Pin tumbler lock capable of preventing pin tumblers from being exposed

Abstract

The utility model discloses a marble lock with no marble leakage, which comprises a fixed column, a key hole is arranged in the fixed column, two elongated slots are arranged in the key hole, a through hole is arranged in one elongated slot, a first sleeve is movably sleeved on the outer side of the fixed column, a second sleeve is movably sleeved on the outer side of the first sleeve, and the second sleeve is sleeved on the outer side of the second sleeve. A plurality of guide grooves are formed in the first sleeve, first marbles are movably connected into the guide grooves, tension springs are movably connected to the outer sides of the first marbles in a sleeving mode, a plurality of grooves are formed in the inner side of the second sleeve, second marbles are arranged in the grooves, and a locking assembly is arranged at the rear end of the first sleeve. According to the anti-theft lock, the pins can be prevented from being exposed in the key hole through the fixing column and the locking assembly, unlocking secrets are prevented from being leaked, the lock is safer and more reliable to use, due to the fact that the teeth are arranged on the key, the first pins move by different distances in the guide groove, and the anti-theft lock is more convenient to use. And the second pin tumbler is reset under the action of the force of the first telescopic spring, one end of the second pin tumbler moves to a port of the groove, and unlocking of the lock can be completed through the key.

Description

Technical Field

[0001] The utility model relates to the technical field of pin locks, in particular to a pin lock with no leakage of pins. Background Art

[0002] Among all the locks in the world, the pin lock with cylindrical pins, which was invented by American Yale Linus in 1848, is widely used. Modern pin locks have developed two-way, three-way, four-way pins, mother pins, and flat, double-sided, multi-sided, double-row double-sided, multi-row multi-sided pin structures and combined pin structures. Regardless of the structure of the pin lock, the unlocking principle is that the key teeth push the pins in the lock core to move and open the lock. In existing pin locks, since the key teeth are fixed, the pins in the lock core must be designed so that the ends protrude from the key slots. Only in this way can the key teeth contact and push the pins.

[0003] Traditional locks all have a common feature, that is, the pin end is exposed. The exposed pin end can be directly touched by foreign objects, wire hooks, etc., and can be opened by technology, which causes the exposed pin to leak the secret of unlocking, making technical unlocking possible. Therefore, a pin lock with no pin leakage is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a pin lock with no pin leakage, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pin lock with no pin leakage, comprising a fixed column, a keyhole being arranged inside the fixed column, two long slots being opened inside the keyhole, a through hole being opened inside one of the long slots, a first sleeve being movably sleeved on the outer side of the fixed column, a second sleeve being movably sleeved on the outer side of the first sleeve, a plurality of guide slots being opened inside the first sleeve, a first pin being movably connected inside a plurality of the guide slots, a tension spring being movably sleeved on the outer side of the first pin, a plurality of grooves being opened inside the inner side of the second sleeve, a second pin being arranged inside the groove, and a locking assembly being arranged at the rear end of the first sleeve.

[0007] Preferably, the locking assembly comprises two sliding columns, a connecting column and a fixed block, the inner rear end of the keyhole is provided with two sliding grooves, the two sliding columns are respectively slidably connected to the inside of the two sliding grooves, the connecting column is fixedly connected between the two sliding columns, the fixed block is fixedly connected to the rear end of the first sleeve, a fixing groove is provided on the front side of the fixing block, one end of the connecting column is slidably connected to the inside of the fixing groove, and a second telescopic spring is fixedly connected between the connecting column and the fixing groove.

[0008] Preferably, one end of the tension spring is fixedly connected to the inside of the guide groove, and the other end of the tension spring is fixedly connected to the outside of the first pin.

[0009] Preferably, a first telescopic spring is fixedly connected between the groove and the second pin.

[0010] Preferably, a fixing frame is fixedly connected to the outer side of the second sleeve, a connecting shaft is provided between one side of the fixing frame and the fixing block, and a shift plate is fixedly sleeved on the outer side of the connecting shaft.

[0011] Preferably, one end of the connecting shaft is rotatably connected to one side of the fixing frame, and the other end of the connecting shaft is fixedly connected to one side of the fixing block.

