JP7617614B2 - Door lock device - Google Patents

Description

This invention relates to a door lock device.

Door locking devices include devices that lock the doors that open and close the opening of a greenhouse in the closed position.

For example, the vinyl greenhouse shown in Patent Document 1 has an opening, a pair of left and right doors that are attached so as to slide freely along the width direction of the opening, and handle fittings that are fixed to the surface of each door that faces the outside of the vinyl greenhouse. The handle fittings have a base that is fixed to the door and a handle that rises from the base toward the side opposite the door, and each handle has opening holes that face each other.

Conventionally, doors have been locked by inserting a chain lock through each opening or by inserting a padlock hasp through each opening.

Japanese Utility Model Application Publication No. 3-99178

However, with conventional methods, in order to lock a door, it is necessary to take the trouble of preparing a lock and key, such as a chain lock or padlock.

As a result, even when the purpose of locking the door was not for security reasons such as preventing third parties from entering the greenhouse, but simply to prevent the door from opening naturally due to wind or other factors, it was extremely troublesome to have to take the trouble to lock the door with a chain lock or padlock.

In addition, with conventional methods, the lock and key must be stored in a separate location from the greenhouse, making management of the lock and key cumbersome and risking loss.

The present invention aims to provide a door lock device that can easily lock and unlock a greenhouse door and does not risk being lost.

In order to achieve the above object, the present invention provides a door lock device for locking a door in a closed state in a vinyl greenhouse having an opening and a door for opening and closing the opening, the device comprising: a handle member attached to the surface of the door facing the outside of the vinyl greenhouse; a lock piece held on the handle member so as to be movable in the axial direction about an axis that does not coincide with the movement direction of the door and rotatable around the axis; and an opposing member attached to a position facing the handle member on the vinyl greenhouse when the door is closed and having an insertion portion into which the lock piece can be inserted and removed. With this configuration, the door can be locked and unlocked simply by inserting and removing the lock piece held by the handle member from the insertion portion.

In the door lock device of the present invention, the handle member has a cylindrical socket, and the lock piece has a rod portion that is inserted into the socket so as to be freely movable in the axial direction and rotatable, a pin portion that is arranged parallel to the rod portion and can be inserted and removed from the insertion portion, and a connecting portion that connects one end of the rod portion and one end of the pin portion, and the axial length of the rod portion may be longer than the axial length of the pin portion. With this configuration, the movement of the rod portion toward the other end can be restricted by the connecting portion, so that the lock piece can be prevented from coming off the other end of the rod portion.

In addition, the door lock device of the present invention may have an axial length of the rod portion that is longer than the combined axial length of the socket and the pin portion, and may have a stopper that is detachably provided at the other end of the rod portion and can abut against the end of the socket. With this configuration, the rod portion can be prevented from coming out of the socket, so that loss of the lock piece can be more reliably prevented.

In addition, in the door lock device of the present invention, the connecting portion may be U-shaped and the lock piece may be J-shaped. With this configuration, even if the worker is wearing work gloves, the connecting portion can be easily grasped, making it easy to lock and unlock the door lock device.

In addition, in the door lock device of the present invention, the socket may extend in the vertical direction, and the lock piece may be inserted and removed from the insertion portion from above. With this configuration, gravity prevents the lock piece from falling out, so that the lock piece can be more reliably prevented from unintentionally falling out of the insertion portion.

In addition, in the door lock device of the present invention, the handle member has a base portion fixed to the door and a flat handle portion extending from the base portion toward the side opposite the door, and the socket may be disposed closer to the base portion than half the length of the handle portion in the extension direction. With this configuration, when attaching the handle member to the door, the tip side of the handle portion can be grasped without being hindered by the socket, making it easier to attach the handle member to the door.

In addition, in the door lock device of the present invention, the opposing member may have a cylindrical insertion portion into which the lock piece can be inserted and removed, and may have the same shape as the handle member. With this configuration, it is not necessary to manufacture the handle member and the opposing member separately, which reduces manufacturing costs.

In addition, in the door lock device of the present invention, the pin portion may be set to an axial length that allows it to be inserted at least halfway into the insertion portion. With this configuration, the pin portion is less likely to come out of the insertion portion, so that unintentional unlocking of the door can be more reliably prevented.

In addition, in the door lock device of the present invention, the opposing member may be provided on a mating door that is paired with the door and can open and close the opening together with the door. With this configuration, the door can be locked when the vinyl greenhouse door opens on both sides.

In addition, in the door lock device of the present invention, the opposing member may be provided on a pillar that faces the door when the door closes the opening. With this configuration, the door can be locked when the vinyl greenhouse door opens to one side.

The door lock device of the present invention makes it easy to lock and unlock the greenhouse door and prevents it from being lost.

1 is a perspective view showing a vinyl greenhouse provided with a door lock device according to a first embodiment; FIG. 2 is a perspective view showing the door lock device of the first embodiment in a locked state. FIG. 2 is an exploded perspective view of the door lock device according to the first embodiment. 2 is a cross-sectional view taken along line AA of FIG. 1. FIG. 2 is a perspective view showing the door lock device of the first embodiment in an unlocked state. 1 is a perspective view showing a door locking device according to a first embodiment, illustrating an operation during switching from an unlocked state to a locked state; FIG. FIG. 11 is a perspective view showing a door lock device according to a second embodiment. FIG. 8 is a cross-sectional view of FIG. FIG. 13 is a perspective view showing a door lock device in a first modified example of the second embodiment. FIG. 10 is a cross-sectional view of FIG. FIG. 13 is a perspective view showing an opposing member of a door lock device in a second modified example of the second embodiment. FIG. 12 is a cross-sectional view of FIG. FIG. 13 is a perspective view showing an opposing member of the door lock device in a third modified example of the second embodiment.

The present embodiment will be described below with reference to the drawings. The same reference numerals are used throughout the drawings to indicate the same parts.

