JPS6228961A - Tape loading device for video tape recorder - Google Patents

Abstract

PURPOSE:To diverse the design of a guide groove by providing an articulated means which is coupled rotatably in every direction around a leg part implanted in a base member constituting a guide post assembly. CONSTITUTION:A plate body 4' is not coupled directly with the bottom part of the 1st part 31. A shaft 48, however, is provided to the lower end of the 2nd leg part 32 and the plate body 4' is fitted rotatably around the shaft 48. Therefore, the plate body 4' rotates horizontally as shown by an arrow F-G when necessary. Consequently, a rod member 47 is allowed to rotate up and down as shown by an arrow C-D and right and left as shown by an arrow F-G to the 2nd leg part 32 or a base member 3. Namely, the leg part 32, plate body 4', and rod member 47 constitute an articulated structure and even when the assembly is moved along the guide groove 2' in a complicate shape by applying force to the rod member 47, there is no unnecessary frictional force generated between the leg parts 31 and 32 and the side wall of the guide groove 2'.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement in a tape loading device for a video tape recorder that pulls out a magnetic tape from a cassette and automatically winds it around the outer periphery of a rotating drum.

(Prior Art) A conventional tape loading device of this type has a structure shown in FIGS. 4 and 5.

Reference numeral 1 denotes a rotating drum, which, as is well known, scans the wound tape in a helical manner by rotating a video head attached to its outer periphery. A predetermined guide groove 2 is provided around the rotating drum 1. The guide groove 2 has a foot portion 61 planted on the bottom surface of the base member B.
．． 32 is engaged, and the base member 3 can move along the guide groove 2 in the direction of arrow AB. The base member 3 includes the guide post 3 and the ball 3.
4 is installed. The guide post 3'5 and the pole 34 hook and pull out the tape from the cassette, and by moving along the guide groove 2, the tape is wound around the outer periphery of the rotating drum 1 at a predetermined angle. Foot part 6
1. The filter 2 extends through the kite groove 2, and a plate 4 is fixed to the lower side thereof by caulking. The plate body 4 is
- The cup 1 has a bent piece 45, and this bent piece 45 is attached to one part 12i+a of the rod member 47 by a caulking shaft 46.
is rotatably 11 (connected. Rod part J:) J4
At the other end of 7 (base part + A3 along groove 2)
A force is applied to move the object. Depending on the direction of the force applied to the rod member 47, it rotates about the caulking shaft 46, and the rod member becomes rotatable in the vertical direction, that is, in the direction of arrow C-D. Still caulking shaft 46
Since there is a slight gap between the ring and the hole provided on the rod side 47, some rotation in the left-right direction E-F is possible.

Therefore, the base member 6 can be moved in the direction of the arrow AB along the guide groove 2 having a smooth curve, thereby enabling a loading operation for winding the tape around the rotating drum 1.

(Problems to be Solved by the Invention) However, if the shape of the guide groove is smooth as shown in FIG. There are times when you have no choice but to do so. With the structure of the conventional guide post assembly described above, the direction of the force applied to the rod part 1f147 during tape loading/unloading operations becomes complicated for a guide groove with a complicated shape, which causes an unnatural effect on the base member B. There is an inconvenience in that the smooth movement of the guide post assembly is hindered due to the strong force exerted thereon.

The present invention aims to solve this problem.

(Meaning for Solving the Distortion Problem) The present invention provides a video recording medium in which a tape is pulled out from a cassette and wound around the outer circumference of a rotating drum by a guide post assembly that moves along a guide groove provided around the rotating drum. This relates to a tape loading device for a tape recorder, in which a rond part to which a tensile force is applied at one end is rotatable over a wide range in three dimensions relative to a base member that supports and carries a guide post at the other end. It is equipped with articulation means.

(Operation) According to the present invention, the tensile force applied to the guide post assembly for performing the tape loading operation is transmitted to the support base member of the guide post via the three-dimensionally rotationally movable multi-jointed means.

Therefore, even if the guide groove has a complicated shape, the guide post assembly can be smoothly moved along the guide groove.

(Example) Examples of the present invention will be described below with reference to the drawings. Although FIGS. 1 and 2 relate to an embodiment of the present invention, only the portions that do not correspond to the conventional structure shown in FIGS. 5 and 6 will be described.

In this case, the plate 4' is not directly connected to the bottom of the first leg 31. However, a shaft 48 is provided at the lower end of the second leg 32, and the plate 4' is rotatably attached to this shaft 48. Therefore, the plate 4' can be rotated horizontally by l+ji as required, that is, in the direction of the arrow FG.

With this, the rod part J', 4'47 is moved downward (arrow C-D) with respect to the second foot part 32 or the base member B.
and can be rotated left and right (arrows FG). That is, the foot part 2, the plate body 4', and the rod part 47 constitute a multi-joint structure.

Because of this structure, even if a force is applied to the rod portion +A'47 and the guide post assembly is moved along the complicatedly shaped guide groove 2' shown in FIG. No unnecessary frictional force or the like is generated between the guide groove 2' and the side wall of the guide groove 2'. Therefore, the guide post assembly can be moved sufficiently smoothly along the guide groove 2' having a complicated shape as shown in FIG.

(Effects of the Invention) As described above, according to the present invention, in order to move the guide post assembly, the rond member can be rotated downward and left and right at the foot of the guide post assembly, in other words, it can be freely moved over a wide range in three-dimensional space. have a degree. Since the multi-joint means are connected 1 to 7 and the force required for movement is applied through them, when mounting the tape around one rotation of the rotating drum, the guide grooves can be arranged in a more complicated shape than conventional ones. However, it is possible to move the guide post assembly along this lateral groove. As a result, the design of the tape loading path and the guide groove (
Enable childization.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of a guide post assembly of a tape loading device according to an embodiment of the invention, FIG. 2 is a front view showing the main parts of FIG. 1, and FIGS. Figure 5 is a plan view showing the side of the guide groove in which the guide post assembly interlocks, and Figure 5 is a perspective view of the conventional guide post assembly.
FIG. 6 is a front view showing a partial structure in FIG. 1. 1...Rotating Drano, 2...Guide Groove・
...Base part k 31.32...Foot part Rollo・
... Guide post 4 ... Plate body 47 ... Rondo part (A Fig. 2 = -M = -■

Claims (2)

[Claims] (1) In a tape loading device that pulls out a tape from a cassette and winds it around the outer periphery of the rotating drum using a guide post assembly that moves along a guide groove provided around the rotating drum, there is a The rod member to which a tensile force or the like is applied is provided with a multi-joint means at its other end that is rotatably connected to a foot part implanted in a base member constituting the guide post assembly. A tape loading device for a video tape recorder, characterized by: (2) The multi-joint means includes a plate body that is installed at the lower end of the base member and is rotatably attached to one of the legs that engages with the guide groove, and is attached to this plate body so that it can rotate up and down. 2. A loading device for a video tape recorder according to claim 1, further comprising a rod member.