A mechanical combination lock capable of being opened by a key

Abstract

The utility model provides a mechanical password lock can open the lock through the key, including lock body, lock pin, password wheel subassembly, still be equipped with key lock core on the lock body, this key lock core and lock pin transmission cooperation, the lock core rotation state drives the lock pin activity to open the lock, the utility model has the advantages that: the utility model discloses directly with the lock pin transmission cooperation through the key lock core, make in the correct key can directly open the password lock when inserting, reduced still to find back the password to open the lock cumbersome step to can fast open the lock, under the condition of time is abundant again to find back the password, and the user experience effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of lock technology, specifically a mechanical combination lock that can be unlocked with a key. Background Technology

[0002] Currently, most mechanical combination locks on the market can only be unlocked with a password. More advanced mechanical combination locks are designed with a password retrieval mechanism to prevent forgetting the password. However, the password retrieval mechanism on the market still requires the correct password to be retrieved before the lock can be opened. This means that unlocking the lock when the password is forgotten takes a long time, making it inconvenient to use. Utility Model Content

[0003] The technical problem this invention aims to solve is how to quickly unlock a door when the password is forgotten.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A mechanical combination lock that can be unlocked by a key includes a lock body, a lock pin, and a combination wheel assembly. The lock body is also provided with a key lock cylinder, which is driven to move the lock pin when the lock cylinder is rotating to unlock the lock.

[0006] Preferably, the combination wheel assembly includes a combination wheel, an inner wheel, an elastic wheel, a main shaft, and a locking rod, and also includes a movable rod that is axially movably connected to the main shaft. The movable rod has a plurality of protrusions spaced apart on its side surface, and the inner wheel has a stop block on its side surface. When the protrusions of the movable rod move into the range of the inner wheel stop block's movement trajectory, the combination wheel is moved until the inner wheel stop block abuts against the protrusions of the movable rod to display the correct combination.

[0007] Preferably, one end of the movable rod abuts against the lock cylinder, and the lock cylinder is provided with a pushing part that pushes the movable rod to move axially. When the lock cylinder is rotating, the movable rod is pushed to move axially.

[0008] Preferably, the pushing part is provided with an eccentric structure, and when the eccentric structure reaches its farthest distance from the movable rod, the protrusion of the movable rod is located within the movement trajectory range of the inner wheel stop block.

[0009] Preferably, there are two locking pins arranged symmetrically. A turntable is movably connected to the lock body. The turntable is provided with a positioning post, and the locking pin is provided with a slot that mates with the positioning post. When one of the locking pins moves, the inner wall of the locking pin slot pushes the positioning post on the turntable and drives the turntable to rotate, so that the other positioning post on the turntable pushes the other locking pin to move, thereby unlocking the two locking pins at the same time.

[0010] Preferably, a first spring is provided between the two locking pins.

[0011] Preferably, the locking rod and the main shaft are movably connected, and a second spring is provided between them. The locking rod is driven by the locking pin. The locking rod has several protrusions, and the inner wheel has a locking groove. When the combination lock is in the correct password state, all the inner wheel locking grooves are in a straight line and correspond to the protrusions on the locking rod. At that time, the locking rod can move axially to drive the locking pin to unlock. The lock cylinder is located at the end of the locking rod, and one of the two locking pins is driven by the locking rod, while the other locking pin is driven by the lock cylinder.

[0012] Preferably, a third spring is also included to keep the movable rod in contact with the lock cylinder at all times. The main shaft is provided with a movable hole for the movable rod to move, and the third spring is located in the movable hole at the tail of the movable rod.

[0013] Preferably, a drive wheel is movably connected to the main shaft, and a drive component is connected to the lock body. When the password is correct, the drive component is driven so that the drive wheel moves axially along the main shaft to push the inner wheel, thereby separating the inner wheel from the password wheel and changing the password.

[0014] Preferably, the contact point between the drive wheel and / or the drive component is provided with an inclined surface, and the radial movement of the drive component along the main shaft passes through the inclined surface, causing the drive wheel to move axially on the main shaft.

