JPH0612753A - Cassette mechanism for electronic equipment - Google Patents

Abstract

PURPOSE:To maintain a tape to the normal attitude without increasing components by receiving the insertion end of a cassette tape with an engaging part of an energizing spring for opening the cassette mechanism when the cassette mechanism is loaded on the upper part of an equipment. CONSTITUTION:The cassette tape CT is inserted to between a cassette cap 1 and left and right one pair of cassette housing guides 4. At the position of a little before the place where the insertion end arrives at a cassette tape stopper plate 6, the insertion end is received by the engaging part 21c of the cassette mechanism-open energizing spring 21 and guided to the stopper plate 6 in that state. Pressing force downward from a cassette tape pressing spring 5 is impressed on the CT and force downward due to its own weight is actuated on the CT. But, the force downward is received by the housing guide 4 and the energizing spring 21c and inclination is prevented. Then, the cassette mechanism A1 is closed against the energizing spring 21. At this time, since the cassette CT is maintained to the normal attitude, is loaded smoothly without being caught by a reel base 9, a capstan shaft 10, a cassette guide 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cassette mechanism in an electronic device such as a radio cassette tape recorder equipped with a compact disc player, which is constructed so that at least an audio cassette tape can be attached / detached for reproduction / recording. .

[0002]

2. Description of the Related Art A cassette mechanism is adapted to store and remove a cassette tape and to open and close a tape deck between a loaded state and a detached state.

A general cassette mechanism is constructed so that its closed posture is vertical. But in recent years,
Electronic devices equipped with a cassette mechanism on the top surface of the device have also been developed.

A conventional example of a cassette mechanism mounted on the upper surface of an electronic device is shown in FIGS. 4 and 5.

FIG. 4 is a perspective view of the cassette mechanism in the open posture, and FIG. 5 is a sectional view of the same posture. The one shown is a double cassette type.

The cassette mechanism A2 includes a cassette lid 1 and
In a state of facing the cassette lid portion 1, the side plate portion 2 extending substantially at right angles from the left and right ends of the cassette lid portion 1, the rotation support arm portion 3 extending the left and right side plate portions 2 to the back side, and the cassette lid portion 1. A cassette storage guide portion 4 extending at a right angle from each of the left and right side plate portions 2 and an integrally extended elastically deformable state from the cassette lid portion 1 side while facing the left and right cassette storage guide portions 4. A cassette tape stopper plate portion for supporting the cassette tape pressing spring portion 5 and the insertion side end portion of the cassette tape CT and extending at a right angle from the cassette lid portion 1 at both ends corresponding to the left and right cassette storage guide portions 4. 6 and 6. Reference numeral 7 denotes a rotation support shaft provided on the rotation support arm portion 3.

With the cassette mechanism A2 in the open position, the cassette tape CT is inserted between the cassette lid portion 1 and the pair of left and right cassette storage guide portions 4, and the cassette tape C is inserted.
The end portion of T is supported by the cassette tape stopper plate portion 6. When the insertion of the cassette tape CT into the cassette mechanism A2 is completed, the cassette mechanism A2 is closed and rotated around the rotation support shaft 7 against the cassette mechanism opening urging spring (not shown), and the cassette mechanism A2 is rotated.
Is locked to a lock part (not shown).

With the closing and rotation of the cassette mechanism A2, the cassette tape CT stored in the cassette mechanism A2 is loaded into the cassette mechanical section 8. That is, a predetermined portion is inserted into the reel base 9 and the capstan shaft 10 and is slidably guided by the cassette guide 11. By this loading, the cassette tape CT becomes ready for recording / reproducing. At this time, the cassette tape pressing spring portion 5 regulates the position of the cassette tape CT at a predetermined position in order to stabilize the recording / reproducing.

[0009]

However, when the cassette tape CT is stored in the cassette mechanism A2 in the open position, the cassette tape is pressed by the biasing force of the cassette tape pressing spring portion 5 as shown by the chain double-dashed line in FIG. The cassette tape CT may be tilted with respect to the mechanism A2 while deviating from the normal posture. Especially in the type equipped on the top surface of electronic equipment,
Since the cassette tape CT is tilted by its own weight, there is a strong tendency for the posture disorder to become more severe.

When the storage posture relative to the cassette mechanism A2 in the open posture is tilted in this way, when the cassette mechanism A2 is then closed and rotated, as shown in FIG. Reel stand 9
Abut the capstan shaft 10 or the cassette guide 11,
There was a risk that smooth loading would not be possible due to resistance.

In order to solve the problem of the inclination of the storage attitude of the cassette tape CT, a stopper plate portion 12 for the insertion end of the cassette tape CT is provided in the cassette tape stopper plate portion 6 as shown in FIG. Good. Since the upper and lower sides of the cassette tape CT are supported by the cassette storage guide portion 4 and the stopper plate portion 12, even if the biasing force of the cassette tape pressing spring portion 5 or the weight of the cassette tape CT is applied, the cassette tape CT is kept inside the cassette mechanism A2. You can keep a normal posture with.

