JP5283218B2 - Door guard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door guard which enables the locking and unlocking of a door to be easily performed separately from a door key, and can regulate the opening of the door to a position corresponding to a predetermined position or larger. <P>SOLUTION: The door guard 1 includes an arm device 10 which is provided in a frame body 200 or a door member 100, and an engaging device 20 which is provided in the door member 100 or the frame body 200 at the other side and regulates the opening of the door member 100 in an arbitrary position while being engaged with the arm device 10. The arm device 10 comprises a slidably-supported arm member 12, and a slide mechanism 30 which makes the arm member 12 slide in the direction of getting close to or getting away from the engagement device 20. The slide mechanism 30 makes the arm member 12 engaged with at least a part of the frame body 200 or the door member 100 in a state of getting close to the engaging device 20. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a door guard that restricts opening of a door.

Conventionally, a pivotable lever is provided on the door D side, a receiving member is provided on the door frame (around the door) side, and the lever is tilted to the receiving member (locking position) side to engage with an engaging groove provided on the lever. An invention is disclosed in which, when the door is opened, the lever is brought into contact with a predetermined terminal portion and further opening of the door is prevented by engaging the tool (see, for example, Patent Document 1). Furthermore, the invention disclosed in Patent Document 1 is an invention that includes a holding portion that is biased toward the receiving side, and prevents the lever from being turned to the unlock position side when the door is closed. is there.
JP 2005-9083 A

  However, in the invention disclosed in Patent Document 1 described above, in order to lock the door, it is necessary to turn the lever and tilt it to the receiving side (in particular, the invention disclosed in Patent Document 1 includes a holding portion). There is a problem that it takes time and effort to pull the lock release part to release the lever.

  Moreover, in the invention disclosed in Patent Document 1, the door opens to a predetermined position, so that there is a problem that the inside of the door D can be seen.

  In view of such circumstances, an object of the present invention is to provide a door guard capable of easily locking and unlocking a door separately from a door key and restricting the opening of a door at a predetermined position or more.

  The above object can be achieved by the following means based on the earnest research of the present inventors.

(1) The present invention provides an arm device provided on a frame body or a door member, and is provided on the door member or the frame body on the other side, and engages with the arm device while the door at an arbitrary position. An engagement device for restricting the opening of the member, and the arm device is supported so as to be rotatable and slidable, and the arm member is slid in a direction toward or away from the engagement device. A slide mechanism that causes the arm member to engage with at least a part of the frame body, the door member, or the engagement device in a state of being close to the engagement device by the slide mechanism. This is a door guard characterized by that.

(2) In the present invention, the arm member also includes a plurality of engagement pieces projecting in the direction of the engagement device, and the plurality of engagement pieces are the frame body, the door member, or the engagement device. The door guard according to (1), wherein the door guard is engaged with at least a part of the door guard.

  (3) In the present invention, the plurality of engagement pieces include at least a first engagement piece and a second engagement piece, and an interval between the first engagement piece and the second engagement piece is: The door guard according to (2), wherein the door guard is formed so as to be wider than a plate thickness of the first engagement piece or a plate thickness of the second engagement piece.

  (4) The present invention further includes a slide suppression mechanism that suppresses sliding of the arm member in a state where the arm member is close to the engagement device. It is a door guard in any one of 3).

  (5) In the present invention, the arm member is formed in a substantially U shape, and the first engagement piece and the second engagement piece are formed at the U-shaped opening end. It is a door guard as described in (3).

  (6) The present invention is also the door guard according to (5), wherein the arm member is provided with a reinforcing member between the U-shapes to prevent the arm member from bending.

(7) The present invention is also characterized in that the arm device further includes latch means for locking the arm member at a predetermined position on the slide path and the rotation path. a Door Guard according to any one of 6).
(8) In the present invention, the slide mechanism includes a long hole that guides the arm member in the horizontal direction, and the latch means is provided at both ends in the longitudinal direction of the long hole, and the top and bottom of the long hole are The door guard according to (7), wherein the door guard is provided in a direction.
(9) The present invention is the door guard according to (8), wherein the latch means is a concave portion having a slope inclined from the elongated hole.

  ADVANTAGE OF THE INVENTION According to this invention, the outstanding effect that the door guard which can control the door opening of a door easily with respect to a door frame can be provided can be show | played.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  A first embodiment of the present invention will be described with reference to FIG. The figure is a perspective view showing a case where the door guard 1 according to the first embodiment is in an open position.

  The door guard 1 includes an arm device 10 provided on the door 100 (also referred to as a door member) side and an engagement device 20 provided on the door frame 200 (sometimes referred to as a frame) side. Has been.

