JP2014220946A - Locking structure - Google Patents

Locking structure Download PDF

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JP2014220946A
JP2014220946A JP2013099566A JP2013099566A JP2014220946A JP 2014220946 A JP2014220946 A JP 2014220946A JP 2013099566 A JP2013099566 A JP 2013099566A JP 2013099566 A JP2013099566 A JP 2013099566A JP 2014220946 A JP2014220946 A JP 2014220946A
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lock arm
female
male
arm portion
distal end
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JP6105382B2 (en
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正義 亀ノ上
Masayoshi Kamenoue
正義 亀ノ上
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Yazaki Corp
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Yazaki Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box

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  • Connection Or Junction Boxes (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a locking structure that is able to improve locking strength without degrading insertion performance.SOLUTION: A locking structure comprises: a female lock arm part 11 whose basal end side is connected to a box part integrally formed on a box side wall and which has a female lock projection 23 on the side of a leading end serving as a free end; a male lock arm part 13 whose basal end side is connected to the upper end part of a case side wall and whose male lock pat 31 is locked in the female lock projection 23, the male lock part 31 being formed near a leading end part 37 serving as a free end and inserted into the box part; and a bend restricting part 15 that is provided at the leading end part 37 of the male lock arm part 13 and that restricts bend of the female lock arm part 11 by engaging with the leading end part 33 of the female lock arm part 11 in the relative position of the female lock arm part 11 and male lock arm part 13, where the male lock part 31 is locked in the female lock projection 23.

Description

本発明は、ロック構造に関する。   The present invention relates to a lock structure.

近年、車載電装品の増加に伴い、電源や電気信号を分配するジャンクションボックスが大型化し、構造が複雑化している。このような大型化や複雑化に対応し、回路変更にも柔軟対応できるようにするため、電気接続箱であるジャンクションボックス本体に対し、リレーボックスやヒューズボックス等を付設の電気接続箱として取付可能とした連結構造を採用する場合がある（特許文献１参照）。
また、車両に搭載される電気接続箱及びそれを収納する外部ボックス等のボックスに適用されるボックスのロック構造として、種々のものが従来より提案されている（特許文献２参照）。 In recent years, with the increase in in-vehicle electrical components, junction boxes for distributing power and electric signals have become larger and the structure has become complicated. In order to respond to such an increase in size and complexity, and to be able to flexibly respond to circuit changes, it is possible to install a relay box, fuse box, etc. as an attached electrical junction box on the junction box body, which is an electrical junction box. In some cases, the connection structure is adopted (see Patent Document 1).
Further, various types of lock structures for boxes applied to boxes such as an electric connection box mounted on a vehicle and an external box for housing the box have been proposed (see Patent Document 2).

このような連結構造やロック構造では、例えばジャンクションボックス本体の側壁外面に設けた係止受部に対して、リレーボックスの側壁外面に設けた係止部を係合することで、ジャンクションボックス本体とリレーボックスとを連結するロック構造を備えている。
この種のロック構造として、例えば図６（ａ）に示すものでは、ジャンクションボックス本体５０１と、ジャンクションボックス本体５０１の下部開口を覆うロアカバー５０３とが、メスロックアーム部５０５及びオスロックアーム部５０７を備えるロック構造によって連結されている。 In such a connection structure or lock structure, for example, by engaging a locking portion provided on the outer side wall of the relay box with a locking receiving portion provided on the outer side wall of the junction box main body, It has a lock structure that connects the relay box.
As this type of lock structure, for example, in the structure shown in FIG. 6A, a junction box main body 501 and a lower cover 503 covering the lower opening of the junction box main body 501 include a female lock arm portion 505 and a male lock arm portion 507. It is connected by a lock structure provided.

図７（ａ）に示すように、係止受部としてのメスロックアーム部５０５は、ボックス側壁５０９に一体成形された箱部５１１にメスロック基端が接続され、自由端となる先端側に係止突起５１３を有する。係止突起５１３には、先端側に向くメス係止面５１５がメスロックガイド面５１７に略垂直に形成されている。
係止部としてのオスロックアーム部５０７は、ボックス側壁５０９と別体のロカカバー側壁５１９の上端部にオスロック基端５２１が接続され、自由端となる先端側に係止爪５２３を有する。オスロックアーム部５０７は、メスロックガイド面５１７に沿ってメスロックアーム部５０５の先端側に向かって移動される。オスロックアーム部５０７には、オスロック基端５２１に向くオス係止面５２５がオスロック側面５２７に略垂直に形成される（図６（ｂ）参照）。 As shown in FIG. 7 (a), the female lock arm 505 serving as a latch receiving portion has a female lock base end connected to a box portion 511 formed integrally with the box side wall 509, and is engaged with a distal end side which is a free end. A stop projection 513 is provided. On the locking projection 513, a female locking surface 515 facing the distal end is formed substantially perpendicular to the female lock guide surface 517.
A male lock arm portion 507 as a locking portion has a male lock base end 521 connected to an upper end portion of a box cover side wall 519 separate from the box side wall 509, and has a locking claw 523 on the distal end side serving as a free end. The male lock arm portion 507 is moved along the female lock guide surface 517 toward the distal end side of the female lock arm portion 505. In the male lock arm portion 507, a male locking surface 525 facing the male lock base end 521 is formed substantially perpendicular to the male lock side surface 527 (see FIG. 6B).

