JP4319282B2

JP4319282B2 - Back plate fixture in picture frame

Info

Publication number: JP4319282B2
Application number: JP06956799A
Authority: JP
Inventors: 寛明安田
Original assignee: 安田精工株式会社
Priority date: 1999-03-16
Filing date: 1999-03-16
Publication date: 2009-08-26
Anticipated expiration: 2019-03-16
Also published as: JP2000262370A

Description

【０００１】
【発明の属する技術分野】
本発明は、額縁におけるキャンバス、裏板等（本明細書において、単に「裏板」という。）の固定具に関するものである。
【０００２】
【従来の技術】
額縁は、額縁枠内に、表側に透明なガラス板を、中間に写真等の作品を、裏側に裏板を順次重ねるように配置し、額縁枠に旋回可能に装着した止片により裏板を固定するようにしている。
上記止片は額縁枠の裏側の面に、この裏側の面に沿って旋回するように一方の端部が軸着されており、他方の端部が額縁枠内に突出するように旋回させた状態で、裏板をガラス板や作品とともに押さえて固定する構造を有している。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記従来の額縁の裏板の固定具においては、止片が額縁枠の裏側の面に沿って旋回する構成であるため、額縁枠内に配置されるガラス板や作品、及び裏板の合計の厚さが、額縁枠の有効厚さよりも小さい場合には、止片によって裏板を十分に固定することができず、中間に配置した写真や賞状等が振動等により移動してしまうという問題点があった。
【０００４】
本発明は、上記従来の額縁における裏板の固定具の有する問題点に鑑み、額縁枠への装着及び操作を簡単に行えるとともに、作品の厚みにかかわらず裏板を確実に固定することができる額縁における裏板の固定具を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するため、本発明の額縁における裏板の固定具は、裏板を固定するために額縁枠の裏側に形成した溝に装着する裏板の固定具において、額縁枠の内周面に沿う係止片と、該係止片と直交する天板部を有し、該天板部が前記溝に摺動可能に装着されるとともに、互いに引き合う方向に付勢された一対の固定具本体と、前記各係止片と額縁枠との間で支持される支持片を有し、各係止片の間にその縁部が挟持され、前記裏板を裏側から押さえる押さえ片とを備え、前記各係止片の挟持側縁部を鋸歯状に形成して押さえ片の縁部を係止可能としたことを特徴とする。
【０００６】
本発明の裏板の固定具は、押さえ片を額縁枠の内周面に沿うように摺動させ、固定具本体の係止片で挟むことによって固定できることから、係止片の長さの範囲内において押さえ片を自由に位置決めすることができ、これにより作品の厚みにかかわらず裏板を押さえて、簡単かつ確実に固定することができる。
【０００７】
この場合において、各係止片の挟持側縁部の鋸歯を、押さえ片を額縁枠の表方向には進行させる、係合片の中心線に対して１０〜３０°の角度を有する進行部と、逆方向には止める、これとは逆方向の８０〜６０°の角度を有する係止部とを有するように形成することも可能であり、これにより、押さえ片を押し込むだけで裏板を固定することができる。
【０００８】
また、各係止片の挟持側縁部をそれぞれ額縁枠の表方向に行くに従い漸次間隔が拡がるテーパ状に形成することも可能であり、これにより、上記押さえ片の押し込みを楽に行えるとともに、各係止片と押さえ片の係止状態を浅くした場合でも押さえ片の逆戻りを防ぐことが可能となる。
【０００９】
また、少なくとも一方の固定具本体に、該固定具本体を額縁枠に固定する固定手段を設け、固定具全体の額縁枠に対する位置固定を図ることが可能である。
【００１０】
さらに、前記支持片を、押さえ片の縁部付近から額縁枠の表方向に、先端が狭まるテーパを付して延出するとともに、前記一対の固定具本体の間に、各固定具本体が引き合って最も接近した状態で、前記支持片の先端部より幅広となる支持片挿入部を形成することもでき、これにより、支持片を支持片挿入部に挿入すると、支持片のテーパが支持片挿入部に係合し固定具本体の間隔を付勢力に抗して押し広げ、押さえ片の縁部が固定具本体の係止片に近づいた段階でこの係合を解くことから、支持片を押し込むだけで押さえ片の縁部を上記係止片に自動的に係止させることが可能となる。
【００１１】
【発明の実施の形態】
以下、本発明の額縁における裏板の固定具の実施の形態を図面に基づいて説明する。
【００１２】
図１〜図５に、本発明の額縁における裏板の固定具の一実施例を示す。
この額縁における裏板の固定具は、額縁の裏板４を固定するために額縁枠３の裏側に形成した溝３０に装着して使用するもので、一対の固定具本体１と、裏板４を押圧するための押さえ片２とから構成されている。
