Information
-
Patent Grant
-
6568225
-
Patent Number
6,568,225
-
Date Filed
Wednesday, February 20, 200222 years ago
-
Date Issued
Tuesday, May 27, 200321 years ago
-
Inventors
-
-
Examiners
- Knight; Anthony
- Walsh; John B.
Agents
-
CPC
-
US Classifications
Field of Search
US
- 070 571
- 070 67
- 070 2784
- 070 2785
- 070 33 BR
- 070 439
- 070 441
- 070 DIG 49
- 070 312
- 070 318
-
International Classifications
-
Abstract
A theftproof lock device for a suitcase includes a housing, and a closure plate mounted on an opened side of the housing, and further includes multiple number wheel sets, two opposite press members, a drive plate, a slide, and a circuit board each mounted between the housing and the closure plate. Thus, the number wheel of the number wheel set for controlling the alarm may be rotated to an erroneous position, so as to start the alarm easily, thereby providing a theftproof effect. In addition, the number wheel of the number wheel set for controlling the alarm may be rotated to a correct position, thereby closing the alarm.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a theftproof lock device for a suitcase, and more particularly to a theftproof lock device for a suitcase, wherein the number wheel of the number wheel set for controlling the alarm may be rotated to an erroneous position, so as to start the alarm easily, thereby providing a theftproof effect.
2. Description of the Related Art
The closest prior art of which the applicant is aware is disclosed in his U.S. Pat. No. 6,357,265.
A conventional lock device for a suitcase in accordance with the prior art shown can be used to lock the suitcase, thereby preventing the suitcase from being opened by any person easily. However, the conventional lock device for a suitcase cannot provide a theftproof effect, so that it is easily stolen by an intentional person.
SUMMARY OF THE INVENTION
The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional lock device for a suitcase.
The primary objective of the present invention is to provide a theftproof lock device for a suitcase, wherein the number wheel of the number wheel set for controlling the alarm may be rotated to an erroneous position, so as to start the alarm easily, thereby providing a theftproof effect.
Another objective of the present invention is to provide a theftproof lock device for a suitcase, wherein the number wheel of the number wheel set for controlling the alarm may be rotated to a correct position, thereby closing the alarm.
In accordance with the present invention, there is provided a theftproof lock device for a suitcase, comprising a housing, a closure plate mounted on an opened side of the housing, and further comprising multiple number wheel sets, two opposite press members, a drive plate, a slide, and a circuit board each mounted between the housing and the closure plate, wherein:
the circuit board is secured on one side of the closure plate, and is provided with at least one number switch which includes a first conductive plate and a second conductive plate, the at least one number switch is connected with a switch conductive plate set which is electrically connected with an alarm; and
the housing has an upper portion for receiving the two opposite press members, the slide is movably mounted between the two opposite press members, the housing has a lower portion provided with multiple protruding shafts for mounting the multiple number wheel sets, each of the multiple number wheel sets includes a number wheel and a control wheel in turn mounted on a respective one of the multiple protruding shafts of the housing, the control wheel has a first side formed with multiple cavities, the number wheel is provided with multiple bosses that may be inserted into and locked in the multiple cavities of the control wheel, so that the number wheel may drive the control wheel to rotate, the control wheel has a second side provided with a spring which is rested on the first conductive plate of the number switch of the circuit board, the second side of the control wheel is provided with a boss that may contact the second conductive plate of the number switch of the circuit board, the boss is conducted with the spring, the control wheel has an outer periphery formed with a breach located opposite to the boss, the drive plate is mounted between the multiple number wheel sets and the closure plate, the drive plate is formed with multiple oblong slots for receiving the multiple control wheels of the multiple number wheel sets, and each of the multiple oblong slots of the drive plate is provided with a lug that may be inserted into and locked in the breach of the respective control wheel.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a schematic view of a theftproof lock device for a suitcase in accordance with a preferred embodiment of the present invention;
FIG. 2
is a perspective view of a theftproof lock device for a suitcase in accordance with a preferred embodiment of the present invention;
FIG. 3
is an exploded perspective view of the theftproof lock device for a suitcase taken along line
3
—
3
as shown in
FIG. 2
;
FIG. 4
is a top plan cross-sectional view of the theftproof lock device for a suitcase as shown in
FIG. 2
;
FIG. 5
is a partially cut-away front plan view of the theftproof lock device for a suitcase as shown in
FIG. 2
;
FIG. 6
is a schematic operational view of the theftproof lock device for a suitcase as shown in
FIG. 5
in use; and
FIG. 7
is a circuit diagram of an alarm of the theftproof lock device for a suitcase in accordance with a preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings and initially to
FIGS. 1-3
, a theftproof lock device
100
in accordance with a preferred embodiment of the present invention is available for a suitcase
9
, and comprises a housing
1
, and a closure plate
7
mounted on an opened side of the housing
1
. The theftproof lock device
100
further comprises multiple number wheel sets
2
, two opposite press members
3
, a drive plate
4
, a slide
5
, and a circuit board
6
each mounted between the housing
1
and the closure plate
7
.
