JP3277392B2 - Recorder / reproducer for cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette recording / reproducing apparatus having a cassette holder for holding a cassette containing a recording medium such as a magnetic tape, and more particularly to a pop-up mechanism for a cover for covering a cassette. .

[0002]

2. Description of the Related Art Conventionally, a cassette recording / reproducing apparatus is generally provided with a cassette holder for holding a cassette at a predetermined position of the apparatus, and the cassette holder and other parts are stored in a case body. In order to prevent foreign matter and dust from being mixed, and to maintain a good appearance even when the cassette is not loaded, the loading opening for taking in and out the cassette is covered with a lid that can be opened and closed.

[0003] As a conventional mounting structure of the lid, for example, a structure using a stepped screw is known. A cassette holder is pivotally supported in the case body of such a conventional cassette recording / reproducing apparatus so as to be vertically swingable, and a lid is attached to the cassette holder with a stepped screw.
The lid has a fool hole smaller in diameter than the head of the stepped screw but larger in diameter than the diameter of the step, while the cassette holder has a screw hole into which the screw of the stepped screw is screwed. Is provided, and the stepped screw is penetrated from the outside of the lid and screwed into the cassette holder, so that only the clearance formed between the stepped portion of the stepped screw and the fool hole of the lid is provided. offset configured to be able to cover, thereby, port lid when opened
Up operation is ensured.

[0004]

However, in a conventional cassette recording / reproducing apparatus having such a structure,
In order to take the pop-up operation of the lid, a clearance is provided between the stupid hole of the lid and the step of the stepped screw, so there is play between the lid and the case body with the lid closed. In addition to the above, the pop-up amount is determined by the size of the clearance, so that there is a problem in that the lid is displaced due to the play and the pop-up amount varies widely. Further, since the clearance cannot be increased, a large pop-up amount cannot be obtained, and therefore, there is a problem that the cassette cannot be smoothly taken in and out.

The present invention, such has been made in view of the conventional problems, the lid port of for the cassette holder
An object of the present invention is to increase the opening angle due to the up- up operation and improve the cassette takeout property.

[0006]

The present invention SUMMARY OF] is to solve the problems such as described above, in order to achieve the above object, the case body
The chassis board provided in the
Hold the loaded cassette and turn it horizontally against the chassis board.
The cassette loading position and the cassette can be inserted and removed
Between the cassette insertion and removal position
Cassette holder to be mounted on the board
Formed at right angles to the mounting surface of the case body
At a certain angle to the back of the cassette holder
The leaf spring attached to the cassette holder and the
Lid to be attached and lid provided on the case body
And a lock mechanism for locking in a state .

The lid can be attached to the cassette holder via an elastic member. Further, a cut-and-raised portion may be provided on the cassette holder, and a lid may be attached to the cut-and-raised portion.

[0008]

According to the present invention, when the lid for covering the cassette is opened, the lid is resiliently biased with respect to the cassette holder, so that the lid can be popped up. It can be done smoothly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a cassette recording / reproducing apparatus to which the present invention is applied will be described below with reference to FIGS.

First, the configuration will be described. Reference numeral 1 shown in FIGS. 1 and 2 denotes a box body formed of a suitable material such as a synthetic resin or a steel plate into a box shape. On the upper surface of the case body 1, a recording medium such as a magnetic tape is stored. Cassette 2
A concave portion 3 is formed, the upper surface side of which is loaded with an opening. The concave portion 3 has a rectangular opening slightly larger than the cassette 2 to be used, and the bottom surface thereof has a fixing screw 1a.
The housing is closed by a chassis substrate 4 fixed to the case main body 1 by a fixing means such as the above, and a tape driving mechanism and a magnetic reproducing mechanism are installed on the chassis substrate 4.

