JP4430469B2 - Latch device - Google Patents

Latch device Download PDF

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JP4430469B2
JP4430469B2 JP2004201050A JP2004201050A JP4430469B2 JP 4430469 B2 JP4430469 B2 JP 4430469B2 JP 2004201050 A JP2004201050 A JP 2004201050A JP 2004201050 A JP2004201050 A JP 2004201050A JP 4430469 B2 JP4430469 B2 JP 4430469B2
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claw
sliding body
striker
housing
pin
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JP2006022543A (en
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淳 佐野
努 田中
見 林
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Nifco Inc
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Nifco Inc
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本発明は、第1部材(例えば、箱状基体)に第2部材(例えば、蓋等の可動体)を着脱可能に係止するようなときに用いられるラッチ装置のうち、特に最初の押し操作により被係脱部材であるストライカーを係止し、次の押し操作によりストライカーを係止解除するプッシュ・プッシュ係止機構(これはプッシュロック・プッシュオープン機構と称されることもある、以下、同じ)からなるラッチ装置に関するものである。   The present invention is the first push operation among latch devices used when a second member (for example, a movable body such as a lid) is detachably locked to a first member (for example, a box-shaped base). A push-push locking mechanism that locks the striker that is a member to be engaged and disengaged, and unlocks the striker by the next pushing operation (this may be referred to as a push-lock / push-open mechanism, hereinafter the same) ).

6は特許文献1に開示されているラッチ装置を示している。同図のラッチ装置は、一端側を開口したハウジング2と、ストライカー62と当接する突当部32及びカム溝5を有し、ハウジング2内に配置されてばね部材45の付勢力に抗して移動される摺動体30と、先端側の爪39及び基端側のピン38cを有し、摺動体30に回転可能に枢支されている係合爪37と、カム溝5に沿ってトレースするピン部材6とを備えている。ここで、係合爪37は、摺動体30の対応部に対し上下中間より下側に設けられた軸部37aを嵌合した状態で枢支されていて、摺動体30の位置移動により、同(a)のごとく摺動体30内にほぼ退避した係止解除位置と、同(b)のごとく爪39を摺動体30内から突出してストライカー62を押さえる係止位置とに切り換えられる。係止解除位置では、摺動体30がばね部材45の付勢力でハウジング2の入口側に移動されると共に、係合爪37がハウジング2内に設けられたリブ28にピン38cを乗り上げることでその状態を保つ。係止位置では、摺動体30がストライカー62の押し力によりばね部材45の付勢力に抗して奥側に移動され、該移動後の位置にカム溝5及びピン部材6の係合を介し維持されると共に、係合爪37がピン38cをリブ28の張出部から低くなった部分に移動し、かつ傾動して爪39を摺動体30内から突出する。換言すると、以上のラッチ装置は、係合爪37が摺動体30に対するストライカー62の押し力により係止解除位置から係止位置に切り換えられ、摺動体30に対するストライカー62の次の押し力により係止解除する、いわゆるプッシュ・プッシュ係止機構からなる。このような構造は特許文献2でも同様である。 FIG. 6 shows a latch device disclosed in Patent Document 1. The latch device shown in FIG. 1 has a housing 2 that is open at one end, an abutting portion 32 that abuts against the striker 62 , and a cam groove 5. The latch device is disposed in the housing 2 and resists the biasing force of the spring member 45. Trace along the cam groove 5 and the engaging claw 37 that has the claw 39 to be moved, the claw 39 on the distal end side, and the pin 38c on the proximal end side, and is pivotally supported by the sliding body 30. And a pin member 6. Here, the engaging claw 37 is pivotally supported in a state in which the shaft portion 37 a provided below the middle of the upper and lower sides is fitted to the corresponding portion of the sliding body 30. As shown in (a), the position is switched between the unlocking position almost retracted in the sliding body 30 and the locking position where the claw 39 protrudes from the sliding body 30 and presses the striker 62 as shown in (b). At the unlocking position, the sliding body 30 is moved to the inlet side of the housing 2 by the urging force of the spring member 45, and the engaging claw 37 rides on the pin 38c on the rib 28 provided in the housing 2, thereby Keep state. In the locking position, the sliding body 30 is moved to the back side against the biasing force of the spring member 45 by the pushing force of the striker 62, and is maintained in the position after the movement through the engagement of the cam groove 5 and the pin member 6. At the same time, the engaging claw 37 moves the pin 38 c to a portion lower than the protruding portion of the rib 28 and tilts to project the claw 39 from the inside of the sliding body 30. In other words, in the above latch device, the engaging claw 37 is switched from the unlocking position to the locking position by the pressing force of the striker 62 against the sliding body 30, and is locked by the next pressing force of the striker 62 against the sliding body 30. It consists of a so-called push-push locking mechanism that releases. Such a structure is the same in Patent Document 2.