上記構成のロック構造では、ジャンクションボックス本体５０１の下部開口にロアカバー５０３を取り付ける際、オスロックアーム部５０７の係止爪５２３がメスロックガイド面５１７に沿って、メスロックアーム部５０５の先端側に移動される。移動されたオスロックアーム部５０７の係止爪５２３は、メスロックアーム部５０５の係止突起５１３に当接してメスロックアーム部５０５の自由端側を外側へ撓ませる。係止爪５２３のオス係止面５２５が係止突起５１３のメス係止面５１５に一致すると、メスロックアーム部５０５がオスロックアーム部５０７に接近する方向に弾性復帰し、オス係止面５２５とメス係止面５１５とが当接する。メス係止面５１５にオス係止面５２５が当接（係止）したオスロックアーム部５０７は、オスロック基端５２１側に向かう方向への移動（離脱）が規制される。これにより、ジャンクションボックス本体５０１とロアカバー５０３とがロック状態に連結される。   In the lock structure configured as described above, when the lower cover 503 is attached to the lower opening of the junction box body 501, the locking claw 523 of the male lock arm portion 507 extends along the female lock guide surface 517 toward the distal end side of the female lock arm portion 505. Moved. The locking claw 523 of the moved male lock arm 507 abuts on the locking projection 513 of the female lock arm 505 to bend the free end side of the female lock arm 505 outward. When the male locking surface 525 of the locking claw 523 coincides with the female locking surface 515 of the locking projection 513, the female lock arm portion 505 is elastically restored in a direction approaching the male lock arm portion 507, and the male locking surface 525. And the female locking surface 515 come into contact with each other. The movement (detachment) in the direction toward the male lock base end 521 of the male lock arm portion 507 in which the male lock surface 525 abuts (locks) with the female lock surface 515 is restricted. Thereby, the junction box main body 501 and the lower cover 503 are connected in a locked state.

特開２００４−１５９５８号公報JP 2004-15958 A 特開２００７−１６５７６５号公報JP 2007-165765 A

しかしながら、上述した従来のロック構造では、離脱方向に過大に力を加えると、図７（ａ）に示すように、メスロックアーム部５０５が外側に撓み変形し（図中の二点鎖線）、オス係止面５２５とメス係止面５１５のラップ代Ｗが減る可能性ある。或いは、図７（ｂ）に示すように、係止突起５１３または係止爪５２３のどちらかに破断Ｓが生じてロックが外れる可能性がある。
そこで、このようなロック構造におけるロック強度の向上には、係止爪５２３と係止突起５１３のラップ代Ｗを増やすことが有効である。ところが、ラップ代Ｗを増やすと、メスロックアーム部５０５に対するオスロックアーム部５０７の挿入力が高くなるなどの問題が相反して起こる。そこで、従来のロック構造では、ロック強度と挿入力が相互に妥協できるラップ代Ｗで対応していた。このため、挿入性を悪化させずに、ロック強度を向上させることのできるロック構造の開発が望まれている。 However, in the above-described conventional lock structure, when an excessive force is applied in the disengagement direction, as shown in FIG. 7A, the female lock arm portion 505 is bent outward and deformed (two-dot chain line in the figure) The wrap margin W of the male locking surface 525 and the female locking surface 515 may be reduced. Alternatively, as shown in FIG. 7B, there is a possibility that the lock S may be released due to a break S occurring in either the locking protrusion 513 or the locking claw 523.
Therefore, it is effective to increase the wrap margin W of the locking claw 523 and the locking projection 513 in order to improve the lock strength in such a lock structure. However, when the wrap allowance W is increased, problems such as an increase in the insertion force of the male lock arm portion 507 with respect to the female lock arm portion 505 occur. Therefore, in the conventional lock structure, the wrap allowance W that can compromise the lock strength and the insertion force is used. For this reason, the development of a lock structure that can improve the lock strength without deteriorating the insertability is desired.

本発明は上記状況に鑑みてなされたもので、その目的は、挿入性を悪化させずに、ロック強度を向上させることができるロック構造を提供することにある。   This invention is made | formed in view of the said condition, The objective is to provide the lock structure which can improve a lock | rock strength, without deteriorating insertability.

本発明に係る上記目的は、下記構成により達成される。
（１） 第１側壁に一体形成された箱部に基端側が接続され、自由端となる先端側にメス係止突起が形成されるメスロックアーム部と、前記第１側壁と別体の第２側壁の端部に基端側が接続され、自由端となって前記箱部に挿入される先端部の近傍に形成されるオス係止部が前記メス係止突起に係止されるオスロックアーム部と、前記オスロックアーム部の先端部に設けられ、前記オス係止部が前記メス係止突起に係止される前記メスロックアーム部と前記オスロックアーム部の相対位置において前記メスロックアーム部の先端部に係合することにより前記メスロックアーム部の撓みを規制する撓み規制部と、を備えることを特徴とするロック構造。 The above object of the present invention is achieved by the following configuration.
(1) A female lock arm portion having a proximal end connected to a box portion integrally formed with the first side wall and a female locking projection formed on the distal end side serving as a free end; A male lock arm in which a base end side is connected to an end portion of two side walls and a male locking portion formed in the vicinity of a distal end portion inserted into the box portion as a free end is locked to the female locking projection And the female lock arm at a relative position of the female lock arm portion and the male lock arm portion provided at the tip of the male lock arm portion and the male lock portion being locked by the female lock projection. And a bend restricting portion for restricting the bend of the female lock arm portion by engaging with the distal end portion of the lock portion.

