CN209924636U - Lock body with novel lock tongue structure - Google Patents

Abstract

The utility model relates to a lock body with a novel spring bolt structure, which comprises a lock shell, a spring bolt driving plate and a spring bolt, wherein the spring bolt can extend out or retract in a spring bolt hole; the lock tongue comprises a columnar tongue and a hook-shaped tongue, the columnar tongue is arranged on the lock tongue driving plate, the tail end of the hook-shaped tongue is rotatably arranged on the lock shell or a stand column connected with the lock shell, the lock tongue driving plate is provided with a transmission column, and the transmission column is used for driving the hook-shaped tongue to swing in or out of a lock tongue hole; a first driving boss and a second driving boss are arranged on the bolt driving plate; the lock shell is provided with a shifting fork and three circles of special-shaped springs, the lock shell is provided with a handle, the handle is connected with the shifting fork, and a withdrawing dead point part is arranged on the first driving boss; the lock comprises a lock body, a lock bolt driving plate, a lock shell, a three-ring special-shaped spring, a shifting fork, a spring support, a spring, a sliding groove, a guide post, a spring, a; the first driving boss and the second driving boss are used for pushing the lock tongue driving plate and the lock tongue to move, and the three circles of special-shaped springs are used for pushing the shifting fork to be combined with the dead point part.

Description

Lock body with novel lock tongue structure

Technical Field

The invention relates to an access control device, in particular to a lock body with a novel bolt structure.

Background

The lock realizes the locking or unlocking of the door leaf through the movement of a lock tongue arranged on the lock. Chinese utility model patent CN200420038523.7 discloses an electronic door lock, which comprises a housing 10 and a bolt 20 arranged on the housing 10 for telescopic movement. A shifting groove 23 is arranged on the bolt 20, and a speed reducing motor 30 is arranged beside the bolt 20. An output shaft of the speed reducing motor 30 is fixedly connected with a driving bevel gear 51, the driving bevel gear 51 is meshed with a driven bevel gear 52, a shifting rod 80 is fixed on the upper portion of the driven bevel gear 52 through a nut 53, and the free end of the shifting rod 80 extends into the shifting groove 23. When the speed reducing motor 30 is started, the driven bevel gear 52 can drive the shift lever 80 to rotate, and the shift lever 80 is combined with the shift groove 23 to drive the lock tongue 20 to move telescopically. The reduction motor 30, the drive bevel gear 51, the driven bevel gear 52 and the shift lever 80 constitute the automatic transmission mechanism. The housing 10 is further provided with a manual switch 60, and the manual switch 60 is provided with a toggle handle directly connected with the locking bolt 20, so that the locking bolt 20 can be driven to move telescopically when the manual switch 60 is toggled. The manual switch 60 constitutes the manual transmission mechanism.

Disclosure of Invention

The electronic door lock in CN200420038523.7 has the bolt not being positioned effectively after being extended, and is very easy to retract into the lock body after being subjected to axial knocking force, and the anti-theft performance is not ideal. Aiming at the defects of the prior art, the invention improves the internal structure of the lock body, and provides the lock body with a novel bolt structure, which comprises a lock shell, a bolt driving plate and a bolt, wherein the bolt driving plate is positioned on the inner side of the lock shell and can move back and forth; the lock bolt is characterized by comprising a columnar bolt and a hook-shaped bolt which are arranged on the left side and the right side respectively, wherein the columnar bolt is fixedly connected to the lock bolt driving plate, the hook-shaped bolt is in a crank arm shape, the tail end of the hook-shaped bolt is rotatably arranged on the lock shell or an upright post connected with the lock shell, a long groove is arranged at a middle corner, a transmission column is further arranged on the lock bolt driving plate, the transmission column extends into the long groove, and the transmission column is used for driving the hook-shaped bolt to swing in or out of a lock bolt hole when the lock bolt driving plate moves back and forth; a first driving boss and a second driving boss which are arranged in a front-back separated mode are arranged on the bolt driving plate; a shifting fork and three circles of special-shaped springs are further arranged on the inner side of the lock shell, a rotating handle is arranged on the outer side of the wall body of the lock shell, a handle middle shaft connected with the rotating handle penetrates through the lock shell and is fixedly connected with the fixed end of the shifting fork, the free end of the shifting fork is located between the first driving boss and the second driving boss, and a withdrawing dead point part used for being combined with the free end of the shifting fork to prevent the lock tongue driving plate from withdrawing to withdraw the lock tongue is arranged on the first driving boss; the lock bolt driving plate is provided with a sliding groove, the sliding groove is arranged along the sliding direction of the lock bolt driving plate, a guide post with a threaded hole at the top end is arranged on the lock shell, a step is arranged on the guide post, the guide post not only extends into the sliding groove but also axially limits the lock bolt driving plate through the step, one end of the three-ring special-shaped spring is screwed into the threaded hole by virtue of a screw to be connected onto the guide post, and the other end of the three-ring special-shaped spring is connected onto the free end of the shifting fork; first drive boss is located the left side of shift fork, first drive boss be used for with forward rotation the shift fork combines to promote the spring bolt drive plate reaches the spring bolt is to the direction of stretching out removal, three rings of abnormal shape springs are used for pushing away to swing to the left side position the shift fork lets its free end keep with withdraw dead point portion on the first drive boss and combine, second drive boss is located the right side of shift fork, second drive boss be used for with reverse rotation the shift fork combines to promote the spring bolt drive plate reaches the spring bolt is to withdrawing the direction removal.

Wherein, the columnar bolt is fixedly connected on the bolt driving plate. The columnar tongue and the bolt driving plate are of a split structure and are fixedly connected to the bolt driving plate through riveting or welding, and the columnar tongue and the bolt driving plate are in hard connection, move back and forth along with the bolt driving plate and are positioned along the sliding direction of the bolt driving plate and then are positioned together.

The tail end of the hook-shaped tongue is rotatably arranged on the lock shell or an upright post connected with the lock shell. The above feature can be interpreted that the hook-shaped tongue is rotatably provided in the lock case through its end fixed point. The specific implementation structure can be that the tail end of the hook-shaped tongue is directly and rotatably arranged on the lock shell or is indirectly and rotatably arranged on the lock shell through the upright post, and the upright post can be a protruding part which is integrally formed at the tail end of the lock shell or the hook-shaped tongue.

The lock bolt driving plate is provided with a hook-shaped bolt hole, and the hook-shaped bolt hole is arranged in the lock bolt hole. Therefore, when the lock tongue driving plate moves back and forth, the lock tongue driving plate not only can drive the columnar tongue to extend or retract, but also can drive the hook-shaped tongue to swing in or out.

The lock is characterized in that a rotating handle is arranged on the outer side of the wall body of the lock shell, the position of the rotating handle is defined by the characteristics, the rotating handle is arranged outside the lock shell, and the rotating handle can be directly operated by a human hand. The rotary handle is a control piece for controlling the action of the central shaft of the handle, and the shape of the rotary handle can be various, such as a handle or a knob.

The middle shaft of the handle connected with the rotating handle penetrates through the lock shell to be fixedly connected with the fixed end of the shifting fork. Thus, when the rotating handle is rotated radially, the shift fork can be driven to rotate radially together. The above feature further defines that a fixed connection structure is arranged between the shifting fork and the handle middle shaft, specifically, the shifting fork and the handle middle shaft are of an integrally formed structure, at this time, the handle middle shaft and the rotating handle are of a split structure, and the handle middle shaft and the rotating handle can be connected together in a screw, insertion and other modes. Or, the shifting fork and the handle middle shaft can be in a split structure, and the shifting fork and the handle middle shaft can be connected together in a screw mode, an inserting mode and the like. At this time, the middle shaft of the handle and the rotating handle can be of a split structure or an integrated structure. No matter what kind of structure is between the shift fork and the handle axis, as long as can let there is radial linkage relation between the shift fork and the handle axis. The dial-up connection means that the two can be in transmission connection when transmitting torque, and one side can transmit torque and mechanical control signals to the other side in a rotating and dial mode. For this reason, the two parts to be dialed up may be connected only during torque transmission, or may be always connected by leaning, hinged, etc., and the specific dialing up scheme may be set according to the needs of the site.

