Double lock structure

Abstract

The present invention relates to a double lock structure. A lock housing includes a faceplate and a base. A number lock mechanism includes a plurality of number wheels, a plurality of wheel cylinders for receiving the number wheels, a plurality of wheel cylinder springs, and a wheel bar. The number wheels are arranged in intervals, and the wheel bar is received in the wheel cylinders. The wheel cylinder springs are elastically pressed between the wheel cylinders. The wheel cylinders have flat portions and circular lugs. A key lock mechanism includes a lock base and a lock cylinder. A control piece set includes a lock cylinder control piece, a support spring, and a shaft wheel. The lock cylinder control piece is abutted against the lock base and selectively abuts against the flat portions or the circular lugs. The support spring is elastically pressed against a bottom surface of the lock cylinder control piece. The lock cylinder control piece has a convex shaft, and the shaft wheel is sleeved with the convex shaft. When the lock cylinder control piece abuts against the circular lugs, the lock cylinder control piece is flipped around the convex shaft to lock the lock base.

Description

Technical Field

[0001] This invention relates to a lock, and more particularly to a double-lock structure. Background Technology

[0002] A dual-control lock is a type of lock that can be unlocked using both a key and a combination lock. When using a dual-control lock, you can use a key to unlock it, or turn the lock cylinder after selecting the correct combination to unlock it.

[0003] Furthermore, in use, a double-lock system controls the operation of the number wheel by pushing multiple control plates. A protrusion on one side of each control plate houses a spring, providing elastic restoring force so that the number wheel can rotate under external force, thereby enabling unlocking or number changing. However, during rotation, the protrusion is prone to jumping out of its spring and disengaging from its position under external force, causing the double-lock to fail to change numbers and thus become damaged.

[0004] In view of this, the inventor has devoted himself to researching and applying theoretical principles to address the aforementioned problems in the prior art, which is the goal of the inventor's development. Summary of the Invention

[0005] This invention provides a dual-lock structure in which the lock cylinder control plate rotates by means of a support spring and a shaft wheel, thereby selectively engaging the lock seat. As a result, the internal structure has high stability when the combination lock rotates and the failure rate of the dual-lock can be reduced.

[0006] In this embodiment of the invention, a dual-lock structure is provided, including a lock housing, a combination lock mechanism, a key lock mechanism, and a control plate assembly. The lock housing includes a panel and a base that are assembled together, the panel having multiple windows. The combination lock mechanism is mounted on the base and includes multiple number wheels, multiple wheel cylinders through which the number wheels pass, multiple wheel cylinder springs, and wheel rods. The number wheels are spaced apart and partially protrude from the windows. The wheel rods pass through the wheel cylinders, and the wheel cylinder springs elastically press against the wheel cylinders. Each wheel cylinder has a flat portion and a circular lug. The key lock mechanism includes a lock seat and a lock cylinder. The lock seat is mounted on the base, and the lock cylinder is inserted into the lock seat and can selectively drive the lock seat to rotate. The control plate assembly includes a lock cylinder control plate, a support spring, and a pair of axle wheels. The lock cylinder control plate abuts against the lock seat and selectively abuts against the flat part or circular lug of each wheel cylinder. The support spring elastically presses against the bottom surface of the lock cylinder control plate. The lock cylinder control plate has a pair of convex shafts, and the axle wheels engage the convex shafts. When the lock cylinder control plate abuts against the circular lug of each wheel cylinder, it can rotate around the convex shafts to lock the lock seat.

[0007] Compared to known double-lock systems where the control plate may be damaged due to the spring jumping off the protrusion when the number wheel rotates, the double-lock structure of this invention features a lock cylinder control plate. The lock cylinder control plate abuts against the lock seat and selectively abuts against the flat part or circular lug of the wheel cylinder, and the shaft wheel engages with the convex shaft of the lock cylinder control plate. A support spring is also provided to elastically press against the bottom surface of the lock cylinder control plate. This allows the lock cylinder control plate to rotate around the convex shaft and selectively engage the lock seat, thereby improving the stability of the internal structure when the number lock rotates, reducing the failure rate of the double-lock system, and increasing the practicality of this invention.

[0008] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of the dual-lock structure of the present invention.

[0010] Figure 2 This is an exploded perspective view of the dual-lock structure of the present invention.

[0011] Figure 3 This is a three-dimensional external view of the internal structure of the dual-lock system of the present invention.

[0012] Figure 4 and Figure 5 This is a combined cross-sectional view of the internal structure of the dual-lock system of the present invention from both sides.