The circuit board
6
is secured on one side of the closure plate
7
, and is provided with multiple number switches
60
each including a first conductive plate
601
and a second conductive plate
602
. Each of the multiple number switches
60
is connected with a switch conductive plate set
61
which is electrically connected with an alarm
8
which is provided with a vibration switch
80
and a battery
81
.
As shown in
FIG. 3
, the housing
1
has an upper portion formed with two opposite first receiving spaces
11
and a lower portion formed with a second receiving space
10
. The upper portion of the housing
1
is provided with a longitudinal baffle
12
located between the two opposite first receiving spaces
11
. The longitudinal baffle
12
is provided with a catch bar
121
protruding outward. Each of the two opposite first receiving spaces
11
of the housing
1
has an outer side formed with a press breach
13
. The housing
1
has a top formed with two spaced insertion trenches
110
each extending downward and each communicating with a respective one of the two opposite first receiving spaces
11
. Each of the two opposite first receiving spaces
11
of the housing
1
has an inner side provided with a catch plate
111
aligning with a respective one of the two spaced insertion trenches
110
.
Each of the two opposite press members
3
is movably mounted in a respective one of the two opposite first receiving spaces
11
of the housing
1
, and is formed with a slot
30
for receiving the catch plate
111
. Each of the two opposite press members
3
has a first side provided with a press portion
31
, and a second side provided with a locking hook
301
that may be locked in the catch plate
111
to close the respective insertion trench
110
of the housing
1
. The second side of each of the two opposite press members
3
is provided with a protruding bar
32
extending outward.
Each of the two opposite press members
3
is provided with a spring
33
mounted between a wall of the slot
30
and the catch plate
111
, so that the locking hook
301
of each of the two opposite press members
3
is normally locked in the catch plate
111
to close the respective insertion trench
110
of the housing
1
, thereby forming a locking state.
The second receiving space
10
of the housing
1
is provided with multiple protruding shafts
101
, and multiple breaches
102
located under the multiple protruding shafts
101
.
As shown in
FIGS. 3 and 4
, each of the multiple number wheel sets
2
is mounted on a respective one of the multiple protruding shafts
101
. Each of the multiple number wheel sets
2
includes a number wheel
20
and a control wheel
21
in turn mounted on a respective one of the multiple protruding shafts
101
of the second receiving space
10
of the housing
1
.
The number wheel
20
has one side formed with a recess
200
for receiving the control wheel
21
. The control wheel
21
has a first side formed with multiple cavities
213
. The recess
200
of the number wheel
20
is provided with multiple bosses
201
that may be inserted into and locked in the multiple cavities
213
of the control wheel
21
, so that the number wheel
20
may drive the control wheel
21
to rotate.
The control wheel
21
has a second side formed with a recess
210
for receiving a spring
22
which is rested on the first conductive plate
601
of the respective number switch
60
of the circuit board
6
. The second side of the control wheel
21
is provided with a boss
211
that may contact the second conductive plate
602
of the respective number switch
60
of the circuit board
6
. The boss
211
is conducted with the spring
22
. The control wheel
21
has an outer periphery formed with a breach
212
located opposite to the boss
211
.