  The arm device 10 further includes an arm member 12 and an arm base 16. The arm member 12 is pivotally supported by the arm base 16 and can be rotated in the opening / closing direction of the door 10 (in the direction of arrow A or B in the figure).

  The arm member 12 is made of a metal such as iron or a non-ferrous metal such as an aluminum alloy, and is a substantially U-shaped member. The arm member 12 has an engagement groove 13 formed inside the U-shape, and a pair of engagement pieces 14 and 14 (first engagement piece 14A and second engagement piece) on the U-shaped end side. 14B) is formed. It is preferable that the distance between the pair of engagement pieces 14 and 14 is larger than at least the plate thickness of the member forming the engagement pieces 14. In the present embodiment, the two engagement pieces 14 are provided on the U-shaped opening end side. However, the engagement pieces 14 are engaged with a part of an engagement device 20 (or door frame 200) described later. As long as the door 100 can be prevented from being opened by a predetermined force, the present invention is not limited to this. For example, it is preferable to provide a plurality of engaging pieces on the opening end side of the U-shaped arm member 12, and to provide at least one engaging piece having a width wider than the thickness of the engaging piece 14. Even preferred.

  The engagement groove 13 is formed with an opening 13a closer to the engagement piece 14 side, and further, the guide groove 13b having a groove width narrower than the opening 13a is continuous with the opening 13a. It is formed to extend to the vicinity. Further, a locking groove 13c is provided in the vicinity of the end of the guide groove 13b. As will be described in detail later, when the engaging device 20 is rotated in the direction of the arm member 12, the head 22a of the merging device 20 first engages with the opening 13a, and then opens the door 100. Accordingly, while engaging with the guide groove 13b of the arm member 12, the door 100 moves relative to the guide groove 13b and stops at the position where it has moved to the locking groove 13c. Be regulated.

  Further, the arm member 12 has a slide groove 12 d formed on the side surface near the base of the engagement piece 14. The slide groove 12d is a long hole-shaped groove provided in a predetermined range (about 2 cm in this embodiment) from the tip of the engagement piece 14 to the base side, and the axis of the arm base 16 described later. The pin 17 is slidably engaged with the slide groove 12d, so that the arm member 12 can slide in the direction of the engagement device 20 along the slide groove 12d.

  The arm base 16 is made of a metal such as iron or a non-ferrous metal such as an aluminum alloy, and is a substantially U-shaped member having a pair of opposing side walls 16a and 16a. The arm base 16 is fixed to the door 100 by a plurality of bolts 600 (three in this embodiment). A pair of side walls 16a, 16a of the arm base 16 is provided with a hole 16b at a position substantially opposite to the slide groove 12d of the arm member 12, and a shaft pin 17 is inserted into the hole 16b. The shaft pin 17 is inserted into the hole 16b and the slide groove 12d, and is locked by a C ring 18 or the like on the opposed surface side of the pair of opposed slide grooves 12d and 12d. Therefore, the arm member 12 can slide in the direction of the engaging device 20 along the slide groove 12d with respect to the arm base 16. A mechanism for sliding the arm member 12 by relative movement of the shaft pin 17 and the slide groove 12d is referred to as a slide mechanism 30.

  Next, the engagement device 20 includes a catch 22 and a catch base 24. The catch 22 is pivotally supported by the catch base 24 and is rotatable in the direction of the arm device 10 (the direction of the arrow C or D in the figure).

  The catch 22 is made of a metal such as iron or a non-ferrous metal such as an aluminum alloy, and is a substantially columnar member. When the catch 22 rotates in the direction of the arm device 10, the catch 22 has an umbrella-shaped head portion 22 a at the end located on the arm device 10 side, and a hole (not shown) is provided near the end on the other end side. Is formed.

  The catch base 24 is made of a metal such as iron or a non-ferrous metal such as an aluminum alloy, and is a substantially L-shaped member. The catch base 24 has a pair of J-shaped arms 24b and 24b extending from the bottom surface 24a, and the J-shaped arm 24b is bent in a J-shape on the tip side. A hole 24c is formed at a position facing the portion (not shown). A fixing hole 24d is formed in the vicinity of the base of the J-shaped arm 24a provided upright on the bottom surface 24a, and is fixed to the door frame 200 with bolts 25 or the like.

  By combining the hole 24c of the catch base 24 and the hole (not shown) of the catch 22 in a concentric state and inserting the shaft pin 26, the catch 22 is pivotally supported with respect to the catch base 24. The shaft pin 26 is fixed by a C ring (not shown) or the like on the other end side (the side opposite to the insertion direction) of the catch 22.

  Further, an engagement plate 24e is provided on the tip end side of the J-shaped arm 24b bent in a J shape. When the arm member 12 is slid in the direction of the engagement device 20 as described above, the engagement piece 14 of the arm member 12 is engaged with at least a part of the engagement plate 24e.

