JP7467281B2 - Hinge - Google Patents

Hinge Download PDF

Info

Publication number
JP7467281B2
JP7467281B2 JP2020139999A JP2020139999A JP7467281B2 JP 7467281 B2 JP7467281 B2 JP 7467281B2 JP 2020139999 A JP2020139999 A JP 2020139999A JP 2020139999 A JP2020139999 A JP 2020139999A JP 7467281 B2 JP7467281 B2 JP 7467281B2
Authority
JP
Japan
Prior art keywords
hinge element
slope
steep slope
upper hinge
steep
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
JP2020139999A
Other languages
Japanese (ja)
Other versions
JP2022035570A (en
Inventor
太地 内山
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.)
Sugatsune Kogyo Co Ltd
Original Assignee
Sugatsune Kogyo Co Ltd
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 Sugatsune Kogyo Co Ltd filed Critical Sugatsune Kogyo Co Ltd
Priority to JP2020139999A priority Critical patent/JP7467281B2/en
Publication of JP2022035570A publication Critical patent/JP2022035570A/en
Application granted granted Critical
Publication of JP7467281B2 publication Critical patent/JP7467281B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Hinges (AREA)

Description

本発明は、開いた扉が自動的に閉じ、又は閉じた扉が自動的に開くようにするヒンジに関する。 The present invention relates to a hinge that allows an open door to automatically close or a closed door to automatically open.

この種のヒンジとして扉がその自重により自動的に閉じ又は開くようにするグラビティヒンジが知られている（特許文献１参照）。グラビティヒンジは、枠等の扉支持体に取り付けられる下ヒンジ要素と、扉に取り付けられる上ヒンジ要素と、を備える。上ヒンジ要素は下ヒンジ要素に対して枢軸を中心に回転可能であり、上ヒンジ要素の端面と下ヒンジ要素の端面とが対面する。下ヒンジ要素の端面には、勾配が一定の傾斜面が形成される。上ヒンジ要素の端面にも、勾配が一定の傾斜面が形成される。これらの傾斜面は、例えば扉を開く際、上ヒンジ要素が下ヒンジ要素の傾斜面に沿ってせり上がり、逆に扉を閉める際、扉の自重によって上ヒンジ要素が下ヒンジ要素の傾斜面に沿って滑り落ちるように構成される。なお、扉の自重の代わりに、コイルばねのばね力を利用して扉が自動的に閉じ又は開くようにするばね式のヒンジも知られている（特許文献２参照）。 A gravity hinge, which allows the door to automatically close or open under its own weight, is known as this type of hinge (see Patent Document 1). The gravity hinge comprises a lower hinge element attached to a door support such as a frame, and an upper hinge element attached to the door. The upper hinge element can rotate about a pivot with respect to the lower hinge element, and the end face of the upper hinge element faces the end face of the lower hinge element. An inclined surface with a constant gradient is formed on the end face of the lower hinge element. An inclined surface with a constant gradient is also formed on the end face of the upper hinge element. These inclined surfaces are configured so that, for example, when the door is opened, the upper hinge element rises along the inclined surface of the lower hinge element, and conversely, when the door is closed, the upper hinge element slides down along the inclined surface of the lower hinge element due to the door's own weight. A spring-type hinge is also known that uses the spring force of a coil spring instead of the door's own weight to automatically close or open the door (see Patent Document 2).

特開２０００－１７９４０号公報JP 2000-17940 A 特開２００４－３００６９３号公報JP 2004-300693 A

しかし、従来のヒンジにおいては、下ヒンジ要素と上ヒンジ要素の端面に勾配が一定の傾斜面を形成するので、扉の閉じ位置又は開き位置において、閉じ方向又は開き方向の力を大きくすることができず、扉の閉じ位置又は開き位置を安定して保持することができないという問題がある。 However, in conventional hinges, the end faces of the lower hinge element and the upper hinge element form inclined surfaces with a constant gradient, so when the door is in the closed or open position, the force in the closing or opening direction cannot be increased, and the door cannot be stably held in the closed or open position.

この問題を解決するために、下ヒンジ要素と上ヒンジ要素それぞれに緩斜面と急斜面を形成し、扉の閉じ位置又は開き位置において、下ヒンジ要素と上ヒンジ要素の急斜面同士を接触させることが考えられる。 To solve this problem, it is possible to form a gentle slope and a steep slope on the lower hinge element and the upper hinge element, respectively, so that the steep slopes of the lower hinge element and the upper hinge element come into contact with each other when the door is in the closed or open position.

しかし、下ヒンジ要素と上ヒンジ要素それぞれに緩斜面と急斜面を形成すると、扉を閉じ位置又は開き位置から回転させる際、上ヒンジ要素と下ヒンジ要素とが１箇所で接触するようになり、ヒンジの耐久性が低下するという問題が発生する。 However, if a gentle slope and a steep slope are formed on the lower hinge element and the upper hinge element, respectively, the upper hinge element and the lower hinge element will come into contact at one point when the door is rotated from the closed or open position, causing a problem of reduced durability of the hinge.

本発明は、上記の課題に鑑みてなされたものであり、扉の閉じ位置又は開き位置を安定して保持することができると共に、耐久性を向上させることができるヒンジを提供することを目的とする。 The present invention was made in consideration of the above problems, and aims to provide a hinge that can stably hold the door in the closed or open position and can improve durability.

