JP4625122B2 - Door to door - Google Patents

Description

  The present invention relates to a door stop that locks a hinged door in a fully open position by attracting a magnetic latch receiving device installed on a floor surface with a magnet provided in a lock device installed in a lower portion of the hinged door.

  In general, if the door block has a structure that protrudes from the floor, it may cause injury by accidentally kicking the protruding door block, moving furniture, etc., or interfering with floor cleaning. There was no problem.

Therefore, in a conventional door stop, for example, as shown in FIGS. 10 and 11, a base plate 3 is fixed to a pedestal 3 fixed to a floor 2 with a magnetic metal plate 1 having a locking hole 1 a at the tip. The locking device 5 is fixed to the lower part of the hinged door 4, the magnet 6 is mounted in the case 5 a of the locking device 5, and is locked in the locking hole 1 a of the plate 1. The stopper 7 and the operation button 8 of the stopper 7 are housed and held so as to be movable up and down via a compression coil spring 9, and when used, the operation button 8 is pushed down with a foot or a hand to lock the stopper 7 downward. When the hinged door 4 reaches the fully open position after protruding to the height position, the magnet 1 attracts the plate 1 to lock the lower end 7a of the stopper 7 in the locking hole 1a, and locks the hinged door 4 in the fully opened position. On the other hand, if you later unlock When the operation button 8 is pushed down again with a foot or hand, the stopper 7 is unlocked and lifted from the lock height position, and the lower end 7a is released from the locking hole 1a so that the door 4 is unlocked. (See Patent Document 1).
JP 2008-190314 A JP 2007-297770 A

  However, in the conventional door stop, in order to lock or release the hinged door 4 in the fully opened position, for example, when the operation button 8 is operated with a foot, the small operation button 8 must be stepped on from the upper side each time. In this case, not only is the operation troublesome, but there is a problem that it is a burden because it is difficult and troublesome for the elderly. In addition, each time the operation button 8 is operated by hand, the operation button 8 must be pushed down with a finger after bending, which is troublesome for not only the elderly but also the operator. There is a problem that it is a burden. Moreover, since it is indispensable to install the pedestal 3 and the plate 1 on the floor surface at a position where the door is fully opened, that is, a position close to the wall or the like, the wall or the like becomes an obstacle during operation. There has been a problem that the operation of stepping on the operation button 8 from above with a foot or bending and pressing the operation button 8 with a finger is more difficult.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a door stop that can be easily operated by simply pushing and pulling the hinged door in the fully open position without being stepped on with a foot or operated by hand.

