CN110616966B - Electric lock body - Google Patents

Abstract

The invention provides an electric lock body which is simple in structure and high in stability and can improve the accuracy of door closing detection. This electronic lock body includes: the lock comprises a lock shell, a circuit board assembly, a main spring bolt assembly, a dual-drive assembly and a telescopic dual-trigger detection assembly, wherein the circuit board assembly, the main spring bolt assembly, the dual-drive assembly and the telescopic dual-trigger detection assembly are arranged in the lock shell; wherein the dual drive subassembly is used for providing drive power for the flexible of main spring bolt subassembly, realizes the automation of lock body. The main lock tongue component is an actuating mechanism of the electric lock body and is connected with the output end of the driving force of the driving component. The latch bolt component is matched with the main lock bolt component, is a protection mechanism of the main lock bolt and prevents the main lock bolt from being impacted by the door frame. The telescopic double-trigger detection component is a detection mechanism for the door opening and closing state.

Description

Electric lock body

Technical Field

The invention relates to a lock body, in particular to an electric lock body, and relates to the technical field of intelligent door locks.

Background

Currently, door locks on the market can be divided into two categories: mechanical lock bodies and electronic lock bodies. The mechanical lock body is a lock body which is matched with mechanical parts and drives a lock tongue to open and close by screwing a handle, and the lock body has poor anti-theft performance and complex operation, so that an electronic lock body is designed.

One electronic lock body is opened and closed by pushing a pin through a motor, but the opening and closing of a door lock still needs to be realized by screwing a handle, and the lock body is complex in structure and still low in convenience; another kind of electronic lock body has realized the electric drive of spring bolt, for example the electronic lock disclosed in chinese utility model patent CN200420038523.7, in order to increase drive power, single gear motor's output shaft and drive bevel gear fixed connection, drive bevel gear and driven bevel gear meshing, driven bevel gear's upper portion is fixed with the driving lever with the nut, and the driving lever moves in dialling the groove and drives the flexible removal of spring bolt. The lock body is complex in internal structure, when the motor is in a stop state and the lock tongue is driven to move by the manual switch, the driving bevel gear and the driven bevel gear need to be driven to be meshed and driven at the same time, the hand feeling is very heavy, and the application experience of the lock is seriously influenced; for example, chinese patent No. cn201810972187.x provides an electronic door lock structure, which can disconnect the power connection between the motor and the door lock when power is off or the electronic component is damaged, and then the lock is unlocked by using a key, and the power part of the lock body still adopts a structure in which a single motor is connected to a bevel gear reducer, so as to realize the clutch of the transmission part, an output rod and a straight-groove clutch shaft are added, and the structure is more complicated.

Therefore, the existing electronic lock body adopts a single-motor structure, so that the stability of the lock body is poor, and in order to solve the problem that the lock body cannot be opened when the motor damages the lock body, a mechanical key hole is reserved, the safety of the lock body is reduced, and the complexity of the lock body structure is increased; in addition, the door opening and closing detection of the existing lock body cannot detect the condition that the door is hidden but not closed, so that false triggering is easily caused, or the condition that the door is not locked after people walk is easily caused; in addition, because the parts of the lock body are complex and the space is small, the control circuit of the existing electric lock body is arranged in the panel, the door is easy to open through the control circuit board after the front panel is pried off, and the safety of the lock body is low; moreover, the existing lock bodies all need square steel handles for screwing and opening the door, the thickness of the door body needs to be considered during installation, and the adaptability of the lock bodies is poor; the main bolt of the existing lock body does not have a protection function, is easy to deform due to collision, so that a door lock cannot be opened, and the stability of the lock body is poor.

Disclosure of Invention

In view of this, the present invention provides an electric lock body with simple structure and high stability, which can improve the accuracy of door closing detection.

The electronic lock body include: the lock comprises a lock shell, a circuit board assembly, a main spring bolt assembly, a dual-drive assembly and a telescopic dual-trigger detection assembly, wherein the circuit board assembly, the main spring bolt assembly, the dual-drive assembly and the telescopic dual-trigger detection assembly are arranged in the lock shell;

the dual drive subassembly is used for providing drive power for main spring bolt assembly's is flexible, includes: the speed reducer comprises a main motor, an auxiliary motor and a speed reducing mechanism, wherein the main motor and the auxiliary motor are respectively fixed in a lock shell through motor fixing discs, and output shafts of the main motor and the auxiliary motor are fixedly connected with driving gears; the two driving gears transmit power to the main bolt assembly through the speed reducing mechanism respectively;

the main bolt assembly includes: the main lock tongue, the control button and the guide plate; one end of the main spring bolt in the moving direction is provided with a lock head, and a lock head hole for extending or retracting the lock head out of or into the lock shell is arranged on the lock shell at a position corresponding to the lock head; the control button is connected with the speed reducing mechanism in the dual-drive assembly and rotates around the axis of the control button under the drive of the dual-drive assembly; a thrust rod is arranged on the outer circumference of the control button, the end part of the thrust rod is positioned in a thrust groove arranged on the main lock tongue, and when the control button rotates, the thrust rod pushes the main lock tongue to extend or retract through the thrust groove; the guide post on the main spring bolt is in sliding fit with the limit guide groove on the guide plate fixed in the lock shell, and plays a role in limiting and guiding the movement of the main spring bolt;

the telescopic double-trigger detection assembly comprises two telescopic trigger detection tongues; a detection hole is formed in the position, corresponding to one of the trigger detection tongues, of the door frame; when the door body is in a closed state, the trigger detection tongue corresponding to the detection hole extends into the detection hole, namely the trigger detection tongue is in an extended state, and the other trigger detection tongue is extruded by the door frame and retracts into the lock shell; a state detection sensor for detecting the extension state of each trigger detection tongue is arranged in the lock shell corresponding to each trigger detection tongue;

the circuit board assembly includes: the main control circuit board and the detection circuit board; the detection circuit board is connected with the two state detection sensors and is used for receiving signals detected by the two state detection sensors so as to realize detection of the opening/closing state of the door body; the main motor and the auxiliary motor in the dual-drive assembly are controlled by the main control circuit board; and when the detection circuit board judges that the door body is in a closed state, a door closing instruction is sent to the main control circuit board, and the main control circuit board controls the starting of the main motor or/and the auxiliary motor in the dual-drive assembly.

