Passive intelligent lock

Abstract

The present invention discloses a passive intelligent lock, which comprises a lock body and a rechargeable key with a built-in power supply that cooperates with the lock body. The lock body includes a lock shell, a lock core and a lock pin. The lock core includes a lock core mounting seat and a lock core cover plate. The lock core mounting seat contains an electronic driving part and a mechanical transmission part. The mechanical transmission part includes a main push rod and a reset push rod. Both the main push rod and the reset push rod are horizontally slidably inserted into a matching chute with a limit step at the bottom of the lock core mounting seat. The wide side of the reset push rod matches the limit step. On the tail end face of the reset push rod, at least two guide rods extend. A reset spring is sleeved on the guide rods. The lock core mounting seat is also provided with a guide hole groove. The structure of the present invention is ingenious. After the key is removed, under the action of the restoring force of only one set of reset springs, the reset push rod and the main push rod can be directly driven to reset, with strong practicability and worthy of promotion.

Description

Technical Field

[0001] The invention belongs to the field of intelligent control, and in particular relates to a passive intelligent lock. Background Art

[0002] In the prior art, there is usually a one-to-one relationship between locks and keys. However, for managers who need to manage many locked houses, vehicles and other items, they usually need to carry a lot of keys with them, which is not only inconvenient to carry, but also inconvenient to find the keys. For this reason, some electronic locks have emerged.

[0003] The patent with patent number 201610092500.1 discloses an automatically reset lock core, including a lock shell, an inner shell main compartment, a motor, a chuck and a lock pin. The motor drives the chuck to rotate to make way for the telescopic channel. By turning the key, the inner shell main compartment rotates in the lock shell, and then the lock pin slides into the telescopic channel to complete unlocking. It also includes a reset push rod and a lever. A lever is connected between the motor and the chuck, and the lever is located in the limit opening of the reset push rod. The key is inserted to push the reset push rod to move out of the limit opening so that the lever is in a rotatable state. In this state, the motor can drive the chuck to rotate through the lever to complete unlocking; the key is turned in the opposite direction, the lock pin is reset, and the lock pin slides out of the telescopic channel and is limited in the lock shell to complete locking. After the key is pulled out, the reset push rod is reset immediately, and the lever slides into the limit opening again. It also includes a first reset spring, the The reset push rod is elastically reset by the first reset spring, the inner side of the reset push rod is provided with an inclined surface, and the lever is provided with a dial head. During the elastic reset process, the dial head slides into the limit mouth along the inclined surface to complete the mechanical reset of the lever. It also includes a main push rod and a second reset spring. The main push rod is elastically reset by the second reset spring. One end of the main push rod is in contact with the reset push rod, and the other end is the key push end. After the key is inserted, the main push rod is pushed and the reset push rod is indirectly retracted to complete the unlocking action. In actual operation, the first reset spring can complete the mechanical reset of the lever by resetting alone, and the second reset spring completes the independent reset action of the main push rod by applying force to the main compartment of the inner liner. Therefore, the two push rods are reset separately in the reset action. The main push rod and the reset push rod are reset at two levels, which can make the reset speed faster and the reset effect better. It also includes an insert and a third reset spring. The insert is arranged in the main compartment of the inner liner, and the lock pin is placed in the insert, and resets to and fro by the third reset spring. The advantages are: the two horizontal reset push rods of the product are equipped with a mechanical reset device for driving the lever to automatically reset, so that after unlocking, the electronic drive part does not need to be locked, but only relies on the mechanical reset device to achieve automatic locking. However, this method still has the problems of complex structure, cumbersome process, poor reset accuracy, easy damage, and inability to perform remote monitoring. Therefore, further improvements need to be made to the mechanical reset part and the detection part after reset. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a passive intelligent lock.

