JPS61292259A - Cassette recorder - Google Patents

Abstract

PURPOSE:To prevent deviation in position of a cassette by providing a cassette upper face pressing means to a position engaged with a recessed part of a tape cassette loaded by prescribed length at the upper face inside of a cassette loading guide means. CONSTITUTION:When the cassette 1 is loaded from an opening 13 of a cassette holder 8 while a turning cover 3 is taken as the head, the cassette main body is loaded while the lower face is slid on the lower face in the cassette holder by a cassette pressing spring 9. When prescribed length is loaded, the recessed part 2 of the cassette upper face is engaged with an engaging part 10 of the cassette pressing spring 9 and positioned and held. Since the cassette pressing spring 9 acts in the play direction at cassette loading and in the progressing direction at cassette ejection, the lock holding force at the loading state is large and ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette recorder used for audio, etc.

2. Description of the Related Art In recent years, cassette recorders have been widely used for audio, video, audio, etc. Particularly for audio applications, the technology of digital audio tape recorders has recently been developed, and various new cassettes with lids have been proposed.

Conventional audio tape cassettes, so-called compact cassettes, have an opening in which the tape is exposed and do not have a lid to cover this part. Therefore, since the spring force that biases the lid etc. does not act on the outside, the cassette transfer means such as a cassette holder can be extremely simple.Problems to be Solved by the InventionHowever, the front opening can be opened and closed. When holding a cassette with a spring bias force, such as a rotating lid that opens and closes the bottom opening, or a sliding lid that opens and closes the bottom opening, in the cassette holder with the lid open, the cassette must be held in place against the spring force. Moreover, even if a mechanism is provided inside the cassette to lock and hold these lids in the open position, the holding mechanism may be unreliable and the lock may be released during use. If this happens, the cassette may be misaligned due to its spring force, causing serious problems in setting the device into the device, winding up the tape, etc.

In view of the above problems, the present invention provides a cassette recorder that locks and holds a cassette inserted into a cassette holder at a predetermined position within the cassette holder.

Means for Solving the Problems In order to solve the above problems, the cassette recorder of the present invention includes a cassette insertion guide means for inserting and guiding a tape cassette having a recess at an arbitrary position on the top surface in the direction of its main plane. A cassette top surface pressing means is provided on the inner side of the top surface of the cassette insertion guide means so that its pressing position is at a position to engage with the recess of the tape cassette inserted by a predetermined amount.

Function The present invention can lock and hold the inserted cassette in a predetermined position with the above-described configuration, thereby preventing misalignment of the cassette in the cassette holder and various other troubles caused by this. can.

EMBODIMENT A cassette recorder according to an embodiment of the present invention will now be described with reference to the drawings.

FIG. 2 shows a top view of an embodiment of a tape cassette used in a cassette recorder according to an embodiment of the present invention. In Figure 2, 1 is the cassette body, 2 is the cassette 7)
It is a recess provided on the top surface and is symmetrical. Reference numeral 3 denotes a rotating lid that opens and closes the opening on the front surface of the cassette, and is always energized toward the closed position. FIG. 3 is a side view of the same, where 4 is a sliding lid that opens and closes the opening on the bottom of the cassette, and arrow A indicates the direction of movement when opening the sliding lid 4. The spring force is applied in the opposite direction of arrow A. It's working. FIG. 4 is a front view thereof, and numeral 6 indicates a notch provided in the rotating lid 3, through which a part of the front part of the sliding lid 4 is visible.

Reference numeral 6 also has a notch in which a locking protrusion 7 for locking and holding the sliding lid 4 in two open and closed positions is energized to protrude from the cassette body side through an elastic arm and engage.

FIG. 5 shows a side cross section of the cassette 7) holder part of a cassette recorder according to an embodiment of the present invention, where 8 is a cassette holder, 9 is a cassette push spring mounted on the inner upper surface of the cassette holder, and 10 is a The engagement portion 11 of the cassette push spring with the cassette recess 2 is a protrusion provided deep inside the lower surface of the cassette holder 8 and corresponds to the notch 5 of the inserted cassette rotating lid 3. Press a portion to move the sliding plate 4 to the open position. Reference numeral 12 denotes a bead-shaped projection similarly provided on the lower surface of the cassette holder 8, located at a position corresponding to the notch 6 of the inserted cassette rotating lid 3, which enters into the groove provided on the lower surface of the cassette body and slides. The locking protrusion 7 that locks and holds the movable lid 4 is pressed to release the lock. 13 is a cassette insertion opening of the cassette holder 8, and 14 is an escape hole for a tape drive shaft (not shown). Figure 1 is a side sectional view showing the cassette inserted into the cassette holder, with the sliding lid 4
is opened and the recess 2 and the engaging portion 10 of the cassette pusher spring 9 are shown engaged. FIG. 6 is a top view of a second embodiment of the cassette pressing means, in which 15 is a leaf spring;
is a roller pivotally supported at the tip of the leaf spring 15, and the roller 16
engages with the recess 2 on the top surface of the cassette body. FIG. 7 is a side view thereof.