特開2004−137725号公報JP 2004-137725 A 特開2001−262915号公報JP 2001-262915 A

上記したようなラッチ装置は、最初の押し操作により係止し、次の押し操作により係止解除するため使い勝手に優れ、色々な装置や設備などに利用されている。そして、用途によっては、例えば、超低温と言うような過酷な環境下での使用において次のような作動不良を生じる虞があることが分かった。すなわち、その作動不良は、摺動体30が図6(a)の初期位置から(b)の押し込め方向へ移動されても、係合爪37が設計通りに回転して係止状態に切り換えられず、摺動体30内に収まっている係止解除状態に維持されるという現象である。この現象は、例えば、係合爪37の枢支部(軸部37aと軸穴)が超低温におかれると摺動抵抗を増大し、回転し難くなることが発生要因の一つである。そこで、本発明の目的は、以上のような不具合を解消し、過酷な環境下での使用においても作動不良を生じないようにして、品質向上と用途拡大を図ることにある。 Since the latch device as described above is locked by the first pushing operation and unlocked by the next pushing operation, it is excellent in usability and is used in various devices and facilities. And it turned out that there exists a possibility that the following malfunction may be produced in use under the severe environment called ultra-low temperature depending on a use, for example. That is, the malfunction is caused by the fact that the engaging claw 37 does not rotate and is not switched to the locked state even if the sliding body 30 is moved from the initial position in FIG. This is a phenomenon in which the unlocked state kept in the sliding body 30 is maintained. One of the causes of this phenomenon is that, for example, when the pivoting portion (shaft portion 37a and shaft hole) of the engaging claw 37 is placed at an ultra-low temperature, the sliding resistance increases and it becomes difficult to rotate. Accordingly, an object of the present invention is to improve the quality and expand the application by eliminating the above-described problems and preventing the occurrence of malfunction even when used in a harsh environment.

上記した目的を達成するため本願発明は、ストライカーを一端開口より挿入可能なハウジングと、前記ストライカーと当接する突当部及び両側のカム溝を有し、前記ハウジング内に配置されてばね部材の付勢力に抗して移動される摺動体と、
先端側の爪及び基端両側のピンを有し、前記摺動体に回転可能に枢支されて前記爪が該摺動体内から突出して前記ストライカーを係止する係止位置と該摺動体内にほぼ退避した係止解除位置とに切り換えられる係合爪と、前記カム溝に沿ってトレースするピン部材とを備え、前記摺動体が前記ストライカーを介し押圧されて前記ばね部材の付勢力に抗し移動されると、前記カム溝及びピン部材を介しその移動後の位置に保たれ、かつ前記係合爪が係止解除位置から係止位置に切り換えられるプッシュ・プッシュ係止機構からなるラッチ装置を対象とし、次のような構成を工夫したものである。
すなわち、前記ハウジングは、前記係合爪の基端両側の前記ピンに当接して前記係合爪を係止位置から係止解除位置に切り換えるリブと共に、前記係合爪が回転し難くなって前記摺動体と共に前記ばね部材の付勢力に抗し移動されても係止解除状態から係止状態に切り換えられないときに、前記ピンと当接して前記係合爪を係止解除位置から係止位置に切り換えるテーパー面を有している構成である。
The present onset bright order to achieve the above object, a housing insertable from one end opening of the striker, said has a striker abutment for abutting portion and both sides of the cam groove, the spring member disposed within said housing A sliding body that is moved against the biasing force;
There is a claw on the distal end side and pins on both sides of the proximal end, and is pivotally supported by the sliding body so that the claw protrudes from the sliding body and locks the striker. An engaging claw that is switched to a substantially retracted unlocking position; and a pin member that traces along the cam groove, and the sliding body is pressed through the striker to resist the biasing force of the spring member. A latch device comprising a push-push locking mechanism that is maintained in the position after the movement through the cam groove and the pin member when moved, and the engaging claw is switched from the unlocking position to the locking position; The target is the following configuration.
That is, the housing abuts against the pins on both sides of the base end of the engaging claw and switches the engaging claw from the locked position to the unlocked position, and the engaging claw is difficult to rotate. Even when the spring member is moved against the biasing force of the spring member together with the sliding body, the engaging claw is brought into contact with the pin from the unlocking position to the locking position when it is not switched from the unlocking state to the locking state. Ru configuration der having a tapered surface for switching.

以上の発明において、係合爪側ピンと当接して係合爪を係止解除位置から係止位置に切換可能にするテーパー面により、課題に説明したような過酷な環境下において発生していた作動不良を機械的に確実に解消できるようにする。 In the above inventions, Ri by the tapered surface to allow switching from unlocked position the engagement claw in contact with the engaging claw side pin against the locking position, it occurs in a severe environment such as described challenges It is possible to mechanically resolve the malfunction that has been caused.

以上の本発明は、係合爪側のピンに対応してハウジング側にテーパー面を付設するだけで、課題に挙げた過酷な環境下での作動不良を確実に解消でき、それにより品質向上及び用途拡大を達成できる。また、前記係合爪がピンを基端両側に形成していると共に、ハウジングが前記両ピンに対応してテーパー面形成していることから、例えば、装置が大型になっても安定した作動切換を維持できるようにする。 The present invention as described above can reliably eliminate the malfunction under the severe environment mentioned in the problem only by attaching a tapered surface on the housing side corresponding to the pin on the engagement claw side, thereby improving the quality and Can expand applications. Further, the engagement claw with forms the base end sides of the pins, since the housing is formed a tape supermarkets surfaces corresponding to said two pins, for example, stable even device becomes large The operation switching can be maintained.

図1〜図5は第1実施例のラッチ装置を示している。以下の説明では、第1実施例のラッチ装置及び組立とその作動を詳述する。 Figures 1-5 are shown the latching device of the first embodiment. In the description of the following will be described the operation and latching device and assembly of the first embodiment.