上記課題を解決するために、本発明は、下ヒンジ要素と、下ヒンジ要素に対して枢軸を中心に回転可能な上ヒンジ要素と、を備え、前記下ヒンジ要素の端面と前記上ヒンジ要素の端面とが対面するヒンジにおいて、前記下ヒンジ要素の前記端面には、凹部から凸部にかけて前記凹部の壁面を構成する第１急斜面と、前記第１急斜面に連続し、前記第１急斜面よりも勾配が緩やかな緩斜面と、前記緩斜面に連続し、前記緩斜面よりも勾配が急で前記凸部の壁面を構成する第２急斜面と、が形成され、前記上ヒンジ要素の前記端面には、凸部から凹部にかけて前記凸部の壁面を構成する第１急斜面と、前記第１急斜面に連続し、前記第１急斜面よりも勾配が緩やかな緩斜面と、前記緩斜面に連続し、前記緩斜面よりも勾配が急で前記凹部の壁面を構成する第２急斜面と、が形成され、初期位置において、前記上ヒンジ要素の前記凸部が前記下ヒンジ要素の前記凹部の前記第１急斜面に接触すると共に、前記下ヒンジ要素の前記凸部が前記上ヒンジ要素の前記凹部の前記第２急斜面に接触し、前記上ヒンジ要素が前記初期位置から回転する際、前記上ヒンジ要素の前記凸部が前記下ヒンジ要素の前記緩斜面に接触すると共に、前記下ヒンジ要素の前記凸部が前記上ヒンジ要素の前記緩斜面に接触するヒンジである。 In order to solve the above problem, the present invention provides a hinge comprising a lower hinge element and an upper hinge element rotatable about a pivot axis relative to the lower hinge element, in which an end face of the lower hinge element faces an end face of the upper hinge element, the end face of the lower hinge element is formed with a first steep slope constituting the wall surface of the recess from the recess to the protrusion, a gentle slope continuing to the first steep slope and having a gentler gradient than the first steep slope, and a second steep slope continuing to the gentle slope and having a steeper gradient than the gentle slope and constituting the wall surface of the protrusion, and the end face of the upper hinge element is formed with the first steep slope constituting the wall surface of the protrusion from the protrusion to the recess, and A gentle slope that is continuous with the steep slope and has a gradient gentler than the first steep slope, and a second steep slope that is continuous with the gentle slope and has a gradient steeper than the gentle slope and forms the wall surface of the recess are formed, and in the initial position, the convex portion of the upper hinge element contacts the first steep slope of the recess of the lower hinge element, and the convex portion of the lower hinge element contacts the second steep slope of the recess of the upper hinge element, and when the upper hinge element rotates from the initial position, the convex portion of the upper hinge element contacts the gentle slope of the lower hinge element, and the convex portion of the lower hinge element contacts the gentle slope of the upper hinge element.

本発明によれば、初期位置において、上ヒンジ要素の凸部が下ヒンジ要素の第１急斜面に接触すると共に、下ヒンジ要素の凸部が上ヒンジ要素の第２急斜面に接触するので、扉の閉じ位置又は開き位置を安定して保持することができる。また、上ヒンジ要素が初期位置から回転する際にも、上ヒンジ要素と下ヒンジ要素とが少なくとも２箇所で接触するので、ヒンジの耐久性を向上させることができる。 According to the present invention, in the initial position, the convex portion of the upper hinge element contacts the first steep slope of the lower hinge element, and the convex portion of the lower hinge element contacts the second steep slope of the upper hinge element, so that the door can be stably maintained in the closed or open position. In addition, even when the upper hinge element rotates from the initial position, the upper hinge element and the lower hinge element contact each other at at least two points, so that the durability of the hinge can be improved.

本発明の一実施形態のヒンジを扉と扉支持体に取り付けた例を示す正面図である。FIG. 2 is a front view showing an example in which a hinge according to an embodiment of the present invention is attached to a door and a door support; 本実施形態のヒンジの斜視図である。FIG. 2 is a perspective view of the hinge of the present embodiment. 本実施形態のヒンジの分解斜視図である。FIG. 2 is an exploded perspective view of the hinge of the present embodiment. 図３とは異なる方向から見た本実施形態のヒンジの分解斜視図である。FIG. 4 is an exploded perspective view of the hinge of the present embodiment, seen from a direction different from that of FIG. 3 . 本実施形態のヒンジの下取付け板と下ヒンジ要素の斜視図である。FIG. 2 is a perspective view of the lower mounting plate and lower hinge element of the hinge of this embodiment. 本実施形態のヒンジの上取付け板と上ヒンジ要素の斜視図である。FIG. 2 is a perspective view of the upper mounting plate and upper hinge element of the hinge of this embodiment. 本実施形態のヒンジの下ヒンジ要素の斜視図である。FIG. 2 is a perspective view of a lower hinge element of the hinge of this embodiment. 図８（ａ）は本実施形態のヒンジの下ヒンジ要素の正面図、図８（ｂ）は側面図である。FIG. 8(a) is a front view of the lower hinge element of the hinge of this embodiment, and FIG. 8(b) is a side view. 本実施形態のヒンジの上ヒンジ要素の斜視図である。FIG. 2 is a perspective view of an upper hinge element of the hinge of this embodiment. 図１０（ａ）は本実施形態のヒンジの上ヒンジ要素の正面図、図１０（ｂ）は側面図である。FIG. 10(a) is a front view of the upper hinge element of the hinge of this embodiment, and FIG. 10(b) is a side view. 扉の上面図である（図１１（ａ）は扉の閉じ位置を示し、図１１（ｂ）は扉の９０°開き位置を示し、図１１（ｃ）は扉の１４０°開き位置を示す）。11(a) shows the door in a closed position, FIG. 11(b) shows the door in a 90° open position, and FIG. 11(c) shows the door in a 140° open position. 本実施形態のヒンジの上ヒンジ要素及び下ヒンジ要素のカム展開図である（図１２（ａ）は上ヒンジ要素の初期位置を示し、図１２（ｂ－１）は上ヒンジ要素の凸部が下ヒンジ要素の緩斜面に接触する位置を示し、図１２（ｂ－２）は上ヒンジ要素の９０°回転位置を示し、図１２（ｃ）は上ヒンジ要素の１４０°回転位置を示す）。12A and 12B are cam development views of the upper and lower hinge elements of the hinge of this embodiment (FIG. 12A shows the initial position of the upper hinge element, FIG. 12B-1 shows the position where the convex portion of the upper hinge element contacts the gentle slope of the lower hinge element, FIG. 12B-2 shows the 90° rotated position of the upper hinge element, and FIG. 12C shows the 140° rotated position of the upper hinge element).

以下、添付図面に基づいて、本発明の実施形態のヒンジを詳細に説明する。ただし、本発明のヒンジは種々の形態で具体化することができ、本明細書に記載される実施形態に限定されるものではない。本実施形態は、明細書の開示を十分にすることによって、当業者が発明を十分に理解できるようにする意図をもって提供されるものである。 The hinge of the present invention will be described in detail below with reference to the accompanying drawings. However, the hinge of the present invention can be embodied in various forms and is not limited to the embodiments described in this specification. This embodiment is provided with the intention of enabling those skilled in the art to fully understand the invention by providing a sufficient disclosure of the specification.