[0012] Preferably, the groove is communicated with the guide groove, and one end of the first pin matches with the through hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can prevent the pin from being exposed to the inside of the keyhole through the fixed column and the locking assembly, avoid leaking the secret of unlocking, and make the lock safer and more reliable to use; the through hole moves to one end of the first pin, and the first pin will be reset under the action of the tension spring force, so that one end of the first pin moves to the inside of the through hole, and due to the arrangement of the teeth on the key, multiple first pins move different distances inside the guide groove, so that the second pin is reset under the action of the first telescopic spring force, and one end of the second pin moves to the end of the groove, and the first sleeve can be driven to rotate by the key, and the first sleeve can then drive the connecting shaft to rotate through the fixed block, which can drive the dial plate to rotate, and complete the unlocking of the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the top cross-sectional structure of the utility model;

[0016] Figure 3 For the utility model Figure 2Schematic diagram of the enlarged structure of the middle A area;

[0017] Figure 4 This is a schematic diagram of the fixed column structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the slide structure of the utility model.

[0019] Explanation of the reference numerals in the accompanying drawings: 1. fixing column; 2. keyhole; 3. long groove; 4. through hole; 5. first sleeve; 6. second sleeve; 7. guide groove; 8. first pin; 9. tension spring; 10. groove; 11. second pin; 12. first telescopic spring; 13. fixing frame; 14. slide groove; 15. slide column; 16. connecting column; 17. fixing block; 18. fixing groove; 19. second telescopic spring; 20. connecting shaft; 21. dial plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0022] Example

[0023] See also Figure 1-5The utility model provides a technical solution: a pin lock without leakage of pins, comprising a fixed column 1, a keyhole 2 is arranged inside the fixed column 1, two long slots 3 are opened inside the keyhole 2, a through hole 4 is opened inside one of the long slots 3, a first sleeve 5 is movably sleeved on the outer side of the fixed column 1, a second sleeve 6 is movably sleeved on the outer side of the first sleeve 5, a plurality of guide grooves 7 are opened inside the first sleeve 5, a first pin 8 is movably connected inside the plurality of guide grooves 7, a tension spring 9 is movably sleeved on the outer side of the first pin 8, one end of the tension spring 9 is fixedly connected to the inner side of the guide groove 7, the other end of the tension spring 9 is fixedly connected to the outer side of the first pin 8, a plurality of grooves 10 are opened on the inner side of the second sleeve 6, the groove 1 0 is provided with a second pin 11 inside, a locking assembly is provided at the rear end of the first sleeve 5, the groove 10 is connected with the guide groove 7, one end of the first pin 8 matches with the through hole 4, and a first telescopic spring 12 is fixedly connected between the groove 10 and the second pin 11; the through hole 4 moves to one end of the first pin 8, at which time the first pin 8 is reset under the action of the tension spring 9, so that one end of the first pin 8 moves to the inside of the through hole 4, due to the arrangement of the teeth on the key, multiple first pins 8 move different distances inside the guide groove 7, so that the second pin 11 is reset under the action of the first telescopic spring 12, and one end of the second pin 11 moves to the end of the groove 10, so that the first sleeve 5 can be driven to rotate by the key;

[0024] When the teeth on the key do not match, one end of the second pin 11 will move to the inside of the guide groove 7 under the action of the first telescopic spring 12, and the key cannot drive the first sleeve 5 to rotate.

[0025] By setting the locking assembly and the fixing column 1, it is possible to prevent the pin from being exposed inside the keyhole 2, avoid leaking the secret of unlocking, and make the lock safer and more reliable to use; the locking assembly includes two sliding columns 15, a connecting column 16 and a fixing block 17, the rear end of the keyhole 2 is provided with two sliding grooves 14, the two sliding columns 15 are respectively slidably connected to the inside of the two sliding grooves 14, the connecting column 16 is fixedly connected between the two sliding columns 15, the fixing block 17 is fixedly connected to the rear end of the first sleeve 5, and the front side of the fixing block 17 is provided with a fixing groove 18 One end of the connecting column 16 is slidably connected to the inside of the fixed groove 18, and a second telescopic spring 19 is fixedly connected between the connecting column 16 and the fixed groove 18; before unlocking, the key is inserted into the keyhole 2 so that the key moves inside the long groove 3, and one end of the key abuts against one side of the connecting column 16 to push the connecting column 16 to move inside the fixed groove 18. At this time, the connecting column 16 drives the sliding column 15 to move inside the sliding groove 14, and the sliding column 15 moves out of the sliding groove 14. At this time, the key can be rotated to drive the fixed column 1 to rotate and the lock is opened.

