JP2004339851A - Crime-preventing thumb-turn lock cover device - Google Patents

Crime-preventing thumb-turn lock cover device Download PDF

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Publication number
JP2004339851A
JP2004339851A JP2003139778A JP2003139778A JP2004339851A JP 2004339851 A JP2004339851 A JP 2004339851A JP 2003139778 A JP2003139778 A JP 2003139778A JP 2003139778 A JP2003139778 A JP 2003139778A JP 2004339851 A JP2004339851 A JP 2004339851A
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JP
Japan
Prior art keywords
thumb
turn
cover
guide support
support member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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JP2003139778A
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Japanese (ja)
Inventor
Michiyuki Tamura
田村理志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miwa Lock KK
Miwa Lock Co Ltd
Original Assignee
Miwa Lock KK
Miwa Lock Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miwa Lock KK, Miwa Lock Co Ltd filed Critical Miwa Lock KK
Priority to JP2003139778A priority Critical patent/JP2004339851A/en
Publication of JP2004339851A publication Critical patent/JP2004339851A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a thumb-turn lock cover which does not easily move upward unless it is opened with more than two fingers pressing it down. <P>SOLUTION: The crime-preventing thumb turn lock cover device is fixed to surround a thumb-turn lock on an inner wall of a door. Furthermore, it is composed of a guide support member with a first engaged portion on its right- and left-side frame sections and an engaging portion to engage with the first engaged portion. Moreover, when holding up the thumb turn cover with the fingers to slide upward, a knob portion for a knob operating board for the thumb-turn appears. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、戸(開閉戸、引戸など)の錠前のサムターン用防犯カバー具に関する。
【0002】
【従来の技術】
従来、内側の引戸に取り付けられる錠前の操作具は、例えばケース状の取り付け枠と、この取り付け枠に上下方向にスライド自在に装着され、かつ、取り付け枠の垂直案内長孔から突出する摘み部を有する摘み操作板(「サムターン操作板」)とから成り、前記摘み操作板には、内側の引戸に設けられた引戸錠の施錠片(例えば鎌片)を施錠又は解錠方向へ作動させるための駆動軸等が設けられていた。
【0003】
上記構成に於いて、内外の引戸が鎌片を介して施錠されている場合、泥棒が引戸錠の鎌片を後退させようと不正解錠をする場合には、ドリルを用いて戸に孔を開ける例もあるが、例えば重なり合った内側と外側の框の接合面に硬いバーを差込み、無理やりに隙間を作る。
【0004】
そして、先端部が鉤状の針金部材(泥棒の道具の一つ)を隙間から差込み、引戸錠を構成する摘み操作板の摘み部に引っ掛けようとする。このような場合、針金部材の先端部が摘み部に引っ掛かると、泥棒は摘み部を介して上手に摘み操作板を上方に持ち上げる。そうすると、鎌片が摘み操作板のスライド、連動部材の移動を介して後退する。
【0005】
したがって、摘み操作板を単純に持ち上げる又は押し下げるという操作により鎌片が解錠する引戸錠は、不正解錠される確立が高いという問題点がある。このような問題点を解決する先行技術文献として、特開2003−56218号公報がある。
【0006】
【発明が解決しようとする課題】
