JP2009221728A - Latch mechanism - Google Patents

Latch mechanism Download PDF

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Publication number
JP2009221728A
JP2009221728A JP2008066824A JP2008066824A JP2009221728A JP 2009221728 A JP2009221728 A JP 2009221728A JP 2008066824 A JP2008066824 A JP 2008066824A JP 2008066824 A JP2008066824 A JP 2008066824A JP 2009221728 A JP2009221728 A JP 2009221728A
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Japan
Prior art keywords
striker
latch
locking member
latch mechanism
cam
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JP2008066824A
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Japanese (ja)
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JP5084035B2 (en
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Kazuyuki Tomioka
和幸 冨岡
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Nifco Inc
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Nifco Inc
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Priority to JP2008066824A priority Critical patent/JP5084035B2/en
Priority to KR1020090021167A priority patent/KR101001047B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R7/00—Stowing or holding appliances inside vehicle primarily intended for personal property smaller than suit-cases, e.g. travelling articles, or maps
    • B60R7/04—Stowing or holding appliances inside vehicle primarily intended for personal property smaller than suit-cases, e.g. travelling articles, or maps in driver or passenger space, e.g. using racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/14—Non-removable lids or covers
    • B65D43/22—Devices for holding in closed position, e.g. clips
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D7/00—Hinges or pivots of special construction
    • E05D7/10—Hinges or pivots of special construction to allow easy separation or connection of the parts at the hinge axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/02—Releasable fastening devices locking by rotation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drawers Of Furniture (AREA)
  • Combinations Of Kitchen Furniture (AREA)
  • Lock And Its Accessories (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the destruction, forced extraction or the like of latch mechanism itself even in the application of a high load. <P>SOLUTION: In this latch mechanism, either a fixed body 8 or a movable body 9 is provided with a latch body 1, and the other one is provided with a striker 5 which is engaged with/disengaged from the latch body 1. The latch mechanism makes the movable body 9 held on the side of the fixed body 8 by a pushing operation, and releases the held state of the movable body 9 by the next pushing operation. The latch body 1 is equipped with a locking member 2 which can slide in a direction different from that of the striker 5 and which is engaged with the striker 5 so as to inhibit the striker from moving in the direction of being pulled out, and a cam member 3 which converts an input direction from the striker 5 so as to transmit it to the locking member 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ラッチ機構のうち、特に移動体を押込み操作により固定体側に保持し、次の押込み操作により前記保持を解除するプッシュ・プッシュ式のラッチ機構（これは浮出しラッチ、又は、プッシュロック・プッシュオープン式のラッチと称されることもある）に関するものである。   Among the latch mechanisms, the present invention is a push-push type latch mechanism that holds a moving body on the fixed body side by a pushing operation and releases the holding by a next pushing operation (this is a raised latch or a push mechanism). It may also be referred to as a lock / push-open type latch).

この種のラッチ機構は、固定体に対する移動体の保持及び解除共に移動体への押込み操作で行える点で使い勝手に優れており、特許文献１や２に例示されるように収納装置などに使用されている。特許文献１では、以上のラッチ機構を備えることで、蓋体が付勢力に抗した閉方向への押込み操作によりボックスの閉位置で保持されると共に、蓋体が閉位置から更に押込み操作されると前記保持状態を解除して開方向へ切り換えられる。特許文献２では、以上のラッチ機構を使い勝手及び外観性を改良したものである。機構特徴は、蓋体には押込み桿が枢支されると共にケース本体には該押込み桿の案内手段が設けられている点、ケース本体には押込み桿の先端側に当接係合される係合凹部、及び係合ピンとを備える係合桿が枢支されている点、前記係合桿の回動に伴なう係合ピンの移動軌跡上には係合ピンとの摺動カム部を備えた係合部材が設けられている点にある。そして、蓋体のケース本体側に向けた押込み操作による押込み桿の再移動により、係合部材の係止部と係合ピンとの係止が解かれて、押込み桿の先端側と係合桿との係合が解かれる構成としたものである。   This type of latch mechanism is excellent in usability in that both holding and releasing of the moving body with respect to the fixed body can be performed by pushing into the moving body, and it is used in a storage device or the like as exemplified in Patent Documents 1 and 2. ing. In Patent Document 1, by providing the above-described latch mechanism, the lid body is held at the closed position of the box by the pushing operation in the closing direction against the urging force, and the lid body is further pushed from the closed position. The holding state is released and the opening direction is switched. In Patent Document 2, the above-described latch mechanism is used and the usability and appearance are improved. The mechanism is characterized in that a pushing rod is pivotally supported on the cover body and a guide means for the pushing rod is provided on the case body, and the case body is in contact with and engaged with the distal end side of the pushing rod. A point where an engagement rod provided with a mating recess and an engagement pin is pivotally supported, and a sliding cam portion with the engagement pin is provided on the movement locus of the engagement pin accompanying the rotation of the engagement rod. The engagement member is provided. Then, by the re-movement of the pushing rod by the pushing operation toward the case body side of the lid body, the locking portion of the engaging member and the engaging pin are unlocked, and the leading end side of the pushing rod and the engaging rod The engagement is released.

実開平５−６５６８７号公報Japanese Utility Model Publication No. 5-65687 特許第３０９８３７９号公報Japanese Patent No. 3098379

上記した従来のラッチ機構では、蓋体の抜去力が直接ラッチに作用するため、抜去方向の力が高負荷として加わると、保持状態にあるのにも関わらず無理抜きされてしまうか、ラッチ機構そのものが破壊されてしまう虞があった。つまり、一般的に使用されているラッチ機構では、保持力ないしは保持荷重がおおよそ数ｋｇと小さいため、それより大きな外力が加わると誤作動や破壊要因となり、また、操作性を向上するため保持と解除時の押しストロークを小さくしようとしても、ラッチ機構を構成しているハート形循環カムと摺動ピンとの関係で制約される。   In the conventional latch mechanism described above, the removal force of the lid body directly acts on the latch. Therefore, if a force in the removal direction is applied as a high load, the latch mechanism may be forcibly removed even though it is in the holding state, or the latch mechanism There was a risk that it would be destroyed. In other words, in the latch mechanism generally used, the holding force or holding load is as small as several kilograms, so if a larger external force is applied, it will cause malfunction or destruction, and in order to improve operability, Even if an attempt is made to reduce the pushing stroke at the time of release, it is restricted by the relationship between the heart-shaped circulation cam constituting the latch mechanism and the sliding pin.

本発明の目的は、以上のような課題を解決して、特に高負荷荷重が加わっても、ラッチ機構そのものの破壊あるいは無理抜き等が未然に防止されるようにして、特に耐久性に優れて品質及び信頼性を高めると共に用途拡大を図ることにある。   The object of the present invention is to solve the above-described problems, and in particular to prevent the latch mechanism itself from being broken or forcibly removed even when a high load load is applied. The purpose is to improve the quality and reliability and to expand applications.

上記目的を達成するために、請求項１の発明は、固定体もしくは移動体の何れか一方にラッチ本体を設けると共に、他方に該ラッチ本体に係脱されるストライカを設け、前記移動体を押込み操作により前記固定体側に保持し、次の押込み操作により前記保持を解除するラッチ機構において、前記ラッチ本体は、前記ストライカと異方向に摺動可能であると共に、該ストライカと係合して該ストライカの抜け方向への移動を阻止する係止部材と、前記ストライカからの入力方向を変換して前記係止部材に伝達するカム部材とを備えていることを特徴としている。   In order to achieve the above object, according to the first aspect of the present invention, a latch body is provided on one of the fixed body and the movable body, and a striker engaged with and disengaged from the latch body is provided on the other side, and the movable body is pushed in. In the latch mechanism that holds the fixed body side by an operation and releases the holding by the next pushing operation, the latch body is slidable in a different direction from the striker, and engages with the striker to engage the striker. And a cam member that converts an input direction from the striker and transmits it to the locking member.

