JP2020051138A - Locking/unlocking device - Google Patents

Abstract

To provide a locking/unlocking device capable of setting an anti-panic state on the front and rear surfaces of a door in an easy-to-understand manner by a simple mechanism.SOLUTION: A locking/unlocking device includes: a front side mechanism 31 and a rear side mechanism 33 for receiving an input from an operation member 19 which are arranged on the front and rear surfaces of a door 21; a built-in key mechanism 25 having an interlocking mechanism which is interlocked with the front side mechanism 31 or the rear side mechanism 33 and which brings the door 21 into an openable state or a non-openable state; a connecting-rocking member 15 which is rockable about a rocking shaft 55 provided in a case 13 having a door end part 39; and a pair of engagement rods 17 arranged symmetrically about the rocking shaft 55 and extending in a direction substantially parallel to each other from the door end part 39 toward a depth direction, the pair of engagement rods being interlocked with and driven by the rocking of the connecting-rocking member 15 to alternately advance or retreat relative to the front side mechanism 31 or the rear side mechanism 33 so that the front side mechanism 31 or the rear side mechanism 33 and the interlocking mechanism switch the openable state or the non-openable state of the door 21 in a selective manner.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a locking and unlocking device.

  For example, it is preferable that a door of a hotel guest room or the like can be opened quickly without an unlocking operation from the room in an emergency. As this type of locking / unlocking device, an anti-panic lock is known (for example, see Patent Documents 1 and 2). The anti-panic lock connects inner and outer drive cams to a handle on the indoor side and a handle on the outdoor side, respectively. These inner and outer drive cams rotate independently of each other. In the anti-panic lock, a locking / unlocking means for restricting only the rotation of the outdoor drive cam is provided. By the way, doors installed in hotel guest rooms and the like have a left opening and a right opening. In other words, there is left and right. Therefore, in the anti-panic lock, the indoor side surface and the outdoor side surface are exchanged depending on whether the door is opened from the left or right side, and a pair of drive cams incorporated in the lock case are selected inside and outside. There is provided a mechanism (internal / external selection mechanism) for setting the distance.

  As the inside / outside selection mechanism, for example, there is a mechanism in which two holding members, for example, male screws, are provided on a front plate, and a pair of driving cams are selectively set inside and outside by two holding members. Further, there is a type in which two vertical levers are provided on the front plate and a link mechanism between the handle cam and the latch stopper is connected or disconnected to selectively set the inside and outside.

JP-A-8-120984 JP 2008-127904 A

  However, if two pressers and two vertical levers are provided corresponding to a pair of drive cams, the number of parts increases and the mechanism becomes complicated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a locking / unlocking device capable of switching an anti-panic state on the front and back surfaces of an opening / closing body with a simple and simple mechanism.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The locking / unlocking device 11 according to claim 1 of the present invention includes an operating member 19 disposed on the front and back surfaces of the door 21,
A front side mechanism 31 and a back side mechanism 33 are provided on the door 21 and receive inputs from the respective operation members 19 on the front side 27 and the back side 29 of the door 21, and are interlocked with the front side mechanism 31 or the back side mechanism 33. A lock mechanism 25 having an interlocking mechanism for setting the door 21 to an openable state or an unopenable state;
A case 13 that incorporates the lock mechanism 25 and has a door tip 39 that is exposed from the door 21;
A locking and unlocking device 11 comprising:
A connecting rocking member 15 that is rotatable about a rocking shaft 55 provided on the case 13;
The connection rocking member 15 is symmetrically positioned around the rocking shaft 55 and extends substantially parallel to each other from the door tip portion 39 toward the back, and interlocks with the rocking movement of the connection rocking member 15. By following the front mechanism 31 or the rear mechanism 33, the door 21 is moved forward or backward alternately, and the door 21 can be opened or opened by the front mechanism 31 or the rear mechanism 33 and the interlocking mechanism. A pair of locking rods 17 for selectively switching the disabled state;
It is characterized by having.

  In the locking / unlocking device 11, the connecting rocking member 15 provided in the case 13 is rocked about the rocking shaft 55. The swinging connection swinging member 15 is configured to move a pair of locking rods 17 extending parallel to each other from the door tip portion 39 toward the back of the case 13 with respect to the front side mechanism 31 or the back side mechanism 33. Are alternately moved forward or backward. The operation of the front mechanism 31 or the rear mechanism 33 is permitted or prevented by the forward or backward movement of each of the pair of locking rods 17. The operation of the front side mechanism 31 or the back side mechanism 33 is stopped by the locking rod 17, thereby cutting off the input of the operation force from the operation member 19 to the interlocking mechanism. That is, the door 21 is set to a state in which it cannot be opened. On the other hand, the front side mechanism 31 or the back side mechanism 33 receives an operation force from the operation member 19 to the interlocking mechanism when the operation is permitted by the locking rod 17. That is, the door 21 can be opened. Therefore, the anti-panic setting state can be selectively switched by a simple mechanism in which the pair of locking rods 17 alternately advance and retreat by the swinging of the connecting swing member 15.

The locking and unlocking device according to claim 2 of the present invention is the locking and unlocking device according to claim 1,
The connection swinging member 15 includes a switching operation portion 59 that can swing around a swinging shaft 55 that is disposed along an axis substantially parallel to the back surface of the door portion 39 that forms the case 13. Features.

  In the locking / unlocking device 11, the connecting swing member 15 is swingably supported by a swing shaft 55 in a direction substantially parallel to, for example, a vertical direction of the case 13 provided on the door 21. Therefore, the connection swing member 15 can swing in the horizontal direction. The switching operation unit 59 of the connection swinging member 15 that swings in the horizontal direction moves in the horizontal direction. That is, the switching operation section 59 can swing toward the front surface 27 or the back surface 29 of the door 21. The swing direction of the connecting swing member 15 can be made to coincide with the direction in which the locking rod 17 projects to the front mechanism 31 or the rear mechanism 33. Accordingly, the front mechanism 31 or the rear mechanism 33 on the side to which the switching operation unit 59 is directed is set to be in a state where the door 21 can be opened by the protrusion of the locking rod 17. Further, the swing shaft 55 can be set in the horizontal direction, and the connecting swing member 15 can be swung in the vertical direction.

The locking and unlocking device 11 according to claim 3 of the present invention is the locking and unlocking device 11 according to claim 1,
Each of the pair of locking rods 17 has an operation end portion 17a that is exposed through a through hole 40 formed in a door portion 39 of the case 13, and the operation of one of the locking rods 17 is performed. The distal end portion 18 of the locking rod 17 moves forward in the depth direction by the pushing of the end portion 17a, and the distal end portion 18 of the other locking rod 17 retreats due to the swing of the connecting rocking member 15. It is characterized by being driven.

