JP2595952Y2 - Lid locking device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid locking device suitable for use in a cassette tape recorder or the like.

[0002]

2. Description of the Related Art Acoustic equipment such as a portable cassette tape recorder is provided with a lid 16 for preventing a recording medium such as a cassette tape from dropping out of a housing chamber 14 as shown in FIGS. I have. Generally this lid 16
The rear end is hinged to the rear cabinet 13 etc. of the equipment.
It can be opened and closed by being combined with. Further, a locking device 40 including a locking claw 41 provided on the rear cabinet 13 and the like and a lock piece 42 provided on the lid 16 is provided so as to prevent the lid 16 once closed from being opened carelessly. Often.

There is a type of such a lock device 40 that locks only one side of the lid 16 as shown in FIG.
However, in this type, if the lid 16 is pulled or the lid 16 is distorted, the unlocked side may float. In addition, as shown in FIG. 11, there is a type in which the locking device 40 is provided at the center of the lid 16, but even if this type is better than the above-mentioned type, if a large force is applied to the corner of the lid 16, it will still float. There is a possibility that it will.

In order to solve such a problem, two locking claws 41 oriented in the same direction are integrated with a slider 43 as shown in FIG. A type that can be hooked or removed from the lock piece 42 has been devised.

[0005]

However, in any of the above-described embodiments, when a force is applied in the direction of the arrow in FIG.
There was a possibility that the lid 16 was shifted sideways and opened carelessly. For example, in the lock device 40 of the type in which the two lock claws 41 shown in FIG. 12 are integrated, even if there are a plurality of lock claws 41, they face in the same direction.
6, the locking piece 42 provided on the lid 16 is disengaged from the locking claw 41, and the lid 16
Sometimes opened carelessly.

In the locking device shown in FIG. 12, even if the lid 16 is deformed or inclined with respect to the rear cabinet 13, the movement of one of the locking claws 41 is hindered. There was a problem that both were not locked.

The present invention has solved the above-mentioned problem, and it is possible to restrict the inadvertent opening of the lid even if the lid is displaced laterally or has a defect such as deformation or inclination. It is an object to provide a possible locking device.

[0008]

In order to solve the above-mentioned problems, according to the present invention, when the lid of the housing is closed, a pair of locking means arranged to lock the lid are independent of each other. Release means for simultaneously releasing the pair of lock means when the lid is opened is connected to the pair of lock means, and the release means is configured to be connected to the pair of lock means and the release means. The connecting portion is provided with a play gap.

[0009]

As shown in FIG. 2, in the lock device 20, the two opposing claws 21b are pushed by the torsion spring 32 and
The projection 30b of the receiving member 30 provided in the lock is locked. A pair of lock portions 21 having claws 21b are connected to the rotating plate 26 via two links 28. This allows
When the rotating plate 26 is rotated clockwise, as shown in FIG. 4, both claws 21b rotate in directions opposite to each other and simultaneously come off the projections 30b of the lid 16, so that the lid 16 can be opened.

Since the play space S is provided at the connecting portion between the lock portion 21 and the link 28, the individual claws 21b can freely move independently by the play space S. Therefore, if a large lateral force is applied to the lid 16, one of the claws 21b comes off the projection 30b or the other of the one
Even if b moves, the other claw 21b remains locked to the projection 30b, so that the lid 16 does not open carelessly. Even if the lid 16 cannot be locked as shown by a broken line in FIG.
1b is not affected by this, so that the locked state can be maintained.

If one of the locks is unlocked or unlocked, the lid 16 can be easily locked by pushing down the unlocked side of the lid 16.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a lid locking device according to the present invention;

FIG. 1 shows the structure of a portable cassette tape recorder 10 to which the lock device according to the present invention is applied.
The cassette tape recorder 10 is a so-called headphone stereo capable of reading recorded information on a cassette tape and listening to the information with headphones (not shown). The cassette tape is stored in a rear cabinet 13 which is a housing of the cassette tape recorder 10.
Is housed in the accommodation room 14 formed inside the inside. Containment room 1
In step 4, a cassette tape reproducing process and a winding process are performed.

A cover 16 for opening and closing the accommodation room 14 is attached to the rear cabinet 13. The lid 16 is in the shape of a rectangular plate, and a window 17 made of a transparent material is provided in the center of the lid 16 for checking the condition of the cassette tape. The rear end 16a of the lid 16 is
The lid 16 can be turned up and down around the hinge 50 to open and close the accommodation chamber 14 as shown by an arrow A in the figure.

The lock device 20 according to the present invention includes the lid 1
6 is arranged inside the front end 13b of the rear cabinet 13 to lock the front end 16b. The locking device 20 locks the front end 16b of the lid 16 to prevent the lid 16 from being opened carelessly when the lid 16 is closed.