本発明の第1の目的は、泥棒が戸に孔を開け、又は戸の隙間から針金部材などを利用して摘み操作板を操作し、錠前の鎌片を解錠状態にすることを防止する防犯カバー具を提供することである。第2の目的は、防犯カバー具のサムターンカバーを2本以上の指で押さえながら開けようとしない限り、簡単に上方へ移動しないことである。第3の目的は、防犯カバー具のサムターンカバーを所要の位置まで持ち上げた場合に於いて、サムターンカバーから指を離しても、サムターンカバーはそのまま開いた状態に停止していることである。第4の目的はサムターンカバーを案内支持部材に簡単に取り付けることができる反面、一旦、案内支持部材にサムターンカバーを取り付けた場合に、該カバーを簡単に取り外すことができないことである。第5の目的は、摘み部が上下方向へと移動する縦長のサムターンもカバーすることができることである。
【0007】
【課題を解決するための手段】
本発明のサムターン用防犯カバー具は、サムターンを囲むように戸の内壁面に固定され、かつ、左右の側枠部に第1被係合部を有する案内支持部材と、この案内支持部材の前記第1被係合部に係合する係合部を有し、かつ、指で持ち上げて上方へスライドさせると、前記サムターンの摘み操作板の摘み部が現れるサムターンカバーとから成ることを特長とする。
【0008】
【発明の実施の形態】
図1乃至図13は、本発明の一実施例を示す各説明図である。1は戸(開閉戸、引戸など)の錠前のサムターン用防犯カバー具(以下、単に「防犯カバー具」という。)である。
【0009】
防犯カバー具1は、図1で示すように内側の引戸2の内壁面(例えば縦框)2aに、サムターン3全体をカバー状態で囲むように固定的に取り付けられる。錠前の一例としての引戸錠の構成は特に図示しないが、一般に内側引戸2の縦框内に設けられ、かつ、連動部材に軸支された施錠片(鎌片)を有する。施錠片は相手方の外側引戸に設けた受け金具に掛合する。本実施例では引戸錠そのものは発明の特定要件ではないので、詳細な説明は割愛する。
【0010】
3は錠前の施錠片を施錠又は解錠方向へ動かすためのサムターンで、このサムターン3も引戸2の内壁面(例えば縦框)2aに固着具4を介して取り付けられている。サムターン3の構成部材を大まかに区分けすると、任意形状のケース本体5と、このケース本体5内にスライド自在に内装され、かつ、ケース本体5の案内窓5aから突出する摘み部6aを有する摘み操作板6と、この摘み操作板6に連動する施錠片とから構成されている。
【0011】
そこで、本発明の防犯カバー具1の構成について説明する。防犯カバー具1は、図2で示すように、サムターン3の一部又は全体(本実施例ではケース本体5の全体)を囲むように戸2の内壁面2aに固定され、かつ、左右の側枠部に第1被係合部8,8を有する案内支持部材7と、この案内支持部材7の前記第1被係合部8,8に係合する小突起状の係合部9a,9bを有し、かつ、指で持ち上げて上方へスライドさせると、前記サムターン3の摘み操作板6の摘み部6aが現れる透明或いは半透明のサムターンカバー10とから成る。
【0012】
まず、案内支持部材7について説明する。案内支持部材7は、縦長のサムターン3の下端部3aをカバーするケース状支持部11と、この支持部11の左右の側壁11a,11aに、左右の側枠部12a,12aがそれぞれ連設する枠状の案内支持部12とから成る。
【0013】
案内支持部12は、端面L型の上枠部12bを有する必要はないが、本実施例では、案内支持部12を強靭にする、上枠部12bを介して引戸2の内壁面2aに強固に固定する等の理由から、上枠部12bを端面L型或いは断面L型状に形成している。したがって、案内支持部12の左右の側枠部12a,12aの上部には、前記上枠部12bと平行な補強リブを設けても良い。
【0014】
しかして、前記下方のケース状支持部11は、上壁と後壁(背面の壁)を有していない。支持部11の左右側壁11a,11aの上端部には、第2被係合部(小孔、小溝など)13,13が形成されている。また左右側壁11a,11aは、上端部を除き、強靭にするために肉厚に形成されている。
【0015】
一方、案内支持部12の左右側枠部12a,12aは、柱状に形成された左右一対の側壁部に相当する。本実施例では、これら左右側枠部12a,12aの外壁面に、前述した第1被係合部としての縦溝8が形成されている。
【0016】
14は左右の側枠部12a,12aの上端部にそれぞれ形成された左右一対の切欠部で、これらの切欠部14,14は前記縦溝8,8にそれぞれ連通する。これらの切欠部14,14は、サムターンカバー10の左右の小突起状係合部9,9をそれぞれ通す幅を有している。
【0017】
ところで、前記縦溝8,8内の上部位置には、外方向に飛び出た断面山形或いは半円弧状(本実施例では断面山形)支持突起15がそれぞれ形成されている。これらの支持突起15は、図11で示すように、下方の傾斜面15aと、上方の支持傾斜面15bとを有している。
【0018】
次にサムターンカバー10について説明する。サムターンカバー10は、図1で示すようにケース状に形成されているものの、図10の概略縦断面で明らかなように後壁(背面の壁)と下壁とを有しない。そこで、各壁に符号を付すると、10aは前壁、10b,10bは左右の側壁、10cは上壁である。
【0019】
しかして、前記左右側壁10b,10bの下端部は、案内支持部材7の支持部11の上端部が段差状に形成されていることから、その段差状の上端支持面16にぴったりと乗っかる(適合する)ように段差状に形成されている。
【0020】
また、左右側壁10b,10bの下端縁には、前述した案内支持部材7の第2被係合部13,13とそれぞれ同時に係脱する左右一対の係合爪片20,20が舌片状に突出している。これらの係合爪片20,20又は左右の側壁10b,10bの下端部は、材質自体により、弾性復帰変形機能を有している。
【0021】
さらに、本実施例では、左右側壁10b,10bの下端部の内壁面に、案内支持部材7の第1被係合部(縦溝)8,8にそれぞれスライド係合する複数個(例えば合計4個)の係合部9a,9bが小突起状に形成されている。これらの小突起状係合部9a,9bは、上下方向に所要間隔離間して位置していると共に、案内支持部材7の切欠部14,14から縦溝8,8内へと入り込むことが可能である。
【0022】
上記構成に於いて、図2〜図5はサムターンカバー10を閉じた状態の概略説明図である。この時サムターンカバー10の係合爪片20,20は、案内支持部材7の第2被係合部13,13に係合し、またサムターンカバー10の下端面が案内部材7の支持部11の上端支持面16にぴったりと合っていることから、泥棒が、例えば戸2の隙間から針金部材を入れてサムターンカバー10を開けようとしても、針金部材の鉤状先端部はサムターンカバー10の下端面等に引っ掛からない。
