JP4605119B2 - Door lock mechanism - Google Patents

Description

  The present invention relates to a door locking mechanism that performs locking and unlocking electrically and mechanically.

  2. Description of the Related Art Conventionally, as a door locking mechanism that performs locking and unlocking electrically and mechanically, there is a door that can be opened by strong human power in an emergency even in a locked state. For example, in an example of use for a fire door, the fire door is electrically locked and stored on the wall during normal times. When a fire occurs, the fire door is electrically unlocked by a signal from a fire detector or the like. Then, the fire door closes the passage by the power means to prevent the spread of fire. And when it is not electrically unlocked due to fire spread or the like, it is necessary to unlock the storage at the wall by strong human power and close the passage with a fire door. In addition, in a managed building, in an example of use for a partition door that restricts the entry of people for the purpose of protecting information, only entry of people who are authenticated by ID card data is permitted. Electrically locks and unlocks the door. However, in the event of an emergency such as a fire, even if the door is not unlocked electrically for some reason, it is necessary to unlock it with strong human power so that a person can evacuate.

  As such a door locking mechanism, for example, as shown in Patent Document 1, a hook shaft is locked by a latch arm, and is normally locked / unlocked by driving a solenoid. Some can be unlocked.

However, in the door locking mechanism as shown in Patent Document 1 described above, the latch arm is rotated by moving a plurality of parts in sequence by driving the solenoid, and the locking with the hook shaft is unlocked. Because of this structure, it is complicated and large, and it is difficult to install it when the construction space is narrow in the door frame.
JP-A-8-42214

  The present invention has been made to solve the above-described problems, and provides a door locking mechanism that can be miniaturized and can be easily attached even when a construction space for the door frame is narrow. An object of the present invention is to provide a door locking mechanism that realizes a structure that can be forcibly opened by a simple configuration.

In order to achieve the above object, the invention according to claim 1 is a door locking mechanism for locking and unlocking a door with an electric signal, a latch block disposed on either the door or the door frame, and the door or door. A catch block disposed opposite to the latch block on the other side of the frame, the latch block being urged in one direction to move freely, and a moving direction of the latch bolt A first position that is movable in an orthogonal direction and that prevents movement of the latch bolt by energization / non-energization of the electric mechanism, and a stopper that takes a second position that allows the latch bolt to move freely. The catch block has a catch that engages with the latch bolt, and the door is locked in a state where the stopper is in the first position and movement of the latch bolt is prevented, Topper door in a state where the mobile is free of the latch bolt In the second position is unlocked, the electric mechanism and the stopper, one that is disposed in the moving direction of the stopper by the electric mechanism is there.

According to a second aspect of the invention, switching the door lock mechanism according to claim 1, by exchanging be different from the stopper in shape, the state of locking or unlocking the door upon energization of the electric mechanism It's free.

A third aspect of the present invention, which by changing the position of the stopper in the door locking mechanism according to claim 1, and freely switch the state of locking or unlocking the door upon energization of the electric mechanism It is.

According to a fourth aspect of the present invention, in the door locking mechanism according to any one of the first to third aspects, the catch is displaced and the door is unlocked when a predetermined load or more is applied to the door. It is what is done.

According to a fifth aspect of the present invention, in the door locking mechanism according to the fourth aspect , the locking force is limited by using an elastic material as a member supporting the catch.

According to a sixth aspect of the present invention, in the door locking mechanism according to the fifth aspect , the locking force is adjusted by exchanging the elastic material.

According to a seventh aspect of the present invention, in the door locking mechanism according to the fifth aspect , the catch block has a support portion that supports the elastic material, and the locking force is increased by changing the arrangement position of the support portion. To be adjusted.

The invention according to claim 8 is the door locking mechanism according to any one of claims 1 to 7 , wherein the fitting portion of the latch bolt with the catch has a ridge line on an edge of the door or the door frame. The shape is a substantially parallel chevron shape, and the fitting portion of the catch with the latch bolt is a valley shape substantially corresponding to the chevron shape.

