JP4990999B2 - Door opening / closing mechanism and refrigerator - Google Patents

Door opening / closing mechanism and refrigerator Download PDF

Info

Publication number
JP4990999B2
JP4990999B2 JP2010163947A JP2010163947A JP4990999B2 JP 4990999 B2 JP4990999 B2 JP 4990999B2 JP 2010163947 A JP2010163947 A JP 2010163947A JP 2010163947 A JP2010163947 A JP 2010163947A JP 4990999 B2 JP4990999 B2 JP 4990999B2
Authority
JP
Japan
Prior art keywords
door
groove
cam
shutter
hinge pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2010163947A
Other languages
Japanese (ja)
Other versions
JP2012026613A (en
Inventor
稔 浦久保
卓哉 前田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP2010163947A priority Critical patent/JP4990999B2/en
Priority to MYPI2013000140A priority patent/MY157113A/en
Priority to PCT/JP2011/063317 priority patent/WO2012011330A1/en
Priority to CN201180035657.6A priority patent/CN103026156B/en
Publication of JP2012026613A publication Critical patent/JP2012026613A/en
Application granted granted Critical
Publication of JP4990999B2 publication Critical patent/JP4990999B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Refrigerator Housings (AREA)

Description

本発明は、扉を二方向から択一的に開閉する両開きの扉開閉機構及びそれを備えた冷蔵庫に関する。   The present invention relates to a double door opening / closing mechanism that opens and closes a door alternatively from two directions, and a refrigerator including the door opening / closing mechanism.

従来の扉開閉機構は特許文献１及び特許文献２に開示されている。この扉開閉機構は機器本体及び扉の対向する両端部に対称に配された一対のカム機構を備えている。カム機構は機器本体に扉の枢支軸を形成するヒンジピンが設けられ、扉にはヒンジピンを係合案内する溝カムが設けられる。   Conventional door opening / closing mechanisms are disclosed in Patent Document 1 and Patent Document 2. The door opening / closing mechanism includes a pair of cam mechanisms disposed symmetrically at opposite ends of the device main body and the door. The cam mechanism is provided with a hinge pin that forms a pivot shaft of the door in the device body, and the door is provided with a groove cam that engages and guides the hinge pin.

溝カムは連続する第１溝部及び第２溝部から成っている。第１溝部は一端を開放して枢支軸に垂直な面内で傾斜して形成される。第２溝部は第１溝部の他端に連続し、第１溝部の開放端から離れる方向に延びる。また、機器本体にはヒンジピンと同軸の円筒面から成る案内面を有するリブが設けられる。扉にはリブの案内面に摺動する円筒面を有したボスが設けられる。   The groove cam is composed of a continuous first groove portion and second groove portion. The first groove portion is formed so as to be inclined in a plane perpendicular to the pivot shaft with one end opened. The second groove portion is continuous with the other end of the first groove portion and extends in a direction away from the open end of the first groove portion. The device body is provided with a rib having a guide surface composed of a cylindrical surface coaxial with the hinge pin. The door is provided with a boss having a cylindrical surface that slides on the guide surface of the rib.

扉を閉じた状態では両方のカム機構は第１溝部と第２溝部との連結部分にヒンジピンを配した第１係止位置をとる。扉の一方を開くと該一方のヒンジピンは第１溝部内を開放端に向けて相対移動する。この時、第１溝部が傾斜するとともに両ヒンジピン間の距離が一定のため、他方のヒンジピンは第１溝部から離れる方向に第２溝部内を相対移動する。   In the state where the door is closed, both cam mechanisms take the first locking position in which the hinge pin is arranged at the connecting portion between the first groove and the second groove. When one of the doors is opened, the one hinge pin moves relative to the open end in the first groove. At this time, since the first groove portion is inclined and the distance between both hinge pins is constant, the other hinge pin relatively moves in the second groove portion in a direction away from the first groove portion.

そして、一方のカム機構のヒンジピンが溝カムとの係合を解除され、他方のカム機構はヒンジピンが第２溝部の端部に配された第２係止位置をとる。この時、ボスがリブに内接してリブの案内面に摺動する。カム機構は第２係止位置でヒンジピンを回転自在に支持するとともにリブとボスとの摺接によってヒンジピンのスライドが規制され、ヒンジピンを枢支軸として扉を回動することができる。   Then, the hinge pin of one cam mechanism is disengaged from the groove cam, and the other cam mechanism takes the second locking position in which the hinge pin is disposed at the end of the second groove portion. At this time, the boss is inscribed in the rib and slides on the guide surface of the rib. The cam mechanism rotatably supports the hinge pin at the second locking position, and the sliding of the hinge pin is regulated by the sliding contact between the rib and the boss, and the door can be rotated about the hinge pin as a pivot shaft.

尚、カム機構は左右対称に配されるため、同様の動作によって扉を他方から開くことができる。   Since the cam mechanism is arranged symmetrically, the door can be opened from the other side by the same operation.

特開２００６−１３２８３８号公報（第５頁−第７頁、第１図）JP 2006-132838 A (pages 5-7, FIG. 1) 特開２００１−１５９２６８号公報（第５頁−第７頁、第１図）JP 2001-159268 A (pages 5-7, FIG. 1)

上記従来の扉開閉機構によると、一方のカム機構のヒンジピン及び溝カムは扉の一方を開く場合に係合が解除され、扉の他方を開く場合に係合状態が維持される。このため、溝カムはヒンジピンが係脱可能なように扉の表面に露出して形成される。ヒンジピンを扉に設けて溝カムを機器本体に設けた場合も同様に、溝カムは機器本体の表面に露出して形成される。   According to the conventional door opening / closing mechanism, the hinge pin and the groove cam of one cam mechanism are disengaged when one of the doors is opened, and the engaged state is maintained when the other door is opened. For this reason, the groove cam is formed on the surface of the door so that the hinge pin can be engaged and disengaged. Similarly, when the hinge pin is provided on the door and the groove cam is provided on the device main body, the groove cam is formed to be exposed on the surface of the device main body.

しかしながら、扉を開いた際に露出した溝カムに異物が挟まると、扉を閉じることができなくなる。このため、扉開閉機構を設けた冷蔵庫等の機器の使用性が悪い問題があった。また、溝カムが露出して視認できるため、冷蔵庫の美観が損なわれる問題もあった。   However, if a foreign object is caught in the groove cam exposed when the door is opened, the door cannot be closed. For this reason, there was a problem that the usability of equipment such as a refrigerator provided with a door opening / closing mechanism was poor. Moreover, since the groove cam is exposed and visible, there is a problem that the beauty of the refrigerator is impaired.

本発明は、使用性及び美感を向上できる扉開閉機構及び冷蔵庫を提供することを目的とする。   An object of this invention is to provide the door opening / closing mechanism and refrigerator which can improve usability and aesthetics.

上記目的を達成するために本発明は、機器本体の開口部を覆う扉を、前記機器本体及び前記扉の対向する両端部に対称に配された一対のカム機構によって二方向から択一的に開閉する両開きの扉開閉機構において、前記カム機構が、前記機器本体及び前記扉の一方に設けられて前記扉の枢支軸を形成するヒンジピンと、前記機器本体及び前記扉の他方に設けられて前記ヒンジピンを係合案内する溝カムとを有し、前記扉を開いた際に前記溝カムを覆うとともに前記扉を閉じた際に前記溝カムから退避する溝カムシャッターを設けたことを特徴としている。   In order to achieve the above object, the present invention provides a door that covers an opening of a device main body, alternatively from two directions by a pair of cam mechanisms that are symmetrically disposed at opposite ends of the device main body and the door. In the double door opening / closing mechanism that opens and closes, the cam mechanism is provided on one of the device main body and the door to form a pivot shaft of the door, and on the other of the device main body and the door. A groove cam for engaging and guiding the hinge pin, and a groove cam shutter that covers the groove cam when the door is opened and retracts from the groove cam when the door is closed is provided. Yes.

