WO2017154704A1 - Latch locking device and door comprising same - Google Patents

Abstract

A latch locking device 10 provided with, in a lock case 11, 21 incorporated into a door 2, a latch member 30 that is freely displaceable in the width direction of the door and one end 31 of which appears and disappears in the width direction of the door, and a lock mechanism 40 that prevents the latch member placed in a protruding state from moving in the retracting direction while in a locked state, wherein: the lock mechanism has a configuration in which the locked state is caused by a lock piece 45 that is displaceable in the vertical direction and is moved toward the bottom being disposed between the other end 32 in the width direction of the door of the latch member in the protruding state and a back-side inner wall 18, 28 facing the door-front side of the lock case opposite to the other end; and the lock case has a configuration in which a first case 11 and a second case 21 that are made of resin, that are held so that the lock mechanism is sandwiched between both ends in the door thickness direction, and that are divided in the door thickness direction, are joined by engaging with each other, and the lock case comprises a drop prevention barrier 29 that inhibits movement of the lock mechanism in the downward direction when the first case and the second case are deformed so that the holding of the lock mechanism is released.

Description

Latch locking device and door device provided with the same

The present invention relates to a latch locking device incorporated in a door and a door device provided with the same.

Conventionally, a latch case (latch bolt) that is displaced in the door width direction by a handle operation or the like so that a latch head at one end protrudes and retracts is provided in a lock case that is embedded in the door end side end of the door body. Latch locking devices are known. A conventional lock case of a general latch lock device is composed of a metal housing and a lid member divided in the door thickness direction, and is integrally joined with fastening elements such as screws in a state where various parts are assembled inside. There is a problem that the number of parts increases.
For example, in Patent Document 1 below, the latch bolt and the movement of the latch bolt are restricted in the lock case assembled by engaging the engaging portions of the first lock case and the second lock case made of resin. A lock incorporating a locking member that can be switched to a locked posture is disclosed. In this lock, the locking insertion member of the locking member moved downward is positioned between the latch bolt and the rear side wall portion of the first lock case and the second lock case, and is latched by this locking insertion member. The retraction of the bolt is prevented, and the locked state is obtained. In addition, this lock is provided with a protruding portion protruding inward on the rear side standing wall portion of the first lock case and the second lock case, and these protruding portions are provided at the rear end portion of the locking insertion member at the time of locking. The locking engagement pieces are provided at an interval so that they can be inserted in a state in which they overlap.

JP 2014-105516 A

In the lock described in Patent Document 1, the engagement portions of the first lock case and the second lock case are engaged with each other, and the protrusions are engaged with the locking engagement pieces of the locking insertion member. Therefore, it is possible to suppress disassembly of the first lock case and the second lock case in the door thickness direction. However, for example, if an excessive (abnormal) handle operation is performed in the direction in which the latch bolt is retracted at the time of locking, the locking insertion member is pressed against the rear side wall of the lock case by the latch bolt, and the lock case is damaged. Or deformation may occur. As a result, it is conceivable that the locking member, which is held on both sides of the door thickness direction in the lock case, is displaced, and malfunctions such as difficulty in locking and unlocking occur, and further improvement is desired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a latch lock device capable of suppressing malfunction while reducing the number of parts and a door device equipped with the latch lock device.

In order to achieve the above object, a latch locking device according to the present invention includes a latch member that is displaceable in the door width direction and has one end portion in the door width direction protruding and retracted in a lock case incorporated in the door body, and a locked state. A locking mechanism for preventing movement of the latch member in the protruding state in the immersion direction, wherein the locking mechanism is in the door width direction of the latch member in the protruding state. Between the other end portion of the lock case and the inner wall on the back side facing the door end of the lock case facing the other end portion, a lock piece portion which is displaceable in the vertical direction and moved downward is disposed. The lock case is configured to be locked, and the first case and the second case made of resin divided in the door thickness direction that hold the lock mechanism so as to be sandwiched from both sides of the door thickness direction are engaged with each other. And combined composition And the fall prevention wall which suppresses the movement to the downward side of this lock mechanism when these 1st cases and 2nd cases deform | transform so that holding | maintenance of the said lock mechanism may be provided is provided. And

Further, in order to achieve the above object, a latch locking device according to the present invention includes a latch member that is displaceable in the door width direction and has one end portion in the door width direction protruding and retracted to a lock case incorporated in the door body. And a locking mechanism for preventing movement of the latch member in the protruding state in the retracted direction in the locked state, wherein the locking mechanism is a door of the latch member in the protruding state. Between the other end portion in the width direction and the inner wall on the back side facing the door end of the lock case facing the other end portion, a lock piece portion that is displaceable in the vertical direction and moved downward is disposed. The lock case is configured such that the first case and the second case made of resin divided in the door thickness direction for holding the lock mechanism so as to sandwich the lock mechanism from both sides of the door thickness direction are mutually connected. Engaged and combined configuration In addition, each of the first case and the second case has a configuration in which protrusions projecting toward the door end side are provided on the inner wall on the back side where the other ends of the latch members face each other, and the lock The one part is provided with a receiving recess for receiving the protrusions in the locked state so as to suppress the movement of the protrusions of the first case and the second case in the door thickness direction. The depth dimension along the door width direction of the receiving recess of the one part is made larger than the projecting dimension along the door width direction of the protrusion of the first case and the second case. .

In order to achieve the above object, a door device according to the present invention includes a latch lock device according to the present invention, and a door body in which a housing recess into which the latch lock device is incorporated is provided at an end of the door tip side. It is characterized by providing.

The latch lock device according to the present invention and the door device provided with the latch lock device are configured as described above, so that malfunctions can be suppressed while saving parts.

1 schematically shows an example of a latch locking device according to an embodiment of the present invention, in which (a) is a schematic side view with a part omitted, and (b) corresponds to an X1-X1 line arrow view in (a). FIG. (A) is a schematic side view in which a part of the latch lock device is omitted, and (b) is a schematic cross-sectional view corresponding to the X2-X2 line arrow in (a). (A) is the schematic side view which abbreviate | omitted a part of the latch lock apparatus, (b) is a schematic cross-sectional view corresponding to the X3-X3 line arrow view in (a). It is the general | schematic disassembled perspective view which abbreviate | omitted a part of the latch locking device. (A), (b) is the schematic perspective view which abbreviate | omitted a part of the latch locking device. (A) is a schematic perspective view of the latch lock device, and (b) is a schematic side view (inside surface) schematically showing an example of one part constituting the latch lock device. It is a partially broken schematic exploded perspective view schematically showing an example of a door device according to an embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 7 are views schematically showing an example of a latch lock device according to the present embodiment and a door device provided with the latch lock device.
In some of the drawings, some of the detailed reference numerals attached to other drawings are omitted.
Further, in the following embodiments, the door width direction and the door thickness direction will be described with reference to the state in which the latch lock device is incorporated in the door body, and the state in which the door body in which the latch lock device is incorporated is built. As a reference, the direction such as the vertical direction will be described.

As shown in FIGS. 1 and 2, the latch lock device 10 according to the present embodiment is displaceable in the door width direction on the lock cases 11 and 21 incorporated in the door body 2, and has one end (latch) in the door width direction. The head member 31 is provided with a latch member 30 in which the head 31 is projected and retracted. The latch lock device 10 is configured such that the lock cases 11 and 21 are provided with a lock mechanism 40 that suppresses the movement of the latch member 30 in the protruding state in the immersion direction in the locked state.
As shown in FIG. 7, the door device 1 according to the present embodiment is provided with a latch lock device 10 according to the present embodiment and an accommodation recess 3 in which the latch lock device 10 is incorporated at the end of the door. And a door 2. The door device 1 includes handles 6 and 6 that are operated when the door 2 is opened and closed.

The door body 2 of the door device 1 is built in an opening constituting an entrance provided so as to penetrate a wall of a building such as a residence. Further, the door body 2 is connected to a hanging base side vertical frame of a door frame provided so as to define an entrance and exit, and the hanging side end portion is rotatably connected about an axis along the vertical direction by a hinge or the like to constitute a hinged door. To do. Moreover, the door frame etc. are provided with the door stop etc. which suppress the rotation to the further closed side (anti-open side) of the door body 2 made into the closed state. Moreover, the latch head 31 of the latch lock device 10 provided at the door end side end which is the free end side of the door body 2 is inserted into a latch receiver (strike) provided at the door frame side vertical frame of the door frame. The closed state of the door body 2 is maintained. On the other hand, if the latch head 31 is immersed, the engagement with the latch receiver is released and the door 2 can be opened. In addition, you may make it grasp | ascertain as the door apparatus 1 including the door frame in which the door body 2 is built.

The door body 2 has a substantially rectangular flat plate shape that is long in the up-down direction, and has a housing recess 3 provided so as to open at the door end side end surface. The housing recess 3 is formed in a digging shape in the door width direction, and has a shape corresponding to the outer shape of the latch lock device 10. In the illustrated example, the dimension along the vertical direction and the dimension along the door thickness direction of the opening side part 3a on the door-end side is larger than the depth part 3b, and the dimension (depth) along the door width direction of the opening side part 3a. An example is shown in which the dimension) is smaller than the back side portion 3b. That is, the accommodation recess 3 has a stepped hole shape in which the opening side portion 3a is larger in diameter than the back side portion 3b.
The door body 2 is provided with handle mounting openings 4 and 4 (one is not shown in FIG. 7) so as to communicate with the housing recess 3 and to be opened on both sides in the door thickness direction. . These handle attachment openings 4 and 4 are provided so as to overlap with a shaft insertion hole 35 described later of the latch lock device 10 in the door thickness direction when the latch lock device 10 is assembled.