The door lock device 1 of the first embodiment is for locking the doors 10A and 10B in a closed state in a vinyl greenhouse H having an opening O, a door 10A that opens and closes the opening O, and a mating door 10B that is paired with the door 10A and can open and close the opening O. Specifically, as shown in Figs. 1 to 6, the door lock device 1 of the present invention includes a handle member 2 attached to the surface of the door 10A facing the outside of the vinyl greenhouse H, a lock piece 6 that is held on the handle member 2 so as to be movable in the axial direction around an axis that does not coincide with the movement direction of the doors 10A and 10B and can rotate around the axis, and an opposing member 3 that is attached to a position facing the handle member 2 of the vinyl greenhouse H when the doors 10A and 10B are closed and has an insertion portion 5 into which the lock piece 6 can be inserted and removed.

As shown in FIG. 1, the vinyl greenhouse H of this embodiment includes a plurality of arch pipes 20 arranged in a line in the depth direction of the vinyl greenhouse H, and a plurality of first sheet fixing frames 21 that are stretched between the arch pipes 20, 20 in the depth direction, and the roof side sheet S1 is stretched along the arch pipes 20 via the first sheet fixing frames 21.

As shown in FIG. 1, the gable side of the vinyl greenhouse H is provided with a plurality of support pipes 22 that support the arch pipes 20 arranged on the gable side of the vinyl greenhouse H from below and are arranged along the width direction of the vinyl greenhouse H, and a plurality of second sheet fixing frames 23 that are spanned between each of the support pipes 22, 22 along the width direction of the vinyl greenhouse H.

Furthermore, as shown in FIG. 1, a rectangular opening O is provided on the gable side of the vinyl greenhouse H, surrounded by the support pipes 22, the second sheet fixing frame 23, and the ground G. The gable side sheet S2 is stretched over the part of the vinyl greenhouse H other than the opening O on the gable side via the second sheet fixing frame 23, and the opening O functions as an entrance and exit for the vinyl greenhouse H. The opening O needs to be provided on at least one gable side of the vinyl greenhouse H, but may be provided on both sides.

Returning to the gable side of the vinyl greenhouse H, as shown in FIG. 1, there is an upper rail 24 that is installed between the support pipes 22, 22 so as to follow the upper edge of the opening O, and a lower rail 25 that is installed between the support pipes 22, 22 so as to follow the ground G. Furthermore, between the upper rail 24 and the lower rail 25, a pair of doors 10A, 10B that can open and close the opening O are attached so as to slide freely in the left-right direction in FIG. 1, which is the width direction of the vinyl greenhouse H. Thus, in this embodiment, the opening O of the vinyl greenhouse H is opened and closed by the double-hinged doors 10A, 10B.

As shown in FIG. 1, the doors 10A and 10B of this embodiment have the same structure and both include a frame 11 and a door sheet S3 stretched over the frame 11. Specifically, the frame 11 has a pair of vertical frame members 11a and 11b extending vertically, a pair of horizontal frame members 11c and 11c that are respectively suspended between the upper and lower ends of the pair of vertical frame members 11a and 11b, and two intermediate frame members 11d that are arranged at a predetermined interval between the pair of horizontal frame members 11c and 11c and suspended between the pair of vertical frame members 11a and 11b.

Each of the frame members 11a, 11b, 11c, and 11d has a groove 12 whose opening width is narrower than the width of the bottom, and the frame body 11 is installed so that the groove 12 faces the outside of the vinyl greenhouse H. As shown in FIG. 1, a door sheet S3 is inserted into the groove 12 of each of the frame members 11a, 11b, 11c, and 11d, and a corrugated spring 13 is inserted from above, so that the door sheet S3 is stretched over the frame body 11 by the elastic force of the spring 13.

Although not described in detail, rollers (not shown) are attached to the upper and lower ends of the frame 11, allowing the doors 10A and 10B to run on the upper rail 24 and the lower rail 25 via the rollers. Note that the configuration of the doors 10A and 10B in this embodiment is merely an example, and is not limited to the above configuration.

Next, the door lock device 1 of this embodiment will be described in detail. As shown in FIG. 2, the door lock device 1 of this embodiment includes a handle member 2 attached to the surface of the door 10A facing the outside of the vinyl greenhouse H, an opposing member 3 attached to the surface of the mating door 10B facing the outside of the vinyl greenhouse H in a position opposite the handle member 2, and a lock piece 6 that is held by the handle member 2 so as to be movable in the axial direction around an axis that does not coincide with the movement direction of the doors 10A and 10B, and is rotatable around the axis and can be inserted and removed from the insertion portion of the opposing member 3.

The following is a detailed description of each part of the door lock device 1 of this embodiment. In this embodiment, the handle member 2 and the opposing member 3 have the same structure and shape as shown in Figure 2, so the detailed structures of the handle member 2 and the opposing member 3 will be described at the same time.

As shown in Figs. 1 and 2, the handle member 2 and the opposing member 3 in this embodiment are attached to the opposing vertical frame members 11a (hereinafter referred to as the "inner vertical frame member 11a") of the left and right doors 10A and 10B at opposing positions. Specifically, as shown in Figs. 2 and 3, the handle member 2 and the opposing member 3 have a rectangular flat plate-shaped base 2a (3a) fixed to the inner vertical frame member 11a so that the longitudinal direction coincides with the extension direction of the inner vertical frame member 11a, a flat plate-shaped handle portion 2b (3b) extending from one of the left and right side ends of the base 2a (3a) toward the side opposite the inner vertical frame member, and a protruding portion 2c (3c) extending from the base end of the handle portion 2b (3b) along the extension direction of the base portion 2a (3a). Note that the shape of the base portion 2a (3a) is an example and is not limited to a rectangular flat plate shape.

