Door locking device

Abstract

To provide a door locking device which enables easy and quick locking and unlocking of a door. [Solution] The door locking device of this invention is for locking and unlocking a door consisting of a first door 31 with an engagement hole or engagement recess and a second door 32 with an engagement hole or engagement recess, and is composed entirely of a locking device main body 2 made of a long rod-shaped member, and the locking device main body 2 is freely rotatable around a spindle 8 inserted through its center as a fulcrum, and has a locking portion at one end in the longitudinal direction that is configured to be able to engage with the engagement hole or engagement recess, and a locking portion at the other end that is configured to be able to engage with the matching hole or engagement recess, and the engagement hole or engagement recess has a specific configuration.

Description

Technical Field

[0001] This invention relates to a door lock device. More specifically, it relates to a door lock device that enables easy and quick locking and unlocking of a door, particularly a pair of doors arranged side by side in a predetermined direction.

Background Art

[0002] Conventionally, as a method for transporting granular materials such as wood pellets, there is a method using a bulk container that utilizes a box-shaped container. Some of these bulk containers are equipped with a door (opening / closing door) or a hatch on their upper wall or ceiling.

[0003] For example, in Utility Model Registration No. 3129196 (Patent Document 1), a container for transporting bulk granular materials that can prevent condensation inside the outer plate of the container has been proposed.

[0004] This container for transporting bulk granular materials is a box-shaped container having corner fittings at the upper and lower four corners, The container has a ceiling hatch for loading on the ceiling part, and also has an end inlet at the upper part of the rear end face of the container, The lower part of the rear end face of the container has a rear discharge port for unloading, Granular materials can be loaded and transported through the ceiling hatch or the rear inlet, and the container has a heat-insulating structure for the six faces that make it up.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the container for bulk transportation of powders and granules described in Patent Document 1, in order to lock and unlock the ceiling hatch 30, an operator has to climb onto the ceiling and operate a locking device or locking means provided on the ceiling hatch 30. Therefore, considering the safety of operators, especially those working in a poor working environment such as a place where dust generated from powders and granules scatters, further improvement is required in easily and quickly locking and unlocking the opening / closing door or hatch.

[0007] In view of this situation, the present invention aims to provide a door locking device that enables easy and quick locking and unlocking of the door.

Means for Solving the Problems

[0008] The invention according to claim 1 of the present invention is a door locking device for locking and unlocking the closing of a door that opens and closes in a predetermined direction, the door is composed of a first door and a second door, the first door and the second door are configured to swing or move in a direction in which the end portions on the leading edge side of each other approach or separate from each other, the first door is provided with a first engaging portion at the end portion on its leading edge side, the second door is provided with a second engaging portion at the end portion on its leading edge side, the door locking device is composed of a locking device body made of an elongated bar-shaped member, the locking device body has a support shaft insertion hole for inserting a support shaft at its central portion, and is rotatable about the support shaft inserted through the support shaft insertion hole. It has a first locking portion configured to be engageable with the first engaging portion at one end side in the longitudinal direction, and a second locking portion configured to be engageable with the second engaging portion at the other end side. Both the first engaging portion and the second engaging portion are each composed of an engaging hole formed to penetrate from the outside to the inside or an engaging recess formed to be recessed from the outside to the inside. In a top view, the center of each of the engaging hole or the engaging recess is offset from the axis of the lock device main body in a state where the first door and the second door are locked, toward the rotation direction side where the engagement of the locking portion of the lock device main body is released. Also, in a top view, one of the engaging holes or the engaging recesses extends longer than the other engaging hole or the engaging recess by a required length toward the rotation direction side where the engagement of the first engaging portion and the second locking portion of the lock device main body is released. A door lock device characterized by the above.

[0009] The invention according to claim 2 of this invention is In the door lock device according to claim 1, The lock device main body is By being formed such that the diameter of the support shaft insertion hole is larger than the outer diameter of the support shaft, both ends in the longitudinal direction thereof are configured to be swingable in a direction parallel to the axis direction of the support shaft. It is characterized by the above.

[0010] The invention according to claim 3 of this invention is In the door lock device according to claim 2, On the outer periphery of the support shaft, with the support shaft inserted into the support shaft insertion hole, an annular member extending in a direction orthogonal to the axis direction of the support shaft is mounted with a required interval from the upper opening edge of the support shaft insertion hole. As a result, both ends in the longitudinal direction of the lock device main body are configured to swing within a predetermined range along a direction parallel to the axis direction of the support shaft. It is characterized by the above.

[0011] The invention according to claim 4 of this invention is In the door lock device according to claim 1 or 2, Both the first locking portion and the second locking portion are It is configured by rotators rotatably connected to both longitudinal ends of the lock device body respectively. It is characterized by the above.

[0012] The invention according to claim 5 of this invention is In the door lock device according to claim 1 or 2, The first door and the second door Are arranged side by side with a predetermined interval therebetween, The lock device body Is disposed between the first door and the second door. It is characterized by the above.

