JP4884957B2 - Locking and unlocking mechanism of face lock - Google Patents

Description

  The present invention relates to a surface-coated lock that regulates the opening of a door by projecting a front end of a latch bolt or the like as a bolt that advances and retreats from a lock case fixed to a door surface from a door opening / closing end and locking it to a locked body. The locking / unlocking mechanism is suitable for use on, for example, a full glass door.

In recent years, glass doors have been frequently used due to the improvement in strength of glass materials. When the full glass door is installed, for example, at the entrance of an office building or the entrance of a store, it is necessary to provide a locking device. Conventionally, when a locking device is provided on this type of full-surface glass door, it has been common to provide the locking device on a hanging metal fitting, an upper collar, a lower collar, or a metal frame attached to the center. However, if a metal frame portion is provided in order to provide a locking device, the design of the folded glass door may be lowered, and it is preferable that these metal frame portions are not provided. In order to solve such a problem, the door lock of Patent Document 1 in which only the locking device is attached to the entire glass door using an attachment hole directly drilled in the door glass material has been proposed. According to this door lock, it is possible to attach only the door lock to the open / close end of the full surface glass door without attaching a metal frame part for providing a locking device to the full surface glass door, without impairing the design of the full surface glass door, I was able to improve the appearance.
JP 2002-523660 Gazette

  Since the above-described conventional door lock can be attached using an attachment hole directly drilled in the door glass material, it is not necessary to deteriorate the design of the entire glass door as compared with the case of attaching a metal frame portion. However, since it is a full-surface glass, it is preferable that the exclusive area of the locking device is as small as possible when designability, designability, and the like are further added. For this reason, providing both a latch bolt and a dead bolt as in a normal locking / unlocking mechanism is disadvantageous for making the apparatus compact. In addition, since this type of surface-coated lock is made of glass, the dead bolt protrudes when the door is opened, and if the door is closed with the dead bolt protruding, the reaction force at the time of collision There is a possibility that the surface lock fixing part may be damaged. When the adherend is a double-opened full-surface glass, the door on the side opposite to the door provided with the face lock may be damaged by the tip of the protruding dead bolt. Further, if the rotation operation member such as a lever handle is rotatable in the locked state, an unnecessary door opening operation is performed even though the lever is locked, and an unnecessary operation load is applied to the surface lock. As a result, it was a factor that deteriorated durability.

  The present invention has been made in view of the above situation, and a first object of the present invention is to provide a surface-locking locking / unlocking mechanism that can be locked / unlocked with a small number of components, thereby improving design. It is in. The second object is to provide a locking / unlocking mechanism with a face lock that can restrict the protrusion of a bolt in an unnecessary locked state when the door is opened, and to improve safety. A third object is to provide a surface-locking locking / unlocking mechanism in which the locking / unlocking state can be easily understood, thereby improving durability.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
According to the first aspect of the present invention, the locking / unlocking mechanism of the face-locking device is configured such that the tip 25 a of the bolt 25 that advances and retreats from the lock case 21 fixed to the door surface 37 protrudes from the door opening / closing end 32 to the locked body 17. A locking / unlocking mechanism of the face-attached lock 100 that restricts the opening of the door 11 by locking,
Opening / closing operation members 23A and 23B that are rotatable through a shaft portion 35 passing through the door 11 and the lock case 21 in a direction perpendicular to the door surface 37;
An interlocking mechanism portion 40 that is connected to the shaft portion 35 of the opening / closing operation members 23A and 23B and interlocked to the bolt 25, and slides the bolt 25 in the retracting direction in the case 21;
An unlocking / unlocking operation member 27 disposed in the vicinity of the interlocking mechanism portion 40 and in the vicinity of the bolt 25;
A click cam 151 made of a cylindrical member arranged on the shaft 71 of the locking / unlocking operation member 27 and rotated in the lock case 21 following the locking / unlocking operation member 27;
The click cam 151 is engaged with the outer peripheral surface of the click cam 151, is driven to rotate in the locking direction of the click cam 151, and is slidable perpendicularly to the advancing and retreating direction of the bolt 25. A locking cam 165 for preventing
It is characterized by comprising.

  In this surface-locking locking / unlocking mechanism, when the locking / unlocking operation member 27 is operated and the click cam 151 is brought into the locking position in the closed state, the lock cam 165 is moved backward by the rotation of the click cam 151. It is moved to the position where As a result, the latch 25 works as a dead bolt and can be locked and unlocked with a small number of components.

