TWI771157B - Combination lock - Google Patents

Abstract

A combination lock. The lock housing includes a panel and a base. The number lock mechanism includes number wheels, wheel barrels inserting the number wheels, wheel springs and a wheel rod. The number wheels are arranged spacedly, and the wheel rod is inserted in the wheel barrels. The wheel springs are elastically pressed between the wheel barrels. The wheel barrel includes a flat surface and a circular lug. The key lock mechanism includes a fasten base and a lock core. The control plates includes a lock core plate, a support spring and an axle wheel. The lock core plate abuts against the fasten base and selectively abuts against the flat surface or the circular lug. The support spring elastically presses against the bottom of the lock core plate. The lock core plate has a shaft, and the axle wheel is sleeved on the shaft. The lock core plate rotates around the shaft as the center point to lock the fasten base when the lock core plate is attached to the circular lug.

Description

Double lock structure

The present invention relates to a lock, and more particularly, to a double lock structure.

A double lock is a lock that uses both a key and a number to unlock. When using a double lock, you can use the key to unlock, or turn the number wheel to the correct number and then turn the lock to drive the lock core to unlock.

In addition, the double lock controls the operation of the number wheel through the push of the multiple number plates when in use, and a bump is set on one side of the control plate to set a spring to provide elastic restoring force, so that the number wheel acts on the external force. The lower part can generate rotation, so as to perform the action of unlocking or escaping. However, during the rotation of the number wheel, the bump is easily affected by an external force and jumps off the spring and is out of position, resulting in damage to the double lock due to the inability to change the number.

In view of this, the inventor of the present invention has devoted himself to the research and application of the theory in view of the above-mentioned prior art, and tried his best to solve the above-mentioned problems, which has become the goal of the present inventor's development.

The present invention provides a double locking structure, wherein the lock core control piece is rotated through the arrangement of the support spring and the axle wheel, so as to selectively lock the lock seat, whereby the internal structure has a higher performance when the combination lock is rotated. stability, and can reduce the failure rate of double locks.

In an embodiment of the present invention, the present invention provides a double-locking structure, which includes a lock case, a combination lock mechanism, a key lock mechanism and a control chip group. The lock shell includes a panel and a base which are combined with each other, and the panel has a plurality of windows. The combination lock mechanism is installed on the base, and includes a plurality of numbering wheels, a plurality of drums through which the numbering wheels are inserted, a plurality of wheel drum springs and wheel rods. The numbering wheels are arranged at intervals and partially protrude out of the window, and the wheel rods are inserted into the wheel drums. , the wheel barrel springs are respectively elastically pressed against the wheel barrels, and each wheel barrel has a flat part and a circular lug. The key lock mechanism includes a lock base and a lock core, the lock base is installed on the base, one end of the lock core is connected to the knob, and the other end is inserted into the lock base and can selectively drive the lock base to rotate. The control plate group includes a lock center control plate, a support spring and a pair of axle wheels. The lock center control plate is pressed against the lock seat and selectively abuts against the flat part or the circular lug of each wheel cylinder, and the support spring elastically presses against the lock center On the bottom surface of the control plate, the lock center control plate has a pair of convex shafts, and the convex shafts are sleeved on the axle wheel. Lock seat.

Compared with the conventional double lock, when the number wheel rotates, the control piece of the control piece may be damaged by the spring jumping off the bump. The lock seat is selectively abutted against the plane portion or the circular lug of the wheel cylinder, and the axle wheel is sleeved on the convex shaft of the lock core control piece, and a supporting spring is arranged to elastically press against the bottom surface of the lock core control piece, thereby providing The lock core control sheet can be turned around the convex shaft and selectively lock the lock seat, so that the internal structure has high stability when the combination lock rotates, and can reduce the failure rate of the double lock and increase the cost. practicality of the invention.

1: Double lock

10: Lock Shell

11: Panel

111: Perforation

112: Window

12: Base

121: Shaft seat

122: support seat

20: Combination lock mechanism

21: Number Wheel

210: Card slot

211: Positioning dents

22: Wheels

221: Plane Department

222: Round Lugs

223: Ribs

23: Wheel spring

24: Wheel bar

25: Shaft cover

26: Positioning piece

261: Extensions

262: Claws

30: Key lock mechanism

31: Knob

32: lock heart

33: Lock seat

34: Screws

40: Control film set

41: Number Control Sheet

411: Master putter

412: Secondary putter

413: Pushing Department

42: Lock core control sheet

420: camshaft

421: Frame Board

422: convex finger

423: Wheel groove

43: Support spring

44: axle wheel

FIG. 1 is a schematic three-dimensional appearance diagram of the double-locking structure of the present invention.

