JP7137284B2

JP7137284B2 - indoor latch lock

Info

Publication number: JP7137284B2
Application number: JP2018038131A
Authority: JP
Inventors: 納口利彦
Original assignee: 技研金物株式会社
Priority date: 2018-03-05
Filing date: 2018-03-05
Publication date: 2022-09-14
Anticipated expiration: 2038-03-05
Also published as: JP2019152035A

Description

本発明は、レバーやノブの操作により反転ラッチを操作する室内用ラッチ錠に関する。 The present invention relates to an indoor latch lock that operates a reversing latch by operating a lever or knob.

例えば特許文献１、２に見られるように見られるように室内錠としてノブやレバーなどの操作部材により反転ラッチを回動、移動させて開錠する箱形ラッチ錠が提案されている。 For example, as seen in Patent Documents 1 and 2, a box-type latch lock has been proposed as an indoor lock that unlocks by rotating and moving a reversing latch with an operating member such as a knob or lever.

特開2000-54703号公報JP-A-2000-54703 特開2017-71971号公報JP 2017-71971 A 特開2007-205112号公報Japanese Patent Application Laid-Open No. 2007-205112

しかしながら、構造が複雑でサイズが大型であるという問題がある。
本発明は、このような問題に鑑みてなされたものであって、その目的とするところは、小型で、操作部材の操作量を抑えることができる室内用ラッチ錠を提供することである。 However, there is a problem that the structure is complicated and the size is large.
SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to provide an indoor latch lock which is small in size and capable of suppressing the amount of operation of an operation member.

このような課題を解決するために本発明は、操作部材の回動により常時施錠方向に付勢された操作棹と、ラッチ背面とラッチ傾斜面とを有し常時ラッチ背面側に付勢されて回動可能に前記操作棹の端部に設けられた反転ラッチと、前記ラッチ傾斜面を案内する第二のガイド面と、施錠状態では全体が前記ラッチ背面に接し、かつ前記第二のガイド面よりも短くて前記ラッチ背面の後端部を露出させる第一のガイド面とから構成されている。 In order to solve such problems, the present invention has an operation rod which is always urged in the locking direction by rotation of an operation member, a latch back surface and a latch inclined surface, and which is always urged toward the latch back surface. a reversing latch rotatably provided at the end of the operating rod; a second guide surface for guiding the latch inclined surface; and a first guide surface that is shorter than the first guide surface and exposes the rear end of the latch back surface.

操作棹の移動により反転ラッチの拘束が解除されて容易に回動可能となるから操作棹の少ない移動、つまりノブの少ない操作量で開錠出来るとともに操作棹の先端に反転ラッチを設けるという簡単な構造で実現できる。 By moving the operating rod, the restraint of the reversing latch is released so that it can be easily rotated. It can be realized by structure.

図（Ａ）（Ｂ）は、それぞれ本発明の一実施例を施錠時の形態で示す縦断面図と横断面図。1A and 1B are a longitudinal sectional view and a transverse sectional view, respectively, showing an embodiment of the present invention in a locked state; FIG. 図（Ａ）（Ｂ）は、それぞれ本発明の一実施例を開錠初期の形態で示す縦断面図と横断面図。1A and 1B are a longitudinal sectional view and a transverse sectional view, respectively, showing an embodiment of the present invention in an initial state of unlocking; FIG. 本発明の主要部材の組み立て斜視図。1 is an assembled perspective view of the main members of the present invention; FIG. 図（Ａ）（Ｂ）は、それぞれ施錠状態及び開錠初期の状態で示す断面図。Figures (A) and (B) are cross-sectional views showing the locked state and the initial state of unlocking, respectively.

