Pin tumbler door lock

Abstract

The utility model belongs to the technical field of pin tumbler door locks, and particularly relates to a pin tumbler door lock which comprises a door and a mounting groove, the mounting groove is formed in the door and communicated with the outside, a lock cylinder is inserted into the mounting groove, two first sliding grooves communicated with the mounting groove are symmetrically formed in the lock cylinder, and two inserting blocks are slidably connected into the two first sliding grooves respectively. One ends of the two insertion blocks extend to the inner wall of the mounting groove and are in insertion fit with the mounting groove, and threaded rods are in threaded connection with the interiors of the insertion blocks; the two gear grooves are symmetrically formed in the lock cylinder and communicated with the two first sliding grooves respectively, a first bevel gear and a second bevel gear are rotationally connected into the gear grooves, and the first bevel gear and the second bevel gear are meshed with each other. The difficulty of replacing the lock cylinder of the pin tumbler door lock by a user is increased, and the lock cylinder of the pin tumbler door lock is inconvenient to replace by the user.

Description

Technical Field

[0001] The utility model belongs to the technical field of pin-and-tumble door locks, and in particular relates to a pin-and-tumble door lock. Background Art

[0002] Pin lock, also known as marble lock, bead lock, spring lock or pin bolt lock, is one of the most common lock structures. It is a lock that uses multiple cylindrical parts of different heights (called springs, pins or beads) to lock the lock core. When the correct key is inserted, each spring is pushed to the same height, and the lock core is released, so that it can be rotated to unlock. In this process, the pitch of the key corresponds to the pin hole one by one, and the depth of the tooth corresponds to the length of the lower pin, so that the contact surface of the upper pin and the lower pin coincides with the contact surface of the lock core and the lock body, so the lock core can rotate freely.

[0003] The installation method of the traditional pin-and-tumble door lock cylinder is relatively cumbersome, requiring the user to insert the lock cylinder through one side of the door into the installation groove on the door, and place the lock cylinder fixing plate on the other side of the installation groove on the door, and then use tools and bolts to fix the lock cylinder and the lock cylinder fixing plate to each other, and fix the lock cylinder in the installation groove on the door;

[0004] As a result, when the pin lock cylinder is damaged, it is difficult for the user to replace the pin lock cylinder because the installation method is complicated, and it is inconvenient for the user to replace the pin lock cylinder. In view of this, we propose a pin lock. Utility Model Content

[0005] The purpose of the utility model is to provide a pin door lock to solve the problems raised in the above background technology.

[0006] In view of this, the utility model provides a pin-and-tumble door lock, comprising:

[0007] A door and a mounting groove, wherein the mounting groove is provided in the door and communicates with the outside, a lock core is inserted in the mounting groove, two first slide grooves connected with the mounting groove are symmetrically provided in the lock core, two plug blocks are slidably connected in the two first slide grooves, and one end of the two plug blocks respectively extends to the inner wall of the mounting groove and is plugged into the mounting groove, and a threaded rod is connected to the inner thread of the plug block;

[0008] Two gear grooves, the two gear grooves are symmetrically arranged in the lock core and are respectively connected with the two first slide grooves, the first bevel gear and the second bevel gear are rotatably connected in the gear groove, and the first bevel gear and the second bevel gear are meshed with each other, one end of the first bevel gear passes through the inner wall of the gear groove and extends into the first slide groove to be fixed with one end of the threaded rod;

[0009] A swivel, the swivel is rotatably connected to the periphery of the lock core and is located on one side of the door;

[0010] A transmission assembly, which is located in the lock core and is used to drive the two second bevel gears to rotate;

[0011] A fixing component is located in the lock core and is used to fix the swivel.

