Passive electronic lock cylinder with idle key

Abstract

The utility model discloses a key idling passive electronic lock cylinder, which belongs to the technical field of electronic lock cylinders and comprises a shell, an end cover is arranged at one end of the shell, an electrode and an insulating sleeve are mounted at one end of the end cover, and an unlocking shaft is mounted at the other end of the end cover; a rotating shaft is arranged at one end, far away from the end cover, of the unlocking shaft; lock cylinder locking steel balls are arranged on the outer circumference of the rotating shaft, and key locking steel balls are arranged at the end, close to the shell, of the end cover. When the key is authorized, the gear motor drives the unlocking shaft to enable the two arc-shaped grooves in the unlocking shaft to be aligned with the lock cylinder locking steel ball, meanwhile, the key locking steel ball enters the key locking hole to lock the end cover and the key together, the key is rotated, the lock cylinder locking steel ball comes out of the kidney-shaped hole of the shell and enters the two arc-shaped grooves of the unlocking shaft, and then the end cover and the key are locked together. The rotating shaft is separated from the shell and rotates along with the key, and unlocking is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of electronic lock cylinder technology, specifically a passive electronic lock cylinder for key free-spinning. Background Technology

[0002] Passive electronic lock cylinders currently have the following opening and locking methods:

[0003] 1. Electronic key authorization unlocks the device; removing the key automatically resets and locks the device via an internal energy storage mechanism.

[0004] 2. The lock is opened with an electronic key authorization. To lock the door, simply insert the electronic key again to authorize the locking.

[0005] The first type of lock core has a complex energy storage structure, low internal motor torque, high requirements for component processing and production installation precision, and poor stability in mass production.

[0006] The second method, while simple in structure, reliable in installation, and highly manufacturable in batches, is cumbersome to operate and may result in forgetting to lock it after unlocking.

[0007] Both of these lock cylinders share a common flaw: forcibly turning the key without authorization will damage the lock cylinder or the electronic key.

[0008] Therefore, this utility model provides a passive electronic lock cylinder for key free-spinning to solve the problems mentioned in the background art. Utility Model Content

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A passive electronic lock cylinder with key free-spinning capability includes a housing. One end of the housing has an end cap with a first mounting hole at one end. An electrode and an insulating sleeve are mounted on the end cap through the first mounting hole. The other end of the end cap has a first blind hole through which an unlocking shaft is mounted. A rotating shaft is located at the end of the unlocking shaft away from the end cap. A geared motor is mounted in the middle of the rotating shaft, and the output shaft of the geared motor is fixedly connected to the unlocking shaft. Lock cylinder locking balls are symmetrically arranged on the outer circumference of the rotating shaft, and a key locking ball is located at the end of the end cap near the housing.

[0011] A further embodiment: the outer shell is a cylindrical cavity, the outer circumference of the outer shell is provided with a boss, and the outer circumference of the outer shell is also symmetrically provided with waist-shaped holes.

[0012] A further solution: The top of the rotating shaft is recessed downward to form a platform, and a control plate is installed on the platform. Two second mounting holes are symmetrically provided on the outer circumference of the rotating shaft, and the locking ball of the lock cylinder is installed in the second mounting hole.

[0013] A further embodiment: The end cap is disc-shaped, and a second blind hole is provided on the outer circumference of the end cap. The second blind hole is connected to the first blind hole to form an L-shaped channel, and the key locking ball is installed in the second blind hole.

[0014] A further solution: The unlocking shaft includes a large end and a small end, with the end of the unlocking shaft closer to the reduction motor being the large end and the end of the unlocking shaft closer to the end cover being the small end.

[0015] A further embodiment: a flat portion is provided on the outer circumference of the small end, and two arc-shaped grooves are provided on the outer circumference of the large end.