[0013] The invention according to claim 6 of this invention is In the door lock device according to claim 5, The first engaging portion Is formed on a first flange portion extending from the edge of the leading end side of the first door toward the second door, The second engaging portion Is formed on a second flange portion extending from the edge of the leading end side of the second door toward the first door. It is characterized by the above.

[0014] The invention according to claim 7 of this invention is In the door lock device according to claim 6, The first flange portion Is extended from the edge of the leading end side of the first door so as to be located at a required height from the wall surface, and is provided with a first inclined portion formed to incline downward in the rotation direction in which the engagement of the first locking portion of the lock device body is released from the edge of the first flange portion. The second flange portion Is extended from the edge of the leading end side of the second door so as to be located at a required height from the wall surface, and is provided with a second inclined portion formed to incline downward in the rotation direction in which the engagement of the second locking portion of the lock device body is released from the edge of the second flange portion. It is characterized by the above.

[0015] The invention according to claim 8 of the present invention is In the door locking device according to claim 1 or 2, The first door and the second door are configured to swing in a direction in which the end portions on the leading edge sides of each other approach or separate from each other and is characterized by this.

Effect of the Invention

[0016] The door locking device according to the present invention locks and unlocks the closing of a door that opens and closes in a predetermined direction, and the door is composed of a first door and a second door, and the first door and the second door are configured to swing or move in a direction in which the end portions on the leading edge sides of each other approach or separate from each other. The first door is configured to include a first engaging portion at the end portion on its leading edge side, and the second door is configured to include a second engaging portion at the end portion on its leading edge side. The door locking device is composed of a locking device body entirely made of a long bar-shaped member. The locking device body has a support shaft insertion hole for inserting a support shaft at its central portion, and is rotatable about the support shaft inserted into the support shaft insertion hole. It has a first locking portion configured to be engageable with the first engaging portion on one end side in the longitudinal direction, and a second locking portion configured to be engageable with the second engaging portion on the other end side. The first engaging portion and the second engaging portion are both composed of an engaging hole formed to penetrate from the outside to the inside or an engaging concave portion formed to be recessed from the outside to the inside. The engaging hole or the engaging concave portion is formed such that, in a top view, its center is biased toward the rotation direction side where the engagement between the first engaging portion and the second locking portion of the locking device body is released from the axis of the locking device body in a state where the closing of the first door and the second door is locked. At the same time, one of the engaging holes or the engaging concave portions is formed to extend longer than the other engaging hole or the engaging concave portion by a required length toward the rotation direction side where the engagement of the locking portion of the locking device body is released in a top view. Therefore, according to this door lock device (or door lock mechanism), the lock device main body constituting the door lock device can lock and unlock the closing of the door (or hatch) by performing a single operation, specifically, only by rotating in a predetermined direction. Thus, this door lock device enables easy and prompt locking and unlocking of the closing of the door.

[0017] In the door lock device, by forming the diameter of the support shaft insertion hole of the lock device main body to be larger than the outer diameter of the support shaft, the lock device main body can be configured to be swingable in a direction parallel to the axial direction of the support shaft at both ends in its longitudinal direction. With such a configuration, it becomes possible to lock and unlock the closing of the first door and the second door more smoothly and reliably.

[0018] In the door lock device, the first locking portion and the second locking portion can be configured by rotatable bodies rotatably connected to both end edges in the longitudinal direction of the lock device main body respectively. With such a configuration, it becomes possible to lock and unlock the closing of the first door and the second door more smoothly and reliably.

[0019] Furthermore, in the door lock device, the first engaging portion can be formed on a first flange portion extending from the edge on the door tip side of the first door toward the second door, and the second engaging portion can be formed on a second flange portion extending from the edge on the door tip side of the second door toward the first door. At that time, the first flange portion is extended from the edge on the door tip side of the first door so as to be located at a required height from the wall surface. The first flange portion is provided with a first inclined portion formed to incline downward in the rotation direction in which the engagement of the first locking portion of the lock device main body is released from its edge. The second flange portion is extended from the edge on the door tip side of the second door so as to be located at a required height from the wall surface. The second flange portion can be provided with a second inclined portion formed to incline downward in the rotation direction in which the engagement of the second locking portion of the lock device main body is released from its edge. With such a configuration, it becomes possible to lock and unlock the closing of the first door and the second door more smoothly and reliably.

[0020] In addition, the first door and the second door can be configured to swing in a direction in which the end portions on the door tip sides of each other approach or separate. That is, the first door and the second door may constitute a pair of hinged rotating doors, and the door lock device can be used as a lock device for locking the closing of such doors.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0022] Hereinafter, an example of the implementation of the door lock device according to the present invention will be specifically described based on the attached drawings. Note that the present invention is not limited only to the disclosed embodiments, and various improvements can be made within the range without changing the gist thereof.

[0023] In the present invention, the description of "○○ or more and ×× or less" or "○○ to ××" representing a numerical range means a numerical range including the lower limit and the upper limit which are the endpoints, unless otherwise specified. When the numerical ranges are described stepwise, the upper limit and the lower limit of each numerical range can be arbitrarily combined.

[0024] Also, in this specification and the drawings, terms indicating directions such as up and down, front and back, left and right are set for the convenience of explaining this embodiment, and up and down, front and back, left and right can be appropriately changed according to the state at that time.