According to a ninth aspect of the present invention, in the door locking mechanism according to the eighth aspect , the angle of the mountain shape of the latch bolt is different from the angle of the valley shape of the catch.

According to a tenth aspect of the present invention, in the door locking mechanism according to the eighth or ninth aspect , the storage opening of the catch block into which the catch is inserted has a gap between the catch and the catch block. Can swing.

The invention of claim 11 is the door locking mechanism according to claim 8 or claim 9 , wherein the storage opening of the latch block through which the latch bolt is inserted has a gap between the latch bolt, The latch bolt can swing.

According to a twelfth aspect of the present invention, in the door locking mechanism according to any one of the eighth to eleventh aspects, the catch has slopes on both outer sides of the valley shape.

According to the first aspect of the present invention, the latch block can be reduced in size, and the latch block can be attached even in the case of a door frame having a narrow construction space. Moreover, the width dimension of the latch block can be reduced by arranging the electric mechanism and the stopper along the movement direction of the stopper.

According to the second aspect of the present invention, switching between the energized locking type / electrolytic locking type can be easily performed by exchanging the stopper.

According to the invention of claim 3 , switching between the energization locking type / electrolytic locking type can be easily performed by changing the arrangement position of the stopper.

According to the invention of claim 4 , the door can be forcibly opened in an emergency or the like with a simple configuration.

According to the invention of claim 5 , a moderate locking force can be given to the door and the door can be forcibly opened. Also, after the forcible opening, the state returns to the state before the forcible opening, so that it can be used repeatedly. it can.

According to the invention of claim 6 , the locking force can be easily adjusted by exchanging the elastic material.

According to the invention of claim 7 , the locking force can be easily adjusted by changing the position of the support portion.

According to invention of Claim 8 , since the shape of the fitting part of a latch bolt and a catch is a mountain-shaped shape and a valley-shaped shape corresponding to each other shape, it opens in both the directions of pushing and pulling the door. Can do.

According to the invention of claim 9 , since the angle of the mountain shape of the latch bolt is different from the angle of the valley shape of the catch, the frictional force caused by contact of the entire surface of the mountain-shaped slope and the valley-shaped slope There is no increase and the door can be opened easily.

According to the invention of claim 10 , it is possible to reduce the initial load when the door is forcibly opened.

According to the invention of claim 11 , it is possible to reduce the initial load when the door is forcibly opened.

According to the invention of claim 12 , since the catch has slopes on both outer sides of the valley shape, the lock mechanism can be operated even when the door is closed while the latch bolt is accidentally locked when the door is opened. Does not break.

  A door locking mechanism according to an embodiment of the present invention will be described with reference to FIGS. The door locking mechanism according to the present embodiment is used, for example, as a partition door that restricts the entrance of a person for the purpose of protecting information in a managed building. FIG. 1 shows the usage state of the door locking mechanism, FIG. 2 shows the configuration of the locking mechanism, FIG. 3 shows the appearance of the latch block, and FIG. 4 shows the appearance of the catch block. The door locking mechanism includes a latch block 1 and a catch block 4. The latch block 1 is attached to the door frame 2 with screws 3 in the vertical direction, and the catch block 4 faces the door 5 against the latch block 1. As shown in FIG. The latch bolt 11 protruding from the latch block 1 and the catch 41 protruding from the catch block 4 are fitted to hold the door 5 in a closed state. The latch block 1 is connected to a controller (not shown) that transmits a locking / unlocking driving signal and a signal line 6.

  The latch block 1 includes a latch bolt 11 that is movable in a substantially horizontal direction, a stopper 12 that moves up and down to prevent or freely move the latch bolt 11, and a solenoid 13 that moves the stopper 12 up and down. Yes. The latch block 1 includes a guide shaft 14 that guides the latch bolt 11 to the latch chassis 18 so as to be movable in a substantially horizontal direction, and a latch spring 15 that biases the latch bolt 11. The latch bolt 11 is guided by the guide shaft 14 and can move in the horizontal direction, and is urged toward the catch block 4 by a latch spring 15. The mechanism for moving the latch bolt 11 has a simple component structure, and the direction of the load applied to the latch bolt 11 by the latch spring 15 can be adjusted by adjusting the positions of the guide shaft 14 and the latch spring 15. As a result, the latch bolt 11 can move smoothly and has high reliability.