この構成によると、扉の両端部に設けた一対のカム機構のヒンジピンと溝カムとの係脱によって扉が二方向から択一的に開閉される。扉が閉じられると溝カムシャッターが溝カムから退避し、両方のカム機構のヒンジピンと溝カムとが係合して扉を閉じた状態が保持される。扉を一方から開くと該一方のヒンジピンが溝カムから離脱する。この時、溝カムシャッターによって溝カムが覆われる。   According to this configuration, the door is selectively opened and closed from two directions by the engagement / disengagement of the hinge pin and the groove cam of the pair of cam mechanisms provided at both ends of the door. When the door is closed, the groove cam shutter is retracted from the groove cam, and the hinge pin and the groove cam of both cam mechanisms are engaged to maintain the closed state of the door. When the door is opened from one side, the one hinge pin is detached from the groove cam. At this time, the groove cam is covered by the groove cam shutter.

また本発明は、上記構成の扉開閉機構において、前記扉の閉成時に両側の前記カム機構が対称な第１係止位置をとるとともに、前記扉の一方を開く際に両方の前記カム機構によって前記扉が開放側から軸側へスライドして他方の前記カム機構が第２係止位置をとり、第２係止位置で前記扉をスライド規制して回動自在に支持することを特徴としている。   According to the present invention, in the door opening / closing mechanism configured as described above, the cam mechanisms on both sides take a symmetric first locking position when the door is closed, and both the cam mechanisms open the one of the doors. The door is slid from the open side to the shaft side, and the other cam mechanism takes a second locking position, and the door is slid at the second locking position and supported rotatably. .

この構成によると、扉を閉じた状態で両方のカム機構は溝カムの所定位置にヒンジピンが配される第１係止位置をとる。これにより、扉の脱落を防止して扉を閉じた状態が保持される。扉の一方を開くと該一方のカム機構はヒンジピンが溝カム内を相対移動して係合解除され、他方のカム機構はヒンジピンが溝カム内を相対移動して第２係止位置をとる。カム機構は第２係止位置でヒンジピンを回転自在に支持するとともにヒンジピンのスライドが規制され、ヒンジピンを枢支軸として扉を回動することができる。   According to this structure, both cam mechanisms take the 1st latching position by which a hinge pin is distribute | arranged to the predetermined position of a groove cam in the state which closed the door. As a result, the door is prevented from falling off and the door is closed. When one of the doors is opened, the one cam mechanism is disengaged by the relative movement of the hinge pin in the groove cam, and in the other cam mechanism, the hinge pin is relatively moved in the groove cam and takes the second locking position. The cam mechanism rotatably supports the hinge pin at the second locking position and the sliding of the hinge pin is restricted, and the door can be rotated about the hinge pin as a pivot shaft.

また本発明は、上記構成の扉開閉機構において、前記ヒンジピンと同心の円弧上に沿って形成される案内面を有するリブと、第２係止位置で前記案内面に摺動して前記ヒンジピンのスライドを規制するボスとを備え、前記溝カムシャッターが回動自在に支持されて前記溝カムを覆う方向に付勢されるとともに前記ヒンジピンまたは前記リブとの当接によって前記溝カムから退避することを特徴としている。   According to the present invention, in the door opening / closing mechanism having the above-described structure, a rib having a guide surface formed along an arc concentric with the hinge pin, and sliding on the guide surface at a second locking position, A boss for regulating the slide, wherein the groove cam shutter is rotatably supported and urged in a direction to cover the groove cam, and retracts from the groove cam by contact with the hinge pin or the rib. It is characterized by.

この構成によると、扉を一方から開いた状態で該一方のカム機構はヒンジピンと溝カムの係合が解除され、溝カムシャッターは付勢されて溝カムを覆う。この時、他方のカム機構は第２係止位置をとり、リブとボスとの当接によってヒンジピンのスライドが規制される。扉を閉じていくと該一方の溝カムシャッターがヒンジピンまたはリブに当接し、付勢力に抗して回動する。これにより、溝カムが露出してヒンジピンと溝カムとが係合し、カム機構が第１係止位置に配される。   According to this configuration, in the state where the door is opened from one side, the engagement of the hinge pin and the groove cam is released in the one cam mechanism, and the groove cam shutter is biased to cover the groove cam. At this time, the other cam mechanism takes the second locking position, and the sliding of the hinge pin is restricted by the contact between the rib and the boss. When the door is closed, the one groove cam shutter comes into contact with the hinge pin or the rib and rotates against the urging force. Thereby, the groove cam is exposed, the hinge pin and the groove cam are engaged, and the cam mechanism is arranged at the first locking position.

また本発明は、上記構成の扉開閉機構において、前記ヒンジピンを前記機器本体に設けるとともに、前記溝カム及び前記溝カムシャッターを前記扉の上面に設けたことを特徴としている。   According to the present invention, in the door opening / closing mechanism configured as described above, the hinge pin is provided in the device main body, and the groove cam and the groove cam shutter are provided on an upper surface of the door.

また本発明は、上記構成の扉開閉機構において、前記ヒンジピンを前記扉の下面に設けるとともに、前記溝カム及び前記溝カムシャッターを前記機器本体に設けたことを特徴としている。   According to the present invention, in the door opening / closing mechanism configured as described above, the hinge pin is provided on a lower surface of the door, and the groove cam and the groove cam shutter are provided in the device main body.

また本発明は、上記構成の扉開閉機構において、前記カム機構が、両方の前記ヒンジピン間に配されて両方の前記ヒンジピンと同心の円筒面が対向して形成される第１係合突起と、第１係合突起を摺動案内する第２係合突起と、第２係合突起の周囲に凹設して第１係合突起との干渉を回避する逃げ溝とを有し、前記扉を開いた際に前記逃げ溝を覆うとともに前記扉を閉じた際に前記逃げ溝から退避する逃げ溝シャッターを設けたことを特徴としている。   In the door opening / closing mechanism having the above-described configuration, the cam mechanism may be disposed between both of the hinge pins, and the first engagement protrusion formed so as to face a cylindrical surface concentric with both of the hinge pins; A second engaging protrusion for slidingly guiding the first engaging protrusion; and a relief groove provided around the second engaging protrusion to avoid interference with the first engaging protrusion; A relief groove shutter is provided that covers the relief groove when opened and retracts from the relief groove when the door is closed.

この構成によると、扉を閉じた状態で逃げ溝シャッターが逃げ溝から退避し、第１係合突起が逃げ溝内に配される。扉の一方を開き始めるとヒンジピンが溝カム内を相対移動するとともに、第１係合突起が第２係合突起と摺動して逃げ溝内を相対移動する。扉が開かれるとヒンジピンを溝カムとの係合が解除され、第１係合突起が逃げ溝から退避する。この時、逃げ溝が逃げ溝シャッターにより覆われる。   According to this configuration, the escape groove shutter is retracted from the escape groove with the door closed, and the first engagement protrusion is disposed in the escape groove. When one of the doors begins to open, the hinge pin relatively moves in the groove cam, and the first engaging protrusion slides with the second engaging protrusion to move relatively in the escape groove. When the door is opened, the hinge pin is disengaged from the groove cam, and the first engagement protrusion is retracted from the escape groove. At this time, the escape groove is covered with the escape groove shutter.

