JPH07105672A - Door lock mechanism for electric equipment - Google Patents

Abstract

PURPOSE:To obtain a door lock mechanism for an electric equipment capable of preventing interference with a shutter for preventing double insertion. CONSTITUTION:This mechanism is provided with a lever main body 6a arranged proximately to the side end of a door 1 which is energized by a spring 5 and is in a closed state, a lock part 6b provided in the lever main body 6a and abutting on the side end of the door 1 in the closed or opened state, and lock releasing part 6c provided in the lever main body 6a and abutting on a cartridge 3 or a casette, etc., to be inserted. Thus, in the case of releasing lock because of the insertion of the cartridge 3, a lock lever 6 goes away from the door 1 and moves in a direction where they are separted from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism for locking a door for preventing foreign matter from being inserted in an electric device such as a disk player or a video tape recorder when a cartridge or a cassette is not inserted.

[0002]

2. Description of the Related Art Conventionally, as a door locking mechanism in an electric device, in order to lock the door for closing the cartridge insertion opening, the door is biased outward and the door is closed at the bottom of both ends of the door. There is known a chevron-shaped vertical locking mechanism that is engaged so as to hold it from the front and back, and is pushed down by inserting and discharging a cartridge, a cassette, or the like (see Japanese Utility Model Laid-Open No. 4-126390).

[0003]

However, in the door locking mechanism described above, the door is formed in the shape of a vertical chevron plate which is engaged so as to sandwich the lower side end portion of the closed door from the front and rear. Therefore, there is a problem that it interferes with the shutter, which is another door that opens and closes the insertion opening in conjunction with opening and closing of the door to prevent double insertion of the cartridge. Therefore, it is an object of the present invention to provide a door locking mechanism in an electric device that can prevent interference with a shutter by moving in a direction in which they are separated from each other when unlocking.

[0004]

In order to solve the above-mentioned problems, the present invention is to lock a door for closing an insertion port by engaging with a door side end portion thereof and being disengaged by inserting a cartridge or a cassette. A lock mechanism for a door in an electric device to be released, the lever body being spring-biased and arranged in the vicinity of a closed door, and a lever body provided in contact with the closed or open door It is characterized by comprising a lock part and a lock release part provided on the lever body and abutting on a cartridge or the like to be inserted. Further, the present invention relates to a door locking mechanism in an electric device which is engaged with an end portion on the door side to lock the door closing the insertion opening and which is released by insertion of a cartridge, a cassette or the like and is unlocked. A lever body that is urged to be disposed close to the closed door, and a lever body that is provided on the lever body and that is engaged with the rib of the closed door shaft and that is rotatable in the unlocked state to the door shaft. It is characterized by including a lock part to be engaged and a lock release part provided on the lever main body and abutting against a cartridge or the like.

[0005]

In each of the above means, when the lock is released by inserting the cartridge or the cassette, the lock mechanism moves away from the door and moves away from the door.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing a main part of a door lock mechanism according to a first embodiment of the present invention, and FIG. 9 is an electric device (for example, an optical disc reproducing device) 2 to which the present embodiment is applied.
It is a whole perspective view of 0. In the figure, 1 is a door that closes the cartridge insertion opening 2 of the equipment case 21, and the door 1 has its upper edge pivotally supported by a hinge pin (not shown) and its lower portion externally supported by a torsion spring (not shown). It is housed in the device case 21 while being biased by a spring. In addition, in order to prevent double insertion of the disk cartridge 3 in the device case 21, there is housed a shutter 4 which is another door that moves up and down in conjunction with opening and closing of the door 1 to close the cartridge insertion opening 2. Has been done. At both ends (only one end in the figure is shown) of the door 1 in the closed state (the state shown in FIG. 1) are biased by coil springs 5 so as to approach each other, and separated by guides not shown. A pair of lock levers 6 which can be guided are arranged close to each other.
Each of the lock levers 6 has a length substantially similar to the height of the door 1, is provided at a right angle to the upper end portion of the lever body 6a extending vertically, and is provided on the side end surface of the door 1 in the closed state. The lock portion 6b which is brought into contact with the side end surface of the door 1 in the opened state (see FIG. 3), and the lever body 6
It is configured to have a triangular plate-shaped horizontal lock release portion 6c which is provided at the lower end portion of a and protrudes to the front, and which faces the cartridge insertion opening 2. In order to prevent interference with the lock release portion 6c, a door is provided. A rectangular notch 1a is provided in the lower portion of both side ends of 1.

In the above structure, the door 1 is locked by the lock portions 6b of the two lock levers 6 coming into contact with the back surface in the closed state, and the foreign matter is prevented from being inserted when the cartridge is not inserted. First, the cartridge 3
As shown in FIG. 2, when the cartridge 3 is inserted into the cartridge insertion opening 2, the lock release portions 6c are moved laterally by the cartridge 3, and the lock levers 6 resist the urging force of the coil spring 5 and the door 1 The door 1 is unlocked by moving away from the side end of the door and moving away from it. Next, as shown in FIG. 3, the door 1 is opened by the cartridge 3 and the lock portion 6 of the lock lever 6 is operated by the action of the coil spring 5.
The end surface of b contacts the side end surface of the door 1 and is held in the unlocked state. Then, as shown in FIG. 4, when the cartridge 3 is loaded into the case, the shutter 4 rises to close the cartridge insertion opening 2. When the shutter 4 is raised, the lock levers 6 are held in the unlocked state, so that they do not interfere with the shutter 4. On the other hand, when the cartridge 3 is ejected, the end surface of the lock portion 6b of the lock lever 6 disengages from the side end surface of the door 1 and returns to the locked state by the biasing force of the coil spring 5.

