JP2011164699A - Outer door hinge structure of automatic vending machine - Google Patents

Outer door hinge structure of automatic vending machine Download PDF

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JP2011164699A
JP2011164699A JP2010023381A JP2010023381A JP2011164699A JP 2011164699 A JP2011164699 A JP 2011164699A JP 2010023381 A JP2010023381 A JP 2010023381A JP 2010023381 A JP2010023381 A JP 2010023381A JP 2011164699 A JP2011164699 A JP 2011164699A
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hinge
outer door
bearing
hinge pin
door
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JP5454182B2 (en
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Tomohiro Goto
友宏 後藤
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Fuji Electric Retail Systems Co Ltd
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Fuji Electric Retail Systems Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge structure of an outer door of an automatic vending machine, having improved rain-proof function as well as smooth opening/closing operability of the outer door. <P>SOLUTION: In the hinge structure for supporting an outer door so as to be opened or closed by a hinge pin 5 that passes through a top plate of a body cabinet between a fixed hinge plate 3 and a door frame upper face of the outer door 2, the hinge pin 5 is inserted through a door frame of the outer door 2 and is screw-fastened, and thereafter a bearing 7 installed to an upper half shaft part of the hinge pin is fitted in the hinge plate 3 for holding. Specifically, the hinge pin 5 includes a flange part 5a and a screw shaft 5b, the screw shaft 5b is inserted into a shaft hole of the door frame and is fastened by a nut 6, and the bearing 6 passes through the upper half shaft part and is fixed by caulking. The hinge pin 5 is installed with large-diameter guide plates 8, 9 to both upper and lower faces of the bearing 6 across the bearing 6, and a water cut-off gasket 10 is interposed between the guide plate 9 and the outer door 2 around a door frame penetration part of the hinge part 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は自動販売機の外扉を開閉自在に枢支するヒンジ構造に関する。   The present invention relates to a hinge structure that pivotally supports an outer door of a vending machine so that it can be opened and closed.

周知のように、自動販売機は商品を収納する本体キャビネットの前面に片開き式の外扉を装備しており、この外扉はその吊り側の上下端がヒンジ機構を介して本体キャビネットに枢支連結されている。
次に、前記外扉のヒンジ機構の従来構造を図３〜図５に示す。各図において、１は自動販売機の本体キャビネット、２は外扉、３は本体キャビネット１の天板に固定して前方に突出したでヒンジプレート、４はヒンジプレート３の固定ボルト、５はヒンジピンであり、外扉１の吊り側上端部が前記ヒンジプレート３，ヒンピン５を介して本体キャビネット１の前方に枢支連結されている。なお、図示してないが外扉２の前記軸穴に合わせて扉枠の下端面にも軸穴を穿孔しておき、本体キャビネット１の前面に設けたヒンジピンを前記軸穴に差し込んで外扉２を枢支保持するようにしている。
ここで、従来のヒンジ構造では、図５に示すようにヒンジプレート３にヒンジピン５を下向きに植設してカシメ止め，溶接などにより固着し、このヒンジピン５の先端を外扉２の扉枠上面に穿孔した軸穴に通してして外扉を開閉可能に枢支している（例えば、特許文献１参照）。
なお、特許文献１には前記ヒンジピン５と外扉２の軸穴との間の隙間を通じて雨水が庫内側に浸入するのを防ぐ手段として、ヒンジピン５の軸部を取り囲むようにしてヒンジプレート３，外扉２の扉枠に筒状の止水用部材（カラー）を設けた止水構造が開示されている。 As is well known, the vending machine is equipped with a single-open outer door on the front surface of the main cabinet for storing products, and the upper and lower ends of the outer door pivot on the main cabinet via a hinge mechanism. It is connected to a branch.
Next, the conventional structure of the hinge mechanism of the outer door is shown in FIGS. In each figure, 1 is a vending machine main body cabinet, 2 is an outer door, 3 is fixed to the top plate of the main body cabinet 1 and protrudes forward, 4 is a hinge plate 3 fixing bolt, 5 is a hinge pin The upper end of the outer door 1 on the suspension side is pivotally connected to the front of the main body cabinet 1 via the hinge plate 3 and the pin 5. Although not shown, a shaft hole is also drilled in the lower end surface of the door frame in alignment with the shaft hole of the outer door 2, and a hinge pin provided on the front surface of the main body cabinet 1 is inserted into the shaft hole so that the outer door. 2 is supported pivotally.
Here, in the conventional hinge structure, as shown in FIG. 5, the hinge pin 5 is planted downward on the hinge plate 3 and fixed by caulking, welding or the like, and the tip of the hinge pin 5 is attached to the upper surface of the door frame of the outer door 2. The outer door is pivotally supported so as to be opened and closed by passing through a shaft hole drilled in (see, for example, Patent Document 1).
In Patent Document 1, as a means for preventing rainwater from entering the inside of the cabinet through the gap between the hinge pin 5 and the shaft hole of the outer door 2, the hinge plate 3, A water stop structure in which a tubular water stop member (color) is provided on the door frame of the outer door 2 is disclosed.