The tape driving mechanism includes a hub driving mechanism having a hub driving shaft 5 into which the hub of the cassette 2 is fitted, a tape having a capstan 6 and a pinch roller 7 for feeding the tape at a constant speed. The hub drive shaft 5 includes a constant speed drive mechanism, these operation mechanisms, and other accessory mechanisms.
The capstan 6 protrudes toward the surface of the chassis substrate 4. The magnetic reproducing mechanism includes two reproducing heads 8a and 8b for reproducing from a magnetic tape as a recording medium.
And an amplifier for assisting the operation of the reproducing heads 8a and 8b. The reproducing heads 8a and 8b and the pinch roller 7 are attached to a head holder 9, and the head holder 9 is fixed to the cassette holder 10. . One reproducing head 8a is for right running, and the other reproducing head 8b is for left running. A pinch roller 7 is disposed between the two reproducing heads 8a and 8b, and is installed to face the capstan 6.

The cassette holder 10 inserts and holds the cassette 2 and holds the magnetic tape stored in the held cassette 2 at a predetermined position with respect to the reproducing heads 8a, 8b and the like. The cassette is moved up and down over a cassette loading position that stops in a horizontally laid state and a cassette insertion / removal position where the cassette 2 is raised and stopped away from the hub drive shaft 5 to allow the cassette 2 to be inserted / removed. . The cassette holder 10 has a main body 10 a extending in the tape running direction on the front upper surface side of the cassette 2.
And cassette supporting portions 10b, 1 formed by bending both side edges of the main body 10a downward into an L-shaped cross section.
0b, the main body 10a and the left and right support portions 1
Between 0b and 10b, there is formed an accommodating portion capable of inserting and holding the front portion of the cassette 2 so that it can be inserted and withdrawn.

On the inner side of both cassette supporting portions 10b, 10b of the cassette holder 10, legs 10c, 10d for pivotally supporting the cassette holder 10 on the chassis substrate 4 are provided from the main body 10a. It is bent downward, and the bearing portion 4 which is cut and raised upward is provided on the chassis substrate 4 corresponding to the leg portions 10c and 10d.
a, 4b are formed. A bearing hole is formed in each of the leg portions 10c and 10d. A pivot 4c is formed in one of the bearing portions 4a in accordance with the bearing holes, and a step portion is formed in the other bearing portion 4b. Stepped screw 1 having
A screw hole into which the one screw portion is screwed is formed. Then, with the pivot 4c rotatably fitted in the bearing hole of one leg 10c, the step is rotatably penetrated into the bearing hole of the other leg 10d, and the screw is screwed. By being screwed into the hole, the cassette holder 10 can be raised and lowered with respect to the chassis substrate 4.

Further, as shown in FIG. 4 and the like, a cassette supporting portion 10b of the main body 10a of the cassette holder 10 is provided.
An opening 10e is provided in the upper surface on the side, and the cassette holder 10 and the loaded cassette 2 are received by the reaction force from the lid 12 in the opening 10e.
A pressing spring 13 biasing to the side is disposed. Presser spring 1
Reference numeral 3 has a base end fixed to the main body 10a by fixing means such as a screw, and a distal end side thereof is formed to be curved upward, and an inner spring portion 13a is formed by cutting down the inside downward. . The inner spring portion 13a is provided for the loaded cassette 2.
Abuts on the upper surface of the cover 1 and the tip of the pressing spring 13 is
2, the cassette 2 is urged toward the chassis substrate 4 by the reaction force from the lid 12.

On the back surface of the cassette holder 10, as shown in FIGS. 1, 3 and the like, a leaf spring showing a specific example of an elongated elastic member reaching up to the vicinity of the two leg portions 10c and 10d. 14 are arranged with their longitudinal direction oriented in the lateral direction. At both ends in the longitudinal direction of the leaf spring 14, slits 15 extending in the width direction are provided at two places, and cut-and-raised portions 14a are formed between the slits 15, 15. The cut-and-raised portions 14a are formed. Are formed with screw holes 14b, respectively. In association with the screw holes 14b, the cassette holder 10 is formed with long holes 16 which are set to be longer in the vertical direction, that is, in the width direction of the leaf spring 14, respectively. Is secured at the tip of the screw portion of the mounting screw 17 for fixing the screw to the leaf spring 14.

