JP3633757B2

JP3633757B2 - Bullet ball machine

Info

Publication number: JP3633757B2
Application number: JP17904397A
Authority: JP
Inventors: 邦夫松元
Original assignee: 株式会社藤商事
Priority date: 1997-06-18
Filing date: 1997-06-18
Publication date: 2005-03-30
Anticipated expiration: 2017-06-18
Also published as: JPH114945A

Description

【０００１】
【発明の属する技術分野】
本発明は、パチンコ機、アレンジボール機等の弾球遊技機に関するものである。
【０００２】
【従来の技術】
パチンコ機等の弾球遊技機では、図８及び図９に示すように、矩形枠状の外枠１と、この外枠１の前側に配置され且つ上下一対のヒンジ２により開閉自在に枢着された前枠３とを備えている。前枠３には、矩形孔状の窓孔４と、この窓孔４を取り囲むように前枠３の裏側に装着された遊技盤装着枠５とが設けられ、その遊技盤装着枠５に裏側から遊技盤６が着脱自在に嵌め込まれている。
【０００３】
遊技盤装着枠５には、上下一対のヒンジ７を介して開閉自在に枢着された裏機構板８と、この裏機構板８を閉状態で遊技盤装着枠５に固定する４個の固定レバー９とが設けられ、遊技盤装着枠５に嵌め込まれた遊技盤６を裏機構板８で後方から押圧した状態で、裏機構板８が固定レバー９により遊技盤装着枠５側に締結されている。前枠３は、遊技球を貯留する上皿、この上皿から供給された遊技球を発射させる発射手段１０等が装着されている。裏機構板８には、遊技盤６の裏側の裏カバー１２が嵌合する開口１３が形成されると共に、その開口１３の上側に賞球タンク１４及びタンクレール１５が、右側に払い出し手段１６が、下側に制御ユニット１７が夫々装着されている。
【０００４】
上下一対のヒンジ７は、図１０に示すように、下端の受け部１８側にヒンジ軸１９が固定された固定ブラケット２０と、受け部１８上に当接する当接部２１に回動孔２２が形成された可動ブラケット２３とを備え、その固定ブラケット２０が遊技盤装着枠５に、可動ブラケット２３が裏機構板８に夫々固定されている。ヒンジ軸１９は上端側がテーパー状で、このヒンジ軸１９が当接部２１の回動孔２２に下側から嵌脱するようになっている。
【０００５】
【発明が解決しようとする課題】
従来の弾球遊技機では、裏機構板８を上下一対のヒンジ７を介して遊技盤装着枠５に取り付ける場合、各可動ブラケット２３の当接部２１の回動孔２２を各固定ブラケット２０の受け部１８のヒンジ軸１９の上側に位置させた状態で、回動孔２２とヒンジ軸１９との軸心を合わせた後、裏機構板８を下降させて各可動ブラケット２３の回動孔２２に各固定ブラケット２０のヒンジ軸１９を嵌合させる方法を採っている。
このため、従来のヒンジ構造では、上下の各ヒンジ７の回動孔２２とヒンジ軸１９との軸心を合わせて略同時に嵌合させる必要があり、裏機構板８を遊技盤装着枠５に取り付ける場合の作業が非常に煩雑になる欠点がある。
【０００６】
特に裏機構板８は形状的に大きい上に、この裏機構板８には賞球タンク１４、払い出し手段１６等の裏機構部品が装着され、また払い出し手段１６等に接続されたリード線等が配線されているので、各ヒンジ７の回動孔２２とヒンジ軸１９との軸心を合わせる作業は非常に困難である。
本発明は、このような従来の課題に鑑み、構造が簡単であり、しかも裏機構板を複数個のヒンジを介して容易に装着できる弾球遊技機を提供することを目的とする。
【０００７】
【課題を解決するための手段】
請求項１に記載の本発明は、前枠３側に固定された受け部１８と、裏機構板８側に固定され且つ受け部１８上に当接してヒンジ軸１９の軸心廻りに回動自在な当接部２１とを備えたヒンジ７を上下方向に一対設け、このヒンジ７を介して前枠３側に裏機構板８を着脱及び開閉自在に枢着した弾球遊技機において、各ヒンジ７の上下方向のヒンジ軸１９を受け部１８に上向き又は当接部２１に下向きに固定し、各ヒンジ軸１９に大径の回動軸部３１及び大径の外れ阻止部２７と、これらの間に形成された小径の嵌脱部２９と、嵌脱部２９と回動軸部３１及び外れ阻止部２７間に形成され且つ嵌脱部２９側が細くなる案内用のテーパー部３０，２８とを軸心方向に設け、ヒンジ軸１９と反対側の受け部１８又は当接部２１に、当接部２１が受け部１８上に当接した状態で回動軸部３１が回動自在に嵌合する回動孔２２と、嵌脱部２９側を介して回動軸部３１が回動孔２２に嵌脱すべく嵌脱部２９側を案内し且つ回動軸部３１側の通過を阻止する案内溝３４とを設け、回動軸部３１側のテーパー部３０の勾配を大きくし、外れ阻止部２７側のテーパー部２８の勾配を小さくしたものである。
請求項２に記載の本発明は、請求項１に記載の発明において、外れ阻止部２７と回動軸部３１とを略同一径の円柱状に構成したものである。
【０００８】
請求項３に記載の本発明は、請求項１又は２に記載の発明において、前枠３側の固定ブラケット２０の下端部に受け部１８を折り曲げ形成し、この受け部１８上にヒンジ軸１９を固定し、裏機構板８側の可動ブラケット２３の下端部に当接部２１を折り曲げ形成し、この当接部２１に回動孔２２と案内溝３４とを設けたものである。
