JP2015206249A - Latch lock for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a retracted state, by retracting a hook plate in a case body by operation force of a handle when opening a door.SOLUTION: A latch lock X for a building is provided in an opening-closing body 2 of an opening part 1 of a building, and comprises a locking piece 5 for engaging with a receiving tool Y arranged in a jamb 3 when closing a door, and the latch lock comprises a rotary cam 8 for rotating by a predetermined quantity by operation force of handles 6 and 7, an advance-retreat member 10 for engaging with an engaging arm 8b of the rotary cam and sliding in an orthogonal state to a face seat 4a of a case body 4, energization means 9 for always energizing the advance-retreat member in the direction for projecting from the face seat, a hook plate as an engaging piece connected so as to interlock with the advance-retreat member via engaging means 24 and having the latch function of journaling its base end part to the face seat vicinity and attitude maintaining means 11 having a locking body for engaging with an engaging tooth 25a provided on the advance-retreat member so as to maintain an attitude of the advance-retreat member retreating against energization force of the energization means by operation force of the handles when opening the door.

Description

  The present invention relates to a building latch lock, and in particular, a building is a factory, a hospital, a facility, etc., and a door relates to a building latch lock intended for a fire door disposed in an opening of a factory, a hospital, a facility, etc. .

  Patent Document 1 states that “a hook plate 2 that restrains the engagement fitting 4 provided on the fire door 20, and a link on which an elastic force is applied to hold the engagement fitting 4 in a state of being restrained by the hook plate 2. In the fire door automatic closing device R including the latch lever 30 provided with the members 31, 32, the link members 31, 32 are wound around a spring material around the link shafts 31a, 31b, 32a to “Matters for imparting elastic force in the direction opposite to the moving direction” are described.

  In a normal use mode, the fire door 20 is provided in a rotary manner at an opening which is an entrance of a building such as a factory, a hospital, or various facilities so that the fire door 20 can be restrained to the wall side in an “open state”. On the other hand, a fire door automatic closing device (for buildings) provided with a hook plate 2 for temporary locking that engages and disengages with a sideways U-shaped engagement metal fitting 4 fixed to a substantially central portion of one side wall of the fire door 20. The latch lock is fitted into a recess formed in the wall near the opening.

  Therefore, the building latch described in Patent Document 1 has a hook-type hook plate 2 for temporary locking, in which an engagement fitting 4 as a receiving member that engages with the hook plate 2 for temporary locking protrudes from a mounting location. For the reason that it does not appear and disappear from the notch opening 101 of the case body 100, the receiving device 4 is disposed in the vertical frame forming the opening, while the building latch lock is attached to the opening / closing body (rotary door, sliding door). There is a problem that even if it is provided at the tip, it cannot be used at all (the reference is that of Patent Document 1).

  Therefore, at present, fire doors that can be provided in the vertical frame of the opening of buildings such as factories, hospitals, various facilities, etc., can be temporarily locked in a state in which the opening is closed in a normal use mode, Latch lock for buildings that can retract the hook plate into the case body with the operating force of the operation handle when the door is opened, and maintain the retracted state when the hook plate is retracted into the case body (especially when the door is opened) Is expected to appear.

  By the way, Patent Document 2 states that “a rotation lock piece 11 (hook plate) pivotally attached to a lock box body so as to be able to appear and disappear from a face seat 7 attached to the lock box body 1, and this rotation. There is a projecting pin (operating pin) 12 that is pivotally supported by the lock box body so that the lock piece can be rotated, and that engages with a guide long hole 13 formed in the pivotally attached portion of the rotation lock piece. A driven gear, a gear train 16 that meshes with the driven gear, a clutch means 18 that meshes with the gear train, and meshes with the clutch means, and rotates the rotation lock piece via the gear train and the driven gear. A drive motor 20 provided in the lock box main body so that the rotary lock piece can be rotated via the driven gear, and a driven gear provided in the lock box main body. With a drive gear meshing with It describes a matter "and a unlocking means 30.

