JP2005030130A

JP2005030130A - Crime preventing thumb-turn

Info

Publication number: JP2005030130A
Application number: JP2003272556A
Authority: JP
Inventors: Kunio Akamatsu; 邦夫赤松
Original assignee: Miwa Lock KK; Miwa Lock Co Ltd
Current assignee: Miwa Lock KK; Miwa Lock Co Ltd
Priority date: 2003-07-09
Filing date: 2003-07-09
Publication date: 2005-02-03

Abstract

<P>PROBLEM TO BE SOLVED: To prevent illicit unlocking by rotating a thumb-turn by inserting a thin tool from a hole by opening the hole in a door. <P>SOLUTION: Inside-outside connecting members 12 and 16 of respectively forming a cutout, are coaxially and relatively rotatably connected to an outer peripheral surface of a cup-shaped body, in a mode of overlapping a cylindrical part. One of these inside-outside connecting members is connected to a thumb-turn shaft 13, and the other is connected to a knob. A torsion spring 19 having output torque smaller than operation torque of the thumb-turn is elastically installed in the inside connecting member. Engaging pieces 23 and 23 formed on both ends of this torsion spring, and projecting outward in the radial direction of the connecting members, are extended outside the connecting members, by inserting the cutout 21 of the inside-outside connecting members in common. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、防犯サムターンに係り、特に、扉に穴を開けて室内に工具を差込み、不正解錠の目的でサムターンを回すことを防止できる防犯サムターンに関する。 The present invention relates to a security thumb turn, and more particularly to a security thumb turn that can prevent a thumb turn from being turned for the purpose of unauthorized unlocking by opening a hole in a door and inserting a tool into the room.

周知のように、サムターンは室内側に突出した摘みを有し、この摘みに装着されたサムターン軸を錠箱内のデッドカムに連結させて、室内側から錠前を施解錠するものである。 As is well known, the thumb turn has a knob projecting toward the indoor side, and the thumb turn shaft attached to the knob is connected to a dead cam in the lock box to lock and unlock the lock from the indoor side.

ところで、近年扉のノブ付近に穴を開け、この穴から細い工具を差込んで、サムターンを不正解錠の目的で操作する犯罪行為が頻発している。 By the way, in recent years, a criminal act of making a hole in the vicinity of a door knob and inserting a thin tool through the hole to manipulate the thumb turn for the purpose of unauthorized unlocking has frequently occurred.

そこで、サムターンを室外側から操作することを邪魔するため、サムターンの回りに低い障壁を設けたり、或いはカバーで覆う、等の対策が採られているが、これらのカバー等が今度は通常のサムターンの操作の邪魔になる、等未だ改良の余地がある。 Therefore, in order to prevent the thumb turn from being operated from the outside of the room, measures such as providing a low barrier around the thumb turn or covering with a cover have been taken. There is still room for improvement.

そこで、この発明は、サムターンの回りにカバー等を設けない新規な防犯サムターンを提供し、以て、サムターンの操作性を損わずに防犯性能を向上させることを目的としている。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a novel crime prevention thumb turn that does not have a cover or the like around the thumb turn, thereby improving the crime prevention performance without impairing the operability of the thumb turn.

上記の目的を達成するため、請求項１に記載の発明は、カップ状体の外周面に夫々切欠を形成した内側及び外側連結部材を、筒部が重合する態様で、同軸かつ相対回動可能に連結し、これら内側及び外側連結部材の一方をサムターン軸に、他方を摘みに連結すると共に、内側連結部材内にサムターンの作動トルクより小さい出力トルクの捩りばねを弾装し、この捩りばねの両端に形成され、連結部材の半径方向外方に突出する係合片を、内側及び外側連結部材の切欠を共通に挿通させて連結部材外に延伸させ、一方、一体的に連結されたこれら内側及び外側連結部材、サムターン軸及び摘みを室内側の扉面に回動自在に支承したことを特徴とする。 In order to achieve the above object, the invention described in claim 1 is characterized in that the inner and outer connecting members, each having a notch formed in the outer peripheral surface of the cup-like body, are coaxially and relatively rotatable in such a manner that the cylindrical portions overlap. One of these inner and outer connecting members is connected to the thumb turn shaft, and the other is connected to the knob, and a torsion spring having an output torque smaller than the operating torque of the thumb turn is mounted in the inner connecting member. Engagement pieces formed at both ends and projecting outward in the radial direction of the connecting member are extended outside the connecting member through the notches of the inner and outer connecting members in common. The outer connecting member, the thumb turn shaft and the knob are rotatably supported on the door surface on the indoor side.