請求項４に記載の本発明は、請求項１乃至３の何れかに記載の発明において、案内溝３４の外端側を外広がり状に開口させたものである。
【０００９】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて詳述する。なお、従来と同一物については同一名称、同一符号を使用して、その図示等を省略する。
この弾球遊技機は、図５に示すように、前枠３の裏側の遊技盤装着枠５に上下一対のヒンジ７を介して裏機構板８が着脱及び開閉自在に枢支され、遊技盤装着枠５に裏側から嵌め込まれた遊技盤６を裏機構板８で押圧し固定するようになっている。
【００１０】
各ヒンジ７は、図１乃至図４に示すように、遊技盤装着枠５側の固定ブラケット２０と、裏機構板８側の可動ブラケット２３とを備えている。固定ブラケット２０は、上下方向の取り付け部２４と、この取り付け部２４の下端から後方へとＬ字状に屈曲する受け部１８と、受け部１８上に固定されたヒンジ軸１９とを有し、その取り付け部２４が遊技盤装着枠５の凹部２５に上下一対のネジ２６により着脱自在に固定されている。
【００１１】
ヒンジ軸１９は、図３及び図４に示すように、上から順番に上大径軸部２７、上テーパー部２８、小径軸部２９、下テーパー部３０、下大径軸部３１及び取り付け軸部３２を略同一軸心上に備え、その下端の取り付け軸部３２が受け部１８にカシメにより固定されている。上大径軸部２７は外れ阻止部を、下大径軸部３１は回動軸部を夫々構成するものであり、これらは略同一径の円柱状で、後者が前者の略２〜３倍程度の長さになっている。
【００１２】
小径軸部２９は嵌脱部を構成するものであり、上下の大径軸部よりも小径の円柱状で、下大径軸部３１よりも若干短くなっている。小径軸部２９の上下には、その上下両側の大径軸部２７，３１との間に、この小径軸部２９から各大径軸部２７，３１側に移るに従って大径となるテーパー部２８，３０があり、その上テーパー部２８の勾配αは４５°前後とし、下テーパー部３０の勾配βは６０°前後としている。
【００１３】
可動ブラケット２３は、上下方向の取り付け部３３と、この取り付け部３３の下端から前方へとＬ字状に屈曲する当接部２１と、当接部２１に形成された回動孔２２及び案内溝３４とを備え、その取り付け部３３が裏機構板８の突出部３５の裏側に上下一対のネジ２６ａにより着脱自在に固定されている。
当接部２１は、固定ブラケット２０の受け部１８上に当接可能であって、この当接部２１の先端側に回動孔２２と案内溝３４とが形成されている。回動孔２２はヒンジ軸１９の下大径軸部３１が適度な遊びで回動自在に嵌合するように円形状に形成され、この回動孔２２から裏機構板８の外側方向に案内溝３４が形成されている。
【００１４】
案内溝３４は、図２及び図４に示すように、小径軸部２９側を介して下大径軸部３１が回動孔２２に嵌脱すべく小径軸部２９側を案内すると共に、下大径軸部３１側の通過を阻止するためのもので、回動孔２２側の内端側が小径軸部２９よりも若干広い程度の幅で、この内端側から外側へと移るに従って幅が徐々に広がるように外広がり状に開口している。
なお、裏機構板８及び突出部３５には、その周辺部分を含む適当箇所に補強リブ３６，３７が形成され、また突出部３５側の補強リブ３７には、固定ブラケット２０側のヒンジ軸１９等と干渉しないように切り欠き部３８が形成されている。
【００１５】
上記構成のヒンジ構造を有する弾球遊技機において、上下一対のヒンジ７を介して裏機構板８を前枠３側の遊技盤装着枠５に装着する際には、前枠３をヒンジ２廻りに前側へと開放した後、その後方から上下一対の各ヒンジ７を結合して裏機構板８を遊技盤装着枠５に装着する。
【００１６】
各ヒンジ７を結合する場合には、図５乃至図７に示すように、可動ブラケット２３の案内溝３４の開口側を固定ブラケット２０のヒンジ軸１９側に向けた状態で裏機構板８を前枠３の後方に位置させ、その状態で各可動ブラケット２３の当接部２１の上下高さを各固定ブラケット２０のヒンジ軸１９の小径軸部２９に合わせて、その小径軸部２９を案内溝３４を経て回動孔２２に嵌合させる。
ヒンジ軸１９の小径軸部２９が回動孔２２に嵌合すれば、次に裏機構板８側をヒンジ軸１９に沿って下降させて、ヒンジ軸１９の下大径軸部３１を回動孔２２に嵌合させると共に、可動ブラケット２３の当接部２１を固定ブラケット２０の受け部１８上に当接させると、遊技盤装着枠５に裏機構板８を開閉自在に装着できる。
【００１７】
特に各可動ブラケット２３の当接部２１の案内溝３４を、各固定ブラケット２０側に固定されたヒンジ軸１９の小径軸部２９に側方から合わせて、その案内溝３４を介してヒンジ軸１９の小径軸部２９を回動孔２２側へと案内するので、上下一対のヒンジ７の内、何れか一方側のヒンジ７の可動ブラケット２３の回動孔２２にヒンジ軸１９の小径軸部２９を嵌合させ、その状態で他方のヒンジ７側を同様に嵌合させることが可能であり、上下の各ヒンジ７の結合が従来に比較して容易であり、ヒンジ７を介して裏機構板８を遊技盤装着枠５に容易且つ能率的に装着できる。
【００１８】
