Novel telescopic spring bolt end face pin tumbler lock
By introducing structures such as rotating connecting seats, pin slots, projecting pin blocks and large springs into the lock core assembly, a new telescopic lock tongue end face bulge lock lock is designed, which solves the problem that traditional locks are difficult to resist advanced lock picking tools, and achieves higher safety and simpler production processes.
Patent Information
- Application Number
- CN202421923092.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-09
AI Technical Summary
Traditional end-faced marble locks are difficult to achieve the purpose of safety protection when facing advanced lock picking tools, and are insufficient in safety.
A new telescopic lock end face bulge lock is designed. By introducing structures such as rotating connecting seats, pin slots, protruding pin blocks and large springs into the lock core assembly, it increases the difficulty of picking the lock, and the cooperation between the gears and the lock tongue is driven through key operation to achieve an effective switch of the lock.
The difficulty of picking the lock is increased, and the lock picker needs to spend more time identifying the correct contact points of the pellets. At the same time, the structure is simple and will not increase the difficulty of producing the lock.
Smart Images
Figure CN222909692U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to locks, in particular to a new type of retractable lock tongue end face pin tumbler lock. Background Art
[0002] The retractable lock tongue end face pin tumbler lock is a new type of door lock design, whose background mainly stems from the improvement and innovation of traditional door locks. The contact between each outer pin and inner pin is aligned with the contact between the rotating lock core and the fixed lock core, and then the rotating lock core is released and can rotate.
[0003] Although the current end face pin tumbler lock has improved security compared with the previous ordinary pin tumbler lock, correspondingly, with the development of technology and the progress of manufacturing processes, the production and design of lock picking tools have become more and more advanced and professional, making some lock picking tools more powerful and efficient, and it has become increasingly difficult for traditional end face pin tumbler locks to achieve the purpose of security protection.
[0004] Therefore, it is necessary to design a new type of anti-theft retractable lock tongue end face pin tumbler lock. Summary of the Utility Model
[0005] In order to overcome the drawback that it has become increasingly difficult for traditional end face pin tumbler locks to achieve security protection, the technical problem to be solved is: to provide a new type of retractable lock tongue end face pin tumbler lock.
[0006] The technical solution of the utility model is: a new type of retractable lock tongue end face pin tumbler lock, comprising: a housing rear cover and a housing front cover, with the housing front cover provided at the front end of the housing rear cover; a lock core front cover, fixedly provided through the middle of the front of the housing front cover; and a lock core assembly for anti-theft provided inside the lock core front cover.
[0007] As a preferred technical solution of the present utility model, the lock core assembly includes: a rotating lock core, which is rotatably provided on the front inner side of the lock core front cover; a fixed lock core, which is fixedly provided on the rear side of the rotating lock core on the inner side of the lock core front cover; an outer ball, which is slidably provided in a through hole opened in the rotating lock core; an inner ball, which is slidably provided in an unthrough hole opened in the fixed lock core with the same size as the through hole opened in the rotating lock core and with an opening on one side of the rotating lock core; a small spring, which is provided at the innermost side of the fixed lock core hole; a first ball, which is slidably provided in a through hole in the rotating lock core; a second ball, which is slidably provided behind the first ball in the rotating lock core; a third ball and a convex through hole, the convex through hole is opened in the fixed lock core, and a T-shaped third ball is slidably provided in the convex through hole; a rotating connection seat, which is slidably provided on the rear side of the fixed lock core on the inner side of the lock core front cover; a pin slot, which is opened on the front surface of the rotating connection seat; a protruding pin block, which is opened on the rear surface of the rotating lock core and is in pin fit with the pin slot; a large spring, which is connected to the rear surface of the rotating connection seat; a lock core rear cover, which is fixedly provided on the rear surface of the lock core front cover, and the lock core rear cover is provided with a through hole only for the rotating connection seat to pass through; a screw, which is connected between the lock core rear cover and the lock core front cover; a pin, which is connected between the lock core front cover and the fixed lock core; a key, which is provided with a certain number and depth of grooves on the lower surface and can be inserted into the lock core front cover and is in insertion fit with the balls.
[0008] As a preferred technical solution of the present utility model, it further includes: a gear, which is fixedly provided on the rear surface of the rotating connection seat; a lock tongue, which is slidably provided through the side wall of the rear cover of the housing on the lower inner side of the rear cover of the housing, and the lock tongue is in tooth fit with the gear.
[0009] As a preferred technical solution of the present utility model, it further includes: a limit block, which is fixedly provided on the side surface of the key; a limit groove, which is opened on the inner side surface of the front end of the lock core front cover in a semi-circular arc shape, and two limit block inlets are opened above and below the limit groove.