【0023】
したがって、サムターンカバー10を開けることができない。泥棒がサムターンカバー10を開けようと戸の外から道具を操作しても、案内支持部材7の支持部11の側壁11a、底壁11b、前壁11c等に当たるだけである。
【0024】
これに対して、居住者がサムターンカバー10を開けようとする場合には、図9で示すようにサムターンカバー10の左右の側壁10b,10bを、2本以上の指で摘み押圧する。
【0025】
そうすると、左右側壁10b,10bの下端部は、図9で示すように弾性復帰変形機能を有していることから内側に多少変位し、左右の係合爪片20,20は、第2被係合部13,13から外れる。そこで、そのままサムターンカバー10を持ち上げると、サムターンカバー10は複数個の係合部9を介して案内支持部材7の縦溝8をスライドする。
【0026】
図9で示すように指で摘んでサムターンカバーを持ち上げ、図10で示すようにサムターン3の摘み部6aが完全に現れた所あるいはその後に、サムターンカバー10の上位の係合部9aは案内支持部材7の支持突起15の下方傾斜面15aを乗り越える。
【0027】
そうすると、図11で示すように、サムターンカバー10の上位の係合部9aは前記支持突起15の上方傾斜支持面15bに乗っかるので、該サムターンカバーは自然落下しない。
【0028】
サムターンカバー10を閉じる時は、サムターンカバー10の上壁10cを押し下げると、図11の態様と逆になるから、ストレートにスライド落下し、サムターンカバー10の係合爪片20,20は、案内支持部材7の第2被係合部13に同時に係合する。この場合係合爪片20,20は、内側に変位した後に第2被係合部13に係合する。
【0029】
図12及び図13は、サムターンカバー10を案内支持部材7に嵌め込む場合の説明図である。本実施例では、案内支持部材7の上端部に左右一対の切欠部14,14が形成されているので、そこから、まずサムターンカバー10の下位の係合部9bを縦溝8,8へと嵌め込み(図12)、次に上位の係合部9aを縦溝8,8へと嵌め込む。そうすると、サムターンカバー10と案内支持部材7は、一つの防犯カバー具1となる。
【0030】
防犯カバー具1を戸2の内壁面2aに固定すると、そのサムターンカバー10は、図12で示すように内壁面2a側に傾倒させることができないから、一旦、防犯カバー具1を戸2の内壁面2aに固定すると、サムターンカバー10を案内支持部材7からそう簡単には取り外すことができない。
【0031】
【実施例】
サムターンカバー10の左右側壁10b,10bの下端部は、弾性変形機能及び弾性復帰機能を有する方がベターであるから、サムターンカバー10は合成樹脂材で形成されている。案内支持部材7の第2被係合部13,13とそれぞれ同時に係脱する左右一対の係合爪片20,20は、一個でも良い。また前記係合爪片20の形状や設ける箇所に関しては、任意に設計変更することができる。サムターンカバー10の形態についは特に限定するものではない。
【0032】
さらに、図14で示すように、サムターンカバー10Aの左右の側壁10a,10aの下端部を指で摘んで押圧した時に於いて、該下端部(特に縁部)が容易に内側に変位するように合計2のスリット(細隙)25,25を適宜に形成しても良い。このサムターンカバー10Aでは、サムターンカバー10Aの前壁10aと左右の側壁10b,10bとの境界部分に相当する、或いは境界付近の下端部に縦方向の短いスリット25,25を形成してある。
【0033】
【発明の効果】
以上の説明から明らかなように、本発明にあっては、次に列挙するような効果がある。
(1)防犯カバー具のサムターンカバーを2本以上の指で押さえながら開けようとしない限り、簡単に上方へ移動しない。したがって、発明の第1の目的を十分に達成することができる。
(2)摘み部が上下方向へと移動する縦長のサムターンもカバーすることができる。
(3)防犯カバー具のサムターンカバーを所要の位置まで持ち上げた場合に於いて、サムターンカバーから指を離しても、サムターンカバーはそのまま開いた状態に停止している。
(4)サムターンカバーを案内支持部材に簡単に取り付けることができるができる反面、一旦、案内支持部材にサムターンカバーを取り付けた場合に、該カバーを簡単に取り外すことができない。
【図面の簡単な説明】
図1乃至図13は本発明の一実施例を示す各説明図。図14はサムターンカバーの他の実施例を示す斜視図。
【図1】実施形態の一例を示した分解斜視図。
【図2】斜視図(サムターンカバーは仮想線)。
【図3】戸の内壁面に固定した場合の正面図。
【図4】図3を基準にした右側面からの説明図(サムターンカバーは仮想線)。
【図5】図3の5−5線に基づく概略断面説明図(一部を切欠している)。
【図6】図3の6−6線に基づく概略断面説明図。
【図7】図3の7−7線に基づく概略断面説明図。
【図8】要部(切欠部)の説明図。
【図9】サムターンカバーを指で摘んで開ける時の説明図。
【図10】サムターンカバーをそのまま持ち上げた場合の説明図。
【図11】サムターンカバーが落下しないように支持される時の概略説明図。
【図12】サムターンカバーの下位の係合部を案内支持部材に嵌め込む時の説明図。
【図13】サムターンカバーの上位の係合部を案内支持部材に嵌め込む時の説明図。
【図14】サムターンカバーの他の実施例を示す斜視図。
【符号の説明】
1…防犯カバー具、2…戸、2a…内壁面、3…サムターン、3a…下端部、5…ケース本体、6…摘み操作板、6a…摘み部、7…案内支持部材、8…第1被係合部、9a,9b…係合部、10,10A…サムターンカバー、10a…カバーの前壁、10b…カバーの左右側壁、11…ケース状支持部、11a…支持部の左右側壁、12…枠状案内支持部、12a…案内支持部の左右側枠部、12b…上枠部、13…第2被係合部、14…切欠部、15…支持突起、15a…下方の傾斜面、15b…上方の支持傾斜面、16…支持部の上端支持面、20…係合爪片、25…スリット。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a security cover for a thumb turn of a lock of a door (opening door, sliding door, etc.).