上記（１）の構成のロック構造によれば、箱部に挿入されたオスロックアーム部の先端部がメスロックアーム部の先端側に移動されると、オス係止部がメス係止突起に係止され、オスロックアーム部は、基端側に向かう方向への移動（離脱）が規制される。この際、オスロックアーム部の先端部に設けられた撓み規制部が、メスロックアーム部の先端部に係合する。そこで、オスロックアーム部は、従来のロック構造よりも１箇所多い２箇所で離脱が規制されてロックされる。更に、メスロックアーム部の先端部に係合した撓み規制部は、メスロックアーム部の撓みを規制する。即ち、撓み規制部は、形状係合や摩擦係合などによる係止力をメスロックアーム部の先端部に付与することで、オスロックアーム部から離れる方向のメスロックアーム部の撓み変形を規制する。これにより、ロックが２箇所になる係止力の増大に加え、係止力を増やした撓み規制部がオス係止部とメス係止突起とのラップ代の減少も阻止するので、相乗的にロック強度が向上する。   According to the lock structure having the above configuration (1), when the distal end portion of the male lock arm portion inserted into the box portion is moved to the distal end side of the female lock arm portion, the male engagement portion becomes the female engagement projection. The male lock arm part is locked, and movement (detachment) in the direction toward the base end side is restricted. At this time, the bending restricting portion provided at the distal end portion of the male lock arm portion engages with the distal end portion of the female lock arm portion. Therefore, the male lock arm portion is locked by being restricted from being detached at two locations, which is one more than the conventional lock structure. Furthermore, the bending restricting portion engaged with the distal end portion of the female lock arm portion restricts the bending of the female lock arm portion. In other words, the bending restricting portion regulates the bending deformation of the female lock arm portion in the direction away from the male lock arm portion by applying a locking force due to shape engagement or friction engagement to the distal end portion of the female lock arm portion. To do. As a result, in addition to the increase in the locking force with two locks, the flexure restricting part with increased locking force also prevents a decrease in the lap allowance between the male locking part and the female locking projection, so synergistically Lock strength is improved.

（２） 上記（１）の構成のロック構造であって、前記撓み規制部は、前記オスロックアーム部の先端部が基端側に向かって折り返された屈曲部を有していることを特徴とするロック構造。 (2) The lock structure having the configuration of (1), wherein the bending restricting portion has a bent portion in which a distal end portion of the male lock arm portion is folded toward a proximal end side. And lock structure.

上記（２）の構成のロック構造によれば、オスロックアーム部の先端部が基端側に向って折り返された屈曲部を有する撓み規制部によって、メスロックアーム部の撓み変形が規制される。オスロックアーム部の先端部を折り返すことで、オスロックアーム部の先端が、箱部への挿入に好都合な先細形状に容易に形成可能となる。また、この先細形状の形成によって、メスロックアーム部の先端部に係止力を付与するための撓み規制部が同時に形成できる。これにより、メスロックアーム部の撓み変形を規制する撓み規制部の形状が、簡素な構造で、容易に、しかも、安価に製作可能となる。   According to the lock structure having the above configuration (2), the bending deformation of the female lock arm portion is restricted by the bending restriction portion having the bent portion in which the distal end portion of the male lock arm portion is turned back toward the proximal end side. . By folding back the distal end portion of the male lock arm portion, the distal end of the male lock arm portion can be easily formed into a tapered shape convenient for insertion into the box portion. Further, by forming the tapered shape, a bending restricting portion for applying a locking force to the distal end portion of the female lock arm portion can be formed at the same time. As a result, the shape of the bending restricting portion for restricting the bending deformation of the female lock arm portion can be easily and inexpensively manufactured with a simple structure.

（３） 上記（２）の構成のロック構造であって、前記屈曲部は、前記メスロックアーム部の先端部を板厚方向で挟む先端挟持空間が形成されるように折り返されていることを特徴とするロック構造。 (3) In the lock structure configured as described in (2) above, the bent portion is folded back so as to form a distal end clamping space that sandwiches the distal end portion of the female lock arm portion in the plate thickness direction. Features a locking structure.

上記（３）の構成のロック構造によれば、オスロックアーム部の先端部に設けられた撓み規制部がメスロックアーム部の先端部を板厚方向に挟持することで、オスロックアーム部から離れる方向のメスロックアーム部の撓み変形を確実に規制することができる。   According to the lock structure having the configuration of (3) above, the bending restricting portion provided at the distal end portion of the male lock arm portion sandwiches the distal end portion of the female lock arm portion in the plate thickness direction, so that the male lock arm portion It is possible to reliably regulate the bending deformation of the female lock arm portion in the separating direction.

