JP4914871B2 - Door guard - Google Patents

Description

  The present application relates to a door guard, and more particularly to a technical field of a door guard that can cope with deformation of a door caused by an earthquake or the like.

  A door guard is usually attached to a door attached to the entrance of a building for the purpose of crime prevention. Various door guards are known, and generally known door guards include an arm that is pivotally connected to the door via a pivot, and a protrusion that is fixed to the door frame. I have. The arm is provided with an insertion / removal hole for inserting / removing the protrusion with the rotation of the arm in the closed state, and a guide groove for guiding the protrusion to the stop position when the door is opened. In the closed state, by raising the arm, the opening angle of the door can be limited when the door is opened.

  When an earthquake or the like occurs, with the deformation of the door frame due to the earthquake, for example, the protrusion is pressed against the arm side, the door guard component is deformed, the arm mounting part and the protrusion are engaged and cannot be detached, People may be trapped in buildings.

  There are earthquake-proof door guards corresponding to such problems (see Patent Documents 1 and 2).

  The door guard for earthquake resistance of Patent Document 1 is provided with a step portion on the arm body, and the arm mounting portion on which the arm body is provided is separated from the engagement hook engaged with the arm by the step. Therefore, even if the door and the door frame approach each other due to the influence of an earthquake or the like, the engagement between the arm mounting portion and the engagement hook is prevented.

  Further, the earthquake-resistant door guard of Patent Document 2 includes a holding means on the arm locking member, and when the door frame and the door are shifted up and down due to an earthquake or the like, the arm locking member is moved upward and downward by a certain angle. The arm locking member is configured to be swingable so as to prevent the arm locking member from being engaged with the arm engaged with the arm locking member and not coming off.

Japanese Patent No. 2876115 JP 9-291742 A

  However, the door guard for earthquake resistance of Patent Document 1 has a problem that the arm becomes large and the amount of protrusion from the door increases, and clothes are easily caught on the arm when going in and out and the design is deteriorated.

  Further, the earthquake-resistant door guard disclosed in Patent Document 2 is effective when the door frame is generally referred to as in-plane deformation, but is not so effective when the door frame is referred to as local deformation. There was a point.

  If the conventional door guard can function as an earthquake-resistant door guard with a simple change without particularly changing the shape of the door guard, it is possible to reduce the cost and it is convenient.

  Therefore, the present invention has been made with the above problem as an example of an object, and in particular, an object of the present invention is to provide a door guard that can cope with local deformation.

In order to solve the above-mentioned problem, the door guard according to claim 1 includes an arm (10) rotatably attached to a base (12), and an engaging portion (20) engageable with the arm. The base and the engaging part have a hole (23a, 30) for attaching to the door frame (6) or the door (4) provided on the door frame by a fixing tool (16). , in a state in which the arm is disposed along a surface of the door, the hole portion formed in one of said base and said engaging portion is a long hole, the axis of the major axis side the arm The base is erected so as to face the protrusion of the engaging portion and extend in a direction perpendicular to the axial direction of the arm, and the arm contacts the local deformation of the door frame It has the standing wall piece to do.

The door guard according to claim 2 is the door guard according to claim 1 , wherein the long diameter side of the long hole is the same as the clearance from a horizontal clearance (C) between the door frame and the door. It has a length for moving the base or the engagement portion by a length obtained by subtracting the clearance (C1) between the engagement portion and the contact portion in the direction.

According to a third aspect of the present invention, the door guard is configured such that an arm rotatably attached to a base, an engaging portion engageable with the arm, and the engaging portion come into contact with each other when the door frame is locally deformed. A door guard having a hole for attaching to a door frame or a door provided on the door frame by a fixing tool, the base and the engagement portion. Any one of the hole portions is a long hole, and in a state where the arm is disposed along the surface of the door, the long diameter side is formed along the axial direction of the arm, and the head of the fixing tool is formed. The depth from the mounting surface of the fixture facing the back surface of the portion to the bottom surface of the base or the engaging portion is such that one end on the long diameter side is shallower than the other end on the long diameter side. .

According to a fourth aspect of the present invention, the door guard according to the third aspect is characterized in that the mounting surface of the fixture exists on the same plane.