As a preferable mode of the invention, the device further comprises a latch tongue component; the latch tongue assembly comprises: the latch bolt and the latch bolt limiting component; the latch bolt can extend out or retract into the lock shell, and when the latch bolt extends in place, the thickness of the end, extending out of the lock shell, of the latch bolt is larger than that of the lock head;

the latch bolt limiting assembly is linked with the main lock bolt assembly, and when the main lock bolt extends out, the latch bolt limiting assembly limits the latch bolt so that the latch bolt is kept in an extending in-place state; when the main bolt retracts into the inside of the lock shell, the limit of the oblique bolt is released by the oblique bolt limiting assembly, and the oblique bolt can freely extend out or retract.

In a preferred aspect of the present invention, the latch tongue includes: the oblique tongue block, the oblique tongue fixing block, the connecting column, the compression spring and the oblique tongue guide block; the two axial ends of the connecting column are respectively and fixedly connected with a latch bolt fixing block and a latch bolt guide block, and the axial direction of the connecting column is parallel to the moving direction of the main lock bolt; the compression spring is coaxially sleeved on the outer circumference of the connecting column, one end of the compression spring is abutted against the guide plate of the connecting column, and the other end of the compression spring is abutted against the latch bolt fixing block; the connecting column guide plate is fixed inside the lock shell, and a U-shaped groove which is used for enabling the connecting column to penetrate through and is in sliding fit with the connecting column is processed on the connecting column guide plate;

cylindrical bulges are arranged at two opposite ends of the oblique tongue fixing block in the direction perpendicular to the axis of the connecting column, and the two oblique tongue blocks are coaxially and fixedly arranged at two ends of the oblique tongue fixing block through the cylindrical bulges; the two inclined tongue blocks are arranged along the thickness direction of the door body; the end face of each oblique tongue block, which is opposite to the oblique tongue fixing block, is an inner end face of the oblique tongue block, the end face of each oblique tongue block, which is opposite to the inner end face, is an outer end face of the oblique tongue block, a limiting arc table is designed on the outer end face of each oblique tongue block, each limiting arc table comprises an arc end face and a plane end face, the plane end faces of the limiting arc tables are parallel to and contact with the inner surface of the lock shell, and when the oblique tongues stretch out in place, the size of the two oblique tongue blocks along the thickness direction of the door;

the two latch bolt guide plates are oppositely and fixedly arranged, rectangular grooves parallel to the axial direction of the connecting column are processed on the two latch bolt guide plates to serve as guide grooves, bosses at the upper end and the lower end of each latch bolt guide block are respectively positioned in the guide grooves on the two latch bolt guide plates, and the guide grooves are used for guiding and limiting the movement of the connecting column;

the oblique tongue limiting block assembly is arranged at the end of the oblique tongue guide block, and when the oblique tongue limiting block assembly props against the oblique tongue guide block, the oblique tongue is limited.

As a preferred aspect of the present invention, the latch bolt limiting assembly includes: the bending plate, the top shaft, the sleeve, the stop block rotating shaft, the reset spring and the spring limiting column; the bending plate comprises an upper plate and a lower plate which are formed after bending, the sleeve is arranged between the upper plate and the lower plate of the bending plate, and the jacking shaft penetrates through the upper plate and the lower plate to fix the sleeve between the upper plate and the lower plate of the bending plate;

the stop block rotating shaft penetrates through the bending plate and is fixed in the lock shell, and the bending plate can rotate around the stop block rotating shaft; the spring limiting column is fixed in the lock shell, the reset spring is sleeved on the part of the stop block rotating shaft between the upper plate and the lower plate of the bending plate, one end of the reset spring is fixed on the spring limiting column, and the other end of the reset spring is fixed on the stop block rotating shaft; the relative position of the stop block rotating shaft and the spring limiting column is ensured, and when the reset spring is in the reset position, the sleeve props against the latch bolt guide block to limit the latch bolt;

a position, corresponding to the bending plate, on the main spring bolt is provided with a convex limiting table, when the main spring bolt retracts into the lock shell, the limiting table props against the bending plate, and at the moment, the reset spring is twisted to have reset torque; when the main spring bolt extends to the right position, the limiting table releases the limiting of the bending plate, and the bending plate rotates to a reset position around the stop block rotating shaft under the action of the reset spring.

As a preferred aspect of the present invention, the trigger detecting tongue includes: the triangular tongue, the connecting rod, the return spring and the detection guide plate; the detection guide plate is fixed inside the lock shell, one end of the connecting rod extends out of the lock shell and is connected with the triangular tongue, and the other end of the connecting rod penetrates through a guide hole in the detection guide plate and is in sliding fit with the guide hole in the detection guide plate; when the triangular bolt is pressed by the doorframe, the triangular bolt can retract into the lock shell; reset spring suit is outside the connecting rod, reset spring one end is contradicted with the arch on the connecting rod, and the other end is contradicted with the detection deflector.