  In the locking / unlocking device 11, by pushing the operating end portion 17a of one of the locking rods 17, the distal end portion 18 of the locking rod 17 is advanced in the depth direction. In addition, due to the pushing, the distal end portion 18 of the other locking rod 17 is retracted by the swing of the connecting swing member 15. The forward and backward movements of the locking rod 17 selectively switch the openable state and the unopenable state of the door 21.

The locking and unlocking device 11 according to claim 4 of the present invention is the locking and unlocking device 11 according to any one of claims 1 to 3,
The operation member 19 is rotatably disposed with respect to the door 21, and inputs a rotational force to the front side mechanism 31 and the back side mechanism 33,
The front side mechanism 31 and the back side mechanism 33 include a cam plate 69 connected to the operation member 19 and transmitting rotation.
The locking rod 17 allows or prevents the rotation of the cam plate 69.

  In this locking / unlocking device 11, a cam plate 69 that rotates integrally with the operation member 19 is fixed to each operation member 19 provided on the front and back surfaces of the door 21. Therefore, the operation members 19 on the front and back surfaces of the door 21 are allowed or prevented from rotating by the locking rod 17 via the cam plate 69.

A locking and unlocking device 11 according to claim 5 of the present invention is the locking and unlocking device 11 according to any one of claims 1 to 3,
The front side mechanism 31 and the back side mechanism 33 include a link member for performing or canceling the interlocking with the interlocking mechanism, and the locking rod 17 is disposed to be able to move forward and backward with respect to the linking member. The interlock of the interlock mechanism is performed or released by the forward or backward movement of the stop rod 17.

  In the locking / unlocking device 11, each of the front mechanism 31 and the rear mechanism 33 has a link member. The link member performs or cancels the interlock between the front mechanism 31 or the rear mechanism 33 and the interlock mechanism when the locking rod 17 is moved forward or backward. That is, the interlock between the front mechanism 31 or the rear mechanism 33 and the interlocking mechanism is controlled by the indirect advance / retreat operation of the locking rod 17 via the link member.

  According to the locking / unlocking device according to claim 1 of the present invention, the pair of locking rods are connected by the connecting rocking member, and the front and back sides can be reliably switched by moving forward and backward alternately. The state of anti-panic on the front and back surfaces of the door can be easily switched by a simple and simple mechanism.

  According to the locking / unlocking device according to the second aspect of the present invention, the swing direction of the connecting swing member is set by the switching operation unit, and, for example, by making the swing axis vertical, the anti-panic on the front and back surfaces of the door is set. Can be associated with the direction of the switching operation section of the connecting rocking member.

  According to the locking / unlocking device according to the third aspect of the present invention, when the operating end of one of the locking rods is pushed, the tip of the locking rod is advanced in the depth direction, and the other locking rod is moved forward. The leading end of the stop rod can be retracted, and the forward and backward movements of these locking rods allow the door to be selectively switched between openable and non-openable states.

  According to the locking / unlocking device according to the fourth aspect of the present invention, a simple operation of locking the operating rods on the front and back surfaces of the door to the cam plates provided on each of the front side mechanism and the back side mechanism is provided. The rotation can be controlled by the structure.

  According to the locking / unlocking device according to the fifth aspect of the present invention, the locking rod controls the interlocking permission or inhibition of the interlocking mechanism via the link member, so that the strength of the locking rod can be set small.

It is an exploded perspective view of the locking and unlocking device according to the embodiment of the present invention. It is the perspective view which omitted some locking and unlocking devices shown in FIG. FIG. 3 is an exploded perspective view of a bolt, a front mechanism, and a rear mechanism illustrated in FIG. 2. FIG. 3 is a perspective view of an inside / outside selection mechanism shown in FIG. 2. FIG. 5 is an exploded perspective view of the inside / outside selection mechanism shown in FIG. 4. (A) is a plan view of the inside / outside selection mechanism in which the knob of the lever member is set on the back side, and (b) is a plan view of the inside / outside selection mechanism in which the knob of the lever member is set on the front side. FIG. 7 is a front view of the locking and unlocking device in the state of FIG. It is a front view of the locking / unlocking device of the state of FIG. 6 (b). It is a front view of the locking / unlocking device unlocked by the lock device. It is a top view of the locking / unlocking device in which the knob of the lever member was set at the intermediate position. It is a front view of the locking and unlocking device of another 1st Embodiment. It is a front view of the locking and unlocking device of another 2nd Embodiment. It is the figure which showed the principal part enlarged front view of the locking / unlocking device of other 3rd Embodiment. It is the figure which showed the principal part enlarged front view of the locking / unlocking device of other 4th Embodiment. It is a front view of the locking / unlocking device of other 5th Embodiment. It is a principal part enlarged front view of the locking / unlocking device of other 6th Embodiment. It is a principal part enlarged front view of the locking / unlocking device of other 7th Embodiment. It is a principal part enlarged front view of the locking / unlocking device of other 8th Embodiment.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a locking / unlocking device 11 according to an embodiment of the present invention.
The locking / unlocking device 11 according to the present embodiment has an operating member, an interlocking mechanism, a case 13, a lever member 15 as a connecting swing member, and a locking rod 17 as main constituent members.

  In the present embodiment, the operation member is the lever handle 19. The interlocking mechanism includes the bolt 23 as a main member. Note that the operation member may be a knob.

  The lever handle 19 is provided on the front and back surfaces of the door 21. The lock mechanism 25 is provided inside the door 21, and receives inputs from the respective lever handles 19 on the front surface 27 and the rear surface 29 of the door 21. The lock mechanism 25 includes a front mechanism 31 disposed on the front surface 27 (outdoor surface) of the door 21 and a back mechanism 33 disposed on the back surface 29 (indoor surface) of the door 21. In the present embodiment, the front mechanism 31 includes the first handle cam 35 as a main member. The back side mechanism 33 includes the second handle cam 37 as a main member. The lock mechanism 25 is provided with a bolt 23 that works with the first handle cam 35 or the second handle cam 37 to make the door 21 openable or unopenable.

  The case 13 is formed of a metal rectangular parallelepiped box that is flat in the thickness direction of the door 21. The case 13 is attached to the door 21 such that one long side of the case 13 coincides with the opening of the door 21. The case 13 has a built-in lock mechanism 25 and a front plate 39 as a door end that is exposed at the opening of the door 21.

