JP2013019228A - Door keylock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door keylock capable of reliably preventing diffusion of flames and smoke by preventing a camber of a door from being caused by heat when the fire breaks out.SOLUTION: Latch locks 2...2 are attached to at least two or more upper-end and lower-end locations on the opening end side of a door D having one end turnably and pivotally supported by a hinge and the like. When the door closes, the door is locked by latch locks 2...2. when the door opens, the door can be opened by simultaneously opening the latch locks 2...2 by an operation of one handle 4 or 5 which is provided on an indoor or outdoor side.

Description

  The present invention attaches latch locks to at least two places on the open end side of the door, that is, the upper end portion and the lower end portion, or the central portion, the upper end portion, and the lower end portion, and attaches at least two or three latch locks. The door can be unlocked and opened simultaneously by operating the indoor or outdoor handle, and when the door is closed, the door is locked by the above-mentioned at least two or three latch locks. Also relates to a door lock that prevents warpage of the door due to heat and prevents the spread of flame and smoke.

  As shown in, for example, Japanese Utility Model Laid-Open No. 60-90367 (hereinafter referred to as Patent Document 1), a conventional door lock is provided at a substantially central portion in the vertical direction of the door. It was a thing.

Japanese Utility Model Publication No. 60-90367

However, when the door lock of Patent Document 1 is closed, the latch of the latch lock is always locked by engaging with the receiving hole of the frame on the other side. One place. For this reason, if a fire breaks out in the building, the inside surface of the door expands due to heat and the door warps, but the center part of the door is locked and fixed with a latch lock. However, since the upper end and the lower end are not locked, as shown in FIG. 14, the door provided with one latch lock 02 at the substantially central portion in the vertical direction of the door D is greatly displaced to the outdoor side. As a result, there was a problem that flames and smoke diffused from the gap between the upper end and the lower end of the door and the damage expanded.
In FIG. 14, 03 is a latch, 04 is an outdoor handle, and 05 is an indoor handle.

In addition, there is a conventional three-point locking lock that locks three locations on the door, but this is designed to lock three locations with dead bolts for the purpose of crime prevention. When the door is closed, it is not always automatically locked. And in order to lock this, operation of a key or thumb turn is required, and a latch lock is attached to one place in the center.
Therefore, when a fire broke out in a state where the three locks were not locked, it was not possible to prevent the door from warping in the same manner as described above.

  The present invention intends to solve the above-described problems of the conventional door lock, and at least two locations on the open end side of the door, ie, an upper end portion and a lower end portion, or a central portion, an upper end portion, and a lower end portion. Is locked with a latch lock, and at least two or three places are locked with a latch lock when the door is closed. It aims at providing the door lock which can prevent spreading of smoke.

  In order to achieve the above object, the door lock according to claim 1 of the present invention is latched at least at two positions of the upper end and the lower end of the open end of the door pivotally supported at one end by a hinge or the like. A lock is attached, and when the door is closed, it is locked by the latch lock. When the door is opened, the door can be opened by simultaneously unlocking the latch lock by operating one handle on the indoor side or the outdoor side. Characterized by

  The door lock according to claim 2 is the door lock according to claim 1, wherein the handle for operating the latch lock is a push-pull handle, and the upper end of the push-pull handle is provided at the upper end of the door. The lower end of the latch is pivotally supported by a latch lock seat provided at the lower end of the door, and the push-pull handle is pushed or pulled in the door opening direction. The latch lock can be unlocked and opened at the same time.

  A door lock according to a third aspect of the present invention is the door lock according to the first aspect, wherein the handle for operating the latch lock is a lever handle, and the lever handle is provided at a substantially central portion in the vertical direction of the door. A pair of interlocking members that move up and down in conjunction with the rotation are provided, the interlocking members are connected to the latch lock, and the latch lock can be unlocked and opened by rotating the lever handle. It is characterized by being.

  A door lock according to a fourth aspect of the present invention is the handle according to the second or third aspect, wherein a latch lock is attached to each of the three positions of the substantially central portion, the upper end portion, and the lower end portion on the open end side of the door, and the latch lock is operated. Is a push-pull type handle or lever handle.

