CN211647667U - Short circuit prevention electric lock - Google Patents

Abstract

The utility model discloses an electric lock for preventing short circuit; the lock comprises a lock body, a lock core, an adapter, a first electrode assembly and a second electrode assembly; the lock body is provided with a key matching port and an accommodating cavity arranged below the key matching port, and the lock cylinder is arranged in the accommodating cavity; the first electrode assembly and the second electrode assembly respectively comprise main electrode matching terminals, external electrodes connected with an external electric loop and an internal electrode arranged in the accommodating cavity, and the adaptor is fixedly connected with the rotation driving end of the lock cylinder; the adapter is driven by the lock cylinder to rotate, and the internal electrode controls the external electrode to be connected or disconnected with the main electrode matched terminal; when the lock core is in a locking position, the internal electrode is disconnected with the external electrode; when the lock core is in the unlocking position, the main electrode matching terminal, the internal electrode and the external electrode of the computer key are conducted. The utility model discloses simple structure, safe and reliable.

Description

Short circuit prevention electric lock

All as the field of technology

The utility model relates to a prevent mistake blocking device field, especially relate to a prevent short circuit electric lock.

All the above-mentioned background techniques

The microcomputer anti-misoperation locking device is usually arranged in a transformer substation and a power plant and mainly comprises an anti-misoperation system, a computer key and a matched anti-misoperation electric lock. In the prior art, in order to meet the requirements of five prevention (preventing mistaken opening and closing of a circuit breaker, preventing a disconnecting switch with load from being opened and closed, preventing a grounding wire from being hung and disconnected in a live state, preventing power transmission with the grounding wire from being transmitted, and preventing mistaken entering into a live interval), a five-prevention electric lock is usually installed in an electric error prevention system to force an operator to operate according to a set safe operation flow. An operator inserts a computer key into the five-prevention electric lockset, the computer key judges whether lockset information is matched or not, when the information is matched, unlocking operation can be carried out, and then the computer key judges whether current exists in primary equipment or not through an internal loop, so that the charged state of the primary equipment is judged, and whether next-step operation can be carried out or not is prompted.

In the application of preventing mistake in transformer substation, power station, prevent mistake electric lock is the electric tool to lock that has the key electrode cooperation terminal with the key electrode cooperation of computer key and the external electrode of being connected with external equipment, at the in-process of actual operation, produces following several problems easily:

1. an external electrode of an electric lock in the prior art is directly connected to a 110V/220V electric loop, an operator can be lapped with a key electrode matching terminal in the process of operating a computer key, the key electrode matching terminal of a common electric lock is directly connected with the external electrode, and potential safety hazards such as short circuit and the like are easily generated when the operation is improper;

2. under the condition of not using a computer key, the key electrode can be conducted with a short circuit matched with the terminal by adopting a lead, and misoperation can occur;

3. a key electrode matching terminal of a common electric lock is lapped with a key electrode contact point of a computer key to form a loop, and information conversion is carried out between the loop and a hardware circuit in the computer key, so that safety problems such as electric sparks generated on contact surfaces of the key electrode matching terminal and the computer key due to large current can be caused in the operation process;

4. the common electric lock only has an electrified state detection function and does not have a state feedback function of other information, and a computer key cannot read state information of the lock or equipment.

All kinds of practical novel contents

The utility model aims to solve the technical problem that a prevent short circuit electric lock, safe and reliable is provided.

In order to achieve the above object, the utility model adopts the following technical scheme:

a short circuit prevention electric lock comprises a lock body, a lock core, an adapter, a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly are respectively matched and connected with two main electrodes of a computer key; the lock body is provided with a key matching port and an accommodating cavity arranged below the key matching port, and the lock cylinder is arranged in the accommodating cavity; the first electrode assembly and the second electrode assembly respectively comprise a main electrode matching terminal and an external electrode connected with an external electric loop, the main electrode matching terminals of the first electrode assembly and the second electrode assembly are arranged around the key matching port in an axial symmetry manner, and the adaptor is fixedly connected with the rotation driving end of the lock cylinder;

the first electrode assembly and the second electrode assembly respectively comprise an internal electrode arranged in the accommodating cavity; the adapter is driven by the lock cylinder to rotate, and the internal electrodes of the first electrode assembly and the second electrode assembly control the conduction or disconnection of the external electrodes and the main electrode matched terminal; when the lock core is in a locking position, the internal electrode is disconnected with the external electrode; when the lock core is in the unlocking position, the main electrode matching terminal, the internal connection electrode and the external connection electrode are conducted.

The utility model provides an electric lock, under the shutting condition, connect external electrode and the main electrode cooperation terminal of external electric return circuit to be nonconducting, the effectual misoperation that prevents personnel and cause for short circuit main electrode cooperation terminal; compared with the technical scheme that the external electrode is directly connected with the main electrode matched terminal in the prior art, the technical scheme is safer, and the potential safety hazard of short circuit caused by improper operation in the prior art is reduced.

Specifically, an electrode mounting part is also arranged in the accommodating cavity; the electrode mounting piece is provided with the key matching opening, the main electrode matching terminals of the first electrode assembly and the second electrode assembly are mounted on the electrode mounting piece around the key matching opening, and the internal electrode is arranged on the electrode mounting piece in an axisymmetric manner.

Specifically, the adaptor is an insulating adaptor, the internal connection electrodes of the first electrode assembly and the second electrode assembly penetrate through the insulating adaptor, and the internal connection electrodes are connected with or disconnected from the external connection electrodes at the bottom of the insulating adaptor.

According to the electric lock provided by the specific technical scheme, the connection and disconnection between the internal connection electrode and the external connection electrode are carried out at the bottom of the insulating adapter piece, so that the abnormal unlocking event caused by the fact that the external connection electrodes of the two electrode assemblies are short-circuited manually can be further prevented.

Specifically, the first electrode assembly and the second electrode assembly further respectively comprise an inner electrode and outer electrode electric connection mechanism for connecting the inner electrode and the outer electrode; the internal and external electric connection mechanism comprises a first connection terminal and a second connection terminal, the first connection terminal is fixedly connected with the external electrode and is normally electrically connected, and the second connection terminal is fixedly arranged at the bottom of the insulating adapter; the insulation adapter is driven by the lock cylinder to rotate so as to drive the second connecting terminal to be connected with or disconnected from the first connecting terminal; when the unlocking position is realized, the second connecting terminal is conducted with the internal connecting electrode.