Has the advantages that:

(1) the electric lock body is free of lock holes (mechanical key holes), the main spring bolt assembly is driven by the double motors, and the stability and the safety of the lock body can be effectively improved.

(2) The oblique bolt component linked with the main bolt component is additionally arranged, the main bolt is protected through the oblique bolt component, and the stability of the lock body is improved.

(3) The extension double-trigger detection mechanism is additionally arranged, the problem that the door is hidden by mistake and cannot be detected can be solved, and the accuracy of door closing detection is improved.

(4) The dual straight gear transmission in the dual-drive assembly can realize manual and automatic opening without interference without a clutch structure, thereby reducing the complexity of the lock body structure.

(5) The lock body is arranged in the double motors and the control circuit, so that personnel cannot contact the main control circuit board, and the integration level and the safety of the lock body are improved.

(6) The lock body does not need to be screwed with a handle when the door is opened, and has no rigidity in front and back during installation, and the thickness of the door does not need to be considered, so that the adaptability of the lock body is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the electric lock body of the present invention;

FIG. 2 is a schematic structural diagram of a dual drive assembly;

fig. 3 is a schematic structural view of a main bolt assembly;

FIG. 4 is a schematic structural view of a latch assembly;

FIG. 5 is a left side view of the latch assembly;

FIG. 6 is a schematic diagram of the position of a return spring in the latch bolt limiting block;

fig. 7 is a schematic structural diagram of the telescopic dual-trigger detection assembly.

Wherein: 1-lock shell, 21-main control circuit board, 22-detection circuit board, 3-main bolt assembly, 311-lock head, 3111-square open slot, 312-connecting plate, 313-detection plate, 3120-riveting hole, 3121-first guide column, 3122-pressing column, 3123-second guide column, 3124-limit table, 3125-thrust groove, 32-control button, 321-tooth-shaped structure, 322-special-shaped hole, 323-thrust rod, 33-opening plate, 34-sealing plate, 35-guide plate, 351-limit guide groove, 36-torsion spring, 4-oblique bolt assembly, 42-connecting column guide plate, 43-oblique bolt guide plate, 411-oblique bolt block, 412-oblique bolt fixing block, 413-connecting column, 414-compression spring guide plate, etc, 415-oblique tongue guide block, 4112-limiting circular arc table, 4121-cylindrical protrusion, 441-bending plate, 442-top shaft, 443-sleeve, 444-stop rotating shaft, 445-reset spring, 446-spring limiting column, 4411-hole A, 4412-hole B, 4413-hole C, 4441-notch, 5-double drive component, 51-main motor, 52-auxiliary motor, 531-upper cover plate, 532-middle fixing plate, 533-bottom supporting plate, 534-first duplex spur gear, 535-second duplex spur gear, 536-third duplex spur gear, 537-fourth reduction gear, 54-main motor fixing plate, 55-auxiliary motor fixing plate, 56-driving gear, 6-telescopic double-trigger detection component, 611-triangular tongue fixing plate, and fourth reduction gear, 612-connecting rod, 613-return spring, 614-fixed riveting column and 615-detection guide plate

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

For solving the problem that the existing electronic lock body has the door closing error detection side, the structure is complex and the installation universality is low, the embodiment provides the electric lock body which has high reliability and high safety and has a relatively simple structure.

As shown in fig. 1, the electric lock body includes: the lock comprises a lock shell 1, and a circuit board assembly, a main bolt assembly 3, a latch bolt assembly 4, a dual-drive assembly 5 and a telescopic dual-trigger detection assembly 6 which are arranged inside the lock shell 1.

Wherein the double-drive component 5 is used for providing driving force for extending out or retracting the lock shell of the main bolt component, thereby realizing the automation of the lock body. As shown in fig. 2, the dual drive assembly 5 comprises: a main motor 51, an auxiliary motor 52 and a duplex spur gear reduction box; the double straight gear reduction box is used for transmitting power to improve torque, and comprises: an upper cover plate 531, an intermediate fixing plate 532, and a bottom support plate 533 connected by a column, a first dual spur gear 534 between the upper cover plate 531 and the intermediate fixing plate 532, and a second dual spur gear 535, a third dual spur gear 536, and a fourth reduction gear 537 between the intermediate fixing plate 532 and the bottom support plate 533. The first duplex spur gear 534, the second duplex spur gear 535 and the third duplex spur gear 536 all have a large tooth surface and a small tooth surface (namely, two straight tooth surfaces with different diameters are coaxially arranged, wherein the straight tooth surface with the larger diameter is the large tooth surface, and the straight tooth surface with the smaller diameter is the small tooth surface). The main motor 51 and the auxiliary motor 52 are fixedly connected to the upper cover plate 531 through a main motor fixing plate 54 and an auxiliary motor fixing plate 55, respectively, and the upper cover plate 531 is fixed on the lock case 1, so that the dual drive assembly 5 is fixed inside the lock case 1. The output shafts of the main motor 51 and the auxiliary motor 52 are fixedly connected with a driving gear 56. The main motor 51 and the auxiliary motor 52 rotate to drive the driving gears 56 connected with the main motor to rotate, the two driving gears 56 are respectively meshed with the large tooth surfaces of the first duplex spur gear 534, the small tooth surface of the first duplex spur gear 534 is meshed with the large tooth surface of the second duplex spur gear 535, the small tooth surface of the second duplex spur gear 535 is meshed with the large tooth surface of the third duplex spur gear 536, the small tooth surface of the third duplex spur gear 536 is meshed with the fourth reduction gear 537, and the fourth reduction gear 537 is connected with the main bolt assembly and is used for transmitting power to the main bolt assembly to drive the main bolt to perform linear motion so as to extend out of or retract into the lock shell, thereby realizing the automatic opening and closing of the lock body. Adopt two motor drive in the dual drive subassembly 5, main motor 51 and vice motor 52 exclusive use all can drive the main spring bolt and carry out concertina movement, realize the automatic start and close of lock body, and any motor damages and does not influence the use of lock body, and when the resistance was too big, two motors also can start simultaneously, produced great drive power, realize opening and close of lock body, improved the stability of lock body operation.