  According to the first aspect of the present invention, for example, as shown in the embodiment shown below, the latch receiving device 20 made of a magnetic body having the engagement hole 16 at the tip end portion 20a is placed on the floor surface at the fully open position of the hinged door D. The base end portion is pivotally supported on the mounting seat 15 fixed to f so that it can swing freely, and when the hinged door D is fully opened, the latch receiving device 20 is provided with a magnet m provided in the locking device R fixed to the lower part of the hinged door D. The locking device R is a door stop that locks the hinged door D, and the locking device R is attached to the front end opposite to the rear end fixed to the hinged door D by the magnet m when fully opened. An insertion port 23 into which a distal end portion 20a of 20 is inserted is provided, a guide case 25 having a cam guide groove 50 recessed in the length direction on the bottom portion 18c, and the cam guide groove 50 in the guide case 25. Is arranged so as to be able to advance and retreat in the longitudinal direction, and a plate cam 3 at the bottom. And a movable piece 30 that is pivotally supported and engaged with the cam guide groove 50, and is connected to an upper portion of the movable piece 30 and has an engagement hole 16 of the latch receiving member 20 at the tip. While engaging the hook portion 40a, the lower hole portion 60a on the hook portion 40a side and the upper hole portion 60b on the base end side having the upper portion with respect to the lower hole portion 60a and the inclined hole portion 60c connecting between them. A cam lever 40 that is vertically movable up and down according to a support height supported by a support shaft 29 that is movable through the cam hole 60 and is movable through the cam hole 60; An urging spring 45 for urging the movable piece 30 toward the insertion port 23 in the front side, and the plate cam 35 is provided with a first engagement portion 35a at one end in the length direction. The second engagement portion 35b is provided at the other end of the side, while the cam guide groove 50 has a front A cam fitting groove 50a that holds the movable piece 30 in the lock standby position by fitting the plate cam 35 pressed against the front groove wall in the longitudinal direction by the urging spring 45, and the cam fitting groove 50a. A cam engagement groove portion 50b is provided on one side of the groove side wall in the rear in the length direction so that the first engagement portion 35a of the plate cam 35 engages and tilts the plate cam 35 with the engagement point as a fulcrum. On the other side of the groove side wall, when the plate cam 35 tilts about the cam engagement groove 50b, the second engagement portion 35b comes into contact with the plate cam 35 with the first engagement portion 35a. A cam abutting groove 50c that locks the movable piece 30 in the locked position is provided, and the second engagement portion 35b of the plate cam 35 is engaged with the guide case 25 at the rear end. The first guide protrusion 5 tilts the plate cam 35 with the engagement point as a fulcrum. 5 protrudes toward the cam guide groove 50, and the one side edge 35c of the plate cam 35 abuts with the first guide projection 55 so that the plate cam 35 is in the groove width direction of the cam guide groove 50. A second protrusion 56 that is held in a straight state parallel to the first protrusion 55 is provided so as to protrude toward the cam guide groove 50 next to the first protrusion 55.

  According to a second aspect of the present invention, in the door stop according to the first aspect, for example, as shown in the illustrated embodiment shown below, the plate cam 35 is cut at both ends in the length direction into V-shaped concave ends. The first engaging portion 35a is formed on the other end, and the second engaging portion 35b is formed on the other end.

  According to a third aspect of the present invention, in the door stop according to the first or second aspect, for example, as in the illustrated embodiment shown below, the first protrusion 55 has a second edge of the plate cam 35 at the tip edge. When the engaging portion 35b is engaged, the protruding length is gradually shortened so that the plate cam 35 is inclined to form a tapered portion 55.

  According to the first aspect of the present invention, when the hinged door is locked in the fully opened position, when the hinged door is pushed in, the movable piece is moved backward against the biasing spring by the latching receiver and pushed toward the rear end. The plate cam is tilted by engaging the second engaging portion with the first protrusion, and the first engaging portion is inclined in advance toward the cam engaging groove portion of the cam guide groove while passing through the cam hole. Depending on the support height of the moving spindle, the cam lever moves down from the upper position to the lower position where the hook is placed on the catch and then immediately pulls back the hinged door to move. The piece is pushed back by the urging force of the urging spring, the first engaging portion engages with the cam engaging groove and tilts, and the second engaging portion abuts on the cam abutting groove and the plate cams on both groove side walls. The movable piece is locked in the locked position, and the movable piece is held in the locked position. Middle hook portion of the cam lever riding on the hook receiving fixture to lock hinged door engages the engagement hole that. When releasing the lock, first, the hinged door is pushed in the fully open position. Then, the movable receiving piece is moved back against the urging spring by the latching receiver and pressed against the rear end portion, the second engaging portion is brought into contact with the first protrusion, and the plate cam is tilted. The cam side edge is brought into contact with both the first protrusion and the second protrusion so as to be in a straight state parallel to the groove width direction of the cam guide groove in advance, while the supporting height of the support shaft moving through the cam hole is supported. Accordingly, the cam lever is held at the height of the lower stage where the hook part is placed on the latching receiver, while the cam lever hooks on the latching receiver in the middle of moving in the opening direction according to the pushing of the hinged door. The part slips out of the engagement hole, and then the hinged door is immediately pulled back.The movable piece is pushed back by the urging force of the urging spring, and the other cam side edge of the plate cam contacts the cam engagement groove. After the plate cam is reversed in contact, the cam guide groove moves forward in the length direction, and the second engagement portion side The cam lever that rides on the latch receiving member moves through the cam hole while the hook portion is disengaged from the engagement hole while the hook portion is disengaged from the engagement hole. In accordance with the support height of the support shaft, it rises to the upper stage height position, moves in the closing direction as the hinged door is pulled back, separates the hook portion from the latch receiving member, and unlocks the hinged door. Therefore, the door stop of the present invention performs a simple operation of pushing and pulling the hinged door in the fully open position while standing without having to step on the foot or operate by hand as described above. Only the hinged door D can be locked in the fully open position or unlocked.

