JPS61153861A - Tape loading mechanism of magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To load a tape to the small radius of curvature and to reduce the size of a magnetic recording and reproducing device by providing an auxiliary guide which engages a guide groove and moves together with a tape guide, and coupling the tape guide with the auxiliary guide through an elastic member. CONSTITUTION:The auxiliary guide 27 is formed in the front or the behind of the tape guide 38 formed on a slider 21 and coupled with the slider 21 through a spring 30, and one end of the projection 35 of the guide 27 is engaged with one end of a driving arm 36 to move the guide 27 according to the movement of the arm 36. The guides 27 and 38 are divided and fitted in the guide grooves of a base at one position, so the guide 27 moves through the movement of the arm 36 according to the guide groove, so that the guide 27 is movable to the radius of the curvature larger than the diameter of the projection 35 of the guide 27. Further, the guide 38 is coupled with the guide 27 by the spring 30, so the guide 38 receives spring force in the moving direction of the guide 27 and moves along the guide groove, so that it is movable to the radius of the curvature larger than the diameter of the projection 34 of the slider 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application J] This invention relates to an improvement in a tape loading mechanism of a magnetic recording/reproducing device.

[Prior Art] FIG. 4 is a plan view schematically showing a tape loading mechanism of a conventional magnetic recording/reproducing apparatus, and FIG. 5 is a side view thereof. First, a brief explanation of each reference number in the figure.
Specifically, 1 is a rotary cylinder, 2 is a magnetic tape, 3 is a slider, 4 is an inclined pin fixed to the slider 3, 5 is a guide roller inserted in the slider 3, 6 is a leaf spring, 7 is an arm stopper, 8 9 is a screw attached to the arm stopper 7, 9 is a fixing screw for the arm stopper 7, 10 is a guide groove of the slider 3 provided in the pace, 11 is a projection provided on the slider 3, and 17 is a tape guide. 12 is an arm for driving the slider 3; 1'3 is a bottle provided at one end of the drive arm 12; 14 is a hole provided in the slider 3 for inserting the pin 13; 15 is a ring;
16 is a spring. -Next, the relationship and operation of each component will be explained. The magnetic tape 2 is connected to the tape guide 17
is pulled out from the cassette and wound around the rotating cylinder 1. The tape guide 17 is 1. It has a guide roller 5 that is vertically attached to one end of the slider 3 and whose height can be adjusted in the vertical direction, and an inclined pin 4 that is attached at a fixed angle and distance from the guide roller 5. There is. Then, the protrusion 11 provided on the slider 3 fits into the guide groove 10 provided on the base, and the slider 3
is held down by a leaf spring 6 so that there is no wobbling in the vertical direction. Further, a hole 14 for inserting a bottle 13 is provided in a part of the lower m surface of the slider 3, and a pin 13 fixed to one end of the drive arm 12 is inserted into the hole 14. The lower end of the drive arm 12 is fixed to the ring 15 via a spring 16. When the cassette is set, the tape guide 17 is located inside the tape. During loading, the drive arm 12 moves due to the rotation of the ring 15, and the tape guide 17 moves in the direction of the rotary cylinder 1 with the magnetic tape hooked thereon. This movement path is defined by a guide groove 10 provided in the base.
In order to regulate the position of the slider 3 and prevent it from rotating, the protrusions 11 of the slider 3 are provided at two locations separated by a distance. That is, the protrusion 1 of the slider with respect to the guide groove 10
By contacting the slider 1 at two places, the slider 3 is prevented from rotating around one of the protrusions, and its position is also regulated. Also, the tape guide 17 can be set using the groove provided in the arm stopper 7.
7 is set, and the screw 8 is used to regulate the inclination of the tape guide 17. At the same time, a constant force is applied to the tape guide 17 by the elastic force of the spring 16 provided between the drive arm 12 and the ring 15. However, it is designed to be set stably even during repeated operations.

[Problems that JL Ming attempts to solve] The tape loading mechanism of conventional magnetic recording and reproducing devices is
As mentioned above, in the engagement between the slider and the guide groove, there are two protrusions spaced apart from each other, so the O-ding locus (the guide groove) has an inflection point with a small radius of curvature. (specified by), loading cannot be performed, which inevitably leads to an increase in the size of 1iIilI.

This invention was made to solve the above-mentioned problems, and it is possible to perform O-ding even on an O-ding locus that has an inflection point with a small radius of curvature.
The purpose is to obtain a tape loading mechanism that can contribute to the miniaturization of magnetic recording and reproducing devices.

[Means for solving the problem 1] The tape loading mechanism according to the present invention is provided with an auxiliary guide that engages with the guide groove and moves together with the tape guide, and the auxiliary guide and the tape guide are connected by an elastic member such as a spring. They are connected.

[Function] The tape loading mechanism of the magnetic recording/reproducing device of the present invention replaces the conventional tape guide with two engagement protrusions with the guide groove with an auxiliary guide that engages with the guide groove with one engagement protrusion each. By separating the guide and the original tape guide and engaging them through an elastic member such as a spring, the auxiliary guide can easily reach the inflection point even in a loading locus that has an inflection point with a small radius of curvature. The tape guide passes through the inflection point according to the elastic force of the chronic elastic member and the regulation of the guide groove.

