Patent Publication Number: US-2023151638-A1

Title: Door lock device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to Taiwan Application Serial No. 109210968, filed on Aug. 24, 2020. The entirety of the application is hereby incorporated by reference herein and made a part of this specification. 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to door lock devices, and more particularly, to a door lock device capable of generating an idle state. 
     2. Description of Related Art 
     Conventionally, a door lock is disposed on a door plate and provided with a handle. A user can rotate the handle to operate the door lock, thereby going into or out of a room. 
     Referring to  FIG.  1   , a conventional door lock device  1  has a lock head  12  actuateable by a key (not shown), a lock tongue  14  (including a lock bolt  141 ) actuateable by a rotary handle (not shown), a security bolt  13  for keeping the lock bolt  141  in a locking state, and a handle interlocking structure  15  for driving the lock tongue  14  to actuate. In operation, the lock head  12  and the lock tongue  14  are extended to engage in a lock hole (not shown) and a lock tongue hole (not shown) of a door frame (not shown), respectively. Meanwhile, the lock tongue  14  is blocked by a blocking plate  132  of the security bolt  13 . As such, the lock bolt  141  cannot be retracted, thereby keeping the door lock device  1  in a locking state (i.e., the door cannot be opened) and achieving good security. 
     However, in the conventional door lock device  1 , when the door lock device  1  is in a locking state, the rotary handle cannot be rotated due to the restraining effect of the lock tongue  14  being unable to retract. If the rotary handle is forced to rotate at this time, the handle interlocking structure  15  of the door lock device  1  will be damaged. For example, if the rotary handle is impacted by an object or forced to rotate by an unscrupulous person, the handle interlocking structure  15  will be damaged by an improper external force. As such, the door lock device  1  cannot be used normally after being unlocked (i.e., after the lock head  12  is retracted). 
     Further, the conventional door lock device  1  lacks any fireproof mechanism and cannot meet the requirements of fire doors. Therefore, the door lock device  1  cannot be mounted on a fire door. For example, in the case of a fire in a building, the door lock device  1  cannot be forced to lock. As such, when the fire spreads, the fire door that prevents the fire from spreading indoors may be mistakenly opened by an indoor person, thereby introducing a large amount of air indoors and causing the fire to rush indoors. Consequently, not only the indoor person who mistakenly opens the fire door is burned by the rushing fire, but also other indoor persons fall into a sea of fire. 
     Therefore, how to overcome the above-described drawbacks of the prior art has become critical. 
     SUMMARY 
     In view of the above-described drawbacks, the present disclosure provides a door lock device, which comprises: a housing having a receiving space; an acting assembly arranged in the receiving space and having a lock tongue; an operating assembly arranged in the receiving space and interlocked with a target handle; and a regulating assembly arranged in the receiving space, wherein when the operating assembly is regulated into an interlocking state through the regulating assembly, the target handle drives the acting assembly through the operating assembly to cause the lock tongue to extend or retract relative to the housing, and wherein when the operating assembly is regulated into an idle state through the regulating assembly, the operating assembly is unable to drive the acting assembly and the target handle is unable to be interlocked with the lock tongue. 
     In an embodiment, the operating assembly has at least one operating mechanism comprising a rotating member engaging with the target handle, a base body disposed around the rotating member, and a sheet body fixed on the base body and disposed around the rotating member. For example, the sheet body has a stop arm for cooperating and actuating with the acting assembly. Alternatively, a sliding slot is formed on a peripheral surface of the base body and in communication with the rotating member. Further, the operating mechanism comprises a sliding block engaging with the sliding slot to abut against or separate from the rotating member along the sliding slot. An elastic element is disposed around the sliding block. 
     In an embodiment, the acting assembly further comprises a lock tongue base connected to the lock tongue and a fireproof sheet displaceably disposed on the lock tongue base, wherein the fireproof sheet has a security post made of a hot melt material, the security post protrudes into and engages with the lock tongue base, and an acting post is arranged in the receiving space of the housing corresponding to the fireproof sheet. 
     In an embodiment, the regulating assembly comprises a button pivotally connected to the housing and exposed from the receiving space, a first acting plate and a second acting plate arranged at opposite sides of the button, a rotating sheet axially connected to the housing and passing through the first and second acting plates, an elastic sheet connecting the rotating sheet and the housing, and a rotating plate axially connected to the housing and elastically connected to the rotating sheet, such that in operation, the button is interlocked with one end of one of the first and second acting plates to cause another end of said one of the first and second acting plates to interlock with the rotating plate. 