また本発明は、上記構成の扉開閉機構において、前記逃げ溝シャッターが回動自在に支持されて前記逃げ溝を覆う方向に付勢されるとともに第１係合突起との当接によって前記逃げ溝から退避することを特徴としている。この構成によると、扉を閉じていくと逃げ溝シャッターが第１係合突起に当接し、付勢力に抗して回動する。これにより、逃げ溝が露出して第１係合突起と第２係合突起とが摺動する。   According to the present invention, in the door opening / closing mechanism configured as described above, the escape groove shutter is rotatably supported and biased in a direction to cover the escape groove, and the escape groove is brought into contact with the first engagement protrusion. It is characterized by evacuating from. According to this configuration, when the door is closed, the escape groove shutter comes into contact with the first engagement protrusion and rotates against the urging force. As a result, the escape groove is exposed and the first engagement protrusion and the second engagement protrusion slide.

また本発明の冷蔵庫は、上記各構成の扉開閉機構を備えたことを特徴としている。   The refrigerator of the present invention is characterized by including the door opening / closing mechanism having the above-described configuration.

本発明によると、ヒンジピンと溝カムとが係合する一対のカム機構によって二方向から択一的に扉を開閉し、扉を開いた際に溝カムを覆うとともに扉を閉じた際に溝カムから退避する溝カムシャッターを設けたので、扉を開いた際に溝カムへの異物の侵入を防止することができる。従って、扉を閉じることができない不具合を回避することができ、扉開閉機構を備えた機器の使用性を向上することができる。また、扉を開いた際に溝カムが視認されないため、扉開閉機構を備えた機器の美感を向上することができる。   According to the present invention, the door is selectively opened and closed from two directions by a pair of cam mechanisms in which the hinge pin and the groove cam engage, and the groove cam is covered when the door is opened and the groove cam when the door is closed. Since the groove cam shutter for retreating from is provided, foreign matter can be prevented from entering the groove cam when the door is opened. Therefore, the malfunction which cannot close a door can be avoided, and the usability of the apparatus provided with the door opening / closing mechanism can be improved. Further, since the groove cam is not visually recognized when the door is opened, the aesthetics of the device provided with the door opening / closing mechanism can be improved.

本発明の実施形態の冷蔵庫を示す正面図The front view which shows the refrigerator of embodiment of this invention 本発明の実施形態の冷蔵庫を示す斜視図The perspective view which shows the refrigerator of embodiment of this invention 本発明の実施形態の冷蔵庫の冷蔵室扉の上方のカム機構を示す上面図The top view which shows the cam mechanism above the refrigerator compartment door of the refrigerator of embodiment of this invention 図３のＡ−Ａ断面図AA sectional view of FIG. 本発明の実施形態の冷蔵庫の冷蔵室扉を右側から開いた状態を説明する上面図The top view explaining the state which opened the refrigerator compartment door of the refrigerator of embodiment of this invention from the right side 本発明の実施形態の冷蔵庫の冷蔵室扉を右側から開いた状態を説明する上面図The top view explaining the state which opened the refrigerator compartment door of the refrigerator of embodiment of this invention from the right side 本発明の実施形態の冷蔵庫の冷蔵室扉を右側から開いた状態を説明する上面図The top view explaining the state which opened the refrigerator compartment door of the refrigerator of embodiment of this invention from the right side

以下に本発明の実施形態を図面を参照して説明する。図１は一実施形態の扉開閉機構を備えた冷蔵庫を示す正面図である。冷蔵庫１は断熱箱体から成る本体部２（機器本体）の上部に冷蔵室３が形成され、下部に冷凍室５が形成される。冷蔵室３の前面の開口部３ａ（図２参照）は冷蔵室扉４により開閉される。冷凍室５の前面の開口部は冷凍室扉６により開閉される。冷蔵室扉４は左右端にハンドル４ａ、４ｂを有し、左右の二方向から択一的に開閉することができる。冷凍室扉６は左右端にハンドル６ａ、６ｂを有し、左右の二方向から択一的に開閉することができる。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a refrigerator provided with a door opening / closing mechanism according to an embodiment. In the refrigerator 1, a refrigerator compartment 3 is formed in the upper part of a main body 2 (equipment main body) made of a heat insulating box, and a freezer compartment 5 is formed in the lower part. The opening 3 a (see FIG. 2) on the front surface of the refrigerator compartment 3 is opened and closed by the refrigerator compartment door 4. The opening on the front surface of the freezer compartment 5 is opened and closed by a freezer compartment door 6. The refrigerator compartment door 4 has handles 4a and 4b at the left and right ends, and can be opened and closed alternatively from the left and right directions. The freezer compartment door 6 has handles 6a and 6b at the left and right ends, and can be opened and closed alternatively from the left and right directions.

図２は冷蔵庫１の冷蔵室扉４を開いた状態を示す斜視図である。冷蔵室３の開口部３ａの上方及び下方には左右方向に延びる支持部材１０、１１が配される。支持部材１０の左右の両端部及び冷蔵室扉４の上面の左右の両端部には冷蔵室扉４の中心線に対して左右対称に配される一対のカム機構１２が設けられる。支持部材１１の左右の両端部及び冷蔵室扉４の下面の左右の両端部には同様の一対のカム機構１２が設けられる。   FIG. 2 is a perspective view showing a state in which the refrigerator compartment door 4 of the refrigerator 1 is opened. Support members 10, 11 extending in the left-right direction are disposed above and below the opening 3 a of the refrigerator compartment 3. A pair of cam mechanisms 12 arranged symmetrically with respect to the center line of the refrigerator compartment door 4 are provided at both the left and right ends of the support member 10 and the left and right ends of the upper surface of the refrigerator compartment door 4. A pair of similar cam mechanisms 12 are provided at both the left and right ends of the support member 11 and the left and right ends of the lower surface of the refrigerator compartment door 4.

冷蔵室扉４の上下にそれぞれ設けられる左右一対のカム機構１２によって冷蔵室扉４と本体部２とを係脱し、冷蔵室扉４を開閉する両開きの扉開閉機構が構成される。また、冷凍室扉６を開閉する扉開閉機構も同様のカム機構１２により構成される。   A pair of left and right cam mechanisms 12 provided on the upper and lower sides of the refrigerator compartment door 4 respectively disengage the refrigerator compartment door 4 and the main body portion 2 to form a double door opening / closing mechanism that opens and closes the refrigerator compartment door 4. A door opening / closing mechanism for opening / closing the freezer compartment door 6 is also constituted by the same cam mechanism 12.