  However, the invention described in Patent Document 2 is a “sliding door electric lock”, and when the door is opened, the rotary lock piece 11 (hook plate) is interlocked with an advancing / retracting member that slides by the operating force of the operating handle. It does not leave the vertical frame holder. On the other hand, when the door is closed, the rotation lock piece 11 does not automatically engage with the vertical frame receiver in conjunction with the advance / retreat member. Moreover, the trigger means 4 and 40 which cancel | release the latching state of the said rotation lock piece 11 at the time of a door closing do not utilize the polarity of a magnetic body (a code | symbol is the thing of patent document 2).

JP 2005-320824 A JP-A-7-26809

  The main object of the present invention is to provide a latch for building having a hook plate that engages with a receiving member disposed in a vertical frame of the opening at the tip of the opening / closing body, and in a normal use mode, the opening is closed. Can be temporarily locked with the handle, but when the door is opened, the hook plate can be retracted into the case body with the operating force of the handle. When the hook plate is retracted into the case body (particularly when the door is opened) It is providing the latch lock for buildings which can maintain. Preferably, the building latch lock is provided at the front end portion of the fire door disposed in the opening of a factory, hospital, facility or the like. The second purpose is that the hook plate having a temporary locking function is separated from the vertical frame receiving member in conjunction with the advancing / retracting member that moves backward by the operating force of the handle. A third object is to automatically engage the hook of the vertical frame in conjunction with the advance / retreat member when the door is closed. The fourth purpose is to be able to use a plurality of modes of use such as left and right, one-sided, double-sided, and sliding doors.

  The building latch lock according to the present invention is a building latch lock provided on an opening / closing body of an opening of a building and having an engagement piece that engages with a receiving member disposed in a vertical frame of the opening when the door is closed. The latch lock is a rotation cam that rotates by a predetermined amount by the operating force of the handle, and an advance / retreat member that engages with an engagement arm of the rotation cam and slides in a state orthogonal to the face seat of the case body. And an urging means for constantly urging the advancing / retracting member in a direction protruding from the face seat, and an advancing / retreating member connected to each other via an engaging means, the base end portion of which is connected to the face seat The hook plate as the engagement piece having a latch function that is pivotally supported in the vicinity, and the posture of the advance / retreat member that retreats against the urging force of the urging means by the operation force of the handle when the door is opened. The figure which has the latching body engaged with the engagement tooth provided in this advance / retreat member so that it may maintain Characterized in that it comprises a maintaining means.

  Here, the “latch function” is a temporary lock. Therefore, the dead bolt used as the present locking is not an essential matter of the present invention, but the case main body is formed in a vertically long shape, and the dead bolt is provided with a required interval either above or below the advance / retreat member. It may be arranged.

(A) The invention according to claim 1 is provided with a building latch lock having a hook plate that engages with a receiving member disposed in a vertical frame of the opening at the tip of the opening / closing body. Can be temporarily locked with the part closed, but when the door is opened, the hook plate can be retracted into the case body with the operating force of the handle. When the hook plate is retracted into the case body (especially when the door is opened) In addition, the retracted state can be maintained.
(B) In the invention according to claim 2, the posture maintaining means is disposed on at least one of the locking body pivotally supported on the case body via the fixed shaft, and either the fixed shaft or the case body, and A holding spring that urges the claw of the first engaging piece of the locking body to engage with at least one engaging tooth provided on the advance / retreat member; An effect can be obtained.
(C) In the invention according to claim 3, the posture maintaining means includes a second engagement piece that is pivotally supported by the case body and engages with a trigger means having a movable magnet, and when the door is closed, the trigger means is When the position is displaced corresponding to the polarity of the fixed magnet disposed on the vertical frame holder, the locking body pushed by the trigger means rotates in a direction to release the locking state of the advance / retreat member, thereby Since the advance / retreat member automatically moves forward by the urging means by the urging force, and the hook portion of the hook plate that rotates in conjunction with the advance / retreat member engages the receiving device in the temporarily locked state, similarly. The effect (a) can be obtained with a simple configuration.
(D) In the invention according to claim 4, since the tip part of the advance / retreat member and the hook part of the hook plate are formed symmetrically, the invention can be used without permission.
(E) In the invention according to claim 5, since the hook portion of the hook plate is engaged with the receiver like a sickle piece, fire does not erupt and the hook plate cannot be easily detached from the receiver. Therefore, it is suitable for fire doors installed at openings in factories, hospitals, and facilities.

