CN218912549U - Passive electronic lockset - Google Patents

Abstract

The utility model discloses a passive electronic lockset, which comprises a lockset body, a lock cylinder, a circuit board, an electromagnet, a conductive shaft, a movable pin and a reset spring, wherein the lock cylinder is arranged on the lock body; the lock body is provided with a movable cavity for the lock core to be matched in a rotating way, and the inner wall of the movable cavity is provided with a rotation stopping groove; the lock cylinder with the mounting cavity is made of conductive materials, the front end face of the lock cylinder is provided with a plug groove, and the plug groove is provided with a plug hole; the circuit board and the electromagnet are arranged in the mounting cavity and are electrically connected; the conductive shaft is arranged in the plug hole and is insulated from the lock cylinder, and the conductive shaft is electrically connected with one electrode of the circuit board; the other electrode of the circuit board is electrically connected with the inner wall of the mounting cavity; the movable pin is embedded on the peripheral surface of the lock cylinder, and the outer end of the movable pin is abutted against the inner wall of the movable cavity under the action of the reset spring and is in movable fit with the rotation stopping groove; the iron core of the electromagnet is arranged opposite to the inner end of the movable pin and is used for limiting the movable pin. The utility model can further compress the internal space of the lockset, thereby realizing smaller lockset volume and meeting the application requirements of specific clients.

Description

Passive electronic lockset

Technical Field

The utility model relates to the technical field of electronic locks, in particular to a passive electronic lock.

Background

Along with the development of society, the development of locks is diversified. The mechanical lockset has potential safety hazards of easy loss and duplication of physical keys, and the electronic lockset adopts an electronic key mode, so that the potential safety hazard of the mechanical lockset is solved. However, if the key is leaked, the electronic lock still has the risk of being stolen, and meanwhile, the electronic lock needs a battery or a connecting wire to supply power: the former needs to replace the battery periodically, and has the defects of large product volume, heavy weight, high cost and the like of the electronic lockset; the latter is not available when the power is off, and the user experience is poor. For this reason, passive locks are gradually developed in the industry.

The passive lock comprises a lock body and a key, wherein the lock body is not provided with a power supply, and the power is supplied when the matched key is inserted so as to drive an electromagnetic structure inside the lock body to open and close. The prior passive lockset mainly comprises a lock shell, a lock core and an electromagnetic structure, wherein the lock core and the electromagnetic structure are arranged inside the lock shell, unlocking and locking are realized through on-off of the electromagnetic structure, so that the electromagnetic structure is generally arranged with the lock core to realize the side surface acting on the lock core to realize the limiting and releasing limiting functions, and furthermore, a group of limiting structures are arranged between the electromagnetic structure and the lock core to play a role in stopping rotation so as to improve the safety performance of the lockset, and the electromagnetic structure does not directly act on the lock core any more, but limits the limiting structure, so that the limiting structure keeps the locking state of the lock core and cannot unlock. According to the above, the lock core, the electromagnetic structure and even the limit structure of the existing passive lock are arranged in the lock body in parallel, so that a larger containing cavity needs to be arranged in the lock body, the volume of the lock is larger, the volume of the lock is required to be smaller and smaller in occasions such as a locker, and the existing passive lock cannot meet the requirements.

Disclosure of Invention

The utility model aims to provide a passive electronic lock, and provides a brand-new structural design, which can further compress the internal space of the lock, further realize smaller lock volume and meet the application requirements of specific clients.

In order to achieve the above object, the solution of the present utility model is:

a passive electronic lock comprises a lock body, a lock core, a circuit board, an electromagnet, a conductive shaft, a movable pin and a reset spring; the lock body is provided with a movable cavity for the lock core to be in running fit, and the inner wall of the movable cavity is provided with a rotation stopping groove; the lock cylinder is made of conductive materials, the front end face of the lock cylinder is provided with a plug groove matched with an electronic key, and a plug hole is formed in the plug groove; an installation cavity is arranged between the front end and the rear end of the lock cylinder; the circuit board and the electromagnet are arranged in the mounting cavity, and the electromagnet is electrically connected with the circuit board; the conductive shaft is arranged in the plug hole and is insulated from the lock cylinder, and the conductive shaft is electrically connected with one electrode of the circuit board; the other electrode of the circuit board is electrically connected with the inner wall of the mounting cavity; the movable pin is embedded on the peripheral surface of the lock cylinder, and the outer end of the movable pin is abutted against the inner wall of the movable cavity under the action of the reset spring and is in movable fit with the rotation stopping groove; the iron core of the electromagnet is arranged opposite to the inner end of the movable pin and used for limiting the movable pin.