Each of the lever handles 19 attached to the front and back surfaces of the door 21 has a square shaft 61 inserted into the case 13. This insertion portion is covered by a decorative frame 43. A back plate 45 fixed to the case 13 is sandwiched between the front plate 39 and the case 13. The back plate 45 protrudes a knob 59, a bolt 23, and a trigger 47, which are switching operation units of the lever member 15 described later. A bolt hole 49 for projecting the bolt 23 and a trigger hole 51 for projecting the trigger 47 are formed in the front plate 39. The front plate 39 is fixed to the case 13 with the back plate 45 sandwiched between the front plate fixing screws 53.
In the present embodiment, the bolt 23 having a tapered surface at the tip is shown as a shape. However, the bolt 23 is called a dead locking latch bolt, and has both functions of the latch bolt and the dead bolt. It is a thing.
Here, the bolt 23, which is a member having a function of holding the door 21 in a closed state, is roughly divided into a prismatic or cylindrical shaft-shaped dead bolt, and a latch bolt having a tapered surface at the tip. There is. The deadbolt enters the strike hole on the door frame side by projecting (advancing) from the front end of the door in the closed state. The deadbolt makes it impossible to open the door by fitting into the strike hole, and retreats to strike hole. From the door to allow the door to open. In addition, the latch bolt is such that when the door is closed, the tapered surface comes into contact with the strike plate of the door frame, the latch bolt itself retreats, and then enters the strike hole, and holds the door closed in this entered state. is there.
The dead locking latch bolt of the present embodiment is a bolt 23 that has the two functions of enabling the same operation as the above-described latch bolt and performing the same operation as the above-described dead bolt by the locking / unlocking operation when the door is closed. is there. That is, when the door 21 is closed, it comes into contact with the strike plate in the same manner as the latch bolt, and then enters the strike hole, and at the same time as the door is closed, it further projects (forwards) to extend the length of entry into the strike hole. , Fits into the strike hole on the side without taper. As a result, the door is in the locked state, and the door is in the closed state where the door cannot be opened by operating the handle. The above operation in which the bolt further projects at the same time as when the door is closed may be performed by various means such as a mechanical control mechanism that sets the timing of the retreat operation by abutting the trigger 47 on the strike plate.

FIG. 2 is a perspective view in which a part of the locking and unlocking device 11 shown in FIG. 1 is omitted.
The lever member 15 is located in the vicinity of the back surface of the front plate constituting the case 13. The lever member 15 includes a swing shaft 55 disposed along an axis parallel to the back surface of the front plate. The lever member 15 has a knob portion 59 that penetrates a long hole 57 formed on a back plate 45 provided along the back surface of the front plate, with a direction perpendicular to the axis of the swing shaft 55 as a long axis. The lever member 15 is swingable around the swing shaft 55 along the length of the elongated hole 57. In the lever member 15, the knob 59 is engaged with the back surface of the front plate, and the swing is regulated.

  In the locking / unlocking device 11 of the present embodiment, the swing shaft 55 has the vertical direction as the axial direction, and the lever member 15 is swingable in the horizontal direction.

  Each of the first handle cam 35 and the second handle cam 37 is formed with a square hole 63 into which the square shaft 61 of the shaft 41 of the lever handle 19 is inserted. The first handle cam 35 and the second handle cam 37 can be independently rotated by the lever handles 19 on the front and back surfaces in which the square shaft portions 61 are inserted into the respective square holes 63. When the lever handle 19 on one of the front and rear surfaces is rotated and the first handle cam 35 and the second handle cam 37 are rotated, the bolt 23 is pressed against the engagement plate 65 at the rear end and retracts into the case. That is, they are unlocked.

FIG. 3 is an exploded perspective view of the bolt 23, the front mechanism 31, and the back mechanism 33 shown in FIG.
The separation plate 67 is sandwiched between the first handle cam 35 and the second handle cam 37. The separation plate 67 prevents both the square shaft portions 61 from penetrating to the other side. The lever handle 19 is rotatably disposed with respect to the door 21, and inputs a rotational force to the first handle cam 35 and the second handle cam 37. The first handle cam 35 and the second handle cam 37 include a cam plate 69 connected to the lever handle 19 and transmitting rotation.

  Each of the first handle cam 35 and the second handle cam 37 is urged by a handle cam spring 71 in a rotational direction in which the cam plate 69 approaches the front plate 39. The rotation of the first handle cam 35 and the second handle cam 37 by the handle cam spring 71 is stopped by applying the stopper 73 to the contact pin 75 (see FIG. 7).

FIG. 4 is a perspective view of the inside / outside selection mechanism 77 shown in FIG.
The locking / unlocking device 11 has an inside / outside selection mechanism 77. The inside / outside selection mechanism 77 includes the lever member 15, the swing shaft 55, the substrate 79, the guide shaft 81, the first slide plate 83, and the second slide plate 85 as main members, and performs the first rotation. It includes a blocking cam 87, a second rotation blocking cam 89, and a rotation blocking cam spring 91.

  The first handle cam 35 and the second handle cam 37 include a link member that allows or prevents interlock with the bolt 23. In the present embodiment, the link members are the first rotation prevention cam 87 and the second rotation prevention cam 89. The locking rod 17 is provided so as to be able to advance and retreat with respect to the first rotation preventing cam 87 and the second rotation preventing cam 89. In the locking / unlocking device 11, the interlocking of the bolt 23 is allowed or prevented by the advancement or retreat of the locking rod 17 with respect to the first rotation prevention cam 87 and the second rotation prevention cam 89.

  The lever member 15 has a knob 59. Each of the first slide plate 83 and the second slide plate 85 has the locking rod 17. The locking rod 17 allows or prevents the rotation of the cam plate 69. Each of the first rotation prevention cam 87 and the second rotation prevention cam 89 has a handle cam contact surface 93 and a locking rod contact shaft 95. The first rotation prevention cam 87 and the second rotation prevention cam 89 are in the direction in which the respective locking rod contact shafts 95 approach the front plate 39 (the position where the handle cam contact surface 93 engages with the cam plate 69). The rotation is urged by the rotation preventing cam spring 91.

FIG. 5 is an exploded perspective view of the inside / outside selection mechanism 77 shown in FIG.
The lever member 15 is formed in a substantially triangular plate shape, and a knob 59 projects at a vertex. On the bottom side, a pair of engagement shafts 97 that are spaced apart along the bottom side are vertically provided. The lever member 15 is swingably supported by the board 79 by inserting the swing shaft 55 erected on the board 79 into a shaft hole 99 formed at the center. A guide shaft 81 is erected on the substrate 79 on the opposite side of the front plate 39 with respect to the swing shaft 55.

  The first slide plate 83 and the second slide plate 85 are formed in a strip shape elongated in a direction away from the front plate 39. Each of the first slide plate 83 and the second slide plate 85 has an engagement shaft connecting hole 101 into which an engagement shaft 97 is inserted, at an end portion near the front plate 39. On the first slide plate 83 and the second slide plate 85, a slide guide hole 103 long in a direction away from the front plate 39 is formed on the opposite side of the front plate 39 with the engagement shaft connection hole 101 interposed therebetween. . Further, the first slide plate 83 and the second slide plate 85 are formed near the slide guide hole 103 with the locking rod 17 which stands vertically to the substrate 79 and extends in a direction away from the front plate 39. Have been.

