部品２が開閉自在に連結されている。
【００１９】
このような第一部品１と第二部品２とを図２に示すように閉止状態においた場合におけるヒンジ７の反対側の部分には、ロック部８が設けられていて、このロック部８により第一部品１と第二部品２とがロックされるようになっている。
【００２０】
ロック部８は、前記第一部品１の壁部４に設けられた雄係止部９と、前記第二部品２の壁部６に設けられた雌係止部１０とで構成されている。なお、本明細書においては、雄係止部を有する部品を第一部品とし、雌係止部を有する部品を第二部品とする。
【００２１】
前記雄係止部９は、壁部４の側縁４ａから延設された基部１１と基部１１から立設された係止アーム１２とで構成されている。この係止アーム１２は、幅方向がヒンジ７の軸方向と直交する方向となるように形成されている。かかる係止アーム１２は、先端部に、係止アーム本体１２ａからヒンジ７の軸方向に突出するようにして形成され傾斜面１３ａが設けられた係止突部１３を有している。
【００２２】
また、係止アーム１２は、角部を切り欠くようにして形成された摺接面１４を有している。この摺接面１４は前記第二部品２のヒンジ７で連結された部分の反対側の部分、具体的には壁部６の側縁６ａに形成された後述する摺接面と摺接し合うようになっている。
【００２３】
前記雌係止部１０は、壁部６のヒンジ７側とは反対側の面に設けられ、例えば開口部１５ａを有する筐体部１５で構成されている。この筐体部１５を構成する壁部のうち、前記係止アーム１２に対応する位置に設けられた筐体壁部１６は、一部が薄肉となっており、前記係止アーム１２の先端部の係止突部１３に対応する位置に配置され該係止突部１３と係止し合う係止面１７を有している。筐体壁部１６の上端には、前記係止突部１３の傾斜面１３ａと摺接し合う傾斜面１６ａが形成されている。
【００２４】
前記壁部６の側縁６ａには、前記筐体部１５が設けられた部分に、前記係止アーム１２に形成された摺接面１４と摺接し合う摺接面１８が形成されている。
【００２５】
次に作用について説明する。図で示す本例の部品においては、第一部品１をヒンジ７を中心にして図２で一点鎖線で示すような回転軌跡で回転させ、ロック部８でロックして第一部品１と第二部品２とを閉止状態におく。具体的には、雄係止部９の係止アーム１２を、雌係止部１０を構成する筐体部１５の開口部１５ａ内に挿入し、係止アーム１２の先端部に形成された係止突部１３と、雌係止部１０の筐体壁部１６に形成された係止面１７とを係止させ合ってロックする。
【００２６】
その際、第一部品１の回転の中心であるヒンジ７とロック部８との間には高低差があり、このような高低差があることにより、第一部品１をヒンジ７を中心にして回転させたときの回転軌跡は、図で示すように雄係止部９が雌係止部１０に対して斜めに出入りするような回転軌跡となる。しかしながら、本例のロック構造においては、係止突部１３をヒンジ７の軸方向に突出させ、係止突部１３と係止し合う係止面をこのような係止突部１３に対応するようにして配置している。これにより、前記回転軌跡を有する閉止状態にある第一部品１に開放方向への力が加わり、雄係止部９がヒンジ７に対して近づくようにして移動しても（すなわち雄係止部９が、図４で紙面に対して向こう側の方向に移動しても）、係止突部１３と係止面１７との引っ掛かり面積が小さくならない。
【００２７】
以上のことから、本例のヒンジで連結された部品のロック構造によれば、ヒンジ７とロック部８との高低差がほとんどない部品はもちろん、高低差がある部品であってもロックを外れにくくすることができる。したがって、ヒンジで連結された部品において、ヒンジ７とロック部８との高低差の自由度を大きくすることができる。
【００２８】
また、ヒンジ７の軸方向に突出している前記係止突部１３は、その幅方向がヒンジ７の軸方向と直交する方向となるように形成されており、前記係止面１７はこのような係止突部１３に対応する位置に配置されている。したがって、樹脂成形時に第二部品２の壁部６がヒンジ７に向かって倒れても、幅方向がヒンジ７の軸方向と直交する方向となっている係止突部１３と該係止突部１３に対応して配置した係止面１７とを係止させ合ってロックさせることが可能である。
【００２９】
また、係止アーム１２の摺接面１４と、前記壁部６の側縁６ａに形成された摺接面１８とが、図５に示すように摺接し合って前記係止突部１３と前記係止面１７とが係止し合う。したがって、係止突部１３と係止面１７とを係止させ合うためのロック操作をスムーズに行うことができる。
【００３０】
次に、本発明に係るヒンジで連結された部品のロック構造の実施の形態の第２例について説明する。なお、第１例と同様の構成には同一の符号を付して説明を省略する。
【００３１】
図６は本例のロック構造を有する部品の平面図、図７は図６の一部拡大側面図、図８は図６に示す本例のロック構造を有する部品の雌係止部の拡大断面図である。
【００３２】
本例においては、図６において、向かって左側が、雄係止部２０を有する第一部品１、右側が、雌係止部２１を有する第二部品２となっており、雄係止部２０と雌係止部２１とでロック部８が構成されている。
【００３３】
前記雄係止部２０は、壁部４のヒンジ７側とは反対側の面に設けられ、開口部２２ａを有する筐体部２２で構成されている。この筐体部２２を構成する壁部のうち、雌係止部２１の後述する係止アームに対応する位置に設けられた筐体壁部２３には、ヒンジ７の軸方向に突出するようにして形成され、傾斜面２４ａが設けられた係止突部２４が形成されている。
【００３４】
前記壁部４の側縁４ａには、前記筐体部２２が設けられた部分に、後述する係止アームに形成された摺接面と摺接し合う摺接面２５が形成されている。
【００３５】
前記雌係止部２１は、壁部６の側縁６ａから延設された基部２６と基部２６から立設された係止アーム２７とで構成されている。
【００３６】