The main lock tongue component is an actuating mechanism of the electric lock body and is connected with the output end of the driving force of the driving component 5. As shown in fig. 3, the main bolt assembly includes: a main bolt, a control knob 32, an opening plate 33, a sealing plate 34 and a guide plate 35. Wherein the main spring bolt includes: a locking head 311 and a connecting plate 312. A lock head hole for extending or retracting the lock head 311 to the lock case 1 is arranged on the lock case 1 at a position corresponding to the lock head 311; for convenience of description, the moving direction of the main bolt is horizontal, the end where the lock 311 is located is the front end, and the end where the guide plate 35 is located is the rear end. Tapered end 311 and connecting plate 312 are along transverse connection, specifically do: a square open slot 3111 is processed on the bottom surface of the transverse rear end of the lock head 311, and one end of the connecting plate 312 is in interference fit with the square slot 3111 to realize the fixed connection of the lock head 311 and the connecting plate 312; the dual drive assembly 5 is disposed on the left side of the rear end of the connection plate 312. A first guide column 3121 and a pressing column 3122 are respectively fixed on the connecting plate 312 through two riveting holes 3120, wherein one end of the pressing column 3122 is fixed on the connecting plate 312, and the other end is abutted against the inner surface of the lock case 1 for pressing the connecting plate 312, so as to prevent the main bolt from tilting during the telescopic motion. The guide plate 35 is fixed inside the lock shell 1, the bar-shaped groove which is in sliding fit with the first guide column 3121 is processed on the guide plate 35 to serve as the limiting guide groove 351, the length direction of the limiting guide groove 351 is along the moving direction of the main bolt, when the main bolt moves, the first guide column 3121 moves in the limiting guide groove 351 of the guide plate 35, the length of the limiting guide groove 351 is the maximum moving stroke of the main bolt, and therefore the limiting guide effect is achieved by the pressing column 3122, the first guide column 3121 and the limiting guide groove 351 on the movement of the main bolt.

The control knob 32 is arranged on the connecting plate 312 at the side where the dual-drive assembly 5 is located, and a tooth-shaped structure 321 used for being meshed with the fourth reduction gear 537 in the dual-drive assembly 5 is designed on the outer circumference of the control knob 32, so that the power of the dual-drive assembly 5 is transmitted to the control knob 32 to drive the control knob 32 to rotate. The outer circumference of the control knob 32 is provided with a thrust rod 323, the side of the connecting plate 312 corresponding to the control knob 32 is provided with a trumpet-shaped thrust groove 3125, the end of the thrust rod 323 extends into the thrust groove 3125, and when the control knob 32 rotates, the thrust rod 323 pushes the connecting plate 312 to perform linear motion of extension or retraction in the thrust groove 3125.

The middle part of the control button 32 is provided with a special-shaped hole 322 along the axial direction, the special-shaped hole 322 is matched with an external rotating tool, and in an emergency, the special-shaped hole 322 is inserted by using a corresponding rotating tool to realize indoor mechanical unlocking. The opening plate 33 and the sealing plate 34 are respectively arranged at the two axial ends of the control knob 32, and when the door is installed, the opening plate 33 is positioned at the inner end of the door and does not shield the special-shaped hole 322; the sealing plate 34 is arranged at the outer end of the door and covers the special-shaped hole 322, so that when the outer panel is knocked off, people outside the door cannot open the lock body through the special-shaped hole 322, and the safety of the lock body is improved.

In order to detect whether the lock body is reliably locked or not, a detection plate 313 is fixed on the connecting plate 312, photoelectric switches are respectively arranged at positions on the lock shell 1 corresponding to positions corresponding to the detection plate 313 when the main lock tongue extends out of position and retracts back to position, and when the main lock tongue extends out of position or retracts back to position, whether the main lock tongue extends out of position or retracts back to position is judged through the detection of the detection plate 313 through the photoelectric switches so as to judge whether the lock body is locked or unlocked. The two photoelectric switches are electrically connected with the circuit board assembly and send the detected signals to the circuit board assembly.

In the gear transmission of the dual-drive assembly, due to the existence of a gear gap, the main spring bolt extends out of or retracts into place, and after the motor stops working, the main spring bolt can shake to influence the stability of the lock body. In this regard, a torsion spring 36 is provided in the main bolt assembly for position retention when the main bolt is extended into position or retracted into position. The method specifically comprises the following steps: a strip-shaped groove is processed on the connecting plate 312 along the moving direction of the main bolt, and a connecting column fixed inside the lock shell 1 is in sliding fit with the strip-shaped groove; one end of the torsion spring 36 is connected to the connection post and the other end is connected to the thrust rod 322 of the control knob 32. When the thrust rod 322 pushes the main bolt to extend out of place or retract back to place, the torsion spring 36 is driven to twist, so that after the dual-drive assembly 5 stops working, the thrust rod 322 can be tightly abutted against the inner side surface of the corresponding side of the thrust groove 3125 under the action of the reset torque of the torsion spring 36, and the main bolt is prevented from shaking due to gear clearance.