[0010] As a preferred technical solution of the present utility model, chamfered edges are respectively opened on the contact surfaces of the second ball and the third ball.
[0011] As a preferred technical solution of the present utility model, a soft pad is fixedly provided on the front surface of the rotating lock core.
[0012] The utility model has the following advantages: 1. In the utility model, the position of the No. 2 pin is random, and the correct contact point between the No. 3 pin is originally set between the fixed lock core and the rotating lock core. When the lock picker tries to explore, he squeezes the pins, which will cause the contact point between the No. 2 pin and the No. 3 pin to miss the position between the fixed lock core and the rotating lock core, and the contact point between the No. 1 pin and the No. 2 pin will be between the fixed lock core and the rotating lock core. When this happens, the No. 3 pin passes through the fixed lock core through the convex through hole to support the rotating connecting seat, and the rotating connecting seat that originally cooperates with the rotating lock core through the pin groove and the protruding pin block pin is pushed open, and the large spring contracts, so that only the rotating connecting seat and the rotating lock core are left with the rotating cooperation. In this way, when the lock picker twists the rotating lock core, the rotating connecting seat will not rotate either, which increases the difficulty of being picked, and the structure is simple, and the difficulty of producing the lock will not be increased.
[0013] 2. The key squeezes the outer pin and the inner pin so that they are in contact between the fixed lock cylinder and the rotating lock cylinder. In this way, the rotating lock cylinder can rotate forward. The rotating lock cylinder rotates forward and drives the rotating connecting seat that cooperates with the latch to rotate forward. The gear fixed at the rear end of the rotating connecting seat rotates forward, and the gear drives the lock tongue that cooperates with its teeth to slide outward. The same applies when the key is used to lock the lock. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0015] Figure 2 This is a schematic diagram of a first partial three-dimensional structure of the utility model.
[0016] Figure 3 It is an exploded view of the utility model.
[0017] Figure 4 It is an enlarged view of point A of the present utility model.
[0018] Figure 5 This is a schematic diagram of a second partial three-dimensional structure of the utility model.
[0019] Wherein: 1-shell back cover, 2-shell front cover, 201-lock core assembly, 3-lock core front cover, 4-rotating lock core, 5-fixed lock core, 6-outer pin, 7-inner pin, 8-small spring, 9-No. 1 pin, 10-No. 2 pin, 11-No. 3 pin, 12-convex through hole, 13-rotating connecting seat, 14-pin slot, 15-protruding pin block, 16-large spring, 17-lock core back cover, 18-screw, 19-pin, 20-key, 21-gear, 22-lock tongue, 23-limit block, 24-limit slot, 26-cushion. DETAILED DESCRIPTION
[0020] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present utility model. Embodiment
[0021] As Figures 1 to 5 shown, the present utility model provides a new type of telescopic lock tongue end face pin tumbler lock, which specifically includes a housing rear cover 1, a housing front cover 2 and a lock core assembly 201;
[0022] Among them, a housing front cover 2 is provided at the front end of the housing rear cover 1, and a lock core front cover 3 is fixedly arranged through the middle of the front surface of the housing front cover 2 for stably installing various lock core parts;
[0023] Among them, the lock core assembly 201 is arranged inside the lock core front cover 3 for achieving the purpose of anti-prying the lock with a simple structure.
[0024] The lock core assembly includes a rotating lock core 4, a fixed lock core 5, an outer tumbler 6, an inner tumbler 7, a small spring 8, a first tumbler 9, a second tumbler 10, a third tumbler 11, a rotating connection seat 13, a protruding pin block 15, a large spring 16, a lock core rear cover 17, a screw 18, a plug pin 19 and a key 20. The rotating lock core 4 is rotatably arranged on the front inner side of the lock core front cover 3, and the fixed lock core 5 is fixedly arranged behind the rotating lock core 4 on the inner side of the lock core front cover 3. The rotating lock core 4 is provided with a through hole in which the outer tumbler 6 slides. The fixed lock core 5 is provided with an unthrough hole with the same size as the through hole opened in the rotating lock core 4 and with an opening on one side of the rotating lock core 4, and the inner tumbler 7 slides in the unthrough hole. A small spring 8 is arranged at the innermost part of the hole of the fixed lock core 5. A first tumbler 9 slides in a through hole in the rotating lock core 4, and a second tumbler 10 slides behind the first tumbler 9 in the rotating lock core 4. A convex through hole 12 is opened in the fixed lock core 5, and a T-shaped third tumbler 11 slides in the convex through hole 12. A rotating connection seat 13 is slidably arranged behind the fixed lock core 5 on the inner side of the lock core front cover 3. A plug slot 14 is opened on the front surface of the rotating connection seat 13, and a protruding pin block 15 that is inserted and matched with the plug slot 14 is opened behind the rotating lock core 4. A large spring 16 is connected behind the rotating connection seat 13. A lock core rear cover 17 is fixedly arranged behind the lock core front cover 3. The lock core rear cover 17 is provided with a through hole only for the rotating connection seat 13 to pass through. A screw 18 is connected between the lock core rear cover 17 and the lock core front cover 3. A fixed lock core 5 is connected between the lock core front cover 3 and the fixed lock core 5. The key 20 is provided with a certain number and depth of slots at the bottom, which can be inserted into the lock core front cover 3 and inserted and matched with the tumblers.