また、請求項２に記載の発明は、上記捩りばねが捩りコイルばねであることを特徴とする。 The invention according to claim 2 is characterized in that the torsion spring is a torsion coil spring.

更にまた、請求項３に記載の発明は、上記内側及び外側連結部材の切欠の側端縁が連結部材の中心軸を見込む角度を同一に設定したことを特徴とする。 Furthermore, the invention described in claim 3 is characterized in that the angles at which the side edges of the cutouts of the inner and outer connecting members look at the central axis of the connecting member are set to be the same.

この発明による防犯サムターンは、施解錠のため摘みを所定の方向に回すと、捩りばねが弾性変形して所定の角度摘みのみが空転し、所定の角度回してから初めてサムターン軸が回動を始めるので、通常のサムターンよりも作動角度が大きくなり、そのため扉のに開けた穴から室内に差込んだ工具ではサムターンを回し切れず、不正解錠が不可能になる。 In the crime prevention thumb turn according to the present invention, when the knob is turned in a predetermined direction for locking and unlocking, the torsion spring is elastically deformed, and only the predetermined angle knob is idled, and the thumb turn shaft starts rotating only after the predetermined angle is turned. As a result, the operating angle is larger than that of a normal thumb turn, so that the thumb turn cannot be fully turned with a tool inserted into the room through a hole formed in the door, making unauthorized unlocking impossible.

施解錠のためのサムターンの摘みの回動を大きくして室外からの不正解錠を不可能にするという本発明の目的を、外周部に切欠を有するカップ状の内側及び外側連結部材と、内側連結部材に弾装された捩りばねとで一種のクラッチを構成し、摘みによる最初の所定の角度空転させることにより簡単な構成で実現した。 A cup-shaped inner and outer connecting member having a notch in the outer peripheral portion, and an inner side of the object of the present invention to increase the rotation of the thumb-turn knob for locking and unlocking to make unauthorized unlocking from the outside impossible. A torsion spring mounted on the connecting member constitutes a kind of clutch, and it is realized by a simple structure by idling at the first predetermined angle by picking.

以下、この発明の実施例を図面を参照して説明する。
図１乃至図３において符号１は中筒を示し、この発明による防犯サムターンはこの中筒１内に回動可能に支承されている。 Embodiments of the present invention will be described below with reference to the drawings.
1 to 3, reference numeral 1 denotes a middle cylinder, and a security thumb turn according to the present invention is rotatably supported in the middle cylinder 1.

この中筒１と同様の構成のものは、例えば扉外面に装着されるシリンダ錠を保持するものと同じ構成であり、それ自体周知であるから、以下の説明は簡単にする。 The configuration similar to that of the middle cylinder 1 is the same as that for holding a cylinder lock mounted on the outer surface of the door, for example, and is well known per se, so the following description will be simplified.

中筒１は、底面に開口を有する厚肉カップ状のブロック体で、その開口端円には一対の取付ブロック２、２が突設されている。 The middle cylinder 1 is a thick cup-shaped block body having an opening on the bottom surface, and a pair of attachment blocks 2 and 2 project from the opening end circle.

この中筒１は、その開口端部を扉内面に開口した中筒挿通孔３（図１参照）及び図示しない錠箱の側板の開口を通して錠箱内に挿入され、扉の自由側端縁に装着される錠箱のフロント板を水平に貫通する図示しない取付杆を、取付ブロックの装着孔４（図１参照）に挿入することにより錠箱に固定される。なお、図１及び図２において符号５は公知の化粧リングを示す。 The middle cylinder 1 is inserted into the lock box through the middle cylinder insertion hole 3 (see FIG. 1) whose opening end is opened on the inner surface of the door and the opening of the side plate of the lock box (not shown), and is attached to the free side edge of the door. An attachment rod (not shown) that horizontally penetrates the front plate of the lock box to be attached is inserted into the attachment hole 4 (see FIG. 1) of the attachment block to be fixed to the lock box. 1 and 2, reference numeral 5 indicates a known decorative ring.