     In an embodiment, the regulating assembly comprises a button pivotally connected to the housing and exposed from the receiving space, a rotating plate axially connected to the housing, an electromagnetic valve interlocked with the rotating plate, and a battery actuating the electromagnetic valve, and wherein the button serves as an electrical switch for connecting the battery and the electromagnetic valve through wires. 
     In an embodiment, the regulating assembly comprises a button pivotally connected to the housing and exposed from the receiving space, a first acting plate and a second acting plate arranged at opposite sides of the button, a rotating sheet axially connected to the housing and passing through the first and second acting plates, and a rotating plate axially connected to the housing and elastically connected to the rotating sheet, and wherein a sleeve is formed at one end of the rotating sheet, and a positioning rod is vertically disposed on the housing and positioned in the sleeve, such that when the rotating sheet swings, the sleeve collides with the positioning rod. 
     In an embodiment, the regulating assembly comprises a rotating plate axially connected to the housing and an electromagnetic valve interlocked with the rotating plate. 
     According to the door lock device of the present disclosure, the operating assembly is regulated into the interlocking state or the idle state through the regulating assembly. As such, when the target handle serves as an outdoor handle, a user can regulate the operating assembly and the outdoor handle into the idle state so as not to interlock the operating assembly and the acting assembly. Therefore, compared to the prior art, the outdoor handle cannot operate the lock tongue when the door lock device of the present disclosure is locked. Hence, if the outdoor handle is forced to rotate (for example, impacted by an external force or forced to rotate by an unscrupulous person), neither the operating assembly nor the acting assembly will be affected (i.e., the lock tongue maintains a good locking state), thus avoiding damage of the operating assembly and ensuring safe and normal use of the door. 
     Further, since the security post is made of a hot melt material, the security post will melt when the door lock device is at high temperature. Consequently, the fireproof sheet covering the lock tongue base falls down due to its own weight and comes into contact with the acting post. As a result, the acting assembly is stuck and cannot be interlocked with the lock tongue. Therefore, when the door lock device is locked, in case of an outdoor fire, the security post will melt so as to prevent the acting assembly from being interlocked with the lock tongue, thus preventing the door from being opened and achieving a fire isolation effect and further preventing an indoor person from mistakenly opening the door. Therefore, the door lock device complies with the fire safety regulations and can be applied to the configuration of fire doors. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a partial perspective view of a conventional door lock structure; 
         FIG.  2 A  is a schematic partial assembly perspective view of a door lock device according to a first embodiment of the present disclosure; 
         FIG.  2 B  is a partially exploded perspective view of  FIG.  2 A ; 
         FIG.  2 C  is an exploded perspective view of a door lock device mounted on a fire door according to the present disclosure; 
         FIG.  3 A  is a schematic plan view of  FIG.  2 A ; 
         FIG.  3 B  is a partially enlarged exploded perspective view of  FIG.  2 B ; 
         FIG.  3 C  is a partially exploded perspective view of a door lock device and cooperating target handles according to the present disclosure; 
         FIGS.  4 A and  4 B  are schematic plan views showing an action process of a door lock device when being equipped with a fastening member according to the present disclosure; 
         FIG.  4 B ′ is a schematic plan view showing an action process of a target key and a regulating assembly when a door lock device is equipped with a fastening member according to the present disclosure; 
         FIGS.  5 A and  5 B  are schematic plan views showing an action process of a door lock device without a fastening member according to the present disclosure; 
         FIG.  6    is a schematic partial plan view of a door lock device according to a second embodiment of the present disclosure; 
         FIG.  7 A  is a schematic partial plan view of a door lock device according to a third embodiment of the present disclosure; 
         FIG.  7 B  is a partially exploded perspective view of  FIG.  7 A ; and 
         FIGS.  8 A and  8 B  are schematic partial plan views showing an action process of a door lock device according to a fourth embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The following illustrative embodiments are provided to illustrate the present disclosure, these and other advantages and effects can be apparent to those in the art after reading this specification. 
     It should be noted that all the drawings are not intended to limit the present disclosure. Various modifications and variations can be made without departing from the spirit of the present disclosure. Further, terms such as “up,” “first,” “second,” “third,” “a,” etc., are merely for illustrative purposes and should not be construed to limit the scope of the present disclosure. 
       FIGS.  2 A,  2 B,  2 C,  3 A,  3 B and  3 C  are schematic views showing a door lock device  2  according to a first embodiment of the present disclosure. Referring to  FIGS.  2 A and  2 B , the door lock device  2  has: a housing  2   a , a regulating assembly  2   b , a first acting assembly  20 , a second acting assembly  30 , a third acting assembly  40 , and an operating assembly  50 . 