【００１３】
固定具本体１は、額縁枠３の内周面３３に沿う係止片５と、この係止片５と直交する天板部７を有し、この天板部７が溝３０に摺動可能に装着されるとともに、ばね部材６によって互いに引き合う方向に付勢された一対のものからなり、また押さえ片２は、各固定具本体１の係止片５の間にその縁部２ａが挟持され、裏板４を裏側から押さえるようになっている。
【００１４】
額縁枠３の溝３０は、溝の各側壁から内側に張り出したレール部３１を有しており、固定具本体１は、このレール部３１の上方に位置する天板部７と、この天板部７の両端からそれぞれ延出してレール部３１の下方に位置する４本の爪部材８とを備えている。すなわち、固定具本体１は、これら天板部７と爪部材８とでレール部３１を挟むことにより、レール部３１に対し摺動可能に装着されている。
【００１５】
また、天板部７にはねじ孔が貫設されており、このねじ孔には固定手段としてビス９が螺合されている。このビス９を締め込んで溝３０の底部３２に当接させることにより、少なくとも一方の固定具本体１を固定することができる。なお、このビス９には、２つの固定具本体１に亙って前記ばね部材６が架設されている。
【００１６】
一方、固定具本体１の係止片５は、各挟持側縁部５ａが、押さえ片２の縁部が係止する鋸歯状に形成されている。この挟持側縁部５ａの鋸歯は、押さえ片２を額縁枠の表方向（押し込み方向）Ａには進行させ、かつこの表方向Ａと逆方向には止める形状として、図３に示すように、係合片５の中心線Ｌに対して、略１０〜３０°の角度θ _１を有する部分である進行部５ａ _１と、これとは逆方向の略８０〜６０°の角度θ _２を有する部分である係止部５ａ _２とを有するように形成されている。
また、各係止片５は、挟持側縁部５ａがそれぞれ額縁枠３の表方向Ａに行くに従い漸次間隔が拡がるテーパ状に形成されている。この係止片５を含めた固定具本体１の形状は、一対の固定具本体１を共用できるように、図示のように左右対称に形成されている。
【００１７】
この係止片５の挟持側縁部５ａは、押さえ片２側に若干張り出すように形成されており、この挟持側縁部５ａは、押さえ片２の支持片１１を額縁枠３の内周面３３とで挟むことにより、支持片１１を摺動可能に支持するようになっている。
【００１８】
他方、押さえ片２は、裏板４の裏側の面に添着される平板状の押さえ片本体１０と、この押さえ片本体１０の基部から額縁枠３の内周面３３に沿って略直角に延出された平板状の支持片１１とからなる。
押さえ片２には、裏板４に対する固定用ビス孔１２と掛止用爪部１３とが設けられている。
【００１９】
支持片１１は、押さえ片２の縁部２ａ付近から額縁枠３の表方向Ａに、先端部１１ａが狭まるテーパを付して延出されている。
これに対し、２つの固定具本体１の間には、図３及び図４に示すように、各固定具本体１がばね部材６により引き合って最も接近した状態で、支持片１１の先端部１１ａの幅よりやや広い幅Ｌとなる支持片挿入部１４が形成されている。
【００２０】
上記構成を有する本実施例の額縁における裏板の固定具では、額縁枠３の組立前に、図３に示すように溝３０のレール部３１に一対の固定具本体１をばね部材６を介装した状態で嵌挿し、任意の位置で一方の固定具本体１のビス９を締め付けてこの固定具本体１を固定する。
【００２１】
そして、図３及び図４に示すように、額縁枠３にガラスや作品、裏板４をセットした後、押さえ片２の支持片１１を２つの固定具本体１の間の支持片挿入部１４から挿入する。
【００２２】
支持片１１を支持片挿入部１４に挿入すると、支持片１１のテーパが支持片挿入部１４に係合し、図４から図５に示すように固定具本体１の間隔をばね部材６の付勢力に抗して押し広げる。
そして、支持片１１は、押さえ片２の縁部２ａが固定具本体１の係止片５に近づいた段階で、支持片挿入部１４から外れて上記係合を解くことから、支持片１１を押し込むだけで押さえ片２の縁部２ａは係止片５の挟持側縁部５ａに自動的に係止される。
【００２３】
この状態から、さらに押さえ片２を裏板４側に押し込むと、例えば、図１及び図２に示すように、押さえ片２は係止片５の挟持側縁部５ａと係止しながら任意の押し込み位置で自動的に止まり、裏板４は額縁枠３に強固に固定される。
この場合、必要に応じて、残るもう一方の固定具本体１のビス９を締め付けて、この固定具本体１を固定できるが、ばね部材６の力で係止片５の挟持側縁部５ａと係止する押さえ片２は、両方の固定具本体１を固定しなくても逆戻りすることはない。
【００２４】
すなわち、本実施例の裏板の固定具においては、押さえ片２を額縁枠３の内周面３３に沿うように摺動させ、固定具本体１の係止片５で挟むことによって固定できることから、係止片５の長さの範囲内において押さえ片２を自由に位置決めすることができ、これにより作品の厚みにかかわらず裏板４を押さえて、簡単かつ確実に固定することができる。
そして、各係止片５の挟持側縁部５ａの鋸歯を、押さえ片２を額縁枠の表方向には進行させ、かつ逆方向には止める角度に形成したことにより、上記のように押さえ片２を押し込むだけで裏板４を固定することができる。
【００２５】