[0025] FIG. 1 is a top view showing an embodiment of the door lock device 1 according to the present invention. In FIG. 1, two openings 11a and 11b are formed in the upper surface wall (ceiling wall) 11 of the container so as to be arranged at a predetermined interval in the front - rear direction. Although not particularly shown, the container is configured to be formed in an elongated box shape by an upper surface wall, a pair of side walls on the longitudinal side, a side wall on the front - wife side, and a bottom wall.

[0026] In FIG. 1, a first door 31 is attached to the upper surface wall 11 such that the front opening (first opening) 11a of the openings 11a and 11b can be opened and closed, and a second door 32 is attached to the upper surface wall 11 such that the rear opening (second opening) 11b can be opened and closed. In this embodiment, both the first door 31 and the second door 32 are made of metal from the viewpoint of maintaining strength during use. However, there is no particular limitation on the material as long as it has a strength that does not cause damage during use.

[0027] In FIG. 1, the first door 31 and the second door 32 are configured to have a substantially rectangular shape in plan view with a required size according to the shape and size of the openings 11a and 11b. There is no particular limitation on the shape and size of the first door and the second door, and they can be appropriately selected according to the size and shape of the opening.

[0028] FIG. 2 is an enlarged top view of the doors 31 and 32 and the door lock device 1 shown in FIG. 1. In FIG. 2, both the first door 31 and the second door 32 constitute hinged swing doors. Specifically, the front end of the first door 31 is pivotally supported by hinges 31a and 31a so as to be opened and closed in the front-rear direction, and the rear end (the end on the door tip side) 31b is a free end (the end opposite to the end having the hinge; the end on the swing tip side), constituting a door (opening / closing door or hatch) that can be folded forward. On the other hand, the rear end of the second door 32 is pivotally supported by hinges 32a and 32a so as to be opened and closed in the front-rear direction, and the front end (the end on the door tip side) 32b is a free end, constituting a door (opening / closing door or hatch) that can be folded backward. The first door 31 and the second door 32 can be understood as constituting a so-called butterfly-type door (door device) 3 apparently. Therefore, as shown in Fig. 2, when the openings 11a and 11b are closed, the free ends of the first door 31 and the second door 32 face each other. By rotating (swinging) the free ends of the first door 31 and the second door 32 away from each other, the openings 11a and 11b are opened. On the other hand, by rotating (swinging) them in the approaching direction, the openings 11a and 11b are closed. In Fig. 2, reference numerals 31c, 31d, 32c, and 32d are all handles that can be used when opening and closing the doors 31 and 32.

[0029] In this embodiment, both the first door 31 and the second door 32 are hinged rotary doors. However, as long as the openings 11a and 11b are configured to be closed when the ends on the door tip sides of the two doors approach each other by moving or swinging (rotating) in the approaching direction, and to be opened when they move or swing (rotate) in the separating direction, there is no particular limitation on the configuration. For example, the opening and closing movement of the first door 31 and the second door 32 may be a sliding movement (sliding type).

[0030] In the present invention, the first door 31 is provided with a first engaging portion 62 at its end 31b on the door tip side. Similarly, the second door 32 is provided with a second engaging portion 72 at its end 32b on the door tip side. The specific configurations of the first engaging portion 62 and the second engaging portion 72 will be described in detail later.

[0031] The door locking device 1 enables the first door 31 and the second door 32 to be locked so that they are not accidentally opened. In Figs. 1 and 2, it is disposed on the wall surface 11c between the first door 31 and the second door 32. Regarding the installation position of the door locking device 1, there is no particular limitation as long as the door locking device 1 is configured to be able to engage or disengage (engage and disengage) with the engaging portions 62 and 72 respectively disposed on the first door 31 and the second door 32 when it rotates.

[0032] FIG. 3 is an enlarged view of the main part (top view) of FIG. 2. As shown in FIG. 3, the door lock device 1 is composed of a long bar-shaped lock device body 2. In this embodiment, the lock device body 2 is made of metal from the viewpoint of maintaining strength during use. However, as long as it has a strength that does not cause damage during use, there is no particular limitation on its material.

[0033] In FIG. 3, the lock device body 2 is rotatably supported with the support shaft 8 projecting upward from the wall surface 11c via the support member 12 as a fulcrum. In FIG. 3, reference numeral 13 is a regulating member that abuts against the lock device body 2 constituting the door lock device 1 and regulates the rotation thereof within a predetermined range. It is composed of a plate-like body having a substantially L-shaped cross section.

[0034] FIG. 4 is a cross-sectional view. (A) is a cross-sectional view taken along the line A - A' of FIG. 2, and (B) is an enlarged view of the main part of (A). In FIG. 4, the support member 12 projects upward from the wall surface 11c, and the support shaft 8 projects upward from the support member 12. The lock device body 2 is provided with a support shaft insertion hole 2a through which the support shaft 8 for the rotation of the lock device body 2 is inserted at the central portion in its longitudinal direction. This support shaft insertion hole 2a is formed to penetrate in the vertical direction. Therefore, the lock device 1 is rotatable with the support shaft 8 inserted through the support shaft insertion hole 2a as a fulcrum.