The withdrawing dead point part on the first driving boss can be combined with the free end of the shifting fork to prevent the locking bolt driving plate from retreating to withdraw the locking bolt, but the swinging of the shifting fork is not hindered, and the shifting fork can continuously swing across the withdrawing dead point part under the driving of the rotating handle.

Wherein, set up the step on the guide post. The step can be formed in various forms, for example, by a radial collar formed integrally with the guide post, or by a positioning sleeve that is threaded onto the guide post and is independent of the guide post.

The guide post not only extends into the sliding groove, but also axially limits the bolt driving plate through the step. Therefore, the combination of the guide post and the sliding groove is favorable for effectively guiding the sliding of the lock tongue driving plate, and meanwhile, the lock tongue driving plate is reduced or prevented from jumping up and down in the axial direction of the guide post.

Wherein the three-turn shaped spring is a shaped spring having a center spring turn and resilient legs extending from the center spring turn. The elastic legs are configured according to the requirement of connection, and may be, for example, circular or bent.

Wherein one end of the three-turn special-shaped spring is screwed into the threaded hole by means of a screw to be connected to the guide post, and the other end of the three-turn special-shaped spring is connected to the free end of the shifting fork. Thus, one end of the three-coil special-shaped spring is stably positioned by being connected to the guide post and does not move along with the bolt driving plate and the shifting fork, the other end of the three-ring special-shaped spring generates elastic deformation along with the swing of the free end of the shifting fork and positions the free end of the shifting fork combined on the first driving boss or the second driving boss by means of jacking force generated by the elastic deformation so that the free end of the shifting fork can not leave the first driving boss or the second driving boss at will, so that the three-ring special-shaped spring can push the shifting fork at the left position to ensure that the free end of the shifting fork is kept combined with the withdrawal dead point part on the first driving boss, and at the moment, even if the lock tongue bears the axial knocking force, the shifting fork and the withdrawing dead point part are combined to form self-locking, and the lock tongue cannot be withdrawn easily.

According to the technical scheme, the beneficial technical effects of the invention are as follows:

1. the columnar tongue and the hook-shaped tongue are both combined with the lock tongue driving plate and move along with the lock tongue driving plate, namely, the movement of the columnar tongue and the hook-shaped tongue is controlled by controlling the movement of the lock tongue driving plate, so that the control structure is simple.

2. The three-ring special-shaped spring is used for pushing the shifting fork which swings to the left position to enable the free end of the shifting fork to be combined with the withdrawing dead center part on the first driving boss. Therefore, when the first driving boss and the forward rotating shifting fork are combined to push the lock tongue driving plate to enable the lock tongue to extend out, the shifting fork is kept combined with the withdrawing dead point part under the pushing action of the three circles of special-shaped springs, and the lock tongue driving plate bearing axial knocking force is difficult to enable the first driving boss to push the shifting fork to retreat. But the shift fork can be easily driven to retreat away from the withdrawal dead point portion when the swing handle is rotated. The combination of the shifting fork and the first driving boss improves the self-locking function of the lock body, and the difficulty of unlocking by illegal molecule knocking is greatly increased.

3. As the handle middle shaft connected with the rotating handle penetrates through the lock shell and is fixedly connected with the fixed end of the shifting fork, the free end of the shifting fork is positioned between the first driving boss and the second driving boss. Therefore, when the rotating handle rotates forwards and reversely, the lock tongue driving plate and the lock tongue can be toggled to move back and forth by means of the shifting fork. The first driving mode of the lock body is a manual driving mode, and the rotary handle, the handle middle shaft and the shifting fork form a manual driving mechanism.

The lock comprises a lock shell, a driving motor, a rotating disc and a first protruding arm, wherein the driving motor and the rotating disc are arranged on the inner side of the lock shell and driven by the driving motor to rotate; a handle middle shaft connected with the rotating handle penetrates through the lock shell and is connected with the shifting fork through a disc through hole, the handle middle shaft is arranged in the disc through hole and can freely and radially rotate, a fixed end of the shifting fork is fixedly connected with the handle middle shaft, a free end of the shifting fork extends out of the upper portion of the rotating disc and is connected with the lock tongue driving plate in a shifting mode, the shifting fork is arranged between the first protruding arm and the second protruding arm, a distance for avoiding the swing amplitude of the shifting fork is reserved between the first protruding arm and the second protruding arm, the first protruding arm is arranged on the right side of the shifting fork, the first protruding arm is used for driving the shifting fork to swing in the forward direction and further drive the lock tongue driving plate and the lock tongue to extend out when the driving motor drives the rotating disc to rotate in the forward direction, the second protruding arm is arranged on the left side of the shifting fork, and the second protruding arm is used for driving the shifting fork to swing in the reverse And driving the bolt driving plate and the bolt to retract.

The rotating disc is provided with a first protruding arm and a second protruding arm, the first protruding arm and the second protruding arm can be arranged at the head end and the tail end of a protruding rib which is continuously arranged on the rotating disc, and the first protruding arm and the second protruding arm are connected into a whole in the radial direction. The first and second projection arms may also be two projections arranged at a distance from each other provided on the rotary disc. The first and second projecting arms may be integrally formed with the rotary disk, or may be integrally formed with a separate member having a separate structure from the rotary disk, the separate member being radially interlocked with the rotary disk.

Wherein the handle middle shaft can freely and radially rotate in the disc through hole. The characteristics define the transmission relation between the handle middle shaft and the rotating disc, and the handle middle shaft cannot drive the rotating disc to rotate radially greatly when rotating radially, or the resistance which is applied to the handle middle shaft by the rotating disc and blocks the rotation of the handle middle shaft is very little or no. Of course, when the central axis of the handle rotates radially to press the shifting fork against the first protruding arm or the second protruding arm, the rotation of the central axis of the handle may drive the rotating disc to rotate without any other obstruction.

The shifting fork is located between the first protruding arm and the second protruding arm, and a distance avoiding the swing amplitude of the shifting fork is reserved between the first protruding arm and the second protruding arm. Thus, when the first and second projecting arms are stationary in place (this position is defined below as the home position for ease of discussion), the first and second projecting arms do not prevent the fork from swinging within its nominal range of swing, i.e., the fork still has sufficient room to swing to drive the bolt driving plate back and forth to retract the bolt to the unlocked position and extend the bolt to the locked position. Secondly, the swing amplitude of the shifting fork is a rated swing range required by the shifting fork in the process of driving the lock bolt driving plate to move back and forth so as to enable the lock bolt to retract to the unlocking position and extend to the locking position.

The first protruding arm is located on the right side of the shifting fork, the first protruding arm is used for acting as the driving motor drives the rotating disc to rotate in the forward direction, the shifting fork can be pushed to swing in the forward direction to drive the lock bolt driving plate and the lock bolt to extend out, the second protruding arm is located on the left side of the shifting fork, and the second protruding arm is used for acting as the driving motor drives the rotating disc to rotate in the reverse direction, the shifting fork can be pushed to swing in the reverse direction to drive the lock bolt driving plate and the lock bolt to retract. The second driving mode of the intelligent lock is defined by the characteristics, and is an automatic driving mode, and the first protruding arm, the second protruding arm, the rotating disc, the shifting fork and the driving motor form an automatic driving mechanism. When the driving motor works to drive the rotating disc to rotate positively and negatively respectively, the first protruding arm and the second protruding arm which are respectively arranged on the left side and the right side of the shifting fork can respectively push the shifting fork to swing positively and negatively so as to drive the lock bolt driving plate and the lock bolt to move back and forth, and therefore unlocking and locking operations of the lock body are completed. It can be seen that the manual drive and the automatic drive have separate control signal inputs, but a common power output, namely the fork.