[0012] Based on the above structure, through the provided installation groove and lock core, it is ensured that the lock core can be inserted into the installation groove, through the provided first sliding groove and plug block, it is ensured that the plug block can slide in the first sliding groove, and it is ensured that the two plug blocks can be inserted into the inner wall of the installation groove to fix the lock core in the installation groove and cannot move, through the provided threaded rod, it is ensured that when the two threaded rods rotate, the two plug blocks will be respectively affected by the threads of the two threaded rods to move away from or approach each other, through the provided gear groove, the first bevel gear and the second bevel gear are ensured to rotate in the gear groove, through the provided transmission assembly and swivel ring, it is ensured that when the user rotates the swivel ring, the swivel ring can drive the two second bevel gears to rotate through the transmission assembly, so that the two second bevel gears respectively drive the two first bevel gears to rotate in opposite directions, and through the provided fixing assembly, it is ensured that the user can fix the swivel ring through the fixing assembly to prevent outsiders from rotating the swivel ring outside the door and removing the lock core from the installation groove.

[0013] In the above technical solution, further, the transmission assembly includes:

[0014] Two movable grooves, the two movable grooves are symmetrically arranged in the lock core and are respectively connected to the two gear grooves, a first gear and a second gear are rotatably connected in the movable grooves, one end of the second gear is fixedly connected to a connecting rod, and one end of the connecting rod extends into the gear groove and is fixed to the second bevel gear, and a toothed belt is meshed between the first gear and the second gear;

[0015] Two rotating grooves, the two rotating grooves are symmetrically arranged in the lock core and are respectively connected to the two movable grooves, a third gear is rotatably connected in the rotating groove, and one end of the third gear extends into the movable groove and is fixed to the first gear;

[0016] An annular groove is provided on the peripheral side of the lock core and is connected to the two rotating grooves. A gear ring meshing with the two third gears is rotatably connected in the annular groove, and the gear ring is fixedly connected to the rotating ring.

[0017] In this technical solution, it is ensured that the user can replace the lock cylinder more conveniently.

[0018] In the above technical solution, further, one end of the first bevel gear is rotatably connected to the first sliding groove, and one end of the connecting rod is rotatably connected to the gear groove.

[0019] In the technical solution, it is ensured that one end of the first bevel gear can rotate normally in the first sliding groove, and it is ensured that one end of the connecting rod can rotate normally in the gear groove.

[0020] In the above technical solution, further, one end of the third gear is rotatably connected to the movable groove.

[0021] In this technical solution, it is ensured that one end of the third gear can rotate normally in the movable groove.

[0022] In the above technical solution, further, the fixing assembly includes:

[0023] The second slide groove is provided in the lock core and communicated with the outside, an insertion rod is slidably connected in the second slide groove, and one end of the insertion rod passes through the swivel and extends into the swivel to be plugged into the swivel, and two springs fixed to the inner wall of the second slide groove are fixedly connected to the insertion rod.

[0024] In this technical solution, it is ensured that outsiders cannot rotate the swivel from outside the door.

[0025] In the above technical solution, further, the threads on the two threaded rods have the same rotation direction.

[0026] In this technical solution, it is ensured that when the two threaded rods rotate, the two plug-in blocks will be respectively acted upon by the threads of the two threaded rods to move closer to or farther away from each other.

[0027] In the above technical solution, further, the threaded rod is located in the first sliding groove and is rotationally connected to the first sliding groove.

[0028] In this technical solution, it is ensured that the threaded rod can rotate normally in the first sliding groove.

[0029] The beneficial effects of the utility model are:

[0030] The two second bevel gears are driven by the two first bevel gears to rotate in opposite directions when the lock cylinder of the pin lock is damaged, which solves the problem that when the lock cylinder of the pin lock is damaged, the installation method is relatively cumbersome, which increases the difficulty of users replacing the lock cylinder of the pin lock and is inconvenient for users to replace the lock cylinder of the pin lock.

[0031] 2. The pin door lock ensures that the user can fix the rotating ring through the fixing component by setting the fixing component, thereby preventing an outsider from rotating the rotating ring outside the door and removing the lock core from the installation groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 It is a schematic diagram of a partial explosion structure of the utility model;

[0034] Figure 3 It is a cross-sectional structural schematic diagram of the lock core of the utility model;

[0035] Figure 4 This is one of the schematic diagrams of the internal structure of the lock core of the utility model;

[0036] Figure 5 This is the second schematic diagram of the internal structure of the lock core of the utility model.