特開平１１−１８５１２８号公報JP 11-185128 A

ところで、前記従来構造のように、ヒンジプレート３に固着したヒンジピン５を外扉２の扉枠上面に穿孔した軸穴に嵌挿したヒンジ構造では、外扉２を開け，閉めする度に外扉２の扉枠とヒンジピン５の軸部との間が擦れ合ってその摺動面には重量物である外扉２の自重による偏心荷重が加わる。このために、自動販売機の外扉を繰り返し開閉操作すると、外扉２の扉枠に穿孔した軸穴，ヒンジピン軸部が次第に磨耗してヒンジピン５との間のガタツキが大きくなり、これが原因で外扉をスムーズに開閉できなくなったり、扉の取付け姿勢が傾いたりする不具合が生じるようになる。
そのほか、従来構造では外扉２の扉枠に穿孔した軸穴とヒンジピン５との間に残る隙間を通じて外方から雨水が庫内側に浸入するおそれがあるため、雨水の浸入を防ぐ手段として先記の特許文献１に開示されているような複雑な止水構造を設ける必要がある。
この発明は上記の点に鑑みなされたものであり、その目的は前記課題を解決し、長期の使用に亙って外扉のスムーズな開閉操作性と併せて、高い雨水浸入防止機能の確保が図れるように改良した自動販売機の外扉のヒンジ構造を提供することにある。 By the way, in the hinge structure in which the hinge pin 5 fixed to the hinge plate 3 is inserted into the shaft hole drilled in the upper surface of the door frame of the outer door 2 as in the conventional structure, the outer door 2 is opened and closed every time the outer door 2 is opened and closed. The door frame 2 and the shaft portion of the hinge pin 5 rub against each other, and an eccentric load due to the weight of the outer door 2, which is a heavy object, is applied to the sliding surface. For this reason, when the outer door of the vending machine is repeatedly opened and closed, the shaft hole and the hinge pin shaft portion drilled in the door frame of the outer door 2 are gradually worn out, and the backlash between the hinge pin 5 increases and this is the cause. There arises a problem that the outer door cannot be opened and closed smoothly, or the door mounting posture is inclined.
In addition, in the conventional structure, rainwater may enter from the outside through the gap between the shaft hole drilled in the door frame of the outer door 2 and the hinge pin 5, so that the above-mentioned means can be used to prevent rainwater from entering. It is necessary to provide a complicated water-stopping structure as disclosed in Japanese Patent Application Laid-Open No. H10-228707.
The present invention has been made in view of the above points, and its object is to solve the above-mentioned problems, and to ensure a high rainwater intrusion prevention function together with smooth opening and closing operability of the outer door over a long period of use. An object of the present invention is to provide a hinge structure for an outer door of a vending machine improved as shown.

