JP2006161360A - Door guard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door guard capable of easily holding a half-open state and preventing a door from being easily opened even if a door lock such as a cylinder lock is illegally unlocked. <P>SOLUTION: In a state of engaging a locking shaft 8 to a stopper part 18, an opening/closing regulating member 10 is turned into a rising position to dispose an opening engaging recess 23 on the insertion/removal part 19 side with respect to the locking shaft 8. The opening engaging recess 23 and the locking shaft 8 are thereby engaged to hold the door in the engaged position. In the totally closed state of the door, the opening/closing regulating member 10 and the arm member 9 are turned into the rising position. The head 12 of the locking shaft 8 passes through the insertion/removal part 19 and the locking engagement hole 22. Consequently, even if trying to open the door, the locking engagement hole 22 of the opening/closing regulating member 10 and the locking shaft 8 are engaged before the locking shaft 8 is guided by a guide part 17. The door cannot thereby be opened. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a door guard.

Conventionally, various door guards composed of a door guard arm that is rotatably connected to the door for opening and a locking shaft that is connected to the vertical frame of the doorway have been proposed (for example, patents). Literature 1, Patent Literature 2). These door guards are used when the door can be opened a little and the visitor is confirmed safely. In addition, when it is desired to make the door half open for ventilation in the room, the door guard may be half opened to prevent the door from opening more than necessary for security purposes.
JP2004-19135 JP 2003-314121 A

  However, when the door is opened halfway using the door guard for indoor ventilation, etc., the door will not be opened any further by the door guard, but the door is provided with a door closer. But it closes with the door closer. Therefore, the stopper member is placed on the floor and engaged with the door so that the door does not close. Therefore, the stopper member is required and the appearance is not good. Further, the stopper member is easy to come off and has to be redone each time. Further, since the stopper member is placed on the floor, there is a problem that the floor is damaged. Moreover, since the stopper member is a single article, when it is not used, it must be placed in a place where it does not interfere with the opening and closing of the door.

  In addition, even when a door with a door guard is attached, if the cylinder lock is unlocked illegally, the door guard can prevent the door from being fully opened, but the door is not open. Therefore, even a door with a door guard attached is desired to be a door that is more perfect and safe for crime prevention.

In order to solve the above-described problems, an object of the present invention is to provide a door guard that can be easily and easily held in a half-open state.
Another object is to provide a door guard that does not easily open the door even if a door lock such as a cylinder lock is illegally unlocked.

  According to the first aspect of the present invention, there is provided an arm member that is pivotably attached to either the door or the entrance / exit frame, and an arm member that is attached to the other and abuts against a stopper portion of the arm member to bring the door into a first open position. A locking shaft that opens to the door, and with the opening operation of the door, the locking shaft moves relative to the arm member along a guide portion formed on the arm member and contacts the stopper portion, In the door guard that restricts the opening operation of the door beyond the open position of 1, the arm member is engaged with the locking shaft and provided between the fully closed position of the door and the first open position. An opening / closing restricting member having a first engaging portion for holding the door open at a second open position is provided.

According to a second aspect of the present invention, in the door guard according to the first aspect, the opening / closing regulating member is attached to a support member of the arm member so as to be rotatable in the same direction as the arm member, and overlaps the arm member. A first engagement portion is provided that engages with the locking shaft that moves relative to the guide portion of the arm member and that is held open at the second open position.

  According to a third aspect of the present invention, in the door guard according to the first aspect, the opening / closing regulating member is pivotably attached to the arm member, and overlaps the arm member to form a guide portion of the arm member. A first engagement portion is provided that engages with the locking shaft that relatively moves along the first engagement portion and is held open at the second open position.

According to a fourth aspect of the present invention, in the door guard according to the first aspect, the opening / closing regulating member is integrally formed with the arm member in parallel with the guide portion of the arm member,
A protrusion that engages with the first engaging portion provided on the opening / closing regulating member is provided at a position adjacent to the locking shaft so as to be able to appear and retract.

According to a fifth aspect of the present invention, there is provided an arm member that is pivotally attached to either the door or the entrance / exit frame, and an arm member that is attached to the other and abuts against a stopper portion of the arm member to bring the door into a first open position. And the locking shaft moves relative to the arm member along a guide portion formed on the arm member along with the opening operation of the door, and comes into contact with the stopper portion. In the door guard that regulates the opening operation of the door beyond the open position of
A door guard comprising an opening / closing regulating member having a second engagement portion that engages with the locking shaft and holds the door in a fully closed position of the door.

  According to a sixth aspect of the present invention, in the door guard according to the fifth aspect, the opening / closing regulating member is attached to a support member of the arm member so as to be rotatable in the same direction as the arm member, and overlaps the arm member. A second engagement portion is provided that engages with the locking shaft that is relatively moved along the guide portion of the arm member and holds the locking shaft in the fully closed position.

  According to a seventh aspect of the present invention, in the door guard according to the sixth aspect, the opening / closing regulating member is pivotably attached to the arm member, and overlaps the arm member to form a guide portion of the arm member. A second engagement portion is provided that engages with the locking shaft that relatively moves along and is held in the fully closed position.