The locking / unlocking mechanism of the face-locking according to claim 2 is engaged with the interlock mechanism portion 40 following the rotation of the click cam 151 to the locking position, and the shaft portion 35 of the opening / closing operation members 23A, 23B. A lock block 181 for restricting rotation;
It is characterized by comprising.

  In this surface-locking locking / unlocking mechanism, when the locking / unlocking operation member 27 is operated and the click cam 151 is rotated to the locking position, the lock block 181 is moved to a position where it is locked to the interlocking mechanism 40. It moves, that is, the rotation of the shaft portion 35 of the opening / closing operation members 23A, 23B is restricted. Thereby, in the locked state, the opening / closing operation members 23A and 23B are made non-rotatable, so that it is easily understood that the locked state is achieved.

The lock / unlock mechanism for the face-locking according to claim 3 is provided with a trigger 31 that is slidable in the lock case 21 in the same direction as the bolt 25 and is urged in a protruding direction from the door opening / closing end 32;
A stopper protrusion 171a that protrudes from the trigger 31 and is locked to the click cam 151 by protruding the trigger 31 and restricts the rotation of the click cam 151;
It is characterized by having.

  In this surface-locking locking / unlocking mechanism, the trigger 31 protrudes when the door is opened, and the protrusion of the trigger 31 restricts the rotation of the click cam 151 by the stopper protrusion 171a. Accordingly, when the door is opened, the locking / unlocking operation member 27 connected to the click cam 151 cannot be operated, and the protrusion of the latch 25 serving as a dead bolt in the unnecessary locked state when the door is opened is restricted. That is, the latch 25 is not in a locked state in which the backward movement is restricted when the door is opened.

  According to the locking / unlocking mechanism for a face-locking device according to the first aspect of the present invention, the front end of the latch that advances and retreats from the lock case fixed to the door surface protrudes from the door opening / closing end and is locked to the locked body. Thus, in the locking / unlocking mechanism of the face-locking that regulates the opening of the door, the cylindrical member is formed in a shape that is externally disposed on the shaft body of the locking / unlocking operation member, and is locked by being driven by the locking / unlocking operation member. A click cam that is rotated within the case, and a lock cam that is disposed at a position that prevents the latch from moving backward by following the rotation of the click cam in the locking direction, and each disposed position is configured as a proximity position. Therefore, when the locking / unlocking operation member is operated and the click cam becomes the locking position in the closed state, the lock cam is moved to a position for preventing the latch from moving backward by the rotation of the click cam. As a result, the latch works as a dead bolt, and can be locked and unlocked with a small number of components. As a result, the surface lock can be made compact, and the design can be improved.

  According to the locking / unlocking mechanism of the face-locking according to claim 2, the click cam is rotated to the locking position and is locked to the interlocking mechanism portion to be disposed at a position for restricting the rotation of the shaft portion of the opening / closing operation portion. When the click cam is rotated to the locked position by operating the locking / unlocking operation member, the lock block moves to a position to be locked to the interlocking mechanism portion, and the rotation etc. The movement, that is, the rotation of the opening / closing operation member is restricted. This makes it impossible to rotate the opening / closing operation member in the locked state, so that it can be easily informed that it is in the locked state, and improper opening operation is performed despite being locked. It is possible to prevent an unnecessary operation load from being applied to the lock. As a result, the durability of the surface lock can be improved. Further, as described above, the handle is arranged so that the rotation operation is disabled, so that it is possible to concentrate on only the opening / closing operation without unnecessarily moving at the time of opening / closing.

  According to the locking / unlocking mechanism of the face-locking according to claim 3, the trigger is slidably provided in the lock case and is urged in the protruding direction from the door opening / closing end, and the trigger is protruded from the trigger to protrude. And a stopper projection arranged at a position for restricting the rotation of the click cam, the trigger protrudes when the door is opened, and the protrusion of the trigger restricts the rotation of the click cam. Therefore, when the door is opened, the operation of the locking / unlocking operation member coupled to the click cam becomes impossible, and it is possible to restrict the protrusion in the unnecessary lock state when the latch that functions as a dead bolt is opened. As a result, it is possible to prevent surface locking or damage to the door caused by closing the door by protruding the latch in a locked state, and safety can be improved.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a surface-locking locking / unlocking mechanism according to the invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a surface-mounted lock provided with a locking / unlocking mechanism according to the present invention as viewed from the indoor side, and FIG. 2 is a front view of the entire glass door to which the surface-mounted lock shown in FIG. FIG. 3 and FIG. 3 are perspective views of the face-coated lock shown in FIG. 1 viewed from the outdoor side.
The locking / unlocking mechanism of the face-locking according to the present embodiment can be suitably used for an open / close body, for example, a double-sided full-face glass door. In addition, the locking / unlocking mechanism can be suitably used for a single-open full-surface glass door, a double-open / single-open steel door, and the like. In the present embodiment, an example will be described in which the surface lock 100 shown in FIG. 1 having the locking and unlocking mechanism is provided on the double-sided full-face glass door 11 (11a, 11b).