以上のラッチ機構において、移動体は固定体に対して相対的に移動されるものであればよく、蓋体、扉、引戸などを含む。固定体は移動体を配置しているものであればよく、各種装置、ボックス、ハウジング、更には形態例のような引出体なども含む。この機構特徴は、プッシュ・プッシュ式ラッチ機構の耐久性、つまりストライカに対する保持力を従来機構よりも数段（例えば数十〜数百倍）高くするため、従来機構に対しストライカと係脱する係止部材、及びストライカから受ける力を入力方向を変換して係止部材に伝達するカム部材を有している。係止部材としては、ストライカと異方向に摺動されてストライカと係脱することから、ストライカと係合した状態で過大な抜去力が加わっても破壊されたり無理抜きされ難くし易い。より好ましくは、形態例のごとく係止部材をストライカと略直交方向へ配置することである。カム部材としては、ストライカがラッチ本体に対し係止部材を介して係脱されるようにする場合、ストライカの移動量をカム作用により係止部材に増幅して伝達可能にし、それによりストライカの小さな移動量で係止部材を大きく動かすことでラッチ機構の応答性ないしは操作性を良好にし易い。   In the above latch mechanism, the moving body only needs to be moved relative to the fixed body, and includes a lid, a door, a sliding door, and the like. The fixed body is only required to be provided with a moving body, and includes various devices, boxes, housings, and drawers as in the embodiments. This mechanism is characterized by the durability of the push-push type latch mechanism, that is, the holding force against the striker is several steps (for example, several tens to several hundred times) higher than that of the conventional mechanism. A stop member and a cam member that converts the force received from the striker and transmits the force to the locking member by changing the input direction. The locking member is slid in a different direction from the striker and is engaged with and disengaged from the striker. Therefore, even if an excessive extraction force is applied in a state of being engaged with the striker, it is difficult to be broken or forcibly removed. More preferably, the locking member is arranged in a direction substantially orthogonal to the striker as in the embodiment. As the cam member, when the striker is engaged with and disengaged from the latch body via the locking member, the movement amount of the striker can be amplified and transmitted to the locking member by the cam action, thereby reducing the striker's small size. It is easy to improve the responsiveness or operability of the latch mechanism by largely moving the locking member by the amount of movement.

以上の本発明は次のように具体化されることがより好ましい。
(ア)、請求項１において、前記係止部材を前記ストライカと係合する方向に付勢する付勢手段と、前記係止部材を前記ストライカと係合解除した位置に保つ保持手段とを有している構成である（請求項２）。これは、図１〜図９の形態例、図１０〜図１１の第１変形例、図１４の第３変形例に基づいて共通要部を特定したものである。
(イ)、請求項１において、前記係止部材を前記ストライカと係合解除する方向に付勢する付勢手段と、前記係止部材を前記ストライカと係合した状態に保つ保持手段とを有している構成である（請求項３）。これは、図１２〜図１３の第２変形例に基づいて請求項２に対応した要部を特定したものである。 The present invention as described above is more preferably embodied as follows.
(A) In claim 1, there is provided urging means for urging the locking member in a direction in which the locking member is engaged with the striker, and holding means for maintaining the locking member in a position disengaged from the striker. (Claim 2). This specifies the common main part based on the form example of FIGS. 1-9, the 1st modification of FIGS. 10-11, and the 3rd modification of FIG.
(A) In claim 1, there is provided a biasing means for biasing the locking member in a direction of releasing the engagement with the striker, and a holding means for keeping the locking member engaged with the striker. (Claim 3). This specifies the main part corresponding to claim 2 based on the second modification of FIGS. 12 to 13.

(ウ)、請求項２と３において、前記ラッチ本体は、前記付勢手段及び前記保持手段をケーシングに配設したラッチユニットを有し、前記係止部材が前記ラッチユニットの前記保持手段に係脱される構成である（請求項４）。これは、形態例、第１変形例と第２変形例に基づいて共通要部を特定したものである。
(エ)、請求項２から４において、前記保持手段は、循環カム及び該循環カムをトレースする摺動ピンを有している構成である（請求項５）。これは、形態例、第１変形例から第３変形例に基づいて共通点を確認的に特定したものである。 (C) In Claims 2 and 3, the latch body has a latch unit in which the urging means and the holding means are arranged in a casing, and the locking member is engaged with the holding means of the latch unit. It is the structure removed (Claim 4). This specifies a common principal part based on a form example, a 1st modification, and a 2nd modification.
(D) In Claims 2 to 4, the holding means has a circulation cam and a sliding pin that traces the circulation cam (Claim 5). In this example, the common points are identified in a positive manner based on the form examples and the first to third modifications.

(オ)、請求項２から５において、前記カム部材は、前記ストライカから力を受ける入力部及び前記係止部材に力を伝達する伝達部とを有している構成である（請求項６）。この場合、更に、前記カム部材は、短片及び長片からなる略Ｌ形状であり、前記短片及び長片の略交差部分を枢支した状態で、前記短片を前記入力部として、前記長片を前記伝達部として用いられることが好ましい（請求項７）。これらは全ての例の共通要部を特定したものである。
(カ)、請求項１から７において、前記ラッチ本体は、前記係止部材を配置しているケースと、前記ケースに設けられて前記係止部材を摺動可能で、かつ前記ストライカの出退方向への摺動を阻止する壁部を有している構成である（請求項８）。これも全ての例の共通要部を特定したものである。 (E) In Claims 2 to 5, the cam member has an input part that receives a force from the striker and a transmission part that transmits the force to the locking member (Claim 6). . In this case, further, the cam member has a substantially L shape composed of a short piece and a long piece, and the short piece is used as the input portion in a state where a substantially intersecting portion of the short piece and the long piece is pivotally supported. It is preferable to be used as the transmission unit (claim 7). These specify common parts of all examples.
(F) Claims 1 to 7, wherein the latch main body is provided with a case in which the locking member is disposed, and is provided on the case so as to be able to slide on the locking member, and the striker is moved in and out. It is the structure which has the wall part which prevents the sliding to a direction (Claim 8). This also specifies common parts of all examples.

請求項１の発明では、ラッチ機構の耐久性、つまりラッチ機構としての抜去力ないしは保持力を従来機構よりも高くするため、従来機構に対しストライカと係脱する係止部材、及びストライカから受ける力を入力方向を変換して係止部材に伝達するカム部材を有している。そして、係止部材は、ストライカと異方向に摺動されてストライカと係脱することで、ストライカを介して過大な抜去力が加わった際の破壊や無理抜きに対し改善可能にする。カム部材は、ストライカの移動量をカム作用により係止部材に増幅して伝達可能し、それによりラッチ機構としての応答性ないしは操作性を改善可能にする。   In the invention of claim 1, in order to make the durability of the latch mechanism, that is, the removal force or holding force as the latch mechanism higher than that of the conventional mechanism, the latch member that engages and disengages the striker with respect to the conventional mechanism, and the force received from the striker Has a cam member that converts the input direction and transmits it to the locking member. Then, the locking member is slid in a different direction from the striker, and is engaged with and disengaged from the striker, thereby making it possible to improve against breakage or excessive removal when an excessive extraction force is applied via the striker. The cam member can amplify and transmit the amount of movement of the striker to the locking member by a cam action, thereby making it possible to improve the responsiveness or operability of the latch mechanism.

請求項２と３の発明では、ラッチ本体の保持手段として、形態例と第１変形例又は第３変形例の構成か、第２変形例の構成か、必要に応じて選択可能にし、それにより設計自由度を拡大できる。   According to the second and third aspects of the invention, as the holding means of the latch body, the configuration of the form example and the first modification or the third modification, or the structure of the second modification can be selected as necessary, thereby Design flexibility can be expanded.

請求項４の発明では、ラッチ本体が既存のラッチユニットを使用可能なため汎用性を持たせて簡易化できる。これに対し、請求項５の発明では、保持手段が既存の循環カム及び摺動ピンを使用可能なため簡易化できる。   In the invention of claim 4, since the latch main body can use the existing latch unit, it can be simplified with general versatility. On the other hand, in the invention of claim 5, since the holding means can use the existing circulating cam and sliding pin, it can be simplified.

請求項６の発明では、ストライカからの力をカム部材を介し係止部材に増幅して伝達でき、それにより上記したラッチ機構としての応答性ないしは操作性を向上できる。この場合、請求項７の発明では、更にカム部材が短片と長片のレバー比に応じた増幅率で増大される関係で、ラッチ機構としての応答性ないしは操作性をより確実に向上できる。   According to the sixth aspect of the present invention, the force from the striker can be amplified and transmitted to the locking member via the cam member, thereby improving the responsiveness or operability as the above-described latch mechanism. In this case, according to the seventh aspect of the present invention, the responsiveness or operability as the latch mechanism can be more reliably improved because the cam member is further increased at an amplification factor corresponding to the lever ratio between the short piece and the long piece.

請求項８の発明では、係止部材が壁部により摺動方向を規制されるため、壁部の強度設定により上記したラッチ機構として保持力をより高めて耐久性に優れたものを提供できる。   In the invention according to claim 8, since the sliding direction of the locking member is restricted by the wall portion, it is possible to provide a latch mechanism with higher durability and superior durability by setting the strength of the wall portion.