図１（Ａ）、（Ｂ）、図２（Ａ）、（Ｂ）、及び図３は、本発明の一実施例を示すものであって、前板１ａを備えた筒形外装ケース構成部材１、１’に収容され、角孔２ａに挿入されたノブ、ハンドルにより回動されるハンドル操作カム２により進退する操作棹は、スライド片３とラッチ保持体４により構成されている。 1(A), (B), FIGS. 2(A), (B), and 3 show an embodiment of the present invention, comprising a cylindrical outer case constituent member having a front plate 1a. 1 and 1', a knob inserted into a square hole 2a and an operation rod advanced and retracted by a handle operation cam 2 rotated by a handle are composed of a slide piece 3 and a latch holder 4. As shown in FIG.

ラッチ保持体４の先端は、ラッチ保持体収容凹部５ａに反転ラッチ５が軸ピン６により回動可能に設けられている。反転ラッチ５は、枠体７の受座金具８の阻止面８ａに並行な面（以下、ラッチ背面という）５ｂと、受座金具８の阻止面８ａに傾斜して当接する面（以下、ラッチ傾斜面という）５ｃとを有し、捻りばね９により後述の保持ブッシュ１０と共同してラッチ背面５ｂが操作棹（ラッチ保持体４）の移動方向に並行となるように付勢されている。 At the tip of the latch holder 4, a reversing latch 5 is rotatably provided by a shaft pin 6 in a latch holder housing recess 5a. The reversing latch 5 has a surface 5b (hereinafter referred to as latch back surface) parallel to the blocking surface 8a of the receiving metal fitting 8 of the frame 7 and a surface (hereinafter referred to as latch The latch back surface 5b is urged by a torsion spring 9 in cooperation with a holding bush 10, which will be described later, so that the latch back surface 5b is parallel to the moving direction of the operation rod (latch holder 4).

さらに反転ラッチ５の後端５ｄ（図３）は、ラッチ傾斜面５ｃに作用する力を受けて保持ブッシュ１０の内面で容易に回動するように断面円形に形成するのが望ましい。 Further, the rear end 5d (FIG. 3) of the reversing latch 5 is desirably formed to have a circular cross-section so that it can be easily rotated on the inner surface of the holding bush 10 by receiving the force acting on the latch inclined surface 5c.

これら移動部材（反転ラッチ、ラッチ保持体、スライド片）は、反転ラッチ５の後端近傍に位置しラッチ保持体４に形成されたばね受け座４ａと筒形外装ケース構成部材１’の突起との間に装填されたコイルバネ１１により反転ラッチ側、つまり施錠側（図中、左方側）に突出するように常時付勢されている。 These moving members (reversing latch, latch holder, slide piece) are located near the rear end of the reversing latch 5 and are formed between the spring bearing seat 4a formed on the latch holder 4 and the protrusion of the cylindrical exterior case constituent member 1'. A coil spring 11 is inserted between them and constantly urges them to protrude toward the reverse latch side, that is, the locking side (left side in the drawing).

また反転ラッチ５の移動領域には反転ラッチ５の移動をガイドするとともに、施錠状態では反転ラッチ５のラッチ背面５ｂの全体と接して施錠力を保持する一方、ノブやレバーの回動操作θにより反転ラッチ５が若干後退した場合に（図２Ｂ）ラッチ背面５ｂの後端５ｄが突出、つまり露出する程度の長さの第一面１０ａと、ラッチ傾斜面５ｃをガイドする第二面１０ｂと備えた保持ブッシュ１０が装填されている。なお、符号１０ｃは側方ガイド面である。またこの実施例では第一面１０ａと第二面１０ｂを保持ブッシュに形成しているが、筒形外装ケース構成部材１に直接形成してもよい。 In addition, the movement of the reversing latch 5 is guided in the movement area of the reversing latch 5, and in the locked state, the entire latch back surface 5b of the reversing latch 5 is contacted to maintain the locking force. When the reversing latch 5 is slightly retracted (FIG. 2B), the rear end 5d of the latch back surface 5b protrudes, that is, it has a first surface 10a with a length that is exposed, and a second surface 10b that guides the latch inclined surface 5c. A holding bush 10 is loaded. In addition, the code|symbol 10c is a side guide surface. Also, in this embodiment, the first surface 10a and the second surface 10b are formed on the retaining bush, but they may be formed directly on the tubular exterior case component 1. FIG.