The passive electronic lockset further comprises a guide block arranged in the lock cylinder; the guide block is provided with a guide channel arranged along the radial direction of the lock cylinder, and the inner end peripheral surface of the guide channel is provided with a first perforation for the iron core of the electromagnet to penetrate through; the return spring and the movable pin are sequentially matched in the guide channel.

The lock body comprises a lock shell and an end cover; the movable cavity is arranged in the lock shell and is an opening at the front end; the lock cylinder is arranged in the movable cavity and is limited by an end cover arranged at the front end opening of the movable cavity; the end cover is provided with a first through hole for the front end of the lock cylinder to penetrate out.

The circuit board is arranged along the radial plane of the lock cylinder and is arranged on the end face of the electromagnet; the two electrodes of the circuit board are arranged on the plane facing the conductive shaft, and the other electrode of the circuit board is provided with a spring needle which is elastically matched with the end wall of the mounting cavity.

The passive electronic lockset further comprises a lock tongue; the rear end of the lock core penetrates out of the rear end of the movable cavity, and the lock tongue is assembled on the peripheral surface or the rear end of the lock core, so that different action lengths are provided between the lock tongue and the lock body.

The lock cylinder comprises a first core body and a second core body, the first core body is the front end of the lock cylinder, the second core body is the rear end of the lock cylinder, the first core body and the second core body are detachably assembled to realize coaxial rotation, and the mounting cavity is formed between the first core body and the second core body; the inserting grooves are formed in the end face, facing away from the second core, of the first core.

The iron core of the electromagnet is parallel to the axial direction of the lock cylinder, and the iron core faces the front end of the lock cylinder.

The passive electronic lockset further comprises a first steel ball arranged on the lock cylinder; the front end peripheral surface of the lock core is provided with a movable hole for the movable fit of the first steel ball, and the inner wall of the movable cavity is provided with a relief groove with the same height as the movable hole at the locking and unlocking positions of the lockset.

The passive electronic lockset further comprises an insulating sleeve; the insulating sleeve is arranged on the side wall of the plug hole.

The front end peripheral surface of the lock body is provided with a circle of mounting flange, and the rear end peripheral surface of the lock body is provided with external threads.

After the technical scheme is adopted, the utility model has the following technical effects:

(1) the lock cylinder is made of conductive materials, the conductive shaft is arranged in the plug hole of the lock cylinder, the conductive shaft and the lock cylinder are insulated and are directly and electrically connected to one electrode of the circuit board, the other electrode of the circuit board is directly and electrically connected with the inner wall of the mounting cavity, and after the electronic key is inserted into the plug groove, the electronic key can be electrically connected to the two electrodes of the circuit board through the conductive shaft and the lock cylinder respectively, so that the conduction of a power supply circuit of the lock is realized;

(2) according to the utility model, the electric wires are not arranged any more, so that the fittings of the lockset are reduced, the requirement of the interior for the installation space is reduced, the layout of the fittings is not interfered by the electric wires, meanwhile, the circuit board and the electromagnet are directly arranged in the lock cylinder, the interior space of the lock cylinder is reasonably utilized for assembly, the circuit board and the electromagnet are in a shell relation with the lock cylinder and the lockset body, the layout of the fittings is designed to be more compact, the volume of the lockset can be further compressed, and the user requirement of small-volume products is met.