     In an embodiment, a front or rear direction such as an arrow direction X is defined along an extending or retraction direction of a lock head  201  of the door lock device  2 , a left or right direction such as an arrow direction Y is defined along a height direction of the door lock device  2 , and an up or down direction such as an arrow direction Z is defined along a thickness direction of the door lock device  2 . It should be noted that the orientations of the arrow directions X, Y and Z are used for illustrative purposes and not intended to limit the present disclosure. 
     Further, referring to  FIG.  2 C , the door lock device  2  is disposed inside a door body  9  pivotally connected to a door frame  90 . 
     The housing  2   a  is in the shape of a rectangular box, which has a receiving space S and a cover member (not shown) covering the receiving space S. An acting post  23  (as shown in  FIG.  2 B ) and other components of the door lock device  2  are received in the housing  2   a.    
     In an embodiment, the housing  2   a  has a key hole  200  communicating with the receiving space S so as for a target key  80  (as shown in  FIG.  3 A ) to be inserted into the key hole  200  from outdoors, thereby actuating the first acting assembly  20  and the second acting assembly  30  (in an action direction F of  FIG.  3 A ). It should be noted that in indoors, the first acting assembly  20  can be interlocked through a knob (at a shaft joint  202  of  FIG.  3 A ). 
     The regulating assembly  2   b  has a rocker-shaped button  24  exposed from the receiving space S and pivotally connected to the housing  2   a  (for example, at a shaft joint  240 ). When one side of the button  24  is pressed, it is inclined toward the other side of the button  24 . Further, the regulating assembly  2   b  has a first acting plate  25  and a second acting plate  26  arranged in the receiving space S and linearly displaceable. As such, either side of the button  24  abuts against one of the first acting plate  25  and the second acting plate  26 . Further, a rotating sheet  27  is axially connected to the housing  2   a  and inserted into holes of the first acting plate  25  and the second acting plate  26 . For example, the rotating sheet  27  has triangular cone-shaped ends. One end of the rotating sheet  27  close to the bottom of the housing  2   a  is connected to the bottom of the housing  2   a  through an M-shaped bent elastic sheet  28 . The elastic sheet  28  applies pressure to the rotating sheet  27  so as to position the rotating sheet  27 . As such, the rotating sheet  27  can form a two-stage toggle position by using the elastic sheet  28 . 
     Further, the regulating assembly  2   b  has a right angle bent rotating plate  29  axially connected to a pivot portion  29   a  on the housing  2   a  and corresponding to the first acting plate  25  and the second acting plate  26 . In operation, a bent portion  290  on one side of the rotating plate  29  is interlocked with another end of one of the first acting plate  25  and the second acting plate  26 . For example, the bent portion  290  of the rotating plate  29  close to the rotating sheet  27  is connected to one end of a spring  22  and the other end of the spring  22  is connected to a shaft portion  27   a  of the rotating sheet  27 . As such, the spring  22  applies a pulling force onto the rotating plate  29  so as to cause the rotating plate  29  to rotate based on the pivot portion  29   a.    
     The first acting assembly  20  has a lock head  201 . The lock head  201  is actuated by inserting the target key  80  into the key hole  200  (or through an indoor knob) so as to extend out of or retract into the receiving space S. When the lock head  201  extends out of the receiving space S, the lock head  201  engages with a lock hole (not shown) on the door frame  90  to present a locking state. 
     The second acting assembly  30  has a security bolt  301 . The security bolt  301  can retract into the receiving space S so as to cause the second acting assembly  30  to stop the third acting assembly  40 . 
     The third acting assembly  40  has a lock tongue  401 . By rotating at least one target handle  81 ,  82  disposed on the door body  9  to drive the third acting assembly  40 , the lock tongue  401  extends out of or retracts into the receiving space S. When the lock tongue  401  extends out of the receiving space S, the lock tongue  401  engages with a lock tongue hole (not shown) on the door frame  90  so as to present another locking state. 
     In an embodiment, referring to  FIGS.  2 B and  3 A , the third acting assembly  40  further has a lock tongue base  402  connected to a rear end of the lock tongue  401  and a fireproof sheet  403  covering above the lock tongue base  402 . A guiding post  402   a  is formed on an upper edge of the lock tongue base  402  and an oblong oval shaped guiding slot  403   a  is formed on an upper side of the fireproof sheet  403 . The guiding post  402   a  can be displaceably disposed in the guiding slot  403   a  so as to allow the fireproof sheet  403  to slide relative to the lock tongue base  402 . 
