An interlocking pin free-spinning lock body and its key

Abstract

An interlocking pin free-spinning lock body and its key of the present invention belong to the technical field of locks, and particularly relate to a free-spinning lock body and a key with interlocking pins. The inside of the lock shell assembly has a cavity, in which an inner lock core assembly and an outer lock core assembly are successively arranged, and the rear end of the outer lock core assembly is connected to the output assembly; the key of the interlocking pin free-spinning lock body is provided with a key rack gear, and several key rack components are arranged inside the key rack gear. The key rack components correspond one by one to the through holes on the front inner lock core of the interlocking pin free-spinning lock body, and the several key rack components. The purpose of the present invention is to provide an interlocking pin free-spinning lock head and a key, which solve the problems that ordinary lock cores are easily violently opened by unlocking tools, the pins or blades are separately arranged and are easily cracked to open the lock core and the mutual opening rate is relatively high. At the same time, problems such as low strength of the lock are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of locks, and particularly relates to an idling lock body and a key with interlocking pins. Background Art

[0002] The idling lock head of the lock core has a good effect on preventing technical unlocking and forced torsion unlocking. However, the idling lock heads of the lock cores currently on the market have the following defects: First, most of them adopt a keyhole that penetrates the lock core in a straight line or a similar shape, which destroys the structural strength of the lock core. When using a high-strength unlocking tool to replace the key and insert it into the lock hole to pry and twist, the lock head can be easily opened violently; Second, most of them adopt a structure in which independent pins or blades are arranged longitudinally in a straight line. This structure is easy to be tested by being toggled one by one to crack and open the lock core. And due to the limitation of the internal space of the lock core, the key quantity is low and the mutual opening rate is high. People's property safety is threatened, and it is difficult to ensure the safety level of the lock head. Summary of the Invention

[0003] The purpose of the invention is to provide an interlocking pin idling lock head and a key, which solve the problems that the ordinary lock core is easily opened violently by unlocking tools, the pins or blades are set independently and are easily cracked to open the lock core and the mutual opening rate is relatively high. At the same time, the problems such as low strength of the lock are solved.

[0004] To achieve the above purpose, the invention provides the following technical solutions:

[0005] An interlocking pin idling lock body includes a lock shell assembly. One end of the lock shell assembly is provided with a keyhole, and the other end of the lock shell assembly is connected with an output assembly. The output assembly is connected with a lock tongue through a link mechanism. Its characteristics are as follows: The inside of the lock shell assembly has a cavity. An inner lock core assembly and an outer lock core assembly are sequentially arranged in the cavity. The rear end of the outer lock core assembly is connected with the output assembly; The inner lock core assembly is sequentially provided with a front inner lock core, a middle inner lock core and a rear inner lock core. The front inner lock core is provided with a plurality of through holes, and a first locking mechanism composed of a plurality of pins is arranged in the through holes. The first locking mechanism is arranged in the keyhole on the lock shell assembly; The front inner lock core is connected with the middle inner lock core through the pins on the first locking mechanism, and the middle inner lock core and the rear inner lock core are connected through the pins on the second variable diameter mechanism; The outer lock core assembly is an annular structure with an opening and is sleeved on the rear inner lock core.

[0006] Preferably, there are a number of through holes on the front inner lock core of the inner lock core assembly that can receive the first locking mechanism. A front cavity is provided in the front inner lock core, and the first locking mechanism is disposed between the first locking mechanism cavity and the front cavity. A side post groove is provided on the outer side wall of the middle inner lock core, and a T-shaped groove is provided on the outer side wall of the rear inner lock core. One end of a side post is provided in the side post groove, and the other end of the side post is disposed in the T-shaped groove. A second locking mechanism cavity is provided at the rear side of the middle inner lock core, and a rear cavity is provided at the front side of the rear inner lock core, and the second locking mechanism is disposed between the second locking mechanism cavity and the rear cavity.

[0007] A first diameter-changing mechanism is provided on the outer side wall of the middle inner lock core. Combination snap ring ball group springs are provided on both sides of the first diameter-changing mechanism, and the first diameter-changing mechanism cooperates with the combination snap ring ball group springs.

[0008] Preferably, there are 5 balls on the first locking mechanism. Corresponding to the second locking mechanism, there are also 5 balls on the first diameter-changing mechanism and the second diameter-changing mechanism. The balls on the first locking mechanism are of a crank structure. A crank ball spring is provided on one side of the bent portion of the crank. The crank ball spring is installed in the crank ball spring groove on the middle inner lock core. One end of each crank ball is provided with a crank ball groove with different positions. A main shaft is provided at the center of the second locking mechanism. There are 5 spring installation depressions along the circumferential direction of the main shaft. 5 interlocking ball springs are provided in the spring installation depressions. A rear collar and a front collar are sequentially sleeved at the bottom of the main shaft. Collar teeth are provided on the rear collar and the front collar. A total of 5 interlocking balls are provided on the outer circumference of the rear collar and the front collar. Trajectory grooves are provided on each of the interlocking balls, and the trajectory grooves correspond to the collar teeth one by one.

[0009] The first diameter-changing mechanism and the second diameter-changing mechanism have the same structure. The first diameter-changing mechanism is composed of 5 combination snap ring balls to form an annular structure. The 5 combination snap ring balls are combined with each other by curved surfaces. Wedge-shaped pins are provided on both sides of each combination snap ring ball. Snap ring ball teeth are provided inside the inner diameter of each combination snap ring ball. Combination snap ring ball group springs are provided on both axial sides of the first diameter-changing mechanism and the second diameter-changing mechanism. By pushing the wedge-shaped pins of each combination snap ring ball inward, side post grooves are provided on the outer sides of the first diameter-changing mechanism and the second diameter-changing mechanism, and side posts are provided in the side post grooves.

[0010] Preferably, the outer lock core assembly includes an outer lock core with an annular structure having an opening and an idle lock pin. The idle lock pin is T-shaped and fixed to the outside of the side post.

[0011] Preferably, two spring holes are provided on the outer side wall of the lock shell main body. Springs are provided in the spring holes. A top bead is provided at the bottom of each spring. One top bead presses on the side post, and the other top bead presses on the idle lock pin.