  The invention according to claim 8 is an arm member that is pivotally attached to either the door or the entrance / exit frame, and a door that is attached to the other and abuts against a stopper portion of the arm member to open the door in the first open position. A locking shaft that opens to the door, and with the opening operation of the door, the locking shaft moves relative to the arm member along a guide portion formed on the arm member and contacts the stopper portion, In a door guard that restricts the opening operation of the door beyond the first opening position, a second opening position that engages with the locking shaft and is provided between the fully closed position of the door and the first opening position. An opening / closing restricting member having a first engaging portion for holding the door and a second engaging portion for holding the door at a fully closed position of the door is provided.

The invention according to claim 9 is the door guard according to claim 8, wherein the opening / closing regulating member is attached to the support member of the arm member so as to be rotatable in the same direction as the arm member.
According to a tenth aspect of the present invention, in the door guard according to the eighth aspect, the opening / closing regulating member is rotatably attached to the arm member.

  According to an eleventh aspect of the present invention, in the door guard according to any one of the first to tenth aspects, the opening / closing regulating member is formed with an operation piece having a length protruding from the distal end of the arm member at a distal end portion thereof.

According to the first aspect of the present invention, the second opening provided between the fully closed position and the first open position of the door can be achieved simply by engaging the first engaging portion of the opening / closing regulating member with the locking shaft. The door can be held open in position. Therefore, the door can be held in a half-open state for ventilation or the like.

  According to the second aspect of the present invention, the opening / closing regulating member is attached so as to be rotatable in the same direction as the arm member with respect to the supporting member of the arm member so as to be rotatable in the same direction as the arm member. Only by rotating the member, the engagement and disengagement of the first engaging portion provided on the opening / closing regulating member with respect to the locking shaft can be performed with a very simple operation. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

  According to the invention of claim 3, since the opening / closing regulating member is pivotably attached to the arm member, the first engagement provided on the opening / closing regulating member only by rotating the opening / closing regulating member. The part can be disengaged from the locking shaft with a very simple operation. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

According to the fourth aspect of the present invention, the door can be held open at the second open position provided between the fully closed position of the door and the first open position only by operating the locking projection. .
According to the invention of claim 5, the door can be held in the fully closed position only by engaging the second engagement portion of the opening / closing regulating member with the locking shaft. Therefore, even if the door is unlocked illegally, the door does not open due to the engagement between the opening / closing regulating member provided on the door guard and the locking shaft.

  According to the invention of claim 6, the opening / closing regulating member is attached so as to be rotatable in the same direction as the arm member with respect to the supporting member of the arm member so as to be rotatable in the same direction as the arm member. Only by rotating the member, the engagement and disengagement of the second engagement portion provided on the opening / closing regulating member with respect to the locking shaft can be performed with a very simple operation. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

  According to the seventh aspect of the present invention, since the opening / closing regulating member is pivotably attached to the arm member, the opening / closing regulating member only rotates and the second engagement provided on the opening / closing regulating member. The part can be disengaged from the locking shaft with a very simple operation. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

  According to the eighth aspect of the present invention, the door is held in the second open position or the fully closed position only by engaging the first engagement portion or the second engagement portion of the opening / closing regulating member with the locking shaft. Can do. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

  According to the ninth aspect of the present invention, the opening / closing regulating member is attached so as to be rotatable in the same direction as the arm member with respect to the supporting member of the arm member so as to be rotatable in the same direction as the arm member. Only by rotating the member, the engagement and disengagement of the first engagement portion and the second engagement portion provided on the opening / closing regulating member with respect to the locking shaft can be performed with a very simple operation. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

  According to the invention of claim 10, since the opening / closing regulating member is pivotably attached to the arm member, the first engagement provided on the opening / closing regulating member only by rotating the opening / closing regulating member. The engagement and disengagement of the part and the second engaging part with respect to the locking shaft can be performed with a very simple operation. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

According to the eleventh aspect of the present invention, the opening / closing regulating member can be rotated safely and easily without being interrupted by the arm member.

(First embodiment)
Hereinafter, a first embodiment of the door guard of the present invention will be described with reference to FIGS. FIG. 1 is a front view of an outward opening door as viewed from the inside, and FIG. 2 is a perspective view of a door guard provided on the door.

  In FIG. 1, the door 1 is provided so as to be openable and closable with a hinge (not shown) with respect to the entrance / exit frame 2. The door 1 is a door for opening outward, and a door closer 3 is provided between an upper portion of an inner side surface 1 a (inner side surface) and a horizontal frame 2 a of the entrance / exit frame 2, and is opened by the door closer 3. The door 1 is rotated in the fully closed direction so as to be fully closed. A thumb turn 5 and a lever handle 6 projecting from a lock case 4 provided in the door 1 are provided on the inner side surface 1 a of the door 1. A door guard 7 is provided between the door 1 and the entrance / exit frame 2.