The door guard according to claim 5 is the door guard according to claim 3 , wherein the mounting surface of the fixture is formed with a step.
The door guard according to claim 6 is the door guard according to claim 3, wherein the long diameter side of the long hole is at least engaged with the clearance in the same direction as the clearance from the clearance between the door frame and the door. It has a length for moving the base or the engaging part by a length obtained by subtracting the clearance between the part and the contact part.

  According to the present invention, when an earthquake occurs, it is possible to prevent a person in the room from being confined in a building due to the engagement of the engaging frame and the base to which the arm is attached due to deformation of the door frame due to local deformation.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.

-Door guard configuration, etc. (first embodiment)-
First, with reference to FIG. 1 thru | or FIG. 5, and FIG. 8, the structure of the door guard in this embodiment is demonstrated. 1 is a plan view showing a door guard attached state, FIG. 2 is a front view of the door guard, FIG. 3 is a configuration diagram of an arm, FIG. 4 is a cross-sectional view of a base showing a state where a fixture is attached, and FIG. FIG. 6 is a cross-sectional view of the base showing a state in which the fixture according to another embodiment is attached, and FIG. 7 is a state when the fixture is moved according to another embodiment. FIG. 8 is an example showing a state of the engaging portion and the arm during local deformation. 4 to 7 are cross-sectional views taken along the line AA in FIG.

  As shown in FIGS. 1 to 3, the door guard 2 is attached to a door frame 6 and a door 4 for outward opening that is arranged on the door frame 6 with a predetermined clearance C in the horizontal direction. The door guard 2 includes an arm 10 attached to the door 4 and an engaging portion 20 attached to the door frame 6 and engaged with the arm 10. The engaging portion 20 is formed with a protrusion 21 protruding inside the door frame 6, and a head portion 21 a of the protrusion 21 is formed to bulge.

  The arm 10 is pivotally attached to a base 12 via a pivot 15 as shown by an arrow in FIG. 1, and the base 12 is fixed on the inner surface of the door 4 by a fixture 16 such as a set screw. Fixed and attached.

  As shown in FIG. 2, the arm 10 is a U-shaped member made of a metal material or the like, and is formed by closing one end of two rails 10a and 10b extending in parallel. The arm 10 is arranged on the inner surface of the door 4 so that two rails 10a and 10b are arranged vertically and extend horizontally.

  As shown in FIGS. 1 to 3, the base 12 includes a base 13 and protruding pieces 14 that function as contact portions of the present application provided above and below the base 13. The base 13 has a hole 30 for inserting the fixture 16, and is attached to the inner surface of the door 4 by the fixture 16 through the hole 30.

  The protruding piece 14 has a support part for supporting the arm 10 and a bent part that is bent at one end of the support piece. Each of the upper and lower support portions is provided with a pivot 15 on the same axis, and the other ends of the two rails 10 a and 10 b are attached to each pivot 15. Thereby, the arm 10 can be rotated about the pivot 15 as a fulcrum, that is, it can be tilted on the inner surface of the door 4.

  Although not shown, a click stop mechanism is provided between the base 12 and the arm 10 for positioning the arm 10. Thereby, the arm 10 can be stopped at a plurality of positions and postures at predetermined angles with respect to the door 4.

  Further, the arm 10 has an insertion / removal portion 17 through which the head 21a of the projection 21 is inserted / removed by the rotation of the arm 10 in the closed state, and the above insertion for guiding the projection 21 to one end of the arm 10 when the door is opened. A guide groove 18 connected to the removal portion 17 is provided.

  The insertion / removal portion 17 is formed on the other end (opening) side of the two rails 10 a and 10 b in the arm 10. Specifically, the insertion / removal portion 17 is formed by bending the inner portions of the two rails 10a, 10b arranged to face each other. 17, the head 21 a of the projection 21 can enter and exit.

  Further, the guide groove 18 is formed between the two rails 10 a and 10 b of the arm 10 so as to extend from the insertion / removal portion 17 toward one end of the arm 10, and has a width smaller than that of the insertion / removal portion 17. .

  On the other hand, as shown in FIG. 2, the engaging portion 20 includes a base 23, and the protrusion 21 is provided on the base 23. The base 23 has a hole 23a, and is fixed and attached to the door frame 6 by a fixing tool 24 such as a set screw through the hole 23a.