(第1実施例)図1はラッチ装置を係合爪の係止位置で示し、同(a)は上面図、同(b)は(a)のA−A線に沿って断面した図、同(c)は(a)のB方向から見た正面図、同(d)は下面図である。図2はラッチ装置の模式作動図であり、同(a)は係合爪の係止解除位置で、同(b)は係合爪の係止位置で示している。図3は図1(d)のC−C線に沿って断面したハウジング側のテーパー面と係合爪との関係を示す模式作動図である。図4(a)はラッチ装置をGセンサの作動時の状態で示し、図4(b)はストライカーを係止解除する際の切換作動を示す模式作動図である。図5はラッチ装置の部材同士の関係を示す概略分解図である。なお、各図において、図6のラッチ装置と同じか類似する部材及び部位に同一符号を付している。 (First Embodiment) FIG. 1 shows a latch device in a locking position of an engaging claw, wherein (a) is a top view, and (b) is a cross-sectional view taken along line AA of (a), (C) is a front view seen from the B direction of (a), and (d) is a bottom view. 2A and 2B are schematic operation diagrams of the latch device, in which FIG. 2A shows an engagement claw unlocking position, and FIG. 2B shows an engagement claw locking position. FIG. 3 is a schematic operation diagram showing the relationship between the housing-side tapered surface and the engaging claw, which is taken along the line CC in FIG. FIG. 4A shows the latch device in a state when the G sensor is operated, and FIG. 4B is a schematic operation diagram showing a switching operation when releasing the striker. FIG. 5 is a schematic exploded view showing the relationship between the members of the latch device. In addition, in each figure, the same code | symbol is attached | subjected to the member and site | part which are the same as that of the latch apparatus of FIG. 6, or a part.

図1〜図5に示されるラッチ装置1は、ストライカー62を一端開口より挿入可能なハウジング2と、摺動体30に係合爪37を枢支したラッチ部材3と、一端側を支点として上下動する応動体4と、ラッチ部材3をハウジング2の一端開口側へ付勢するばね部材45と、該応動体40を付勢する付勢部材46とを備えている。そして、ラッチ装置1は、例えば、図2(a)のごとく箱状基体60に取り付けられ、可動体61に設けられているストライカー62を係脱する。つまり、ラッチ装置1は、例えば、可動体61が閉位置方向へ付勢されている態様において、可動体61が付勢力に抗して閉位置方向へ押されるとストライカー62を介し係止され、更に同方向へ押して手を離すと係止解除されるプッシュ・プッシュ係止機構からなる。   The latch device 1 shown in FIGS. 1 to 5 includes a housing 2 into which a striker 62 can be inserted from one end opening, a latch member 3 in which an engaging claw 37 is pivotally supported on a sliding body 30, and a vertical movement with one end side as a fulcrum. And a spring member 45 that biases the latch member 3 toward the one end opening side of the housing 2 and a biasing member 46 that biases the responder 40. The latch device 1 is attached to the box-shaped base body 60 as shown in FIG. 2A, for example, and engages and disengages the striker 62 provided on the movable body 61. That is, for example, in a mode in which the movable body 61 is biased toward the closed position, the latch device 1 is locked via the striker 62 when the movable body 61 is pushed against the biasing force toward the closed position. Furthermore, it comprises a push-push locking mechanism that is unlocked when it is pushed in the same direction and released.

ここで、応動体4及び付勢部材46は、ラッチ装置1が振動を受け易いような仕様に採用されて、ラッチ部材3が振動等により誤作動を生じないようにするGセンサと称されているものであるが、省略されることもある。ラッチ装置1の用途は、上記した文献1,2と同じであり、箱状基体に対し蓋等の可動体61を着脱可能に係止するようなときに用いられるが、ラッチ装置1を可動体側に取り付けて、箱状基体側に設けられているストライカーを係脱する態様であってもよい。各部材の細部は以下の通りである。   Here, the responder 4 and the urging member 46 are adopted as specifications that make the latch device 1 susceptible to vibration, and are called G sensors that prevent the latch member 3 from malfunctioning due to vibration or the like. However, it may be omitted. The use of the latch device 1 is the same as that of the above-described documents 1 and 2, and is used when the movable body 61 such as a lid is detachably locked to the box-shaped base. It is possible to attach and disengage the striker provided on the box-shaped substrate side. Details of each member are as follows.

ハウジング2は、図1と図5のごとく内部が前後壁20,21と、両側壁22と、底壁23とで概略区画されて、一端側つまり上側を開口した筒形となっている。このうち、前壁20には、左右中間に位置してラッチ部材3(摺動体30)の摺動範囲を規制するガイド溝20aと、内面両側に突設されてラッチ部材3(係合爪37)を係止解除方向へ回動可能にするリブ28とが設けられている。リブ28は、図2のごとく最も高くなった平坦状張出部分と、該張出部分の上下部に接続されて次第に低くなっている傾斜部分とからなる。なお、符号20bは該リブ28を形成するための肉逃げ用凹部である。後壁21の内面には、規制用縦リブ29がピン部材6のU形に対応して対に突設されている。縦リブ29は、底壁23から上下中間位置付近まで延び、又、下側が一段大きく張り出した状態に設けられて、ピン部材6のU形両側部6bを両側壁22の対応内側面との間に位置規制する。両側壁22には、スリットで区画されて上側を外へ張り出している取付用弾性係止爪27が設けられている。両側壁22の内面には、上下方向に延びている凹部22b及びガイド凹部22cがそれぞれ対向して設けられている。   As shown in FIGS. 1 and 5, the housing 2 has a cylindrical shape in which the inside is roughly partitioned by front and rear walls 20, 21, both side walls 22, and a bottom wall 23, and one end side, that is, the upper side is opened. Among these, the front wall 20 is located in the middle of the left and right, and guide grooves 20a for restricting the sliding range of the latch member 3 (sliding body 30) and the latch member 3 (engaging claws 37) projecting on both sides of the inner surface. And a rib 28 that can be rotated in the unlocking direction. As shown in FIG. 2, the rib 28 includes a flat projecting portion that is the highest, and an inclined portion that is connected to the upper and lower portions of the projecting portion and gradually decreases. Reference numeral 20 b denotes a meat escape recess for forming the rib 28. On the inner surface of the rear wall 21, regulating vertical ribs 29 are provided in pairs so as to correspond to the U shape of the pin member 6. The vertical rib 29 extends from the bottom wall 23 to the vicinity of the upper and lower intermediate positions, and is provided in a state where the lower side protrudes one step larger, so that the U-shaped side portions 6b of the pin member 6 are between the corresponding inner side surfaces of the side walls 22. Regulate the position. The both side walls 22 are provided with elastic locking claws 27 for attachment that are partitioned by slits and project the upper side outward. A concave portion 22b and a guide concave portion 22c extending in the vertical direction are provided on the inner surfaces of the side walls 22 so as to face each other.