この係止アーム２７は、幅方向がヒンジ７の軸方向と直交する方向となるように形成されている。かかる係止アーム２７は、先端部に係止突部２４の傾斜面２４ａと摺接し合う傾斜面２８を有し、該先端部が断面先鋭形状に形成されている。また、係止アーム２７は、角部を切り欠くようにして形成された摺接面２９を有している。この摺接面２９は前記第一部品１のヒンジ７で連結された部分の反対側の部分、具体的には壁部４の側縁４ａに形成された摺接面２５と摺接するようになっている。
【００３７】
また、係止アーム２７には、貫通孔３０が形成されている。この貫通孔３０には、前記雄係止部２０の係止突部２４と係止し合う係止面３１が形成されている。この係止面３１は、係止突部２４に対応する位置に配置されている。
【００３８】
このような本例においては、第二部品２を回転させて、雌係止部２１の係止アーム２７を雄係止部２０の筐体部２２の開口部２２ａ内に挿入し、係止アーム２７の貫通孔３０に形成された係止面３１と係止突部２４とを係止させ合ってロックする（図８）。このとき、第１例と同様、雌係止部２１の係止アーム２７が雄係止部２０に対して斜め方向に出入りする回転軌跡となる。しかし、係止突部２４をヒンジ７の軸方向に突出させ、係止突部２４と係止し合う係止面３１をこのような係止突部２４に対応するようにして配置しているので、第１例と同様、係止突部１３と係止面１７との引っ掛かり面積が小さくならずロックが外れにくい。
【００３９】
また、ヒンジ７の軸方向に突出している係止突部２４は、その幅方向がこれと直交する方向となるように形成されており、係止面３１はこれに対応する位置に配置されているので、第１例と同様、樹脂成形時に第一部品１の壁部４がヒンジ７に向かって倒れても、係止突部２４と係止面３１とを係止させ合ってロックさせることが可能である。
【００４０】
また、係止アーム２７の摺接面２９と、前記壁部４の側縁４ａに形成された摺接面２５とが、摺接し合って前記係止突部２４と前記係止面３１とが係止し合う。したがって、係止突部２４と係止面３１とを係止させ合うためのロック操作をスムーズに行うことができる。
【００４１】
なお、上記各実施の形態では、本発明のロック構造が適用される部品としてワイヤーハーネス用プロテクタを挙げて説明したが、本発明は、このようなものに限定されるものではなく、例えば、電気接続箱、コネクタカバー等、様々なヒンジで連結されている部品に適用される。
【００４２】
【発明の効果】
以上説明したように請求項１に記載の発明によれば、高低差がある部品であってもロックを外れにくくすることができ、このようなことから、ヒンジで連結された部品において、ヒンジとロック部との高低差の自由度を大きくすることも可能である。また、樹脂成形時の壁部の倒れが生じても、係止突部と係止面とを係止させ合ってロックさせることが可能である。
【００４３】
請求項２及び請求項３に記載の発明によれば、係止突部と係止面とを係止させ合うためのロック操作をスムーズに行うことができる。
【図面の簡単な説明】
【図１】本発明の実施の形態の第１例のロック構造を有する部品の全体斜視図。
【図２】図１に示す部品の正面図。
【図３】図１の平面図。
【図４】図２のＡ−Ａ線拡大断面図。
【図５】雄係止部の摺接面と第二部品のヒンジで連結された反対側の部分に形成された摺接面とが摺接し合う状態を示す図。
【図６】本発明の実施の形態の第２例のロック構造を有する部品の平面図。
【図７】図６の一部拡大正面図。
【図８】図６に示す本例のロック構造を有する部品の雌係止部の拡大断面図。
【図９】従来のロック構造を有する部品の正面図。
【符号の説明】
１第一部品
２第二部品
７ヒンジ
９，２０雄係止部
１０，２１雌係止部
１３，２４係止突部
１４，１８，２５，２９摺接面
１７，３１係止面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a locking structure for parts connected by a hinge.
[0002]
[Prior art]
Conventionally, as a lock structure of the parts connected by the hinge, the first part and the second part connected to be freely opened and closed by the hinge are locked to the part opposite to the part connected by the hinge of the first part. A male locking portion having a protruding portion, and a female locking portion having a locking surface that locks with the locking protruding portion on the opposite side of the portion connected by the hinge of the second part; What constitutes a lock part with the above-mentioned male locking part and the above-mentioned female locking part is known (for example, refer to patent documents 1 and patent documents 2).
[0003]
The lock structure of the parts connected by hinges disclosed in Patent Document 1 and Patent Document 2 has a small difference in height between the hinge and the lock portion, and the male locking portion has a smaller height than the female locking portion. It is designed to go in and out almost vertically.