The handles 6 and 6 are provided on both sides in the door thickness direction of the door end side end of the door body 2 and are operated when the latch head 31 of the latch lock device 10 is immersed. In the present embodiment, the handles 6 and 6 are configured to be rotatable around an axis along the door thickness direction, and the latch head 31 is immersed with these rotational operations. Further, these handles 6 and 6 are lever handles whose grip portions are in the shape of elongated bars. Further, these handles 6 and 6 are provided with a substantially cylindrical rotation base serving as a rotation fulcrum of the lever portion, and these rotation bases are attached so as to be fitted into the handle attachment openings 4 and 4. Of these handles 6 and 6, a connecting shaft 7 inserted into the shaft insertion hole 35 of the latch lock device 10 is provided at the rotation base of one handle 6 </ b> A so as to extend in the door thickness direction. A fitting recess 8 into which the distal end portion of the connecting shaft 7 is fitted is provided at the rotation base portion of the other handle 6B so as to open in the door thickness direction.

The connecting shaft 7 of one handle 6A has a quadrangular prism shape, and the fitting recess 8 of the other handle 6B has a square hole shape corresponding to the connecting shaft 7 and having a substantially rectangular shape when viewed in the door thickness direction. It is said that.
These handles 6 and 6 are inserted into the shaft insertion hole 35 of the latch lock device 10 and the other handle is inserted into the distal end portion of the connecting shaft 7 of one handle 6A fitted in the fitting recess 8 of the other handle 6B. It is good also as a structure assembled | attached by fasteners, such as a screw fixed (screwed in) via the base part of 6B.
Moreover, it is good also as a structure provided with the base for handles (attachment seat) which receives the rotation base part of these handles 6 and 6, and is fixed to the door thickness direction both surfaces of the door body 2. FIG. In this case, the locking / unlocking member 9 to be described later may also be attached to the handle base. The handles 6 and 6 are not limited to lever handles, but may be handles of other shapes such as a round knob (handball).

Moreover, in this embodiment, the door apparatus 1 is provided with the locking / unlocking member 9 which makes the lock mechanism 40 of the latch lock apparatus 10 a locked state (locked state) and an unlocked state (unlocked state). As such a locking / unlocking member 9, one having a keyhole to be operated by a key, one having a knob (lever part) for rotating operation, and an emergency unlocking operation part operated by an appropriate jig It may be provided with In the illustrated example, the locking / unlocking member 9 on one side in the door thickness direction has a knob, and the latch locking device 10 functions as a so-called partition lock. In this case, it is good also as a structure which provided the locking / unlocking member which comprises an emergency unlocking operation part in the door thickness direction other side, and also provided the display part which shows a locking state and an unlocking state, and the latch lock apparatus 10 is It is good also as what functions as what is called a display lock.
The door body 2 accommodates locking / unlocking member mounting openings 5, 5 (one of which is not shown in FIG. 7) to which the locking / unlocking members 9, 9 (one of which is not shown in FIG. 7) are attached. It is provided so as to communicate with the recess 3 and open on both sides in the door thickness direction. The locking / unlocking member mounting openings 5 and 5 are provided so as to overlap with the locking / unlocking connecting portions 42 and 42 described later of the latch locking device 10 in the door thickness direction in a state where the latch locking device 10 is assembled. It has been.

As shown in FIG. 4, FIG. 6A and FIG. 7, the latch lock device 10 includes a latch member in a thin box-shaped lock case 11, 21 whose dimension along the door thickness direction is relatively small. (Latch bolt) 30 and a lock mechanism 40 are incorporated. Further, the latch lock device 10 is configured such that a hub member 34 that constitutes an operating portion that is connected to the handles 6 and 6 and advances and retracts the latch member 30 is incorporated in the lock cases 11 and 21. Moreover, the latch lock apparatus 10 is provided with the front cover 20 fitted in the opening side site | part 3a so that the opening side site | part 3a of the accommodation recess 3 of the door 2 may be covered.

The front cover 20 is in the form of a thin plate arranged along the thickness direction in the door width direction. The front cover 20 functions as a decorative member of the latch lock device 10 that is embedded in the door body 2 and exposed at the door end side end surface of the door body 2. In addition, a latch head portion 31 of the latch member 30 is inserted into a part of the front cover 20 in the vertical direction (in the figure, the substantially central part in the vertical direction) so as to penetrate in the thickness direction (door width direction). A latch insertion hole 20a is provided. Further, insertion holes for fasteners such as screws that are fixed (screwed) to the door body 2 are provided at both ends of the front cover 20 in the vertical direction. Moreover, this front cover 20 is set as the structure attached to the door body 2 so that the surface (door front side surface (surface)) which faces a door-end side becomes substantially the same planar shape as the door-end side end surface of the door body 2. Yes. The front cover 20 may be made of resin as in the lock cases 11 and 21 described later, but may be made of metal such as stainless steel.

The lock cases 11 and 21 are a combination of a first case 11 and a second case 21 which are divided in the door thickness direction and hold the lock mechanism 40 so as to sandwich the lock mechanism 40 from both sides in the door thickness direction. It is configured. In addition, the lock cases 11 and 21 are dropped to prevent the lock mechanism 40 from moving downward when the first case 11 and the second case 21 are deformed so that the lock mechanism 40 is released. The prevention wall 29 is provided (refer FIG.5 (b) and FIG.6 (b)). In addition, protrusions 18a and 28a projecting toward the door-end side are provided on the inner walls 18 and 28 on the back side of the first case 11 and the second case 21 where the other ends 32 of the latch members 30 face each other. It is configured (see FIG. 3B).

The first case 11 and the second case 21 are integrally formed from a synthetic resin material such as polyacetal (POM), polyethylene terephthalate (PET), and polycarbonate (PC). The first case 11 and the second case 21 may be resin molded products that are injection-molded.
Further, the first case 11 and the second case 21 divided in the door thickness direction are formed into a thin box shape that opens in a direction facing each other, which is a direction along the door thickness direction, and these inner spaces are latched. A housing space for various members described later, such as the member 30, the hub member 34, and the lock mechanism 40, is formed. In the present embodiment, the dimension (depth dimension) along the door thickness direction of the first case 11 is larger than that of the second case 21.

The first case 11 and the second case 21 are provided with a plurality of engaging portions 14b, 15a, 16a, 17a, 24, 25a, 26a, and 27a that engage with each other to suppress disassembly. Yes. In the present embodiment, the first case 11 and the second case 21 are engaged with the engaging portions 14b, 15a, 16a, 17a, 24, 25a, 26a, and 27a without using a fastening element such as a screw. It is set as the structure assembled by making it.
The first case 11 and the second case 21 are provided with thin plate-like base plate portions 12 and 22 that divide both sides of the accommodation space in the door thickness direction and are arranged along the thickness direction in the door thickness direction. ing. A latch member 30, a hub member 34, and a lock mechanism 40, which will be described later, are held by these base plate portions 12 and 22 on both sides in the door thickness direction so as to be sandwiched from both sides in the door thickness direction. These base plate parts 12 and 22 are substantially rectangular when viewed in the door thickness direction.

In addition, the first case 11 includes a front wall portion 14 that partitions the door end side, a top wall portion 15 that partitions the upper side, a bottom wall portion 16 that partitions the lower side, and a suspension base side (four sides) around the base plate portion 12. It is set as the structure which provided the back side wall part 17 which divides (back side). The front wall portion 14, the top wall portion 15, the bottom wall portion 16, and the back side wall portion 17 are provided in a series so as to protrude from the four peripheral edges of the base plate portion 12 in the door thickness direction.
In the present embodiment, the front wall portion 14 of the first case 11 also functions as the front wall portion of the second case 21. That is, the second case 21 is suspended from the top wall 25 that defines the upper side and the bottom wall 26 that defines the lower side at the upper and lower and rear side edge portions of the base plate portion 22 without providing the front wall portion. It is set as the structure which provided the back side wall part 27 which divides the former side (back side). The top wall portion 25, the bottom wall portion 26, and the back side wall portion 27 are provided in a series so as to protrude from the upper edge portion, the lower edge portion, and the back side edge portion of the base plate portion 22 in the door thickness direction. ing. The top wall portions 15 and 25 of the lock cases 11 and 21, the bottom wall portions 16 and 26, and the back wall portions 17 and 27 are in a state where the lock cases 11 and 21 are assembled, and the front end surfaces in the protruding direction are It is generally abutted (abutted) over the entire surface.

The front wall portion 14 of the first case 11 has a thin plate shape that is arranged along the thickness direction in the door width direction. The front wall portion 14 projects in a bowl shape from the four peripheral edges of the door end side end portion of the case main body portion having a substantially rectangular parallelepiped box shape in a state where the first case 11 and the second case 21 are assembled. And is configured to be received by the opening side portion 3 a of the housing recess 3 of the door body 2. The front cover 20 described above is attached to the door body 2 so as to overlap the surface of the front wall portion 14 facing the door end side.
In addition, a latch head 31 of the latch member 30 is inserted into a part in the middle of the front wall portion 14 in the vertical direction (in the illustrated example, a substantially central part in the vertical direction) so as to penetrate in the plate thickness direction (door width direction). The latch insertion hole 14a is aligned with the latch insertion hole 20a of the front cover 20. Further, insertion holes that penetrate in the plate thickness direction are provided at both ends in the vertical direction of the front wall portion 14 so as to be aligned with the vertical insertion holes of the front cover 20, respectively.