[0035] Furthermore, the lock device body 2 is provided with a locking portion (first locking portion) 4 that engages with the first engaging portion 62 at one end side in its longitudinal direction (the left end portion in FIG. 4), and a locking portion (second locking portion) 5 that engages with the second engaging portion 72 at the other end side (the right end portion in FIG. 4).

[0036] With such a configuration, when the locking device 1 rotates in the counterclockwise direction (Q direction in FIGS. 2 and 3) in a top view, it engages with the first engaging portion 62 and the second engaging portion 72 provided on each of the first door 31 and the second door 32 to lock the closing of both doors 31 and 32. On the other hand, when the locking device 1 rotates in the clockwise direction (R direction in FIGS. 2 and 3) in a top view, it disengages from the first engaging portion 62 and the second engaging portion 72 to release the lock on the closing of both doors 31 and 32. Therefore, regarding the length of the locking device main body 2 in the longitudinal direction, there is no particular limitation as long as both ends in the longitudinal direction are configured to be engageable and disengageable with the engaging portions 62 and 72 provided on the doors 31 and 32 so that the locking or unlocking of the closing of the doors 31 and 32 can be performed.

[0037] FIG. 5 is an explanatory view of the first door 31 and the second door 32. In FIG. 5, the first door 31 is provided with a first engaging member 6 near the center in the direction orthogonal to the opening / closing direction (left - right direction in FIG. 5) of the end portion 31b on the leading - edge side of the door, and the second door 32 is provided with a second engaging member 7 at the end portion 32b on the leading - edge side of the door. In FIG. 5, the second engaging member 7 is disposed in a state biased toward the rotation direction side where the engagement of the locking portion of the locking device 1 with the first engaging member 6 is released.

[0038] In FIG. 5, the first engaging member 6 has a first flange portion 61 that extends from the leading - edge of the first door 31 toward the second door 32 (horizontally backward). In this first flange portion 61, an engaging hole (first engaging hole) formed by a through - hole is formed as the first engaging portion 62 so as to penetrate from the outside to the inside (in the vertical direction in this embodiment). The first engaging hole 62 is configured to be engageable or fitted with at least a part of the locking portion 4 provided on the locking device main body 2. In FIG. 5, it has a substantially rectangular shape that is long in the left - right direction in a top view. Similarly, the second engaging member 7 has a second flange portion 71 that extends from the edge of the second door 32 on the door tip side toward the first door 31 (horizontally forward), and an engaging hole (second engaging hole) formed as an engaging portion 72 in the form of a through hole that penetrates from the outside to the inside (vertically in this embodiment) in this second flange portion 71. The second engaging hole 72 is configured such that at least a part of the locking portion 5 provided in the lock device main body 2 can be engaged or fitted. In FIG. 5, it has a substantially rectangular shape that is long in the left-right direction in a top view.

[0039] Note that the engaging portion only needs to be configured to be able to engage with at least a part of the locking portion provided in the lock device main body 2, and it may be an engagement or a fitting. Also, in this embodiment, the engaging portions 62, 72 are configured as engaging holes formed by through holes penetrating in the vertical direction, but there is no particular limitation on the configuration as long as they are configured to be able to engage or fit with at least a part of the locking portions 4, 5 provided in the lock device main body 2. For example, the engaging portions 62, 72 may be configured as engaging or fitting concave portions formed to be recessed from the outside to the inside (downward) with a required depth and size. Even in that case, the engaging or fitting concave portions can be configured based on the description of the engaging holes.

[0040] Preferably, the centers P1, P2 of the engaging holes 62, 72 are formed at positions biased toward the rotation direction side where the engagement of the locking portions (first locking portion 4 and second locking portion 5) of the lock device main body 2 is released from the axis О of the lock device main body 2 in the closed state of the doors 31, 32 in the doors 31, 32. The center can be obtained by a known method. In addition, in Fig. 5, for the engaging hole 62, its center P1 is, on the door 31, on the side of the axis О of the lock device main body 2 when the closing of the doors 31 and 32 is locked, on the side in the rotation direction (left direction in Fig. 5) in which the engagement of the locking portion of the lock device main body 2 is released. For the engaging hole 72, its center P2 is, on the door 32, on the side of the axis О of the lock device main body 2 when the closing of the doors 31 and 32 is locked, on the side in the rotation direction (right direction in Fig. 5) in which the engagement of the locking portion of the lock device main body 2 is released, and they are formed at positions separated by about 1 mm or more and 2 mm or less respectively.