以下、本発明の具体例について添付図面を参照しながら説明する。この説明では、図１〜図９に示される形態例の概要、機構特徴、作動特徴、図１０及び図１１に示される第１変形例、図１２及び図１３に示される第２変形例、図１４に示される第３変形例の順に詳述する。   Hereinafter, specific examples of the present invention will be described with reference to the accompanying drawings. In this description, the outline of the embodiment shown in FIGS. 1 to 9, the mechanism feature, the operation feature, the first modification shown in FIGS. 10 and 11, the second modification shown in FIGS. 14 in the order of the third modification shown in FIG.

（概要）図１は形態例のラッチ機構の使用例と外観例を示している。図１（ａ）において、符号７はシステムキッチンを構成しているキッチン本体、７ａはシンク等を保持する支持フレーム、７ｂはその下側に設けられている大きな空間、８は該空間７ｂに配置された引出体、８ａは該引出体８の前側に設けられた小収納部、９は該小収納部８ａの前開口を開閉する蓋体である。ここで、引出体８は、不図示のスライド機構により前後に所定距離だけ摺動可能に支持されている。小収納部８ａは、包丁等の小物類を収容する箇所であり、引出体８の前側に一体的に設けられると共に前開口している。蓋体９は、下側ヒンジ部９ａを支点として回動される前面板であり、上縁に沿って設けられた取手部９ｂを有している。 (Outline) FIG. 1 shows a usage example and an appearance example of a latch mechanism according to an embodiment. In FIG. 1 (a), reference numeral 7 is a kitchen body constituting the system kitchen, 7a is a support frame for holding a sink and the like, 7b is a large space provided below, and 8 is disposed in the space 7b. The drawn body 8a is a small storage portion provided on the front side of the drawer body 8, and 9 is a lid for opening and closing the front opening of the small storage portion 8a. Here, the drawer body 8 is supported by a slide mechanism (not shown) so as to be slidable by a predetermined distance back and forth. The small storage portion 8a is a portion for storing small items such as a knife, and is provided integrally with the front side of the drawer body 8 and is open to the front. The lid body 9 is a front plate that is rotated about the lower hinge portion 9a as a fulcrum, and has a handle portion 9b provided along the upper edge.

以上の使用例において、ラッチ機構としては、主要部を構成しているラッチ本体１が小収納部８ａの上面側に固定されると共に、ラッチ本体１に係脱されるストライカ５が蓋体９の上内面側にベース６を介して取り付けられており、蓋体９を最初の押込み操作により小収納部８ａ側、つまり小収納部８ａの前開口を塞ぐ閉位置に保持し、次の押込み操作により前記保持を解除して蓋体９を開方向へ切換可能にするものである。但し、使用態様は、ラッチ本体１を蓋体９等の移動体側に設けると共に、ストライカ５を小収納部８ａ等の固定体側に設けるようにしてもよい。また、他の用途例としては、キッチン本体７もしくは引出体８の何れか一方にラッチ本体１を設けると共に、他方に該ラッチ本体１に係脱されるストライカ５を設け、引出体８を引き出されている状態から収納位置へ押し込む押込み操作（最初の押込み操作）によりキッチン本体７側に保持し、次の押込み操作により前記保持を解除するような使い方でもよい。   In the above usage example, as the latch mechanism, the latch main body 1 constituting the main portion is fixed to the upper surface side of the small storage portion 8 a, and the striker 5 engaged with and disengaged from the latch main body 1 is the lid 9. It is attached to the upper inner surface via the base 6, and the lid body 9 is held in the closed position that closes the small storage portion 8a side, that is, the front opening of the small storage portion 8a, by the first pushing operation, and by the next pushing operation. The holding is released and the lid 9 can be switched in the opening direction. However, in the usage mode, the latch body 1 may be provided on the moving body side such as the lid body 9 and the striker 5 may be provided on the fixed body side such as the small storage portion 8a. As another application example, the latch body 1 is provided in one of the kitchen body 7 and the drawer body 8, and the striker 5 engaged with and disengaged from the latch body 1 is provided on the other side, and the drawer body 8 is pulled out. It may be used such that it is held on the kitchen body 7 side by a pushing operation (first pushing operation) to push into the storage position from the state where it is held, and the holding is released by the next pushing operation.

（機構特徴）上記したラッチ機構のうち、ラッチ本体１は、従来機構に比べ、特にケース１０内に配置された係止部材２及びカム部材３を有していると共に、それに関連する構成が相違している。以下、これらの点を明らかにする。 (Mechanism Features) Of the above-described latch mechanisms, the latch body 1 has a locking member 2 and a cam member 3 arranged in the case 10 in particular, and the configuration related thereto is different from that of the conventional mechanism. is doing. Hereinafter, these points will be clarified.

ここで、ケース１０は、図２や図３及び図６に示されるごとく、上面開口した横長矩形容器状をなし、上開口が取付兼用のカバー１５により閉じられる。ケース１０には、位置合わせ用の上フランジ部１０ａと、両側の係合孔１０ｂと、ガイド用壁部１１と、ガイドレール１２と、軸受用ボス部１３と、出入用開口１４が設けられている。このうち、上フランジ部１０ａは、ケース１０の上端面に沿って複数箇所に設けられており、カバー対応部と嵌合することでケース１０に対するカバー１５の装着精度を保つ。係合孔１０ｂは、ケース両側部にスリットを介して区画された揺動部に設けられている。壁部１１は、ケース内底面にあって略左右中間から一方側壁の手前まで延びている横壁部分１１ａ及び該横壁部分から直角に屈曲されて後壁部に接続されている縦壁部分１１ｂとからなる。横壁部分１１ａは、ストライカ５の出退方向と略直交した状態に設けられており、ケース後壁部との間に係止部材２を摺動可能に配置すると共に、ストライカ５の出退方向への摺動を阻止する壁部である。   Here, as shown in FIG. 2, FIG. 3, and FIG. 6, the case 10 has a horizontally long rectangular container shape that is open on the upper surface, and the upper opening is closed by a cover 15 that also serves as an attachment. The case 10 is provided with an upper flange portion 10a for alignment, engaging holes 10b on both sides, a guide wall portion 11, a guide rail 12, a bearing boss portion 13, and an access opening 14. Yes. Among these, the upper flange portion 10 a is provided at a plurality of locations along the upper end surface of the case 10, and the mounting accuracy of the cover 15 to the case 10 is maintained by fitting with the cover corresponding portion. Engagement hole 10b is provided in the swinging part partitioned through slits on both sides of the case. The wall portion 11 is formed from a horizontal wall portion 11a that is on the bottom surface of the case and extends from substantially the middle of the left and right sides to the front of one side wall, and a vertical wall portion 11b that is bent at a right angle from the horizontal wall portion and connected to the rear wall portion. Become. The lateral wall portion 11a is provided in a state substantially orthogonal to the strike / retreat direction of the striker 5, and the locking member 2 is slidably disposed between the case rear wall and the striker 5 in the withdrawal / retraction direction. It is a wall part which prevents sliding of.

また、横壁部分１１ａとケース後壁部には、図６（ｂ）のごとく爪部１１ｄ，１１ｄが対向した状態に設けられている。縦壁部分１１ｂには後述するラッチユニット４を装着する係合孔１１ｃが設けられている。ガイドレール１２は、横壁部分１１ａとケース後壁部との間のケース内底面に突設された断面凸状からなり、横壁部分１１ａと平行でかつ短くなっている。ボス部１３は、カム部材３を枢支する箇所で、ケース前壁部側でかつケース前壁部に設けられた矩形の出入用開口１４の片側に位置している。   Further, the claw portions 11d and 11d are provided on the lateral wall portion 11a and the case rear wall portion so as to face each other as shown in FIG. The vertical wall portion 11b is provided with an engagement hole 11c for mounting a latch unit 4 described later. The guide rail 12 has a convex cross-section projecting from the bottom surface of the case between the lateral wall portion 11a and the rear wall portion of the case, and is parallel to the lateral wall portion 11a and is short. The boss portion 13 is a portion that pivotally supports the cam member 3, and is located on the case front wall portion side and on one side of the rectangular entrance / exit opening 14 provided on the case front wall portion.

これに対し、カバー１５は、図２から推察されるごとく、ケース１０より一回り大きな矩形板状であり、ケース１０の上開口に挿入される枠部１６と、枠部１６の左右側壁に設けられた係止爪１７と、枠部１６の外両側に下設された取付用ボス部１８と、枠部１６の前側に下設されたガイド片部１９と、下面に設けられてケース側の各上フランジ部１０ａと係合する凹部１５ａ（図２（ｃ）を参照）とを有している。そして、以上のカバー１５は、ケース１０に係止部材２、カム部材３、ラッチユニット４を組み入れた状態で、枠部１６がケース内に押し込まれることにより、各係止爪１７と係合孔１０ｂとの係合、前記凹部と上フランジ部１０ａとの係合を介してケース１に精度良く装着される。   On the other hand, as inferred from FIG. 2, the cover 15 has a rectangular plate shape that is slightly larger than the case 10, and is provided on the frame portion 16 inserted into the upper opening of the case 10 and the left and right side walls of the frame portion 16. The locking claw 17, the mounting bosses 18 provided on both outer sides of the frame part 16, the guide piece part 19 provided on the front side of the frame part 16, and the case side. A recess 15a (see FIG. 2C) that engages with each upper flange portion 10a is provided. The cover 15 described above is configured such that the frame 16 is pushed into the case with the locking member 2, the cam member 3, and the latch unit 4 incorporated in the case 10, whereby each locking claw 17 and the engagement hole It is attached to the case 1 with high accuracy through the engagement with 10b and the engagement between the concave portion and the upper flange portion 10a.