1 to 13 are explanatory views showing a first embodiment of the present invention.
The environmental explanatory drawing which applied this invention to the opening part of a factory. Schematic explanatory drawing from a plan view. Explanatory drawing which shows each member arrange | positioned at a case body (at the time of a door closing, temporary locking state). Explanatory drawing which shows the internal structure of the case body from planar view. FIG. 4 is a left side view based on FIG. 3. Explanatory drawing of a principal part (hook plate, advance / retreat member, biasing means). Explanatory drawing from the front-end | tip part side which shows that a hook plate also uses right and left hand. The elements on larger scale of the principal part. The perspective view (attitude maintenance means) of the principal part. Explanatory drawing of the principal part (ratchet piece including an engagement tooth). Explanatory drawing of the main part (trigger means). Explanatory drawing of the state where the handle was pushed down in the closed state and the hook plate was pulled into the case body. Explanatory drawing of a door open state (state which removed the hand from the handle). Explanatory drawing (front view) of the receiver used in connection with this invention.

  FIG. 1 thru | or FIG. 13 is the latch lock for buildings of one Embodiment of this invention. FIG. 14 is an explanatory view from the front view of a receiver used in connection with the present invention. Embodiments of the present invention will be described below with reference to the accompanying drawings.

(1) Environmental Member First, FIG. 1 is an environmental explanatory diagram in which the present invention is applied to an opening / closing body 2 provided in an opening 1 of a building (for example, a factory). The building is, for example, a large-scale IT-related factory, school, Hospitals, facilities, etc. The opening 1 is an entrance for partitioning a building space so that, for example, a fire does not spread in the event of a fire, and the opening / closing body 2 is pivotally supported, for example, at its base end, and its distal end is the opening. 1 is a fire door facing the vertical frame 3 forming 1. Therefore, the latch lock X is made of a refractory metal. The engaging piece has a structure that can withstand a fire.

  That is, the latch lock X is housed in the distal end portion of the opening / closing body 2, and when the door is closed, the hook plate 5 (hereinafter referred to as “engagement piece”) that automatically engages with the receiver Y disposed in the vertical frame 3. "Cama latch"). The kama latch 5 is a latch of an ordinary general latch lock that is used on a daily basis (the protruding tip is a vertical locking contact surface that is inclined, and a vertical lock that is connected to the vertical sliding contact surface in an acute angle direction. It has been developed mainly for use in fire doors of large-scale IT-related factories, and its base end is pivotally supported by a case body 4 corresponding to a lock box. The tip portion extending like a hook from the base end portion 5a is a hook portion 5b.

  In the embodiment, the kama latch 5 is devised so that it can be used in a plurality of modes such as left and right, one-sided opening, two-sided opening, and sliding doors. Preferably, the hook portion 5b is formed symmetrically like a kama piece. .

  As shown in FIG. 2, one handle 6 or the other handle 7 is provided on the inner and outer wall surfaces of the opening / closing body 2. When one of the handles 6, 7 is operated (for example, pressed), the operation of the handle is performed. The force is transmitted to the rotating cam 8, and the rotational moment of the rotating cam 8 is transmitted to the advancing / retracting member 10. The advancing / retracting member 10 moves backward in the case body 4 against the urging force of the urging means 9. To do. At this time, the kama latch 5 connected to the advancing / retracting member 10 via the engaging means 24 described later is in a direction to cancel the temporarily locked state in conjunction with the advancing / retreating member 10, that is, the hook portion 5b of the kama latch 5 is Rotate in a direction away from the support Y of the vertical frame 3. When the kama latch 5 retracts to the case body 4 together with the advance / retreat member 10, the advance / retreat member 10 does not return due to the urging force of the urging means 9 even if the opening / closing body 2 is opened and the hand is released. Further, the case body 4 is provided with the posture maintaining means 11 for the advancing / retreating member.

  Further, preferably, the trigger means 12 is added so that the kama latch 5 automatically engages with the support Y of the vertical frame 3 in conjunction with the advance / retreat member 10 when the door is closed. Therefore, the building latch lock X of the present invention includes the following main components.