[0037] The symbols in the figure are:

[0038] 1. Door; 2. Mounting groove; 3. Lock core; 4. First slide groove; 5. Insert block; 6. Threaded rod; 7. Gear groove; 8. First bevel gear; 9. Second bevel gear; 10. Swivel; 11. Movable groove; 12. First gear; 13. Second gear; 14. Connecting rod; 15. Toothed belt; 16. Rotating groove; 17. Third gear; 18. Annular groove; 19. Gear ring; 20. Second slide groove; 21. Insert rod; 22. Spring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0040] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0042] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0043] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0044] Embodiment 1:

[0045] See also Figure 1 - Figure 5 As shown, this embodiment provides a pin door lock, comprising:

[0046] A door 1 and a mounting groove 2, wherein the mounting groove 2 is provided in the door 1 and communicates with the outside, a lock core 3 is inserted in the mounting groove 2, two first slide grooves 4 communicating with the mounting groove 2 are symmetrically provided in the lock core 3, two plug blocks 5 are slidably connected in the two first slide grooves 4, and one end of the two plug blocks 5 respectively extends to the inner wall of the mounting groove 2 and is plugged into the mounting groove 2, and a threaded rod 6 is connected to the inner thread of the plug block 5;

[0047] Two gear grooves 7, the two gear grooves 7 are symmetrically arranged in the lock core 3 and are respectively connected with the two first slide grooves 4, the first bevel gear 8 and the second bevel gear 9 are rotatably connected in the gear groove 7, and the first bevel gear 8 and the second bevel gear 9 are meshed with each other, one end of the first bevel gear 8 passes through the inner wall of the gear groove 7 and extends into the first slide groove 4 and is fixed with one end of the threaded rod 6;

[0048] A swivel 10, which is rotatably connected to the periphery of the lock core 3 and is located at one side of the door 1;

[0049] A transmission assembly is located in the lock core 3 and is used to drive the two second bevel gears 9 to rotate;

[0050] The fixing component is located in the lock core 3 and is used to fix the rotating ring 10.

[0051] Embodiment 2:

[0052] This embodiment provides a pin-and-tumble door lock, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the transmission assembly includes:

[0053] Two movable grooves 11, the two movable grooves 11 are symmetrically arranged in the lock core 3 and are respectively connected to the two gear grooves 7, a first gear 12 and a second gear 13 are rotatably connected in the movable grooves 11, one end of the second gear 13 is fixedly connected to a connecting rod 14, and one end of the connecting rod 14 extends into the gear groove 7 and is fixed to the second bevel gear 9, and a toothed belt 15 is meshed between the first gear 12 and the second gear 13;

[0054] Two rotating grooves 16, the two rotating grooves 16 are symmetrically arranged in the lock core 3 and are respectively connected to the two movable grooves 11, a third gear 17 is rotatably connected in the rotating groove 16, and one end of the third gear 17 extends into the movable groove 11 and is fixed to the first gear 12;

[0055] The annular groove 18 is provided on the peripheral side of the lock core 3 and communicates with the two rotating grooves 16 . A gear ring 19 meshing with the two third gears 17 is rotatably connected in the annular groove 18 , and the gear ring 19 is fixedly connected to the rotating ring 10 .

