JP2004318479A - Card lock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure that a card lock mechanism of an electronic device with a card slot prevents errors in the insertion and withdrawal of a card using a simple arrangement. <P>SOLUTION: The card lock mechanism comprises a switch for turning on and off a card drive circuit which allows reading from and writing to a card, and a shutter member which operates in conjunction with the switch to move between a position behind the card slot of a card storage part where it allows insertion of the card and a position where it blocks the card from being inserted. As the switch is turned on, the shutter member moves to the position where it blocks the card from being inserted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technology related to a card lock mechanism in an electronic device having a storage section for a card that expands the functions of a device such as a memory card, and is particularly suitable for mounting on a thin display device such as a liquid crystal television or an organic EL television. .
[0002]
[Prior art]
2. Description of the Related Art A related art is disclosed in Patent Document 1 and the like regarding a card lock mechanism of an electronic device having a card slot.
[0003]
According to Patent Literature 1, in an information processing apparatus having a card storage section, a simple structure is provided by extending a switch cover to a card insertion / removal hole and providing the shutter as a shutter which enters and exits the card storage section by operating a switch. Thus, it is possible to reliably prevent the card from being unplugged and inserted when the power supply or the like is turned on, and to prevent adverse effects on data signals and the like.
[0004]
[Patent Document 1]
JP-A-1-35456 [0005]
[Problems to be solved by the invention]
However, in the prior art, since a part of the switch cover is used as a shutter, the switch cover becomes large and the sliding operation of the switch itself is not smooth, and the shutter exists close to the surface of the device. For this reason, there is a possibility of being forcibly opened or opened at a beat that hits something, and a proposal for a simple and reliable lock structure is required.
[0006]
The present invention has been made in view of such a situation, and is a proposal of a lock mechanism that reliably prevents erroneous card insertion and removal with a simple configuration. Further, in a thin display device such as a liquid crystal television, when a card storage portion for extending functions is provided, a thin type having a lock mechanism for securely preventing erroneous card insertion / removal without impairing the feature of being thin. It is a proposal of a display device.
[0007]
[Means for Solving the Problems]
The present invention provides means for solving such problems, and the invention of each claim constitutes the following technical means.
[0008]
In the present invention, in an electronic device having a card storage unit for storing a card that expands the functions of a device such as a memory card and a program card, a switch for turning on and off a card driving circuit for reading from and writing to the card, A shutter member that moves between a position where a card can be inserted and a position where card insertion is obstructed behind the card insertion slot of the card storage unit in conjunction with the switch, and the shutter member is used for turning on the switch. The card is moved to a position where the card insertion is obstructed in conjunction therewith.
[0009]
Further, in the present invention, in the above invention, the shutter member includes an engaging portion with the switch, a rotating shaft or a shaft hole engaging with the rotating shaft, and a shutter portion moving behind the card insertion slot. It is characterized by.
[0010]
Further, in the present invention, in the above invention, the shutter member has a substantially U-shape, and has a U-shape central portion having a shaft hole that engages with the rotation shaft or the rotation shaft. One end has an engagement portion with the switch, and the other end has a U-shaped shutter.
[0011]
According to the present invention, in the above invention, a semicircular opening is provided at a part of the card insertion / extraction opening for pinching an end of the card to be inserted / extracted with a fingertip.
[0012]
Further, in the present invention, the card lock mechanism of the present invention is provided on a front surface and / or a side surface and / or a top surface of the thin display device.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An example of an embodiment of a card lock mechanism according to the present invention will be described below with reference to FIGS.
[0014]
FIG. 1 is an exploded perspective view of the card lock device. The front frame 4 has a rectangular knob opening 4b for sliding the knob 2 to the left and right, and a card ejection recess (knob for knob) that is ejected in the shape of a finger when inserting or removing a card for expanding the functions of a device such as a memory card or a program card. A card opening 4a for inserting a card having a portion 4c, a card holding rib 4d provided as a pair for guiding the inserted card, and a boss 4e for fixing the knob holder 3 are provided.