[0025] In the present invention, based on the principle of picking the lock, generally speaking, picking the lock requires squeezing each pin to make the connection between every two pins to the correct position. Based on this principle, the picker will place the pin connection between the fixed lock cylinder 5 and the rotating lock cylinder 4 so that the rotating lock cylinder 4 can rotate. In order to keep this principle unchanged and make the structure confusing to the picker, one group of pin springs, namely pin No. 1 9, pin No. 2 10, pin No. 3 11, and a small spring 8 connected between the pin No. 3 11 and the fixed lock cylinder 5, has two connection points between the three pins, wherein the pin No. 2 10 and the pin No. 3 11 are the correct contact points and are located between the fixed lock cylinder 5 and the rotating lock cylinder 4. When the key 20 is used to unlock the lock, there will be no operation on this group of pins. When the picker tries to explore, the pin No. 2 will be squeezed and the pin No. 3 will be moved. The contact point between the pin 10 and the third pin 11 misses the fixed lock cylinder 5 and the rotating lock cylinder 4, and the contact point between the first pin 9 and the second pin 10 is placed between the fixed lock cylinder 5 and the rotating lock cylinder 4. When this happens, the third pin 11 passes through the fixed lock cylinder 5 through the convex through hole 12 to support the rotating connecting seat 13, and the rotating connecting seat 13 that was originally engaged with the rotating lock cylinder 4 through the latch groove 14 and the protruding pin block 15 is pushed open, and the large spring 16 contracts, so that only the rotating connecting seat 13 and the rotating lock cylinder 4 are left with rotation. In this way, when the lock picker controls the rotating lock cylinder 4 to rotate, the rotating connecting seat 13 will not rotate either, which increases the difficulty of picking the lock, and the lock picker needs to spend more time to distinguish which is a useful pin and which is a deceptive pin. In addition, the structure is simple and will not increase the difficulty of producing the lock. Example
[0026] like Figure 1 and Figure 2 As shown, based on Example 1, it specifically includes a gear 21 and a lock tongue 22. The gear 21 is fixedly provided behind the rotating connecting seat 13, and a lock tongue 22 is slidably provided on the lower inner side of the shell rear cover 1 and penetrates the side wall of the shell rear cover 1. The lock tongue 22 cooperates with the teeth of the gear 21.
[0027] Gear 21. When unlocking with key 20, key 20 will not operate on the first ball 9, the second ball 10, and the third ball 11 because the contact between the second ball 10 and the third ball 11 is between the fixed lock core 5 and the rotating lock core 4, and the third ball 11 will not penetrate the fixed lock core 5. In this way, key 20 squeezes the positions of the outer ball 6 and the inner ball 7 so that their contact position is between the fixed lock core 5 and the rotating lock core 4. Then the rotating lock core 4 can rotate forward. When the rotating lock core 4 rotates forward, it drives the rotating connection seat 13 that is inserted and matched with it to rotate forward. When the rotating connection seat 13 rotates forward, the gear 21 fixed to the rear end of the rotating connection seat 13 rotates forward. Then the gear 21 drives the lock tongue 22 that is engaged with it to slide outwards. When locking with key 20, it is the same principle. Key 20 squeezes the positions of the outer ball 6 and the inner ball 7 so that their contact position is between the fixed lock core 5 and the rotating lock core 4. Then the rotating lock core 4 can rotate backward. When the rotating lock core 4 rotates backward, it drives the rotating connection seat 13 that is inserted and matched with it. When the rotating connection seat 13 rotates backward, the gear 21 fixed to the rear end of the rotating connection seat 13 rotates backward. Then the gear 21 drives the lock tongue 22 that is engaged with it to slide inwards. In addition, since the lock tongue 22 has a certain thickness, when the gear 21 undergoes longitudinal displacement as the rotating connection seat 13 slides, it will not deviate from the tooth engagement between the gear 21 and the lock tongue 22.
[0028] As Figure 1 and Figure 2 shown, on the basis of Embodiment 1, it specifically further includes a limit block 23, and a limit block 23 is fixedly arranged on the side of key 20; a limit groove 24, a semi-circular arc-shaped limit groove 24 is opened on the inner side of the front end of the lock core front cover 3, and two limit block 23 entrances are opened up and down in the limit groove 24.
