JPS6055902B2 - Operation mechanism of cassette tape recorder - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an operating mechanism of a cassette tape recorder,
In particular, the present invention relates to a system in which the release of the operator and the opening of the cassette lid are made soft.

As is well known, each operator of a cassette tape recorder and the cassette lid that stores the cassette tape are normally biased by a spring or the like to the non-operating state and the open state. There are locking plates, locking claws, etc. that lock the door when it is opened and closed.

However, when the cassette lid is in the closed state or each of the above controls is in the operating state, if the above controls are not released or the cassette cover is subsequently opened, the stop control and the When the opening (eject) operator is operated, each operator and the cassette lid return almost instantaneously to the non-operating state and the open state due to the biasing force of the spring, which generates a fairly loud mechanical impact sound. The generation of this mechanical impact noise causes the following inconveniences. For example, when live recording a wild bird's voice, etc., when the recording operation ends and the recording operator is released by the automatic stop mechanism, the impact sound may be recorded on another recorder's tape recorder, or the impact sound may be recorded on another recorder's tape recorder. The sound causes wild birds to flee. Furthermore, when the tape ends and the playback operator is released during playback of music or the like, if the above-mentioned impact sound is generated, it gives a feeling of discomfort to the person listening to the above-mentioned music. The present invention has been made in consideration of the above circumstances, and provides an extremely good operating mechanism for a set tape recorder that allows the opening of the cassette lid and release of the operator to be performed quietly, and is simple in structure and easy to manufacture. The purpose is to

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In FIGS. 1a and 1b, a plurality of (three in the illustrated case) piano key-shaped operators 11, 1 are used to put the cassette tape recorder into a predetermined operational state, such as playback, recording, and fast forwarding.
2 and 13 are rotatably supported by a rotation shaft 14 inserted orthogonally through these operators 11, 12, and 13. This rotating shaft 14 is fixed, for example, to a casing 141 of the above-mentioned cassette tape recorder shown by a dashed line in the figure, and is arranged at one end in parallel with each of the above-mentioned operators 11, 12, 13, and is rotatable. A stop operation element 15 is supported on. One end of the operating elements 11, 12, 13 and the stop operating element 15 protrudes outward from a front panel 16 of the cassette tape recorder, which is indicated by a two-dot chain line in the figure and is approximately parallel to the rotating shaft 14. Further, the other end of each of the above-mentioned operators 11, 12, 13 has fan-shaped teeth portions 17, 18, 19, which are first engaging portions.
is formed. In addition, each of the above-mentioned operators 11, 12, 1
Reference numeral 3 is provided with a rotational biasing force by a spring (not shown) to return to the non-operating state, and when it is operated against this biasing force, it is locked by a locking plate (not shown). . Further, the same rotational biasing force as described above is applied to the stop operator 15, and when the respective operators 11, 12, 13 are in a state of being locked to the lock plate, this stop operator 15, the lock is released, and this stop operator is not locked to the lock plate. Further, this stop operation element 15 has a double action structure and also serves as an opening (ejection) operation element for a cassette lid 33, which will be described later. Here, the teeth 17, 18 of each of the operators 11, 12, 13,
19 includes gears 20, 21, 22 as second engaging portions that can freely mesh with these tooth portions 17, 1.8, 19, respectively.
These gears 20, 21, and 22 are provided substantially parallel to the rotating shaft 14 and coaxially and rotatably supported by the rotating shaft 23. A substantially arc-shaped plate 2 is attached to one end of the stop operator 15 corresponding to the rotating shaft 23.
One end of the plate spring 24 is fixed, and the other end of the plate spring 24 has a substantially inverted triangular shape from the front and has a protrusion 2 at the top thereof protruding substantially parallel to the bottom surface.
51, and is in contact with the four protrusions 251 of the switching member 25, which is rotatably supported by the rotation shaft 26 near the top. An air damper 29 having a plurality of plates 28 projecting perpendicularly from one plane of the disk body 27 is provided at one corner of the bottom surface of the switching member 25, and is rotatable at the center thereof. A gear 30 having a diameter smaller than the diameter of the disk body 27 is coaxially provided on the air damper 29 . Further, the rotating shaft 23 is inserted into the other corner of the bottom surface of the switching member 25, and the gear 31 provided at one end of the rotating shaft 23 and the gear 30 are configured to mesh at all times. . A gear 32 having a diameter smaller than that of the gear 31 is coaxially formed integrally with the gear 31. On the other hand, the front panel 16 of the cassette tape recorder has a set lid 3 which can be stored inside the front panel 16.
3 is provided.

The cassette lid 33 is integrated at its lower end with a cassette support member 34 provided parallel to the cassette lid 33, and is rotatably supported by the rotation shafts 3 and 5.
A fan-shaped toothed portion 36, which is a third engaging portion, is formed near this rotating shaft 35, and this toothed portion 36 is rotatable by a rotating shaft 37 fixed to the casing 141 of the cassette tape recorder. The gear 38 is always in mesh with the gear 38 supported by the gear 38. The gears 32 and 38 can mesh freely. Further, the cassette lid 33 is given a rotational biasing force by a spring (not shown) to try to open, and when it is closed against this biasing force, it is locked by a locking pawl (not shown). There are things to do. The operation of the operating mechanism of the cassette tape recorder configured as described above will be explained.