また、ハウジング2は、筒形上外周が一段張り出していると共に、下側にあって前壁20側に開口しかつ両側壁22の一部25aを欠如した状態で区画形成された応動体用の小枠部25を有している。そして、底壁23は、欠如された一部25aが段差となっていると共に、一部25aの上側が型抜き用***24aを介してハウジング内に連通されている。このため、底壁23は、その2箇所の***24aと、後両側に貫通された略L形のピン挿通穴24bと、両ピン挿通穴24bの間に小スリットを介し区画形成された弾性挟持片23a,23bと、各ピン挿通穴24bと前記小スリットの間に形成されているピン受け部などが設けられている。ピン挿通穴24bは、ピン部材6の線径よりも若干大きな穴幅からなり、略U形のピン部材6をこの穴からハウジング1内へ挿入可能にする。そして、弾性挟持片23a,23bにはピン部材6が揺動可能に枢支される。すなわち、このピン部材6は、U形中間部6aと、U形両側部6bと、各両側部6bの自由端側を内側に折り曲げた先端6cとからなる。   Further, the housing 2 has a cylindrical upper and outer periphery that protrudes one step, is open on the front wall 20 side on the lower side, and is formed for a responder that is partitioned in a state in which a part 25a of both side walls 22 is missing. A small frame portion 25 is provided. The bottom wall 23 has a stepped portion 25a that is lacking, and the upper side of the portion 25a communicates with the inside of the housing through a small hole 24a for die cutting. For this reason, the bottom wall 23 has two small holes 24a, a substantially L-shaped pin insertion hole 24b penetrating to both sides of the rear wall 23, and an elastic pinch formed by a small slit between the pin insertion holes 24b. Pieces 23a and 23b, pin receiving portions formed between the pin insertion holes 24b and the small slits are provided. The pin insertion hole 24 b has a hole width slightly larger than the wire diameter of the pin member 6, and allows the substantially U-shaped pin member 6 to be inserted into the housing 1 from this hole. And the pin member 6 is pivotally supported by the elastic clamping pieces 23a and 23b so that rocking | fluctuation is possible. That is, the pin member 6 includes a U-shaped intermediate portion 6a, U-shaped side portions 6b, and a tip 6c that is bent inward at the free end sides of the both side portions 6b.

前記した小枠部25の両側には軸穴25bが設けられている。小枠部25の内側は、前から奥側がハウジング内に連通しており、底面に設けられて付勢部材46を位置決めするばね受け用凹所と、枠内の上面を区画しかつハウジング内に支持軸26aを突設している壁26とを有している。また、欠如された一部25aの上側は、図3のごとくハウジング2内に穴24aを介して連通されていると共に、穴24aを区画している側面にテーパー面47が設けられている。テーパー面47は、本発明の要部であり、下向きに傾斜した傾斜部として形成されている。すなわち、このテーパー面47は、ハウジング内の略前後中間より少し前側から前壁20側に向かって下向き傾斜となっていて、ラッチ部材3を構成している係合爪37が摺動体30と共に下移動するとき、係合爪37のピン38cをテーパー面47に当接することで軸部37aを支点として前側から後側へ機械的に回転ないしは傾倒可能にする。   Shaft holes 25b are provided on both sides of the small frame portion 25 described above. The inner side of the small frame portion 25 communicates from the front to the inside of the housing, and is provided on the bottom surface to define a spring receiving recess for positioning the urging member 46, and an upper surface in the frame, and in the housing. And a wall 26 projecting from a support shaft 26a. Further, the upper side of the missing part 25a is communicated with the housing 2 through the hole 24a as shown in FIG. 3, and a tapered surface 47 is provided on the side surface defining the hole 24a. The tapered surface 47 is a main part of the present invention, and is formed as an inclined portion inclined downward. That is, the tapered surface 47 is inclined downward slightly from the front side to the front wall 20 side from the substantially front-rear middle in the housing, and the engaging claw 37 constituting the latch member 3 is lowered together with the sliding body 30. When moving, the pin 38c of the engaging claw 37 is brought into contact with the tapered surface 47 so that it can be mechanically rotated or tilted from the front side to the rear side with the shaft portion 37a as a fulcrum.