  The locking rods 17 are symmetrically positioned on the main body of the lever member 15 about the pivot shaft 55 and extend in a depth direction from the front plate 39 so as to be parallel to each other. The locking rod 17 alternately projects or retreats with respect to the first handle cam 35 or the second handle cam 37 by following the swing of the lever member 15. Each locking rod 17 selectively switches between an openable state and an openable state of the door 21 by the first handle cam 35 and the bolt 23 or the second handle cam 37 and the bolt 23.

  The first and second slide plates 83 and 85 are mounted on the substrate 79 on which the lever member 15 is supported by the swing shaft 55 so that the inside and outside selection mechanism 77 is stacked. The guide shaft 81 penetrates through the slide guide holes 103 of both the first slide plate 83 and the second slide plate 85 which are overlapped. In the lever member 15, a pair of engagement shafts 97 are inserted into the respective engagement shaft connection holes 101 of the first slide plate 83 and the second slide plate 85.

  The lever handle 19 has a shaft portion 41 whose rotation direction is a direction parallel to the front and back surfaces of the door 21 and whose axis is a direction perpendicular to the front and back surfaces. The shaft 41 is connected to the first handle cam 35 and the second handle cam 37. The locking rod 17 is disposed so as to be able to advance and retreat from a direction substantially perpendicular to the shaft 41, and prevents the rotation of the shaft 41 when the locking rod 17 is retracted.

Next, the operation of the locking and unlocking device 11 will be described.
FIG. 6A is a plan view of the inside / outside selection mechanism 77 in which the knob 59 of the lever member 15 is set on the back side, and FIG. 6B is an inside / outside selection mechanism 77 in which the knob 59 of the lever member 15 is set on the front side. 7 is a front view of the locking and unlocking device 11 in the state of FIG. 6A, and FIG. 8 is a front view of the locking and unlocking device 11 in the state of FIG. 6B.
When the knob 59 of the inside / outside selection mechanism 77 is pivoted toward the back surface 29 (indoor surface) of the door 21 as shown in FIG. 85 recedes in the direction away from the front plate 39, and the locking rod 17 rotates the second rotation preventing cam 89, as shown in FIG. The rotated second rotation prevention cam 89 releases the rotation restriction of the second handle cam 37. That is, the lever handle 19 on the back surface 29 is set to the anti-panic setting state. On the other hand, the first slide plate 83 advances in a direction approaching the front plate 39. The first sliding plate 83 does not allow the locking rod 17 to rotate the first rotation preventing cam 87. As a result, as shown in FIG. 7, the first handle cam 35 is kept in a state in which rotation is prevented by the first rotation prevention cam 87 (non-anti-panic setting). That is, the lever handle 19 on the front surface 27 side of the door 21 cannot be operated.

  On the other hand, when the knob 59 of the inside / outside selection mechanism 77 is swung toward the front surface 27 (outdoor surface) of the door 21 as shown in FIG. The slide plate 83 retreats in the direction away from the front plate 39, and the locking rod 17 rotates the first rotation prevention cam 87 as shown in FIG. The rotated first rotation prevention cam 87 releases the rotation restriction of the first handle cam 35. That is, the lever handle 19 on the front surface 27 is in the anti-panic setting state. On the other hand, the second slide plate 85 advances in a direction approaching the front plate 39. The protruding second slide plate 85 prevents the locking rod 17 from rotating the second rotation preventing cam 89. As a result, as shown in FIG. 8, the second handle cam 37 remains in a state in which rotation is prevented by the second rotation prevention cam 89 (non-anti-panic setting).

FIG. 9 is a front view of the lock / unlock device 11 unlocked by the lock device.
The locking / unlocking device 11 according to the present embodiment has a lock mechanism 25 including an upper half portion of the case 13 and a mechanism portion that is interlocked with a cylinder lock or a thumb turn. When the lock mechanism 25 is rotated, the gear cam 105 is rotated counterclockwise in FIG. As a result, the first rotation preventing cam 87 or the second rotation preventing cam 89 swings clockwise, and the rotation restriction of the first handle cam 35 or the second handle cam 37 is released. That is, in the locking / unlocking device 11, the lever handle 19 on the cylinder lock side or the thumb turn side can be rotated.

Next, the operation of the above configuration will be described.
In the locking and unlocking device 11 according to the present embodiment, the knob 59 of the lever member 15 is disposed in the elongated hole 57 of the back plate 45. In the lever member 15, the knob 59 is swung in the long axis direction of the long hole 57. The lever member 15 oscillated via the knob 59 is used to move a pair of locking rods 17 extending in parallel to each other from the front plate 39 in the depth direction to the first handle cam 35 or the second handle cam. Each is alternately projected or retracted relative to 37. The operation of the first handle cam 35 or the second handle cam 37 is permitted or prevented by each of the pair of locking rods 17 projecting or retracting. The operation of the first handle cam 35 or the second handle cam 37 is blocked by the locking rod 17, thereby cutting off the input of the operating force from the lever handle 19 to the bolt 23. That is, the door 21 is set to a state in which it cannot be opened. On the other hand, the operation of the first handle cam 35 or the second handle cam 37 is permitted by the locking rod 17, so that an operating force is input from the lever handle 19 to the bolt 23. That is, the door 21 can be opened. Therefore, the anti-panic setting state can be selectively switched by a simple mechanism that alternately moves the pair of locking rods 17 by swinging the lever member 15.

  Then, in the locking / unlocking device 11, when the lever member 15 is swung, the knob 59 moves in the direction along the long axis of the long hole 57 formed in the back plate 45. The back plate 45 is covered by a front plate 39 attached to the case 13. When the front plate 39 is attached to the back plate 45, the knob 59 of the lever member 15 is engaged with the back surface of the front plate. As a result, the lever member 15 is held at a position set when the front plate 39 is attached, with the swing thereof being restricted. As a result, the anti-panic setting can be easily performed, and the setting state can be reliably maintained.

  Further, in the locking / unlocking device 11, the lever member 15 is swingably supported by a vertically swinging shaft 55 with respect to the case 13 provided on the door 21. Therefore, the lever member 15 swings in the horizontal direction. The lever member 15 that swings in the horizontal direction moves along the long axis of the elongated hole 57 in which the knob 59 becomes horizontal. That is, the knob 59 swings toward the front surface 27 or the back surface 29 of the door 21. The swing direction of the lever member 15 matches the direction in which the locking rod 17 projects to the first handle cam 35 or the second handle cam 37. As a result, the first handle cam 35 or the second handle cam 37 on the side to which the knob 59 is directed can be opened by the protrusion of the locking rod 17. As a result, the anti-panic setting direction on the front and back surfaces of the door 21 and the direction of the knob 59 of the lever member 15 can be associated with each other, so that the operability at the time of setting is improved and the setting state can be easily checked.