  <Door opening control action>

  Next, a regulation operation for regulating the opening of the door 100 by the door guard 1 will be described. FIG. 2 is a perspective view showing the case where the door guard 1 is in the restriction position, and FIG. 3 is a perspective view in the case where the door guard 1 is in the locking position.

  First, when the door guard 1 restricts the opening of the door 100, the arm member 12 and the catch 22 are rotated in the respective directions, and the door opening restriction position L (see FIG. 2) from the door opening possible position U (see FIG. 1). ) Must be moved. Specifically, in a state where the door 100 is completely closed, the catch 22 is first rotated about 180 degrees from the openable position U in the direction of the arm device 10 (the direction of arrow C shown in FIG. 1). knock down. Next, when the arm member 12 is turned about 90 degrees from the door opening possible position U in the direction of the engagement device 20 (arrow A direction shown in FIG. 1), the head portion 22a of the catch 22 It will be in the state which can be engaged with the opening part 13a. In the present embodiment, at the door opening restriction position L, the head portion 22a and the opening portion 13a are not yet engaged, and thereafter the door 100 is opened (moved in the direction of arrow E shown in FIG. 2). ), The head portion 22a is guided along the guide groove 13b while engaging with the guide groove 13b from the opening 13a, and stops at the lock groove 13c (door lock position S described later). When the head portion 22a reaches the locking groove 13c, the head portion 22a cannot move any more in the distal direction of the arm member 12. That is, the door 100 cannot be opened any more.

  Of course, the order in which the arm member 12 and the catch 22 are rotated is not limited to this embodiment. The arm member 12 is first rotated in the direction of the engagement device 20 and then the catch 22 is moved in the direction of the arm device 10. The arm member 12 and the catch 22 may be engaged by rotating.

  Next, when the door 100 is opened from the state shown in FIG. 2 (the door 100 is opened in the direction of arrow E), the arm device 10 rotates together with the door 100 in the direction of arrow E with respect to the engagement device 20. As the arm device 10 rotates, the head portion 22a of the catch 22 moves relative to the opening 13a and is guided from the opening 13a to the guide groove 13b (see FIG. 1).

  When the door 100 is further opened, the head portion 22a is guided to the locking groove 13c while being engaged with the guide groove 13b (see FIG. 3). The locking groove 13c has an R-shaped end (see FIG. 1), and the head portion 22a comes into contact with the end of the locking groove 13c. Thereby, the head portion 22a is further restricted from moving in the distal direction of the arm member 12. That is, when the door 100 is opened and the head portion 22a is introduced to the locking groove 13c (locking position S), the door 100 cannot be opened any more. The position where the head portion 22a is stopped is referred to as a door locking position S.

  <Door lock operation>

  Next, the locking operation for preventing the door 100 from being opened by the door guard 1 will be described with reference to FIG. 1A is a perspective view showing the case where the door guard 1 is in the openable position U, and FIG. 1B is a perspective view showing the case where the door guard 1 is in the lock position R. FIG. is there.

  Here, the openable position U will be defined again. The openable position U referred to in this specification is a state in which the arm member 12 is not engaged with the engagement device 20 (or the door frame 200) in a state in which the door 100 is completely closed. In this state, the door frame 200 is openable.

  The arm member 12 is engaged with the engagement device 20 by sliding the slide groove 12d with respect to the shaft pin 17 from the state where the arm device 10 and the engagement device 20 are in the openable position U (see FIG. 4A). It can be slid in the direction (arrow G direction) (in this embodiment, the engagement device 20 may not be in the door opening possible position U).

  Thereafter, when the engagement piece 14 of the arm member 12 reaches the position of the engagement plate 24e of the catch base 24, the arm member 12 slides while engaging with the engagement plate 24e of the catch base 24 and engages at a predetermined position. The step-shaped contact portion 14a formed on the piece 14 is in contact with the end of the engagement plate 24e so that the arm member 12 cannot slide in the direction of the engagement device 20 any more. The position where the contact portion 14a of the engagement piece 14 and the end portion of the engagement plate 24e are in contact is referred to as a lock position R (see FIG. 4B).

  At the lock position R, the engagement piece 14 and the engagement plate 24e are engaged with each other in a substantially tight contact state. Therefore, when the door 100 is opened, the engagement piece 14 is prevented from moving by the engagement plate 24e. The door 100 cannot be opened. Therefore, at the lock position R, the door 100 is in a state where it cannot be opened at all.

  Therefore, the door 100 can be easily opened by simply sliding the arm member 12 in the direction of the engagement device 20 without locking the door with a door key (not shown) provided on a normal door knob (not shown). Can be prevented. On the other hand, the arm member 12 is slid in the opposite direction to the engagement device 20 to bring the arm member 12 to the door opening possible position U, so that the lock can be easily released.

