JPH06111531A - Tape cassette - Google Patents

Abstract

PURPOSE:To further more simplify and miniaturize a constitution of the device objective for loading in the tape cassette housing a tape-like recording medium and being attachable/detachable for the specified device objective for loading. CONSTITUTION:Guide grooves 105, 104 are formed respectively on two opposing side surfaces 101A, 101B of the tape cassette 100, and the tape cassette 100 is held by using the guide grooves 105, 104. Thereby, the positioning accuracy of the tape cassette 100 is much more improved and also the device loading the tape cassette 100 can be further miniaturized. Also, a flangelike planar part 110 is formed on a part of the tape cassette 100, then the loading device of tape cassette is further more miniaturized by making so that a positioning device 50 for the loading device of tape cassette 100 is engaged with the planar part 110 for positioning.

Description

Detailed Description of the Invention 【table of contents】

The present invention will be described in the following order. Industrial Application Conventional Technology (FIGS. 20 to 22) Problem to be Solved by the Invention (FIGS. 20 to 22) Means for Solving the Problem (FIGS. 3 and 6) Action (FIGS. 3 and 6) Example (1) First example (FIGS. 1 to 4) (2) Second example (FIGS. 5 to 8) (3) Configuration of cassette attaching / detaching device (FIGS. 9 to 11) (4) Others Example (FIGS. 12 to 19) Effect of the invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette,
For example, it is suitable for application to a tape cassette loaded in a video tape recorder (VTR).

[0003]

2. Description of the Related Art Conventionally, in this type of tape cassette, as shown in FIG. 20, the tape cassette 3 is held by the holding plate 2A of the cassette holding member 2 when the tape cassette 3 is loaded into the VTR main body 1, and By pressing the upper surface of the tape cassette 3 with the rollers 4A and 4B of the pressing device 4, the tape cassette 3 is pressed against the holding plate 2A.

Further, the tip portion 2B of the holding plate 2A is bent upward, so that the tip portion 2B and the side guide plate 4C.
Thus, the tape cassette 3 is positioned so as not to move in the left-right direction.

As shown in FIG. 21, the tape cassette 3 is inserted into the cassette mounting apparatus having the above-described structure in the direction of arrow x. Here, as shown in FIG. 22, in the cassette mounting apparatus, the tape cassette 3
22 is formed in conformity with the outer shape of the tape cassette 3 so that the tape cassette 3 can be inserted only in the direction shown in FIG. Therefore, as shown in FIG. 22 (B), even if the tape cassette 3 is inserted in the reverse direction, the shape of the tape cassette 3 does not match and the tape cassette 3 cannot be inserted. Thus, the insertion direction of the tape cassette 3 is regulated by utilizing the asymmetrical outer shape of the tape cassette 3.

[0006]

By the way, in this kind of tape cassette 3, a lid 3A is provided so as to cover the magnetic tape, and this lid 3A is designed to be opened when loaded in the VTR 1. ing. Therefore, since the lid 3A is movable, rattling of the lid 3A with respect to the main body of the tape cassette 3 is likely to occur.

However, in the cassette holding member 2,
Since the outer shape (including the lid 3A) of the tape cassette 3 is positioned by the tip portion 2B of the holding plate 2A and the side guide plate 4C, the positioning accuracy is deteriorated due to rattling of the lid 3A. There was a problem.

Further, since the tape cassette 3 is surface-held by the holding plate 2A and the tape cassette 3 is pressed against the holding plate 2A by the pressing device 4, the thickness H of the pressing device 4 is reduced. However, there has been a problem that the structure becomes large and the number of parts increases, and the structure becomes complicated.

Furthermore, the insertion direction of the tape cassette 3 is regulated by utilizing the asymmetric outer shape of the tape cassette 3, so that when the user tries to insert the tape cassette 3 in the wrong direction, There was a problem that the lid 3A of the tape cassette 3 was damaged by excessive force applied thereto.

The present invention has been made in view of the above points, and it is an object of the present invention to propose a tape cassette which can further simplify and downsize the structure of the cassette mounting portion to be loaded.

[0011]

In order to solve such a problem, according to the present invention, in a tape cassette 100 for accommodating a tape-shaped recording medium and being attached to and detached from an apparatus 20 which is a predetermined object to be loaded, an upper side surface 101A and a lower surface Guide grooves 105 and 104 having different formation positions and different widths are provided in the insertion direction of the side surface 101B into the device 20, respectively.

In the present invention, the guide groove 104,
A tapered chamfered portion 10 for guiding at both ends of 105.
4A and 105A are formed.