[0013] Figure 6 This is a plan view of the number wheel of the dual-lock system of the present invention when it is in the correct position.

[0014] Figure 7 This is a plan view of the double-lock mechanism of the present invention when the number wheel is incorrect.

[0015] Figure 8 This is a three-dimensional schematic diagram of the internal structure of the dual-lock system of the present invention when the number wheel is incorrect.

[0016] Figure 9 and Figure 10 This is a combined cross-sectional view of the internal structure of the dual-lock system of the present invention in two directions when the number wheel is incorrect.

[0017] In the attached figures, the following labels are used:

[0018] 1: Dual-lock system

[0019] 10: Lock Case

[0020] 11: Panel

[0021] 111: Perforation

[0022] 112: Window

[0023] 12: Base

[0024] 121: Shaft seat

[0025] 122: Support plate seat

[0026] 20: Number Lock Mechanism

[0027] 21: Number Wheel

[0028] 210: Card slot

[0029] 211: Positioning Indentation

[0030] 22: Wheel cylinder

[0031] 221: Planar Part

[0032] 222: Circular protruding lugs

[0033] 223: Convex Rib

[0034] 23: Wheel spring

[0035] 24: Wheel lever

[0036] 25: Shaft cover

[0037] 26: Positioning Piece

[0038] 261: Extension

[0039] 262:Claw

[0040] 30: Key lock mechanism

[0041] 31: Knob

[0042] 32: Locking Heart

[0043] 33: Lock base

[0044] 34: Screws

[0045] 40: Control Panel

[0046] 41: Number Control Plate

[0047] 411: Main push rod

[0048] 412: Secondary putter

[0049] 413: Pushing part

[0050] 42: Locking control plate

[0051] 420: Cam Shaft

[0052] 421: Frame Plate

[0053] 422: Convex finger

[0054] 423: Wheel Groove

[0055] 43: Support spring

[0056] 44: Axle and wheel Detailed Implementation

[0057] The structural and working principles of the present invention will be described in detail below with reference to the accompanying drawings:

[0058] Please refer to Figures 1 to 5 The diagram shows a three-dimensional external view, an exploded three-dimensional view, a three-dimensional external view of the internal structure of the double-lock, and a combined sectional view of the internal structure of the double-lock from both sides. The present invention provides a double-lock 1, mainly comprising a lock housing 10 and a combination lock mechanism 20, a key lock mechanism 30, and a control plate group 40 disposed within the lock housing 10. The control plate group 40 controls the combination lock mechanism 20 and the key lock mechanism 30, providing operations such as locking / unlocking and changing the lock number of the double-lock 1. The structure of the double-lock 1 is described in more detail below.

[0059] The lock case 10 includes a panel 11 and a base 12 that are assembled together, and the panel 11 has a through hole 111 and a plurality of windows 112.

[0060] The number lock mechanism 20 is mounted on the base 12. The number lock mechanism 20 includes multiple number wheels 21, multiple wheel cylinders 22 passing through the number wheels 21, multiple wheel cylinder springs 23, and a wheel rod 24. The number wheels 21 are spaced apart and partially protrude from the window 112 of the panel 11, and each number wheel 21 has multiple slots 210. The wheel rod 24 passes through the wheel cylinders 22. The wheel cylinder springs 23 elastically press against the space between the wheel cylinders 22.

[0061] Specifically, the base 12 has a pair of axle seats 121. The two ends of the wheel rod 24 are disposed on the pair of axle seats 121. In addition, the number lock mechanism 20 further includes a pair of axle caps 25. The pair of axle caps 25 are locked to the base 12 and cover the two ends of the wheel rod 24.

[0062] In addition, each of the wheel cylinders 22 has a flat portion 221, a circular lug 222, and a plurality of ribs 223. Each wheel cylinder 22 is able to selectively engage or disengage the ribs 223 from the corresponding slots 210 of the numbered wheel 21 by means of the wheel cylinder springs 23.

[0063] In this embodiment, the base 12 has a plurality of support plates 122. Furthermore, the number lock mechanism 20 further includes a positioning plate 26. The positioning plate 26 includes an extension 261 and a plurality of claw portions 262 spaced apart on opposite sides of the extension 261. The extension 261 is disposed on the support plates 122. In addition, each number wheel 21 has a plurality of positioning recesses 211 evenly spaced on its rim surface. The claw portions 262 can be selectively positioned on the positioning recesses 211.