  As shown in FIG. 2, the door guard 7 has a locking shaft 8, an arm member 9, and an opening / closing regulating member 10. The locking shaft 8 is provided on the vertical frame 2b (see FIG. 1) of the entrance / exit frame 2, and the arm member 9 and the opening / closing regulating member 10 are provided on the door 1 side. As shown in FIG. 2, the metallic locking shaft 8 such as brass has a mounting plate 11 at the base end. Then, by attaching and fixing the attachment plate 11 to the vertical frame 2b with screws B1, the locking shaft 8 is fixed to the vertical frame 2b. At this time, when the door 1 is in the fully closed position, the locking shaft 8 fixed to the vertical frame 2b is on the indoor side of the inner side surface 1a, and is parallel to the inner side surface 1a of the door 1 in the horizontal direction. It extends to become. The locking shaft 8 is a cylinder, and a head 12 having an outer diameter larger than the outer diameter of the locking shaft 8 is formed at the tip.

  The arm member 9 is made of a metal such as brass and is formed in a U-shape, and both base end portions of the upper arm portion 9a and the lower arm portion 9b rotate with respect to the inner side surface 1a of the door 1. It is attached as possible. More specifically, the upper arm portion of the arm member 9 with respect to the support shaft 16 as the support member attached to the pair of upper and lower bearing pieces 14 formed on the mounting plate 13 fixed to the inner surface 1a with screws B2. Both base end portions of 9a and lower arm portion 9b are rotatably supported. The arm member 9 is shown in FIG. 2 from a position (hereinafter referred to as a standing position) perpendicular to the inner surface 1a with respect to the support shaft 16 (parallel to the mounting surface of the mounting plate 11 of the vertical frame 2b when fully closed). It rotates horizontally between positions parallel to the side surface 1a (hereinafter referred to as prone positions).

  The arm member 9 is connected to the distal end portions of the upper arm portion 9a and the lower arm portion 9b and extends to the proximal end side, and guides a space extending in the length direction between the upper arm portion 9a and the lower arm portion 9b. This is part 17. A terminal portion where the upper arm portion 9a of the guide portion 17 and the distal end portion of the lower arm portion 9b are connected is used as a stopper portion 18. The vertical distance between the guide parts 17 (the distance between the lower side of the upper arm part 9 a and the upper side of the lower arm part 9 b) is larger than the outer diameter of the locking shaft 8 and smaller than the outer diameter of the head 12. Is formed.

The proximal end side of the guide portion 17 is formed so as to be widened so that the vertical interval thereof is larger than the outer diameter of the head 12 of the locking shaft 8. It is said.
When the arm member 9 is turned from the prone position to the standing position when the door 1 is in the fully closed position, the locking shaft 8 provided on the vertical frame 2b penetrates the insertion / removal portion 19 of the arm member 9. The head 12 protrudes on the opposite side of the arm member 9. When the door 1 is opened from this state, the arm member 9 moves outward together with the door 1. By this movement, the locking shaft 8 relatively moves from the insertion / removal portion 19 of the arm member 9 to the guide portion 17. Further, when the door 1 is opened and is brought into contact with the stopper portion 18 at the end portion of the locking shaft 8, further rotation of the door 1 is restricted. This restricted rotation range is determined by the length of the arm member 9 (guide portion 17). And in this embodiment, the open position of the door 1 when contacting the stopper part 18 is made into the 1st open position. Further, when the locking shaft 8 is disposed on the guide portion 17, the vertical interval of the guide portion 17 is smaller than the outer diameter of the head portion 12. Therefore, even if the arm member 9 is rotated in the prone position direction, the arm member 9 cannot be rotated because the head 12 of the locking shaft 8 is engaged with the upper arm portion 9a and the lower arm portion 9b. I can't.

  The opening / closing regulating member 10 is supported so as to be rotatable together with the arm member 9 with respect to the support shaft 16. As shown in FIG. 3, the opening / closing regulating member 10 is a metal plate such as brass. As shown in FIG. 3, the bearing pieces 21 formed on both the upper and lower sides of the base end are rotatable about the support shaft 16. It is supported. Therefore, the opening / closing regulating member 10 is rotatable between the standing position and the prone position, similarly to the arm member 9. And as shown to Fig.3 (a), (c), it can overlap with the arm member 9, or it can be made to space apart with respect to the arm member 9 as shown in FIG.3 (b).

  A locking engagement hole 22 as a second engagement portion is formed through the base end portion of the opening / closing regulating member 10. The inner diameter of the locking engagement hole 22 is formed to be larger than the outer diameter of the head 12 of the locking shaft 8. As shown in FIG. 3C, when the door 1 is in the fully closed position and the opening / closing regulating member 10 and the arm member 9 are rotated from the prone position to the standing position, the locking provided on the vertical frame 2b. The shaft 8 passes through the insertion / removal portion 19 of the arm member 9 and the locking engagement hole 22 of the opening / closing restriction member 10, and the head 12 projects to the opposite side of the opening / closing restriction member 10. Therefore, even if the door 1 is to be opened in the state shown in FIG. 3C, the locking engagement hole 22 of the opening / closing regulating member 10 and the locking shaft 8 are engaged, and the door 1 cannot be opened. It is like that.