[0004]
On the other hand, FIG. 9 shows an example of a part having the lock structure and having a large height difference between the hinge and the lock part. In the figure, reference numerals 40 and 41 denote a first part and a second part having an L-shaped cross section, and the first part 40 and the second part 41 are connected to each other by a hinge 42 so as to be opened and closed. The part of the first part 40 opposite to the part connected by the hinge 42, specifically, the end of the wall 43 opposite to the hinge 42 protrudes in a direction perpendicular to the axial direction of the hinge 42. A male locking portion 45 is provided that has a locking protrusion 44 that is formed at the tip and is formed such that the width direction is the axial direction of the hinge. Further, the portion of the second part 41 opposite to the portion connected by the hinge 42, specifically, the wall portion 46, is disposed at a position corresponding to the locking protrusion 44 and the locking protrusion 44. A female locking portion 48 having a locking surface 47 for locking each other is provided. The male locking portion 45 and the female locking portion 48 constitute a lock portion 49. In such a configuration, in order to keep the first component 40 and the second component 41 in the closed state, the first component 40 is rotated around the hinge 42 along the rotation locus indicated by the alternate long and short dash line in the drawing, and the locking projection The portion 44 and the locking surface 47 are locked and locked together.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 6-29030 [0006]
[Patent Document 2]
Japanese Utility Model Publication No. 6-66242 [0007]
[Problems to be solved by the invention]
Such a component shown in FIG. 9 may cause the following problem. That is, in the component shown in FIG. 9, unlike those disclosed in Patent Document 1 and Patent Document 2, the height between the hinge 42 that is the center of rotation of the first component 40 and the lock portion 49 is different. Since the difference is large, the rotation locus is such that the male locking portion 45 moves in and out of the female locking portion 48 in an oblique direction. Accordingly, when a force in the opening direction is applied to the first component 40 in the closed state, the male locking portion 45 moves so as to approach the hinge 42, and thus a direction orthogonal to the axial direction of the hinge 42. The catching area between the locking projection 44 and the locking surface 47 that protrudes to the surface is reduced, and the lock may be easily released.