図１は、本発明の一実施形態のヒンジ１を扉と扉支持体に取り付けた例を示す図である。２は扉、３は枠等の扉支持体である。本実施形態のヒンジ１は、開いた扉２がその自重により自動的に閉じるようにするグラビティヒンジである。ヒンジ１の個数は特に限定されるものではなく、例えば扉２の上下に２つ設けられる。ヒンジ１の用途も、特に限定されるものではなく、例えば浴室の扉、カウンター扉、トイレの扉等に適用することができる。 Figure 1 shows an example of a hinge 1 according to one embodiment of the present invention attached to a door and a door support. 2 is the door, and 3 is the door support such as a frame. The hinge 1 of this embodiment is a gravity hinge that automatically closes the open door 2 by its own weight. There is no particular limit to the number of hinges 1, and for example, two are provided, one above and one below the door 2. There is also no particular limit to the use of the hinge 1, and it can be applied to, for example, bathroom doors, counter doors, toilet doors, etc.

図２は組立てた状態のヒンジ１の斜視図を示す。ヒンジ１は、扉支持体３に取り付けられる下取付け板４と、扉２に取り付けられる上取付け板５と、を備える。下取付け板４は、板状の本体部４ａと、本体部４ａに一体に形成される筒部４ｂと、を備える。板状の本体部４ａには、扉支持体３に取り付けるためねじの通し穴４ａ１が形成される。筒部４ｂは、上端が開口し、下端が閉塞する。 Figure 2 shows a perspective view of the hinge 1 in an assembled state. The hinge 1 comprises a lower mounting plate 4 attached to the door support 3, and an upper mounting plate 5 attached to the door 2. The lower mounting plate 4 comprises a plate-shaped main body 4a and a tubular portion 4b formed integrally with the main body 4a. The plate-shaped main body 4a has a screw through hole 4a1 formed therein for mounting to the door support 3. The tubular portion 4b is open at the top and closed at the bottom.

上取付け板５は、板状の本体部５ａと、本体部５ａに一体に形成される筒部５ｂと、本体部５ａに取り付けられる扉固定部材５ｃと、を備える。板状の本体部５ａと扉固定部材５ｃとの間で図示しない扉２を挟む。筒部５ｂは、下端が開口し、上端が閉塞する。 The upper mounting plate 5 comprises a plate-shaped main body 5a, a tube 5b formed integrally with the main body 5a, and a door fixing member 5c attached to the main body 5a. The door 2 (not shown) is sandwiched between the plate-shaped main body 5a and the door fixing member 5c. The bottom end of the tube 5b is open and the top end is closed.

図３はヒンジ１の分解斜視図を示す。図４は図３とは異なる方向から見たヒンジ１の分解斜視図である。ヒンジ１は、下取付け板４、上取付け板５、枢軸８、下ヒンジ要素６、上ヒンジ要素７を組み合わせて構成される。 Figure 3 shows an exploded perspective view of the hinge 1. Figure 4 shows an exploded perspective view of the hinge 1 seen from a different direction than that of Figure 3. The hinge 1 is formed by combining a lower mounting plate 4, an upper mounting plate 5, a pivot 8, a lower hinge element 6, and an upper hinge element 7.

下取付け板４と上取付け板５の筒部４ｂ，５ｂには、軸方向に延びる穴９，１０が形成される。穴９は、開口側穴部９ａ、奥側穴部９ｂの２段に形成されていて、開口側穴部９ａの内径は奥側穴部９ｂの内径よりも大きい。穴１０も同様に、開口側穴部、奥側穴部の２段に形成されていて、開口側穴部の内径は奥側穴部の内径よりも大きい。 The cylindrical portions 4b, 5b of the lower mounting plate 4 and the upper mounting plate 5 have holes 9, 10 extending in the axial direction. The hole 9 is formed in two stages, an opening side hole portion 9a and a rear side hole portion 9b, and the inner diameter of the opening side hole portion 9a is larger than the inner diameter of the rear side hole portion 9b. Similarly, the hole 10 is formed in two stages, an opening side hole portion and a rear side hole portion, and the inner diameter of the opening side hole portion is larger than the inner diameter of the rear side hole portion.

下ヒンジ要素６と上ヒンジ要素７には、枢軸８が回転可能に軸方向に移動可能に嵌まる穴１１，１２（図５、図６参照）が形成される。上ヒンジ要素７は、下ヒンジ要素６に対して枢軸８を中心に回転可能であり、軸方向に移動可能である。 The lower hinge element 6 and the upper hinge element 7 are formed with holes 11, 12 (see Figures 5 and 6) into which the pivot 8 fits so as to be rotatable and axially movable. The upper hinge element 7 is rotatable about the pivot 8 relative to the lower hinge element 6 and is axially movable.

下ヒンジ要素６は、下取付け板４の筒部４ｂの穴９に嵌められる（図５参照）。下ヒンジ要素６は、下取付け板４の筒部４ｂの開口側穴部９ａに嵌まる大径軸部６ａと、下取付け板４の筒部４ｂの奥側穴部９ｂに嵌まる小径軸部６ｂと、を備える。下ヒンジ要素６の小径軸部６ｂには、軸方向に延びる複数の突条６ｃが形成される。下取付け板４の奥側穴部９ｂには、突条６ｃが入りこむ溝条が形成される。これにより、下ヒンジ要素６が下取付け板４に回転不可能に固定される。なお、下ヒンジ要素６と下取付け板４を一体に形成してもよい。 The lower hinge element 6 is fitted into the hole 9 of the tubular portion 4b of the lower mounting plate 4 (see FIG. 5). The lower hinge element 6 has a large diameter shaft portion 6a that fits into the opening side hole portion 9a of the tubular portion 4b of the lower mounting plate 4, and a small diameter shaft portion 6b that fits into the inner side hole portion 9b of the tubular portion 4b of the lower mounting plate 4. The small diameter shaft portion 6b of the lower hinge element 6 is formed with a plurality of axially extending protrusions 6c. The inner side hole portion 9b of the lower mounting plate 4 is formed with grooves into which the protrusions 6c fit. This fixes the lower hinge element 6 to the lower mounting plate 4 so that it cannot rotate. The lower hinge element 6 and the lower mounting plate 4 may be formed integrally.