上記中筒１の室内側（図１及び図２で左側）にはサムターンの摘み部が回動自在に装着されている。 A thumb-turn knob is rotatably mounted on the inside of the middle cylinder 1 (left side in FIGS. 1 and 2).

図示の実施例では、サムターンの摘み６及びこれに一体的に結合された連結板７（図１参照）に薄肉の支持筒８をかしめ付け、この支持筒８の外端（図１及び図２で右端）部を、その開口端縁に突設された爪９を曲げない状態で、中筒１の内孔段部に係止された大径の第１ワッシャー１１の開口を通して外側に挿通させる。 In the illustrated embodiment, a thin support tube 8 is caulked to the thumb turn knob 6 and a connecting plate 7 (see FIG. 1) integrally coupled thereto, and the outer end of the support tube 8 (FIGS. 1 and 2). The right end) portion is inserted outside through the opening of the large-diameter first washer 11 locked to the inner hole step portion of the inner cylinder 1 without bending the claw 9 protruding from the opening edge. .

そして、第１ワッシャー１１の外側（室外側）に突出した支持筒８の外端にカップ状の内側連結部材１２をかしめにより一体的に装着する。なお、このかしめによる装着は、内側連結部材１２の底面の図示しない開口に上記支持筒の爪９を挿入し、図１に示すようにこれを外側に折り曲げることにより行うが、この様なかしめ加工は周知であるから更に詳細な説明は省略する。 Then, a cup-shaped inner connecting member 12 is integrally attached to the outer end of the support cylinder 8 protruding outside the first washer 11 (outside of the room) by caulking. The mounting by caulking is performed by inserting the claw 9 of the support cylinder into an opening (not shown) of the bottom surface of the inner connecting member 12 and bending it outward as shown in FIG. Are well-known and will not be described in further detail.

このようにして、外端に内側連結部材１２を一体的に装着した支持筒８付の摘み６が、抜け止めを施された状態で、中筒１に回動可能に支承されることになる。 In this way, the knob 6 with the support cylinder 8 integrally mounted with the inner connecting member 12 at the outer end is rotatably supported by the middle cylinder 1 in a state of being prevented from being detached. .

一方、図３に示すように断面が略十字形のサムターン軸１３の中央部には、付番しない段部が形成されており、この段部より室内側の部分に、室外側から順に、第２ワッシャー１４（図１参照）、サムターン軸に外接する開口を有する偏平なカップ状のサムターンガイド１５、底面にサムターン軸の断面と形状係合する異形穴を開口させたカップ状の外側連結部材１６、及びＥ型止め輪１７が装着され、これらは一体的に連結されている。 On the other hand, as shown in FIG. 3, an unnumbered step portion is formed at the central portion of the thumb turn shaft 13 having a substantially cross-shaped cross section. 2 washer 14 (see FIG. 1), a flat cup-shaped thumb turn guide 15 having an opening circumscribing the thumb-turn shaft, and a cup-shaped outer connecting member 16 having a deformed hole formed on the bottom to engage with the cross-section of the thumb-turn shaft. , And an E-type retaining ring 17 are mounted and are integrally connected.

なお、内側及び外側連結部材１２、１６の内側及び外側は、室内側、室外側の内側、外側ではなく、連結部材の中心軸に関し、半径方向の内側及び外側をいうものとする。 The inner and outer sides of the inner and outer connecting members 12 and 16 are not the indoor side and the inner and outer sides of the outdoor side, but the inner and outer sides in the radial direction with respect to the central axis of the connecting member.