FIG. 2 shows the configuration of the lock device 20 as viewed from the direction of arrow Z in FIG. The lock device 20 is provided on a rectangular plate-shaped chassis 12 fixed to the inner surface of the rear cabinet 13. The lock device 20 includes the above-described lock portion 21 and a link mechanism 24 for interlocking the two lock portions 21. FIG. 2 shows the lock unit 2 of the lock device 20.
1 shows a state in which the lid 16 is locked, and the link mechanism 24 is used to release the lock. The link mechanism 24 includes a pair of links 28 for driving the respective lock portions 21 to rotate, and a rotating plate 26 for slidingly moving both the links 28.

The rotating plate 26 is attached to the chassis 12 so as to be rotatable about a central shaft 26a. Pins 25 are fixed to the rotating plate 26 at two points symmetrical with respect to the central axis 26a, and links 28 are attached to the pins 25 so as to be rotatable about the pins 25, respectively. At the end of the link 28 opposite to the pin 25, a lock 2
A long hole 28a used for connection with the first hole 1 is formed.

As will be described later, by rotating the rotary plate 26 clockwise, the lock of the lock portion 21 to the lid 16 is released. In order to apply this rotational force to the rotating plate 26, a lid-opening slider 23 (shown by a virtual line) is arranged outside the front end 13b of the rear cabinet 13. A locking portion 23 a having an inverted U-shaped cross section is formed on the lid slider 23. The upper pin 25 of the above-mentioned pins 25 fixed to the rotating plate 26 is fitted inside the locking portion 23a.

Therefore, if the lid-opening slider 23 is slid rightward in the figure, the upper pin 25 is pushed by the locking portion 23a, and the rotating plate 26 rotates clockwise about the central axis 26a. Then, both links 28 are drawn inward. During this sliding, the pin 25 moves up and down along the side wall of the inverted U-shaped engaging portion 23a so as not to hinder the rotation of the rotating plate 26.

As shown in FIG. 1, the open slider 23 is
Front end 13 of rear cabinet 13 for operation from outside
b. Here, a guide groove 27 is formed.
Can slide left and right along the line. Normally, the lid-opening slider 23 is at the left end of the guide groove 27, but when releasing the lock, the lid-opening slider 23 is slid to the right.

Now, each lock portion 21 is formed vertically long,
The claw 21b protrudes from the upper part in the lateral direction at an acute angle, and is in contact with the projection 30b formed on the holder 30 of the lid 16. The claws 21b of the two lock portions 21 are arranged to face each other. The receiving member 30 is integrally formed with a thin plate-shaped fixing portion 30a which is fixed by being applied to the front end portion 16b, and a projection 30b with which the claw 21b contacts. Protrusion 30
b protrudes from the fixed portion 30a toward the back, and
It is formed so as to be substantially horizontal when the is closed.

The center of the lock portion 21 is rotatably mounted on a center shaft 21a fixed to the chassis 12. Then, by rotating the lock portion 21, the claw 21 b can be removed from the projection 30 b of the lid 16. Further, a pin 29 is fixed to a lower portion of the lock portion 21,
This pin 29 is inserted into the long hole 28a of the link 28. Since there is a play space S between the long hole 28a and the pin 29,
The link 28 and the lock portion 21 are relatively freely movable by the clearance S.

Further, a coiled torsion spring 32 is wound around the central shaft 21a of the lock portion 21 in order to bias the claw 21b toward the protrusion 30b. The upper end 32a of the torsion spring 32 is provided on the support plate 3 protruding from the lock portion 21.
4, and the lower end 32 b is hooked on a support plate 36 protruding from the chassis 12.

As a result, the torsion spring 32 applies a rotational force F in the direction indicated by the arrow in the drawing to the lock portion 21, so that the pin 29 inserted into the elongated hole 28a pulls the link 28 outward. During the rotation of the lock portion 21, the protrusion 21 c on the side surface of the lock portion 21 is
By contacting the second support plate 36, the rotation of the claw 21b can be restricted so as not to be excessive. Also in this state, since there is a play space S between the elongated hole 28a of the link 28 and the pin 29, each claw 21b can be opened individually.

As shown in FIG. 3, the nail 21b is
Is located on the inner side (right side in FIG. 3) of the center O of the center shaft 21a which is the rotation center of the lock portion 21.
Due to the rotational force F of the torsion spring 32, the claw 21b is
In addition to abutting on the protrusion 30b, the protrusion 30b is pressed down. Therefore, even if the lid 16 is tilted or deformed due to a dimensional error of the parts, the lid 16 is not affected.
Can be brought into close contact with the rear cabinet 13.

Further, since the inclined surface 30d inclined outward is formed on the upper surface of the projection 30b, the claw 21b can push a lower position as compared with the case where it is formed in a flat shape. Therefore, the rotational force F of the spring is transmitted downward without waste. However, if the position where the projection 30b is formed is lowered, the slope 30d is not formed, and the projection 3b is formed.
Even if the upper surface of Ob is flat, the same effect as described above can be obtained.

