JPH0258471U

JPH0258471U -

Info

Publication number: JPH0258471U
Application number: JP13736388U
Authority: JP
Priority date: 1988-10-21
Filing date: 1988-10-21
Publication date: 1990-04-26

Description

[Brief explanation of the drawing]

図は本考案の実施例を示すもので、第１図は平
面図、第２図は同上の側面図、第３図は第１図の
Ａ―Ａ′線縦断側面図、第４図は第１図のＢ―Ｂ
′線指矢方向縦断面図、第５図は同上に使用する
安全カバーの平面図、第６図は第５図の側面図、
第７図は蓋板を開口する状態を示す縦断側面図、
第８図は支柱を直立使用する状態を示す縦断側面
図である。１……床面、２……螺子孔、３……口枠状の鍔
面板、４……蓋板、５……段部、６……係合溝、
７……鈎状突起、８……軸承突起、９……係止軸
、１０……受圧片、１１……挿入管、１２……球
、１３……スプリング、１４……栓、１５……断
面Ｌ状の掛止片、１６……制止壁、１７……支柱
、１８……空胴部、１９……パツキン、２０……
埋装管。 The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a side view of the same as above, Fig. 3 is a longitudinal cross-sectional side view taken along the line A-A' of Fig. 1, and Fig. 4 is a side view of the same. B-B in Figure 1
Figure 5 is a plan view of the safety cover used in the above, Figure 6 is a side view of Figure 5,
FIG. 7 is a longitudinal side view showing the state in which the lid plate is opened;
FIG. 8 is a longitudinal cross-sectional side view showing a state where the support is used upright. 1... Floor surface, 2... Screw hole, 3... Mouth frame-shaped flange plate, 4... Lid plate, 5... Step portion, 6... Engagement groove,
7... Hook-shaped projection, 8... Bearing projection, 9... Locking shaft, 10... Pressure receiving piece, 11... Insertion tube, 12... Ball, 13... Spring, 14... Plug, 15... Latching piece with L-shaped cross section, 16... restraining wall, 17... pillar, 18... cavity, 19... packing, 20...
Buried pipe.

Claims

[Scope of utility model registration request]

The lower surface of one end of the mouth frame-shaped flange plate to which the lid is removably fitted is located between the inner sides of the hook-shaped protrusions that have an open engagement groove at the other end. A bearing protrusion is provided vertically on the shaft, and a locking shaft is provided on the bearing protrusion that can be freely inserted into and retracted from the engagement groove of the hook-shaped projection, and fixed by pressing a pressure receiving piece provided vertically on the lower surface of the other end of the cover plate. A ball that is compressed by a spring is attached to the lower surface of the other end of the flange plate so that it faces the opening of the engagement groove of the hook-shaped projection and has a cross section L so that the pressure receiving piece is caught when the cover plate is vertically dropped. A floor opening/closing device for inserting the base of an exercise support column, which is constructed by hanging a hanging piece in the form of a hanging piece on the lower surface of one end of a flange plate.