Driving mechanism of camera curtain shutter
A driving mechanism and curtain technology, applied in the shutter, camera, optics and other directions, can solve the problems of poor uniformity, high quality and large volume, and achieve the effect of improving imaging quality, small quality and small volume
Inactive Publication Date: 2011-06-29
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0003] The purpose of the present invention is to propose an improved camera curtain shutter driving mechanism to overcome the above-mentioned defects such as poor uniformity, large mass, and large volume in the current aerial camera curtain shutter driving mechanism.
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[0009] The following embodiments are given in conjunction with the accompanying drawings to further describe the mechanism of the present invention in detail.
[0010] refer to figure 1 , a driving mechanism for a camera curtain shutter, comprising a micromotor 1 arranged at one end of a substrate 13, a curtain carriage 9 arranged at the middle of the substrate 13 through a guide rail 10; The shaft is a dynamic fit, a wire wheel (2) with a ratchet on its side and a swing lever 3 that is statically fitted with the shaft. The pre-tightening spring 5 on the 4 is hinged with a ratchet 7 with bellcranks, and the stop block 6 corresponding to the bellcranks of the ratchets 7 on the base plate 13 is fixed; One end of a steel wire 8 wound on the wire wheel 2 is fixedly connected on the wire wheel 2, and the other end is fixedly connected on an end of the described curtain carriage 9; one end of another steel wire 12 is fixedly connected on the curtain On the other end of curtain car...
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The invention relates to a driving mechanism of a shutter in a camera, in particular to a driving mechanism of a camera curtain shutter, which is suitable for the technical field of aviation. The driving mechanism of the camera curtain shutter comprises a curtain sliding frame, a thread wheel, a swinging rod, a pallet, a limited block, a tension spring and steel wires, wherein the curtain slidingframe is arranged in the middle of a substrate through a guide rail; the thread wheel is arranged on the output shaft of a micro motor and is movably matched with the output shaft of the micro motor,and a ratchet is arranged on the lateral surface of the thread wheel; the swinging rod is statically matched with the output shaft of the micro motor; a pallet is articulated through a pin shaft which is fixedly arranged on the swinging rod and a pre-tension spring which is sleeved on the pin shaft, and the pallet is provided with a crank; the limited block is fixedly arranged on the substrate and corresponds to the crank of the pallet; a tension spring is arranged at the other end of the substrate; one end of one steel wire which is wound on the thread wheel is fixedly connected with the thread wheel, and the other end of the steel wire is fixedly connected with one end of the curtain sliding frame; and one end of the other steel wire is fixedly connected with the other end of the curtain sliding frame, and the other end of the other steel wire is fixedly connected with the tension spring. The mechanism realizes the uniform speed of process motion and rapid backward motion, overcomesthe problem of response delay of the current mechanism, and effectively improves the imaging quality of the camera.
Description
technical field [0001] The invention relates to a driving mechanism of a shutter in a camera, in particular to a driving mechanism suitable for a curtain shutter in an aerial camera. Background technique [0002] In aerial reconnaissance camera shutters, in view of the working conditions such as speed-to-height ratio, the curtain shutter requires different degrees of uniform speed, linear progress and rapid return movement in a short period. The existing motor drive technology and mechanism are difficult to achieve the ideal state. It is usually implemented by traditional devices such as cam mechanism and crank slider mechanism. These approximate constant speed mechanisms are highly dependent on servo drive, and have defects such as poor uniformity, large mass, and large volume, which reduces the payload in the shutter relatively. Small. In order to solve these problems, a mechanism that can convert the rotary motion of the motor into a uniform linear reciprocating motion ...
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IPC IPC(8): G03B9/08
Inventor 李大伟金灿强
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI