JP7585157B2 - Door lock structure for intrusion prevention fence and intrusion prevention fence using the same - Google Patents

Description

The present invention relates to a locking structure for a door installed in an intrusion prevention fence and an intrusion prevention fence using the same.

In some cases, intrusion control fences may be installed to prevent pets and small children from entering certain areas such as kitchens and hallways.
By equipping part of this intrusion prevention fence with an openable door, people can pass through the door even when the fence is installed.
Furthermore, by providing a locking mechanism on the door, it is possible to prevent the door from being opened unintentionally by pets or the like.

For example, the safety fence disclosed in Patent Document 1 positions a first door and a second door, which are rotatably supported on a door frame, in a closed state using a positioning magnet, and locks both doors by engaging a locking member (latching member) provided at the upper end of the second door with the upper end of the first door.
The safety fence disclosed in this publication allows a user to open an unlocked door by simply pushing it lightly.
However, when the door is locked, only the top end is locked, so if a pet pushes against the bottom end of the door, for example, a dangerous gap may form between the door and the bottom rail of the door frame, which could cause the pet's limbs to become caught.
Even if the bottom ends of both doors were also locked with the above-mentioned locking member, although the gap would be smaller than if only the top ends were locked, a dangerous gap would still be created between the bottom rails.

JP 2020-92781 A

The present invention aims to provide a door lock structure for an intrusion prevention fence that is less likely to cause dangerous gaps at the bottom end of the door, and an intrusion prevention fence using the same.

The door lock structure of an intrusion control fence of the present invention is a door lock structure provided on an intrusion control fence, comprising a lower bar and a first door and a second door, one or both of the first door and the second door can be opened and closed with the lower bar remaining, and has an upper locking member at the upper part between the first door and the second door for locking the first door from being opened or closed relative to each other, and a lower locking member at three points between the lower parts of the first door and the second door and the lower bar for locking the first door from being opened or closed relative to each other.
The first door and the second door are arranged side by side in the left-right direction, and may be either a double-door or a single-door.
In the case of a single-leaf door, one of the doors is a fixed panel body.
If both doors can be opened and closed, it will be easier for people and pets to pass through.
In the door lock structure according to the present invention, when the upper end side of the door is locked by the upper locking member, the lower locking member prevents the occurrence of dangerous gaps at the lower end side of the door.
For example, when a pet applies a load to the first door having a lower locking member in the locked state, the lower end of the first door abuts against the lower rail and the second door via the lower locking member and is supported.
In this way, the lower locking member simultaneously locks both doors and the bottom rail at three points, making it less likely that dangerous gaps will form at the bottom ends of the doors, and the upper locking member can also prevent gaps from forming at the top ends.
The upper locking member and the lower locking member may be provided on the same door or on different doors.

In the present invention, the lower locking member may be rotatably provided at the lower end of the one door, and in a locked state, may abut against the lower rail and the front or rear surface of the other door.
In addition, the lower locking member has a pair of interlocking front and rear locking pieces, which are rotatably provided at the lower end of one of the doors and may abut against the front and/or rear surfaces of the lower rail and the other door, respectively, in the locked state.
When the lower locking member is rotatably provided on one of the doors in this manner, the tip of the lower locking member can be stored so that it does not come into contact with the bottom rail or the other door, and the lower locking member does not get in the way when the doors are opened or closed.
Since the upper ends of both doors are locked by the upper locking member, the lower locking member may abut against one side of the lower rail and the other door, but if a pair of front and rear locking pieces sandwich the lower rail and the other door and abut against both sides, gaps at the bottom ends of the doors can be more effectively prevented.
Furthermore, the pair of front locking pieces and rear locking pieces work together, so that the lower locking member can be operated from either side in the travel direction (front-rear direction).
In this specification, the term "one door" refers to either the first or second door in the case of a double-door, and in the case of a single-door, one of the doors may be a fixed panel body.

