JP3572926B2 - Latch device in drawer - Google Patents

Description

【０００１】
【発明の属する技術分野】
本発明は、キャビネットや机の引出しに設けられるラッチ装置に関する。
【０００２】
【従来の技術】
ラッチ装置を備えるキャビネットの従来例としては、例えば実公平７−２１７８７号公報に記載されたものがある。
【０００３】
この従来技術は、引出し本体の前端部の裏板の前面に前面板を装着して引出しを形成する際、前面板に取り付けた操作部材の作動アームを、引出し本体のラッチ爪アームに連係させるもので、操作部材の操作と連動して、ラッチ爪を回動させることにより、ラッチ爪を家具本体の係合部に係脱させるようになっている。
【０００４】
従って、引出し本体の前端の裏板に前面板を着脱可能に装着した引出しにラッチ装置を設けても、引出しの前面板だけを簡単に交換することができ、様々な状況において、引出しの前面板を色や材質等の異なるものと容易に変えることができる。
【０００５】
【発明が解決しようとする課題】
しかし、この従来技術は、前面板が金属製であることを前提として開発されたものであり、木製の机等において、木製の前面板を備える引出しに適用するためには、前面板の後面に、操作部材とラッチ爪とを連係する複数の軸等を組み込むための、複雑な溝加工を施す必要がある。
【０００６】
また、このラッチ装置では、引出しの前面板の中央部に設けた操作部材と、家具本体の側板の内側に設けた係合部とが大きく離れているため、引手枠内に設けた操作部材と、裏板の後面側部に設けたラッチ爪を連係させるのに、複数の軸を使用している。そのため、構造が複雑となって組立に時間がかかり、また各部品の組立て精度が出ていないと、ラッチ爪が正常に作動せず、引出しの出し入れ時に、騒音を発生することがある。
【０００７】
本発明は、上述のような問題点を解決するために、木製机等の家具における木製の前面板を備える引出しにも、前面板の後面に複雑な溝加工を施すことなく適用することができ、かつ組立を簡単に行え、しかも作動が確実な引出しのラッチ装置を提供することを目的としている。
【０００８】
【課題を解決するための手段】
本発明によると、上記課題は、次のようにして解決される。
(１) 筐体に出し入れ自在に収容した引出し本体の前面をなす着脱自在な前面板に設けた引手用の開口部に、非作動位置と作動位置との間を回動しうるとともに、常時は非作動位置に位置するようにして装着され、かつ後端部が前記前面板の後面側に突出する操作部材と、前記前面板の後面に、左右方向を向くようにして、かつ水平軸回りに回動自在として装着され、内端部からほぼ直角に延出する係止突片が、前記操作部材の後端部に連係されるとともに、外端部にほぼ直角に延出する押圧片が設けられ、前記操作部材の作動位置への移動に伴い、前記押圧片が前方に向かって回動させられるようにした連動杆と、前記前面板の後面の外端部に、垂直軸回りに回動自在として枢着されるとともに、前記押圧片に連係され、かつ常時は、筐体の側板に設けられた係止部材に係合しうる係合位置にあり、前記押圧片の前方への回動に伴って、係止部材との係合を解除する方向に回動させられるようにしたラッチ部材とを備え、かつ前記操作部材の後部を、左右方向に幅広で薄板状の下方を向く湾曲部とするとともに、この下向き湾曲部の下端両側に、外向きにほぼ水平に突出する横向突片を設け、前記連動杆の内端を、操作部材の外側で終端させ、前記横向突片の前面に前記係止突片が当接するようにする。
【０００９】
(２) 上記(１)項において、連動杆の回転中心と、前記係止突片における操作部材の後端部またはその横向突片との距離を、前記操作部材の回転中心と、操作部材の後端部またはその横向突片と前記係止突片との当接部との距離より短くする。
【００１０】
(３) 上記(１)項または(２)項において、連動杆の内端部をクランク状に屈曲させる。
【００１１】
(４) 上記(１)項〜(３)項のいずれかにおいて、前面板の後面に、操作部材及び連動杆を覆うカバー部材を装着する。
【００１２】
【発明の実施の形態】
以下、本発明の一実施形態を、添付図面を参照しながら説明する。
【００１３】
前面に開口部(１)が設けられた筐体(２)には、複数個の引出し(３)(図では上端部の引出しのみ図示)が、上下方向に並べて、出し入れ自在に収容されている。
【００１４】
筐体(２)における内側の側板(４)の前端部には、引出し(３)における後述するラッチ部材(26)が係合する係止部材(５)が固着されている。
【００１５】
引出し(３)は、引出し本体(６)の前端部をなす裏板(７)の前面に、図２に拡大して示す前面板装置(８)を着脱自在に取り付けたものである。
次に、前面板装置(８)について詳述する。
【００１６】