係止部材２は、図３及び図７に示されるごとく矩形ブロック状の板部２０と、該板部後端に突設されている係止片部２１と、板部前片側に設けられた嵌合凹部２２と、板部前端の片側に突設された係合部２３と、板部両側面に設けられた爪部２５と、板部下面に設けられて前後方向に延びているガイド溝２６とを一体に有している。係止片部２１は、先端がラッチユニット４に係脱される膨出部２１ａとなっている。   As shown in FIGS. 3 and 7, the locking member 2 is provided on the rectangular block-shaped plate portion 20, the locking piece portion 21 protruding from the rear end of the plate portion, and the plate portion front piece side. A fitting recess 22, an engaging portion 23 provided on one side of the front end of the plate portion, a claw portion 25 provided on both sides of the plate portion, and a guide groove provided on the lower surface of the plate portion and extending in the front-rear direction. 26 in an integrated manner. The locking piece portion 21 is a bulging portion 21 a whose tip is engaged with and disengaged from the latch unit 4.

以上の係止部材２は、ケース１０内にあって横壁部分１１ａとケース後壁部との間に押し込めると、両側の爪部２５が上記した対応する爪部１１ｄを弾性的に乗り越えることで抜け止めされると共に、ガイド溝２６とガイドレール１２の嵌合を介してケース左右に摺動可能に配置される。この形態では、係止部材２が図４（ｂ）のごとく縦壁部分１１ｂに最も近づく位置から、同（ｃ）のごとく縦壁部分１１ｂから最も離れる位置まで自在に摺動される。   When the locking member 2 is in the case 10 and is pushed in between the lateral wall portion 11a and the case rear wall portion, the claw portions 25 on both sides elastically ride over the corresponding claw portions 11d described above and come off. In addition to being stopped, the guide groove 26 and the guide rail 12 are slidably disposed on the left and right sides of the case through the fitting. In this embodiment, the locking member 2 is slid freely from a position closest to the vertical wall portion 11b as shown in FIG. 4B to a position farthest from the vertical wall portion 11b as shown in FIG. 4C.

カム部材３は、概略Ｌ形状からなり、Ｌ形の長片３０及び短片３１の交差部分にあって上下に突設された軸部３２，３２と、下側軸部３２及び短片３１に連設されている入力部３３と、長片３０の下面先端側に突設された軸状の伝達部３４とを有している。入力部３３は後述するストライカ５の基部５１の前端対応部と当接する箇所である。伝達部３４は、係止部材２の嵌合凹部２２に差し込まれて、カム部材３のカム作用つまり、長片３０と短片３１のレバー比に応じた増幅率で係止部材２を摺動可能にする。   The cam member 3 has an approximately L shape, and is provided at the intersection of the L-shaped long piece 30 and the short piece 31 so as to project upward and downward, and to the lower shaft part 32 and the short piece 31. The input portion 33 and the shaft-shaped transmission portion 34 projecting from the lower end side of the long piece 30 are provided. The input portion 33 is a portion that comes into contact with a front end corresponding portion of the base portion 51 of the striker 5 described later. The transmission portion 34 is inserted into the fitting recess 22 of the locking member 2, and can slide the locking member 2 with an amplification factor corresponding to the cam action of the cam member 3, that is, the lever ratio of the long piece 30 and the short piece 31. To.

以上のカム部材３は、伝達部３４を嵌合凹部２２に挿入すると共に下側軸部３２をボス部１３に嵌合した状態で、カバー１５がケース１０に装着されることで回動可能に保持される。なお、カバー１５は、ボス部１３に対応する不図示のボス部を有し、ケース１０に装着された状態で、前記上側軸部３２がそのボス部と嵌合するようになっている。   The cam member 3 described above can be rotated when the cover 15 is attached to the case 10 with the transmission portion 34 inserted into the fitting recess 22 and the lower shaft portion 32 fitted into the boss portion 13. Retained. The cover 15 has a boss portion (not shown) corresponding to the boss portion 13, and the upper shaft portion 32 is fitted to the boss portion when the cover 15 is attached to the case 10.

ラッチユニット４は、図５では一部省略しているが、特許第３１２６９９２号公報に開示のものと実質的に同じく、ケーシング４０と、保持手段であるラッチボディ４１と、付勢手段であるコイルばね４４と、概略コ形状のトレース用摺動ピン４５とを備えている。ケーシング４０は、対向側壁に設けられた弾性爪４０ａ，４０ａと、内底面に設けられてコイルばね４４を支持する軸部４０ｂと、不図示のピン用取付部を有している。ラッチボディ４１は、両側（紙面前後）に設けられたハート形島４３ａ及び該島４３ａの周囲に設けられた循環カム４３と、先端の左右側に設けられて係止片部側膨出部２１ａを係脱する一対の弾性係止爪４２，４２と、後端面から先端側に向かって設けられたガイド穴とを有している。そして、ラッチボディ４１は、前記ガイド穴に軸部４０ｂ及びコイルばね４４の対応部を差し込んだ状態でケーシング４０に組み込まれ、通常はコイルばね４４の付勢力により突出方向へ付勢移動されている。摺動ピン４５は、コ形の中間部がケース内底面に支持され、コ形の両端を内側に折り曲げた先端が対応する循環カム４３の対応部に突出している。   The latch unit 4 is partially omitted in FIG. 5, but is substantially the same as that disclosed in Japanese Patent No. 3126992, a casing 40, a latch body 41 as a holding means, and a coil as a biasing means. A spring 44 and a substantially sliding pin 45 for tracing are provided. The casing 40 includes elastic claws 40a, 40a provided on the opposite side walls, a shaft portion 40b provided on the inner bottom surface for supporting the coil spring 44, and a pin mounting portion (not shown). The latch body 41 includes a heart-shaped island 43a provided on both sides (front and back of the drawing), a circulation cam 43 provided around the island 43a, and a locking piece-side bulging portion 21a provided on the left and right sides of the tip. And a pair of elastic locking claws 42, 42 for engaging and disengaging, and a guide hole provided from the rear end surface toward the front end side. The latch body 41 is incorporated in the casing 40 with the shaft portion 40b and the corresponding portion of the coil spring 44 inserted into the guide hole, and is normally urged and moved in the protruding direction by the urging force of the coil spring 44. . The sliding pin 45 has a U-shaped intermediate portion supported on the inner bottom surface of the case, and has a U-shaped bent end inwardly protruding at a corresponding portion of the corresponding circulation cam 43.

以上のラッチユニット４は、上記した縦壁部分側係合孔１１ｃに対しケーシング４を後端から挿入し、かつ両側の弾性爪４０ａを介して抜け止めされた状態で固定されている。そして、ラッチボディ４１は、図５（ａ）のごとく接近する係止部材２の係止片部（の膨出部２１ａ）により押されると、コイルばね４４の付勢力に抗し、かつ、両弾性爪４２を弾性変位しつつケーシング４内に押し込まれる。最終的には、両弾性爪４２が係止片部の膨出部２１ａを係合抜け止めし、摺動ピン４５の両先端が循環カム４３を構成している係止溝に係止される。該係止は、ラッチボディ４１が再び図５（ａ）の矢印方向に押されると、摺動ピン４５の両先端が同図の矢印方向、つまり循環カム４３を構成している係止溝から解除用誘導溝、更に復帰溝に入って係止解除される。すると、ラッチボディ４１は、図５（ｂ）のごとくコイルばね４４の付勢力でケーシング４０から突出する方向へ摺動され、その摺動により係止部材２が図５（ｂ）の矢印方向へ摺動されることになる。なお、循環カム４３は、従来と同じため細部を省略したが、図５（ａ）において、左下側から左上側へ延びる住路溝と、該住路溝の上側に位置して左右に別れている係止用誘導溝及び解除用誘導溝と、これら両誘導溝の間に設けられた係止溝と、解除用誘導溝から下側へ延びる復路溝とを有している。   The above latch unit 4 is fixed in a state in which the casing 4 is inserted from the rear end into the above-described vertical wall portion side engagement hole 11c and is prevented from being detached through the elastic claws 40a on both sides. When the latch body 41 is pushed by the locking piece portion (the bulging portion 21a) of the locking member 2 that approaches as shown in FIG. 5A, the latch body 41 resists the urging force of the coil spring 44, and both The elastic claw 42 is pushed into the casing 4 while being elastically displaced. Eventually, both elastic claws 42 engage and prevent the bulging portion 21 a of the locking piece from engaging, and both ends of the sliding pin 45 are locked in the locking grooves constituting the circulation cam 43. . When the latch body 41 is pushed again in the direction of the arrow in FIG. 5A, both ends of the sliding pin 45 come from the direction of the arrow in FIG. The lock is released by entering the release guide groove and the return groove. Then, the latch body 41 is slid in the direction protruding from the casing 40 by the urging force of the coil spring 44 as shown in FIG. 5B, and the locking member 2 is moved in the direction of the arrow in FIG. Will be slid. The circulation cam 43 is omitted because it is the same as the conventional one. However, in FIG. 5A, the dwelling groove extending from the lower left side to the upper left side and the upper side of the dwelling groove are separated to the left and right. And a release guide groove, a lock groove provided between the guide grooves, and a return groove extending downward from the release guide groove.