  Further, in the locking / unlocking device 11, a cam plate 69 that rotates integrally with the lever handle 19 is fixed to each lever handle 19 provided on the front and back surfaces of the door 21. Therefore, the rotation of each of the lever handles 19 on the front and back surfaces of the door 21 via the cam plate 69 is permitted or prevented by the locking rod 17. As a result, the respective lever handles 19 on the front and back surfaces of the door 21 are rotated with a simple structure in which the locking rods 17 are locked on the cam plates 69 provided on each of the first handle cam 35 and the second handle cam 37. Can control.

  In the locking / unlocking device 11, each of the pair of lever handles 19 has a shaft 41. The respective locking rods 17 alternately advance and retreat toward the shaft 41. The first handle cam 35 and the second handle cam 37 connected to the respective shaft portions 41 are allowed to rotate by the protruding locking rod 17. The pair of lever handles 19 are allowed to rotate through the shaft 41 by the first handle cam 35 or the second handle cam 37 whose rotation is allowed. As a result, the rotation of the shaft portion 41 of the lever handle 19 can be reliably restricted by the locking rod 17 that moves forward and backward in a tangential direction of a circle around the shaft portion 41.

  Further, in the locking and unlocking device 11, each of the first handle cam 35 and the second handle cam 37 has a link member (a first rotation prevention cam 87 and a second rotation prevention cam 89). The first rotation prevention cam 87 and the second rotation prevention cam 89 allow or prevent the link between the first handle cam 35 or the second handle cam 37 and the bolt 23 when the locking rod 17 advances or retracts. . In other words, the interlock between the first handle cam 35 or the second handle cam 37 and the bolt 23 is controlled by the indirect advance / retreat operation of the locking rod 17 via the first rotation prevention cam 87 and the second rotation prevention cam 89. Is done. As a result, since the locking rod 17 controls the interlocking permission or blocking of the bolt 23 via the first rotation preventing cam 87 and the second rotation preventing cam 89, the strength of the locking rod 17 can be set small.

FIG. 10 is a plan view of the locking / unlocking device 11 in which the knob 59 of the lever member 15 is set at an intermediate position.
In the locking / unlocking device 11, the swing range of the knob 59 includes three positions of two positions at one end and the other end of the elongated hole 57 in the longitudinal direction, and one position between the two positions. The combination of the forward and backward positions of the pair of locking rods 17 differs at each of the three positions of the knob 59.

  In the locking / unlocking device 11, when the locking rod 17 on the side of the front and back surfaces of the door 21 to which the knob 59 is directed advances to the opposite side of the front plate 39, the first handle cam 35 or the second handle cam 37. And the bolt 23 are allowed to interlock with each other. That is, the door 21 can perform two types of anti-panic settings on the front surface 27 or the rear surface 29 to which the knob 59 is directed. Further, when the knob 59 is disposed at the center position along the long axis of the elongated hole 57, the pair of locking rods 17 are set at the same distance between the first handle cam 35 and the second handle cam 37. Become. As a result, the door 21 has two types of anti-panic settings, one in which either of the front and back surfaces is set to anti-panic setting, and the other type in which both the front and back surfaces are set to anti-panic setting or non-anti-panic setting. The settings can be made as follows. As a result, by arranging the knob 59 along the elongated hole 57, the anti-panic state on the front and back surfaces of the door 21 can be set in three ways.

  Therefore, according to the locking / unlocking device 11 according to the present embodiment, the anti-panic state on the front and back surfaces of the door 21 can be easily switched by a simple and simple mechanism.

  Note that the present invention is not limited to the above embodiment. Technical ideas that can be changed by those skilled in the art based on the description in the present specification using known techniques are included in the scope for which protection of the present invention is sought.

  In particular, the inside / outside selection mechanism 77 shown in FIG. 5 in the above embodiment of the present invention can be incorporated into various lock mechanisms other than the above-described lock mechanism 25, that is, the lever member 15 and the pair of The locking rods 17 are disposed on the case 13, and the swinging operation of the lever member 15 causes the pair of locking rods 17 to alternately protrude or retreat, respectively, to be in an openable state such as an unlocked state. It is possible to selectively switch between an unlocked state such as a locked state and the like. Hereinafter, examples of various lock mechanisms will be described, and other embodiments 1 to 8 in which the inside / outside selection mechanism 77 of the present invention is incorporated will be described. The description of the same parts as those in the above-described embodiment will be omitted and the same reference numerals will be given.

FIG. 11 is a front view of another embodiment of the locking and unlocking device.
For example, as shown in FIG. 11, the interlocking cam 201 is located at the tip of the cam plate 69 of the handle cam 35, and the interlocking cam 201 is in contact with the interlocking cam 201. The lock arm 205 is arranged on the upper surface of the bolt 23 so as to advance and retreat and disengage by swinging up and down. Above the lock arm 205, the inside / outside selection mechanism 77 of the present invention is arranged. A slider 207 is connected to the locking rod 17 of the inside / outside selection mechanism 77, and a lower-side swing arm 209 is swingably provided at the lower end of the slider 207. By actuating the lever member 15 of the inside / outside selection mechanism 77, the locking rod 17 is caused to protrude or retreat, and the slider 207 connected thereto slides in the horizontal direction in the figure. By this sliding movement, the swing arm 209 at the lower end becomes a position interposed between the lock arm 205 and the linking cam 203 (two-dot chain line in the drawing) or a retracted position (solid line in the drawing). When the swing arm 209 is moved in the protruding direction by the locking rod 17, the swing of the link cam 203 is transmitted from the swing of the cam plate 69 and the interlock cam 201, and the swing is transmitted to the lock arm 205. Tell Accordingly, the lock arm 205 is separated from the bolt 23 and does not interfere with the operation of the bolt 23. That is, the rotation of the handle cam 35 allows the bolt 23 to move backward. In the other first embodiment, the swing arm 209 provided inside the lock mechanism 25 and the swing arm 209 which is a part of the interlock mechanism constituted by the interlock cam 201 and the interlock cam 203 are selected from inside and outside. By linking with the locking rod 17 of the mechanism 77 and detaching or interposing the interlocking mechanism constituted in a linked manner, that is, arranging or removing an intermediate member for transmitting the interlocking, switching of the operation. Can be performed.