木製の前面板(９)の中央上端部は切り込まれており、この切込部(10)には、合成樹脂材により成形された引手部材(11)が取り付けられている。
引手部材(11)の内部には、図４及び図６に示す非作動位置と、図５及び図７に示す作動位置との間を回動しうる操作部材(12)の前端部が枢着されている。
【００１７】
図２その他に明示されているように、操作部材 (12) の後部は、左右方向に幅広で薄板状の下方を向く湾曲部とされ、この下向き湾曲部の下端両側には、外向きにほぼ水平に突出する横向突片 (15)(15) が設けられている。
この操作部材 (12) の後部は、引手 (11) の垂直基板 (13) に穿設された窓孔 (14) を通って、前面板 ( ９ ) の後側へ突出している。
【００１８】
引手部材(11)の垂直基板(13)の左右の側端部には、下向きほぼＵ字形をなす抜け止め片(16)が設けられており、各抜け止め片(16)の内側方において、垂直基板(13)には、抜け止め片(16)とほぼ等高をなす上下１対の鉤状の挾持片(17)(17)が突設されている。
【００１９】
(18)は、横向きほぼ水平をなすとともに、ほぼ中間部が若干屈曲され、内端部がクランク状に折曲された連動杆であり、引手部材(11)を前面板(９)に取り付けた後に、引手部材(11)の垂直基板(13)に装着されるものである。
連動杆(18)の内端部には下向きの係止突片(19)が突設され、中央部より左側の周面には補強用のリブ(20)が形成されており、外端部には下向きの押圧片(21)が固着されている。
【００２０】
連動杆(18)は、その中央部よりやや右寄りの箇所を、左側の挾持片(17)(17)の間に嵌め込み(図２及び図３参照)、かつ、これよりやや左寄りの箇所を、左側の抜け止め片(16)の下面および前面の間に嵌め込む(図３参照)ことにより、垂直基板(13)の左半部に、回転自在かつ着脱自在に装着される。
【００２１】
連動杆(18)を垂直基板(13)に装着すると、連動杆(18)の内端は操作部材(12)の外側で終端し、係止突片(19)は横向突片(15)の前面に当接するようになり(図４、図５参照)、また、連動杆(18)の中間部に突設された左右１対のストッパ片(22)(22)が、抜け止め片(16)を左右から挟むことにより、連動杆(18)の左右方向への移動が阻止される。
【００２２】
前面板(９)の後面の左右両側の上端部に設けられた凹部(23)には、正面視ほぼ円形をなす基枠(24)と、基枠(24)に設けられた開口(25)に、垂直軸回りに回動自在として枢着されたラッチ部材(26)とを備えるラッチユニット(27)が固着されている。
【００２３】
ラッチ部材(26)は、前面に押圧片(21)が当接する受圧部(28)と、受圧部(28)の基端部から後向きほぼ直角に延出する係合部(29)とからなり、係合部(29)の外面には、係止部材(５)が遊嵌しうる係止孔(30)が穿設されている。
ラッチ部材(30)は、図１、図２及び図６に示す係合位置と、図７に示す解除位置との間を回動することができ、図示を省略したばね等の付勢手段により、係合位置に向けて付勢され、係合部(29)の基端部が開口部(25)に当接することにより、常時は係合位置で保持されている。
【００２４】
基枠(24)の上下２箇所に固着された支持部材(31)には、連動杆(18)の外端部が嵌挿される孔(32)が穿設されている。
前面板(９)の後面にはカバー部材(33)が固着され、引手部材(11)、操作部材(12)、及び連動杆(18)が露呈しないようになっている。
【００２５】
次に本実施例の作動について説明する。
【００２６】
図６に示すように、引出し(３)が閉じており、かつ操作部材(12)が非作動位置にある場合には、ラッチ部材(26)の係合孔(30)が係止部材(５)に係合しているため、このまま引出し(３)を開けることはできない。
【００２７】
引出し(３)を引き出したい場合には、先ず、図５及び図７に示すように、操作部材(12)を作動位置に向けて回動させる。
すると、横向突片(15)により係止突片(19)が前方に押圧され(図５参照)、これに伴って連動杆(18)が回転して、押圧片(21)が前方に移動し、押圧片(21)がラッチ(26)の受圧部(28)を前方に押圧する(図７参照)。
この結果、ラッチ部材(26)は解除位置に向かって回動し、係合孔(30)と係止部材(５)との係合が解除されるので、引出し(３)を開けることができるようになる。
【００２８】
上下の挾持片(17)及び抜け止め片(16)により、連動杆(18)の上下方向及び前後方向への移動が阻止され、かつ連動杆(18)の外端部が支持部材(31)により支持されているので、連動杆(18)は常に円滑に回動し、また、ストッパ片(22)により、連動杆(18)の左右方向への移動が阻止されているので、係止突片(19)は横向突片(15)の直前に、また押圧片(21)は受圧部(28)の直後に常に位置しており、これらが互いに空振りすることはない。