Next, a method of opening the lid 16 will be described with reference to FIGS. As shown in FIG. 4, when the lid-opening slider 23 is moved rightward against the urging force of the torsion spring 32, both the links 28, 28 are drawn inward. Is the rotating shaft 21
It rotates in the opposite direction about a. Along with this, the two claws 21b gradually come off from the projection 30b of the lid 16 in synchronization.

As shown in FIG. 5, when the lid-opening slider 23 is further advanced to the right, the claw 21b is completely disengaged from the projection 30b, so that the lid 16 can be pushed up and opened in the direction shown by the arrow A.

The process of closing the lid 16 will be described with reference to FIG. The upper surface of the claw 21b is formed with a steep inward slope. Also, a slope 30c similar to the claw 21b is formed on the surface of the protrusion 30b facing the lock portion 21. For this reason, when the lid 16 is pressed from above as shown by the arrow B, the claws 21b are pushed outward by the projections 30b, and thereafter, as shown in FIG. .

If the cover 16 is distorted or inclined with respect to the rear cabinet 13, the cover 16
With reference to FIG. 7, a description will be given of a process performed when one of the claws 21b cannot be locked simply by closing the. The broken line in the figure shows a case where only the right side is locked by the distortion of the lid 16 and the left side floats.

In this case, the left projection 30b pushes the claw 21b open to stand still, but since there is a play space S between the elongated hole 28a and the pin 29, the link mechanism 24 does not move, and the right claw does not move. 21b is locked by being hooked on the right protrusion 30b without being affected by the left claw 21b. This restricts careless opening of the lid.

Each of the claws 21b is separated from the other claws 21 by the range of the play S.
In this case, the floating left side of the lid 16 is pressed down with a finger because the lid 16 can be freely opened independently of b. As a result, if the left claw 21b is forcibly opened by applying a force to the projection 30b of the lid 16 to a degree that opposes the urging force of the torsion spring 32, the locking can be performed.

With both claws 21b locked, cover 1
Even if 6 is displaced in the lateral direction and one of the claws 21b is unlocked, one of the claws 21b can maintain the lock as described above. And, as above,
If the unlocked side of the lid 16 is pushed down, it can be locked again.

FIGS. 8 and 9 show a lock device 20 according to another embodiment of the present invention. Here, the same members as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. Now, in the lock device 20 of the above-mentioned embodiment, the lock of the claw 21b is released by the lid-opening slider 23, but in this embodiment, as shown in FIG. The lid lever 38 is substituted. As shown in FIG. 9, the rotating plate 26 is attached to the outside of the front surface of the rear cabinet 13. Thus, when the cover opening lever 38 is operated, the rotating plate 26 can be directly rotated to release the locked state.

In the above-described embodiment, an example is shown in which the claws 21b face inward. However, the claws 21b may be disposed facing each other so as to face outward, and the present invention is not limited to this embodiment.

[0036]

As described above, in the lid locking device according to the present invention, when the lid of the container is closed, the pair of locking means arranged to lock the lid are independent of each other. And releasing means for simultaneously releasing the pair of locking means when the lid is opened.

Therefore, according to the present invention, even if one of the locking means is disengaged due to lateral displacement of the lid or deformation or inclination of the lid, the other maintains the lock. Inadvertent opening of the lid is restricted. Further, even when one of the locking means comes off, there is an effect that the lid can be locked by individually moving the unlocking means by, for example, pressing down the lid with an appropriate force.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a cassette tape recorder 10 to which a lock device 20 according to the present invention is applied.

FIG. 2 is a front view showing the configuration of the lock device 20.

FIG. 3 is an enlarged view of a left lock portion 21 and a protrusion 30b.

FIG. 4 is a front view illustrating a state in which the lock of the lid 16 is being released.

FIG. 5 is a front view illustrating a state where a lock of a lid 16 is released.

FIG. 6 is a front view illustrating a state where the lid 16 is being closed.

FIG. 7 is a front view illustrating a state where the left side of the lid 16 is floating.

FIG. 8 is a front view showing the configuration of another embodiment of the lock device 20.

9 is an external view of the cassette tape recorder 10 to which the lock device 20 of FIG. 8 is applied.

FIG. 10 is a perspective view showing a first example of a conventional lock device.

FIG. 11 is a perspective view showing a second example of a conventional lock device.

FIG. 12 is a perspective view showing a third example of a conventional lock device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cassette tape recorder 13 Rear cabinet 16 Lid 20 Lock device 21 Lock part 21b Claw 24 Link mechanism 26 Rotating plate 28 Link 30 Receiver 30b Projection 32 Torsion spring S Play gap

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 33/02 502

Claims (1)

(57) [Scope of request for utility model registration] When the lid of the container is closed, a pair of lock means disposed to oppose each other for locking the lid are operable independently of each other. A release means for simultaneously releasing the lock means is connected to the pair of lock means, and a play gap is provided at a connection portion between the pair of lock means and the release means. Locking device.