     Moreover, referring to  FIGS.  2 B and  3 A , the acting post  23  is disposed close to the fireproof sheet  403 . Further, the fireproof sheet  403  has a security post  403   b  made of a hot melt material, which extends from the upper side of the fireproof sheet  403  to the lower side of the fireproof sheet  403  and protrudes into and engages with the lock tongue base  402 . As such, the fireproof sheet  403  can be hung on the lock tongue base  402  without falling. 
     Therefore, referring to  FIGS.  2 B and  3 A , if a fire occurs in the use environment of the door lock device  2 , the security post  403   b  of the fireproof sheet  403  of the third acting assembly  40  will melt at high temperature and no longer engage with the lock tongue base  402 . As such, the fireproof sheet  403  falls from the lock tongue base  402  to a position between the lock tongue base  402  and the acting post  23  of the housing  2   a . Therefore, the lock tongue base  402  cannot extend or retract. That is, the locking state of the third acting assembly  40  cannot be released by using the operating assembly  50  (detailed below). Consequently, the door body  9  cannot be opened, thereby preventing an indoor or outdoor person from mistakenly opening the door body  9 . As such, the door body  9  can prevent the fire from rushing indoors so as to achieve a fire isolation effect and protect the indoor person from the fire. 
     The operating assembly  50  is connected to the target handle  81 ,  82  and the third acting assembly  40  so as to drive the lock tongue  401  of the third acting assembly  40  to move back and forth when the target handle  81 ,  82  (as shown in  FIG.  3 C ) is rotated. 
     In an embodiment, the operating assembly  50  has a bidirectional action mechanism according to the number of the target handle  81 ,  82 . Referring to  FIGS.  2 B and  3 B , the operating assembly  50  has a first base body  501 , a second base body  502  stacked on a top side of the first base body  501 , a first rotating member  503  disposed on a bottom side of the first base body  501 , a second rotating member  504  disposed on a top side of the second base body  502 , a first sheet body  505  disposed on the bottom side of the first base body  501  and around the first rotating member  503 , and a second sheet body  506  disposed on the top side of the second base body  502  and around the second rotating member  504 . For example, the first base body  501 , the first rotating member  503  and the first sheet body  505  can be regarded as a first operating mechanism  5   a , and the second base body  502 , the second rotating member  504  and the second sheet body  506  can be regarded as a second operating mechanism  5   b . The first and second operating mechanisms  5   a ,  5   b  act in the same manner. 
     The first base body  501  has a ring shape. A circular protruding portion  501   a  is formed on a center of a top surface of the first base body  501 , an n-shaped first sliding slot  501   c  is formed on a peripheral surface of the first base body  501 , a circular first recess portion  501   b  is formed on a bottom of the first base body  501  (as shown in dashed lines of  FIG.  3 B ), and a first position limiting portion  501   d  is formed at an outer end of the first sliding slot  501   c.    
     The second base body  502  has a ring shape. A circular second recess portion  502   b  is formed on a center of a top surface of the second base body  502 , a circular recess portion  502   a  is formed on a bottom of the second base body  502  and around the protruding portion  501   a , an U-shaped second sliding slot  502   c  is formed on a peripheral surface of the second base body  502 , and a second position limiting portion  502   d  is formed at an outer end of the second sliding slot  502   c.    
     The first rotating member  503  is substantially of a cylinder shape and arranged in the first recess portion  501   b  of the first base body  501  from bottom to top. Further, a first bolt slot  503   a  of a square shape is formed at a center of the first rotating member  503  for axially engaging with the target handle  81  (as shown in  FIG.  3 C ), and a first flange portion  503   b  is formed around a portion of a peripheral surface of the first rotating member  503  inside the first base body  501 , and the remaining portion of the peripheral surface of the first rotating member  503  inside the first base body  501  forms a first notch  503   c.    
     The second rotating member  504  is substantially of a cylinder shape and arranged in the second recess portion  502   b  of the second base body  502  from top to bottom. Further, a second bolt slot  504   a  of a square shape is formed at a center of the second rotating member  504  for axially engaging with the target handle  82  (as shown in  FIG.  3 C ), and a second flange portion  504   b  is formed around a portion of a peripheral surface of the second rotating member  504  inside the second base body  502 , and the remaining portion of the peripheral surface of the second rotating member  504  inside the second base body  502  forms a second notch  504   c.    