However, such a stopper plate portion 1
Providing 2 increases the cost. The reason will be described below.

FIG. 8 shows a die removing structure when the cassette mechanism A2 is molded from plastic. The mold 13 is pulled upward, the mold 14 is pulled leftward, and the mold 15 is pulled downward. The reason why the die 15 cannot be pulled out to the left integrally with the die 14 is that the cassette tape pressing spring portion 5 is integrally formed. Since the cassette tape pressing spring portion 5 exists, the mold 15 can only be pulled out downward. Therefore, as shown by the chain double-dashed line, the stopper plate 12 cannot be integrally formed so as to be connected between the cassette tape stopper plate 6 and the rotation support arm 3. Stopper plate 1
It is necessary to manufacture 2 separately from the cassette mechanism A2 and to integrally bond between the cassette tape stopper plate portion 6 and the rotation support arm portion 3 of the molded cassette mechanism A2 later with an adhesive or the like.

In order to correct the posture of the cassette tape CT in the cassette mechanism A2 as described above, the stopper plate 12 having a separate structure is required, and the number of parts is increased.
Since the number of assembling steps increases, it has been a cause of increasing the cost.

The present invention was devised in view of such circumstances, and an object thereof is to prevent the cassette tape from tilting in the stored state without increasing the number of parts.

[0016]

A cassette mechanism of an electronic apparatus according to the present invention includes a cassette lid portion, side plate portions extending from both left and right ends of the cassette lid portion, and the side plate portions. A rotation support arm portion, a cassette storage guide portion extending from each of the side plate portions in a state of facing the cassette lid portion, and a cassette integrally provided from the cassette lid portion at each cassette storage guide portion. A cassette mechanism having a tape pressing spring portion, a cassette tape stopper plate portion for receiving and supporting an insertion end of a cassette tape on the back side thereof, and a cassette mechanism opening urging spring for urging the entire cassette mechanism in an open posture. , One end of the cassette mechanism opening urging spring is hooked on the side plate portion so as to face the cassette lid portion on the free end side of the cassette tape stopper plate portion. It is characterized in that you have.

[0017]

The stopper plate portion is not specially prepared and assembled as in the above-described solution, but the cassette mechanism opening biasing spring which is always provided for ejecting the cassette mechanism is used, and the latching position is set to the cassette position. The insertion end of the cassette tape can be received by this hooking portion of the opening biasing spring only by making it the free end side with respect to the tape stopper plate portion, and the cassette tape can be kept in a regular posture in the cassette mechanism.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cassette mechanism for electronic equipment according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view showing an open posture of a cassette mechanism A1 equipped on the upper surface of a double cassette type tape recorder with a CD player and a radio, for example.
Is a bottom view of the same, and FIG. 3 is a partially cutaway perspective view of an essential part.

In these figures, FIG.
The same reference numerals as in FIG. 5 indicate the same parts or the same parts in this embodiment. That is, 1 is a cassette lid portion, 2 is a side plate portion that extends at right angles from the left and right ends of the cassette lid portion 3, 3 is a rotation support arm portion that extends each side plate portion 2 to the back side, and 4 is a cassette lid portion. A cassette storage guide portion 5 which extends from each side plate portion 2 at a right angle to face 1 and an elastically deformable cassette 5 which integrally extends from the cassette lid portion 1 to face each cassette storage guide portion 4. A tape pressing spring portion, 6 is a cassette tape stopper plate portion that extends at a right angle from the cassette lid portion 1 at the back side of each cassette storage guide portion 4 and receives the insertion end of the cassette tape CT, and 7 is a rotation support arm portion 3. It is a rotation support shaft provided.

On the rotation support shaft 7 of the rotation support arm portion 3, the entire cassette mechanism A1 is biased to the open posture, and the cassette mechanism A1 is forcibly opened and rotated when the lock is released by the eject operation. The spirally wound portion 21a of the cassette mechanism opening biasing spring 21 configured by the spirally wound spring for fitting is fitted. Such a cassette mechanism opening biasing spring 2
1 is similar to the general one. The fixed portion 21b on one end side of the cassette mechanism opening biasing spring 21 is positioned on the fixing member 22 on the cassette mechanical portion 8 side, and the acting portion 21c on the other end side is a free end than the cassette tape stopper plate portion 6. The side plate 2 is hooked on the side facing the cassette lid 1. The latching portion (acting portion) 21c is a cassette tape C inserted between the cassette lid portion 1 and the pair of left and right cassette storage guide portions 4.
The insertion end of T is received against the biasing force of the cassette tape pressing spring portion 5 and the own weight of the cassette tape CT to prevent the cassette tape CT from inclining and to maintain the regular posture.