According to the technical scheme, the beneficial technical effects of the invention are as follows:

1. because the handle middle shaft connected with the rotating handle penetrates through the lock shell and the disk through hole to be connected with the shifting fork, a first protruding arm and a second protruding arm are arranged on the rotating disk, and the shifting fork is positioned between the first protruding arm and the second protruding arm. Therefore, the driving piece for driving the shifting fork to move, namely the handle middle shaft, the first protruding arm and the second protruding arm can be gathered together to form a shifting fork driving module, the manual driving mechanism and the automatic driving mechanism which are formed by the driving piece and the handle middle shaft have independent control signal input ends respectively, but have a uniform power output end, namely the shifting fork, the structure is compact, and the occupied installation space is small.

2. The central shaft of the handle can freely and radially rotate in the disk through hole, and a space for avoiding the swing amplitude of the shifting fork is reserved between the first protruding arm and the second protruding arm. Therefore, the handle middle shaft penetrates through the disc through hole to be arranged in the rotating disc, so that the handle middle shaft and the rotating disc can share an installation space, the resistance of the rotating disc to the radial rotation of the handle middle shaft can be reduced to the maximum extent, and the adverse effect of the rotating disc on the rotation of the handle middle shaft is weakened. Under the condition that the rotating disc is in a rest state and the first protruding arm and the second protruding arm on the rotating disc are stopped at original positions, the shifting fork can be freely driven by the middle shaft of the handle to swing back and forth, transmission parts which have transmission relation with the rotating disc, such as the rotating disc, the driving motor and the like, do not need to be driven to act greatly at the same time, even the transmission parts are not driven to act, and when the rotating handle is rotated, the rotating handle is lighter in hand feeling and good in application experience.

According to a further technical scheme, a concave pit is formed in the outer side face of the wall body of the lock shell, and the rotating handle is arranged in the concave pit. In this way, the rotating handle is positioned by the recess.

The further technical scheme can also be that a plastic space ring is arranged between the rotating handle and the vertical wall surface of the pit. Therefore, the plastic space ring is beneficial to reducing the friction force between the rotating handle and the vertical wall surface of the pit, and can also be used as a decorative frame of the rotating handle to beautify the appearance of the intelligent lock.

The technical scheme includes that the lock tongue driving plate is provided with a signal post for representing the position of the lock tongue driving plate, a circuit board is arranged above the lock tongue driving plate, the circuit board is provided with a first sensor and a second sensor which can sense the signal post at different positions, the first sensor and the second sensor are arranged in front and back and respectively correspond to a first position where the signal post moves forwards and a second position where the signal post moves backwards, and the driving motor is connected with the circuit board. Therefore, the first sensor and the second sensor can acquire the position information of the lock tongue driving plate and then can be used, and therefore the safety of the intelligent lock is improved, and the humanized management of the lock is achieved. For example, the extension length of the bolt is accurately deduced according to the above to judge whether the bolt is locked in place or not, the locking condition of the bolt is monitored, and if the bolt is not locked in place, an alarm can be given out to remind a user. In addition, the circuit board sets up the top of spring bolt drive plate can further reduce and occupy installation space.

The driving motor is also used for driving the rotating disc to rotate so as to enable the first protruding arm and the second protruding arm to retreat and further reserve a retreating space for the retreating and rotating of the shifting fork; the lock further comprises a circuit board arranged in the lock shell, a third sensor capable of sensing the first protruding arm or the second protruding arm is further arranged on the circuit board, the third sensor is arranged at the position where the first protruding arm or the second protruding arm retreats to the tail section, and the third sensor is used for transmitting a signal whether the first protruding arm or the second protruding arm retreats to the tail section or not to a central controller connected with the circuit board.

The position of the first protruding arm or the second protruding arm when retreating to the tail section is the position of the first protruding arm or the second protruding arm when retreating to the position enough to reserve a retreating space for the retreating rotation of the shifting fork. When the first protruding arm and the second protruding arm retreat to the tail section, the first protruding arm and the second protruding arm cannot block the swing of the shifting fork within the rated swing amplitude.

The backward movement is a movement direction in which the defined feature is opposite to a previous movement direction, and may be a movement direction in which the defined feature is located when the rotating disc rotates in the forward direction, or may be a movement direction in which the defined feature is located when the rotating disc rotates in the reverse direction. For example, if the direction of movement of the fork is defined as forward, then the direction of movement of the rotating disc and the fork is defined as backward. And vice versa.

The third sensor is used for transmitting a signal whether the first projection arm or the second projection arm is retreated to the tail section or not to a central controller connected with the circuit board. Therefore, after the central controller knows that the first protruding arm and the second protruding arm retreat to the tail section, the driving motor stops working to enable the first protruding arm and the second protruding arm to stay at the tail section, otherwise, the driving motor continues working to drive the first protruding arm and the second protruding arm to retreat. Therefore, the technical scheme provides an effective technical basis for realizing the automatic resetting of the first protruding arm and the second protruding arm.

Drawings

Fig. 1 is a schematic perspective view of an intelligent lock applying the technical solution of the present invention;

fig. 2 is a schematic perspective view of the U-shaped connecting plate 3;

fig. 3 is a schematic perspective view of another view direction of the U-shaped connecting plate 3;

fig. 4 is a schematic perspective view of the base plate 2;

fig. 5 is a schematic perspective view of the first cushion 4;

FIG. 6 is a schematic perspective view of the front view of the intelligent lock;

FIG. 7 is a schematic sectional view taken along the line A-A in FIG. 6;

FIG. 8 is an enlarged view of the portion D of FIG. 7;

FIG. 9 is a schematic cross-sectional view taken along line B-B of FIG. 6;

FIG. 10 is an enlarged view of section E of FIG. 9;

FIG. 11 is a schematic cross-sectional view taken along line C-C of FIG. 6;

figure 12 is an exploded view of the inner lock body;

figure 13 is a schematic view of the internal structure of the inside lock body

FIG. 14 is a schematic view of the first and second projection arms 521, 522 in a reset state;

fig. 15 is an assembly structure diagram of the bolt and the bolt driving plate;

fig. 16 is a schematic flow chart of the application of the technical solution of the present invention.

Detailed Description

The structure of the intelligent lock applying the technical scheme of the invention is further explained with the accompanying drawings.

As shown in fig. 1, 2, 3 and 4, the intelligent lock is a lock body adopting a hanging positioning, and comprises an inner lock shell 1, an outer lock shell 10, a bottom plate 2 and a U-shaped connecting plate 3 capable of hanging on a door leaf a. The inner lock shell 1 and the outer lock shell 10 are respectively provided with a containing cavity for storing lock tongues (81, 82), a lock tongue driving plate 88, an electric control device and other members for realizing locking and control functions. The inner lock shell 1 is a lock shell which is arranged on the inner side of the door leaf a and is positioned on one side of the indoor space, and the outer lock shell 10 is a lock shell which is arranged on the outer side of the door leaf a and is positioned on one side of the outdoor space.