またヒンジ軸１９の小径軸部２９が当接部２１の回動孔２２に嵌合した後、裏機構板８側を下降させて、可動ブラケット２３の回動孔２２にヒンジ軸１９の下大径軸部３１を嵌合させるが、その小径軸部２９と下大径軸部３１との間に下テーパー部３０があり、この下テーパー部３０に沿って可動ブラケット２３の当接部２１を案内するので、下大径軸部３１を当接部２１の回動孔２２に容易に嵌合できる。
しかも、ヒンジ軸１９の下大径軸部３１が当接部２１の回動孔２２に嵌合すれば、ヒンジ７がその下側の受け部１８に当接して受け止められるので、ヒンジ軸１９の下大径軸部３１を当接部２１の回動孔２２に嵌合させた後は、固定ブラケット２０側の受け部１８、ヒンジ軸１９により可動ブラケット２３側を容易且つ確実に支承できる。
【００１９】
可動ブラケット２３側の当接部２１の案内溝３４をヒンジ軸１９の小径軸部２９側に向けた状態において、その当接部２１の高さがヒンジ軸１９の小径軸部２９に対応していれば、外広がり状の案内溝３４を介して小径軸部２９を回動孔２２側へと円滑に案内でき、小径軸部２９を回動孔２２に容易に嵌合させることが可能である。
また可動ブラケット２３側の当接部２１がヒンジ軸１９の小径軸部２９に対して上下方向に若干ずれていた場合にも、小径軸部２９の上下両側にテーパー部２８，３０があるため、この上下のテーパー部２８，３０の範囲内であれば、当接部２１の案内溝３４の開口端側が当接することによって、テーパー部２８，３０により当接部２１を小径軸部２９側へと上下方向に案内できる。このため、可動ブラケット２３の当接部２１の上下高さを固定ブラケット２０側のヒンジ軸１９の小径軸部２９に厳密に合わせる必要がなく、装着時の作業を容易にできる。
更に下テーパー部３０の勾配を大きくしてヒンジ７の下大径軸部３１が回動孔２２に嵌合する時に円滑に案内できるようにする一方、上下方向の荷重が掛からない上テーパー部２８の勾配を小さくしているので、ヒンジ軸１９の長さを短くできる。
【００２０】
以上、本発明の実施形態について説明したが、本発明はこの実施形態に限定されるものではない。
例えば、固定ブラケット２０の受け部１８側に回動孔２２と案内溝３４とを設け、可動ブラケット２３側に当接部２１と、この当接部２１から下方に突出するヒンジ軸１９とを設けても良い。
この場合、ヒンジ軸１９の構成は、実施形態とは逆にすれば良い。
また実施形態では、回動軸部を下大径軸部３１により、嵌脱部を小径軸部２９により夫々構成しているが、嵌脱部は断面小判状、半円状、偏平矩形状等に構成することも可能である。
【００２１】
【発明の効果】
本発明によれば、前枠３側に固定された受け部１８と、裏機構板８側に固定され且つ受け部１８上に当接してヒンジ軸１９の軸心廻りに回動自在な当接部２１とを備えたヒンジ７を上下方向に一対設け、このヒンジ７を介して前枠３側に裏機構板８を着脱及び開閉自在に枢着した弾球遊技機において、各ヒンジ７の上下方向のヒンジ軸１９を受け部１８に上向き又は当接部２１に下向きに固定し、各ヒンジ軸１９に大径の回動軸部３１及び大径の外れ阻止部２７と、これらの間に形成された小径の嵌脱部２９と、嵌脱部２９と回動軸部３１及び外れ阻止部２７間に形成され且つ嵌脱部２９側が細くなる案内用のテーパー部３０，２８とを軸心方向に設け、ヒンジ軸１９と反対側の受け部１８又は当接部２１に、当接部２１が受け部１８上に当接した状態で回動軸部３１が回動自在に嵌合する回動孔２２と、嵌脱部２９側を介して回動軸部３１が回動孔２２に嵌脱すべく嵌脱部２９側を案内し且つ回動軸部３１側の通過を阻止する案内溝３４とを設け、回動軸部３１側のテーパー部３０の勾配を大きくし、外れ阻止部２７側のテーパー部２８の勾配を小さくしているので、簡単な構造で、しかも裏機構板８を複数個のヒンジ７を介して前枠３側に容易に装着できる。
【００２２】
本発明によれば、前枠３側の固定ブラケット２０の下端部に受け部１８を折り曲げ形成し、この受け部１８上にヒンジ軸１９を固定し、裏機構板８側の可動ブラケット２３の下端部に当接部２１を折り曲げ形成し、この当接部２１に回動孔２２と案内溝３４とを設けているので、受け部１８、ヒンジ軸１９を含む固定ブラケット２０側、及び回動孔２２、案内溝３４付きの当接部２１を含む可動ブラケット２３側の構造を簡単にでき、しかも裏機構板８を複数個のヒンジ７を介して前枠３側に容易に装着できる。
本発明によれば、案内溝３４の外端側を外広がり状に開口させているので、案内溝３４を経て嵌脱部２９又は小径軸部２９を容易に案内できる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示す弾球遊技機のヒンジ部分の縦断面図である。
【図２】本発明の一実施形態を示す弾球遊技機のヒンジ部分の横断面図である。
【図３】本発明の一実施形態を示すヒンジ軸部の拡大図である。
【図４】本発明の一実施形態を示す弾球遊技機のヒンジ部分の分解斜視図である。
【図５】本発明の一実施形態を示す弾球遊技機の分解縦断面図である。
【図６】本発明の一実施形態を示す弾球遊技機のヒンジ部分の分解横断面図である。
【図７】本発明の一実施形態を示す弾球遊技機のヒンジ部分の分解縦断面図である。
【図８】従来の弾球遊技機を示す斜視図である。
【図９】従来の弾球遊技機を示す背面図である。
【図１０】従来の弾球遊技機を示す分解縦断面図である。