上記目的を達成するために、この発明によれば、本体キャビネットの天板に固定して前方に突出したヒンジプレートと外扉の扉枠上面との間にヒンジピンを通して本体キャビネットの前面に配した外扉を開閉可能に枢支する自動販売機の外扉のヒンジ構造において、
前記ヒンジピンは、その下半部をねじ軸としてその上側の中間部位に鍔部を形成した構造になり、前記ねじ軸を外扉の扉枠上面に穿孔した軸穴に上方から嵌挿してナット締結するとともに、ヒンジピンの上半軸部にはベアリングを嵌挿してその内輪をカシメ止めした上で、該ベアリングの外輪をヒンジプレートの軸穴に嵌着して軸支保持するものとする（請求項１）。
また、上記ヒンジ機構には次記のような部材を付加した態様で構成することができる。
（１）前記ヒンジピンの上半軸部に、ベアリングを挟んでその上下両面にベアリングよりも径大なガイド板を組み付ける（請求項２）。
（２）前項（１）において、前記ヒンジピンの扉枠貫通部を囲んでベアリングの下面側に配したガイド板と外扉の扉枠上面との間に止水パッキンを介装する（請求項３）。 In order to achieve the above-described object, according to the present invention, an outer plate disposed on the front surface of the main body cabinet through a hinge pin between the hinge plate fixed to the top plate of the main body cabinet and protruding forward and the door frame upper surface of the outer door. In the hinge structure of the outer door of the vending machine that pivots so that the door can be opened and closed,
The hinge pin has a structure in which a lower half is a screw shaft and a flange is formed at an upper intermediate portion thereof, and the screw shaft is inserted into a shaft hole drilled in the upper surface of the door frame of the outer door from above and tightened with a nut. In addition, a bearing is inserted into the upper half shaft portion of the hinge pin and its inner ring is crimped, and then the outer ring of the bearing is fitted into the shaft hole of the hinge plate to support the shaft. 1).
Further, the hinge mechanism can be configured in such a manner that the following members are added.
(1) A guide plate having a diameter larger than that of the bearing is assembled to both upper and lower surfaces of the hinge pin on the upper half shaft portion of the hinge pin.
(2) In the preceding item (1), a waterproof seal is interposed between the guide plate that surrounds the door frame penetrating portion of the hinge pin and is arranged on the lower surface side of the bearing and the upper surface of the door frame of the outer door. ).

上記構成によれば、外扉の扉枠に固着したヒンジピンにベアリング（転がり軸受）を組み付けた上で、このベアリングを介してヒンジピンをヒンジプレートに軸支保持しているおり、これにより外扉の開閉によって扉枠とヒンジピンとの間に相対的な摺動，磨耗が生じることがなく、長期使用に亙って外扉のスムーズな開閉性を安定確保できる。また扉枠に穿孔した軸貫通穴をその表裏両面からヒンジピンの鍔部と締結ナットとで挟持するようにしたので、扉枠の軸穴とヒンジピンとの間に雨水の浸入経路となる隙間が生じない。
また、前記ベアリングを挟んでその上下両面にベアリングよりも径大なガイド板をヒンジピンの上部側軸部に組み付けておくことにより、当該ヒンジ機構の組立途中，組立後の状態でベアリングがヒンジプレートの軸穴から抜け出るのを防止できる。
さらに、前記ヒンジピンの扉枠貫通部を囲んでベアリングの下面側に配したガイド板と外扉の扉枠上面との間に止水パッキンを介装することにより、庫内への雨水浸入防止機能をより一層高めることができる。 According to the above configuration, after the bearing (rolling bearing) is assembled to the hinge pin fixed to the door frame of the outer door, the hinge pin is pivotally supported and held on the hinge plate via the bearing. Opening and closing does not cause relative sliding or wear between the door frame and the hinge pin, and the smooth opening and closing of the outer door can be stably secured over a long period of use. In addition, since the shaft through hole drilled in the door frame is sandwiched between the hinge pin flange and the fastening nut from both front and back surfaces, a gap is formed between the shaft hole of the door frame and the hinge pin as a rainwater infiltration path. Absent.
In addition, a guide plate having a diameter larger than that of the bearing is assembled to the upper side shaft portion of the hinge pin on both upper and lower sides of the bearing so that the bearing is connected to the hinge plate during and after the assembly of the hinge mechanism. It can be prevented from coming out of the shaft hole.
Furthermore, a rainwater intrusion preventing function is provided by interposing a water stop packing between the guide plate disposed on the lower surface side of the bearing surrounding the hinge pin door frame penetration and the door frame upper surface of the outer door. Can be further increased.

この発明の実施例による外扉の上部側ヒンジ機構の組立構造を表す側視断面図である。It is side sectional drawing showing the assembly structure of the upper side hinge mechanism of the outer door by the Example of this invention. 図１におけるヒンジ機構の分解図である。It is an exploded view of the hinge mechanism in FIG. この発明の実施対象となる自動販売機の扉開放状態を表す俯瞰図である。It is a bird's-eye view showing the door open state of the vending machine used as the implementation object of this invention. 図３における扉ヒンジ部周辺の側視拡大図である。It is a side view enlarged view of the door hinge part periphery in FIG. 図４の要部構造を表す模式断面図である。It is a schematic cross section showing the principal part structure of FIG.