[0016] A further solution: a limiting groove is provided at the end of the rotating shaft away from the reduction motor, a retaining ring is installed on the rotating shaft through the limiting groove, and an elastic baffle is fixedly connected to the retaining ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention optimizes the lock cylinder structure by providing a second mounting hole on the rotating shaft to house the lock cylinder locking ball, and a second blind hole on the end cover to house the key locking ball. Initially, when the key is not authorized, the lock cylinder locking ball protrudes from the outer circumference of the rotating shaft and enters the two oblong holes in the outer casing, connecting the rotating shaft and the outer casing. The key locking ball located in the second blind hole does not protrude from the outer circumference of the end cover. When the key is inserted and rotated, it rotates 360 degrees relative to the end cover due to the lack of a force point. When the key is authorized, the reduction motor drives the unlocking shaft, aligning the two arc-shaped grooves on the unlocking shaft with the lock cylinder locking ball. Simultaneously, the key locking ball, under the rotation of the reduction motor, emerges from the second blind hole and enters the key locking hole, locking the end cover and the key together. Rotating the key causes the lock cylinder locking ball to emerge from the oblong hole in the outer casing and enter the two arc-shaped grooves on the unlocking shaft, separating the rotating shaft from the outer casing. The rotating shaft rotates with the key, thus unlocking the lock. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 An explosion view of the key in an embodiment of this utility model Figure 1 ;

[0021] Figure 2 An explosion view of the key in an embodiment of this utility model Figure 2 ;

[0022] Figure 3 This is a cross-sectional view of the key locked state according to an embodiment of the present invention;

[0023] Figure 4This is a cross-sectional view of the lock cylinder in an unlocked state according to an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the key in an unlocked state according to an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional structural diagram of the lock cylinder in the locked state according to an embodiment of the present utility model.

[0026] In the diagram: 1. Outer shell; 101. Waist-shaped hole; 102. Boss; 2. Electrode; 3. Insulating sleeve; 4. End cap; 401. First mounting hole; 402. Second blind hole; 5. Unlocking shaft; 501. Arc-shaped groove; 502. Flat part; 6. Gear motor; 7. Rotating shaft; 701. Second mounting hole; 702. Limiting groove; 703. Platform; 704. Threaded boss; 8. Lock cylinder locking ball; 9. Key locking ball; 10. Retaining ring; 11. Elastic retaining plate; 12. Adapter; 13. Screw; 14. Control board; 15. Key; 1501. Key locking hole; 1502. Unlocking head. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] The key 15 involved in this application has a key locking hole 1501 and an unlocking head 1502 at its front end. The key locking hole 1501 is used to lock with the end cover 4, and the unlocking head 1502 is used to send a signal to the control board 14 to obtain authorization.

[0030] Please see Figure 1-6 In this embodiment of the utility model, a passive electronic lock cylinder with key free-spinning includes a control board 14, a housing 1, a rotating shaft 7, an end cover 4, an unlocking shaft 5, an electrode 2, an insulating sleeve 3, a reduction motor 6, a lock cylinder locking steel ball 8, and a key locking steel ball 9.

[0031] The control board 14 includes a main control unit, an input unit, and an output unit. The input unit consists of two lines, which are used for power supply and signal transmission. The output unit is electrically connected to the geared motor 6. The main control unit controls the motor to rotate forward or backward according to the input signal.

[0032] Furthermore, the outer shell 1 is a cylindrical cavity with a boss 102 on its outer circumference, which restricts circumferential rotation during installation. There are two oblong holes 101 symmetrically positioned on the left and right sides of the boss 102. When locked, half of the lock cylinder locking ball 8 enters the oblong hole and the other half is on the rotating shaft 7. The hollow part is used to place other components. The rotating shaft 7 is a cylindrical part with a U-shaped groove in the middle for installing the geared motor 6. There is a concave platform 703 on the cylinder for installing the control board 14. Two 3mm second mounting holes 701 are symmetrically distributed on the cylindrical surface near the front end for placing the lock cylinder locking ball 8 and the oblong holes 101.

[0033] The tail end of the rotating shaft 7 has a threaded boss 704, which is used to connect the locking tongue and other actuators. The front end of the rotating shaft 7 has two positioning holes, which are used to install the fixed end cover 4.

[0034] Specifically, the end cap 4 is a disc-shaped part with a first mounting hole 401 on one end face for mounting the electrode 2 and the insulating sleeve 3, and a first blind hole on the other end face for mounting the unlocking shaft 5. A second blind hole 402 is provided on the cylindrical surface, which is connected to the first blind hole in the middle to form an L-shaped channel. The second blind hole 402 is used to place the key locking ball 9.