  In other words, the door guard 1 according to the present embodiment can make the door 100 unopenable in a single step of sliding the arm member 12 to the lock position R. A common member (arm device 10 and engagement device 20) can realize two functions: a door guard function that restricts the position of the door and a lock function that completely locks the door so that it does not open at all.

  Further, when it is desired to slightly open the door 100 in order to interact with a person outside the door 100 or to change the air in the room, the arm member 12 and the catch 22 are moved to the opening restriction position as described above. By setting it to L, it can restrict | limit so that the door 100 may not open more than fixed.

  It is preferable that a predetermined gap is provided between the contact portion 14a and the engagement plate 24e so that the engagement piece 14 can be rotated with respect to the engagement plate 24e by the gap. In this case, a resident in the room can see the outside from the gap of the door 100 that is slightly opened.

  The door guard 1 includes an arm device 10 supported by a door frame 200 (frame body) or a door 100 (door member) pivotally supported so as to open and close an opening of the door frame 200, and a door on which the arm device 10 is supported. And an engagement device 20 rotatably supported by the door 100 or the door frame 200 which is the other side of the frame 200 or the door 100. Further, the arm device 10 is provided with an arm member 12 that can be rotated and slidable, and a slide mechanism 30 (from the shaft pin 17 and the slide groove 12d) that slides the arm member 12 in a direction in which the arm member 12 approaches or separates from the engagement device 20. A slide mechanism of the arm member 12 is further provided. Thereby, the arm member 12 slid by the slide mechanism 30 can be engaged with the engagement device 20 to prevent the door 100 from being opened and closed.

  The arm member 12 has a pair of engagement pieces 14 and 14 protruding in the direction of the engagement device 20. Therefore, even when the door 100 is opened by a large force by the arm member 12 sliding and the pair of engaging pieces 14 and 14 engaging with the engaging plate 24e of the engaging device 20, the door 100 is opened. It can be reliably prevented.

  The pair of engaging pieces 14 and 14 includes at least two engaging pieces, that is, a first engaging piece 14A and a second engaging piece 14B. Moreover, it is comprised so that the space | interval of 14 A of 1st engagement pieces and the 2nd engagement piece 14B may become wider than the plate | board thickness which comprises 14A of 1st engagement pieces or the 2nd engagement piece 14B. Therefore, rather than pressing the door 100 with one engaging piece, the door 100 can be pressed with two engaging pieces that are spaced apart from each other, and the door 100 can be reliably prevented from opening.

  Further, since the arm member 12 is formed in a substantially U shape, and the first engagement piece 14A and the second engagement piece 14B are formed at the end of the U-shaped opening, two engagements separated by a certain distance are formed. The door can hold the door 100 and can reliably prevent the door 100 from being opened.

  The arm member 12 includes an engagement groove 13 provided so as to extend in the distal direction of the arm member 12, and the engagement groove 13 includes an opening 13a into which the head portion 22a of the catch 22 is inserted, and a door. When opening 100, it has the guide groove 13b which guides the head part 22a to the position which controls the opening of the door 100, engaging with the head part 22a. Therefore, the head portion 22a is smoothly guided by the opening portion 13a and the guide groove 13b, and can lock the door 100 at a predetermined open position.

  Further, the arm member 12 of the arm device 10 is rotatable between at least an openable position U at which the door 100 can be opened and an open restriction position L at which the opening of the door 100 is restricted. The catch 22 of the engagement device 20 is engaged with the arm member 12 by rotating in the direction of the arm device 10 when the arm member 12 is in the door opening possible position U, and the door 100 is opened. By locking at a predetermined door locking position S with the arm member 12 and the catch 22 engaged, further opening of the door 100 is restricted. Further, when the door 100 is closed and the arm member 12 is in the openable position U, the arm member 12 is slid to the door lock position R in the direction of the engagement device 20 by the slide mechanism 30. At the door lock position R, the arm member 12 engages with at least a part of the door 100 or the door frame 200 on the other side to prevent the door 100 from opening. Therefore, the door 100 can be slightly opened and fixed at a predetermined position with the same arm member 12, and the door 100 can be completely prevented from being opened only by sliding the arm member 12.

  Next, the door guard 2 according to the second embodiment will be described with reference to FIG.

  FIG. 4A is a perspective view when the door guard 2 according to the second embodiment is in the lock position R, and FIG. 4B is a perspective view when the arm member 12 of the door guard 2 is in a fixed state. FIG.