【００２９】
引出し(３)を再度閉じて、操作部材(12)から手を離すと、ラッチ部材(26)が係合位置に復帰して、係止部材(５)と係合するとともに、連動杆(18)と操作部材(12)は上述の作動と逆の作動をして、操作部材(12)が非作動位置に復帰する。
【００３０】
カバー部材(33)を設けてあるので、操作部材(12)の後端部や連動杆(18)等が、引出し本体(６)の前面に接触することがなく、操作部材(12)や連動杆(18)の円滑な作動が妨げられることがない。
【００３１】
この実施形態では、連動杆(18)とラッチユニット(27)を前面板装置(８)の左側にのみ設け、係止部材(５)を筐体(２)内部の左側面にのみ設けているが、右側の挾持片(17)、及び抜け止め片(16)を利用して、上記の連動杆(18)と左右対称形をなす連動杆(図示略)を前面板装置(８)の右側にも設け、筐体(２)内部の右側面に係止部材(５)を取り付けることにより、左右のラッチユニット(27)を同期させて、係止部材(５)に係脱させてもよい。
【００３２】
なお、前面板は木製のものでなくてもよく、例えば金属板を折曲して形成してもよい。
また、抜け止め片(16)や挾持片(17)を、前面板(９)の後面に直接突設することもある。
【００３３】
【発明の効果】
本発明によれば、次のような効果を奏することができる。
(ａ) 引出しに設けたラッチ部材を、筐体に設けた係止部材に係脱させることにより、常時は引出しを筐体から抜け出さないようにできるとともに、必要な場合には引出しを筐体から抜き出すことができる。
また、引出しの前面板を、色や材質の異なる他の前面板に簡単に交換することができる。
さらに、部品点数が少ないので組立てが容易である。
【００３４】
(ｂ) 前面板が木製の場合でも、前面板に複雑な溝加工を施す必要がなく、簡単に製造することができる。
また、ラッチ装置の可動部品を全て前面板に装着したので、前面板を引出しから取り外せば、ラッチ装置のメンテナンスを容易に行うことができる。
【００３５】
(ｃ) 連動杆と操作部材が互いに別体となっているので、連動杆に破損等が生じた場合には、連動杆のみを簡単に交換することができる。
【００３６】
(ｄ) 操作部材の後端部に横向突片を外向きに突設するとともに、連動杆の内端を操作部材の外側で終端させて、横向突片と係止突片とを連係させてあるので、連動杆と操作部材とが互いに干渉することがない。
そのため、連動杆と操作部材を円滑に作動させることができるとともに、連動杆の組み付けがより簡単になる（以上請求項１）。
【００３７】
(ｅ) 請求項２記載の発明によると、操作部材を僅かに回転させただけで、連動杆が大きく回動して、押圧片がラッチ部材を確実に回動させるようになるので、係止部材とラッチ部材との係合を確実に解除できるようになる。
【００３８】
(ｆ) 請求項３記載の発明によると、操作部材の後端部（まはた横向突片）から力を受ける連動杆の内端部の強度が向上するので、連動杆を合成樹脂材等で形成した場合でも、連動杆の内端部が撓んだり捻られたりするおそれが小さく、操作部材からの力は、連動杆を回転させる力として確実に伝達される。
【００３９】
(ｇ) 請求項４記載の発明によると、操作部材の後端部や連動杆等が、引出し本体の前面に接触することがないので、操作部材や連動杆の円滑な作動が妨げられることはない。
【図面の簡単な説明】
【図１】本発明の一実施形態の筐体と引出しを斜め後方から見た斜視図である。
【図２】同じく引出しの前面板の一部を切り欠いて後方から見た拡大斜視図である。
【図３】同じく引手部材への連動杆の装着状態を示す要部の一部縦断拡大側面図である。
【図４】同じく非作動状態における前面板の上部の拡大縦断側面図である。
【図５】同じく作動状態における前面板の上部の拡大縦断側面図である。
【図６】同じく非作動状態における引出し及び筐体の前端部の拡大横断平面図である。
【図７】同じく作動状態における引出し及び筐体の前端部の拡大横断平面図である。
【符号の説明】
(１)開口部
(２)筐体
(３)引出し
(４)側板
(５)係止部材
(６)引出し本体
(７)裏板
(８)前面板装置
(９)前面板
(10)切込部
(11)引手部材
(12)操作部材
(13)垂直基板
(14)窓孔
(15)横向突片
(16)抜け止め片
(17)挾持片
(18)連動杆
(19)係止突片
(20)リブ
(21)押圧片
(22)ストッパ片
(23)凹部
(24)基枠
(25)開口
(26)ラッチ部材
(27)ラッチユニット
(28)受圧部
(29)係合部
(30)係止孔
(31)支持部材
(32)孔
(33)カバー部材[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a latch device provided in a drawer of a cabinet or a desk.