According to the present invention, the tape cassette 100 is a tape cassette 100 that accommodates a tape-shaped recording medium and is attached to and detached from the device 20 to be loaded.
Is provided with a flange-shaped flat surface portion 110, and the flat surface portion 111 is pressed by the positioning device 50 of the device 20 to which the tape cassette 100 is loaded.

Further, in the present invention, the plane portion 111 is
The chamfered portion 112 having a tapered shape is formed at the corner portion.

Further, in the present invention, the outer shape of the flat surface portion 111 is formed within the outer shape of the tape cassette 100.

[0016]

Operation: The guide grooves 104 and 1 of the tape cassette 100
The tape cassette 100 can be held by engaging guide rails 21A and 21B of the device 20 for loading the tape cassette 100 with the tape cassette 05. An apparatus 2 for loading the tape cassette 100 on a flange-shaped flat surface portion 111 formed on the side surface of the tape cassette 100.
The tape cassette 100 can be positioned by engaging the positioning device 50 of 0 and pressing the flat surface portion 111.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

(1) First Embodiment In FIG. 1, reference numeral 100 denotes a bottom surface of a tape cassette as a whole, and a cassette body 103 is provided with a lid 102 for covering a magnetic tape. A guide groove 104 is formed in the lower half 101B in parallel to the side surface opposite to the side surface provided with the lid 102 (that is, in the inserting direction of the tape cassette 100).

FIG. 2 shows the upper surface side of the tape cassette 100, and the lid 1 is attached to the upper half 101A.
The guide groove 1 is parallel to the side surface opposite to the side surface on which 02 is provided (that is, the inserting direction of the tape cassette 100).
04 are formed.

As shown in FIG. 3, the guide grooves 104 and 105 are formed at different distances and different groove widths from the side surface 101C of the tape cassette 100. Therefore, as shown in FIG. 4, the guide grooves 105 and 1 are formed in the guide rails 21A and 21B of the stage 27 of the cassette mounting device.
The tape cassette 100 is inserted into the stage 27 by inserting the tape cassette 100 so that the tape cassette 04 is engaged.
Held in.

Tapers 104A and 105A for guiding the guide rails 21A and 21B are formed at both ends of the guide grooves 104 and 105, and the guide grooves 104 and 1 are inserted when the tape cassette 100 is inserted.
The guide rails 21A and 21B are easily engaged with 05.

With the above construction, the tape cassette 10
0 is cantilevered on the stage 27 via the guide grooves 105 and 104. In this case, the stage 27 need only have the shape in which the guide rails 21A and 21B are provided, and can be further downsized as compared with the conventional case formed so as to cover the entire tape cassette 100.

Further, since the tape cassette 100 is positioned by the guide grooves 104 and 105, compared with the conventional case where the tape cassette 100 is positioned by the outer shape including the lid of the tape cassette.
Positioning accuracy can be improved because a rattling lid is not used for positioning.

Further, since the forming positions and the forming widths of the guide grooves 104 and 105 are different from each other, the tape cassette 100 cannot be inserted upside down. This control means is a tape cassette 1
No load is applied to the 00 lid 102, so that the lid 102 can be prevented from being damaged.

According to the above construction, by guiding and holding the tape cassette 100 by the guide grooves 104 and 105, the positioning accuracy can be further improved and the device for mounting the tape cassette 100 can be downsized. be able to.

(2) Second Embodiment FIG. 5 shows a second embodiment of the tape cassette 100 according to the present invention, which is a side surface (that is, the insertion of the tape cassette 100) connected to the tips of the guide grooves 104 and 105 (FIG. 4). A positioning contact portion 110 formed of a flange-shaped flat portion is formed on the side surface in the direction.

As shown in FIG. 6, the positioning contact portion 110 has a contact surface 111 formed on the lower half 101B of the tape cassette 100 with a predetermined step. Further, as shown in FIG. 7 which is a cross-sectional view taken along the line AA of FIG. 5, a tapered inlet 112 is formed at the tip of the contact surface 111 of the positioning contact 110.

In the above structure, the positioning device 50 is engaged with the positioning contact portion 110 of the tape cassette 100, which is cantilevered by the guide rails 21A and 21B, as shown in FIG. By moving the tape cassette 100 in the vertical direction, the tape cassette 100 is positioned so as not to easily move in the vertical direction.

Therefore, compared with the conventional case in which a roller or the like is provided to press the tape cassette 100 in the direction of the arrow y, it is not necessary to provide a pressing device on the upper surface side of the tape cassette 100, and the tape cassette 100 can be provided accordingly. The mounting device can be downsized. Further, the positioning contact portion 110
By forming the tapered invoking portion 112 at the end, the tip end portion of the positioning device 50 can be easily attached to the positioning contact portion 11.
0 may be engaged.