さらに、各係止片５の挟持側縁部５ａをそれぞれ額縁枠３の裏側から表側に行くに従い漸次間隔が拡がるテーパ状に形成したことにより、押さえ片２の押し込みが楽に行えるとともに、各係止片５と押さえ片２の係止状態を浅くした場合でも押さえ片２の逆戻りを防ぐことが可能である。
【００２６】
また、支持片１１をテーパを付して延出するとともに、２つの固定具本体１の間に支持片先端部１１ａより幅広の支持片挿入部１４を形成したことにより、支持片１１を押し込むだけで押さえ片２の縁部２ａを係止片５に自動的に係止させることが可能である。
【００２７】
以上、本発明の実施例を説明したが、係止片５の挟持側縁部５ａの形状は、必ずしも前記したようなテーパ状に形成する必要はなく、例えば、天板部７に直交するような真直ぐな形状にすることもできる。
【００２８】
【発明の効果】
本発明の額縁における裏板の固定具によれば、裏板の押さえ片を額縁枠の内周面に沿うように摺動させ、固定具本体の係止片で挟むことによって固定できることから、係止片の長さの範囲内において押さえ片を自由に位置決めすることができ、これにより作品の厚みにかかわらず裏板を押さえて、簡単かつ確実に固定することができる。
【００２９】
また、各係止片の挟持側縁部の鋸歯を、押さえ片を額縁枠の表方向には進行させる、係合片の中心線に対して１０〜３０°の角度を有する進行部と、逆方向には止める、これとは逆方向の８０〜６０°の角度を有する係止部とを有するように形成することにより、押さえ片を押し込むだけで裏板を固定することが可能となる。
【００３０】
また、各係止片の挟持側縁部をそれぞれ漸次間隔が拡がるテーパ状に形成することにより、上記押さえ片の押し込みを楽に行えるとともに、各係止片と押さえ片の係止状態を浅くした場合でも押さえ片の逆戻りを防ぐことが可能となる。
【００３１】
そして、固定具本体の少なくとも一方に、固定具本体を額縁枠に固定する固定手段を設けることにより、固定具全体の額縁枠に対する位置固定を図ることが可能である。
【００３２】
また、支持片をテーパを付して延出するとともに、２つの固定具本体の間に支持片先端部より幅広の支持片挿入部を形成することにより、支持片を押し込むだけで押さえ片の縁部を係止片に自動的に係止させることが可能となる。
【図面の簡単な説明】
【図１】本発明の額縁における裏板の固定具の一実施例を示す斜視図である。
【図２】同一部断面正面図である。
【図３】同押さえ片の挿入前の状態を示す一部断面正面図である。
【図４】同平面図である。
【図５】同押さえ片の挿入時の状態を示す平面図である。
【符号の説明】
１固定具本体
２押さえ片
２ａ縁部
３額縁枠
４裏板
５係止片
５ａ挟持側縁部
６ばね部材
７天板部
８爪部材
９ビス
１０押さえ片本体
１１支持片
１１ａ先端部
１２固定用ビス孔
１３掛止用爪部
１４支持片挿入部
３０溝
３１レール部
３２溝底部
３３額縁枠の内周面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixture for a canvas, a back plate and the like (hereinafter simply referred to as “back plate”) in a frame.
[0002]
[Prior art]
The frame is placed inside the frame frame so that a transparent glass plate on the front side, works such as photographs in the middle, and a back plate on the back side are stacked one after another. I try to fix it.
On the back side surface of the Tomehen picture-frame frame, turning as this has one end to pivot along the back side surface is axially mounted, the other end portion projecting into the frame frame In such a state, the back plate is pressed and fixed together with the glass plate and the work.
[0003]
[Problems to be solved by the invention]
However, in the above-described fixture conventional frame of the back plate, because stop piece is configured to pivot along the back side surface of the frame frame, a glass plate or a work is disposed in the frame frame, and the back plate If the total thickness of the frame is smaller than the effective thickness of the frame, the back plate cannot be sufficiently fixed by the stopper, and the photograph or certificate placed in the middle moves due to vibration or the like. There was a problem.