Specifically, the electrode mounting piece and the insulation adapter piece are fixedly connected and driven by the rotation of the lock cylinder to rotate; the internal electrode is fixedly mounted on the electrode mounting piece and is normally and electrically connected with the main electrode matching terminal, and the internal electrode is fixedly connected with the second connecting terminal and is normally and electrically connected with the second connecting terminal;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal electrode is fixedly arranged on the electrode mounting piece and is normally and electrically connected with the main electrode matching terminal; the internal connection electrode is normally electrically connected with the second connection terminal;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal electrode is fixedly arranged on the electrode mounting piece and is normally and electrically connected with the main electrode matching terminal; under the rotation drive of the lock cylinder, the insulating adapter drives the second connecting terminal to be connected with or disconnected from the internal connecting electrode;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal connection electrode is fixedly connected with the second connecting terminal and is in normally-on electrical connection with the second connecting terminal; the internal electrode is driven by the rotation of the lock cylinder to rotate, and the internal electrode is normally electrically connected with the main electrode matching terminal;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal connection electrode is fixedly connected with the second connecting terminal and is in normally-on electrical connection with the second connecting terminal; under the rotation drive of the lock cylinder, the insulating adapter piece drives the inner electrode to be connected with or disconnected from the main electrode matched terminal.

The specific technical scheme comprises the position relation and the electrical connection relation among a plurality of internal electrodes, a computer key matching terminal and a second connecting terminal; in any case, it is ensured that the main electrode mating terminal and the external electrode are not conducted under the condition of not unlocking, and the main electrode mating terminal and the external electrode are conducted under the condition of unlocking.

Specifically, the first connection terminal comprises at least one group of conductive elastic sheets, and the end parts of the conductive elastic sheets protrude outwards to form protruding contacts; the first connection terminal is connected to or disconnected from the second connection terminal through the protruding contact.

The first connecting terminal is matched with the second connecting terminal to be connected or disconnected by adopting an electric connecting mechanism similar to an electrode electric brush, and the use process is simple and convenient and is safer.

The lock comprises an accommodating cavity, an adapter piece and a lock cylinder, wherein the accommodating cavity is arranged in the accommodating cavity and is used for accommodating the lock cylinder; a positioning groove is formed in the adaptor, a positioning mechanism comprising a positioning piece and an elastic piece is arranged in the positioning groove, and the positioning piece stretches and retracts in the positioning groove under the action of the elastic piece; and the corresponding mounting seat is provided with an unlocking position positioning matching mechanism and a locking position positioning matching mechanism which are matched with the positioning mechanism.

The arrangement of the positioning mechanism and the positioning matching mechanism can enable an operator to judge whether the lockset is unlocked or locked in place.

The lock comprises a lock cylinder, a mounting seat and a readable code sheet, wherein the readable code sheet is arranged above the lock cylinder and fixedly arranged on the mounting seat, and the readable code sheet is provided with an unlocking through hole which is aligned with an unlocking hole of the lock cylinder.

An operator inserts a computer key into the anti-short-circuit electric lock, the readable code sheet stores identity information of the anti-short-circuit electric lock, a reading head of the computer key reads the information, whether the information is matched or not is judged, and when the information is matched, unlocking operation is carried out. The readable code sheet may be provided integrally with the mount.

Preferably, the lock body further comprises a protective cover for opening and closing the key fitting hole.

The protective cover is mainly used for dust prevention and rain prevention, the protective cover can effectively reduce short-circuit events caused by rainwater entering the lock body, or the occurrence of poor contact between the key electrode matching terminal and the computer key due to overlarge external dust.

Preferably, the main electrode fitting terminals of the first electrode assembly and the second electrode assembly are formed of two or more key electrode fitting terminals electrically connected to each other, and each of the key electrode fitting terminals of the first electrode assembly and the second electrode assembly is mounted on the electrode mount around the key fitting opening.

In the technical scheme, each key electrode matching terminal is used as a physical connector for matching and contacting the short-circuit prevention electric lock and the computer key, each main electrode matching terminal is formed by connecting a plurality of key electrode matching terminals, correspondingly, the main electrode of the computer key is formed by a plurality of electrically connected key electrodes, and when the key electrode matching terminals are in matching and contacting with the key electrodes, the contact area of the key electrode matching terminals is increased, so that the key electrode matching terminals are beneficial to the average distribution of large current, and the safety problems such as safety electric sparks are reduced.

Preferably, each of the first electrode assembly and the second electrode assembly further comprises an auxiliary electrode mating terminal comprising a key electrode mating terminal; and the key electrode matching terminals of the auxiliary electrode matching terminals of the first electrode assembly and the second electrode assembly are arranged on the electrode mounting piece around the key matching opening and are connected with the output end of a state detection device.

This technical scheme's prevent short circuit electric lock still possesses the function of information feedback simultaneously, and according to the state detection device that auxiliary electrode cooperation terminal is connected, the computer key can acquire the state of corresponding equipment or tool to lock.

Further, the main electrode mating terminals of the first electrode assembly and the second electrode assembly are arranged around the rotation shaft of the lock cylinder in an axisymmetrical manner, and the auxiliary electrode mating terminals of the first electrode assembly and the second electrode assembly are arranged around the rotation shaft of the lock cylinder in an axisymmetrical manner; the key electrode mating terminals are arranged on the same circumference.

Further, the contact surface of each of the key electrode mating terminals is tangential to the circumference.

When the computer key inserts the back, the rotation of computer key can have certain assembly gap with preventing the short circuit electric lock, assembly gap can arouse that the key electrode of computer key has small dislocation at the key electrode cooperation terminal of preventing the short circuit electric lock along the circumferencial direction, this further technical scheme adopts along the setting of same circumference and this circumference coaxial with the axis of commentaries on classics core, even if there is small dislocation, also can guarantee the key electrode of computer key and prevent the key electrode cooperation terminal effective contact of short circuit electric lock, the stability of contact surface has been guaranteed, make the electricity connect very reliably.

Specifically, the contact face of each of the key electrode mating terminals projects beyond the inner annular wall surface of the electrode mount.

The contact surface of the key electrode of the corresponding computer key is of a concave structure, so that a certain positioning effect can be achieved, the stability of the contact surface is ensured, and the electric connection is very reliable.

Further, each of the key electrode mating terminals has elasticity in a direction perpendicular to the contact surface.