As shown in fig. 4, the bottom plate 2 includes a bottom plate main body 20 and a pair of right-angled bent edges (21, 21a) extending from one side edge position of the bottom plate main body 20, the bottom plate main body 20 is used for being mounted at a position between the inner connecting plate 31 and the door leaf a, and the bent edges (21, 21a) are used for abutting against the side edge of the door leaf a to assist in positioning the position of the bottom plate main body 20 in the width direction of the door leaf a. The bottom plate main body 20 is provided with two scales (23, 23a) which are vertically separated, and the scales (23, 23a) are aligned with the scales arranged on the door frame, so that the position of the bottom plate 2 in the height direction of the door leaf a can be positioned in an auxiliary manner. The height of the bending edge (21, 21a) is smaller than the distance between the inner connecting plate 31 and the outer connecting plate 32 of the U-shaped connecting plate 3 which will be discussed below. The bent edges (21, 21a) are ear-shaped at the side edge of the bottom plate main body 20 and are respectively arranged at the upper end and the lower end of the side edge of the bottom plate main body 20. That is, the bent edges (21, 21a) are not continuously provided on the side edges of the bottom plate main body 20, and the intermediate region between the adjacent bent edges (21, 21a) is formed in a vacant shape. This reduces the weight of the base plate 2, so that the base plate 2 is as light as possible, which is advantageous for providing the mounting stability of the base plate 2. In addition, the bent edges (21, 21a) of the base plate 2 may also be walls arranged in series. An adhesive layer 24 is arranged on an outer side surface of the bottom plate main body 20 facing the door leaf a surface, and the adhesive layer 24 is used for adhering the bottom plate 2 to the door leaf a surface, so that the bottom plate 2 can be stably positioned by adhering the adhesive layer 24 to the door leaf a, and a positioning basis is provided for hanging the U-shaped connecting plate 3 on the door leaf a. Therefore, the door leaf a can omit a through hole for positioning the bottom plate 2, and the damage of the door leaf a caused by the through hole can be reduced. The bottom plate main body 20 is provided with a plurality of bottom plate screw holes 22, and in the present embodiment, 5 bottom plate screw holes 22 are provided, and only one of them is shown in the figure for the sake of simplicity of the drawing.

The U-shaped connecting plate 3 comprises an inner connecting plate 31, an outer connecting plate 32 and a side connecting plate 33 connecting the inner connecting plate 31 and the outer connecting plate 32. The inner connecting plate 31 is spaced apart from the outer connecting plate 32 to form a receiving groove 30 therebetween capable of receiving the side of the door leaf a. A first cushion 4 is further attached to the inner side of the inner connection plate 31, and at least a part of the first cushion 4 is sandwiched between the bottom plate main body 20 and the inner connection plate 31. Specifically, the first cushion 4 may be entirely sandwiched between the bottom plate main body 20 and the inner connection plate 31, and in the present embodiment, a part of the first cushion 4 is sandwiched between the bottom plate main body 20 and the inner connection plate 31, and the rest of the first cushion 4 extends beyond the bottom plate main body 20 and the inner connection plate 31. Regardless, the first cushion 4 is used to form a soft fit connection between the inner connecting plate 31 and the bottom plate main body 20 and to form a slight gap between the inner connecting plate 31 and the bottom plate main body 20. A second soft cushion 4a is further arranged on the inner side of the outer connecting plate 32, and the second soft cushion 4a is used for forming soft fit connection between the outer connecting plate 32 and the door leaf a. In this way, the second cushion 4a is disposed between the inner connecting plate 31 and the outer connecting plate 32, so that the outer connecting plate 32 and the door a are prevented from forming a hard fit connection to scratch or crush the door a. In addition, when the thickness of the second cushion 4a is appropriately controlled, the gap between the outer connecting plate 32 and the door leaf a can be filled with the second cushion 4a, so that the looseness of the U-shaped connecting plate 3 in the inner and outer directions can be reduced. The inner connection plate 31 is provided with a first through hole 311 through which a screw 25 can pass. The first through hole 311 is a hole portion through which the screw 25 can pass without being screwed with the screw shaft of the screw 25, but the head of the screw 25 does not pass through the first through hole 311. The inner connecting plate 31 can be detachably suspended and tightened to the bottom plate body 20 by screws 25 screwed into the bottom plate screw holes 22 through the first through holes 311, and the inner lock case 1 and the outer lock case 10 can be detachably connected to the inner connecting plate 31 and the outer connecting plate 32, respectively.

According to the above technical solution, it can be found that the screw 25 is screwed into the bottom plate threaded hole 22 through the first through hole 311 to form a threaded connection with the bottom plate threaded hole 22, so as to be stably positioned on the bottom plate 2, and the inner connecting plate 31 is suspended and positioned on the screw 25 through the first through hole 311, so as to be positioned on the bottom plate 2 and the door leaf a. The inner connecting plate 31 or the U-shaped connecting plate 3 is positioned by forming a hanging relationship with the screw 25 positioned on the base plate 2, and a hanging type positioning structure is adopted. The bottom plate 2 becomes a mounting base for bearing the U-shaped connecting plate 3. Moreover, there is no screw connection between the inner connection plate 31 and the screw, and the inner connection plate 31 is hung on the screw 25 through the first through hole 311, instead of using the press-clamping positioning structure of patent 201521119062.0. The suspension type positioning structure can not only ensure the installation stability of the U-shaped connecting plate 3, but also avoid the phenomenon that the door leaf a is damaged due to transition of clamping force or the problem that the U-shaped connecting plate 3 slides down and falls off due to insufficient clamping force. Secondly, the first cushion 4 is used to form a soft fit connection between the inner connection plate 31 and the bottom plate main body 20 and to form a small gap between the inner connection plate 31 and the bottom plate main body 20. In this way, the first cushion 4 maintains a certain tension between the inner connecting plate 31 and the bottom plate main body 20 by virtue of its own elasticity, so that the screw 25 connected therebetween and the thread of the bottom plate 2 maintain a stable connection relationship and are not easily loosened, and the first cushion 4 has a certain anti-loosening function. Furthermore, since a portion of the first cushion 4 is clamped between the bottom plate main body 20 and the inner connection plate 31, the first cushion 4 can be close to the screw 25 to absorb the pressing force of the screw head of the screw 25 against the inner connection plate 31, thereby preventing the inner connection plate 31 from being damaged due to excessive deformation and better performing the anti-loosening function. For this purpose, the U-shaped connecting plate 3 is not only suspended and tightened on the bottom plate main body 20 by the screws 25, but also the U-shaped connecting plate 3 presses the first cushion 4 by the tightening force of the screws 25, so that the first cushion 4 forms a connecting bridge between the U-shaped connecting plate 3 and the bottom plate main body 20, the door leaf a.

As shown in fig. 5 and 9, the floor main body 20 has a plane area smaller than that of the first pad 4, and a central portion of the first pad 4 for contacting the floor main body 20 is recessed. That is, at least the end portion of the first cushion 4 above and below the bottom plate main body 20 is higher than the middle portion of the first cushion 4, so that a concave structure is formed at the middle position of the first cushion 4, at the initial stage of installation, the first cushion 4 is combined with the bottom plate main body 20 through the concave structure to preliminarily determine the positioning position of the first cushion 4 in the up-down direction, and in the case of reasonably setting the fitting size of the bottom plate main body 20 and the first cushion 4, the bottom plate main body 20 can also be used for supporting the first cushion 4 to thereby facilitate increasing the difficulty of slipping down the U-shaped connecting plate 3. In addition, when the bottom plate main body 20 is installed on the middle part of the first soft pad 4, the bottom plate main body 20 sinks wholly or partially under the outer side surface of the first soft pad 4, and the end part of the first soft pad 4 above and below the bottom plate main body 20 can be attached to the door leaf a in a relatively large area by applying moderate pressure, so that the inner connecting plate 31 is stably supported in the inner and outer directions by the first soft pad 4 leaning against the door leaf a, and the phenomenon that a human hand feels that obvious virtual positions exist in the inner and outer directions when operating on the inner lock shell 1 is reduced. Wherein the plane area is the total area of the defined member in the plane direction defined by the profile of the member, and includes not only the plane area of the wall of the member but also the plane area of the hole if the hole is provided thereon.