上記した一連の部材を連結したものは、外側連結部材１６の開口と内側連結部材１２の開口とを相互に対向させた状態でこれらを回動可能に嵌合させ、また、サムターンガイド１５の開口端縁を中筒１の段部に係合させるようにして、中筒の内孔開口端縁部に装着され、抜け止めのためＣ型止め輪１８を嵌着する。 In the above-described series of members connected, the opening of the outer connecting member 16 and the opening of the inner connecting member 12 are rotatably fitted with each other facing each other. The end edge is engaged with the step portion of the middle cylinder 1 so as to be attached to the inner hole opening edge of the middle cylinder, and the C-type retaining ring 18 is fitted to prevent the middle cylinder 1 from coming off.

このようにして、錠箱内のデッドカムに連結されるサムターン軸１３を、抜け止めを施した状態で、中筒１に回動可能に支承する。 In this way, the thumb turn shaft 13 connected to the dead cam in the lock box is rotatably supported on the middle cylinder 1 in a state where the thumb turn shaft 13 is provided.

上記内側連結部材１２内には、捩りコイルばねとしての捩りばね１９が弾装されており、上記サムターン軸１３及び前記摘み６は、この捩りばね１９を介して、円周方向において係脱可能に連結されている。 A torsion spring 19 as a torsion coil spring is elastically mounted in the inner connecting member 12, and the thumb turn shaft 13 and the knob 6 can be engaged and disengaged in the circumferential direction via the torsion spring 19. It is connected.

すなわち、図４に示すように、内側及び外側連結部材１２、１６には夫々切欠２１が形成されており、図示の実施例では、この切欠２１の側端縁２２、２２（図５参照）が連結部材の中心軸を見込む角度が約９０度となるように設定されている。 That is, as shown in FIG. 4, notches 21 are formed in the inner and outer connecting members 12 and 16, respectively. In the illustrated embodiment, side edges 22 and 22 (see FIG. 5) of the notches 21 are formed. The angle at which the central axis of the connecting member is expected is set to about 90 degrees.

また、内側連結部材１２内においてサムターン軸１３の回りに巻装された捩りばね１９の両端に形成され、夫々連結部材１２（１６）の半径方向外方に突出する係合片２３、２３は、内側及び外側連結部材１２、１６の切欠２１、２１を共通に、すなわち両方の切欠を双方とも挿通させて外側連結部材１６外に延伸している。 Further, the engagement pieces 23 and 23 formed at both ends of the torsion spring 19 wound around the thumb turn shaft 13 in the inner connecting member 12 and projecting outward in the radial direction of the connecting member 12 (16), The notches 21 and 21 of the inner and outer connecting members 12 and 16 are extended in common, that is, both the notches are inserted through the outer connecting member 16.

なお、図４に示す捩りばね１９は少し巻き締められた状態で内側連結部材１２内に弾装されており、したがって、係合片２３、２３は外側に拡開する方向に付勢されているが、内側及び外側連結部材の切欠の側端縁２２に係止されていて、内側及び外側連結部材１２、１３の関係角度位置が保たれている。 Note that the torsion spring 19 shown in FIG. 4 is elastically mounted in the inner connecting member 12 in a slightly tightened state, and therefore the engagement pieces 23 and 23 are urged in the direction of expanding outward. However, it is latched by the side edge 22 of the notch of an inner side and an outer side connection member, and the relative angular position of the inner side and the outer side connection members 12 and 13 is maintained.

なお、図４に示すサムターン軸１３は例えば解錠角度位置にあるものとし、このときの捩りばね１９の出力トルク、すなわち、摘み６を回そうとしたとき手指に反作用として感じられるトルクは、サムターン１３の作動トルク、すなわち、サムターンが錠箱内のデッドカムを施錠状態に回すに必要なトルクより小さく設定するものとする。 It is assumed that the thumb turn shaft 13 shown in FIG. 4 is at an unlocked angular position, for example. The output torque of the torsion spring 19 at this time, that is, the torque felt as a reaction to the finger when turning the knob 6 is The operating torque of 13, that is, the thumb turn is set smaller than the torque required to turn the dead cam in the lock box into the locked state.