FIG. 2 is an exploded perspective view of the double locking structure of the present invention.

FIG. 3 is a schematic three-dimensional appearance diagram of the internal structure of the double lock according to the present invention.

FIG. 4 and FIG. 5 are combined cross-sectional views of the inner structure of the double lock according to the present invention from two side directions.

Fig. 6 is a schematic plan view of the double lock of the present invention when the number wheel is correct.

Fig. 7 is a schematic plan view of the double lock according to the present invention when the number wheel is incorrect.

Fig. 8 is a three-dimensional appearance schematic diagram of the internal structure of the double lock according to the present invention when the number wheel is incorrect.

9 and 10 are combined cross-sectional views of the internal structure of the double lock according to the present invention when the number wheel is not correct.

The detailed description and technical content of the present invention will be described below with the accompanying drawings, but the accompanying drawings are only used for illustration purposes and are not intended to limit the present invention.

Please refer to FIG. 1 to FIG. 5 , which show a schematic three-dimensional appearance diagram, a three-dimensional exploded view, a three-dimensional appearance schematic view of the internal structure of the double-made lock, and a combined cross-sectional view of the two-side direction of the internal structure of the double-made lock of the present invention. The present invention provides a dual lock 1 , which mainly includes a lock case 10 , a combination lock mechanism 20 , a key lock mechanism 30 and a control plate group 40 arranged inside the lock case 10 . The control plate group 40 controls the combination lock mechanism 20 and the key lock mechanism 30 , and provides operations such as switch lock or number change of the double lock 1 . The structure of the double lock 1 is described in more detail as follows.

The lock case 10 includes a panel 11 and a base 12 combined with each other, and the panel 11 has a through hole 111 and a plurality of windows 112 .

The combination lock mechanism 20 is mounted on the base 12 . The combination lock mechanism 20 includes a plurality of number wheels 21 , a plurality of drums 22 through which the number wheels 21 are inserted, a plurality of drum springs 23 and a wheel rod 24 . The numbering wheels 21 are arranged at intervals and partially protrude out of the window 112 of the panel 11 , and the numbering wheels 21 respectively have a plurality of card slots 210 . Also, the wheel rod 24 is inserted into the wheel cylinders 22 . The wheel springs 23 are respectively elastically pressed against the wheel drums 22 .

Specifically, the base 12 has a pair of shaft seats 121 . Two ends of the wheel rod 24 are arranged on the pair of axle seats 121 . In addition, the combination lock mechanism 20 further includes a pair of shaft covers 25 . The pair of axle covers 25 are fastened to the base 12 and cover both ends of the wheel rod 24 .

In addition, each of the drums 22 has a flat portion 221 , a circular lug 222 and a plurality of ribs 223 . Each of the drums 22 can selectively engage or disengage the protruding ribs 223 from the engaging grooves 210 of the corresponding number wheel 21 through the drum springs 23 .

In this embodiment, the base 12 has a plurality of supporter seats 122 . In addition, the combination lock mechanism 20 further includes a positioning piece 26 . The positioning piece 26 includes an extension portion 261 and a plurality of claw portions 262 disposed on opposite sides of the extension portion 261 at intervals. The extension portion 261 is disposed on the supporter seats 122 . In addition, a plurality of positioning dimples 211 are provided on the edge surface of each of the number wheels 21 at equal intervals. The claws 262 can be selectively positioned on the positioning notches 211 .

Furthermore, the key lock mechanism 30 includes a knob 31 , a lock cylinder 32 and a lock base 33 . The knob 31 protrudes into the through hole 111 of the panel 11 . The lock seat 33 is installed on the base 12 corresponding to the position of the knob 31 . One end of the lock core 32 is connected to the knob 31 , and the other end is inserted into the lock seat 33 and can selectively drive the lock seat 33 to rotate.

The control plate group 40 includes a number control plate 41 , a lock center control plate 42 , a support spring 43 and a pair of axle wheels 44 . The number control piece 41 abuts against the lock core 32 and selectively presses against each of the drum springs Spring 23. It should be noted that the pair of axle covers 25 of the combination lock mechanism 20 also covers the pair of axle wheels 44 , so that the pair of axle wheels 44 are positioned on the base 12 .