[0002]
[Prior art]
Conventionally, a lock operating tool attached to an inner sliding door has, for example, a case-like mounting frame and a knob that is slidably mounted in the mounting frame so as to be vertically slidable and protrudes from a vertical guide slot of the mounting frame. And a knob operating plate ("thumb turn operating plate") for operating a locking piece (for example, a sickle piece) of a sliding door lock provided on an inner sliding door in a locking or unlocking direction. A drive shaft and the like were provided.
[0003]
In the above configuration, if the inside and outside sliding doors are locked via scythes, and if a thief tries to unlock the sliding doors' scythes illegally, unlock the holes using a drill. There is an example of opening, but for example, a hard bar is inserted into the joint surface of the overlapped inner and outer frames, forcing a gap.
[0004]
Then, a hook-shaped wire member (one of the tools of a thief) having a tip portion is inserted through a gap, and is attempted to be hooked on a knob portion of a knob operation plate constituting a sliding door lock. In such a case, when the tip of the wire member is caught on the knob, the thief lifts the knob operation plate well through the knob. Then, the scythe retreats through the sliding of the picking operation plate and the movement of the interlocking member.
[0005]
Therefore, the sliding door lock in which the sickle piece is unlocked by simply lifting or pushing down the knob operating plate has a problem that the probability of unauthorized unlocking is high. As a prior art document that solves such a problem, there is JP-A-2003-56218.
[0006]
[Problems to be solved by the invention]
A first object of the present invention is to prevent a burglar from opening a hole in a door or operating a picking operation plate using a wire member or the like from a gap in the door to put a sickle in a lock in an unlocked state. It is to provide a security cover device. A second object is that the thumb-turn cover of the security cover device does not easily move upward unless the thumb-turn cover is opened with two or more fingers. A third object is that, when the thumb-turn cover of the security cover is lifted to a required position, the thumb-turn cover remains open even if the finger is released from the thumb-turn cover. A fourth object is that while the thumb-turn cover can be easily attached to the guide support member, once the thumb-turn cover has been attached to the guide support member, the cover cannot be easily removed. A fifth object is to be able to cover a vertically long thumb turn in which the knob moves vertically.