[0002]
[Prior art]
As a conventional example of a cabinet provided with a latch device, there is one described in Japanese Utility Model Publication No. 7-21787, for example.
[0003]
In this prior art, when a drawer is formed by attaching a front plate to a front surface of a back plate at a front end portion of a drawer body, an operating arm of an operating member attached to the front plate is linked to a latch claw arm of the drawer body. By rotating the latch claw in conjunction with the operation of the operation member, the latch claw is disengaged from the engaging portion of the furniture body.
[0004]
Therefore, even if the drawer in which the front plate is detachably attached to the back plate at the front end of the drawer body is provided with the latch device, only the front plate of the drawer can be easily replaced, and in various situations, the front plate of the drawer can be replaced. Can be easily changed to those having different colors and materials.
[0005]
[Problems to be solved by the invention]
However, this prior art was developed on the assumption that the front plate is made of metal, and in order to be applied to a drawer provided with a wooden front plate at a wooden desk or the like, the rear plate of the front plate must be provided. In addition, it is necessary to perform complicated groove processing for incorporating a plurality of shafts or the like that link the operating member and the latch claw.
[0006]
Further, in this latch device, since the operating member provided in the center of the front plate of the drawer and the engaging portion provided inside the side plate of the furniture main body are largely separated, the operating member provided in the pull frame is A plurality of shafts are used to link latch claws provided on the rear side of the back plate. Therefore, the structure becomes complicated, it takes time to assemble, and if the assembling accuracy of each part is not high, the latch claw may not operate normally, and noise may be generated when the drawer is taken in and out.