In order to further ensure that the main bolt can extend out of or retract into the lock shell 1 along a straight line under the action of the thrust rod 322, a second guide column 3122 is fixed in the lock shell 1, the second guide column 3122 is a stepped column, the part with smaller diameter passes through the strip-shaped groove matched with the connecting column and then is fixed with the lock shell, and the part with smaller diameter is in sliding fit with the strip-shaped groove to realize the guide of the movement of the main bolt, a shaft shoulder is pressed on the connecting plate 312, and the auxiliary compression column 3122 avoids the tilting of the main bolt during the telescopic movement; thereby further ensuring the stability of the linear motion of the main bolt.

The latch bolt component 4 is matched with the main lock bolt component 3 and is a protection mechanism of the main lock bolt, and the main lock bolt is prevented from being impacted by the doorframe. The latch bolt component 4 is arranged inside the lock shell 1, and the right side of the connecting plate 312, namely the dual-drive component 5 and the latch bolt component 4 are respectively arranged at two opposite sides of the main latch bolt component 3. As shown in fig. 4, the latch assembly 4 includes: the oblique tongue, the connecting column guide plate 42, the oblique tongue guide plate 43 and the oblique tongue limiting component. Wherein the latch bolt includes: a latch block 411, a latch fixing block 412, a connecting column 413, a compression spring 414 and a latch guide block 415. The latch bolt fixing block 412 and the latch bolt guide block 415 are fixedly connected with two axial ends of the connecting column 413 respectively (the fixed connection is realized through the interference fit of a shaft and a hole), and the axial direction of the connecting column 413 is parallel to the sliding direction of the main latch bolt; the compression spring 414 is coaxially sleeved on the outer circumference of the connecting column 413, one end of the compression spring is abutted with the connecting column guide plate 42, and the other end of the compression spring is abutted with the end face of the latch bolt fixing block 412; the compression spring 414 provides an extension force for the latch tongue. The connecting column guide plate 42 is fixed inside the lock case 1, and a U-shaped groove for allowing the connecting column 413 to pass through and to be in sliding fit with the connecting column 413 is formed in the connecting column guide plate. The two latch bolt guide plates 43 are oppositely and fixedly arranged, rectangular grooves are processed on the two latch bolt guide plates 43, the length direction of each rectangular groove is parallel to the axial direction of the connecting column 413, bosses at the upper end and the lower end of the latch bolt guide block 415 are respectively positioned in the rectangular grooves on the two latch bolt guide plates 43 and can move in the rectangular grooves, and the rectangular grooves on the two latch bolt guide plates 43 play a role in guiding and limiting the movement of the latch bolts. The two opposite ends of the oblique tongue fixing block 412 in the direction perpendicular to the axis of the connecting column 413 are respectively provided with a cylindrical protrusion 4121, the two oblique tongue blocks 411 are matched with the cylindrical protrusions 4121 on the oblique tongue fixing block 412 through mounting holes on the two oblique tongue blocks 411, the two oblique tongue blocks 411 are coaxially and fixedly mounted at the two ends of the oblique tongue fixing block 412, and the two oblique tongue blocks 411 are arranged along the thickness direction of the door body. The end face of each latch bolt block 411 opposite to the latch bolt fixing block 412 is an inner end face, the end face opposite to the inner end face is an outer end face, a limiting arc table 4112 is designed on the outer end face of each latch bolt block 411, each limiting arc table 4112 comprises an arc end face and a plane end face, the plane end faces of the limiting arc tables are parallel to and in contact with the inner surface of the lock body 1, a latch bolt hole for extending or retracting the latch bolt block 411 into the lock body 1 is formed in the lock body 1 at a position corresponding to the latch bolt block 411, when the latch bolt block 411 is not extruded by a door frame, the latch bolt is in an extending-in-place state, and the size of the whole formed by the two latch bolt blocks 411 along the thickness direction of the door body is larger than the thickness size of the lock head 311 (the thickness refers to the size along the thickness direction of; when the latch bolt block 411 is not pressed by the door frame and the latch bolt limiting block assembly does not limit the latch bolt, the latch bolt block 411 rotates around the planar end surface of the limiting arc table 4112 on the pressing side (specifically, rotates around the end surface contour line of the planar end surface on the pressing side), and pushes the connecting column 413 to move backwards, compressing the compression spring 414.

The latch bolt limiting block component is arranged at the end part of the end where the latch bolt guiding block 415 is positioned (namely, the end part is positioned at the rear end of the latch bolt), and when the latch bolt limiting component props against the latch bolt guiding block 415, the latch bolt is limited, so that the latch bolt cannot move backwards; when the oblique tongue limiting component releases the limit of the oblique tongue, the oblique tongue can move freely along the transverse direction so as to extend out of or retract into the lock shell 1. As shown in fig. 6, the latch bolt limiting assembly comprises: a bending plate 441, a top shaft 442, a sleeve 443, a stopper rotating shaft 444, a return spring 445 and a spring limit column 446. The bending plate 441 comprises an upper plate and a lower plate which are formed after bending, the sleeve 443 is arranged between the upper plate and the lower plate of the bending plate 441, mounting holes (a hole A4411 and a hole B4412) for the top shaft 442 are respectively machined in the positions, corresponding to the sleeve 443, on the upper plate and the lower plate, the top shaft 442 penetrates through the hole A4411 and the hole B4412, and the sleeve 443 is fixed between the upper plate and the lower plate of the bending plate 441; the stop block rotating shaft 444 and the spring limiting column 446 are fixed on the lock shell 1, and the axes of the stop block rotating shaft and the spring limiting column are parallel to the axis of the sleeve 443; the bending plate 441 is in clearance fit connection with the stop block rotating shaft 444 through a hole C4413 and can rotate around the stop block rotating shaft 444; the return spring 445 is sleeved on the part of the stop rotating shaft 444, which is positioned between the upper plate and the lower plate of the bending plate 441, one end of the return spring is fixed in the notch 4441 of the spring limiting column 446, and the other end of the return spring is fixed in the notch on the outer circumference of the sleeve 443; when the bending plate 441 rotates around the stopper rotating shaft 444, so that the sleeve 443 no longer abuts against the latch guide block 415, the return spring 445 is twisted to have a return torque; the relative positions of the stop pivot 444 and the spring retaining posts 446 ensure that the sleeve 443 is positioned directly behind the latch guide 415 against the latch guide 415 when the return spring 445 is in the return position.