     The first sheet body  505  has a ring shape. A circular first through hole  505   a  is formed at a center of the first sheet body  505  so as to allow the first rotating member  503  to pass therethrough. The first rotating member  503  passes through the first base body  501  and the first sheet body  505  and protrudes from the first sheet body  505  for engaging with the target handle  81 . Further, a first stop arm  505   b  of a bent shape extends from an edge of the first sheet body  505  and abuts against a driving member  404  of the third acting assembly  40 . Furthermore, a plurality of circular first openings  505   c  are formed on a ring body of the first sheet body  505  so as to allow a plurality of first screws  505   d  to pass therethrough and lock the first sheet body  505  and the first base body  501 . 
     The second sheet body  506  has a ring shape. A circular second through hole  506   a  is formed at a center of the second sheet body  506  so as to allow the second rotating member  504  to pass therethrough. The second rotating member  504  passes through the second base body  502  and the second sheet body  506  and protrudes from the second sheet body  506  for engaging with the target handle  82 . Further, a second stop arm  506   b  of a bent shape extends from an edge of the second sheet body  506  and abuts against the driving member  404  of the third acting assembly  40 . Furthermore, a plurality of circular second openings  506   c  are formed on a ring body of the second sheet body  506  so as to allow a plurality of second screws  506   d  to pass therethrough and lock the second sheet body  506  and the second base body  502 . 
     Further, the operating assembly  50  has a plurality of sliding blocks  507 ,  507 ′ engaging with the first sliding slot  501   c  and the second sliding slot  502   c . A circular arc cap shaped pressing portion  507   a ,  507   a ′ is formed at one end of the sliding block  507 ,  507 ′ and a blocking portion  507   b ,  507   b ′ is formed at the other end of the sliding block  507 ,  507 ′. Furthermore, a middle portion  507   d ,  507   d ′ narrower than the pressing portion  507   a ,  507   a ′ and the blocking portion  507   b ,  507   b ′ is formed between the two ends of the sliding block  507 ,  507 ′, and a through hole  507   c ,  507   c ′ is formed at a center of the middle portion  507   d ,  507   d ′. For example, an elastic element  508 ,  508 ′ such as a compression spring is disposed around the middle portion  507   d ,  507   d ′ of the sliding block  507 ,  507 ′. The outer diameter of the elastic element  508 ,  508 ′ is greater than the hole diameter of the first sliding slot  501   c  and the second sliding slot  502   c . As such, the elastic elements  508 ,  508 ′ are clamped outside the first sliding slot  501   c  and the second sliding slot  502   c , and the first position limiting portion  501   d  and the second position limiting portion  502   d  engage with the middle portions  507   d ,  507   d ′ of the sliding blocks  507 ,  507 ′ so as to prevent the sliding blocks  507 ,  507 ′ from falling off. For example, the elastic elements  508 ,  508 ′ can generate an outward pushing force on the sliding blocks  507 ,  507 ′. 
     In addition, the door lock device  2  can be configured with a first fastening member  51  and a second fastening member  52  such as screws based on requirements. The first fastening member  51  and the second fastening member  52  can be passed through the first opening  505   c , the second opening  506   c  and the through holes  507   c ,  507   c ′ of the middle portions  507   d ,  507   d ′ of the sliding blocks  507 ,  507 ′ so as to fasten the sliding blocks  507 ,  507 ′ between the first sheet body  505  and the first base body  501  and between the second sheet body  506  and the second base body  502 , respectively. 
     During the use of the door lock device  2 , the target key  80  (or the indoor knob) can drive the lock head  201  and the security bolt  301  to extend or retract relative to the receiving space S, thereby locking or unlocking the door lock device  2 . Also, through the operating assembly  50 , the target handle  81 ,  82  can drive the lock tongue  401  to extend or retract relative to the receiving space S, thereby locking or unlocking the door lock device  2 . 
     In an embodiment, the second operating mechanism  5   b  of the operating assembly  50  (i.e., the second sheet body  506 , the second rotating member  504  and the second base body  502 ) is described. 