【符合の説明】
３前枠
７ヒンジ
８裏機構板
１８受け部
１９ヒンジ軸
２０固定ブラケット
２１当接部
２２回動孔
２３可動ブラケット
２９小径軸部（嵌脱部）
３０テーパー部
３１下大径軸部（回動軸部）
３４案内溝[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ball game machine such as a pachinko machine or an arrangement ball machine.
[0002]
[Prior art]
In a ball game machine such as a pachinko machine, as shown in FIGS. 8 and 9, a rectangular frame-shaped outer frame 1 and a pair of upper and lower hinges 2 disposed in front of the outer frame 1 are pivotably mounted. The front frame 3 is provided. The front frame 3 is provided with a rectangular hole-shaped window hole 4 and a game board mounting frame 5 mounted on the back side of the front frame 3 so as to surround the window hole 4. The game board 6 is detachably fitted.
[0003]
The game board mounting frame 5 is provided with a back mechanism plate 8 pivotably attached via a pair of upper and lower hinges 7 and four fixings for fixing the back mechanism plate 8 to the game board mounting frame 5 in a closed state. The back mechanism plate 8 is fastened to the side of the game board mounting frame 5 by the fixing lever 9 in a state where the game board 6 fitted in the game board mounting frame 5 is pressed from the rear by the back mechanism plate 8. ing. The front frame 3 is equipped with an upper plate for storing game balls, and a launching means 10 for firing game balls supplied from the upper plate. The back mechanism plate 8 has an opening 13 into which the back cover 12 on the back side of the game board 6 is fitted, a prize ball tank 14 and a tank rail 15 above the opening 13, and a payout means 16 on the right side. The control units 17 are respectively mounted on the lower side.
[0004]
As shown in FIG. 10, the pair of upper and lower hinges 7 includes a fixed bracket 20 in which a hinge shaft 19 is fixed on the receiving portion 18 side at the lower end, and a rotating hole 22 in an abutting portion 21 that abuts on the receiving portion 18. The movable bracket 23 is formed, and the fixed bracket 20 is fixed to the game board mounting frame 5 and the movable bracket 23 is fixed to the back mechanism plate 8. The hinge shaft 19 is tapered at the upper end side, and the hinge shaft 19 is fitted into and removed from the rotation hole 22 of the contact portion 21 from below.