  In the door guard 2, the arm member 12 is provided with a stopper piece 12f. When the catch 22 is rotated about 180 ° at the lock position R, the stopper piece 12f of the arm member 12 and the engagement groove 22b of the catch 22 are engaged. It is supposed to be. Thereby, the arm member 12 is characterized in that it is provided with a mechanism (sometimes referred to as a stopper device 40 or a slide suppression mechanism) that prevents the arm member 12 from sliding in the opening direction (the direction opposite to the engagement device 20).

  In addition, about each apparatus of the arm apparatus 10 and the engaging apparatus 20, about the member which has the same function and shape, the same code | symbol as 1st Embodiment is attached | subjected and detailed description etc. are abbreviate | omitted.

  The arm device 12 includes stopper pieces 12f and 12f in the vicinity of the pair of engaging pieces 14 and 14. The pair of stopper pieces 12f, 12f is a piece-like member that is erected so as to face the two engaging pieces 14, 14. When the catch 22 is rotated in the direction of the arm device 10, the engagement of the catch 22 is increased. It is provided at a position where it can engage with the mating groove 22b.

  <Stopper operation>

  First, at the door opening possible position U (see FIG. 1), the arm member 12 is slid in the direction of the engagement device 20 by the slide mechanism 30 and moved to the lock position R shown in FIG.

  Next, the catch 22 is rotated by about 180 ° in the direction of the arm member 12 and tilted so that the engagement groove 22b formed in the catch 22 is engaged with the gap between the pair of stopper pieces 12f and 12f.

  In this state, even if the arm member 12 is slid in the door openable position direction, the umbrella-shaped portion of the head portion 22a comes into contact with the pair of stopper pieces 12f and 12f. It is in a state where it cannot slide easily (in the direction opposite to the engagement device 20).

  Therefore, even if the door member 100 is vibrated or the arm member 12 at the lock position R is slid to the openable position U by other unauthorized means, the arm member 12 is not contacted with the stopper piece 12f and the catch 22. Since it is in contact and locked, sliding can be prevented.

  As described above, the stopper device is configured by an engagement mechanism of the pair of stopper pieces 12f and 12f disposed to face each other and the engagement groove 22b that engages with the gap between the opposed stopper pieces 12f and 12f. 40 (sliding suppression mechanism) can prevent the arm member 12 in the locked state from sliding.

  Also, the arm device shown in the first embodiment may be provided with a latch means 50 so that the arm member can be latched at a predetermined position.

  FIG. 6A is an enlarged perspective view of a part of the arm device 310 according to the third embodiment, as viewed from the direction of arrow I shown in FIG. 1 (direction of the engagement piece 14). In the figure, illustrations and numbers are omitted for members and devices not directly related to the description of the latch means 50, and members and devices having the same shape, function, and application are given the same numbers. Further, a part of the arm base 316 is shown as a fracture surface (shaded portion).

  The arm device 310 includes an arm member 312 and an arm base 316.

  A slide groove 313 is formed in the longitudinal direction on the side surface of the arm member 312. A long hole 313a is formed in the slide groove 313, and a first horizontal latch recess 52 and a second horizontal latch recess 54 (see FIG. 7) are formed at both ends of the slot 313a. In addition, vertical latch recesses 56 are formed in the vertical direction of the slide groove 313, respectively. The vertical latch recess 56 is a substantially rectangular recess.

  The first horizontal latch recess 52 and the second horizontal latch recess 54 are inclined toward the first horizontal latch recess 52 and the second horizontal latch recess 54 from the vicinity of both ends in the longitudinal direction of the elongated hole 313a (become slope-like). Are connected by a slope 52A and a slope 54A. Further, an inclined surface 56 </ b> A that gently slopes from the side surface of the arm member 312 toward the center of the vertical latch recess 56 is provided on the recess side wall of the vertical latch recess 56.

  On the side wall 316a of the arm base 316, a latch member accommodating portion 316b for accommodating a latch member 70 (details will be described later) is provided. The upper surface of the latch member accommodating portion 316b is open so that the latch member 70 can be inserted.

  In addition, the surface of the side wall 316a facing the arm member 312 is provided with a square hole 316c for exposing the latch convex portion 72 provided on the latch member 70 from the side wall 316a when the latch member 70 is inserted. (See FIG. 6C). As in the first embodiment, the side wall 316a is provided with a hole 316d so that the pin 17 can be inserted therethrough.