  Further, the protrusion 21 is disposed so as to protrude from the door frame 6 along the inner surface of the door 4 in the closed state. The head 21a of the projection 21 is formed to be smaller than the opening of the insertion / removal portion 17, and when the arm 10 is erected or tilted on the inner surface of the door 4 in the closed state, the insertion / removal portion 17 of the arm 10 Enter or leave. Further, the head 21 a is formed larger than the width of the guide groove 18.

  Thus, in the door guard 2 of the present embodiment, when the arm 10 is raised in the closed state, the projection 21 enters the insertion / removal portion 17, and the projection 4 is guided by opening the door 4 in this state. The opening angle of the door 4 can be limited by being guided by the groove 18 and engaging the projection 21 with one end of the arm 10. Note that after the projection 21 is guided into the guide groove 18, the arm 10 cannot be tilted on the door 4.

  Further, as shown in FIG. 8, the door guard 2 of the present embodiment has an engaging portion with respect to the protruding piece 14 provided on the base body 13 when the door frame 6 is deformed due to local deformation at the time of an earthquake, for example. In order to prevent the base 23 of the 20 from being pressed and the components of the engaging portion 20 meshing with the base 12 to make it impossible to open the door, as shown by an arrow in FIG. When the base 23 of the engaging portion 20 comes into contact with the protruding piece 14 provided on the base body 13 by applying a pressing force from the direction, the base 12 moves in a direction away from the engaging portion 20 (right direction in FIG. 8). It is supposed to be.

  Specifically, as shown in FIGS. 2 to 4, the hole 30 into which the fixture 16 for fixing the base 12 to the door 4 is inserted includes a short diameter and a long diameter. It is formed in a hole shape. Further, the hole 30 is formed so that the longer diameter side is along the axial direction of the arm 10 in a state where the arm 10 is arranged along the surface of the door 4, and the head of the fixing tool 16 is formed inside the hole 30. A fixture receiving seat 30a that contacts and serves as a mounting surface of the fixture 16 is formed. When the door frame 6 is deformed due to local deformation and the base 23 of the engaging portion 20 is pressed against the protruding piece 14 provided on the base 13, the hole 16 is moved by the fixture 16 on the mounting surface. It is sufficient that at least the base 12 can be shifted in the direction away from the engaging portion 20. Therefore, in this embodiment, the long diameter side of the hole 30 is set to a length corresponding to the horizontal clearance C (substantially about 8 mm) between the door frame 6 and the door 4. The base 12 can be shifted by the major axis. Thereby, at the time of local deformation | transformation, the movement amount of the base 12 which should avoid mesh | engagement with the base 12 and the engaging part 20 is securable.

  The length of the hole 30 on the long diameter side is not limited as long as the engagement between the engagement portion 20 and the base 12 can be avoided at the time of local deformation. Therefore, the horizontal clearance C between the door frame 6 and the door 4 can be avoided. The length by which the base 12 is moved by a length obtained by subtracting the horizontal clearance C1 (see FIG. 1) of the base plate 23 of the engaging portion 20 and the projecting piece 14 provided on the base 13 from the base plate 13 during local deformation. It only has to have.

  According to the door guard 2 configured as described above, even if the base 23 of the engaging portion 20 comes into contact with the protruding piece 14 (or the arm 10) provided on the base body 13 due to local deformation, the base 12 has a long diameter. Therefore, it is possible to sufficiently prevent the base 12 and the engaging portion 20 from engaging with each other.

  As shown in FIGS. 2 and 4, the hole 30 has a depth D <b> 1 from the surface of the fixture receiving seat 30 a at one end on the long diameter side to the bottom surface of the hole 30 on the door frame 6 side. It is formed shallower than the depth D2 of the other end on the side. At this time, the surface of the fixture receiving seat 30a at one end on the long diameter side and the surface of the fixture receiving seat 30a at the other end are arranged in parallel. That is, the mounting surface of the fixture is formed with a step.