[0015]
The knob holder 3 has a guide 3b on which the knob 2 slides, a lever fitting shaft 3a serving as a rotation axis of the lever 1, two screw tightening holes 3c, and a slide opening for covering a range in which the switch knob 6a of the switch 6 slides. 3d is provided.
[0016]
The knob 2 has a sliding groove 2b which engages with the guide 3b and slides, and a shaft 2a which engages with the elliptical hole guide 1b of the lever 1. Although not shown, an engagement which engages with the switch knob 6a is provided on the back. A hole is provided. The lever 1 has a shutter 1a for preventing the card 7 from coming in and out, a knob holder hole 1c for engaging the lever fitting shaft 3a, and an elliptical hole 1b for engaging the shaft 2a. In addition, a card driving circuit and a card processing circuit are mounted on the substrate 5, and a switch 6 which is a driving switch for these mounted circuits is also mounted.
[0017]
The procedure for assembling the card lock device will be described with reference to FIG. The sliding groove 2b of the knob 2 is engaged with the guide 3b, and then the lever 1 is attached to the knob holder 3 while engaging both the elliptical hole 1b and the knob holder hole 1c with the shaft 2a and the lever fitting shaft 3a, respectively.
[0018]
Next, the knob holder 3 to which the lever 1 and the knob 2 are attached is attached to the front frame 4 by screwing together with the screw fastening hole 3c and the boss 4e. Next, the switch knob 6a of the switch 6 on the board 5 is inserted into the switch engagement hole on the back of the knob 2 through the slide opening 3d, and a predetermined portion of the board 5 is screwed into a chassis (not shown) to lock the card. The device section is assembled.
[0019]
FIG. 2 is a front view showing a part of a front frame and a card lock mechanism when a card is inserted and withdrawn.
FIG. 3 is a front perspective view of the card lock device when a card is inserted and removed. In FIGS. 2 and 3, the knob 2 is located at the left end of the knob opening 4b, and the card drive circuit is off.
[0020]
Since the knob 2 is located at the left end of the knob opening 4b, the shaft 2a is located at the left end of the oval hole of the lever 1, and the shutter 1a is located at the lowest point in the stroke of the shutter 1a. Does not appear within the projection range of. Therefore, when the card drive circuit is off, the shutter 1a does not exist behind the card opening 4a, and the card can be freely inserted into and removed from the card lock device.
[0021]
FIG. 4 is a front view of a part of the front frame and the card lock mechanism when the card is loaded, and FIG. 5 is a front perspective view of the card lock device when the card is loaded. 4 and 5, the knob 2 is located at the right end of the knob opening 4b, and the card driving circuit is turned on.
[0022]
Since the knob 2 is located at the right end of the knob opening 4b, the shaft 2a is located at the right end of the oval hole of the lever 1, the lever 1 rotates around the lever fitting shaft 3a, and the shutter 1a is The shutter 1a appears on the front surface of the card 7 within the extended range of the area of the card opening 4a, which is the highest point in the stroke. For this reason, when the card driving circuit is turned on, the shutter 1a is inserted between the card opening 4a and the card 7, so that insertion and removal of the card from the card lock device are prohibited.
[0023]
As described above, in the present invention, the shutter 1a is moved into and out of the card 7 insertion / removal path in conjunction with the operation of the switch 6 of the card drive circuit, thereby preventing the card 7 from being erroneously inserted / extracted.
[0024]
The card 7 can be easily pulled out at the time of unlocking by providing a finger-removing concave portion (knob portion) 4c formed in a finger shape in a part of the card opening 4a. In addition, the shutter 1a can be seen through the card opening 4a or the card removing recess 4c, and the state of the insertion and removal of the card 7 can be checked at a glance by applying a conspicuous coloring such as red or yellow to the surface of the shutter 1a. Is also possible.
[0025]
FIG. 6 is a perspective view in which the card lock device of the present invention is mounted on a liquid crystal display device. In FIG. 6, reference numeral 10 denotes a front cabinet, 10a denotes a liquid crystal display unit, 10b denotes a knob, 10c denotes a card opening, 10d denotes a card ejection recess, and 10e denotes an indicator.