In this embodiment, the handle member 2 provided on the door 10A on the left side in FIG. 2 is attached to the inner vertical frame member 11a so that the handle portion 2b is located at the right side end of the base portion 2a in the figure. On the other hand, the opposing member 3 provided on the mating door 10B on the right side in FIG. 2 is attached to the inner vertical frame member 11a so that the handle portion 3b is located at the left side end of the base portion 3a in the figure. That is, in this embodiment, the handle member 2 and the opposing member 3 are attached to each door 10A, 10B as shown in FIG. 2 so that the handle portions 2b, 3b are closest to each other when the doors 10A, 10B are closed. However, the position where the handle portion 2b (3b) is provided is not limited to the left and right side ends of the base portion 2a (3a), and may be provided, for example, near the center of the base portion 2a (3a).

As shown in FIG. 3, a rectangular mounting hole 2d (3d) is formed in the center of the base 2a (3a) through which a bolt 30 (described later) can be inserted to mount the handle member 2 and the opposing member 3 to the doors 10A and 10B. Furthermore, a pair of projections 2e, 2e (3e, 3e) extending along the longitudinal direction of the base 2a (3a) and facing each other are provided on the surface of the base 2a (3a) facing the inner vertical frame member 11a. The distance between the pair of projections 2e, 2e (3e, 3e) is set to a length that corresponds to the opening width of the groove 12 of the inner vertical frame member 11a.

2 and 3, a cylindrical socket 4 and an insertion portion 5 extending in the vertical direction are provided on the surface of each handle portion 2b (3b) that does not face the other handle portion 3b (2b). The socket 4 is provided on the handle member 2 to hold the lock piece 6, and the insertion portion 5 is provided on the opposing member 3 to insert and remove the lock piece 6 from the opposing member 3. Although the socket 4 and the insertion portion 5 have different roles, in the door lock device 1 of this embodiment, both are cylindrical and have the same shape, and are provided on the handle member 2 and the opposing member 3, respectively.

Specifically, as shown in FIG. 4, the socket 4 and the plug-in portion 5 are disposed closer to the base 2a (3a) than half the length of the handle portion 2b (3b) in the extension direction. However, the socket 4 and the plug-in portion 5 may be disposed in the middle of the handle portion 2b (3b) in the extension direction or closer to the tip side than half the length of the handle portion 2b (3b) in the extension direction. Furthermore, as shown in FIG. 2 and FIG. 3, a long hole 2f (3f) with rounded corners that is long in the vertical direction is formed between the tip of the handle portion 2b (3b) and the socket 4 and plug-in portion 5.

Next, a method for attaching the handle member 2 and the opposing member 3 to the inner vertical frame member 11a in this embodiment will be described. Here, a round hole 14 is provided at the bottom of the groove 12 of the inner vertical frame member 11a at an arbitrary height position of the inner vertical frame member 11a, as shown in FIG. 3.

First, while grasping the handle portion 2b (3b), the worker fits the pair of protrusions 2e, 2e (3e, 3e) on the base portion 2a (3a) into the open end of the groove 12 on the inner vertical frame member 11a, and then positions the mounting hole 2d (3d) on the base portion 2a (3a) facing the round hole 14 on the inner vertical frame member 11a.

In this case, the distance between the pair of protrusions 2e, 2e (3e, 3e) is a length that corresponds to the opening width of the groove 12 of the inner vertical frame member 11a, so when the pair of protrusions 2e, 2e (3e, 3e) are fitted into the opening end of the groove 12 of the inner vertical frame member 11a, the movement of the handle member 2 and the opposing member 3 in a direction transverse to the axial direction of the inner vertical frame member 11a can be restricted. In other words, the pair of protrusions 2e, 2e (3e, 3e) function as a guide that guides the handle member 2 and the opposing member 3 to move along the axial direction of the inner vertical frame member 11a. Therefore, when aligning the mounting hole 2d (3d) with the round hole 14, it is only necessary to align them vertically, making it easier to align the mounting hole 2d (3d) with the round hole 14.

In this embodiment, the pair of protrusions 2e, 2e (3e, 3e) are used as guides to guide the axial movement of the inner vertical frame member 11a of the handle member 2 and the opposing member 3. However, using the pair of protrusions 2e, 2e (3e, 3e) as guides is just one example. Instead of the pair of protrusions 2e, 2e (3e, 3e), for example, a convex portion with a width that matches the opening width of the groove 12 of the inner vertical frame member 11a may be provided on the surface of the base 2a (3a) on the inner vertical frame member 11a side, and the convex portion may be used as the guide. However, since the cross-sectional area of the pair of protrusions 2e, 2e (3e, 3e) is smaller than that of the convex portion, using the pair of protrusions 2e, 2e (3e, 3e) as guides is preferable because it reduces material.

Going back to Figure 4, with the mounting hole 2d (3d) and the round hole 14 facing each other, the screw shaft 30a of the bolt 30 is inserted from the base 2a (3a) side and the nut 31 is tightened from the opposite side. Then, the head 30b of the bolt 30 and the nut 31 clamp the handle member 2 and the base 2a (3a) of the opposing member 3, so that the handle member 2 and the opposing member 3 are fixed to the inner vertical frame material 11a of the doors 10A and 10B.

As shown in Figures 3 and 4, the bolt 30 of this embodiment has a square fitting portion 30c between the head 30b and the screw shaft 30a that fits with the mounting hole 2d (3d) of the base 2a (3a), and when the bolt 30 is inserted, the fitting portion 30c fits into the mounting hole 2d (3d), preventing the bolt 30 from rotating around its axis. Therefore, when the nut 31 is screwed onto the screw shaft 30a of the bolt 30, the bolt 30 does not rotate around its axis.