[0041] More preferably, among the engaging holes 62 and 72, one of the engaging holes is formed so as to extend longer than the other engaging hole by a required length in the rotation direction in which the engagement of the locking portion (the first locking portion 4 and the second locking portion 5) of the lock device main body 2 is released when viewed from above. In Fig. 5, both the engaging holes 62 and 72 have a substantially rectangular shape that is long in the left-right direction when viewed from above. However, one of the engaging holes (the engaging hole 72 in Fig. 5) is formed so as to extend longer by a length L than the other engaging hole (the engaging hole 62 in Fig.  5) in the rotation direction (right direction in Fig. 5) in which the engagement of the locking portion of the lock device main body 2 is released. Therefore, when the door lock device 1 is rotated, the locking portions (4, 5) at both longitudinal ends of the door lock device 1 do not engage with both the engaging holes (62, 72) at the same time. Instead, one of the locking portions (the locking portion 5 in this embodiment) first engages with one of the engaging portions (the engaging hole 72 in Fig. 5), and then the other locking portion (the locking portion 4 in this embodiment) engages with the other engaging portion (the engaging hole 62 in Fig. 5). As a result, it becomes possible to lock and unlock the closing of the doors (the first door and the second door) more smoothly and reliably. Regarding the length L, it can be appropriately selected according to the form and size of the locking portion, and there is no particular limitation. For example, it can be about 1 mm or more and 2 mm or less.

[0042] Regarding the engagement method between the locking portion 4 on one longitudinal end side of the lock device main body 2 and the engaging portion 62 provided on the first door 31, and the engagement method between the locking portion 5 on the other longitudinal end side of the lock device main body 2 and the engaging portion 72 provided on the second door 32, there are no particular restrictions, and known engagement means or engagement methods may be used.

[0043] In this embodiment, as shown in FIG. 4(A), the lock device main body 2 is configured to include a rotating body (roller) 41 as the locking portion 4 at the edge on one longitudinal end side thereof, and a rotating body (roller) 51 as the locking portion 5 at the edge on the other end side. The rotating bodies 41 and 51 are both rotatably connected to the lock device main body 2 and rotate as the door lock device 1 rotates. In this embodiment, the rotating bodies 41 and 51 are both rotatable about the axis of the lock device main body 2. Also, in this embodiment, the rotating bodies 41 and 51 are both composed of ball bearings, but there are no particular restrictions on the configuration, and they can be composed of known or future-developable rotating bodies. On the other hand, in this embodiment, the engaging hole 62 is formed to penetrate along the end portion 31b on the leading edge side of the door 31 (along the left-right direction in FIG. 5) so that at least a part of the circumferential surface of the rotating body 41 can be inserted. Similarly, the engaging hole 72 is formed to penetrate along the end portion 32b on the leading edge side of the door 32 (along the left-right direction in FIG. 5) so that at least a part of the circumferential surface of the rotating body 51 can be inserted. Therefore, as shown in FIG. 7, a part of the circumferential surface of the rotating body 41 is inserted into the engaging hole 62, and as shown in FIG. 8, a part of the circumferential surface of the rotating body 51 is inserted into the engaging hole 72, whereby the rotating bodies 41 and 51 as the locking portions are engaged or fitted with the engaging holes 62 and 72 provided on the doors 31 and 32. In this embodiment, the rotating bodies 41 and 51 are configured such that when the closing of the doors 31 and 32 is locked, about 0.7 mm or more and 1.0 mm or less in the radial direction from their circumferential surfaces are inserted into the engaging holes 62 and 72.

[0044] In this embodiment, the lock device body 2 is formed such that the diameter (size) of the support shaft insertion hole 2a is slightly larger than the outer diameter (thickness) of the support shaft 8 as shown in FIG. 4(B). Therefore, both longitudinal ends of the door lock device 1 can swing in a direction parallel to the axial direction of the support shaft 8.

[0045] FIG. 6 is an explanatory diagram showing an example of the process until the engagement between the door lock device shown in FIG. 2 and the engaging portions provided on each door is achieved. As shown in FIG. 6, the lock device body 1 is configured to be able to construct a state in which when one end (the left end in FIG. 6) swings downward, the other end (the right end in FIG. 6) swings upward. Furthermore, in this embodiment, among the engagement holes 62 and 72, one engagement hole (engagement hole 72 as shown in FIG. 5) is formed to extend longer than the other engagement hole (engagement hole 62 as shown in FIG. 5) in the rotational direction (counterclockwise direction; left direction in FIG. 5) in which the engagement of the locking portion of the lock device 1 is released when viewed from above. Therefore, when the door lock device 1 is rotated, one of the locking portions (the rotating body 51 as the locking portion 5 in this embodiment) first engages with one of the engaging portions (engagement hole 72 in this embodiment), and at the same time, the one locking portion swings downward (FIG. 6(B)). Then, the other locking portion (the rotating body 41 as the locking portion 4 in this embodiment) engages with the other engaging portion (engagement hole 62 in this embodiment), and at the same time, the other locking portion swings downward (FIG. 6(C)). As a result, it becomes possible to lock and unlock the closing of the doors (the first door and the second door) more smoothly and reliably.