  As shown in FIG. 2, glass panels 13 and 13 are provided on the left and right sides of the building opening, and the glass panels 13 and 13 are attached and fixed to an opening sash or the like. The pair of full-surface glass doors 11a and 11b described above are supported by hinges 15 and 15 so as to be openable and closable at the entrance opening between the glass panels 13 and 13, and the full-surface glass doors 11a and 11b are unidirectional (this embodiment). It is possible to restrict the opening to the indoor side in the form.

  As for the full-surface glass doors 11a and 11b, for example, one full-surface glass door 11a is restricted from opening and closing, and only the other full-surface glass door 11b can be opened and closed. In this case, the opening / closing restriction of one full-face glass door 11a can be performed by an opening / closing restriction means provided on the hinge 15 or the like. In this state, if the other full glass door 11b is locked to one full glass door 11a, both of the pair of full glass doors 11a and 11b are in a locked state in which opening and closing is restricted. The surface-coated lock 100 according to the present embodiment functions to lock the other full glass door 11b to the one full glass door 11a.

  A locked body 17 is attached to one of the entire glass doors 11a, and the locked body 17 can lock a tip of a bolt (latch), which will be described later, protruding from the surface lock 100. That is, in the state in which one full-surface glass door 11a is fixed, the other full-scale glass door 11b is configured such that the bolt (latch) is locked to the locked body 17 so that it is indoor side ) Is restricted.

  The face lock 100 includes a lock case 21, lever handles 23A and 23B as opening / closing operation members, a latch 25 as a bolt, a locking / unlocking operation member (thumturn) 27 provided in parallel with the lever handles 23A and 23B, A locking / unlocking operation member (cylinder lock) 29 and a trigger 31 are provided outside. The lock case 21 includes an outdoor case 21a and an indoor case 21b. The outdoor side case 21a and the indoor side case 21b are attached with the door open / close end 32 of the entire glass door 11b being sandwiched. From each of the outdoor case 21a and the indoor case 21b, shaft portions 35 of lever handles 23A and 23B having handle portions 33 formed at the tips protrude in a direction perpendicular to the door surface 37.

  The surface lock 100 is configured such that the front end of the latch 25 that advances and retreats from the lock case 21 fixed to the entire glass door 11 b protrudes from the door opening / closing end 32 and is locked to the locked body 17 to lock the entire glass door 11 b. Locked (open door restricted state). The lever handles 23A and 23B are rotatable in a direction perpendicular to the door surface 37 with the shaft portion 35 penetrating the entire glass door 11b and the lock case 21. Since the lever handle 23A, 23B is used as the opening / closing operation member, the surface lock 100 has an operation force from the center of rotation (center of the shaft portion 35) as compared with the case where the opening / closing operation member is, for example, a ball grip handle. A large distance to the application point is ensured, and a small rotational operating force can be easily and reliably input to the lock mechanism.

