JP4456923B2

JP4456923B2 - Lock box structure

Info

Publication number: JP4456923B2
Application number: JP2004135840A
Authority: JP
Inventors: 達哉中村
Original assignee: 美和ロック株式会社
Priority date: 2004-04-30
Filing date: 2004-04-30
Publication date: 2010-04-28
Anticipated expiration: 2024-04-30
Also published as: JP2005315002A

Description

この発明は、錠箱の構造（以下単に錠箱という）に係り、特に、デッドボルトを兼ねるラッチアセンブリーを有する錠箱において、閉扉時ラッチアセンブリーにかかる側圧に対する強度を向上させた錠箱に関する。 The present invention relates to a structure of a lock box (hereinafter, simply referred to as a lock box), and more particularly to a lock box having a latch assembly that also functions as a dead bolt and having improved strength against side pressure applied to the latch assembly when the door is closed. .

本出願人は、先に、後記特許文献１を以て、デッドボルトを兼ねるラッチアセンブリーを有する自動施錠錠を改良したものを提案した。 The present applicant has previously proposed an improved self-locking lock having a latch assembly that also serves as a dead bolt, as described later in Patent Document 1.

この自動施錠錠は、図１乃至図３に示すように、全体を符号１で示すラッチアセンブリーを錠箱内で水平方向に移動可能に案内すると共に、ラッチばね２（図１参照）の弾力により、斜面３（図２参照）を形成したラッチヘッド４が錠箱５のフロント板６から突出するように付勢する。 As shown in FIGS. 1 to 3, this automatic locking system guides a latch assembly, which is generally designated by reference numeral 1, so as to be movable in the horizontal direction within the lock box, and also provides elasticity of the latch spring 2 (see FIG. 1). Thus, the latch head 4 having the inclined surface 3 (see FIG. 2) is urged so as to protrude from the front plate 6 of the lock box 5.

そして、上記ラッチアセンブリー１は、次に述べるラッチボードの段部に係脱する制御レバー７（図１参照）によって施解錠され、シリンダ錠又はサムターンに連結されるダルマ８によって、錠箱５内に引込む方向に駆動される。 The latch assembly 1 is locked and unlocked by a control lever 7 (see FIG. 1) that is engaged with and disengaged from a stepped portion of the latch board, which will be described below. It is driven in the direction of drawing.

なお、図１に示す自動施錠錠の構造はこの発明と直接の関係はないから、更に詳細な説明は省略する。 Since the structure of the automatic lock shown in FIG. 1 is not directly related to the present invention, further detailed description is omitted.

一方、上記ラッチアセンブリー１は、断面が略コ字形のラッチボード９（図２及び図３参照）を有し、先端に前記ラッチヘッド４を装着したラッチ杆１１をラッチボードの前方（図において左方）からこれを貫通するように差し通し、その内端を止め輪１２（図２及び図３参照）によって固定してラッチアセンブリー１を構成する。 On the other hand, the latch assembly 1 has a latch board 9 (see FIGS. 2 and 3) having a substantially U-shaped cross section, and a latch rod 11 having the latch head 4 attached to the tip thereof is disposed in front of the latch board (in the figure). The latch assembly 1 is configured by inserting the inner end of the latch assembly 1 from the left side and fixing the inner end thereof with a retaining ring 12 (see FIGS. 2 and 3).

なお、図示の実施例においては、ラッチボード９に断面Ｌ字形の補強板１３（図３）がかしめつけられているが、この補強板はこの発明の必須の構成要件ではない。
特願２００４−１０５００４ In the illustrated embodiment, a reinforcing plate 13 (FIG. 3) having an L-shaped cross section is caulked to the latch board 9, but this reinforcing plate is not an essential component of the present invention.
Japanese Patent Application No. 2004-105004

前記した構成のラッチアセンブリー１は、通常、ラッチヘッド４をフロント板６（図１参照）の付番しない矩形のラッチ開口に摺動可能に嵌合させると共に、ラッチボード９の内端部に突設されたガイド片１４、１４（図２及び図３参照）を錠箱の側板に開口した図示しないガイド孔に摺動可能に係合させることにより、水平方向に移動可能に案内される。 In the latch assembly 1 having the above-described configuration, the latch head 4 is normally slidably fitted into an unnumbered rectangular latch opening of the front plate 6 (see FIG. 1), and at the inner end of the latch board 9. The projecting guide pieces 14 and 14 (see FIGS. 2 and 3) are slidably engaged with guide holes (not shown) opened in the side plates of the lock box, so that the guide pieces 14 and 14 are guided to be movable in the horizontal direction.