[0046] In this embodiment, as shown in FIG. 4, on the outer periphery of the support shaft 8, with the support shaft 8 inserted through the support shaft insertion hole 2a, a required interval is provided from the upper opening edge 2b of the support shaft insertion hole 2a, and a pair of annular members 10a, 10b extending in a direction perpendicular to the axial direction of the support shaft 8 (horizontal direction in FIG. 4) are mounted. The pair of annular members 10a, 10b are configured such that the outer diameter of the annular member 10a disposed at least on the side of the support shaft insertion hole 2a is larger than the outer diameter of the support shaft insertion hole 2a. With such a configuration, a gap S of a required size extending in the axial direction of the support shaft 8 is formed between the lower end edge (bottom surface) of the annular member 10a and the upper opening edge 2b. Therefore, both longitudinal ends of the lock device main body 2 constituting the door lock device 1 are configured to swing within a predetermined range along a direction parallel to the axial direction of the support shaft 8. That is, the pair of annular members 10a, 10b constitute a swing range adjusting member 10 that adjusts the swing range of both longitudinal ends of the lock device main body 2. In FIG. 4, the annular members 10a, 10b are both constituted by nuts, the support shaft 8 is constituted by a bolt, and the upper end edge (upper surface) of the annular member (second annular member) 10b abuts against the lower end of the head 8a of this bolt. Also, in FIG. 4, above the support shaft insertion hole 2a, a storage space 9 is provided which communicates with the support shaft insertion hole 2a and is formed to be able to accommodate at least a part (lower end part in FIG. 4) of the annular member 10a.

[0047] The engaging holes 62, 72 may be disposed at required height positions, and a guide mechanism for guiding the movement of the rotating bodies 41, 51 toward the engaging holes 62, 72 may be provided. In FIG. 7, the flange portion 61 is extended from the wall surface 11c to a required height position at the edge on the door tip side of the door 31, and an engagement hole 62 is formed in this flange portion 61. A first inclined portion 63 that slopes downward is formed from the edge of the flange portion 61 in the rotation direction (counterclockwise direction; right direction in FIG. 7) in which the engagement of the locking portion of the door locking device 1 is released. Similarly, in FIG. 8, the flange portion 71 is extended from the wall surface 11c to a required height position at the edge on the door tip side of the door 32, and an engagement hole 72 is formed in this flange portion 71. A second inclined portion 73 that slopes downward is formed from the edge of the flange portion 71 in the rotation direction (counterclockwise direction; left direction in FIG. 8) in which the engagement of the locking portion of the door locking device 1 is released. Therefore, when the door locking device 1 is rotated in the direction of locking the closing of the doors 31 and 32, the rotating bodies 41 and 51 move on the inclined portions 63 and 73 respectively and engage (fit) with the engagement holes 62 and 72 formed in the flange portions 61 and 71. In FIGS. 7 and 8, reference numerals 64a and 74a constitute flange portion support portions that stand upright upward from the wall surface 11c to support the flange portions 61 and 71 to a predetermined height, and reference numerals 64b and 74b constitute inclined portion support portions that stand upright upward from the wall surface 11c to support the inclined portions 63 and 73.

[0048] In a state where the closing of the doors 31 and 32 is not locked, as shown in FIG. 9(A), the rotating body 41 as one locking portion 4 of the door locking device 1 is in a state of being detached from the engagement hole 62 as the engagement portion provided in the first door 31. At this time, the rotating body 51 as the other locking portion 5 is also in a state of being detached from the engagement hole 72 as the engagement portion provided in the second door 32. That is, the locks of both doors 31 and 32 are released.

[0049] From this state, in Fig. 9(B), when a force is applied to the door lock device 1 in a predetermined direction (counterclockwise direction Q in Fig. 3), the door lock device 1 rotates about the support shaft 8 as a fulcrum. When the door lock device 1 is further rotated, as shown in Figs. 9(B) to (D), as the door lock device 1 rotates, the rotating body 41 of the door lock device 1 moves while rotating toward the flange portion 61 where the engaging hole 62 is formed on the inclined portion 63. At this time, the rotating body 51 of the door lock device 1 also moves while rotating toward the flange portion 71 where the engaging hole 72 is formed on the inclined portion 73.

[0050] Furthermore, when the door lock device 1 is rotated, the engaging hole 72 is formed so as to be longer than the other engaging hole toward the rotation direction side where the engagement of the locking portions 4 and 5 of the door lock device 1 is released, as viewed from above. Therefore, as shown in Fig. 9(E), first, one rotating body 51 engages (fits) with the engaging hole 72, and at the same time, the end portion of the door lock device 1 to which this rotating body 51 is attached swings downward. At this time, the end portion of the door lock device 1 to which the other rotating body 41 is attached swings upward.

[0051] After that, when the door lock device 1 is further rotated, as shown in Fig. 9(F), the rotating body 41 also engages (fits) with the engaging hole 62. Therefore, the end portion of the door lock device 1 to which the rotating body 41 is attached swings downward, and the lock device main body 2 constituting the door lock device 1 returns to a horizontal state. Therefore, since the first door 31 and the second door 32 are supported by the door lock device 1, both the first door 31 that closes the first opening 11a and the second door 32 that closes the second opening 11b are in a locked state.

[0052] When the door lock device 1 is rotated in the counterclockwise direction, conversely, first, the rotating body 41 as the locking portion 4 of this door lock device 1 disengages from the engaging hole 62 provided in the first door 31, and then the rotating body 51 as the locking portion 5 disengages from the engaging hole 72 provided in the second door 32. Therefore, the locking of the closing of the doors 31 and 32 is released.