Further, an idiot hole is provided outside the cut-and-raised portion 14a of the leaf spring 14, and a fixing screw 18 is penetrated into the idiot hole and screwed into the cassette holder 10, whereby
The leaf spring 14 is fixed to the cassette holder 10. Two types of positioning holes 14c and 14d for positioning the leaf spring 14 with respect to the cassette holder 10 are formed inside the cut-and-raised portion 14a of the leaf spring 14. One positioning hole 14 c has a circular shape, and the circular convex portion 1 formed on the cassette holder 10 is formed.
0f is engaged, and the other positioning hole 14d has a two-sided width, so that the circular protrusion 10f formed in the cassette holder 10 engaged with the hole 14d moves in the lateral direction. It is configured such that the leaf spring 14 can be slightly moved and adjusted in the lateral direction while securing it.

The lid 12 that covers the cassette 2 is attached to the leaf spring 14 having such a configuration through the cut-and-raised portion 14a. Like the case main body 1, the lid 12 is formed in a box shape by a suitable material such as a synthetic resin or a steel plate, and is provided with two mounting screws 17 penetrating through a fool hole 12a provided in a rear side plate. The lid 12 is a leaf spring 1
4 is fixed to the cut-and-raised portion 14a. As shown in FIGS. 6 and 7, the leaf spring 14 is fixed at a predetermined angle θ with respect to the back surface B of the cassette holder 10 perpendicular to the mounting surface A of the case body 1. For this reason, as shown in FIG. 7, the leaf spring 14 has the cut-and-raised portion 14 a inclined by the angle θ similarly to the other portions when the lid 12 is opened, but when the lid 12 is closed, As shown in FIG. 6, elastic deformation due to the movement of the lid 12 occurs only in the cut-and-raised portion 14a, and the cut-and-raised portion 14a is bent by the angle θ. At the time of bending, the lid 12 is given a pop-up operation by elastic bias due to the restoring force based on the elasticity stored in the leaf spring 14.

In FIG. 1 and the like, reference numeral 20 denotes a support link for supporting the open state of the lid 12, reference numeral 21 denotes a tape retainer for supporting a magnetic tape which is fitted into the reference hole of the cassette 2 and travels from the inside, and reference numeral 22 denotes a tape holder. And a guide post for positioning and holding the cassette 2 at a predetermined position. Also, 23
Is a lock arm that locks the open side of the lid 12 to the case body 1, swings in conjunction with the operation of the slide button 24, and engages with a stopper (not shown) provided on the lid 12 to By locking the lid 12 and releasing the engagement with the stopper, the lock of the lid 12 is released, whereby the opening operation of the lid by manual operation becomes possible. Further, 25 shown in FIGS. 6 and 7 is a jack such as an earphone.

Next, the operation will be described. When the lid 12 is opened to load the cassette 2 in the apparatus or to take out the loaded cassette, first, the slide button 24 is slid to release the engagement of the lock arm 23.

In this case, as shown in FIG. 6, when the lid 12 is closed, the lid 12 is fixed to the cut-and-raised portion 14a of the leaf spring 14, and the leaf spring 14 is
The cover 12 is fixed to the cassette holder 10 indirectly via a leaf spring 14. Further, the leaf spring 14 is set to be inclined at a predetermined angle θ so as to be inclined backward with respect to the cassette holder 10.
Is closed, the lid 12 is fixed to the cut-and-raised portion 14a.
Only the part is elastically deformed and curved forward. Therefore, the cut-and-raised portion 14a stores a spring force for returning to the original inclined state.

In this state, when the lock button 23 is disengaged by sliding the slide button 24 to open the lid 12, the spring force stored in the cut-and-raised portion 14a of the leaf spring 14 causes the spring shown in FIG. So that the raised and raised portion 1
4a is deformed rearward and returns to the original straight state. As a result, the lid 12 fixed to the leaf spring 14 moves in the same manner as the leaf spring 14, and the front part of the lid 12 is elastically biased more than the rear part, so that a so-called pop - up state is obtained. Therefore, as shown in FIG. 5, a large opening called a gap C can be generated between the cassette loading port at the front of the lid 12, that is, the upper edge of the case body 1 and the lower edge of the lid 12. . Therefore, the lid 12 can be easily opened by putting a finger into the gap C or the like.