また、小枠部25には、応動体4が揺動可能に配置されると共に、該応動体4の下側凹所と前記ばね受け用凹所との間に付勢部材46が配置される。なお、応動体4は、小ブロック状であり、小枠部25の内側上面に当接する突き当て部41と、摺動体30の対応下面に当接する突出受け部42と、軸穴25bに嵌合する両側の軸部43と、下面側のばね受け用凹所などを一体に有している。   In the small frame portion 25, the responding body 4 is disposed so as to be swingable, and a biasing member 46 is disposed between the lower recess of the responding body 4 and the spring receiving recess. . The responding body 4 has a small block shape, and is fitted into the abutting portion 41 that abuts the inner upper surface of the small frame portion 25, the protruding receiving portion 42 that abuts the corresponding lower surface of the sliding body 30, and the shaft hole 25b. The shaft portions 43 on both sides and the spring receiving recesses on the lower surface side are integrally provided.

ラッチ部材3は摺動体30及び係合爪37から構成されている。摺動体30は、本体31の背面側に突当部32を有している。すなわち、本体31は、上辺33a及び両側辺33bで概略コ形枠状に形成され、又、上辺33aと両側辺33bで開口33を区画形成している。下側には、各側辺33bに貫通され軸穴33dが設けられていると共に、各側辺33の間に筒部34が付設されている。筒部34は、筒内が上記した支持軸26a及びばね部材45の上側を遊嵌可能な孔であり、又、上記したガイド溝20aと嵌合される突起34bを有している。突当部32は、ストライカー62が当接する水平壁部と、該水平壁部の左右中間から下へ延びている縦壁部とからなる。前記水平壁部は、両側が本体31より少し外へ突出しており、ハウジング2のガイド凹部22cに嵌合された状態で摺動される。前記縦壁部は両側にハート形のカム溝5を有している。前記両側のカム溝5は、ほぼ同形であり、前記縦壁部の略中央部に突設している凸状カム島35と、前記縦壁部の下両側に張り出している翼片部36a等により区画形成されている。溝形状は、下側から右上側へ延びる誘導溝5aと、誘導溝5aの上側に位置して左右に別れている係止用誘導溝5b及び解除用誘導溝5dと、誘導溝5b,5dの間の下側に位置した凹状係止溝5cと、誘導溝5dから下側へ延びる復帰溝5eなどからなり、又、各溝5a〜5eの溝底面が略平面となっている。   The latch member 3 includes a sliding body 30 and an engaging claw 37. The sliding body 30 has an abutting portion 32 on the back side of the main body 31. That is, the main body 31 is formed in a substantially U-shaped frame shape with the upper side 33a and both side sides 33b, and the opening 33 is defined by the upper side 33a and both side sides 33b. On the lower side, a shaft hole 33 d is provided through each side 33 b, and a cylindrical portion 34 is provided between each side 33. The cylinder portion 34 is a hole in which the inside of the cylinder can be loosely fitted on the upper side of the support shaft 26a and the spring member 45, and has a protrusion 34b fitted to the guide groove 20a. The abutting portion 32 includes a horizontal wall portion with which the striker 62 abuts and a vertical wall portion extending downward from the middle of the horizontal wall portion. Both sides of the horizontal wall portion protrude slightly outward from the main body 31 and are slid in a state of being fitted in the guide recess 22 c of the housing 2. The vertical wall portion has heart-shaped cam grooves 5 on both sides. The cam grooves 5 on both sides have substantially the same shape, and projecting cam islands 35 projecting from a substantially central part of the vertical wall part, blade pieces 36a projecting on both lower sides of the vertical wall part, etc. It is partitioned by. The groove shape includes a guide groove 5a extending from the lower side to the upper right side, a locking guide groove 5b positioned on the upper side of the guide groove 5a, and a release guide groove 5d, and a guide groove 5b, 5d. The groove includes a concave locking groove 5c positioned on the lower side, a return groove 5e extending downward from the guide groove 5d, and the bottom surfaces of the grooves 5a to 5e are substantially flat.

これに対し、係合爪37は、本体38及び爪39からなり、爪39を開口33内に位置した状態で、全体が本体31の上辺33a及び両側辺33bの間に配置される。本体38は、上部38aが爪39を突設し、下部38bが中間部を欠如している。上部38aは、本体31のコ形枠状内に配置されると、爪39が開口33に入る。下部38bは、上部38aから延びた2本の片状となっており、各下部38bの外面にあって、上下中間に設けられた軸部37aと、下端に設けられたピン38cとを有している。両下部38bの間には、前記した筒部34内に入る突片部37bが設けられている。 On the other hand, the engaging claw 37 includes a main body 38 and a claw 39, and the whole is disposed between the upper side 33 a and both side sides 33 b of the main body 31 with the claw 39 positioned in the opening 33. As for the main body 38, the upper part 38a protrudes the nail | claw 39, and the lower part 38b lacks the intermediate part. When the upper portion 38 a is disposed within the U-shaped frame shape of the main body 31, the claw 39 enters the opening 33. The lower part 38b is in the form of two pieces extending from the upper part 38a. The lower part 38b has a shaft part 37a provided in the middle between the upper and lower sides and a pin 38c provided at the lower end on the outer surface of each lower part 38b. ing. Between both the lower portions 38b, a projecting piece portion 37b that enters the above-described cylindrical portion 34 is provided.