[0005] The present invention is realized by the following technical solutions:

[0006] A passive intelligent lock includes a lock body and a rechargeable key with its own power supply that cooperates with it. The lock body includes a lock case, a lock core, and a lock pin. The lock core includes a lock core mounting seat and a lock core cover plate. The lock core mounting seat contains an electronic drive part and a mechanical transmission part. The front end of the lock core mounting seat is the insertion end for the key;

[0007] The electronic drive part is arranged in the lock core mounting seat. The electronic drive part includes a motor. A lever with a dial head is connected to the drive shaft of the motor. At the front end of the lever, a chuck with a telescopic channel is connected. The motor drives the chuck to rotate to make the telescopic channel available. By turning the key, the lock core rotates in the lock case and the lock pin slides into the telescopic channel to complete unlocking; The mechanical transmission part includes a main push rod and a reset push rod. One end of the main push rod is in contact with the reset push rod, and the other end is the key push-in end. After the key is inserted, it pushes the main push rod and indirectly pushes the reset push rod to complete the unlocking action. The main push rod and the reset push rod are both horizontally slidably inserted into a matching chute with a limit step at the bottom of the lock core mounting seat. The wide side of the reset push rod matches the limit step. A limit port is provided on the inner end surface of the tail end of the reset push rod. An inclined surface is provided on the inner side surface of the reset push rod. The inclined surface is connected to the limit port. At least two guide rods extend from the tail end surface of the reset push rod. A reset spring is sleeved on the guide rods. The lock core mounting seat is also provided with a guide hole groove with a limiting function corresponding to the advancing position of the guide rods. Thus, both the main push rod and the reset push rod are elastically reset by the reset spring;

[0008] During the elastic reset process of the dial head on the lever, the dial head slides into the limit port along the inclined surface to complete the mechanical reset of the lever; When the key is inserted and the reset push rod is pushed to move and the limit port is vacated, the lever is in a rotatable state. In this state, the motor can drive the chuck to rotate through the lever to complete unlocking; When the key is rotated in the reverse direction, the lock pin is reset and the lock pin slides out of the telescopic channel and is limited in the lock case to complete locking. Then the key is pulled out, the reset push rod is immediately reset, driving the main push rod to also reset, and the lever slides back into the limit port.

[0009] Preferably, the contact part of the key includes a contact point at the front and a key metal contact housing used as a ground wire. The contact point is a single-wire half-duplex communication time-division multiplexing contact that combines the key power line and the key communication line. At a position opposite to the key, at the front of the lock core, that is, the front end of the lock core mounting seat, there is a ring-shaped power-on communication contact that matches the contact point on the key and a ground outer ring used for grounding; When the key is inserted into the lock core, the contact point is in contact with the power-on communication contact, and the key metal contact housing is in contact with the ground outer ring to achieve communication, power supply, and grounding.

[0010] Preferably, a spring pin type position sensor is further provided between the lock housing and the lock core. When the lock core is at the initial position where it just starts to lock, at the place where the spring pin contacts the lock housing, an insulating area is provided on the lock housing to determine whether the lock core has returned to the initial locked position after unlocking and then locking by identifying different circuits. More preferably, the lower end of the spring pin type position sensor corresponds to the position of the motor, and the upper end passes through the lock core cover plate and contacts the lock housing.

[0011] Preferably, a circumferential anti - detachment groove is provided at the edge of the key end. One end of the main push rod that contacts the key extends into the front end of the lock core mounting seat where it contacts the key, and contacts the inner wall of the grounded inner ring at the front end of the lock core mounting seat. Between the lock core mounting seat and the lock housing, a positioning groove is provided on the lock housing, and a through - hole is provided on the wall of the grounded outer ring where the main push rod contacts the grounded outer ring. An anti - detachment member is embedded. Both ends of the anti - detachment member are arc - shaped protrusions, and the two ends of the anti - detachment member respectively match the anti - detachment groove and the positioning groove. That is, when the key is not inserted, one end of the anti - detachment member directly contacts the positioning groove in the lock housing, and the other end passes through the through - hole on the wall of the grounded outer ring and contacts the side of the main push rod; when the key is inserted, the main push rod is pushed inward by the edge of the key end, so that it is no longer the main push rod that contacts the inner side of the through - hole, but the anti - detachment groove on the key; when the key is inserted and rotated to drive the lock core to rotate relative to the lock housing, the anti - detachment member is squeezed out of the positioning groove of the lock housing under the action of pressure, and thus enters the anti - detachment groove at the edge of the key end. When the key is rotated to the position where the positioning groove of the lock housing is located and the key is pulled out, the pulling force of the key squeezes the anti - detachment member into the positioning groove again, so that the key can be pulled out, which can prevent the key from falling off during the unlocking process; after the key is taken out, the main push rod is reset again under the push of the reset push rod, blocking the inner side of the through - hole to prevent the anti - detachment member from coming out.