The main electrode matched terminal adopts a multi-contact and elastic design, so that the mutual influence of contact of all the contacts is very small, even if a certain contact is poor in contact, the electric connection between the main electrode matched terminal and the key electrode cannot be influenced, and the risk of poor contact between the electric lock and the computer key is reduced.

Further, a terminal spring is disposed on the back surface of the contact surface of each key electrode mating terminal.

In this further technical scheme, the elasticity of key electrode cooperation terminal can be increased in the setting of spring.

Each of the key electrode mating terminals includes a key electrode mating terminal of a main electrode mating terminal and a key electrode mating terminal of an auxiliary electrode mating terminal, and a contact surface of the key electrode mating terminal refers to a surface of the key electrode mating terminal which is in mating contact with a key electrode of a computer key.

The utility model discloses avoided external electrode lug connection key electrode cooperation terminal, safer in the use, the design is simple ingenious, has reduced the risk through preventing the improper switch-on external electric loop of short circuit electric lock to the multi-terminal design of key electrode cooperation terminal can also effectually reduce the production of electric spark in the use.

Description of the drawings

Fig. 1 is a first overall assembly view (protective cover closed state) of the short-circuit prevention electric lock according to a first embodiment of the present invention;

fig. 2 is a second overall assembly view (protective cover open state) of the short-circuit prevention electric lock according to the first embodiment of the present invention;

fig. 3 is an exploded view of an electric lock for preventing short circuit according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view (not including a protective cover) of an electric lock for preventing short circuit according to a first embodiment of the present invention;

fig. 5 is a schematic sectional structure view (excluding the protective cover) of the short-circuit prevention electric lock according to the first embodiment of the present invention;

fig. 6 is an assembly view of an internal electrode, a key electrode mating terminal and an electrode mounting member of the short-circuit prevention electric lock according to the first embodiment of the present invention;

FIG. 7 is an exploded view of FIG. 6;

fig. 8 is a schematic distribution diagram of key electrode mating terminals of an electrical lock for preventing short circuit according to an embodiment of the present invention;

fig. 9 is a top view of an assembly view of key electrode mating terminals and an electrode mounting member of an anti-short electric lock according to an embodiment of the present invention;

fig. 10 is a perspective view of an assembly view of key electrode mating terminals and an electrode mounting member of an electric short-circuit prevention lock according to an embodiment of the present invention;

fig. 11 is a schematic cross-sectional structure view of an assembled internal electrode and key electrode mating terminal of the electrical short-circuit prevention lock according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of a lock body (excluding a bottom cover) of an electric short-circuit prevention lock according to an embodiment of the present invention;

fig. 13 is an assembly view of the insulating adaptor and the second connection terminal of the short-circuit prevention electric lock according to the first embodiment of the present invention;

FIG. 14 is an exploded view of FIG. 13;

fig. 15 is a bottom view of the assembled insulation adaptor and the second connection terminal of the short-circuit prevention electric lock according to the first embodiment of the present invention;

fig. 16A is a B-B sectional view of the insulating adaptor of fig. 15 assembled with a second connection terminal;

fig. 16B is a cross-sectional view a-a of the insulating interposer of fig. 15 assembled with a second connection terminal;

fig. 17 is an assembly diagram of an external electrode and a first connection terminal of an anti-short-circuit electric lock according to an embodiment of the present invention;

fig. 18 is a perspective view of a first connection terminal of an electric lock for preventing short circuit according to an embodiment of the present invention;

fig. 19 is a first perspective view of a mounting seat of an electric lock for preventing short circuit according to a first embodiment of the present invention;

fig. 20 is a second perspective view of the mounting seat of the short-circuit prevention electric lock according to the first embodiment of the present invention;

fig. 21 is a first schematic diagram of an internal structure provided in the first embodiment of the present invention, which is illustrated in a non-unlocked state;

fig. 22 is a schematic diagram of an internal structure provided in the first embodiment of the present invention, which is illustrated in an unlocked state;

fig. 23 is a schematic view of an internal structure provided in an embodiment of the present invention, which is illustrated in a non-unlocked state;

fig. 24 is a schematic diagram of an internal structure provided in the second embodiment of the present invention, which is illustrated in an unlocked state;

fig. 25 is a first schematic sectional view of the internal structure of the short-circuit prevention electric lock according to the first, second and fourth embodiments of the present invention, which is illustrated in a non-unlocked state;

fig. 26 is a first schematic sectional view of the internal structure of the short-circuit prevention electric lock according to the first, second, and fourth embodiments of the present invention, which is shown in an unlocked state;

fig. 27 is a schematic circuit diagram of a latch state according to an embodiment of the present invention;

fig. 28 is a schematic circuit diagram of a latch state according to a second embodiment of the present invention;

fig. 29 is a schematic circuit diagram of a latch state according to the fourth embodiment of the present invention;

fig. 30 is a schematic circuit diagram of the unlocking state provided by the first, second and fourth embodiments of the present invention;

fig. 31 is a schematic structural diagram of a computer key used in cooperation with an anti-short-circuit electric lock according to a first embodiment of the present invention.

The reference numbers illustrate:

001-external electric loop outgoing line;

100-lock body, 110-shell, 120-bottom cover, 121-bottom plate, 130-protective cover, 131-protective cover mounting spring, 132-protective cover mounting gasket and 133-protective cover mounting screw;

200-lock core, 210-lock core tail shaft;

300-an installation seat, 301-an unlocking positioning groove, 302-a locking positioning groove and 303-a chip groove;

410-external electrode, 411-first connecting terminal, 4111-conductive elastic sheet, 413-screw, 414-fixing nut, 412-second connecting terminal, 420-internal electrode, 431-metal nut, 432-metal gasket, 433-lead, 434-main electrode matching terminal, 435-auxiliary electrode matching terminal and 436-electrode spring;

500-insulating adapter, 531-positioning pin, 532-positioning spring and 540-groove;

600-electrode mounting piece, 610-surface cover, 611-terminal mounting groove and 650-surface cover sealing plate;

700-readable code sheet;

002-computer key, 021-unlocking shaft assembly, 022-auxiliary electrode, 023-main electrode.

(specific embodiments) in all cases

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example one

The short-circuit prevention electric lock provided by the embodiment is used for being matched with a computer key and controlling the connection and disconnection of an external electric loop connected with the short-circuit prevention electric lock and a computer key loop of the computer key; generally, a computer key includes two main electrodes and a computer key loop connected to the main electrodes.