(組立)以上の各部材は、例えば、次のような要領で組み付けられる。まず、係合爪37が摺動体30に取り付けられる。この作業では、図5の状態から軸部37aを側辺33bから軸穴33dに押し込める。すると、係合爪37は、軸部37aを支点として、所定範囲だけ回動可能に枢支され、爪39が図2(a)のごとく開口33内に収まった係止解除状態と、図2(b)のごとく開口33内から突出されてストライカー62の凸部又は爪を上から押さえる係止状態とに回動切換可能となる。また、応動体4は、小枠部25に対し付勢部材46と共に枠内からハウジング内に配置され、かつ、両側の軸部43が対応する軸穴25bに嵌合枢支した状態で上下揺動可能に組み付けられる。 (Assembly) Each member described above is assembled in the following manner, for example. First, the engaging claw 37 is attached to the sliding body 30. In this operation, the shaft portion 37a is pushed from the side 33b into the shaft hole 33d from the state shown in FIG. Then, the engaging claw 37 is pivotally supported by a predetermined range with the shaft portion 37a as a fulcrum, and the claw 39 is in the unlocked state in which the claw 39 is accommodated in the opening 33 as shown in FIG. As shown in (b), it is possible to turn and switch to the locked state in which the protrusion or claw of the striker 62 is pressed from above by protruding from the opening 33. The responding body 4 is arranged in the housing together with the urging member 46 with respect to the small frame portion 25 from the inside of the frame, and the shaft portion 43 on both sides is fitted and supported in the corresponding shaft hole 25b. It is assembled to be movable.

次に、以上の係合爪37付きの摺動体30、つまりラッチ部材3はハウジング2内に組み付けられる。この作業では、予め、ばね部材45を支持軸26aに軸装し、ピン部材6を底壁23に揺動可能に保持した状態にしてそれぞれハウジング2内に配置しておくことが好ましい。ピン部材6は、両側の先端6cを各ピン挿通穴24bからハウジング内に挿入してから、U形中間部6aを弾性挟持片23a,23b側に強制的に移動することにより、弾性挟持片23bと弾性挟持片23aとの間に挟持される。この挟持状態では、ピン部材6がハウジング2内に起立保持され、両側部6bの上側が両側内面に揺動可能に圧接され、又、U形両側部6bが規制用縦リブ29と対応内側面との間に位置規制されている。そして、ラッチ部材3は、ハウジング2内に押し入れられると、突起34bがガイド溝20aに落ち込んで嵌合されたときに、ハウジング2に対し抜け止めされて組み付けられる。なお、ラッチ部材3の押し込み過程では、ばね部材45の上側が筒部34内に入り、係合爪37の突片部37bに当接する。又、ピン部材6の両先端6cが対応するカム溝5の溝入口(復帰溝5eより下側へ延びる溝)に入る。   Next, the sliding body 30 with the above engaging claws 37, that is, the latch member 3 is assembled in the housing 2. In this operation, it is preferable that the spring member 45 is mounted on the support shaft 26a and the pin member 6 is swingably held on the bottom wall 23 and disposed in the housing 2 in advance. The pin member 6 is inserted into the housing through the pin insertion holes 24b on both sides, and then the U-shaped intermediate portion 6a is forcibly moved toward the elastic pinching pieces 23a and 23b, whereby the elastic pinching piece 23b. And the elastic clamping piece 23a. In this sandwiched state, the pin member 6 is held upright in the housing 2, the upper side of both side parts 6 b is pressed against the inner surfaces of both sides so as to be swingable, and the U-shaped side parts 6 b correspond to the regulating vertical ribs 29 and the corresponding inner side surfaces. The position is restricted between. When the latch member 3 is pushed into the housing 2, the latch member 3 is prevented from being detached from the housing 2 and assembled when the projection 34b is fitted into the guide groove 20a. In the process of pushing the latch member 3, the upper side of the spring member 45 enters the cylindrical portion 34 and comes into contact with the protruding piece portion 37 b of the engaging claw 37. Further, both ends 6c of the pin member 6 enter the corresponding groove inlets of the cam grooves 5 (grooves extending downward from the return grooves 5e).

(作動1)以上のようにして、組立られたラッチ装置1は、上から見たときに、係合爪37の爪39が目視不能な状態、つまり係止解除状態となっている。なお、使用態様としては、例えば、可動体61のストライカー62に対応して箱状基体60の適位置に弾性係止爪27等を介し取り付けられる。取付状態において、ラッチ装置1は、図2(a)のごとくラッチ部材3がばね部材45により付勢移動(この移動は突起34bがガイド溝20aの上端面に当たることで規制される)され、又、爪39が開口33内に入る方向へ回動(この回動はピン38cがリブ28の最も高くなった箇所に乗り上げることで行われる)されている。この状態は「ラッチ部材3の係止解除位置」である。そして、ラッチ部材3は、ストライカー62によりばね部材45の付勢力に抗して図2(a)の矢印方向へ押されると、係合爪37が軸部37aを支点として回動され、ストライカー62の先端を抜け止めする。又、ラッチ部材3は前記押し力を解放することにより、図2(b)の係止位置で係止される。すなわち、ピン部材6の各先端6cは、摺動体30及び係合爪37の下移動により上記した誘導溝5aから係止用誘導溝5bに入り、ラッチ部材3に対する押圧力を解放したときに、係止溝5cに係止される。この係止により、可動体61は閉位置に保持(ロック)される。 (Operation 1) As described above, the assembled latch device 1 is in a state in which the claw 39 of the engagement claw 37 is not visible when viewed from above, that is, in the unlocked state. As a usage mode, for example, it is attached to an appropriate position of the box-shaped base 60 corresponding to the striker 62 of the movable body 61 via an elastic locking claw 27 or the like. In the mounted state, as shown in FIG. 2 (a), the latch device 1 is urged and moved by the latch member 3 by the spring member 45 (this movement is restricted by the protrusion 34b hitting the upper end surface of the guide groove 20a), or The claw 39 is rotated in a direction in which the claw 39 enters the opening 33 (this rotation is performed by the pin 38c riding on the highest point of the rib 28). This state is the “lock release position of the latch member 3”. When the latch member 3 is pushed by the striker 62 against the urging force of the spring member 45 in the direction of the arrow in FIG. 2A, the engaging claw 37 is rotated about the shaft portion 37 a as a fulcrum. Secure the tip of the. The latch member 3 is locked at the locking position shown in FIG. 2B by releasing the pushing force. That is, each tip 6c of the pin member 6 enters the locking guide groove 5b from the guide groove 5a by the downward movement of the sliding body 30 and the engaging claw 37, and when the pressing force on the latch member 3 is released, Locked in the locking groove 5c. By this locking, the movable body 61 is held (locked) in the closed position.