（４） 上記（２）又は（３）の構成のロック構造であって、前記屈曲部の外側には、屈曲方向に沿う補強リブが突設されていることを特徴とするロック構造。 (4) The lock structure having the configuration according to (2) or (3) above, wherein a reinforcing rib along the bending direction protrudes outside the bent portion.

上記（４）の構成のロック構造によれば、撓み規制部の屈曲部に設けられる補強リブによって、屈曲部の強度が高められる。また、ロック構造によっては、撓み規制部が、曲げ性や先端挟持力の調整が必要となる。この場合、補強リブの幅や突出高さ、長さ、形成範囲を適宜設定することにより、撓み規制部の全体形状を変更することなく、曲げ性や先端挟持力の調整が容易に可能となる。   According to the lock structure having the above configuration (4), the strength of the bent portion is increased by the reinforcing rib provided on the bent portion of the deflection regulating portion. Further, depending on the lock structure, the bending restricting portion needs to adjust the bendability and the tip clamping force. In this case, by appropriately setting the width, protruding height, length, and forming range of the reinforcing rib, it becomes possible to easily adjust the bendability and the tip clamping force without changing the overall shape of the deflection regulating portion. .

本発明に係るロック構造によれば、挿入性を悪化させずに、ロック強度を向上させることができる。   According to the lock structure of the present invention, the lock strength can be improved without deteriorating the insertability.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態（以下、「実施形態」という。）を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。   The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

本発明の一実施形態に係るロック構造を備えたジャンクションボックス本体とロアカバーの要部分解斜視図である。It is a junction box main body provided with the lock structure concerning one embodiment of the present invention, and an important section exploded perspective view of a lower cover. 図１に示したオスロックアーム部の拡大斜視図である。It is an expansion perspective view of the male lock arm part shown in FIG. 図１に示したロック構造の嵌合途中状態を説明するための縦断面図である。It is a longitudinal cross-sectional view for demonstrating the fitting middle state of the lock structure shown in FIG. 図１に示したロック構造の嵌合完了状態を説明するための要部拡大縦断面図である。It is a principal part expanded longitudinal cross-sectional view for demonstrating the fitting completion state of the lock structure shown in FIG. 本発明の他の実施形態に係るロック構造を説明するための要部拡大縦断面図である。It is a principal part expanded longitudinal cross-sectional view for demonstrating the lock structure which concerns on other embodiment of this invention. （ａ）は従来のロック構造を備えたジャンクションボックス本体とロアカバーの側面図、（ｂ）は（ａ）に示したオスロックアーム部の拡大斜視図である。(A) is a side view of a junction box main body and a lower cover provided with a conventional lock structure, and (b) is an enlarged perspective view of a male lock arm portion shown in (a). （ａ）は図６（ａ）に示したロック構造のメスロックアーム部とオスロックアーム部の係合状態を説明する要部拡大断面図、（ｂ）は（ａ）に示した係止突起及び係止爪に生じる破断を説明する要部拡大断面図である。(A) is a principal part expanded sectional view explaining the engagement state of the female lock arm part and male lock arm part of the lock structure shown to Fig.6 (a), (b) is the latching protrusion shown to (a) It is a principal part expanded sectional view explaining the fracture | rupture which arises in a latching claw.

以下、本発明に係る実施形態を図面を参照して説明する。
図１に示すように、本発明の一実施形態に係るロック構造は、例えば樹脂製のジャンクションボックス本体と、樹脂製のロアケースの連結構造に用いられる（図６（ａ）参照）。本実施形態に係るロック構造は、メスロックアーム部１１と、オスロックアーム部１３と、撓み規制部１５と、を主要な構成として備えている。 Embodiments according to the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the lock structure according to an embodiment of the present invention is used for, for example, a connection structure of a resin junction box body and a resin lower case (see FIG. 6A). The lock structure according to the present embodiment includes a female lock arm portion 11, a male lock arm portion 13, and a deflection regulating portion 15 as main components.

図１及び図３に示すように、メスロックアーム部１１は、第１側壁であるジャンクションボックス本体のボックス側壁１７に一体形成された箱部１９に基端側が接続される。基端側がボックス側壁１７の箱部１９に支持されたメスロックアーム部１１は、自由端となる先端側にメス係止突起２３が形成される。メス係止突起２３は、メスロックアーム部１１のメスロックガイド面２１に突設され、先端側（図中、上側）に向くメス係止面２３ａを有する。メス係止面２３ａは、メスロックガイド面２１に対して略垂直に形成される。   As shown in FIGS. 1 and 3, the female lock arm portion 11 is connected at its proximal end to a box portion 19 formed integrally with a box side wall 17 of a junction box body that is a first side wall. In the female lock arm portion 11 whose base end side is supported by the box portion 19 of the box side wall 17, a female locking projection 23 is formed on the distal end side serving as a free end. The female locking projection 23 protrudes from the female lock guide surface 21 of the female lock arm portion 11 and has a female locking surface 23a facing the tip side (upper side in the figure). The knife locking surface 23 a is formed substantially perpendicular to the knife lock guide surface 21.