[0007]
[Means for Solving the Problems]
The security cover device for a thumb-turn according to the present invention is fixed to an inner wall surface of a door so as to surround the thumb-turn, and has a first engaged portion on left and right side frame portions; A thumb-turn cover that has an engaging portion that engages with the first engaged portion, and that, when lifted up with a finger and slid upward, a knob portion of the thumb-operating knob operating plate appears. .
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 13 are explanatory diagrams showing an embodiment of the present invention. Reference numeral 1 denotes a thumb-turn security cover for locking a door (opening / closing door, sliding door, etc.) (hereinafter simply referred to as “security cover”).
[0009]
The security cover device 1 is fixedly attached to the inner wall surface (for example, a vertical frame) 2a of the inner sliding door 2 as shown in FIG. Although the configuration of a sliding door lock as an example of a lock is not particularly shown, it generally has a locking piece (sickle piece) provided in a vertical frame of the inner sliding door 2 and supported by an interlocking member. The locking piece is engaged with a receiving fitting provided on the outside sliding door of the other party. In the present embodiment, since the sliding door lock itself is not a specific requirement of the invention, a detailed description is omitted.
[0010]
Reference numeral 3 denotes a thumb turn for moving the locking piece of the lock in the locking or unlocking direction. This thumb turn 3 is also attached to the inner wall surface (for example, a vertical frame) 2 a of the sliding door 2 via a fixing tool 4. When the components of the thumb turn 3 are roughly divided, a knob body having an arbitrary shape and a knob portion 6a which is slidably housed in the case body 5 and protrudes from a guide window 5a of the case body 5 is provided. It is composed of a plate 6 and a locking piece interlocked with the knob operation plate 6.
[0011]
Therefore, the configuration of the security cover 1 of the present invention will be described. As shown in FIG. 2, the security cover 1 is fixed to the inner wall surface 2 a of the door 2 so as to surround a part or the whole of the thumb turn 3 (in this embodiment, the entire case body 5). A guide support member 7 having a first engaged portion 8, 8 on a frame portion, and small projection-shaped engaging portions 9a, 9b engaged with the first engaged portions 8, 8 of the guide support member 7. And a transparent or translucent thumb-turn cover 10 in which a knob 6a of the thumb-operating plate 6 of the thumb-turn 3 appears when the finger is lifted and slid upward.
[0012]
First, the guide support member 7 will be described. The guide support member 7 has a case-shaped support portion 11 that covers the lower end portion 3a of the vertically long thumb turn 3, and left and right side frame portions 12a, 12a respectively connected to left and right side walls 11a, 11a of the support portion 11. And a frame-shaped guide support portion 12.
[0013]
The guide support portion 12 does not need to have the upper frame portion 12b having the L-shaped end surface, but in the present embodiment, the guide support portion 12 is made tough, and is firmly attached to the inner wall surface 2a of the sliding door 2 via the upper frame portion 12b. For example, the upper frame portion 12b is formed in an L-shaped end face or an L-shaped cross section. Therefore, reinforcing ribs parallel to the upper frame portion 12b may be provided above the left and right side frame portions 12a of the guide support portion 12.
[0014]
However, the lower case-shaped support portion 11 does not have an upper wall and a rear wall (rear wall). Second engaged portions (small holes, small grooves, etc.) 13, 13 are formed at the upper end portions of the left and right side walls 11a, 11a of the support portion 11. The left and right side walls 11a, 11a are formed thick except for the upper end portion so as to be strong.
[0015]
On the other hand, the left and right side frame portions 12a of the guide support portion 12 correspond to a pair of left and right side wall portions formed in a column shape. In the present embodiment, the vertical grooves 8 as the above-described first engaged portions are formed on the outer wall surfaces of the left and right frame portions 12a, 12a.
[0016]
Reference numeral 14 denotes a pair of left and right cutouts formed at the upper end portions of the left and right side frame portions 12a, 12a. These cutouts 14, 14 communicate with the vertical grooves 8, 8, respectively. These notches 14 have a width through which the left and right small projection engagement portions 9 of the thumb turn cover 10 pass.
[0017]
By the way, support protrusions 15 are formed at the upper positions in the vertical grooves 8, 8 and project outwardly in the shape of a mountain or a semicircular arc (in this embodiment, a mountain in cross section). As shown in FIG. 11, these support protrusions 15 have a lower inclined surface 15a and an upper supported inclined surface 15b.