[0015] The beneficial effects of this utility model are: by directly engaging the key lock cylinder with the lock pin, the combination lock can be opened directly when the correct key is inserted, eliminating the cumbersome step of having to retrieve the password before unlocking. This allows for quick unlocking, and the user can retrieve the password later if there is sufficient time, resulting in a better user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the lock cylinder of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure of the locking pin of this utility model;

[0020] Figure 5 This is a schematic diagram of the movable rod.

[0021] Figure 6 This is a schematic diagram of the connection structure between multiple parts in the cipher wheel assembly;

[0022] Figure 7 This is a schematic diagram of the connection structure between multiple parts in the cipher wheel assembly from another perspective.

[0023] Figure 8 This is a schematic diagram of the drive wheel structure;

[0024] Figure 9 This is a schematic diagram of the drive component.

[0025] Explanation of reference numerals in the attached drawings: 1. Lock body; 2. Lock pin; 201. Slot; 202. Hole slot; 3. Lock cylinder; 301. Pushing part; 302. Transmission part; 4. Combination wheel; 5. Inner wheel; 501. Stop block; 502. Lock groove; 6. Elastic wheel; 7. Main shaft; 701. Movable hole; 8. Lock rod; 801. Protrusion; 9. Movable rod; 901. Protrusion; 10. Turntable; 1001. Positioning pin; 11. Second spring; 12. First spring; 13. Third spring; 14. Drive wheel; 15. Drive component; 16. Fourth spring; 17. Inclined surface. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example

[0028] Please see Figures 1-9The figure shows a mechanical combination lock that can be unlocked with a key. This combination lock is designed to allow users to not only unlock the lock but also retrieve the password when they forget it. Of course, retrieving the correct password is not immediate and requires a series of operations that take some time. Therefore, this application allows for quick unlocking with a key, and the correct password can be retrieved when there is sufficient time. This mechanical combination lock includes a lock body 1, a locking pin 2, and a combination wheel 4 assembly. The lock body 1 is also equipped with a key lock cylinder 3. It is worth noting that the key lock cylinder 3 is driven by the locking pin 2. When the lock cylinder 3 rotates, it drives the locking pin 2 to move and unlock. In this embodiment, a slot 201 is provided on the locking pin 2, and a transmission part 302 is provided at the end of the lock cylinder that is inserted into the locking pin slot 201. By rotating the lock cylinder, the transmission part touches the inner wall of the locking pin slot 201, forcing the locking pin to move and thus unlocking the lock. The combination wheel assembly 4 includes a combination wheel 4, an inner wheel 5, an elastic wheel 6, a main shaft 7, and a locking rod 8. It also includes a movable rod 9, which is axially movably connected to the main shaft 7. The side surface of the movable rod 9 is provided with several protrusions 901 spaced apart. The side surface of the inner wheel 5 is provided with a stop block 501. When the protrusions 901 of the movable rod 9 move within the movement trajectory range of the stop block 501 of the inner wheel 5, the combination wheel 4 is moved until the stop block 501 of the inner wheel 5 abuts against the protrusions 901 of the movable rod 9 to display the correct combination. It is further noteworthy that one end of the movable rod 9 abuts against the lock cylinder 3. The lock cylinder 3 is provided with a pushing part 301 that pushes the movable rod 9 axially. When the lock cylinder 3 is rotating, it pushes the movable rod 9 axially. When the lock cylinder 3 rotates, it not only drives the lock pin 2 to unlock, but also pushes the movable rod 9 with its pusher 301 until the protrusion 901 of the movable rod 9 moves into the movement trajectory range of the inner wheel 5 stop 501. When the password needs to be retrieved, the lock cylinder 3 is kept in the unlocked state, and then all the combination wheels 4 rotate in the set direction so that the stop 501 of the inner wheel 5 abuts against the protrusion 901 of the movable rod 9. At that time, the password displayed by the combination wheel 4 is the correct password, thus realizing password retrieval. Changing the password is basically the same as the principle of traditional combination locks. It is achieved by driving the inner wheel 5 to separate from the combination wheel 4, allowing the combination wheel 4 to rotate freely to the required password number, and then making the inner wheel 5 and the combination wheel 4 work together again after setting. The other structures of the combination wheel 4, inner wheel 5, and elastic wheel 6 are the same as those of existing combination locks, and will not be described in detail here.