上ヒンジ要素７は、上取付け板５の筒部５ｂの穴１０に嵌められる（図６参照）。上ヒンジ要素７は、上取付け板５の筒部５ｂの開口側穴部に嵌まる大径軸部７ａと、上取付け板５の筒部５ｂの奥側穴部に嵌まる小径軸部７ｂと、を備える。上ヒンジ要素７の小径軸部７ｂには、軸方向に延びる複数の突条７ｃが形成される。上取付け板５の奥側穴部には、突条７ｃが入りこむ溝条が形成される。これにより、上ヒンジ要素７が上取付け板５に回転不可能に固定される。なお、上ヒンジ要素７と上取付け板５を一体に形成してもよい。 The upper hinge element 7 is fitted into the hole 10 of the tubular portion 5b of the upper mounting plate 5 (see FIG. 6). The upper hinge element 7 has a large diameter shaft portion 7a that fits into the opening side hole of the tubular portion 5b of the upper mounting plate 5, and a small diameter shaft portion 7b that fits into the inner hole of the tubular portion 5b of the upper mounting plate 5. The small diameter shaft portion 7b of the upper hinge element 7 is formed with a plurality of axially extending protrusions 7c. The inner hole of the upper mounting plate 5 is formed with grooves into which the protrusions 7c fit. This fixes the upper hinge element 7 to the upper mounting plate 5 so that it cannot rotate. The upper hinge element 7 and the upper mounting plate 5 may be formed integrally.

図７は下ヒンジ要素６の斜視図を示す。図８（ａ）は下ヒンジ要素６の正面図、図８（ｂ）は側面図を示す。図７に示すように、下ヒンジ要素６の端面には、１８０°離れた位置に凹部２１と凸部２２が設けられる。下ヒンジ要素６の端面には、凹部２１から凸部２２にかけて凹部２１の壁面を構成する第１急斜面２３と、第１急斜面２３に連続する緩斜面２４と、緩斜面２４に連続し、凸部２２の壁面を構成する第２急斜面２５と、が形成される。緩斜面２４は、第１急斜面２３よりも勾配が緩やかである。第２急斜面２５は、緩斜面２４よりも勾配が急である。第２急斜面２５は、第１急斜面２３と同一の勾配である。２６はグリース溜まりである。 Figure 7 shows a perspective view of the lower hinge element 6. Figure 8(a) shows a front view of the lower hinge element 6, and Figure 8(b) shows a side view. As shown in Figure 7, a recess 21 and a protrusion 22 are provided at positions 180° apart on the end face of the lower hinge element 6. On the end face of the lower hinge element 6, a first steep slope 23 that constitutes the wall surface of the recess 21 from the recess 21 to the protrusion 22, a gentle slope 24 that continues from the first steep slope 23, and a second steep slope 25 that continues from the gentle slope 24 and constitutes the wall surface of the protrusion 22 are formed. The gentle slope 24 has a gentler slope than the first steep slope 23. The second steep slope 25 has a steeper slope than the gentle slope 24. The second steep slope 25 has the same slope as the first steep slope 23. 26 is a grease reservoir.

第１急斜面２３、緩斜面２４、第２急斜面２５は、凹部２１の両側に形成される。図８（ａ）の正面視において、第１急斜面２３、緩斜面２４、第２急斜面２５は左右対称に形成される。凹部２１には、第１急斜面２３の間に水平な底面２１ａが設けられる。水平な底面２１ａを設けることで、凹部２１の底面２１ａにおける大径軸部６ａの厚さを確保することができる。 The first steep slope 23, the gentle slope 24, and the second steep slope 25 are formed on both sides of the recess 21. In the front view of FIG. 8(a), the first steep slope 23, the gentle slope 24, and the second steep slope 25 are formed symmetrically. The recess 21 has a horizontal bottom surface 21a between the first steep slopes 23. By providing the horizontal bottom surface 21a, the thickness of the large diameter shaft portion 6a at the bottom surface 21a of the recess 21 can be ensured.

第１急斜面２３、緩斜面２４、第２急斜面２５は、螺旋状の傾斜面に形成される。螺旋状の傾斜面とは、枢軸８を中心とした円周方向の移動量と軸方向の移動量が比例する傾斜面であり、図１２に示す下ヒンジ要素６の展開図において、勾配が直線状の傾斜面である。また、傾斜面の円周方向の任意位置における半径方向線が枢軸８の中心と直交する傾斜面である。 The first steep slope 23, the gentle slope 24, and the second steep slope 25 are formed on a spiral inclined surface. A spiral inclined surface is an inclined surface in which the amount of circumferential movement around the pivot 8 is proportional to the amount of axial movement, and is an inclined surface with a linear gradient in the development view of the lower hinge element 6 shown in FIG. 12. In addition, it is an inclined surface in which a radial line at any position in the circumferential direction of the inclined surface is perpendicular to the center of the pivot 8.

図９は上ヒンジ要素７の斜視図を示す。図１０（ａ）は上ヒンジ要素７の正面図、図１０（ｂ）は側面図を示す。上ヒンジ要素７の端面には、１８０°離れた位置に凸部３１と凹部３２（図１０（ａ）参照）とが設けられる。上ヒンジ要素７の端面には、凸部３１から凹部３２にかけて凸部３１の壁面を構成する第１急斜面３３と、第１急斜面３３に連続する緩斜面３４と、緩斜面３４に連続し、凹部３２の壁面を構成する第２急斜面３５と、が形成される。緩斜面３４は、第１急斜面３３よりも勾配が緩やかである。第２急斜面３５は、緩斜面３４よりも勾配が急である。第２急斜面３５は、第１急斜面３３と同一の勾配である。３６はグリース溜まりである。 Figure 9 shows a perspective view of the upper hinge element 7. Figure 10(a) shows a front view of the upper hinge element 7, and Figure 10(b) shows a side view. A convex portion 31 and a concave portion 32 (see Figure 10(a)) are provided at positions 180° apart on the end face of the upper hinge element 7. On the end face of the upper hinge element 7, a first steep slope 33 that constitutes the wall surface of the convex portion 31 from the convex portion 31 to the concave portion 32, a gentle slope 34 that continues from the first steep slope 33, and a second steep slope 35 that continues from the gentle slope 34 and constitutes the wall surface of the concave portion 32 are formed. The gentle slope 34 has a gentler slope than the first steep slope 33. The second steep slope 35 has a steeper slope than the gentle slope 34. The second steep slope 35 has the same slope as the first steep slope 33. 36 is a grease reservoir.