The side of the connecting plate 312 where the latch bolt assembly 4 is located is provided with a convex bending structure as a limiting table 3124 for cooperating with the latch bolt assembly 4. When the main bolt is retracted, the limit table 3124 on the connecting plate 312 pushes the bending plate 441 to rotate around the stop rotation shaft 444, so that the sleeve 443 no longer supports against the latch bolt guide block 415, the latch bolt can freely move along the transverse direction, and the return spring 445 has a return torque when twisted; after the door is locked, the main lock tongue extends out, the limiting table 3124 moves forwards along with the main lock tongue, the main lock tongue does not contact with the bending plate 441, the oblique tongue limiting assembly rotates to the reset position under the action of the reset rotation force of the reset spring 445, meanwhile, the oblique tongue is in the position extending out, the sleeve 443 supports the oblique tongue guide block 415, the oblique tongue cannot move backwards, at the moment, the two oblique tongue blocks 411 are completely opened, when the door is rocked or impacted by external force, the two oblique tongue blocks 411 bear the impact force of the door frame firstly, the main lock tongue assembly is protected, and the stability of the electric lock body is improved.

The telescopic double-trigger detection assembly 6 is a detection mechanism for the door opening and closing state, and is also a mechanism for providing a door lock locking signal for the circuit board assembly 2. As shown in fig. 7, the telescopic dual-trigger detection assembly 6 includes: two identical trigger detection tongues; the trigger detection tongue includes: triangular tongue 611, connecting rod 612, return spring 613, fixed rivet 614 and detection guide plate 615. The detection guide plate 615 is fixed inside the lock shell 1, one end of the connecting rod 612 is connected with a triangular tongue 611 positioned outside the lock shell 1 through a fixing rivet column 614, the other end of the connecting rod passes through a guide hole on the detection guide plate 615 and is in sliding fit with the guide hole on the detection guide plate 615, a return spring 613 is sleeved outside the connecting rod 612, one end of the return spring 613 is abutted against a protrusion at the front end of the connecting rod 612, the other end of the return spring is abutted against the detection guide plate 615, a triangular tongue extending hole is formed in a position, corresponding to one of the trigger detection tongues, on the door frame, and when the door body is in a closed state, the triangular tongue 611 in the trigger detection tongue corresponding to the triangular tongue extending hole extends into the triangular tongue extending hole, namely the trigger detection tongue is in an extending state, and the triangular tongue 611 in the other trigger detection tongue is in a retracting; if the door is in a virtual covering state, the trigger detection tongues corresponding to the triangular tongue insertion holes cannot be inserted into the triangular tongue insertion holes, and at the moment, the two trigger detection tongues are in an extension state. From this through two switch door state detection sensors (can be photoelectric switch or position sensor) detect two respectively and trigger the flexible state that detects tongue 61, two switch door state detection sensors link to each other with circuit board assembly, signal routing who detects gives circuit board assembly, judge the switch door state by circuit board assembly according to received detected signal, only detect one of tongue 61 for the state of stretching out when two triggers, another one is when withdrawing the state, just judge the door body and be the closed condition, can solve well when the door is in the virtual state of covering or personnel's mistake touches the state from this, the lock body misdetection closes and locks for the door, the security and the stability of electric lock body have been improved.

The circuit board assembly is used for receiving detection signals of a photoelectric switch and signals of two door opening and closing state detection sensors in the main lock tongue assembly and controlling the dual-drive assembly 5, so that the lock body is automatically opened and closed. The lock body is placed in to the circuit board subassembly inside, includes: the main control circuit board 21 and the detection circuit board 22, wherein detection circuit board 22 and flexible two detection component that trigger cooperate, main control circuit board 21 and the cooperation of main spring bolt subassembly can improve the integrated level of lock body, have realized the transmission that the switch door detected and control command on the lock body for after the front panel falls, personnel still can't open the door through main control circuit board, have improved the security of lock body.

The electric lock body is powered by a battery, when two door opening and closing state detection sensors detect that a trigger detection tongue in a telescopic double-trigger detection assembly 6 is in a telescopic state, a main control circuit board 21 controls a main motor 51 or/and an auxiliary motor 52 in a double-drive assembly 5 to rotate, power is transmitted to a control button 32 from a fourth reduction gear 537 through a duplex straight gear reduction box, the control button 32 rotates to drive a main lock tongue to extend out, and meanwhile, an inclined tongue limiting block returns to the original position to prop against the inclined tongue, so that the inclined tongue cannot move backwards, and the main lock tongue assembly 3 is protected; when a door opening signal is given to the lock body from the outside, the main control circuit board controls the main motor 51 or the auxiliary motor 52 in the dual-drive assembly 5 to rotate reversely, power is transmitted to the control button 32 from the fourth reduction gear 537 through the duplex straight gear reduction box, the control button 32 rotates reversely to drive the main lock tongue 31 to withdraw, and drive the latch bolt limiting block to rotate, so that the latch bolt can not push against the latch bolt, and the latch bolt can freely move in a longitudinal direction in a telescopic manner, so that the door can be opened without screwing a handle.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An electric lock body, comprising: the lock comprises a lock shell (1), and a circuit board assembly (2), a main bolt assembly (3), a dual-drive assembly (5) and a telescopic dual-trigger detection assembly (6) which are arranged in the lock shell (1);