図３は冷蔵室扉４の上方のカム機構１２を示す上面図であり、冷蔵室扉４が閉じられた状態を示している。また、図４は図３のＡ−Ａ断面図を示している。左右の両端部に配されるカム機構１２は支持部材１０に設けられるヒンジピン２１、リブ２４、第１係合突起２５（それぞれ図中、ハッチングで示す）と、冷蔵室扉４に設けられる溝カム３１、ボス３４、第２係合突起３５とを備えている。   FIG. 3 is a top view showing the cam mechanism 12 above the refrigerator compartment door 4, and shows a state in which the refrigerator compartment door 4 is closed. FIG. 4 is a cross-sectional view taken along the line AA in FIG. Cam mechanisms 12 arranged at both left and right ends include a hinge pin 21 provided on the support member 10, a rib 24, a first engagement protrusion 25 (each indicated by hatching in the figure), and a groove cam provided on the refrigerator compartment door 4. 31, a boss 34, and a second engagement protrusion 35.

ヒンジピン２１は支持部材１０にインサート成形された金属から成り、冷蔵室扉４の枢支軸を形成する。リブ２４は樹脂成形によってアーチ状に形成され、ヒンジピン２１の周囲に配される。リブ２４の内面にはヒンジピン２１と同心の円筒面から成る案内面２４ａが形成される。尚、リブ２４の案内面２４ａを多数のピンや突起部によって形成し、包絡面がヒンジピン２１と同心の円弧になるように形成してもよい。即ち、案内面２４ａがヒンジピン２１と同心の円弧上に沿って形成されていればよい。   The hinge pin 21 is made of metal insert-molded on the support member 10 and forms the pivot shaft of the refrigerator compartment door 4. The ribs 24 are formed in an arch shape by resin molding, and are arranged around the hinge pins 21. A guide surface 24 a made of a cylindrical surface concentric with the hinge pin 21 is formed on the inner surface of the rib 24. The guide surface 24a of the rib 24 may be formed by a large number of pins and protrusions, and the envelope surface may be formed as an arc concentric with the hinge pin 21. In other words, the guide surface 24a only needs to be formed along an arc concentric with the hinge pin 21.

第１係合突起２５は左右のヒンジピン２１の間に配置される。第１係合突起２５には近い方のヒンジピン２１と同心の円筒面２５ａと遠い方のヒンジピン２１と同心の円筒面２５ｂとが対向して設けられる。   The first engagement protrusion 25 is disposed between the left and right hinge pins 21. The first engaging protrusion 25 is provided with a cylindrical surface 25a concentric with the nearer hinge pin 21 and a cylindrical surface 25b concentric with the farther hinge pin 21 facing each other.

溝カム３１、ボス３４及び第２係合突起３５は一体に樹脂成形されたカム部材３０により形成され、冷蔵室扉４の上面カバー４ｃ上にカム部材３０が取り付けられる。溝カム３１はヒンジピン２１が係合し、連続する第１溝部３２と第２溝部３３とを有している。第１溝部３２は本体部２側を開放し、枢支軸に垂直な面内で開放端が内側に向くように傾斜して形成される。第２溝部３３は第１溝部３２の開放端と反対の端部に連続し、第１溝部３２から外側に向かって屈曲して第１溝部３２の開放端から離れる方向に延びる。   The groove cam 31, the boss 34, and the second engagement protrusion 35 are formed by a cam member 30 that is integrally molded with resin, and the cam member 30 is attached on the upper surface cover 4 c of the refrigerator compartment door 4. The groove cam 31 has a first groove portion 32 and a second groove portion 33 which are engaged with the hinge pin 21 and are continuous. The first groove portion 32 is formed to be inclined so that the main body portion 2 side is opened and the open end faces inward in a plane perpendicular to the pivot shaft. The second groove portion 33 continues to the end opposite to the open end of the first groove portion 32, bends outward from the first groove portion 32, and extends in a direction away from the open end of the first groove portion 32.

ボス３４は第２溝部３３が凹設され、リブ２４の案内面２４ａに摺動する円筒面３４ａを有している。また、ボス３４の周面には後述する第１係止位置でリブ２４との干渉を回避する逃げ部３４ｂ（図５参照）が設けられる。尚、リブ２４の案内面２４ａが円筒面から成る場合には、ボス３４の周面を多数のピンや突起部により形成してもよい。即ち、ボス３４の周面を形成する多数のピンや突起部の包絡面が円筒面となるように形成してもよい。   The boss 34 has a cylindrical surface 34 a in which the second groove 33 is recessed and slides on the guide surface 24 a of the rib 24. Further, on the peripheral surface of the boss 34, an escape portion 34b (see FIG. 5) for avoiding interference with the rib 24 at a first locking position described later is provided. When the guide surface 24a of the rib 24 is a cylindrical surface, the peripheral surface of the boss 34 may be formed by a large number of pins and protrusions. That is, you may form so that the enveloping surface of many pins and protrusions which form the peripheral surface of the boss | hub 34 may become a cylindrical surface.

第２係合突起３５は第１係合突起２５の円筒面２５ａ、２５ｂとそれぞれ摺動する摺動面３５ａ、３５ｂを有している。カム部材３０には第１係合突起２５との干渉を回避する逃げ溝３６が第２係合突起３５の周囲に凹設される。   The second engagement protrusion 35 has sliding surfaces 35a and 35b that slide with the cylindrical surfaces 25a and 25b of the first engagement protrusion 25, respectively. A relief groove 36 that avoids interference with the first engagement protrusion 25 is recessed in the cam member 30 around the second engagement protrusion 35.

また、上面カバー４ｃにはカム部材３０の上方に配されるシャッター支持部４０が取り付けられる。シャッター支持部４０は溝カム３１及びボス３４が露出する開口部４０ａと、第２係合突起３５及び逃げ溝３６が露出する開口部４０ｂとが開口する。開口部４０ａを介してヒンジピン２１及びリブ２４がそれぞれ溝カム３１及びボス３４と係合する。開口部４０ｂを介して第１係合突起２５が第２係合突起３５と係合する。   In addition, a shutter support portion 40 disposed above the cam member 30 is attached to the upper surface cover 4c. The shutter support portion 40 has an opening 40a from which the groove cam 31 and the boss 34 are exposed, and an opening 40b from which the second engagement protrusion 35 and the escape groove 36 are exposed. The hinge pin 21 and the rib 24 engage with the groove cam 31 and the boss 34 through the opening 40a, respectively. The first engagement protrusion 25 engages with the second engagement protrusion 35 through the opening 40b.

シャッター支持部４０には開口部４０ａ、４０ｂをそれぞれ開閉する溝カムシャッター４１及び逃げ溝シャッター４３が取り付けられる。溝カムシャッター４１は軸部４１ａでシャッター支持部４０に軸支され、軸部４１ａに配された捻りバネ４２によって開口部４０ａを閉じる方向に付勢される。溝カムシャッター４１は開口部４０ａを閉じて溝カム３１を覆う位置と、開口部４０ａを開いて溝カム３１から退避する位置との間を回動する。   A groove cam shutter 41 and a relief groove shutter 43 that open and close the openings 40a and 40b are attached to the shutter support portion 40, respectively. The groove cam shutter 41 is pivotally supported on the shutter support portion 40 by a shaft portion 41a, and is biased in a direction to close the opening 40a by a torsion spring 42 disposed on the shaft portion 41a. The groove cam shutter 41 rotates between a position where the opening 40 a is closed to cover the groove cam 31 and a position where the opening 40 a is opened and retracted from the groove cam 31.