上記のように構成されたこの発明の一実施例による防犯サムターンは、解錠状態にあるデッドカムを施錠するため、例えば摘み６を時計方向に回動させると、デッドカムに掴持されたサムターン軸１３を解錠角度位置に残した状態で、摘み６及びこれと一体の内側連結部材１２が時計方向に回動する。 The security thumb turn according to one embodiment of the present invention configured as described above locks the dead cam in the unlocked state. For example, when the knob 6 is rotated clockwise, the thumb turn shaft 13 held by the dead cam 13 Is left in the unlocking angle position, and the knob 6 and the inner connecting member 12 integrated therewith rotate clockwise.

このとき、上記したように捩りばね１９の出力トルクはサムターン１３の作動トルクより小さいので、外側連結部材１６は不動の状態で解錠角度位置に残り、内側連結部材１２のみが時計方向に回動する。 At this time, since the output torque of the torsion spring 19 is smaller than the operating torque of the thumb turn 13 as described above, the outer connecting member 16 remains in the unlocked angular position in a stationary state, and only the inner connecting member 12 rotates clockwise. To do.

そして、摘み６を例えば９０度回すと、図５に示すように、内側連結部材１２の切欠の、前進側の側端縁が図５で下方（紙面方向向う側）の係合片を外側連結部材の切欠の側端縁に押し付けるに致り、以降、内側連結部材１２が、この係合片６を介して、外側連結部材１６及びこれと一体のサムターン軸１３に剛的に連結される。 When the knob 6 is turned, for example, 90 degrees, as shown in FIG. 5, the engagement piece whose notch of the inner connecting member 12 has the side edge on the forward side downward (side toward the paper surface) in FIG. Then, the inner connecting member 12 is rigidly connected to the outer connecting member 16 and the thumb turn shaft 13 integral with the outer connecting member 16 through the engaging piece 6.

そのため、摘み６を回す手指の力が直接サムターン軸１３に伝達され、従来のサムターンと同様に、例えば９０度の回転でデッドカムを回し、錠前を施錠する。 Therefore, the force of the finger turning the knob 6 is directly transmitted to the thumb turn shaft 13 and, like the conventional thumb turn, for example, the dead cam is rotated by 90 degrees to lock the lock.

解錠後摘みから手を話すと、図６に示すように、サムターン軸１３を施錠角度位置に残したまま、捩りばね１９が内側連結部材１２のみを反時計方向に回転させる。 When a hand is spoken from the knob after unlocking, as shown in FIG. 6, the torsion spring 19 rotates only the inner connecting member 12 in the counterclockwise direction while leaving the thumb turn shaft 13 in the locking angle position.

すなわち、外から見れば、摘み６を回すと最初の９０度は摘み６は空転し、その後の９０度の回動で摘み及びサムターン軸１３は一体的に回動して錠前を施錠する。 That is, when viewed from the outside, when the knob 6 is turned, the knob 6 is idled for the first 90 degrees, and the knob and the thumb turn shaft 13 are integrally rotated by the subsequent 90-degree rotation to lock the lock.

施錠後手を離せば、捩りばねの弾力により摘みのみが９０度反時計方向に戻る。この場合、摘みは１８０度回って９０度戻るから、通常のサムターンと同様に摘みの角度位置で施錠解錠を表示できる。 When the hand is released after locking, only the knob returns to 90 degrees counterclockwise due to the elasticity of the torsion spring. In this case, since the knob rotates 180 degrees and returns 90 degrees, the locking / unlocking can be displayed at the angle position of the knob similarly to a normal thumb turn.

また、施錠された錠前をサムターンを用いて室内側から解錠するには、図６に示す角度位置にある内側連結部材１２を摘みを用いて反時計方向に回動する。 Further, in order to unlock the locked lock from the indoor side using the thumb turn, the inner connecting member 12 at the angular position shown in FIG. 6 is rotated counterclockwise using the knob.

すると、今度は図６において下方にある内側連結部材１２の切欠の側端縁が下方（図６で手前側）の係合片６を反時計方向に押動する。 Then, the side edge of the notch of the inner connecting member 12 located downward in FIG. 6 now pushes the engaging piece 6 in the downward direction (front side in FIG. 6) counterclockwise.