(2) Main components: see FIGS. 3 and 12 FIG. 3 is an explanatory view showing each member arranged in the case body 4, and FIG. 3 shows the biasing force of the biasing means (pressing spring) 9 when the door is closed. When the advance / retreat member 10 automatically moves forward and protrudes from the face seat 4a of the case body 4, the kama latch 5 rotates clockwise substantially simultaneously. As a result, the hook portion 5b is engaged with the support Y of the vertical frame 3. The combined temporary locking state is shown. On the other hand, FIG. 12 shows a state in which one of the handles 6 and 7 is pushed down and the kama latch 5 is retracted into the case body 4 in conjunction with the backward movement of the forward / backward moving member 10 by the operating force. FIG. 13 shows the posture maintaining means 11 in the open state even when the trigger means 12 that press-contacts the posture maintaining means 11 is hung by its own weight and is separated from the posture maintaining means 11. The state where the advance / retreat member 10 is locked by the spring force of the holding spring 33 so that the kama latch 5 does not jump out of the case body 4 is shown. FIG. 13 shows that the posture maintaining means 11 holds the advance / retreat member 10 by the spring force of the holding spring 33 even when the hand is released from the handle. Therefore, the balance between the urging force of the urging means (pushing spring) 9 for the advance / retreat member 10 and the urging force of the holding spring 33 is set appropriately.

  Therefore, main components will be described. First, reference numeral 4 denotes a box-shaped case body, and the case body 4 is housed in an embedded state at the distal end portion of the fire door 2. Since the latch lock X is desirably used for the fire door 2, the case body 4 is made of a metal material resistant to fire. Since the case body 4 corresponds to a lock box, the case body 4 includes an unnumbered case body, a case lid, a front plate, a face seat (front) 4a provided on the front surface of the front plate, and the like. Although a detailed description of the case body 4 is omitted, the face seat 4a and the front plate are formed with an opening 4b for the cam latch 5 and the advance / retreat member 10. The case body 4 is appropriately formed with a shaft hole, a mounting hole, and the like.

  Next, 8 is a rotating cam that rotates by a predetermined amount by the operating force of either one or the other handle (6, 7). This rotating cam 8 is a rectangular or non-true shaft into which the angular axis of the handle enters. A cylindrical cam body 8a having a circular shaft hole, and an engagement arm 8b fixed or integrally formed in a substantially vertical state on a mounting portion projecting from one end of the cam body 8a in the radial direction. And have. A handle spring 20 is wound around the outer peripheral surface of the cam body 8 a to return the grip portion of the L-shaped handle (6, 7) in the horizontal direction, and one end thereof is an unsupported spring end support provided in the case body 4. The other end of the cam body 8a is supported by an unsupported spring end support portion. Although description of the detailed matter of the cam main body 8a is omitted, the cam main body 8a has a stopper portion protruding in the other radial direction, and can be rotated by a predetermined amount.

  Next, 9 is an urging means for the advancing / retracting member 10, and the spring end tip of the urging means 9 is appropriately connected to the rear end 10a of the advancing / retracting member 10, while the spring end rear end is the case. The body 4 is supported in a press-contact state at a portion near the center of the rear wall 4c.

  Next, reference numeral 10 denotes an advancing / retracting member that engages with the engaging arm 8 b of the rotating cam 8 and slides in a state orthogonal to the face seat 4 a of the case body 4. As described above, the advancing / retracting member 10 is always urged by the urging means 9 in the direction in which the front end portion 10b continuous from the rear end portion 10a in a long plate shape protrudes from the face seat 4a of the case body 4. Yes. Therefore, the advancing / retreating member 10 can move back to a predetermined position against the urging force of the urging means 9.

  With reference to FIG. 7, the distal end portion 10 b of the advancing / retreating member 10 has a left-right symmetrical shape formed in a U-shape. Of course, depending on the orientation of the hook portion 5b of the kama latch 5, the tip portion 10b may have an inverted U-shape. The structure of the advancing / retracting member 10 is similar to a so-called dead bolt, but the advancing / retreating member 10 of the embodiment is not used for the present locking, and the kama latch 5 is fixed to the base end 5a. This is a drive member for rotating around the base 21. Therefore, the design of the form of the advance / retreat member 10 can be changed to any form different from a so-called dead bolt. In the embodiment, an elongate locking plate portion 10c extending in parallel above the rear end portion 10a of the advancing / retreating member 10 is provided, and the end plate is formed by bending the rear end portion of the locking plate portion 10c. The upper end portion of the engaging arm 8b of the rotating cam 8 described above is engaged with the inside of the portion. Further, the advancing / retracting member 10 has a guide long hole 10d in the horizontal direction, and a guide pin 23 fixed to the wide side wall of the case body 4 enters the guide long hole 10d. The guide means for the advance / retreat member 10 is appropriately designed so that the advance / retreat member 10 can move horizontally in a stable state.