[0005]
[Problems to be solved by the invention]
In the conventional ball game machine, when the back mechanism plate 8 is attached to the game board mounting frame 5 via the pair of upper and lower hinges 7, the rotation hole 22 of the abutting portion 21 of each movable bracket 23 is connected to each fixed bracket 20. After the pivot hole 22 and the hinge shaft 19 are aligned with each other while being positioned above the hinge shaft 19 of the receiving portion 18, the back mechanism plate 8 is lowered to rotate the pivot hole 22 of each movable bracket 23. A method of fitting the hinge shafts 19 of the respective fixing brackets 20 to each other is adopted.
For this reason, in the conventional hinge structure, it is necessary to fit the pivot centers 22 of the upper and lower hinges 7 and the hinge shafts 19 together and fit them substantially simultaneously, and the back mechanism plate 8 is attached to the game board mounting frame 5. There is a drawback that the work for mounting becomes very complicated.
[0006]
In particular, the back mechanism plate 8 is large in shape, and the back mechanism plate 8 is provided with back mechanism parts such as a prize ball tank 14 and a payout means 16, and lead wires connected to the payout means 16 and the like. Since the wires are wired, it is very difficult to align the axis of the rotation hole 22 of each hinge 7 and the hinge shaft 19.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a ball game machine that has a simple structure and can be easily mounted with a back mechanism plate via a plurality of hinges.
[0007]
[Means for Solving the Problems]
The present invention described in claim 1 includes a receiving portion 18 fixed to the front frame 3 side, and fixed to the back mechanism plate 8 side and abuts on the receiving portion 18 to rotate around the axis of the hinge shaft 19. In a ball game machine in which a pair of hinges 7 each having a free contact portion 21 is provided in the vertical direction, and a back mechanism plate 8 is pivotally attached to the front frame 3 side through the hinges 7 so as to be detachable and openable. The hinge shaft 19 in the vertical direction of the hinge 7 is fixed upward to the receiving portion 18 or downward to the contact portion 21 , and each hinge shaft 19 has a large-diameter rotation shaft portion 31 and a large-diameter come-off prevention portion 27, A small-diameter fitting / removal portion 29 formed between the guide portion 30 and the guide taper portions 30, 28 formed between the fitting / removal portion 29, the rotation shaft portion 31 and the disengagement prevention portion 27, and the fitting / removal portion 29 side becomes narrower. Is provided in the axial direction, and the contact portion 21 is provided on the receiving portion 18 or the contact portion 21 opposite to the hinge shaft 19. The rotating shaft part 31 is fitted in and removed from the rotating hole 22 through the fitting hole 29 and the turning hole 22 through which the turning shaft part 31 is rotatably fitted in a state of being in contact with the top 18. A guide groove 34 for guiding the fitting / removal portion 29 side as much as possible and preventing the passage on the rotation shaft portion 31 side is provided , and the gradient of the taper portion 30 on the rotation shaft portion 31 side is increased, and the dislocation prevention portion 27 side is increased . The gradient of the tapered portion 28 is reduced .
According to a second aspect of the present invention, in the first aspect of the present invention, the disengagement preventing portion 27 and the rotating shaft portion 31 are formed in a columnar shape having substantially the same diameter .
[0008]
According to a third aspect of the present invention, in the first or second aspect of the present invention , a receiving portion 18 is bent at the lower end portion of the fixing bracket 20 on the front frame 3 side, and a hinge shaft 19 is formed on the receiving portion 18. were fixed, contact portion 21 and the bent formed at the lower end of the back mechanism plate 8 side of the movable bracket 23, is provided with a this abutment 21 twice Doana 22 and the guide groove 34.
The present invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the outer end side of the guide groove 34 is opened outward .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, about the same thing as the past, the same name and the same code | symbol are used and the illustration etc. are abbreviate | omitted.
As shown in FIG. 5, the ball ball game machine has a back mechanism plate 8 pivotally supported by a game board mounting frame 5 on the back side of the front frame 3 via a pair of upper and lower hinges 7 so as to be detachable and openable. The game board 6 fitted into the mounting frame 5 from the back side is pressed and fixed by the back mechanism plate 8.
[0010]
As shown in FIGS. 1 to 4, each hinge 7 includes a fixed bracket 20 on the game board mounting frame 5 side and a movable bracket 23 on the back mechanism plate 8 side. The fixed bracket 20 includes a mounting portion 24 in the vertical direction, a receiving portion 18 bent in an L shape from the lower end of the mounting portion 24 to the rear, and a hinge shaft 19 fixed on the receiving portion 18. The mounting portion 24 is detachably fixed to the concave portion 25 of the game board mounting frame 5 by a pair of upper and lower screws 26.
