Abstract: A mechanism chassis 1 comprises a polygonal flat plate portion 11 for arranging a plurality of mechanisms on a surface of thereof, and a plurality of side plate portions 12, 13, 14, 15 bent from the respective contour sides of the flat plate portion 11 toward a rear side of the flat plate portion 11. The flat plate portion 11 has a high-precision chassis region where those of the mechanisms of which a relatively high precision is required are to be arranged, and a high-strength chassis region where others of the mechanisms are to be arranged satisfactorily with a relatively low precision. The pair of side plate portions adjacent to each other at each corner included in the high-precision chassis region are separated from each other, and the pair of side plate portions adjacent to each other at each corner included in the high-strength chassis region are joined to each other.

Abstract: In a video tape recorder of the invention, a position adjusting mechanism for adjusting the X distance comprises a support plate 6 having a control head mounted thereon, a pivot pin 16 pivotally supporting an end of the support plate 6 on a chassis 1, a clamp piece 7 holding a portion 60 of the support plate 6 on the chassis 1 by clamping to give resistance to the pivotal movement of the support plate 6, and a screw 91 engaging another end of the support plate 6 with play for permitting the pivotal movement of the support plate 6 and fixing the end to the chassis 1 at an optional position within the range of the play. The clamp piece 7 comprises a receiving portion 71 for receiving the rear surface of the portion 60 of the support plate 6 and a holding portion 72 for holding the front surface of the support plate portion 60 under pressure. The portion 60 of the support plate 6 is inserted between the receiving portion 71 and the holding portion 72 by a press fit.

Abstract: A tape drawing-out mechanism for positioning a magnetic tape 91 as tensioned in a specified path of travel has a drive lever 6 having a cam follower 62 projecting therefrom, a tape drawing-out lever 5 having a tape drawing-out pin 51 for receiving the force of the drive lever 6 in a first step of a tape drawing-out movement, and an auxiliary lever 7 for receiving the force of the drive lever 6 in a second step of the tape drawing-out movement. The auxiliary lever 7 has a pin 71 projecting therefrom for pressing a face 54 provided on the tape drawing-out lever 5 to pivotally move the lever 5 to a tape drawing-out end position. The mechanism described precludes a great reaction from acting on the cam follower 62 and a cam groove 41 for giving a tape drawing-out drive force.

Abstract: A chassis is provided with a pair of leading guide blocks slidably fitted in respective guide slots for withdrawing a tape from a cassette, loading links for slidingly moving the respective guide blocks, and catchers arranged on the chassis at a loading completed position for the respective guide blocks to come into pressing contact with. Each of the loading links comprises a pivotal lever rotatably fitting around a pivot on the chassis and a link plate connected by a pivot pin to a free end of the pivotal lever and rotatably engaged at a forward end thereof with the guide block. The chassis is formed with apertures permitting insertion of the respective guide blocks therein, each covered with the catcher and each communicating with the guide slot.

Abstract: A front mechanism mounted on a chassis loads a cassette in place by causing a first projection and a second projection on each of opposite side portions of a cassette carrying tray to slide along respective guide grooves formed in each of side plates. Power is transmitted from a drive cam gear provided on the rear side of the chassis to the tray via a drive mechanism, intermediate gear and rotary gear. For loading, the tray initially starts to move as inclined with the first projection and the second projection sliding along slanting grooves and is thereafter lowered by sliding movement of the projection along a vertical groove and sliding movement of the projection along a descent groove while being corrected from the inclined position to a horizontal position. Upon completion of cassette loading, the intermediate gear and the rotary gear constitute a Geneva stop, and the drive cam gear disengages from the drive mechanism.

Abstract: A chassis is slidably provided with a circular-arc control slide bulging toward a rotary cylinder and having projections spaced apart from each other. Reel supports and a reel drive mechanism are arranged on the curving-in side of the slide. Disposed on the path of movement of the slide is a drive cam gear formed with cam grooves each extending from an outer peripheral opening toward its center. The slide is formed thereon with a toothed projection which meshes with the cam gear during a period after one of the projections is fitted in the corresponding cam groove and until the other projection is fitted in the corresponding cam groove.