図１乃至図３に示すように、オスロックアーム部１３は、ボックス側壁１７と別体の第２側壁であるロアケースのケース側壁２５の上端部（端部）２７に基端側が接続される。基端側がケース側壁２５の上端部２７に支持されたオスロックアーム部１３は、自由端となって箱部１９に挿入される先端部３７の近傍にオス係止部３１が形成される。メスロックアーム部１１のメス係止突起２３に係止されるオス係止部３１は、オスロックアーム部１３のオスロック側面２９に凹設され、基端側（図中、下側）に向くオス係止面３１ａを有する。オス係止面３１ａは、オスロック側面２９に対して略垂直に形成される。ロアケースは、ジャンクションボックス本体に取り付けられる際、箱部１９に挿入されたオスロックアーム部１３の先端部３７は、メスロックガイド面２１に沿ってメスロックアーム部１１の先端側に向かって移動される。   As shown in FIGS. 1 to 3, the male lock arm portion 13 is connected to the upper end portion (end portion) 27 of the case side wall 25 of the lower case, which is a second side wall separate from the box side wall 17. The male locking arm portion 13 whose base end side is supported by the upper end portion 27 of the case side wall 25 is formed as a free end, and a male locking portion 31 is formed in the vicinity of the distal end portion 37 inserted into the box portion 19. The male locking portion 31 locked to the female locking projection 23 of the female lock arm portion 11 is recessed on the male lock side surface 29 of the male lock arm portion 13 and faces the base end side (lower side in the figure). It has a locking surface 31a. The male locking surface 31 a is formed substantially perpendicular to the male lock side surface 29. When the lower case is attached to the junction box body, the distal end portion 37 of the male lock arm portion 13 inserted into the box portion 19 is moved toward the distal end side of the female lock arm portion 11 along the female lock guide surface 21. The

オスロックアーム部１３の先端側には、撓み規制部１５が設けられている。撓み規制部１５は、オス係止面３１ａとメス係止面２３ａとが当接してオス係止部３１がメス係止突起２３に係止されるメスロックアーム部１１とオスロックアーム部１３の相対位置においてメスロックアーム部１１の先端部３３に係合することによりメスロックアーム部１１の撓みを規制する。   A bending restricting portion 15 is provided on the distal end side of the male lock arm portion 13. The bending restricting portion 15 includes a female lock arm portion 11 and a male lock arm portion 13 in which the male locking surface 31 a and the female locking surface 23 a are in contact with each other and the male locking portion 31 is locked to the female locking projection 23. By engaging the tip 33 of the female lock arm 11 at the relative position, the bending of the female lock arm 11 is restricted.

本実施形態において、撓み規制部１５は、メスロックアーム部１１の先端部３３を板厚方向で挟む先端挟持空間３５が形成されるようにオスロックアーム部１３の先端部３７が基端側に向かって折り返された屈曲部３９を有する返し形状とされている。なお、「折り返される」とは、平板状のオスロックアーム部１３の先端部３７を曲げ加工によって屈曲させる意味ではなく、射出成形型により所定の折り返し形状に一体成形することである。   In the present embodiment, the bending restricting portion 15 has the distal end portion 37 of the male lock arm portion 13 on the proximal end side so as to form a distal end clamping space 35 that sandwiches the distal end portion 33 of the female lock arm portion 11 in the plate thickness direction. It is made into the return shape which has the bending part 39 turned back. Note that “folded back” does not mean that the distal end portion 37 of the flat male lock arm portion 13 is bent by bending, but is integrally formed into a predetermined folded shape by an injection mold.

撓み規制部１５における屈曲部３９の外側には、屈曲方向に沿う凸条の補強リブ４１が突設されている。補強リブ４１は、凸状の幅や突出高さ、延在方向の長さ、形成範囲が適宜に設定される。本実施形態において、補強リブ４１は、図２に示すように、延在方向に直交方向の断面形状が方形状となり、延在方向両端が徐々に低くなって屈曲部３９の外側面と同一面となるように形成されている。   On the outer side of the bent portion 39 in the bending restricting portion 15, protruding reinforcing ribs 41 are provided along the bending direction. The reinforcing rib 41 is appropriately set with a convex width, a protruding height, a length in the extending direction, and a forming range. In the present embodiment, as shown in FIG. 2, the reinforcing rib 41 has a rectangular cross-sectional shape perpendicular to the extending direction, and both ends in the extending direction are gradually lowered to be flush with the outer surface of the bent portion 39. It is formed to become.

また、本実施形態のロック構造では、ジャンクションボックス本体に、メスロックアーム部１１と平行に対面する挿入ガイド面４３が形成される。挿入ガイド面４３は、箱部１９及びメスロックアーム部１１とで、オスロック進入空間４５（図３参照）を区画形成する。オスロック進入空間４５の両側には、メスロックアーム部１１を幅方向に挟んで平行な一対のガイド壁４７が突設される。ガイド壁４７は、オスロック進入空間４５に挿入されるオスロックアーム部１３の両側縁を移動規制して挿入方向を案内する。オスロックアーム部１３の両側縁には、このガイド壁４７に摺接する摺接縁部４９が設けられている。   In the lock structure of the present embodiment, the insertion guide surface 43 that faces the female lock arm portion 11 in parallel is formed on the junction box body. The insertion guide surface 43 forms a male lock entry space 45 (see FIG. 3) with the box portion 19 and the female lock arm portion 11. On both sides of the male lock entry space 45, a pair of parallel guide walls 47 projecting from the female lock arm portion 11 in the width direction. The guide wall 47 guides the insertion direction by restricting movement of both side edges of the male lock arm portion 13 inserted into the male lock entry space 45. On both side edges of the male lock arm portion 13, sliding contact edge portions 49 that are in sliding contact with the guide wall 47 are provided.