以上の係止状態から図2(a)の解除状態に再び切り換えるときは、図4(b)のごとくラッチ部材3をストライカー62を介し再び押し、該押し力を解放する(押した手を離す)。すると、各先端6cは、上記した係止溝5cから解除用誘導溝5d、復帰溝5eを経て再び誘導溝5aから溝入口に戻り、同時に、ラッチ部材3(摺動体30と係合爪37)が当初の解除位置に切り換えられる。なお、ラッチ装置1では、図4(a)に示したように、使用状態において、上下方向などの振動荷重を受けると、ラッチ部材3があたかも図4(b)のように下向きに押圧された状態となり、誤作動により係止解除される虞がある。この構造では、そのような誤作動を次のような作動により防ぐことができる。すなわち、この構造では、振動荷重を受けると、応動体4が付勢部材46の付勢力に抗して軸部43を支点として一方向(この例では反時計回り)へ回動され、該回動に伴って突出受け部42の位置を変更し、該突出受け部42に摺動体30の側辺33b下端面を受け止めることで、摺動体30の下移動が阻止される。この結果、ピン6の先端6cが係止溝5cから解除用誘導溝5dに摺動して、係止溝5cから不用意に係止解除されないようにする。   When switching again from the above-mentioned locked state to the released state of FIG. 2A, the latch member 3 is pushed again through the striker 62 as shown in FIG. 4B, and the pushing force is released (the pressed hand is released). ). Then, each tip 6c returns from the guide groove 5a through the release groove 5d and the return groove 5e to the groove inlet, and at the same time, the latch member 3 (the sliding body 30 and the engaging claw 37). Is switched to the initial release position. In the latch device 1, as shown in FIG. 4 (a), when receiving a vibration load in the vertical direction, the latch member 3 is pressed downward as shown in FIG. 4 (b). There is a risk that the lock will be released due to malfunction. In this structure, such a malfunction can be prevented by the following operation. That is, in this structure, when receiving a vibration load, the responder 4 is rotated in one direction (in this example, counterclockwise) with the shaft portion 43 as a fulcrum against the urging force of the urging member 46. By changing the position of the protrusion receiving portion 42 with the movement and receiving the lower end surface of the side 33b of the sliding body 30 on the protrusion receiving portion 42, the downward movement of the sliding body 30 is prevented. As a result, the tip 6c of the pin 6 slides from the locking groove 5c to the release guiding groove 5d so that the locking is not inadvertently released from the locking groove 5c.

(作動2)ところで、従来のラッチ装置では、寒冷地等の過酷な環境下で用いられると、課題に挙げたように係合爪37が枢支部(軸部37aと軸穴33dとの嵌合)を支点として回転し難くなって正常な係止作動、つまり係止解除状態から係止状態に切り換えられなくなる虞があった。しかし、この構造では、ラッチ部材3がストライカー62により図2(a)の矢印方向へ押されると、摺動体30の下移動に伴って、係合爪37がテーパー面47から受ける反力で軸部37aを支点として係止位置方向へ機械的に回転される。換言すると、係合爪37は、図3に模式化したごとく、下移動によってピン38cがハウジング2側の下向きに傾斜したテーパー面47に当接し、該テーパー面47のガイド作用(テーパー面47から受ける反力)により略起立した状態から、軸部37aを支点として斜めに回転されて係止位置に強制的に切り換えられる。従って、この構造では、用途が過酷な環境下という仕様であっても誤作動や作動不良を生じないため、用途拡大と信頼性を向上できる。 (Operation 2) By the way, in the conventional latch device, when used in a harsh environment such as a cold region, the engaging claw 37 is pivotally supported (the fitting between the shaft portion 37a and the shaft hole 33d as described in the problem). ) As a fulcrum, and there is a possibility that the normal locking operation, that is, the locked state cannot be switched from the unlocked state. However, in this structure, when the latch member 3 is pushed by the striker 62 in the direction of the arrow in FIG. 2A, the reaction force received by the engagement claw 37 from the tapered surface 47 with the downward movement of the sliding body 30 causes the shaft to rotate. It is mechanically rotated toward the locking position with the portion 37a as a fulcrum. In other words, as schematically shown in FIG. 3, the engaging claw 37 is brought into contact with the tapered surface 47 inclined downward on the housing 2 side by the downward movement, and the guide action of the tapered surface 47 (from the tapered surface 47). From the substantially upright state by the reaction force received, the shaft portion 37a is rotated obliquely with the shaft portion 37a as a fulcrum and is forcibly switched to the locking position. Therefore, with this structure, malfunctions and malfunctions do not occur even when the application is in a harsh environment, so that application expansion and reliability can be improved.

なお、以上の実施例は本発明を何ら制約するものではない。本発明のラッチ装置は請求項で特定される要件を備えておればよく、各細部は必要に応じて種々変更可能なものである。 The above actual施例are not intended to limit the invention. Latch device of the present invention it is sufficient provided the requirements specified in the claims, the details are capable variously modified as necessary.