In this embodiment, the mounting hole 2d (3d) and the fitting portion 30c of the base 2a (3a) are each formed in a square shape, but as long as the bolt 30 can be prevented from rotating, the shape of the mounting hole 2d (3d) and the fitting portion 30c may be a shape other than a perfect circle. Alternatively, the bolt 30 may be prevented from rotating by another method. The bolt 30 may be another type of screw that does not have a mechanism for preventing rotation.

In addition, as shown in FIG. 3, the outer periphery of the head 30b of the bolt 30 in this embodiment is circular, and the head 30b does not have a groove into which a screwdriver can be inserted. Therefore, the handle member 2 and the opposing member 3 cannot be removed from the outside of the greenhouse H.

In addition, in this embodiment, the socket 4 and the insertion portion 5 are positioned closer to the base 2a (3a) than half the length of the handle portion 2b (3b) in the extension direction, so when attaching the handle member 2 and the opposing member 3 to the inner vertical frame member 11a of the door 10A, 10B, the tip side of the handle portion 2b (3b) can be grasped without being hindered by the socket 4 or the insertion portion 5. Therefore, in this embodiment, the work of attaching the handle member 2 and the opposing member 3 to the inner vertical frame member 11a of the door 10A, 10B is facilitated.

Next, the locking piece 6 will be described in detail. As shown in Figures 2 and 3, the locking piece 6 in this embodiment is formed in a J-shape as a whole, and includes a rod portion 6a that is inserted axially and rotatably into a socket 4 provided in the handle member 2, a pin portion 6b that is arranged parallel to the rod portion 6a and has a shorter axial length than the rod portion 6a and can be inserted and removed into an insertion portion 5 provided in the opposing member 3, and a U-shaped connecting portion 6c that connects one end of the rod portion 6a and one end of the pin portion 6b.

Specifically, the rod portion 6a is cylindrical and is inserted into the socket 4 with one end facing upward so that it can slide and rotate freely. If the rod portion 6a were not supported, it would move downward in the socket 4 due to gravity, but since the portion between the rod portion 6a and the connecting portion 6c is caught on the upper end of the socket 4, the downward movement of the rod portion 6a is restricted by the connecting portion 6c, and the lock piece 6 is held in the socket 4.

The socket 4 is cylindrical and extends vertically, so the lock piece 6 can move vertically, which does not coincide with the lateral direction in which the doors 10A and 10B move, and can rotate around the axis of the rod 6a.

In addition, in this embodiment, the axial length of the rod portion 6a is set to be longer than the sum of the axial length of the socket 4 and the axial length of the pin portion 6b. Therefore, when the rod portion 6a is held in the socket 4, the other end of the rod portion 6a protrudes from the lower end of the socket 4, as shown in FIG. 2.

In addition, the pin portion 6b in this embodiment is cylindrical, and when inserted into the insertion portion 5, the outer periphery is in sliding contact with the inner periphery of the insertion portion 5. Furthermore, as shown in FIG. 2, the axial length of the pin portion 6b in this embodiment is set to a length such that when the pin portion 6b is inserted into the insertion portion 5, the lower end of the pin portion 6b is positioned below the vertical center of the insertion portion 5, that is, the length is set to a length that is inserted more than halfway into the insertion portion 5, so that the pin portion 6b is difficult to remove from the insertion portion 5. However, the axial length of the pin portion 6b is not particularly limited, and it is sufficient that it can be inserted and removed from the insertion portion 5.

As shown in Fig. 2, a stopper 15 having an outer diameter larger than the inner diameter of one of the sockets 4 is detachably provided at the other end of the rod portion 6a. Specifically, as shown in Fig. 3, a screw groove 6d is formed on the outer periphery of the other end of the rod portion 6a, and the stopper 15, which is made of a nut, is screwed into the screw groove 6d.

The lock piece 6 can then only move upward until the stopper 15 abuts against the bottom end of the socket 4, reliably preventing the rod portion 6a from coming out of the socket 4. In addition, since the axial length of the rod portion 6a is longer than the sum of the axial length of the socket 4 and the axial length of the pin portion 6b, the pin portion 6b comes out of the insertion portion 5 at least when the stopper 15 abuts against the bottom end of the socket 4.

The stopper 15 in this embodiment is detachably attached to the outer periphery of the other end of the rod portion 6a. Therefore, when assembling the lock piece 6 to the socket 4, the rod portion 6a with the stopper 15 removed is inserted into the socket 4 from above, and the stopper 15 is screwed into the screw groove 6d formed on the outer periphery of the other end of the rod portion 6a protruding from the lower end of the socket 4. In this way, the lock piece 6 having the rod portion 6a with the stopper 15 whose outer diameter is larger than the inner diameter of the socket 4 can be easily assembled to the socket 4.

Next, the locking operation of the doors 10A and 10B by the door lock device 1 will be described in detail. First, the left and right doors 10A and 10B are slid inward to close the doors. At this time, the door lock device 1 is in a state where the doors 10A and 10B are not locked (released state) as shown in FIG. 5. Specifically, in the released state, as shown in FIG. 5, the pin portion 6b of the lock piece 6 is facing the opposite side of the insertion portion 5 (left side in the figure) with the handle portion 2b of the handle member 2 sandwiched therebetween. In this way, by facing the pin portion 6b to the opposite side of the insertion portion 5, it is possible to avoid the pin portion 6b interfering with the insertion portion 5 when closing the doors 10A and 10B.

In this embodiment, the length of the handle portion 2b (3b) in the extension direction (depth direction of the paper in FIG. 5) is set to be longer than the distance between the rod portion 6a and the pin portion 6b of the lock piece 6. Therefore, when the portion between the rod portion 6a and the connecting portion 6c is hooked on the socket 4, even if the rod portion 6a rotates and the pin portion 6b facing the opposite side of the insertion portion 5 tries to move toward the insertion portion 5, the pin portion 6b abuts against the handle portion 2b of the handle member 2, preventing the pin portion 6b from moving toward the insertion portion 5.