第１急斜面３３、緩斜面３４、第２急斜面３５は、螺旋状の傾斜面に形成される。螺旋状の傾斜面とは、上述のとおりである。第１急斜面３３、緩斜面３４、第２急斜面３５は、凸部３１の両側に形成される。図１０（ａ）の正面視において、第１急斜面３３、緩斜面３４、第２急斜面３５は左右対称に形成される。凹部３２には、第２急斜面３５の間に水平な底面３２ａが形成される。上ヒンジ要素７の端面は、下ヒンジ要素６の端面と同一形状である。 The first steep slope 33, the gentle slope 34, and the second steep slope 35 are formed on a spiral inclined surface. The spiral inclined surface is as described above. The first steep slope 33, the gentle slope 34, and the second steep slope 35 are formed on both sides of the convex portion 31. In the front view of FIG. 10(a), the first steep slope 33, the gentle slope 34, and the second steep slope 35 are formed symmetrically. In the concave portion 32, a horizontal bottom surface 32a is formed between the second steep slopes 35. The end surface of the upper hinge element 7 has the same shape as the end surface of the lower hinge element 6.

図３に示す扉固定部材５ｃは、ガラス製の扉２を板状の本体部５ａに固定するための部材である。扉固定部材５ｃは、扉２の正面と裏面にあてがわれる２枚の板状パッキン４１，４２と、扉２に設けた貫通穴に内嵌すると共に本体部５ａのねじ筒部５ａ１（図４参照）に外嵌する筒状パッキン４３と、本体部５ａと扉２を挟んで反対側に配置される挟持片４４と、本体部５ａのねじ筒部５ａ１に螺合し、本体部５ａと挟持片４４との間で扉２を挟むようにするねじ４５と、挟持片４４に着脱可能に係合し、ねじ４５を覆うカバー４６と、を備える。なお、扉２はガラス製に限られることはなく、木製又は金属製等でもよい。扉２が木製又は金属製の場合、板状の本体部５ａにねじの通し穴を形成し、ねじによって扉２を本体部５ａに取り付けるようにしてもよい。 The door fixing member 5c shown in FIG. 3 is a member for fixing the glass door 2 to the plate-shaped main body 5a. The door fixing member 5c includes two plate-shaped packings 41 and 42 that are applied to the front and back sides of the door 2, a cylindrical packing 43 that fits inside a through hole provided in the door 2 and fits outside the screw tube portion 5a1 (see FIG. 4) of the main body 5a, a clamping piece 44 that is arranged on the opposite side of the main body 5a and the door 2, a screw 45 that screws into the screw tube portion 5a1 of the main body 5a to clamp the door 2 between the main body 5a and the clamping piece 44, and a cover 46 that detachably engages with the clamping piece 44 and covers the screw 45. The door 2 is not limited to being made of glass, and may be made of wood or metal. When the door 2 is made of wood or metal, a screw through hole may be formed in the plate-shaped main body 5a, and the door 2 may be attached to the main body 5a by the screw.

図１１及び図１２を参照して、本実施形態のヒンジ１の動作を説明する。図１１は扉２の上面図を示す。図１１（ａ）は扉２の閉じ位置、図１１（ｂ）は扉２の９０°開き位置、図１１（ｃ）は扉２の１４０°開き位置を示す。図１１（ａ）に示す扉２の閉じ位置は、扉２を図示しないストッパに当接させることで保持される。 The operation of the hinge 1 of this embodiment will be described with reference to Figures 11 and 12. Figure 11 shows a top view of the door 2. Figure 11(a) shows the closed position of the door 2, Figure 11(b) shows the 90° open position of the door 2, and Figure 11(c) shows the 140° open position of the door 2. The closed position of the door 2 shown in Figure 11(a) is maintained by abutting the door 2 against a stopper (not shown).

図１２は下ヒンジ要素６と上ヒンジ要素７の展開図を示す。２１は下ヒンジ要素６の凹部、２２は下ヒンジ要素６の凸部である。３１は上ヒンジ要素７の凸部、３２は上ヒンジ要素７の凹部である。 Figure 12 shows an exploded view of the lower hinge element 6 and the upper hinge element 7. 21 is the recess of the lower hinge element 6, and 22 is the protrusion of the lower hinge element 6. 31 is the protrusion of the upper hinge element 7, and 32 is the recess of the upper hinge element 7.

図１２（ａ）は初期位置、すなわち扉２の閉じ位置を示し、図１１（ａ）に対応する。図１２（ａ）に示すように、初期位置において、上ヒンジ要素７の凸部３１の第１急斜面３３が下ヒンジ要素６の凹部２１の第１急斜面２３に面接触すると共に、下ヒンジ要素６の凸部２２の第２急斜面２５が上ヒンジ要素７の凹部３２の第２急斜面３５に面接触する。第１急斜面２３，３３同士及び第２急斜面２５，３５同士を面接触させることで、閉じ位置にある扉２に閉じ方向の大きな力を働かせることができ、扉２の閉じ位置を安定して保持することができる。また、使用者が扉２の収まり具合を調整するため図示しないストッパの初期位置をマイナス方向にずらしても、上ヒンジ要素７の凸部３１と下ヒンジ要素６の凸部２２が第１急斜面２３，３３に接するので、扉２の閉じ位置を安定して保持することができる。 Figure 12(a) shows the initial position, i.e., the closed position of the door 2, and corresponds to Figure 11(a). As shown in Figure 12(a), in the initial position, the first steep slope 33 of the convex portion 31 of the upper hinge element 7 is in surface contact with the first steep slope 23 of the concave portion 21 of the lower hinge element 6, and the second steep slope 25 of the convex portion 22 of the lower hinge element 6 is in surface contact with the second steep slope 35 of the concave portion 32 of the upper hinge element 7. By bringing the first steep slopes 23, 33 into surface contact with each other and the second steep slopes 25, 35 into surface contact with each other, a large force in the closing direction can be applied to the door 2 in the closed position, and the closed position of the door 2 can be stably maintained. In addition, even if the user shifts the initial position of the stopper (not shown) in the negative direction to adjust the fit of the door 2, the protrusion 31 of the upper hinge element 7 and the protrusion 22 of the lower hinge element 6 come into contact with the first steep slopes 23, 33, so the closed position of the door 2 can be stably maintained.