[0029] In this embodiment, in order for the lock cylinder 3 to drive the movable rod 9 to move axially, the push part 301 is provided with an eccentric structure. When the eccentric structure reaches its farthest point against the movable rod 9, the protrusion 901 of the movable rod 9 is located within the movement trajectory range of the inner wheel 5 stop block 501. In this embodiment, when the lock cylinder 3 is in the locked state, the outer surface of the eccentric structure reaches the movable rod 9 at the closest distance. At that time, the protrusion 901 of the movable rod 9 does not affect the rotation of the inner wheel 5. That is, the protrusion 901 of the movable rod 9 is not in the inner wheel 5 lock groove 502, nor is it within the trajectory range of the inner wheel 5 stop block 501 as the inner wheel 5 rotates.

[0030] In this embodiment, there are two locking pins 2, which are symmetrically arranged. A turntable 10 is movably connected to the lock body 1. In this embodiment, the turntable and the lock body are connected by a pin. The turntable 10 is provided with a positioning post 1001, and the locking pin 2 is provided with a hole groove 202 that cooperates with the positioning post 1001. When one of the locking pins 2 moves, the inner wall of the hole groove 202 of the locking pin 2 pushes the positioning post 1001 on the turntable 10 and drives the turntable 10 to rotate, so that the other positioning post 1001 on the turntable 10 pushes the other locking pin 2 to move, so that the two locking pins 2 can be unlocked at the same time. In this embodiment, the locking rod 8 and the main shaft 7 are movably coupled, and a second spring 11 is provided between them. The locking rod 8 is driven by the locking pin 2. The locking rod 8 has several protrusions 801, and the inner wheel 5 has a locking groove 502. When the combination lock is in the correct password state, all the locking grooves 502 of the inner wheel 5 are in a straight line and correspond to the protrusions 801 on the locking rod 8. At this time, the locking rod 8 can move axially to drive the locking pin 2 to unlock. The lock cylinder 3 is located at the end of the locking rod 8, and one of the two locking pins 2 is driven by the locking rod 8, while the other locking pin 2 is driven by the lock cylinder 3. In this embodiment, the two locking pins 2 not only meet the consideration of the lock type, but also drive the lock cylinder 3 and the locking rod 8 respectively, realizing two unlocking methods, and the structural design is reasonable. In this embodiment, a first spring 12 is provided between the two locking pins 2. The first spring 12 can make both locking pins 2 return to their original position, thereby simplifying the structure.

[0031] This embodiment also includes a third spring 13 that always keeps the movable rod 9 in contact with the lock cylinder 3. The main shaft 7 is provided with a movable hole 701 for the movable rod 9 to move. The third spring 13 is located in the movable hole 701 at the tail of the movable rod 9. The third spring 13 always ensures that the movable rod 9 can abut against the lock cylinder 3, ensuring that the password can be retrieved when the lock cylinder 3 is unlocked, and that the rotation of the inner wheel 5 is not affected when the lock cylinder 3 is locked.

[0032] In order to drive the inner wheel 5 to move axially to change the combination lock, this embodiment has a drive wheel 14 movably connected to the main shaft 7 and a drive member 15 connected to the lock body 1. When the combination is correct, the drive member 15 is driven to move the drive wheel 14 axially along the main shaft 7 to push the inner wheel 5, so that the inner wheel 5 is separated from the combination wheel 4 to change the combination. In this embodiment, the drive member 15 is slidably connected to the lock body 1. In this embodiment, when the combination is wrong, at least one inner wheel 5 is restricted from axial movement by the protrusion 801 of the lock rod 8. Therefore, in the case of a wrong combination, neither the drive member 15 nor the drive wheel 14 can move. In this embodiment, the reset of the drive wheel and the drive rod is achieved by the fourth spring 16. The fourth spring is located between the outermost inner wheel and the main shaft on the side away from the drive wheel. The end of the main shaft has a diameter much larger than the main shaft. In this embodiment, a receiving cavity for accommodating the fourth spring is also provided at the end position.

[0033] In order for the driving component 15 to drive the driving wheel 14 to move axially, in this embodiment, an inclined surface 17 is provided at the contact point between the driving wheel 14 and / or the driving component 15. The driving component 15 moves radially along the main shaft 7 through the inclined surface, so that the driving wheel 14 moves axially on the main shaft 7. In this embodiment, both the driving wheel and the driving component are provided with inclined surfaces, and the two inclined surfaces are in contact.