次に、上記構成を有するロック構造の作用を説明する。
本実施形態に係るロック構造によれば、図３に示すように、オスロックアーム部１３の先端部３７が箱部１９のオスロック進入空間４５から挿入される。オスロック進入空間４５に挿入されたオスロックアーム部１３は、メスロックアーム部１１を外側に撓み変形させながら先端部３７がメス係止突起２３を通過する際、図３に二点鎖線で示すように、先端部３７自体が弾性変形するとともに、撓み規制部１５も閉じる方向に弾性変形する。オスロックアーム部１３の撓み規制部１５がメスロックアーム部１１のメス係止突起２３を通過して先端部３３に達すると、図４に示すように、オス係止面３１ａとメス係止面２３ａとが当接してオス係止部３１がメス係止突起２３に係止される。この際、同時に、オスロックアーム部１３の撓み規制部１５もメスロックアーム部１１の先端部３３に係合する。 Next, the operation of the lock structure having the above configuration will be described.
According to the lock structure according to the present embodiment, as shown in FIG. 3, the distal end portion 37 of the male lock arm portion 13 is inserted from the male lock entry space 45 of the box portion 19. The male lock arm portion 13 inserted into the male lock entry space 45 is shown by a two-dot chain line in FIG. 3 when the tip portion 37 passes through the female locking projection 23 while the female lock arm portion 11 is bent and deformed outward. In addition, the tip portion 37 itself is elastically deformed, and the bending restricting portion 15 is also elastically deformed in the closing direction. When the deflection restricting portion 15 of the male lock arm portion 13 passes through the female locking projection 23 of the female lock arm portion 11 and reaches the distal end portion 33, as shown in FIG. 4, the male locking surface 31a and the female locking surface The male locking part 31 is locked to the female locking projection 23 by abutting against the female locking protrusion 23a. At the same time, the bending restricting portion 15 of the male lock arm portion 13 is also engaged with the distal end portion 33 of the female lock arm portion 11.

このように、本実施形態のロック構造では、箱部１９に挿入されたオスロックアーム部１３の先端部３７がメスロックガイド面２１に沿って、メスロックアーム部１１の先端側に移動されると、オス係止部３１がメス係止突起２３に係止され、オスロックアーム部１３は、基端側に向かう方向への移動（離脱）が規制される。この際、図４に示すように、オスロックアーム部１３の先端部３７に設けられた撓み規制部１５が、メスロックアーム部１１の先端部３３に係合する。撓み規制部１５を先端部３３に係合したオスロックアーム部１３は、この撓み規制部１５によっても基端側に向かう方向への移動が規制される。そこで、オスロックアーム部１３は、従来のロック構造よりも１箇所多い２箇所で離脱が規制されてロックされる。   Thus, in the lock structure of the present embodiment, the distal end portion 37 of the male lock arm portion 13 inserted into the box portion 19 is moved along the female lock guide surface 21 to the distal end side of the female lock arm portion 11. Then, the male locking portion 31 is locked to the female locking protrusion 23, and the movement (detachment) of the male locking arm portion 13 in the direction toward the proximal end side is restricted. At this time, as shown in FIG. 4, the deflection regulating portion 15 provided at the distal end portion 37 of the male lock arm portion 13 engages with the distal end portion 33 of the female lock arm portion 11. The male lock arm portion 13 that engages the bending restriction portion 15 with the distal end portion 33 is also restricted from moving in the direction toward the proximal end side by the bending restriction portion 15. Therefore, the male lock arm 13 is locked by being restricted from being detached at two places, which is one place larger than the conventional lock structure.

更に、メスロックアーム部１１の先端部３３に係合した撓み規制部１５は、メスロックアーム部１１の撓みを規制する。即ち、撓み規制部１５は、形状係合である返し形状による係止力をメスロックアーム部１１の先端部３３に付与することで、オスロックアーム部１３のオスロック側面２９から離れる方向のメスロックアーム部１１の撓み変形を規制する。従って、ラップ代の減少が阻止されたオスロックアーム部１３は、係止力の減少が生じなくなる。これにより、ロックが２箇所になる係止力の増大に加え、係止力を増やした撓み規制部１５がオス係止部３１のオス係止面３１ａとメス係止突起２３のメス係止突起２３とのラップ代の減少も阻止するので、相乗的にロック強度が向上する。   Further, the bending restricting portion 15 engaged with the distal end portion 33 of the female lock arm portion 11 restricts the bending of the female lock arm portion 11. In other words, the bending restricting portion 15 applies a locking force due to a return shape, which is a shape engagement, to the distal end portion 33 of the female lock arm portion 11, so that the female lock in a direction away from the male lock side surface 29 of the male lock arm portion 13 is provided. The bending deformation of the arm portion 11 is restricted. Therefore, the male lock arm portion 13 in which the decrease in the lap cost is prevented does not cause a decrease in the locking force. Thereby, in addition to the increase in the locking force at which two locks are provided, the bending restricting portion 15 that has increased the locking force has the male locking surface 31a of the male locking portion 31 and the female locking projection of the female locking projection 23. Since the reduction of the lap cost with 23 is also prevented, the lock strength is synergistically improved.