  Further, an opening engaging recess 23 as a first engaging portion is formed through the front end portion of the opening / closing regulating member 10. Then, as shown in FIG. 3A, the door 1 is in the first open position where the locking shaft 8 abuts against the stopper portion 18 of the arm member 9, and the opening / closing regulating member 10 is overlapped with the arm member 9. When it is pivoted to the upright position, the opening engaging recess 23 is disposed on the insertion / removal portion 19 side with respect to the locking shaft 8. As a result, even if the door 1 is to be rotated from the first open position to the fully closed position, or the door 1 is to be rotated from the first open position to the fully closed position by the door closer 3, 23 and the locking shaft 8 are engaged so that the door 1 cannot be closed more than the engaged position (second open position).

  Further, an opening engaging hole 24 as a first engaging portion is formed through the intermediate portion of the opening / closing regulating member 10. When the door 1 is in an intermediate position between the first open position and the fully closed position, and the opening / closing regulating member 10 is turned to the upright position so as to overlap the arm member 9, the door 1 is engaged with the opening engagement hole 24. The head 12 of the stop shaft 8 penetrates. As a result, even if the door 1 is rotated from the intermediate position to the first open position or the fully closed position, or the door 1 is rotated from the intermediate position to the fully closed position by the door closer 3, The engagement hole 24 and the locking shaft 8 are engaged so that the door 1 cannot be opened or closed beyond the engaged position (second open position).

Next, the usage method of the door guard 7 comprised as mentioned above is demonstrated.
(Visitor confirmation)
Now, when the door 1 is in the fully closed position and only the arm member 9 is rotated from the state shown in FIG. 2 to the standing position, the locking shaft 8 passes through the insertion / removal portion 19 of the arm member 9 and the head. The part 12 protrudes on the opposite side of the arm member 9. Then, when the door 1 is opened from this state, the arm member 9 moves outward together with the door 1, and as shown in FIG. Further opening from the first open position is not possible. Therefore, the visitor can be confirmed safely.

(When opening door 1 for alerting)
As in the case of the visitor confirmation described above, the locking shaft 8 is brought into contact with the stopper portion 18 as shown in FIG. Then, as shown in FIG. 3A, the opening / closing regulating member 10 is rotated to the upright position so as to overlap the arm member 9, and the opening engaging recess 23 is inserted into and removed from the locking shaft 8. 19 side. As a result, the door 1 can be held at the engaged position (second open position) by engaging the engaging recess 23 for opening and the locking shaft 8, and for arousing while ensuring crime prevention. The door 1 can be kept open.

(When locking door 1)
With the door 1 in the fully closed position, the opening / closing regulating member 10 and the arm member 9 are rotated from the prone position to the standing position. As shown in FIG. 3C, the head 12 of the locking shaft 8 passes through the insertion / removal portion 19 of the arm member 9 and the locking engagement hole 22 of the opening / closing regulating member 10, and the opening / closing regulating member 10. Protrudes on the opposite side of the. As a result, even if the door 1 is to be opened, before the locking shaft 8 is guided by the guide portion 17, the locking engagement hole 22 of the opening / closing regulating member 10 and the locking shaft 8 are engaged, and the door 1 cannot be opened. Therefore, a double lock can be achieved together with the lock of the door 1.

Therefore, according to the above embodiment, the following effects can be obtained.
(1) In this embodiment, the door 1 is moved to the second position only by engaging the opening engaging recess 23 or the opening engaging hole 24 of the opening / closing regulating member 10 provided in the arm member 9 with the locking shaft 8. The door can be held open in the open position. Therefore, the door can be held in a half-open state for ventilation or the like.

(2) In this embodiment, since either the engagement recess 23 for opening or the engagement hole 24 for opening can be selected, the door can be changed from a half-open state to a desired half-open state for ventilation or the like.
(3) In the present embodiment, since the opening / closing regulating member 10 is rotatably provided on the support shaft 16 together with the arm member 9, the opening / closing regulating member 10 is lost as in the conventional case, and is lost and searched. There is no.

(3) In the present embodiment, the door 1 can be held in the fully closed position only by engaging the locking engagement hole 22 of the opening / closing regulating member 10 provided in the arm member 9 with the locking shaft 8. Therefore, the door 1 can be locked also by the door guard 7, and even if the door 1 is unlocked illegally, the door guard 7 can prevent entry.
(Second Embodiment)
Next, 2nd Embodiment of the door guard of this invention is described according to FIGS. In the present embodiment, differences from the door guard 7 of the first embodiment will be described in detail, and the details of the basically same configuration will be omitted for convenience of description. 4 is a perspective view of the door guard 7 as viewed from the inside of the door for outward opening, FIG. 5 is a perspective view showing a state in which only the arm member 9 of the door guard 7 is rotated in the upright position, and FIG. 7 is a perspective view showing a normal use state of the door guard 7, FIG. 7 is a perspective view showing a use state of the door guard 7 such as arousing, FIG. 8 is a perspective view showing a locked state of the door guard 7, and FIG. It is explanatory drawing explaining a mechanism.

  As shown in FIGS. 4 and 5, the arm member 9 is formed by bending a quadrangular prism rod body into a U shape, and the upper and lower arm portions 9a and 9b have the base end portions on the locking shaft 8 side. Except for this, the guide plate 17A is closed and a guide portion 17 is formed on the guide plate 17A. The arm member 9 is formed with a receiving portion 40 having the guide plate 17A on which the guide portion 17 is formed as a bottom portion and the opposite side to the guide plate 17A being open. The space on the base end side of the upper and lower arm portions 9a and 9b of the arm member 9 where the guide plate 17A is not formed is used as the insertion / removal portion 19.