[0012] A key for the interlocking pin tumbler free-spinning lock body as described above, characterized in that: the key is provided with a key rack gear, and a number of key rack components are arranged inside the key rack gear. The key rack components correspond one by one to the through holes on the front inner lock core of the interlocking pin tumbler free-spinning lock body. The number of key rack components...

[0013] Preferably, the key includes a key outer sleeve, a key inner sleeve is arranged inside the key outer sleeve, a key rack gear is arranged in the key inner sleeve, a key spring is arranged between the key inner sleeve and the key rack gear, and the key inner sleeve is coaxially fixed with the key rack gear and the key outer sleeve.

[0014] Preferably, a button is arranged on the key outer sleeve, a hook groove is arranged on the key inner sleeve, a key inner sleeve hook is arranged on the key rack gear, a positioning protrusion is arranged on the key inner sleeve hook, and the button presses on the inner sleeve hook.

[0015] Preferably, a key inner sleeve groove is arranged on the key inner sleeve; an outer mark is arranged on the front surface of the lock shell body, and the key inner sleeve groove corresponds to the outer mark.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Due to the adoption of a keyhole with a porous structure and the alignment mark of the lock shell body and the rotatable inner lock core to correctly unlock the position, it can prevent burglars from using violent impact on the inner lock core assembly and the output assembly to achieve the function of rotating and unlocking. The anti-theft performance is stronger, and it is also more convenient to use the correct key to unlock, improving the unlocking efficiency of the correct key.

[0018] 2. The outer tumblers with a new type of crank structure and the supporting crank tumbler springs are adopted, and the interlocking pin tumbler components are used. In such a structure, burglars cannot obtain the feel of pushing the crank tumblers and crack them one by one. And due to the combination of the crank tumbler group and the interlocking pin tumbler group, not only can the grooves on the crank tumblers be encrypted, but also the depth and sequence of their being pushed are encrypted again through the arrangement and combination of the interlocking pin tumblers to obtain a huge key amount. Therefore, it is possible to completely prevent the technical unlocking of this lock with unlocking tools.

[0019] [[ID=

[0020] 4. In the locked state, the crank ball component and the interlock ball component push the new combined snap ring ball component radially outward, causing it to engage with the groove in the lock case body. At this time, the snap ring function of the combined snap ring ball sub-component can also keep the lock case body and the inner lock core component in the assembled state. Its simultaneous action with the snap ring on the lock case body can make the assembly between the lock case body and the inner lock core component of this lock more firm and reliable.

[0021] 5. Due to the adoption of a protective sleeve with a capsule shape and the realization of hiding the key rack in the capsule-shaped protective sleeve when the key is in the non-use state through the built-in spring structure, and the capsule-shaped protective sleeve of the key is small in volume and can be designed into various beautiful styles for carrying close to the body. Therefore, it can completely prevent the key of the key rack from being recorded by means such as taking pictures and then the key being copied, and makes up for the inconvenience of the large volume of the existing key and not being easy to carry around. Carrying the key close to the body can completely avoid many troubles caused by forgetting the key and ensure the safety of people's property. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an axonometric exploded view of the lock head and key of the interlock ball idle-turn lock of the present invention;

[0023] Figure 2 is an axonometric exploded view of the inner lock core component of the lock head of the interlock ball idle-turn lock of the present invention;

[0024] Figure 3 is an axonometric exploded view of the interlock ball component of the lock head of the interlock ball idle-turn lock of the present invention;

[0025] Figure 4 is an axonometric exploded view of the matching key of the lock head of the interlock ball idle-turn lock of the present invention;

[0026] Figure 5 is an axonometric view of the crank ball of the present invention;

[0027] Figure 6 is a front view of the locked state of the lock head and key of the interlock ball idle-turn lock of the present invention;

[0028] Figure 7 is Figure 6 a cross-sectional view of the lock case body A-A;

[0029] Figure 8 is Figure 6 a cross-sectional view of the inner lock core component, transmission mechanism and key A-A;

[0030] Figure 9 is Figure 6 a cross-sectional view of A-A;

[0031] Figure 10 is Figure 6 A B-B cross-sectional view of the inner lock core assembly without a locking mechanism and a diameter-changing mechanism;

[0032] Figure 11 is Figure 9 A C-C cross-sectional view;

[0033] Figure 12 is Figure 9 A D-D cross-sectional view;

[0034] Figure 13 is Figure 9 An E-E cross-sectional view;

[0035] Figure 14 is Figure 9 An F-F cross-sectional view;

[0036] Figure 15 is Figure 9 A G-G cross-sectional view;

[0037] Figure 16 is Figure 9 An H-H cross-sectional view;

[0038] Figure 17 is Figure 9 An I-I cross-sectional view;

[0039] Figure 18 is Figure 9 A J-J cross-sectional view;

[0040] Figure 19 is Figure 9 A K-K cross-sectional view;

[0041] Figure 20 A front view of the interlocking pin tumbler idling lock lock head and key in the open state of the present invention;

[0042] Figure 21 is Figure 20 A A*-A* cross-sectional view of the inner lock core assembly, transmission mechanism and key;

[0043] Figure 22 is Figure 20 An A*-A* cross-sectional view;

[0044] Figure 23 is Figure 22 A C*-C* cross-sectional view;

[0045] Figure 24 is Figure 22 A D*-D* cross-sectional view;

[0046] Figure 25 is Figure 22 An E*-E* cross-sectional view;

[0047] Figure 26 is Figure 22 the F*-F* sectional view;

[0048] Figure 27 is Figure 22 the G*-G* sectional view;

[0049] Figure 28 is Figure 22 the H*-H* sectional view;

[0050] Figure 29 is Figure 22 the I*-I* sectional view;

[0051] Figure 30 is Figure 22 the J*-J* sectional view;

[0052] Figure 31 and Figure 32 is the isometric view of the combined snap ring ball subassembly in the unlocked state of the present invention;

[0053] Figure 33 is Figure 32 the L*-L* sectional view;

[0054] Figure 34 and Figure 35 is the isometric view of the combined snap ring ball subassembly in the locked state of the present invention;

[0055] Figure 36 is Figure 35 the L-L sectional view;

[0056] Figure 37 is the isometric view of the interlocking ball subassembly in the locked state of the present invention;