  And when attaching the base 12 to the door 4, as shown in FIG. 4, the fixing tool 16 is attached to the fixing tool seat 30a in the other end of the long diameter side of the said hole part 30. As shown in FIG. Further, when an earthquake occurs, the base 23 of the engaging portion 20 comes into contact with the projecting piece 14 (or the arm 10) provided on the base 13 and further presses the base 12, and as shown in FIG. The base 12 moves in a direction away from the engaging portion 20 (right direction in FIG. 2), and the fixture 16 is arranged on one end side of the long diameter. At this time, since the depth D1 at one end on the long diameter side is shallower than the depth D2 at the other end, the fixture 16 is easily moved, and the fixture 16 and the fixture receiver after the movement are easily moved. A gap S is formed between the seat 30a and the base 12 is loose. Thereby, even if the base 23 of the engaging part 20 is in contact with the protruding piece 14 (or the arm 10) provided on the base 13, the frictional force is reduced, and the base 12 and the engaging part 20 are engaged. Can be difficult.

  As shown in FIGS. 4 and 5, instead of forming a step in the fixture receiving seat 30a, the fixture receiving seat 30a may be formed on a slope as shown in FIGS. That is, the surface of one end on the longer diameter side of the fixture receiving seat 30a and the surface of the other end are present on the same plane. Accordingly, when the engaging portion 20 presses the base 12 when an earthquake occurs, the base 12 moves in a direction away from the engaging portion 20 as shown in FIG. Move from the side to one end of the long diameter. Therefore, the door guard 2 of the present embodiment can obtain the same effect as when the step is formed on the fixture receiving seat 30a.

-Door guard operation-
Next, operation | movement of a door guard is demonstrated using FIG.2, FIG.4, FIG.5 and FIG.

  First, when attaching the base 12 to the door 4, as shown in FIG.2 and FIG.4, the fixture 16 comes to be attached to the fixture seat 30a in the other end of the long diameter side of the said hole part 30. As shown in FIG. ing.

  Next, as shown in FIG. 8, when the door 4 is closed, an earthquake or the like occurs, and when the door frame 6 is deformed by local deformation, the engaging portion 20 moves to the base 12 side. If the base 23 of the engaging portion 20 comes into contact with the protruding piece 14 (or the arm 10) provided on the base 13 before the clearance C is eliminated by this movement, as shown in FIG. The fixture receiving seat 30a formed in the portion 30 moves from the other end side to one end side. In addition, a gap S is formed between the fixture 16 after movement and the fixture seat 30a, and the base 12 is loose. Thereby, even if the engaging part 20 is contacting the base 12 etc., a frictional force can be reduced and it can make it difficult to mesh | engage the base 12 and the engaging part 20. FIG.

-Second Embodiment-
Next, another embodiment of the door guard will be described with reference to FIGS. FIG. 9 is a plan view showing a door guard attached state according to the second embodiment, FIG. 10 is a front view of the door guard, and FIG. 11 is a front view showing another embodiment of a protrusion formed on the standing wall piece. The same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and details thereof are omitted.

  The first embodiment differs from the first embodiment in that the door guard 2 is attached to the door 4 for outward opening, whereas the present embodiment is different in that the door guard 2A is attached to the door 4 for inner opening. .

  As shown in FIGS. 9 and 10, the door guard 2 </ b> A according to the present embodiment is attached to the door 4 for inner opening, and is attached to the door 10 and the door 4. 10 is provided. The engaging portion 20a has an arm 36 that is bent so as to protrude toward the door frame 6, and has a protrusion 37 that bulges at the tip of the arm 36. .

  The arm 10 is pivotally attached to the base 12 via a pivot 15 as shown by an arrow in FIG. 9, and the base 12 is fixed to a fixing tool 16 such as a set screw on the inner surface of the door frame 6. Fixed by and attached.

  As shown in FIGS. 9 and 10, the base 12 is erected on the base 13, the protruding pieces 14 provided above and below the base 13, and the left end of the base 13 in FIG. And a standing wall piece 35 functioning as a contact portion of the present application, which is disposed to face a protrusion 37 formed at the tip of the arm 36. Further, the base 13 is formed with a plurality of holes 30 for inserting the fixture 16, and is attached to the inner surface of the door frame 6 by the fixture 16 through the holes 30.