図１２（ｂ－１）に示すように、上ヒンジ要素７を初期位置から開き方向に回転させると、上ヒンジ要素７の凸部３１が下ヒンジ要素６の第１急斜面２３を乗り越えて、緩斜面２４に接触する。これと同時に、下ヒンジ要素６の凸部２２が上ヒンジ要素７の緩斜面３４に接触する。こうすることで、人が扉２を開く力が小さくて済む。 As shown in FIG. 12(b-1), when the upper hinge element 7 is rotated in the opening direction from the initial position, the convex portion 31 of the upper hinge element 7 climbs over the first steep slope 23 of the lower hinge element 6 and comes into contact with the gentle slope 24. At the same time, the convex portion 22 of the lower hinge element 6 comes into contact with the gentle slope 34 of the upper hinge element 7. This allows a person to open the door 2 with less force.

図１２（ｂ－２）は上ヒンジ要素７を初期位置から開き方向に９０°回転させた状態を示し、扉２が９０°開いた図１１（ｂ）に対応する。上ヒンジ要素７を初期位置から開き方向に９０°回転させた状態でも、上ヒンジ要素７の凸部３１が下ヒンジ要素６の緩斜面２４に接触すると共に、下ヒンジ要素６の凸部２２が上ヒンジ要素７の緩斜面３４に接触する。 Figure 12 (b-2) shows the state where the upper hinge element 7 has been rotated 90° in the opening direction from the initial position, and corresponds to Figure 11 (b) where the door 2 is opened 90°. Even when the upper hinge element 7 has been rotated 90° in the opening direction from the initial position, the convex portion 31 of the upper hinge element 7 contacts the gentle slope 24 of the lower hinge element 6, and the convex portion 22 of the lower hinge element 6 contacts the gentle slope 34 of the upper hinge element 7.

図１２（ｃ）は上ヒンジ要素７を初期位置から開き方向に１４０°回転させた状態を示し、扉２が１４０°開いた図１１（ｃ）に対応する。図１１（ｃ）の扉２の１４０°開き位置は、扉２が図示しないストッパに当接することにより定められる。 Figure 12(c) shows the state in which the upper hinge element 7 has been rotated 140° in the opening direction from the initial position, and corresponds to Figure 11(c) in which the door 2 is opened 140°. The 140° open position of the door 2 in Figure 11(c) is determined by the door 2 abutting against a stopper (not shown).

図１２（ｃ）に示すように、上ヒンジ要素７をさらに回転させると、上ヒンジ要素７の凸部３１の第１急斜面３３が下ヒンジ要素６の凸部２２の第２急斜面２５に面接触する。第１急斜面３３と第２急斜面２５を面接触させることで、１４０°開いた位置にある扉２に閉じ方向の大きな力を働かせることができる。 As shown in FIG. 12(c), when the upper hinge element 7 is further rotated, the first steep slope 33 of the convex portion 31 of the upper hinge element 7 comes into surface contact with the second steep slope 25 of the convex portion 22 of the lower hinge element 6. By bringing the first steep slope 33 and the second steep slope 25 into surface contact, a large force in the closing direction can be applied to the door 2, which is in the 140° open position.

以下に本実施形態のヒンジ１の効果を説明する。 The effects of the hinge 1 of this embodiment are explained below.

初期位置において、上ヒンジ要素７の凸部３１が下ヒンジ要素６の凹部２１の第１急斜面２３に接触すると共に、下ヒンジ要素６の凸部２２が上ヒンジ要素７の第２急斜面３５に接触するので、扉２の閉じ位置を安定して保持することができる。また、上ヒンジ要素７が初期位置から回転する際にも、上ヒンジ要素７と下ヒンジ要素６とが２箇所で接触するので、ヒンジの耐久性を向上させることができる。 In the initial position, the convex portion 31 of the upper hinge element 7 contacts the first steep slope 23 of the concave portion 21 of the lower hinge element 6, and the convex portion 22 of the lower hinge element 6 contacts the second steep slope 35 of the upper hinge element 7, so that the closed position of the door 2 can be stably maintained. In addition, even when the upper hinge element 7 rotates from the initial position, the upper hinge element 7 and the lower hinge element 6 contact each other at two points, so that the durability of the hinge can be improved.

初期位置において、上ヒンジ要素７の凸部３１の第１急斜面３３が下ヒンジ要素６の凹部２１の第１急斜面２３に面接触すると共に、下ヒンジ要素６の凸部２２の第２急斜面２５が上ヒンジ要素７の凹部３２の第２急斜面３５に面接触するので、ヒンジ１の耐久性をより向上させることができる。 In the initial position, the first steep slope 33 of the convex portion 31 of the upper hinge element 7 is in surface contact with the first steep slope 23 of the concave portion 21 of the lower hinge element 6, and the second steep slope 25 of the convex portion 22 of the lower hinge element 6 is in surface contact with the second steep slope 35 of the concave portion 32 of the upper hinge element 7, thereby further improving the durability of the hinge 1.

上ヒンジ要素７がさらに回転する際、上ヒンジ要素７の凸部３１の第１急斜面３３が下ヒンジ要素６の凸部２２の第２急斜面２５に面接触するので、開いた位置にある扉２に閉じ方向の大きな力を働かせることができると共に、ヒンジ１の耐久性を向上させることができる。 When the upper hinge element 7 rotates further, the first steep slope 33 of the convex portion 31 of the upper hinge element 7 comes into surface contact with the second steep slope 25 of the convex portion 22 of the lower hinge element 6, so that a large force in the closing direction can be applied to the door 2 in the open position, and the durability of the hinge 1 can be improved.