According to the above construction, the positioning contact portion 1
By forming 10, the tape cassette 100
The mounting device for mounting can be further downsized.
Further, by forming the positioning contact portion 110 such that the outer shape of the tape cassette 100 does not change, the tape cassette 100 according to the present invention can be applied to the conventional cassette mounting device.
Can be attached.

(3) Structure of cassette attaching / detaching device FIGS. 9 to 11 show an attaching / detaching device for attaching / detaching the tape cassette 100 according to the present invention. That is, reference numeral 20 in FIG. 9 indicates a VTR cassette attaching / detaching device as a whole, and the tape cassette 100 is inserted or swept into the stage 27 from the insertion port 23. The stage 27 has guide grooves 1 formed on the upper and lower side surfaces of the tape cassette 100.
Guide rails 21A and 21 engaging with 05 and 104
B (FIG. 8) is provided and the guide rail 21A is provided.
And 21B, the tape cassette 100 is inserted into the stage 27. At this time, the tape cassette 2
2 is cantilevered by guide rails 21A and 21B provided on the stage 27.

A chassis 25 of the cassette attaching / detaching device 20 is fixed to a chassis (not shown) of a VTR, and a stage 27 is vertically moved in the chassis 25 in a direction indicated by an arrow a or in a direction opposite thereto. It is held in the state of getting.

Further, a slide plate 30 is held on the chassis 25 with the cam plate 29 interposed therebetween so as to be slidable in the direction indicated by the arrow b or in the opposite direction. That is, the guide protrusions 31 and 32 fixed to the chassis 25 are engaged with the guide holes 34 and 35 of the slide plate 30, and the slide plate 30 is moved so that the guide holes 34 and 35 move along the guide protrusions 31 and 32. It is designed to slide.

Guide protrusions 41 and 42 fixed to the stage 27 are engaged with L-shaped guide holes 37 and 38 formed in the slide plate 30.
And 38 are adapted to move along the guide protrusions 41 and 42. Here, the slide plate 30 has a contact portion 3
0A is formed so that the abutting portion 30A abuts on the end face 22A of the tape cassette 100 inserted from the insertion port 23.
When 0 is inserted, the abutting portion 30A moves in the direction of arrow b in response to this, whereby the slide plate 30 moves in the direction of arrow b.
Slide in the direction indicated by.

Accordingly, the tape cassette 100 is inserted into the insertion opening 23.
When the slide plate 30 slides in the direction of the arrow b in accordance with the inserting operation, when it is further inserted into the deepest portion (this is called the cassette rising position) from the state of being inserted from the horizontal region of the guide holes 37 and 38. 37A and 38A
Moves along the guide protrusions 41 and 42. At this time, the horizontal regions 37A and 38A of the guide holes 37 and 38
And the bent portion 37 at the intersection of the vertical areas 37B and 38B.
When C and 38C reach the positions of the guide protrusions 41 and 42, the sliding movement of the slide plate 30 in the direction of the arrow b is locked by the guide protrusions 41 and 42.

In this state, the guide protrusions 41 and 42 fixed to the stage 27 can move in the direction of arrow a along the vertical regions 37B and 38B of the guide holes 37 and 38 of the slide plate 30. In this state, the cam plate 29 has the guide hole 5 formed in the cam plate 29.
5 and 56 are guide protrusions 31 fixed to the chassis 25
While being guided by 32 and 32, it is slid in the direction of arrow b by the biasing force of the spring 40.

At this time, as the guide holes 43 and 44 formed obliquely in the cam plate 29 move in the direction of the arrow b, the guide projections 41 are formed along the guide holes 43 and 44.
By the movement of the guide protrusions 41 and 42, the guide protrusions 41 and 42 move the vertical regions 37B and 38B of the guide holes 37 and 38 of the slide plate 30 in the direction indicated by the arrow a.

Accordingly, with the movement of the guide protrusions 41 and 42, the stage 27 moves downward in the direction indicated by the arrow a, and the tape cassette 2 inserted in the stage 27 is moved.
2 is loaded in the lowered position (that is, the recording / reproducing position) together with the stage 27.

Here, as shown in FIG. 10, the first cam plate 29 and the second cam plate 60 are connected to each other via a connecting link 66, and the cam plate 29 is in the direction shown by the arrow b or this. When slid in the opposite direction, the cam plate 60 slides in the direction indicated by the arrow d or in the opposite direction. Accordingly, the stage 27 moves from the raised position to the lowered position, and accordingly the cam plates 29 and 60 slide in the directions shown by the arrows b and d.