  Further, the arm 10 guides the protrusion 37 to one end of the arm 10 when the door is opened, and the insertion / removal portion 17 into which the protrusion 37 of the engagement portion 20a is inserted and removed by the rotation of the arm 10 in the closed state. A guide groove 18 connected to the insertion / removal portion 17 is provided.

  The insertion / removal portion 17 is formed on the other end (opening) side of the two rails 10 a and 10 b in the arm 10. Specifically, the insertion / removal portion 17 is formed by bending the inner portions of the two rails 10a, 10b arranged to face each other. The protrusion 37 can enter and exit the 17.

  On the other hand, the engaging portion 20 a includes a base 38, and the arm 36 is integrally formed on the base 38. The base 38 has a hole 39, and is fixed and attached to the door frame 6 through the hole 39 by a fixing tool 24 such as a set screw.

  Thus, in the door guard 2A of the present embodiment, when the arm 10 is tilted in the closed state, the protrusion 37 enters the insertion / removal portion 17 and the door 4 is opened in this state, whereby the arm 36 is guided to the guide groove. 18, the protrusion 37 engages with one end of the arm 10, so that the opening angle of the door 4 can be limited. Note that after the projection 37 is guided into the guide groove 18, the arm 10 cannot be tilted and raised on the door 4.

  The hole 30 formed in the base 12 has a long hole shape including a short diameter and a long diameter. In the state where the arm 10 is disposed along the surface of the door 4, the long diameter side is the arm. It is formed along 10 axial directions. Inside the hole portion 30, a fixture receiving seat 30 a is formed, which is in contact with the head of the fixture 16 and serves as a mounting surface of the fixture 16. When the door frame 6 is deformed due to local deformation and the projection 37 of the engaging portion 20a is pressed against the standing wall piece 35 of the base 12, the hole 16 is moved by the fixture 16 on the mounting surface. What is necessary is just to be able to shift the base 12 in the direction away from the engaging portion 20a. Therefore, in this embodiment, the long diameter side of the hole 30 is set to a length corresponding to the horizontal clearance C (substantially about 8 mm) between the door frame 6 and the door 4. The base 12 can be shifted by the major axis. Thereby, at the time of local deformation, the engagement portion 20a and the arm 10 are close to each other, and even if the arm 10 is erected, the protrusion 37 is guided to the guide groove 18 and the locked state is to be avoided. The amount of movement of the table 12 can be ensured.

  The length of the hole 30 on the long diameter side is not limited as long as it can avoid the engagement of the projection 37 and the guide groove 18 at the time of local deformation, so that the local clearance from the horizontal clearance C between the door frame 6 and the door 4 is local. It is only necessary to have a length to move the base 12 by a length obtained by subtracting the horizontal clearance C1 (see FIG. 10) of the protrusion 37 and the protrusion 35a of the standing wall piece 35 that are in contact with each other during deformation.

  According to the door guard 2A configured as described above, when the protrusion 37 of the engaging portion 20a comes into contact with the standing wall piece 35 due to local deformation, the base 12 can move by the long diameter, and the engaging portion 20a. Even if the arm 10 is close to the arm 10 and the arm 10 is erected, it is possible to sufficiently prevent the projection 37 from being guided by the guide groove 18 and maintaining the locked state.

  Further, the surface of the fixture receiving seat 30a is formed on an inclined surface as in the first embodiment, and the depth thereof is shallower on the right side than on the left side in FIG. Thereby, for example, when a pressing force is applied from a predetermined direction due to the occurrence of an earthquake and the protrusion 37 of the engaging portion 20a comes into contact with the standing wall piece 35 of the base 12, the base 12 is engaged with the engaging portion. It moves in the direction away from 20a (the left direction in FIG. 10), and the fixture 16 moves from the left side of the long diameter to the right side of the long diameter. At this time, since the fixture receiving seat 30a is formed on an inclined surface, the fixture 16 is easy to move, and a gap is formed between the fixture 16 after moving and the fixture receiving seat 30a. The base 12 has a backlash. Thereby, even if the engaging part 20a and the arm 10 approach and it raises the arm 10, it can prevent that the protrusion 37 is guided by the guide groove 18 and a locked state is maintained.