Engagement recesses 14b and 14b constituting an engagement part are provided on both upper and lower sides of the latch insertion hole 14a of the front wall part 14. These engaging recesses 14b, 14b are provided so as to open toward the suspension base side (back side). In the illustrated example, the engagement recesses 14b and 14b are illustrated as having an approximately rectangular shape that is elongated vertically when viewed in the opening direction (as viewed in the thickness direction of the front wall portion 14). In addition, these engagement recessed parts 14b and 14b may be provided so that the front wall part 14 may be penetrated in the plate | board thickness direction.
Insertion piece parts 24 and 24 constituting an engaging part are provided at the door end side end part of the base plate part 22 of the second case 21. These insertion pieces 24 and 24 are inserted into the engaging recesses 14b and 14b of the front wall portion 14 of the first case 11 so as to protrude from the door end side end surface of the base plate portion 22 toward the door tip side. It is provided as possible. By inserting the insertion pieces 24, 24 at the door end side end of the base plate portion 22 of the second case 21 into the engaging recesses 14 b, 14 b of the front wall portion 14 of the first case 11, these lock cases 11 , 21 can be prevented from being decomposed in the door thickness direction between the door end side ends.

Further, the top wall portion 15, the bottom wall portion 16, and the back side wall portion 17 of the first case 11 are provided with locking projections 15 a, 16 a, and 17 a that constitute the engaging portion. In the illustrated example, a locking projection 15 a that protrudes upward is provided on the outer surface of the door-end side portion of the top wall portion 15, and the protrusion that protrudes downward is provided on the outer surface of the door-end portion of the bottom wall portion 16. The example which provided the stop protrusion 16a is shown. Moreover, the example which provided the latching protrusions 17a and 17a which protrude toward the suspension base side in the outer surface of the up-and-down both sides site | part of the back side wall part 17 is shown.
Locking recesses 25 a, 26 a, 27 a, 27 a constituting the engaging portion are provided on the top wall portion 25, the bottom wall portion 26 and the back side wall portion 27 of the second case 21. These locking recesses 25a, 26a, 27a, and 27a can be locked to locking protrusions 15a, 16a, 17a, and 17a provided on the first case 11, respectively. It is provided to be at a position corresponding to 17a.

That is, an example in which a locking recess 25a that opens downward is provided at the door-end side portion of the top wall portion 25 and a locking recess 26a that opens upward at the door-end side portion of the bottom wall portion 26 is provided. Show. Moreover, the example which provided the latching recessed parts 27a and 27a opened toward the door-end side in the up-and-down both sides site | part of the back side wall part 27 is shown. Further, in the illustrated example, a thin plate-like projecting piece projecting in the door thickness direction is provided on the top side portion 25 and the bottom wall portion 26 of the second case 21 and the top and bottom side portions of the back side wall portion 27. In the example, the locking recesses 25a, 26a, 27a, and 27a are provided so as to penetrate these projecting pieces.
By locking the locking projections 15a, 16a, 17a and 17a of the first case 11 and the locking recesses 25a, 26a, 27a and 27a of the second case 21, the upper ends of the lock cases 11 and 21 are connected to each other. Moreover, decomposition | disassembly to the door thickness direction of lower end parts and suspension origin side edge parts is suppressed.

Moreover, in this embodiment, as an engaging part engaged in the door thickness direction in the up-down direction middle part of the back side wall part 17 of the first case 11 and the up-down direction middle part of the back side wall part 27 of the second case 21. The engaging recess 17b and the engaging protrusion 27b are provided. In the illustrated example, an engagement recess 17b that opens in the door thickness direction is provided on the abutment surface of the back side wall portion 17 of the first case 11, and the abutment surface of the back side wall portion 27 of the second case 21 is provided in the door thickness direction. The example which provided the engagement protrusion 27b which protrudes toward is shown. By engaging these engagement recesses 17b with the engagement protrusions 27b, positional displacement in the direction parallel to the both sides of the door thickness direction between the vertical side portions 17 and 27 of the back side wall portions 17 and 27 of the lock cases 11 and 21, etc. Is suppressed.

Moreover, as shown in FIG.3 (b), in the inner side walls 18 and 28 which face the door tip side of the inner wall part 17 of the first case 11 and the inner wall part 27 of the second case 21, Protrusions 18a and 28a are provided on the respective protrusions so as to protrude toward the front.
Although these protrusions 18a and 28a may be provided over the entire vertical direction of the inner walls 18 and 28, in this embodiment, in the middle of the vertical direction of the inner walls 18 and 28 in the vertical direction (in the illustrated example, the upper and lower sides). The configuration is provided only in the direction center. These protrusions 18a and 28a are provided so as to be positioned on the suspending side of the other end 32 of the latch member 30 described later. That is, the protrusions 18a and 28a are provided so as to overlap with the other end 32 of the latch member 30 when viewed in the door width direction.
In addition, the protrusions 18a and 28a are provided at the front end portions of the rear side wall portions 17 and 27 on the abutting side. That is, it is set as the structure which provided these protrusion parts 18a and 28a so that the clearance gap along a door thickness direction might be provided between the base board parts 12 and 22. FIG. In other words, the engagement recess opening toward the door end side is defined by the protrusions 18a and 28a, the base plate portions 12 and 22 and the back side wall portions 17 and 27.

Moreover, it is set as the structure by which the opposing side surfaces which face the door thickness direction of protrusion 18a, 28a face each other in the state where each back side wall parts 17 and 27 were faced | matched.
Moreover, in this embodiment, the dimension along the door thickness direction from the base board parts 12 and 22 of the site | part in which the protrusion parts 18a and 28a in the back side wall parts 17 and 27 of each case 11 and 21 were provided is substantially mutually the same. Dimension. In other words, as shown in FIG. 4, the dimension along the door thickness direction of the substantially central portion in the vertical direction of the back side wall portion 17 of the first case 11 is made smaller than both the upper and lower side portions, and the back side wall portion of the second case 21. The dimension along the door thickness direction of the central part of the vertical direction of 27 is made larger than the upper and lower side parts.
Moreover, the thickness dimension of the site | part in which the protrusions 18a and 28a in the back side wall parts 17 and 27 of each case 11 and 21 were provided is made into the mutually substantially same dimension, and is larger than the thickness dimension of the base board parts 12 and 22. It ’s big.

In addition, the thickness dimensions of the central portions in the vertical direction of the end portions on the suspending side that are the vicinity of the protrusions 18a and 28a in the base plate portions 12 and 22 of the cases 11 and 21 are substantially the same as each other, and the base plate It is larger than other parts of the parts 12 and 22. In the example shown in the figure, the substantially vertical center of the suspension side end of the base plate portion 12 or 22 of each case 11 or 21 is projected in a protruding step shape toward the outside in the door thickness direction from other portions. An example in which the thickness is made larger than other portions is shown. Moreover, it is set as the structure which provided the through-hole penetrated in the thickness direction in the up-down direction approximate center part of the suspension side edge part of the base board parts 12 and 22 of each case 11 and 21. As shown in FIG. These through holes are formed in a substantially rectangular hole shape that is long in the vertical direction when viewed in the door thickness direction, and are provided so as to overlap the protrusions 18 a and 28 a of the cases 11 and 21. In addition, you may make it not provide such a through-hole.

Further, the front end surfaces of the protrusions 18 a and 28 a in the protruding direction facing the door tip side are formed into flat surfaces substantially parallel to the door side surface of the front cover 20. Moreover, the protrusion dimension D1 along the door width direction of the protrusions 18a and 28a of the cases 11 and 21 is set to be approximately the same. That is, the projecting direction front end surfaces of the protrusions 18a and 28a are configured to be substantially flush with each other in a state where the lock cases 11 and 21 are assembled.
In addition, both side surfaces in the door thickness direction of the protrusions 18 a and 28 a are flat surfaces substantially parallel to both sides in the door thickness direction of the door body 2. Moreover, the width dimension along the door thickness direction of protrusion 18a, 28a of each case 11 and 21 is made into the mutually substantially same dimension. The vertical dimensions of the protrusions 18a and 28a of the cases 11 and 21 are substantially the same. The projecting dimension D1, width dimension, and vertical dimension of these projecting parts 18a, 28a are from the viewpoints of their own strength, engagement strength with respect to the receiving recess 49 of the lock piece part 45 to be described later, etc. It is good also as an appropriate dimension.

With these protrusions 18a and 28a, the width dimension along the door thickness direction is made substantially the same dimension on the base plate part 12 and 22 side of each protrusion 18a and 28a, and the depth dimension along the door width direction (D1) ) Are formed to have substantially the same dimensions as each other. The inner walls 18 and 28 on the back side that constitute the bottom surfaces of the engagement recesses of the cases 11 and 21 are flat surfaces substantially parallel to the door side surface of the front cover 20 and the lock cases 11 and 21 are assembled. In the state, they are configured to be substantially flush with each other.
In the example shown in the figure, the lower ends of the protrusions 18a and 28a are provided in a series in the portions where the engagement recesses 17b and the engagement protrusions 27b having a thickness larger than other portions are provided. However, the present invention is not limited to such a mode.
Further, other specific configurations related to the latch member 30, the hub member 34, and the lock mechanism 40 which will be described later in each case 11, 21 will be described later together with these descriptions.

The latch member 30 is elongated in the door width direction, one end in the door width direction is a latch head (latch head) 31, and the other end in the door width direction is engaged with the hub member 34. The engaging portion 32 is used. The surface of the latch head 31 facing the opening direction front side (reverse door contact side) of the door body 2 is a flat locking surface that is substantially parallel to both door thickness direction surfaces of the door body 2. Further, the latch head 31 is a guide surface that is inclined or curved toward the locking surface as the surface facing the rear side (door contact side) of the door body 2 toward the door width direction outward side of the door body 2 ( Sliding surface) (see also FIG. 1B, etc.).