[0056] Among them, the user rotates the rotating ring 10 by hand, so that the rotating ring 10 drives the gear ring 19 to rotate in the annular groove 18, so that the gear ring 19 drives the two third gears 17 to rotate in the two rotating grooves 16 respectively, and one end of the two third gears 17 drives the two first gears 12 to rotate in the two movable grooves 11 respectively. When the two first gears 12 rotate, the two first gears 12 will respectively drive the two second gears 13 to rotate in the two movable grooves 11 through the two toothed belts 15, and the two second gears 13 will respectively drive the two second bevel gears 9 to rotate in the two gear grooves 7 through the two connecting rods 14. When the two second bevel gears 9 rotate, the two first bevel gears 12 are connected to the gear grooves 7. The gear 8 will rotate in the two gear grooves 7 in opposite directions, so that the two first bevel gears 8 respectively drive the two threaded rods 6 to rotate in the two first slide grooves 4 in opposite directions, so that the two plug blocks 5 are respectively acted upon by the threads of the two threaded rods 6 to approach each other, and one end of the two plug blocks 5 respectively enters the two first slide grooves 4 from the inner wall of the installation groove 2. At this time, the fixation of the lock cylinder 3 is released, and then the user manually extracts the lock cylinder 3 from the installation groove 2 and replaces it. After the replacement is completed, the user manually inserts the replaced lock cylinder 3 into the installation groove 2, and then the user extends his hand into the installation groove 2 through the other side of the door 1 and pulls the plug rod 21 to allow the lock cylinder 3 to be replaced. One end of the insertion rod 21 enters the second sliding groove 20 from the rotating ring 10 and compresses the two springs 22. At this time, the fixation of the rotating ring 10 is released. Then the user rotates the rotating ring 10 in the opposite direction by hand, so that the rotating ring 10 drives the gear ring 19 to rotate in the opposite direction in the annular groove 18, so that the gear ring 19 drives the two third gears 17 to rotate in the opposite direction in the two rotating grooves 16 respectively, and one end of the two third gears 17 drives the two first gears 12 to rotate in the opposite direction in the two movable grooves 11 respectively. When the two first gears 12 rotate in the opposite direction, the two first gears 12 will respectively drive the two second gears 13 to rotate in the opposite direction in the two movable grooves 11 through the two toothed belts 15, so that the two The second gear 13 drives the two second bevel gears 9 to rotate in the two gear grooves 7 in the opposite direction through the two connecting rods 14. When the two second bevel gears 9 rotate in the opposite direction, the two first bevel gears 8 will rotate in the opposite directions in the two gear grooves 7 respectively, so that the two first bevel gears 8 respectively drive the two threaded rods 6 to rotate in the opposite directions in the two first slide grooves 4, so that the two plug-in blocks 5 are respectively affected by the threads of the two threaded rods 6 and move away from each other, and one end of the two plug-in blocks 5 is respectively inserted from the two first slide grooves 4 into the inner wall of the mounting groove 2 to fix the lock cylinder 3 in the mounting groove 2, ensuring that the user can replace the lock cylinder 3 more conveniently.

[0057] Embodiment 3:

[0058] This embodiment provides a pin door lock, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: one end of the first bevel gear 8 is rotatably connected to the first slide groove 4, and one end of the connecting rod 14 is rotatably connected to the gear groove 7.

[0059] Here, it is ensured that one end of the first bevel gear 8 can rotate normally in the first sliding groove 4 , and it is ensured that one end of the connecting rod 14 can rotate normally in the gear groove 7 .

[0060] Embodiment 4:

[0061] This embodiment provides a pin door lock, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: one end of the third gear 17 is rotatably connected to the movable groove 11.

[0062] Here, it is ensured that one end of the third gear 17 can rotate normally in the movable groove 11 .

[0063] Embodiment 5:

[0064] This embodiment provides a pin-and-tumble door lock, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the fixing assembly includes:

[0065] The second slide groove 20 is provided in the lock core 3 and communicated with the outside. An insertion rod 21 is slidably connected in the second slide groove 20, and one end of the insertion rod 21 passes through the rotating ring 10 and extends into the rotating ring 10 to be plugged into and matched with the rotating ring 10. Two springs 22 fixed to the inner wall of the second slide groove 20 are fixedly connected to the insertion rod 21.

[0066] Among them, when the user needs to rotate the swivel 10, the user extends his hand into the installation groove 2 through the other side of the door 1, and pulls the insertion rod 21, so that one end of the insertion rod 21 enters the second sliding groove 20 from the swivel 10 and compresses the two springs 22. At this time, the fixation of the swivel 10 is released. When the user needs to fix the swivel 10, the user releases the hand pulling the insertion rod 21, and allows one end of the insertion rod 21 to be inserted into the swivel 10 under the action of the rebound force of the two springs 22, thereby fixing the swivel 10 to ensure that outsiders cannot rotate the swivel 10 from outside the door.

