Stacked cylinder lock

Abstract

The present application is a cylinder lock with a lock core seat and a limiting opening; a plurality of leaves and a plurality of shims are arranged alternately in the lock core seat, each leaf forms a limiting block, each shim forms a limiting portion and a rotation-stopping portion, one side of each limiting block abuts against one side of the limiting opening, two sides of each limiting portion abut against two opposite sides of the limiting opening, and each rotation-stopping portion is adjacent to the other side of each limiting block; each shim, because of the rotation-stopping portion, can limit the limiting block in the limiting opening when in the locked state, so that each leaf can be prevented from rotating freely when vibrating due to external force, thereby improving the overall structural stability and avoiding the key from being unable to be inserted correctly due to the rotation of the leaves.

Description

Technical Field

[0001] This invention relates to a lock, and more particularly to a cylindrical lock with a plate-type mechanism. Background Technology

[0002] In existing mechanical locks, please refer to Figure 10 As shown, one type is a rotary cylinder lock (also known as a leaf lock), which has an external lock sleeve (not shown in the figure). Inside the lock sleeve is a lock cylinder 90. The lock cylinder 90 includes a core frame 91, multiple leaf blades 92, multiple washers 93, and a needle roller 94. One end of the core frame 91 forms an accommodating space 911, a limiting opening 912, and an accommodating opening 913, and the other end forms a tongue fixing rod 914. The tongue fixing rod 914 is used to install a tongue (not shown in the figure) and a limiting piece. Each leaf blade 92 has a keyhole. The outer ring side of each leaf blade 92 forms a protrusion 921 and a groove 922. The outer ring side of each washer 93 has a positioning part 931 protruding. The lock cylinder 90 is fan-shaped, with each blade 92 and each washer 93 staggered in the receiving space 911. The protrusion 921 abuts against one side of the limiting opening 912, and the grooves 922 are staggered when viewed from the side. The two sides of the positioning part 931 abut against the opposite two sides of the limiting opening 912. The roller 94 is located at the receiving opening 913. When unlocking, a key (not shown in the figure) is inserted into the keyhole through which each blade 92 passes and rotated 90 degrees clockwise. The teeth on the key that correspond to each blade 92 push the blade 92 to rotate until the grooves 922 of each blade 92 are aligned on the same straight line, so that the roller 94 can enter each groove 922 and the lock cylinder 90 can rotate relative to the lock sleeve to unlock.

[0003] By varying the number of blades 92 and the position of the grooves 922 on the blades 92, the aforementioned paddle-type cylindrical lock can achieve good anti-theft performance, and is therefore frequently used in cabinets and vehicles requiring high anti-theft capabilities. However, the aforementioned lock cylinder structure is a springless structure. Therefore, when the aforementioned paddle-type cylindrical lock is subjected to strong vibrations, especially vibrations caused by poor road conditions in vehicles, each blade 92 is prone to free rotation within its rotation range, making it difficult or impossible to insert the key, or causing the key to be turned before it is fully inserted, resulting in damage or breakage. Therefore, the existing paddle-type cylindrical lock has the aforementioned problems and shortcomings in its overall structure, and needs to be improved. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a plate-type cylindrical lock, which can prevent the blades from rotating freely.

[0005] To achieve the aforementioned objectives, the present invention employs a design of a plate-type cylindrical lock, comprising:

[0006] A locking sleeve, which is a hollow tube;

[0007] A lock cylinder base has a receiving space, a limiting opening and a receiving opening formed around one end, and a fixing rod formed at the other end of the lock cylinder base. The lock cylinder base passes through the lock sleeve and can rotate relative to the lock sleeve.

[0008] Multiple blades, each blade having a keyhole, a limiting block and a groove, the keyhole passing through the blade, the limiting block protruding from the outer ring side of the blade, and the groove recessed into the outer ring side of the blade;

[0009] Multiple gaskets, each gasket comprising a ring body, a limiting portion, an anti-rotation portion and a recess, the ring body being a hollow ring body, the limiting portion protruding along the radial direction of the ring body on the outer ring side surface of the ring body, the anti-rotation portion protruding along the axial direction of the locking sleeve on the limiting portion, the recess being recessed into the outer ring side surface of the ring body, each blade and each gasket being arranged alternately and accommodated in the accommodating space, one side of each limiting block abutting against one side of the limiting opening, two sides of each limiting portion abutting against the opposite two sides of the limiting opening, and each anti-rotation portion being adjacent to the other side of each limiting block;

[0010] A needle roller is positioned at the accommodating opening.

[0011] Furthermore, in the aforementioned plate-type cylindrical lock, each of the gaskets is recessed to form a notch, and each anti-rotation part is a bent piece that protrudes from the notch toward the axial direction of the lock sleeve.

[0012] Furthermore, in the aforementioned plate-type cylindrical lock, the cross-section of each of the anti-rotation parts is V-shaped.