Drawings

FIG. 1 is a perspective view of a first embodiment of the present utility model;

FIG. 2 is an exploded view of a first embodiment of the present utility model;

FIG. 3 is a front view of a first embodiment of the present utility model;

FIG. 4 is a top view of a first embodiment of the present utility model;

FIG. 5 isbase:Sub>A diagram illustratingbase:Sub>A locked state (direction A-A in FIG. 3) according tobase:Sub>A first embodiment of the present utility model;

FIG. 6 is a diagram showing a second locked state (direction B-B in FIG. 4) according to the first embodiment of the present utility model;

FIG. 7 isbase:Sub>A schematic diagram of an unlocking state (direction A-A in FIG. 3) according tobase:Sub>A first embodiment of the present utility model;

FIG. 8 is a second schematic diagram of an unlocked state (direction C-C in FIG. 7) according to the first embodiment of the present utility model;

FIG. 9 is a schematic diagram illustrating a plugging state between the first embodiment of the present utility model and an electronic key;

fig. 10 is a functional schematic diagram of a first steel ball according to a first embodiment of the present utility model;

FIG. 11 is a cross-sectional view taken along the direction D-D in FIG. 10;

FIG. 12 is a perspective view of a second embodiment of the present utility model;

FIG. 13 is an exploded view of a second embodiment of the present utility model;

FIG. 14 is a schematic view showing the cooperation between a lock housing and a retainer ring according to a second embodiment of the present utility model;

FIG. 15 is a diagram showing a locked state of a second embodiment of the present utility model;

FIG. 16 is a schematic view of an unlocked state of a second embodiment of the present utility model;

fig. 17 is a functional schematic diagram of a second steel ball according to a second embodiment of the present utility model;

fig. 18 is a perspective view of a third embodiment of the present utility model;

FIG. 19 is an exploded view of a third embodiment of the present utility model;

FIG. 20 is a cross-sectional view of a third embodiment of the present utility model;

reference numerals illustrate:

1- - -a lock body; 11-a lock shell; 111—an active cavity;

112—a yield slot; 113—a mounting flange; 114- -external threads;

115—a rotation stopping groove; 116- -a rotation-stopping recess; 117-a second through hole;

118—a gear slot; 12- - -end cap; 121—a first via;

13-limit nails; 2- - -a lock core; 21- - -a first core;

211- -a plug-in slot; 212- -plug holes; 213—a movable aperture;

214—a connecting column; 22-a second core; 221- -a mounting cavity;

222- -caulking groove; 223- -screw; 224- -elongated holes;

225- -an active slot; 226- -mounting posts; 227—a rotation stop plane;

23- - -a mounting plate; 231-second perforations; 232- -connecting holes;

3- - -a circuit board; 4- - -an electromagnet; 41- - -an iron core;

5- - -a conductive shaft; 6- - -a bolt; 7- - -a first steel ball;

8- -an electronic key; 81- - -a ball groove; 82- - -a metal plug;

83— a spring contact; 9- - -an insulating sleeve; 10- - -a movable pin;

20- - -a return spring; 30- - -a guide block; 301—a guide channel;

302- -a first perforation; 40-spring needle; 50-nut;

60- -check ring; 601- -an arcuate slot; 602- -a limit groove;

603—a rotation stopping protrusion; 70- - -a second steel ball; 80- - -a gear spring;

90-shrapnel; 100- -combination screw; 200- -stop collar.

Detailed Description

In order to further explain the technical scheme of the utility model, the utility model is explained in detail by specific examples.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Accordingly, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in place when the inventive product is used, or the orientation or positional relationship conventionally understood by those skilled in the art, is merely for convenience in describing the embodiments of the present utility model, and is not intended to indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 17, the utility model discloses a passive electronic lock, which comprises a lock body 1, a lock cylinder 2, a circuit board 3, an electromagnet 4 and a conductive shaft 5;

the lock body 1 is provided with a movable cavity 111 for the lock cylinder 2 to be in running fit, and a rotation stopping mechanism of the lock is arranged between the lock cylinder 2 and the lock body 1;

the lock cylinder 2 is made of conductive materials, a plug groove 211 matched with the electronic key 8 is arranged on the front end surface of the lock cylinder, and a plug hole 212 is arranged in the plug groove 211; a mounting cavity 221 is arranged between the front end and the rear end of the lock cylinder 2;

the circuit board 3 and the electromagnet 4 are arranged in the mounting cavity 221, and the electromagnet 4 is electrically connected with the circuit board 3;

the conductive shaft 5 is arranged in the plug hole 212 and is insulated from the lock cylinder 2, and the conductive shaft 5 is electrically connected with one electrode of the circuit board 3; the other electrode of the circuit board 3 is electrically connected with the inner wall of the mounting cavity 221;

the iron core 41 of the electromagnet 4 is arranged opposite to the rotation stopping mechanism; the iron core 41 acts on the rotation stopping mechanism to keep locking the lock cylinder 2 when the electromagnet 4 is powered off, and the iron core 41 is separated from the rotation stopping mechanism to release locking of the lock cylinder 2 when the electromagnet 4 is powered on.