下ヒンジ要素６の凹部２１と凸部２２を１８０°離れた位置に設け、上ヒンジ要素７の凸部３１と凹部３２を１８０°離れた位置に設けるので、扉２の開き角度を大きくすることができる。 The recess 21 and protrusion 22 of the lower hinge element 6 are positioned 180° apart, and the protrusion 31 and recess 32 of the upper hinge element 7 are positioned 180° apart, allowing the door 2 to open at a larger angle.

下ヒンジ要素６の凹部２１の両側に一対の第１急斜面２３、一対の緩斜面２４、一対の第２急斜面２５を設け、上ヒンジ要素７の凸部３１の両側に一対の第１急斜面３３、一対の緩斜面３４、一対の第２急斜面３５を設けるので、閉じ位置から時計方向に回転する扉２にも反時計方向に回転する扉２にも本実施形態のヒンジ１を適用することができる。 A pair of first steep slopes 23, a pair of gentle slopes 24, and a pair of second steep slopes 25 are provided on both sides of the recess 21 of the lower hinge element 6, and a pair of first steep slopes 33, a pair of gentle slopes 34, and a pair of second steep slopes 35 are provided on both sides of the protrusion 31 of the upper hinge element 7, so that the hinge 1 of this embodiment can be applied to both a door 2 that rotates clockwise from the closed position and a door 2 that rotates counterclockwise.

なお、本発明は上記実施形態に具現化されるのに限られることはなく、本発明の要旨を変更しない範囲で他の実施形態に具現化できる。 The present invention is not limited to the above embodiment, and may be embodied in other embodiments without departing from the spirit of the present invention.

上記実施形態では、初期位置において、上ヒンジ要素の凸部の第１急斜面と下ヒンジ要素の凹部の第１急斜面とが面接触し、下ヒンジ要素の凸部が上ヒンジ要素の凹部の第２急斜面に面接触しているが、これらが点接触してもよい。 In the above embodiment, in the initial position, the first steep slope of the convex portion of the upper hinge element and the first steep slope of the concave portion of the lower hinge element are in surface contact, and the convex portion of the lower hinge element is in surface contact with the second steep slope of the concave portion of the upper hinge element, but these may also be in point contact.

上記実施形態では、下ヒンジ要素と上ヒンジ要素の展開図において、下ヒンジ要素と上ヒンジ要素の傾斜面を直線状に形成しているが、曲線状に形成してもよい。また、扉を一時的に停止させるために下ヒンジ要素及び／又は上ヒンジ要素の緩斜面の途中に切欠きを設けてもよい。 In the above embodiment, in the development view of the lower hinge element and the upper hinge element, the inclined surfaces of the lower hinge element and the upper hinge element are formed in a straight line, but they may be formed in a curved line. Also, a notch may be provided in the middle of the gentle slope of the lower hinge element and/or the upper hinge element to temporarily stop the door.

上記実施形態では、上ヒンジ要素と下ヒンジ要素それぞれの端面に１８０°離れた位置に１つの凸部と１つの凹部を設けているが、上ヒンジ要素と下ヒンジ要素それぞれの端面に９０°離れた位置に凸部と凹部を設け、合計で２つの凸部と２つの凹部を設けてもよい。 In the above embodiment, one convex portion and one concave portion are provided at positions 180° apart on the end face of each of the upper hinge element and the lower hinge element, but a convex portion and a concave portion may be provided at positions 90° apart on each of the end faces of each of the upper hinge element and the lower hinge element, for a total of two convex portions and two concave portions.

上記実施形態では、グラビティヒンジの例を説明したが、本発明はばね式のヒンジ（扉の自重の代わりにコイルばねのばね力を利用して扉が自動的に閉じ又は開くようにするヒンジ）にも適用することができる。 In the above embodiment, an example of a gravity hinge has been described, but the present invention can also be applied to a spring-type hinge (a hinge that uses the spring force of a coil spring instead of the door's own weight to automatically close or open the door).

１…ヒンジ
２…扉
３…扉支持体
６…下ヒンジ要素
７…上ヒンジ要素
８…枢軸
２１…下ヒンジ要素の凹部
２２…下ヒンジ要素の凸部
２３…第１急斜面
２４…緩斜面
２５…第２急斜面
３１…上ヒンジ要素の凸部
３２…上ヒンジ要素の凹部
３３…第１急斜面
３４…緩斜面
３５…第２急斜面 REFERENCE SIGNS LIST 1 hinge 2 door 3 door support 6 lower hinge element 7 upper hinge element 8 pivot 21 concave portion of lower hinge element 22 convex portion of lower hinge element 23 first steep slope 24 gentle slope 25 second steep slope 31 convex portion of upper hinge element 32 concave portion of upper hinge element 33 first steep slope 34 gentle slope 35 second steep slope

Claims (5)