FIG. 12 is a front view of a locking / unlocking device according to another second embodiment.
As shown in FIG. 12, the lock mechanism 25 is provided with a vertically movable linking rod member 301 extending vertically, and an upper end of the linking rod member 301 is provided with an interlocking pin 303. A swing plate 305 is provided at the lower end. The interlocking pin 303 at the upper end is engaged with the locking rod 17 of the inside / outside selection mechanism 77, and more specifically, slidably moves on the oblique side 17 </ b> A formed on the upper edge of the locking rod 17. A pin 303 is arranged. That is, the linking rod member 301 moves up and down in the case 13 by the linking pin 303 sliding on the oblique side 17A in conjunction with the horizontal movement of the locking rod 17. The swing plate 305 at the lower end has a substantially center connected to the lower end of the linking rod member 301 by a shaft 307, and one end 305a extending rightward in the drawing has a substantially half-moon shape with a curved lower surface. The end side is a short pressing piece 305b. The one end side 305a is located above the cam plate 69, and is freely movable toward and away from the cam plate 69. The pressing piece 305b contacts a pin 311 provided at the base end of the stopper 309. The stopper 309 is provided so as to be able to swing substantially at the center of the swing shaft 313, and is arranged above the bolt 23 along the bolt 23. A coil spring 315 is attached to the swing shaft 313. The coil spring 315 has an urging force for engaging the tip of the stopper 309 with the step 317 of the bolt 23.
In the locking / unlocking device configured as described above, the locking rod 17 is slid by the lever member 15 so that the linking rod member 301 is lowered (solid line in the drawing) and raised (double-dashed line in the drawing). The position of the swing plate 305 with respect to the cam plate 69 is thereby switched. When the linking rod member 301 shown by the solid line in FIG. 12 is lowered, the swing plate 305 contacts the cam plate 69. By the rotation of the cam plate 69, the swing plate 305 swings about the shaft 307, and the pressing piece 305b pushes the stopper 309 via the pin 311 against the urging force of the spring 315, and the tip of the stopper 309 becomes the step of the bolt 23. It is retracted from the part 317 and swung to a position where it is not locked. Therefore, the bolt 23 can be retracted by the rotation of the cam plate 69. On the other hand, when the linking member 301 is raised by the lever member 15 via the locking rod 17 (indicated by a two-dot chain line in the figure), the swing plate 305 is separated from the cam plate 69. As a result, the stopper 309 is engaged with the stepped portion 317 of the bolt 23 by the biasing force of the spring 315. That is, the bolt 23 is maintained in the protruding state, and the cam plate 69 cannot be rotated.
In the other second embodiment, the linking rod member 301 disposed inside the lock mechanism 25 is configured to be able to move up and down at the oblique side 17A of the locking rod 17, and the swinging rod provided on the linking rod member 301 is provided. The arrangement position of the moving plate 305 can be switched, and whether or not the bolt 23 advances or retreats can be determined by the switching operation of the stopper 309, and whether or not the cam plate 69 can rotate can be determined. Although it is the same as the other first embodiment described above, the sliding movement direction of the locking rod 17 is changed to the vertical direction which is the orthogonal direction by the oblique side 17A formed on the locking rod 17, and the The direction of movement is changed, thereby enabling selective switching.

FIG. 13 is an enlarged front view of a main part of a locking and unlocking device according to another third embodiment.
Further, as shown in FIG. 13, in the lock mechanism, the inner / outer selection mechanism 77 is disposed below the bolt 23, the lever member 15 is located below the head of the bolt 23, and the tip of the locking rod 17 is It is facing nearby. In this locking / unlocking device, the retractor 401 is swung by the rotation of the handle cam 35, and the bolt 23 is moved forward and backward through the engagement plate 65 of the bolt 23 engaged with the retractor 401. The handle cam 35 has an engagement recess 407 that is recessed in a direction perpendicular to the axial direction. A connection pin 415 is provided on the locking rod 17 of the inside / outside selection mechanism 77, and is slidable in an inclined hole 413 of an interlocking plate 403 that is slidably arranged in a vertical direction orthogonal to the locking rod 17. It is inserted in. A pin 412 protrudes from the interlocking plate 403 and locks with an interlocking piece 411 of an interlocking arm 409 disposed between the inside / outside selection mechanism 77 and the handle cam 35. The interlocking arm 409 has a cylindrical base, is rotatably provided on a shaft 417 provided in the case 13, and has an interlocking piece 411 and an interlocking arm 419 protruding from the outer surface. The lock arm 405 is connected to the interlocking arm 419. The lock rod 405 is provided so as to be able to advance and retreat with respect to the handle cam 35, and is arranged so as to be fitted into or disengaged from the engagement recess 407 of the handle cam 35. In the locking / unlocking device configured as described above, the locking rod 17 is slid by operating the lever member 15, and the up-and-down movement of the interlocking plate 403 interlocking with the locking lever 17 rotates the interlocking arm 409 via the interlocking piece 411. The lock arm 419 is swung by this rotation, and the lock rod 405 slides. The lock rod 405 is fitted into the engagement concave portion 407 of the handle cam 35 by being advanced, thereby suppressing the rotation of the handle cam 35. When the lock rod 405 is retracted, the inhibition of the handle cam 35 is released, and the handle cam 35 becomes rotatable. That is, the rotation of the handle cam 35 causes the retractor 401 to swing, and allows the bolt 23 to retreat.
In the third embodiment, when the inside / outside selection mechanism 77 is operated, the locking rod 17 projects or moves backward, so that the interlocking plate 403, the interlocking arm 409, and the lock rod 405 are operated, and the lock rod 405 is moved. By being fitted or retracted to the handle cam 35, the rotation of the handle cam 35 is directly restricted or released. As a result, the operation of the operation member such as the handle lever can be invalidated, the normal operation can be performed, and these operations can be switched.

FIG. 14 is an enlarged front view of a main part of a locking and unlocking device according to another fourth embodiment.
Further, as shown in FIG. 14, as a configuration of the handle cam 35 similar to that of FIG. 13, in this example, the tip of the locking rod 17 is directly fitted into or retracted into the engagement recess 501 of the handle cam 35. In addition to being simpler than the configuration shown in FIG. 13, the locking rod 17 can switch the operation of the handle cam 35, and the swing of the retractor 503 can be restricted or released.