One aspect of the present invention is an intrusion prevention fence that is characterized by having the above-mentioned door lock structure.
The intrusion control fence of the present invention has an upper locking member that is rotatably attached to the upper end of one of the doors and has a pair of oppositely arranged front and rear regulating pieces, and in the unlocked state, the upper end of the vertical frame of the door is inserted between the front and rear regulating pieces, and in the locked state, the upper frame end of the other door is inserted between the front and rear regulating pieces.
In addition, it is preferable that the upper locking member is held by a holding member provided at the upper end of the vertical frame in the unlocked state.
For example, both doors can be locked by fitting the end of the upper frame of one door to the inside of an upper locking member having a generally U-shaped cross section provided at the upper end of the other door.
When both doors are not locked, the upper locking member is rotated and the upper end of the vertical frame of the door having the upper locking member is inserted and fitted inside, so that the upper locking member is less likely to get in the way when passing through, etc.
Furthermore, if the fitted state between the upper locking member and the vertical frame is maintained by a retaining member made of a non-slip material such as rubber, it is easy to prevent the upper locking member from wobbling.
The retaining member may be provided only on the front surface or rear surface of the upper end of the vertical frame.
For example, if there is a pet in front of the intrusion prevention fence, if there is a retaining member only on the rear surface of the upper end of the vertical frame, the risk of the pet playing with the retaining member can be reduced.

The door lock structure of the intrusion control fence of the present invention has a lower locking member that simultaneously locks both doors and the bottom rail at three points, so that dangerous gaps are less likely to occur at the bottom end of the door, for example, if a pet applies a load to the door in a locked state.
Furthermore, an intrusion control fence equipped with such a door lock structure not only achieves the purpose of preventing the intrusion of pets and the like, but also provides excellent safety.

1 shows an example of the structure of an intrusion prevention fence according to the present invention. 1 as viewed from the front, and FIG. 4B shows an example of an unlocked state. 1 as viewed from the rear, and FIG. 4B shows an example of an unlocked state. 1 as viewed from above, and FIG. 2(b) as viewed from the right side. An example of the open door state is shown. 1A shows an example of the structure of an upper locking member, FIG. 1B shows an example of the structure of a lower locking member, and FIG. 1C shows another example of the structure of the lower locking member. 4A and 4B show enlarged views of the upper locking member and its vicinity, in which (a) and (b) show examples of an unlocked state, and (c) shows an example of a locked state. 4A and 4B show enlarged views of the vicinity of a lower locking member, in which (a) and (b) show an example of an unlocked state, and (c) shows an example of a locked state. 1A and 1B are enlarged partial views of the lower locking member, the lower rail and the vicinity of the lower frame of the second door, in which (a) shows an example of the state before a load is applied to the door, and (b) shows an example of the state when a load is applied to the door. 4 shows another example of the structure of the intrusion prevention fence according to the present invention.

The intrusion control fence of the present invention is used to restrict the passage of, for example, pet animals or the entry of small children, and is provided with a door equipped with a locking mechanism to allow people to pass through as necessary.
In the following, as this embodiment, we will explain an example of a control fence that can be folded into an approximately C-shape or an approximately L-shape and is self-supporting, but the intrusion control fence of the present invention may also be one that is fixed to an aisle or an indoor opening, or a type of control fence that surrounds it on all four sides like a pet circle.
For ease of explanation, this embodiment is illustrated as an example in which the fence is installed to separate an aisle between passages, with the inside of the roughly U-shaped fence being the rear side as shown in Figure 1, preventing pet animals in front of the fence from entering the rear side, but the present invention is not limited to this.