  According to the door lock of the first aspect, the latch locks are attached to at least two of the upper end portion and the lower end portion on the open end side of the door pivotally supported at one end by a hinge or the like. Since it is locked by a latch lock, and when opening the door, it is characterized in that the latch lock can be unlocked and opened simultaneously by operating one handle on the indoor side or the outdoor side. Since it is securely locked by at least two latches at the upper end and the lower end, a strong locking state can be obtained and the latches can be unlocked and opened simultaneously by operating one handle. You can door. In addition, when a fire occurs, the door can be prevented from warping by locking at least two latch locks, so that the spread of flame and smoke can be prevented.

  According to the door lock of the second aspect, in addition to the effect of the door lock of the first aspect, the handle for operating the latch lock is a push-pull type handle, and the push-pull type handle is opened in the door opening direction. Since the latch lock can be unlocked and opened as it is by simply pushing or pulling on, it is extremely excellent in operability. Further, the push-pull type handle is arranged from the latch lock at the upper end portion of the door to the latch lock position at the lower end portion, so that it can be operated anywhere in the high or low portion of the handle, which is convenient.

  According to the door lock of the third aspect, in addition to the effect of the door lock of the first aspect, since the handle for operating the latch lock is a lever handle, the existing lever handle can be used as it is, so that it is extremely inexpensive. Can be provided.

  According to the handle lock of the fourth aspect, in addition to the effect of the door lock of the second or third aspect, the door is provided with latch locks at three positions of a substantially central portion on the open end side, an upper end portion and a lower end portion. When the door is closed, the latch lock locks the approximate center, top and bottom ends of the door, so that if a fire occurs, the warp of the door due to heat can be prevented more reliably. The spread of flame and smoke can be prevented more reliably.

It is the front view which looked at the door lock of Example 1 of the present invention from the outdoor side. It is the left view which looked at the door lock of FIG. 1 from the left side. It is the front view which looked at the door lock of FIG. 1 from the room inner side. It is the top view which looked at the door lock of FIG. 1 from the plane. It is principal part sectional drawing of FIG. It is a front view which shows the case inside of the latch lock of FIG. It is the front view which looked at the door lock of Example 2 of this invention from the outdoor side. It is a front view which shows the state which operated the lever handle of the door lock of FIG. It is an enlarged view of the lever handle part of the door lock of FIG. It is an enlarged view of the latch lock of the upper end part of FIG. It is the front view which looked at the door lock of Example 3 of this invention from the outdoor side. It is the front view which looked at the door lock of Example 4 of this invention from the outdoor side. It is an enlarged view of the latch lock of the center part of the door lock of FIG. It is the figure which looked at the conventional door lock from the open end side of the door.

    The door lock of the present invention is provided with latch locks attached to at least two positions on the open end side of the door, at least at the upper end portion and the lower end portion. When the door is closed, the door lock is locked by the latch lock. The latch lock can be unlocked and opened at the same time by operating one handle provided on the door. For details, refer to Examples 1 to 4 described below.

A first embodiment of the door lock of the present invention will be described below with reference to FIGS.
The door lock 1 includes a latch lock 2 attached to an upper end and a lower end of an open end of a door D pivotally supported by a hinge H and the like, and unlocks the latch locks 2 and 2. An outdoor handle 4 and an indoor handle 5 to be operated are provided in the main part.

  The handles 4 and 5 are push-pull type handles, and the upper end and the lower end thereof are respectively turned to the outdoor seat 6 and the indoor seat 7 attached to the portions corresponding to the latch lock 2. It is pivotally supported.

  The structure of the handles 4 and 5 is a conventionally known structure, and the outline thereof will be described. As shown in FIGS. 4 and 5, the end portions 42 and 52 of the arm portions 41 and 51 integrated with the handles 4 and 5 are provided. The shafts 43 and 53 are pivotally supported by bearings 44 and 54 fixed to the seats 6 and 7, respectively.