As shown in fig. 1 to 5, the short-circuit prevention electric lock includes a lock body 100, a lock cylinder 200, a mounting seat 300, an insulation adapter 500, an electrode mounting member 600, a readable code sheet 700, a first electrode assembly, and a second electrode assembly; the first electrode assembly and the second electrode assembly each include an external electrode 410 connected to the external electrical circuit, a main electrode mating terminal 434 in mating contact with the main electrode, and an internal electrode 420 for connecting and disconnecting the external electrode 410 and the main electrode mating terminal 434.

Referring to fig. 1, 2, 4 and 5, the lock body 100 includes a housing 110, a bottom cover 120 and a protective cover 130; the shell 110 and the bottom cover 120 are vertically closed, a containing cavity is formed inside the shell, and a key matching port is formed above the containing cavity and can be used for inserting a computer key; a protective cover 130 is provided over the key fitting opening to be connected to the housing 110 for dust and rain prevention.

As shown in fig. 2 and 12, a protective cover mounting groove is formed on one side of the top of the housing 110, and a circular protrusion is formed on the opposite side; the lower surface of the corresponding protecting cover 130 is provided with an installation pin which protrudes outwards and can be inserted into the protecting cover installation groove, and a circular groove which is matched with the circular protrusion; in the protective cover mounting groove, a protective cover mounting screw 133 passes through the protective cover mounting gasket 132 and is fixedly connected with a mounting pin of the protective cover 130; a limiting step is arranged in the protecting cover mounting groove, and the protecting cover mounting spring 131 is arranged between the protecting cover mounting gasket 132 and the limiting step and cannot be separated from the protecting cover mounting groove, so that the protecting cover pin is limited to be always in the protecting cover mounting groove.

When the protective cover 130 is closed, the circular groove on the protective cover 130 is matched with the circular protrusion on the housing 110, and the protective cover 130 can be fixed on the housing 110 and is not easy to move under the elastic force of the protective cover mounting spring 131; when the protective cover 130 needs to be opened, the protective cover 130 is lifted upwards, the protective cover mounting spring 131 is stressed by a spring, elastic deformation is formed upwards, so that the protective cover 130 has certain displacement upwards, and the protective cover 130 can rotate by taking the mounting pin as the shaft after the circular groove in the protective cover 130 is separated from the circular protrusion of the shell 110, so that the key matching opening is exposed, and an operator can insert a computer key to unlock.

In other embodiments, the protective cover 130 can be connected to the housing 110 by a hinge at one end and a snap connection at the other end, and the technical solutions for the purpose of opening and closing the protective cover conveniently should be the protection scope of the present invention.

With reference to fig. 3 to 6, the lock cylinder 200, the mounting base 300, the insulating adapter 500, the electrode mounting member 600, and the readable code sheet 700 are all disposed in the accommodating chamber; a bottom plate 121 is further disposed in the accommodating cavity and above the bottom cover 120 for fixedly mounting the mounting seat 300.

Referring to fig. 1 and 4, the external electrodes 410 of the first electrode assembly and the second electrode assembly are conductive screws, and are located at the left end and the right end of the lock body 100, the upper portions of the two external electrodes 410 are located in the accommodating cavity, the lower tails of the two external electrodes 410 pass through the bottom plate 121 and the bottom cover 120 and then are located outside the lock body 100, the portion of the external electrode 410 located outside the lock body 100 is generally connected to an external electrical loop outgoing line 001 by a nut (refer to fig. 1), and the two external electrodes 410 are fixedly connected to the lock body 100.

Referring to fig. 3-5, the lock cylinder 200 includes a lock cylinder housing, a rotary cylinder and a lock cylinder tail shaft 210; the lock cylinder 200 is arranged on the mounting seat 300, and the lock cylinder outer sleeve is fixedly connected with the mounting seat 300; the insulating adapter 500 is in a flat cylinder shape and is arranged below the mounting seat 300, the protruding part of the lower part of the mounting seat 300 is embedded into a groove 540 at the center of the insulating adapter 500 (see fig. 16A and fig. 20), the lock cylinder tail shaft 210 penetrates through the centers of the insulating adapter 500 and the mounting seat 300 and is fixedly connected with the rotating core inside the rotating core, the lock cylinder tail shaft 210 is fixedly connected with the insulating adapter 500, meanwhile, the lock cylinder tail shaft 210 can rotate relative to the mounting seat 300, and under the driving of the rotating core, the insulating adapter 500 rotates between a locking position and an unlocking position.

The rotation of lock core in fact refer to the rotation of the commentaries on classics core of lock core.

With reference to fig. 4 to 7 and 11, the electrode mounting member 600 is disposed at an opening above the accommodating cavity, the electrode mounting member 600 is provided with the key mating opening, the electrode mounting member 600 includes a surface cover 610, a surface cover sealing plate 650, the surface cover 610 and the surface cover sealing plate 650 are vertically mated, and the surface cover 610 is provided with a plurality of pairs of key electrode mating terminals axially symmetrically along an inner annular wall; the key electrode mating terminals are mounted on the inner annular wall of the face cover 610, and the end faces of the key electrode mating terminals serve as physical connectors for mating contact with a computer key.

The utility model discloses in, each main electrode cooperation terminal 434 all includes that the key electrode cooperation terminal of being connected by a plurality of electricity constitutes (this embodiment constitutes main electrode cooperation terminal 434 for the key electrode cooperation terminal of two electricity connections), corresponding, be used for with the utility model discloses a main electrode of preventing the computer key that the cooperation of main electrode cooperation terminal of short circuit electric lock used also is the key electrode of a plurality of connections and constitutes, for electric lock among the prior art, increased with the area of contact of main electrode cooperation terminal 434 with the main electrode, when the two contact is joined in marriage, help the average distribution of heavy current, reduced the potential safety hazard of electric spark.

Each auxiliary electrode mating terminal 435 includes a key electrode mating terminal, and two auxiliary electrode mating terminals are arranged on the surface cover 610 along the inner annular wall axis (also along the rotation axis of the lock cylinder); correspondingly, the computer key used for being matched with the short-circuit prevention electric lock is also provided with two auxiliary electrodes which are matched and contacted with the two auxiliary electrode matching terminals 435; the auxiliary electrode mating terminal 435 is used for feeding back status information to a computer key; for example, the auxiliary electrode mating terminal 435 is connected to a lock angle detection device for feeding back lock opening information to a computer key; further, the auxiliary electrode mating terminal 435 is connected to a temperature detecting device for feeding back temperature information detected by the temperature detecting device to the computer key.