     Referring to  FIGS.  4 A and  4 B , when assembling the door lock device  2 , an assembler first passes the second fastening member  52  through the second opening  506   c  and causes the door lock device  2  to present a locking state (the lock head  201 , the security bolt  301  and the lock tongue  401  extend out of the receiving space S). Then, the assembler presses the button  24  toward a position corresponding to the second acting plate  26  (a pressing force P 1  of  FIG.  4 A ) so as to cause the button  24  to change from one stage of the two-stage toggle position to the other stage. As such, the rotating sheet  27  drives the spring  22  to pull the rotating plate  29  to rotate, thereby causing a bent portion  291  of the other side of the rotating plate  29  to push the pressing portion  507   a  of the sliding block  507 . When the sliding block  507  is pressed, the blocking portion  507   b  slides into the second sliding slot  502   c  of the second base body  502  and abuts against the second notch  504   c  of the second rotating member  504  so as to engage with the second flange portion  504   b  of the second rotating member  504 . Therefore, the second rotating member  504  and the second base body  502  are engaged together. At this point, the through hole  507   c  of the middle portion  507   d  of the sliding block  507  is aligned with the second openings  506   c . Then, the assembler passes the second fastening member  52  through the through hole  507   c  so as to fasten the sliding block  507  onto the second sheet body  506 , thus connecting the second rotating member  504 , the second base body  502 , the sliding block  507  and the second sheet body  506  together. Thereafter, the assembler engages the target handle  82  with the second bolt slot  504   a  of the second rotating member  504  through a pivot shaft  821  (as shown in  FIG.  3 C ). 
     After the door lock device  2  is mounted onto the door body  9  (as shown in  FIG.  2 C ), a user (or an indoor person) rotates the target handle  82  so as to drive the second sheet body  506 , the second rotating member  504  and the second base body  502  to rotate synchronously (in a rotation direction R of  FIG.  4 B ). As such, the stop arm  506   b  of the second sheet body  506  is interlocked with the driving member  404  of the third acting assembly  40 . That is, the lock tongue  401  is moved backward by a rod  405  so as to retract into the receiving space S, thus unlocking the door lock device  2  (or moved forward by the rod  405  so as to extend out of the receiving space S, thus locking the door lock device  2 ). At this point, the target handle  82  and the second operating mechanism  5   b  of the operating assembly  50  maintain an interlocking state to drive the lock tongue  401  to extend or retract. 
     Further, if the user presses the button  24  toward a position corresponding to the first acting plate  25  (a pressing force P 2  of  FIG.  4 B ), the rotating sheet  27  drives the rotating plate  29  to rotate through the spring  22 , thus causing the bent portion  291  of the other side of the rotating plate  29  to separate from the pressing portion  507   a  of the sliding block  507  (as shown in  FIG.  4 B ′). However, the spring force of the elastic element  508  cannot push the sliding block  507  outward. Therefore, no matter how the user presses the button  24 , since the sliding block  507  is fastened by the second fastening member  52 , the target handle  82  and the second operating mechanism  5   b  of the operating assembly  50  maintain the interlocking state. 
     Furthermore, referring to  FIG.  4 B ′, the target key  80  drives the blocking plate  302  of the second acting assembly  30  to stop the lock tongue  401 . 
     It should be understood that the method of actuating the lock head  201 , the security bolt  301  and the lock tongue  401  by the target key  80  (or the indoor knob) is well known in the art (as shown in  FIGS.  4 A,  4 B and  4 B ′). When the security bolt  301  retracts into the receiving space S (as shown in  FIGS.  4 B and  4 B ′), the blocking plate  302  of the second acting assembly  30  stops the driving member  404  and hence the third acting assembly  40  maintains its original state. 
     Therefore, based on the interlocking state of the second operating mechanism  5   b  of the operating assembly  50 , the target handle  82  corresponding to the second operating mechanism  5   b  can be placed indoors so as to facilitate the user (or the indoor person) to go into or out of the door. 
     On the other hand, if the second fastening member  52  is removed during the assembling process of the door lock device  2 , the target handle  82  in use cannot drive the lock tongue  401 . Only the target key  80  can drive the lock head  201  and the security bolt  301  to extend or retract. Therefore, the door lock device  2  presents another locking state. 
     Referring to  FIGS.  5 A and  5 B , when assembling the door lock device  2 , the assembler first removes the second fastening member  52  from the second opening  506   c  and causes the door lock device  2  to present a locking state (the lock head  201 , the security bolt  301  and the lock tongue  401  extend out of the receiving space S). Then, the assembler presses the button  24  toward a position corresponding to the second acting plate  26  (a pressing force P 1  of  FIG.  5 A ) so as to cause the button  24  to be at one stage of the two-stage toggle position. As such, the rotating sheet  27  drives the spring  22  to pull the rotating plate  29  to rotate, thereby pushing the sliding block  507  to slide into the second sliding slot  502   c  of the second base body  502  and engage with the second rotating member  504 . At this point, the through hole  507   c  of the middle portion  507   d  of the sliding block  507  is aligned with the second openings  506   c . However, the sliding block  507  cannot be fastened onto the second sheet body  506  without the second fastening member  52 . At this point, since the rotating plate  29  abuts against the sliding block  507 , when the target handle  82  is rotated, the stop arm  506   b  of the second sheet body  506  can still act in a manner as shown in  FIG.  5 B . 