4 is a front view showing the internal configuration of the face-locking device shown in FIG. 1 in the closed door unlocked state, FIG. 5 is a front view showing the internal structure of the surface-locking device shown in FIG. 1 in the closed door locking state, and FIG. It is a disassembled perspective view.
A shaft portion 35 is inserted into the indoor case 21 b through the opening 53, and a cam boss 55 is externally inserted into the inserted shaft portion 35. The cam boss 55 includes an inner cylinder 57 that restricts relative rotation with the shaft portion 35 and an outer cylinder 59 that is fixed to the outer periphery of the inner cylinder 57 and restricts relative rotation with the cam plate 41. A through hole 61 of the inner cylinder 57 is extrapolated to the outer periphery of the shaft portion 35, and a through hole 43 of the cam plate 41 is extrapolated to the outer periphery of the outer cylinder 59. The cam plate 41 constitutes an interlocking mechanism 40 by an amplification swing arm 77 and a connecting arm 83 which will be described later. The cam plate 41 is formed by bending a pair of plate members made of sheet metal in parallel. The cam plate 41 is provided with a torsion spring (not shown), and the torsion spring urges the cam plate 41 clockwise in FIG. A rotation restricting protrusion 45 and a stopper 47 are formed on the outer periphery of the cam plate 41 with a recess therebetween, and the rotation restricting protrusion 45 and the stopper 47 rotate the cam plate 41 forward and backward so that the inner wall of the indoor side case 21b. Each of the upright pins 51 provided at 49 is in contact with the upright pins 51 to prevent the cam plate 41 from rotating outside a predetermined rotation angle range. Further, a muffler collar 63 shown in FIG. 4 is extrapolated to the upright pin 51, and the muffler collar 63 can reduce the contact sound with the cam plate 41.

  The latch 25, which is long in the lateral direction, is accommodated in the upper part of the indoor case 21b so as to be reciprocally movable in the longitudinal direction. The latch 25 can protrude from the door opening / closing end 32 of the entire glass door 11b. That is, the latch 25 moves forward from the indoor case 21b and protrudes from the door opening / closing end 32, and moves backward to retract into the indoor case 21b. The latch 25 is locked to a locking portion (for example, strike) 65 of the locked body 17 in a state of protruding from the door opening / closing end 32. Thereby, the opening of the entire glass door 11b is restricted. The latch 25 is provided with a compression spring (not shown), and the compression spring urges the latch 25 in the protruding direction.

  A protrusion restricting pin 67 is erected on the inner wall 49 of the indoor side case 21b, and the protrusion restricting pin 67 restricts the forward movement of the latch 25 by a predetermined amount or more. A silencing collar 69 is extrapolated to the protrusion restricting pin 67, and the silencing collar 69 can reduce the contact sound between the latch 25 and the protrusion restricting pin 67. An opening hole 73 through which the thumb turn shaft 71 passes is formed in the inner wall 49 of the indoor case 21b.

  A swing shaft 75 is erected on the inner wall 49 of the indoor case 21 b, and a support hole 79 of an amplification swing arm 77 constituting the interlocking mechanism unit 40 is externally inserted into the swing shaft 75. The base end of the amplification swing arm 77 is rotatably supported by the swing shaft 75, and the distal end 77a presses the latch 25 in the backward direction in the case.

  In the surface lock 100, the tip 77a of the amplification swing arm 77 presses the rear end 81 shown in FIG. The rear end portion 81 is formed by bending a rear end developing wall portion of the latch 25 formed of a sheet metal material and engaging the projection 81a with a hole portion of the side plate. Thus, in the surface-coated lock 100, the tip 77a of the amplification swing arm 77 presses the rear end portion 81, so that the amplification swing arm 77 is a cam compared to the case where the tip 77a presses the central portion of the latch 25. It becomes possible to dispose the board 41 close to it. As a result, the amplification swing arm 77 is arranged close to the cam plate in the accommodating space in the indoor case 21b formed in parallel with the latch 25, and the constituent members can be accommodated at a high density. Realization of compact design.

  Further, in the surface lock 100, the swing shaft 75 is disposed between the cam plate 41 and the door opening / closing end 32. As a result, the amplification swing arm 77 can be disposed in parallel with the accommodation space of the latch 25 that reciprocates between the cam plate 41 and the door opening / closing end 32. The latch housing space is effectively used. That is, as compared with the case where the amplification swing arm 77 is disposed on the opposite side across the cam plate 41, it is possible to arrange the constituent members in the indoor case 21b at a high density. As a result, the lock case 21 can be made more compact than the arrangement in which the amplification swing arm 77 is provided on the opposite side with the cam plate 41 interposed therebetween.

  The base end of the connecting arm 83 is pivotally fixed to the cam plate 41, and the distal end of the connecting arm 83 is pivotally fixed to the amplification swing arm 77. A connection hole 85 is formed at the base end of the connection arm 83, and a connection hole 87 is formed at the distal end of the connection arm 83. On the other hand, a connection hole 89 is formed in the vicinity of the outer periphery of the cam plate 41, and a connection hole 91 is formed in the amplification swing arm 77. The base end of the connecting arm 83 and the cam plate 41 are connected by a connecting pin 93 fitted into the connecting hole 85 and the connecting hole 89. The distal end of the connection arm 83 and the amplification swing arm 77 are connected by a connection pin 87 fitted into the connection hole 87 and the connection hole 91.

