초록 ▼

A sheet fixing device comprises an elongated support frame 1 having a narrow opening portion, a pressing frame 3 fitted in the elongated support frame 1 to hold a sheet 2 grippingly in cooperation with the elongated support frame, and an urging member 6 fitted in the pressing frame 3 to urge the pre

A sheet fixing device comprises an elongated support frame 1 having a narrow opening portion, a pressing frame 3 fitted in the elongated support frame 1 to hold a sheet 2 grippingly in cooperation with the elongated support frame, and an urging member 6 fitted in the pressing frame 3 to urge the pressing frame against an inner wall of the elongated support frame 1. The pressing frame 3 is prevented from being bent or warped.

대표청구항 ▼

1. A sheet fixing device comprising:an elongated support frame having a narrow opening portion, said elongated support frame comprising a horizontal bottom portion and side wall portions rising respectively from side ends of said bottom portion;a pressing frame fitted in said elongated support frame

1. A sheet fixing device comprising:an elongated support frame having a narrow opening portion, said elongated support frame comprising a horizontal bottom portion and side wall portions rising respectively from side ends of said bottom portion;a pressing frame fitted in said elongated support frame to hold a sheet grippingly in cooperation with the elongated support frame; andan urging member fitted in said pressing frame to urge the pressing frame against an inner wall of said elongated support frame,wherein said pressing frame comprises a central support plate, guide slots formed longitudinally in both side positions of said support plate, and a pair of right and left retaining frames having horizontal bottom portions fitted transversely slidably into said guide slots respectively. 2. A sheet fixing device comprising:an elongaated support frame ( 1 ) having a narrow opening portion, said elongated support frame comprising a horizontal bottom portion ( 1 a ) and a pair of side wall portions ( 1 b ) rising respectively from right and left sides of said bottom portion;a pressing frame ( 3 ) fitted in said elongated support frame to hold a sheet grippingly in cooperation with athe elongated support frame; andan urging member ( 6 ) fitted in said pressing flame to urge the pressing frame against right and left inner walls of said elongated support frame,wherein said pressing frame is composed of a pair of separate right and left retaining frames ( 10 ), each retaining frame comprises a horizontal bottom portions (A, 9 ) and a retaining piece (B) rising from one end of the horizontal bottom portions (A, 9 ) along the side wall portion ( 1 b ) of said elongated support frome ( 1 ) and each horizontal bottom portion (A, 9 ) of respective retaining frames ( 10 ) are located transversely slidably along an upper surface of the horizontal bottom portion ( 1 a ) of the elongated support frame (A). 3. A sheet fixing device comprising:an elongated support frame ( 1 ) defining a narrow opening portion, said elongated support frame including a middle portion ( 1 a ) and a pair of side wall portions ( 1 b ) rising respectively from opposite sides of said middle portion ( 1 a );a pressing frame ( 3 ) arranged in said elongated support frame ( 1 ) to hold a sheet ( 2 ) between said pressing frame 93 ) and said support frame ( 1 ), said pressing frame ( 3 ) including two retaining frames ( 10 ), each of said retaining frames ( 10 ) having a sliding portion (A, 9 ) adjacent said middle portion ( 1 ) of said support frame ( 1 ) and having a retaining piece (B) adjacent one of said side walls ( 1 b ), each said sliding portion (A, 9 ) being independently movable toward and away from said side walls ( 1 b );an urging member ( 6 ) arranged in said pressing flame to bias said pressing frame against said side walls of said elongated support frame.