[0018]
Next, the thumb turn cover 10 will be described. The thumb-turn cover 10 is formed in a case shape as shown in FIG. 1, but does not have a rear wall (rear wall) and a lower wall, as is apparent from a schematic longitudinal section of FIG. Therefore, if reference numerals are given to the respective walls, 10a is a front wall, 10b and 10b are left and right side walls, and 10c is an upper wall.
[0019]
The lower end portions of the left and right side walls 10b, 10b exactly fit on the stepped upper end support surface 16 because the upper end portion of the support portion 11 of the guide support member 7 is formed in a stepped shape. As shown in FIG.
[0020]
Further, a pair of left and right engaging claw pieces 20, 20 simultaneously engaging and disengaging with the second engaged portions 13, 13 of the guide support member 7, respectively, are formed on the lower end edges of the left and right side walls 10 b, 10 b in a tongue shape. It is protruding. The lower ends of the engaging claw pieces 20, 20 or the left and right side walls 10b, 10b have an elastic return deformation function due to the material itself.
[0021]
Further, in the present embodiment, a plurality of (for example, a total of four) slidingly engaging the first engaged portions (vertical grooves) 8 of the guide support member 7 on the inner wall surfaces at the lower end portions of the left and right side walls 10b and 10b, respectively. ) Are formed in the shape of small projections. These small projecting engagement portions 9a, 9b are vertically spaced apart from each other by a required distance, and can enter the vertical grooves 8, 8 from the cutouts 14, 14 of the guide support member 7. It is.
[0022]
In the above configuration, FIGS. 2 to 5 are schematic explanatory views showing a state in which the thumb turn cover 10 is closed. At this time, the engaging claw pieces 20 of the thumb turn cover 10 are engaged with the second engaged portions 13 of the guide support member 7, and the lower end surface of the thumb turn cover 10 is formed on the support portion 11 of the guide member 7. Even if a thief tries to open the thumb turn cover 10 by inserting a wire member through a gap between the doors 2, for example, the thief fits the upper end support surface 16 so that the hook-shaped tip of the wire member has Do not get caught on etc.
[0023]
Therefore, the thumb turn cover 10 cannot be opened. Even if a thief operates the tool from outside the door to open the thumb-turn cover 10, it only hits the side wall 11a, the bottom wall 11b, the front wall 11c, etc. of the support portion 11 of the guide support member 7.
[0024]
On the other hand, when the resident attempts to open the thumb-turn cover 10, as shown in FIG. 9, the left and right side walls 10b, 10b of the thumb-turn cover 10 are pinched and pressed by two or more fingers.
[0025]
Then, the lower end portions of the left and right side walls 10b, 10b are slightly displaced inward because they have an elastic return deformation function as shown in FIG. It comes off from the joints 13,13. Therefore, when the thumb turn cover 10 is lifted as it is, the thumb turn cover 10 slides in the vertical groove 8 of the guide support member 7 via the plurality of engaging portions 9.
[0026]
As shown in FIG. 9, the thumb-turn cover is lifted by fingers, and as shown in FIG. 10, the upper engaging portion 9 a of the thumb-turn cover 10 is guided and supported at or after the knob 6 a of the thumb-turn 3 completely appears. The member 7 gets over the lower inclined surface 15a of the support protrusion 15 of the member 7.
[0027]
Then, as shown in FIG. 11, the upper engaging portion 9a of the thumb turn cover 10 rides on the upper inclined support surface 15b of the support projection 15, so that the thumb turn cover does not fall naturally.
[0028]
When the thumb turn cover 10 is closed, when the upper wall 10c of the thumb turn cover 10 is pushed down, the state is reversed from that in FIG. 11, so that the thumb turn cover 10 slides straight down and the engaging claw pieces 20, 20 of the thumb turn cover 10 are guided and supported. The member 7 is simultaneously engaged with the second engaged portion 13. In this case, the engaging claw pieces 20 are engaged with the second engaged portion 13 after being displaced inward.
[0029]
FIGS. 12 and 13 are explanatory diagrams of a case where the thumb turn cover 10 is fitted into the guide support member 7. In the present embodiment, a pair of left and right cutouts 14 is formed at the upper end of the guide support member 7, and from there, first, the lower engaging portion 9b of the thumb turn cover 10 is inserted into the vertical grooves 8,8. Then, the upper engaging portion 9a is fitted into the vertical grooves 8,8. Then, the thumb turn cover 10 and the guide support member 7 form one security cover device 1.