  As shown in FIG. 6B, the latch member 70 is made of resin and has a substantially U-shaped cross section. The latch member 70 has two latch projections 72 and 72 provided in parallel on one end side, and an urging member accommodating portion 74 is formed on a surface opposite to the two latch projections 72 and 72. ing. Part of the urging member 80 such as a compression spring is accommodated in the urging member accommodating portion 74. The latch member 70 is provided with a hole 76 at a position corresponding to the hole 316d of the side wall 316a when the latch member 70 is received in the latch member accommodating portion 316b of the side wall 316a. That is, when the latch member 70 is accommodated in the latch member accommodating portion 316b of the side wall 316a, the hole portion 316d of the side wall 316a and the hole portion 76 of the latch member 70 are substantially concentric and penetrated, and the pin 17 is inserted. It can be done. Therefore, since the latch member 70 is locked by the pin 17, it cannot be removed from the latch member accommodating portion 316b.

  The two latch protrusions 72, 72 are substantially rectangular protrusions, and are provided substantially in parallel on both sides of the hole 76 of the latch member 70. Further, the interval between the two latch protrusions 72, 72 is the same as the interval between the two vertical latch recesses 56, 56 described above. Therefore, as will be described in detail later, when the arm member 312 is rotated 90 ° in the A direction, the two latch protrusions 72 and 72 are fitted and locked into the two vertical latch recesses 56 and 56 ( To latch).

  In addition, a slope 72A is formed around the latch convex portion 72 of the latch member 70 so as to spread from the convex upper surface of the latch convex portion 72 in the root direction. As a result, as will be described in detail later, when the arm member 312 is pulled out from the state (latched state) in the first horizontal latch recess 52, the second horizontal latch recess 54, and the vertical latch recess 56, the latch projection 72 Since the slope 72A rises along the slope 52A, slope 54A, and slope 56A, the first horizontal latch recess 52, the second horizontal latch recess 54, and the vertical latch recess 56 can be overcome with a substantially constant light force.

  As shown in FIG. 4B, when the latch member 70 is inserted together with the biasing member 80 into the latch member accommodating portion 316b of the side wall 316a, the latch member 70 is accommodated up to a predetermined position of the latch member accommodating portion 316b. The The latch member 70 is urged toward the latch convex portion 72 by the urging member 80. Thereby, the latch convex part 72 can be exposed from the side wall 316a by inserting the latch member 70 in the latch member insertion groove 316b of the side wall 316a.

  As described above, the latch member 70 is biased toward the latch convex portion 72 by the biasing member 80 such as a spring. Therefore, the latch convex portion 72 has a latch member accommodating portion 316b so as to have elasticity. Can be moved in the direction of being accommodated or protruding (the front-rear direction of the latch protrusion 72). Therefore, for example, when the arm member 312 is rotated to engage the latch convex portion 72 with the vertical latch concave portion 56, the latch convex portion 72 is pushed into the latch member accommodating portion 316b while the arm member 312 is rotating. At the position where the arm member 312 is rotated by 90 °, the latch protrusion 72 is pushed by the urging member 80 and protrudes. As a result, the operator can rotate the arm member 312 while feeling little rotational load while the arm member 312 is rotating. When the arm member 312 is rotated to a predetermined position, the latch protrusion 72 is clicked. The feeling of popping out is transmitted, and a refreshing feel can be obtained. The urging member 80 also plays a role of locking the latch member 70 by pressing the latch member 70 against the latch member accommodating portion 316b of the side wall 316a.

  The above-described latch structure of the arm member 312 by the first horizontal latch recess 52, the second horizontal latch recess 54, the vertical latch recess 56, and the latch protrusion 72 is referred to as a latch means 50.

  In this embodiment, the latch member 70 is a separate member, and the latch member 70 is accommodated in the side wall 316a so that the latch protrusion 72 is exposed from the side wall 316a. However, the present invention is of course limited to this. is not. For example, the latch protrusion 72 may be directly formed on the side wall 316a, or the latch protrusion 72 of another member may be assembled to the side wall 316a. In this case, it is desirable to provide elasticity like the urging member 80 to the latch protrusion 72.

  <Latch operation>

  Next, the latch operation by the latch means 50 will be described with reference to FIGS.

  FIG. 7A shows a state in which the arm member 312 can slide in either the arrow G direction or the H direction along the elongated hole 313a.

  First, when the door 100 is locked by the arm member 312, the arm member 312 is slid in the direction of arrow G shown in FIG. When the arm member 312 moves in the direction of the arrow G, the latch convex portion 72 on the left side of the paper moves in the direction of the arrow G along the slope 54A of the second horizontal latch recess 54, and by the biasing member 80 by the height difference of the slope 54A. Extruded in the bottom direction (backward direction). Thereby, the latch convex part 72 engages with the 2nd horizontal latch recessed part 54, and the operator can obtain the latch feeling called clicking (refer the figure (b)).