[0013] Furthermore, in the aforementioned plate-type cylindrical lock, each of the anti-rotation parts is a protrusion.

[0014] Furthermore, in the aforementioned plate-type cylindrical lock, the limiting portion is fan-shaped.

[0015] Furthermore, in the aforementioned plate-type cylindrical lock, the ring body further includes a rib that is circumferentially protruding from one side of the ring body and abuts against one of the blades.

[0016] Furthermore, in the aforementioned plate-type cylindrical lock, the lock sleeve surrounds and forms a lock cylinder cavity, a key opening and a mounting hole communicating with the lock cylinder cavity, and a needle groove is formed on the inner wall surface of the lock sleeve, the shape and position of which correspond to the roller needle.

[0017] The advantage of this invention is that, since each gasket has an anti-rotation part, when in the locked state, one side of the limiting opening of each anti-rotation part lock cylinder seat can limit the limiting block of each blade within it, so that even if each blade is subjected to strong vibration, the free rotation of the blade can be greatly reduced, thus improving the overall structural stability. In addition, since the anti-rotation part is like a spring-loaded structure, when the user turns the key to rotate each blade, the limiting block of the blade can easily push against the anti-rotation part, causing it to bend and slide past the anti-rotation part, thereby reducing the rotational resistance when the key is turned. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is an exploded view of the present invention.

[0020] Figure 3 This is an exploded view from another angle of the present invention.

[0021] Figure 4 This is a partial exploded view of the present invention.

[0022] Figure 5 This is a front view of the gasket of the present invention.

[0023] Figure 6 This is a side view of the gasket of the present invention.

[0024] Figure 7 This is a schematic diagram illustrating the use of the present invention.

[0025] Figure 8 This is a partially enlarged view of the present invention.

[0026] Figure 9 This is a schematic diagram of another embodiment of the gasket of the present invention.

[0027] Figure 10 This is a schematic diagram of existing technology. Detailed Implementation

[0028] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means employed by the present invention to achieve its intended purpose.

[0029] Please see Figure 1 As shown, the rotary cylinder lock of the present invention includes a lock sleeve 10, a lock cylinder seat 20, multiple blades 30, multiple washers 40 and a needle roller 50.

[0030] Please see Figure 2As shown, the lock sleeve 10 is a hollow tube that surrounds a lock cylinder cavity 11 and a key opening hole 12 and a mounting hole 13 that communicate with the lock cylinder cavity 11. A pin groove 14 is formed on the inner wall surface of the lock sleeve 10. The pin groove 14 extends along the two ends of the lock sleeve 10 to form a long groove. The lock sleeve 10 is a standard component of the prior art, and its detailed structure will not be described in detail.

[0031] Please see Figure 2 and Figure 3 As shown, one end of the lock cylinder seat 20 is a tube that surrounds a receiving space 21 and a limiting opening 22 and a receiving opening 23 communicating with the receiving space 21. The limiting opening 22 and the receiving opening 23 are both elongated holes and are located on opposite sides. One side of the limiting opening 22 is the first side 221 and the other side is the second side 222. The other end of the lock cylinder seat 20 forms a fixing rod 24 with external threads. The lock cylinder seat 20 is inserted into the lock sleeve 10 with the receiving space 21 at one end and can rotate relative to the lock sleeve 10. A limiting ring 25 and a limiting plate 26 are also fitted on the lock cylinder seat 20 so that the lock cylinder seat 20 can rotate at a specific angle in a specific position. The fixing rod 24 is used to connect a tongue (not shown in the figure). The aforementioned lock cylinder seat 20, limiting ring 25 and limiting plate 26 are standard components of the prior art, and their detailed structure will not be described in detail.

[0032] Please see Figure 3 and Figure 4 As shown, each blade 30 is a circular plate, which has a keyhole 31, a limiting block 32 and a groove 33. The keyhole 31 passes through the blade 30, the limiting block 32 protrudes from the outer ring side of the blade 30, and the groove 33 is recessed into the outer ring side of the blade 30. The distance between the groove 33 and the limiting block 32 of at least two blades 30 is not equal. The blade 30 is a standard component of the prior art, and its detailed structure will not be described in detail.