[0008]
On the other hand, in a resin product, a wall part may fall, such as a wall part 46 indicated by a virtual line in FIG. Therefore, when the parts shown in Patent Literature 1, Patent Literature 2 and FIG. 9 are made of resin, the wall portion provided with the female locking portion and the male locking portion is formed when the first component and the second component are molded. May fall to the hinge side. In any of the components shown in Patent Document 1, Patent Document 2 and FIG. 9, the locking projection is formed so that the width direction thereof is parallel to the axial direction of the hinge, and the locking surface is such Since it is arranged corresponding to the locking projection, the female locking part can move to the hinge side and the male locking part and the female locking part can be locked together by the wall part falling down. There is also a risk of disappearing.
[0009]
The object of the present invention is to prevent the lock from coming off even when the height difference between the hinge and the lock part is large, and to lock even if the wall part of the part falls down during resin molding, etc. It is an object of the present invention to provide a locking structure for hinged parts that can be made to move.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, of the first part and the second part connected to each other by a hinge, the hinge is provided on the first wall of the first part. A male locking part having a locking projection is provided on a part opposite to the connected part, and is provided on the second wall part of the second part and on a part opposite to the part connected by the hinge, In a lock structure of a component that includes a female locking portion having a locking surface that locks with the locking protrusion, and is connected by a hinge that forms a lock portion between the male locking portion and the female locking portion. ,
The male locking portion is formed such that a base portion extending from a side edge of the first wall portion and a base portion is erected so that the width direction is a direction perpendicular to the axial direction of the hinge. The front end of the locking arm is provided with the locking protrusion provided with an inclined surface formed so as to protrude from the locking arm main body in the axial direction of the hinge,
The female locking portion is configured by a housing portion having an opening, and among the wall portions constituting the housing portion, a part of the housing wall portion provided at a position corresponding to the locking arm is formed. It is thin and has a locking surface that is disposed at a position corresponding to the locking protrusion at the tip of the locking arm and engages with the locking protrusion, and is provided at the upper end of the housing wall. Forming an inclined surface that is in sliding contact with the inclined surface of the locking projection;
The locking surface is arranged at a position corresponding to the locking protrusion.
[0011]
According to the present invention as set forth in claim 1, the locking protrusions protruding in the axial direction of the hinge and the locking surfaces arranged corresponding to the locking protrusions are locked. Since the locking is achieved by engaging, the height difference between the hinge and the locking part is large, and even if one of the male locking part and the female locking part enters or exits in an oblique direction with respect to the other, the axis of the hinge The catching area between the locking protrusions protruding in the direction and the locking surfaces arranged at the corresponding positions is not reduced. For this reason, according to the lock structure of the parts connected by the hinge according to claim 1, not only a part having almost no height difference between the hinge and the lock part, but also a part having a height difference can be locked. Can be made difficult to come off. Therefore, in the components connected by the hinge, the degree of freedom in the height difference between the hinge and the lock portion can be increased.
[0012]
Further, the locking projection protruding in the axial direction of the hinge is formed such that the width direction thereof is perpendicular to the axial direction of the hinge, and the locking surface is such a locking projection. It is arranged at a position corresponding to. Therefore, the wall part collapses during resin molding in the first part having the male locking part and the second part having the female locking part on the opposite side of the part connected by the hinge. Even if the locking part or the female locking part moves to the hinge side, the locking protrusion formed so that the width direction is perpendicular to the axial direction of the hinge and the position corresponding to the locking protrusion It is possible to lock the locking surfaces with each other.
[0013]
The invention described in claim 2 is characterized in that the locking arm of the invention described in claim 1 is formed with a first slidable contact surface formed by cutting out a corner portion .
[0014]
According to the second aspect of the present invention, the male locking portion and a portion on the opposite side of the portion connected by the hinge of the second component are in sliding contact with each other on the sliding contact surface. The locking protrusion and the locking surface are locked together. Therefore, it is possible to smoothly perform a locking operation for locking the locking protrusion and the locking surface.
[0015]
According to a third aspect of the present invention, there is provided the casing portion on the side edge of the second wall portion on the opposite side of the portion connected by the hinge of the second part of the second aspect of the invention. A second sliding contact surface is formed on the portion, and the second sliding contact surface is in sliding contact with the first sliding contact surface formed on the locking arm .