  The upper and lower arm portions 9a and 9b of the arm member 9 are supported so that their base end portions can rotate with respect to support shafts 16a and 16b attached to the respective bearing pieces 14 of the mounting plate 13. . Therefore, the arm member 9 is rotatable between the standing position (see FIGS. 5 and 8) and the prone position (see FIG. 4) with the support shafts 16a and 16b as the rotation center.

  Therefore, when the door 1 is in the fully closed position and the arm member 9 is rotated to the standing position, the locking shaft 8 passes through the insertion / removal portion 19 of the arm member 9 as shown in FIG. 12 protrudes from the surface of the guide plate 17A on the side opposite to the locking shaft. Then, when the door 1 is opened from this state, the arm member 9 moves outward together with the door 1, and as shown in FIG. 6, the locking shaft 8 contacts the stopper portion 18, and the door 1 is in its contact position. Further opening from the (first open position) is not possible.

  The opening / closing regulating member 10 has a U-shaped frame body 41, and the locking shaft 8 side of the frame body 41 is the engagement plate 42 except for the base end portions of the upper frame 41 a and the lower frame 41 b of the frame body 41. Is blocked. On the side surface on the proximal end side of the engagement plate 42, a locking engagement recess 43 as a second engagement portion is formed. Moreover, as shown in FIG. 6, the outer surface of the front-end | tip frame 41c of the frame 41 is made into the engaging surface 44 as a 1st engaging part.

  And the upper frame 41a and the lower frame 41b of the frame 41 are supported so that rotation with respect to the support shafts 16a and 16b attached to each bearing piece 14 is possible. Therefore, the open / close regulating member 10 (frame body 41) is, like the arm member 9, with the support shafts 16a and 16b as the rotation center, the standing position (see FIG. 8) and the prone position (see FIGS. 4 and 5). It is possible to rotate between.

  When the frame body 41 having the engagement plate 42 overlaps with the arm member 9, the frame body 41 is accommodated in the accommodating portion 40, and the engagement plate 42 and the guide plate 17 </ b> A overlap each other. At this time, the top frame 41c (engagement surface 44) is arranged on the insertion / removal portion 19 side with respect to the locking shaft 8 in a state where the locking shaft 8 is in contact with the stopper portion 18. The sizes of 41a and lower frame 41b are set in advance.

  Therefore, as shown in FIG. 5, when the opening / closing regulating member 10 (frame body 41) is rotated to the standing position in a state where the locking shaft 8 passes through the insertion / removal portion 19 of the arm member 9, As shown in FIG. 8, the locking engaging recess 43 formed in the engaging plate 42 is positioned on the stopper portion 18 side with respect to the locking shaft 8, and the engaging plate 42 contacts the guide plate 17A. When the door 1 is to be opened from this state, the locking shaft 8 engages with the locking engagement recess 43 before being guided by the guide portion 17 of the guide plate 17A. As a result, the door 1 cannot be opened.

  Further, as shown in FIG. 6, the opening / closing regulating member 10 (frame body 41) is raised to the upright position as shown in FIG. 7 with the locking shaft 8 engaged with the stopper portion 18 of the arm member 9. When it is rotated, the engagement surface 44 of the opening / closing regulating member 10 (tip frame 41c) is positioned on the insertion / removal portion 19 side with respect to the locking shaft 8, and the engagement plate 42 contacts the guide plate 17A. When the door 1 is to be closed from this state, the locking shaft 8 engages with the engagement surface 44. As a result, the door 1 cannot be closed from the engagement position (second open position).

  An operation piece 45 is formed on the distal end frame 41c of the opening / closing regulating member 10 on the side opposite to the arm member 9 so as to extend toward the distal end side. As shown in FIGS. 5, 7, and 8, when the opening / closing regulating member 10 and the arm member 9 are overlapped, the operation piece 45 protrudes from the distal end portion of the arm member 9 and rotates the opening / closing regulating member 10. It makes it easy.

  Next, the moderation mechanism of the opening / closing regulating member 10 and the arm member 9 will be described. Since the moderation mechanism of the opening / closing regulating member 10 and the arm member 9 has the same configuration, the moderation mechanism of the opening / closing regulating member 10 will be described, and the moderation mechanism of the arm member 9 will be omitted for convenience of description.

In FIG. 9, the mounting plate 13 is attached to the door 1, and is provided on the surface 52 facing the base end surface 51 of the upper frame 41 a and the lower frame 41 b that is rotatably supported by the support shafts 16 a and 16 b. 53 is formed, and the pressing plate 54 is disposed in the accommodating recess 53 so as to be able to appear and retract. A fitting groove 55 is formed on the surface of the pressing plate 54. The back surface of the pressing plate 54 is always pressed by a spring SP disposed in the housing recess 53, and the surface of the pressing plate 54 is elastically pressed against the base end surface 51. Therefore, when the opening / closing regulating member 10 is rotated, the base end surfaces 51 of the upper frame 41 a and the lower frame 41 b are in sliding contact with the surface of the pressing plate 54 while being pressed by the pressing plate 54.