そして、図６で手前側の係合片２３の角度位置が紙面方向向う側の係合片２３のそれと合致するに致り、内側及び外側連結部材１２、１６が円周方向において一体的に連結され、外側連結部材１６及びこれと一体のサムターン軸１３を反時計方向、すなわち解錠方向に回動させて図４に示す解錠角度位置に迄回す。 Then, as the angular position of the engagement piece 23 on the near side in FIG. 6 matches that of the engagement piece 23 on the paper surface side, the inner and outer connecting members 12 and 16 are integrally connected in the circumferential direction. Then, the outer connecting member 16 and the thumb turn shaft 13 integrated therewith are rotated counterclockwise, that is, in the unlocking direction and rotated to the unlocking angle position shown in FIG.

このようにして解錠操作が終了した後手を摘み６から離すと、捩りばね１９の弾力により内側操作部材１２が時計方向に９０度回動し、図４に示す元の角度位置に戻る。 When the hand is released from the knob 6 after the unlocking operation is completed in this way, the inner operation member 12 is rotated 90 degrees clockwise by the elasticity of the torsion spring 19 and returned to the original angular position shown in FIG.

なお、この発明は、図示の実施例に限定されず、種々に変形して実施することができる。 The present invention is not limited to the illustrated embodiment, and can be implemented with various modifications.

例えば、図示の実施例では内側連結部材１２を摘み６側に、外側連結部材１６をサムターン軸１３側に夫々連結するものとしたが、これは摘み６側の連結部材の径を大きくして外側連結部材としてもよい（図示せず）。 For example, in the illustrated embodiment, the inner connecting member 12 is connected to the knob 6 side and the outer connecting member 16 is connected to the thumb turn shaft 13 side, but this increases the diameter of the connecting member on the knob 6 side to the outer side. It is good also as a connection member (not shown).

また、図示の実施例では夫々カップ状の内側及び外側連結部材１２、１６を開口を相互に対向させて重合させたが、これは入れ子状に重合させてもよい（図示せず）。 In the illustrated embodiment, the cup-shaped inner and outer coupling members 12, 16 are superposed with their openings facing each other, but they may be superposed in a nested manner (not shown).

更にまた、図示の実施例では内側及び外側連結部材１２、１６の切欠の側端縁が中心軸を見込む角度を同じにしたが、これは異なる角度でもよい（図示せず）。 Furthermore, in the illustrated embodiment, the angle at which the side edges of the cutouts of the inner and outer connecting members 12, 16 are the same, but the angle may be different (not shown).

例えば、内側連結部材１２の切欠の角度を外側連結部材１６のそれよりも小さく設定すると（図示せず）、摘み６側の連結部材がばねの弾力を受けることなく遊動するが、それ自体この発明の作動には悪影響を与えない。 For example, if the angle of the notch of the inner connecting member 12 is set smaller than that of the outer connecting member 16 (not shown), the connecting member on the knob 6 side will move freely without receiving the elasticity of the spring. Does not adversely affect the operation of

しかしながら、摘み６を回すと、何の抵抗も無い遊動、ばねの弾力の抵抗を受ける遊動、及びサムターン軸と連結されての作動の３種類の手ごたえが生じるので、使い勝手が少し悪くなる、という不都合はある。 However, when the knob 6 is turned, there are three types of response: free movement with no resistance, free movement with spring resistance, and operation connected to the thumb-turn shaft. There is.

これは、内側連結部材１２の切欠の角度を外側連結部材１６のそれよりも大きく設定した場合も同様である。 This is the same when the angle of the notch of the inner connecting member 12 is set larger than that of the outer connecting member 16.

一方、上記の説明から明らかなように、摘みの遊動角度は連結部材の切欠の円周方向の寸法によって一義的に定まる。 On the other hand, as is clear from the above description, the free angle of the knob is uniquely determined by the circumferential dimension of the notch of the connecting member.