[0007]
The present invention can also be applied to drawers having a wooden front plate in furniture such as a wooden desk without solving complicated grooves on the rear surface of the front plate in order to solve the above-described problems. Another object of the present invention is to provide a drawer latch device that can be easily assembled and that can be operated reliably.
[0008]
[Means for Solving the Problems]
According to the present invention, the above-mentioned problem is solved as follows.
(1) An opening for a handle provided on a detachable front plate forming the front surface of a drawer body which is housed so as to be freely inserted into and removed from the housing, can be turned between a non-operation position and an operation position. An operating member mounted so as to be located at the inoperative position, and a rear end portion protruding toward the rear surface side of the front plate, and a rear surface of the front plate, facing left and right, and around a horizontal axis. A locking projection, which is mounted rotatably and extends substantially at a right angle from the inner end, is linked to the rear end of the operating member, and a pressing piece extending at a substantially right angle is provided at the outer end. An interlocking rod that allows the pressing piece to rotate forward with the movement of the operating member to the operating position, and an outer end of the rear surface of the front plate that rotates about a vertical axis. It is pivoted freely, is linked to the pressing piece, and is always In a position where it can be engaged with a locking member provided on the plate, and can be rotated in a direction of releasing the engagement with the locking member as the pressing piece is rotated forward. And a rear portion of the operation member is a thin, sheet-like, downwardly-bent curved portion that is wide in the left-right direction. A protruding piece is provided, and the inner end of the interlocking rod is terminated outside the operating member so that the locking protruding piece abuts on the front surface of the lateral protruding piece.
[0009]
(2) In the above item (1), the distance between the rotation center of the interlocking rod and the rear end of the operating member in the locking projection or the lateral projection thereof is determined by the rotation center of the operation member and the operating member. It is shorter than the distance between the rear end portion or the laterally projecting piece and the contact portion between the locking projecting piece.
[0010]
(3) In the above item (1) or (2), the inner end of the interlocking rod is bent in a crank shape.
[0011]
(4) In any one of the above items (1) to (3), a cover member for covering the operation member and the interlocking rod is attached to the rear surface of the front plate.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0013]
A plurality of drawers (3) (only the drawer at the upper end is shown in the figure) is housed in a housing (2) having an opening (1) on the front side thereof, which is arranged in the vertical direction and can be freely taken in and out. .
[0014]
At the front end of the inner side plate (4) of the housing (2), a locking member (5) with which a latch member (26) described later in the drawer (3) is engaged is fixed.
[0015]
The drawer (3) has a front plate device (8) enlarged in FIG. 2 detachably attached to the front surface of a back plate (7) forming the front end of the drawer body (6).
Next, the front panel device (8) will be described in detail.
[0016]
The upper end of the center of the wooden front plate (9) is cut, and a pull member (11) formed of a synthetic resin material is attached to the cut portion (10).
A front end of an operating member (12) that can rotate between an inoperative position shown in FIGS. 4 and 6 and an operating position shown in FIGS. 5 and 7 is pivotally mounted inside the pull member (11). Have been.
[0017]
As clearly shown in FIG. 2 and other figures, the rear portion of the operating member (12) is a thin plate-shaped downwardly-bent curved portion that is wide in the left-right direction. Horizontal projecting pieces (15) (15) projecting horizontally are provided.
The rear portion of the operation member (12) protrudes to the rear side of the front plate ( 9 ) through a window hole (14) formed in the vertical substrate (13) of the handle (11) .
[0018]
At the left and right side ends of the vertical board (13) of the pull member (11), there are provided retaining pieces (16) that are substantially U-shaped downward, and inside each retaining piece (16), The vertical board (13) has a pair of upper and lower hook-shaped holding pieces (17) (17) projecting substantially at the same height as the retaining piece (16).
[0019]
(18) is an interlocking rod that is substantially horizontal in the horizontal direction, has a slightly bent substantially middle portion, and has an inner end bent in a crank shape, and has the pull member (11) attached to the front plate (9). Later, it is mounted on the vertical substrate (13) of the pull member (11).