なお、この実施例では特許文献３にみられるようにバックセット、つまりスライド片３とラッチ保持体４とを係合させたときの軸長を調整できるように軸方向に２つの切り替え溝が形成されている。 In this embodiment, as shown in Patent Document 3, two switching grooves are formed in the axial direction so that the backset, that is, the axial length when the slide piece 3 and the latch holder 4 are engaged with each other can be adjusted. It is

すなわち、スライド片３の先端の貫通孔３ａをラッチ保持体４の２つの凹部４ｂ、４ｃのいずれかに挿入するかにより２つの部材の全体を長短に調整できる。スライド片３の貫通孔３ａはラッチ保持体４の後端が挿通可能(a＜b)で、かつ二者を相対的に９０度ほど変位させると凹部４ｂ、４ｃのいずれかの位置にセット、固定できるように構成されている。 That is, by inserting the through hole 3a at the tip of the slide piece 3 into one of the two recesses 4b and 4c of the latch holder 4, the length of the two members can be adjusted as a whole. The rear end of the latch holder 4 can be inserted through the through hole 3a of the slide piece 3 (a<b), and when the two are displaced relative to each other by about 90 degrees, the through hole 3a is set in either of the concave portions 4b and 4c. configured to be fixed.

この実施例において施錠状態（図４（Ａ））では、反転ラッチ５が枠７の受座金具８の阻止孔８ａの縁と軸ピン６との距離Ｌ１が極めて短く、かつラッチ背面５ｂの後端が保持ブッシュ１０の第一面１０ａに接し回動が阻止されているため、扉１２に作用する開放方向の力Ｆによる回動が確実に防止されている。なお、図中符号１３は、スライド片３を施錠方向に付勢するコイルバネである。 In this embodiment, in the locked state (FIG. 4(A)), the reversing latch 5 has a very short distance L1 between the edge of the blocking hole 8a of the receiving metal fitting 8 of the frame 7 and the shaft pin 6, and the rear side of the latch back surface 5b is closed. Since the end is in contact with the first surface 10a of the holding bush 10 and rotation is prevented, the rotation due to the force F acting on the door 12 in the opening direction is reliably prevented. Reference numeral 13 in the drawing denotes a coil spring that biases the slide piece 3 in the locking direction.

このように構成された室内用ラッチ錠において、施錠状態（図４の状態）で開錠すべくレバー、ノブなどの操作部材を回動させると、反転ラッチ５のラッチ背面５ｂの後端が保持ブッシュ１０の第一の面１０ａから若干突出する（図４（Ｂ）の状態）。これにより反転ラッチ５は、保持ブッシュ１０の第一の面１０ａによる拘束を解かれ軸ピン６を中心に回動が可能となる。 In the indoor latch lock configured as described above, when an operation member such as a lever or a knob is rotated to unlock in the locked state (state shown in FIG. 4), the rear end of the latch back surface 5b of the reversing latch 5 is held. It protrudes slightly from the first surface 10a of the bush 10 (state shown in FIG. 4(B)). As a result, the reversing latch 5 is released from the restraint by the first surface 10a of the holding bush 10 and becomes rotatable around the shaft pin 6. As shown in FIG.

同時に受座金具８の縁と軸ピン６との距離Ｌ２が施錠時よりも拡大するので扉１２を開く力Ｆにより反転ラッチ５が捻りバネ９の付勢力に抗して受座金具８の縁と軸ピン６との距離Ｌ２が拡大しているため容易に回動しかつ後退するため受座金具８から脱出し開錠される。 At the same time, the distance L2 between the edge of the receiving metal fitting 8 and the shaft pin 6 is increased compared to when it is locked, so that the force F for opening the door 12 pushes the reversing latch 5 against the urging force of the torsion spring 9 and pushes the edge of the receiving metal fitting 8. Since the distance L2 between the shaft pin 6 and the shaft pin 6 is increased, it can be easily rotated and retreated, so that it escapes from the receiving metal fitting 8 and is unlocked.