発明の第1実施例のラッチ装置を係止状態で示す構成図である。It is a block diagram which shows the latch apparatus of 1st Example of invention in a latching state. 上記ラッチ装置を係止解除及び係止状態で示す作動図である。It is an operation | movement figure which shows the said latch apparatus in a latch release and a latching state. 上記ラッチ装置の要部作動を模式的に示す説明用参考図である。It is a reference diagram for explanation schematically showing the main part operation of the latch device. 上記ラッチ装置をGセンサの作動時と係止解除用操作時の状態で示す作動図である。It is an operation | movement figure which shows the said latch apparatus in the state at the time of the operation | movement of G sensor, and the operation for latch release. 上記ラッチ装置の部材同士の関係を示す概略分解構成図である。It is a general | schematic exploded block diagram which shows the relationship between the members of the said latch apparatus. 従来のラッチ装置例を係止解除位置及び係止位置で示す作動図である。It is an action | operation figure which shows the example of the conventional latch apparatus in the latch release position and the latching position.

1…ラッチ装置(プッシュ・プッシュ係止機構)
2…ハウジング(20,21は前後壁、22は両側壁、23は底壁)
3…ラッチ部材
4…応動体
5…カム溝
6…ピン部材
28…リブ
30…摺動体(33は開口、33dは軸穴)
37…係合爪(37aは軸部、38cはピン、38dはピン部分、39は爪)
45…ばね部材
46…付勢部材
47…テーパー面
60…箱状基体
61…可動体(62はストライカー)
1 ... Latch device (push / push locking mechanism)
2 ... Housing (20 and 21 are front and rear walls, 22 are both side walls, 23 is a bottom wall)
DESCRIPTION OF SYMBOLS 3 ... Latch member 4 ... Responsive body 5 ... Cam groove 6 ... Pin member 28 ... Rib 30 ... Sliding body (33 is an opening, 33d is a shaft hole)
37 ... engaging claw (37a is a shaft, 38c is a pin, 38d is a pin portion, 39 is a claw)
45 ... Spring member 46 ... Biasing member 47 ... Tapered surface 60 ... Box-shaped substrate 61 ... Movable body (62 is a striker)

Claims (1)

ストライカーを一端開口より挿入可能なハウジングと、
前記ストライカーと当接する突当部及び両側のカム溝を有し、前記ハウジング内に配置されてばね部材の付勢力に抗して移動される摺動体と、
先端側の爪及び基端両側のピンを有し、前記摺動体に回転可能に枢支されて前記爪が該摺動体内から突出して前記ストライカーを係止する係止位置と該摺動体内にほぼ退避した係止解除位置とに切り換えられる係合爪と、
前記カム溝に沿ってトレースするピン部材とを備え、
前記摺動体が前記ストライカーを介し押圧されて前記ばね部材の付勢力に抗し移動されると、前記カム溝及びピン部材を介しその移動後の位置に保たれ、かつ前記係合爪が係止解除位置から係止位置に切り換えられるプッシュ・プッシュ係止機構からなるラッチ装置において、
前記ハウジングは、前記係合爪の基端両側の前記ピンに当接して前記係合爪を係止位置から係止解除位置に切り換えるリブと共に、前記係合爪が回転し難くなって前記摺動体と共に前記ばね部材の付勢力に抗し移動されても係止解除状態から係止状態に切り換えられないときに、前記ピンと当接して前記係合爪を係止解除位置から係止位置に切り換えるテーパー面を有していることを特徴とするラッチ装置。
A housing into which the striker can be inserted from one end opening;
A sliding body that has an abutting portion that comes into contact with the striker and cam grooves on both sides , is disposed in the housing and is moved against the urging force of a spring member;
There is a claw on the distal end side and pins on both sides of the proximal end, and is pivotally supported by the sliding body so that the claw protrudes from the sliding body and locks the striker. An engaging claw that is switched to a substantially retracted unlocking position;
A pin member that traces along the cam groove,
When the sliding body is pressed through the striker and moved against the urging force of the spring member, the sliding body is held at the position after the movement through the cam groove and the pin member, and the engaging claw is locked. In a latch device comprising a push-push locking mechanism that can be switched from a release position to a locking position,
The housing has ribs that contact the pins on both sides of the base end of the engagement claw and switch the engagement claw from a locking position to a locking release position, and the engagement claw is difficult to rotate and the sliding body And a taper that contacts the pin and switches the engaging claw from the unlocking position to the locking position when it is not switched from the unlocked state to the locked state even when moved against the biasing force of the spring member. A latch device having a surface.
JP2004201050A 2004-07-07 2004-07-07 Latch device Active JP4430469B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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JP4430469B2 true JP4430469B2 (en) 2010-03-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103797203A (en) * 2011-07-13 2014-05-14 株式会社利富高 Latch device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008261131A (en) * 2007-04-11 2008-10-30 Inoue Kanamono Kk Push latch device
SI22759A (en) * 2008-04-28 2009-10-31 Itw Metalflex, D.O.O. Tolmin Mechanism for blocking doors of an electric household appliance
EP2343426B1 (en) * 2008-10-29 2017-06-07 Nifco INC. Latch device
JP6232336B2 (en) * 2014-04-24 2017-11-15 株式会社ニフコ Latch device
CN112610075A (en) * 2020-12-24 2021-04-06 研祥智能科技股份有限公司 Push type self-locking mechanism and locking device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103797203A (en) * 2011-07-13 2014-05-14 株式会社利富高 Latch device
CN103797203B (en) * 2011-07-13 2016-04-06 株式会社利富高 Locking devicen

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