At the inner end of the interlocking rod (18), a downward locking projection (19) is protruded, and a reinforcing rib (20) is formed on the peripheral surface on the left side from the center, and the outer end is formed. A downward pressing piece (21) is fixed to the panel.
[0020]
The interlocking rod (18) is fitted at a position slightly to the right from the center between the holding pieces (17) and (17) on the left side (see FIGS. 2 and 3), and at a position slightly to the left from this, By being fitted between the lower surface and the front surface of the left retaining piece (16) (see FIG. 3), it is rotatably and detachably mounted on the left half of the vertical substrate (13).
[0021]
When the interlocking rod (18) is mounted on the vertical board (13), the inner end of the interlocking rod (18) terminates outside the operating member (12), and the locking projection (19) is the same as the horizontal projection (15). 4 and 5, and a pair of left and right stopper pieces (22) (22) protruding from an intermediate portion of the interlocking rod (18) is attached to the retaining piece (16). ) From the left and right, the movement of the interlocking rod (18) in the left and right direction is prevented.
[0022]
Recesses (23) provided at the upper left and right ends of the rear surface of the front plate (9) have a substantially circular base frame (24) and an opening (25) provided in the base frame (24). A latch unit (27) having a latch member (26) pivotally mounted so as to be rotatable about a vertical axis is fixed thereto.
[0023]
The latch member (26) includes a pressure receiving portion (28) with which the pressing piece (21) abuts on the front surface, and an engaging portion (29) extending rearward from the base end of the pressure receiving portion (28) at a substantially right angle. On the outer surface of the engaging portion (29), a locking hole (30) into which the locking member (5) can be loosely fitted is formed.
The latch member (30) can rotate between an engagement position shown in FIGS. 1, 2, and 6 and a release position shown in FIG. 7, and is provided by a biasing means such as a spring (not shown). Are biased toward the engagement position, and the base end of the engagement portion (29) abuts on the opening (25), whereby the engagement portion (29) is normally held at the engagement position.
[0024]
A hole (32) into which the outer end of the interlocking rod (18) is inserted is formed in the support member (31) fixed to the upper and lower portions of the base frame (24).
A cover member (33) is fixed to the rear surface of the front plate (9) so that the pull member (11), the operating member (12), and the interlocking rod (18) are not exposed.
[0025]
Next, the operation of this embodiment will be described.
[0026]
As shown in FIG. 6, when the drawer (3) is closed and the operating member (12) is in the inoperative position, the engaging hole (30) of the latch member (26) is engaged with the locking member (5). ), The drawer (3) cannot be opened as it is.
[0027]
When it is desired to pull out the drawer (3), first, as shown in FIGS. 5 and 7, the operating member (12) is turned toward the operating position.
Then, the locking projecting piece (19) is pressed forward by the horizontal projecting piece (15) (see FIG. 5), whereby the interlocking rod (18) rotates, and the pushing piece (21) moves forward. Then, the pressing piece (21) presses the pressure receiving portion (28) of the latch (26) forward (see FIG. 7).
As a result, the latch member (26) rotates toward the release position, and the engagement between the engagement hole (30) and the locking member (5) is released, so that the drawer (3) can be opened. Become like
[0028]
The upper and lower holding pieces (17) and the retaining pieces (16) prevent the interlocking rod (18) from moving in the vertical direction and the front-rear direction, and the outer end of the interlocking rod (18) is supported by the support member (31). , The interlocking rod (18) always rotates smoothly, and the stopper piece (22) prevents the interlocking rod (18) from moving in the left-right direction. The piece (19) is always located immediately before the horizontal protruding piece (15), and the pressing piece (21) is always located immediately after the pressure receiving portion (28), so that they do not miss each other.
[0029]
When the drawer (3) is closed again and the hand is released from the operating member (12), the latch member (26) returns to the engagement position, engages with the locking member (5), and engages with the interlocking rod (18). ) And the operation member (12) perform an operation opposite to the above operation, and the operation member (12) returns to the non-operation position.