[0016]
According to the third aspect of the present invention, the female locking portion and the portion on the opposite side of the portion connected by the hinge of the first component are in sliding contact with each other on the sliding contact surface. The locking protrusion and the locking surface are locked together. Therefore, it is possible to smoothly perform a locking operation for locking the locking protrusion and the locking surface.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first example of an embodiment of a locking structure for parts connected by hinges according to the present invention will be described with reference to the drawings.
1 is an overall perspective view of a part having a lock structure of this example, FIG. 2 is a front view of the part shown in FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. FIG. 5 is a view showing a state in which the sliding contact surface of the male locking portion and the sliding contact surface formed on the opposite side portion connected by the hinge of the second part are in sliding contact with each other.
[0018]
In the figure, reference numerals 1 and 2 are a first part and a second part that constitute a wire harness protector, and the first part 1 and the second part 2 are made of synthetic resin and have wall portions 3, 4 respectively. The wall portions 5 and 6 are formed in an L-shaped cross section. The wall portion 3 and the wall portion 5 are provided with hinges 7 so that the first component 1 and the second component 2 are connected so as to be freely opened and closed.
[0019]
When the first component 1 and the second component 2 are in the closed state as shown in FIG. 2, a lock portion 8 is provided on the opposite side of the hinge 7. The first part 1 and the second part 2 are locked.
[0020]
The lock portion 8 includes a male locking portion 9 provided on the wall portion 4 of the first component 1 and a female locking portion 10 provided on the wall portion 6 of the second component 2. In the present specification, a part having a male locking part is referred to as a first part, and a part having a female locking part is referred to as a second part.
[0021]
The male locking portion 9 includes a base portion 11 extending from the side edge 4 a of the wall portion 4 and a locking arm 12 erected from the base portion 11. The locking arm 12 is formed so that the width direction is perpendicular to the axial direction of the hinge 7. The locking arm 12 has a locking projection 13 formed at the tip portion so as to protrude from the locking arm main body 12a in the axial direction of the hinge 7 and provided with an inclined surface 13a.
[0022]
The locking arm 12 has a slidable contact surface 14 formed so as to cut out a corner. The slidable contact surface 14 is in slidable contact with a portion on the opposite side of the portion connected by the hinge 7 of the second component 2, specifically, a slidable contact surface described later formed on the side edge 6 a of the wall 6. It has become.
[0023]
The female locking portion 10 is provided on the surface of the wall portion 6 opposite to the hinge 7 side, and is constituted by a housing portion 15 having an opening 15a, for example. Among the wall portions constituting the housing portion 15, a portion of the housing wall portion 16 provided at a position corresponding to the locking arm 12 is thin, and the distal end portion of the locking arm 12 is formed. It has the locking surface 17 which is arrange | positioned in the position corresponding to this locking protrusion 13, and locks with this locking protrusion 13. As shown in FIG. An inclined surface 16 a is formed at the upper end of the housing wall portion 16 so as to be in sliding contact with the inclined surface 13 a of the locking projection 13.
[0024]
On the side edge 6 a of the wall portion 6, a slidable contact surface 18 is formed at a portion where the housing portion 15 is provided to slidably contact the slidable contact surface 14 formed on the locking arm 12.
[0025]
Next, the operation will be described. In the part of the present example shown in the figure, the first part 1 is rotated around the hinge 7 along a rotation locus as shown by a one-dot chain line in FIG. The part 2 is put in a closed state. Specifically, the locking arm 12 of the male locking portion 9 is inserted into the opening 15 a of the housing portion 15 constituting the female locking portion 10, and the locking arm 12 is formed at the distal end portion of the locking arm 12. The locking protrusion 13 and the locking surface 17 formed on the housing wall 16 of the female locking part 10 are locked and locked together.
[0026]
At that time, there is a difference in height between the hinge 7 which is the center of rotation of the first part 1 and the lock portion 8. By such a difference in height, the first part 1 is centered on the hinge 7. The rotation trajectory when rotated is such that the male locking portion 9 enters and exits obliquely with respect to the female locking portion 10 as shown in the figure. However, in the lock structure of this example, the locking protrusion 13 protrudes in the axial direction of the hinge 7, and the locking surface that locks with the locking protrusion 13 corresponds to the locking protrusion 13. It is arranged like this. Thereby, a force in the opening direction is applied to the first component 1 in the closed state having the rotation locus so that the male locking portion 9 moves so as to approach the hinge 7 (that is, the male locking portion). 9 is moved in the direction away from the paper surface in FIG. 4), the catching area between the locking projection 13 and the locking surface 17 is not reduced.