FIG. 15 is a front view illustrating a locking and unlocking device according to another fifth embodiment.
As shown in FIG. 15, the lock mechanism 25 is provided with an electromagnetic plunger 601, and the driving piece 605 connected to the tip of the operating piece 603 by the reciprocating operation of the operating rod 603 of the electromagnetic plunger 601. It is movable in the middle and left and right directions. The driving piece 605 is provided using a fixed shaft 607 fixed to the case 13 as a guide. A driven piece 609 is provided on the fixed shaft 607 so as to be swingable. The driven piece 609 is formed with a guide groove 611 having a U-shape along the longitudinal direction, and a protruding piece 613 is provided at a lower end thereof. The projection 613 engages with a movable pin 617 provided at the upper end of the L-shaped lock member 615. The center of the lock member 615 is pivotally supported by a swing shaft 621 and is swingable, and the lower end 619 is freely engageable with and disengageable from the tip of a cam plate 69 of a handle cam (not shown). The inside / outside selection mechanism 77 is arranged above the electromagnetic plunger 601. In the locking piece 17 in this example, an inclined side 17A is formed on the upper edge of the tip. A lever 623 is provided near the locking piece 17 and above the locking piece 17. The lever 623 has its base end pivotally supported by a shaft 625 and is capable of swinging at its tip end. An elevating lever 629 is connected to a tip of the lever 623 via a connecting pin 627. A pin 631 is provided in the middle of the lever 623, and slidably abuts the inclined side 17A of the locking rod 17. The elevating lever 629 is provided with a sliding pin 633, and the sliding pin 633 is slidably inserted into the guide groove 611 of the driven piece 609.
In the fifth embodiment, the locking piece 17 is slidably moved forward and backward by the operation of the lever member 15, whereby the lever 62 is swung. As shown in FIG. 15A, when the locking piece 17 advances and the tip of the lever 623 is at the lower position, the elevating lever 629 is lowered, and the protrusion is caused by the bending of the guide groove 611 of the driven piece 609. The piece 613 is in a substantially vertical position, and the lock member 615 is tilted, whereby the lock member 615 and the cam plate 69 are engaged. That is, the swing of the cam plate 69 is restricted, and the rotation of the handle cam is restricted. For this reason, the opening operation of the door is disabled, and the opening is disabled. On the other hand, when the locking rod 17 is retracted as shown in FIG. 15B, the lever 623 swings, and the elevating lever 629 is raised. Then, the sliding pin 633 is moved upward, and the driven piece 609 is swung. Thereby, the lock member 615 is swung, and the engagement state with the cam plate 69 is released. That is, the handle cam becomes rotatable. For this reason, the door can be opened, and the door can be opened. In this manner, by operating the lever member 15 of the inside / outside selection mechanism 77, it is possible to switch whether or not the cam plate 69 can rotate.

FIG. 16 is an enlarged front view of a main part of a locking and unlocking device according to another sixth embodiment.
As shown in FIG. 16, an L-shaped engagement piece 703 whose tip is bent downward is provided on a side plate 701 that supports the slide of the bolt 23. The inside / outside selection mechanism 77 is provided below the bolt 23. A swing lock piece 705 is provided on the tip side of the locking piece 17. The swing lock piece 705 is provided at the base end of the cam plate 69 of the handle cam 35 so as to be swingable via a pivot 707. The rocking lock piece 705 has an upwardly hook-like tip and an engagement recess 709. The engagement recess 709 is disposed close to the tip of the locking piece 17, and is engaged with and disengaged from the locking piece 17. It is free. In the sixth embodiment, when the locking piece 17 is moved forward and backward by operating the lever member 15, the locking piece 17 is disengaged from the swing lock piece 705. When the locking piece 17 protrudes and slides rightward in the figure, the locking piece 17 is engaged with the swing lock piece 705 as depicted by a two-dot chain line, and the tip of the swing lock piece 705 is lowered. Then, the tip of the swing lock piece 705 does not engage with the engagement piece 703. On the other hand, when the locking piece 17 is retracted, the tip of the swing lock piece 705 is at the raised position, and thereby engages with the engagement piece 703. That is, the rotation of the handle cam 35 is restricted. The rotation of the handle cam 35 performs a pull-in operation of a latch bolt (not shown) separate from the bolt 23, and enables the door to be opened. That is, when the front mechanism and the rear mechanism are configured as in the above-described embodiment, the rotation of the handle cam 35 is enabled on one side, and the rotation is disabled on the other. In this way, the opening and closing operation of the door can be switched by the forward and backward operation of the locking piece 17.

FIG. 17 is an enlarged front view of a main part of a locking / unlocking device according to another seventh embodiment.
As shown in FIG. 17, a substantially L-shaped engagement plate 801 is interlocked to the handle cam 35, and an operation lever 803 is connected to the engagement plate 801. The operating lever 803 has a distal end 805 extending vertically upward, and is locked to a proximal end of the bolt 23. That is, the handle cam 35 is rotated by an operation using an operating member such as a lever handle, and the operating lever 803 is swung through the engaging plate 801 which swings in conjunction with the operation to perform the retreat operation of the bolt 23. It has become. The inside / outside selection mechanism 77 is arranged below the bolt 23. In this embodiment, a pressing portion 807 extends from the tip of the locking rod 17. A rocking piece 809 is provided below the inside / outside selection mechanism 77. The swinging piece 809 has a base end pivotally supported and a tip end swingable in a vertical direction, a lower surface gently curved toward the tip end, and a contact piece 811 at the tip end in an upward direction. It is projected. The contact piece 811 faces the pressing portion 807. A locking piece 813 is provided between the swinging piece 809 and the upper edge of the engagement plate 801. The locking piece 813 has a base portion pivotally supported at an intermediate portion of the operation lever 813, and has an L-shaped tip, so that the locking piece 813 is detachably engageable with the upper edge recess 815 of the engagement plate 801. The upper surface of the locking piece 813 can freely contact and separate from the lower surface of the swinging piece 809.
In the locking / unlocking device configured as described above, when the locking rod 17 is advanced by the lever member 15 as shown in FIG. 17, the pressing portion 807 pushes the contact piece 811 and the tip side of the swinging piece 809. Is swung downward. The rocking piece 809 rocks the locking piece 813 on the lower surface in a direction of pushing down. The locking piece 813 has its tip engaged with the concave portion 815 of the engaging plate 801, thereby bringing the operating lever 803 and the engaging plate 801 into an interlocking connection state, and can simultaneously swing around the coaxial 817. That is, the rotation of the handle cam 35 causes the engagement plate 801 to swing, and at the same time, causes the operating lever 803 to swing, so that the tip 805 performs the pull-in operation of the bolt 23. On the other hand, if the locking rod 17 retreats (two-dot chain line in the drawing) and the swinging piece 809 does not swing, the locking piece 813 does not swing downward and separates from the upper edge of the engagement plate 801. Position. Then, the engagement plate 801 that swings by the rotation of the handle cam 35 swings around the coaxial shaft 817, but does not swing because it is not connected to the operation lever 803. As a result, the operation of pulling in the bolt 23 is not performed. As described above, it is possible to switch whether the connection between the operation lever 813 and the engagement plate 801 is performed or not by the reciprocation of the locking rod 17.