Referring to fig. 8 to 10, each auxiliary electrode mating terminal of the present embodiment is an elastic member having elasticity along the vertical direction of the contact surface; preferably, the electrode spring 436 is disposed on the back of the contact surface of each key electrode mating terminal of the present embodiment, which is in mating contact with the key electrode of the computer key, so as to further increase the elasticity of the key electrode mating terminal and ensure good contact with the key electrode or the auxiliary electrode of the computer key. The contact surface of the key electrode matching terminal refers to the surface of the key electrode matching terminal which is matched and contacted with the key electrode of the computer key.

Preferably, the contact surface of each said key electrode mating terminal projects beyond the inner annular wall surface of said electrode mount. The contact surface of the key electrode of the corresponding computer key is of a concave structure, so that a certain positioning effect can be achieved, the stability of the contact surface is ensured, and the electric connection is very reliable.

Preferably, the main electrode mating terminals of the first electrode assembly and the second electrode assembly of the present embodiment are disposed around the rotation axis of the unlocking head in an axisymmetrical manner (also disposed along the rotation axis of the lock cylinder), the auxiliary electrode mating terminals of the first electrode assembly and the second electrode assembly are also disposed around the rotation axis of the unlocking head in an axisymmetrical manner, and the key electrode mating terminals are disposed along the same circumference; the contact surface of the computer key is matched and contacted with the computer key along the tangential direction of the circumference.

When a computer key is inserted, a certain assembly gap exists between the rotation of the computer key and the short-circuit prevention electric lock, the assembly gap can cause that a key electrode (a main electrode and an auxiliary electrode) of the computer key and a key electrode matching terminal of the short-circuit prevention electric lock have slight dislocation along the circumferential direction, the circumference is arranged along the same circumference and is coaxial with the axis of the rotating core, even if the slight dislocation exists, the effective contact between the electrode of the computer key and the matching terminal of the short-circuit prevention electric lock can be ensured, the stability of a contact surface is ensured, and the electric connection is very reliable; meanwhile, the main electrode mating terminal 434 is designed to be multi-contact and elastic, so that mutual influence of contact of the contacts is very small, even if a certain contact is poor in contact, the electric connection between the main electrode mating terminal 434 and the main electrode is not affected, and the risk of poor contact between the electric lock and a computer key is reduced.

Each of the first electrode assembly and the second electrode assembly further includes an inner electrode electrical connection mechanism for connecting the respective inner electrode 420 and the main electrode mating terminal 434, the inner electrode electrical connection mechanism includes a lead 433 and a metal gasket 432, and the metal gasket 432 is electrically connected with the main electrode mating terminal 434 through the lead 433 in a normally conductive manner; the internal electrode 420 is a conductive rod with external threads at one end and internal threads at the other end, the external-threaded end of the internal electrode 420 sequentially penetrates through the face cover sealing plate 650 and the metal gasket 432 and then is fixedly connected to the electrode mounting piece through the metal nut 431, and the internal electrodes 420 of the two electrode assemblies are axially symmetrically mounted on the electrode mounting piece; the inner contact 420, the metal washer 432 and the metal nut 431 are all made of conductive material, so that the inner contact 420 and the main electrode mating terminal 434 of each electrode assembly are normally electrically connected.

As shown in fig. 17, 21 and 22, each of the first electrode assembly and the second electrode assembly further includes an internal and external electrode electrical connection mechanism for connecting the internal electrode 420 and the external electrode 410, and the internal and external electrode electrical connection mechanism includes a first connection terminal 411 fixedly mounted on the external electrode 410 and a second connection terminal 412 fixedly mounted on the insulating adaptor 500; the external electrode 410 is fixed by a fixing nut 414 after passing through the first connection terminal 411; the first connection terminal 411 is fixedly connected to the mounting base 300 by a screw 413 (not shown); the second connection terminals 412 of the two electrode assemblies are axially symmetrically mounted at the bottom of the insulating adaptor 500, and one end of the internal electrode 420 with internal threads penetrates through the insulating adaptor 500 to be fixedly connected with the second connection terminals 412 by screws; the first connection terminal 411 and the second connection terminal 412 are made of conductive material, as mentioned above, the first connection terminal 411 is normally electrically connected and fixedly connected with the external electrode 410, and the second connection terminal 412 is normally electrically connected with the main electrode mating terminal 434.

Referring to fig. 18, the first connection terminal 411 is provided with a conductive elastic piece 4111 protruding outward, and an end of the conductive elastic piece protrudes outward to form a contact point, and the first connection terminal 411 is driven by the rotation of the rotary core to connect or disconnect with the second connection terminal 412 through the contact point, so as to connect or disconnect the external electrode 410 and the main electrode mating terminal 434.

Further, with reference to fig. 3, 19 and 23, a readable code sheet 700 is disposed above the lock cylinder, the readable code sheet 700 is fixedly disposed in a reserved code sheet groove 303 of the mounting seat 300 (the readable code sheet 700 may be integrally formed with the mounting seat 300), and the readable code sheet 700 is provided with an unlocking through hole corresponding to the lock cylinder 200; the mounting base 300 is provided with a pair of slots, the pair of internal electrodes 420 penetrate through the slots and then are fixedly connected with the insulating adaptor 500, and the internal electrodes 420 are driven by the rotary core to rotate in the slots.

Further, as shown in fig. 3, 14, 16A and 20, the insulating adaptor 500 is provided with a positioning chute, a positioning mechanism is disposed in the positioning chute, the positioning mechanism includes a positioning pin 531 (equivalent to a positioning member) and a positioning spring 532 (equivalent to an elastic member), the positioning pin 531 extends and retracts in the positioning chute through the positioning spring 532, and an unlocking positioning groove 301 and a locking positioning groove 302 which are matched with the positioning mechanism are disposed at a portion of the lower portion of the corresponding mounting base 300, which is embedded in the insulating adaptor 500; in the latched state, the positioning pin 531 is located in the latching positioning groove 302; when the rotary core rotates and unlocks, the insulating adapter drives the positioning mechanism to rotate, the mounting base pushes the positioning pin 531 to compress the positioning spring 532 to slide in the positioning groove, so that the positioning pin 531 is separated from the locking positioning groove 302, when the rotary core rotates to an unlocking position, the elasticity of the positioning spring 532 is released, and the positioning pin 531 enters the unlocking positioning groove 301 to position the lock core 200 in the unlocking position.