[0011]
As shown in FIGS. 3 and 4, the hinge shaft 19 includes an upper large-diameter shaft portion 27, an upper taper portion 28, a small-diameter shaft portion 29, a lower taper portion 30, a lower large-diameter shaft portion 31, and a mounting shaft in order from the top. The part 32 is provided on substantially the same axis, and the attachment shaft part 32 at the lower end thereof is fixed to the receiving part 18 by caulking. The upper large-diameter shaft portion 27 constitutes a disengagement prevention portion, and the lower large-diameter shaft portion 31 constitutes a rotation shaft portion, which are substantially cylindrical with the same diameter, the latter being approximately 2 to 3 times the former. It is about the length.
[0012]
The small-diameter shaft portion 29 constitutes a fitting / removal portion, has a cylindrical shape with a smaller diameter than the upper and lower large-diameter shaft portions, and is slightly shorter than the lower large-diameter shaft portion 31. The small diameter shaft portion 29 has a taper portion 28 having a diameter that increases as it moves from the small diameter shaft portion 29 to the large diameter shaft portions 27, 31, between the large diameter shaft portions 27, 31 on both the upper and lower sides. , 30 and the slope α of the upper tapered portion 28 is about 45 °, and the slope β of the lower tapered portion 30 is about 60 °.
[0013]
The movable bracket 23 includes an attachment portion 33 in the vertical direction, a contact portion 21 bent in an L shape from the lower end of the attachment portion 33 to the front, a rotation hole 22 and a guide groove formed in the contact portion 21. 34, and the mounting portion 33 is detachably fixed to the back side of the protruding portion 35 of the back mechanism plate 8 by a pair of upper and lower screws 26a.
The abutting portion 21 can abut on the receiving portion 18 of the fixed bracket 20, and a rotation hole 22 and a guide groove 34 are formed on the distal end side of the abutting portion 21. The rotation hole 22 is formed in a circular shape so that the lower large-diameter shaft portion 31 of the hinge shaft 19 can be freely rotated with appropriate play, and is guided from the rotation hole 22 toward the outside of the back mechanism plate 8. A groove 34 is formed.
[0014]
As shown in FIGS. 2 and 4, the guide groove 34 guides the small diameter shaft portion 29 side through the small diameter shaft portion 29 side so that the lower large diameter shaft portion 31 can be fitted into and removed from the rotation hole 22. This is to prevent the passage on the diameter shaft portion 31 side, and the inner end side on the rotation hole 22 side is slightly wider than the small diameter shaft portion 29, and the width gradually increases from the inner end side to the outside. It is open outwardly so as to spread.
Reinforcing ribs 36 and 37 are formed on the back mechanism plate 8 and the protruding portion 35 at appropriate positions including the peripheral portion thereof, and the reinforcing rib 37 on the protruding portion 35 side is provided with the hinge shaft 19 on the fixed bracket 20 side. A notch 38 is formed so as not to interfere with the like.
[0015]
In the ball and ball game machine having the hinge structure having the above structure, when the back mechanism plate 8 is mounted on the game board mounting frame 5 on the front frame 3 side via the pair of upper and lower hinges 7, the front frame 3 is moved around the hinge 2. Then, the pair of upper and lower hinges 7 are joined from the rear to attach the back mechanism plate 8 to the game board mounting frame 5.
[0016]
When the hinges 7 are coupled, as shown in FIGS. 5 to 7, the back mechanism plate 8 is moved forward with the opening side of the guide groove 34 of the movable bracket 23 facing the hinge shaft 19 side of the fixed bracket 20. In this state, the vertical height of the contact portion 21 of each movable bracket 23 is matched with the small diameter shaft portion 29 of the hinge shaft 19 of each fixed bracket 20, and the small diameter shaft portion 29 is guided to the guide groove. It is made to fit in the rotation hole 22 through 34.
When the small-diameter shaft portion 29 of the hinge shaft 19 is fitted into the rotation hole 22, the back mechanism plate 8 side is lowered along the hinge shaft 19 and the lower large-diameter shaft portion 31 of the hinge shaft 19 is rotated. When the contact portion 21 of the movable bracket 23 is brought into contact with the receiving portion 18 of the fixed bracket 20 while being fitted into the hole 22, the back mechanism plate 8 can be attached to the game board mounting frame 5 so as to be freely opened and closed.
[0017]
In particular, the guide groove 34 of the abutment portion 21 of each movable bracket 23 is aligned with the small-diameter shaft portion 29 of the hinge shaft 19 fixed to the fixed bracket 20 side from the side, and the hinge shaft 19 is interposed via the guide groove 34. Since the small-diameter shaft portion 29 of the hinge shaft 19 is guided to the rotation hole 22 side, the small-diameter shaft portion 29 of the hinge shaft 19 is inserted into the rotation hole 22 of the movable bracket 23 of one of the upper and lower hinges 7. In this state, the other hinge 7 side can be similarly fitted, and the upper and lower hinges 7 can be easily coupled to each other as compared with the conventional case. 8 can be easily and efficiently mounted on the game board mounting frame 5.