  Next, when the door 100 is unlocked by the arm member 312 (when the latch projection 72 is moved out of the latch position by the second horizontal latch recess 54), the arm member 312 is moved from the state shown in FIG. Slide in the direction of arrow H shown in FIG. When the arm member 312 is slid in the arrow H direction from the state shown in FIG. 5B, the slope 72A of the latch convex portion 72 on the left side of the paper comes into contact with the slope 54A of the second horizontal latch concave portion 54. When the arm member 312 is further slid by applying a force, the latch convex portion 72 rises along the inclined surface 54A. At this time, the pressing force received from the inclined surface 54A overcomes the urging force of the urging member 80, and the latch convex portion 72 is gradually pushed along the height difference of the inclined surface 54A in the direction of being accommodated in the latch member accommodating portion 316b. In other words, the latch protrusion 72 locked to the second horizontal latch recess 54 rises while the slope 72A of the latch protrusion 72 is pushed in along the slope 54A of the second horizontal latch recess 54. The pressing force received from 54A can be moved substantially constant, and when escaping from the second horizontal latch recess 54, sliding can be performed smoothly without requiring a large force.

  Further, when the arm member 312 is slid in the direction of the arrow H, the latch convex portion 72 on the right side of the paper moves in the direction of the arrow H along the slope 52A of the first horizontal latch recess 52, and the biasing member is increased by the height difference of the slope 52A. 80 is gradually pushed out toward the bottom surface. Thereby, the latch convex part 72 engages with the 1st horizontal latch recessed part 52, and the operator can obtain the latching feeling called clicking similarly to the time of the locking mentioned above (refer the figure (c)).

  Next, when the arm member 312 is slid from the unlock position (when the latch protrusion 72 is moved out of the latch position by the first horizontal latch recess 52), the arm member 312 is shown in FIG. ) In the direction of arrow G shown in FIG. When the arm member 312 is slid in the arrow G direction from the state shown in FIG. 5C, the slope 72A of the latch convex portion 72 on the right side of the paper comes into contact with the slope 52A of the first horizontal latch concave portion 52. When the arm member 312 is further slid by applying a force, the latch convex portion 72 rises along the inclined surface 52A. At this time, the pressing force received from the inclined surface 52A overcomes the urging force of the urging member 80, and the latch convex portion 72 is gradually pushed along the inclined surface 52A in the direction of being accommodated in the latch member accommodating portion 316b. In other words, the latch protrusion 72 locked to the first horizontal latch recess 52 rises while the inclined surface 72A of the latch protrusion 72 is pushed in along the inclined surface 52A of the first horizontal latch recess 52. The pressing force received from 52A can be moved substantially constant, and when escaping from the first horizontal latch recess 52, sliding can be performed smoothly without requiring a large force.

  As can be seen from the above description, the latch protrusion 72 has a slope 72A, the first horizontal latch recess 52 has a slope 52A, and the second horizontal latch recess 54 has a slope 54A, and the arm member 312 is slid. In this case, first, since each inclined surface comes into contact, the latch convex portion 72 can easily get over each latch concave portion 52, 54, and the arm member 312 can be smoothly latched and released from the latch position. it can.

  Next, a case where the arm member 312 is rotated and used as a so-called door guard will be described with reference to FIG.

  First, when the arm member 312 is rotated in the direction of arrow A from the state shown in FIG. 5A, the latch convex portion 72 of the side wall 316a is fitted into the vertical latch concave portion 56 of the arm member 312. As described above, since the slope 56A is provided in the vertical latch recess 56, the slope 72A of the latch projection 72 moves in contact with the slope 56A of the vertical latch recess 56, and the latch projection 72 By the pressing force of 56A, the latch member accommodating portion 316b is gradually pushed along the inclined surface 56A. Therefore, the arm member 312 can move smoothly from the state shown in FIG. In the case of returning from the state of FIG. 5B to the state of FIG. 5A, the operation opposite to that described above may be performed, and detailed description thereof is omitted. When the latch convex portion 72 is escaped from the latch position, the inclined surface 72A of the latch convex portion 72 abuts on the inclined surface 56A of the vertical latch concave portion 56, and the latch convex portion 72 moves along the inclined surface 56A. Therefore, the operator can smoothly rotate the arm member 312 after a certain time.

  It should be noted that when the arm member 312 is rotated, a part of the arm member 312 (for example, the R part 312A) does not rub against the arm base 316, as shown in the R part 312A of the arm base 316 (shown in FIG. 8A). It is preferable to provide a relief groove (not shown) in a range that rubs against the shaded portion.

  Specifically, the arm member 312 is slidable and can be rotated when used as a normal door guard, so that the R portion 312A of the arm member 312 is the bottom surface of the arm base 316. May rub. In this case, the surface of the R portion 312A having the thickness becomes rubbed with the surface of the arm base 316, so that the rotational resistance increases. Therefore, by providing a clearance groove (not shown) in the portion of the arm base 316 that rubs against the R portion 312A of the arm member 312, the R portion 312A of the arm member 312 does not contact the arm base or the contact area is reduced. Thus, the arm member 312 can be smoothly rotated.