  Instead of forming the fixture receiving seat 30a on the slope, as described in the first embodiment, the fixture receiving seat 30a (fixing fixture 30a (fixing fixture) is set so that the right end of the fixture receiving seat 30a is lower than the left end. (16 attachment surfaces) may be provided with a step. As a result, the same effect as described above can be obtained.

  As shown in FIGS. 9 and 10, the standing wall piece 35 provided on the base 12 is disposed to face the protrusion 37 formed at the tip of the arm 36 of the engaging portion 20 a, and the protruding piece 14. Projections 35a and 35a projecting toward the projection 37 are provided so as to surround the substantially left half of the fixture 16 disposed therebetween. The horizontal clearance C1 between the projection 35a and the projection 37 of the arm 36 that comes into contact with the projection 35a when the arm 36 moves in the horizontal direction during local deformation is the door frame 6 and the door 4 It is set to be smaller than the horizontal clearance C between. Thereby, in this embodiment, the projection 12 of the arm 36 is brought into contact with the projections 35a and 35a of the standing wall piece 35 before the clearance C is eliminated during local deformation, and the base 12 is moved away from the engaging portion 20a. It is possible to move to. Therefore, in the present embodiment, after the local deformation, when the engaging portion 20a and the arm 10 are close to each other and the arm 10 is erected, the projection 37 is guided by the guide groove 18 and the locked state is maintained. It can be sufficiently prevented.

  In the above embodiment, since it is difficult to attach the fixture 16 disposed between the projecting pieces 14, the projection 35a is provided so as to avoid the fixture 16, but FIG. As shown, when the mounting position of the fixing tool 16 is moved and the mounting work of the fixing tool 16 is not hindered, the shape of the protrusion 35a may be substantially rectangular.

-Third embodiment-
Next, another embodiment of the door guard will be described with reference to FIGS. FIG. 12 is a plan view showing a door guard attached state according to the third embodiment, and FIG. 13 is a front view of the door guard. The same parts as those in FIGS. 9 and 10 are denoted by the same reference numerals, and the description thereof is omitted.

  In the first and second embodiments, the hole 12 having a long hole shape is formed in the base 12, whereas in the present embodiment, a hole having a long hole shape is formed in the base 38 of the engaging portion 20a. The difference is that the portion 42 is formed.

  As shown in FIGS. 12 and 13, the door guard 2 </ b> B of the present embodiment is attached to the door 4 for inner opening, and is attached to the door 10, the arm 10 attached to the door frame 6, and the arm 4. 10 is provided. The engaging portion 20a has an arm 36 that is bent so as to protrude toward the door frame 6, and has a protrusion 37 that bulges at the tip of the arm 36. .

  The arm 10 is pivotally attached to the base 12 via a pivot 15 as shown by the arrow in FIG. 12, and the base 12 has a hole 40. Via a fixing tool 16 such as a set screw on the inner surface of the door frame 6.

  As shown in FIGS. 12 and 13, the base 12 is erected on the base 13, the protruding pieces 14 provided above and below the base 13, and the left end of the base 13 in FIG. And a standing wall piece 35 functioning as a contact portion of the present application, which is disposed to face a protrusion 37 formed at the tip of the arm 36. Similarly to the second embodiment, the standing wall piece 35 is disposed so as to face the protrusion 37, and has protrusions 35a and 35a protruding toward the protrusion 37 so as to surround the substantially left half of the fixture 16. is doing.

  Further, the arm 10 guides the protrusion 37 to one end of the arm 10 when the door is opened, and the insertion / removal portion 17 into which the protrusion 37 of the engagement portion 20a is inserted and removed by the rotation of the arm 10 in the closed state. A guide groove 18 connected to the insertion / removal portion 17 is provided.

  The insertion / removal portion 17 is formed on the other end (opening) side of the two rails 10 a and 10 b in the arm 10. Specifically, the insertion / removal portion 17 is formed by bending the inner portions of the two rails 10a, 10b arranged to face each other. The protrusion 37 can enter and exit the 17.

  On the other hand, the engaging portion 20 a includes a base 38, and the arm 36 is integrally formed on the base 38. The base 38 has a hole 42, and is fixed and attached to the door frame 6 by the fixing tool 24 such as a set screw through the hole 42.