  On the other hand, the base end face 51 of the upper frame 41a and the lower frame 41b is provided with a protrusion 56 that fits into the fitting groove 55 formed on the surface. The protrusion 56 is formed at a predetermined position on the base end face 51 so as to be fitted into the fitting groove 55 when the opening / closing regulating member 10 is rotated to the standing position. Therefore, when the open / close regulating member 10 is rotated to the upright position and the protrusion 56 is fitted into the fitting groove 55, it is felt that the open / close regulating member 10 is located at the upright position, and the open / close regulating member 10 is detected. Is held in the upright position. Further, when the opening / closing regulating member 10 is rotated from the standing position to the prone position, the protrusion 56 pushes the pressing plate 54 toward the accommodating recess 53 and escapes from the fitting groove 55. Thereafter, the base end surfaces 51 of the upper frame 41 a and the lower frame 41 b are rotated to the prone position while being in sliding contact with the surface of the pressing plate 54 while being pressed by the pressing plate 54.

Next, the usage method of the door guard 7 comprised as mentioned above is demonstrated.
(Visitor confirmation)
In the state where the door 1 is in the fully closed position, the arm member 9 is rotated to the standing position. Then, as shown in FIG. 5, the locking shaft 8 penetrates the insertion / removal portion 19 of the arm member 9, and the head 12 projects from the surface of the guide plate 17 </ b> A on the side opposite to the locking shaft. When the door 1 is opened from this state, the arm member 9 moves outward together with the door 1, and the locking shaft 8 abuts against the stopper portion 18 as shown in FIG. Therefore, the door 1 cannot be further opened from the contact position (first open position). Therefore, the visitor can be confirmed safely.

(When opening door 1 for alerting)
As in the case of the visitor confirmation described above, the locking shaft 8 is brought into contact with the stopper portion 18 as shown in FIG. Next, as shown in FIG. 7, when the opening / closing regulating member 10 is rotated to the upright position, the engagement surface 44 of the opening / closing regulating member 10 is positioned on the insertion / removal portion 19 side with respect to the locking shaft 8. . When the door 1 is to be closed from this state, the locking shaft 8 engages with the engagement surface 44. As a result, the door 1 cannot be closed from the engagement position (second open position). Thus, the door 1 can be held in the second open position, and the door 1 can be kept open for arousing while ensuring crime prevention.

(When locking door 1)
As shown in FIG. 4, with the door 1 in the fully closed position, the locking shaft 8 has the operation piece 45 of the opening / closing regulating member 10 while passing through the insertion / removal portion 19 of the arm member 9. When the opening / closing regulating member 10 is rotated to the upright position, the arm member 9 is also rotated in conjunction with it. As shown in FIG. 8, the locking shaft 8 passes through the insertion / removal portion 19 and engages with a locking engagement recess 43 formed in the engagement plate 42. When the door 1 is to be opened from this state, the locking shaft 8 engages with the locking engaging recess 43 before being guided by the guide portion 17 of the guide plate 17A. As a result, the door 1 cannot be opened.

Therefore, according to the above embodiment, the following effects can be obtained.
(1) In this embodiment, the door 1 is held in the second open position by simply engaging the engagement surface 44 of the opening / closing regulating member 10 provided on the arm member 9 with the locking shaft 8. Can do. Therefore, the door can be held in a half-open state for ventilation or the like.

  (2) In the present embodiment, since the opening / closing regulating member 10 is rotatably provided on the support shaft 16 together with the arm member 9, the opening / closing regulating member 10 is lost and searched for in a conventional manner without the problem of the place of placement. There is no.

  (3) In the present embodiment, the door 1 can be held in the fully closed position only by engaging the locking engaging recess 43 of the opening / closing regulating member 10 provided in the arm member 9 with the locking shaft 8. Therefore, the door 1 can be locked also by the door guard 7, and even if the door 1 is unlocked illegally, the door guard 7 can prevent entry.

  (4) In this embodiment, since the operation piece 45 is provided on the opening / closing restriction member 10 so as to be longer than the arm member 9, the rotation operation of the opening / closing restriction member 10 can be performed safely and without being interrupted by the arm member 9. Easy to do.

  (5) In this embodiment, the opening / closing regulating member 10 and the arm member 9 are provided with a moderation mechanism. Therefore, the operability of the opening / closing regulating member 10 and the arm member 9 is improved, and the standing position can be reliably held.

In addition, you may change the said embodiment as follows.
In the above-described embodiment, the opening / closing regulating member 10 is rotatably connected to the support shaft 16. As shown in FIGS. 10 and 11, the opening / closing regulating member 10 may be pivotably connected to the arm member 9 so as to be superposed on the arm member 9. .

  Incidentally, in FIG. 10, the opening / closing regulating member 10 is provided along the guide portion 17 with respect to the lower arm portion 9 b of the arm member 9. The hinge 31 is pivotally connected to the arm member 9. A hook 32 is provided on the side opposite to the side on which the hinge 31 of the opening / closing regulating member 10 is provided. When the arm member 9 is overlaid, the hook 32 engages with the upper arm portion 9a and holds the overlaid state. In FIG. 11, the opening / closing regulating member 10 is pivotably connected to the distal end portion of the arm member 9 and is used by being rotated in the arrow direction. In addition, in the opening / closing regulating member 10 shown in FIGS. 10 and 11, a second opening engaging hole 23A is used instead of the opening engaging recess 23 corresponding to the first embodiment.