The engaged portion 32 is provided in a hook shape (disk shape) at the suspending side end of a rod-shaped portion extending in the door width direction provided on the proximal end side (suspending side) of the latch head 31. . The surface of the engaged portion 32 facing the suspending side is a flat surface substantially parallel to the door side surface of the front cover 20.
Further, the latch lock device 10 is provided with a latch urging member 33 that urges the latch member 30 in the protruding direction. In the illustrated example, the latch urging member 33 is a compression coil spring that is externally mounted on a rod-like portion on the proximal end side of the latch head 31. The lock cases 11 and 21 receive the rod-like portion of the latch member 30 so as to be inserted therethrough, while abutting wall portions 12e and 22e for suppressing the movement of the end portion of the latch biasing member 33 toward the suspension side. (See also FIG. 1 and the like). In this way, the latch urging member 33 whose movement toward the suspending side is suppressed is latched in a direction in which the door end side end abuts on the base end side of the latch head 31 and the latch head 31 protrudes. 30 is energized.

In the present embodiment, the latch member 30 is configured to be displaceable in the door width direction at a substantially central portion in the vertical direction of the lock cases 11 and 21.
In addition, as shown in FIG. 1, the latch member 30 has a locking surface of the latch head 31 that is in a protruding state and is locked to the inner wall of the latch receiver of the door-end side vertical frame. It is set as the structure which suppresses rotation to.
Further, the latch member 30 resists the urging of the latch urging member 33 as shown in FIG. 2 when the handles 6 and 6 are rotated to the open side or an external force or the like in the immersion direction is applied ( The latch head 31 is configured to be immersed (with compression deformation). In the illustrated example, an example is shown in which the tip of the latch head 31 slightly protrudes from the door side surface of the front cover 20 in the immersed state, but the entire latch head 31 is configured to be immersed. May be good. The latch member 30 may be rotated about an axis along the longitudinal direction of the latch member 30 to change the direction of the locking surface.

The hub member 34 is configured to immerse the latch member 30 with the rotation operation of the handles 6 and 6. The hub member 34 is provided with a shaft insertion hole 35 through which the connecting shaft 7 of the handles 6 and 6 is inserted so as to penetrate in the door thickness direction. The shaft insertion hole 35 is formed in a square hole shape corresponding to the connecting shaft 7 and having a substantially rectangular shape when viewed in the door thickness direction. Further, as shown in FIGS. 1A and 4, the portion of the hub member 34 provided with the shaft insertion hole 35 has a generally circular outer shape when viewed in the door thickness direction, and protrudes on both sides in the door thickness direction. It is set as the protrusion part shape which carries out, and it is set as the structure exposed in the door thickness direction both surfaces of the lock cases 11 and 21. As shown in FIG. The base plate portions 12 and 22 of the lock cases 11 and 21 are fitted with protruding portions on both sides in the door thickness direction of the hub member 34 so that the hub member 34 can freely rotate about an axis along the door thickness direction. Hub holding holes 12a and 22a are provided for holding. The hub holding holes 12a and 22a are provided so as to pass through the base plate portions 12 and 22 in the thickness direction and overlap each other when viewed in the door thickness direction.

Moreover, the dimension along the door thickness direction of the base part except the part made into the step-shaped part of the door thickness direction both sides of the hub member 34 is suitable for the door thickness direction of the base board parts 12 and 22 of the lock cases 11 and 21. It is a dimension according to the dimension between both inner surfaces. With such a configuration, the hub member 34 is held between the lock cases 11 and 21 from both sides in the door thickness direction.
The hub member 34 is provided with an engaging portion 36 that engages with the engaged portion 32 of the latch member 30. The engaging portions 36 are provided in pairs in the door thickness direction so as to receive the rod-shaped portions of the latch member 30, and engage with the engaged portions 32 of the latch member 30 having a hook shape. The engaged portion 32 is configured to be displaced in the retracting direction on the suspending side. In the illustrated example, the engaging portion 36 protrudes upward from a portion (base portion) in which the shaft insertion hole 35 of the hub member 34 provided so as to be positioned below the latch member 30 is provided. The arm is provided.

Further, in the latch lock device 10, the hub member 34 (handles 6 and 6) rotated in the direction in which the latch member 30 is inserted is returned to a normal state (a state where the engaged portion 32 is located on the door end side). A return biasing member 39 that biases in the direction is provided. In the illustrated example, the return urging member 39 is a compression coil spring that is expanded and contracted in the door width direction on the lower side of the latch member 30. The door end side end portion of the return urging member 39 is brought into contact with the front wall portion 14 of the lock case 11, 21 so that the movement toward the door end side is suppressed. The lock cases 11 and 21 are provided with appropriate holding portions for holding the door end side end portions of the return urging members 39 so that the return urging members 39 can expand and contract. Further, a slide body 38 that is displaceable in the door width direction is attached to the end of the return biasing member 39 on the suspension base side. The slide body 38 is provided with a recess that opens toward the door end side and receives the end of the return biasing member 39 on the suspension base side.

Further, on both sides of the sliding body 38 in the door thickness direction, protruding step portions 38a and 38a that protrude on both sides of the door thickness direction are provided. The base plate portions 12 and 22 of the lock cases 11 and 21 have a long shape so as to extend in the door width direction in which the protruding step portions 38a and 38a on both sides in the door thickness direction of the slide body 38 are slidably received in the door width direction. Guide grooves 12c and 22c are provided. These guide grooves 12c and 22c are provided so as to pass through the base plate portions 12 and 22 in the thickness direction and overlap each other when viewed in the door thickness direction. In addition, the dimension along the door thickness direction of the portion excluding the protruding step portions 38a and 38a of the slide body 38 depends on the dimension between the inner surfaces of the base plate portions 12 and 22 of the lock cases 11 and 21 facing the door thickness direction. It is the size. The lock cases 11 and 21 are provided with guide wall portions that are in contact with or close to both upper and lower side surfaces of the slide body 38. In the illustrated example, the lower guide wall portion is the bottom wall portion 16 of the first case 11.

Further, the hub member 34 is provided with a receiving portion 37 that abuts the slide body 38 and is biased toward the suspension base side. The receiving portion 37 is provided so as to protrude downward from a portion (base portion) where the shaft insertion hole 35 of the hub member 34 is provided. The receiving portion 37 is brought into contact with the rear side wall portions 17 and 27 that define the suspension base side of the lock cases 11 and 21, and movement to the suspension base side is suppressed. The hub member 34 is in a normal state in which the receiving portion 37 is in contact with the rear side wall portions 17 and 27, and in this state, the receiving portion 37 is urged toward the suspension side by the return urging member 39. The state is sandwiched between the slide body 38 and the back side wall portions 17 and 27. On the other hand, if the hub member 34 is rotated with the rotation of the handles 6, 6, the receiving portion 37 and the slide body 38 pushed by the door 37 are pressed against the urging of the return urging member 39 (with compression deformation). It is set as the structure displaced so that it may move to the front side. The hub member 34 (handles 6 and 6) is maintained in a normal state by the engagement portion 36 abutting against the abutment wall portions 12e and 22e in addition to the abutment of the receiving portion 37 with respect to the back side wall portions 17 and 27. That is, further rotation of the handles 6 and 6 toward the opposite side may be suppressed.

The lock mechanism 40 includes a lock piece 45 that can be displaced in the vertical direction. Further, as shown in FIG. 3A, the lock mechanism 40 faces the engaged portion 32 of the latch member 30 in the protruding state and the door end side of the lock cases 11 and 21 where the engaged portion 32 faces. Between the back side inner walls 18 and 28, the lock piece part 45 moved to the lower side is arranged to be in a locked state. As shown in FIG. 1A, the lock mechanism 40 is arranged to be positioned above the latch member 30 in the unlocked state. In this unlocked state, between the engaged portion 32 of the latch member 30 and the inner walls 18 and 28 on the back side of the lock cases 11 and 21 (the front end surfaces of the protrusions 18a and 28a), the latch member 30 is inserted in the immersion direction. A space that allows movement of is formed.
The locking mechanism 40 is provided with a locking / unlocking portion 41 that displaces the lock piece 45 in the vertical direction. In the present embodiment, the locking / unlocking portion 41 and the lock piece portion 45 are separated. Further, the locking / unlocking portion 41 is rotated around an axis along the door thickness direction, and the lock piece portion 45 is displaced in the vertical direction.

As shown in FIGS. 1A and 3A, the locking / unlocking portion 41 is configured to be positioned above the hub member 34, and is connected to the locking / unlocking member 9 described above. It is set as the structure rotated around the axis | shaft along a door thickness direction with operation of the locking / unlocking member 9 (refer also FIG. 7). As shown in FIGS. 4 and 5, the locking / unlocking portion 41 has locking and unlocking coupling portions 42, 42 that protrude in a protruding step shape on both sides in the door thickness direction and have a substantially circular shape when viewed in the door thickness direction. Is provided. These locking / unlocking coupling portions 42, 42 are rotatably held by the lock cases 11, 21, and constitute a shaft portion along the door thickness direction of the locking / unlocking portion 41. Moreover, these locking / unlocking coupling portions 42 and 42 are configured to be exposed on both sides of the lock cases 11 and 21 in the door thickness direction. The base plate portions 12 and 22 of the lock cases 11 and 21 are fitted with the locking and unlocking coupling portions 42 and 42, and the locking and unlocking portion holding holes for holding the locking and unlocking portion 41 rotatably about the axis along the door thickness direction. 12b and 22b are provided. These locking / unlocking part holding holes 12 b and 22 b function as a holding part of the lock mechanism 40. The locking / unlocking part holding holes 12b and 22b are provided so as to penetrate the base plate parts 12 and 22 in the thickness direction and overlap each other when viewed in the door thickness direction.