以下、この発明の実施の形態を図１，図２に示す実施例に基づいて説明する。なお、実施例の図中で図４，図５に対応する部材には同じ符号を付してその説明は省略する。
図示実施例のヒンジ機構は、従来構造と逆にヒンジピン５が外扉２の扉枠に固着されており、このヒンジピン５にベアリング７を組み付けた上で、該ベアリング７をヒンジプレート３の軸穴に嵌着してヒンジピン５を軸支保持するようにしている。
すなわち、ヒンジピン５はその軸上の中間部位に鍔部５ａを形成し、この鍔部５ａを境に下半部をねじ軸５ｂとした構造になり、前記ねじ軸５ｂを外扉２の扉枠上面に穿孔した軸穴へ上方から嵌挿し、ナット６で扉枠に締結している。なお、６ａはワッシャである。また、上半軸部にはベアリング７を嵌挿した上で、軸部の上端をカシメ加工してベアリング７の内輪をカシメ止めしており、符号５ｃはそのカシメ頭部である。
また、図示実施例の構造では、ヒンジピン５の上半軸部にはベアリング７を挟んでその上下面側にガイド板８，９を介挿している。このガイド板８，９は、後記の組立て手順によりベアリング７の外輪をヒンジプレート３の穴に嵌着する組立行程の過程でベアリング７がヒンジプレート３の軸穴から抜け出て脱落するのを防ぐ役目を果たすもので、ベアリング７よりも径大な鋼板製の皿形リングで作られている。さらに、図１の組立状態では下部側のガイド板９の周縁部と外扉２の扉枠上面との間にクッション材で作られたリング状の止水パッキン１０が介装されている。なお、この止水パッキン１０はヒンジピン５の鍔部５ａと扉枠との間に介装しても良い。 Embodiments of the present invention will be described below based on the examples shown in FIGS. In the drawing of the embodiment, members corresponding to those in FIG. 4 and FIG.
In the hinge mechanism of the illustrated embodiment, the hinge pin 5 is fixed to the door frame of the outer door 2, contrary to the conventional structure. So that the hinge pin 5 is pivotally supported.
That is, the hinge pin 5 has a structure in which a flange portion 5a is formed at an intermediate portion on the shaft, and the lower half portion is a screw shaft 5b with the flange portion 5a as a boundary. It is inserted from above into a shaft hole drilled in the upper surface and fastened to the door frame with a nut 6. In addition, 6a is a washer. Further, after the bearing 7 is fitted and inserted into the upper half shaft portion, the upper end of the shaft portion is crimped to crimp the inner ring of the bearing 7, and reference numeral 5c denotes the crimping head.
Further, in the structure of the illustrated embodiment, the guide plates 8 and 9 are inserted on the upper and lower surfaces of the hinge pin 5 with the bearing 7 interposed therebetween. The guide plates 8 and 9 serve to prevent the bearing 7 from slipping out of the shaft hole of the hinge plate 3 during the assembly process in which the outer ring of the bearing 7 is fitted into the hole of the hinge plate 3 by the assembly procedure described later. It is made of a plate-shaped ring made of a steel plate having a diameter larger than that of the bearing 7. Further, in the assembled state of FIG. 1, a ring-shaped water-proof packing 10 made of a cushion material is interposed between the peripheral portion of the lower guide plate 9 and the door frame upper surface of the outer door 2. The water-stop packing 10 may be interposed between the flange 5a of the hinge pin 5 and the door frame.