  Therefore, as described above, the door guard arm device 310 according to the third embodiment is provided with the latch means 50, so that the arm member 312 can be smoothly moved to a predetermined latch position and at a predetermined position. It is possible to obtain a latching sensation that can be confirmed that the movement has been reliably performed.

  In addition, the first horizontal latch recess 52, the second horizontal latch recess 54, the vertical latch recess 56, and the latch projection 72 of the latch means 50 are provided with slopes 52A, 54A, 56A and a slope 72A, respectively. The member 312 can easily move to the latched position and can escape from the latched position.

  Further, since the latch member 70 is biased by the biasing member 80 so as to protrude outward from the side wall 316a, the arm member 312 can be easily slid with a constant force from a predetermined latch position. , You can get a more sloppy latch feeling.

  The present invention can be used in the field of door guards that restrict the opening of doors.

It is a perspective view which shows the case where the door guard 1 which concerns on 1st Embodiment exists in an open position. It is a perspective view which shows the case where the door guard 1 exists in a control position. It is a perspective view in case the door guard 1 exists in a latching position. (A) It is a perspective view which shows the case where the door guard 1 exists in the open position L, (b) It is a perspective view which shows the case where the door guard 1 exists in the lock position R. (A) It is a perspective view in case the door guard 2 which concerns on 2nd Embodiment exists in the open position L, (b) It is a perspective view in case the arm member 12 of the door guard 2 exists in a fixed state. (A) It is the perspective view which expanded a part of arm device 310 concerning a 3rd embodiment, (b) The exploded perspective view showing the state where latch member 70 and pin 17 were disassembled from arm base 316 of the arm device 310 (C) FIG. 6 (a) is a cross-sectional view of the arm device 310 as viewed from the direction of arrows II-II. (A) It is a side view of the arm member 312 and the arm base 316 showing a substantially intermediate position of the arm member 312 of the arm device 310, and (b) an arm showing the latched position of the arm member 312 of the arm device 310 in the locked state. It is a side view of the member 312 and the arm base 316, (c) is a side view of the arm member 312 and the arm base 316 showing the latched position of the arm member 312 of the arm device 310 in the released state. (A) It is a side view of the arm member 312 and the arm base 316 which show the substantially intermediate position of the arm member 312 of the arm apparatus 310, (b) The arm member 312 which shows the state which rotated the arm member 312 of the arm apparatus 310 FIG. 6 is a side view of the arm base 316.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door guard 10 Arm apparatus 12 Arm member 13 Engagement groove 13a Opening part 13b Guide groove 13c Locking groove 14 Engagement piece 16 Arm base 20 Engagement device 22 Catch 22a Head part 30 Slide mechanism 40 Stopper device 50 Latch means 100 Door 200 Door frame U Openable position L Opening restriction position S Door lock position R Lock position

Claims (6)

An arm device provided on one of the frame or the door member;
Provided on the other of the frame or the door member, Bei example and a engaging device for limiting the opening of the door member at a predetermined open position relative to the frame body by engaging with said arm device,
The arm device is
An arm member rotatably and slidably supported;
And a slide mechanism for enabling sliding the arm member in a direction causing close to or away against the engagement device,
The arm member is
A locking position that disables opening of the door member relative to the frame body by engaging with at least a part of the frame body or the other of the door member , or at least a part of the engagement device ; A door guard characterized by being slidable at least between an unlock position enabling opening of the door member . The arm member has a plurality of engagement pieces protruding in the direction of the engagement device,
The locked position is characterized in that said plurality of engaging pieces and the other at least a part of said frame body or said door member, or a position to engage at least a portion of the engagement device,
The door guard according to claim 1. The plurality of engagement pieces have at least a first engagement piece and a second engagement piece,
The distance between the first engagement piece and the second engagement piece is formed so as to be wider than the plate thickness of the first engagement piece or the plate thickness of the second engagement piece. To
The door guard according to claim 2. The arm member is formed in a substantially U shape, and the first engagement piece and the second engagement piece are formed at an end of the U-shaped opening,
The door guard according to claim 3. The arm device further includes latch means for locking the arm member at a predetermined position on the slide path and the rotation path ,
The slide mechanism includes a long hole for guiding the arm member in a horizontal direction,
The latch means is provided at both ends in the longitudinal direction of the elongated hole and in the vertical direction,
The door guard in any one of Claims 1-4 . The latch means includes a recess having a slope inclined from the slot.
The arm member slides along the slope and engages with the recess of the latch means;
The door guard according to claim 5 .

Images