[0004]
In view of the above-described problems of the conventional fixing device for the back plate in the frame, the present invention can be easily mounted and operated on the frame and can securely fix the back plate regardless of the thickness of the work. An object of the present invention is to provide a fixing device for a back plate in a frame.
[0005]
[Means for Solving the Problems]
To achieve the above object, fastener backing plate in the frame of the present invention, in the fastener of the back plate to be attached to a groove formed on the back side of the frame frame to secure the back plate, the inner periphery of the frame frame A pair of fixings having a locking piece along the surface and a top plate portion orthogonal to the locking piece, the top plate portion being slidably mounted in the groove, and urged in a direction to attract each other A tool body, and a support piece supported between each of the locking pieces and the frame, and a holding piece for holding the back plate from the back side, the edge of which is sandwiched between the locking pieces. And the holding side edge of each locking piece is formed in a sawtooth shape so that the edge of the holding piece can be locked.
[0006]
The fixing device of the back plate of the present invention can be fixed by sliding the pressing piece along the inner peripheral surface of the frame and sandwiching it between the locking pieces of the fixing device main body. The pressing piece can be freely positioned inside, and the back plate can be pressed and fixed easily and reliably regardless of the thickness of the work.
[0007]
In this case, the sawtooth clamping side edge of each locking piece, progressive portion having an angle of 10 to 30 ° to the pressing piece in the table direction of the frame frame Ru allowed to proceed, with respect to the engaging pieces of the center line It can also be formed to have a locking portion having an angle of 80 to 60 ° in the opposite direction. Can be fixed.