  In the surface-coated lock 100, the rotational force from the cam plate 41 is transmitted to the latch 25 via the connection arm 83 and the amplification swing arm 77, thereby fixing the fixed portion (that is, the cam plate 41 and the connection arm 83). The rotation distance of the connecting pin 93) is configured to be smaller than the distance of the latch 25 in the backward direction in the case. That is, a quick return mechanism for the latch 25 is configured.

  In this quick return mechanism, the base end of the connecting arm 83 is fixed to the outside of the rotation radius of the cam plate 41, and the tip of the connecting arm 83 is fixed to the turning radius of the amplification swing arm 77 (that is, the length of the amplification swing arm 77 itself). (B) is fixed to the amplification swing arm 77 between the substantially central portion and the swing shaft 75.

  In this quick return mechanism, the base end of the connecting arm 83 is fixed outside the rotational radius of the cam plate 41, so that a large rotational input distance can be extracted from the rotation of the lever handles 23A and 23B, and this rotational input distance is amplified. By inputting to the swing shaft 75 side of the swing arm 77, the rotation input distance is amplified and converted into the latch backward operation distance of the amplification swing arm 77. As a result, the latch 25 can be operated backward with a small rotation angle of the lever handles 23A and 23B. While a normal lever handle requires an opening / closing operation angle of about 45 °, in the configuration according to the present embodiment, the latch 25 is sufficiently retracted by inputting an opening / closing operation angle θ of about 23 ° (see FIG. 9). Is possible.

FIG. 7 is an exploded perspective view of the erroneous operation preventing mechanism, and FIG. 8 is an exploded perspective view of the vicinity of the trigger.
In the indoor case 21b, a click cam 151, which is a cylindrical member with a fitting hole 151a fixed so as to be mounted on the thumb turn shaft 71 that is the shaft body of the thumb turn 27 so as not to be relatively rotatable, is provided. Is rotated together with the thumb-turn 27 locking / unlocking rotation operation. The thumb turn shaft 71 may be connected to a rotating body of the cylinder lock 29, and the click cam 151 may be rotated together by a locking / unlocking operation by the cylinder lock 29. A lock cam groove 153 is formed on the outer periphery of the click cam 151, and the lock cam groove 153 has a lock cam 165 described later disposed therein. The click cam 151 and the thumb turn 27 serving as the locking / unlocking operation member are arranged at positions close to the latch 25 as shown in FIG. The position is set so as not to interfere with the amplification oscillating arm 77, and the wasteful space in the lock case 21 is reduced as much as possible.

  Further, a trigger abutment protrusion 155 is provided on the outer periphery of the click cam 151, and the trigger abutment protrusion 155 abuts on a stopper protrusion 171a of the trigger 31 described later, thereby restricting the rotation of the click cam 151. Therefore, if the click cam 151 is restricted from rotating, the locking / unlocking rotation operation by the thumb turn 27 and the cylinder lock 29 cannot be performed.

  A protruding piece is provided on the outer periphery of the click cam 151, and a pin hole 157 is formed in the protruding piece so as to be parallel to the rotation center axis of the click cam 151. The pin hole 157 is connected to the hole 159a opened at the base end of the click bar 159 via the pin 157a. The tip of the click bar receiver 161 is extrapolated to the tip of the click bar 159, and the base end of the click bar receiver 161 is fixed to the inner wall 49. A click spring 163 is extrapolated between the base end of the click bar 159 and the click bar receiver 161, and the click spring 163 applies a rotational moment in the forward and reverse directions to the click cam 151 via the click bar 159. ing. As a result, the click cam 151 is rotated and arranged moderately by generating a click feeling at the unlocked position shown in FIG. 4 and the locked position shown in FIG.