As shown in
FIG. 3
, the drive plate
4
is mounted between the multiple number wheel sets
2
and the closure plate
7
. The drive plate
4
is formed with multiple transverse oblong slots
40
for receiving the multiple control wheels
21
of the multiple number wheel sets
2
. Each of the multiple transverse oblong slots
40
of the drive plate
4
is provided with a lug
400
that may be inserted into and locked in the breach
212
of the respective control wheel
21
. The drive plate
4
has a top formed with a recess
41
that is provided with an inclined face
410
.
The slide
5
has a center formed with a passage slot
50
for receiving the catch bar
121
of the baffle
12
. A spring
53
is mounted in the passage slot
50
, and is urged between the catch bar
121
of the baffle
12
and a bottom face of the passage slot
50
. The slide
5
has a top formed with a guide slot
52
for insertion of the baffle
12
, and a bottom provided with a wedge
51
that may be inserted into and locked in the recess
41
of the drive plate
4
. The slide
5
has two opposite sides that may stop the protruding bar
32
of each of the two opposite press members
3
, so that the two opposite press members
3
cannot move, thereby forming a locking state.
Thus, the theftproof lock device
100
in accordance with a preferred embodiment of the present invention is provided with a circuit board
6
that may be connected with each of the multiple number wheel sets
2
, and the circuit board
6
is provided with a switch conductive plate set
61
, so that the user may use the switch conductive plate set
61
to select either one of the multiple number wheel sets
2
as the code switch of the alarm
8
.
As shown in
FIG. 5
, each of the multiple number wheel sets
2
is rotated to an erroneous position, so that the theftproof lock device
100
in accordance with a preferred embodiment of the present invention may be locked.
At this time, the boss
211
of the control wheel
21
is detached from the second conductive plate
602
of the respective number switch
60
of the circuit board
6
, while the lug
400
of each of the multiple transverse oblong slots
40
of the drive plate
4
is urged by the outer periphery of the respective control wheel
21
, so that the drive plate
4
may be moved sideward. Then, the inclined face
410
of the recess
41
of the drive plate
4
may push the wedge
51
of the slide
5
, so that the slide
5
may be moved upward to a determined position as shown in FIG.
5
. At this time, the two opposite sides of the slide
5
may stop the protruding bar
32
of each of the two opposite press members
3
, so that the two opposite press members
3
cannot move, thereby forming a locking state.
The control wheel
21
is rotated by the number wheel
20
, so that the boss
211
of the control wheel
21
may be detached from the second conductive plate
602
of the respective number switch
60
of the circuit board
6
, thereby starting the alarm
8
. Thus, if the suitcase
9
is moved, the vibration switch
80
of the alarm
8
may be started to buzz, thereby providing a theftproof effect. Thus, the number wheel
20
of the number wheel set
2
for controlling the alarm
8
may be rotated to an erroneous position, so as to start the alarm
8
easily, thereby providing a theftproof effect. In addition, the number wheel
20
of the number wheel set
2
for controlling the alarm
8
may be rotated to a correct position, thereby closing the alarm
8
.
As shown in
FIG. 6
, the number wheel
20
of each of the multiple number wheel sets
2
is rotated to a correct position, so that the theftproof lock device
100
in accordance with a preferred embodiment of the present invention may be unlocked.
When the number wheel
20
of each of the multiple number wheel sets
2
is rotated to the correct position, the breach
212
of the control number
21
of each of the multiple number wheel sets
2
is rotated to align with the lug
400
of each of the multiple transverse oblong slots
40
of the drive plate
4
, while the boss
211
of the control wheel
21
contacts the second conductive plate
602
of the respective number switch
60
of the circuit board
6
, thereby closing the alarm
8
.
At this time, the slide
5
between the two opposite press members
3
is moved downward by the restoring force of the spring
53
, whereby the two opposite sides of the slide
5
may detach from the protruding bar
32
of each of the two opposite press members
3
, so that the two opposite press members
3
can move freely, thereby forming an unlocking state. Thus, the two opposite press members
3
may be pressed, to detach the locking hook
301
of each of the two opposite press members
3
from the insertion trench
110
of the housing
1
, so that the suitcase
9
may be opened.
As shown in
FIG. 7
, the circuit diagram of the alarm is shown and is illustrated as follows.