  Thus, in the door guard 2B of the present embodiment, when the arm 10 is tilted in the closed state, the protrusion 37 enters the insertion / removal portion 17 and the door 4 is opened in this state, so that the arm 36 becomes the guide groove. 18, the protrusion 37 engages with the tip of the arm 10, so that the opening angle of the door 4 can be limited. Note that after the projection 37 is guided into the guide groove 18, the arm 10 cannot be tilted and raised on the door 4.

  The hole portion 42 formed in the base 38 of the engaging portion 20a has a long hole shape including a short diameter and a long diameter, and the arm 10 is disposed along the surface of the door 4. The major axis side is formed along the axial direction of the arm 10. Inside the hole portion 42, a fixture receiving seat 42 a is formed, which is in contact with the head of the fixture 24 and serves as a mounting surface of the fixture 24. The hole 42 is fixed to the fixture 24 when the projection 37 of the engaging portion 20a is pressed against the projections 35a, 35a of the standing wall piece 35 provided on the base 12 due to the local deformation of the door frame 6. However, it is only necessary that the mounting surface can be moved and at least the base 38 of the engaging portion 20a can be shifted in the direction away from the base 12. Therefore, in the present embodiment, the long diameter side of the hole portion 42 is set to a length corresponding to the horizontal clearance C (substantially about 8 mm) between the door frame 6 and the door 4. It is possible to shift the base 38 of the engaging portion 20a by the major axis. Thereby, at the time of local deformation, the engagement portion 20a and the arm 10 are close to each other, and even if the arm 10 is erected, the protrusion 37 is guided by the guide groove 18 and the locked state should be avoided. The amount of movement of the base 38 of the joint portion 20a can be ensured.

  Note that the length of the long-diameter side hole portion 42 is not limited as long as it can avoid the engagement of the projection 37 and the guide groove 18 during local deformation. It is only necessary to have a length for moving the engaging portion 20a by a length obtained by subtracting the horizontal clearance C1 (see FIG. 13) of the projection 37 and the projection 35a of the standing wall piece 35 that are in contact with each other during deformation.

  According to the door guard 2B configured as described above, when the protrusion 37 of the engaging portion 20a comes into contact with the protrusions 35a and 35a of the standing wall piece 35 due to local deformation, the base 38 of the engaging portion 20a corresponds to the long diameter thereof. Even if the engaging portion 20a and the arm 10 are close to each other and the arm 10 is erected, it is possible to sufficiently prevent the projection 37 from being guided by the guide groove 18 and maintaining the locked state. .

  Further, the surface of the fixture receiving seat 42a is formed on an inclined surface as in the first embodiment, and the depth thereof is shallower on the left side than the right side in FIG. Thereby, for example, as shown by an arrow in the figure due to the occurrence of an earthquake or the like, a pressing force is applied from a predetermined direction, and the protrusions 37a of the standing wall piece 35 provided on the base 12 come into contact with the protrusions 37 of the engaging portion 20a. Then, the engaging portion 20a moves in a direction away from the base 12 (right direction in FIG. 13), and the fixture 24 moves from the right side of the long diameter to the left side. At this time, since the fixture receiving seat 42a is formed on the slope, the fixture 24 is easy to move, and a gap is created between the fixture 24 after moving and the fixture receiving seat 42a. The base 12 has a backlash. Thereby, even if the engaging part 20a and the arm 10 approach and it raises the arm 10, it can prevent that the protrusion 37 is guided by the guide groove 18 and a locked state is maintained.

  Instead of forming the fixture receiving seat 42a on the slope, as described in the first embodiment, the fixture receiving seat 42a (fixing fixture 42a) is set so that the left end of the fixture receiving seat 42a is lower than the right end. A step may be formed on the mounting surface 39. As a result, the same effect as described above can be obtained.