[0057] Figure 38 is Figure 37 the M-M sectional view;

[0058] Figure 39 is Figure 37 the N-N sectional view;

[0059] Figure 40 is Figure 37 the O-O sectional view;

[0060] Figure 41 is Figure 37 the P-P sectional view;

[0061] Figure 42 is Figure 37 the Q-Q sectional view;

[0062] Figure 43Is an isometric view of the interlocking ball component in the unlocked state of the present invention;

[0063] Figure 44 Is Figure 43 The M*-M* cross-sectional view of;

[0064] Figure 45 Is Figure 43 The N*-N* cross-sectional view of;

[0065] Figure 46 Is Figure 43 The O*-O* cross-sectional view of;

[0066] Figure 47 Is Figure 43 The P*-P* cross-sectional view of;

[0067] Figure 48 Is Figure 43 The Q*-Q* cross-sectional view of;

[0068] Figure 49 Is Figure 9 The R-R cross-sectional view of;

[0069] Figure 50 Is Figure 9 The S-S cross-sectional view of;

[0070] Figure 51 Is Figure 9 The T-T cross-sectional view of;

[0071] Figure 52 Is Figure 9 The U-U cross-sectional view of;

[0072] Figure 53 Is Figure 9 The V-V cross-sectional view of.

[0073] 1. Lock housing assembly, 11. Lock housing body, 12. Snap ring, 121. Snap ring inner groove, 122. Snap ring limit groove, 13. First top bead spring, 14. Second top bead spring, 15. First top bead, 16. Second top bead, 17. Lock housing insert, 110. Outer mark, 111. Tubular opening, 112. Opening, 113. Shoulder, 114. Outlet groove, 115. Lock pin groove, 116. Annular groove, 117. Snap ring groove, 118. Dovetail groove, 119. First spring hole, 119 * . Second spring hole;

[0074] 2. Inner lock core assembly, 211. Front inner lock core, 2111. Inner mark, 2112. Flange, 2113. Crank ball front opening, 2114. Convex tooth, 2115. Front end cavity, 2116. Pentagon groove, 212. Middle inner lock core, 212 *. Crank pin limit post, 2120. Side post groove, 2120 * . Orientation tooth, 2121. First locking mechanism cavity, 2122. Middle wedge pin groove, 2123. Rear opening of crank pin, 2124. Concave tooth, 2125. Flange neck, 2126. Spring groove for front pin group, 2127. Second locking mechanism cavity, 2128. Spring groove for crank pin, 2129. Variable diameter mechanism groove, 213. Rear inner lock core, 2131. T-shaped groove, 2132. Rear wedge pin groove, 2133. Rear end cavity, 2134. Rear main shaft hole, 2135. Spring groove for rear pin group, 214. Side post, 220. First locking mechanism, 221. First crank pin, 222. Second crank pin, 223. Third crank pin, 224. Fourth crank pin, 225. Fifth crank pin, 226. Crank pin spring, 2200. Crank pin groove, 230. First variable diameter mechanism, 231. First combined snap ring pin, 2311. First side post pushing projection, 232. Second combined snap ring pin, 2321. Second side post pushing projection, 233. Third combined snap ring pin, 234. Fourth combined snap ring pin, 235. Fifth combined snap ring pin, 236. Spring for combined snap ring pin group, 2361. Spring piece, 2300. Snap ring pin tooth, 2301. Pressing tooth, 2302. Pressing groove, 2303. Wedge-shaped pin, 240. Second locking mechanism, 241. First interlocking pin, 2411. First interlocking pin groove, 2412. First track groove, 2413. First guiding projection, 242. Second interlocking pin, 2421. Second interlocking pin groove, 2422. Second track groove, 2423. Second guiding projection, 243. Third interlocking pin, 2431. Third interlocking pin groove, 2432. Third track groove, 2433. Third guiding projection, 244. Fourth interlocking pin, 2441. Fourth interlocking pin groove, 2442. Fourth track groove, 2443. Fourth guiding projection, 245. Fifth interlocking pin, 2451. Fifth interlocking pin groove, 2452. Fifth track groove, 2453. Fifth guiding projection, 246. Main shaft, 2461. Spring installation depression, 2462. Main shaft shoulder, 247. Rear collar, 2471. First rear collar tooth, 2472. Second rear collar tooth, 248. Front collar, 2481. First front collar tooth, 2482. Second front collar tooth, 2483. Third front collar tooth, 249. Interlocking pin spring, 250. Second variable diameter mechanism;

[0075] 3. Outer lock core assembly, 31. Outer lock core, 311. Outer lock core limit groove, 312. Outer lock core groove, 32. Idle rotation lock pin;

[0076] 4. Output assembly, 41. Rotating body, 42. Connecting column;

[0077] 5. Key assembly, 51. Key outer sleeve, 511. First cavity, 512. Receiving teeth, 513. Button slot, 514. Bolt hole, 52. Key inner sleeve, 521. Key inner sleeve groove, 522. Third hole, 523. Axial groove, 524. Circumferential groove, 525. Second cavity, 526. Spring groove, 527. Limit groove, 530. Key rack assembly, 54. Key rack wheel, 541. Second hole, 542. Third spring hole, 543. Hook slot, 55. Button, 56. Key inner sleeve hook, 561. Positioning protrusion, 57. Key bolt, 58. Key spring. Detailed implementation mode

[0078] Please refer to Figures 1 - 53 , the present invention provides a technical solution: an interlocking pin tumbler free-spinning lock head and its key;

[0079] Refer to Figure 1 , 2, 3 and 4, the interlocking pin tumbler free-spinning lock head includes a lock shell assembly 1, an inner lock core assembly 2, an outer lock core assembly 3 and an output assembly 4, as well as a supporting key assembly 5.

[0080] Refer to Figure 1 , the lock shell assembly 1 includes a lock shell body 11, a snap ring 12, a first top bead spring 13, a second top bead spring 14, a first top bead 15, a second top bead 16 and a lock shell insert 17; wherein the first pressing mechanism in the first spring hole 119 is the fixed first top bead spring 13 and the first top bead 15, and the second spring hole 119 * inside the second pressing mechanism is the fixed second top bead spring 14 and the second top bead 16, the top bead springs are supported on the lock shell insert 17, and the first top bead 15 presses the side post 214, and the second top bead 16 presses the free-spinning lock pin 32, so as to push the side post 214 and the free-spinning lock pin 32 radially inward along the lock shell body 11.