Figures 1 to 5 show examples of the structure of intrusion prevention fences.
The intrusion prevention fence of this embodiment comprises a front panel having a first door 11 and a second door 12, and rotatable side panels 41, 41 on both sides of the front panel, as shown in FIG.
The front panel has a lower rail 13 and vertical rails 14, 14 standing upright from both ends thereof.
In this embodiment, the first door 11 is attached via a pivot shaft provided on one side of the vertical bars 14, and the second door 12 is attached via a pivot shaft provided on the other side of the vertical bars 14, and this is an example in which the first and second doors 11, 12 can be opened from both sides, but the present invention can also be applied to a single-door type in which only one of the first and second doors can be opened or closed.
In this specification, in the case of an openable/closable door, the open end side is referred to as the tip (side) and the pivot shaft side is referred to as the base (side).
A support member 15 is attached to the vertical rail 14 so that the rail can be set up independently. In this embodiment, the support member 15 is connected to the lower rail 13 and extends only forward in a direction perpendicular to the lower rail 13 .
The side panel 41 is rotatably connected to the vertical beam 14 of the front panel via pivot devices 42, 43, and the side panel, which is supported by the pivot devices at the top and bottom, rotates relative to the front panel.
In this embodiment, grounding members 16a, 16b, and 16c are attached to the lower end of the tip of the support member 15 and to the lower ends of the lower frame 41a of the side panel 41, but there are no particular restrictions on the attachment positions of the grounding members, and the grounding members may be absent.
An upper locking member 20 and a lower locking member 30 are attached to the upper and lower ends of the first door 11 so as to be rotatable in the vertical direction, respectively. By operating these locking members, the opening and closing of both doors can be switched between a locked state and an unlocked state.
Although this embodiment is an example in which the locking members are attached to the first door, they may be attached to the second door.

The first door 11 has, for example, a lower frame 11a, an upper frame 11b, and a vertical frame 11c connecting the leading ends thereof as shown in FIG. 2(a), and a plurality of wires 11d are arranged inside the frame body.
The lower frame 11a and the upper frame 11b have through holes at their tip ends for mounting the lower locking member 30 and the upper locking member 20, respectively.
On the other hand, the base sides of the lower frame 11a and the upper frame 11b are pivotally mounted so that the lower frame 11a is rotatably connected to the lower rail 13 via a shaft support portion 17, and the upper frame 11b is pivotally mounted to the vertical rail 14 via a rotation support device (receiving portion 18, rotating portion 19).
This allows the first door 11 to be opened backward, for example, as shown in FIG.
There is no particular limitation on the structure of the rotation support device.
For example, the rotation support device may be configured such that a pivot shaft protruding upward from within the receiving portion 18 on the vertical rail 14 side is inserted into the rotating portion 19 on the upper frame 11b side to serve as the rotation shaft.
On the other hand, as shown in FIG. 2(b), the second door 12 has a lower frame 12a, an upper frame 12b, and a vertical frame 12c connecting the leading ends thereof, with a plurality of wires 12d arranged inside this frame.
In addition, the base sides of the lower frame 12a and the upper frame 12b are pivotally attached to the lower rail 13 and the vertical rail 14 via the pivot support portion 17 and the rotation support device (receiving portion 18, rotating portion 19), respectively, so that the second door 12 can be opened rearward as shown in Figure 5.
In addition, this second door 12 may be a fixed panel body whose base side is connected and fixed to the vertical bar 14 side.