  The stopper 12 has a plate shape, and has an opening 121 having a size through which the latch bolt 11 can pass at the center, and the opening 121 is arranged facing the latch bolt 11 side. The stopper 12 moves up and down in two places and is movably supported by a latch bolt frame 16 fixed to the latch chassis 18. When the stopper 12 is in the lower position, the opening 121 is at the same height as the latch bolt 11, so that the latch bolt 11 can pass through the opening 121 and is unlocked, and the stopper 12 is in the upper position. In this case, the opening 121 of the stopper 12 is above the latch bolt 11, the lower portion of the latch bolt 11 abuts against the stopper 12, and the latch bolt 11 is prevented from moving to be locked.

  The solenoid 13 has a drive shaft, and is connected to the upper end of the stopper 12 at the lower end of the drive shaft. Further, the solenoid 13 can move up and down, and is arranged on the latch chassis 18 by a solenoid arrangement screw 17.

  The catch block 4 includes a catch 41 that engages with the latch bolt 11, a leaf spring 43 that biases the catch 41, and a support portion 44 that supports the leaf spring 43. The catch 41 is supported by the catch frame 42 so as to be movable in the horizontal direction, and is urged toward the latch bolt 11 by a leaf spring 43. One end of the leaf spring 43 is joined to the catch chassis 45 and is supported by the support portion 44 so as to be movable in the vicinity of the other end. The support portion 44 can move up and down and is disposed on the catch chassis 45 by a support portion placement screw 46. By moving the arrangement position of the support portion 44 up and down, the position where the plate spring 43 is supported by the support portion 44 changes, and the urging force of the plate spring 43 can be adjusted.

  Clearances are provided between the latch bolt 11 and the storage opening 112 (see FIG. 3D) and between the catch 41 and the storage opening 412 (see FIG. 4C). 11 and the catch 41 can swing, so that they can be smoothly inserted into the storage openings 112, 412. When unlocking or forcibly opening the door, the latch bolt 11 and the catch 41 and the storage openings 112 and 412 can be opened without being twisted.

  The fitting part shape of the latch bolt 11 and the catch 41 will be described with reference to FIG. The fitting portion of the latch bolt 11 has a mountain shape. The fitting portion of the catch 41 has a valley shape substantially corresponding to the mountain shape of the latch bolt 11. Both of these shapes allow the door to open in both the pushing and pulling directions. Further, since the angle of the mountain shape of the latch bolt 11 is larger than the angle of the valley shape of the catch 41, the mountain-shaped inclined surface and the valley-shaped inclined surface do not contact with each other, and the frictional force does not increase. The door can be opened easily.

  Next, the operation of the door locking mechanism according to the present embodiment configured as described above will be described. When unlocked, the solenoid 13 is not energized, and the solenoid 13 moves the stopper 12 to a lower position by a spring (not shown). When the door is opened, the latch bolt 11 and the catch 41 come into contact with each other, and the latch bolt 11 is loaded from the catch 41 toward the inside of the door frame and tends to move toward the stopper 12. At this time, since the stopper 12 is in the lower position, the latch bolt 11 can pass through the opening 121 of the stopper 12. Further, the latch bolt 11 is urged toward the catch 41 by the latch spring 15, but since the force of the latch spring 15 is weak, the latch bolt 11 moves to the stopper 12 side, disengages from the catch 41 and the door. Can be opened.