[0081] Refer to Figure 1 , 7, 8 and 9, the lock shell body 11 defines a tubular opening 111 extending in its length, the tubular opening 111 is configured to receive the shape of the cylindrical inner lock core assembly 2, and includes a shoulder 113 around the opening 112, as Figure 6 shown, the shoulder 113 engages with the flange 2112 at one end of the front inner lock core 211.

[0082] Refer to Figure 7 and 9, the rear end of the lock housing body 11 is configured to receive an outlet groove 114 of the outer lock cylinder assembly 3 with a diameter larger than the opening 112. Therefore, the tubular opening of the lock housing body for receiving the lock cylinder assembly has a structure with a smaller outer diameter and a larger inner diameter. Such a design effectively strengthens the structure of the lock housing in the keyhole direction, and can effectively make up for the defect of poor anti-theft performance of the existing lock head when facing violent opening means such as drilling, twisting, and prying the lock cylinder with a high-strength illegal key. When there is no key inserted or an incorrect key is inserted, the side posts 214 are radially outwardly pushed by the first combined retaining ring ball 231 and the second combined retaining ring ball 232 along the inner lock cylinder assembly 2. The side posts 214 radially outwardly push the idle lock pin 32, and the rotational locking of the inner lock cylinder assembly 2 relative to the outer lock cylinder assembly 3 is released. The inner lock cylinder assembly 2 can rotate arbitrarily. At the same time, as Figure 9 and 13 shown, the idle lock pin 32 engages with the lock pin groove 115 to rotationally lock the outer lock cylinder 31 relative to the lock housing body 11. At this time, the rotation of the inner lock cylinder assembly 2 cannot drive the output assembly 4 fixed on the outer lock cylinder assembly 3. Furthermore, it cannot drive the existing mechanisms such as cams or linkages connected to the output assembly 4 to adjust the lock tongue to the unlocking position, thus achieving the purpose of illegal unlocking. See Figure 7 and 9 , two annular grooves 116 are provided in the middle section of the tubular opening 111, and they extend circumferentially along the inner wall surface of the tubular opening 111. When the outer lock cylinder assembly 3 is in a state of being rotationally locked relative to the lock housing assembly 11, the first variable diameter mechanism 230 is radially outwardly pushed by the first locking mechanism 220 along the inner lock cylinder assembly 2. And the second variable diameter mechanism 250 is radially outwardly pushed by the second locking mechanism 240 along the inner lock cylinder assembly 2. The first variable diameter mechanism 230 and the second variable diameter mechanism 250 respectively engage with the annular groove 116. So that the inner lock cylinder assembly 2 is maintained in the Figure 6 shown assembled state.

[0083] See Figure 1 , 7, 9 and 22, the lock housing body 11 includes a dovetail groove 118 extending along its side surface and a retaining ring groove 117, a first spring hole 119 and a second spring hole 119 extending radially inwardly and communicating with the tubular opening 111 * . When the retaining ring 12 engages with the retaining ring groove 117 on the side surface of the lock housing body 11, the retaining ring 12 engages with the outer lock cylinder limiting groove 311 of the outer lock cylinder 31, so that the outer lock cylinder assembly 3 is maintained in the Figure 9 and 22 shown assembled state. At this time, the dovetail groove 118 is aligned with the retaining ring limiting groove 122 on the side surface of the retaining ring 12. Inserting the lock housing insert 17 into the dovetail groove 118 can keep the retaining ring 12 in the Figure 9 , 11, 22 and 23 shown assembled state. A retaining ring inner groove 121 is also provided on the inner side of the retaining ring 12. When the lock is in the locked state, the idle lock pin 32 is snapped into the retaining ring inner groove 121.

[0084] See also Figure 6 9 and 22, an external marking 110 is provided on the outer surface of the lock housing body 11 at a position corresponding to the idle lock pin 32. This external marking 110 can be coordinated with an internal marking 2111 on the outer surface of the front inner lock cylinder 211, allowing the idle lock pin 32 to be aligned with the side post 214 before inserting the correct key. This facilitates unlocking. Staggering them when locked also increases the number of keys available for the lock cylinder. In the illustrated embodiment, when the lock cylinder is assembled, the triangular marking on the outer surface of the lock housing body 11 indicates the position of the idle lock pin 32, and the triangular marking adjacent to the circular marking on the outer surface of the front inner lock cylinder 211 indicates the position of the side post 214. Before using the correct key to unlock, the two markings can be aligned to quickly open the lock cylinder. This design effectively compensates for the poor key alignment efficiency of existing idle lock cylinders, improving unlocking efficiency and making it easier for people to use.

[0085] See also Figure 1 , 2, 8, 9, 10, 21 and 22, the inner lock core assembly 2 includes a front inner lock core 211, a middle inner lock core 212, a rear inner lock core 213, a side column 214, a first locking mechanism 220, a first diameter-changing mechanism 230, a second locking mechanism 240 and a second diameter-changing mechanism 250.

[0086] See also Figure 2 and 10 The front inner lock core 211 includes a plurality of crank pin front openings 2113 that extend axially along the front inner lock core 211 and are distributed in a circular pattern. This keyhole design can effectively compensate for the poor anti-theft performance of a slotted or similar shaped keyhole when a strong illegal key is used to drill, twist, pry, or other violent means to open the lock core. Figure 8 , 9, 10, 21 and 22, the other end of the front inner lock core 211 is configured to receive the front end cavity 2115 of the flange neck 2125 on the front end of the middle inner lock core 212, and a plurality of convex teeth 2114 of the same size are provided along the inner side surface of the front end cavity 2115, and the convex teeth 2114 are engaged with the concave teeth 2124 on the outer side surface of the flange neck 2125 on one end of the middle inner lock core 212, and the front inner lock core 211 and the middle inner lock core 212 can be linked in the assembled state. This design allows the internal mark 2111 on the surface of the front inner lock cylinder 211 and the side column groove 2120 of the receiving side column 214 on the surface of the middle inner lock cylinder 212 to be reset without changing the position of the pin grooves and the pin arrangement of the internal crank pin and interlocking pin by adjusting the assembly position of the convex tooth 2114 and the concave tooth 2124. For example, the key quantity of the lock head can be simply increased by aligning the square mark on the outer surface of the front inner lock cylinder 211 with the side column groove 2120.

