A case locking device is provided. For example, an outer case and an inner case used for various types of electronic devices, such as set-top boxes (STB), are connected by a lock using a resilient force from an elastic material, such as a spring, so that the outer case and the inner case may be sepa
A case locking device is provided. For example, an outer case and an inner case used for various types of electronic devices, such as set-top boxes (STB), are connected by a lock using a resilient force from an elastic material, such as a spring, so that the outer case and the inner case may be separated from each other using only a separately provided jig. Accordingly, the outer case and the inner case may be connected to each other more easily and any general user may be prevented from separating the case arbitrarily, thus making it possible to effectively prevent catastrophic failures from occurring at the electronic device due to a user's arbitrary manipulation.
대표청구항▼
1. A case locking device for securing an inner case of a housing to an outer case of the housing, the case locking device comprising: a lock that secures the inner case to the outer case with a pressing force, the lock comprising a plurality of laterally spaced-apart protrusions protruding in a same
1. A case locking device for securing an inner case of a housing to an outer case of the housing, the case locking device comprising: a lock that secures the inner case to the outer case with a pressing force, the lock comprising a plurality of laterally spaced-apart protrusions protruding in a same direction through a plurality of laterally-spaced apertures provided in a front cover of the lock, wherein each of the plurality of protrusions has an inclined surface and each of the plurality of protrusions shares a contiguous base portion, and an elastic material that pushes the plurality of protrusions toward a wall of the outer case, wherein the inclined surface of at least one protrusion of the plurality of protrusions is at a different angle of inclination than an angle of inclination of the other protrusions. 2. The case locking device of claim 1, wherein an insertion hole is provided in a side wall of the inner case configured to receive the lock therein, and a fastener is provided in a side surface of the outer case to receive at least one of the plurality of protrusions of the lock inserted through the insertion hole. 3. The case locking device of claim 1, wherein the plurality of the protrusions moves toward an inside of the inner case by a pressing force exerted by the outer case onto the inclined surface of the at least one protrusion, which locks the outer case to the inner case by a resilient force of the elastic material. 4. The case locking device of claim 1, wherein the plurality of the protrusions moves toward an inside of the inner case by a pressing force exerted by at least one protrusion of a jig applied to the inclined surface of the at least one protrusion having the differently angled inclined surface to separate the outer case and the inner case from each other. 5. The case locking device of claim 4, wherein the protrusion of the jig is provided near a location corresponding to a connection location of the lock in order to be inserted into a fastener exposed between the outer case and the inner case. 6. The case locking device of claim 1, wherein the lock is provided inside the housing and is not visible from outside the housing. 7. The case locking device of claim 1, wherein the lock further comprises the front cover, a hook including the base portion and having the plurality of protrusions, and the elastic material, which is located between the hook and a rear cover. 8. The case locking device of claim 2, wherein the insertion hole comprises a through hole having a narrow portion and a wider portion that are integrally formed to each other. 9. The case locking device of claim 2, wherein the fastener comprises at least one first hole that penetrates a side wall of the outer case and one or more second holes that penetrate the side wall and a bottom wall of the outer case. 10. The case locking device of claim 9, wherein the at least one protrusion is inserted into the at least one first hole, and the remaining protrusion or protrusions are inserted into the one or more second holes. 11. The case locking device of claim 10, wherein the at least one protrusion has a step which is hung on the at least one first hole. 12. The case locking device of claim 11, wherein the at least one protrusion has a step comprising a surface having a normal vector that extends in the same direction as a vertical component of the inclined surface of the at least one protrusion. 13. The case locking device of claim 10, wherein one or more protrusions of a jig is inserted into the one or more second holes from the bottom wall of the outer case to separate the outer case and the inner case from each other. 14. The case locking device of claim 13, further comprising a plurality of the locks and a plurality of the fasteners provided at spaced locations around the outer case, wherein the one or more second holes are formed at spaced locations corresponding to the spaced locations of the plurality of the fasteners. 15. A case locking device for securing an inner case of a housing to an outer case of the housing, the case locking device comprising: a lock comprising a hook having a first protrusion and at least one second protrusion, which are laterally spaced apart and share a contiguous base portion, the first protrusion and the at least one second protrusion protruding in a same direction through a plurality of corresponding laterally-spaced apertures provided in a front cover of the lock, the hook having an extended position and a retracted position, the hook being biased by a spring into the extended position, the first protrusion having an inclined surface on one side of the first protrusion, the at least one second protrusion having an inclined surface on one side of the at least one second protrusion, the one side of the first protrusion facing in a direction opposite to the one side of the at least one second protrusion, wherein the inclined surface of the first protrusion engages an edge of the outer case that forces the hook into a retracted position until the first protrusion is aligned with a first fastener opening formed in the outer case whereupon the spring forces the hook into the extended position and the first protrusion enters the first fastener opening and the at least one second protrusion enters a corresponding second fastener opening formed in the outer case, securing the outer case to the inner case. 16. The case locking device of claim 15, wherein the hook is retractable into the retracted position in which the first protrusion and the at least one second protrusion are not engaged with the first fastener opening and second fastener opening, respectively, when a jig contacts the inclined surface of the at least one second protrusion through the second fastener opening, applying a force to the hook and permitting the outer case to be separated from the inner case. 17. The case locking device of claim 15, wherein the at least one second protrusion comprises a plurality of second protrusions each having an inclined surface. 18. The case locking device of claim 17, wherein the first protrusion further comprises a non-inclined side opposite to the one side of the first protrusion that engages with a complementary edge of the first fastener opening to prevent the outer casing from being removed from the inner case. 19. The case locking device of claim 18, wherein the case locking device is configured to be mountable in a mounting hole formed in the inner case and further comprises a locking device housing having a rear cover in which the hook is slidably mountable, the spring being interposed between the hook and the rear cover, and the front cover, which is configured to contain the hook and spring within the rear cover. 20. A tamper resistant housing comprising the case locking device of claim 19, wherein the outer casing further comprises an outwardly turned flange and wherein a plurality of the second fastener openings are partially formed in the flange.
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