[0008]
Further, it is possible to form the holding side edge of each locking piece in a tapered shape in which the interval gradually increases as it goes in the front direction of the frame, thereby making it easy to push in the pressing piece, Even when the locking state of the locking piece and the pressing piece is shallow, it is possible to prevent the pressing piece from returning backward.
[0009]
In addition, it is possible to provide fixing means for fixing the fixing body to the frame frame on at least one fixing body, and to fix the position of the entire fixing frame to the frame frame.
[0010]
Further, the support piece extends from the vicinity of the edge of the holding piece in the front direction of the frame frame with a taper that narrows the tip, and each fixture body is attracted between the pair of fixture bodies. It is also possible to form a support piece insertion portion that is wider than the tip end portion of the support piece in the closest state, so that when the support piece is inserted into the support piece insertion portion, the taper of the support piece is inserted into the support piece. The support piece is pushed in by expanding the distance between the fixture body against the urging force and releasing the engagement when the edge of the holding piece approaches the locking piece of the fixture body. It becomes possible to automatically lock the edge portion of the pressing piece to the locking piece.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a back plate fixture in a frame of the present invention will be described with reference to the drawings.
[0012]
1 to 5 show an embodiment of a fixing device for a back plate in a frame of the present invention.
Fastener backing plate in the frame is intended to be installed in the groove 30 formed on the back side of the frame frame 3 to secure the frame of the back plate 4, a pair of fixing device body 1, the back plate 4 and a pressing piece 2 for pressing 4.
[0013]
Fixing device body 1 has a locking piece 5 along the inner circumferential surface 33 of the frame frame 3 has a top plate portion 7 orthogonal to the locking piece 5, the top plate portion 7 is slidable in the groove 30 The pressing piece 2 is sandwiched between the locking pieces 5 of the fixture main body 1 and the edge portion 2a is sandwiched between them. The back plate 4 is pressed from the back side.
[0014]
The groove 30 of the frame 3 has a rail portion 31 projecting inward from each side wall of the groove, and the fixture body 1 includes a top plate portion 7 positioned above the rail portion 31 and the top plate. Four claw members 8 extending from both ends of the portion 7 and positioned below the rail portion 31 are provided. That is, the fixture main body 1 is slidably attached to the rail portion 31 by sandwiching the rail portion 31 between the top plate portion 7 and the claw member 8.
[0015]
The top plate 7 is threaded with a screw hole, and a screw 9 is screwed into the screw hole as a fixing means. By tightening the screw 9 and bringing it into contact with the bottom 32 of the groove 30, at least one of the fixture main bodies 1 can be fixed. Note that the spring member 6 is installed on the screw 9 across the two fixture main bodies 1.
[0016]
On the other hand, the locking piece 5 of the fixture main body 1 is formed in a saw-tooth shape in which each clamping side edge 5 a is locked by the edge of the pressing piece 2. As shown in FIG. 3, the saw-tooth of the holding side edge portion 5 a has a shape in which the holding piece 2 is advanced in the front direction (pushing direction) A of the frame and stopped in the direction opposite to the front direction A, as shown in FIG. The advancing portion 5a ₁ which is a portion having an angle θ ₁ of approximately 10 to 30 ° with respect to the center line L of the engagement piece 5, and a portion having an angle θ ₂ of approximately 80 to 60 ° in the opposite direction. it is formed to have a locking portion 5a ₂ at.
Further, each locking piece 5 is formed in a taper shape in which the holding side edge portion 5a gradually increases as it goes in the front direction A of the frame 3. The shape of the fixture main body 1 including the locking piece 5 is formed symmetrically as shown in the figure so that the pair of fixture main bodies 1 can be shared.
[0017]
The holding-side edge portion 5a of the locking piece 5 is formed so as to slightly protrude toward the holding piece 2 side, and the holding-side edge portion 5a attaches the support piece 11 of the holding piece 2 to the inner periphery of the frame frame 3. The support piece 11 is slidably supported by being sandwiched between the surfaces 33.