  A lock cam 165 is provided on the inner wall 49 in the vicinity of the click cam 151, and the lock cam 165 is freely slidable in the vertical direction by engaging the long holes 165a and 165a with the support pins 169 and 169 standing on the fixing hole 167 of the inner wall 49. It has become. A restriction piece 165b is bent at the upper end of the lock cam 165, and the restriction piece 165b is pushed by the rotation of the click cam 151 in the locking direction to push up the lock cam 165. Further, the lock cam 165 is provided with a locking piece 165 c so as to be locked to one end of the lock cam groove 153 of the click cam 151. When the lock cam 165 is pushed up with the rotation of the click cam 151, the restricting piece 165 b comes into contact with the notch portion 26 of the latch 25 to prevent the latch 25 from moving backward. In other words, the latch 25 works as a dead bolt that is a locking rod. The lock cam 165 is always urged downward by an urging member such as a spring (not shown). When the rotation of the click cam 151 is in the unlocking direction, the urging force returns to the initial position.

  As shown in FIG. 8, a trigger plate 171 and a trigger spring guide 173 are integrally laminated and fixed to the trigger 31 by caulking connection holes 174a and 174b. 178 is slidably fixed. A holding groove 175 a is formed in the trigger guide 175, and the holding groove 175 a allows the insertion piece 173 a of the trigger spring guide 173 to enter. A trigger spring 179 is externally inserted into the insertion piece 173a between the trigger guide 175 and the trigger spring guide 173, and the trigger spring 179 biases the trigger 31 in the protruding direction. A stopper projection 171a is raised and bent at the rear portion of the trigger plate 171. As shown in FIG. 10, the stopper projection 171a abuts against the trigger abutment projection 155 in a state where the trigger 31 protrudes, and the click cam 151 rotates. The movement is regulated. That is, when the door is opened, the thumb turn 27 and the cylinder lock 29 cannot be locked.

  The indoor case 21b is provided with a lock block 181 that is long in the advancing and retracting direction of the latch 25, and the lock block 181 has pin holes 181a and 181b at both ends in the longitudinal direction. Engagement pins 183 a and 183 b are inserted into the pin holes 181 a and 181 b, and the insertion tips of the engagement pins 183 a and 183 b are engaged with the elongated holes 185 of the inner wall 49. The lock block 181 is slidable along the bottom plate portion 178 in parallel with the advancing / retreating direction of the latch 25 by moving the engaging pins 183a, 183b in the longitudinal direction of the long hole 185.

  A long hole 187 a formed at one end of the lock arm 187 is engaged with the engagement pin 183 b, and the lock arm 187 is connected to the protrusion 189 of the click cam 151 at the other end hole 187 b. The lock block 181 is arranged at the left end of the indoor case 21b as shown in FIG. 4 when unlocked. On the other hand, as shown in FIG. 5, when the click cam 151 is rotated counterclockwise for locking, the lock block 181 is slid to the right via the lock arm 187, and the rear end portion is the cam plate 41. The contact part 191 is contacted. The cam plate 41 is prevented from rotating when the lock block 181 contacts the contact portion 191. That is, the lock block 181 is arranged at a position where the rotation of the cam plate 41 is restricted by the rotation of the click cam 151 to the locking position.

Next, the operation of the above locking / unlocking mechanism will be described.
FIG. 9 is an operation explanatory diagram at the time of opening / closing operation member rotation (opening operation) in the door closing, and FIG. 10 is an operation explanatory diagram showing a locked state of the locking / unlocking mechanism in the door opening.
In the closed lock 100 shown in FIG. 4, the latch 25 is protruded from the door opening / closing end 32 and locked to the locking portion 65 of the locked body 17, so that the full glass door 11 b is fixed. Is in a door opening restricted state. The trigger 31 is in a state of being retracted into the indoor case 21b.

  When the lever handles 23A, 23B are rotated counterclockwise in FIG. 4 for opening the full-surface glass door 11b, the cam plate 41 of the interlocking mechanism 40 is rotated in the same direction, and the connecting arm is connected to the cam plate 41. The amplification swing arm 77 connected through 83 is also rotated in the same direction. By rotating the amplification swing arm 77 counterclockwise, the tip 77a of the amplification swing arm 77 presses the rear end portion 81 of the latch 25 to the left in FIG. 9, and the latch 25 is inside the indoor case 21b. Will be drawn into.

  Thereby, the front-end | tip 25a of the latch 25 remove | deviates from the latching | locking part 65, and the door opening restriction state of the whole surface glass door 11b is cancelled | released. When the entire glass door 11b is opened and the opening operation force to the lever handles 23A and 23B disappears, the cam plate 41 is rotated clockwise by the torsion spring in FIG. The rotation of the plate 41 stops. The latch 25 is also moved to the right in FIG. 10 by the compression coil spring and abuts against the protrusion restricting pin 67 to restrict the protrusion more than a predetermined amount. In this state, the trigger 31 is also protruded.