Further, the dimension along the door thickness direction of the base of the locking / unlocking portion 41 that is substantially cylindrical so as to have a larger diameter than these locking / unlocking connection portions 42, 42 (parts excluding the locking / unlocking connection portions 42, 42) Is a dimension corresponding to the dimension between the inner surfaces of the base plate portions 12 and 22 of the lock cases 11 and 21 facing the door thickness direction. With such a configuration, the locking / unlocking portion 41 is sandwiched and held by the lock cases 11 and 21 from both sides in the door thickness direction.
The locking / unlocking connecting portions 42, 42 are provided with connecting recesses to which the locking / unlocking member 9 is connected.
In addition, it is good also as a structure which provided these locking / unlocking connection parts 42 and 42 so that it might become substantially the same planar shape as the door thickness direction both surfaces of the lock cases 11 and 21, and from the door thickness direction both surfaces of the lock cases 11 and 21 It is good also as a structure provided so that it might protrude slightly in the door thickness direction outer side. Further, in the illustrated example, the locking and unlocking coupling portions 42 and 42 are provided so as to be positioned substantially immediately above the shaft insertion hole 35 of the hub member 34 when viewed in the door thickness direction.

The locking / unlocking portion 41 is provided with a lock holding piece portion that is connected to the upper end side of the lock piece portion 45 and holds the lock piece portion 45 rotatably. The lock holding piece portion is provided so as to protrude in the radial direction from the substantially cylindrical base portion of the locking / unlocking portion 41.
As shown in FIG. 1A, the lock holding piece portion is configured to be arranged so as to protrude from the base portion of the locking / unlocking portion 41 to the suspension side in the unlocked state. In this way, when the locking / unlocking portion 41 is in the unlocked state, the lock holding piece portion is configured to be positioned at the upper end in the lock cases 11 and 21 and the corner on the hanging side. Moreover, as shown to Fig.3 (a), a lock holding | maintenance piece part is set as the structure distribute | arranged so that it may protrude below from the base of the locking / unlocking part 41 in a locked state. In other words, the lock holding piece portion is located obliquely downward on the door end side from the upper corner of the lock cases 11 and 21 and the corner on the hanging side when the locking and unlocking portion 41 is changed from the unlocked state to the locked state. It is displaced so as to draw an arc around the locking / unlocking coupling portions 42, 42.

Moreover, as shown to FIG.4 and FIG.5 (a), the example which provided the lock holding | maintenance piece part so that it might protrude in the radial direction from the door thickness direction one side site | part of the base part of the locking / unlocking part 41 is shown.
Further, the locking / unlocking portion 41 and the lock piece portion 45 may be rotatably connected to each other by a separate shaft member, but in this embodiment, the connecting shaft portion 46 is integrally formed on one side. The bearing hole 43 is provided on the other side for receiving it. Moreover, in this embodiment, it is set as the structure which provided the bearing hole 43 in which the connection shaft part 46 provided in the lock piece part 45 mentioned later was rotatably inserted in the lock holding piece part of the locking / unlocking part 41. FIG. Further, as shown in FIG. 5A, the bearing hole 43 is provided so as to penetrate the lock holding piece portion in the door thickness direction, and has a substantially circular hole shape when viewed in the door thickness direction. In addition, a key groove-like narrow groove 43a extending in the door thickness direction is provided on the inner peripheral wall of the bearing hole 43 so as to open toward the axial center (hole center) side over the entire axial direction of the bearing hole 43. The configuration is provided.

Further, as shown in FIGS. 1 (a) and 3 (a), the latch locking device 10 is a posture maintaining member that maintains the locked / unlocked portion 41 in the locked state and the unlocked state in the respective states (postures). 19 is provided. In this embodiment, the posture maintaining member 19 is a torsion spring (torsion spring) in which one arm end is rotatably connected to the lock cases 11 and 21 and the other arm end is rotatably connected to the locking / unlocking portion 41. ). The lock cases 11, 21 are provided with connecting projections 12 d protruding in the door thickness direction that are inserted through insertion holes provided to penetrate one arm end of the posture maintaining member 19 in the door thickness direction ( (See also FIG. 4). In the illustrated example, the connection protrusion 12d is provided so as to be positioned obliquely below the door-end side of the locking / unlocking connection portions 42, 42. Moreover, in the example of a figure, the example which provided this connection protrusion 12d so that it might protrude in the door thickness direction from the inner surface of the base board part 12 of the 1st case 11 is shown. Moreover, the example which provided the engagement protrusion part made into small diameter shape in the front-end | tip part of this connection protrusion 12d is shown. Moreover, the example which provided the engagement recessed part 22d by which the engagement protrusion part of this connection protrusion 12d is fitted in the base board part 22 of the 2nd case 21 is shown (refer FIG. 4). The engagement recess 22d is provided so as to overlap with the engagement protrusion of the connection protrusion 12d when viewed in the door thickness direction. In the example shown in the figure, the engaging recess 22d is provided so as to penetrate the base plate portion 22 in the thickness direction.

Further, the locking / unlocking portion 41 is provided with a spring connecting piece portion to which the other arm end of the posture maintaining member 19 is connected. The spring connecting piece portion is provided so as to protrude in the radial direction from the substantially cylindrical base portion of the locking / unlocking portion 41 and to be different from the lock holding piece portion in the circumferential direction. In the illustrated example, the spring connecting piece portion and the lock holding piece portion are provided at the base portion of the locking / unlocking portion 41 so as to be shifted by approximately 90 degrees in the circumferential direction.
As shown in FIG. 1A, the spring connecting piece portion is arranged to protrude downward from the base portion of the locking / unlocking portion 41 in the unlocked state. Moreover, as shown to Fig.3 (a), a spring connection piece part is set as the structure arrange | positioned so that it may protrude from the base part of the locking / unlocking part 41 to the door-end side in a locked state. In this way, when the locking / unlocking portion 41 is in the locked state, the spring connecting piece portion is configured to be positioned at the upper end in the lock cases 11, 21. In other words, the spring connecting piece portion is configured so that when the locking / unlocking portion 41 is changed from the unlocked state to the locked state, the locking / unlocking connecting portion is inclined from the lower position of the base portion of the locking / unlocking portion 41 toward the diagonally upper side of the door. 42 and 42 are displaced so as to draw an arc.

Further, as shown in FIG. 5 (b), the spring connecting piece portion of the locking / unlocking portion 41 is inserted through an insertion hole provided so as to penetrate the other arm end of the posture maintaining member 19 in the door thickness direction. A connecting projection 44 projecting in the door thickness direction is provided. The connection protrusion 44 is provided so as to protrude from the spring connection piece portion of the locking / unlocking portion 41 toward the base plate portion 12 side of the first case 11. The base plate portion 12 of the first case 11 receives the connection protrusion 44 of the spring connection piece portion, and in the door thickness direction for guiding the connection protrusion 44 of the spring connection piece portion that is displaced so as to draw an arc as described above. A guide groove formed in an arc shape when viewed is provided. In the illustrated example, an example in which guide grooves are provided in a concave groove shape on the inner surface side of the base plate portion 12 is shown.
The posture maintaining member 19 connected to the lock cases 11 and 21 and the locking / unlocking portion 41 as described above maintains the unlocking / unlocking portion 41 in the unlocked state as shown in FIG. As described above, the spring connecting piece portion of the locking / unlocking portion 41 is generally configured to be biased toward the direction of the suspension side. Further, as shown in FIG. 3 (a), the posture maintaining member 19 has the spring connecting piece portion of the locking / unlocking portion 41 substantially at the upper side so as to maintain the locking / unlocking portion 41 in the locked state. It is set as the structure urged | biased in the direction which becomes.

The posture maintaining member 19 may be configured to provide a feeling of moderation (click feeling) when operating the locking / unlocking portion 41 operated to the unlocked state and the locked state.
Further, instead of a mode in which insertion holes through which the lock projections 11d and 44 of the lock case 11 and the locking / unlocking portion 41 are inserted are provided at both arm ends of the posture maintaining member 19, both arm ends of the posture maintaining member 19 are provided. It is good also as an aspect which provided the connection protrusion which protrudes in a door thickness direction. In this case, it is good also as a structure which provided the insertion recessed part, the insertion hole, etc. in the lock cases 11 and 21 and the locking / unlocking part 41. FIG. Further, the posture maintaining member 19 is not limited to the torsion coil spring, but may be composed of other spring members such as a leaf spring, or other members that are not limited to the spring member and are elastically deformable.

The lock piece 45 has a configuration in which a connecting shaft portion 46 as a connecting portion with the locking / unlocking portion 41 is provided on the upper end side. The connecting shaft portion 46 is provided so as to protrude toward one side in the door thickness direction. Further, a protruding protrusion 46a that protrudes in the radial direction and that can be inserted into the narrow groove 43a of the bearing hole 43 of the locking / unlocking portion 41 is provided at the distal end portion of the connecting shaft portion 46 in the protruding direction. . If the retaining protrusion 46a is aligned with the narrow groove 43a, the connecting shaft portion 46 can be inserted into the bearing hole 43. Further, the connecting shaft portion 46 is inserted into the bearing hole 43 so that the tip portion is exposed to one side of the bearing hole 43 in the door thickness direction, and the locking projection 46a is locked around the connecting shaft portion 46 so as not to be aligned with the narrow groove 43a. If the piece part 45 and the locking / unlocking part 41 are rotated relatively, the retaining protrusion 46a prevents the retaining part 46 from being removed. That is, the retaining protrusion 46 a is locked to the hole edge other than the portion where the narrow groove 43 a of the bearing hole 43 of the locking / unlocking portion 41 is provided, and the connection shaft portion 46 moves relative to the bearing hole 43 to the other side in the door thickness direction. Deterred.