[0067] Embodiment 6:

[0068] This embodiment provides a pin door lock, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the threads on the two threaded rods 6 have the same rotation direction.

[0069] It is ensured that when the two threaded rods 6 rotate, the two inserting blocks 5 are respectively acted upon by the threads of the two threaded rods 6 to move closer to or farther from each other.

[0070] Embodiment 7:

[0071] This embodiment provides a pin door lock, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the threaded rod 6 is located in the first sliding groove 4 and is rotatably connected to the first sliding groove 4.

[0072] Herein, it is ensured that the threaded rod 6 can rotate normally in the first sliding groove 4 .

[0073] When the lock cylinder 3 is damaged and needs to be replaced, the user extends his hand into the installation groove 2 through the other side of the door 1 and pulls the insertion rod 21, so that one end of the insertion rod 21 enters the second sliding groove 20 from the rotating ring 10 and compresses the two springs 22. At this time, the fixation of the rotating ring 10 is released. Then the user rotates the rotating ring 10 by hand, so that the rotating ring 10 drives the gear ring 19 to rotate in the annular groove 18, so that the gear ring 19 drives the two third gears 17 to rotate in the two rotating grooves 16 respectively, and one end of the two third gears 17 drives the two first gears 12 to rotate in the two movable grooves 11 respectively. When the two first gears 12 rotate, the two first gears 12 will respectively drive the two second gears 13 to rotate in the two movable grooves 11 through the two toothed belts 15. The two second gears 13 are respectively driven by the two connecting rods 14 to drive the two second bevel gears 9 to rotate in the two gear grooves 7. When the two second bevel gears 9 rotate, the two first bevel gears 8 will respectively rotate in the two gear grooves 7 in opposite directions. The two first bevel gears 8 are respectively driven by the two threaded rods 6 to rotate in the two first slide grooves 4 in opposite directions, so that the two plug-in blocks 5 are respectively acted upon by the threads of the two threaded rods 6 to approach each other, and one end of the two plug-in blocks 5 is respectively entered into the two first slide grooves 4 from the inner wall of the mounting groove 2. At this time, the fixation of the lock cylinder 3 is released, and then the user manually pulls the lock cylinder 3 out of the mounting groove 2 and replaces it. After the replacement is completed, the user manually inserts the replaced lock cylinder 3 into the mounting groove 2, and then The user extends his hand into the installation groove 2 through the other side of the door 1 and pulls the insertion rod 21, so that one end of the insertion rod 21 enters the second sliding groove 20 from the rotating ring 10 and compresses the two springs 22. At this time, the fixation of the rotating ring 10 is released, and then the user rotates the rotating ring 10 in the opposite direction by hand, so that the rotating ring 10 drives the gear ring 19 to rotate in the opposite direction in the annular groove 18, so that the gear ring 19 drives the two third gears 17 to rotate in the opposite direction in the two rotating grooves 16 respectively, and one end of the two third gears 17 drives the two first gears 12 to rotate in the opposite direction in the two movable grooves 11 respectively. When the two first gears 12 rotate in the opposite direction, the two first gears 12 will respectively drive the two second gears 13 to rotate in the opposite direction in the two movable grooves 11 through the two toothed belts 15, so that The two second gears 13 drive the two second bevel gears 9 to rotate in the opposite directions in the two gear grooves 7 through the two connecting rods 14 respectively. When the two second bevel gears 9 rotate in the opposite directions, the two first bevel gears 8 will rotate in the opposite directions in the two gear grooves 7 respectively, so that the two first bevel gears 8 respectively drive the two threaded rods 6 to rotate in the opposite directions in the two first slide grooves 4, so that the two plug blocks 5 are respectively affected by the threads of the two threaded rods 6 and move away from each other, and one end of the two plug blocks 5 is respectively inserted from the two first slide grooves 4 into the inner wall of the installation groove 2 to fix the lock cylinder 3 in the installation groove 2, ensuring that the user can replace the lock cylinder 3 more conveniently. When the lock cylinder 3 is fixed in the installation groove 2, the user releases the hand pulling the plug rod 21,One end of the insertion rod 21 is inserted into the swivel 10 under the rebound force of the two springs 22, and the swivel 10 is fixed to ensure that outsiders cannot rotate the swivel 10 from outside the door.