  In the surface lock 100, the rotation angle θ of the lever handles 23A and 23B for retracting the latch 25, that is, the rotation angle θ of the cam plate 41 is reduced, and the rotation exclusive space for operating the cam plate is suppressed to be small. Yes. In addition to this, the latch 25 can be retracted into the indoor case 21b with a small rotational operation angle of the lever handles 23A, 23B. Thereby, especially when the door to which the surface-mounted lock 100 is attached is the full-surface glass door 11b, the lock case 21 is formed small and does not stand out.

  When the thumb turn 27 or the like, which is a locking / unlocking operation member, is operated in the closed state and the click cam 151 is in the locked position as shown in FIG. Slides perpendicular to the moving direction of the latch 25 and is moved to a position where the latch 25 is prevented from moving backward. As a result, the latch 25 works as a dead bolt. That is, the locking / unlocking mechanism is configured with a small number of members that do not require a dead bolt.

  Further, when the click cam 151 is rotated to the locking position by operating the thumbturn 27 or the like, the lock block 181 moves to a position for restricting the rotation of the cam plate 41 as shown in FIG. The rotation of the plate 41, that is, the rotation of the lever handles 23A and 23B is restricted. Thereby, in the locked state, the lever handles 23A and 23B are made non-rotatable so that it can be easily understood that the locked state is obtained.

  Further, when the door is opened, the trigger 31 is projected as shown in FIG. 10, and the protrusion of the trigger 31 restricts the rotation of the click cam 151 by the stopper projection 171 a. Therefore, when the door is opened, the locking / unlocking operation member connected to the click cam 151, that is, the thumb turn 27 and the cylinder lock 29 cannot be operated, and the latch 25 acting as a dead bolt protrudes in an unnecessary locked state when the door is opened. Are now regulated. That is, the backward movement of the latch 25 cannot be restricted when the door is opened. Therefore, if the entire glass door 11b is closed, the latch 25 is always retracted into the indoor case 21b.

  Therefore, according to the locking / unlocking mechanism of the surface lock 100 according to the present embodiment, the front end 25a of the latch 25 that advances and retreats from the lock case 21 fixed to the door surface 37 is protruded from the door opening / closing end 32 to be locked. In the locking / unlocking mechanism of the surface lock 100 that locks the door by restricting to the door 17, the click cam 151 that is rotated in the lock case 21 following the thumb turn 27 and the like, and the lock of the click cam 151. And a lock cam 165 disposed at a position to prevent the latch 25 from retreating in accordance with the rotation of the direction. When the thumb cam 27 is operated and the click cam 151 is in the locked position in the closed state, this click Following the rotation of the cam 151, the lock cam 165 is moved to a position that prevents the latch 25 from retracting. As a result, the latch 25 works as a dead bolt, and can be locked and unlocked with a small number of components. As a result, the surface lock 100 can be made compact, and the design of the entire door can be improved.

  In addition, since the lock cam 181 is disposed at a position for restricting the rotation of the cam plate 41 by following the rotation of the click cam 151 to the locking position, the click cam 27 is operated, so that the click cam 151 is operated. Is rotated to the locking position, the lock block 181 moves to a position where the rotation of the cam plate 41 is restricted, and the rotation of the cam plate 41, that is, the rotation of the lever handles 23A and 23B is restricted. This makes it impossible to rotate the lever handles 23A and 23B in the locked state, so that it can be easily informed that it is in the locked state, and an unnecessary opening operation is performed despite being locked. It is possible to prevent an unnecessary erroneous operation load from being applied to the surface lock 100. As a result, the durability of the face-coated lock 100 can be improved.

  Furthermore, a trigger 31 that is slidably provided in the indoor side case 21b and is urged in a protruding direction from the door opening / closing end 32, and a click 31 that protrudes from the trigger 31 and projects the trigger 31 rotates the click cam 151. Since the stopper protrusion 171a arranged at the position to be controlled is provided, the trigger 31 protrudes when the door is opened, and the stopper protrusion 171a restricts the rotation of the click cam 151 by the protrusion of the trigger 31. Therefore, when the door is opened, the operation of the thumb turn 27 or the like connected to the click cam 151 becomes impossible, and it is possible to prevent the latch 25 serving as a dead bolt from protruding in an unnecessary locked state when the door is opened. As a result, it is possible to prevent damage to the face lock 100 and the door due to the latch 25 protruding in the locked state and closing the door, and the safety can be improved.