  Next, 4 is connected to the advancing / retracting member 10 so as to be interlocked via the engaging means 24, and the base end portion 5a is pivotally supported via the fixed shaft 21 in the vicinity of the inner wall surface of the face seat 4a described above. It is a kama latch 5 (special shape as a latch) as an engagement piece having a latch function. The engaging means 24 includes an operating pin 24a horizontally provided on the upper side portion of the distal end portion 10b of the advancing / retracting member 10, and a guide formed in an arc shape at a substantially central portion of the kama latch 5 so as to engage with the operating pin. It consists of a long hole 24b.

  Next, the posture maintaining means 11 is applied to the case body so as to maintain the posture of the advancing / retreating member 10 that has moved backward against the urging force of the urging means 9 by the operating force of the handle (6, 7) when the door is opened. It is arranged. The appearance configuration of the posture maintaining means 11 is as shown in FIG. Further, the ratchet piece 25 (including the mounting plate 27) having the engaging teeth 25a to be engaged with and disengaged from the posture maintaining means 11 is as shown in FIG. In the embodiment, a ratchet mechanism is used, and the engaging claws 32a of the locking pieces 31 constituting the posture maintaining means 11 are engaged one by one with the engaging teeth 25a (ratchet teeth) against the elastic force of the holding spring 33. , And the retracted state of the kama latch 5 is maintained by the engagement teeth at the end. In addition, although the ratchet mechanism is used as the attitude | position maintenance means 11, this is an example and a latching means is a matter which can be designed suitably.

  Thus, the posture maintaining means 11 includes at least a ratchet piece 25 having engagement teeth 25a fixed directly or indirectly to one side of the advance / retreat member 10 or integrally formed on one side of the advance / retreat member 10. A locking body 31 pivotally supported on the case body 4 via a fixed shaft 26 provided in the vicinity thereof, a first engagement piece 32 provided on the locking body, and the first engagement A holding spring 33 disposed on either the fixed shaft 21 or the case body 4 is provided so that the one claw 32a is engaged with the engaging tooth 25a provided on the advance / retreat member 10.

  The posture maintaining means 11 includes a second engagement piece 34 that is pivotally supported by the case body 4 and has a movable magnet 41 at the lower end thereof and engages with the trigger means 12 that is pivotally supported by an unfixed fixed shaft. And when the door is closed, when the position of the trigger means 12 is displaced in accordance with the polarity of the fixed magnet 42 provided in the case-shaped receptacle Y, the trigger means 12 is pressed against (pressed in the embodiment) or Depending on one of the engagement states, the locking body 31 rotatably supported by the fixed shaft 26 rotates in a direction to release the locking state of the advancing / retracting member 10 and the locking state is released. Then, the advancing / retracting member 10 is moved forward by the urging means 9 by the urging force, and the hook portion 5b of the kama latch 5 is engaged with the case-shaped receiving member Y in a temporarily locked state.

  Here, referring to the partially enlarged view of the main part of FIG. 8, the locking body 31 and the holding spring 33 constituting the posture maintaining means 11 will be described. The holding spring 33 is a torsion spring, and its central portion is a ratchet. It is wound around the fixed shaft 26 located below the piece 25, one spring arm 33a is pressed against and supported by a spring end support piece 35 provided on the second engagement piece side of the locking body 31, and the other spring arm 33b is The case body stoper 38 for the contact piece 36 of the locking body 31 is pressed and supported.

  Therefore, the locking body 31 whose cylindrical shaft portion 37 is pivotally supported by the fixed shaft 26 has the engagement claw 32a from above the engagement teeth 25a (ratchet teeth) of the ratchet piece 25 by the spring force of the holding spring 33. ) Is always urged in a direction (clockwise in the drawing).