double drive subassembly (5) are used for providing drive power for the flexible of main spring bolt subassembly (3), include: the lock comprises a main motor (51), an auxiliary motor (52) and a speed reducing mechanism, wherein the main motor (51) and the auxiliary motor (52) are respectively fixed in a lock shell (1) through motor fixing discs, and output shafts of the main motor (51) and the auxiliary motor (52) are fixedly connected with driving gears; the two driving gears transmit power to the main bolt assembly (3) through the speed reducing mechanism respectively;

the main bolt assembly (3) comprises: the main bolt, the control button (32) and the guide plate (35); one end of the main bolt in the moving direction is a lock head (311), and a lock head hole for enabling the lock head (311) to extend out or retract into the lock shell (1) is formed in the lock shell (1) at a position corresponding to the lock head (311); the control button (32) is connected with a speed reducing mechanism in the dual-drive assembly (5) and rotates around the axis of the dual-drive assembly (5) under the drive of the dual-drive assembly; a thrust rod (323) is arranged on the outer circumference of the control button (32), the end of the thrust rod (323) is positioned in a thrust groove (3125) arranged on the main bolt, when the control button (32) rotates, the thrust rod (323) pushes the main bolt to extend or retract through the thrust groove (3125); the guide post (3121) on the main bolt is in sliding fit with a limit guide groove (351) on a guide plate (35) fixed in the lock shell (1), and the limit guide function is realized on the movement of the main bolt;

the telescopic double-trigger detection assembly (6) comprises two telescopic trigger detection tongues; a detection hole is formed in the position, corresponding to one of the trigger detection tongues, of the door frame; when the door body is in a closed state, the trigger detection tongue corresponding to the detection hole extends into the detection hole, namely the trigger detection tongue is in an extending state, and the other trigger detection tongue is extruded by the door frame and retracts into the lock shell (1); a state detection sensor for detecting the extension state of each trigger detection tongue is arranged in the lock shell corresponding to each trigger detection tongue;

the circuit board assembly (2) includes: a main control circuit board (21) and a detection circuit board (22); the detection circuit board (22) is connected with the two state detection sensors and is used for receiving signals detected by the two state detection sensors so as to realize detection of the opening/closing state of the door body; a main motor (51) and an auxiliary motor (52) in the dual-drive assembly (5) are controlled by the main control circuit board (21); when the detection circuit board (22) judges that the door body is in a closed state, a door closing instruction is sent to the main control circuit board (21), and the main control circuit board (21) controls a main motor (51) or/and an auxiliary motor (52) in the dual-drive assembly (5) to start.

2. An electrically powered lock body according to claim 1, further comprising a latch bolt assembly (4); the latch tongue assembly (4) comprises: the latch bolt and the latch bolt limiting component; the latch bolt can extend out or retract into the lock shell (1), and when the latch bolt extends in place, the thickness of the end, extending out of the lock shell (1), of the latch bolt is larger than that of the lock head (311);

the latch bolt limiting assembly is linked with the main lock bolt assembly (3), and when the main lock bolt extends out, the latch bolt limiting assembly limits the latch bolt so that the latch bolt is kept in a state of extending in place; when the main bolt retracts into the lock shell (1), the limit of the latch bolt is released by the latch bolt limiting assembly, and the latch bolt can freely extend out or retract.

3. An electrically powered lock as defined in claim 2, wherein said latch bolt includes: the device comprises an oblique tongue block (411), an oblique tongue fixing block (412), a connecting column (413), a compression spring (414) and an oblique tongue guide block (415); the two axial ends of the connecting column (413) are respectively and fixedly connected with a latch bolt fixing block (412) and a latch bolt guide block (415), and the axial direction of the connecting column (413) is parallel to the moving direction of the main latch bolt; the compression spring (414) is coaxially sleeved on the outer circumference of the connecting column (413), one end of the compression spring is abutted against the connecting column guide plate (42), and the other end of the compression spring is abutted against the latch bolt fixing block (412); the connecting column guide plate (42) is fixed inside the lock shell (1), and a U-shaped groove which is used for enabling the connecting column (413) to penetrate through and is in sliding fit with the connecting column (413) is processed on the connecting column guide plate;

cylindrical protrusions (4121) are arranged at two opposite ends of the oblique tongue fixing block (412) in the direction perpendicular to the axis of the connecting column (413), and the two oblique tongue blocks (411) are coaxially and fixedly installed at two ends of the oblique tongue fixing block (412) through the cylindrical protrusions (4121); the two inclined tongue blocks (411) are arranged along the thickness direction of the door body; the end face of each oblique tongue block (411) opposite to the oblique tongue fixing block (412) is an inner end face of the oblique tongue block, the end face opposite to the inner end face is an outer end face of the oblique tongue block, a limiting circular arc table (4112) is designed on the outer end face of each oblique tongue block (411), each limiting circular arc table (4112) comprises an arc end face and a plane end face, the plane end faces of the limiting circular arc tables are parallel to and contact with the inner surface of the lock shell (1), and when the oblique tongues extend out to the right position, the size of the two oblique tongue blocks (411) along the thickness direction of the door body is larger than the thickness of the lock head (311);

the two latch bolt guide plates (43) are oppositely and fixedly arranged, rectangular grooves which are parallel to the axial direction of the connecting column (413) are processed on the two latch bolt guide plates (43) to serve as guide grooves, bosses at the upper end and the lower end of the latch bolt guide block (415) are respectively positioned in the guide grooves on the two latch bolt guide plates (43), and the guide grooves are used for guiding and limiting the movement of the connecting column (413);

the oblique tongue limiting block assembly is arranged at the end where the oblique tongue guiding block (415) is located, and when the oblique tongue limiting block assembly props against the oblique tongue guiding block (415), the oblique tongue is limited.