逃げ溝シャッター４３は軸部４３ａでシャッター支持部４０に軸支され、軸部４３ａに配された捻りバネ４４によって開口部４０ｂを閉じる方向に付勢される。逃げ溝シャッター４３は開口部４０ｂを閉じて逃げ溝３６を覆う位置と、開口部４０ｂを開いて逃げ溝３６から退避する位置との間を回動する。また、シャッター支持部４０には溝カムシャッター４１及び逃げ溝シャッター４３を閉じた際に係止するストッパー４７、４８が下方に突出して形成される。   The escape groove shutter 43 is pivotally supported on the shutter support portion 40 by a shaft portion 43a, and is biased in a direction to close the opening portion 40b by a torsion spring 44 disposed on the shaft portion 43a. The escape groove shutter 43 rotates between a position where the opening 40b is closed and the escape groove 36 is covered, and a position where the opening 40b is opened and the escape groove 36 is retracted. The shutter support portion 40 is formed with stoppers 47 and 48 that project downward when the groove cam shutter 41 and the escape groove shutter 43 are closed.

次に、冷蔵室扉４の開閉時の動作を説明する。冷凍室扉６についても同様に動作する。冷蔵室扉４を閉じた状態では両側のカム機構１２は図３に示す第１係止位置に配置される。即ち、左右のヒンジピン２１が第１溝部３２と第２溝部３３との連結部に配置される。また、ボス３４の逃げ部３４ｂ（図５参照）がリブ２４の案内面２４ａに沿って配置される。   Next, the operation | movement at the time of opening and closing of the refrigerator compartment door 4 is demonstrated. The freezer compartment door 6 operates in the same manner. When the refrigerator compartment door 4 is closed, the cam mechanisms 12 on both sides are disposed at the first locking position shown in FIG. That is, the left and right hinge pins 21 are disposed at the connecting portion between the first groove portion 32 and the second groove portion 33. Further, the escape portion 34 b (see FIG. 5) of the boss 34 is disposed along the guide surface 24 a of the rib 24.

第１溝部３２は枢支軸に垂直な面内で前後方向に対して傾斜しているため、左右の第１溝部３２の開放端からヒンジピン２１が離脱することがない。従って、冷蔵室扉４１の脱落を防止することができる。   Since the first groove portion 32 is inclined with respect to the front-rear direction in a plane perpendicular to the pivot shaft, the hinge pin 21 is not detached from the open ends of the left and right first groove portions 32. Accordingly, it is possible to prevent the refrigerator compartment door 41 from falling off.

この時、溝カムシャッター４１はリブ２４に当接し、捻りバネ４２の付勢力に抗してシャッター支持部４０の開口部４０ａを開く。これにより、ヒンジピン２１が溝カム３１に係合する。同様に、逃げ溝シャッター４３は第１係合突起２５に当接し、捻りバネ４４の付勢力に抗してシャッター支持部４０の開口部４０ｂを開く。これにより、第１係合突起２５が逃げ溝３６内に配される。   At this time, the groove cam shutter 41 contacts the rib 24 and opens the opening 40 a of the shutter support portion 40 against the urging force of the torsion spring 42. Thereby, the hinge pin 21 is engaged with the groove cam 31. Similarly, the escape groove shutter 43 abuts on the first engagement protrusion 25 and opens the opening 40 b of the shutter support portion 40 against the urging force of the torsion spring 44. As a result, the first engagement protrusion 25 is disposed in the escape groove 36.

冷蔵室扉４を右側から開くと、右側のヒンジピン２１は第１溝部３２の係合案内によって第１溝部３２の開放端に向かって相対移動する。第１溝部３２は開放端が冷蔵室扉４の内側に向かって傾斜しており、第２溝部３３は第１溝部３２との連結部から外側に向かって延びている。   When the refrigerator door 4 is opened from the right side, the right hinge pin 21 is relatively moved toward the open end of the first groove 32 by the engagement guide of the first groove 32. The open end of the first groove portion 32 is inclined toward the inside of the refrigerator compartment door 4, and the second groove portion 33 extends outward from the connecting portion with the first groove portion 32.

両方のヒンジピン２１の間隔は一定のため、右側のヒンジピン２１が開放端に向かって内側に相対移動すると、左側のヒンジピン２１は第１溝部３２から離れる方向に第２溝部３３内を外側に相対移動する。これにより、冷蔵室扉４は回動しながら左側の軸側から右側の開放側にスライド移動する。   Since the distance between the two hinge pins 21 is constant, when the right hinge pin 21 is relatively moved inward toward the open end, the left hinge pin 21 is relatively moved outward in the second groove 33 in a direction away from the first groove 32. To do. Thereby, the refrigerator compartment door 4 slides from the left shaft side to the right open side while rotating.

そして、図５に示すように、左側のヒンジピン２１が第２溝部３３の閉じられた端部に到達し、カム機構１２が第２係止位置に配置される。この時、左側のボス３４の円筒面３４ａがリブ２４の案内面２４ａと摺動を開始する。これにより、ヒンジピン２１と第２溝部３３との係合により略前後方向への冷蔵室扉４の移動が規制され、ボス３４とリブ２４との係合により略左右方向への冷蔵室扉４の移動が規制される。従って、カム機構１２は第２係止位置で冷蔵室扉４をスライド規制して回動自在に支持する。   As shown in FIG. 5, the left hinge pin 21 reaches the closed end of the second groove 33, and the cam mechanism 12 is disposed at the second locking position. At this time, the cylindrical surface 34 a of the left boss 34 starts sliding with the guide surface 24 a of the rib 24. Thereby, the movement of the refrigerator compartment door 4 in the substantially front-rear direction is restricted by the engagement of the hinge pin 21 and the second groove portion 33, and the refrigerator door 4 of the refrigerator compartment door 4 in the substantially lateral direction is engaged by the engagement of the boss 34 and the rib 24. Movement is restricted. Therefore, the cam mechanism 12 slides and regulates the refrigerator compartment door 4 at the second locking position.

また、右側の第１係止部材２５の円筒面２５ｂと第２係止部材３５の摺動面３５ｂとが摺動し、左側の第１係止部材２５の円筒面２５ａと第２係止部材３５の摺動面３５ａとが摺動する。これにより、冷蔵室扉４をより安定して回動させることができる。   Further, the cylindrical surface 25b of the first locking member 25 on the right side and the sliding surface 35b of the second locking member 35 slide, and the cylindrical surface 25a of the first locking member 25 on the left side and the second locking member. The sliding surface 35a of 35 slides. Thereby, the refrigerator compartment door 4 can be rotated more stably.

更に冷蔵室扉４が開かれると、図６に示すように、右側のヒンジピン２１と溝カム３１との係合が解除される。また、右側の第１係止部材２５と第２係止部材３５との係合が解除される。これにより、右側のカム機構１２の係合が解除される。冷蔵室扉４は左側のヒンジピン２１を中心としてスライド規制されて回動する。   When the refrigerator door 4 is further opened, the engagement between the right hinge pin 21 and the groove cam 31 is released as shown in FIG. Further, the engagement between the right first locking member 25 and the second locking member 35 is released. Thereby, the engagement of the right cam mechanism 12 is released. The refrigerator compartment door 4 is slidably regulated around the left hinge pin 21 and rotates.

この時、右側の溝カムシャッター４１及び逃げ溝シャッター４３はそれぞれ捻りバネ４２、４４の付勢力によって開口部４０ａ、４０ｂを閉じ、ストッパー４７、４８により係止される。これにより、右側の溝カムシャッター４１により溝カム３１及びボス３４が覆われ、逃げ溝シャッター４３により第２係合突起３５及び逃げ溝３６が覆われる。   At this time, the groove cam shutter 41 and the escape groove shutter 43 on the right side close the openings 40a and 40b by the urging forces of the torsion springs 42 and 44, respectively, and are locked by the stoppers 47 and 48. Accordingly, the groove cam 31 and the boss 34 are covered by the right groove cam shutter 41, and the second engagement protrusion 35 and the escape groove 36 are covered by the escape groove shutter 43.