Through the scheme, the lock cylinder 2 is made of the conductive material, the conductive shaft 5 is arranged in the plug hole 212 of the lock cylinder 2, the conductive shaft 5 and the lock cylinder 2 are insulated and are directly and electrically connected to one electrode of the circuit board 3, the other electrode of the circuit board 3 is directly and electrically connected with the inner wall of the mounting cavity 221, and after the electronic key 8 is inserted into the plug groove 211, the two electrodes of the circuit board 3 can be electrically connected through the conductive shaft 5 and the lock cylinder 2 respectively, so that the conduction of a lockset power supply line is realized; according to the utility model, the electric wires are not arranged any more, so that the fittings of the lockset are reduced, the requirements of the interior for the installation space are reduced, the layout of the fittings is not interfered by the electric wires, meanwhile, the circuit board 3 and the electromagnet 4 are directly arranged in the lock cylinder 2, the interior space of the lock cylinder 2 is reasonably utilized for assembly, the circuit board 3 and the electromagnet 4 are in a shell relation with the lock cylinder 2 and the lockset body 1, the layout of the fittings is designed to be more compact, the volume of the lockset can be further compressed, and the user requirements of small-volume products are met.

The following illustrates specific embodiments of the utility model.

In some embodiments of the passive electronic lock described above, the lock further comprises a locking bolt 6; the rear end of the lock cylinder 2 passes through the rear end of the movable cavity 111, and the lock tongue 6 is assembled at the rear end of the lock cylinder 2.

In some embodiments of the passive electronic lock, the lock cylinder 2 includes a first core 21 and a second core 22, the first core 21 is a front end of the lock cylinder 2, the second core 22 is a rear end of the lock cylinder 2, and the first core 21 and the second core 22 are detachably assembled to realize coaxial rotation, so as to form the installation cavity 221 therebetween; the insertion groove 211 is disposed on an end surface of the first core 21 facing away from the second core 22, and an end portion of the second core 22 facing away from the first core 21 penetrates out of the rear end of the movable cavity 111 for assembling the locking bolt 6. The lock core 2 is designed into the first core 21 and the second core 22 in a split mode, the circuit board 3 and the electromagnet 4 can be conveniently installed, assembly difficulty is reduced, efficiency is improved, and meanwhile the first core 21 and the second core 22 are convenient to process.

In some embodiments of the passive electronic lock, the core 41 of the electromagnet 4 is parallel to the axial direction of the lock cylinder 2, and the core 41 faces the front end of the lock cylinder 2. After the lock is installed at a preset installation position, if someone intends to use a magnet to forcibly unlock, the iron core 41 can only extend towards the front end direction of the lock core 2 after being attracted by the magnet, namely, the moving direction of the iron core 41 after being attracted by the magnet is consistent with the moving direction of the iron core 41 after power failure, and the lock is in the locking direction, so that the anti-theft performance of the lock is improved.

In some embodiments of the passive electronic lock described above, the lock further comprises a first steel ball 7 provided on the lock cylinder 2; the front end peripheral surface of the lock core 2 is provided with a movable hole 213 for the movable fit of the first steel ball 7, and the inner wall of the movable cavity 111 is provided with a relief groove 112 at the same height as the movable hole 213 at the locking and unlocking positions of the lockset. Referring to fig. 9, a ball groove 81 corresponding to the movable hole 213 may be provided on the electronic key 8, so as to prevent the abnormal phenomenon of the switch lock caused by the bad contact with the lock caused by the pulling-out of the electronic key 8 during the use, and the working principle of the switch lock may be as follows, which is described in the first embodiment of the first steel ball 7.

In some embodiments of the passive electronic lock described above, further comprising an insulating sleeve 9; the insulating bush 9 is provided at the side wall of the plug hole 212. The insulating sleeve 9 prevents the conductive shaft 5 from contacting the inner wall of the plug hole 212, so that insulation between the conductive shaft 5 and the lock cylinder 2 is realized.