With reference to fig. 31, a computer key used in cooperation with the short-circuit prevention electric lock of the present embodiment; the computer key 002 includes:

an unlocking shaft assembly 021 for controlling rotation of the rotary core of the lock cylinder 200;

a pair of main electrodes 023 axially symmetric around a rotating shaft of the unlocking shaft assembly 021 and a pair of auxiliary electrodes 022 axially symmetric around the rotating shaft of the unlocking shaft assembly 021 (also the rotating shaft of the lock cylinder), wherein the main electrodes 023 are connected with a key loop in a computer key, and when the main electrodes 023 are connected with the external electrode 410, the key loop is electrically connected with the external; a pair of auxiliary electrodes 022 connected to the pair of auxiliary electrode mating terminals for allowing the computer key to obtain feedback information; each main electrode 023 is composed of a plurality of electrically connected key electrodes, so that the contact area between the main electrode 023 and the main electrode matching terminal 434 is increased, and the generation of electric sparks is reduced; each auxiliary electrode 022 is constituted by one key electrode; each key electrode is also arranged along a circumference which is coaxial with the rotating shaft of the lock core, and the contact surface of each key electrode in matching contact with the key electrode matching terminal is arranged along the tangential direction of the circumference, so that the key electrode can be ensured to be fully contacted with the key electrode matching terminal;

and a code reading head (not shown) reads the code value of the readable code sheet of the electric lock, judges whether the readable code sheet information is matched, and when the readable code sheet information is matched, the unlocking shaft assembly 021 drives the rotary core to rotate.

The parts of the computer key related to the present invention are only briefly described here, and detailed descriptions are omitted.

The working principle of the short-circuit prevention electric lock provided by the embodiment is described in the following with the accompanying drawings:

as can be seen from the above description, the external electrode 410, the first connection terminal 411, and the mounting base 300 are fixed to the lock body 100 and do not rotate; the insulating adaptor 500, the second connection terminal 412, the electrode mounting member 600, the internal electrode 420, the electrode mounting member 600, and the main electrode mating terminal 434 are rotated by the rotation core.

As shown in fig. 21 and 25; when the lock cylinder 200 is in the locking position, the first connection terminal 411 and the second connection terminal 412 are staggered by a certain angle (90 degrees in this embodiment) and are not conducted, so that the external electrode 410 and the main electrode mating terminal 434 are not conducted, and a loop is not formed, and at this time, the positioning pin 531 is located in the locking positioning groove 302, so that the rotation of the lock cylinder is limited; the insulating adaptor 500 and the mounting base 300 are both insulating components, and the internal electrode 420 and the external electrode 410 are effectively isolated from each other, so that even if a pair of main electrode matching terminals 434 are short-circuited outside by using a lead or other methods, since the external electrode 410 and the main electrode matching terminals 434 are not conducted, a loop cannot be formed, and short-circuit accidents and misoperation caused by short-circuiting the main electrode matching terminals 434 by personnel are effectively prevented;

when the unlocking shaft assembly of the computer key is inserted into the unlocking hole of the lock cylinder 200 through the key matching port, the anti-misoperation electric lock is located at the locking position, and the main electrode is in contact with the main electrode matching terminal 434; the reading head of the computer key reads the information in the readable code sheet 700, if the readable code sheet information is matched incorrectly, the unlocking shaft assembly of the computer key does not work, the rotating core of the lock core 200 cannot be driven to rotate, the external electric circuit cannot be communicated with the circuit of the computer key, and the circuit schematic diagram is combined with that shown in fig. 27;

if the readable chip information is matched correctly, the unlocking shaft assembly of the computer key drives the rotary core of the lock core 200 to rotate 90 degrees to an unlocking position, meanwhile, two main electrodes rotate 90 degrees and are still in contact conduction with the main electrode matching terminal 434, the rotation of the lock core drives the insulating adapter 500 to rotate, so that the position of the fixed second connecting terminal 412 on the insulating adapter 500 is changed (as shown in fig. 22 and 26), and meanwhile, the positioning pin 531 is separated from the locking positioning groove 302 and rotates along with the insulating adapter; the first connection terminal 411 and the second connection terminal 412 are conducted, so that the pair of external electrodes 410 and the pair of main electrode mating terminals 434 are conducted, and the external electrical circuit is connected with the computer key circuit, and the circuit schematic diagram is shown in fig. 30; and meanwhile, the positioning pin 531 enters the unlocking positioning groove 301, so that the rotation of the lock cylinder is limited.

If the auxiliary electrode matching terminal 435 for reading the status information is provided, the computer key will receive the information to be fed back by the auxiliary electrode matching terminal 435.

Therefore, the positioning mechanism moves between the unlocking positioning groove 301 and the locking positioning groove 302 under the driving of the insulating switching component, and in the rotating process, the hand of a person can slightly sense the vibration of the positioning pin against the positioning groove; in addition, if the positioning is successful, the positioning pin can limit the continuous rotation of the lock cylinder, and the hands of people can feel certain thrust, so that whether the unlocking or the locking is finished can be prompted to the operator.

Because the external electrode of the short-circuit prevention electric lock is generally directly connected to the 110V/220V external electric loop, the short-circuit prevention electric lock is very dangerous if being operated in a hot line; after the anti-short-circuit electric lock is unlocked, a computer key judges whether an external electric loop is in a charged state, and if the external electric loop is in the charged state, the computer key prompts that next action cannot be performed; and if the state is the non-charged state, prompting that the next action can be carried out.

Example two

The difference between the present embodiment and the first embodiment is that the external electrode 410, the first connection terminal 411, the mounting base 300, the electrode mounting member 600 and the main electrode mating terminal 434 are not rotated by the rotation of the rotation core; the insulating adaptor 500, the second connection terminal 412 and the internal connection electrode 420 are all fixedly connected with the rotary core and can rotate under the driving of the rotary core; the main electrode rotates along with the rotating core (at the moment, the main electrode of the computer key rotates along with the unlocking shaft component).