Further, since the gap C is formed, the cassette 2 loaded in the case body 1 can be easily taken out. That is, a gap D is generated between the upper edge of the cassette 2 and the lower edge of the lid 12 by the pop-up operation of the cut-and-raised portion 14a of the leaf spring 14, so that a finger or the like is inserted into the gap D and the lid 12 is inserted. Can be easily pushed up, and therefore, the cassette 2 can be easily taken out.

When closing the lid 12, the support link 20
Is bent, and the lid 1 is pressed against the spring force of the leaf spring 14.
2 can be pushed down to the case body 1 side, and the lock arm 23 can be engaged with the stopper. In this case, since the resistance force generated when the lid 12 is pushed down is only the reaction force due to the spring force generated at the cut-and-raised portion 14a of the leaf spring 14, the closing operation of the lid 12 can be easily performed. When the lid 12 is closed, the pressing spring 13 is
2 and the inner spring portion 13a thereof abuts on the upper surface of the cassette 2. The spring force of the pressing spring 13 urges the lid 12 upward, while the reaction force thereof causes the cassette holder 10 and the cassette 2 to move upward. Of the cover 12 is removed by these urging forces, and the cassette 2 is pressed toward the chassis substrate 4 to be reliably positioned and held.

As described above, the present invention is not limited to the above embodiment. For example, a cassette holder may be provided with a cut-and-raised portion that is easily elastically deformed, and a lid may be attached to the cut-and-raised portion. Accordingly, the same effect as in the above embodiment can be obtained. In particular, in this case, since the cassette holder also serves as a leaf spring,
The use of separate and independent leaf springs as in the above embodiment can be eliminated, and therefore the number of parts and the number of assembly steps can be reduced.

Further, in the above-described embodiment, an example has been described in which a magnetic tape is applied as a recording medium accommodated in a cassette, but it goes without saying that other types of recording media such as a compact disk and a mini disk can be applied. Thus, the present invention can be variously modified without departing from the spirit thereof.

[0026]

As described in the foregoing, according to the cassette recording and reproducing apparatus of the present invention, because the mounted elastically bias the lid in the cassette holder, set to cover a certain pop-up amount without causing variations in the pop-up amount In addition, it is possible to provide a cassette recording / reproducing apparatus capable of securely closing the lid without causing backlash when the lid is closed. In addition, the pop-up amount of the lid can be increased by a simple structure, so that the effect of taking out the cassette smoothly and easily can be obtained.

[Brief description of the drawings]

FIG. 1 is a rear perspective view showing an embodiment of the present invention, with a lid opened.

FIG. 2 is a front perspective view showing a state in which a lid is opened and a part of which is omitted.

FIG. 3 is a rear view showing a part of the same section.

FIG. 4 is a plan view of the case body with the lid removed.

FIG. 5 is a side view for explaining an open / closed state of the lid.

FIG. 6 is an explanatory view showing a part of the closed state of the lid shown in FIG.

FIG. 7 is an explanatory view showing a part of the opened state of the lid shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case main body 2 Cassette 4 Chassis board 4a, 4b Bearing part 9 Head holder 10 Cassette holder 10a Main body part 10b Cassette support part 10c, 10d Leg part 12 Cover 13 Pressing spring 13a Inner spring part 14 Leaf spring (elastic member) 14a Cutting Raised part 16 Slotted hole 17 Mounting screw

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP 4-101992 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) G11B 33/02 502

Claims (1)

(57) [Claims] 1. A chassis substrate provided on a case body.
And holding the cassette containing the inserted recording medium,
Loading cassettes that fall horizontally to the chassis board
Position and cassette insertion / removal position that enables insertion / removal of the above cassette
It is attached to the chassis board so that it can
Cassette holder and a plurality of cut-and-raised portions are formed on the mounting surface of the case body.
At right angles to the back of the cassette holder.
Attach to the above-mentioned cassette holder at a fixed angle
A leaf spring, a lid attached to each of the cut-and-raised portions, and a lid provided on the case body to lock the lid in a closed state.
And a lock mechanism for the cassette.