First, a cassette tape is interposed between the cassette lid 33 and the cassette support member 34, and the cassette lid 33 is closed. Assume, for example, that the operator operates the operator 13 to put the cassette tape recorder into a playback state. At this time, as shown in FIG. 1B, both the cassette lid 33 and the operator 13 are in a closed and operated state and are engaged with the lock pawl and the lock plate, resulting in a stable reproduction state. Assume that in the above state, the operator 13 is released and the stop operator 15 is rotated in the direction indicated by the arrow 1 in FIG. 1B in order to remove the cassette tape.

Then, as shown in FIG. 2, the leaf spring 24 moves in the direction indicated by the arrow 11. Along with this, the protrusion 251 of the switching member 251 rotates in the same direction, and the rotating shaft 23, the gears 20, 21, 22, 31, 32 supported by the rotating shaft 23, and the air damper 29 move in the direction indicated by arrow i. move integrally.
Then, the gear 22 meshes with the tooth portion 19 of the operator 13.
At this time, the other operators 11 and 12 are not operated in the direction shown by arrow 1, so the sides are horizontal. Therefore, the teeth 17, 18 of the other operators 11, 12 have other second
The gears 20 and 21 as the engaging portions do not mesh with each other. That is, the gear 22 meshes only with the operator 13 that is being operated. Furthermore, since the stop operator 15 has been operated, the locking plate is released from the operator 13, and the operator 1
3 rotates in the non-operating state, that is, in the direction shown by arrow 1v, by the rotational biasing force of the spring. At this time, operator 1
The biasing force that causes the controller 3 to return to its non-operating position is transmitted to the air damper 29 via the teeth 19 of the operator 13, the gears 22 and 31, and the gear 30.
It is buffered by rotation of 9. Therefore, the operator 13 returns slowly and quietly to its non-operating position, and no mechanical impact noise as described above is generated. Then, with the operation element 13 released and the reproduction operation stopped, the stop operation element 15 is further rotated in the direction shown by arrow 1 in FIG.

Then, as shown in FIG. 3, since the operator 13 is released first and the side surface is approximately horizontal, the teeth 19 of the operator 13
The gear 22 that was meshing with the operator now passes over the upper surface of the operator 13. Therefore, the switching member 25 is further connected to the leaf spring 2.
4 rotates in the direction shown by the arrow 111, and the tooth portion 36, which is the third engaging portion between the gear 32 and the cassette lid 33, engages the gear 3.
They are engaged through 8. Furthermore, as mentioned earlier, the stop operation element 15 also serves as an opening operation element for the cassette lid 33, so that the lock pawl is released from the cassette lid 33, and the cassette lid 33 is rotated by the spring. Due to the biasing force, it opens, ie, rotates in the direction shown by arrow v. At this time, the biasing force that tries to open the cassette lid 33 is caused by the teeth 36 of the cassette lid 33, the gears 32, 31
and is transmitted to the air damper 29 via the gear 30,
Buffering is achieved by rotating the air damper 29.

Therefore, the cassette lid 33 opens slowly and quietly, and no mechanical impact noise is generated as described above. Moreover, each operator 11,
12, 13 and the cassette lid 33 when they are unlocked, the structure is simple and economically advantageous.
Furthermore, due to the above-mentioned buffering effect, when the respective operators 11, 12, 13 and the cassette lid 33 are released, they are not damaged by the above-mentioned impact. Furthermore, each operator 11, 12, 1
3 and when the cassette lid 33 is closed, the air damper 29 is not engaged, so the operation feels good. FIG. 4 shows an embodiment of the operating mechanism of the set tape recorder as shown in the above embodiment. Note that this invention is not limited to the above embodiments. For example, the first to third engaging portions are not limited to gears, but may be idlers or the like. Further, an oil damper or the like may be used as the damper. Therefore, as described in detail above, the present invention provides an operating mechanism for a cassette tape recorder that allows the cassette lid to be opened and the operator to be released quietly, and that is simple in structure and easy to manufacture. I can do it.

[Brief explanation of the drawing]

1A and 1B are a front view and a side view, respectively, showing an embodiment of the operating mechanism of a cassette tape recorder according to the present invention, and FIGS. 2 and 3 are illustrations, respectively, of the operation of the same embodiment;
FIG. 4 is a perspective view showing an implementation example of the present invention. 11, 12, 13...Operator, 14...Rotation axis, 1
5...Stop operator, 16...Front panel, 17,1
8, 19... tooth portion, 20, 21, 22... gear, 2
3... Rotating shaft, 24... Leaf spring, 25... Switching member, 26... Rotating shaft, 27... Disc body, 28...
Plate body, 29...Eng.5A damper, 30, 31, 32
... Gear, 33 ... Cassette lid, 34 ... Cassette support member, 35 ... Rotating shaft, 36 ... Teeth, 37
...rotating shaft, 38...gear.

Claims (1)

[Claims] 1 A plurality of operators that bring the cassette tape recorder into a predetermined operating state, and a stop/open operator that has the function of canceling the operating state of each of these operators and also has the function of opening the cassette lid of the cassette tape recorder. In the operating mechanism of a cassette tape recorder, the operating mechanism includes a first engaging portion provided on each of the operating elements, and a state in which each of the operating elements is operated and non-operated in response to an operation of the stop/open operating element. a plurality of second engaging parts that are independently engageable and disengaged from the first engaging parts and rotatably provided on the same axis; and a damper that is connected to and driven by the second engaging parts. a third engaging portion provided on the cassette lid; and a third engaging portion provided on the cassette lid; An operating mechanism for a cassette tape recorder, comprising: an engagement mechanism that is connected to and driven by the third engagement section.