Further, in the state where the locking projection 46a is secured as described above, the surface facing the door thickness direction one side around the connecting shaft portion 46 at the upper end portion of the locking piece portion 45, and the lock holding piece portion of the locking / unlocking portion 41 It is set as the structure which contact | abuts or adjoins the surface which faces the other side of the door thickness direction. With such a configuration, the upper end portion of the lock piece portion 45 and the lock holding piece portion of the locking / unlocking portion 41 are rotatably connected in a state where movement in the door thickness direction is suppressed.
Further, the retaining protrusion 46a of the connecting shaft portion 46 of the lock piece 45 and the narrow groove 43a of the bearing hole 43 of the locking / unlocking portion 41 are located when the locking mechanism 40 is displaced between the unlocked state and the locked state. , So as not to be aligned when viewed in the door thickness direction (see FIGS. 1A and 3A).
Further, the dimension along the door thickness direction from the front end surface which is one side surface in the door thickness direction of the connecting shaft portion 46 of the lock piece portion 45 to the other side surface in the door thickness direction of the upper end portion of the lock piece portion 45 is the lock case 11, 21. It is set as the dimension according to the dimension between the both inner surfaces which face the door thickness direction of the base board parts 12 and 22.

Further, in the present embodiment, the engagement protrusions 47 that protrude outward in the door thickness direction are provided on both sides of the lock piece 45 in the door thickness direction. Further, the engagement protrusions 47 are provided on both sides in the door thickness direction at the substantially central portion in the door width direction at the lower end of the lock piece 45. Moreover, these engagement protrusions 47 and 47 are provided so that it may become a position which mutually overlaps in the door thickness direction, and it is made into substantially cylindrical shape seeing in the door thickness direction. The dimension along the door thickness direction of the lower part of the lock piece portion 45 including the periphery of the engagement protrusions 47 and 47 is between the inner surfaces of the base plate portions 12 and 22 of the lock cases 11 and 21 facing the door thickness direction. The dimensions are in accordance with the dimensions. The lock cases 11 and 21 are provided with guide grooves 13 and 23 for receiving the engaging protrusions 47 and 47 of the lock piece 45 and guiding the lock piece 45 displaced in the vertical direction. In this embodiment, the guide grooves 13 and 23 of the lock cases 11 and 21 are moved to the inner walls 18 and 28 of the inner side walls 18 and 28 of the engagement protrusions 47 and 47 of the lock piece 45 in the locked state. The receiving grooves 13a and 23a to be allowed are provided in a series.

These guide grooves 13 and 23 are provided so as to pass through the base plate portions 12 and 22 of the lock cases 11 and 21 in the thickness direction and overlap each other when viewed in the door thickness direction. . The engagement protrusions 47, 47 of the lock piece 45 are inserted into guide grooves 13, 23 formed so as to penetrate the base plate portions 12, 22 in the thickness direction, and the door thickness direction of the lock cases 11, 21 is inserted. It is configured to be exposed on both sides. The projecting dimensions of the engaging projections 47 and 47 may be appropriate dimensions so as not to project significantly from both sides of the lock cases 11 and 21 in the door thickness direction. In the example shown in the figure, the protruding dimensions of the engaging protrusions 47 and 47 are set such that the engaging protrusions 47 and 47 slightly protrude from both sides of the lock case 11 and 21 in the door thickness direction. It is not restricted to such an aspect.
The guide grooves 13 and 23 are provided to extend in the vertical direction so as to guide the engagement protrusions 47 and 47 of the lock piece 45 in the vertical direction. The groove widths of these guide grooves 13 and 23 (dimensions along the door width direction other than the portions where the receiving grooves 13a and 23a are provided) are dimensions corresponding to the diameters of the engagement protrusions 47 and 47 of the lock piece 45. ing.

Further, the dimensions along the vertical direction of the guide grooves 13 and 23 are as follows. As shown in FIGS. 1 (a) and 3 (a), the lock piece portion that moves vertically between the unlocked state and the locked state. It is good also as an appropriate dimension so that 45 guides are possible. In the illustrated example, the guide grooves 13 and 23 are provided such that their upper ends are at the same height as the engagement protrusions 47 and 47 of the lock piece 45 in the unlocked state (upward position). ing. Moreover, the example which provided these guide grooves 13 and 23 so that these lower ends may become the same height as the engagement protrusions 47 and 47 of the lock piece part 45 made into the locked state (downward position) is shown.
Further, the receiving grooves 13a and 23a of the guide grooves 13 and 23 are provided so as to be positioned at the same height as the engaging protrusions 47 and 47 of the lock piece portion 45 in the locked state (downward position). (See FIG. 3 (a)). That is, the receiving grooves 13a and 23a are provided in a series at the lower ends of the guide grooves 13 and 23. In the present embodiment, the receiving grooves 13a and 23a of the guide grooves 13 and 23 are configured so as to be substantially coincident with the axis of the latch member 30 in the vertical direction. The receiving grooves 13a and 23a of the guide grooves 13 and 23 are provided so as to be substantially coincident with the protrusions 18a and 28a of the inner walls 18 and 28 in the vertical direction.

Further, the receiving grooves 13a and 23a are provided so as to extend the lower end portions of the guide grooves 13 and 23 to the suspension side. These receiving grooves 13a and 23a are provided at the lower ends of the guide grooves 13 and 23 so as to open toward the door end side. Further, these receiving grooves 13a and 23a have a groove width dimension along the vertical direction so that the engaging protrusions 47 and 47 of the lock piece 45 can be received so that the engaging protrusions 47 and 47 of the lock piece 45 can be received. It is the size according to. The extension dimension of the receiving grooves 13a and 23a toward the suspension base is such that the engagement protrusions 47 and 47 are damaged when an external force is applied to the lock piece 45 in the locked state against the inner walls 18 and 28. It is good also as an appropriate dimension from a viewpoint etc. which suppress etc. In addition, it replaces with the aspect which provided the guide grooves 13 and 23 including the receiving grooves 13a and 23a so that each base plate part 12 and 22 might be penetrated in the thickness direction, and the inner surface which each base plate part 12 and 22 mutually faces It is good also as a structure provided in the side of the concave groove.

With the above-described configuration, the lock piece 45 has an upper end that draws an arc around the locking / unlocking coupling portions 42 and 42 as the lock holding piece portion of the locking / unlocking portion 41 is rotated with the rotation of the locking / unlocking portion 41 described above. The engagement protrusions 47, 47 on the lower end side are guided along the guide grooves 13, 23 and displaced up and down while being displaced (oscillated). Moreover, if it is set as a locked state, as shown in FIG. 3, the surface which faces the door-end side of the lock piece part 45 will be in the surface which faces the suspension origin side of the engaged part 32 of the latch member 30 made into the protrusion state. Abut or face each other in close proximity. Further, in this locked state, the portion of the lock piece 45 that faces the inner walls 18 and 28 on the back face and the inner walls 18 and 28 on the back face each other in close contact with each other. As a result, the movement of the latch member 30 in the retracting direction (hanging base side), that is, the operation of the handles 6 and 6 toward the opening side is suppressed, and the locked state is obtained.
In the illustrated example, the entire surface of the lock piece portion 45 facing the door end side is a flat surface that is substantially parallel to the surface of the latch member 30 facing the suspension base side of the engaged portion 32 in the locked state. An example is shown. Further, the entire inner surface 18 of the lock piece 45 facing the suspending side (the surface excluding the portion provided with the projecting piece portions 48, 48 to be described later), the inner wall 18, 28 shows an example of a flat surface that is substantially parallel to 28 (see FIG. 1A).

Further, in the present embodiment, as shown in FIG. 3, the protrusions 18a and 28a of the lock cases 11 and 21 are prevented from moving in the door thickness direction in the lock piece 45 in the locked state. The receiving recess 49 for receiving the portions 18a and 28a is provided. Further, the depth dimension D2 along the door width direction of the receiving recess 49 of the lock piece 45 is made larger than the projecting dimension D1 of the protrusions 18a and 28a of the lock cases 11 and 21. That is, the depth dimension D2 of the receiving recess 49 so that the tip surfaces of the protrusions 18a and 28a do not contact the bottom surface of the locking recess 45 in the locked state facing the suspension base of the receiving recess 49. Is larger than the protrusion dimension D1 of the protrusions 18a and 28a of the lock cases 11 and 21.

Moreover, in this embodiment, it is set as the structure which provided the receiving recess 49 in the lower end part of the lock piece part 45 so that it might open to the suspension base side and an up-down direction both sides. Further, the projecting piece portions 48 are provided at the lower end portion of the lock piece portion 45 so as to partition both sides of the receiving recess 49 in the door thickness direction. That is, the projecting dimension along the door width direction of these projecting piece portions 48 and 48 is the depth dimension D2 of the receiving recess 49, and the projecting dimension (D2) of these projecting piece portions 48 and 48 is the same as that of the lock cases 11 and 21. The protrusions 18a and 28a are larger than the protrusion dimension D1.
These projecting piece portions 48, 48 are provided at intervals in the door thickness direction so as to protrude from the lower end portion of the lock piece portion 45 toward the suspension base and to form a receiving recess 49. Yes. Further, when the lock piece 45 is in the locked state, the protrusions 48, 48 are engagement recesses provided on the base plate parts 12, 22 side of the protrusions 18a, 28a of the cases 11, 21 described above. It is set as the structure inserted so that it may each fit in a place. That is, when the lock piece 45 is locked, the protrusions 48 and 48 prevent the protrusions 18a and 28a of the lock cases 11 and 21 from moving outward in the door thickness direction, which is the direction away from each other. .