As shown in fig. 2, 3 and 10, in order to position the first cushion 4 to the U-shaped connecting plate 3, a first protruding post 45 facing the inner connecting plate 31 is disposed on the first cushion 4, and a first plate hole 313 corresponding to the first protruding post 45 and capable of receiving the first protruding post 45 is disposed on the inner connecting plate 31. In this way, the first cushion 4 is positioned on the inner attachment plate 31 by the combination of the first raised post 45 and the first plate hole 313, and a stable connection is formed between the first cushion 4 and the inner attachment plate 31. Also for positioning the second cushion 4a to the U-shaped connecting plate 3, a second protruding pillar 45a is provided on the second cushion 4a facing the outer connecting plate 32, and a second plate hole 321 corresponding to the second protruding pillar 45a and capable of receiving the second protruding pillar 45a is provided on the outer connecting plate 32. The positioning structure of the second cushion 4a has similar points to the positioning structure of the first cushion 4, and similar technical effects can be obtained, and thus, the description thereof is not repeated.

The outer lock housing 10 is installed outdoors and if it is easily removed by a lawbreaker, it will directly cause the anti-theft function of the lock to fail. In view of this, as shown in fig. 2, 6 and 8, a cylinder 101 with a threaded hole is disposed in the outer lock housing 10, a second through hole 321 corresponding to the cylinder 101 is disposed in the outer connecting plate 32, a void 312 corresponding to the second through hole 321 is disposed in the inner connecting plate 31, the second through hole 321 allows a lead screw portion of the screw 102 to pass through, the void 312 allows the entire screw 102 to escape, and the lead screw portion of the screw 102 passes through the second through hole 321 and is screwed into the cylinder 101 to tighten the outer lock housing 10 on the outer connecting plate 32. The cylinder 101 with the screw hole is arranged in the outer lock shell 10, namely the cylinder 101 is collected in the outer lock shell 10, is hidden and is not easy to be observed and touched by lawbreakers standing outdoors to be easily damaged. Meanwhile, the column body 101 cannot be exposed to destroy the overall appearance of the lock body. The hollow portion 312 can be made to escape from the entire screw 102, and the hollow portion 312 and the screw 102 are not connected to each other. In view of structure, the cutout 312 is a cutout provided at an edge of the inner connecting plate 31. Of course, in other embodiments, the hollow portion 312 may also be formed on the inner connection plate 31 and have a closed boundary, such as a circular through hole portion. According to the above technical solution, it can be found that, for a person standing outdoors, the column 101, the second through hole 321 and the void 312 are all shielded by the outer lock housing 10 mounted on the outer connecting plate 32, and the installer can only stand indoors to perform mounting operation, and cannot perform mounting or dismounting when standing outdoors, so that the anti-theft performance of the lock body can be improved. In addition, in a state where the smart lock is mounted on the door a, the second through hole 321 and the screw 102 screwed therein are completely blocked by the door a, and at this time, a lawbreaker cannot get into the door.

As for the positioning structure of the inner lock housing 1, further, as shown in fig. 1, 2 and 11, the inner connecting plate 31 is provided with 4 extending mounting feet 314, only one of which is labeled in the figure for simplifying the drawing. The mounting feet 314 are inserted into the inner lock casing 1 and close to the inner side of the side wall body of the inner lock casing 1, mounting foot threaded holes 3141 are formed in the mounting feet 314, side wall bodies of the inner lock casing 1 are respectively provided with side wall holes 16 corresponding to the mounting foot threaded holes 3141, and the inner lock casing 1 is connected to the mounting feet 314 through screws 17. In this way, the screw 17 is screwed into the mounting pin threaded hole 3141 through the side wall hole 16 of the inner lock housing 1, so that the inner lock housing 1 is tightened on the inner connection plate 31, and the installation and the disassembly are simple and convenient.

As shown in fig. 12 and 13, the smart lock is also a lock body with manual-automatic double driving, and includes a bolt driving plate 8 and bolts (81, 82) which are located inside the inner lock housing 1 and can move back and forth, and the bolts (81, 82) are coupled to the bolt driving plate 8 and can extend out or retract into bolt holes (151, 152) provided in the lock housing side wall 15 under the driving of the bolt driving plate 8. The lock tongues (81 and 82) comprise left and right column-shaped tongues 81 and hook-shaped tongues 82. The columnar bolt 81 is fixedly connected to the bolt driving plate 8. The hook-shaped tongue 82 is in the shape of a crank arm, and the end 821 thereof is rotatably disposed on the column 17 connected to the inner lock housing 1, but may also be directly rotatably disposed on the inner lock housing 1. An elongated slot 822 is formed in the middle turning of the hook-shaped tongue 82, a transmission column 804 is further arranged on the bolt driving plate 8, the transmission column 804 extends into the elongated slot 822, and the transmission column 804 is used for driving the hook-shaped tongue 82 to swing in or out of the bolt holes (151, 152) when the bolt driving plate 8 moves back and forth. The lock tongue driving plate 8 is provided with a sliding groove 801, the sliding groove 801 is arranged along the sliding direction of the lock tongue driving plate 8, the inner lock shell 1 is provided with a guide post 18 with a threaded hole at the top end, a step is arranged on the guide post 18, and the guide post 18 not only extends into the sliding groove 801 but also axially limits the lock tongue driving plate 8 through the step. Thus, the combination of the guide post 18 and the sliding groove 801 facilitates effective guiding of the sliding movement of the tongue actuation plate 8, and simultaneously reduces or prevents the tongue actuation plate 8 from jumping up and down in the axial direction of the guide post 18. The step may be formed in various forms, such as a radial protruding ring integrally formed with the guide post 18, or a positioning sleeve penetrating the guide post 18 and being independent of the guide post 18. The bolt driving plate 8 is further provided with a first driving boss 80 and a second driving boss 80a which are arranged in a front-rear separated manner.

A recess 14 is provided on the outer side of the inner lock housing wall, in which recess 14 the rotary handle 11 is arranged. A plastic space ring 12 is arranged between the rotating handle 11 and the vertical wall surface of the pit 14. A bottom wall through hole 140 is provided in the pit bottom wall of the pit 14. A handle middle shaft 111 is connected to the rotating handle 11. The rotary handle 11 and the handle middle shaft 111 are of a split structure, a connecting cross rod 112 is arranged at the tail end of the handle middle shaft 111, and the screw 113 penetrates through the connecting cross rod 112 to screw the handle middle shaft 111 to the rotary handle 11. The head end of the handle middle shaft 111 extends into the inner lock casing 1 through the bottom wall through hole 140 to connect with a shifting fork 6 to be discussed below, and also positions the rotating handle 11 outside the inner lock casing 1, so that the rotating handle 11 can be directly operated by human hands.