更に冷蔵室扉４が開かれると、図７に示すように、左側の第１係合突起２５と第２係合突起３５との係合が解除される。そして、第２溝部３３とヒンジピン２１との係合及びボス３４とリブ２４との係合によって冷蔵室扉４が回動する。この時、左側の逃げ溝シャッター４３は捻りバネ４４の付勢力によって開口部４０ｂを閉じ、ストッパー４８により係止される。これにより、左側の逃げ溝シャッター４３により第２係合突起３５及び逃げ溝３６が覆われる。   When the refrigerator door 4 is further opened, as shown in FIG. 7, the engagement between the left first engagement protrusion 25 and the second engagement protrusion 35 is released. The refrigerator compartment door 4 is rotated by the engagement between the second groove 33 and the hinge pin 21 and the engagement between the boss 34 and the rib 24. At this time, the left escape groove shutter 43 closes the opening 40 b by the urging force of the torsion spring 44 and is locked by the stopper 48. Accordingly, the second engagement protrusion 35 and the escape groove 36 are covered by the left escape groove shutter 43.

冷蔵室扉４を閉じる場合には左右のカム機構１２は上記と逆の動作が行われる。この時、溝カムシャッター４１はヒンジピン２１との当接により開き始めてリブ２４との当接により更に開かれ、溝カム３１から退避する。逃げ溝シャッター４３は第１係合突起２５に当接して開かれ、逃げ溝３６から退避する。   When the refrigerator door 4 is closed, the left and right cam mechanisms 12 are operated in reverse to the above. At this time, the groove cam shutter 41 starts to be opened by contact with the hinge pin 21, is further opened by contact with the rib 24, and retracts from the groove cam 31. The escape groove shutter 43 is opened in contact with the first engagement protrusion 25 and retracts from the escape groove 36.

また、冷蔵室扉４を左側から開閉すると、左右のカム機構１２は上記と左右対称に推移する。   Moreover, when the refrigerator compartment door 4 is opened and closed from the left side, the left and right cam mechanisms 12 change symmetrically with the above.

本実施形態によると、ヒンジピン２１と溝カム３１とが係合する一対のカム機構１２によって二方向から択一的に扉（冷蔵室扉４や冷凍室扉６）を開閉し、扉を開いた際に溝カム３１を覆うとともに扉を閉じた際に溝カム３１から退避する溝カムシャッター４１を設けたので、扉を開いた際に溝カム３１への異物の侵入を防止することができる。従って、扉を閉じることができない不具合を回避することができ、扉開閉機構を備えた冷蔵庫１の使用性を向上することができる。また、扉を開いた際に溝カム３１が視認されないため、冷蔵庫１の美感を向上することができる。   According to the present embodiment, the doors (the refrigerator compartment door 4 and the freezer compartment door 6) are opened and closed alternatively from two directions by the pair of cam mechanisms 12 in which the hinge pin 21 and the groove cam 31 are engaged, and the door is opened. Since the groove cam shutter 41 that covers the groove cam 31 and retracts from the groove cam 31 when the door is closed is provided, foreign matter can be prevented from entering the groove cam 31 when the door is opened. Therefore, the malfunction which cannot close a door can be avoided, and the usability of the refrigerator 1 provided with the door opening / closing mechanism can be improved. Moreover, since the groove cam 31 is not visually recognized when the door is opened, the aesthetics of the refrigerator 1 can be improved.

特に、冷蔵室扉４や冷凍室扉６の上面に溝カム３１が設けられた場合には溝カム３１に異物が侵入しやすくなるとともに視認されやすくなる。従って、ヒンジピン２１を本体部２（機器本体）に設けて溝カム３１及び溝カムシャッター４１を扉の上面に設けた場合に冷蔵庫１の使用性及び美感をより向上することができる。   In particular, when the groove cam 31 is provided on the upper surface of the refrigerator compartment door 4 or the freezer compartment door 6, foreign matter easily enters the groove cam 31 and is easily visible. Therefore, when the hinge pin 21 is provided in the main body 2 (equipment main body) and the groove cam 31 and the groove cam shutter 41 are provided on the upper surface of the door, the usability and aesthetics of the refrigerator 1 can be further improved.

また、扉の閉成時に両側のカム機構１２が対称な第１係止位置をとるとともに、扉の一方を開く際に両方のカム機構１２によって扉が軸側から開放側へスライドして他方のカム機構１２が第２係止位置をとり、第２係止位置で扉をスライド規制して回動自在に支持する。従って、二方向から択一的に扉を開閉する扉開閉機構を容易に実現することができる。   Further, when the door is closed, the cam mechanisms 12 on both sides take a symmetric first locking position, and when opening one of the doors, the door is slid from the shaft side to the open side by both cam mechanisms 12, and the other side The cam mechanism 12 takes the second locking position, and the door is slid at the second locking position to support it rotatably. Accordingly, it is possible to easily realize a door opening / closing mechanism that opens and closes the door alternatively from two directions.

また、ヒンジピン２１と同心の円弧上に沿う案内面２４ａを有するリブ２４と、第２係止位置で案内面２４ａに摺動してヒンジピン２１のスライドを規制するボス３４とを備え、溝カムシャッター４１が回動自在に支持されて溝カム３１を覆う方向に付勢されるとともにヒンジピン２１またはリブ２４との当接によって溝カム３１から退避する。これにより、溝カム３１を覆うとともに溝カム３１から退避する溝カムシャッター４１を容易に実現することができる。   The groove cam shutter includes a rib 24 having a guide surface 24a along a concentric arc concentric with the hinge pin 21 and a boss 34 that slides on the guide surface 24a at the second locking position to restrict sliding of the hinge pin 21. 41 is rotatably supported and urged in a direction to cover the groove cam 31 and retracts from the groove cam 31 by contact with the hinge pin 21 or the rib 24. Thereby, the groove cam shutter 41 that covers the groove cam 31 and retracts from the groove cam 31 can be easily realized.

また、両方のヒンジピン２１と同心の円筒面２５ａ、２５ｂを有する第１係合突起２５と、第１係合突起２５を摺動案内する第２係合突起３５と、第２係合突起３５の周囲に凹設して第１係合突起２５との干渉を回避する逃げ溝３６とを有し、扉を開いた際に逃げ溝３６を覆うとともに扉を閉じた際に逃げ溝３６から退避する逃げ溝シャッター４３を設けている。   Further, a first engagement protrusion 25 having cylindrical surfaces 25 a and 25 b concentric with both hinge pins 21, a second engagement protrusion 35 for slidingly guiding the first engagement protrusion 25, and a second engagement protrusion 35 It has a relief groove 36 that is recessed in the periphery and avoids interference with the first engagement protrusion 25, covers the relief groove 36 when the door is opened, and retreats from the relief groove 36 when the door is closed. An escape groove shutter 43 is provided.

これにより、扉を開いた際に逃げ溝３６への異物の侵入を防止することができる。従って、扉を閉じることができない不具合をより確実に回避することができるとともに、冷蔵庫１の美感をより向上することができる。   Thereby, when the door is opened, foreign matter can be prevented from entering the escape groove 36. Therefore, the trouble that the door cannot be closed can be avoided more reliably, and the aesthetics of the refrigerator 1 can be further improved.

