JPS62112684U

JPS62112684U -

Info

Publication number: JPS62112684U
Application number: JP28986U
Authority: JP
Priority date: 1986-01-06
Filing date: 1986-01-06
Publication date: 1987-07-17

Description

[Brief explanation of drawings]

第１図及び第２図は、本考案の基本的原理を説
明するための図で、第１図は本考案の自転車フレ
ームの全体を示す構成図で、車輪が取付けられた
状態を一点鎖線で示している。第２図は、本考案
の自転車フレームの作動を説明する図である。第
３図〜第１０図は、本考案の実施例を説明するた
めの図で、第３図は本実施例のボトムブラケツト
部を示す一部断面図。第４図及び第５図は本実施
例のシートピン部を示す部分拡大図で、第４図は
その側面図、第５図は上方から見た断面図である
。第６図は本実施例のリングを示す構成図、第７
図は本実施例のハンガラグを示す断面図、第８図
は本実施例の止めナツトを示す斜視図、第９図は
本実施例の作動を示す説明図、第１０図は本考案
の他の実施例を示すためのボトムブラケツト部の
断面図の一部である。第１１図〜第１３図は、従
来の自転車フレームを説明するための図で、第１
１図はその構成図、第１２図はボトムブラケツト
部の部分拡大図、第１３図はボトムブラケツト部
の断面図である。第１４図及び第１５図は、従来
の折りたたみ機構を有する自転車フレームを説明
するための図で、第１４図はその自転車フレーム
の全体を示す構成図、第１５図はその自転車フレ
ームが折りたたまれた状態を示す側面図である。１……フロントフレーム、２……ボトムブラケ
ツト部、３……チエーンステー、１０……シート
ステー、４０……ヘツドチユーブ、４１……シー
トチユーブ、４２……ダウンチユーブ、４３……
トツプチユーブ、４４……前輪ホーク。 Figures 1 and 2 are diagrams for explaining the basic principle of the present invention. Figure 1 is a configuration diagram showing the entire bicycle frame of the present invention, and the state in which the wheels are attached is shown by the dashed line. It shows. FIG. 2 is a diagram illustrating the operation of the bicycle frame of the present invention. 3 to 10 are diagrams for explaining an embodiment of the present invention, and FIG. 3 is a partial sectional view showing the bottom bracket portion of the embodiment. 4 and 5 are partially enlarged views showing the seat pin portion of this embodiment, FIG. 4 being a side view thereof, and FIG. 5 being a sectional view seen from above. FIG. 6 is a configuration diagram showing the ring of this embodiment, and FIG.
The figure is a sectional view showing the hanger lug of this embodiment, FIG. 8 is a perspective view showing the locking nut of this embodiment, FIG. 9 is an explanatory diagram showing the operation of this embodiment, and FIG. 10 is another embodiment of the present invention. 1 is a part of a cross-sectional view of a bottom bracket portion for illustrating an embodiment. Figures 11 to 13 are diagrams for explaining conventional bicycle frames.
1 is a configuration diagram thereof, FIG. 12 is a partially enlarged view of the bottom bracket portion, and FIG. 13 is a sectional view of the bottom bracket portion. Figures 14 and 15 are diagrams for explaining a bicycle frame having a conventional folding mechanism. Figure 14 is a configuration diagram showing the entire bicycle frame, and Figure 15 is a diagram showing the bicycle frame when it is folded. It is a side view which shows a state. 1...Front frame, 2...Bottom bracket part, 3...Chain stay, 10...Seat stay, 40...Head tube, 41...Seat tube, 42...Down tube, 43...
Totsupuchiubu, 44...front wheel hawk.

Claims

[Scope of utility model registration request]

The front frame 1 is composed of a head tube 40, a seat tube 41, a down tube 42, and a top tube 43, and has a substantially rectangular shape. One end is rotatably attached to the head tube 40, and the other end connects the center of the front wheel from both sides. A front wheel hawk 44 consisting of two stages for support, a seat stay 10 consisting of two pieces, one end of which is removably attached to the front frame 1 and the other end supporting the center of the rear wheel from both sides; is a part of the seat stay 10 that supports the center of the rear wheel, and the other end is a chain stay 3 that is rotatably attached to the front frame 1 and a chain stay 3 that is rotatably attached to the front frame 1. A bicycle frame characterized in that it is provided with a bottom bracket part 2 provided in a part thereof and having a mechanism for rotatably joining the chain stay 3 to the front frame 1.