[0053] In this embodiment, when the door lock device 1 is rotated counterclockwise, the closing of the door 3 is locked. On the other hand, when it is rotated clockwise, the locking of the closing of the doors 31 and 32 is released. However, the rotation direction of the door lock device 1 can be appropriately changed.

[0054] In the present invention, the door lock device 1 may be configured such that known control means, driving means, etc. are provided on the doors 31 and 32 and / or the door lock device 1, so as to be able to control the opening and closing of the door and / or the rotation of the door lock device. With such a configuration, it becomes possible to automatically perform the opening and closing of the door, and the locking and unlocking of the closing of the door by the door lock device.

[0055] Furthermore, in the present invention, together with the door lock device, a known lock device other than the door lock device may be provided as a second door lock device, so as to be configured to be able to lock the closing of the door more firmly.

[0056] The door lock device 1 having such a configuration can be used as a lock device for the door (such as an opening and closing door or a hatch) having the above configuration, and can be used as a door lock device for an opening and closing door, a hatch, etc. provided on a container. In particular, it is suitable as a door lock device for a container. In this embodiment, the doors 31 and 32 and the door lock device 1 are disposed on the upper surface wall (ceiling wall) of the container, but may be disposed at a portion other than the ceiling wall such as a side wall or a bottom wall.

[0057] Furthermore, in this embodiment, the door lock device 1 is disposed on the upper surface wall (ceiling wall) of the container. However, if the door 3 to be locked and unlocked has the above configuration, the door lock device 1 of the present invention can be applied and can be disposed at a portion other than the ceiling wall such as a side wall or a bottom wall.

[0058] [Configuration included in the embodiment of the present invention] The disclosure of this embodiment includes the following configurations. (Configuration 1) A door lock device for locking and unlocking the closing of a door that opens and closes in a predetermined direction, The door is composed of a first door and a second door, The first door and the second door are configured to swing or move in a direction in which the end portions on the leading edge side of each other approach or separate from each other, The first door is provided with a first engaging portion at the end portion on its leading edge side, The second door is provided with a second engaging portion at the end portion on its leading edge side, The door lock device is composed of a lock device main body that is entirely made of a long bar-shaped member, The lock device main body has a support shaft insertion hole for inserting a support shaft at its central portion, and is rotatable about the support shaft inserted through the support shaft insertion hole. At one end side in the longitudinal direction, it has a first locking portion configured to be engageable with the first engaging portion, and at the other end side, it has a second locking portion configured to be engageable with the second engaging portion, Both the first engaging portion and the second engaging portion are each composed of an engaging hole formed to penetrate from the outside to the inside or an engaging concave portion formed to be recessed from the outside to the inside, The engaging hole or the engaging concave portion is formed such that, in a top view, its center is biased toward the rotation direction side from the axis of the lock device main body in a state where the closing of the first door and the second door is locked, and the engagement of the locking portion of the lock device main body is released. Also, one engaging hole or engaging concave portion is formed to extend longer than the other engaging hole or engaging concave portion by a required length toward the rotation direction side where the engagement of the first engaging portion and the second locking portion of the lock device main body is released in a top view, A door lock device characterized by the above. (Configuration 2) The door lock device according to Configuration 1, wherein the lock device main body is configured such that the diameter of the support shaft insertion hole is larger than the outer diameter of the support shaft, so that both end portions in its longitudinal direction can swing in a direction parallel to the axis direction of the support shaft. (Configuration 3) On the outer periphery of the support shaft, with the support shaft inserted into the support shaft insertion hole, an annular member extending in a direction perpendicular to the axial direction of the support shaft is mounted with a required interval from the upper opening edge of the support shaft insertion hole, so that both longitudinal ends of the lock device body are configured to swing within a predetermined range along a direction parallel to the axial direction of the support shaft. The door lock device according to Configuration 2. (Configuration 4) The first locking portion and the second locking portion are both constituted by rotatable bodies rotatably connected to both end edges in the longitudinal direction of the lock device body, respectively. The door lock device according to any one of Configurations 1 to 3. (Configuration 5) The first door and the second door are arranged side by side with a predetermined interval therebetween, and the lock device body is disposed between the first door and the second door. The door lock device according to any one of Configurations 1 to 4. (Configuration 6) The first engaging portion is formed on a first flange portion extending from the edge on the door tip side of the first door toward the second door, and the second engaging portion is formed on a second flange portion extending from the edge on the door tip side of the second door toward the first door. The door lock device according to Configuration 5. (Configuration 7) The first flange portion extends from the edge on the door tip side of the first door so as to be located at a required height from the wall surface, and includes a first inclined portion formed to incline downward in the rotation direction in which the engagement of the first locking portion of the lock device body is released from the edge of the first flange portion. The second flange portion extends from the edge on the door tip side of the second door so as to be located at a required height from the wall surface, and includes a second inclined portion formed to incline downward in the rotation direction in which the engagement of the second locking portion of the lock device body is released from the edge of the second flange portion. The door lock device according to Configuration 6. (Configuration 8) The first door and the second door are configured to swing in a direction in which the end portions on the door tip sides of each other approach or separate. The door lock device according to any one of Configurations 1 to 7.