[0087] See alsoFigure 10 and 19 , on the planes of the bottom of the front cavity 2115 and the flange neck 2125 on the middle inner lock core 212 engaged therewith, a pentagonal groove 2116 and a first locking mechanism cavity 2121 for receiving the first locking mechanism 220 are configured. A set of crank pin rear openings 2123 with diameters slightly larger than the circular cross-section diameter of the first locking mechanism 220 are defined at the bottom of the first locking mechanism cavity 2121. And a crank pin spring groove 2128 for receiving the crank pin spring 226. Therefore, in the assembled state, each crank pin is simultaneously pushed axially outward by the crank pin spring and the interlocking pin spring, and they do not interfere with each other.

[0088] See Figure 2 and 5 , the first locking mechanism 220 is composed of a first crank pin 221, a second crank pin 222, a third crank pin 223, a fourth crank pin 224, and a fifth crank pin 225. The shapes of the crank pins are the same, and each includes a crank and two pin shafts at its two ends with different axes. The five crank pins are circumferentially arranged outside the crank pin limit posts 212 in the first locking mechanism cavity 2121 * . Taking the third crank pin 223 as an example, one side of the pin shaft is in a smooth cylindrical shape, and the diameter of its cross-sectional circle is slightly smaller than the diameter of the crank pin front opening 2113 on the front inner lock core 211. A crank pin groove 2200 that can cooperate with the snap ring pin teeth 2300 is provided on the cylindrical side of the other side of the pin shaft, which will be introduced in detail later. And the other first crank pin 221, second crank pin 222, fourth crank pin 224, and fifth crank pin 225 all have structures for cooperating with the combined snap ring pins, but the distance between the crank pin groove 2200 on the cylindrical side of the pin shaft and the crank is related to the key setting of the key rack assembly 530. Such a design effectively makes up for the defect that the existing lock core is easily tested by being toggled one by one and thus cracked to open the lock core.

[0089] See Figure 8 , 9, 10, 21 and 22, the other end of the middle inner lock core 212 is a second locking mechanism cavity 2127 for receiving the second locking mechanism 240, and a front main shaft hole 2121 for receiving the main shaft 246 is provided at the bottom of the cavity *On the side of the inner lock core 212, a circular variable diameter mechanism groove 2129 for receiving the first variable diameter mechanism 230 and the combined snap ring ball group spring 236 and three front ball group spring grooves 2126 are provided along the circumference. The wedge pin groove includes a front wedge pin groove, a middle wedge pin groove 2122, and a rear wedge pin groove 2132; on both sides of the variable diameter mechanism groove 2129, there are front wedge pin grooves (not shown in the figure) that are radially inward along the inner lock core 212 for receiving the wedge pins 2303 of the first variable diameter mechanism 230. The front wedge pin grooves are circumferentially distributed on both sides of the variable diameter mechanism groove 2129, which has the effect of orienting the wedge pins 2303 of the first variable diameter mechanism 230, and its effect is the same as that of the middle wedge pin groove 2122 and the rear wedge pin groove 2132 on the wedge pins 2303 of the second variable diameter mechanism 250. On the side of the inner lock core 212, a side post groove 2120 for receiving the side post 214 is provided along its axial direction. At the same time, a middle wedge pin groove 2122 is also provided at the rear end of the inner lock core 212.

[0090] See Figure 2 , 8, 9, 10, 21 and 22, one end of the rear inner lock core 213 is configured to receive the rear cavity 2133 of the second locking mechanism 240 and the rear wedge pin groove 2132 for receiving the second variable diameter mechanism 250. And a rear main shaft hole 2134 for receiving the main shaft 246 is provided at the center position of its bottom surface. The side surface of the rear inner lock core 213 is configured to receive the rear ball group spring groove 2135 of the combined snap ring ball spring 236 and a T-shaped groove 2131 that is axially configured to receive the side post 214. The number of the ball group spring grooves is 4, and they are all symmetrically distributed on both sides of the first variable diameter mechanism 230 and the second variable diameter mechanism 250, so as to use the spring piece 2361 to squeeze the wedge pin 2303 inward. As Figure 2 , 8, 9, 21 and 22 show that in addition to its inherent function of controlling the position of the side post 214 and keeping the inner lock core assembly 2 in the assembled state in the locked state, the second variable diameter mechanism 250 between the inner lock core 212 and the rear inner lock core 213 also has the function of a coupling, enabling the inner lock core 212 and the rear inner lock core 213 to rotate coaxially.

[0091] In the illustrated embodiment, see Figure 1, 2, 31, 32, 33, 34, 35 and 36, both the first diameter-changing mechanism 230 and the second diameter-changing mechanism 250 include a first combined snap ring ball 231, a second combined snap ring ball 232, a third combined snap ring ball 233, a fourth combined snap ring ball 234 and a fifth combined snap ring ball 235. Taking the fifth combined snap ring ball 235 as an example, there are snap ring ball teeth 2300 inside the semi-circular combined snap ring ball, and there is a wedge-shaped pin 2303 on each side of the semi-circular combined snap ring ball. The pin is slightly smaller than the front wedge-shaped pin groove, the middle wedge-shaped pin groove 2122 and the rear wedge-shaped pin groove 2132. For example, a set of pushing teeth 2301 and pushing grooves 2302 are provided at each end of the fifth combined snap ring ball 235. The pushing teeth 2301 and the pushing grooves 2302 form the entire pushing mechanism, and the pushing teeth 2301 and the pushing grooves 2302 of different combined snap ring balls can cooperate with each other to complete the pushing. See Figure 2 , 16 and 28, each wedge-shaped pin of the second diameter-changing mechanism 250 is pushed radially inward by the spring piece 2361 of the combined snap ring ball group spring 236. See Figure 8 , 9 and 14, in the locked state, the cylindrical side surface of the third crank ball 223 is tangent to the snap ring ball teeth 2300, the fifth combined snap ring ball 235 is pushed radially outward, and is engaged with the annular groove 116 inside the tubular opening 111 of the lock housing body 11. At the same time, the pushing teeth 2301 and the pushing grooves 2302 at both ends of the fifth combined snap ring ball 235 will cooperate with the pushing teeth 2301 and the pushing grooves 2302 of the adjacent third combined snap ring ball 233 and the fourth combined snap ring ball 234, so that the two are pushed radially outward and engaged in the annular groove 116. Similarly, the third combined snap ring ball 233 and the fourth combined snap ring ball 234 push the first combined snap ring ball 231 and the second combined snap ring ball 232 radially outward through the pushing teeth 2301 and the pushing grooves 2302 thereon. This chain reaction causes the first side post pushing protrusion 2311 and the second side post pushing protrusion 2321 to push the side post 214 radially outward, and by pushing the idle lock pin 32 radially outward, the idle lock pin 32 is snapped into the lock pin groove 115 to keep the outer lock core 31 locked relative to the lock housing body 11 in rotation.