5 to 8 are a perspective view and a plan view of an essential part showing a door locking mechanism of a second embodiment of the present invention. In the figure, 11 is a door that closes the cartridge insertion opening 12 of the case. The door 11 has an upper edge shaft 11a pivotally supported by a hinge pin (not shown), and a lower portion thereof is a torsion spring (not shown). It is housed in the case by being biased outward by the spring. In the case, the cartridge 1
In order to prevent double insertion of No. 3, a shutter 14 that moves up and down in conjunction with opening and closing of the door 11 and closes the cartridge insertion opening 12 is housed. At both ends (only one end is shown in the figure) of the door 11 in the closed state (the state shown in FIG. 5), the coil springs 15 are spring-biased toward each other and separated by guides (not shown). A pair of lock levers 16 which can be guided are arranged close to each other. Each lock lever 16 has a length that is substantially the same as the height of the door 11 and extends in the vertical direction.
And a rib 11 provided on the upper end of the lever body 16a in a bifurcated shape and provided on a part of the shaft portion 11a of the door 11 in the closed state.
lock part 16 engaged with b and pivotally engaged with the shaft part 11a of the door 11 in the unlocked state (see FIG. 7).
b, and a triangular plate-shaped horizontal unlocking portion 16c which is provided at the lower end of each lever body 16a so as to project to the front and faces the cartridge insertion opening 2,
In order to prevent interference with the unlocking portion 16c, rectangular notches 11c are provided at the lower ends of both ends of the door 11.

In the above structure, the door 11 is locked by the lock portions 16b of both lock levers 16 engaging with the ribs 11b of the shaft portion 11a in the closed state, so that foreign matter is prevented from being inserted when the cartridge is not inserted. To be done. First, when the cartridge 13 is inserted into the cartridge insertion opening 12 as shown in FIG. 6, each lock release portion 16c is pushed down sideways by the cartridge 13 and both lock levers 16 are urged by the coil spring 15. Against this, the lock portion 16b moves away from the side edge portion of the door 11 and moves away from it, and the lock portion 16b is disengaged from the rib 11b of the door 11 and can be pivoted to the shaft portion 11a to unlock the door 11. . Then, as shown in FIG. 7, the door 11 is released by the cartridge 13 against the biasing force of the torsion spring, and the end surface of the lock portion 16b of the lock lever 16 abuts the end surface of the rib 11b to release the lock. Retained. Then, as shown in FIG.
When the cartridge is loaded in the case, the shutter 14 rises to close the cartridge insertion opening 12. When the shutter 14 is raised, the lock levers 6 are held in the unlocked state, so that they do not interfere with the shutter 14. On the other hand, when the door 11 is closed by the biasing force of the torsion spring when the cartridge 13 is ejected, the end face of the lock portion 16b of the lock lever 16 is disengaged from the end face of the rib 11b, and the rib 11b is pushed by the biasing force of the coil spring 15. Engage and return to the locked state.

[0010]

As described above, according to the door lock mechanism of the electric device of the present invention, when the lock is released by inserting the cartridge or the like, the pair of lock levers move away from the door and move away from each other. Therefore, it is possible to prevent interference with the shutter for preventing double insertion.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing a door lock mechanism of a first embodiment of the present invention.

FIG. 2 is a perspective view illustrating the above operation.

FIG. 3 is a perspective view illustrating the above operation.

FIG. 4 is a perspective view illustrating the above operation.

5A and 5B show a lock mechanism of a door according to a second embodiment of the present invention, FIG. 5A is a perspective view of a main part, and FIG. 5B is a plan view.

FIG. 6 is a view for explaining the operation of the embodiment shown in FIG. 5 when the cartridge is inserted.

FIG. 7 is a view for explaining the operation during loading of the cartridge of the embodiment shown in FIG.

FIG. 8 is a diagram for explaining the action of the cartridge of the embodiment shown in FIG. 5 during chucking.

FIG. 9 is an overall perspective view of an electric device to which an embodiment of the present invention is applied.

[Explanation of symbols]

 1 Door 2 Cartridge Insertion Port (Insertion Port) 3 Cartridge 4 Shutter 5 Spring 6 Lock Lever 6a Lever Body 6b Lock Part 6c Lock Release Part 11 Door 11a Shaft Part 11b Rib 12 Cartridge Insertion Port 13 Cartridge 14 Shutter 15 Spring 16 Lock Lever 16a Lever body 16b Lock part 16c Lock release part 20 Electrical equipment

Claims (2)

[Claims] 1. A door locking mechanism in an electric device, which is engaged with an end portion on a door side to lock a door closing an insertion opening, is detached by inserting a cartridge or a cassette, and is unlocked, the spring being a spring. A lever body that is urged to be disposed close to the closed door, a lock portion that is provided on the lever body and that abuts against the closed or open door, and a cartridge that is provided and inserted into the lever body. And a lock release portion that abuts against the door lock mechanism in an electric device. 2. A door locking mechanism in an electric device which is engaged with an end portion on a door side to lock a door closing an insertion opening and which is unlocked by inserting a cartridge, a cassette or the like, the spring being a spring. A lever body that is urged to be disposed close to the closed door, and a lever body that is provided on the lever body and that is engaged with the rib of the closed door shaft and that is rotatable in the unlocked state to the door shaft. A lock mechanism for a door in an electric device, comprising: a lock portion to be engaged; and a lock release portion provided on the lever main body and abutting against a cartridge or the like.