[0018]
Further, after the small-diameter shaft portion 29 of the hinge shaft 19 is fitted into the rotation hole 22 of the contact portion 21, the back mechanism plate 8 side is lowered, and the lower size of the hinge shaft 19 is inserted into the rotation hole 22 of the movable bracket 23. Although the diameter shaft portion 31 is fitted, there is a lower taper portion 30 between the small diameter shaft portion 29 and the lower large diameter shaft portion 31, and the contact portion 21 of the movable bracket 23 is moved along the lower taper portion 30. Since it guides, the lower large-diameter shaft part 31 can be easily fitted into the rotation hole 22 of the contact part 21.
In addition, when the lower large-diameter shaft portion 31 of the hinge shaft 19 is fitted in the rotation hole 22 of the contact portion 21, the hinge 7 contacts and is received by the lower receiving portion 18, so that the hinge shaft 19 After the lower large-diameter shaft portion 31 is fitted into the rotation hole 22 of the contact portion 21, the movable bracket 23 side can be supported easily and reliably by the receiving portion 18 and the hinge shaft 19 on the fixed bracket 20 side.
[0019]
In a state where the guide groove 34 of the abutting portion 21 on the movable bracket 23 side faces the small diameter shaft portion 29 side of the hinge shaft 19, the height of the abutting portion 21 corresponds to the small diameter shaft portion 29 of the hinge shaft 19. Then, the small diameter shaft portion 29 can be smoothly guided to the rotation hole 22 side through the outwardly extending guide groove 34, and the small diameter shaft portion 29 can be easily fitted into the rotation hole 22. .
Even when the abutting portion 21 on the movable bracket 23 side is slightly displaced in the vertical direction with respect to the small diameter shaft portion 29 of the hinge shaft 19, the tapered portions 28 and 30 are provided on both upper and lower sides of the small diameter shaft portion 29. Within the range of the upper and lower taper portions 28 and 30, the opening end side of the guide groove 34 of the abutment portion 21 abuts so that the abutment portion 21 is moved toward the small diameter shaft portion 29 by the taper portions 28 and 30. Can be guided up and down. For this reason, it is not necessary to strictly match the vertical height of the contact portion 21 of the movable bracket 23 with the small-diameter shaft portion 29 of the hinge shaft 19 on the fixed bracket 20 side, and the work at the time of mounting can be facilitated.
Further, the gradient of the lower taper portion 30 is increased so that the lower large-diameter shaft portion 31 of the hinge 7 can be smoothly guided when fitted into the rotation hole 22, while the upper taper portion 28 is not subjected to a load in the vertical direction. Since the gradient of is reduced, the length of the hinge shaft 19 can be shortened.
[0020]
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment.
For example, the rotation hole 22 and the guide groove 34 are provided on the receiving portion 18 side of the fixed bracket 20, the contact portion 21 is provided on the movable bracket 23 side, and the hinge shaft 19 protruding downward from the contact portion 21 is provided. May be.
In this case, the configuration of the hinge shaft 19 may be reversed from that of the embodiment.
In the embodiment, the rotating shaft portion is constituted by the lower large-diameter shaft portion 31, and the fitting / removing portion is constituted by the small-diameter shaft portion 29. However, the fitting / removing portion has an oval cross-sectional shape, a semicircular shape, a flat rectangular shape, etc. It is also possible to configure.
[0021]
【The invention's effect】
According to the present invention, the receiving portion 18 fixed to the front frame 3 side and the abutting portion fixed to the back mechanism plate 8 side and abutting on the receiving portion 18 so as to be rotatable around the axis of the hinge shaft 19. In a ball game machine in which a pair of hinges 7 provided with a portion 21 is provided in the vertical direction, and the back mechanism plate 8 is pivotally attached to the front frame 3 side via the hinges 7 so as to be detachable and openable. Direction hinge shaft 19 is fixed to the receiving portion 18 upward or downward to the contact portion 21 , and each hinge shaft 19 is formed with a large-diameter rotating shaft portion 31 and a large-diameter come-off prevention portion 27 therebetween. The small-diameter fitting / removal portion 29 and the guide taper portions 30 and 28 formed between the fitting / removal portion 29, the rotation shaft portion 31 and the disengagement prevention portion 27 and narrowing on the fitting / removal portion 29 side are axially arranged. The abutting portion 21 is provided on the receiving portion 18 or the abutting portion 21 opposite to the hinge shaft 19. A rotation hole 22 in which the rotation shaft portion 31 is rotatably fitted in contact with the rotation shaft portion, and a fitting / removal portion for fitting the rotation shaft portion 31 in and out of the rotation hole 22 via the fitting / removal portion 29 side. The guide groove 34 for guiding the 29 side and preventing the passage on the rotating shaft portion 31 side is provided , the gradient of the tapered portion 30 on the rotating shaft portion 31 side is increased, and the taper portion 28 on the detachment preventing portion 27 side is increased . Since the gradient is small , the back mechanism plate 8 can be easily mounted on the front frame 3 side via a plurality of hinges 7 with a simple structure.