[0092] See Figure 21, 22 and 26, also taking the fifth combined retaining ring ball 235 as an example, when the correct key is inserted into the front opening 2113 of the crank ball of the inner lock core assembly 2, when the first locking mechanism 220 axially moves sequentially to the unlocking position in response to the inserted key, the combined retaining ring ball spring 236 radially pushes the first diameter-changing mechanism 230 inward. The retaining ring ball teeth 2300 of the combined retaining ring ball engage with the crank ball groove 2200, and when the retaining ring ball teeth 2300 of the first diameter-changing mechanism 230 and the corresponding crank ball groove 2200 of the first locking mechanism 220 are simultaneously engaged, the combined retaining ring ball spring 236 radially pushes the first diameter-changing mechanism 230 inward to engage with the inner side of the annular groove 116. The first side post pushing protrusions 2311 of the first combined retaining ring ball 231 and the second combined retaining ring ball 232 are aligned with the second side post pushing protrusions 2321 and are aligned with the side post groove 2120 of the middle inner lock core 212. See Figure 23 , 21, 25, 26 and 27, the side post 214 is radially pushed inward by the first top bead 15 along the lock shell body 11 to engage with the first side post pushing protrusion 2311, the second side post pushing protrusion 2321 and the side post groove 2120. At the same time, the idle lock pin 32 is also radially pushed inward by the second top bead 16 along the lock shell body 11 to simultaneously engage with the outer lock core groove 312 of the outer lock core 31 and the side T-shaped groove 2131 of the rear inner lock core 213. At this time, the rotating key assembly 5 can drive the inner lock core assembly 2 and the outer lock core assembly 3 to rotate simultaneously and drive the output assembly 4 connected to the outer lock core assembly 3. At the same time, the output assembly 4 drives the existing cam or link mechanism connected thereto to adjust the lock tongue to the unlocking position to realize the unlocking action.

[0093] Therefore, there is a linkage relationship between the respective combined retaining ring balls that make up the first diameter-changing mechanism 230 and the second diameter-changing mechanism 250, which limits that the rotational locking state of the outer lock core 31 relative to the lock shell body 11 can only be released when all the crank balls move to the unlocking position. That is, in the illustrated embodiment, the state of the side post 214 is not only restricted by the first diameter-changing mechanism 230 linked to the first locking mechanism 220, but also restricted by another set of second diameter-changing mechanisms 250 linked to the second locking mechanism 240.

[0094] See Figure 2 and 3 , in the illustrated embodiment, the second locking mechanism 240 includes a first interlocking ball 241, a second interlocking ball 242, a third interlocking ball 243, a fourth interlocking ball 244, a fifth interlocking ball 245, a main shaft 246, a rear collar 247, a front collar 248, and an interlocking ball spring 249.

[0095] See Figure 2, 8 and 9, the interlocking balls can be combined into a tube, the outer diameter of which is slightly smaller than the inner diameter of the cavity 2127 of the second locking mechanism. At different positions on the outer side surfaces of the respective interlocking balls, there are grooves that match the combined snap ring balls, such as the first interlocking ball groove 2411. As Figure 12 shown, and there is a semi-circular groove axially provided on its outer side surface for use with the orienting teeth 2120 on the middle inner lock core 212 * to cooperate, limiting the second locking mechanism 240 to only reciprocate axially. See Figure 3 , 16 and 17, the rear collar 247 and the front collar 248 include a hole that can fit over the diameter of the main shaft 246, and the two collars are connected in series on the main shaft 246 through this hole. Each collar also includes collar teeth that can be adapted to the U-shaped track grooves formed by two vertical sides on the inner side surface of each interlocking ball and interconnected through guiding protrusions. In the locked state, see Figure 37 , 38, 39, 40, 41 and 42, each tooth of the rear collar 247 and the front collar 248 is at the central position of the guiding protrusion of each interlocking ball.

[0096] Taking the third interlocking ball 243 as an example, as Figure 15 and 40 shown, in the locked state, the interlocking ball spring 249 axially extrudes the third interlocking ball 243 to the initial point, and the outer side surface of the third interlocking ball 243 is tangent to the snap ring ball teeth 2300 on the inner side of the fifth combined snap ring ball 235 of the second variable diameter mechanism 250, causing it to be radially pushed outward into the annular groove 116 inside the tubular opening 111.