  In the above embodiment, since the opening / closing operation members are the lever handles 23A and 23B, it is possible to easily and surely input a small rotational operation force to the lock mechanism and improve the operability as compared with the ball grip handle or the like. Can be made.

  In the above embodiment, the case where the opening / closing operation member is the lever handle 23A, 23B has been described as an example. However, in the latch mechanism of the surface lock according to the present invention, the opening / closing operation member is a ball-shaped handle, so-called Of course, a knob may be used, or an irregular shaped operation member may be used. In any case, the rotation angle during operation can be reduced, and the operation member can be installed in a narrow range. In addition, the operator's operation range including the lever handles 23A and 23B described above can be reduced, and even a person who cannot take a large opening / closing operation can perform the opening / closing operation. .

  Further, in the above embodiment, the case where the face-locking 100 is provided on the double-sided full-face glass door 11 has been described as an example. However, the face-locking is a single-opening full-face glass door, double-opening / single-opening steel. Of course, it may be used for doors or wooden doors, and since it has a small structure as a locking device, it can also be used for small doors and has a great influence on the design of the doors of various materials. Without giving, it is possible to configure a good locking device.

It is the perspective view seen from the room inner side of the surface locking provided with the locking / unlocking mechanism concerning the present invention. It is the front view which looked at the full surface glass door to which the lock with a surface shown in FIG. 1 was attached from the outdoor side. It is the perspective view which looked at the lock with face shown in FIG. 1 from the outdoor side. It is a front view showing the internal structure in the closed door unlocking state of the surface locking shown in FIG. It is a front view showing the internal structure in the closed door locking state of the face-locking shown in FIG. It is a disassembled perspective view of a quick return mechanism. It is a disassembled perspective view of a misoperation prevention mechanism. It is a disassembled perspective view of the trigger vicinity. It is operation | movement explanatory drawing at the time of opening-and-closing operation member rotation (opening operation) in a closed door. It is operation | movement explanatory drawing showing the locked state of the locking / unlocking mechanism in an open door.

Explanation of symbols

11 ... door (full glass door)
17 ... Locked object 21 ... Lock case 23 ... Opening / closing operation member (lever handle)
25 ... Bolt (latch)
25a ... tip 27 ... locking / unlocking operation member (thumb)
29 ... Locking / unlocking operation member (cylinder lock)
DESCRIPTION OF SYMBOLS 31 ... Trigger 32 ... Door opening / closing end 35 ... Shaft part 37 ... Door surface 40 ... Interlocking mechanism part 100 ... Locking surface 151 ... Click cam 165 ... Lock cam 171a ... Stopper protrusion 181 ... Lock block

Claims (3)

A locking mechanism for locking and unlocking a door that restricts opening of the door by projecting the tip of a bolt that advances and retreats from a lock case fixed to the door surface from the door opening and closing end and locking it to the locked body,
An opening / closing operation member that is pivotable with a shaft portion passing through the door and the lock case in a direction perpendicular to the door surface;
Coupled to the shaft portion of the opening and closing operation member, interlocked to the bolt, and an interlocking mechanism portion that slides the bolt in a backward direction in the case;
An unlocking / unlocking operation member disposed in proximity to the interlock mechanism and disposed in proximity to the bolt;
A click cam which is comprised of a cylindrical member arranged on the shaft of the locking / unlocking operation member, and is rotated in the lock case by being driven by the locking / unlocking operation member;
A lock cam that engages with the outer peripheral surface of the click cam, follows the rotation of the click cam in the locking direction, is slidable perpendicularly to the forward / backward direction of the bolt, and prevents the bolt in the protruding state from retreating When,
A locking and unlocking mechanism for a face-locking device. A lock block that follows the rotation of the click cam to the locking position and engages with the interlock mechanism, and restricts the rotation of the shaft portion of the opening / closing operation member;
The surface-locking locking / unlocking mechanism according to claim 1, comprising: A trigger that is slidable forward and backward in the same direction as the bolt in the lock case, and is biased in a protruding direction from the door opening and closing end;
A stopper projection that is projected from the trigger and is locked to the click cam by protruding the trigger, and restricts the rotation of the click cam;
The surface-locking locking / unlocking mechanism according to claim 1 or 2, further comprising:

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