8 and 9 shown in FIGS. 4 to 6 are levers made of an L-shaped plate, and the base end of the lever is a bearing 44 fixed to the outdoor seat 6 or the indoor seat 7; 54 is pivotally supported by pivots 81 and 91. The leading ends of the levers 8 and 9 protrude from the seats 6 and 7 and are inserted into the lock case 2a of the latch lock 2. In addition, operating pins 45 and 55 fixed to the handles 4 and 5 are engaged with holes formed adjacent to the pivots 81 and 91.
Then, when the outdoor handle 4 is pulled in the door opening direction, the handle 4 is rotated clockwise around the shaft 43, and the engaging portion of the lever 8 is pushed by the operating pin 45, and the lever 8 is also rotated clockwise. To turn. (The two-dot chain line state in FIG. 5)

  Further, when the indoor handle 5 is pushed in the door opening direction, the handle 5 is rotated clockwise around the shaft 53, and the engaging portion of the lever 9 is pushed by the operating pin 55, and the lever 9 is also rotated clockwise. To turn. (The two-dot chain line state in FIG. 5)

  In addition, the latch lock 2 attached to the upper end part and lower end part of a door uses the conventionally well-known inversion-type latch 3 as FIG. 6 shows.

Next, the operation of the door lock of the first embodiment will be described below.
1 to 6, the latch 3 of the latch lock 2 protrudes from the lock case 2 a by the urging force of the spring 34 and is engaged with the receiving hole 21 of the receiving seat 20 provided in the frame J and locked. Yes. In this locked state, even if wind pressure or the like acts on the door D in the door opening direction, the linear back surface portion 32 of the latch 3 is pressed against the edge of the receiving hole 21, and the latch is clockwise in FIG. Although it tries to rotate (reverse), since the locking portions 10a and 11a of the locking members 10 and 11 are engaged with the locking grooves 33 and 33 at the rear end of the latch 3, the inversion of the latch 3 is prevented. . Therefore, in the locked state of the latch lock 2, even if a force in the opening direction acts on the door, the door D is kept closed.

   As will be described later, when the engagement between the locking members 10 and 11 and the latch 3 is released (unlocked) by operating the handle, the latch 3 is moved to the two points in FIG. Inverted to the state indicated by the chain line, the back surface portion 32 is converted into the inclined surface portion 31, so that the inclined surface portion 31 is pushed against the edge of the receiving hole 21 by the force in the door opening direction, and the latch 3 is locked. It retracts into the case 2a and is opened.

  By the way, since the latch lock 2 is attached to at least two locations on the open end side of the door D, that is, at least two locations on the upper end portion and the lower end portion, the door is locked at at least two locations when the door is closed. Therefore, in the event of a fire in the building, even if the door expands due to heat and warps in the direction in which the upper and lower ends of the door move outward, the latch locks on the upper and lower ends Locking can reliably prevent warpage and prevent the spread of flame and smoke.

  The tips of the levers 8 and 9 provided on the outdoor handle 4 and the indoor handle 5 are inserted into the lock case 2a of the latch lock 2 as shown in FIG. 8 is in contact with the bent piece 12c of the right operating member 12, and the lever 9 of the handle 5 on the indoor side is in contact with the bent piece 10c of the locking member 10 located on the left side.

  The locking members 10 and 11 of the latch lock 2 are provided in a pair of upper and lower portions, and the locking portions 10a and 11a are engaged with locking grooves 33 and 33 provided on the upper and lower sides of the rear end portion of the latch 3, respectively. .

  By the way, the upper locking member 10 is an L-shaped plate-like body, the central part is pivotally supported by the lock case 2 a by a shaft 10 b, and the locking part 10 a provided at the distal end is the upper part of the latch 3. The engaging groove 33 is engaged. In addition, a bent piece 10c is formed at the rear end, and is in contact with the lever 9 on the indoor side. Reference numeral 15 denotes a kick spring hung on the shaft 10b. One end of the kick spring is brought into contact with the lock case 2a and the other end is brought into contact with the bent piece 10c of the lock member 10 to urge the lock member 10 in the counterclockwise rotation direction. doing.