[0030]
When the security cover device 1 is fixed to the inner wall surface 2a of the door 2, the thumb-turn cover 10 cannot be tilted toward the inner wall surface 2a as shown in FIG. When fixed to the wall surface 2a, the thumb turn cover 10 cannot be removed from the guide support member 7 so easily.
[0031]
【Example】
Since the lower ends of the left and right side walls 10b, 10b of the thumb turn cover 10 are better to have an elastic deformation function and an elastic return function, the thumb turn cover 10 is formed of a synthetic resin material. The pair of left and right engaging claw pieces 20, 20 that respectively simultaneously engage and disengage with the second engaged portions 13, 13 of the guide support member 7 may be one. Further, the shape and location of the engaging claw pieces 20 can be arbitrarily changed in design. The form of the thumb turn cover 10 is not particularly limited.
[0032]
Further, as shown in FIG. 14, when the lower ends of the left and right side walls 10a, 10a of the thumb turn cover 10A are pinched and pressed by a finger, the lower ends (particularly, the edges) are easily displaced inward. A total of two slits (slits) 25, 25 may be formed as appropriate. In this thumb turn cover 10A, short vertical slits 25, 25 are formed at the lower end portion corresponding to or near the boundary between the front wall 10a and the left and right side walls 10b, 10b of the thumb turn cover 10A.
[0033]
【The invention's effect】
As is apparent from the above description, the present invention has the following effects.
(1) It does not easily move upward unless the thumb-turn cover of the security cover is opened with two or more fingers. Therefore, the first object of the invention can be sufficiently achieved.
(2) A vertically long thumb turn in which the knob moves in the vertical direction can also be covered.
(3) When the thumb-turn cover of the security cover is lifted to a required position, the thumb-turn cover remains open even if the finger is released from the thumb-turn cover.
(4) Although the thumb turn cover can be easily attached to the guide support member, once the thumb turn cover is attached to the guide support member, the cover cannot be easily removed.
[Brief description of the drawings]
1 to 13 are explanatory views showing one embodiment of the present invention. FIG. 14 is a perspective view showing another embodiment of the thumb turn cover.
FIG. 1 is an exploded perspective view showing an example of an embodiment.
FIG. 2 is a perspective view (thumb turn covers are imaginary lines).
FIG. 3 is a front view when fixed to the inner wall surface of the door.
FIG. 4 is an explanatory view from the right side based on FIG. 3 (thumb turn covers are imaginary lines).
FIG. 5 is a schematic sectional view (partially cut away) taken along line 5-5 in FIG. 3;
FIG. 6 is a schematic sectional explanatory view based on line 6-6 in FIG. 3;
FIG. 7 is a schematic sectional explanatory view based on the line 7-7 in FIG. 3;
FIG. 8 is an explanatory diagram of a main part (a cutout part).
FIG. 9 is an explanatory diagram when the thumb turn cover is picked up with a finger and opened.
FIG. 10 is an explanatory diagram when the thumb turn cover is lifted as it is.
FIG. 11 is a schematic explanatory view when the thumb turn cover is supported so as not to fall.
FIG. 12 is an explanatory diagram when a lower engaging portion of a thumb turn cover is fitted into a guide support member.
FIG. 13 is an explanatory diagram when the upper engaging portion of the thumb turn cover is fitted into the guide support member.
FIG. 14 is a perspective view showing another embodiment of the thumb turn cover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Security cover device, 2 ... Door, 2a ... Inner wall surface, 3 ... Thumb turn, 3a ... Lower end portion, 5 ... Case main body, 6 ... Knob operation plate, 6a ... Knob portion, 7 ... Guide support member, 8 ... First Engaged parts, 9a, 9b: Engagement parts, 10, 10A: Thumb turn cover, 10a: Front wall of cover, 10b: Right and left side walls of cover, 11: Case-shaped support part, 11a: Left and right side walls of support part, 12 ... frame-shaped guide support portion, 12a ... left and right side frame portions of the guide support portion, 12b ... upper frame portion, 13 ... second engaged portion, 14 ... cutout portion, 15 ... support protrusion, 15a ... lower inclined surface, 15b: Upper support inclined surface, 16: Upper end support surface of the support portion, 20: Engagement claw piece, 25: Slit.