[0026] The outer side of the second sleeve 6 is fixedly connected to the fixing frame 13, and a connecting shaft 20 is arranged between one side of the fixing frame 13 and the fixing block 17. The outer side of the connecting shaft 20 is fixedly sleeved with a shift plate 21. One end of the connecting shaft 20 is rotatably connected to one side of the fixing frame 13, and the other end of the connecting shaft 20 is fixedly connected to one side of the fixing block 17. The first sleeve 5 can drive the connecting shaft 20 to rotate through the fixing block 17, which can drive the shift plate 21 to rotate, thereby completing the unlocking of the lock.

[0027] Working principle or structural principle, when the pin lock core needs to be opened, the key is inserted into the keyhole 2 so that the key moves inside the long slot 3, and one end of the key abuts against one side of the connecting column 16 to push the connecting column 16 to move inside the fixed slot 18, at which time the connecting column 16 drives the sliding column 15 to move inside the sliding slot 14, and the sliding column 15 moves out of the sliding slot 14, at which time the key can be rotated to drive the fixed column 1 to rotate and open the lock, and the fixed column 1 and the locking assembly can prevent the pin from being exposed inside the keyhole 2, avoiding leakage of the secret of unlocking, making the lock safer and more reliable to use;

[0028] During the rotation of the key, the through hole 4 moves to one end of the first pin 8. At this time, the first pin 8 will be reset under the action of the tension spring 9, so that one end of the first pin 8 moves to the inside of the through hole 4. Due to the setting of the teeth on the key, multiple first pins 8 move different distances inside the guide groove 7, so that the second pin 11 is reset under the action of the first telescopic spring 12, and one end of the second pin 11 moves to the end of the groove 10, and one end of the second pin 11 is set as an arc. At this time, the key is turned again, and the first sleeve 5 can be driven to rotate by the key. The first sleeve 5 then drives the connecting shaft 20 to rotate through the fixing block 17, which can drive the dial plate 21 to rotate; when the teeth on the key do not match, one end of the second pin 11 will move to the inside of the guide groove 7 under the action of the first telescopic spring 12, and the key cannot drive the first sleeve 5 to rotate.

[0029] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pin lock without leakage of pins, comprising a fixing column, characterized in that: A keyhole is provided inside the fixed column, and two long grooves are opened inside the keyhole, and a through hole is opened inside one of the long grooves, a first sleeve is movably sleeved on the outer side of the fixed column, and a second sleeve is movably sleeved on the outer side of the first sleeve, a plurality of guide grooves are provided inside the first sleeve, and a first pin is movably connected inside a plurality of the guide grooves, and a tension spring is movably sleeved on the outer side of the first pin, a plurality of grooves are provided on the inner side of the second sleeve, and a second pin is arranged inside the groove, and a locking assembly is provided at the rear end of the first sleeve.

2. A pin lock without leakage of pins according to claim 1, characterized in that: The locking assembly includes two sliding posts, a connecting post and a fixed block. Two sliding grooves are provided at the inner rear end of the keyhole. The two sliding posts are slidably connected to the inside of the two sliding grooves respectively. The connecting post is fixedly connected between the two sliding posts. The fixed block is fixedly connected to the rear end of the first sleeve. A fixing groove is provided on the front side of the fixing block. One end of the connecting post is slidably connected to the inside of the fixing groove. A second telescopic spring is fixedly connected between the connecting post and the fixing groove.

3. A pin lock without leakage of pins according to claim 1, characterized in that: One end of the tension spring is fixedly connected to the inside of the guide groove, and the other end of the tension spring is fixedly connected to the outside of the first pin.

4. The pin lock without leakage of pins according to claim 1, characterized in that: A first telescopic spring is fixedly connected between the groove and the second pin.

5. The pin lock without leakage of pins according to claim 2, characterized in that: The outer side of the second sleeve is fixedly connected with a fixing frame, a connecting shaft is arranged between one side of the fixing frame and the fixing block, and a shifting plate is fixedly sleeved on the outer side of the connecting shaft.

6. A pin lock without leakage of pins according to claim 5, characterized in that: One end of the connecting shaft is rotatably connected to one side of the fixing frame, and the other end of the connecting shaft is fixedly connected to one side of the fixing block.

7. The pin lock without leakage of pins according to claim 1, characterized in that: The groove is communicated with the guide groove, and one end of the first pin matches with the through hole.

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