  FIG. 10 shows a ratchet piece 25 having engagement teeth 25a integrally fixed to one side (lower side in the embodiment) of the advance / retreat member 10 via a mounting plate 27 and a fixture 28. The mounting plate 27 is used to prevent the ratchet piece 25 from being “rattling” and is not an essential matter of the invention. Therefore, although the detailed code | symbol is abbreviate | omitted, this attachment plate 27 is devised, for example, bend | folds one end part of the horizontally long rectangular-shaped part 27a which has several screw holes, bend | folds the other edge part. A horizontally elongated ratchet piece 25 having a plurality of fixing tool holes is fixed to the lower surface of the horizontally elongated rectangular portion 27 a of the mounting plate 27 via a fixture 28.

  As described above, the engagement teeth 25a of the embodiment are ratchet teeth formed in the horizontal direction at one end edge of the ratchet piece 25, and the ratchet teeth are formed on the front side of the flat plate-like ratchet piece 25. Yes.

  Finally, FIG. 14 is an explanatory view from the front view of the receiver Y used in connection with the present invention. Although the description of the specific configuration of the receiver Y is omitted, the vertically long receiver Y has a magnet 42 fixedly provided at the lower end thereof, and the fixed magnet 42 is a movable magnet 41 of the trigger means 12 when the door is closed. Opposite. When the magnets 41 and 42 face each other, they repel each other in the embodiment, and the trigger means 12 rotates counterclockwise as shown in FIG. The result is as described above, and the locking body 31 pushed on the back side of the movable magnet 41 rotates counterclockwise in the same direction as the trigger means 12 against the spring force of the holding spring 33. Reference numeral 43 is a receiving opening for the cam latch.

  The present invention is used, for example, as a building latch for a fire door disposed in an opening of a factory, hospital, facility or the like.

X ... Latch lock, Y ... Receiver,
1 ... opening, 2 ... opening and closing body (for example, fire door),
3 ... Vertical frame,
4 ... Case body, 4a ... Face seat,
5 ... Hook plate (Kama latch),
6, 7 ... handle,
8 ... rotating cam, 8b ... engaging arm,
9 ... biasing means,
10 ... Advancing / retracting member,
11: posture maintaining means,
12 ... trigger means,
24 ... engaging means,
25 ... ratchet piece, 25a ... engaging tooth,
26: fixed shaft,
31 ... stopper,
32 ... 1st engagement piece,
33 ... Holding spring,
34 ... 2nd engagement piece.

Claims (5)

A building latch lock provided on an opening / closing body of an opening of a building and having an engagement piece that engages with a receiving member disposed on a vertical frame of the opening when the door is closed. A rotating cam that rotates by a predetermined amount by an operating force, an advancing / retracting member that engages with an engaging arm of the rotating cam and slides in a state perpendicular to the face seat of the case body, and the advancing / retracting member A latching function in which a biasing means that constantly biases in a direction protruding from the seat and an advance / retreat member that is interlocked with each other via an engagement means, and a base end portion of which is pivotally supported in the vicinity of the face seat; A hook plate serving as the engagement piece, and an advancing / retreating member that maintains the posture of the advancing / retreating member that has moved backward against the urging force of the urging means by the operation force of the handle when the door is opened. Building building provided with posture maintaining means having a locking body that engages with the provided engagement teeth Ji tablets. The posture maintaining means according to claim 1, wherein the posture maintaining means is disposed on at least one of the locking body pivotally supported by the case body via a fixed shaft, the fixed shaft or the case body, and A building latch lock comprising: a holding spring that biases the claw of the first engagement piece to engage with at least one engagement tooth provided on the advance / retreat member. 3. The posture maintaining means according to claim 2, further comprising a second engaging piece that is pivotally supported by the case body and engages with a trigger means having a movable magnet, and when the door is closed, the trigger means is a vertical frame holder. When the position of the stationary magnet is displaced according to the polarity of the fixed magnet, the locking body pushed by the trigger means rotates in a direction to release the locking state of the advancing / retracting member, whereby the advancing / retracting member is The building latch lock characterized in that the hook portion of the hook plate that automatically moves forward by the biasing force of the biasing means and rotates in conjunction with the forward / backward moving member engages the receiving member in a temporarily locked state. . 2. The building latch according to claim 1, wherein the forward and backward movement member and the hook portion of the hook plate are formed symmetrically. The building latch according to claim 1, wherein the door is a fire door disposed in an opening of a factory, hospital, facility or the like.

Images