これに対し、ストライカ５は、細長い矩形状の固定部５０と、固定部５０の中央部に突設された板状の基部５１と、基部５１の前端片側より前方へ突出したアーム部５２と、アーム部５２の前端左側へ突出した係止爪部５３とを一体に有している。基部５１の上下面には爪部５１が設けられている。アーム部５２の上下面には、中央長手方向に沿って、かつ先端が拡開した凹溝５４が形成されている。   On the other hand, the striker 5 includes an elongated rectangular fixed portion 50, a plate-like base portion 51 projecting from the center portion of the fixed portion 50, an arm portion 52 protruding forward from one front end side of the base portion 51, and The arm portion 52 integrally has a locking claw portion 53 protruding to the left side of the front end. Claw portions 51 are provided on the upper and lower surfaces of the base portion 51. On the upper and lower surfaces of the arm portion 52, a concave groove 54 is formed along the longitudinal direction of the center and the tip is expanded.

以上のストライカ５は、図１から推察されるごとく固定部５０が上記した蓋体９の内壁にベース６を介して固定される。ベース６には、両側の取付孔６ａと、中央に設けられて基部５１及びアーム部５２を余裕を持って挿通する不図示の貫通孔と、後面ないしは取付面側にあって固定部５０を所定距離だけ摺動可能に嵌合する凹部６ｂとが設けられている。また、この形態では、上記した凹溝５２の先端が拡開しており、また、固定部５０がベース６に対して上記した貫通孔及び凹部６ｂを介して若干量だけ移動可能に取付けられている。これらは、ストライカ５が左右の取付位置に誤差があっても該誤差を吸収して、開口１４からケース１内に入ったり出る過程で、凹溝５４が上記ガイド片部１９と嵌合した状態で精度よく挿通されるようにする。   In the striker 5 described above, the fixing portion 50 is fixed to the inner wall of the lid body 9 via the base 6 as inferred from FIG. The base 6 has mounting holes 6a on both sides, a through hole (not shown) that is provided in the center and passes through the base 51 and the arm 52 with a margin, and a fixed portion 50 on the rear or mounting surface side. A recess 6b that is slidably fitted by a distance is provided. Further, in this embodiment, the tip of the above-described concave groove 52 is widened, and the fixing portion 50 is attached to the base 6 so as to be slightly movable via the above-described through hole and concave portion 6b. Yes. Even when the striker 5 has an error in the left and right mounting positions, the error is absorbed, and the groove 54 is engaged with the guide piece 19 in the process of entering and exiting the case 1 from the opening 14. So that it can be inserted accurately.

（作動特徴）上記ラッチ機構の作動特徴を図４及び図５を参照しながら明らかにする。
（ア）図４（ａ）は、ラッチユニット４が係止部材２を係止し、それにより係止部材２をストライカ５と係合解除した解除位置に保持している。具体的には、図１（ａ）の例だと、蓋体９が開から閉方向へ回動操作されたり、逆に、ストライカ５がラッチ本体１から係合解除された後、蓋体９を閉から開方向へ回動する直前の状態に対応している。この状態において、ラッチユニット４は、図５（ａ）のごとくラッチボディ４１がコイルばね４４の付勢力に抗しケーシング４０内に押し込まれることで係止爪４２同士の間に膨出部２１ａを係合抜け止めし、その状態を循環カム４３の係止溝に摺動ピン４５を係止することで保持している。 (Operational Characteristics) The operational characteristics of the latch mechanism will be clarified with reference to FIGS.
(A) In FIG. 4A, the latch unit 4 locks the locking member 2, thereby holding the locking member 2 in the released position where the engagement with the striker 5 is released. Specifically, in the example of FIG. 1A, after the lid body 9 is rotated from the open direction to the closed direction, or the striker 5 is disengaged from the latch body 1, the lid body 9 This corresponds to the state immediately before turning from the closed to the open direction. In this state, the latch unit 4 has the bulging portion 21a between the locking claws 42 by the latch body 41 being pushed into the casing 40 against the urging force of the coil spring 44 as shown in FIG. The engagement is prevented and the state is held by locking the sliding pin 45 in the locking groove of the circulation cam 43.

（イ）図４（ｂ）は、ストライカ５が蓋体９の更なる閉方向への回動操作によりケース１内へ最大まで押し入れられた状態である。この状態では、ストライカ５がカム部材側短片３１と一体化されている不図示の入力部３３を基部５１の前端対応部で押し、その結果、カム部材３が軸部３２を支点として逆時計回りに回動され、その回動と同期して、長片３０と一体化されている不図示の伝達部３４が嵌合凹部２２の内壁を押し、その押し力で係止部材２がラッチユニット４側へ摺動される。 (B) FIG. 4B shows a state in which the striker 5 is pushed into the case 1 to the maximum by further rotating the lid body 9 in the closing direction. In this state, the striker 5 is pushed by the front end corresponding portion of the base 51 with the input portion 33 (not shown) integrated with the cam member side short piece 31, and as a result, the cam member 3 rotates counterclockwise with the shaft portion 32 as a fulcrum Synchronously with the rotation, a transmission part 34 (not shown) integrated with the long piece 30 presses the inner wall of the fitting recess 22, and the locking member 2 is latched by the latch unit 4 by the pressing force. To the side.

（ウ）すると、ラッチユニット４としては、上記した図５（ａ）のごとく摺動ピン４５が循環カム４３の係止溝に係止して係止部材２を拘束している状態から、ラッチボディ４１が係止部材２により同図の矢印方向へ押される結果、摺動ピン４５が循環カム４３の係止溝から係止解除されて同図の矢印方向、つまり解除用誘導溝から復路溝へトレースする。すると、図５（ｂ）のごとくラッチボディ４１は、コイルばね４４の付勢力で突出方向へ摺動される。同期して、係止部材２は、そのラッチボディ４１を介して同図の矢印方向、つまり図４（ｃ）のごとくストライカ５側へ摺動され、それにより係合部２３がストライカの係止爪部５３と係合する。この係合により、蓋体９は、引出体側小収納部８ａの前開口を塞ぐ閉位置に保持される。なお、カム部材３は、係止部材２が図４（ｃ）の状態まで摺動される過程で、不図示の伝達部３４が嵌合凹部２２の内壁で押される結果、軸部３２を支点として時計回りに回動されて、短片３１と一体化されている不図示の入力部３３を基部５１の前端対応部に軽く接している。 (C) Then, as the latch unit 4, the latch pin 45 is latched from the state in which the sliding pin 45 is locked in the locking groove of the circulation cam 43 and restrains the locking member 2 as shown in FIG. As a result of the body 41 being pushed by the locking member 2 in the direction of the arrow in the figure, the sliding pin 45 is unlocked from the locking groove of the circulation cam 43, and in the direction of the arrow in FIG. Trace to Then, as shown in FIG. 5B, the latch body 41 is slid in the protruding direction by the urging force of the coil spring 44. Synchronously, the locking member 2 is slid to the striker 5 side through the latch body 41 in the direction of the arrow in FIG. 4, that is, as shown in FIG. 4C, whereby the engaging portion 23 is locked to the striker. Engages with the claw portion 53. By this engagement, the lid body 9 is held at a closed position that closes the front opening of the drawer-side small storage portion 8a. In addition, the cam member 3 is a process in which the locking member 2 is slid to the state of FIG. 4C, and the transmission portion 34 (not shown) is pushed by the inner wall of the fitting recess 22. The input portion 33 (not shown) integrated with the short piece 31 is lightly in contact with the front end corresponding portion of the base portion 51.