特に、冷蔵室扉４や冷凍室扉６の上面に逃げ溝３６が設けられた場合には逃げ溝３６に異物が侵入しやすくなるとともに視認されやすくなる。従って、逃げ溝３６を扉の上面に設けた場合に冷蔵庫１の使用性及び美感をより向上することができる。尚、逃げ溝３６を第１係合突起２５に対して十分広い範囲に形成し、異物が逃げ溝３６に侵入しても扉を閉じることができるようにしてもよい。   In particular, when the escape groove 36 is provided on the upper surface of the refrigerator compartment door 4 or the freezer compartment door 6, foreign matter easily enters the escape groove 36 and is easily visible. Therefore, when the escape groove 36 is provided on the upper surface of the door, the usability and aesthetics of the refrigerator 1 can be further improved. The escape groove 36 may be formed in a sufficiently wide range with respect to the first engagement protrusion 25 so that the door can be closed even if foreign matter enters the escape groove 36.

また、逃げ溝シャッター４３が回動自在に支持されて逃げ溝３６を覆う方向に付勢されるとともに第１係合突起２５との当接によって逃げ溝３６から退避する。これにより、逃げ溝３６を覆うとともに逃げ溝３６から退避する逃げ溝シャッター４３を容易に実現することができる。   Further, the escape groove shutter 43 is rotatably supported and urged in a direction covering the escape groove 36, and retracts from the escape groove 36 by contact with the first engagement protrusion 25. Thereby, the escape groove shutter 43 which covers the escape groove 36 and retracts from the escape groove 36 can be easily realized.

本実施形態において、カム機構１２はヒンジピン２１及びリブ２４を本体部２に設けて溝カム３１及びボス３４を扉に設けているが、ヒンジピン２１及びリブ２４を扉に設けて溝カム３１及びボス３４を本体部２に設けてもよい。この時、扉の下面にヒンジピン２１が設けられた場合には上方に面する溝カム３１に異物が侵入しやすくなるとともに視認されやすくなる。従って、ヒンジピン２１を扉の下面に設けて溝カム３１及び溝カムシャッター４１を本体部２（機器本体）に設けた場合に冷蔵庫１の使用性及び美感をより向上することができる。   In this embodiment, the cam mechanism 12 is provided with the hinge pin 21 and the rib 24 on the main body 2 and the groove cam 31 and the boss 34 are provided on the door, but the hinge pin 21 and the rib 24 are provided on the door and the groove cam 31 and the boss are provided on the door. 34 may be provided in the main body 2. At this time, when the hinge pin 21 is provided on the lower surface of the door, foreign matter easily enters the groove cam 31 facing upward and is easily recognized. Therefore, when the hinge pin 21 is provided on the lower surface of the door and the groove cam 31 and the groove cam shutter 41 are provided on the main body 2 (equipment main body), the usability and aesthetics of the refrigerator 1 can be further improved.

また、カム機構１２は扉に設けた第２係合突起３５の周囲に逃げ溝３６を凹設しているが、本体部２の第１係合突起２５の周囲に第２係合突起３５との干渉を回避する逃げ溝３６を凹設してもよい。この時、本体部２に設けた逃げ溝３６が上方に面して配される場合に、冷蔵庫１の使用性及び美感をより向上することができる。   The cam mechanism 12 has a relief groove 36 formed around the second engagement projection 35 provided on the door. The second engagement projection 35 is provided around the first engagement projection 25 of the main body 2. A relief groove 36 that avoids the interference may be provided. At this time, when the escape groove 36 provided in the main body 2 is arranged facing upward, the usability and aesthetics of the refrigerator 1 can be further improved.

また、一対のカム機構１２を有する扉開閉機構を備えた冷蔵庫１について説明しているが、同様の扉開閉機構を他の機器に設けてもよい。この時、一対のカム機構１２を扉の上下または前後に設けて上下または前後から扉を開くようにしてもよい。   Moreover, although the refrigerator 1 provided with the door opening / closing mechanism which has a pair of cam mechanism 12 is demonstrated, you may provide the same door opening / closing mechanism in another apparatus. At this time, a pair of cam mechanisms 12 may be provided on the top and bottom or front and back of the door to open the door from the top and bottom or front and back.

本発明によると、扉を二方向から択一的に開閉する両開きの扉開閉機構を備えた冷蔵庫等の機器に利用することができる。   ADVANTAGE OF THE INVENTION According to this invention, it can utilize for apparatuses, such as a refrigerator provided with the double door opening / closing mechanism which opens and closes a door alternatively from two directions.

１ 冷蔵庫
２ 本体部
３ 冷蔵室
４ 冷蔵室扉
４ｃ 上面カバー
５ 冷凍室
６ 冷凍室扉
１０、１１ 支持部材
１２ カム機構
２１ ヒンジピン
２４ リブ
２４ａ 案内面
２５ 第１係合突起
３０ カム部材
３１ 溝カム
３２ 第１溝部
３３ 第２溝部
３４ ボス
３４ａ 円筒面
３４ｂ 逃げ部
３５ 第２係合突起
３６ 逃げ溝
４０ シャッター支持部
４１ 溝カムシャッター
４２、４４ 捻りバネ
４３ 逃げ溝シャッター
４７、４８ ストッパ DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Main body part 3 Refrigeration room 4 Refrigeration room door 4c Upper surface cover 5 Freezing room 6 Freezing room door 10, 11 Support member 12 Cam mechanism 21 Hinge pin 24 Rib 24a Guide surface 25 1st engagement protrusion 30 Cam member 31 Groove cam 32 First groove part 33 Second groove part 34 Boss 34a Cylindrical surface 34b Escape part 35 Second engagement protrusion 36 Escape groove 40 Shutter support part 41 Groove cam shutter 42, 44 Torsion spring 43 Escape groove shutter 47, 48 Stopper

Claims (7)