In some embodiments of the passive electronic lock, a front end peripheral surface of the lock body 1 is provided with a ring of mounting flange 113, and a rear end peripheral surface of the lock body 1 is provided with external threads 114. The external threads 114 can be used to mount the lock body 1 (i.e., the whole lock) at a predetermined mounting position (e.g., a door panel, a cabinet door, a drawer panel, etc.), and the mounting flange 113 can limit the mounting depth of the lock body 1.

Two specific embodiments of the present utility model are shown below, depending on the rotation stop mechanism.

Referring to fig. 1 to 11, a first embodiment of the present utility model is shown.

The rotation stopping mechanism comprises a movable pin 10 and a return spring 20 which are arranged on the peripheral surface of the lock cylinder 2, and a rotation stopping groove 115 which is arranged on the inner wall of the movable cavity 111; the movable pin 10 is embedded on the peripheral surface of the lock cylinder 2, and the outer end of the movable pin is abutted against the inner wall of the movable cavity 111 under the action of the return spring 20 and is in movable fit with the rotation stopping groove 115; the iron core 41 of the electromagnet 4 is arranged opposite to the inner end of the movable pin 10: when the iron core 41 stretches out, the movable pin 10 is limited to lock the lock cylinder 2, and when the iron core 41 retracts, the moving space of the movable pin 10 is reserved to unlock the lock cylinder 2. The movable pin 10 and the rotation stopping groove 115 are matched, so that not only can the lock of the lock cylinder 2 be realized, but also the rotation process of the lock cylinder 2 can be provided with a gear sense, and an operator can more obviously feel that the lock is locked or unlocked in place.

Further, the utility model also comprises a guide block 30 arranged in the lock cylinder 2; the guide block 30 has a guide passage 301 provided along the radial direction of the key cylinder 2, and a first through hole 302 through which the core 41 of the power supply magnet 4 is inserted is provided on the inner end peripheral surface of the guide passage 301; the return spring 20 and the movable pin 10 are fitted in the guide passage 301 in this order. When the iron core 41 is inserted into the inner end of the guide channel 301 through the first through hole 302, the movable pin 10 can be prevented from retracting, and the lock cylinder 2 can not be rotated; when the iron core 41 is out of the guide channel 301, the movable pin 10 can compress the return spring 20 and retract, so that the lock cylinder 2 can be rotated and the movable pin 10 can compress the return spring 20 to retract into the guide channel 301.

The second core 22 is provided with a caulking groove 222 on the front end surface thereof for fitting the guide block 30.

The lock body 1 comprises a lock shell 11 and an end cover 12; the movable cavity 111 is disposed in the lock case 11, and the movable cavity 111 is an opening at the front end; the lock cylinder 2 is arranged in the movable cavity 111 and is limited by an end cover 12 arranged at the front end opening of the movable cavity 111; the end cap 12 is provided with a first through hole 121 through which the front end of the lock cylinder 2 passes.

The circuit board 3 is arranged along the radial plane of the lock cylinder 2, namely, the circuit board 3 is arranged on the end face of the electromagnet 4, so that the radius of the lock cylinder 2 can be smaller; the two electrodes of the circuit board 3 are arranged on the plane facing the conductive shaft 5, and the spring needle 40 is arranged on the other electrode of the circuit board 3, and the spring needle 40 is elastically matched on the end wall of the mounting cavity 221, so that the electric connection between the circuit board 3 and the lock cylinder 2 can be realized without wires.

The rear end of the second core 22 is provided with a screw 223, and the lock tongue 6 is sleeved on the screw 223 and is locked by a nut 50.

Referring to fig. 5 and 6, the locked state of the first embodiment is:

the iron core 41 of the electromagnet 4 is ejected by the spring of the electromagnet 4, and at the moment, the front end of the movable pin 10 is positioned in the rotation stopping groove 115 of the movable cavity 111; when the electronic key 8 is rotated and the first core 21 and the second core 22 are driven to synchronously rotate, the inner end of the movable pin 10 is blocked by the iron core 41 and cannot be extruded and retracted by the inner wall of the movable cavity 111, so that the lock core 2 is locked and cannot be unlocked.