FIG. 10 shows the state in which the tape cassette 22 is in the raised position from the cam plate 60 side.
The cam plate 60 has a sliding direction (arrow d).
(Direction), guide holes 62 and 63 are formed. Guide projections 71 and 72 fixed to the chassis 25 are engaged with the guide holes 62 and 63 to guide the sliding direction of the cam plate 60 (direction of arrow d).

A guide hole 74 is formed in the chassis 25 in the direction of arrow a, and by engaging a guide protrusion 73 fixed to the stage 27, the stage 27 moves up and down in the direction of arrow a along the guide hole 74. It is held in a movable state. Further, the cam plate 60 is formed with a guide hole 64 inclined with respect to the direction of the arrow a, and the guide projection 73
Are engaged.

Accordingly, when the cam plate 60 slides in the direction shown by the arrow d, the inclined guide hole 64 moves in parallel in the direction of the arrow d, so that the guide protrusion 73 engaged with the guide hole 64 is moved. According to the guide hole 25 of the chassis 25. Therefore, the stage 27 fixed to the guide protrusion 73 also descends accordingly.

Here, as shown in FIG. 10, when the tape cassette 100 is inserted from the insertion opening 23 to the deepest part, the tip of the lid 102 of the tape cassette 100 faces the claw 81 of the lid opening / closing member 80. Become. In this state, the tape cassette 100 moves down to the lowered position together with the stage 27 in accordance with the sliding movement of the cam plate 29 (FIG. 9). At this time, as shown in FIG. 11, the tape cassette 1
The lid 102 of 00 is in a state of being suspended by the claw 81 of the lid opening / closing member 80, and the lid 102 is in the open state.

Further, the cassette attaching / detaching device 20 is provided with a cassette positioning device 50 for pressing and positioning the tape cassette 100 in the downward direction (direction shown by arrow a in FIG. 1). That is, a cassette pressing member 52 having a U-shaped cross section is engaged with a protrusion 51 (FIG. 9) formed at the tip of the stage 27 so as to be rotatable about a predetermined range on the rotating shaft 27A, and the cassette pressing member 52 is pressed. Member 52
A torsion coil spring 53 is attached between the rotating front end portion 52B and the cam plate 60. A pressing portion 52A is formed so as to project from the cassette pressing member 52 toward the tape cassette 100, and the pressing portion 52A presses the tape cassette 22 in the direction indicated by the arrow a.

That is, the tape cassette 100 is inserted into the insertion port 2
The tape cassette 10 when it is inserted from 3 to the deepest part
The cassette pressing member 5 is placed at a position facing the contact surface 111 of 0.
The two pressing portions 52A face each other. In this state, as shown in FIG. 11, the tape cassette 100
Is lowered together with the stage 27, the cassette pressing member 5
By shortening the distance between the two rotating tip portions 52B and the cam plate 60, the coiled spring 53 provided between the rotating tip portion 52B and the cam plate 60 rotates the cassette pressing member 52 in the direction of the arrow a. Generates a biasing force that causes it.

As a result, the pressing portion 52A of the cassette pressing member 52 contacts the contact surface 111 of the tape cassette 100 and presses it in the direction of arrow a. Therefore, when the tape cassette 100 is lowered to the lowered position (FIG. 11), the tape cassette 100 is pressed in the direction of arrow a to easily move in the vertical direction (direction of arrow a or the opposite direction).
Positioned so that it does not move.

By thus positioning the tape cassette 100 by using the contact surface 111 of the positioning contact portion 110 of the tape cassette 100, the conventional cassette pressing device 4 (FIG. 20) is attached to the cassette attaching / detaching device 20. Is unnecessary, and thus the cassette attaching / detaching device 20 can be made thin.

The guide groove 10 of the tape cassette 100 is also used.
The guide rail 2 of the cassette attaching / detaching device 20 is attached to 4 and 105.
By engaging 1A and 21B, the tape cassette 100
By holding, the configuration of the stage 27 can be further downsized.

(4) Other Embodiments In the above first embodiment, the tape cassette 10 is used.
The case where the guide grooves 104 and 105 are formed in the vicinity of the side surface on the side opposite to the side on which the 0-shaped lid 102 is provided has been described, but the present invention is not limited to this and, for example, FIGS.
As shown in FIG. 7, even if the guide grooves 104 and 105 are formed in various other positions such as forming the guide grooves 104 and 105 in the vicinity of the lid 102, the same effect as the above case can be obtained.