[0026]
In this embodiment, the card 7 is a memory card, and the card 7 stores an encryption key for pay broadcasting, and when the encrypted data is input to the decryption means, signals such as video, audio, and data are restored. To watch paid broadcasts.
[0027]
Since the knob 10b is located at the right end of the knob opening, the card driving circuit is in an off state. Further, since the shutter (not shown) is located at the lowest point in the stroke of the shutter, the shutter is within the projection range of the area of the card opening 10c. Does not appear. Therefore, when the card driving circuit is in the off state, there is no shutter behind the card opening 10c, so that the card 7 can be freely inserted and removed from the card lock device.
[0028]
By moving the knob 10b to the left end of the knob opening after inserting the card 7, the card drive circuit is turned on, and the encrypted data of the card 7 is input to the decryption means, so that the video, audio, data and other signals are transmitted. It is restored and the pay broadcast can be viewed.
[0029]
Although FIG. 6 shows a state in which the card insertion slot is provided on the front surface of the liquid crystal display device, the installation place is not limited to the front surface of the device, but the operability is good including the side surface and the top surface. Position. Further, the example in which the encryption key of the pay broadcast is stored in the card 7 has been described, but the function of the card 7 is not limited to this, and for example, a thin display device such as a liquid crystal television or an organic EL television. It is a matter of course that the video or the like received by the computer may be recorded.
[0030]
【The invention's effect】
The present invention described above has the following effects.
According to the present invention, it is possible to prevent erroneous insertion and removal of a card with a simple configuration of a switch and a shutter member engaged with the switch.
[0031]
Further, in the present invention, by providing the shutter member behind the card insertion hole, the shutter is not opened by mistake and the erroneous insertion and removal can be surely prevented.
[0032]
Further, in the present invention, the card insertion hole is provided with an opening substantially similar to the shape of a fingertip, so that the card can be easily taken in and out.
[0033]
Furthermore, a thin display device such as a liquid crystal television can be provided with a lock mechanism that reliably prevents erroneous card insertion and removal without impairing the feature of being thin.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of a card lock mechanism according to the present invention.
FIG. 2 is a plan view showing an embodiment of a card lock mechanism according to the present invention.
FIG. 3 is a perspective view showing an embodiment of a card lock mechanism according to the present invention.
FIG. 4 is a plan view showing an embodiment of a card lock mechanism according to the present invention.
FIG. 5 is a perspective view showing an embodiment of a card lock mechanism according to the present invention.
FIG. 6 is a perspective view of a liquid crystal display device equipped with a card lock mechanism according to the present invention.
[Explanation of symbols]
1 Lever 2 Knob 3 Knob holder 4 Front frame 5 Substrate 6 Switch 7 Card

Claims (5)

In an electronic device having a card storage portion for storing a card for expanding the function of the device, a switch for turning on / off a card driving circuit for reading from or writing to the card, and the card storage in conjunction with the switch. A shutter member that moves between a position where the card can be inserted and a position where the card is obstructed behind the card insertion slot of the unit, and the shutter member obstructs the card insertion in conjunction with the ON operation of the switch. A card lock mechanism that moves to a position. The card lock mechanism, wherein the shutter member comprises an engaging portion with the switch, a rotating shaft or a shaft hole engaging with the rotating shaft, and a shutter portion moving behind the card insertion slot. The shutter member has a substantially U-shape, has a center hole in the U-shape, and has a shaft hole that engages with the rotation shaft or the rotation shaft. The card lock mechanism according to claim 1, further comprising the shutter having the other end of the dogleg. The card lock mechanism according to any one of claims 1 to 3, wherein a grip portion for gripping an end of the card to be inserted and removed with a finger is provided in a part of the card insertion slot. . A thin display device, wherein the card lock mechanism according to any one of claims 1 to 4 is provided on a front surface portion and / or a side surface portion and / or a top surface portion of the device.

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