[0018]
On the other hand, the pressing piece 2 includes a flat plate-like pressing piece body 10 which is affixed to the back side surface of the back plate 4, a substantially right angle from the base of the pressing element body 10 along the inner circumferential surface 33 of the frame frame 3 It consists of the extended flat support piece 11.
The holding piece 2 is provided with a fixing screw hole 12 and a hooking claw portion 13 for the back plate 4.
[0019]
The support piece 11 extends from the vicinity of the edge portion 2 a of the pressing piece 2 in the front direction A of the frame frame 3 with a taper that narrows the tip end portion 11 a.
On the other hand, as shown in FIGS. 3 and 4, between the two fixture main bodies 1, each fixture main body 1 is attracted by the spring member 6 and is closest to the tip 11 a of the support piece 11. A support piece insertion portion 14 having a width L that is slightly wider than the width is formed.
[0020]
In the fixing device for the back plate in the frame of the present embodiment having the above-described configuration, before the frame frame 3 is assembled, as shown in FIG. The fixing tool body 1 is fixed by tightening the screw 9 of one fixing tool body 1 at an arbitrary position.
[0021]
And after setting glass, a work, and the back plate 4 to the frame 3 as shown in FIG.3 and FIG.4, the support piece insertion part 14 between the two fixing tool main bodies 1 of the support piece 11 of the pressing piece 2 is used. Insert from.
[0022]
When the support piece 11 is inserted into the support piece insertion portion 14, the taper of the support piece 11 engages with the support piece insertion portion 14, and the interval of the fixture main body 1 is attached to the spring member 6 as shown in FIGS. 4 to 5. Push out against the forces.
The support piece 11 is released from the support piece insertion portion 14 when the edge 2a of the pressing piece 2 approaches the locking piece 5 of the fixture body 1 and releases the above-mentioned engagement. The edge 2 a of the pressing piece 2 is automatically locked to the clamping side edge 5 a of the locking piece 5 simply by pushing.
[0023]
When the pressing piece 2 is further pushed into the back plate 4 from this state, for example, as shown in FIGS. 1 and 2, the pressing piece 2 engages with the holding side edge portion 5 a of the locking piece 5 and is arbitrarily It automatically stops at the pushing position, and the back plate 4 is firmly fixed to the frame 3.
In this case, if necessary, the other fixing tool body 1 can be tightened with the screws 9 of the other fixing tool body 1 to fix the fixing tool body 1, but with the force of the spring member 6, The holding piece 2 to be locked does not reverse even if both the fixture main bodies 1 are not fixed.
[0024]
That is, in the fixture of the back plate of the present embodiment, it can be fixed by sliding the pressing piece 2 along the inner peripheral surface 33 of the frame 3 and sandwiching it with the locking piece 5 of the fixture body 1. The pressing piece 2 can be freely positioned within the range of the length of the locking piece 5, and the back plate 4 can be pressed and fixed easily and reliably regardless of the thickness of the work.
Then, the saw-tooth of the holding side edge portion 5a of each locking piece 5 is formed at an angle at which the pressing piece 2 is advanced in the front direction of the frame frame and stopped in the opposite direction, so that the pressing piece is as described above. The back plate 4 can be fixed simply by pushing 2 in.
[0025]
Further, the holding side edge 5a of each locking piece 5 is formed in a taper shape in which the interval gradually increases as it goes from the back side of the frame frame 3 to the front side. Even when the locking state between the piece 5 and the holding piece 2 is shallow, it is possible to prevent the holding piece 2 from returning backward.
[0026]
Further, the support piece 11 is extended with a taper, and the support piece insertion portion 14 wider than the support piece tip portion 11a is formed between the two fixture main bodies 1, so that the support piece 11 is simply pushed. Thus, the edge 2a of the pressing piece 2 can be automatically locked to the locking piece 5.
[0027]
As mentioned above, although the Example of this invention was described, the shape of the holding | grip side edge part 5a of the latching piece 5 does not necessarily need to form in the taper shape as mentioned above, for example so that it may orthogonally cross to the top-plate part 7. It can also be a straight shape.