     After the door lock device  2  is mounted onto the door body  9  (as shown in  FIG.  2 C ) and the user presses the button  24  toward a position corresponding to the first acting plate  25  (a pressing force P 2  of  FIG.  5 B ), the button  24  is positioned at the other stage of the two-stage toggle position. The rotating sheet  27  drives the rotating plate  29  to rotate reversely through the spring  22 , thus causing the bent portion  291  of the other side of the rotating plate  29  to separate from the pressing portion  507   a  of the sliding block  507 . The spring force of the elastic element  508  pushes the sliding block  507  outward. Therefore, the blocking portion  507   b  of the sliding block  507  slides out of the second sliding slot  502   c  of the second base body  502  and abuts against the rotating plate  29  (as shown in  FIG.  5 A ). At this point, the sliding block  507  is no longer connected with the second rotating member  504  and the second base body  502 . Therefore, the second rotating member  504  cannot rotate synchronously with the second base body  502  (or the second sheet body  506 ). 
     Thereafter, when the user closes and locks the door body  9  (as shown in  FIG.  5 A ), if the target handle  82  is rotated, since the second fastening member  52  is removed and the stop arm  506   b  of the second sheet body  506  cannot be interlocked with the driving member  404  of the third acting assembly  40 , i.e., the lock tongue  401  does not displace, the target handle  82  cannot be interlocked with the third acting assembly  40  and hence enters into an idle state. 
     Therefore, based on the idle state of the second operating mechanism  5   b  of the operating assembly  50 , the target handle  82  corresponding to the second operating mechanism  5   b  can be placed outdoors. As such, when the door lock device  2  is in a locking state (the lock head  201 , the security bolt  301  and the lock tongue  401  extend out of the receiving space S), if the target handle  82  is impacted by an external object (or forced to rotate by an unscrupulous person), the operating assembly  50  will not be damaged since the target handle  82  is in the idle state. Even if the target handle  82  is damaged, it is only necessary to replace the target handle  82  (the repair cost is quite low), and the operation of the door lock device  2  is still normal. 
     It should be understood that the user can press the button  24  so as to cause the target handle  82  and the second operating mechanism  5   b  of the operating assembly  50  to enter into the interlocking state or the idle state. 
     On the other hand, since the first operating mechanism and the second operating mechanism act in the same manner, as shown in  FIG.  3 C , the first operating mechanism can mount the target handle  81  through a pivot shaft  811  so as to enter into an interlocking state or an idle state. Therefore, during the assembling process of the door lock device  2 , the first fastening member  51  and/or the second fastening member  52  can be mounted or removed according to the requirement so as to cause the first operating mechanism and/or second operating mechanism to enter into the interlocking state or the idle state. Hence, the target handle having the idle state can be mounted outdoors and the target handle having the interlocking state can be mounted indoors, or the target handle having the idle state can be mounted both indoors and outdoors, or the target handle having the interlocking state can be mounted both indoors and outdoors. 
       FIG.  6    is a schematic view of a door lock device  2 ′ according to a second embodiment of the present disclosure. The present embodiment differs from the first embodiment in the construction of the regulating assembly  2   b , and those that are the same will not be repeated below. 
     Referring to  FIG.  6   , the regulating assembly  2   b  has an electromagnetic valve  60  interlocked with a rotating plate  29 ′ and a battery  61  actuating the electromagnetic valve  60 . The rotating plate  29 ′ has a flat plate shape. 
     The electromagnetic valve  60  acts when being supplied with an electric current. For example, a guiding rod  601  extends outward to push one end of the rotating plate  29 ′, thus causing the other end of the rotating plate  29 ′ to go upward and push the sliding block  507 ,  507 ′. 
     The battery  61  provides an electric current into the electromagnetic valve  60  so as to drive the electromagnetic valve  60  to extend the guiding rod  601 . 
     In an embodiment, the electric current output action of the battery  60  is controlled by the button  24 . For example, the button  24  is an electrical switch, which connects the battery  61  and the electromagnetic valve  60  through wires  62 . Therefore, by selecting the pressing direction of the button  24  to control the action of the electromagnetic valve  60 , the guiding rod  601  of the electromagnetic valve  60  can be extended or retracted to control the rotation of the rotating plate  29 ′ to thereby push the sliding block  507 . 