In the first embodiment described above, the guide grooves 104 and 105 of the tape cassette 100 are formed from one side surface of the tape cassette 100 to the side surface opposite thereto, but the present invention is not limited to this. Not limited to this, for example, as shown in FIGS. 14 and 15, it may be formed by a predetermined length from the side surface of the tape cassette 100 on the insertion side.

Further, in the above-mentioned second embodiment, the case where the positioning contact portion 110 is formed in the vicinity of the lid 102 of the tape cassette 100 has been described, but the present invention is not limited to this and, for example, FIG. 16 and FIG. As shown in FIG. 17, the positioning contact portion 120 may be formed near the side surface opposite to the side surface on which the lid 102 is formed. In this case, the opening 1 is made in the lower half 101B of the tape cassette 100.
21 and the positioning device 50 is inserted.

Similarly to this, FIG. 18 and FIG.
As shown in, even if the positioning contact portion 130 having a shape in which the contact surface 131 is provided in the opening 132 of the lower half 101B is used, the same effect as the above case can be obtained.

[0053]

As described above, according to the present invention, the guide groove is formed on each of two opposite side surfaces of the tape cassette, and the tape cassette is held by using the guide groove. The positioning accuracy of the cassette can be further improved, and the device for loading the tape cassette can be further downsized. Further, a flange-shaped flat surface portion is formed on a part of the tape cassette, and the positioning device of the mounting device of the tape cassette is engaged with the flat surface portion to position the flat surface portion. It is possible to realize a tape cassette that can be further miniaturized.

[Brief description of drawings]

FIG. 1 is a bottom view showing a bottom surface of a tape cassette according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the upper surface of the tape cassette according to the first embodiment of the present invention.

FIG. 3 is a side view showing a side surface of the tape cassette according to the first embodiment of the present invention.

FIG. 4 is a side view showing a loading state of the tape cassette according to the first embodiment of the present invention.

FIG. 5 is a partial plan view showing a positioning contact portion of a tape cassette according to a second embodiment of the present invention.

FIG. 6 is a side view showing a positioning contact portion according to a second embodiment of the present invention.

FIG. 7 is a sectional view showing a positioning contact portion according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing a loading state of the tape cassette according to the second embodiment of the present invention.

FIG. 9 is a perspective view showing the configuration of a cassette attaching / detaching device for attaching / detaching the tape cassette according to the present invention.

FIG. 10 is a side view showing a stage rising state of the cassette attaching / detaching device.

FIG. 11 is a side view showing a stage descending state of the cassette attaching / detaching device and a tape cassette positioning state.

FIG. 12 is a plan view showing a guide groove of a tape cassette according to another embodiment.

FIG. 13 is a side view showing a guide groove of a tape cassette according to another embodiment.

FIG. 14 is a bottom view showing a guide groove of a tape cassette according to another embodiment.

FIG. 15 is a plan view showing a guide groove of a tape cassette according to another embodiment.

FIG. 16 is a partially enlarged view showing a positioning contact portion of a tape cassette according to another embodiment.

FIG. 17 is a side view showing a positioning contact portion of a tape cassette according to another embodiment.

FIG. 18 is a plan view showing a positioning contact portion of a tape cassette according to another embodiment.

FIG. 19 is a side view showing a positioning contact portion of a tape cassette according to another embodiment.

FIG. 20 is a side view showing a conventional example.

FIG. 21 is a perspective view showing a conventional example.

FIG. 22 is a perspective view for explaining a conventional problem.

[Explanation of symbols]

20: cassette attaching / detaching device, 21A, 21B ... guide rail, 50 ... positioning device, 100 ... tape cassette, 104, 105 ... guide groove, 110 ... positioning contact portion, 111 ... contact surface .

Claims (5)

[Claims] 1. A tape cassette for accommodating a tape-shaped recording medium, which is attached to and detached from a predetermined device to be loaded, wherein:
A tape cassette characterized in that it has guide grooves having different forming positions and different widths. 2. The tape cassette according to claim 1, wherein tapered chamfers for guiding are formed at both ends of the guide groove. 3. A tape cassette for accommodating a tape-shaped recording medium, which is attached to and detached from a predetermined device to be loaded, wherein the tape cassette is provided with a flange-shaped flat surface on a side surface thereof, and is a target to be loaded with the tape cassette. A tape cassette characterized in that the flat portion is held by a positioning device of the device. 4. The tape cassette according to claim 3, wherein the flat surface portion has a chamfered portion having a tapered shape at a corner portion. 5. The tape cassette according to claim 3, wherein the outer shape of the flat surface portion is formed within the outer shape of the tape cassette.