Moreover, the opposing surfaces facing each other in the door thickness direction of these projecting pieces 48, 48, that is, the inner surfaces on both sides in the door thickness direction of the receiving recess 49 are flat surfaces substantially parallel to both sides in the door thickness direction of the door body 2. Has been. Further, the surfaces of the projecting pieces 48, 48 facing outward in the door thickness direction are provided in a series on both sides in the door thickness direction of the lower portion of the lock piece 45. Moreover, the width dimension along the door thickness direction of these protrusions 48 and 48 is made into the substantially same dimension as each other, and is substantially the same dimension as the width dimension along the door thickness direction of the engaging recess of the lock cases 11 and 21 described above. It is said that.
Further, the front end surfaces 48a, 48a in the projecting direction of the projecting piece portions 48, 48 are flat surfaces that are substantially parallel to the door side surface of the front cover 20 when the lock piece portion 45 is locked. When the lock piece 45 is locked, the tip surfaces 48a and 48a of the projecting pieces 48 and 48 come into contact with the inner walls 18 and 28 on the back side constituting the bottom surfaces of the engagement recesses of the cases 11 and 21, respectively. Or face up close. In the illustrated example, a chamfered portion is provided at the upper end portion of the tip surfaces 48a, 48a of the projecting piece portions 48, 48 so that the lock piece portion 45 is in a locked state and faces obliquely upward on the hanging side.

Further, the surface facing the suspending side between the projecting pieces 48, 48 at the lower end of the lock piece 45, which becomes the concave bottom surface of the receiving recess 49, is the door of the front cover 20 when the lock piece 45 is locked. It is a flat surface that is substantially parallel to the front side surface. That is, the concave bottom surface of the receiving recess 49 and the front end surfaces of the protrusions 18a and 28a of the lock cases 11 and 21 are configured to be substantially parallel to each other and face each other when the lock piece 45 is locked. ing. The depth D2 of the receiving recess 49 and the protruding dimension D1 of the protrusions 18a and 28a of the lock cases 11 and 21 are formed on the bottom surface of the receiving recess 49 of the lock piece 45 in the locked state. , 28a may be appropriately dimensioned so that the front end surfaces do not come into contact with each other.

Moreover, in this embodiment, the site | part 48a, 48a and the back side inner walls 18 and 28 which face the back side inner walls 18 and 28 in the lock piece part 45 are made into the lock piece part 45 made into the locked state, and the back side inner wall 18 is. When the external force pressing to the 28 side is applied, the lock pieces 45 are brought into contact with each other so as to suppress the downward movement. In this embodiment, the front end surfaces 48a and 48a of the projecting pieces 48 and 48 of the lock piece 45 and the inner walls 18 and 28 constituting the bottom surface of the engaging recess are the parts facing each other. Further, the front end surfaces 48a, 48a of the projecting piece portions 48, 48 of the lock piece portion 45 and the inner inner walls 18, 28 with which they abut are substantially parallel to the door end side surface of the front cover 20 in the locked state. It has a flat surface shape. Thereby, when the external force which presses to the back side inner walls 18 and 28 side acts on the lock piece part 45 made into the locked state, it is mutually contact | abutted so that the movement to the downward side of the lock piece part 45 may be suppressed. It is said.

That is, the front end surfaces 48a, 48a of the projecting piece portions 48, 48 of the lock piece portion 45 are inclined surfaces that face obliquely upward on the suspending side when the lock piece portion 45 is locked, or the inner walls 18 and 28 on the back side are formed. If an inclined surface facing diagonally downward on the door end side is used, when an external force is applied to the lock piece portion 45 in the locked state against the inner walls 18, 28, the lock piece portion 45 is pushed down. A component force will be generated. According to the above configuration, the reaction forces between the tip surfaces 48a, 48a of the projecting pieces 48, 48 of the lock piece 45 that are in contact with each other and the inner walls 18, 28 in the back are in the door width direction (horizontal direction). Therefore, the downward movement of the lock piece 45 is suppressed. In addition, it replaces with the above aspects, and makes the front end surface 48a, 48a of the protrusion piece parts 48, 48 of the lock piece part 45 into the inclined surface which faces the slanting lower side of the suspension base side when the lock piece part 45 is locked. Alternatively, the rear inner walls 18 and 28 may be inclined surfaces facing obliquely upward on the door end side.

As shown in FIGS. 5B and 6B, the fall prevention wall 29 of the lock cases 11 and 21 is provided so as to suppress the downward movement of the locking / unlocking portion 41 in this embodiment. ing. Further, as shown in FIGS. 1 (a) and 3 (a), the fall prevention wall 29 is located on the lower side of the spring connecting piece portion of the unlocked / unlocked portion 41 in the unlocked state, and is in the locked state. It is set as the structure provided so that it might be located below the lock holding piece part of the locking / unlocking part 41 made. The fall prevention wall 29 is provided so as not to interfere with the locking / unlocking portion 41 and the locking piece 45 that are in the unlocked state and the locked state. Further, the fall prevention wall 29 is provided so that the movement of the latch member 30 in the retracting direction is not inhibited by the lock piece portion 45 that is moved downward as the locking / unlocking portion 41 is moved unintentionally downward. It has been. When the lock case 11 and 21 are released from the lock mechanism 40 in the unlocked state and the lock mechanism 40 is moved downward, the lock piece 45 is not locked. It is good also as what was set as the structure which supports the locking / unlocking part 41. Further, when the holding of the lock cases 11 and 21 with respect to the lock mechanism 40 in the locked state is released and the lock mechanism 40 moves downward, the fall prevention wall 29 does not move until it becomes impossible to unlock. It is good also as what was set as the structure which supports the locking / unlocking part 41.

The fall prevention wall 29 is provided so as to protrude in the door thickness direction from both or one of the base plate portion 12 of the first case 11 and the base plate portion 22 of the second case 21. In the present embodiment, as shown in FIGS. 1, 4, and 5 (b), the base plate portion 22 of the second case 21 is not provided with a fall prevention wall on the base plate portion 12 side of the first case 11. In this configuration, a fall prevention wall 29 is provided. In addition, it is good also as an aspect which provided the fall prevention wall in the base plate part 12 of the 1st case 11 instead of or in addition to such an aspect.
In the example of the figure, the fall prevention wall 29 is shown as an example of a substantially rectangular shape that is long in the door width direction when viewed in the door thickness direction, but is not limited to such a mode. In addition, in the example of the drawing, an example is shown in which protrusions that protrude toward the suspension base side are provided on both upper and lower edges of the suspension base end of the fall prevention wall 29. I can't. Moreover, although the example which made this fall prevention wall 29 the substantially square cylinder shape is shown in the example of a figure, it is not restricted to such an aspect.

In addition, the dimension along the door thickness direction and the dimension along the door width direction of the fall prevention wall 29 supports the locking / unlocking portion 41 that moves downward as described above, and prevents further downward movement. It is good also as an appropriate dimension as possible.
The latch member 30, the hub member 34, the slide body 38, and the lock mechanism 40 described above may be made of resin, metal, or a combination of resin and metal. Further, the locking / unlocking portion 41 and the lock piece portion 45 of the lock mechanism 40 that are separated and rotatably connected as described above may each be a resin molded product.

The latch lock device 10 according to the present embodiment and the door device 1 having the same can be configured to have the above-described configuration, thereby suppressing malfunctions while reducing the number of parts.
In other words, the first case 11 and the second case 21 made of resin divided in the door thickness direction for holding the lock cases 11 and 21 so as to sandwich the lock mechanism 40 from both sides of the door thickness direction are engaged with each other and combined. The configuration is made. Therefore, compared with the case of using a metal lock case, a large number of fastening elements are not required, the first case 11 and the second case 21 can be combined, and the number of parts can be reduced. Weight reduction can be achieved. Moreover, since the lock mechanism 40 is provided, it can lock. Further, as described above, if the first case 11 and the second case 21 are assembled without using a fastening element, parts can be further saved. Instead of such a mode, the first case 11 and the second case 21 may be assembled using auxiliary fastening elements such as screws.

Further, in the present embodiment, when the first case 11 and the second case 21 are deformed so that the holding of the locking mechanism 40 is released, the fall prevention wall that suppresses the downward movement of the locking mechanism 40. 29 is provided in the lock cases 11 and 21. Accordingly, for example, the first case 11 and the second case 21 that hold the lock mechanism 40 when the excessive (abnormal) handles 6 and 6 are operated are deformed so as to spread in the door thickness direction, and the first case 11 and the second case 21 Even when the holding of the lock mechanism 40 by the two cases 21 is released, the downward movement of the lock mechanism 40 can be suppressed. Thereby, it can suppress that it becomes impossible to unlock and is locked up. That is, since the lock cases 11 and 21 are made of resin, the first case 11 and the second case 21 can be easily deformed so as to spread in the door thickness direction, compared to the case of using a metal lock case. Providing the fall prevention wall 29 can prevent unintentional locking and unlocking.
Further, if the locking / unlocking member 9 as described above is connected to the locking / unlocking connecting portions 42, 42 of the locking / unlocking portion 41, the lock mechanism 40 is difficult to move downward, but the lock cases 11, 21, etc. Even when the connection is released along with the deformation, the downward movement of the lock mechanism 40 can be suppressed. Further, for example, when the latch lock device 10 is incorporated in the door body 2 where the locking / unlocking member 9 is not provided, if the lock cases 11 and 21 are deformed, the holding of the lock mechanism 40 is more easily released. However, the downward movement of the lock mechanism 40 can be suppressed. That is, for example, even when the latch locking device 10 is a common component when incorporated in the door 2 having the locking function and when incorporated in the door 2 having no locking function, the lower side of the lock mechanism 40 is also provided. Can be deterred.