[0012] The beneficial effects of the present invention are:

[0013] The internal structure of the lock core in this application is ingenious, and the components cooperate closely. After removing the key, under the restoring force of only one set of return springs, the return push rod and the main push rod can be directly driven to retreat along the chute at the bottom of the lock core mounting seat and return to their original positions. At this time, the wide side of the return push rod abuts against the limiting step, which also drives the dial to rotate back to the limiting port, drives the chuck to return to its position, closes the telescopic channel, and has precise reset, greatly reducing the error-prone probability of the existing multi-set return springs for reset. In addition, when the interface between the lock core and the key is a single-wire half-duplex interface, with a single-point transmission point in the middle and a grounding end on the outer ring, it can achieve the time-division multiplexing function of power supply, signal confirmation, and recharging for the lock core, with a high fault tolerance rate. It is very easy to align when inserted, saving the time of aligning the existing several contacts between the key and the lock core, and improving the unlocking speed. By setting an anti-detachment groove at the edge of the key end and an anti-detachment part on the lock body, the key can be prevented from falling off during the unlocking process all the time. The structure is precise and the practicability is strong, which is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] For ease of explanation, the present invention will be described in detail by the following specific embodiments and accompanying drawings.

[0015] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0016] Figure 2 is Figure 1 a cross-sectional structure schematic diagram of

[0017] Figure 3 is a disassembled structure schematic diagram of the lock core

[0018] Figure 4 is a structure schematic diagram of the electronic drive part and the mechanical transmission part inside the lock core;

[0019] Figure 5 is a structure schematic diagram of the lock core without the lock core mounting seat;

[0020] Figure 6 is a three-dimensional structure schematic diagram of the lock core mounting seat;

[0021] Figure 7 is a three-dimensional structure schematic diagram of the lock core mounting seat from another angle;

[0022] Figure 8 is a three-dimensional structure schematic diagram of the key;

[0023] Figure 9 is Figure 8 a cross-sectional view. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Such as Figures 1-9As shown in the figure, a passive intelligent lock includes a lock body 10 and a rechargeable key 20 with its own power supply that cooperates with it. The lock body includes a lock shell 1, a lock core 2, and a lock pin 30. The lock core 2 includes a lock core mounting seat 3 and a lock core cover plate. The lock core mounting seat 3 contains an electronic drive part and a mechanical transmission part. The front end of the lock core mounting seat 3 is the insertion end of the key 20.

[0025] The electronic drive part is arranged in the lock core mounting seat 3. The electronic drive part includes a motor 4. A lever 5 with a dial head 5.1 is connected to the drive shaft of the motor 4. At the front end of the lever 5, a chuck 6 with a telescopic channel 6.1 is connected. The motor 4 drives the chuck 6 to rotate to make way for the telescopic channel 6.1. By rotating the key 20, the lock core 2 rotates in the lock shell 1, and then the lock pin 30 slides into the telescopic channel 6.1 to complete unlocking. The mechanical transmission part includes a main push rod 7 and a reset push rod 8. One end of the main push rod 7 is in contact with the reset push rod 8, and the other end is the contact end with the key 20. After the key 20 is inserted, it pushes the main push rod 7 and indirectly pushes the reset push rod 8 to complete the unlocking action. The main push rod 7 and the reset push rod 8 are both horizontally slidably inserted into a matching chute 3.1 with a limit step at the bottom of the lock core mounting seat 3. The wide side of the reset push rod 8 matches the limit step. A limit opening is provided on the inner end surface of the tail end of the reset push rod 8. An inclined surface 8.1 is provided on the inner side surface of the reset push rod 8. The inclined surface 8.1 is connected to the limit opening. At least two guide rods 8.2 extend from the tail end surface of the reset push rod 8. A reset spring 8.3 is sleeved on the guide rods 8.2. The lock core mounting seat 3 is also provided with a guide hole groove 3.2 with a limiting function corresponding to the advancing position of the guide rods 8.2. Thus, both the main push rod 7 and the reset push rod 8 are elastically reset by the reset spring. The guide hole groove 3.2 with a limiting function is filled with a plug 3.3 in the guide hole groove.