     Since the wires  62  can be arranged according to the requirement, the arranging position of the electromagnetic valve  60  and the battery  61  can be more flexible. Therefore, the first and second acting plates  25 ,  26 , the rotating sheet  27  and the elastic sheet  28  can be replaced by the electromagnetic valve  60 , the battery  61  and the wires  62  so as to improve the flexibility of arrangement of the regulating assembly  2   b.    
       FIGS.  7 A and  7 B  are schematic views showing a door lock device  2 ″ according to a third embodiment of the present disclosure. The present embodiment differs from the first embodiment in the shape of the regulating assembly  2   b , and those that are the same will not be repeated below. 
     Referring to  FIGS.  7 A and  7 B , a sleeve  770  is formed at one end of the rotating sheet  77 , and a positioning rod  78  is vertically disposed on the housing  2   a  and arranged in the sleeve  770 . When the rotating sheet  77  swings, the sleeve  770  collides with the positioning rod  78 . As such, the rotating sheet  77  forms a two-stage toggle position through cooperation between the sleeve  770  and the positioning rod  78 . 
     In an embodiment, the rotating plate  79  is in the shape of a curved knife, which has a handle  790  corresponding to the first acting plate  25 . In operation, the first acting plate  25  is interlocked with a blade  791  of the rotating plate  79 . For example, the spring  22  is connected to the handle  790  of the rotating plate  79 . The spring  22  applies an elastic force on the rotating plate  79  so as to cause the rotating plate  79  to rotate the blade  791  based on the pivot portion  29   a . When the button  24  drives the first acting plate  25  to push the handle  790 , the blade  791  of the rotating plate  79  moves away from the sliding block  507 . On the other hand, when the button  24  drives the first acting plate  25  to move away from the handle  790 , the blade  791  of the rotating plate  79  pushes the sliding block  507  through the elastic force of the spring  22 . 
       FIGS.  8 A and  8 B  are schematic views showing a door lock device  8  according to a fourth embodiment of the present disclosure. The present embodiment differs from the second embodiment in the construction of the regulating assembly  8   b , and those that are the same will not be repeated below. 
     Referring to  FIGS.  8 A and  8 B , the door lock device  8  is in the form of an electronic lock, and the regulating assembly  8   b  has a rotating plate  29 ′ and an electromagnetic valve  60  interlocked with the rotating plate  29 ′. 
     In use, the electromagnetic valve  60  senses an inductive magnetic card (not shown) and generates an electric current so as to extend a guiding rod  601  to push one end of the rotating plate  29 ′, thus causing the other end of the rotating plate  29 ′ to go upward and push the sliding block  507 ,  507 ′. On the other hand, after the electromagnetic valve  60  is turned off, the guiding rod  601  retracts to drive one end of the rotating plate  29 ′ to go up, thereby causing the sliding block  507 ,  507 ′ to push the other end of the rotating plate  29 ′. 
     Therefore, through the design of the door lock device  8  in the form of an electronic lock, the button  24 , the first and second acting plates  25 ,  26 , the rotating sheet  27  and the elastic sheet  28  are replaced by the electromagnetic valve  60  so as to increase the arrangement area of the receiving space S of the housing  2   a , thereby improving the flexibility of arrangement of the components of the electronic lock. 
     According to the door lock device  2 ,  2 ′,  2 ″,  8  of the present disclosure, by removing the fastening member (the first or second fastening member  51 ,  52 ) of the operating mechanism corresponding to the outdoor handle, the target handle  81 ,  82  and the operating assembly  50  can enter into an interlocking state or an idle state according to the requirement. If the target handle  81 ,  82  serves as an outdoor handle, the user can regulate the operating assembly  50  and the outdoor handle into the idle state through the button  24  or the inductive magnetic card (not shown). As such, the outdoor handle cannot operate the lock tongue  401  when the door lock device  2 ,  2 ′,  2 ″,  8  is in a locking state. Therefore, if the outdoor handle is forced to rotate, the operating assembly  50  is prevented from being damaged. 
     Further, by using the security post  403   b  as a fireproof mechanism, the door lock device  2 ,  2 ′,  2 ″,  8  can meet the requirements of fire doors and therefore can be mounted on a fire door. 
     The above-described descriptions of the detailed embodiments are to illustrate the preferred implementation according to the present disclosure, and it is not to limit the scope of the present disclosure. Accordingly, all modifications and variations completed by those with ordinary skill in the art should fall within the scope of the present disclosure defined by the appended claims.