Further, in the present embodiment, the depth dimension D2 of the receiving recess 49 of the lock piece 45 that receives the protrusions 18a and 28a of the inner walls 18 and 28 on the back side of the first case 11 and the second case 21 in the locked state, The protrusions 18a and 28a are larger than the protrusion dimension D1. Therefore, the depth side wall portion of the first case 11 and the second case 21 is smaller than that in which the depth dimension D2 of the receiving recess 49 of the lock piece 45 is smaller than the protrusion dimension D1 of the protrusions 18a and 28a. The breakage and deformation of 17, 27 can be suppressed. Thereby, it can suppress that the suspension origin side site | part of the 1st case 11 and the 2nd case 21 spreads in a door thickness direction, and suppresses that the lock mechanism 40 hold | maintained at these stops functioning. can do. That is, when the depth dimension D2 of the receiving recess 49 of the lock piece 45 is smaller than the protrusion dimension D1 of the protrusions 18a and 28a, the handle 6 and 6 are excessively operated on the open side in the locked state. If it does, the concave bottom face of the receiving recess 49 will be pressed against each protrusion 18a, 28a. On the other hand, if it is set as the structure of this embodiment, if the handle | steering- wheels 6 and 6 are excessively operated by the open side in the locked state, the protrusion piece part of the door thickness direction both sides which divide the receiving recess 49 of the lock piece part 45 will be shown. 48 and 48 are pressed against the inner walls 18 and 28 on the inner side in the door thickness direction of the protrusions 18a and 28a. Thereby, compared with the structure by which the concave bottom face of the receiving recess 49 is pressed against each protrusion 18a, 28a, the suspension plate | board side edge part of the base board parts 12 and 22 which comprise the door thickness direction both sides of the lock cases 11 and 21 are provided. The load (moment) applied to can be reduced. As a result, it is possible to effectively suppress breakage or deformation of the suspension side end portions of the cases 11 and 21.

In the present embodiment, the engagement protrusions 47 of the lock piece 45 in the locked state are inserted into the guide grooves 13 and 23 of the cases 11 and 21 that receive the engagement protrusions 47 and 47 of the lock piece 45. The receiving grooves 13a and 23a that allow the movement of the 47 toward the inner walls 18 and 28 are provided in a series. Therefore, when the handle 6 and 6 are excessively operated on the open side in the locked state and an external force is applied to the lock piece 45 against the inner walls 18 and 28, the engaging projections 47 and 47 are received. It is received in the grooves 13a and 23a and can move to the inner walls 18 and 28 on the back side. Thereby, compared with the thing which does not provide such receiving grooves 13a and 23a, it is possible to reduce the load applied to the respective engaging projections 47 and 47 of the lock piece 45, and the engagement projections 47 and 47 can be reduced. Damage and deformation can be suppressed. Thereby, the malfunctioning of the lock piece part 45 displaced to an up-down direction can be suppressed. Note that the receiving grooves 13a and 23a may not be provided in the guide grooves 13 and 23.

Moreover, in this embodiment, the site | part (tip surface) 48a, 48a and the back side inner walls 18 and 28 which face the back side inner walls 18 and 28 in the lock piece part 45 are made into the lock piece part 45 made into the locked state. When an external force is applied to the inner walls 18 and 28 on the back side, the lock pieces 45 are in contact with each other so as to suppress the downward movement of the lock piece 45. Therefore, when an external force is applied to the lock piece 45 in the locked state against the inner walls 18, 28, a component force that moves the lock piece 45 downward due to the reaction force at the mutual contact portion is generated. Compared to those in contact with each other so as to be included, it is possible to suppress further downward movement of the lock piece 45. As a result, the connecting portions (43, 46) of the lock piece 45 and the locking / unlocking portion 41 that displaces the lock piece 45 in the vertical direction, the breakage of the holding portions 12b, 22b of the cases 11, 21 holding the lock mechanism 40, Deformation can be suppressed, and malfunction of the lock mechanism 40 can be suppressed. Instead of such a mode, the tip surfaces 48a, 48a of the projecting piece portions 48, 48 of the lock piece portion 45 may be inclined surfaces that face obliquely upward on the suspending side when the lock piece portion 45 is locked. The inner walls 18 and 28 on the back side may be inclined surfaces facing obliquely downward on the door end side.

In addition, the handles 6 and 6 may have such strength that the lock cases 11 and 21 are deformed before the handles 6 and 6 are excessively operated and the lock cases 11 and 21 are damaged or deformed. For example, the strength may be such that the connecting shaft 7 of one handle 6A is deformed before the handle 6 or 6 is excessively operated and the lock case 11 or 21 is damaged or deformed.
Further, in the present embodiment, the configuration in which the fall prevention wall 29 is provided and the configuration in which the depth dimension D2 of the receiving recess 49 of the lock piece 45 is larger than the projection dimension D1 of the projections 18a and 28a. Although adopted, only one of the configurations may be adopted.
In the present embodiment, the top wall portions 15 and 25 and the bottom wall portions 16 and 26 are provided in both the first case 11 and the second case 21. However, the present invention is not limited to such an embodiment. Absent. For example, the second case 21 may have a lid shape without providing the top wall portion 25 and the bottom wall portion 26 in the second case 21. In addition, the specific configurations of the lock cases 11 and 21, the latch member 30, the hub member 34, the lock mechanism 40, and the like incorporated in the lock cases 11 and 21 are not limited to the above-described aspects, and various other modifications are possible.

DESCRIPTION OF SYMBOLS 1 Door apparatus 2 Door body 3 Housing recess 10 Latch lock apparatus 11 1st case (lock case)
13 Guide Groove 13a Receiving Groove 18 Back Side Inner Wall 18a Protrusion 21 Second Case (Lock Case)
23 Guide groove 23a Receiving groove 28 Inner side wall 28a Projection 29 Fall prevention wall 30 Latch member 31 Latch head (one end in the door width direction)
32 engaged part (the other end in the door width direction)
40 Lock mechanism 45 Lock piece portion 47 Engagement protrusion 48a Tip surface (portion facing the inner wall on the back side of the lock piece portion)
49 Receiving recess D1 Protrusion dimension (protrusion dimension along the door width direction of the protrusion)
D2 Depth dimension (depth dimension along the door width direction of the receiving recess of the lock piece)

Claims (5)

1. The lock case incorporated in the door body is displaceable in the door width direction and the latch member in which one end of the door width direction protrudes and retracts, and in the locked state, the latch member that is in the protruding state moves in the immersion direction. A latch locking device provided with a locking mechanism for inhibiting,
   The locking mechanism is freely displaceable in the vertical direction between the other end portion of the latch member in the projecting state in the door width direction and the inner wall on the back side facing the door end side of the lock case facing the other end portion. It is configured that the lock piece portion that is moved to the lower side is arranged and is in the locked state,
   The lock case has a structure in which a first case made of resin and a second case divided in the door thickness direction that hold the lock mechanism so as to be sandwiched from both sides of the door thickness direction are engaged and combined with each other. And the fall prevention wall which suppresses the movement to the downward side of this lock mechanism when these 1st cases and 2nd cases deform | transform so that holding | maintenance of the said lock mechanism may be provided is provided. Latch lock device.
2. The lock case incorporated in the door body is displaceable in the door width direction and the latch member in which one end of the door width direction protrudes and retracts, and in the locked state, the latch member that is in the protruding state moves in the immersion direction. A latch locking device provided with a locking mechanism for inhibiting,
   The locking mechanism is freely displaceable in the vertical direction between the other end portion of the latch member in the projecting state in the door width direction and the inner wall on the back side facing the door end side of the lock case facing the other end portion. It is configured that the lock piece portion that is moved to the lower side is arranged and is in the locked state,
   The lock case has a structure in which a first case made of resin and a second case divided in the door thickness direction that hold the lock mechanism so as to be sandwiched from both sides of the door thickness direction are engaged and combined with each other. And it is set as the structure which each provided the protrusion which protrudes toward the door-end side in the back side inner wall where the other end part of the latch member in these 1st cases and 2nd cases opposes,
   The lock piece is provided with a receiving recess for receiving the protrusions in the locked state so as to suppress movement of the protrusions of the first case and the second case in the door thickness direction, The depth dimension along the door width direction of the receiving recess of the lock piece is larger than the projecting dimension along the door width direction of the protrusion of the first case and the second case. Latch lock device.
3. In claim 1 or 2,
   Engagement protrusions projecting outward in the door thickness direction are provided on both sides of the lock piece part in the door thickness direction, and the engagement protrusions of the lock piece part are provided on the first case and the second case, respectively. A guide groove for receiving and guiding the locking piece that is displaced in the vertical direction is provided;
   The guide grooves of the first case and the second case are provided with a series of receiving grooves that allow the engagement protrusions of the lock piece portion in the locked state to move toward the inner wall side. A latch lock device characterized by comprising:
4. In any one of Claims 1 thru | or 3,
   The portion of the lock piece that faces the inner wall on the back side and the inner wall on the back side, when an external force that presses against the inner wall side of the back acts on the lock piece that is locked. A latch lock device characterized by being configured to contact each other so as to suppress the downward movement of the portion.
5. A latch lock device according to any one of claims 1 to 4, and a door body in which an accommodation recess into which the latch lock device is incorporated is provided at a door end side end. Door device to do.

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