Next, the operation will be described. When an eject button (not shown) is pressed, the lock is released and the biasing force of the cassette mechanism opening biasing spring 21 is exerted. That is, the biasing force accumulated in the spirally wound portion 21a is transmitted from the hooking portion 21c to the side plate portion 2, and the weight of the entire cassette mechanism A1 (when the cassette tape CT is stored, the weight is added). It is pushed up against the rotating shaft 7, and is opened and rotated around the rotation support shaft 7.

The cassette tape CT is inserted and removed in the opened posture of the cassette mechanism A1, and the operation at the time of insertion is as follows. Insert the cassette tape CT into the cassette lid 1
And between the pair of left and right cassette storage guides 4. While the cassette tape CT is pushed by the left and right cassette tape pressing spring portions 5 during the insertion, it is supported by the cassette storage guide portion 4 and is therefore inserted as it is to the back. Slightly before the insertion end reaches the cassette tape stopper plate portion 6, the hooking portion 21c of the cassette mechanism opening biasing spring 21
Receives the insertion end and guides the insertion end to the cassette tape stopper plate portion 6 in that state.

A downward pressing force is applied to the cassette tape CT from the cassette tape pressing spring portion 5 and a downward force due to its own weight acts. However, a pair of left and right cassette storage guide portions 4 and a cassette mechanism opening biasing spring 21
The downward force is received by the hooking portion 21c and the inclination of the cassette tape CT is prevented, and the cassette tape CT is stored and held in a normal posture.

Then, the cassette mechanism A1 is operated to be closed against the urging force of the cassette mechanism opening urging spring 21. However, since the cassette tape CT was stored and held in the proper posture, the cassette tape CT was replaced by the cassette mechanism CT. The projecting portion of the portion 8, that is, the reel base 9, the capstan shaft 10, and the cassette guide 11 are not caught, and can be loaded smoothly.

In the loaded state of the cassette tape CT (closed posture of the cassette mechanism A1), the cassette tape CT and the cassette mechanism opening urging spring 21 are set so that the urging force of the cassette tape pressing spring portion 5 is effective. It is designed so that a small clearance is generated between the hooking portion 21c.

The present invention is particularly effective for the upper surface mounting type in which the cassette mechanism is horizontal in the closed posture, but may be applied to the type in which the cassette mechanism is vertical in the closed posture.

[0028]

As described above, according to the present invention, when the cassette mechanism is accommodated in the cassette mechanism, it is necessary to eject the cassette mechanism in order to receive the insertion end of the cassette tape and prevent its inclination. The biasing spring is used and the latching position with respect to the side plate is devised, and the cassette tape insertion end is received by the latching part. Therefore, the number of parts and the number of assembling steps are not increased, resulting in an increase in cost. Instead, the cassette tape can be stored in a regular posture. Then, when the cassette mechanism is closed and rotated, the cassette mechanism can be smoothly loaded without coming into contact with the projecting portions (the cassette guide, the capstan shaft, the reel base, etc.). The present invention is particularly suitable for an equipment upper surface equipment type in which an inclination due to its own weight acts.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an open posture of a cassette mechanism of an electronic device (double radio cassette player with a CD player) according to an embodiment of the present invention.

FIG. 2 is a bottom view of the cassette mechanism according to the embodiment.

FIG. 3 is a partially cutaway perspective view of a main part of the cassette mechanism of the embodiment.

FIG. 4 is a perspective view showing an open posture of a cassette mechanism according to a conventional example.

FIG. 5 is a cross-sectional view showing an open posture of a cassette mechanism according to a conventional example.

FIG. 6 is a sectional view showing an inconvenience that occurs when the cassette mechanism is closed and rotated in the conventional example.

FIG. 7 is a cross-sectional view showing a solution considered to eliminate the disadvantage of the conventional example.

FIG. 8 is a cross-sectional view showing how the cassette mechanism is molded when the above solution is used.

[Explanation of symbols]

 A1 cassette mechanism 1 cassette lid portion 2 side plate portion 3 rotation support arm portion 4 cassette storage guide portion 5 cassette tape pressing spring portion 6 cassette tape stopper plate portion 7 rotation support shaft 8 cassette mechanical portion 9 reel stand 10 capstan shaft 11 Cassette guide 21 Cassette mechanism opening urging spring 21c Cassette mechanism opening urging spring latching part

Claims (1)

[Claims] 1. A cassette lid portion, side plate portions extending from both left and right ends of the cassette lid portion, a rotation support arm portion extending from each of the side plate portions, and the cassette lid portion from each of the side plate portions. Cassette storage guide portion that extends in a state of facing each other, a cassette tape pressing spring portion integrally connected to the cassette lid portion at each cassette storage guide portion, and a cassette tape insertion end on the back side thereof. A cassette mechanism having a cassette tape stopper plate portion that receives and supports the cassette mechanism and a cassette mechanism opening biasing spring that biases the entire cassette mechanism in an open posture, wherein one end of the cassette mechanism opening biasing spring is the cassette tape stopper. A cassette mechanism for an electronic device, characterized in that the cassette mechanism is hooked on the side plate portion so as to face the cassette lid portion on the free end side of the plate portion.