A driving motor 7 and a rotating disc 5 driven by the driving motor 7 to rotate are further arranged on the inner side of the inner lock shell 1. The output end of the driving motor 7 is provided with a driving gear 71, and the rotating disc 5 is provided with a driven gear 51 which is in meshing transmission with the driving gear 71. The driven gear 51 and the rotating disc 5 are integrally formed. Of course, in another embodiment, the driven gear 51 and the rotary disk 5 may be separate structures, and the driven gear 51 having a separate structure may be radially interlocked with the rotary disk 5. The center of the rotary disk 5 is provided with a disk through-hole 50. The rotating disc 5 is further provided with a first protruding arm 521 and a second protruding arm 522, the first protruding arm 521 and the second protruding arm 522 are arranged at the head end and the tail end of one protruding rib 52 which is continuously arranged on the rotating disc 5, and the protruding rib 52 and the rotating disc 5 are integrally formed. The first and second projecting arms 521, 522 are substantially connected in a radial direction. Of course, in another embodiment, the first and second projecting arms 521 and 522 may be two projecting portions provided on the rotary disk 5 and spaced apart from each other, and may be integrally formed on the rotary disk 5, or may be integrally formed on a separate member having a separate structure from the rotary disk 5, and the separate member radially cooperates with the rotary disk 5.

A shifting fork 6 is further arranged on the inner side of the inner lock shell 1, and a handle middle shaft 111 connected with the rotating handle 11 penetrates through the inner lock shell 1 and the disc through hole 50 to be connected with the shifting fork 6. The fixed end of the shifting fork 6 is provided with a hexagonal through hole 60, and the tail end of the handle middle shaft 111 is arranged in a shape matched with the hexagonal through hole 60. The fixed end of the shifting fork 6 is fixedly connected to the handle middle shaft 111 by a screw passing through the hexagonal through hole 60. Of course, in other embodiments, the shift fork 6 and the handle middle shaft 111 may be integrally formed, at this time, the handle middle shaft 111 and the rotating handle 11 may be separately formed, and the handle middle shaft 111 and the rotating handle 11 may be connected together by screws, insertion, and the like. The free end of the shift fork 6 extends from above the rotary disk 5 to between the first driving boss 80 and the second driving boss 80a to dial the latch bolt driving plate 8. The first driving boss 80 is located on the left side of the shifting fork 6, the first driving boss 80 is used for being combined with the shifting fork 6 in forward rotation to push the lock bolt driving plate 8 and the lock bolt moves towards the extending direction, the second driving boss 80a is located on the right side of the shifting fork 6, and the second driving boss 80a is used for being combined with the shifting fork 6 in reverse rotation to push the lock bolt driving plate 8 and the lock bolt moves towards the retracting direction. The handle middle shaft 111 can freely and radially rotate in the disk through hole 50, the shift fork 6 is located between the first protruding arm 521 and the second protruding arm 522, a space for avoiding the swing of the shift fork 6 is reserved between the first protruding arm 521 and the second protruding arm 522, the shift fork 6 is used for shifting the lock bolt driving plate 8 and the lock bolt to move back and forth by means of the shift fork 6 when the rotating handle 11 is rotated forward and backward, the first protruding arm 521 is located on the right side of the shift fork 6, the first protruding arm 521 is used for pushing the shift fork 6 to swing forward to drive the lock bolt driving plate 8 and the lock bolt to move in the extending direction when the driving motor 7 drives the rotating disk 5 to rotate forward, the second protruding arm 522 is located on the left side of the shift fork 6, and the second protruding arm 522 is used for pushing the shift fork 6 to swing backward to drive the lock when the driving motor 7 drives the rotating disk 5 to rotate backward The tongue drive plate 8 and the locking tongue move in the retraction direction.

Wherein the handle central shaft 111 is free to rotate radially in the disk through hole 50. The above features define the transmission relationship between the handle central shaft 111 and the rotating disc 5, and the radial rotation of the handle central shaft 111 does not drive the rotating disc 5 to rotate radially greatly, or the resistance applied by the rotating disc 5 to the handle central shaft 111 to hinder the rotation is very little or no. Of course, when the handle central shaft 111 rotates radially to press the shift fork 6 against the first protruding arm 521 or the second protruding arm 522, the rotating handle central shaft 111 may drive the rotating disc 5 to rotate through the shift fork 6 without any other obstruction.

The shifting fork 6 is located between the first protruding arm 521 and the second protruding arm 522, and a space for avoiding the swing of the shifting fork 6 is reserved between the first protruding arm 521 and the second protruding arm 522. Thus, when the first and second projecting arms 521 and 522 are stationary in position (for convenience of discussion, this position is defined as the home position below), the first and second projecting arms 521 and 522 do not prevent the shift fork 6 from swinging within its nominal swing range, i.e., the shift fork 6 still has enough swing space to drive the latch plate 8 to move back and forth so that the latches (81, 82) retract to the unlocked position and extend to the locked position. Secondly, the swing amplitude of the shift fork 6 refers to a rated swing range required by the shift fork 6 in the process of driving the bolt driving plate 8 to move back and forth so as to enable the bolts (81, 82) to retract to the unlocking position and extend to the locking position.

The shifting fork 6 is used for shifting the bolt driving plate 8 and the bolt to move back and forth by means of the shifting fork 6 when the rotating handle 11 rotates forwards and backwards. The above features define the first driving mode of the intelligent lock, which is a manual driving mode, and the rotary handle 11, the handle middle shaft 111 and the shifting fork 6 form a manual driving mechanism. When the rotating handle 11 is rotated forward and backward, the rotating handle 11 drives the shifting fork 6 to shift the lock bolt driving plate 8 and the lock bolts (81 and 82) to move back and forth, so that the unlocking and locking operations of the lock body are completed. Secondly, first protruding arm 521 is located the right side of shift fork 6, first protruding arm 521 is used for being worked as driving motor 7 drive can promote when rolling disc 5 forward rotation shift fork 6 is along forward swing and then drive spring bolt drive plate 8 and spring bolt stretch out, second protruding arm 522 is located the left side of shift fork 6, second protruding arm 522 is used for being worked as driving motor 7 drive can promote when rolling disc 5 reverse rotation shift fork 6 is along reverse swing and then drive spring bolt drive plate 8 and spring bolt (81, 82) are withdrawed. The above features define a second driving mode of the intelligent lock, and in the automatic driving mode, the first protruding arm 521, the second protruding arm 522, the rotating disc 5, the shifting fork 6 and the driving motor 7 form an automatic driving mechanism. When the driving motor 7 works to drive the rotating disc 5 to rotate positively and negatively respectively, the first protruding arm 521 and the second protruding arm 522 which are respectively arranged at the left side and the right side of the shifting fork 6 can respectively push the shifting fork 6 to swing positively and negatively so as to drive the lock bolt driving plate 8 and the lock bolt to move back and forth, so that the unlocking and locking operations of the lock body are completed. It can be seen that the manual drive and the automatic drive have separate control signal inputs, but a common power output, namely the fork 6.

According to the above technical solution, it can be seen that, since the handle middle shaft 111 connected to the rotary handle 11 passes through the lock housing and the disk through hole 50 to connect the shift fork 6, the rotary disk 5 is provided with the first protruding arm 521 and the second protruding arm 522, and the shift fork 6 is located between the first protruding arm 521 and the second protruding arm 522. In this way, the driving members for driving the shifting fork 6 to move, namely the handle middle shaft 111, the first protruding arm 521 and the second protruding arm 522, can be gathered together to form a shifting fork driving module, and the manual driving mechanism and the automatic driving mechanism formed by the driving members have independent control signal input ends, but have a unified power output end, namely the shifting fork 6, and have a compact structure and a small installation space. The manual drive and the automatic drive can be arranged inside or outside the inner lock housing 1, but also inside an outer lock housing, i.e. the outer lock housing 10. In addition, the handle middle shaft 111 can freely rotate in the disc through hole 50 in the radial direction, and a space for avoiding the swing amplitude of the shifting fork 6 is reserved between the first protruding arm 521 and the second protruding arm 522. In this way, the handle central shaft 111 is arranged in the rotary disk 5 through the disk through hole 50, so that not only can the installation space be shared with the rotary disk 5, but also the resistance of the rotary disk 5 to the radial rotation of the handle central shaft 111 can be reduced to the maximum extent, and the adverse effect of the rotary disk 5 on the rotation thereof can be weakened. Under the condition that the rotating disc 5 is in a rest state and the first protruding arm 521 and the second protruding arm 522 on the rotating disc are stopped at original positions, the handle middle shaft 111 can freely drive the shifting fork 6 to swing back and forth, and transmission parts of the rotating disc 5, the driving motor 7 and the like which have transmission relation with the rotating disc 5 do not need to be driven to act greatly at the same time, even the transmission parts are not driven to act, so that when the rotating handle 11 is rotated, the hand feeling is lighter, and the application experience is good.