Industrial Applicability

[0059] The door locking device of the present invention enables easy and reliable locking and unlocking of a pair of doors (opening / closing doors or hatches) arranged side by side at a predetermined interval in, for example, the left-right or up-down direction on the wall surface of a container or the like. Such a door with such a configuration can be used for any door.

Explanation of reference numerals

[0060] 1 Door locking device, 2 Locking device main body, 2a Support shaft insertion hole, 3 Door, 31 First door, 31a Hinge, 31b End portion on the door tip side, 32 Second door, 32a Hinge, 32b End portion on the door tip side, 4 First locking portion, 41 Rotating body (first rotating body), 5 Second locking portion, 51 Rotating body (second rotating body), 6 First engaging portion, 61 Flange portion (first flange portion), 62 First engaging hole, 63 Inclined portion, 64a Flange portion support portion (first flange portion support portion), 64b Inclined portion support portion (first inclined portion support portion), 7 Second engaging portion, 71 Flange portion (second flange portion), 72 Second engaging hole, 73 Inclined portion, 74a Flange portion support portion (second flange portion support portion), 74b Inclined portion support portion (second inclined portion support portion), 8 Support shaft, 8a Head portion, 9 Accommodation space, 10 Swing range adjustment member, 10a First annular member (nut), 10b Second annular member (nut), 11 Upper surface wall (ceiling wall), 11a First opening, 11b Second opening, 11c Wall surface, 12 Support member, 13 Regulation member, S Gap

Claims

1. A door lock device for locking and unlocking the closing of a door that opens and closes in a predetermined direction, wherein the door is composed of a first door and a second door, the first door and the second door are configured to swing or move in a direction in which the end portions on the leading edge side of each other approach or separate from each other, the first door is provided with a first engaging portion at the end portion on its leading edge side, the second door is provided with a second engaging portion at the end portion on its leading edge side, the door lock device is composed of a lock device main body made of a long bar-shaped member, the lock device main body has a support shaft insertion hole for inserting a support shaft at its central portion, and is rotatable about the support shaft inserted through the support shaft insertion hole. It has a first locking portion configured to be engageable with the first engaging portion at one end side in the longitudinal direction, and a second locking portion configured to be engageable with the second engaging portion at the other end side, both the first engaging portion and the second engaging portion are each composed of an engaging hole formed by a through hole penetrating from the outside to the inside or an engaging recess formed to be recessed from the outside to the inside, the engaging hole or the engaging recess is formed such that, in a top view, its center is biased toward the rotation direction side where the engagement of the locking portion of the lock device main body is released from the axis of the lock device main body in a state where the closing of the first door and the second door is locked. Also, one engaging hole or engaging recess is formed to extend by a required length longer than the other engaging hole or engaging recess toward the rotation direction side where the engagement of the first engaging portion and the second locking portion of the lock device main body is released in a top view, characterized by a door lock device.

2. The lock device main body, is configured such that the diameter of the support shaft insertion hole is formed to be larger than the outer diameter of the support shaft, so that both end portions in its longitudinal direction are configured to be swingable in a direction parallel to the axial direction of the support shaft, characterized by the door lock device according to claim 1.

3. An annular member extending in a direction perpendicular to the axial direction of the support shaft is mounted on the outer periphery of the support shaft with a required interval from the upper opening edge portion of the support shaft insertion hole in a state where the support shaft is inserted through the support shaft insertion hole, so that both end portions in the longitudinal direction of the lock device main body are configured to swing within a predetermined range along a direction parallel to the axial direction of the support shaft, characterized by the door lock device according to claim 2.

4. Both the first locking portion and the second locking portion are each It is configured by rotators rotatably connected to both longitudinal ends of the lock device body respectively. The door lock device according to claim 1 or 2, characterized in that.

5. The first door and the second door are arranged side by side with a predetermined interval therebetween, The lock device body is disposed between the first door and the second door. The door lock device according to claim 1 or 2, characterized in that.

6. The first engaging portion is formed on a first flange portion extending from the edge of the leading end side of the first door toward the second door, The second engaging portion is formed on a second flange portion extending from the edge of the leading end side of the second door toward the first door. The door lock device according to claim 5, characterized in that.

7. The first flange portion extends from the edge of the leading end side of the first door so as to be located at a required height from the wall surface, and is provided with a first inclined portion formed to incline downward in the rotational direction in which the engagement of the first locking portion of the lock device body is released from the edge of the first flange portion. The second flange portion extends from the edge of the leading end side of the second door so as to be located at a required height from the wall surface, and is provided with a second inclined portion formed to incline downward in the rotational direction in which the engagement of the second locking portion of the lock device body is released from the edge of the second flange portion. The door lock device according to claim 6, characterized in that.

8. The first door and the second door are configured to swing in a direction in which the leading end side ends of each other approach or separate from each other. The door lock device according to claim 1 or 2, characterized in that.

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