[0097] See Figure 24 and 27 , when the correct key is inserted, the third interlocking ball 243 is axially pushed by the third crank ball 223. As Figure 46 shown, the second front collar tooth 2482 on the front collar 248 that is adapted to the third track groove 2432 will be pushed by the third guiding protrusion 2433, and the front collar 248 rotates and falls into the vertical groove of the third track groove 2432. See Figure 16 and 28 , in the illustrated embodiment, the first interlocking ball 241, the third interlocking ball 243 and the fifth interlocking ball 245 form an interlocking ball unit. The correct key rotates the front collar 248, causing its second front collar tooth 2482 and third front collar tooth 2483 to move from the central position of the guiding protrusion in the locked state to as Figure 39, as shown in FIGS. 40, 45 and 46, in the correct vertical slots of the third interlocking ball 243 and the fifth interlocking ball 245. That is, the correct key rack assembly 530 is designed such that the length of the rack corresponding to the third crank ball 223 is slightly longer than the length of the rack corresponding to the fifth crank ball 225. Therefore, the third crank ball 223 is axially pushed to the unlocking position prior to the fifth crank ball 225. If an incorrect key is used such that the fifth crank ball 225 is axially pushed prior to the third crank ball 223, the third front collar tooth 2483 of the front collar 248 will be pushed by the fifth guiding projection 2453 on the fifth interlocking ball 245, which has an inclination direction opposite to that of the third guiding projection 2433, causing the front collar 248 to rotate in the opposite direction, and the second front collar tooth 2482 of the front collar 248 to fall into the incorrect vertical slot of the third track slot 2432. The length of the incorrect vertical slot is smaller than that of the correct vertical slot. Therefore, the interlocking ball 243 will not be pushed to the unlocking position. As described above, the second locking mechanism 240 cannot be radially pushed inward. Referring to the linkage relationship between the aforementioned interlocking balls and the combination snap ring, the side post 214 radially pushes the idle lock pin 32 outward, and the outer lock core 31 rotates relative to the lock housing body 11 to the locked state. The incorrect key cannot cause the inner lock core assembly 2 and the output assembly 4 to rotate simultaneously. See Figure 17 and 29 , the second interlocking ball 242 and the fourth interlocking ball 244 form an interlocking ball unit and are locked to each other by the same principle as above. Moreover, when the correct key is withdrawn from the keyhole, each interlocking ball is axially pushed outward by the interlocking ball spring to the locked state, and each slider rotates to the locked state.

[0098] See Figure 3, in the illustrated embodiments 38 and 44, the first interlocking ball 241 is a trap ball, the inclination direction of its first guiding protrusion 2413 is opposite to that of the third guiding protrusion 2433 and the same as that of the fifth guiding protrusion 2453 of the fifth track groove 2452. Therefore, if the first crank ball 221 is pushed inward before the third crank ball 223, in the same way as the fifth combined snap ring ball 235 is axially pushed before the third combined snap ring ball 233 as described above, the front collar 248 will rotate into the wrong vertical groove, and the interlocking ball group unit composed of the first interlocking ball 241, the third interlocking ball 243 and the fifth interlocking ball 245 will be locked. In this embodiment, in the locked state, the first interlocking ball groove 2411 on the outer side surface of the first interlocking ball 241 is aligned with the snap ring ball tooth 2300, so the correct key will not push the first crank ball to displace the first interlocking ball 241. Therefore, if an incorrect key or other means is used to push the first interlocking ball 241 to displace it, the first interlocking ball 241, the third interlocking ball 243 and the fifth interlocking ball 245 will be locked with each other. Such a design determines the sequence of pushing the interlocking balls by the length of the key rack and cooperates with the track groove to realize the interlocking function between the balls, effectively making up for the defect that the existing lock core is easy to be tested by being toggled one by one and thus being cracked to open the lock core, greatly increasing the key quantity and reducing the probability of mutual key opening of the existing lock core keys.

[0099] See Figure 4 , the key assembly 5 that matches the lock core of the present invention includes a key outer sleeve 51, a key inner sleeve 52, a key rack assembly 530, a key rack wheel 54, a button 55, a key inner sleeve hook 56, a key bolt 57 and a key spring 58.

[0100] See Figure 4 and 49 , the key outer sleeve 51 includes a first cavity 511 along its axial direction that is configured to receive the key inner sleeve 52 and the key rack wheel 54. A bolt hole 514 for receiving the key bolt 57 is provided at the bottom of the groove, and a receiving tooth 512 for connecting the key inner sleeve 52 is provided at the edge of the groove. A button groove 513 for receiving the button 55 is provided on the side surface of the key outer sleeve 51.

[0101] See Figure 4 , 50 and 51, the key rack wheel 54 includes a second hole 541 and a third spring hole 542 along its axial direction that are configured to receive the key rack assembly 530 and the key bolt 57. As Figure 50 and 51 shown, the key bolt 57 can keep the key outer sleeve 51 and the key rack wheel 54 in the assembled state, and the length of the key bolt 57 is slightly shorter than that of the third spring hole 542. Therefore, in the assembled state, as Figure 6, as shown in FIGS. 8, 20 and 21, the other end of the third spring hole 542 of the receiving key bolt 57 can receive the key spring 58. A hook groove 543 for receiving the key inner sleeve hook 56 is provided on the side surface of the key rack wheel 54. The key rack assembly 530 is configured in a T shape so as to be fixed in the second hole 541 of the key rack wheel 54. The cross-sectional diameter of the section that needs to extend into the front opening 2113 of the crank pin is slightly smaller than the key hole. The lengths of the respective racks are matched with the distances that the respective pins of the first locking mechanism 220 need to be pushed in the unlocked state.

[0102] See Figure 8 , FIGS. 9, 21 and 22, one end of the key inner sleeve 52 is provided with a second cavity 525 for receiving the key rack wheel 54. The bottom of the cavity is provided with a third hole 522 through which the key rack assembly 530 can pass and a spring groove 526 for receiving the key inner sleeve spring 58. A circumferential groove 524 for receiving the receiving teeth 512 and an axial groove 523 are provided on the outer side of the key inner sleeve 52. As Figure 4 shown, on the other end of the key inner sleeve 52, there are provided a pair of key inner sleeve grooves 521, and the pair of key inner sleeve grooves 521 can be used to observe the alignment of the outer mark 110 and the inner mark 2111 on the surface of the lock case body 11 and the front inner lock core 211. See Figure 49 , on the inner side surface of the key inner sleeve 52, there is provided a limiting groove 527 for receiving the positioning protrusion 561 of the key inner sleeve hook 56.

[0103] See Figure 49 , FIGS. 50, in the assembled state, the receiving teeth 512 of the key outer sleeve 51 first engage with the circumferential groove 524 along the key inner sleeve 52, and then the key inner sleeve 52 is rotated until the receiving teeth 512 engage with the axial groove 523 along the key inner sleeve 52. At this time, the key outer sleeve 51 and the key inner sleeve 52 are in a capsule shape and wrap the various components inside. See Figure 21 , FIGS. 22, when using the key assembly 5 to unlock, the key inner sleeve 52 is pushed into the key outer sleeve 51. The positioning protrusion 561 of the key inner sleeve hook 56 engages with the spring groove 526, and the key rack assembly 530 protrudes from the third hole 522 and can push the first locking mechanism 220.