  In the above embodiment, the two engagement recesses 23 and the release engagement holes 24 are provided as the first engagement portions, but only one of them may be formed. Conversely, three or more may be provided.

  In the above-described embodiment, the opening / closing regulating member 10 is rotatably connected to the support shaft 16. As shown in FIG. 12, the arm member 9 is formed by extending the lower side of the lower arm portion 9b, and the locking engagement hole 22 and the two opening engagement holes 24 are formed in the extended portion. . That is, the opening / closing regulating member 10 is formed integrally with the arm member 9. On the other hand, on the attachment plate 11 of the locking shaft 8, a push type as a locking projection for engaging with the locking engagement hole 22 and the opening engagement hole 24 below the locking shaft 8. A locking shaft 33 is provided. When the push-type locking shaft 33 is pressed once, the tip end surface thereof is immersed until the surface of the mounting plate 11 is flush with the surface of the mounting plate 11. It is the latching shaft 33 which protrudes to the position which penetrates. Then, if the push type locking shaft 33 is appropriately pressed and engaged with the desired locking engagement hole 22 or the opening engagement hole 24, the same effect as in the above embodiment is obtained.

In the above embodiment, the opening / closing regulating member 10 simply rotates the support shaft 16, but the opening / closing regulating member 10 may be provided with a moderation mechanism. For example, between the bearing piece 14 of the mounting plate 13 and the bearing piece 21 of the opening / closing regulating member 10, for example, a plurality of recesses are formed on the surface of the bearing piece 21, and balls are formed in the recesses formed on the surface of the bearing piece 14. Arranged against the elastic force of the elastic member. Then, when the opening / closing regulating member 10 is rotated to the standing position or is rotated to the prone position, the balls are respectively fitted into the recesses formed on the surface of the bearing piece 21. As a result, the rotation position of the opening / closing regulating member 10 is maintained and the operability can be improved.

In the above embodiment, the arm member 9 is attached to the door 1 and the locking shaft 8 is attached to the entrance / exit frame 2.
In the above embodiment, the opening / closing regulating member 10 is rotatably attached to the support shafts 16, 16 a, 16 b that rotatably support the arm member 9. This may be performed by attaching the opening / closing regulating member 10 to the door 1 so as to be rotatable. That is, the opening / closing regulating member main body (opening / closing regulating member 10) in which the first engagement portion (opening engagement concave portion 23) and the second engagement portion (locking engagement hole 22) are formed, for example, in the above-described embodiment. It attaches to the door 1 so as to be rotatable via a plate only for the opening / closing regulating member main body (opening / closing regulating member 10), such as the mounting plate 13. In this case, a position adjacent to the arm member 9 is preferable. Therefore, the opening / closing regulating member 10 can be attached to the existing door guard later, and the same effect as in the above embodiment is obtained.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described together with effects.
(A) An opening / closing regulating member main body is rotatably attached to a door or an entrance / exit frame to which an arm member of the door guard is attached, and the door opening / closing regulating member main body is engaged with a locking shaft of the door guard, and the door The first engaging portion for holding the door is formed at a second open position provided between a fully closed position of the first stop position and a first open position where the locking shaft comes into contact with the arm member. Opening / closing regulating member for door guard.

  According to this, it can be attached to the existing door guard later, and the door can be fully closed and the first open position only by engaging the first engaging portion of the opening / closing regulating member with the locking shaft. The door can be held open at a second open position provided between the two. Therefore, the door can be held in a half-open state for ventilation or the like.

  (B) An opening / closing regulating member main body is rotatably attached to a door or an entrance / exit frame to which an arm member of the door guard is attached, and the door opening / closing regulating member main body is engaged with a locking shaft of the door guard, and the door An opening / closing regulating member for a door guard, wherein a second engaging portion for holding the door is formed at a fully closed position.

  According to this, it can be attached to the existing door guard later, and the door can be held in the fully closed position only by engaging the second engagement portion of the opening / closing regulating member with the locking shaft. . Therefore, even if the door is unlocked illegally, the door does not open due to the engagement between the opening / closing regulating member provided on the door guard and the locking shaft.

  (C) An opening / closing regulating member main body is rotatably attached to a door or an entrance / exit frame to which an arm member of the door guard is attached, and the door opening / closing regulating member main body is engaged with a locking shaft of the door guard, and the door A first engaging portion for holding the door in a second open position provided between a fully closed position of the first lock and a first open position where the locking shaft contacts the arm member; An opening / closing restricting member for a door guard, wherein a second engaging portion for holding the door is formed at a position.

  According to this, it can be attached to the existing door guard later, and the second open position can be obtained simply by engaging the first engagement portion or the second engagement portion of the opening / closing regulating member with the locking shaft. Alternatively, the door can be held in the fully closed position. In addition, since the opening / closing regulating member is provided on the arm member, there is no problem of the location of the opening / closing regulating member, and there is no possibility of losing and searching.