The bottom of the electrode mounting member 600 is provided with a pair of sliding grooves (a schematic diagram is not given in the present embodiment) for the rotation of the internal electrodes 420 of the two electrode assemblies; the internal electrode 420 is rotated in the slide groove by the rotation of the key cylinder 200, and is connected to or disconnected from the main electrode mating terminal 434 by an internal electrode electrical connection mechanism. The structure of the inner electrode electrical connection mechanism in this embodiment is different from that in the first embodiment, and may be similar to that in the first embodiment, or may be any other structure capable of connecting or disconnecting the main electrode mating terminal 434 and the internal electrode.

The inner and outer electrode connecting mechanism in this embodiment is the same as the first embodiment, and still includes a second connecting terminal 412 fixedly connected to the inner electrode 420 and a first connecting terminal 411 fixedly connected to the outer electrode 410.

As shown in fig. 23, when the unlocking shaft assembly of the computer key is inserted into the unlocking hole of the lock cylinder 200 through the key matching port, the electrical lock for preventing false connection is located in the locking position, the main electrode of the computer key is staggered with the main electrode matching terminal 434 by a certain angle (90 degrees in this example, not shown), and the first connecting terminal 411 is staggered with the second connecting terminal 412 by a certain angle (90 degrees in this example, refer to fig. 25) and is not conducted; the internal electrode 420 is not conducted with the main electrode mating terminal 434; thereby making the external electrodes 410 of the two electrode assemblies and the main electrode mating terminal 434 non-conductive and not forming a loop;

the code reading of the computer key and the information in the readable code piece 700 are read, if the readable code piece information is matched incorrectly, the unlocking shaft assembly of the computer key does not work, the rotating core of the lock core 200 cannot be driven to rotate, the external electric loop cannot be communicated with the computer key loop, and the circuit schematic diagram is combined with that shown in fig. 28;

if the readable code piece information is matched correctly, the unlocking shaft assembly of the computer key drives the rotating core of the lock core 200 to rotate 90 degrees to an unlocking position, the rotation of the lock core drives the insulating adapter 500 to rotate, meanwhile, two main electrodes rotate 90 degrees and then are respectively communicated with the main electrode matching terminal 434, the main electrode matching terminal 434 is communicated with the internal electrode 420 through the internal electrode electric connection mechanism, the first connection terminal 411 is communicated with the second connection terminal 412 by 9 (refer to fig. 24 and 26), so that the external electrode 410 is communicated with the main electrodes, the external electric circuit is communicated with a computer key circuit, and a circuit schematic diagram of the external electric circuit is combined with that shown in fig. 30.

EXAMPLE III

The present embodiment is different from the second embodiment in that the main electrode mating terminal 434 and the internal electrode 420 are normally electrically connected by an internal electrode electrical connection mechanism (such as a lead).

Example four

The difference between the present embodiment and the first embodiment is that the external electrode 410, the first connection terminal 411, the mounting base 300, the electrode mounting member 600, the key electrode mating terminals, and the internal electrode 420 are fixed to the lock body 100 and do not rotate; the insulation adapter 500 and the second connection terminal 412 are both fixedly connected with the rotary core and can rotate under the driving of the rotary core; the main electrode rotates together with the rotary core.

The insulating adaptor 500 is provided with a pair of rotating grooves for the pair of internal electrodes 420 to rotate (a schematic diagram is not given in the present embodiment); the internal electrode 420 rotates in the rotation slot relative to the insulating adapter 500 (actually, the insulating adapter 500 rotates, the internal electrode 420 does not rotate) under the driving of the rotation core of the key cylinder 200, and the internal electrode 420 is connected with or disconnected from the second connection terminal 412. It can be seen that the structure of the internal and external electrode electrical connection mechanism of the present embodiment is different from that of the first embodiment, the internal and external electrode electrical connection mechanism of the present embodiment includes a second connection terminal 412 fixed on the insulating adaptor 500, and a second connection terminal fixedly connected to the external electrode; the second connection terminal 412 and the internal electrode 420 in this embodiment are not fixedly connected but are turned on or off by the rotation of the rotary core.

When an unlocking shaft assembly of a computer key is inserted into an unlocking hole of the lock cylinder 200 through a key matching port, the electrical lock for preventing mistaken connection is located at a locking position, two main electrodes and two main electrode matching terminals 434 are staggered by 90 degrees, a first connecting terminal 411 and a second connecting terminal 412 are staggered by a certain angle (90 degrees in the example, refer to fig. 22) and are not conducted, and an internal connecting electrode 420 and the second connecting terminal 412 are staggered by a certain angle (90 degrees in the example) and are not conducted; thereby making the external electrode 410 and the main electrode mating terminal 434 non-conductive and not forming a loop;

the code reading of the computer key and the information in the readable code piece 700 are read, if the readable code piece information is matched incorrectly, the unlocking shaft assembly of the computer key does not work, the rotating core of the lock core 200 cannot be driven to rotate, the external electric loop cannot be communicated with the computer key loop, and the circuit schematic diagram is combined with that shown in fig. 29;

if the readable chip information is matched correctly, the unlocking shaft assembly of the computer key drives the rotating core of the lock core 200 to rotate 90 degrees to an unlocking position, the rotating core drives the insulating adapter 500 to rotate, and meanwhile, the two main electrodes rotate 90 degrees and then contact with the two main electrode matching terminals 434; the internal electrode 420 is connected to the second connection terminal 412, the first connection terminal 411 is connected to the second connection terminal 412 (refer to fig. 26), so that the external electrode 410 is connected to the main electrode, and the external electrical circuit is connected to the computer key circuit, and the circuit schematic diagram is shown in fig. 30.

EXAMPLE five

The present embodiment is different from the fourth embodiment in that the internal electrode 420 is electrically connected to the second connection terminal 412 through an electrical connection member (e.g., a wire).

The aforesaid is only the preferred embodiment of the utility model discloses a protection scope does not only confine above-mentioned embodiment, the all sides belong to the utility model discloses under the thinking, need not to be through the increase and decrease scheme that the same alternative scheme, the same technical characteristic that creative work can be acquireed should belong to the utility model discloses a disclosure scope.

Furthermore, the terms "upper", "lower", "left", "right", "parallel", "perpendicular", etc. that may be used in the description of the present invention are intended to provide a clear description of the structure of the present invention in connection with the accompanying drawings, and should not be construed as limiting the specific orientation, direction of the present invention during the manufacturing, use, and sale processes.