[Embodiments of the invention] ・Hereafter,
An embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a side view showing a 91st embodiment of the present invention, and FIG. 2 is a plan view thereof. FIG. 3 is a plan view showing the state of the auxiliary guide and tape guide at the inflection point of the guide groove having a small radius of curvature in this embodiment. First, to briefly explain each reference number in the figure, 21 is a slider, 22 is an idle roller inserted into the slider 21, and 2 is an idle roller inserted into the slider 21.
3 is an inclined pin fixed to the slider 21, 24 is a leaf spring, 25 is a nut, 26 is a spring receiver provided on a part of the slider 21, 27 is an auxiliary guide, 28 is a leaf spring, and 29 is one of the auxiliary guides 27. 30 is a spring provided between the spring receivers 26 and 29, 31 is an arm stopper, 32 is an arm stopper 31 (provided with a screw, 33 is a screw for fixing the arm stopper 31,
34 is a protrusion provided on the slider 21, 35 is a protrusion provided on the auxiliary guide 27, 36 is a drive arm, 37 is a guide groove provided on the base, 38 is a tape guide, and 39 is provided on one end of the auxiliary guide 27. It is a raised protrusion.

Next, the relationship and operation of each component of this embodiment will be explained.

At one end of the slider 11, it is attached perpendicularly to the
and a guide roller 22 whose height can be adjusted in the vertical direction;
A tape guide 38 is formed having an inclined pin 23 attached at a constant angle and distance to the guide roller 22.

An auxiliary guide 17 is arranged in front of or in use of the tape guide 38, and the auxiliary guide 27 and the slider 21 are connected by a spring 40 attached therebetween.

Further, one end of the protrusion 35 of the auxiliary guide is engaged with one end of the drive arm 36, and as the drive arm 36 moves, the auxiliary guide 27 also moves. In addition, the guide groove 37 of the base
One projection 34, 35 is attached to each of the slider 21 and the auxiliary guide 27, which are fitted with the projections 34 and 35 and serve as guides during movement.

Furthermore, a stepped portion is formed in the projection 34 of the slider and the projection 35 of the auxiliary guide, and leaf springs 24 and 28 are provided to prevent rattling in the vertical direction.

During loading, when the auxiliary guide 27 moves along the guide groove 37 of the base due to the movement of the drive arm 36, the tape guide 38 connected by the spring 32 also moves along the guide groove 37 of the base.

Since the auxiliary guide 27 and the tape guide 38 are separated and each guide is fitted into the guide groove 37 of the base at one place, the auxiliary guide 27 is moved by the movement of the drive arm 36 to fit into the guide groove 37 of the base. Move according to. In this case, theoretically, the auxiliary guide can be moved with a radius of curvature larger than the diameter of the protrusion 35. Further, since the tape guide 38 is connected to the auxiliary guide 27 by a spring 30, it is constantly subjected to a spring force in the direction in which the auxiliary guide 27 moves, and like the auxiliary guide 27, it also moves according to the guide groove 37 of the base. , the slider can be moved if the radius of curvature is larger than the diameter of the protrusion 34 of the slider. Moreover, since the auxiliary guide 27 and the tape guide 38 are connected to each other via the spring 30, the auxiliary guide 27 and the tape guide 38 do not rotate in any direction. Also, when setting the tape guide 38, the auxiliary guide 27 is
Since the setting force is generated by entering the relief part provided in the stopper 31 and using the spring force of the spring 30, the setting method is the same as the conventional method, and a stable setting state can be obtained.

During unloading, the tape guide 38 is unloaded while being pushed by a protrusion 39 provided at one end of the auxiliary guide 27.

In the above embodiment, the auxiliary guide 27 and the tape guide 3
Although the spring 30 is shown as being provided between the springs 8 and 8, an elastic material (elastic body) may be used instead of the spring 30.

Further, even if a material having elasticity in the direction of extension and rigidity in the direction of compression is used instead of the spring 30, and the protrusion 39 of the auxiliary guide is omitted, the same effect as in the above embodiment can be obtained.

, [Effects of the Invention] 7. As is clear from the above description, the present invention provides the following excellent effects.

In other words, an auxiliary guide is provided in front of or in use of the tape guide, and the fitting with the guide groove of the base is performed by a protrusion provided at one location each on the tape guide and the auxiliary guide, and the tape guide and the auxiliary guide are Since the structure is configured such that an elastic body such as a spring is connected between the two, loading can be performed even with a loading trajectory having an inflection point with a small radius of curvature, increasing the degree of freedom in selecting the loading trajectory and reducing the size of the device. It can be done.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a tape loading mechanism of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. Plan view showing the state of the auxiliary guide, 4th
This figure is a plan view showing a tape loading mechanism of a conventional magnetic recording/reproducing apparatus, and FIG. 5 is a side view thereof. In the figure, 27 is an auxiliary guide, 30 is a spring as an elastic member, and 38 is a tape guide. Figure 3 2? Procedural Amendment (Voluntary) Date: Showa Year/Month/Tape Loading Mechanism 3 of Magnetic Grasping and Playback Device, Relationship with the Case of the Person Making the Amendment Patent Applicant Address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Mitsubishi Electric Co., Ltd. Representative: Hitoshi Katayama 4, Agent Address: 2-2-3-5 Marunouchi, Chiyoda-ku, Tokyo
, Column 6 of Detailed Explanation of the Invention in the Specification Subject to Amendment, Contents of Amendment (1) "At one end" in line 13 of page 7 of the specification is corrected to "at one end." (2) "Guide 17" on page 7, line 13 of the specification is corrected to "guide 27." (3) "Spring 40" on page 7, line 14 of the specification is corrected to "spring 30." (4) "Spring 32J" on page 8, line 6 of the specification
Correct to 0J. that's all

Claims (1)

[Claims] A tape loading mechanism of a magnetic recording and reproducing device that pulls out a magnetic tape from a cassette by a tape guide that engages with a guide groove and whose movement is regulated by the guide groove, and further winds the magnetic tape around a rotating cylinder. A tape loading mechanism for a magnetic recording and reproducing apparatus, characterized in that an auxiliary guide is provided which engages with the guide groove and moves together with the tape guide, and the auxiliary guide and the tape guide are connected by an elastic member.