The front view seen from the inner side of the door for outward opening in 1st Embodiment. The perspective view of the door guard in 1st this embodiment. (A) is a use state figure which shows the state hold | maintained in the 2nd open position by a door guard, (b) is a use state figure of a normal door guard, (c) is a use state figure which shows the locked state by a door guard. The perspective view of the door guard seen from the inner side of the door for outward opening in 2nd Embodiment. Similarly, the perspective view which shows the state which rotated only the arm member of the door guard to the standing position. The perspective view which shows the normal use condition of a door guard similarly. The perspective view which similarly shows the use conditions, such as arousing a door guard. The perspective view which similarly shows the locked state of a door guard. Explanatory drawing similarly explaining the moderation mechanism of an arm member. The perspective view of the door guard for demonstrating another example. The perspective view of the door guard for demonstrating another example. The perspective view of the door guard for demonstrating another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Door, 2 ... Entrance / exit frame, 2a ... Horizontal frame, 2b ... Vertical frame, 3 ... Door closer, 7 ... Door guard, 8 ... Locking shaft, 9 ... Arm member, 9a ... Upper arm part, 9b ... Lower arm part DESCRIPTION OF SYMBOLS 10 ... Opening / closing control member, 12 ... Head, 16, 16a, 16b ... Support shaft as a support member, 17 ... Guide part, 18 ... Stopper part, 19 ... Inserting / removing part, 22 ... Second engaging part Lock engagement hole, 23... Opening engagement recess as the first engagement part, 23 A... Second release engagement hole as the first engagement part, 24... Opening as the first engagement part Engagement holes, 33 ... locking shafts as locking projections, 41 ... frame, 42 ... engagement plates, 43 ... locking engagement recesses as second engagement parts, 44 ... engagement as first engagement parts Interfacing, 45 ... operation piece.

Claims (11)

An arm member rotatably attached to either the door or the entrance / exit frame, and a locking shaft attached to the other and contacting the stopper portion of the arm member to open the door to the first open position. The locking shaft moves relative to the arm member along a guide portion formed on the arm member along with the opening operation of the door, and comes into contact with the stopper portion. In door guards that restrict the opening of doors,
An opening / closing regulating member having a first engagement portion that engages with the locking shaft and holds the door open at a second open position provided between the fully closed position of the door and the first open position. Door guard characterized by providing. The door guard according to claim 1,
The opening / closing regulating member is attached to a support member of the arm member so as to be rotatable in the same direction as the arm member, and overlaps with the arm member and relatively moves along a guide portion of the arm member. A door guard comprising a first engagement portion that engages with a shaft and is held open at the second open position. The door guard according to claim 1,
The opening / closing regulating member is pivotably attached to the arm member, overlaps with the arm member, engages with the locking shaft that moves relative to the arm member along the guide portion, and A door guard provided with a first engagement portion that is held open at the open position. The door guard according to claim 1,
The opening / closing regulating member is integrally formed with the arm member in parallel with the guide portion of the arm member,
A door guard characterized in that a protrusion that engages with the first engaging portion provided in the opening / closing regulating member is provided at a position adjacent to the locking shaft so as to be able to appear and retract. An arm member rotatably attached to either the door or the entrance / exit frame, and a locking shaft attached to the other and contacting the stopper portion of the arm member to open the door to the first open position. With the opening operation of the door, the locking shaft moves relative to the arm member along a guide portion formed on the arm member and abuts against the stopper portion to reach the first opening position or more, In door guards that restrict the opening of doors,
A door guard comprising an opening / closing regulating member having a second engagement portion that engages with the locking shaft and holds the door in a fully closed position of the door. The door guard according to claim 5,
The opening / closing regulating member is attached to a support member of the arm member so as to be rotatable in the same direction as the arm member, overlaps with the arm member, and is relatively moved along a guide portion of the arm member. A door guard provided with a second engagement portion that engages with a stop shaft and holds the shaft in the fully closed position. The door guard according to claim 6,
The opening / closing regulating member is pivotally attached to the arm member, overlaps with the arm member, engages with the locking shaft that moves relatively along the guide portion of the arm member, and engages the fully closed state. A door guard provided with a second engagement portion to be held in position. An arm member rotatably attached to either the door or the entrance / exit frame, and a locking shaft attached to the other and contacting the stopper portion of the arm member to open the door to the first open position. The locking shaft moves relative to the arm member along a guide portion formed on the arm member along with the opening operation of the door, and comes into contact with the stopper portion. In door guards that restrict the opening of doors,
A first engaging portion that engages with the locking shaft and holds the door in a second open position provided between the fully closed position of the door and the first open position; The door guard characterized by providing the opening-and-closing control member which has the 2nd engaging part holding the said door in a closed position. The door guard according to claim 8,
The door guard, wherein the opening / closing regulating member is attached to a support member of the arm member so as to be rotatable in the same direction as the arm member. The door guard according to claim 8,
The door guard characterized in that the opening / closing regulating member is pivotably attached to the arm member. In the door guard of any one of Claims 1-10,
The door guard is characterized in that an operation piece having a length protruding from the tip of the arm member is formed at the tip of the opening / closing regulating member.

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