（エ）蓋体９を閉位置から開に切り換える場合は、蓋体９を再び押込み操作する。すると、ストライカ５は、蓋体９の更なる閉方向への回動操作により上記した図４（ｂ）のごとくケース１内へ最大まで押し入れられ、カム部材側短片３１と一体化されている不図示の入力部３３をストライカ側基部５１の前端対応部で押し、その結果、カム部材３が軸部３２を支点として逆時計回りに回動される。この回動により、係止部材２は、長片３０と一体化されている不図示の伝達部３４が嵌合凹部２２の内壁を押し、その押し力でラッチユニット４側へ摺動され、係止爪部５３に対する係合部２３の係合を解除して、ストライカ５の引き抜きを許容する。同時に、ラッチユニット４は、上記した図５（ａ）のごとくラッチボディ４１が係止部材２の押圧力によりコイルばね４４の付勢力に抗しケーシング４０内に押し込まれることで係止爪４２同士の間に膨出部２１ａを係合抜け止めし、その状態を循環カム４３の係止溝に摺動ピン４５を係止することで保持することになる。 (D) When switching the lid body 9 from the closed position to the open position, the lid body 9 is pushed again. Then, the striker 5 is pushed into the case 1 to the maximum as shown in FIG. 4B by the further turning operation of the lid body 9 in the closing direction, and the striker 5 is not integrated with the cam member side short piece 31. The illustrated input portion 33 is pushed by the front end corresponding portion of the striker-side base 51, and as a result, the cam member 3 is rotated counterclockwise with the shaft portion 32 as a fulcrum. By this rotation, the locking member 2 is slid to the latch unit 4 side by a transmission force 34 (not shown) integrated with the long piece 30 against the inner wall of the fitting recess 22 by the pressing force. The engagement portion 23 is disengaged from the pawl portion 53 to allow the striker 5 to be pulled out. At the same time, as shown in FIG. 5A, the latch unit 4 is pushed into the casing 40 against the urging force of the coil spring 44 by the pressing force of the locking member 2, so that the locking claws 42 are connected to each other. During this time, the bulging portion 21 a is prevented from being disengaged, and this state is held by locking the sliding pin 45 in the locking groove of the circulation cam 43.

（オ）以上のラッチ機構は従来機構に比べて次のような点で特に優れている。
第１に、従来ラッチ機構（上記形態のラッチユニット４に対応している）では、ストライカがラッチユニットに直接作用する関係で蓋体等の移動体に対する保持力を増大しようとしても循環カムと摺動ピンの関係から制約される。これに対し、以上のラッチ機構では、ストライカ５がラッチユニット４に対し直接作用することなくカム部材３及び係止部材２を介して作用すること、ストライカ５がラッチユニット４ではなく係止部材２に対して係合したり係合解除すること、係止部材２に対しストライカ５から加わる負荷加重はガイド用壁部１１のうち横壁部分１１ａで専ら受け止められる。従って、蓋体等の移動体に対する抜去力や保持力は、係止部材２及び横壁部分１１ａの強度や剛性を確保するだけでよいことから、例えば、従来と同じラッチユニットを使用しても壁部１１、係止部材２、カム部材３を補強するだけで保持荷重を従来の数百倍にも増大できる。 (E) The above latch mechanism is particularly superior to the conventional mechanism in the following points.
First, in the conventional latch mechanism (corresponding to the latch unit 4 of the above-described form), even if the striker directly acts on the latch unit and tries to increase the holding force against the moving body such as the lid, the sliding cam and the sliding cam are slid. Constrained by the relationship of moving pins. On the other hand, in the above latch mechanism, the striker 5 acts via the cam member 3 and the locking member 2 without directly acting on the latch unit 4, and the striker 5 is not the latch unit 4 but the locking member 2. The load applied to the locking member 2 from the striker 5 is exclusively received by the lateral wall portion 11 a of the guide wall portion 11. Accordingly, the removal force and holding force with respect to the moving body such as the lid need only ensure the strength and rigidity of the locking member 2 and the lateral wall portion 11a. The holding load can be increased several hundred times by simply reinforcing the portion 11, the locking member 2, and the cam member 3.

第２に、従来ラッチ機構では、ストライカがラッチユニットに直接作用する関係で蓋体等の移動体を固定体側に保持したり保持解除するための押しストロークが循環カムと摺動ピンの関係から制約されてストロークの短縮化が難しい。この問題は、例えば、移動体が固定体側開口を開閉する場合だと、閉位置において、移動体が更に解除用の押しストローク分だけ閉方向へ移動可能に配置しなければならず用途的な制約要因となる。これに対し、以上のラッチ機構では、ストライカ５がラッチユニット４に対しカム部材３及び係止部材２を介して、つまりストライカ５の移動量をカム部材３により増幅し、かつ係止部材２を介して伝達することにより、上記した押しストロークを従来より大幅に小さくでき、その結果、上記した用途的な制約要因を解消したり、ラッチ機構としての応答性ないしは操作性を向上できる   Second, in the conventional latch mechanism, the push stroke for holding or releasing the movable body such as the lid on the fixed body side is limited by the relationship between the circulation cam and the sliding pin because the striker directly acts on the latch unit. It is difficult to shorten the stroke. For example, if the moving body opens and closes the opening on the fixed body side, the moving body must be arranged so that it can move further in the closing direction by the pushing stroke for release in the closed position. It becomes a factor. On the other hand, in the above latch mechanism, the striker 5 amplifies the movement amount of the striker 5 with respect to the latch unit 4 via the cam member 3 and the locking member 2, that is, the cam member 3. As a result, it is possible to significantly reduce the above-mentioned push stroke as compared with the conventional one, and as a result, it is possible to eliminate the above-mentioned limiting factors for use and to improve the responsiveness or operability as a latch mechanism.

（第１変形例）図１０及び図１１は、上記したストライカ５と係止部材２との係合構造を変更した一例を示している。この説明では、上記形態と同一部材及び作用的に同じ部位に同じ符号を付し、変更した箇所だけ述べて重複した記載を極力省く。 (First Modification) FIG. 10 and FIG. 11 show an example in which the engagement structure between the striker 5 and the locking member 2 is changed. In this description, the same members and the same functional parts as those in the above embodiment are denoted by the same reference numerals, and only the changed portions are described to avoid redundant descriptions as much as possible.

図１０は要部外観を示し、図１１（ａ）は図４（ａ）に対応し、図１１（ｂ）は図４（ｃ）に対応して示されている。各図において、ストライカ５のアーム部５２には、先端部５５が先細りになっていると共に、該先端部５５の下側に係止爪部５５ａが設けられている。これに対し、係止部材２の板部２０前側には、一段低くなった平板部２７が一体に設けられていると共に、該平板部２７が前記係止爪部５５ａに係合される上向き係合部２６を有している。換言すると、この変形例は、係止爪部５５ａが上記係止爪部５３に対応し、係合部２６が上記係合部２３に対応している。そして、上記（ア）〜（オ）の作動では、係止爪部５３を係止爪部５５ａに代え、係合部２３を係合部２６に代えるだけでのまま当てはまる。   FIG. 10 shows the appearance of the main part, FIG. 11 (a) corresponds to FIG. 4 (a), and FIG. 11 (b) corresponds to FIG. 4 (c). In each figure, the arm portion 52 of the striker 5 has a distal end portion 55 tapered, and a locking claw portion 55 a is provided below the distal end portion 55. On the other hand, on the front side of the plate portion 20 of the locking member 2, a flat plate portion 27 that is lowered by one step is integrally provided, and the flat plate portion 27 is engaged with the locking claw portion 55a. A joint portion 26 is provided. In other words, in this modified example, the locking claw portion 55 a corresponds to the locking claw portion 53, and the engaging portion 26 corresponds to the engaging portion 23. In the operations (a) to (e), the engaging claw portion 53 is replaced with the engaging claw portion 55a, and the engaging portion 23 is replaced with the engaging portion 26.

（第２変形例）図１２及び図１３は、係止部材２がストライカ５と係合しているときラッチユニット４に対し係止され、ストライカ５と係合解除しているときラッチユニット４に対し係止解除されるようにした一例を示している。この説明でも、上記形態と同一部材及び作用的に同じ部位に同じ符号を付し、変更点だけ述べる。 (Second Modification) FIG. 12 and FIG. 13 show that the locking member 2 is locked to the latch unit 4 when engaged with the striker 5 and is engaged with the latch unit 4 when disengaged from the striker 5. An example in which locking is released is shown. Also in this description, the same members as those in the above embodiment and the same functional parts are denoted by the same reference numerals, and only changes are described.