[0026] During the elastic reset process of the dial head 5.1 on the lever 5, the dial head 5.1 slides into the limit opening along the inclined surface 8.1 to complete the mechanical reset of the lever 5. When the key 20 is inserted and pushed to move the reset push rod 8 to make way for the limit opening, the lever 5 is in a rotatable state. In this state, the motor 4 can drive the chuck 6 to rotate through the lever 5 to complete unlocking. When the key 20 is rotated in the reverse direction, the lock pin 30 is reset to slide out of the telescopic channel 6.1 and is limited in the lock shell 1 to complete locking. Then the key 20 is pulled out, and the reset push rod 8 is immediately reset, driving the main push rod 7 to also reset, and the lever 5 slides back into the limit opening again.

[0027] The contact part of the key 20 includes a contact point 20.1 at the front and the key metal contact housing serving as a ground wire. The contact point 20.1 is a single-wire half-duplex communication time-division multiplexing contact that combines the key power line and the key communication line. At a position relative to the key 20, at the front of the front part of the lock core 2, i.e., the front part of the lock core mounting seat 3, there is an annular power-on communication contact 2.1 that matches the contact point 20.1 on the key and a ground outer ring 2.2 for grounding. When the key 20 is inserted into the lock core 2, the contact point 20.1 contacts the power-on communication contact 2.1, and the key metal contact housing contacts the ground outer ring 2.2 to achieve communication, power supply, and grounding.

[0028] Between the lock housing 1 and the lock core 2, there is also a spring pin type position sensor 2.3. When the lock core 2 is in the initial position of just being locked, at the place where the spring pin type position sensor 2.3 contacts the lock housing 1, there is an insulating area on the lock housing 1 to judge whether the lock core has returned to the initial position when locked by identifying different circuits after the lock core is unlocked and then locked. The lower end of the spring pin type position sensor 2.3 corresponds to the position of the motor, and the upper end passes through the lock core cover plate and contacts the lock housing 1.

[0029] At the end edge of the key 20, there is a circle of anti-detachment grooves 20.2. One end of the main push rod 7 that contacts the key 20 extends into the front end of the lock core mounting seat 3 that contacts the key 20 and contacts the inner wall of the ground outer ring 2.2 at the front end of the lock core mounting seat 3. Between the ground outer ring 2.2 and the lock housing 1, by providing a positioning groove 1.1 on the lock housing 1 and a through hole 2.5 on the wall of the ground outer ring 2.2 where the main push rod 7 contacts the ground outer ring 2.2, an anti-detachment part 2.4 is embedded. Both ends of the anti-detachment part 2.4 are arc-shaped protrusions, and the two ends of the anti-detachment part respectively adapt to the anti-detachment groove and the positioning groove. That is, when the key 20 is not inserted, one end of the anti-detachment part 2.4 directly contacts the positioning groove 1.1 inside the lock housing 1, and one end passes through the through hole 2.5 on the wall of the ground outer ring 2.2 and contacts the side of the main push rod 7. When the key 20 is inserted, the main push rod 7 is pushed inward by the end edge of the key 20, so that it is no longer the main push rod 7 that contacts the inner side of the through hole 2.5, but the anti-detachment groove 20.2 on the key 20. When the key 20 is inserted and rotated to drive the lock core 2 to rotate relative to the lock housing 1, the anti-detachment part 2.4 is squeezed out of the positioning groove 1.1 of the lock housing 1 under the action of pressure and thus enters the anti-detachment groove 20.2 at the end edge of the key 20. When the key 20 rotates to the position where the positioning groove 1.1 of the lock housing 1 is located again and the key is pulled out, the force of pulling out the key squeezes the anti-detachment part 2.4 into the positioning groove 1.1 again, so that the key 20 can be pulled out to prevent the key from falling off during the unlocking process. After the key 20 is taken out, the main push rod 7 is reset again under the push of the reset push rod 8 to block the inner side of the through hole 2.5 and prevent the anti-detachment part 2.4 from coming out.

[0030] The internal structure of the lock core of this application is ingenious, and the components cooperate closely. After removing the key, under the restoring force of only one set of return springs, the return push rod and the main push rod can be directly driven to retreat along the chute at the bottom of the lock core mounting seat and return to their original positions. At this time, the wide side of the return push rod abuts against the limit step, and the paddle is also driven to rotate back to the limit port, driving the chuck to return to its position and closing the telescopic channel. The reset is accurate, greatly reducing the probability of error in the existing method that requires multiple sets of return springs for reset; in addition, the interface between the lock core and the key is a single-wire half-duplex interface, with a single-point transmission point in the middle and a grounding end on the outer ring, which can realize the time-division multiplexing function of power supply to the lock core, signal confirmation, and recharge power supply. It has a high fault tolerance rate and is very easy to align when inserted, saving the time required to align the several contacts between the existing key and the lock core first, and improving the unlocking speed; by setting an anti-detachment groove at the edge of the key end and an anti-detachment part on the lock body, the key can be prevented from falling off during the unlocking process all the time. The structure is precise and the practicability is strong, which is worthy of promotion.