機器本体の開口部を覆う扉を、前記機器本体及び前記扉の対向する両端部に対称に配された一対のカム機構によって二方向から択一的に開閉する両開きの扉開閉機構において、
前記扉の閉成時に両側の前記カム機構が対称な第１係止位置をとるとともに、前記扉の一方を開く際に両方の前記カム機構によって前記扉が軸側から開放側へスライドして他方の前記カム機構が第２係止位置をとり、第２係止位置で前記扉をスライド規制して回動自在に支持し、
前記カム機構が、前記機器本体及び前記扉の一方に設けられて前記扉の枢支軸を形成するヒンジピンと、前記機器本体及び前記扉の他方に設けられて前記ヒンジピンを係合案内する溝カムと、前記ヒンジピンと同心の円弧上に沿って形成される案内面を有するリブと、第２係止位置で前記案内面に摺動して前記ヒンジピンのスライドを規制するボスとを有し、
前記扉を開いた際に前記溝カムを覆うとともに前記扉を閉じた際に前記溝カムから退避する溝カムシャッターを設け、
前記溝カムシャッターは回動自在に支持されて前記溝カムを覆う方向に付勢されるとともに前記ヒンジピンに当接した後に前記ヒンジピンから離れて前記リブに当接することによって前記溝カムから退避することを特徴とする扉開閉機構。 In the double door opening and closing mechanism that opens and closes the door that covers the opening of the device main body alternately from two directions by a pair of cam mechanisms that are symmetrically arranged on both opposite ends of the device main body and the door,
When the door is closed, the cam mechanisms on both sides take a symmetric first locking position, and when opening one of the doors, the door is slid from the shaft side to the open side by both of the cam mechanisms. The cam mechanism takes a second locking position, slides the door at the second locking position and supports the door in a freely rotatable manner,
The cam mechanism is provided on one of the device main body and the door to form a hinge shaft of the door, and the groove cam is provided on the other of the device main body and the door and engages and guides the hinge pin. And a rib having a guide surface formed along an arc concentric with the hinge pin, and a boss that slides on the guide surface at a second locking position to restrict sliding of the hinge pin ,
Providing a groove cam shutter that covers the groove cam when the door is opened and retracts from the groove cam when the door is closed ;
The groove cam shutter is rotatably supported and urged in a direction to cover the groove cam, and after retreating from the groove cam by coming into contact with the rib away from the hinge pin after coming into contact with the hinge pin. A door opening and closing mechanism. 前記溝カムシャッターは軸部で軸支され、前記リブは前記軸部の近傍で前記溝カムシャッターに当接し始めることを特徴とする請求項１に記載の扉開閉機構。 The door opening / closing mechanism according to claim 1 , wherein the groove cam shutter is pivotally supported by a shaft portion, and the rib starts to contact the groove cam shutter in the vicinity of the shaft portion . 前記ヒンジピンを前記機器本体に設けるとともに、前記溝カム及び前記溝カムシャッターを前記扉の上面に設けたことを特徴とする請求項１または請求項２に記載の扉開閉機構。 The door opening / closing mechanism according to claim 1 or 2, wherein the hinge pin is provided in the device main body, and the groove cam and the groove cam shutter are provided on an upper surface of the door. 前記ヒンジピンを前記扉の下面に設けるとともに、前記溝カム及び前記溝カムシャッターを前記機器本体に設けたことを特徴とする請求項１または請求項２に記載の扉開閉機構。 The door opening / closing mechanism according to claim 1 or 2 , wherein the hinge pin is provided on a lower surface of the door, and the groove cam and the groove cam shutter are provided in the device main body . 前記カム機構が、両方の前記ヒンジピン間に配されて両方の前記ヒンジピンと同心の円筒面が対向して形成される第１係合突起と、第１係合突起を摺動案内する第２係合突起と、第２係合突起の周囲に凹設して第１係合突起との干渉を回避する逃げ溝とを有し、前記扉を開いた際に前記逃げ溝を覆うとともに前記扉を閉じた際に前記逃げ溝から退避する逃げ溝シャッターを設けたことを特徴とする請求項１〜請求項４のいずれかに記載の扉開閉機構。 The cam mechanism is disposed between both of the hinge pins, a first engagement protrusion formed so as to face a cylindrical surface concentric with both the hinge pins, and a second engagement for slidingly guiding the first engagement protrusion. And a relief groove that is recessed around the second engagement protrusion to avoid interference with the first engagement protrusion, covers the escape groove when the door is opened, and The door opening / closing mechanism according to any one of claims 1 to 4, further comprising a relief groove shutter that retracts from the relief groove when closed . 前記逃げ溝シャッターが回動自在に支持されて前記逃げ溝を覆う方向に付勢されるとともに第１係合突起との当接によって前記逃げ溝から退避することを特徴とする請求項５に記載の扉開閉機構。 6. The escape groove shutter according to claim 5 , wherein the escape groove shutter is rotatably supported and urged in a direction covering the escape groove, and retracts from the escape groove by contact with the first engagement protrusion. Door opening and closing mechanism. 請求項１〜請求項６のいずれかに記載の扉開閉機構を備えたことを特徴とする冷蔵庫。




 A refrigerator comprising the door opening and closing mechanism according to any one of claims 1 to 6 .




JP2010163947A 2010-07-21 2010-07-21 Door opening / closing mechanism and refrigerator Active JP4990999B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2010163947A JP4990999B2 (en) 2010-07-21 2010-07-21 Door opening / closing mechanism and refrigerator
MYPI2013000140A MY157113A (en) 2010-07-21 2011-06-10 Door opening/closing mechanism and refrigerator
PCT/JP2011/063317 WO2012011330A1 (en) 2010-07-21 2011-06-10 Door opening/closing mechanism and refrigerator
CN201180035657.6A CN103026156B (en) 2010-07-21 2011-06-10 Door opening/closing mechanism and refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010163947A JP4990999B2 (en) 2010-07-21 2010-07-21 Door opening / closing mechanism and refrigerator

Publications (2)

Publication Number Publication Date
JP2012026613A JP2012026613A (en) 2012-02-09
JP4990999B2 true JP4990999B2 (en) 2012-08-01

Family

ID=45779761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010163947A Active JP4990999B2 (en) 2010-07-21 2010-07-21 Door opening / closing mechanism and refrigerator

Country Status (1)

Country Link
JP (1) JP4990999B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111542671B (en) * 2017-12-29 2021-09-28 夏普株式会社 Door opening device, door opening and closing device, and refrigerator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH055431Y2 (en) * 1988-12-05 1993-02-12
JP2002333267A (en) * 2001-05-09 2002-11-22 Sharp Corp Door opening/closing mechanism
JP2004278251A (en) * 2003-03-19 2004-10-07 Espec Corp Double wing door opening device
JP3689816B2 (en) * 2003-09-25 2005-08-31 シャープ株式会社 Door opening / closing mechanism
JP2009092285A (en) * 2007-10-05 2009-04-30 Sharp Corp Door opening and closing mechanism

Also Published As

Publication number Publication date
JP2012026613A (en) 2012-02-09

Similar Documents

Publication Publication Date Title
EP2821578B1 (en) Stay for opening and closing of door
US9863691B2 (en) Refrigerator
US8052236B2 (en) Refrigerator
JP5772696B2 (en) Double storage box
JP6745877B2 (en) Door opening and closing device and refrigerator equipped with the same
JP5756873B2 (en) Switchgear
JP2009092285A (en) Door opening and closing mechanism
WO2012011330A1 (en) Door opening/closing mechanism and refrigerator
WO2018032690A1 (en) Mechanism for opening door from the left or the right, and refrigerator
JP6224968B2 (en) Battery connection terminal protective cover
JP4990999B2 (en) Door opening / closing mechanism and refrigerator
WO2015078315A1 (en) Gate bidirectional-opening apparatus and refrigerator provided with apparatus
WO2015078314A1 (en) Gate bidirectional-opening apparatus and refrigerator provided with apparatus
JP2008240273A (en) Closer device for sliding door
JP4827746B2 (en) Door opening / closing mechanism
JP4833349B1 (en) Door opening / closing mechanism and refrigerator
JP6909296B2 (en) Door opening / closing mechanism
JP6819998B2 (en) Door body opening / closing device and various cabinets equipped with this door body opening / closing device
KR102004428B1 (en) Refrigerator
CN106766586B (en) Left-right door opening mechanism and refrigerator
US8729439B2 (en) Microwave oven with door change device
KR102045162B1 (en) Handle and freezer
JP2020103687A (en) Opening/closing mechanism of biparting door and washing machine including the same
JP2018126976A (en) Printer
JP6159116B2 (en) Hinge

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111026

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120410

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120502

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4990999

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150511

Year of fee payment: 3

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: R3D03