1. When the circuit is closed, the number switch presents a short state. Thus, U
2
has an input terminal that is grounded, and an output terminal that may output a high voltage through D
2
and R
6
to U
4
, thereby suppressing the signal sent from the vibration switch.
2. When the circuit is started, the number switch presents an opened state. At this time, R
2
and C
2
may form a delay circuit, so that U
2
may delay three seconds to send a low voltage to eliminate the suppression signal. At this time, when the vibration switch is operated, the signal may enter U
6
conveniently.
3. When the vibration switch is triggered after the circuit is opened, the signal may be delayed three seconds by R
1
and C
1
, and R
4
and C
4
, and may then be sent to U
3
to start the timing circuit (R
2
and C
2
). At this time, U
6
may obtain the triggered signal sent from U
4
and U
5
to produce an alarm, and C
4
and R
5
will count two minutes, so that the alarm may be stopped during two minutes, and may return to the alarming state.
4. When the circuit is closed, the number switch presents a short state. Thus, U
2
has an input terminal that is grounded, and R
2
and C
2
may form a delay circuit, so that U
2
may delay three seconds to send a high voltage through D
2
and R
6
to U
4
, thereby suppressing the signal sent from the vibration switch.
When the number wheel of each of the multiple number wheel sets is rotated to the correct position, the switch is short, and the alarm is closed. When the number wheel of each of the multiple number wheel sets is rotated to the incorrect position, the switch is opened, and the alarm is started. Thus, when the theftproof lock device in accordance with a preferred embodiment of the present invention is vibrated by an external force, the vibration switch is started, so that the alarm will produce an alarm, thereby providing a theftproof effect. In addition, when the vibration switch is started, the alarm will delay three seconds to alarm, so that the user has enough time to release the alarm.
Although the invention has been explained in relation to its preferred embodiment as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.
Claims
- 1. A theftproof lock device for a suitcase, comprising a housing, a closure plate mounted on an opened side of the housing, and further comprising multiple number wheel sets, two opposite press members, a drive plate, a slide, and a circuit board each mounted between the housing and the closure plate, wherein:the circuit board is secured on one side of the closure plate, and is provided with at least one number switch which includes a first conductive plate and a second conductive plate, the at least one number switch is connected with a switch conductive plate set which is electrically connected with an alarm; and the housing has an upper portion for receiving the two opposite press members, the slide is movably mounted between the two opposite press members, the housing has a lower portion provided with multiple protruding shafts for mounting the multiple number wheel sets, each of the multiple number wheel sets includes a number wheel and a control wheel in turn mounted on a respective one of the multiple protruding shafts of the housing, the control wheel has a first side formed with multiple cavities, the number wheel is provided with multiple bosses that may be inserted into and locked in the multiple cavities of the control wheel, so that the number wheel may drive the control wheel to rotate, the control wheel has a second side provided with a spring which is rested on the first conductive plate of the number switch of the circuit board, the second side of the control wheel is provided with a boss that may contact the second conductive plate of the number switch of the circuit board, the boss is conducted with the spring, the control wheel has an outer periphery formed with a breach located opposite to the boss, the drive plate is mounted between the multiple number wheel sets and the closure plate, the drive plate is formed with multiple oblong slots for receiving the multiple control wheels of the multiple number wheel sets, and each of the multiple oblong slots of the drive plate is provided with a lug that may be inserted into and locked in the breach of the respective control wheel.
- 2. The theftproof lock device for a suitcase in accordance with claim 1, wherein the alarm is provided with a vibration switch.
- 3. The theftproof lock device for a suitcase in accordance with claim 1, wherein the housing has a top formed with two spaced insertion trenches each extending into the inside of the housing, and each of the two opposite press members is provided with a locking hook that may extend into and close the respective insertion trench of the housing.
- 4. The theftproof lock device for a suitcase in accordance with claim 1, wherein the drive plate has a top formed with a recess that is provided with an inclined face.
- 5. The theftproof lock device for a suitcase in accordance with claim 4, wherein the slide has a center formed with a passage slot for receiving a spring, and the slide has a bottom provided with a wedge that may be inserted into and locked in the recess of the drive plate.
US Referenced Citations (18)