  According to the second aspect of the present invention, the plate cam has a first engagement portion formed at one end while a second engagement portion is formed at the other end by cutting out both ends in the length direction into a V-shaped concave shape. Therefore, when the hinged door is pushed in the fully open position, the second engagement portion can be accurately and accurately engaged with the tapered portion of the first protrusion, and can always be stably tilted with the engagement point as a fulcrum. Even when the hinged door is pulled back, the first engagement portion engages with the cam engagement groove accurately and accurately on one side of the groove side wall of the cam guide groove, and in this case as well, the engagement point is always stably used as a fulcrum. The hinged door can be tilted, whereby the hinged door can be reliably and smoothly locked in the fully opened position or unlocked.

  According to the invention of claim 3, in the locking device, when the second engaging portion of the plate cam is engaged with the tip edge, the first protrusion gradually shortens the protruding length in the direction in which the plate cam is inclined. Since the taper portion is formed, when the hinged door is pushed in the fully open position, the plate cam is always stably supported at the engagement point when the second engagement portion of the plate cam engages the taper portion of the first protrusion. As a result, the hinged door can be reliably and smoothly locked or unlocked in the fully open position.

  Hereinafter, the best mode of the present invention will be described with reference to the drawings.

  FIG. 1 is a sectional view showing an internal structure of a door stop as an example of the present invention, FIG. 2 is a perspective view showing a door structure to which the door stop of the present invention is applied in a closed state, and FIG. FIG. 4 is a perspective view showing a door structure of the present invention in an installed state. FIG. 2 and 3, the door structure includes a floor F, a rectangular door frame B composed of left and right vertical frames 10 and 11 and an upper frame 12, and a pivot hinge type vertical hinge H1 on the vertical frame 11. -It is comprised with the hinged door D assembled | attached rotatably by H2. On the hinge side of the hinged door D, a wall W is erected on the front side in the drawing in a direction perpendicular to the opening S.

  In the illustrated door structure, the door stop according to the present invention includes a door stop main body A installed on the floor F side and a lock device R installed on the hinged door D side.

  The door-holding main body A is composed of a mounting seat 15 made of a circular metal thin plate and a latch receiving tool 20 made of a magnetic material such as iron or steel. The mounting seat 15 is formed with a housing recess 15a on the surface in accordance with the shape of the latching receiver 20. The latch receiving member 20 is a rectangular magnetic plate having an engagement hole 16 in the distal end portion 20a, and a base end portion is pivotally supported on the edge of the storage recess 15a and is swingably attached to the mounting seat 15. Yes. The door-holding body A is on the rotation trajectory of the lower corner portion 14 opposite to the lower hinge H2 side of the hinged door D, and the mounting seat 15 is screwed onto the floor surface f in the fully open position. When the hinged door D is not in the fully open position, that is, when the door is not in use, the latch receiving device 20 fits into the housing recess 15a and is flush with the mounting seat 15 so as not to obstruct walking or cleaning. The planar structure hardly protrudes from the floor surface f.

  On the other hand, as shown in FIG. 5, the locking device R includes a guide case 25 fixed to the hinged door D, a pair of rectangular plate-like magnets m, a movable piece 30, and a movable piece 30. The plate cam 35 and the cam lever 40 connected to the piece 30 and a biasing spring 45 of a compression coil spring that biases the movable piece 30 are configured.