[0022]
According to the present invention , the receiving portion 18 is bent at the lower end portion of the fixed bracket 20 on the front frame 3 side, the hinge shaft 19 is fixed on the receiving portion 18, and the lower end of the movable bracket 23 on the back mechanism plate 8 side. Since the contact portion 21 is formed by bending the contact portion 21, and the rotation hole 22 and the guide groove 34 are provided in the contact portion 21, the receiving portion 18, the fixed bracket 20 side including the hinge shaft 19, and the rotation hole are provided. 22, the structure on the movable bracket 23 side including the abutting portion 21 with the guide groove 34 can be simplified, and the back mechanism plate 8 can be easily mounted on the front frame 3 side via a plurality of hinges 7.
According to the present invention , since the outer end side of the guide groove 34 is opened outwardly, the fitting / removal portion 29 or the small diameter shaft portion 29 can be easily guided through the guide groove 34.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a hinge portion of a ball game machine showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a hinge portion of a ball game machine showing an embodiment of the present invention.
FIG. 3 is an enlarged view of a hinge shaft portion showing an embodiment of the present invention.
FIG. 4 is an exploded perspective view of a hinge portion of a ball game machine showing an embodiment of the present invention.
FIG. 5 is an exploded longitudinal sectional view of a ball game machine showing an embodiment of the present invention.
FIG. 6 is an exploded cross-sectional view of a hinge part of a ball game machine showing an embodiment of the present invention.
FIG. 7 is an exploded longitudinal sectional view of a hinge portion of a ball game machine showing an embodiment of the present invention.
FIG. 8 is a perspective view showing a conventional ball game machine.
FIG. 9 is a rear view showing a conventional ball game machine.
FIG. 10 is an exploded vertical sectional view showing a conventional ball game machine.
[Explanation of sign]
3 Front frame 7 Hinge 8 Back mechanism plate 18 Receiving part 19 Hinge shaft 20 Fixed bracket 21 Abutting part 22 Rotating hole 23 Movable bracket 29 Small diameter shaft part (fitting / removal part)
30 Taper 31 Lower large diameter shaft (rotating shaft)
34 Guide groove

Claims

A receiving portion (18) fixed to the front frame (3) side, and fixed to the back mechanism plate (8) side, abuts on the receiving portion (18), and rotates around the axis of the hinge shaft (19). A pair of hinges (7) each having a free contact portion (21) are provided in the vertical direction, and the back mechanism plate (8) can be attached to and detached from the front frame (3) via the hinges (7). In the pivoted ball game machine, the vertical hinge shaft (19) of each hinge (7) is fixed to the receiving portion (18) upward or downward to the contact portion (21) , and each hinge shaft (19) A large-diameter rotation shaft portion (31) and a large-diameter disengagement prevention portion (27), a small-diameter fitting / removal portion (29) formed therebetween, a fitting / removal portion (29), and a rotation shaft A guide taper part (30) (28) formed between the part (31) and the disengagement prevention part (27) and having a small fitting / removal part (29) side is provided in the axial direction. The rotating shaft portion (31) with the contact portion (21) in contact with the receiving portion (18) on the receiving portion (18) or the contact portion (21) opposite to the hinge shaft (19). ) And a fitting / removing portion (29) for fitting the turning shaft portion (31) to and from the turning hole (22) via the fitting / removing portion (29) side. ) Side and a guide groove (34) for preventing the passage on the rotating shaft portion (31) side is provided , and the inclination of the tapered portion (30) on the rotating shaft portion (31) side is increased to prevent disengagement. A bullet ball game machine characterized in that the taper portion (28 ) on the side of the portion (27) has a smaller gradient .

The ball game machine according to claim 1, wherein the disengagement preventing portion (27) and the rotating shaft portion (31) are formed in a columnar shape having substantially the same diameter .

A receiving portion (18) is bent at the lower end of the fixing bracket (20 ) on the front frame (3) side, and the hinge shaft (19) is fixed on the receiving portion (18) , and the back mechanism plate (8) side An abutting portion (21) is formed by bending the lower end of the movable bracket (23) , and a rotating hole (22) and a guide groove (34) are provided in the abutting portion (21). The bullet ball game machine according to claim 1 or 2.

4. The ball game machine according to claim 1, wherein an outer end side of the guide groove (34) is opened outwardly .