In addition, in this embodiment, the base ends of the handle portions 2b, 3b of the handle member 2 and the opposing member 3 are provided with protrusions 2c, 3c that extend toward each other. Therefore, when the doors 10A, 10B are closed, as shown in FIG. 5, a gap having a width at least equal to the total length of the protrusions 2c, 3c is formed between the handle portions 2b, 3b. This prevents the operator from getting his or her fingers pinched between the handle portions 2b, 3b when closing the doors 10A, 10B.

Next, as shown in FIG. 6, with the doors 10A and 10B closed, pinch the connecting portion 6c to pull up the locking piece 6, and rotate the locking piece 6 to a position where the tip of the pin portion 6b faces the insertion portion 5.

The vertical distance in FIG. 4 between the socket 4 and the insertion portion 5 and the base portions 2a and 3a is set to a distance that allows an operator wearing gloves to grasp the connecting portion 6c of the locking piece 6 with his/her index finger and thumb, that is, a length (approximately 5 mm in this embodiment) that allows the index finger wearing gloves to fit between the inner vertical frame member 11a of the doors 10A and 10B and the locking piece 6. In this embodiment, the connecting portion 6c of the locking piece 6 is formed in a U-shape, making it easy to grasp the connecting portion 6c even with gloves on.

In addition, in Figures 2 to 6, the door sheet S3 inserted into the groove 12 of the inner vertical frame member 11a and the spring 13 that secures the door sheet S3 to the inner vertical frame member 11a are omitted for ease of understanding.

Going back to the state where the tip of the pin portion 6b faces the insertion portion 5, as shown in FIG. 2, the rod portion 6a is moved downward to insert the pin portion 6b into the insertion portion 5. Then, since the movement direction of the locking piece 6 is the up-down direction while the movement direction of the doors 10A, 10B is the left-right direction, the movement directions of the locking piece 6 and the doors 10A, 10B do not match. Therefore, even if the doors 10A, 10B try to slide outward to open, the locking piece 6 restricts the movement of the doors 10A, 10B, so the doors 10A, 10B will not open. In other words, when the pin portion 6b is inserted into the insertion portion 5, the door lock device 1 is in a locked state.

In addition, in this embodiment, the locking piece 6 moves in the vertical direction, so gravity prevents the locking piece 6 from coming loose. This reliably prevents the pin portion 6b of the locking piece 6 from unintentionally coming loose from the insertion portion 5.

Furthermore, the rod portion 6a and the pin portion 6b are slidably inserted into the socket 4 and the insertion portion 5, respectively. Therefore, the rod portion 6a and the pin portion 6b do not rattle in the radial direction, and the generation of abnormal noise can be suppressed.

As described above, the door lock device 1 of this embodiment can simply lock the doors 10A and 10B. Although not shown, for crime prevention purposes such as preventing a third party from entering the greenhouse H, the doors 10A and 10B can be locked so that they cannot be opened from outside the greenhouse H by inserting a chain lock or padlock into the long holes 2f and 3f and locking them. To release the locked state of the doors 10A and 10B, simply perform the reverse operation of the locking procedure described above.

As described above, the door lock device 1 of this embodiment includes a handle member 2 attached to the surface of the doors 10A and 10B facing the outside of the greenhouse H, a lock piece 6 that is held on the handle member 2 so that it can move axially around an axis that does not coincide with the movement direction of the door 10A and can rotate around the axis, and an opposing member 3 that is attached to a position facing the handle member 2 of the greenhouse H when the door 10A is closed and has an insertion portion 5 through which the lock piece 6 can be inserted and removed.

With this configuration, the doors 10A and 10B can be locked and unlocked simply by inserting and removing the lock piece 6 from the insertion portion 5. Therefore, if the only purpose is to prevent the doors 10A and 10B from opening naturally due to wind or other factors, there is no need to use a chain lock or padlock, making the locking and unlocking operations much easier than in the past. Also, since the lock piece 6 is held by the handle member 2 attached to the door 10A, there is no risk of losing the lock piece 6.

Furthermore, since the lock piece 6 is held on the handle member 2 so that it can rotate around its axis, the lock piece 6 can be moved to a position where it does not interfere with the opposing member 3 when closing the doors 10A and 10B.

In this embodiment, the doors 10A and 10B are sliding doors that move in the left-right direction, and the locking piece 6 in this embodiment is held by the handle member 2 so that it can move in the axial direction around the up-down direction, which is a direction that does not coincide with the left-right direction in which the doors 10A and 10B move, and can rotate around the axis. In other words, in this embodiment, the movement direction of the locking piece 6 is the up-down direction.

However, the movement direction of the locking piece 6 is not limited to the up-down direction, so long as it does not match the movement direction of the doors 10A, 10B. For example, if the doors 10A, 10B are hinged doors that open toward the inside or outside of the greenhouse, and the movement direction of the doors 10A, 10B is other than the left-right direction, the movement direction of the locking piece 6 may be the left-right direction. Even in this case, the movement direction of the locking piece 6 does not match the movement direction of the doors 10A, 10B, so the doors 10A, 10B can be locked in the closed state.

In other words, the door locking device 1 can lock the doors 10A and 10B in a closed state if the movement direction of the locking piece 6 is set to a direction that does not match the movement direction of the doors 10A and 10B. Therefore, the door locking device 1 can lock the doors in a closed state regardless of whether they move up and down, left and right, or front and back.

In addition, if the axial direction of the locking piece 6 is perpendicular to the direction of movement of the doors 10A and 10B as in the door locking device 1 of this embodiment, this is advantageous because even if a force in the opening direction is applied to the doors 10A and 10B when locked, no component force acts in the direction of the locking piece 6 coming out of the insertion portion 5.

In this embodiment, the opening O of the greenhouse H is an entrance/exit, but the opening O is not limited to an entrance/exit and may be, for example, a ventilation opening.