また、前記したようにラッチアセンブリー１はフロント板６から突出する方向に付勢されているから、ラッチヘッド４が飛び出てしまわないようにするため、図１及び図４に示すように、ラッチボード９の前板１５を上記ラッチヘッドが係合する付番しないラッチ開口より大きくし、この前板１５をフロント板６の裏面側に係止することにより、ラッチヘッド４のフロント板６からの突出量を規定する。 Further, as described above, since the latch assembly 1 is urged in the direction protruding from the front plate 6, in order to prevent the latch head 4 from popping out, as shown in FIGS. The front plate 15 of the board 9 is made larger than an unnumbered latch opening with which the latch head is engaged, and the front plate 15 is locked to the back surface side of the front plate 6 so that the latch head 4 is separated from the front plate 6. Define the amount of protrusion.

そして、図１に示すこの自動施錠錠の施錠時、前板１５とフロント板の裏板１６（図１参照）に開口した受穴（図４参照）１７とを嵌合させ、閉扉時ラッチアセンブリーに掛かる側圧を裏板１６を介してフロント板６に担持させる構造である。 When the automatic locking shown in FIG. 1 is locked, the front plate 15 and the receiving plate (see FIG. 4) 17 opened on the back plate 16 (see FIG. 1) of the front plate are fitted to each other, so that the latch assembly is closed. In this structure, the side pressure applied to the Lee is supported on the front plate 6 via the back plate 16.

しかしながら、ラッチボード９の側端縁と錠箱の側板との接触面積を少なくして摩擦抵抗を最小にするため、図４に示すように、前板１５の中央部を除く上下部分の幅が小さくなるように削られている。 However, in order to minimize the frictional resistance by reducing the contact area between the side edge of the latch board 9 and the side plate of the lock box, the width of the upper and lower portions excluding the central portion of the front plate 15 is as shown in FIG. It has been cut to become smaller.

そのため、図４から明らかなように、受穴１７の鉛直方向の開口端縁と前板１５の側端縁との接触長さが短くなり、ラッチアセンブリーの耐側圧強度がその分減少する、等未だ改良の余地がある。 Therefore, as apparent from FIG. 4, the contact length between the opening edge in the vertical direction of the receiving hole 17 and the side edge of the front plate 15 is shortened, and the lateral pressure resistance of the latch assembly is reduced accordingly. There is still room for improvement.

そこで、この発明は、簡単な構成でラッチアセンブリーの耐側圧強度を高めることができる錠箱を提供することを目的としている。 Therefore, an object of the present invention is to provide a lock box that can increase the lateral pressure resistance of the latch assembly with a simple configuration.

上記の目的を達成するため、請求項１に記載の発明は、断面形状が略コ字形に折り曲げられ、錠箱内においてフロント板に垂直な水平方向に移動可能に案内されたラッチボードの前板にラッチヘッドを装着してラッチアセンブリーを構成し、フロント板に開口したラッチ開口にこのラッチヘッドを係合させると共に、ラッチばねによってラッチヘッドがフロント板から突出する方向に付勢し、一方、ラッチボードの前板の中央部を除く上下部分の幅を狭めて前板の側端縁と錠箱の側板内面との摩擦を減じるようにしたものにおいて、フロント板に重合する裏板にラッチボードの前板と同形でフロント板のラッチ開口より大きい受穴を形成し、施錠時この受穴と前板とを形状係合させるようにして、従来のものと比較して長くなった前板の側端縁と受け穴の側方の開口端縁との接触部にラッチアセンブリーの側圧を分散させるようにし、以てラッチアセンブリーの耐側圧強度を高めるようにしたことを特徴とする。 In order to achieve the above object, the invention according to claim 1 is directed to a front plate of a latch board which is bent into a substantially U-shaped cross section and is guided so as to be movable in the horizontal direction perpendicular to the front plate in the lock box. The latch head is attached to the latch assembly, and the latch head is engaged with the latch opening that is opened in the front plate, and the latch head is urged by the latch spring in the direction protruding from the front plate, The width of the upper and lower parts excluding the central part of the front plate of the latch board is reduced to reduce the friction between the side edge of the front plate and the inner surface of the side plate of the lock box. The front plate has the same shape as the front plate, but is larger than the latch opening on the front plate. Side edge And receiving so as to distribute the lateral pressure of the latch assembly to the contact portion between the opening edge of the side of the hole, characterized in that so as to increase the resistance to lateral pressure strength of the latch assembly Te following.

上記のように構成された請求項１に記載の発明は、扉を室内側及び室外側の何れの方向に押動したときでも、ラッチアセンブリーの前板の何れかの側端縁が裏板に開口した受穴の開口端縁にその全長にわたって接触するから、従来のものと比較して接触長さが長くなり、したがって接触部の単位長さあたりの側圧が小さくなるので、ラッチアセンブリーの耐側圧強度が増大する、という所期の効果を奏する。 According to the first aspect of the present invention, the side edge of the front plate of the latch assembly is the back plate even when the door is pushed in either the indoor side or the outdoor side. Since the contact length is longer than that of the conventional one, and the lateral pressure per unit length of the contact portion is reduced. There is an expected effect that the lateral pressure strength is increased.