As shown in FIGS. 12 and 13, the standing wall piece 35 provided on the base 12 is disposed to face the protrusion 37 formed at the tip of the arm 36 of the engaging portion 20 a, and the protruding piece 14. Projections 35a and 35a projecting toward the projection 37 are provided so as to surround the substantially left half of the fixture 16 disposed therebetween. The horizontal clearance C1 between the projection 35a and the projection 37 of the arm 36 that comes into contact with the projection 35a when the arm 36 moves in the horizontal direction during local deformation is the door frame 6 and the door 4 It is set to be smaller than the horizontal clearance C between. Thereby, in this embodiment, the projection 37 of the arm 36 is brought into contact with the projections 35a and 35a of the standing wall piece 35 before the clearance C is eliminated during local deformation, and the engagement portion 20a is separated from the base 12 It is possible to move to. Therefore, in the present embodiment, after the local deformation, when the engaging portion 20a and the arm 10 are close to each other and the arm 10 is erected, the projection 37 is guided by the guide groove 18 and the locked state is maintained. It can be sufficiently prevented.

  Similarly to the second embodiment, the protrusion 35a provided on the standing wall piece 35 does not hinder the mounting work of the fixing tool 16 to the door frame 6 by moving the mounting position of the fixing tool 16 or the like. In such a case, the shape of the projection 35a can be made substantially rectangular.

  In addition, this embodiment is one form, and is not limited to this form. For example, in this embodiment, the fixture receiving seat 30a serving as the attachment surface of the fixture inside the holes 30, 42, 42a is formed, but a long hole may be simply formed, and a step or a slope may be formed on the surfaces of the bases 13 and 38 forming the long hole.

It is a top view which shows the attachment state of a door guard. It is a front view of a door guard. It is a block diagram of an arm. It is sectional drawing of the base which shows the state to which the fixing tool was attached. It is sectional drawing of the base which shows the state at the time of fixture movement. It is sectional drawing of the base which shows the state in which the fixing tool in other embodiment was attached. It is sectional drawing of the base which shows the state at the time of the fixture movement in other embodiment. It is an example which shows the state of the engaging part and arm at the time of local deformation | transformation. It is a top view which shows the attachment state of the door guard which concerns on 2nd Embodiment. It is a top view of a door guard. It is a front view which shows other embodiment of the protrusion formed in a standing wall piece. It is a top view which shows the attachment state of the door guard which concerns on 3rd Embodiment. It is a plane of a door guard.

Explanation of symbols

2 Door guard 4 Door 6 Door frame 12 Base 16 Fixture 20 Engagement portion 23a, 30 hole

Claims (6)

An arm rotatably attached to a base and an engaging portion engageable with the arm are fixed to the base and the engaging portion on a door frame or a door provided on the door frame. A door guard having a hole for attaching by means of a tool , wherein the arm is disposed along the surface of the door ,
The hole portion of any one of the base and the engagement portion is a long hole, and a long diameter side thereof is formed along the axial direction of the arm,
The base has a standing wall piece that is opposed to the protrusion of the engaging portion and extends in a direction orthogonal to the axial direction of the arm, and the arm contacts with the arm when the door frame is locally deformed. Door Guard, characterized in that there. Long diameter side of the front SL slot is at least clearance the engagement portion and the upstanding wall piece equivalent to the length obtained by subtracting the clearance the base or the engagement in the clearance in the same direction from between the door frame and the door The door guard according to claim 1, wherein the door guard has a length for moving the joint portion. An arm rotatably attached to a base; an engaging portion engageable with the arm; and a contact portion that contacts the engaging portion when the door frame is locally deformed .
In the base guard and the engaging portion, in the door guard having a hole for attaching to the door frame or a door provided on the door frame by a fixing tool,
The hole portion of one of the base and the engaging portion is a long hole, and in a state where the arm is disposed along the surface of the door, the long diameter side is along the axial direction of the arm. Formed,
The depth from the mounting surface of the fixture facing the back surface of the head of the fixture to the lower surface of the base or the engaging portion is shallower at one end on the longer diameter side than the other end on the longer diameter side. A door guard characterized by that. The door guard according to claim 3 , wherein the mounting surface of the fixture exists on the same plane. The door guard according to claim 3 , wherein the mounting surface of the fixture is formed with a step. The long diameter side of the long hole is at least from the clearance between the door frame and the door.
The length by subtracting the clearance between the engagement portion and the contact portion in the same direction as the Alance
The door according to claim 3, which has a length for moving the base or the engaging portion.
Agard.

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