  At the time of locking, the solenoid 13 is energized, and the solenoid 13 moves the stopper 12 to the upper position. When the door is opened, the latch bolt 11 and the catch 41 come into contact with each other, and the latch bolt 11 is loaded from the catch 41 to the inside of the door frame. The latch bolt 11 tries to move to the inside of the door frame. However, since the stopper 12 is at the upper position, the lower portion of the latch bolt 11 comes into contact with the stopper 12 and is prevented from moving. At this time, the catch 41 also receives a load from the latch bolt 11 and tries to move to the inside of the door, but since it is strongly biased toward the latch bolt 11 by the leaf spring 43, it cannot move to the inside of the door. The latch bolt 11 remains engaged with the catch 41 and the door cannot be opened. However, if the door is opened with a strong force even during locking, the catch 41 receives a strong load from the latch bolt 11, and if the load becomes larger than the urging force of the plate spring 43, the plate spring 43 is deformed and the catch 41 Is pushed into the door and moves, the latch bolt 11 and the catch 41 are disengaged, and the door can be opened. In this way, the door locking mechanism with a simple configuration can open and evacuate the door with a strong force even in a locked state in an emergency such as a fire. Further, since the leaf spring 43 is an elastic material, even after the door is forcibly opened, it can return to the state before the forcible opening and can be used repeatedly.

  Thus, the movement of the latch bolt 11 is prevented by the stopper 12 moving in the direction orthogonal to the movement direction of the latch bolt 11, and the solenoid 13 is arranged in the movement direction of the stopper 12, so that the latch block 1 The width of can be based on the size of the latch bolt 11, the width dimension of the latch block 1 can be reduced, and the size can be reduced. Thereby, the latch block 1 can be attached also to the door frame 5 with a narrow construction space, and the aesthetic appearance at the time of attachment is not impaired.

  Next, the example which changed the shape of the fitting part of the latch bolt 11 and the catch 41 is demonstrated with reference to FIG. In this example, the catch 41 has inclined surfaces 411 on both outer sides of the valley shape. As a result, even when the latch bolt 11 is locked when the door is opened, the catch 41 is loaded and moved from the latch bolt 11 to the inside of the door by the outer slope 411 by closing the door with a strong force. 41 and the latch bolt 11 are fitted, and the door is locked. When the door is opened, the lock mechanism is not damaged even if the door is closed while the latch bolt 11 is locked by mistake.

  Next, a method of switching the locking / unlocking state by exchanging the stopper 12 with a different shape will be described. FIGS. 7A and 7B show the positional relationship between the latch bolt 11 and the stopper 12 and are energized and locked. The former is not energized and the latter is energized. 7 (c) and 7 (d) show the position of the opening 121 in a separate stopper 12 provided on the lower side by the length of the arrow L from that shown in FIGS. 7 (a) and 7 (b). It shows the positional relationship and is an electro-conductive tablet type. The former is when no current is applied, and the latter is when current is applied.

  In FIG. 7A, the stopper 12 is in the lower position, and since the opening 121 is at the same height as the latch bolt 11, it is in an unlocked state, and when the solenoid 13 is energized from this state, FIG. As shown in b), the stopper 12 moves to the upper position by the length of the arrow M, and the lower part of the latch bolt 11 interferes with the stopper 12, so that the stopper 12 is locked. 7C, the stopper 12 is in the lower position, the opening 121 is on the lower side by the length of the arrow L compared to FIG. 7A, and the upper portion of the latch bolt 11 interferes with the stopper 12. Is in a locked state. When the solenoid 13 is energized from this state, as shown in FIG. 7D, the stopper 12 moves upward by the length of the arrow M, and the arrow M and the arrow L have the same length. However, it becomes the same height as the latch bolt 11 and is in an unlocked state. In this way, it is possible to easily cope with the energization locking type / electrolytic locking type by changing the stopper 12.

  Next, a method for switching the locking / unlocking state by changing the arrangement position of the stopper 12 will be described. 8 (a) and 8 (b) are the same as FIGS. 7 (a) and 7 (b), show the positional relationship between the latch bolt 11 and the stopper 12 of the stopper 12, and are energized and locked. When energized, the latter is energized. FIGS. 8C and 8D show the positional relationship when the position of the stopper 12 is changed to the lower side by the length of the arrow L from that shown in FIGS. 8A and 8B. It is an electrolytic tablet type. The former is not energized and the latter is energized.