[0031] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that is conceived without creative labor should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. Passive intelligent lock, comprising a lock body and a rechargeable key with its own power supply that cooperates with it. The lock body includes a lock shell, a lock core and a lock pin. The lock core includes a lock core mounting seat and a lock core cover plate. The lock core mounting seat contains an electronic drive part and a mechanical transmission part. The front end of the lock core mounting seat is the insertion end of the key; The electronic drive part is arranged in the lock core mounting seat. The electronic drive part includes a motor. A lever with a dial head is connected to the drive shaft of the motor. At the front end of the lever, a chuck with a telescopic channel is connected. The motor drives the chuck to rotate to make the telescopic channel available. After the lock core rotates in the lock shell by turning the key, the lock pin slides into the telescopic channel to complete unlocking. It is characterized in that, The mechanical transmission part includes a main push rod and a reset push rod. One end of the main push rod is in contact with the reset push rod, and the other end is the key insertion end. After the key is inserted, it pushes the main push rod and indirectly pushes the reset push rod to complete the unlocking action. Both the main push rod and the reset push rod are horizontally slidably inserted into a matching chute with a limiting step at the bottom of the lock core mounting seat. The wide side of the reset push rod matches the limiting step. A limiting port is provided on the inner end surface of the tail end of the reset push rod, and an inclined surface is provided on the inner side surface of the reset push rod. The inclined surface is connected to the limiting port. On the tail end surface of the reset push rod, at least two guide rods extend. A reset spring is sleeved on the guide rods. The lock core mounting seat is also provided with a guiding hole groove with a limiting function corresponding to the advancing position of the guide rods. Thus, both the main push rod and the reset push rod are elastically reset by the reset spring; The dial head on the dial rod, during the elastic reset process, slides into the limiting port along the inclined surface to complete the mechanical reset of the dial rod; when the key is inserted and pushes the reset push rod to move and vacate the limiting port, the dial rod is in a rotatable state. In this state, the motor can drive the chuck to rotate through the dial rod to complete unlocking; when the key is rotated in the reverse direction, the lock pin resets and slides out of the telescopic hole channel and is limited within the lock shell to complete locking. Then, when the key is pulled out, the reset push rod immediately resets, and the dial rod slides back into the limiting port again; The contact part of the key includes a contact point at the front and a key metal contact housing used as a ground wire. The contact point is a single-wire half-duplex communication time-division multiplexing contact that combines the key power line and the key communication line. At a position opposite to the key, at the front of the lock core, that is, at the front end of the lock core mounting seat, there is an annular power-on communication contact that matches the contact point on the key and a grounding outer ring used for grounding; when the key is inserted into the lock core, the contact point is in contact with the power-on communication contact, and the key metal contact housing is in contact with the grounding outer ring; A circle of anti-detachment grooves is provided at the edge of the key end. One end of the main push rod in contact with the key extends into the front end of the lock core mounting seat in contact with the key and is in contact with the inner wall of the grounding inner ring at the front end of the lock core mounting seat. Between the lock core mounting seat and the lock shell, a positioning groove is provided on the lock shell, and a through hole is provided on the wall of the grounding outer ring where the main push rod is in contact with the grounding outer ring. An anti-detachment part is embedded. Both ends of the anti-detachment part are arc-shaped protrusions. The two ends of the anti-detachment part respectively match the anti-detachment groove and the positioning groove.

2. The passive intelligent lock according to claim 1, characterized in that, Between the lock shell and the lock core, a spring pin type position sensor is also provided. When the lock core is at the initial position of just being locked, at the place where the spring pin contacts the lock shell, there is an insulating area on the lock shell.

3. The passive intelligent lock according to claim 2, characterized in that, The lower end of the spring pin type position sensor corresponds to the position of the motor, and the upper end passes through the lock core cover plate and contacts the lock shell.

Images