In an embodiment of the present invention, the number control piece 41 includes a main push rod 411 surrounding the lock core 32 , a plurality of secondary push rods 412 laterally extending from one side of the main push rod 411 , and A pushing portion 413 extending downward of the secondary push rod 412 is pressed against the corresponding wheel spring 23 .

In addition, the lock core control piece 42 abuts against the lock seat 33 and selectively abuts against the flat portion 221 or the circular lug 222 of each of the wheel barrels 22 . The support spring 43 is disposed on the base 12 and elastically presses against the bottom surface of the lock core control piece 42 (refer to FIG. 4 ). In addition, the lock core control piece 42 has a pair of protruding shafts 420 , and the pair of axle wheels 44 are correspondingly sleeved with the pair of protruding shafts 420 . Accordingly, when the lock core control piece 42 is in contact with the circular lugs 222 of each of the wheel barrels 22 , it can be rotated around the pair of convex shafts 420 to lock the lock seat 33 .

In an embodiment of the present invention, the lock core control piece 42 includes a frame plate 421 surrounding the lock base 33 , and a plurality of protruding fingers 422 extending laterally from one side of the frame plate 421 . Specifically, the protruding shaft 420 of the locking core control piece 42 is extended outward from the opposite side of the frame plate 421 . In addition, the lock core control piece 42 is provided with a round groove 423 between the adjacent protruding fingers 422 . In addition, each of the number wheels 21 is inserted into the corresponding wheel groove 423 .

In this embodiment, the double lock 1 includes a plurality of supporting springs 43 . The supporting springs 43 are disposed on the base 12 and elastically press against the bottom surface of the locking core control piece 42 . The axle wheels 44 are respectively pierced through the convex shafts 421 on both sides of the lock core control piece 42 . In addition, the combination lock mechanism 20 includes three number wheels 21 , three wheel cylinders 22 and three wheel cylinder springs 23 . The three wheel cylinders 22 are correspondingly inserted in the three numbering wheels 21 , and the three wheel cylinder springs 23 are respectively elastically pressed against one side of each of the wheel cylinders 22 for elastically pushing against each of the wheel cylinders 22 . Three sets of numbering wheels 21 and wheel springs 23 arranged at intervals pass through the wheel rod 24 in sequence, and are coupled to the wheel rod 24 through the pressing plates 27 on the left and right sides. Two ends of the wheel rod 24 are arranged on the pair of axle seats 121 . Furthermore, the The shaft cover 25 covers both ends of the wheel rod 24 and the pair of shaft wheels 44 , so as to combine the lock core control piece 42 and the combination lock mechanism 20 in the base 12 .

Furthermore, the lock seat 33 is arranged on the base 12 , and the lock core 32 is inserted into the lock seat 33 . The lock core 32 is locked to the base 12 through a plurality of screws 34 and can rotate relative to the lock base 33 . In addition, the main push rod 411 of the number control piece 41 is framed around the lock core 32 , and the secondary push rods 412 are correspondingly inserted between the number wheels 21 so that the secondary push rods 412 go downward. The extended pushing portion 413 abuts against one side of each wheel spring 23 (see FIG. 5 ). Accordingly, the user can use the key to rotate the lock cylinder 32 to unlock, or rotate the key lock mechanism 30 to the correct number combination to rotate the lock cylinder 32, so that the double lock 1 can be unlocked.

Please also refer to FIG. 6 , which shows a schematic plan view of the dual-system lock of the present invention when the number wheel is correct. When the numbering wheels 21 are rotated to the set number combination, the plane portions 221 of the wheel cylinders 22 will abut against the lock core control piece 42 (refer to FIG. 4 ) at the same time, and the frame plate 421 of the lock core control piece 42 is the It is straightly inserted outside the lock seat 33 (refer to FIG. 3 ), and the lock core 32 can be rotated to unlock at this time. It is worth noting that the protruding ribs 223 of the wheels 22 are separated from the corresponding slots 210 of the numbering wheel 21 .

Please refer to FIG. 7 to FIG. 10 again, which show the schematic plan view of the double-lock lock according to the present invention when the number wheel is incorrect, the three-dimensional appearance diagram of the internal structure of the double lock when the number wheel is incorrect, and the internal structure of the double lock when the number wheel is incorrect. Combined sectional view of the two side directions when the wheel is not correct. As shown in FIG. 7 , when the numbering wheels 21 are rotated to a non-set numbering combination, the circular lugs 222 of at least one wheel drum 22 will abut against the locking core control piece 42 (refer to FIG. 9 ), thereby causing the The locking core control piece 42 is pressed by the circular lug 222 and rotates around the pair of axle wheels 44 . At this time, the frame plate 421 of the lock core control piece 42 will clamp the outer edge of the lock base 33 (refer to FIG. 8 ). At this time, the lock base 33 cannot rotate, and the lock core 32 cannot drive the lock base 33 to rotate. Make the double lock 1 in the closed state.