図１２は要部外観を示し、図１３（ａ）は図１２（ａ）に対応し、図１３（ｂ）は図１２（ｃ）に対応して示されている。各図において、ストライカ５のアーム部５２には、上記形態例とは逆向き（図に向って右側）の鈎形の係止爪部５６が突設されている。これに対し、係止部材２の板部２０前側（右側）には、ケース１０の後側内壁に沿って平行でその先端がＬ字形に屈曲した延長部２８が設けられている。延長部２８の先端側には、前記した係止爪部５６に係合する鉤形の係止爪部２８ａが形成されている。また、ケース１０の内底面には、延長部２８の屈曲先端を案内するガイド用壁部１０ｄが設けられている。   FIG. 12 shows the appearance of the main part, FIG. 13 (a) corresponds to FIG. 12 (a), and FIG. 13 (b) corresponds to FIG. 12 (c). In each figure, the arm portion 52 of the striker 5 is provided with a hook-shaped locking claw portion 56 that protrudes in the opposite direction (right side in the drawing) from the above-described embodiment. On the other hand, on the front side (right side) of the plate portion 20 of the locking member 2, an extension portion 28 is provided which is parallel to the rear inner wall of the case 10 and whose tip is bent in an L shape. A hook-shaped locking claw portion 28 a that engages with the locking claw portion 56 described above is formed on the distal end side of the extension portion 28. Further, a guide wall 10 d for guiding the bent tip of the extension 28 is provided on the inner bottom surface of the case 10.

以上の第２変形例は、上記形態例及び第１変形例に対し、係止部材２及びストライカ５の係脱関係と、係止部材２及びラッチユニット４の係脱関係が逆になっている。換言すると、上記形態例及び第１変形例では、ラッチユニット４がラッチボディ４１及びコイルばね４４を介して係止部材２をストライカ５と係合する方向に付勢すると共に、係止部材２をストライカ５と係合解除した位置に保つ構成である。これに対し、第２変形例では、ラッチユニット４がラッチボディ４１及びコイルばね４４を介して図１３（ａ）のごとく係止部材２をストライカ５と係合解除する方向に付勢すると共に、ラッチユニット４が図１３（ｂ）のごとく係止部材２をストライカ５と係合（ストライカ側係止爪部５６と係止部材側係止爪部２８ａとが係合）した位置に保つ構成である。そして、この変形例でも、上記（ア）〜（オ）の作動は係止部材２及びストライカ５の係脱関係と、係止部材２及びラッチユニット４の係脱関係を逆にすれば実質的に当てはまる。   In the second modification described above, the engagement / disengagement relationship between the locking member 2 and the striker 5 and the engagement / disengagement relationship between the locking member 2 and the latch unit 4 are reversed with respect to the above-described embodiment and the first modification. . In other words, in the embodiment and the first modification, the latch unit 4 urges the locking member 2 in the direction to engage the striker 5 via the latch body 41 and the coil spring 44, and It is the structure maintained at the position where the engagement with the striker 5 is released. On the other hand, in the second modification, the latch unit 4 urges the locking member 2 through the latch body 41 and the coil spring 44 in the direction of releasing the engagement with the striker 5 as shown in FIG. As shown in FIG. 13B, the latch unit 4 keeps the locking member 2 in a position where it engages with the striker 5 (the striker side locking claw 56 and the locking member side locking claw 28a are engaged). is there. Even in this modification, the operations (a) to (e) are substantially performed by reversing the engagement / disengagement relationship between the locking member 2 and the striker 5 and the engagement / disengagement relationship between the locking member 2 and the latch unit 4. Is true.

（第３変形例）図１４は、上記したラッチユニット４を簡素化した一例を示している。この説明でも、上記形態と同一部材及び作用的に同じ部位に同じ符号を付し、変更点だけ述べる。 (Third Modification) FIG. 14 shows a simplified example of the latch unit 4 described above. Also in this description, the same members as those in the above embodiment and the same functional parts are denoted by the same reference numerals, and only changes are described.

図１４（ａ）は図１２（ａ）に対応し、図１４（ｂ）は図１２（ｃ）に対応して示されている。すなわち、第３変形例では、第１変形例に対し、ラッチユニット４を省くと共に、係止部材２に循環カム２９を形成している点、係止部材２を付勢手段であるコイルばね４７により直にストライカ５と係合する方向へ付勢している点、循環カム２９をトレースする摺動ピン４８を図示を省いたカバー１５の内面側に支持している点で変更されている。   FIG. 14 (a) corresponds to FIG. 12 (a), and FIG. 14 (b) corresponds to FIG. 12 (c). That is, in the third modified example, the latch unit 4 is omitted and the circulating cam 29 is formed on the locking member 2 as compared with the first modified example, and the locking member 2 is a coil spring 47 which is an urging means. Therefore, the sliding pin 48 that traces the circulation cam 29 is supported on the inner surface side of the cover 15 (not shown).

このうち、循環カム２９は、上記したラッチボディ４１に設けられている循環カム４３と同様な構成であり、図１４のごとくハート形島２９ａの周囲に設けられて、左下側から右上側へ延びる住路溝と、該住路溝の上側に位置して左右に別れている係止用誘導溝及び解除用誘導溝と、これら両誘導溝の間に設けられた係止溝と、解除用誘導溝から下側へ延びる復路溝とを有している。コイルばね４７は、壁部１１の縦壁部分１１ｂ内面に突設された軸部１１ｃに支持された状態で配置され、通常は係止部材２をストライカ５と係合する方向へ付勢している。摺動ピン４８は、図示を省いたが、略Ｌ形からなり、Ｌ形の短片部が循環カム２９をトレースするようカバー１５に組み付けられる。この場合、摺動ピン４８は、カバー１５の内面に設けられた取付部に対し揺動可能で、かつ板ばねによりＬ形の長片部を押圧した状態に保持されている。そして、この変形例でも、上記（ア）〜（オ）の作動はラッチユニット４と関係する記載を循環カム２９、コイルばね４７、摺動ピン４８にて置き換えることで実質的に当てはまる。   Among them, the circulation cam 29 has the same configuration as the circulation cam 43 provided in the latch body 41 described above, and is provided around the heart-shaped island 29a as shown in FIG. 14 and extends from the lower left side to the upper right side. A dwelling groove, a locking guiding groove and a releasing guiding groove that are located on the upper side of the dwelling groove and are separated to the left and right, a locking groove provided between these guiding grooves, and a releasing guide And a return groove extending downward from the groove. The coil spring 47 is disposed in a state of being supported by a shaft portion 11c protruding from the inner surface of the vertical wall portion 11b of the wall portion 11, and normally biases the locking member 2 in a direction to engage with the striker 5. Yes. Although not shown, the sliding pin 48 is substantially L-shaped, and is assembled to the cover 15 so that the L-shaped short piece traces the circulation cam 29. In this case, the sliding pin 48 can swing with respect to the mounting portion provided on the inner surface of the cover 15 and is held in a state in which the L-shaped long piece portion is pressed by the leaf spring. In this modified example, the operations (a) to (e) are substantially applied by replacing the description related to the latch unit 4 with the circulation cam 29, the coil spring 47, and the sliding pin 48.

以上のように本発明は、請求項で特定される構成を実質的に備えておればよく、細部はこの形態及び各変形例を参考にして更に変更したり展開可能なものである。また、名称としては、要部を分かり易くしたり従来のラッチ装置と区別するためラッチ機構としたが、ラッチ装置ないしはラッチ組立体と称しても差し支えない。   As described above, the present invention only has to substantially include the configuration specified in the claims, and the details can be further modified or developed with reference to this embodiment and each modification. In addition, as a name, a latch mechanism is used in order to make the main part easy to understand or to distinguish from a conventional latch device, but it may be called a latch device or a latch assembly.