これにより、操作棹の直線移動だけで受座金具からラッチを退避させるよりも、操作棹の移動量、つまりノブ、レバーの操作量が少なくても開錠できる。すなわち、反転ラッチ５は、回動と直線運動との２種類の変位により受座金具８から退避するのでノブやレバーの操作量が少なくなる。 As a result, the lock can be unlocked even if the amount of movement of the operation rod, that is, the amount of operation of the knob and lever is smaller than when the latch is retracted from the receiving metal fitting by linear movement of the operation rod. That is, since the reversing latch 5 is retracted from the receiving metal fitting 8 by two types of displacement, ie, rotation and linear motion, the amount of operation of the knobs and levers is reduced.

開放状態の扉１２を閉めると、通常のラッチ錠のラッチと同様に反転ラッチ５のラッチ傾斜面５ｃが受座金具８のガイド面８ｂに押され、これにより発生した力のうち進退方向の分力を受けてバネ１１の付勢力に抗して反転ラッチ５が後退する。これにより反転ラッチ５が筒形外装ケース構成部材１に没入して扉１２が閉まり施錠状態となる。 When the open door 12 is closed, the inclined latch surface 5c of the reversing latch 5 is pushed by the guide surface 8b of the receiving metal fitting 8 in the same manner as the latch of a normal latch lock. Upon receiving the force, the reversing latch 5 retreats against the biasing force of the spring 11.例文帳に追加As a result, the reversing latch 5 is retracted into the cylindrical exterior case component 1, and the door 12 is closed and locked.

１、１’ 筒形外装ケース構成部材２ハンドル操作カム３スライド片４ラッチ保持体５反転ラッチ５ｂラッチ背面５ｃラッチ傾斜面６軸ピン７枠体８受座金具９捻りばね１０保持ブッシュ１１コイルバネ Reference Signs List 1, 1' Cylindrical exterior case constituent member 2 Handle operating cam 3 Slide piece 4 Latch holder 5 Reversing latch 5b Latch rear surface 5c Latch inclined surface 6 Axial pin 7 Frame body 8 Receiving metal fitting 9 Torsion spring 10 Holding bush 11 Coil spring

Claims

操作部材の回動により常時施錠方向に付勢された操作棹と、ラッチ背面とラッチ傾斜面とを有し常時ラッチ背面側に付勢されて回動可能に前記操作棹の端部に設けられた反転ラッチと、前記ラッチ傾斜面を案内する第二のガイド面と、施錠状態では全体が前記ラッチ背面に接し、かつ前記第二のガイド面よりも短くて前記ラッチ背面の後端部を露出させる第一のガイド面とから構成された室内用ラッチ錠。 It has an operation rod always biased in the locking direction by the rotation of the operation member, a latch back surface and a latch inclined surface, and is provided at the end of the operation rod so as to be rotatable while always being biased toward the latch back surface. a second guide surface that guides the latch inclined surface; and a second guide surface that guides the latch slant surface. an interior latch lock comprising a first guide surface for

前記反転ラッチは、その後端側に形成された凹部に捻りバネと前記操作棹の一部を収容して回動可能に前記操作棹に設けられている請求項１に記載の室内用ラッチ錠。 2. The indoor latch lock according to claim 1, wherein said reversing latch is rotatably provided on said operating rod with a torsion spring and a part of said operating rod accommodated in a recess formed on the rear end side thereof.

前記第一のガイド面及び前記第二のガイド面は、ブッシュに形成されていて筒形外装ケース構成部材に挿入されている請求項１に記載の室内用ラッチ錠。 2. The indoor latch lock according to claim 1, wherein said first guide surface and said second guide surface are formed on a bushing and inserted into a cylindrical outer case component.

前記操作棹、及び前記反転ラッチが前記筒形外装ケース構成部材に収容されている請求項３に記載の室内用ラッチ錠。 4. The indoor latch lock according to claim 3 , wherein said operating rod and said reversing latch are accommodated in said tubular exterior case constituent member.