It should be noted that, as shown in FIG. 10 , when the dual lock 1 of the present invention is in the locked state, the main push rod 411 of the number control piece 41 will be pushed by the lock core 32 . The rod 412 and the pushing portion 413 push against the corresponding wheel barrel 22 , so that the protruding ribs 223 of the wheel barrel 22 are locked into the engaging grooves 210 of the corresponding number wheel 21 .

The above descriptions are only preferred embodiments of the present invention and are not intended to define the patent scope of the present invention. Other equivalent changes using the patent spirit of the present invention shall all belong to the patent scope of the present invention.

12: Base

121: Shaft seat

20: Combination lock mechanism

24: Wheel bar

25: Shaft cover

30: Key lock mechanism

32: lock heart

33: Lock seat

40: Control film set

41: Number Control Sheet

42: Lock core control sheet

421: Frame Board

44: axle wheel

Claims (10)

A double lock structure, comprising: a lock shell, including a panel and a base combined with each other, the panel has a plurality of windows; a combination lock mechanism, installed on the base, the combination lock mechanism includes a plurality of number wheels, through A plurality of wheels, a plurality of wheel springs and a wheel rod of the number wheels, the number wheels are arranged at intervals and partially protruding from the windows, the wheel rods pass through the wheels, and the wheel springs respectively elastically pressed against the wheel cylinders, each of the wheel cylinders has a flat part and a circular lug; a key lock mechanism includes a lock seat and a lock core, the lock seat is installed on the base, the The lock core is inserted into the lock base and can selectively drive the lock base to rotate; and a control plate group, including a lock core control piece, a support spring and a pair of axle wheels, the lock core control piece abuts against the lock core The lock seat is selectively abutted against the plane portion or the circular lug of each wheel cylinder, the supporting spring is elastically pressed against the bottom surface of the lock core control piece, the lock core control piece has a pair of protruding shafts, the pair of axle wheels When the pair of protruding shafts is sleeved, the lock center control piece can be turned around the pair of protruding shafts when it abuts against the circular protruding lugs of each of the wheel barrels to lock the lock seat. The double lock structure of claim 1, wherein the panel has a through hole, the key lock mechanism includes a knob protruding from the through hole, and one end of the lock core is connected to the knob. The double locking structure according to claim 1, wherein the base has a pair of axle seats, and the two ends of the wheel rod are arranged on the pair of axle seats; and the combination lock mechanism further comprises a pair of axle covers, the pair of axle covers The axle cover covers the two ends of the wheel rod and the pair of axle wheels. The double locking structure according to claim 1, wherein the base has a plurality of support pieces, the combination lock mechanism further comprises a positioning piece, the positioning piece includes an extension portion and a plurality of spaced apart on opposite sides of the extension portion a claw part, the extension part is arranged on the spreader seats; and the edge surface of each of the number wheels A plurality of positioning dimples are provided at equal intervals, and the claws can be selectively positioned on the positioning dimples. The double locking structure as claimed in claim 1, wherein the numbering wheels respectively have a plurality of card slots, each of the wheels has a plurality of protruding ribs, and each of the wheel drums can allow the protruding ribs to be selected through the wheel springs to engage or disengage the corresponding slot of the number wheel. The double lock structure of claim 1, wherein the lock core control piece comprises a frame plate surrounding the lock base, a plurality of protruding fingers extending laterally from one side of the frame plate, and the protruding fingers Extend to the bottom side of the corresponding wheel. The double locking structure as claimed in claim 6, wherein the lock core control piece is provided with a wheel groove between the adjacent protruding fingers, and each of the numbered gear trains is passed through the corresponding wheel groove. The double locking structure as claimed in claim 6, wherein the protruding shafts of the lock core control pieces extend outwardly from opposite sides of the frame plate. The double locking structure of claim 1, wherein the control plate group further comprises a number control plate, the number control plate abuts against the lock core and selectively presses against each of the wheel springs. The double locking structure of claim 9, wherein the number control piece comprises a main push rod surrounding the lock core, a plurality of secondary push rods laterally extending from one side of the main push rod, and a plurality of secondary push rods extending from one side of the main push rod A pushing portion extending downward of the push rod is abutted against the corresponding wheel spring.

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