[0027]
From the above, according to the lock structure of the parts connected by the hinges of this example, not only the parts with almost no difference in height between the hinge 7 and the lock part 8, but also the parts with the difference in height can be unlocked. Can be difficult. Therefore, in the components connected by the hinge, the degree of freedom in the height difference between the hinge 7 and the lock portion 8 can be increased.
[0028]
The locking projection 13 protruding in the axial direction of the hinge 7 is formed so that the width direction thereof is perpendicular to the axial direction of the hinge 7, and the locking surface 17 is formed in such a manner. It is arranged at a position corresponding to the locking projection 13. Therefore, even when the wall 6 of the second part 2 falls toward the hinge 7 during resin molding, the locking protrusion 13 and the locking protrusion whose width direction is perpendicular to the axial direction of the hinge 7. It is possible to lock the locking surface 17 arranged corresponding to 13 by locking each other.
[0029]
Further, the sliding contact surface 14 of the locking arm 12 and the sliding contact surface 18 formed on the side edge 6a of the wall portion 6 are in sliding contact with each other as shown in FIG. The locking surface 17 is locked with each other. Therefore, it is possible to smoothly perform a locking operation for locking the locking protrusion 13 and the locking surface 17 together.
[0030]
Next, a second example of the embodiment of the lock structure of the parts connected by the hinge according to the present invention will be described. In addition, the same code | symbol is attached | subjected to the structure similar to a 1st example, and description is abbreviate | omitted.
[0031]
6 is a plan view of a part having the lock structure of this example, FIG. 7 is a partially enlarged side view of FIG. 6, and FIG. 8 is an enlarged cross section of a female locking portion of the part having the lock structure of this example shown in FIG. FIG.
[0032]
In this example, in FIG. 6, the left side is the first part 1 having the male locking part 20, and the right side is the second part 2 having the female locking part 21. The lock portion 8 is constituted by the female engaging portion 21.
[0033]
The male locking portion 20 is provided on a surface of the wall portion 4 opposite to the hinge 7 side, and includes a housing portion 22 having an opening 22a. Of the wall portions constituting the housing portion 22, the housing wall portion 23 provided at a position corresponding to a later-described locking arm of the female locking portion 21 protrudes in the axial direction of the hinge 7. A locking projection 24 having an inclined surface 24a is formed.
[0034]
A slidable contact surface 25 is formed on the side edge 4a of the wall portion 4 at a portion where the housing portion 22 is provided, and slidably contacts a slidable contact surface formed on a locking arm described later.
[0035]
The female locking portion 21 includes a base portion 26 extending from the side edge 6 a of the wall portion 6 and a locking arm 27 erected from the base portion 26.
[0036]
The locking arm 27 is formed so that the width direction is perpendicular to the axial direction of the hinge 7. The locking arm 27 has an inclined surface 28 that is in sliding contact with the inclined surface 24a of the locking projection 24 at the distal end, and the distal end is formed in a sharp shape. The locking arm 27 has a slidable contact surface 29 formed so as to cut out a corner. The slidable contact surface 29 comes into slidable contact with a portion opposite to the portion connected by the hinge 7 of the first component 1, specifically, a slidable contact surface 25 formed on the side edge 4 a of the wall portion 4. ing.
[0037]
In addition, a through hole 30 is formed in the locking arm 27. A locking surface 31 that locks with the locking protrusion 24 of the male locking portion 20 is formed in the through hole 30. The locking surface 31 is disposed at a position corresponding to the locking protrusion 24.
[0038]
In this example, the second component 2 is rotated, and the locking arm 27 of the female locking portion 21 is inserted into the opening 22 a of the housing portion 22 of the male locking portion 20. The locking surfaces 31 and the locking projections 24 formed in the through holes 30 of the 27 are locked and locked together (FIG. 8). At this time, as in the first example, the locking arm 27 of the female locking portion 21 becomes a rotational locus that goes in and out of the male locking portion 20 in an oblique direction. However, the locking projections 24 protrude in the axial direction of the hinge 7 and the locking surfaces 31 that lock with the locking projections 24 are arranged so as to correspond to the locking projections 24. Therefore, as in the first example, the catching area between the locking projection 13 and the locking surface 17 is not reduced and the lock is difficult to be released.