4. An electrically powered lock as defined in claim 3, wherein said deadbolt limiting assembly comprises: the bending plate (441), the top shaft (442), the sleeve (443), the stop rotating shaft (444), the return spring (445) and the spring limiting column (446); the bending plate (441) comprises an upper plate and a lower plate which are formed after bending, the sleeve (443) is arranged between the upper plate and the lower plate of the bending plate (441), and the top shaft (442) penetrates through the upper plate and the lower plate to fix the sleeve (443) between the upper plate and the lower plate of the bending plate (441);

the stop block rotating shaft (444) penetrates through the bending plate (441) and is fixed in the lock shell (1), and the bending plate (441) can rotate around the stop block rotating shaft (444); the spring limiting column (446) is fixed in the lock shell (1), the return spring (445) is sleeved on the part, located between the upper plate and the lower plate of the bending plate (441), of the stop block rotating shaft (444), one end of the return spring is fixed on the spring limiting column (446), and the other end of the return spring is fixed on the stop block rotating shaft (444); the relative position of the stop block rotating shaft (444) and the spring limiting column (446) is ensured, when the return spring (445) is in the return position, the sleeve (443) props against the latch bolt guide block (415) to limit the latch bolt;

a convex limiting table (3124) is arranged at a position corresponding to the bending plate (441) on the main bolt, when the main bolt is retracted into the lock case (1), the limiting table (3124) butts against the bending plate (441), and at the moment, the return spring (445) is twisted to have a return torque; when the main bolt extends to the right position, the limiting table (3124) releases the limiting of the bending plate (441), and the bending plate (441) rotates to a reset position around the stop block rotating shaft (444) under the action of the reset spring (445).

5. An electrically powered lock as defined in claim 1, wherein said trigger detection tongue comprises: the device comprises a triangular tongue (611), a connecting rod (612), a return spring (613) and a detection guide plate (615); the detection guide plate (615) is fixed inside the lock shell (1), one end of the connecting rod (612) extends out of the lock shell (1) and is connected with the triangular tongue (611), and the other end of the connecting rod penetrates through a guide hole in the detection guide plate (615) and is in sliding fit with the guide hole in the detection guide plate (615); when the triangular tongue (611) is pressed by a door frame, the triangular tongue can retract to the inside of the lock shell (1); reset spring (613) suit is in connecting rod (612) outside, reset spring (613) one end is contradicted with the arch on connecting rod (612), and the other end is contradicted with detection deflector (615).

6. An electrically operated lock as claimed in claim 1, 2 or 5, wherein said reduction mechanism is a twin gear reduction gearbox comprising: a first duplex spur gear (534), a second duplex spur gear (535), a third duplex spur gear (536), and a fourth reduction gear (537); wherein the first duplex spur gear (534), the second duplex spur gear (535), and the third duplex spur gear (536) each have a large tooth face and a small tooth face that are coaxially arranged; two drive gears mesh with the big flank of first duplicate spur gear (534) respectively, the little flank of first duplicate spur gear (534) meshes with the big flank of second duplicate spur gear (535), the little flank of second duplicate spur gear (535) meshes with the big flank of third duplicate spur gear (536), the little flank of third duplicate spur gear (536) with fourth reduction gear (537) meshing, fourth reduction gear (537) with main spring bolt subassembly (3) link to each other, with power transmission to main spring bolt subassembly (3).

7. An electrically operated lock body as claimed in claim 1, 2 or 5, characterised in that a torsion spring (36) is provided in the main bolt assembly (3) for position retention when the main bolt is extended or retracted into position; a strip-shaped groove is formed in the main spring bolt along the moving direction of the main spring bolt, and a connecting column fixed inside the lock shell (1) is in sliding fit with the strip-shaped groove; one end of the torsion spring (36) is connected with the connecting column, and the other end of the torsion spring is connected with a thrust rod (323) on the control button (32); when the thrust rod (323) pushes the main bolt to extend to the right position or retract to the right position, the torsion spring (36) is driven to twist, so that the main bolt has reset torque.

8. An electric lock body according to claim 1, 2 or 5, characterized in that the control knob (32) is provided with a profile hole along its axial direction for engagement with an external rotary tool, and the control knob (32) is provided at its axial ends with an opening plate (33) and a sealing plate (34), respectively; when the door is installed, the opening plate (33) is positioned at the inner end of the door, and does not shield the special-shaped hole (322); the sealing plate (34) is arranged at the outer side end of the door and shields the special-shaped hole (322).

9. An electric lock body as claimed in claim 1, 2 or 5, characterized in that a hold-down post (3122) is fixed on the main bolt, one end of the hold-down post (3122) is fixed on the main bolt, and the other end is pressed against the inner surface of the lock shell (1) and is in sliding fit with the inner surface of the lock shell (1); when the main bolt moves, the pressing column (3122) moves along with the main bolt.

10. An electrically operated lock as claimed in claim 1, 2 or 5, wherein a detection plate (313) is fixed to said main bolt, and wherein photoelectric switches are provided on said lock housing (1) at positions corresponding to positions of the detection plate (313) when the main bolt is extended to and retracted to the proper position, respectively, and both of the photoelectric switches are electrically connected to the circuit board assembly for transmitting the detected signal to the circuit board assembly.

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