Claims

1. A mechanical combination lock that can be unlocked by a key, comprising a lock body (1), a lock pin (2), and a combination wheel (4) assembly, characterized in that: The lock body (1) is also provided with a key lock cylinder (3), which is in transmission cooperation with the lock pin (2). When the lock cylinder (3) is rotating, it drives the lock pin (2) to move to unlock.

2. The mechanical combination lock that can be unlocked by a key as described in claim 1, characterized in that: The password wheel (4) assembly includes a password wheel (4), an inner wheel (5), an elastic wheel (6), a main shaft (7), and a locking rod (8), and also includes a movable rod (9). The movable rod (9) is axially movably connected to the main shaft (7). The side surface of the movable rod (9) is provided with a number of protrusions (901) at intervals. The side of the inner wheel (5) is provided with a stop block (501). When the protrusion (901) of the movable rod (9) moves to the range of the movement trajectory of the stop block (501) of the inner wheel (5), the password wheel (4) is moved until the stop block (501) of the inner wheel (5) abuts against the protrusion (901) of the movable rod (9) to display the correct password.

3. A mechanical combination lock as described in claim 2, characterized in that: One end of the movable rod (9) abuts against the lock cylinder (3). The lock cylinder (3) is provided with a pushing part (301) that pushes the movable rod (9) to move axially. When the lock cylinder (3) is rotating, the movable rod (9) is pushed to move axially.

4. A mechanical combination lock as described in claim 3, characterized in that: The push part (301) is provided with an eccentric structure. When the eccentric structure reaches the farthest distance of the movable rod (9), the protrusion (901) of the movable rod (9) is located within the movement trajectory range of the inner wheel (5) stop block (501).

5. A mechanical combination lock capable of being unlocked by a key as described in any one of claims 1-4, characterized in that: There are two locking pins (2) arranged symmetrically. A turntable (10) is movably connected to the lock body (1). The turntable (10) is provided with a positioning post (1001). The locking pin (2) is provided with a slot (202) that cooperates with the positioning post (1001). When one of the locking pins (2) moves, the inner wall of the slot (202) of the locking pin (2) pushes the positioning post (1001) on the turntable (10) and drives the turntable (10) to rotate, so that the other positioning post (1001) on the turntable (10) pushes the other locking pin (2) to move, so that the two locking pins (2) can be unlocked at the same time.

6. A mechanical combination lock as described in claim 5, characterized in that: A first spring (12) is provided between the two locking pins (2).

7. A mechanical combination lock as described in claim 5, characterized in that: The locking rod (8) is movably connected with the main shaft (7), and a second spring (11) is provided between them. The locking rod (8) is driven by the locking pin (2). The locking rod (8) is provided with several protrusions (801), and the inner wheel (5) is provided with a locking groove (502). When the combination lock is in the correct password state, all the inner wheel (5) locking grooves (502) are in a straight line and correspond to the protrusions (801) on the locking rod (8). At that time, the locking rod (8) can move axially to drive the locking pin (2) to unlock. The lock cylinder (3) is located at the end of the locking rod (8), and one of the two locking pins (2) is driven by the locking rod (8), and the other locking pin (2) is driven by the lock cylinder (3).

8. A mechanical combination lock as described in claim 5, characterized in that: It also includes a third spring (13) that keeps the movable rod (9) in contact with the lock cylinder (3) at all times. The main shaft (7) is provided with a movable hole (701) for the movable rod (9) to move. The third spring (13) is located in the movable hole (701) at the tail of the movable rod (9).

9. A mechanical combination lock as described in claim 7, characterized in that: A drive wheel (14) is movably connected to the main shaft (7), and a drive member (15) is connected to the lock body (1). When the password is correct, the drive member (15) is driven to move the drive wheel (14) axially along the main shaft (7) to push the inner wheel (5) so that the inner wheel (5) is separated from the password wheel (4) to change the password.

10. A mechanical combination lock as described in claim 9, characterized in that: An inclined surface is provided at the contact point between the drive wheel (14) and / or the drive member (15). The radial movement of the drive member (15) along the main shaft (7) through the inclined surface causes the drive wheel (14) to move axially on the main shaft (7).

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