[0029] The cooperation between the limit block 23 and the limit groove 24 enables key 20 to only rotate half a turn each time, and there are two entrances in the limit groove 24, the entrance at the locking position is above, and the entrance at the unlocking position is below.
[0030] As Figure 4 shown, on the basis of Embodiment 1, it specifically further includes that chamfered edges are opened on the contact surfaces of the second ball 10 and the third ball 11.
[0031] The chamfered edges make the process of the second ball 10 and the third ball 11 moving with the rotation of the rotating lock core 4 smoother.
[0032] As Figure 1 、 Figure 2 and Figure 5 shown, on the basis of Embodiment 1, it specifically further includes that a soft pad 26 is fixedly arranged in front of the rotating lock core 4.
[0033] When unlocking with the key 20, the soft pad 26 can enhance the feel during unlocking and avoid the problem of difficult unlocking often caused by excessive force in the case of a broken-end face lock.
[0034] Those skilled in the art should understand that the above embodiments do not limit the present utility model in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present utility model.
Claims
1. A new type of telescopic bolt end pin lock, characterized in that: include: A housing rear cover (1) and a housing front cover (2), wherein the housing front cover (2) is disposed at the front end of the housing rear cover (1); A lock core front cover (3) is fixedly provided through the middle of the front of the housing front cover (2); A lock core assembly (201) is provided on the inner side of the lock core front cover (3) for preventing theft.
2. A novel telescopic bolt end pin lock as claimed in claim 1, characterized in that: The lock core assembly (201) comprises: A rotary lock core (4) is rotatably provided on the front inner side of the lock core front cover (3); A fixed lock core (5) is provided on the inner side of the lock core front cover (3) and the rear side of the rotating lock core (4) is fixedly provided with a fixed lock core (5); An outer pin (6) is provided in a through hole in the rotating lock core (4) and the outer pin (6) is slidably arranged therein; An inner pin (7) is slidably arranged in a blind hole of the fixed lock core (5) which has a through hole of the same size as that of the rotating lock core (4) and has an opening on one side of the rotating lock core (4); A small spring (8), wherein a small spring (8) is provided at the innermost side of the hole of the fixed lock core (5); A first pin (9) is slidably disposed in a through hole in the rotating lock core (4); A second pin (10) is provided in a sliding manner behind the first pin (9) in the rotating lock cylinder (4); A No. 3 pin (11) and a convex through hole (12), wherein the fixed lock core (5) is provided with a convex through hole (12), and a T-shaped No. 3 pin (11) is slidably arranged in the convex through hole (12); A rotating connecting seat (13) is provided on the inner side of the lock core front cover (3) and the rear side of the fixed lock core (5) is slidably provided with a rotating connecting seat (13); A latch groove (14), wherein the front of the rotating connecting seat (13) is provided with a latch groove (14); A protruding pin block (15) is provided at the rear of the rotating lock cylinder (4) to engage with the pin of the pin slot (14); A large spring (16), the rear of the rotating connecting seat (13) is connected with a large spring (16); A lock core rear cover (17), the lock core rear cover (17) is fixedly provided behind the lock core front cover (3), and the lock core rear cover (17) is provided with a through hole only for the rotation connection seat (13) to pass through; Screws (18), the lock core rear cover (17) and the lock core front cover (3) are connected with screws (18); A latch pin (19), a fixed lock core (5) is connected between the lock core front cover (3) and the fixed lock core (5); The key (20) has a certain number of grooves with a certain depth on the bottom, which can be inserted into the lock cylinder front cover (3) and cooperate with the pin to be inserted.
3. A novel telescopic bolt end pin lock as claimed in claim 2, characterized in that: Also includes: A gear (21) is fixedly provided behind the rotating connecting seat (13); A lock tongue (22) is provided on the lower inner side of the housing rear cover (1) and penetrates through the side wall of the housing rear cover (1) in a sliding manner. The lock tongue (22) is engaged with the teeth of the gear (21).
4. A novel telescopic bolt end pin lock as claimed in claim 3, characterized in that: Also includes: A limit block (23), a limit block (23) is fixedly provided on the side of the key (20); A limiting groove (24) is provided on the inner side surface of the front end of the lock core front cover (3) and a semicircular arc-shaped limiting groove (24) is provided. The limiting groove (24) has two limiting block (23) entrances at the upper and lower ends.
5. A novel telescopic bolt end pin lock as claimed in claim 4, characterized in that: The contact surfaces of the No. 2 pin (10) and the No. 3 pin (11) are each provided with an edge chamfer.
6. A novel telescopic bolt end pin lock as claimed in claim 5, characterized in that: A soft cushion (26) is fixedly provided on the front of the rotary lock core (4).