下ヒンジ要素と、下ヒンジ要素に対して枢軸を中心に回転可能な上ヒンジ要素と、を備え、前記下ヒンジ要素の端面と前記上ヒンジ要素の端面とが対面するヒンジにおいて、
前記下ヒンジ要素の前記端面には、凹部から凸部にかけて前記凹部の壁面を構成する第１急斜面と、前記第１急斜面に連続し、前記第１急斜面よりも勾配が緩やかな緩斜面と、前記緩斜面に連続し、前記緩斜面よりも勾配が急で前記凸部の壁面を構成する第２急斜面と、が形成され、
前記上ヒンジ要素の前記端面には、凸部から凹部にかけて前記凸部の壁面を構成する第１急斜面と、前記第１急斜面に連続し、前記第１急斜面よりも勾配が緩やかな緩斜面と、前記緩斜面に連続し、前記緩斜面よりも勾配が急で前記凹部の壁面を構成する第２急斜面と、が形成され、
初期位置において、前記上ヒンジ要素の前記凸部が前記下ヒンジ要素の前記凹部の前記第１急斜面に接触すると共に、前記下ヒンジ要素の前記凸部が前記上ヒンジ要素の前記凹部の前記第２急斜面に接触し、
前記上ヒンジ要素が前記初期位置から回転する際、前記上ヒンジ要素の前記凸部が前記下ヒンジ要素の前記緩斜面に接触すると共に、前記下ヒンジ要素の前記凸部が前記上ヒンジ要素の前記緩斜面に接触するヒンジ。 A hinge comprising a lower hinge element and an upper hinge element rotatable about a pivot axis relative to the lower hinge element, wherein an end face of the lower hinge element faces an end face of the upper hinge element,
The end surface of the lower hinge element is formed with a first steep slope that constitutes a wall surface of the recess from the recess to the protrusion, a gentle slope that is continuous with the first steep slope and has a gentler gradient than the first steep slope, and a second steep slope that is continuous with the gentle slope and has a steeper gradient than the gentle slope and constitutes a wall surface of the protrusion,
The end surface of the upper hinge element is formed with a first steep slope that constitutes a wall surface of the convex portion from the convex portion to the concave portion, a gentle slope that is continuous with the first steep slope and has a gentler gradient than the first steep slope, and a second steep slope that is continuous with the gentle slope and has a steeper gradient than the gentle slope and constitutes a wall surface of the concave portion,
In an initial position, the convex portion of the upper hinge element contacts the first steep slope of the recessed portion of the lower hinge element, and the convex portion of the lower hinge element contacts the second steep slope of the recessed portion of the upper hinge element,
A hinge in which, when the upper hinge element rotates from the initial position, the convex portion of the upper hinge element contacts the gentle slope of the lower hinge element and the convex portion of the lower hinge element contacts the gentle slope of the upper hinge element. 前記初期位置において、前記上ヒンジ要素の前記凸部の前記第１急斜面が前記下ヒンジ要素の前記凹部の前記第１急斜面に面接触すると共に、前記下ヒンジ要素の前記凸部の前記第２急斜面が前記上ヒンジ要素の前記凹部の前記第２急斜面に面接触することを特徴とする請求項１に記載のヒンジ。 The hinge of claim 1, characterized in that, in the initial position, the first steep slope of the convex portion of the upper hinge element is in surface contact with the first steep slope of the concave portion of the lower hinge element, and the second steep slope of the convex portion of the lower hinge element is in surface contact with the second steep slope of the concave portion of the upper hinge element. 前記上ヒンジ要素がさらに回転する際、前記上ヒンジ要素の前記凸部の前記第１急斜面が前記下ヒンジ要素の前記凸部の前記第２急斜面に面接触することを特徴とする請求項１又は２に記載のヒンジ。 The hinge according to claim 1 or 2, characterized in that when the upper hinge element further rotates, the first steep slope of the convex portion of the upper hinge element comes into surface contact with the second steep slope of the convex portion of the lower hinge element. 前記下ヒンジ要素の前記凹部と前記凸部を１８０°離れた位置に設け、
前記上ヒンジ要素の前記凸部と前記凹部を１８０°離れた位置に設けることを特徴とする請求項１ないし３のいずれか一項に記載のヒンジ。 The recess and the protrusion of the lower hinge element are provided at positions spaced apart by 180°;
4. The hinge according to claim 1, wherein the protrusion and the recess of the upper hinge element are provided at positions spaced apart by 180 degrees. 前記下ヒンジ要素の前記凹部の両側に一対の前記第１急斜面、一対の前記緩斜面、一対の前記第２急斜面を設け、
前記上ヒンジ要素の前記凸部の両側に一対の前記第１急斜面、一対の前記緩斜面、一対の前記第２急斜面を設けることを特徴とする請求項４に記載のヒンジ。 a pair of the first steep slopes, a pair of the gentle slopes, and a pair of the second steep slopes are provided on both sides of the recess of the lower hinge element;
The hinge according to claim 4 , wherein a pair of the first steep slopes, a pair of the gentle slopes, and a pair of the second steep slopes are provided on both sides of the protruding portion of the upper hinge element.
JP2020139999A 2020-08-21 2020-08-21 Hinge Active JP7467281B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020139999A JP7467281B2 (en) 2020-08-21 2020-08-21 Hinge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020139999A JP7467281B2 (en) 2020-08-21 2020-08-21 Hinge

Publications (2)

Publication Number Publication Date
JP2022035570A JP2022035570A (en) 2022-03-04
JP7467281B2 true JP7467281B2 (en) 2024-04-15

Family

ID=80443509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020139999A Active JP7467281B2 (en) 2020-08-21 2020-08-21 Hinge

Country Status (1)

Country Link
JP (1) JP7467281B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138743A (en) 1991-06-21 1992-08-18 White Consolidated Industries, Inc. Refrigerator door closing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138743A (en) 1991-06-21 1992-08-18 White Consolidated Industries, Inc. Refrigerator door closing device

Also Published As

Publication number Publication date
JP2022035570A (en) 2022-03-04

Similar Documents

Publication Publication Date Title
KR100225747B1 (en) Door positioning hinge
TWI386543B (en) Furniture hinge
JP6449906B2 (en) Hinge for rotating movement of doors and door plates
US10920474B2 (en) Hinge device
US11072958B2 (en) Damper hinge and western-style toilet using the same
JP5236014B2 (en) Tilt hinge
WO1995020211A1 (en) Keyboard lid opening and closing device using oil damper
JP2006336194A (en) Hinge device
JP7467281B2 (en) Hinge
JP6567353B2 (en) Rotating handle
KR102096316B1 (en) Hinge and Furniture comprising the same
WO2020137570A1 (en) Damper device
JP2524717B2 (en) Opening / closing device for toilet lids of Western style toilets
JPH07233670A (en) Damper built-in hinge
US7012675B1 (en) Knuckle arm
US20020083555A1 (en) Damper hinge
JP2010248800A (en) Stay for cabinet, and cabinet using the same
JP2020023996A (en) Damper hinge
WO2024116760A1 (en) Hinge device
JP4175684B2 (en) Rotation support mechanism
JP5886942B2 (en) Opening holding device and door hinge device having the same
JP6567870B2 (en) Opening / closing resistance application device for sliding doors
JPH0249749Y2 (en)
JP3652441B2 (en) cap
KR102292335B1 (en) Rotary oil damper

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230802

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20240327

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: 20240402

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240403

R150 Certificate of patent or registration of utility model

Ref document number: 7467281

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150