In addition, in the door lock device 1 of this embodiment, the handle member 2 has a cylindrical socket 4, and the lock piece 6 has a rod portion 6a that is inserted into the socket 4 so as to be freely movable in the axial direction and rotatable, a pin portion 6b that is arranged parallel to the rod portion 6a and can be inserted and removed from the insertion portion 5, and a connecting portion 6c that connects one end of the rod portion 6a and one end of the pin portion 6b, and the axial length of the rod portion 6a is longer than the axial length of the pin portion 6b.

With this configuration, the movement of the rod portion 6a toward the other end can be restricted by the connecting portion 6c, so that the locking piece 6 can be prevented from coming out from the other end of the rod portion 6a.

In addition, in the door lock device 1 of this embodiment, the axial length of the rod portion 6a is longer than the combined axial length of the socket 4 and the pin portion 6b, and a stopper 15 that can abut against the end of the socket 4 is detachably provided on the other end of the rod portion 6a.

With this configuration, the stopper 15 can prevent the rod portion 6a from falling out of the socket 4, so the lock piece 6 can be more reliably prevented from being lost. In addition, since the stopper 15 is detachably provided on the other end of the rod portion 6a, if the stopper 15 is attached to the other end of the rod portion 6a after the rod portion 6a is inserted into the socket 4, the lock piece 6 equipped with the rod portion 6a having the stopper 15 can be easily assembled to one of the sockets 4.

In this embodiment, the stopper 15 is configured as a nut, but this is only one example, and it is not limited to a nut as long as it is detachably attached to the other end of the rod portion 6a. Also, the stopper 15 may be omitted.

In addition, in the door lock device 1 of this embodiment, the connecting portion 6c is U-shaped and the lock piece 6 is J-shaped. With this configuration, even if the worker is wearing work gloves, the connecting portion 6c can be easily grasped, so that the door lock device 1 can be easily locked and unlocked.

However, the shape of the connecting portion 6c is not particularly limited as long as it connects one end of the rod portion 6a and one end of the pin portion 6b. For example, the connecting portion 6c may be linear, and the locking piece 6 may be U-shaped as a whole. If the connecting portion 6c is shaped in a way that makes it difficult to grasp with the fingers, the operator can operate the locking piece 6 by grasping the other end of the rod portion 6a.

In addition, in the door lock device 1 of this embodiment, the socket 4 extends in the vertical direction, and the lock piece 6 is inserted and removed from the insertion part 5 from above. With this configuration, gravity prevents the lock piece 6 from falling out, so it is possible to more reliably prevent the lock piece 6 from unintentionally falling out of the insertion part 5.

In addition, in the door lock device 1 of this embodiment, the opposing member 3 has a cylindrical insertion portion 5 into which the lock piece 6 can be inserted and removed, and has the same shape as the handle member 2. With this configuration, it is not necessary to manufacture the handle member 2 and the opposing member 3 separately, so the manufacturing costs of the door lock device 1 can be reduced.

In addition, in the door lock device 1 of this embodiment, the handle member 2 and the opposing member 3 each have a base 2a (3a) fixed to the door 10A, 10B, and a flat handle portion 2b (3b) extending from the base 2a (3a) toward the side opposite the door, and the socket 4 and the insertion portion 5 are each located closer to the base 2a (3a) than half the length of the handle portion 2b (3b) in the extension direction.

With this configuration, when attaching the handle member 2 and the opposing member 3 to the doors 10A and 10B, the tip side of the handle portion 2b (3b) can be grasped without being hindered by the socket 4 or the insertion portion 5, making it easier to attach the handle member 2 and the opposing member 3 to the doors 10A and 10B.

In addition, in the door lock device 1 of this embodiment, the pin portion 6b is set to an axial length that allows it to be inserted at least halfway into the insertion portion 5. With this configuration, the pin portion 6b is less likely to come out of the insertion portion 5 than when the axial length of the pin portion 6b is set to a length that allows it to be inserted only halfway into the insertion portion 5 or less. This makes it possible to more reliably prevent the doors 10A and 10B from being unintentionally unlocked. However, the axial length of the pin portion 6b is not particularly limited, and it is sufficient that it is long enough to be inserted and removed from the insertion portion 5.

In addition, in the door lock device 1 of this embodiment, the opposing member 3 is provided on the mating door 10B that is paired with the door 10A and can open and close the opening O together with the door 10A. With this configuration, it is possible to lock the double-opening doors 10A and 10B. In addition, since the handle member 2 and the opposing member 3 are both attached to the doors 10A and 10B, it is easy to make the handle member 2 and the opposing member 3 the same shape.

In this embodiment, the handle member 2 is attached to the left door 10A when looking at the greenhouse H from the gable side, but whether the handle member 2 is attached to the left or right door can be determined arbitrarily based on factors such as the ease with which an operator can operate the door lock device 1.

Next, the door locking device 1A of the second embodiment will be described in detail. The door locking device 1A of the second embodiment is used to lock in a closed state a single-leaf door 10C that moves left and right to open and close an opening O, instead of the pair of doors 10A, 10B of the first embodiment. The door locking device 1A of the second embodiment differs from the door locking device 1 of the first embodiment in that, as shown in FIG. 7, the opposing member 3 is provided on the opposing door 10B, whereas the door locking device 1A of the second embodiment has an opposing member 40 provided on a pillar body 50 that faces the door 10C.

Below, we will explain in detail the differences between the door lock device 1A of the second embodiment and the door lock device 1 of the first embodiment. To avoid duplication of explanation, the same components will be given the same reference numerals and detailed explanations will be omitted.