  The lower locking member 11 is a substantially inverted T-shaped plate-like body, the central part of which is pivotally supported by the lock case 2a by a shaft 11b, and the locking part 11a at the distal end is engaged with the lower part of the latch 3. It engages with the stop groove 33. In addition, an elongated hole 11c in the left-right direction is formed at the rear end portion of the locking member 11, and the shaft 14 fixed to one end of the operating member 12 is inserted to connect the locking member 11 and the operating member 12. Has been.

   In addition, an elongated hole 11d in the vertical direction is formed at the base of the locking member 11, and a shaft 13 fixed to the upper locking member 10 is inserted, so that the upper locking member 10 and the lower locking member 11 are connected. It is connected.

  The actuating member 12 is provided at the rear end of the lock case 2a, is a substantially L-shaped plate, and its central portion pivotally supports the lock case 2a with a shaft 12b. Yes, a bent piece 12c provided at one end is in contact with the lever 8 on the outdoor side. Further, a kick spring 16 is hung on the shaft 12b, one end abuts on the bent piece 12c and the other end abuts on the lock case 2a, and urges the operating member 12 in the counterclockwise rotation direction. .

  Next, when the outdoor handle 4 is operated and pulled in the door opening direction, the lever 8 of the outdoor handle 4 rotates clockwise as shown by the two-dot chain line in FIG. The lever 8 moves to the right side. Then, the lever 8 pushes the bent piece 12c of the operating member 12 abutting against the lever 8 in the right direction and rotates the operating member 12 in the clockwise direction, so that the lower locking member 11 is counteracted by the shaft 14 of the connecting portion. By rotating clockwise, the locking portion 11a and the latching groove 33 of the latch 3 are disengaged.

  When the lower locking member 11 is rotated counterclockwise, the upper locking member 10 is also rotated clockwise by the connecting portion shaft 13, and the locking portion 10 a and the locking groove 33 of the latch 3 are rotated. Is disengaged. That is, since the engagement between the locking members 10 and 11 and the latch 3 is released via the lever 8 by the operation of the handle 4 on the outdoor side, the latch lock is unlocked.

  When the indoor handle 5 is operated and pushed in the door opening direction, the lever 9 of the indoor handle 5 rotates counterclockwise as shown by the two-dot chain line in FIG. Will move to the left. Then, the lever 9 pushes the bent piece 10c of the locking member 10 that contacts the lever 9 and rotates the locking member 10 in the clockwise direction, so that the locking portion 10a of the locking member 10 and the locking groove 33 of the latch 3 Is disengaged, the lower locking member 11 is also rotated counterclockwise by the shaft 13 of the connecting portion, the engagement between the locking portion 11a and the locking groove 33 of the latch 3 is released, and the latch lock is unlocked. The

  As described above, by operating the handle 4 on the outdoor side or the handle 5 on the indoor side, the upper and lower locking members 10 and 11 are simultaneously rotated via the lever 8 or 9, and the engagement between the locking portions 10a and 11a and the latch 3 is simultaneously performed. Since the engagement with the retaining grooves 33 and 33 is released, the latch 3 can be reversed, and the latch lock is unlocked. The door can be opened by continuously pulling or pushing the handle 4 or the handle 5 in the door opening direction.

A second embodiment of the present invention will be described below with reference to FIGS.
In the second embodiment, the handle for unlocking the latch locks 106 and 106a attached to the upper end and the lower end of the door D is used as a lever handle. It is attached to the center. The lever handle 100 is conventionally known and is rotatably held by the round seat 101. A rectangular operation shaft 100a fixed to the lever handle 100 is provided on a case 105 attached to the door D. It is inserted through a square hole of a hub (not shown).

  The case 105 is used as a spring device of the lever handle 100, and has a known latch lock form disclosed in, for example, Japanese Patent Application Laid-Open No. 60-90367. However, it does not have a latch for locking, and has only a hub biased by a spring in the direction opposite to the rotation direction of the lever handle, which serves as a spring device for the lever handle 100.

An operation shaft 100a of the lever handle 100 is inserted into a square hole 102a formed in the center by a disk-shaped operation plate provided between the case 105 and the door. Rotated.
In addition, holes 102b and 102c are formed in the upper and lower symmetrical positions in the operation plate 102, and interlocking members 103 and 104 are connected. By the clockwise rotation of the operation plate 102 by the clockwise rotation operation of the lever handle 100, The upper interlocking member 103 is pulled downward, and the lower interlocking member 104 is pulled upward. That is, the interlocking members 104 and 103 move up and down as the lever handle 100 rotates.