Referring to fig. 7 and 8, the unlocking state of the second embodiment is:

the electronic key 8 is inserted, an unlocking instruction is sent to the circuit board 3 by the electronic key 8, the circuit board 3 controls the electromagnet 4 to work, the electromagnet 4 is electrified and sucks the iron core 41 back, and the iron core 41 does not block the inner end of the movable pin 10. At this time, the electronic key 8 is turned, the electronic key 8 drives the whole lock cylinder 2 to rotate, and the outer end of the movable pin 10 is extruded back into the guide channel 301 by the inner wall of the movable cavity 111 after being separated from the rotation stopping groove 115, so that retraction is realized, and unlocking is successful.

Referring to fig. 9 to 11, since the inner wall of the movable cavity 111 is provided with the relief groove 112 in both the locking and unlocking positions, the electronic key 8 is provided with the corresponding ball groove 81, and when the lock cylinder 2 is in the locked or unlocked state, the action of plugging the electronic key 8 will squeeze the first steel ball 7 into the relief groove 112; when the lock core 2 is in a state between locking and unlocking, the side wall of the lock body 1 can squeeze the first steel balls 7 into the ball grooves 81 of the electronic key 8, the electronic key 8 cannot be pulled out at this time, and only when the electronic key 8 is rotated to rotate to the locked or unlocked position with the lock core 2, the electronic key 8 can be pulled out. Further, the electronic key 8 has a metal plug 82 that mates with the insertion groove 211, and an elastic contact 83 provided in the metal plug 82, the elastic contact 83 being insulated from the metal plug 82; the metal plug 82 is inserted into the insertion groove 211 so that the elastic contact 83 abuts against the end face of the conductive shaft 4; the metal plug 82 and the elastic contact 83 are electrically connected to two electrodes of the built-in battery of the electronic key 8, respectively, and the voltage of the built-in battery is not more than 3.6V at the highest.

Referring to fig. 12 to 17, a second embodiment of the present utility model is shown.

The rotation stopping mechanism comprises a retainer ring 60 arranged between the first core 21 and the second core 22, wherein the retainer ring 60 is circumferentially and limitedly matched with the side wall of the movable cavity 111, and a special-shaped hole consisting of an arc-shaped groove 601 and a limiting groove 602 is formed in the retainer ring; the lock cylinder 2 further comprises a mounting plate 23 for positioning and mounting the circuit board 3 and the electromagnet 4; the mounting cavity 221 is arranged in the second core 22, the mounting plate 23 covers the opening of the mounting cavity 221, and a second perforation 231 and a connecting hole 232 for the iron core 41 to penetrate out are arranged on the mounting plate; the first core 21 is provided with a connecting column 214 facing the second core 22, the connecting column 214 is arranged in the arc-shaped groove 601 in a penetrating way and is inserted into the connecting hole 232 so as to realize coaxial rotation of the first core 21 and the second core 22, and when the first core 21 and the second core 22 synchronously rotate, the arc-shaped groove 601 can realize abdication when the connecting column 214 rotates, so that rotation of the whole lock cylinder 2 is not interfered; when the iron core 41 extends out, the second through hole 231 can be penetrated and matched in the limiting groove 602, and at this time, the lock cylinder 2 is limited by the matching of the iron core 41 and the limiting groove 602 and cannot rotate.

Further, at least one rotation stopping protrusion 603 is disposed on the circumferential surface of the retainer ring 60, and a rotation stopping recess 116 in which the rotation stopping protrusion 603 is embedded is disposed on the inner wall of the movable cavity 111, so as to realize circumferential limitation between the retainer ring 60 and the lock body 1, thereby limiting rotation of the lock cylinder 2 when the lock cylinder 2 is inserted into the limiting groove 602 of the retainer ring 60, and further realizing locking.

The lock body 1 comprises a lock shell 11 and a limit nail 13; the movable cavity 111 is disposed in the lock case 11, and the movable cavity 111 is an opening at the rear end, and a second through hole 117 is disposed at the front end of the movable cavity for the front end of the lock cylinder 2 to pass through; the peripheral surface of the second core 22 is provided with elongated holes 224 extending along the circumferential direction of the second core 22; the lock core 2 is matched with the rear limit nail 13 of the movable cavity 111, and the peripheral surface of the lock shell 11 penetrates through and is matched with the long strip hole 224, so that the axial limit of the second core 22 is realized, the whole lock core 2 is limited in the lock shell 11, and the installation of the lock core 2 is realized.