FIG. 6A shows an example of the structure of the upper locking member 20 in this embodiment, and FIG. 7 shows an enlarged view of the vicinity of the upper locking member 20 attached to the first door of the intrusion prevention fence.
As shown in FIG. 6A, the upper locking member 20 has a pair of substantially rectangular front and rear restricting pieces 21 and 22 arranged opposite each other.
The pair of front and rear regulating pieces are partially connected by a connecting portion 23 so that a predetermined gap D1 can be formed between the front regulating piece 21 and the rear regulating piece 22 so that the upper frame and vertical frame can be placed between them as described below.
The front restricting piece 21, the rear restricting piece 22 and the connecting portion 23 may be integrally formed.
The upper locking member 20 is attached to the first door (upper frame 11b) by inserting the tip end of the upper frame 11b into the gap D1 so that the mounting holes 21a, 22a and the through holes provided in the upper frame 11b are aligned, and the shaft member 24 is inserted into the through hole and the mounting hole to attach it so that it can rotate freely.
The switching of the upper locking member 20 between the locked state and the unlocked state will be described with reference to FIG.
First, to explain the locked state, as shown in Figure 7 (c), the upper locking member 20 which is rotatably attached to the upper frame 11b of the first door rotates toward the second door so that the upper frame 12b of the second door fits into the gap D1 provided between the front regulating piece 21 and the rear regulating piece 22.
In this case, the connecting portion 23 is provided at the upper part on the outer side of the pair of front and rear restricting pieces 21, 22 when rotated in the locking direction so that the connecting portion 23 is located at the upper side in the locked state.
This causes the connecting portion 23 to be held in contact with the upper surface of the upper frame 12b of the second door, maintaining the locked state.
Next, the unlocked state will be described with reference to FIGS.
To release the lock, the tip of the upper locking member 20 is rotated from the state shown in Figure 7 (c) so as to disengage from the upper frame 12b of the second door, and then either the first door 11 or the second door 12, or both, are opened.
Then, the tip side of the upper locking member 20 rotates under its own weight, and the vertical frame 11c of the first door is held hanging down so that it fits into the gap D1 between the front regulating piece 21 and the rear regulating piece 22, as shown in Figure 7 (a).
This prevents the upper locking member 20 from interfering with opening and closing of the first and second doors.
As shown in Figs. 3(a) and 3(b), a retaining member 11e made of rubber or the like may be provided on the rear surface of the upper end of the vertical frame 11c of the first door.
In this way, when the upper locking member 20 is in an unlocked state, the retaining member 11e is sandwiched between the vertical frame 11c and the rear regulating piece 22, thereby preventing wobbling.

An example of the structure of the lower locking member 30 in this embodiment is shown in FIG.
8 and 9 are enlarged views of the vicinity of the lower locking member 30 attached to the first door of the intrusion prevention fence.
As shown in FIG. 6B, the lower locking member 30 has a pair of generally L-shaped front locking pieces 31 and rear locking pieces 32 .
The front lock piece 31 and the rear lock piece 32 face each other in the front-rear direction with a gap D2 therebetween, and mounting holes 31a, 32a provided at approximately the corners penetrate the front-rear direction.
In addition, the front locking piece 31 and the rear locking piece 32 each have a lower rail regulating piece 31b, 32b and a lower frame regulating piece 31c, 32c, and one opposing side of the lower rail regulating piece 31b, 32b is partially connected by a connecting portion 33 near the mounting holes 31a, 32a.
As shown in Figures 8(a) to 8(c), the bottom frames 11a, 12a and the bottom rail 13 of the first and second doors can be inserted into the gap D2.
The lower locking member 30 is attached to the first door (lower frame 11a) by inserting the tip end of the lower frame 11a into the gap D2 so that the mounting holes 31a, 32a are aligned with the through holes provided in the lower frame 11a.
At this time, the connecting portion 33 is disposed so as to be inside the rotation track of the lower locking member when unlocked and abut against the vertical frame 11c, and the shaft member 34 is inserted into the mounting hole and through hole to be rotatably attached.
This allows the lower locking member 30 to be rotatably attached to the tip side of the lower frame 11a of the first door.
FIG. 6C shows another example of the structure of the lower locking member 30, which may be composed of only the front locking piece 31 or the rear locking piece 32.