[0028]
【The invention's effect】
According to the fixing device for the back plate in the frame of the present invention, it can be fixed by sliding the pressing piece of the back plate along the inner peripheral surface of the frame and sandwiching it between the locking pieces of the fixing device body. The pressing piece can be freely positioned within the range of the length of the stopping piece, so that the back plate can be pressed and fixed easily and reliably regardless of the thickness of the work.
[0029]
Also, a sawtooth clamping side edge of each locking piece, the table direction of the frame frame the pressing piece Ru allowed to proceed, a traveling portion having an angle of 10 to 30 ° with respect to the center line of the engagement piece, The back plate can be fixed simply by pushing in the pressing piece by forming it in a reverse direction and having a locking portion having an angle of 80 to 60 ° in the opposite direction .
[0030]
In addition, when the holding side edge of each locking piece is formed in a taper shape with gradually increasing intervals, the pressing piece can be pushed in easily, and the locking state between each locking piece and the holding piece is shallow. However, it becomes possible to prevent the holding piece from returning backward.
[0031]
Then, it is possible to fix the position of the entire fixture relative to the frame by providing a fixing means for fixing the fixture main body to the frame frame on at least one of the fixture main bodies.
[0032]
In addition, the support piece is extended with a taper, and a support piece insertion portion wider than the tip end portion of the support piece is formed between the two fixture main bodies, so that the edge of the press piece can be simply pushed in. The portion can be automatically locked to the locking piece.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a fixing device for a back plate in a frame of the present invention.
FIG. 2 is a sectional front view of the same part.
FIG. 3 is a partial cross-sectional front view showing a state before the pressing piece is inserted.
FIG. 4 is a plan view of the same.
FIG. 5 is a plan view showing a state when the pressing piece is inserted.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fixing tool main body 2 Pressing piece 2a Edge part 3 Frame frame 4 Back plate 5 Locking piece 5a Holding side edge part 6 Spring member 7 Top plate part 8 Claw member 9 Screw 10 Holding piece main body 11 Supporting piece 11a Tip part 12 Fixing Screw hole 13 Claw part for latching 14 Support piece insertion part 30 Groove 31 Rail part 32 Groove bottom part 33 Inner peripheral surface of frame

Claims

A fixing device for a back plate to be mounted in a groove formed on the back side of the frame frame in order to fix the back plate, and has a locking piece along the inner peripheral surface of the frame frame and a top plate portion orthogonal to the locking piece. The top plate is slidably mounted in the groove, and is supported between a pair of fixture bodies urged in a pulling direction and the locking pieces and the frame. Each holding piece has an edge held between the holding pieces, and a holding piece for holding the back plate from the back side. The holding side edge of each holding piece is formed in a sawtooth shape and pressed. A fixing device for a back plate in a picture frame, wherein an edge of a piece can be locked.

The saw blades on the clamping side edge of each locking piece are moved in the opposite direction to the advancing portion having an angle of 10 to 30 ° with respect to the center line of the engaging piece, which advances the holding piece in the front direction of the frame. 2. The fixing device for a back plate in a picture frame according to claim 1, wherein the fixing device has a locking portion having an angle of 80 to 60 [deg.] In the opposite direction .

3. A fixing device for a back plate in a frame according to claim 1, wherein the holding side edge of each locking piece is formed in a tapered shape in which the interval gradually increases as it goes in the front direction of the frame.

The fixture of the back plate in a frame of any one of Claims 1-3 which provided the fixing means which fixes this fixture main body to a frame frame in at least one fixture main body.

The support piece extends from the vicinity of the edge of the pressing piece in the front direction of the frame frame with a taper that narrows the tip, and each fixture body is attracted most between the pair of fixture bodies. The fixture of the back plate in a frame of any one of Claims 1-4 which formed the support piece insertion part wider than the front-end | tip part of the said support piece in the state which approached.