The second embodiment further includes a second steel ball 70 and a gear spring 80; the second core 22 is provided with a movable groove 225 on the peripheral surface, and the inner wall of the movable cavity 111 is provided with a gear groove 118 with the same height as the movable groove 225; the gear spring 80 and the second steel ball 70 are sequentially matched in the movable groove 225, and the second steel ball 70 is abutted against the inner wall of the movable cavity 111 under the action of the gear spring 80 and is movably matched with the gear groove 118. The second steel ball 70 and the gear spring 80 can enable the rotation process of the lock cylinder 2 to have gear feeling, and an operator can more obviously feel locking or unlocking in place.

The circuit board 3 is arranged along the axial plane of the lock cylinder 2, namely, the circuit board 3 is arranged on the side surface of the electromagnet 4, so that the length of the lock cylinder 2 can be smaller; two electrodes of the circuit board 3 are respectively arranged on the edge and the plane opposite to the electromagnet 4, and an elastic sheet 90 made of conductive material is arranged on the other electrode of the circuit board 3, and the elastic sheet 90 is elastically matched on the side wall of the mounting cavity 221, so that the electric connection between the circuit board 3 and the lock cylinder 2 can be realized without wires.

The rear end of the second core 22 is provided with a mounting post 226, a screw hole is provided in the mounting post 226, and the lock tongue 6 is sleeved on the mounting post 226 and locked by the combination screw 100.

Referring to fig. 15, the locked state of the second embodiment is:

the iron core 41 of the electromagnet 4 is ejected by the spring of the electromagnet 4, and the iron core 41 passes through the mounting plate 23 and is matched in the limit groove 602 of the retainer ring 60; when the electronic key 8 is rotated and the first core 21 and the second core 22 are driven to rotate synchronously, the lock core 2 cannot be rotated and the lock cannot be unlocked because the retainer ring 60 and the lock body 1 are limited in the circumferential direction, and the limiting groove 602 limits the iron core 41.

Referring to fig. 16, the unlocking state of the second embodiment is:

the electronic key 8 is inserted, an unlocking instruction is sent to the circuit board 3 by the electronic key 8, the circuit board 3 controls the electromagnet 4 to work, the electromagnet 4 is electrified and sucks the iron core 41 back, and the iron core 41 is separated from the check ring 60 and is not limited by the check ring 60 any more. At this time, the electronic key 8 is turned, and the electronic key 8 drives the whole lock cylinder 2 to rotate, so that unlocking is successful.

The second embodiment also has the function of preventing the electronic key 8 from being inserted and pulled out during use, and the structure and principle are the same as those of the first embodiment, and will not be described here again.

Referring to fig. 18 to 20, a third embodiment of the present utility model is shown.

The third embodiment is the same as the first embodiment in most of the structures and principles, and the above-described rotation stopping mechanism is also provided with a movable pin 10 and a return spring 20 provided on the peripheral surface of the key cylinder 2, and a guide block 30 for mounting the movable pin 10 and the return spring 20 is also provided.

The third embodiment is most different from the first embodiment in that:

the locking bolt 6 in the first embodiment is mounted on the screw 223 at the rear end of the second core 22, while in the third embodiment, the locking bolt 6 is mounted on the circumferential surface of the second core 22 and is limited by the limiting sleeve 200 sleeved at the end of the second core 22, and the limiting sleeve 200 is locked at the end of the second core 22 by the combination screw 100.

Further, the peripheral surface of the second core 22 is provided with a rotation stopping plane 227, and the lock tongue 6 is sleeved on the rotation stopping plane 227 to realize circumferential limitation, so that the lock core 2 (i.e. the first core 21 and the second core 22) can drive the lock tongue 6 to synchronously rotate when rotating. When the second core 22 is processed, the rotation stopping plane 227 can be processed into different lengths according to the requirements of customers, so that different action lengths from the lock tongue 6 to the lock body 1 can be realized, and meanwhile, the lock tongue 6 is subjected to limit installation by matching with the limit sleeve 200 with different lengths.