The column body 50 of this embodiment is a steel material that stands up from the ground in the vertical direction and supports the arch pipe 20 on the gable side from below, and forms one side of the edge of the opening O. Specifically, as shown in FIG. 8, the column body 50 has a back surface 50a that faces the inside of the vinyl greenhouse H, an inner surface 50b that extends from the opening O side end (left end in the figure) of the back surface 50a and faces the opening O side, an outer surface 50c that extends from the opening O side end (right end in the figure) of the back surface 50a and faces the opposite opening side, and a front surface 50d that connects the opposite back side end of the inner surface 50b and the outer surface 50c and faces the outside of the vinyl greenhouse H. And, on the front surface 50d of the column body 50, as shown in FIG. 8, a groove 51 whose opening width is narrower than the width of the bottom is formed along the axial direction of the column body 50.

The structure of the door 10C in this embodiment is the same as the doors 10A and 10B in the first embodiment, so a detailed description will be omitted. However, as shown in FIG. 8, the door 10C is positioned in a position shifted toward the inside of the greenhouse H in the depth direction relative to the pillar body 50.

As shown in Figures 7 and 8, the opposing member 40 of this embodiment includes an opposing member body 41 having an insertion portion 43, and a clamping piece 42 that clamps the column body 50 together with the opposing member body 41.

7 and 8, the opposing member main body 41 includes a plate-shaped rear side plate portion 41a extending along the rear surface 50a of the pillar body 50, an inner plate portion 41b extending from one end (left end in the figure) of the rear side plate portion 41a, which is the opening O side end, to face the inner surface 50b of the pillar body 50, a hook portion 41c extending from the tip of the inner plate portion 41b and hooked onto the opening end on the opening O side of the groove 51 of the pillar body 50, an inclined plate portion 41d extending from the other end (right end in the figure), which is the opposite opening side end of the rear side plate portion 41a, to face the outer surface 50c of the pillar body 50, while inclining in the direction away from the pillar body 50, to approximately the middle of the depth direction width of the pillar body 50 (vertical width in FIG. 8), and a plate portion 41e extending from the end of the inclined plate portion 41d toward the opposite side to the pillar body. In this embodiment, the tip side of the inner plate portion 41b, which is the hook portion 41c side, is bent so that it bulges toward the opposite side to the column body, forming an insertion portion 43 with a U-shaped cross section on the inner plate portion 41b.

In this way, the insertion portion 43 is formed by bending, and since no cutting or machining is performed, no burrs are generated on the insertion portion 43. Therefore, the process of removing burrs can be omitted when manufacturing the opposing member 40.

On the other hand, as shown in Figures 7 and 8, the clamping piece 42 has a hook portion 42a that is hooked onto the opening end of the groove 51 of the column body 50 on the side opposite the opening, a plate portion 42b that faces the plate portion 41e of the opposing member main body 41, and a connecting plate portion 42c that connects the hook portion 42a and the plate portion 42b.

In addition, holes 41f and 42d are formed in each plate portion 41e and 42b, respectively, so that they face each other when the hook portions 41c and 42a are hooked onto the open ends of the grooves 51 in the column body 50.

The opposing member 40 is attached to the column 50 by inserting bolts 44 into the holes 41f and 42d, screwing nuts 45 onto the threaded shafts 44a of the bolts 44, and clamping the column 50 between the opposing member body 41 and the clamping pieces 42.

In addition, in this embodiment, as shown in FIG. 7, the hole 42d provided in the clamping piece 42 is formed in a square shape. The bolt 44 has a square fitting portion 44c between the head 44b and the screw shaft 44a that matches the hole 42d of the clamping piece 42, and when the bolt 44 is inserted, the fitting portion 44c fits into the hole 44e, preventing the bolt 44 from rotating around its axis. Therefore, when the nut 45 is screwed onto the screw shaft 44a of the bolt 44, the bolt 44 does not rotate around its axis. However, the above-mentioned rotation prevention mechanism may be omitted, and the bolt 44 may be another screw that does not have the fitting portion 44c.

Next, as shown in FIG. 8, the handle member 2 of this embodiment is attached to the vertical frame member 11a on the pillar 50 side of the door 10C so that the handle portion 2b is located at the left side end of the base portion 2a, which is the side opposite the pillar. Also, the socket 4 that holds the lock piece 6 is provided on the surface of the handle portion 2b facing the pillar 50.

The handle member 2 may be attached to the vertical frame member 11a of the door 10C so that the handle portion 2b is located at the right side end of the base 2a on the pillar 50 side in FIG. 8. However, as in this embodiment, when the handle member 2 is attached to the vertical frame member 11a of the door 10C so that the handle portion 2b is located at the left side end of the base 2a in FIG. 8, as shown in FIG. 8, when the door 10C is closed, the base 2a overlaps the pillar 50 from front to back in the depth direction, so no gap is created between the door 10C and the pillar 50.

Next, the locking operation of the single-leaf door 10C using the door lock device 1A of the second embodiment will be described in detail. First, the door 10C is slid in the closing direction (to the right in Figs. 7 and 8) until the socket 4 faces the insertion portion 43. At this time, although not shown, the pin portion 6b of the lock piece 6 is positioned on the opposite side of the opposing member 40 across the handle portion 2b so that the pin portion 6b does not interfere with the opposing member 40 when the door 10C is closed.

Next, with the door 10C closed until the socket 4 faces the insertion portion 43, the lock piece 6 is pulled up and then rotated toward the opposing member 40 to insert the pin portion 6b into the insertion portion 43.

Then, since the movement direction of the lock piece 6 is up and down while the movement direction of the door 10C is left and right, the movement directions of the lock piece 6 and the door 10C do not match. Therefore, even if the door 10C tries to slide open in the opening direction (leftward in Figures 7 and 8), the lock piece 6 restricts the movement of the door 10C, so the door 10C will not open. In other words, when the pin portion 6b is inserted into the insertion portion 43, the door lock device 1A is in a locked state.

In this embodiment, the door 10C is a sliding door, but the door 10C may be a hinged door. Even if the door 10C is a hinged door, the direction of movement of the lock piece 6 does not match the direction of movement of the door 10C, so the door 10C can be locked in the closed state.