[0074] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A pin door lock, characterized in that: include: A door (1) and a mounting groove (2), wherein the mounting groove (2) is provided in the door (1) and communicates with the outside, a lock core (3) is inserted in the mounting groove (2), two first sliding grooves (4) connected to the mounting groove (2) are symmetrically provided in the lock core (3), two plug blocks (5) are slidably connected in the two first sliding grooves (4), and one end of the two plug blocks (5) respectively extends to the inner wall of the mounting groove (2) and is plugged and matched with the mounting groove (2), and a threaded rod (6) is connected to the inner thread of the plug block (5); Two gear grooves (7), the two gear grooves (7) are symmetrically arranged in the lock core (3) and are respectively connected to the two first slide grooves (4), a first bevel gear (8) and a second bevel gear (9) are rotatably connected in the gear grooves (7), and the first bevel gear (8) and the second bevel gear (9) are meshed with each other, one end of the first bevel gear (8) passes through the inner wall of the gear groove (7) and extends into the first slide groove (4) to be fixed to one end of the threaded rod (6); A swivel (10), the swivel (10) being rotatably connected to the peripheral side of the lock core (3) and being located on one side of the door (1); A transmission assembly, the transmission assembly is located in the lock core (3) and is used to drive the two second bevel gears (9) to rotate; A fixing component is located in the lock core (3) and is used to fix the rotating ring (10).

2. A pin door lock according to claim 1, characterized in that: The transmission assembly comprises: Two movable grooves (11), the two movable grooves (11) are symmetrically arranged in the lock core (3) and are respectively connected to the two gear grooves (7), a first gear (12) and a second gear (13) are rotatably connected in the movable grooves (11), one end of the second gear (13) is fixedly connected to a connecting rod (14), and one end of the connecting rod (14) extends into the gear groove (7) and is fixed to the second bevel gear (9), and a toothed belt (15) is meshed between the first gear (12) and the second gear (13); Two rotating grooves (16), the two rotating grooves (16) are symmetrically arranged in the lock core (3) and are respectively connected to the two movable grooves (11), a third gear (17) is rotatably connected in the rotating groove (16), and one end of the third gear (17) extends into the movable groove (11) and is fixed to the first gear (12); An annular groove (18) is provided on the peripheral side of the lock core (3) and is connected to the two rotating grooves (16); a toothed ring (19) meshing with the two third gears (17) is rotatably connected in the annular groove (18), and the toothed ring (19) is fixedly connected to the rotating ring (10).

3. A pin door lock according to claim 2, characterized in that: One end of the first bevel gear (8) is rotatably connected to the first sliding groove (4), and one end of the connecting rod (14) is rotatably connected to the gear groove (7).

4. A pin door lock according to claim 2, characterized in that: One end of the third gear (17) is rotatably connected to the movable groove (11).

5. The pin door lock according to claim 1, characterized in that: The fixing assembly comprises: A second slide groove (20), the second slide groove (20) is provided in the lock core (3) and communicated with the outside, an insertion rod (21) is slidably connected in the second slide groove (20), and one end of the insertion rod (21) passes through the rotating ring (10) and extends into the rotating ring (10) to be plugged into the rotating ring (10), and two springs (22) fixed to the inner wall of the second slide groove (20) are fixedly connected to the insertion rod (21).

6. The pin door lock according to claim 1, characterized in that: The threads on the two threaded rods (6) have the same rotation direction.

7. The pin door lock according to claim 1, characterized in that: The threaded rod (6) is located in the first sliding groove (4) and is rotatably connected to the first sliding groove (4).

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