  The guide case 25 includes a case body 18 and a back cover 19. The case main body 18 is made of metal, and the rear end portion of the side fixed to the hinged door D is opened in a large convex shape, and a component mounting port 21 is provided there, and symmetrical mounting ears are provided on both sides of the component mounting port 21. 18a is projected.

  The case main body 18 has a nose-shaped projecting front end on the front side directly opposite the component insertion port 21 on the rear end side, and matches the shape on the front end side of the cam lever 40 on the inside as shown in FIG. An inner wall surface having a rectangular cross section is formed, and a lever guide portion 18b for guiding the cam lever 40 to move up and down is provided. A lever guide surface 13 is formed on the lower side of the lever guide portion 18b in a direction parallel to the component insertion port 21. A pair of stopper screws 17 are screwed into the lever guide surface 13 with the heads facing the component insertion ports 21. A hook inlet / outlet 22 through which the hook portion 40a at the tip of the cam lever 40 enters / exits is provided at the nose tip at the lower end of the lever guide portion 18b in the figure, and the hook receiving member 20 is provided on the bottom 18c side adjacent to the hook inlet / outlet 22. The insertion port 23 into which the tip portion 20a is inserted is opened. The lever guide portion 18b is provided with magnet mounting shelves 18d on both sides of the nose tip side at the lower end in the figure with the hook doorway 22 interposed therebetween, and the magnet m is fixed to the magnet mounting shelf 18d. As shown in FIG. 5, the case main body 18 has a guide rail that guides the movable piece 30 to the inner side walls on both sides in the width direction so that the movable piece 30 can be moved back and forth in the length direction between the component insertion port 21 and the insertion port 23. The recess 18e is formed in accordance with the outer shape of the movable piece 30.

  Further, on the bottom 18 c of the case body 18, a long cam guide groove 50 is provided in the front-rear direction between the component insertion port 21 and the insertion port 23. As shown in FIG. 1, the cam guide groove 50 is provided with a cam fitting groove 50a having a groove width corresponding to the plate width of the plate cam 35 on the insertion port 23 side, and on the far side in the length direction of the cam fitting groove 50a. On one side of the opposite groove side walls, a cam engagement groove portion 50b having a step shape with a groove width increased by one step is provided, and on the other side, the first engagement portion 35a of the plate cam 35 is a cam engagement groove portion. A cam contact groove portion 50c is provided that contacts the second engagement portion 35b when engaged with 50b and restricts the rotation of the plate cam 35.

  The back cover 19 is made of a resin flat plate, and as shown in FIGS. 1 and 5, the outer shape is integrally formed into a convex plate shape in accordance with the opening shape of the component insertion port 21, and the inner plate surface 19a The first protrusion 55 and the second protrusion 56 are provided so as to protrude from the inner plate surface 19a at a right angle with an interval at the lower end. The first protrusion 55 has a substantially rectangular plate-like shape, and the tip edge is in a direction in which the plate cam 35 is inclined when the second engagement portion 35b of the plate cam 35 is engaged, that is, the second protrusion 56 side. The taper portion 55a is formed by gradually shortening the protruding length toward the opposite lid edge. The second protrusion 56 is formed in a rectangular plate shape having the same protrusion length as the first protrusion 55.

  Further, the back cover 19 has a pair of guide projections 31 projecting on both sides of the inner plate surface 19a with a gap through which the tail 40b of the cam lever 40 moves up and down on the upper end side. A spring-loaded convex portion 32 is provided between the convex portion 31 and the first and second projections 55 and 56.

  The movable piece 30 is integrally formed of resin, and a bearing hole 33 is provided at the lower end of the main body 30a, while a pair of support convex portions 30b and 30b having a shaft insertion hole 34 are provided at the upper end, and the front end surface is inserted. An abutting stepped portion 30c against which the tip 20a of the latch receiving device 20 to be inserted from the opening 23 abuts is recessed, and a spring receiving hole 38 is formed on the opposite rear end surface.