  FIG. 10 shows a latch lock 106 at the upper end of the door lock 1A according to the second embodiment. A latch 108 is urged in a protruding direction by a spring 108b in a rectangular lock case 109 that is long in the vertical direction, and can be moved in and out. Is fitted. The latch 108 is the same reversible latch as in the first embodiment, and the locking portion 107a of the locking member 107 is inserted into the locking grooves 108a on the upper and lower locking grooves 108a and 108a at the rear end of the latch 108. Engage and prevent latch inversion. That is, the latch lock is locked.

  The locking member 107 is fixed at a rear end portion of the lock case 109 to a plate-like slider 110 provided to be slidable in the vertical direction, and moves up and down integrally with the slider 110. The bent piece 110a provided on the slider 110 is hung on the other end of the tension spring 111 that is hung on the bent piece 109a provided on the lock case 109. The slider 110 is always upward. It is energized. Further movement of the slider 110 and the locking member 107 in the upward direction is prevented by the contact portion between the locking portion 107 a of the locking member 107 and the locking groove 108 a of the latch 3.

  The upper end portion of the interlocking member 103 is fixedly attached to the locking member 107 with a bolt 112. When the lever handle 100 at the center of the door is rotated clockwise, the operation plate 102 is also rotated clockwise. Since the interlocking member 103 moves downward, the locking member 107 slides downward against the urging force of the spring 111, and the engagement between the locking groove 108a of the latch 108 and the locking portion 107a of the locking member 107. The latch 108 is disconnected and the inversion of the latch 108 is allowed. That is, in the same manner as the latch lock 2 in the first embodiment, the latch 108 is allowed to be reversed, the latch lock 106 is unlocked, and the door can be opened.

  By the way, the latch lock 106a at the lower end is the same as the latch lock 106 at the upper end, and it may be attached with its direction turned upside down. In this case, however, the slope part and the back part of the latch 108 are reversed, so that the direction of the latch 108 is reversed to match the direction of the latch 108 of the upper latch lock 106 in accordance with the door opening / closing direction. It is necessary to reassemble the lock case 109 in the direction. By doing so, the interlocking member 104 moves upward in the latch lock 106a at the lower end, so that the locking member 107 slides upward, the engagement between the locking member 107 and the latch is released, and the latch lock 106a is unlocked.

As described above, in the door lock 1A according to the second embodiment, the door D is locked by the two latch locks 106 and 106a attached to the upper end and the lower end thereof. In this case, it is possible to prevent the warpage of the door due to heat.
In addition, in order to unlock and open the latch lock, the upper and lower latch locks 106 and 106a are unlocked via the interlocking members 103 and 104 by the turning operation of the lever handle 100 attached to the substantially central portion of the door. Can be opened as it is. Therefore, in the case of the second embodiment, an existing lever handle can be used as a handle for unlocking the latch lock, and it is not necessary to provide a large handle as in the first embodiment, and the door lock 1A can be made inexpensive. Can be provided.

A third embodiment of the present invention will be described with reference to FIG.
In the door lock 1B of the third embodiment, latch locks 2 are attached to three locations of a substantially central portion, an upper end portion, and a lower end portion of the door D, and the latch locks 2 are unlocked by one push-pull type handle. It is characterized in that it can be operated. The latch lock 2 is the same as the latch lock 2 of the first embodiment, and is different from the first embodiment in that the latch lock 2 is attached to the substantially central portion of the door. The latch locks are also connected to the handles 4 and 5 so that the three latch locks 2 can be unlocked simultaneously by operating the handles 4 and 5.