As shown in fig. 13 and 14, in order to provide a technical basis for realizing the automatic resetting of the first and second protruding arms 521 and 522, the driving motor 7 is further configured to drive the rotating disc 5 to rotate so as to retreat the first and second protruding arms 521 and 522, thereby reserving a retreat space for retreating and rotating the shift fork 6; the lock further comprises a circuit board arranged in the lock shell, a third sensor 92 capable of sensing the first projection arm 521 is arranged on the circuit board, the third sensor 92 is arranged at the position where the first projection arm 521 retreats to the tail section, and the third sensor 92 is used for transmitting a signal whether the first projection arm 521 or the second projection arm 522 is retreated to the tail section or not to a central controller connected with the circuit board. Of course, in other embodiments, the third sensor 92 may also be used to detect the second raised arm 522. In this way, after the central controller knows that the first and second protruding arms 521 and 522 have retreated to the end section, the central controller may stop the driving motor 7 to stop the first and second protruding arms 521 and 522 to the end section, otherwise, the driving motor 7 continues to operate to drive the first and second protruding arms 521 and 522 to retreat.

In order to enhance the anti-knock function of the smart lock, a retraction dead point 801 for preventing the latch bolt driving plate 8 from being retracted to retract the latch bolt by being combined with the free end of the shift fork 6 is provided on the first driving boss 80. The inner side of the inner lock shell 1 is further provided with three circles of special-shaped springs 83, and the three circles of special-shaped springs 83 are used for pushing the shifting fork 6 which swings to the left side position, so that the free end of the shifting fork 6 is kept combined with the withdrawing dead point part 801 on the first driving boss 80. The three-turn shaped spring 83 has a center spring turn 803 and spring legs (831, 832) extending from the center spring turn 803. The elastic support 831 is circular ring-shaped, and the elastic support 832 is bent. The resilient leg 831 is attached to the guide post 18 by means of a screw screwed into the threaded hole, and the resilient leg 832 is attached to the free end of the fork 6. Thus, the elastic leg 831 of the three-turn shaped spring 83 is relatively stably positioned by being connected to the guide post 18 and does not move with the tongue driving plate 8 and the shift fork 6, and the elastic leg 832 of the three-turn shaped spring 83 is elastically deformed by the swing of the free end of the shift fork 6 and positions the free end of the shift fork 6 coupled to the first driving boss 80 or the second driving boss 80a by means of the pushing force generated by the elastic deformation so that the free end of the shift fork 6 cannot be freely separated from the first driving boss 80 or the second driving boss 80 a. Thus, when the first driving boss 80 and the forward-rotating shifting fork 6 are combined to push the lock tongue driving plate 8 and the lock tongue to move towards the extending direction, the shifting fork 6 is kept combined with the withdrawing dead point part 801 on the first driving boss 80 to form self-locking under the pushing action of the three circles of special-shaped springs 83, and at the moment, even if the lock tongue driving plate 8 bearing the axial knocking force is difficult to enable the first driving boss 80 to push the shifting fork 6 to retreat. The combination of the shifting fork 6 and the first driving boss 80 improves the self-locking function of the lock body, and the difficulty of unlocking by illegal molecule knocking is greatly increased. However, when the rotating handle 11 is rotated, the shift fork 6 can be easily driven to retreat beyond the retraction dead point 801 to continue swinging.

The intelligent lock can realize the above-mentioned double driving modes of manual locking and automatic locking, and also can realize an automatic door closing method. As shown in fig. 16, a bolt stroke sensor capable of detecting the extending length of the bolts (81, 82) is further disposed in the inner lock body 1. The bolt stroke sensor can directly detect the positions of the bolts (81, 82) to calculate the extending lengths of the bolts (81, 82). In the present embodiment, the projecting length of the latch (81, 82) is estimated by detecting the position of the latch driving plate 8. The specific detection scheme is that a signal post 802 used for representing the position of the lock tongue driving plate 8 is further arranged on the lock tongue driving plate 8, a circuit board (not shown in the figure) is further arranged above the lock tongue driving plate 8, a first sensor 9 and a second sensor 91 capable of sensing the signal post 802 at different positions are arranged on the circuit board, the first sensor 9 and the second sensor 91 are arranged in front and back and respectively correspond to a first position where the signal post 802 moves forwards and a second position where the signal post 802 moves backwards, and the driving motor 7 is connected with the circuit board. The first sensor 9 and the second sensor 91 form the bolt stroke sensor, and the bolt stroke sensor is connected with a central controller (not shown in the figure). In this way, the first sensor 9 and the second sensor 91 acquire the position information of the latch bolt driving plate 8, and accurately deduces the extension length of the latch bolts (81, 82) according to the position information to judge whether the latch bolts (81, 82) are locked in place.

When a locking instruction is executed, the central controller controls the driving motor 7 to drive the lock tongues (81, 82) to extend and lock; if the locking bolts (81, 82) are blocked when the locking instruction is executed, so that the extending lengths of the locking bolts (81, 82) cannot reach the preset length, the locking bolt stroke sensor gives a sensing signal that the locking bolts (81, 82) are not in place, and after the central controller receives the sensing signal that the locking bolts (81, 82) are not in place, the central controller controls the driving motor 7 to drag the locking bolts (81, 82) to automatically retract into the locking body, so that locking is automatically stopped after at least two cycles of locking and retracting are continuously executed. Like this, driving motor 7 drags behind spring bolt (81, 82) continuous execution locking, withdrawal two, three or specific quantity's circulation, let driving motor 7 stop work rather than continuing long-time work, be favorable to avoiding driving motor 7 is blocked still blindly work and is damaged after the card, right driving motor 7 carries out intelligent management, has protected effectively driving motor, extension driving motor's life. Meanwhile, under the back-and-forth driving of the driving motor 7, the lock tongues (81 and 82) can be successfully locked by automatically eliminating blocking through back-and-forth movement, so that the locking success rate and the locking safety of the intelligent lock are improved, and the intelligent management of the lock is optimized. And after the lock tongue extends out and is locked in place, a corresponding prompt signal is given. Therefore, after the user knows the prompt signal, the user can know that the lock tongue extends out and is locked in place, and the use safety of the lockset is improved. The prompting signal can be given in various ways, for example, visually through a warning light or a display, and audibly through a buzzer.

If the locking tongues (81, 82) are kept in the extending state after the locking fails, not only the door frame but also the locking tongues (81, 82) are easily damaged when the door leaf is closed by an accidental collision or wind and is collided with the door frame. Therefore, the invention further provides an improvement scheme, when the central controller detects that the state duration time of the extending length of the lock tongues (81, 82) which cannot reach the preset length reaches 2-6 seconds, the central controller controls the driving motor 7 to drag the lock tongues (81, 82) to automatically retract into the lock body. Therefore, the lock tongues (81 and 82) and the door frames arranged corresponding to the lock tongues (81 and 82) can be well protected, and in addition, the lock tongues (81 and 82) can be retracted into the lock body to be prepared for next locking in advance, so that the next locking efficiency is improved.