また、受穴を加工するポンチの断面形状を変えるだけでよいから、実施が極めて容易である、等種々の効果を奏する。 Moreover, since it is only necessary to change the cross-sectional shape of the punch for processing the receiving hole, there are various effects such as extremely easy implementation.

錠箱における裏板の受穴の形状を少し変更するだけで、ラッチアセンブリーの耐側圧強度を増大させることができた。 The lateral pressure resistance of the latch assembly could be increased by changing the shape of the receiving hole of the back plate in the lock box.

以下、この発明の実施例を図５を参照して説明する。
図５において符号１６は裏板を、符号１７は受穴を夫々示し、この受穴１７の形状は図４に示す前板１５の形状と同形に設定されている。 An embodiment of the present invention will be described below with reference to FIG.
5, reference numeral 16 denotes a back plate, and reference numeral 17 denotes a receiving hole. The shape of the receiving hole 17 is set to be the same as the shape of the front plate 15 shown in FIG.

そのため、施錠時図１に示すようにラッチアセンブリー１がフロント板６から最大限突出して前板１５がフロント板の裏面に当接したとき、前板１５と受穴１７とが形状係合する。 Therefore, when the latch assembly 1 protrudes from the front plate 6 to the maximum and the front plate 15 comes into contact with the back surface of the front plate as shown in FIG. 1 when locked, the front plate 15 and the receiving hole 17 are in shape engagement. .

そして、ラッチアセンブリー１が受ける側圧は、従来のものと比較して長くなった前板の側端縁と受穴の側方の開口端縁との接触部に分散されるので、ラッチアセンブリーの耐側圧強度が増大することは明らかである。 The side pressure received by the latch assembly 1 is distributed to the contact portion between the side edge of the front plate which is longer than the conventional one and the opening edge on the side of the receiving hole. It is clear that the lateral pressure strength of the increases.

なお、受穴１７の開口端縁の内水平な部分は側圧の担持に関与しないから、図示の実施例では、図１に示すように、受穴１７の上方の開口端縁と前板１５との間に隙間があるが、この場合も同形の概念に含めるものとする。 Since the inner horizontal portion of the opening edge of the receiving hole 17 is not involved in carrying the lateral pressure, in the illustrated embodiment, as shown in FIG. 1, the opening edge above the receiving hole 17 and the front plate 15 There is a gap between them, but this case is also included in the concept of the same shape.

また、作動を円滑にするため、受穴１７と前板１５との間に若干の隙間の存在が必要であるから、この隙間がある場合も形状係合の概念に含めるものとする。 Further, in order to make the operation smooth, it is necessary to have a slight gap between the receiving hole 17 and the front plate 15. Therefore, this gap is included in the concept of shape engagement.

自動施錠錠の一部断面側面図。The partial cross section side view of an automatic locking lock. ラッチアセンブリーの平面図。The top view of a latch assembly. ラッチアセンブリーの側面図。The side view of a latch assembly. 前板の正面図。The front view of a front board. 裏板の一部正面図。The partial front view of a back board.

Explanation of symbols

１ラッチアセンブリー
２ラッチばね
４ラッチヘッド
５錠箱
６フロント板
９ラッチボード
１１ラッチ杆
１４ガイド片
１５前板
１６裏板
１７受穴 DESCRIPTION OF SYMBOLS 1 Latch assembly 2 Latch spring 4 Latch head 5 Lock box 6 Front board 9 Latch board 11 Latch rod 14 Guide piece 15 Front board 16 Back board 17 Receiving hole

Claims

A latch head is mounted on the front plate of the latch board, which is bent in a substantially U-shaped cross section and guided to move horizontally in the lock box in the horizontal direction perpendicular to the front plate. The latch head is engaged with the opened latch opening, and the latch head is biased in a direction protruding from the front plate by the latch spring, while the width of the upper and lower portions excluding the center portion of the front plate of the latch board is narrowed. In the case where friction between the side edge of the front plate and the inner surface of the side plate of the lock box is reduced, a receiving hole which is the same shape as the front plate of the latch board and is larger than the latch opening of the front plate is formed on the back plate overlapping the front plate. And
At the time of locking, the receiving hole and the front plate are engaged with each other, and latched at the contact portion between the side edge of the front plate and the opening edge on the side of the receiving hole, which is longer than the conventional one. A structure of a lock box characterized in that the side pressure of the assembly is dispersed, thereby increasing the side pressure resistance of the latch assembly .