[0064] 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 base 33 is mounted on the base 12 corresponding to the position of the knob 31. One end of the lock cylinder 32 is connected to the knob 31, and the other end is inserted into the lock base 33 and can selectively drive the lock base 33 to rotate.

[0065] The control plate assembly 40 includes a number control plate 41, a lock cylinder control plate 42, a support spring 43, and a pair of axle wheels 44. The number control plate 41 abuts against the lock cylinder 32 and selectively presses against each of the wheel springs 23. It should be noted that the axle covers 25 of the number lock mechanism 20 also cover the pair of axle wheels 44, positioning the pair of axle wheels 44 on the base 12.

[0066] In one embodiment of the present invention, the number control piece 41 includes a main push rod 411 surrounding the lock cylinder 32, a plurality of secondary push rods 412 extending laterally from one side of the main push rod 411, and a pushing portion 413 extending downward from each of the secondary push rods 412, the pushing portion 413 abutting against the corresponding wheel spring 23.

[0067] Furthermore, the lock cylinder control piece 42 abuts against the lock seat 33 and selectively abuts against the flat portion 221 or the circular lug 222 of each wheel cylinder 22. The support spring 43 is disposed on the base 12 and elastically presses against the bottom surface of the lock cylinder control piece 42 (see figure). Figure 4 Furthermore, the lock cylinder control plate 42 has a pair of convex shafts 420, and the pair of axle wheels 44 are correspondingly fitted with the pair of convex shafts 420. Accordingly, when the lock cylinder control plate 42 is in contact with the circular lugs 222 of each of the wheel cylinders 22, it can rotate around the pair of convex shafts 420 to lock the lock seat 33.

[0068] In one embodiment of the present invention, the lock cylinder 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 lock cylinder control piece 42 extends outward from the opposite side of the frame plate 421. Furthermore, the lock cylinder control piece 42 has a wheel groove 423 between adjacent protruding fingers 422. Each of the numbered wheels 21 passes through the corresponding wheel groove 423.

[0069] In this embodiment, the dual-lock 1 includes multiple support springs 43. These support springs 43 are disposed on the base 12 and elastically press against the bottom surface of the lock cylinder control plate 42. The convex shafts 421 on both sides of the lock cylinder control plate 42 are respectively fitted with axle wheels 44. Furthermore, the number 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 into the three number wheels 21, and the three wheel cylinder springs 23 elastically press against one side of each wheel cylinder 22 to elastically push against each wheel cylinder 22. Three sets of number wheels 21 and wheel cylinder springs 23 arranged at intervals are sequentially inserted into the wheel rod 24 and are connected to the wheel rod 24 by pressure plates 27 on the left and right sides. The two ends of the wheel rod 24 are disposed on the pair of axle seats 121. In addition, the axle cover 25 covers the two ends of the wheel rod 24 and the axle wheel 44, thereby connecting the lock cylinder control piece 42 and the number lock mechanism 20 in the base 12.

[0070] Furthermore, the lock seat 33 is mounted on the base 12, and the lock cylinder 32 passes through the lock seat 33. The lock cylinder 32 is secured to the base 12 by a plurality of screws 34 and is rotatable relative to the lock seat 33. In addition, the main push rod 411 of the number control plate 41 surrounds the lock cylinder 32, and the secondary push rods 412 are correspondingly inserted between the number wheels 21, so that the pushing portions 413 extending downward from the secondary push rods 412 abut against one side of each wheel cylinder spring 23 (see Figure 1). Figure 5 Accordingly, the user can unlock the lock by rotating the lock cylinder 32 with a key, or by rotating the key lock mechanism 30 to the correct combination of numbers to rotate the lock cylinder 32, so that the double lock 1 can be unlocked.

[0071] Please refer to another source. Figure 6 The diagram shows a plan view of the double-lock mechanism of the present invention when the number wheels are correctly aligned. When the number wheels 21 rotate to the set number combination, the flat portions 221 of the wheel cylinders 22 simultaneously abut against the lock cylinder control plate 42 (see Figure 1). Figure 4 The frame plate 421 of the lock cylinder control piece 42 is inserted flatly outside the lock seat 33 (see...). Figure 3 At this point, the lock cylinder 32 can rotate to unlock. It is worth noting that the protruding ribs 223 of these wheel cylinders 22 disengage from the slots 210 of the corresponding number wheels 21.