Claims (8)

サムターンを囲むように戸の内壁面に固定され、かつ、左右の側枠部に第1被係合部を有する案内支持部材と、この案内支持部材の前記第1被係合部に係合する係合部を有し、かつ、指で持ち上げて上方へスライドさせると、前記サムターンの摘み操作板の摘み部が現れるサムターンカバーとから成る錠前のサムターン用防犯カバー具。A guide support member fixed to the inner wall surface of the door so as to surround the thumb turn, and having a first engaged portion on left and right side frame portions, and engaging with the first engaged portion of the guide support member A thumb-turn security cover device comprising: a thumb-turn cover having an engaging portion, and a thumb-turn portion of the thumb-turning operation plate when the finger is lifted up and slid upward. 請求項1に於いて、案内支持部材7は、縦長のサムターン3の下端部をカバーするケース状支持部11と、この支持部に左右の側枠部12aがそれぞれ連設する案内支持部12とから成ることを特徴とする錠前のサムターン用防犯カバー具。In claim 1, the guide support member 7 includes a case-like support portion 11 that covers the lower end portion of the vertically long thumb turn 3, and a guide support portion 12 in which left and right side frame portions 12a are respectively connected to the support portion. A security cover for a thumb lock of a lock, comprising: 請求項1又は請求項2に於いて、サムターンカバーの下端縁には、案内支持部材の支持部に形成した第2被係合部13と係脱する少なくとも1個の係合爪片20が設けられていることを特徴とする錠前のサムターン用防犯カバー具。In the first or second aspect, at least one engaging claw piece 20 is provided at a lower end edge of the thumb turn cover to be engaged with and disengaged from the second engaged portion 13 formed on the support portion of the guide support member. A security cover for a thumb lock of a lock. 請求項1に於いて、案内支持部材の第1被係合部8は縦溝であり、一方、サムターンカバーの係合部9は、前記縦溝に係合する複数個の小突起であることを特徴とする錠前のサムターン用防犯カバー具。2. The first engaging portion 8 of the guide support member is a vertical groove, while the engaging portion 9 of the thumb turn cover is a plurality of small projections engaging with the vertical groove. A security cover for a thumb lock with a lock. 請求項1に於いて、案内支持部材のケース状支持部11の上端支持面16とサムターンカバー10の下端部の端面は、ぴったりと合うことを特徴とする錠前のサムターン用防犯カバー具。2. The security cover for a thumb lock according to claim 1, wherein an upper end support surface of the case-like support portion of the guide support member and an end surface of a lower end portion of the thumb turn cover are fitted to each other. 請求項1又は請求項4に於いて、サムターンカバーを持ち上げてサムターンの操作片の摘み部が完全に現れた後に、サムターンカバーが自然落下しないように案内支持部材の縦溝内の上部位置に、サムターンカバーの係合部がスライド係合する支持突起を設けたことを特徴とする錠前のサムターン用防犯カバー具。In claim 1 or claim 4, after the thumb-turn cover is lifted and the knob of the operation piece of the thumb-turn completely appears, the thumb-turn cover is located at an upper position in the vertical groove of the guide support member so as not to drop naturally. A thumb-turn security cover device for a lock, wherein a support projection is provided in which an engagement portion of the thumb-turn cover slides. 請求項1又は請求項5に於いて、案内支持部材の左右の側枠部12a,12aの上端部に、第1被係合部に連通する切欠部14,14が形成されていることを特徴とする錠前のサムターン用防犯カバー具。In the first or fifth aspect, the notch portions 14, 14 communicating with the first engaged portion are formed at upper end portions of the left and right side frame portions 12a, 12a of the guide support member. A security cover for a thumb lock. 請求項1に於いて、サムターンカバー10Aの左右の側壁10a,10aの下端部に、複数個のスリット25を形成したことを特徴とする錠前のサムターン用防犯カバー具。The security cover for a thumb lock according to claim 1, wherein a plurality of slits (25) are formed at lower ends of left and right side walls (10a, 10a) of the thumb turn cover (10A).
JP2003139778A 2003-05-19 2003-05-19 Crime-preventing thumb-turn lock cover device Pending JP2004339851A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006291460A (en) * 2005-04-06 2006-10-26 Shin Nikkei Co Ltd Sash with crescent
JP2012144893A (en) * 2011-01-12 2012-08-02 Nitto Kogyo Co Ltd Cover for handle of electric equipment storage box

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006291460A (en) * 2005-04-06 2006-10-26 Shin Nikkei Co Ltd Sash with crescent
JP4587465B2 (en) * 2005-04-06 2010-11-24 新日軽株式会社 Crescent sash
JP2012144893A (en) * 2011-01-12 2012-08-02 Nitto Kogyo Co Ltd Cover for handle of electric equipment storage box

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