FIG. 18 is an enlarged plan view of a main part of a locking and unlocking device according to another eighth embodiment.
As shown in FIG. 18, the connecting swing member 15 is provided inside the case 13, and a pair of locking rods 17 provided in the case 13 has an operation end 17 a, which is one end, at the door end. It is configured to be exposed through a through hole 40 formed in the front plate 39 as a part. That is, in the other eighth embodiment, the inside / outside selection mechanism 77 in each of the above embodiments is arranged upside down. The connection swinging member 15 is located at the back of the case 13, is configured to be pivotally supported at the center, and has the axis line in the vertical direction. The pair of locking rods 17 have distal ends 18 as the other ends linked to the both ends of the connection swinging member 15. The pair of locking rods 17 are guided by a guide shaft 81 erected on the substrate 79, and are arranged with a swing shaft 55 that supports the connecting swing member 15 interposed therebetween. The edge of the connecting rocking member 15 and the tip 18 of the locking rod 17 are in contact with the contact shaft 96. The contact shaft 96 is provided on a member (not shown) similar to the first rotation prevention cam 87 and the second rotation prevention cam 89 described above, and the direction in which each contact shaft 96 approaches the front plate 39. May be constantly biased by a cam spring (not shown).
In the locking / unlocking device configured as described above, for example, as shown in FIG. 18A, the operation end portion 17 a on the upper side in the figure, which is one of the locking rods 17, is pushed and pushed into the through hole 40. By the operation, the distal end portion 18 of the locking rod 17 moves forward in the depth direction of the case 13, and swings the connecting rocking member 15 connected to the distal end portion 18. The connecting rocking member 15 rocks about the rocking shaft 55, and the rocking causes the distal end portion 18 of the other locking rod 17 to be driven to retreat. The operating end 17a of the other locking rod 17 projects from the through hole 40. Similarly, as shown in FIG. 18B, by operating the other locking rod 17, the operating end 17 a of the one locking rod 17 is driven to protrude from the through hole 40. As a result, the contact shaft portions 96 are interlocked, and a cam, a link member, etc. (not shown) are operated by the alternate movement of the contact shaft portions 96, and the door 21 can be opened similarly to the above-described embodiments. And the release impossible state is selectively switched.
Although the pair of locking rods 17 are described as being operated so as to push the operation end 17a into the case 13, the operation of pulling out the operation end 17a operates in the same manner. Since the pair of locking rods 17 are interlocked and connected by the connection swinging member 15, if one of the front ends 18 advances in the case 13, the other front end 18 retreats. The pair of locking rods 17 are alternately operated by the connection swinging member 15 to form the inner / outer selection mechanism 77, and the swinging causes the pair of locking rods 17 to alternately project or retreat, respectively. It is possible to selectively switch between an openable state such as a locked state and a non-openable state such as a locked state.

Based on the above description, this specification includes the following items.
(1) operating members disposed on the front and back surfaces of the door,
A first handle cam and a second handle cam that are provided on the door and receive inputs from the respective operation members on the front surface and the back surface of the door, and are interlocked with the first handle cam or the second handle cam; A locking mechanism including a retractable bolt that realizes an unlocked state or a locked state of the door,
A locking and unlocking device comprising:
A case provided on the door, incorporating the locking mechanism, and having a front plate that is exposed at a front end of the door;
A backing plate provided along an axis parallel to and perpendicular to the back surface of the front plate and located near the back surface of the front plate constituting the case; An operating rod having a tip penetrating a long hole formed with a horizontal direction perpendicular to the axis as a long axis, and capable of swinging horizontally in the longitudinal direction along the length of the long hole around the swing axis. A lever member,
The main body of the lever member is symmetrically positioned around the swing axis, and is constituted by a pair of swingably and interlockingly linked axes along an axis parallel to the axis of the swing axis. The first handle cam and the second handle cam protrude or retreat with respect to the first handle cam and the other with respect to the second handle cam. When the first handle cam or the second handle cam is allowed to move in the retracted state, the first handle cam and the bolt or the second handle cam and the second handle cam are selectively switched to be linked to each other. A locking rod that allows the locked state of the door to be continued on any one surface side, and allows an interlocking operation by the operation member on any other surface side;
A locking / unlocking device comprising:
According to this locking and unlocking device, the anti-panic state on the front and back surfaces of the door can be easily and easily switched by a simple and simple mechanism by the same operation as the locking and unlocking device according to the above-described embodiment.

11 Locking / unlocking device 13 Case 15 Linking swing member (lever member)
17: Locking rod 17a: Operating end 18: Tip 19: Operating member (lever handle)
21 ... door 23 ... interlocking mechanism (bolt)
25 lock mechanism 27 front surface 29 back surface 31 front side mechanism 33 back side mechanism 35 first handle cam 37 second handle cam 39 door end (front plate)
41: Shaft 45: Back plate 55: Swing shaft 57: Slot 59: Switching operation unit (knob)
69: cam plate 87: link member (first rotation prevention cam)
89 ... Link member (second rotation prevention cam)

Claims (5)

Operating members arranged on the front and back surfaces of the door,
A front side mechanism and a back side mechanism are provided on the door and receive inputs from the respective operation members on the front side and the back side of the door, and the door can be opened or opened in conjunction with the front side mechanism or the back side mechanism. A lock mechanism having an interlocking mechanism for disabling the lock mechanism,
A case incorporating the lock mechanism and having a door end portion exposed from the door,
A locking and unlocking device comprising:
A connecting rocking member that is rockable around a rocking shaft provided in the case,
The connection swing member is symmetrically positioned around the swing axis and extends substantially parallel to each other from the door tip toward the back, and is interlocked and driven by the swing of the connection swing member. A pair of the front mechanism or the rear mechanism alternately advance or retreat, respectively, and selectively switch an openable state or an unopenable state of the door by the front side mechanism or the back side mechanism and the interlocking mechanism. A locking rod,
A locking / unlocking device comprising:   The said connection rocking | fluctuation member is equipped with the switching operation part which can rock | fluctuate centering | focusing on the rocking | fluctuation axis arrange | positioned by the substantially parallel axis line to the back surface of the door-tip part which comprises the said case. 2. The locking and unlocking device according to 1.   The pair of locking rods each include an operating end that is exposed through a through hole formed in a door portion that constitutes the case, and is used to push the operating end of one of the locking rods. 2. The tip of the locking rod is moved forward in the depth direction, and the tip of the other locking rod is moved backward by the swing of the connecting rocking member. Locking and unlocking equipment. The operation member is disposed rotatably with respect to the door, and inputs a rotational force to the front mechanism and the back mechanism,
The front-side mechanism and the back-side mechanism include a cam plate that is connected to the operation member and transmits rotation.
The locking / unlocking device according to any one of claims 1 to 3, wherein the locking rod allows or prevents rotation of the cam plate.   The front-side mechanism and the back-side mechanism include a link member that performs or cancels the interlocking with the interlocking mechanism, and the locking rod is disposed so as to be able to advance and retreat with respect to the link member, and The locking / unlocking device according to any one of claims 1 to 3, wherein the interlocking mechanism is interlocked or released by advancing or retreating.

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