[0072] Please refer to this again. Figures 7 to 10 It shows a plan view of the double-lock with incorrect number wheel, a three-dimensional view of the internal structure of the double-lock with incorrect number wheel, and a combined sectional view of the internal structure of the double-lock with incorrect number wheel from both sides. Figure 7As shown, when the number wheels 21 rotate to a non-set number combination, at least one wheel cylinder 22's circular lug 222 will abut against the lock cylinder control plate 42 (see Figure 1). Figure 9 This causes the lock cylinder control plate 42 to be pressed by the circular lug 222 and rotate around the axle wheel 44. At this time, the frame plate 421 of the lock cylinder control plate 42 will lock the outer edge of the lock seat 33 (see...). Figure 8 At this time, the lock seat 33 cannot rotate, and the lock cylinder 32 cannot drive the lock seat 33 to rotate, so that the double lock 1 is in the locked state.

[0073] It should be noted that, as Figure 10 As shown, when the double-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. At this time, the secondary push rods 412 and the pushing part 413 will push against the corresponding wheel cylinder 22, so that the protruding rib 223 of the wheel cylinder 22 is engaged in the slot 210 of the corresponding number wheel 21.

[0074] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A double cylinder lock structure characterized by, include: A lock case comprising a panel and a base that are assembled together, the panel having multiple windows; A number lock mechanism is installed on the base. The number lock mechanism includes multiple number wheels, multiple wheel cylinders passing through the multiple number wheels, multiple wheel cylinder springs, and a wheel rod. The multiple number wheels are spaced apart and partially protrude from the multiple windows. The wheel rod passes through the multiple wheel cylinders. The multiple wheel cylinder springs elastically press against the multiple wheel cylinders respectively. Each wheel cylinder has a flat portion and a circular lug. A key lock mechanism includes a lock base and a lock cylinder. The lock base is mounted on the base, and the lock cylinder is inserted into the lock base and can selectively drive the lock base to rotate. And a control plate assembly, including a lock core control plate, a support spring and a pair of axle wheels. The lock core control plate abuts against the lock seat and selectively abuts against the flat portion or circular lug of each of the wheel cylinders. The support spring elastically presses against the bottom surface of the lock core control plate. The lock core control plate has a pair of convex shafts. The pair of axle wheels fit into the pair of convex shafts. When the lock core control plate abuts against the circular lug of each of the wheel cylinders, it can rotate around the pair of convex shafts to lock the lock seat. The base has a pair of axle seats, and the two ends of the wheel rod are disposed on the pair of axle seats; and the number lock mechanism further includes a pair of axle covers, which cover the two ends of the wheel rod and the pair of axle wheels.

2. The dual-lock structure as described in claim 1, characterized in that, The panel has a perforation, and the key lock mechanism includes a knob protruding from the perforation, with one end of the lock cylinder connected to the knob.

3. The dual-lock structure as described in claim 1, characterized in that, The base has multiple support plates, and the number lock mechanism further includes a positioning plate, which includes an extension and multiple claws spaced apart on opposite sides of the extension. The extension is disposed on the multiple support plates. Each of the numbered wheels has a plurality of positioning recesses spaced at equal intervals on its rim surface, and the plurality of claws can be selectively positioned on the plurality of positioning recesses.

4. The dual-lock structure as described in claim 1, characterized in that, Each of the multiple numbered wheels has multiple slots, and each wheel cylinder has multiple ribs. Each wheel cylinder is able to selectively engage or disengage from the slots of the corresponding multiple numbered wheels via multiple wheel cylinder springs.

5. The dual-lock structure as described in claim 1, characterized in that, The lock cylinder control plate includes a frame plate surrounding the lock seat, a plurality of protruding fingers extending laterally from one side of the frame plate, and the plurality of protruding fingers extending to the bottom side of the corresponding plurality of wheel cylinders.

6. The dual-lock structure as described in claim 5, characterized in that, The lock cylinder control plate has a groove between the adjacent protruding fingers, and each numbered wheel is inserted into the corresponding groove.

7. The dual-lock structure as described in claim 5, characterized in that, The convex shaft of the lock control plate extends outward from the opposite side of the frame plate.

8. The dual-lock structure as described in claim 1, characterized in that, The control plate assembly further includes a numbered control plate that abuts against the lock cylinder and selectively presses against each of the wheel cylinder springs.

9. The dual-lock structure as described in claim 8, characterized in that, The number control plate includes a main push rod that surrounds the lock cylinder, a plurality of secondary push rods that extend laterally from one side of the main push rod, and a push abutting part that extends downward from each of the secondary push rods, the push abutting part abutting against the corresponding plurality of wheel springs.

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