[0030]
Since the cover member (33) is provided, the rear end of the operating member (12) and the interlocking rod (18) do not come into contact with the front surface of the drawer body (6). The smooth operation of the rod (18) is not hindered.
[0031]
In this embodiment, the interlocking rod (18) and the latch unit (27) are provided only on the left side of the front panel device (8), and the locking member (5) is provided only on the left side inside the housing (2). However, by using the right holding piece (17) and the retaining piece (16), an interlocking rod (not shown), which is symmetrical to the above-mentioned interlocking rod (18), is connected to the right side of the front plate device (8). The left and right latch units (27) may be synchronized and disengaged from the locking member (5) by attaching the locking member (5) to the right side inside the housing (2). .
[0032]
The front plate may not be made of wood, and may be formed by, for example, bending a metal plate.
Also, the retaining piece 16 and the holding piece 17 may be directly provided on the rear surface of the front plate 9.
[0033]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(a) By engaging and disengaging the latch member provided on the drawer with the locking member provided on the housing, the drawer can be prevented from always coming out of the housing, and if necessary, the drawer can be removed from the housing. Can be extracted.
Further, the front plate of the drawer can be easily replaced with another front plate having a different color or material.
Further, since the number of parts is small, assembly is easy.
[0034]
(b) Even when the front plate is made of wood, it is not necessary to form a complicated groove on the front plate, and the front plate can be easily manufactured.
Further, since all the movable parts of the latch device are mounted on the front plate, maintenance of the latch device can be easily performed by removing the front plate from the drawer.
[0035]
(c) Since the interlocking rod and the operation member are separate from each other, if the interlocking rod is damaged or the like, only the interlocking rod can be easily replaced.
[0036]
(d) At the rear end of the operating member, a horizontal protruding piece is projected outward, and the inner end of the interlocking rod is terminated outside the operating member, so that the horizontal protruding piece and the locking protruding piece are linked. Therefore, the interlocking rod and the operating member do not interfere with each other.
Therefore, the interlocking rod and the operation member can be smoothly operated, and the assembling of the interlocking rod is further simplified (claim 1).
[0037]
(e) According to the second aspect of the present invention, when the operating member is slightly rotated, the interlocking rod is largely rotated, and the pressing piece surely rotates the latch member. The engagement between the member and the latch member can be reliably released.
[0038]
(f) According to the third aspect of the present invention, the strength of the inner end of the interlocking rod which receives a force from the rear end (or the laterally projecting piece) of the operating member is improved, so that the interlocking rod is made of synthetic resin or the like. In this case, the inner end of the interlocking rod is less likely to bend or twist, and the force from the operating member is reliably transmitted as a force for rotating the interlocking rod.
[0039]
(g) According to the fourth aspect of the present invention, the rear end of the operating member, the interlocking rod, and the like do not contact the front surface of the drawer main body, so that the smooth operation of the operating member and the interlocking rod is prevented. Absent.
[Brief description of the drawings]
FIG. 1 is a perspective view of a housing and a drawer according to an embodiment of the present invention as viewed obliquely from behind.
FIG. 2 is an enlarged perspective view of the drawer viewed from the rear with a part of a front plate cut away.
FIG. 3 is a partially longitudinal enlarged side view of a main part showing a state in which an interlocking rod is attached to a pull member.
FIG. 4 is an enlarged vertical sectional side view of an upper portion of the front plate in a non-operating state.
FIG. 5 is an enlarged vertical sectional side view of an upper portion of the front plate in the operating state.
FIG. 6 is an enlarged cross-sectional plan view of the drawer and the front end of the housing in the non-operating state.
FIG. 7 is an enlarged cross-sectional plan view of the drawer and the front end of the housing in the operating state.