[0033] Please see Figures 3 to 6As shown, each gasket 40 includes a ring body 41, a limiting part 42, an anti-rotation part 43, and a recess 44. The ring body 41 is a hollow ring-shaped body, and a rib 411 is protruding around one side of the ring body 41. The limiting part 42 is radially protruding on the outer ring side of the ring body 41. Specifically, the limiting part 42 is fan-shaped, and the limiting part 42 is recessed to form a notch 421. The anti-rotation part 43 is protruding along the axial direction of the locking sleeve 10 at the position of the notch 421. In this embodiment, the anti-rotation part 43 is a bent piece with a V-shaped cross section. When viewed from the side, the anti-rotation part 43 protrudes in the opposite direction of the ring body 41 to the rib 411, but this is not a limitation. The form of the anti-rotation part 43 can be changed according to the user's needs. The recess 44 is recessed into the outer ring side of the ring body 41 and located on the opposite side of the limiting part 42. Each blade 30 and each gasket 40 are arranged alternately and accommodated in the accommodating space 21 of the lock cylinder seat 20. Each anti-rotation part 43 is adjacent to one side of each limiting block 32. The two sides of each limiting part 42 abut against the first side 221 and the second side 222 of the limiting opening 22. The aforementioned blades 30 have the following two arrangement states: when the present invention is in the locked state, the other side of each limiting block 32 abuts against the first side 221 of the limiting opening 22, and the grooves 33 are not completely located on the same straight line. When the present invention is in the unlocked state, some blades 30 are rotated so that the grooves 33 are arranged on the same straight line.

[0034] Please see Figure 1 and Figure 2 As shown, the needle roller 50 is positioned at the receiving opening 23. Specifically, the needle roller 50 is located between the needle groove 14 of the locking sleeve 10 and the receiving opening 23. The shape and position of the needle roller 50 correspond to the shape and position of each groove 33.

[0035] Please see Figure 7 and Figure 8 As shown, the locking and unlocking mechanism of this invention, using a key, is similar to existing technology and will not be described in detail here. The pads 40 not only reduce frictional resistance between the blades 30, but also, because each pad 40 has an anti-rotation portion 43, when locked, the anti-rotation portion 43 and the first side 221 of the limiting opening 22 can confine the limiting block 32 of each blade 30 within it. This significantly reduces the free rotation of the blades 30 even under strong vibrations. In other words, even if the blades 30 rotate, the rotation amplitude is very small, not affecting the insertion of the key or preventing it from being fully inserted. Therefore, it improves the overall structural stability and prevents the blades 30 from rotating significantly. Furthermore, because the anti-rotation portion 43 is like a spring-loaded structure, when the user turns the key to rotate the blades 30, the limiting block 32 of the blades 30 can easily push against the anti-rotation portion 43, causing it to bend and slide past the anti-rotation portion 43, thus reducing the rotational resistance when the key is turned.

[0036] Please see Figure 9 As shown, this is another embodiment of the present invention. The main difference is that the limiting part 42A of the gasket 40A does not form a notch 421, and the anti-rotation part 43A is a protrusion that protrudes from one side of the limiting part 42A. In this way, the same effect of preventing the blade 30 from rotating significantly due to vibration can also be achieved.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications or alterations to the above-disclosed technical content as equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A type of cylindrical lock with multiple plates, characterized in that, Include: A locking sleeve, which is a hollow tube; A lock cylinder base has a receiving space, a limiting opening and a receiving opening formed around one end, and a fixing rod formed at the other end of the lock cylinder base. The lock cylinder base passes through the lock sleeve and can rotate relative to the lock sleeve. Multiple blades, each blade having a keyhole, a limiting block and a groove, the keyhole passing through the blade, the limiting block protruding from the outer ring side of the blade, and the groove recessed into the outer ring side of the blade; Multiple gaskets, each gasket comprising a ring body, a limiting portion, an anti-rotation portion, and a recess. The ring body is a hollow ring. The limiting portion protrudes radially from the outer ring side of the ring body. The anti-rotation portion protrudes axially from the limiting portion. The recess is recessed into the outer ring side of the ring body. Each blade and each gasket is arranged alternately and accommodated in the accommodating space. One side of each limiting block abuts against one side of the limiting opening. Two sides of each limiting portion abut against the opposite two sides of the limiting opening. Each anti-rotation portion is adjacent to the other side of each limiting block. Each gasket is recessed to form a notch. Each anti-rotation portion is a bent sheet and protrudes from the notch toward the axial direction of the lock sleeve. A needle roller is positioned at the accommodating opening.

2. The plate-type cylindrical lock as described in claim 1, characterized in that, The cross-section of each anti-rotation part is V-shaped.

3. The plate-type cylindrical lock as described in claim 1, characterized in that, Each of the anti-rotation parts is a convex point.

4. The plate-type cylindrical lock as described in any one of claims 1 to 3, characterized in that, The limiting part is fan-shaped.

5. The plate-type cylindrical lock as described in claim 4, characterized in that, The ring body further includes a rib that is circumferentially protruding from one side of the ring body and abuts against one of the blades.

6. The plate-type cylindrical lock as described in claim 5, characterized in that, The lock sleeve surrounds a lock cylinder cavity and communicates with the lock cylinder cavity through a key opening and a mounting hole. A needle groove is formed on the inner wall surface of the lock sleeve, and the shape and position of the needle groove correspond to the roller.

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