[0039]
Further, the locking projection 24 protruding in the axial direction of the hinge 7 is formed so that the width direction thereof is perpendicular to the locking projection 24, and the locking surface 31 is disposed at a position corresponding thereto. Therefore, as in the first example, even when the wall 4 of the first component 1 falls toward the hinge 7 during resin molding, the locking protrusion 24 and the locking surface 31 are locked and locked together. Is possible.
[0040]
Further, the sliding contact surface 29 of the locking arm 27 and the sliding contact surface 25 formed on the side edge 4a of the wall portion 4 are in sliding contact with each other so that the locking projection 24 and the locking surface 31 are in contact with each other. Lock together. Therefore, the locking operation for locking the locking protrusion 24 and the locking surface 31 together can be performed smoothly.
[0041]
In each of the above embodiments, the wire harness protector has been described as a part to which the lock structure of the present invention is applied. However, the present invention is not limited to such a case. It is applied to parts connected by various hinges such as connection boxes and connector covers.
[0042]
【The invention's effect】
As described above, according to the first aspect of the present invention, even a part having a height difference can be made difficult to be unlocked. For this reason, in a part connected by a hinge, It is also possible to increase the degree of freedom of the height difference from the lock portion. Further, even if the wall portion falls during resin molding, the locking projection and the locking surface can be locked and locked together.
[0043]
According to invention of Claim 2 and Claim 3, the locking operation for making a latching protrusion and a latching surface latch can be performed smoothly.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a part having a lock structure according to a first example of an embodiment of the present invention.
FIG. 2 is a front view of the component shown in FIG.
FIG. 3 is a plan view of FIG. 1;
4 is an enlarged cross-sectional view taken along line AA in FIG.
FIG. 5 is a view showing a state in which a sliding contact surface of a male locking portion and a sliding contact surface formed on an opposite side portion connected by a hinge of a second part are in sliding contact with each other.
FIG. 6 is a plan view of a part having a lock structure according to a second example of an embodiment of the present invention.
7 is a partially enlarged front view of FIG. 6;
8 is an enlarged cross-sectional view of a female locking portion of a part having the lock structure of this example shown in FIG.
FIG. 9 is a front view of a component having a conventional lock structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st part 2 2nd part 7 Hinge 9,20 Male locking part 10,21 Female locking part 13,24 Locking protrusion 14,18,25,29 Sliding contact surface 17,31 Locking surface

Claims

Of the first part and the second part that are connected to each other by a hinge, the first part and the second part are provided on the first wall of the first part and have a locking projection on the opposite side of the part connected by the hinge. A female engagement member having a male engagement portion and having an engagement surface that engages with the engagement protrusion at a portion opposite to the portion provided on the second wall portion of the second part and connected by the hinge. In the lock structure of the parts which are provided with a stop portion and are connected by a hinge that forms a lock portion between the male locking portion and the female locking portion,
The male locking portion is formed such that a base portion extending from a side edge of the first wall portion and a base portion is erected so that the width direction is a direction perpendicular to the axial direction of the hinge. The front end of the locking arm is provided with the locking protrusion provided with an inclined surface formed so as to protrude from the locking arm main body in the axial direction of the hinge,
The female locking portion is configured by a housing portion having an opening, and among the wall portions constituting the housing portion, a part of the housing wall portion provided at a position corresponding to the locking arm is formed. It is thin and has a locking surface that is disposed at a position corresponding to the locking protrusion at the tip of the locking arm and engages with the locking protrusion, and is provided at the upper end of the housing wall. Forming an inclined surface that is in sliding contact with the inclined surface of the locking projection;
A locking structure for parts connected by a hinge, wherein the locking surface is arranged at a position corresponding to the locking protrusion.

The locking arm is
2. The hinged component locking structure according to claim 1 , wherein a first sliding contact surface formed so as to cut out a corner portion is formed .

The part housing unit is provided before Symbol opposite side of the second wall portion side edge of the connecting portion at the hinge of the second component to form a second sliding surface, said 3. The lock structure for parts connected by a hinge according to claim 2 , wherein the second sliding contact surface is in sliding contact with the first sliding contact surface formed on the locking arm .