[Explanation of symbols]
(1) Opening
(2) Housing
(3) Drawer
(4) Side plate
(5) Locking member
(6) Drawer body
(7) Back plate
(8) Front panel device
(9) Front panel
(10) Notch
(11) Pull member
(12) Operation members
(13) Vertical board
(14) Window hole
(15) Horizontal projection
(16) Retaining piece
(17) Nipping piece
(18) Interlocking rod
(19) Locking projection
(20) Rib
(21) Pressing piece
(22) Stopper piece
(23) recess
(24) Base frame
(25) Opening
(26) Latch member
(27) Latch unit
(28) Pressure receiving part
(29) Engagement part
(30) Lock hole
(31) Support member
(32) Hole
(33) Cover member

Claims (4)

筐体に出し入れ自在に収容した引出し本体の前面をなす着脱自在な前面板に設けた引手用の開口部に、非作動位置と作動位置との間を回動しうるとともに、常時は非作動位置に位置するようにして装着され、かつ後端部が前記前面板の後面側に突出する操作部材と、
前記前面板の後面に、左右方向を向くようにして、かつ水平軸回りに回動自在として装着され、内端部からほぼ直角に延出する係止突片が、前記操作部材の後端部に連係されるとともに、外端部にほぼ直角に延出する押圧片が設けられ、前記操作部材の作動位置への移動に伴い、前記押圧片が前方に向かって回動させられるようにした連動杆と、
前記前面板の後面の外端部に、垂直軸回りに回動自在として枢着されるとともに、前記押圧片に連係され、かつ常時は、筐体の側板に設けられた係止部材に係合しうる係合位置にあり、前記押圧片の前方への回動に伴って、係止部材との係合を解除する方向に回動させられるようにしたラッチ部材とを備え、かつ前記操作部材の後部を、左右方向に幅広で薄板状の下方を向く湾曲部とするとともに、この下向き湾曲部の下端両側に、外向きにほぼ水平に突出する横向突片を設け、前記連動杆の内端を、操作部材の外側で終端させ、前記横向突片の前面に前記係止突片が当接するようにしたことを特徴とする引出しにおけるラッチ装置。An opening for a handle provided on a detachable front plate that forms the front of the drawer body that is housed in the housing so that it can be freely inserted into and removed from the housing. An operating member mounted so as to be positioned at a rear end thereof and projecting toward a rear surface side of the front plate,
A rear end of the operating member is provided on the rear surface of the front plate so as to face in the left-right direction and to be rotatable about a horizontal axis and extend substantially at a right angle from an inner end. A pressing piece extending substantially at a right angle is provided at the outer end portion, and the pressing piece is rotated forward with the movement of the operating member to the operating position. Rods,
At the outer end of the rear surface of the front plate, it is rotatably pivoted around a vertical axis, is linked to the pressing piece, and normally engages with a locking member provided on a side plate of the housing. A latch member that is in a position where the pressing piece can be rotated forward in a direction in which the pressing piece is disengaged from the locking member. The rear part is a wide, thin plate-shaped downwardly curved portion in the left-right direction, and at both lower ends of the downwardly curved portion, laterally projecting pieces projecting outward in a substantially horizontal manner are provided, and the inner end of the interlocking rod is provided. A latching device in a drawer, wherein the latching projection is terminated on the outside of the operating member so that the locking projection contacts the front surface of the lateral projection. 連動杆の回転中心と、前記係止突片と操作部材の後端部またはその横向突片との距離を、前記操作部材の回転中心と、操作部材の後端部または横向突片と前記係止突片との当接部との距離より短くしたことを特徴とする請求項１記載の引出しにおけるラッチ装置。The distance between the center of rotation of the interlocking rod and the distance between the locking projection and the rear end of the operating member or the lateral projection thereof is determined by the rotation center of the operating member, the rear end of the operating member or the horizontal projection, and 2. The latch device according to claim 1, wherein the distance between the stop portion and the contact portion is shorter. 連動杆の内端部をクランク状に屈曲させたことを特徴とする請求項１または２記載の引出しにおけるラッチ装置。The latch device according to claim 1 or 2, wherein the inner end of the interlocking rod is bent in a crank shape. 前面板の後面に、操作部材及び連動杆を覆うカバー部材を装着したことを特徴とする請求項１〜３のいずれかに記載の引出しにおけるラッチ装置。The latch device according to any one of claims 1 to 3, wherein a cover member that covers the operation member and the interlocking rod is mounted on a rear surface of the front plate.

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