If the locking fails, the door leaf a is still in an open state and is not found, and potential safety hazards exist. In view of this, a further technical solution is that after at least two cycles of locking and retracting are continuously performed, not only the locking is automatically stopped but also the central controller controls the alarm to send out an alarm prompt signal. Therefore, the alarm sends out an alarm prompt signal to remind a user of the actual locking state of the current door lock, so that the safety of the home environment is improved, and the user can manually intervene to correct the locking state. The alarm can adopt a buzzer, send corresponding prompts to the mobile phone APP and the like. In addition to this, the following detection scheme can be employed. A door leaf closing sensor 18 is further arranged in the inner lock shell 1, the door leaf closing sensor 18 is arranged on the inner side of the lock shell side wall 15 where the bolt holes (151, 152) are located, the door leaf closing sensor 18 is connected with the circuit board, and the door leaf closing sensor 18 is used for sensing whether a door leaf a is closed in place and transmitting a signal indicating whether the door leaf a is closed in place to a central controller connected with the circuit board. When the locking instruction is executed for 10 seconds, the central controller does not receive a signal that the door leaf a is closed in place, and the central controller controls the alarm to send out an alarm prompt signal and enables the driving motor 7 which still drives the lock tongue to extend and move to stop working, so that the driving motor 7 is prevented from being burnt out due to continuous working after being stuck.

As shown in fig. 10, in order to simplify the door closing operation, a magnetic element 19a is further included in the door frame lock box, a magnetic inductor 19 capable of inducing the magnetic element 19a is arranged in the inner lock casing 1, and the magnetic inductor 19 is connected with the central controller; when the door is closed, the magnetic sensor 19 is triggered by the magnetic element 19a to transmit the locking command to the central controller. Therefore, when the door leaf is closed, even if hands do not send a locking instruction, the intelligent lock can automatically control the bolt to stretch out to complete locking under the condition that other locking conditions are met, and the intelligent lock is very convenient and fast. The magnetic inductor 19 is connected to the central controller, and may be physically connected by an electrical signal line or may be connected by a wireless signal.

As shown in fig. 12, a forced locking button 13 is provided on the panel of the inner lock case 1, the forced locking button 13 is connected to the central controller, and the forced locking button 13 senses a locking command and transmits the locking command to the central controller connected to the circuit board. In this way, when the forced locking button 13 is triggered, the locking instruction is sent to the central controller to control the locking of the intelligent lock. The forced locking button 13 is connected to the central controller, and may be physically connected by an electrical signal line or may be connected by a wireless signal.

Claims (6)

1. The lock body with the novel bolt structure comprises a lock shell, a bolt driving plate and a bolt, wherein the bolt driving plate and the bolt are positioned on the inner side of the lock shell and can move back and forth; the lock bolt is characterized by comprising a columnar bolt and a hook-shaped bolt which are arranged on the left side and the right side respectively, wherein the columnar bolt is fixedly connected to the lock bolt driving plate, the hook-shaped bolt is in a crank arm shape, the tail end of the hook-shaped bolt is rotatably arranged on the lock shell or an upright post connected with the lock shell, a long groove is arranged at a middle corner, a transmission column is further arranged on the lock bolt driving plate, the transmission column extends into the long groove, and the transmission column is used for driving the hook-shaped bolt to swing in or out of a lock bolt hole when the lock bolt driving plate moves back and forth; a first driving boss and a second driving boss which are arranged in a front-back separated mode are arranged on the bolt driving plate; a shifting fork and three circles of special-shaped springs are further arranged on the inner side of the lock shell, a rotating handle is arranged on the outer side of the wall body of the lock shell, a handle middle shaft connected with the rotating handle penetrates through the lock shell and is fixedly connected with the fixed end of the shifting fork, the free end of the shifting fork is located between the first driving boss and the second driving boss, and a withdrawing dead point part used for being combined with the free end of the shifting fork to prevent the lock tongue driving plate from withdrawing to withdraw the lock tongue is arranged on the first driving boss; the lock bolt driving plate is provided with a sliding groove, the sliding groove is arranged along the sliding direction of the lock bolt driving plate, a guide post with a threaded hole at the top end is arranged on the lock shell, a step is arranged on the guide post, the guide post not only extends into the sliding groove but also axially limits the lock bolt driving plate through the step, one end of the three-ring special-shaped spring is screwed into the threaded hole by virtue of a screw to be connected onto the guide post, and the other end of the three-ring special-shaped spring is connected onto the free end of the shifting fork; first drive boss is located the left side of shift fork, first drive boss be used for with forward rotation the shift fork combines to promote the spring bolt drive plate reaches the spring bolt is to the direction of stretching out removal, three rings of abnormal shape springs are used for pushing away to swing to the left side position the shift fork lets its free end keep with withdraw dead point portion on the first drive boss and combine, second drive boss is located the right side of shift fork, second drive boss be used for with reverse rotation the shift fork combines to promote the spring bolt drive plate reaches the spring bolt is to withdrawing the direction removal.

2. A lock body according to claim 1, characterized in that a driving motor and a rotary disc driven by the driving motor to rotate are arranged on the inner side of the lock shell, a disc through hole is arranged in the center of the rotary disc, and a first protruding arm and a second protruding arm are arranged on the rotary disc; a handle middle shaft connected with the rotating handle penetrates through the lock shell and is connected with the shifting fork through a disc through hole, the handle middle shaft is arranged in the disc through hole and can freely and radially rotate, a fixed end of the shifting fork is fixedly connected with the handle middle shaft, a free end of the shifting fork extends out of the upper portion of the rotating disc and is connected with the lock tongue driving plate in a shifting mode, the shifting fork is arranged between the first protruding arm and the second protruding arm, a distance for avoiding the swing amplitude of the shifting fork is reserved between the first protruding arm and the second protruding arm, the first protruding arm is arranged on the right side of the shifting fork, the first protruding arm is used for driving the shifting fork to swing in the forward direction and further drive the lock tongue driving plate and the lock tongue to extend out when the driving motor drives the rotating disc to rotate in the forward direction, the second protruding arm is arranged on the left side of the shifting fork, and the second protruding arm is used for driving the shifting fork to swing in the reverse And driving the bolt driving plate and the bolt to retract.

3. A lock body according to claim 1 or 2, characterized in that a recess is provided on the outer side of the lock housing wall, in which recess the rotary handle is arranged.

4. A lock body according to claim 3, wherein a plastic spacer is provided between the twist grip and the upstanding wall surface of the pocket.

5. The lock body of claim 2, wherein a signal post for indicating the position of the lock tongue driving plate is further arranged on the lock tongue driving plate, a circuit board is further arranged above the lock tongue driving plate, a first sensor and a second sensor which can sense the signal post at different positions are arranged on the circuit board, the first sensor and the second sensor are arranged in front of and behind the circuit board and respectively correspond to a first position where the signal post moves forwards and a second position where the signal post moves backwards, and the driving motor is connected with the circuit board.

6. The lock body of claim 5, wherein the driving motor is further configured to drive the rotary disc to rotate to retract the first protruding arm and the second protruding arm, so as to reserve a retraction space for retracting the shift fork; the lock further comprises a circuit board arranged in the lock shell, a third sensor capable of sensing the first protruding arm or the second protruding arm is further arranged on the circuit board, the third sensor is arranged at the position where the first protruding arm or the second protruding arm retreats to the tail section, and the third sensor is used for transmitting a signal whether the first protruding arm or the second protruding arm retreats to the tail section or not to a central controller connected with the circuit board.

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