上記構成になるヒンジ機構の組立て、および外扉２への取付け作業は次記のような手順で行う。まず、ヒンジピン５の上半軸部に上方からガイド板９，およびベアリング７を嵌挿し、この状態でベアリング７をヒンジプレート３に穿孔した軸穴へ下方から嵌め込む。続いてヒンジピン５の上部軸部にガイド板８を通してベアリング７の上に重ね合わせ、この状態でヒンジピン５の軸部上端にカシメ加工を施してベアリング７を固定する。このヒンジ機構の組立状態では、ベアリング７の上下両側に径大なガイド板８，９が張り出しているのでベアリング７がヒンジプレート３から上にも下にも抜け出て脱落するおそれはない。
次に、上記したヒンジ機構の組立体を次記のような手順で外扉２の扉枠上面に取付ける。まず、ヒンジピン５のねじ軸５ａを扉枠上面に穿孔した軸穴に上方から挿入し、この位置でねじ軸に螺合したナット６を締め付けてヒンジピン５を扉枠に固定する。そして、外扉２を本体キャビネット１（図３，図４参照）の前面に装着するには、扉枠の下端面側に穿孔した軸穴を本体キャビネット１の前面に設けた支軸ピン（不図示）に差し込んだ上で、ヒンジピン５の上半軸部に連結した前記ヒンジプレート３の取付基部を本体キャビネットの天板にボルト４（図４参照）で固定する。 The assembly of the hinge mechanism having the above configuration and the mounting operation to the outer door 2 are performed according to the following procedure. First, the guide plate 9 and the bearing 7 are inserted into the upper half shaft portion of the hinge pin 5 from above, and in this state, the bearing 7 is inserted into the shaft hole drilled in the hinge plate 3 from below. Subsequently, the upper shaft portion of the hinge pin 5 is superposed on the bearing 7 through the guide plate 8, and in this state, the upper end of the shaft portion of the hinge pin 5 is crimped to fix the bearing 7. In the assembled state of the hinge mechanism, since the large guide plates 8 and 9 are projected on both the upper and lower sides of the bearing 7, there is no possibility that the bearing 7 slips out from the hinge plate 3 upward and downward.
Next, the assembly of the hinge mechanism described above is attached to the upper surface of the door frame of the outer door 2 in the following procedure. First, the screw shaft 5a of the hinge pin 5 is inserted from above into a shaft hole drilled in the upper surface of the door frame, and the nut 6 screwed to the screw shaft is tightened at this position to fix the hinge pin 5 to the door frame. Then, in order to mount the outer door 2 on the front surface of the main body cabinet 1 (see FIGS. 3 and 4), a shaft pin (not suitable) provided with a shaft hole drilled on the lower end side of the door frame on the front surface of the main body cabinet 1 is used. Then, the mounting base portion of the hinge plate 3 connected to the upper half shaft portion of the hinge pin 5 is fixed to the top plate of the main body cabinet with bolts 4 (see FIG. 4).

上記の構成によれば、外扉２の扉枠上面に固着したヒンジピン５がベアリング７を介してヒンジプレート３に軸支保持されており、これにより扉の開閉操作をスムーズに行うことができる。しかも、外扉２の開閉操作時にヒンジピン５の軸が扉枠の軸穴に摺動することがないので、従来構造で問題となっていたヒンジピン５の磨耗、ガタツキ、およびヒンジピン５のガタツキに起因した扉取付け姿勢の傾き発生もなくて耐久性，信頼性が従来構造と比べて大幅に向上する。
また、ヒンジピン５はその鍔部５ａとナット６で扉枠に穿孔した軸穴を上下両面から挟持，閉塞しているので、従来構造のように扉枠の軸穴とヒンジピン５の軸部との間に雨水の浸入経路となる隙間の生じることがなく、これにより雨水の浸入に対して高い浸入防止機能を確保できる。加えて、図示実施例のようにガイド板９と扉枠上面との間，あるいは鍔部５ａと扉枠上面との間に止水パッキン１０を介装しておくことで、雨水の浸入防止機能を一層高めることができる。 According to said structure, the hinge pin 5 fixed to the door frame upper surface of the outer door 2 is pivotally supported by the hinge plate 3 via the bearing 7, Thereby, opening / closing operation | movement of a door can be performed smoothly. Moreover, since the shaft of the hinge pin 5 does not slide into the shaft hole of the door frame when the outer door 2 is opened and closed, the hinge pin 5 is worn and rattle, and the hinge pin 5 is rattled, which has been a problem in the conventional structure. Durability and reliability are greatly improved compared to the conventional structure without any tilting of the door mounting posture.
Further, the hinge pin 5 has the shaft hole drilled in the door frame with the flange 5a and the nut 6 sandwiched and closed from both the upper and lower sides, so that the shaft hole of the door frame and the shaft portion of the hinge pin 5 are connected as in the conventional structure. There is no gap as a rainwater intrusion path between them, thereby ensuring a high infiltration prevention function against rainwater intrusion. In addition, as shown in the illustrated embodiment, a rainwater intrusion prevention function is provided by interposing a water stop packing 10 between the guide plate 9 and the door frame upper surface or between the flange 5a and the door frame upper surface. Can be further enhanced.