[0104] See Figure 51, 52 and 53. After the key assembly 5 is used, the button 55 can be pressed to disengage the positioning protrusion 561 of the key inner sleeve hook 56 from the spring groove 526. Under the action of the key spring 58, the key inner sleeve 52 is pushed back to the initial position, covering the pin key rack assembly 530. Such a design effectively makes up for the defect that the tooth pattern of the existing key is exposed outside, and it is easy to leak the tooth pattern of the key through other means such as taking pictures, and then the key is copied. Moreover, the key assembly 5 of the present invention is small in size, and the key outer sleeve 51 can be designed into various beautiful styles for carrying close to the body, which also makes up for the inconveniences of the existing key such as large volume, not easy to carry close to the body, and not beautiful, etc., and can greatly reduce the many troubles caused by forgetting the key.

Claims

1. An interlocking ball idling lock body, comprising a lock shell assembly, one end of the lock shell assembly is provided with a keyhole, the other end of the lock shell assembly is connected with an output assembly, and the output assembly is connected with a lock tongue through a connecting rod mechanism, and is characterized in that: The interior of the lock housing assembly has a cavity, and an inner lock core assembly and an outer lock core assembly are successively arranged in the cavity. The rear end of the outer lock core assembly is connected to the output assembly; The inner lock core assembly is successively provided with a front inner lock core, a middle inner lock core, and a rear inner lock core. The front inner lock core is provided with a plurality of through holes, and a first locking mechanism composed of a plurality of pins is arranged in the through holes. The first locking mechanism is arranged in the keyhole on the lock housing assembly; the front inner lock core is connected to the middle inner lock core through the pins on the first locking mechanism, and the middle inner lock core and the rear inner lock core are connected through the pins on the second diameter-changing mechanism; The outer lock core assembly is an annular structure with an opening and is sleeved on the rear inner lock core; There are a number of through holes on the front inner lock core of the inner lock core assembly that can receive the first locking mechanism. A front cavity is provided in the front inner lock core, and the first locking mechanism is placed between the cavity of the first locking mechanism and the front cavity; a side post groove is provided on the outer side wall of the middle inner lock core, and a T-shaped groove is provided on the outer side wall of the rear inner lock core. One end of the side post is arranged in the side post groove, and the other end of the side post is placed in the T-shaped groove; a second locking mechanism cavity is provided at the rear side of the middle inner lock core, and a rear cavity is provided at the front side of the rear inner lock core, and the second locking mechanism is placed between the second locking mechanism cavity and the rear cavity; A first diameter-changing mechanism is provided on the outer side wall of the middle inner lock core, and a combined snap ring pin group spring is provided on both sides of the first diameter-changing mechanism. The first diameter-changing mechanism cooperates with the combined snap ring pin group spring; There are 5 pins on the first locking mechanism, and the pins on the corresponding second locking mechanism, first diameter-changing mechanism, and second diameter-changing mechanism are all 5; The pins on the first locking mechanism are of a crank structure. A crank pin spring is provided on one side of the bent part of the crank. The crank pin spring is installed in the crank pin spring groove on the middle inner lock core. One end of each crank pin is provided with a crank pin groove with different positions; A main shaft is provided at the center of the second locking mechanism. Five spring installation depressions are provided along the circumference of the main shaft, and five interlocking pin springs are provided in the spring installation depressions; a rear collar and a front collar are successively sleeved at the bottom of the main shaft. The rear collar and the front collar are provided with collar teeth. A total of 5 interlocking pins are provided on the outer circumference of the rear collar and the front collar. Trajectory grooves are provided on each of the interlocking pins, and the trajectory grooves correspond to the collar teeth one by one; The outer lock core assembly includes an outer lock core with an annular structure with an opening and an idle lock pin. The idle lock pin is T-shaped and is fixed on the outside of the side post.

2. The interlocking ball idle-turn lock body according to claim 1, wherein: The first diameter-changing mechanism and the second diameter-changing mechanism have the same structure. The first diameter-changing mechanism is composed of 5 combined snap ring pins to form an annular structure. The 5 combined snap ring pins are combined with each other on the curved surface. Wedge-shaped pins are provided on both sides of each combined snap ring pin, and snap ring pin teeth are provided on the inner diameter of each combined snap ring pin; Combined snap ring pin group springs are provided on both axial sides of the first diameter-changing mechanism and the second diameter-changing mechanism. The wedge-shaped pins of each combined snap ring pin are pushed inward. Side post grooves are provided on the outside of the first diameter-changing mechanism and the second diameter-changing mechanism, and the side post is arranged in the side post groove.

3. The interlocking ball idle rotating lock body according to claim 1, characterized in that: Two spring holes are provided on the outer side wall of the lock housing main body. Springs are provided in the spring holes. A top bead is provided at the bottom of the spring. One top bead presses on the side post, and the other top bead presses on the idle lock pin.

4. A key for the interlocking ball idling lock body according to claim 1, characterized in that: The key is provided with a key rack gear, and a number of key rack components are arranged inside the key rack gear. The key rack components correspond one by one to through holes on the front inner lock core of the interlocking pin idle running lock body.

5. The key of the interlocking ball idling lock body according to claim 4, characterized in that: The key includes a key outer sleeve. A key inner sleeve is arranged inside the key outer sleeve. A key rack gear is arranged inside the key inner sleeve. A key spring is arranged between the key inner sleeve and the key rack gear. The key inner sleeve is coaxially fixed with the key rack gear and the key outer sleeve.

6. The key of the interlocking ball idling lock body according to claim 4, characterized in that: A button is arranged on the key outer sleeve. A hook groove is arranged on the key inner sleeve. A key inner sleeve hook is arranged on the key rack gear. A positioning protrusion is arranged on the key inner sleeve hook. The button presses on the inner sleeve hook.

7. The key of the interlocking ball idle-turn lock body according to claim 5, characterized in that: A key inner sleeve groove is arranged on the key inner sleeve. An outer mark is arranged on the front surface of the lock shell body. The key inner sleeve groove corresponds to the outer mark.

Images