また、本実施形態のロック構造では、撓み規制部１５の屈曲部３９は、メスロックアーム部１１の先端部３３を板厚方向で挟む先端挟持空間３５が形成されるように返し形状に折り返されている。そこで、オスロックアーム部１３の先端部３７に設けられた撓み規制部１５がメスロックアーム部１１の先端部３３を板厚方向に挟持することで、オスロックアーム部１３から離れる方向のメスロックアーム部１１の撓み変形を確実に規制することができる。即ち、オスロックアーム部１３に加わる離脱力の増大に伴って、撓み規制部１５による挟持力も増大する。その結果、ラップ代の減少がより大きい規制力によって抑制される。オス係止部３１とメス係止突起２３のラップ代を増大させる必要がないので、挿入性も悪化することがない。   Further, in the lock structure of the present embodiment, the bent portion 39 of the bending restricting portion 15 is folded back so as to form a distal end clamping space 35 that sandwiches the distal end portion 33 of the female lock arm portion 11 in the plate thickness direction. ing. Therefore, the female lock in the direction away from the male lock arm portion 13 is achieved by the bending restricting portion 15 provided at the distal end portion 37 of the male lock arm portion 13 holding the distal end portion 33 of the female lock arm portion 11 in the plate thickness direction. The bending deformation of the arm part 11 can be reliably controlled. That is, as the separation force applied to the male lock arm portion 13 increases, the clamping force by the bending restriction portion 15 also increases. As a result, the decrease in the lap cost is suppressed by a larger regulation force. Since it is not necessary to increase the lapping margin between the male locking portion 31 and the female locking projection 23, the insertion property does not deteriorate.

また、本実施形態のロック構造によれば、オスロックアーム部１３の先端部３７が基端側に向って折り返された屈曲部３９を有する撓み規制部１５によって、メスロックアーム部１１の先端部３３が挟持されてメスロックアーム部１１の撓み変形が規制される。オスロックアーム部１３の先端部３７を折り返すことで、オスロックアーム部１３の先端が、箱部１９への挿入に好都合な先細形状に容易に形成可能となる。また、この先細形状の形成によって、メスロックアーム部１１の先端部３３を挟持して該先端部３３に係止力を付与するための先端挟持空間３５を有する撓み規制部１５が同時に形成できる。これにより、メスロックアーム部１１の撓み変形を規制する撓み規制部１５の形状が、簡素な構造で、容易に、しかも、安価に製作可能となる。   Further, according to the lock structure of the present embodiment, the distal end portion of the female lock arm portion 11 is provided by the bending restricting portion 15 having the bent portion 39 in which the distal end portion 37 of the male lock arm portion 13 is folded back toward the proximal end side. 33 is clamped and the bending deformation of the female lock arm portion 11 is restricted. By folding back the distal end portion 37 of the male lock arm portion 13, the distal end of the male lock arm portion 13 can be easily formed into a tapered shape convenient for insertion into the box portion 19. Further, by forming the tapered shape, the bending restricting portion 15 having the tip holding space 35 for holding the tip portion 33 of the female lock arm portion 11 and applying a locking force to the tip portion 33 can be formed at the same time. Thereby, the shape of the bending restricting portion 15 for restricting the bending deformation of the female lock arm portion 11 can be manufactured easily and inexpensively with a simple structure.

更に、本実施形態のロック構造によれば、撓み規制部１５の屈曲部３９に設けられる補強リブ４１によって、屈曲部３９の強度が高められる。また、ロック構造によっては、撓み規制部１５が、曲げ性や先端挟持力の調整が必要となる。この場合、補強リブ４１の幅や突出高さ、長さ、形成範囲を適宜設定することにより、撓み規制部１５の全体形状を変更することなく、曲げ性や先端挟持力の調整が容易に可能となる。   Furthermore, according to the lock structure of the present embodiment, the strength of the bent portion 39 is increased by the reinforcing rib 41 provided on the bent portion 39 of the deflection regulating portion 15. Further, depending on the lock structure, the bending restricting portion 15 needs to adjust the bendability and the tip clamping force. In this case, by appropriately setting the width, protruding height, length, and forming range of the reinforcing rib 41, it is possible to easily adjust the bendability and the tip clamping force without changing the overall shape of the bending restricting portion 15. It becomes.