As described above, in the door lock device 1A of the second embodiment, the opposing member 40 is provided on the pillar body 50 that faces the door 10C when the door 10C closes the opening O. With this configuration, the door 10C can be locked even when the door 10C of the greenhouse H is in a single-opening state.

The configuration of the opposing member 40 in the second embodiment described above is merely an example, and is not particularly limited as long as it has an insertion portion 43 and can be attached to the column body 50. For example, as in the opposing member 40A shown in Figures 9 and 10, the insertion portion 43A may be configured with a cut-and-raised piece 41g formed by cutting and raising a part of the tip side of the inner plate portion 41b along the extension direction of the inner plate portion 41b, and an insertion hole 41h that passes through the cut-and-raised piece 41g, and the lock piece 6 may be inserted and removed into the insertion hole 41h.

In addition, when the column 50A is cylindrical, the opposing member 40B may be, for example, as shown in Figures 11 and 12, a pair of holding pieces 40Ba, 40Ba that curve along the outer periphery of the column 50A, a U-shaped cross-sectional insertion portion 40Bb that connects one end of each holding piece 40Ba, 40Ba, and a plate piece 40Bc that protrudes from the other end of each holding piece 40Ba, 40Ba and has holes 40Bd that face each other.

According to this configuration, the gap between the pair of plate pieces 40Bc, 40Bc is widened, the column body 50A is inserted between the pair of holding pieces 40Ba, 40Ba through the gap, and while the holding pieces 40Ba, 40Ba are holding the column body 50A, a bolt 70 is inserted into the hole 40Bd of each plate piece 40Bc, 40Bc, and the bolt is tightened from the opposite side with a nut 71, thereby attaching the opposing member 40B to the cylindrical column body 50A. Furthermore, in the opposing member 40B of this embodiment, the lock piece 6 can be inserted and removed from the insertion portion 40Bb.

In addition, when the column 50B is a rectangular column, the opposing member 40C may, for example, be provided with a pair of left and right fixing plate portions 40Ca, 40Ca that abut against the outer periphery of the column 50B, face each other, and have holes 40Cb, as shown in FIG. 13, and a U-shaped cross-sectional insertion portion 40Cc that connects the opposing ends of the pair of fixing plate portions 40Ca, 40Ca.

With this configuration, the opposing member 40C can be attached to the rectangular column-shaped column 50B by screwing the screw 80 into the column 50B through the hole 40Cb of each of the fixing plate parts 40Ca, 40Ca while the pair of fixing plate parts 40Ca, 40Ca is in contact with the surface of the column 50B facing the opening O. Furthermore, in the opposing member 40C of this embodiment, the lock piece 6 can be inserted and removed from the insertion part 40Cc.

In addition, in Figures 7 to 10, the door sheet S3 inserted into the groove 12 of the vertical frame material 11a of the door 10C and the spring 13 that secures the door sheet S3 to the vertical frame material 11a are omitted for ease of understanding.

The above describes in detail the preferred embodiment of the present invention, but it is understood that modifications, variations and changes can be made without departing from the scope of the claims.

Reference Signs List 1, 1A...door lock device, 2...handle member, 2a...base, 2b...handle portion, 3, 40, 40A, 40B, 40C...opposing member, 3a...base, 3b...handle portion, 4...socket, 5, 43, 43A, 40Bb, 40Cc...insertion portion, 6...lock piece, 6a...rod portion, 6b...pin portion, 6c...connection portion, 10A, 10C...door, 10B...opposing door, 15...stopper, 50, 50A, 50B...column body, H...vinyl house, O...opening

Claims (10)

A door lock device for locking a door in a closed state in a vinyl greenhouse having an opening and a door for opening and closing the opening,
A handle member attached to a surface of the door facing the outside of the vinyl greenhouse;
A lock piece is held by the handle member so as to be movable in the axial direction around an axis in a direction not coinciding with the moving direction of the door and to be rotatable around the axis;
a counter member that is attached to a position facing the handle member of the vinyl greenhouse when the door is closed and has an insertion portion into which the lock piece can be inserted and removed. The handle member has a cylindrical socket,
the lock piece has a rod portion that is inserted into the socket so as to be axially movable and rotatable, a pin portion that is arranged parallel to the rod portion and can be inserted into and removed from the insertion portion, and a connecting portion that connects one end of the rod portion and one end of the pin portion to each other,
The door lock device according to claim 1 , wherein the axial length of the rod portion is longer than the axial length of the pin portion. an axial length of the rod portion is longer than a sum of axial lengths of the socket and the pin portion,
The door lock device according to claim 2, further comprising a stopper detachably provided on the other end of the rod portion and capable of abutting against an end of the socket. The door lock device according to claim 2 or 3, wherein the connecting portion is U-shaped and the lock piece is J-shaped. The socket extends in a vertical direction,
The door lock device according to any one of claims 2 to 4, wherein the lock piece is inserted into and removed from the insertion portion from above. The handle member has a base portion fixed to the door and a flat handle portion extending from the base portion toward the opposite side to the door,
The door lock device according to any one of claims 2 to 5, wherein the socket is disposed closer to the base portion than half of the length of the handle portion in the extension direction. The door lock device according to any one of claims 2 to 6, characterized in that the opposing member has a cylindrical insertion portion into which the lock piece can be inserted and removed, and has the same shape as the handle member. The door lock device according to claim 7, wherein the pin portion has an axial length set so that the pin portion can be inserted at least halfway into the insertion portion. The door lock device according to any one of claims 1 to 8, wherein the opposing member is provided on a counterpart door that is paired with the door and is capable of opening and closing the opening together with the door. The door lock device according to any one of claims 1 to 6 , wherein the opposing member is provided on a pillar that faces the door when the door closes the opening.

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