In addition, the thickness of the mounting flange 113 of the first embodiment is different from that of the third embodiment, which determines the degree to which the lock is mounted at a predetermined mounting position (e.g., a door panel) and also affects the length of the action between the lock body 1 and the lock cylinder 2.

The above examples and drawings are not intended to limit the form or form of the present utility model, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.

Claims (10)

1. A passive electronic lock, characterized in that:

the lock comprises a lock body, a lock core, a circuit board, an electromagnet, a conductive shaft, a movable pin and a reset spring;

the lock body is provided with a movable cavity for the lock core to be in running fit, and the inner wall of the movable cavity is provided with a rotation stopping groove;

the lock cylinder is made of conductive materials, the front end face of the lock cylinder is provided with a plug groove matched with an electronic key, and a plug hole is formed in the plug groove; an installation cavity is arranged between the front end and the rear end of the lock cylinder;

the circuit board and the electromagnet are arranged in the mounting cavity, and the electromagnet is electrically connected with the circuit board;

the conductive shaft is arranged in the plug hole and is insulated from the lock cylinder, and the conductive shaft is electrically connected with one electrode of the circuit board; the other electrode of the circuit board is electrically connected with the inner wall of the mounting cavity;

the movable pin is embedded on the peripheral surface of the lock cylinder, and the outer end of the movable pin is abutted against the inner wall of the movable cavity under the action of the reset spring and is in movable fit with the rotation stopping groove;

the iron core of the electromagnet is arranged opposite to the inner end of the movable pin and used for limiting the movable pin.

2. The passive electronic lockset according to claim 1, wherein:

the lock further comprises a guide block arranged in the lock cylinder; the guide block is provided with a guide channel arranged along the radial direction of the lock cylinder, and the inner end peripheral surface of the guide channel is provided with a first perforation for the iron core of the electromagnet to penetrate through; the return spring and the movable pin are sequentially matched in the guide channel.

3. The passive electronic lockset according to claim 1, wherein:

the lock body comprises a lock shell and an end cover; the movable cavity is arranged in the lock shell and is an opening at the front end; the lock cylinder is arranged in the movable cavity and is limited by an end cover arranged at the front end opening of the movable cavity; the end cover is provided with a first through hole for the front end of the lock cylinder to penetrate out.

4. The passive electronic lockset according to claim 1, wherein:

the circuit board is arranged along the radial plane of the lock cylinder and is arranged on the end face of the electromagnet; the two electrodes of the circuit board are arranged on the plane facing the conductive shaft, and the other electrode of the circuit board is provided with a spring needle which is elastically matched with the end wall of the mounting cavity.

5. The passive electronic lockset according to claim 1, wherein:

the lock also comprises a lock tongue; the rear end of the lock cylinder penetrates out of the rear end of the movable cavity, and the lock tongue is assembled on the peripheral surface or the rear end of the lock cylinder.

6. The passive electronic lockset according to claim 1, wherein:

the lock cylinder comprises a first core body and a second core body, the first core body is the front end of the lock cylinder, the second core body is the rear end of the lock cylinder, the first core body and the second core body are detachably assembled to realize coaxial rotation, and the mounting cavity is formed between the first core body and the second core body; the inserting grooves are formed in the end face, facing away from the second core, of the first core.

7. The passive electronic lockset according to claim 1, wherein:

the iron core of the electromagnet is parallel to the axial direction of the lock cylinder, and the iron core faces the front end of the lock cylinder.

8. The passive electronic lockset according to claim 1, wherein:

the lock further comprises a first steel ball arranged on the lock cylinder; the front end peripheral surface of the lock core is provided with a movable hole for the movable fit of the first steel ball, and the inner wall of the movable cavity is provided with a relief groove with the same height as the movable hole at the locking and unlocking positions of the lockset.

9. The passive electronic lockset according to claim 1, wherein:

also comprises an insulating sleeve; the insulating sleeve is arranged on the side wall of the plug hole.

10. The passive electronic lockset according to claim 1, wherein:

the front end peripheral surface of the lock body is provided with a circle of mounting flange, and the rear end peripheral surface of the lock body is provided with external threads.

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