  In FIG. 8 (c), the upper part of the latch bolt 11 is in a state of interfering with the stopper 12. Therefore, when the solenoid 13 is energized from this state, as shown in FIG. 8 (d), The stopper 12 moves, the opening 121 becomes the same height as the latch bolt 11 and is unlocked. Thus, the correspondence to the energized locking type / electrolytic locking type can be easily performed by changing the arrangement position of the stopper 12. Here, the arrangement position of the stopper 12 is changed by changing the arrangement position of the solenoid 13 to which the stopper 12 is connected by the solenoid arrangement screw 17. Switching between the energization locking type and the energization release type can be easily performed at the construction site by changing the arrangement position of the solenoid 13 without removing parts or the like.

  Next, a method for adjusting the locking force will be described. Replacing the leaf spring 43 (see FIGS. 2 and 4) with a leaf spring 43 having a different spring constant can change the urging force and easily adjust the locking force, so that the locking force depends on the strength of the door at the installation location. The door or the like is not damaged by forcibly opening the door during locking. In addition, since the support portion 44 is moved up and down and fixed by the support portion fixing screw 46 and the position at which the support portion 44 supports the plate spring 43 is changed, the elasticity of the plate spring 43 can be changed and the locking force can be adjusted. It can be done easily at the construction site.

  Next, the system of the door locking mechanism of this embodiment will be described with reference to FIG. This system includes an authentication device 7 that reads the authentication data of a room occupant, a controller 8 that controls the system based on the authentication data and the like, and a lock mechanism control unit 9 that locks / unlocks the door according to instructions from the controller 8. ing. The lock mechanism control unit 9 includes the solenoid 13 in the lock mechanism shown in FIGS. 1 to 4 described above, and a locking sensor and an opening door sensor (not shown). The authentication device 7 is installed at the doorway, reads authentication data from the ID card of the room occupant, and transmits the authentication data to the controller 8. The controller 8 controls the system according to a built-in program. The controller 8 supplies a voltage for driving the solenoid 13 in the lock mechanism control unit 9 to lock and unlock the door, and the lock mechanism control unit 9 locks and unlocks the door and unlocks it. Receives sensor signals for door / closed doors.

  In the door lock mechanism system, the authentication device 7 reads the authentication data from the ID card of the room occupant and transmits the authentication data to the controller 8. The controller 8 controls the locking / unlocking of the door according to the program based on the authentication data transmitted from the authentication device 7, and transmits a door locking / unlocking drive signal to the lock mechanism control unit 9. Further, the controller 8 receives sensor signals of the locked / unlocked state and the open / closed state of the door from the lock mechanism control unit 9, and controls the system of the door lock mechanism.

  In addition, this invention is not restricted to the structure of the said various embodiment, A various deformation | transformation is possible. For example, the shape of the stopper 12 and the latch bolt 11 may be any shape that allows the stopper 12 to prevent or free the movement of the latch bolt 11. In addition, the shape of the opening 121 of the stopper 12 is changed to switch the locking / unlocking state. However, the shape of the latch bolt 11 may be changed, or the solenoid 13 may be turned on / off. The operation at the time may be performed upside down. Further, as the electric mechanism of the stopper 12, an electric mechanism such as a motor may be employed instead of the solenoid 13. In addition, various elastic bodies such as a coil spring can be employed without using the leaf spring 43 to bias the catch 41. The catch 41 may be supported without being urged by other members, and the member that urges or supports the catch 41 is not limited to an elastic body, and supports the catch 41 with a predetermined load. It only needs to be released. In addition, the angle of the mountain shape of the latch bolt 11 is larger than the angle of the valley shape of the catch 41, but the angle of the mountain shape of the latch bolt 11 is smaller than the angle of the valley shape of the catch 41, A similar restraining force may be obtained.