Claims (15)

1. A short circuit prevention electric lock comprises a lock body, a lock core, an adapter, a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly are respectively matched and connected with two main electrodes of a computer key; the lock body is provided with a key matching port and an accommodating cavity arranged below the key matching port, and the lock cylinder is arranged in the accommodating cavity; the first electrode assembly and the second electrode assembly respectively comprise a main electrode matching terminal and an external electrode connected with an external electric loop, the main electrode matching terminals of the first electrode assembly and the second electrode assembly are arranged around the key matching port in an axial symmetry manner, and the adaptor is fixedly connected with the rotation driving end of the lock cylinder;

the first electrode assembly and the second electrode assembly respectively comprise an internal electrode arranged in the accommodating cavity; the adapter is driven by the lock cylinder to rotate, and the internal electrodes of the first electrode assembly and the second electrode assembly control the conduction or disconnection of the external electrodes and the main electrode matched terminal; when the lock core is in a locking position, the internal electrode is disconnected with the external electrode; when the lock core is in the unlocking position, the main electrode matching terminal, the internal connection electrode and the external connection electrode are conducted.

2. The electric lock against short circuit as set forth in claim 1, wherein an electrode mounting member is further disposed in the accommodating chamber; the electrode mounting piece is provided with the key matching opening, the main electrode matching terminals of the first electrode assembly and the second electrode assembly are mounted on the electrode mounting piece around the key matching opening, and the internal electrode is arranged on the electrode mounting piece in an axisymmetric manner.

3. The anti-short circuit electric lock according to claim 2, wherein the adaptor is an insulating adaptor, the inner electrodes of the first electrode assembly and the second electrode assembly penetrate through the insulating adaptor, and the inner electrodes are connected with or disconnected from the outer electrodes at the bottom of the insulating adaptor.

4. The anti-short circuit electric lock of claim 3, wherein the first electrode assembly and the second electrode assembly each further comprise an inner and outer electrode electrical connection mechanism connecting the inner electrode and the outer electrode; the internal and external electric connection mechanism comprises a first connection terminal and a second connection terminal, the first connection terminal is fixedly connected with the external electrode and is normally electrically connected, and the second connection terminal is fixedly arranged at the bottom of the insulating adapter; the insulation adapter is driven by the lock cylinder to rotate so as to drive the second connecting terminal to be connected with or disconnected from the first connecting terminal; when the unlocking position is realized, the second connecting terminal is conducted with the internal connecting electrode.

5. The electrical short-circuit prevention lock as recited in claim 4, wherein the electrode mounting member is fixedly connected to the insulating adapter member, and both are rotated by the rotation of the lock cylinder; the internal electrode is fixedly mounted on the electrode mounting piece and is normally and electrically connected with the main electrode matching terminal, and the internal electrode is fixedly connected with the second connecting terminal and is normally and electrically connected with the second connecting terminal;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal electrode is fixedly arranged on the electrode mounting piece and is normally and electrically connected with the main electrode matching terminal; the internal connection electrode is normally electrically connected with the second connection terminal;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal electrode is fixedly arranged on the electrode mounting piece and is normally and electrically connected with the main electrode matching terminal; under the rotation drive of the lock cylinder, the insulating adapter drives the second connecting terminal to be connected with or disconnected from the internal connecting electrode;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal connection electrode is fixedly connected with the second connecting terminal and is in normally-on electrical connection with the second connecting terminal; the internal electrode is driven by the rotation of the lock cylinder to rotate, and the internal electrode is normally electrically connected with the main electrode matching terminal;

or the electrode mounting piece is fixedly arranged in the accommodating cavity, and the insulating adapter piece rotates under the driving of the rotation of the lock cylinder; the internal connection electrode is fixedly connected with the second connecting terminal and is in normally-on electrical connection with the second connecting terminal; under the rotation drive of the lock cylinder, the insulating adapter piece drives the inner electrode to be connected with or disconnected from the main electrode matched terminal.

6. The electrical short-circuit prevention lock as claimed in any one of claims 4 or 5, wherein the first connection terminal comprises at least one set of conductive spring pieces, and the ends of the conductive spring pieces protrude outwards to form protruding contacts; the first connection terminal is connected to or disconnected from the second connection terminal through the protruding contact.

7. The short circuit prevention electric lock according to any one of claims 1 to 5, further comprising a mounting seat arranged above the adapter piece and fixed in the accommodating cavity, wherein the lock cylinder is arranged on the mounting seat; a positioning groove is formed in the adaptor, a positioning mechanism comprising a positioning piece and an elastic piece is arranged in the positioning groove, and the positioning piece stretches and retracts in the positioning groove under the action of the elastic piece; and the corresponding mounting seat is provided with an unlocking position positioning matching mechanism and a locking position positioning matching mechanism which are matched with the positioning mechanism.

8. The electrical short circuit prevention lock of any one of claims 1 to 5, wherein the lock body further comprises a protection cover for opening and closing the key engagement opening.

9. The anti-short circuit electric lock of claim 2, wherein the main electrode mating terminals of the first electrode assembly and the second electrode assembly are respectively constituted by two or more key electrode mating terminals electrically connected to each other, and each of the key electrode mating terminals of the main electrode mating terminals of the first electrode assembly and the second electrode assembly is mounted on the electrode mounting member around the key mating opening.

10. The electrical short-circuit prevention lock of claim 9 wherein the first electrode assembly and the second electrode assembly each further comprise an auxiliary electrode mating terminal comprising a key electrode mating terminal; and the key electrode matching terminals of the auxiliary electrode matching terminals of the first electrode assembly and the second electrode assembly are arranged on the electrode mounting piece around the key matching opening and are connected with the output end of a state detection device.

11. The electrical short-circuit prevention lock of claim 10, wherein the main electrode mating terminals of the first and second electrode assemblies are arranged axisymmetrically around the rotational axis of the key cylinder, and the auxiliary electrode mating terminals of the first and second electrode assemblies are arranged axisymmetrically around the rotational axis of the key cylinder; the key electrode mating terminals are arranged on the same circumference.

12. The anti-short circuit electric lock of claim 11, wherein the contact surface of each key electrode mating terminal is tangential to the circumference.

13. The electrical short-circuit prevention lock of claim 9 wherein the contact surface of each key electrode mating terminal projects beyond the inner annular wall surface of the electrode mount.

14. The electrical short circuit prevention lock as recited in any one of claims 9 to 13, wherein each of the key electrode mating terminals is resilient in a direction perpendicular to the contact surface.

15. The electrical short circuit prevention lock of claim 14 wherein a terminal spring is disposed on a back side of the contact surface of each key electrode mating terminal.

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