また、図示の実施例ではサムターン軸の作動角度を９０度、すなわち、デッドカムを９０度時計方向或いは反時計方向に回動させることにより施錠或いは解錠を行うものとしたが、サムターンの作動角度は９０度に限らず４５度のものもあり、また、摘みの遊動角度も任意に設定できるから、連結部材の切欠の円周方向の寸法は任意に設定できる。 In the illustrated embodiment, the thumb turn operating angle is 90 degrees, that is, the dead cam is rotated 90 degrees clockwise or counterclockwise to lock or unlock, but the thumb turn operating angle is There are not only 90 degrees but also 45 degrees, and the floating angle of the knob can be arbitrarily set. Therefore, the circumferential dimension of the notch of the connecting member can be arbitrarily set.

この発明の一実施例による防犯サムターンの鉛直平面による断面図。Sectional drawing by the vertical plane of the security thumb turn by one Example of this invention. この発明の一実施例による防犯サムターンの水平平面による断面図。Sectional drawing by the horizontal plane of the crime prevention thumb turn by one Example of this invention. この発明の一実施例による防犯サムターンの裏面図。The reverse view of the security thumb turn by one Example of this invention. 図２のＩＶ−ＩＶ線による連結部材の断面図で、解錠状態を示す。It is sectional drawing of the connection member by the IV-IV line of FIG. 2, and an unlocked state is shown. 図４と同様の連結部材の断面図で、摘みの遊動の終端を示す。It is sectional drawing of the connection member similar to FIG. 4, and shows the termination | terminus of the freezing movement of a knob. 図４と同様の連結部材の断面図で、施錠状態を示す。It is sectional drawing of the connection member similar to FIG. 4, and shows a locked state.

符号の説明Explanation of symbols

１中筒
２取付ブロック
６摘み
７連結板
８支持筒
９爪
１２内側連結部材
１３サムターン軸
１６外側連結部材
１９捩りばね
２１切欠
２２側端縁
２３係合片 DESCRIPTION OF SYMBOLS 1 Middle cylinder 2 Mounting block 6 Knob 7 Connection board 8 Support cylinder 9 Claw 12 Inner connection member 13 Thumb turn shaft 16 Outer connection member 19 Torsion spring 21 Notch 22 Side edge 23 Engagement piece

Claims

カップ状体の外周面に夫々切欠を形成した内側及び外側連結部材を、筒部が重合する態様で、同軸かつ相対回動可能に連結し、これら内側及び外側連結部材の一方をサムターン軸に、他方を摘みに連結すると共に、内側連結部材内にサムターンの作動トルクより小さい出力トルクの捩りばねを弾装し、この捩りばねの両端に形成され、連結部材の半径方向外方に突出する係合片を、内側及び外側連結部材の切欠を共通に挿通させて連結部材外に延伸させ、一方、一体的に連結されたこれら内側及び外側連結部材、サムターン軸及び摘みを室内側の扉面に回動自在に支承したことを特徴とする防犯サムターン。 The inner and outer connecting members, each having a notch formed on the outer peripheral surface of the cup-shaped body, are connected so as to be coaxial and relatively rotatable in a manner in which the cylindrical portions overlap, and one of these inner and outer connecting members is connected to the thumb turn shaft. The other is connected to the knob, and a torsion spring having an output torque smaller than the operating torque of the thumb turn is mounted in the inner connecting member, and the engaging member is formed at both ends of the torsion spring and projects radially outward of the connecting member The pieces are inserted through the notches of the inner and outer connecting members in common and extended out of the connecting member, while the integrally connected inner and outer connecting members, thumb turn shafts and knobs are turned to the indoor door surface. Crime prevention thumb turn characterized by being supported freely.

上記捩りばねが捩りコイルばねである請求項１記載の防犯サムターン。 The security thumb turn according to claim 1, wherein the torsion spring is a torsion coil spring.

上記内側及び外側連結部材の切欠の側端縁が連結部材の中心軸を見込む角度を同一に設定した請求項１及び２に記載の防犯サムターン。 The crime prevention thumb turn according to claim 1 or 2, wherein the angle at which the side edges of the cutouts of the inner and outer connecting members look at the central axis of the connecting member is set to be the same.