（ａ）は本発明形態の用途例を示す模式図、（ｂ）は発明形態のラッチ機構を装置化した際の外観を示す模式斜視図である。(A) is a schematic diagram which shows the example of a use of this invention form, (b) is a model perspective view which shows the external appearance at the time of making the latch mechanism of invention form into an apparatus. （ａ）は図１（ｂ）の正面図、（ｂ）は側面図、（ｃ）はＡ−Ａ線断面図である。(A) is a front view of FIG.1 (b), (b) is a side view, (c) is an AA sectional view. 上記ラッチ機構の主構成部品を示す模式分解斜視図である。It is a model disassembled perspective view which shows the main components of the said latch mechanism. （ａ）〜（ｃ）は上記ラッチ機構の動作を示す平面図である。(A)-(c) is a top view which shows operation | movement of the said latch mechanism. （ａ）と（ｂ）上記ラッチ機構のラッチユニットの作動を示す模式断面図である。(A) And (b) It is a schematic cross section which shows the action | operation of the latch unit of the said latch mechanism. （ａ）は上記ラッチ機構を組み込んでいるケースを示す平面図、（ｂ）はＢ−Ｂ線断面図である。(A) is a top view which shows the case incorporating the said latch mechanism, (b) is a BB sectional drawing. （ａ）は上記ラッチ機構の係止部材を示す平面図、（ｂ）はＣ−Ｃ線断面図である。(A) is a top view which shows the locking member of the said latch mechanism, (b) is CC sectional view taken on the line. （ａ）は上記ラッチ機構のカムを示す平面図、（ｂ）は右側面図、（ｃ）はＤ−Ｄ線拡大断面図である。(A) is a top view which shows the cam of the said latch mechanism, (b) is a right view, (c) is a DD line expanded sectional view. （ａ）は上記ラッチ機構を構成しているストライカの平面図、（ｂ）は右側面図である。(A) is a top view of the striker which comprises the said latch mechanism, (b) is a right view. 第１変形例のラッチ機構を示す模式斜視図である。It is a model perspective view which shows the latch mechanism of a 1st modification. （ａ），（ｂ）は上記図１０のラッチ機構の動作を示す平面図である。(A), (b) is a top view which shows operation | movement of the latch mechanism of the said FIG. 第２変形例のラッチ機構を示す模式斜視図である。It is a model perspective view which shows the latch mechanism of a 2nd modification. （ａ），（ｂ）は上記図１２のラッチ機構の動作を示す平面図である。(A), (b) is a top view which shows operation | movement of the latch mechanism of the said FIG. （ａ），（ｂ）は第３変形例のラッチ機構を図１１に対応して示す平面図である。(A), (b) is a top view which shows the latch mechanism of a 3rd modification corresponding to FIG.

符号の説明Explanation of symbols

１…ラッチ本体（１０はケース、１５はカバー、１１ガイド用壁部）
２…係止部材（２１は係止片部、２１ａは膨出部、２２は嵌合凹部、２４は係合部）
３…カム部材（３０は長片、３１は短片、３３は入力部、３４は伝達部）
４…ラッチユニット
５…ストライカ（５１は基部、５２アーム部、５３，５５ａ，５６は係止爪部）
６…べース
７…キッチン本体
８…引出体（固定体）
９…蓋体（移動体）
２９…循環カム
４０…ケーシング（ラッチユニット）
４１…ラッチボディ（ラッチユニット、４２は係止爪、４３は循環カム）
４４…コイルばね（付勢手段）
４５…摺動ピン（ラッチユニット）
４７…コイルばね（付勢手段）
４８…摺動ピン 1 ... Latch body (10 is case, 15 is cover, 11 guide wall)
2 ... locking member (21 is a locking piece part, 21a is a bulging part, 22 is a fitting recessed part, 24 is an engaging part)
3 ... Cam member (30 is a long piece, 31 is a short piece, 33 is an input part, 34 is a transmission part)
4 ... Latch unit 5 ... Strike (51 is a base, 52 arms, 53, 55a and 56 are locking claws)
6 ... Base 7 ... Kitchen body 8 ... Drawer (fixed)
9 ... Lid (moving body)
29 ... circulation cam 40 ... casing (latch unit)
41 ... Latch body (latch unit, 42 is a locking claw, 43 is a circulation cam)
44 ... Coil spring (biasing means)
45 ... Sliding pin (latch unit)
47 ... Coil spring (biasing means)
48 ... Sliding pin

Claims (8)

固定体もしくは移動体の何れか一方にラッチ本体を設けると共に、他方に該ラッチ本体に係脱されるストライカを設け、前記移動体を押込み操作により前記固定体側に保持し、次の押込み操作により前記保持を解除するラッチ機構において、
前記ラッチ本体は、前記ストライカと異方向に摺動可能であると共に、該ストライカと係合して該ストライカの抜け方向への移動を阻止する係止部材と、前記ストライカからの入力方向を変換して前記係止部材に伝達するカム部材とを備えていることを特徴とするラッチ機構。 A latch body is provided on either the fixed body or the movable body, and a striker that is engaged with and disengaged from the latch body is provided on the other side. The movable body is held on the fixed body side by pushing operation, and In the latch mechanism that releases the holding,
The latch main body is slidable in a different direction from the striker, and engages with the striker to prevent the striker from moving in the removal direction, and converts the input direction from the striker. And a cam member for transmitting to the locking member. 前記係止部材を前記ストライカと係合する方向に付勢する付勢手段と、前記係止部材を前記ストライカと係合解除した位置に保つ保持手段とを有していることを特徴とする請求項１記載のラッチ機構。   An urging unit that urges the locking member in a direction in which the locking member is engaged with the striker, and a holding unit that holds the locking member in a position disengaged from the striker. The latch mechanism according to Item 1. 前記係止部材を前記ストライカと係合解除する方向に付勢する付勢手段と、前記係止部材を前記ストライカと係合した状態に保つ保持手段とを有していることを特徴とする請求項１記載のラッチ機構。   An urging unit that urges the locking member in a direction to release the engagement with the striker, and a holding unit that keeps the locking member engaged with the striker. The latch mechanism according to Item 1. 前記ラッチ本体は、前記付勢手段及び前記保持手段をケーシングに配設したラッチユニットを有し、前記係止部材が前記ラッチユニットの前記保持手段に係脱されることを特徴とする請求項２又は３に記載のラッチ機構。   The latch body includes a latch unit in which the biasing means and the holding means are disposed in a casing, and the locking member is engaged with and disengaged from the holding means of the latch unit. Or the latch mechanism of 3. 前記保持手段は、循環カム及び該循環カムをトレースする摺動ピンを有していることを特徴とする請求項２から４の何れかに記載のラッチ機構。   The latch mechanism according to any one of claims 2 to 4, wherein the holding means includes a circulation cam and a sliding pin that traces the circulation cam. 前記カム部材は、前記ストライカから力を受ける入力部及び前記係止部材に力を伝達する伝達部とを有していることを特徴とする請求項１から５の何れかに記載のラッチ機構。   6. The latch mechanism according to claim 1, wherein the cam member includes an input portion that receives a force from the striker and a transmission portion that transmits the force to the locking member. 前記カム部材は、短片及び長片からなる略Ｌ形状であり、前記短片及び長片の略交差部分を枢支した状態で、前記短片を前記入力部として、前記長片を前記伝達部として用いられることを特徴とする請求項６に記載のラッチ機構。   The cam member has a substantially L shape composed of a short piece and a long piece, and the short piece is used as the input portion and the long piece is used as the transmission portion in a state where a substantially intersecting portion of the short piece and the long piece is pivotally supported. The latch mechanism according to claim 6, wherein: 前記ラッチ本体は、前記係止部材を配置しているケースと、前記ケースに設けられて前記係止部材を摺動可能で、かつ前記ストライカの出退方向への摺動を阻止する壁部を有していることを特徴とする請求項１から７の何れかに記載のラッチ機構。   The latch main body includes a case in which the locking member is disposed, and a wall portion that is provided in the case and that can slide the locking member and prevents the striker from sliding in and out. The latch mechanism according to claim 1, wherein the latch mechanism is provided.
JP2008066824A 2008-03-14 2008-03-14 Latch mechanism Active JP5084035B2 (en)

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JP2014218842A (en) * 2013-05-09 2014-11-20 株式会社ホンダロック Protective device for cylinder lock
WO2016072268A1 (en) * 2014-11-07 2016-05-12 株式会社ホンダロック Protective device for cylinder lock
JP2021046696A (en) * 2019-09-18 2021-03-25 株式会社Ｓｕｂａｒｕ Flap opening/closing mechanism

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US12043389B2 (en) 2019-10-29 2024-07-23 Safran Seats GB Limited Aircraft passenger accommodation unit

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JP2004238988A (en) 2003-02-07 2004-08-26 Fuji Heavy Ind Ltd Locking device for cover body
JP4863797B2 (en) 2006-07-12 2012-01-25 三協立山アルミ株式会社 Joinery

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014218842A (en) * 2013-05-09 2014-11-20 株式会社ホンダロック Protective device for cylinder lock
WO2016072268A1 (en) * 2014-11-07 2016-05-12 株式会社ホンダロック Protective device for cylinder lock
JP2016089527A (en) * 2014-11-07 2016-05-23 株式会社ホンダロック Cylinder lock protection device
CN107075868A (en) * 2014-11-07 2017-08-18 本田制锁有限公司 Cylinder lock protection device
JP2021046696A (en) * 2019-09-18 2021-03-25 株式会社Ｓｕｂａｒｕ Flap opening/closing mechanism
JP7368153B2 (en) 2019-09-18 2023-10-24 株式会社Subaru Flap opening/closing mechanism

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