The perspective view which shows the use condition of the locking mechanism of the door which concerns on embodiment of this invention. The block diagram of the locking mechanism of the door. (A) is the external view which attached the protective cover of the latch block, (b) (c) (d) is the external view which removed the protective cover of the latch block. (A) is the external view which attached the protective cover of the catch block, (b) (c) (d) is the external view which removed the protective cover of the catch block. The top view of the fitting part of the latch bolt and catch. The top view of the fitting part of the catch of a different shape which concerns on embodiment of this invention, and a latch bolt. The positional relationship of the latch bolt and stopper which concerns on embodiment of this invention is shown, (a) is a figure which shows the time of non-energization of an energization locking type, (b) is a figure which shows the time of energization of the same type, (c) is electrolysis electrolysis The figure which shows the time of non-energization of a lock | rock type, (d) is a figure which shows the time of energization of the same type. The positional relationship of the latch bolt and stopper which concerns on embodiment of this invention is shown, (a) is a figure which shows the time of non-energization of an energization locking type, (b) is a figure which shows the time of energization of the same type, (c) is electrolysis electrolysis The figure which shows the time of non-energization of a lock | rock type, (d) is a figure which shows the time of energization of the same type. The system block diagram of the lock mechanism of the door of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Latch block 11 Latch bolt 112 Storage opening part 12 Stopper 121 Opening part 13 Solenoid (electric mechanism)
2 Door frame 4 Catch block 41 Catch 411 Slope 412 Storage opening 43 Leaf spring (elastic material)
44 Supporting part 5 Door

Claims (12)

In the door locking mechanism that locks / unlocks the door with an electrical signal,
A latch block disposed on either the door or the door frame, and a catch block disposed on either the door or the door frame opposite to the latch block,
The latch block is
A latch bolt that is urged in one direction to move freely,
A first position that is movable in a direction perpendicular to the moving direction of the latch bolt and that prevents the latch bolt from moving by energization / non-energization of the electric mechanism and a second position that freely moves the latch bolt Having a stopper,
The catch block has a catch that engages the latch bolt;
The door is locked when the stopper is in the first position and the latch bolt is prevented from moving, and the door is locked when the stopper is in the second position and the latch bolt is free to move. Unlocked ,
The door locking mechanism, wherein the electric mechanism and the stopper are arranged in a moving direction of the stopper by the electric mechanism. By replacing the stopper in different shapes, door locking mechanism according to claim 1, characterized in that the freely switch the state of locking or unlocking the door upon energization of the electric mechanism. By changing the position of the stopper, the door locking mechanism according to claim 1, characterized in that the freely switch the state of locking or unlocking the door upon energization of the electric mechanism. The door locking mechanism according to any one of claims 1 to 3 , wherein when the load more than a predetermined value is applied to the door, the catch is displaced and the door is unlocked. The door locking mechanism according to claim 4 , wherein the locking force is limited by using an elastic material as a member supporting the catch. 6. The door locking mechanism according to claim 5 , wherein the locking force is adjusted by exchanging the elastic material. The door locking mechanism according to claim 5 , wherein the catch block includes a support portion that supports the elastic material, and the locking force is adjusted by changing an arrangement position of the support portion. The fitting portion of the latch bolt with the catch is a mountain shape whose ridge line is substantially parallel to the edge of the door or door frame,
Fitting portion between the latch bolt of the catch, the door according to any one of claims 1 to 7, characterized in that it is substantially the corresponding valley shape on the mountain-shaped Lock mechanism. The door locking mechanism according to claim 8 , wherein the angle of the mountain shape of the latch bolt is different from the angle of the valley shape of the catch. Insertion opening of the catch blocks the catch is inserted is a gap between the catch, according to claim 8 or claim 9 wherein the catch is characterized by being adapted to swing Door lock mechanism. Insertion opening of the latch blocks the latch bolt is inserted through, a gap between the latch bolt, according to claim 8 or claim the latch bolt, characterized in that it has adapted to swing 9 The door locking mechanism described in 1. The door locking mechanism according to any one of claims 8 to 11 , wherein the catch has slopes on both outer sides of the valley shape.

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