  FIG. 11 is a front view of the door D of the door lock 1B according to the third embodiment as viewed from the outdoor side, and a seat on the indoor side (in the inside and outside of the door corresponding to the latch lock 2 attached to the substantially central portion of the door) (Not shown) and an outdoor seat 6 are fixedly attached to each other, and an indoor handle (not shown) and an outdoor handle 4 are pivotally supported on the respective seats via arms 41 thereof. . Each seat is provided with a lever (not shown) that interlocks with the turning operation of the handle, and the leading end of each lever is inserted into the lock case of the latch lock 2, for example, an indoor handle (see FIG. (Not shown) can be opened in the door opening direction or the outdoor handle can be pulled in the door opening direction to simultaneously unlock and open the three latch locks.

  Note that the configuration of the latch lock 2 and the handle and the unlocking mechanism of the latch lock 2 by operating the handle are all the same as those in the first embodiment, and the description thereof is omitted.

  As described above, according to the door lock 1B of the third embodiment of the present invention, in the closed state, the door D is locked by the three latch locks 2 at the substantially central portion, the upper end portion, and the lower end portion. As compared with 1, the door can be locked more firmly. Therefore, in addition to the effects of the first embodiment, even when a fire occurs, it is possible to more reliably prevent the door from warping.

A fourth embodiment of the present invention will be described with reference to FIGS.
The door lock 1C of the fourth embodiment is different from the second embodiment in that a latch lock 106b is attached to a substantially central portion of the door, and the door is locked with three latch locks when the door is closed.

  That is, the latch lock 106 at the upper end portion of the door and the latch lock 106a at the lower end portion are unlocked via the interlocking members 103 and 104 by the turning operation of the lever handle 100 at the substantially central portion. The latch lock 106b in the substantially central portion is a so-called lever handle lock latch, and is similar to the case 105 of the second embodiment in that it includes a spring-biased hub (not shown). The case 105 is different in having a latch 120.

  The structure of the latch lock 106b is a known latch lock as mentioned in the section [0036] in the description of the second embodiment. In the second embodiment, a hub (not shown) that acts only as a spring device of the lever handle 100 is used. In the fourth embodiment, the latch 120 is connected, and the lever 120 is moved back through the hub by the rotation of the lever handle 100 to be unlocked.

As described above, according to the door lock 1C of the fourth embodiment of the present invention, in the closed state, the door D is locked by three latch locks of the substantially central portion, the upper end portion, and the lower end portion. A stronger locking state can be obtained as compared with 1 and 2. Therefore, even when a fire occurs, the warpage of the door can be prevented more reliably.
In addition, in order to unlock the three latch locks and open the door, an existing lever handle can be used as the lever handle attached to the substantially central portion of the door, and the door lock 1C can be provided at low cost. .

1, 1A, 1B, 1C Door lock 2, 106, 106a, 106b Latch lock
3, 108, 120 Latch 2a, 109 Lock case 4 Outdoor handle 5 Indoor handle 6 Outdoor seat 7 Indoor seat 8, levers 10, 11, 107 Locking member 20 Receiving seat 100 Lever handle 102 Operation Plate 103, 104 Interlocking member 105 Case

Claims (4)

  Attach a latch lock to at least two places on the open end side of the door that is pivotally supported by a hinge or the like at one end, and when the door is closed, it is locked by the latch lock and opens the door. A door lock characterized in that the latch lock can be unlocked and opened at the same time by operating one handle provided on the indoor side or the outdoor side.   The handle for operating the latch lock is a push-pull handle, the upper end of the push-pull handle is pivotally supported by a latch lock seat provided at the upper end of the door, and the lower end is It is pivotally supported by a latch lock seat provided at the lower end of the door, and by pushing or pulling the push-pull handle in the door opening direction, the latch lock can be simultaneously unlocked and opened. The door lock according to claim 1, wherein the door lock is provided.   The handle for operating the latch lock is a lever handle, and the lever handle is provided at a substantially central portion in the vertical direction of the door and includes a pair of interlocking members that move up and down in conjunction with the rotation of the lever handle. 2. The door according to claim 1, wherein the interlocking member is connected to the latch lock, and the latch lock can be unlocked and opened by rotation of the lever handle. Tablets.   A latch lock is attached to each of the three locations of the substantially center portion, the upper end portion, and the lower end portion on the open end side of the door, and the handle for operating the latch lock is the push-pull type handle or the lever handle. The door lock according to claim 2 or claim 3.

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