１：本体キャビネット
２：外扉
３：ヒンジプレート
５：ヒンジピン
５ａ：鍔部
５ｂ：ねじ軸
５ｃ：カシメ頭部
６：ナット
７：ベアリング
８，９：ガイド板
１０：止水パッキン 1: body cabinet 2: outer door 3: hinge plate 5: hinge pin 5a: flange 5b: screw shaft 5c: caulking head 6: nut 7: bearing 8, 9: guide plate 10: water blocking packing

Claims (3)

本体キャビネットの前面に配備した外扉を開閉可能に枢支する自動販売機の外扉のヒンジ構造であり、本体キャビネットの天板に固定して前方に突出したヒンジプレートと外扉の扉枠上面との間にヒンジピンを通して枢支したものにおいて、
前記ヒンジピンは、その下半部をねじ軸としてその上側の中間部位に鍔部を形成した構造になり、前記ねじ軸を外扉の扉枠上面に穿孔した軸穴に上方から嵌挿してナット締結するとともに、ヒンジピンの上半軸部にはベアリングを嵌挿してその内輪をカシメ止めした上で、該ベアリングの外輪をヒンジプレートの軸穴に嵌着して軸支保持したことを特徴とする自動販売機の外扉のヒンジ構造。 The hinge structure of the vending machine's outer door that pivotally supports the outer door deployed on the front of the main cabinet so that it can be opened and closed. The hinge plate is fixed to the top panel of the main cabinet and protrudes forward. In what is pivotally supported through a hinge pin between
The hinge pin has a structure in which a lower half is a screw shaft and a flange is formed at an upper intermediate portion thereof, and the screw shaft is inserted into a shaft hole drilled in the upper surface of the door frame of the outer door from above and tightened with a nut. In addition, an automatic bearing is characterized in that a bearing is inserted into the upper half shaft portion of the hinge pin and the inner ring thereof is crimped and the outer ring of the bearing is fitted into the shaft hole of the hinge plate and supported by the shaft. The hinge structure of the vending machine door. 請求項２に記載の外扉のヒンジ構造において、ヒンジピンの上半軸部に、ベアリングを挟んでその上下両面にベアリングよりも径大なガイド板を組み付けたことを特徴とする自動販売機の外扉のヒンジ構造。   3. The hinge structure of an outer door according to claim 2, wherein a guide plate having a diameter larger than that of the bearing is assembled on both upper and lower surfaces of the upper half shaft portion of the hinge pin with the bearing interposed therebetween. Door hinge structure. 請求項３に記載の外扉のヒンジ構造において、ヒンジピンの扉枠貫通部を囲んでベアリングの下面側に配したガイド板と外扉の扉枠上面との間に止水パッキンを介装したことを特徴とする自動販売機の外扉のヒンジ構造。   The hinge structure of the outer door according to claim 3, wherein a water-stopping packing is interposed between a guide plate that surrounds the door frame penetrating portion of the hinge pin and is arranged on the lower surface side of the bearing and the door frame upper surface of the outer door. The hinge structure of the outer door of the vending machine characterized by
JP2010023381A 2010-02-04 2010-02-04 Vending machine outer door hinge structure Expired - Fee Related JP5454182B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106088880A (en) * 2016-07-27 2016-11-09 王鼎兴 Safe hinge for antitheft door
CN106088879A (en) * 2016-07-27 2016-11-09 王鼎兴 Self-opening door spiral safe hinge
KR102014841B1 (en) * 2018-06-28 2019-08-27 동성산업 주식회사 Anti jamming function for door

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106088880A (en) * 2016-07-27 2016-11-09 王鼎兴 Safe hinge for antitheft door
CN106088879A (en) * 2016-07-27 2016-11-09 王鼎兴 Self-opening door spiral safe hinge
KR102014841B1 (en) * 2018-06-28 2019-08-27 동성산업 주식회사 Anti jamming function for door

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