従って、本実施形態に係るロック構造によれば、挿入性を悪化させずに、ロック強度を向上させることができる。
なお、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。
例えば、上記実施形態における撓み規制部１５では、形状係合である返し形状による挟係止力をメスロックアーム部１１の先端部３３に付与することで、オスロックアーム部１３のオスロック側面２９から離れる方向のメスロックアーム部１１の撓み変形を規制したが、本発明はこれに限定されるものではない。
図５に示す本発明の他の実施形態に係るロック構造におけるオスロックアーム部１４の先端部３８のように、撓み規制部１６がメスロックアーム部１１の先端部３３に弾性接触するように折り返された屈曲部４０を有する構成とすることもできる。これにより、撓み規制部１６の先端は、弾性接触して摩擦係合による係止力をメスロックアーム部１１の先端部３３に付与することで、オスロックアーム部１４から離れる方向のメスロックアーム部１１の撓み変形を規制する。 Therefore, according to the lock structure according to the present embodiment, the lock strength can be improved without deteriorating the insertability.
In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.
For example, in the bending restricting portion 15 in the above embodiment, from the male lock side surface 29 of the male lock arm portion 13, the pinching and locking force due to the return shape that is shape engagement is applied to the distal end portion 33 of the female lock arm portion 11. Although the bending deformation of the female lock arm portion 11 in the separating direction is restricted, the present invention is not limited to this.
Like the distal end portion 38 of the male lock arm portion 14 in the lock structure according to another embodiment of the present invention shown in FIG. 5, the bending restricting portion 16 is folded back so as to elastically contact the distal end portion 33 of the female lock arm portion 11. It can also be set as the structure which has the bent part 40 made. Accordingly, the distal end of the bending restricting portion 16 is elastically contacted to apply a locking force due to frictional engagement to the distal end portion 33 of the female lock arm portion 11, so that the female lock arm in a direction away from the male lock arm portion 14. The bending deformation of the portion 11 is restricted.

１１…メスロックアーム部
１３…オスロックアーム部
１５…撓み規制部
１７…ボックス側壁（第１側壁）
１９…箱部
２３…メス係止突起
２５…ケース側壁（第２側壁）
２７…上端部（端部）
３１…オス係止部
３３…先端部
３５…先端挟持空間
３７…先端部
３９…屈曲部
４１…補強リブ DESCRIPTION OF SYMBOLS 11 ... Female lock arm part 13 ... Male lock arm part 15 ... Deflection control part 17 ... Box side wall (1st side wall)
19 ... Box 23 ... Female locking projection 25 ... Case side wall (second side wall)
27 ... Upper end (end)
31 ... Male locking portion 33 ... Tip portion 35 ... Tip clamping space 37 ... Tip portion 39 ... Bending portion 41 ... Reinforcing rib

Claims (4)

第１側壁に一体形成された箱部に基端側が接続され、自由端となる先端側にメス係止突起が形成されるメスロックアーム部と、
前記第１側壁と別体の第２側壁の端部に基端側が接続され、自由端となって前記箱部に挿入される先端部の近傍に形成されるオス係止部が前記メス係止突起に係止されるオスロックアーム部と、
前記オスロックアーム部の先端部に設けられ、前記オス係止部が前記メス係止突起に係止される前記メスロックアーム部と前記オスロックアーム部の相対位置において前記メスロックアーム部の先端部に係合することにより前記メスロックアーム部の撓みを規制する撓み規制部と、
を備えることを特徴とするロック構造。 A female lock arm portion, in which a proximal end side is connected to a box portion integrally formed on the first side wall, and a female locking projection is formed on a distal end side serving as a free end;
A base end side is connected to an end portion of the second side wall which is separate from the first side wall, and a male locking portion formed in the vicinity of a distal end portion which is inserted into the box portion as a free end is the female locking portion. A male lock arm portion locked to the protrusion;
The distal end of the female lock arm portion at a relative position between the female lock arm portion and the male lock arm portion, which is provided at the distal end portion of the male lock arm portion and the male locking portion is locked by the female locking projection. A bending restricting portion for restricting the bending of the female lock arm portion by engaging with the portion;
A lock structure comprising: 前記撓み規制部は、前記オスロックアーム部の先端部が基端側に向かって折り返された屈曲部を有していることを特徴とする請求項１に記載のロック構造。   2. The lock structure according to claim 1, wherein the bending restricting portion includes a bent portion in which a distal end portion of the male lock arm portion is folded back toward a proximal end side. 前記屈曲部は、前記メスロックアーム部の先端部を板厚方向で挟む先端挟持空間が形成されるように折り返されていることを特徴とする請求項２に記載のロック構造。   The lock structure according to claim 2, wherein the bent portion is folded back so as to form a distal end clamping space that sandwiches the distal end portion of the female lock arm portion in the plate thickness direction. 前記屈曲部の外側には、屈曲方向に沿う補強リブが突設されていることを特徴とする請求項２又は３に記載のロック構造。   The lock structure according to claim 2 or 3, wherein a reinforcing rib along the bending direction protrudes outside the bent portion.
JP2013099566A 2013-05-09 2013-05-09 Lock structure Active JP6105382B2 (en)

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JP7360620B2 (en) * 2019-11-19 2023-10-13 株式会社リコー Parts, cooling equipment and image forming equipment

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JPH1113718A (en) * 1997-06-27 1999-01-22 Nippon Seiki Co Ltd Lock structure of assembly part
JP2000245032A (en) * 1999-02-24 2000-09-08 Sumitomo Wiring Syst Ltd Lock structure for vehicle part and electric junction box
JP2006280032A (en) * 2005-03-28 2006-10-12 Sumitomo Wiring Syst Ltd Coupling structure for electric connection box
WO2010146023A1 (en) * 2009-06-20 2010-12-23 Weidmüller Interface GmbH & Co. KG Latching connection arrangement

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