Finally, the operation of the cassette recorder constructed as described above will be explained below with reference to FIGS. 1 and 5.

When the cassette is inserted through the opening 13 of the cassette holder 8 with the rotating lid 3 facing forward, the cassette main body is inserted while its lower surface slides on the inner lower surface of the cassette holder by the cassette pushing spring 9. Then, the unlocking bead 12 first enters the notch 6 and presses the locking protrusion 7 to release the sliding lid 4 from the closed position. As the cassette is further inserted, the protrusion 11 enters the notch 5 and comes into contact with the protrusion of the sliding lid 4, and the cassette body 1 is further inserted while the sliding lid 4 remains in that position. When the cassette is inserted by a predetermined amount, the recess 2 on the upper surface of the cassette engages with the engaging portion 1o of the cassette push spring 9.
and is held in position. In this state, the sliding lid 4 is again locked in the open position by the locking protrusion 7.

Since the cassette pushing spring 9 is designed to act in the escape direction when the cassette is inserted and in the biting direction with respect to the cassette ejection direction, the locking force in the inserted state can be made large and reliable.

When using rollers such as those shown in FIG. 6, rolling friction occurs, so the insertion is light, and when engaged, a sufficient click feeling can be obtained to provide a good feel.

Furthermore, if the recesses for locking are provided in symmetrical positions close to the left and right sides of the top surface of the cassette, even if the pressing force of the cassette push spring 9 is strong, the force will also be applied to the cassette side walls, and the cassette It does not cause warping or deformation, and the inserted cassette can be positioned with high precision.It is different from the conventional compact cassette type by using the cassette push spring, which was originally necessary for cassettes with such a sliding lid mechanism. This is also done on decks, etc. (Note: The cassette push spring only presses the cassette when the cassette is set in the predetermined playing position.) This can be done by simply deforming the cassette push spring a little.

Effects of the Invention As described above, the present invention provides a cassette insertion guide means for inserting and guiding a tape cassette having a recessed portion at an arbitrary position on the upper surface in the direction of its main plane, and a pressure force on the inner side of the upper surface of the cassette insertion guide means. When using a tape cassette with a lid that has a return force by providing a cassette upper surface pressing means provided at a position to engage with the recess of the tape cassette inserted a predetermined amount; Since it is possible to prevent the cassette from shifting in the cassette transfer means such as the cassette holder when the cassette is used in situations where the cassette is likely to shift within the cassette holder, it is possible to prevent various troubles caused by misalignment of the cassette. can.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a cassette inserted state of a cassette recorder according to an embodiment of the present invention, FIG. 2 is a top view of an embodiment of the tape cassette used in the present invention, and FIG. 3 is a side view thereof. 4 is a front view thereof, FIG. 5 is a sectional side view of the main part of a cassette recorder according to an embodiment of the present invention, FIG. 6 is a top view of a second embodiment of the cassette pressing means, and FIG. FIG. 1...Cassette body, 2...Recess, 4
...Sliding lid, 5...Notch, 6...
... Notch, 7 ... Locking protrusion, 9 ...
・Cassette push spring, 11...protrusion. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 7
figure

Claims (4)

[Claims] (1) A cassette insertion guide means for inserting and guiding a tape cassette having a concave portion at an arbitrary position on the upper surface in the direction of its main plane, and the pressing position is inserted a predetermined amount into the inner side of the upper surface of the cassette insertion guide means. A cassette recorder comprising cassette upper surface pressing means provided at a position to engage with the recess of the tape cassette. (2) The cassette according to claim 1, characterized in that the cassette upper surface pressing means is formed of an arm-shaped elastic body, and is arranged in an escape direction when the cassette is inserted and in a biting direction when the cassette is ejected. recorder. (3) The cassette recorder according to claim 1, wherein the cassette upper surface pressing means is formed of a roller supported by an elastic body. (4) The cassette recorder according to claim 1, wherein the cassette upper surface pressing means are symmetrically arranged near both left and right sides of the cassette insertion guide means.