[0035] like Figure 5-6 As shown, when key 15 is unauthorized, key 15 rotates freely relative to end cover 4; as Figure 3-4 As shown, when key 15 is authorized, the key locking ball 9 comes out from the second blind hole 402 under the rotation of the motor and enters the key 15 locking hole at the same time, connecting the end cover 4 and key 15 into one piece. When key 15 is turned, end cover 4 rotates together.

[0036] Furthermore, the unlocking shaft 5 is divided into a large end and a small end. The large end is connected to the output shaft of the reduction motor 6, and the small end is installed in the first mounting hole 401 of the end cover 4. There is a flat part 502 on the cylindrical surface of the small end. When the key locking ball 9 enters the flat part 502, the key 15 spins freely. There are two arc-shaped grooves 501 on the cylindrical surface of the large end. When the lock cylinder locking ball 8 enters the arc-shaped groove 501, the lock cylinder can rotate under the action of external force. When the unlocking shaft 5 rotates under the drive of the reduction motor 6, the lock cylinder locking ball 8 leaves the arc-shaped groove 501, and the other end enters the corresponding waist-shaped hole 101 of the outer shell 1, connecting the outer shell 1 and the shaft 7 into one unit. At this time, the lock cylinder directly transmits the force to the outer shell 1 through the lock cylinder locking ball 8 under the action of external force, and the lock cylinder will not rotate.

[0037] Preferably, a limiting groove 702 is provided at the end of the rotating shaft 7 away from the reduction motor 6, and a retaining ring 10 is installed on the limiting groove 702 to restrict the movement of the rotating shaft 7 within the housing 1; an elastic baffle 11 is used to position the rotating shaft 7 in the rotation direction, and ensures that the rotating shaft 7 is fixed relative to the housing 1 when the key 15 is removed; the adapter 12 serves as an external interface and is used to connect the lock tongue and other mechanisms via screws 13.

[0038] This utility model is limited only by the claims and their full scope and equivalents. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A key-turning passive electronic lock cylinder comprising a housing, characterized in that ； One end of the shell is provided with an end cover, one end of the end cover is provided with a first mounting hole, the end cover is provided with an electrode and an insulating sleeve through the first mounting hole, the other end of the end cover is provided with a first blind hole, and the end cover is provided with a lock shaft through the first blind hole; One end of the lock shaft away from the end cover is provided with a rotating shaft, a reduction motor is installed in the middle of the rotating shaft, and the output shaft of the reduction motor is fixedly connected with the lock shaft; The outer circumference of the rotating shaft is symmetrically provided with a lock core locking steel ball, and the end cover is provided with a key locking steel ball close to one end of the shell.

2. A key-turning passive electronic lock cylinder according to claim 1, wherein, The shell is a cylindrical cavity, the outer circumference of the shell is provided with a boss, and the outer circumference of the shell is also symmetrically provided with a waist-shaped hole.

3. A key-turning passive electronic lock cylinder according to claim 1, wherein, The top of the rotating shaft is concave downward to form a platform, a control panel is installed on the platform, and two second mounting holes are symmetrically arranged on the outer circumference of the rotating shaft, and the lock core locking steel ball is installed in the second mounting hole.

4. The key-turning passive electronic lock cylinder of claim 1, wherein, The end cover is disc-shaped, a second blind hole is formed in the outer circumference of the end cover, the second blind hole is in communication with the first blind hole to form an L-shaped channel, and the key locking steel ball is installed in the second blind hole.

5. A key-turning passive electronic lock cylinder according to claim 1, wherein, The lock shaft comprises a large end and a small end, the end of the lock shaft close to the reduction motor is the large end, and the end of the lock shaft close to the end cover is the small end.

6. A key-turning passive electronic lock cylinder according to claim 5, wherein, The outer circumference of the small end is provided with a flat position, and the outer circumference of the large end is provided with two circular-arc grooves.

7. A key-turning passive electronic lock cylinder according to any one of claims 1-6, wherein, One end of the rotating shaft away from the reduction motor is provided with a limiting groove, a check ring is installed in the limiting groove, and the check ring is fixedly connected with an elastic shielding piece.

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