US 5,204,791 AGranted

Tape loading device of a video tape recorder having a linkage driven inclined auxiliary tape guide member

AssigneeMatsushita Electric Industrial Co., Ltd.

InventorsAkio Konishi, Koichiro Hirabayashi, Hideaki Yoshio, Shuzo Takeda, Nobuaki Takagi

Life of this patent

Estimating the term…

Loading patent…

Abstract

Disclosed is a tape loading device of a video tape recorder provided with an inclined video head cylinder and a capstan. The tape loading device includes a first guide member for feeding a tape on a horizontal path to the inclined video head cylinder, a second guide member for taking out the tape from the video head cylinder, and a third guide member for guiding the tape having passed the second guide member. The first, second and third guide members move along the video head cylinder and are in contact with the internal surface of the tape during the tape loading operation. The tape loading device further includes a fourth guide member for restoring the tape from an inclined path to a horizontal path during the tape loading operation by contacting the external surface of the tape, and an auxiliary inclined member for moving the tape inwardly during the tape loading operation so that the tape may be restored from an inclined path to a horizontal path. The auxiliary inclined member functions to make large the tape winding angle with respect to the third guide member. After the tape loading operation, a tape path is completed along the first guide member, the video head cylinder, the second, third and fourth members, and the capstan.

Claims2

Dependent claims

In a magnetic recording and/or reproducing apparatus having a chassis and a rotary magnetic head cylinder rotatably mounted on said chassis, a tape loading device comprising:

a plurality of guide members at least some of which are movable between a storage position and a recording and/or reproducing position for engaging and drawing a magnetic tape out of a tape cassette and for winding the magnetic tape around the magnetic head cylinder through a given angle therearound and together with the remainder of said guide members positioning the tape in a tape path along which the tape is to run during recording and/or reproducing;
a first link having a first end pivotaly mounted on said chassis;
a second link having a first end pivotally mounted on said chassis;
an arm member having a first end pivotally connected with a second end of said first link and an intermediate portion of said arm member being pivotally connected with a second end of said second link;
an auxiliary inclined guide member on a second end of said arm member;
and
a driving means connected to said at least some of said guide members for moving said at least some of said guide members in a drawing out operation from the storage position to the recording and/or reproducing position and further connected to one of said first and second links for driving said one of said first and second links in synchronization with said at least some of said guide members for moving said auxiliary inclined guide member into contact with the magnetic tape at least over a limited distance during the drawing out operation, and moving said auxiliary inclined guide member away from said tape path after said drawing out operation is completed.

4 more elements

A tape loading device of a magnetic recording and/or reproducing apparatus having a rotary magnetic head cylinder, said tape loading device comprising:

a tape guide post group for drawing a magnetic tape out of a tape cassette and winding a portion of the magnetic tape around the rotary magnetic head cylinder at a given angle and forming a magnetic tape transport path along which the magnetic tape travels from the tape cassette to the rotary magnetic head cylinder and from the rotary magnetic head cylinder to the tape cassette;
a portion of the magnetic tape transport path extending between a tape supply reel inside the tape cassette and the rotary magnetic head cylinder constituting an upstream tape path and a portion of the magnetic tape transport path extending between the rotary magnetic head cylinder and a tape take-up reel inside the tape cassette constituting a downstream tape path;
the magnetic tape having a center line in a width direction of the magnetic tape normal to the direction of transport of the magnetic tape;
said center line lying in horizontal reference plane constituted by a plane formed by the center line of the magnetic tape where the magnetic tape is wound around the tape supply reel and the tape take-up reel inside the tape cassette:
the tape transport path extending in a horizontal reference path when the tape center line lies on the horizontal reference plane and the plane of the magnetic tape is normal to the horizontal reference plane, and extending in an inclined path when in other than a horizontal reference path;
and
the magnetic tape having an external surface on one side thereof contacting the rotary magnetic head cylinder and an internal surface on the surface on the opposite side from the external surface;
said tape guide post group having:
only one upstream inclined tape guide post disposed along said upstream tape path at an angle other than normal to the direction of transport of the magnetic tape, said one upstream inclined tape guide post, after completion of a tape loading operation, contacting the internal surface of the magnetic tape and guiding the magnetic tape from a horizontal reference path portion of said upstream tape path extending from the tape supply reel in the tape cassette to said one upstream inclined tape guide post to an inclined reference path portion of said upstream tape path from said one upstream inclined tape post to the rotary magnetic head cylinder and then along an outer circumferential surface of the rotary magnetic head cylinder;
only one downstream inclined tape guide post disposed along said downstream tape path and at an angle other than normal to the direction of transport of the magnetic tape, said one downstream inclined tape guide post, after completion of a tape loading operation, contacting the external surface of the magnetic tape for restoring the magnetic tape from an inclined path portion of said downstream tape path extending from said rotary magnetic head cylinder to said one downstream inclined tape guide post to a horizontal reference path portion of said downstream tape path extending from said one downstream inclined tape guide post to the take-up reel in the tape cassette;
and
at least two vertical tape guide members normal to the direction of transport of the magnetic tape and positioned along said inclined path portion of said downstream tape path and contacting the inside surface of the magnetic tape.

9 more elements

Dependencies are inferred from the claim text.