The switching between the locked state and the unlocked state of the lower locking member 30 will be described with reference to FIG.
8(a) and (b) show the unlocked state, and FIG. 8(c) shows the locked state after the lower locking member 30 has been rotated.
First, the locked state will be described with reference to FIG.
The lower locking member 30 is partially connected by a connecting portion 33 so that a predetermined gap D2 is formed between a pair of opposing front locking pieces 31 and rear locking pieces 32. Therefore, when the lower locking member 30 is rotated toward the second door 12, the lower rail 13 fits between the pair of lower rail regulating pieces 31b, 32b.
In addition, the bottom frame 12a of the second door is fitted between the pair of bottom frame regulating pieces 31c, 32c.
At this time, the connecting portion 33 abuts against the lower surface of the lower frame 11a of the first door, so that this locked state is maintained.
As a result, the lower locking member 30 locks the lower frame 11a of the first door, the lower frame 12a of the second door, and the lower rail 13 to each other at three points.
This reduces the risk of dangerous gaps occurring between the doors on both sides and the bottom rail, which was previously a problem.
This state will be explained with reference to FIG. 9. For example, when a pet animal applies force to the door of the intrusion prevention fence, the state shown in FIG. 9(a) changes to the state shown in FIG. 9(b).
For example, when force is applied to the second door, the rear surface of the bottom frame 12a of the second door abuts against the rear locking piece 32 of the lower locking member, and the front surface of the lower rail 13 abuts against the front locking piece 31.
When force is applied to the first door, the opposite happens to the above, but in any case, it is locked at three points, making it less likely that dangerous gaps will form as in the past.
Next, the unlocked state of the lower locking member 30 will be described with reference to FIGS.
The lower locking member 30 is rotated toward the base side of the first door.
Then, the vertical frame 11c of the first door fits between the lower rail regulating pieces 31b, 32b that were located on the lower rail 13, and the lower frame 11a of the first door fits between the lower frame regulating pieces 31c, 32c that were located on the lower frame 12a of the second door.
This unlocked state is maintained by the connecting portion 33 abutting against the side surface of the vertical frame 11c of the first door.
In this manner, in the unlocked state, the lower locking member 30 is stored on the first door side, so that it does not impede passage.
Furthermore, if the lower locking member 30 is composed only of the front locking piece 31 as shown in Figure 6 (c) and is attached to the front surface of the bottom frame 11a of the first door, when a load is applied to the doors as described above, the upper ends of both doors are locked by the upper locking member, so that the front locking piece 31 abuts against the front surface of the lower rail 13 and the front surface of the bottom frame 12a of the second door, respectively.
This prevents dangerous gaps from occurring at the bottom of the door.

FIG. 10 shows another example of the structure of the intrusion prevention fence.
The intrusion control fence in this embodiment is an example in which the front panel has extensions 51, 51 on both sides of the first and second doors 11, 12, and the side panel 41 is rotatably connected to the vertical bar 52 of the extension 51 via a pivot device, and a support member 53 is connected to the vertical bar 52.
Although this embodiment is an example in which the door is provided in the center of the front panel, the door may be provided on the side of the front panel.

11 First door 11a Lower frame 11b Upper frame 11c Vertical frame 12 Second door 12a Lower frame 12b Upper frame 12c Vertical frame 13 Lower rail 14 Vertical rail 20 Upper locking member 30 Lower locking member 31 Front locking piece 32 Rear locking piece

Claims (6)

A lock structure for a door installed in an intrusion prevention fence,
A lower rail, a first door, and a second door,
One or both of the first door and the second door can be opened and closed with the lower rail remaining,
an upper locking member is provided at an upper portion between the first door and the second door to lock the first door from being opened or closed;
A door lock structure for an intrusion prevention fence, characterized in that it has a lower locking member that locks the opening and closing of the first and second doors at three points: the bottom of the first and second doors and the lower rail. The door lock structure of the intrusion prevention fence according to claim 1, characterized in that the lower locking member is rotatably attached to the lower end of one of the doors, and in the locked state, it abuts against the lower rail and the front or rear surface of the other door, respectively. The lower locking member has a pair of interlocking front and rear locking pieces,
The door lock structure of an intrusion prevention fence as described in claim 1, characterized in that the pair of front and rear locking pieces are rotatably mounted on the lower end of one of the doors, and when locked, they abut against the front and/or rear surfaces of the lower rail and the other door, respectively. An intrusion prevention fence comprising a door lock structure according to any one of claims 1 to 3. The upper locking member is rotatably attached to the upper end of the one door and has a pair of front and rear regulating pieces disposed opposite to each other,
In the unlocked state, the upper end of the vertical frame of the door is inserted between the front and rear regulating pieces,
An intrusion prevention fence as claimed in claim 4, characterized in that in the locked state, the upper frame end of the other door is inserted between the front and rear regulating pieces. An intrusion prevention fence as described in claim 5, characterized in that the upper locking member is held by a holding member provided at the upper end of the vertical frame in an unlocked state.

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