  The plate cam 35 is made of resin and has a central shaft portion 37 standing on a cam main body portion 36. The cam body portion 36 is formed by cutting out both ends in the length direction into a V-shaped concave shape to form a first engagement portion 35a at one end and a second engagement portion 35b at the other end. Therefore, the plate cam 35 is pivotally supported on the lower end of the movable piece 30 by inserting the central shaft portion 37 into the bearing hole 33 of the movable piece 30 and rotating freely.

  The cam lever 40 is made of a metal plate, and is provided with a claw-like hook portion 40a that engages with the engagement hole 16 of the latch receiving device 20 at a tip extending in a nose shape, and a thin cam hole 60 is formed in the length direction. ing. The cam hole 60 includes a horizontally long lower step hole 60a on the tip hook portion 40a side, a horizontally long upper step hole 60b on the base end side, and an inclined hole portion 60c that connects the upper and lower holes 60a and 60b with an inclination. . The cam lever 40 is inserted into the cam hole 60 and supported by the movable piece 30 through the shaft insertion hole 34 of the support convex portion 30b, and is supported by the movable piece 30. The lower hole portion 60a corresponds to the insertion position of the support shaft 29 with respect to the cam hole 60. And the upper hole portion 60b are connected to the movable piece 30 such that the support height position is variable.

  Therefore, the locking device P inserts the movable piece 30 provided with the plate cam 35 and the cam lever 40 into the guide rail concave portion 18e with both side portions thereof being inserted into the guide rail recess 18e with the hook portion 40a of the cam lever 40 facing forward. The plate cam 35 is engaged with the cam guide groove 50 by being engaged and incorporated in the guide case 25. Then, one end of the urging spring 45 is inserted into the spring receiving hole 38 and attached, while the other end is latched to the spring hooking convex portion 32 of the back cover 19, and then the back cover 19 is fitted into the component insertion port 21. After attaching, it is assembled by screwing to the rear end. Then, as shown in FIG. 1, the movable piece 30 is urged by the urging spring 45 toward the front insertion port 23 side, and the movable piece 30 is movable in a state where the front end surface is applied to the head of the stopper screw 17 and stopped. The piece 30 is held in the guide case 25. The plate cam 35 is held at the lock standby position where the end on the first engagement portion 35a side abuts against the front groove wall on the front side in the length direction of the cam guide groove 50 and is fitted into the cam fitting groove 50a. On the other hand, the cam lever 40 is sandwiched between the lever guide surface 13 of the lever guide portion 18b on the near side and the inner plate surface 19a of the back cover 19 on the back side, and is held so as to be vertically movable. In the assembled state, the cam lever 40 is held in the uppermost lock standby position because the support shaft 29 is inserted through the lower hole portion 60a of the cam hole 60 in the guide case 25. Then, as shown in FIG. 4, the locking device R is fixed to the hinged door D by screwing attachment ears 18 a to the door plate surface 65 of the door-stop main body A at the lower corner portion 14 of the hinged door D.

  Now, in the illustrated embodiment, when the closed door D in the closed state is opened as shown in FIG. 2, fully opened as shown in FIG. 3, and locked to the fully opened position by the door of the present invention, FIG. As shown in Fig. 4, the hinged door D is rotated in the opening direction X so as to approach the fully opened position where the door-contact main body A is installed. Then, as shown in FIG. 6B, when the magnet m of the locking device R reaches the door stop main body A, the latch m is adsorbed by the magnet m and held in an inclined state. .

  Next, the hinged door D is pushed further closer to the wall W in the opening direction X at the fully opened position. Then, as shown in FIG. 6 (C), the leading end 20a of the latching receiver 20 is inserted into the guide case 25 through the insertion port 23, and abuts against the abutting step 30c to guide the movable piece 30. With the guide of the rail recess 18e, it is moved backward against the urging spring 45 to the back side, and once pressed against the inner plate surface 19a of the back cover 19. At this time, as shown in FIG. 1B, the plate cam 35 is cam-guided together with the movable piece 30 from the lock standby position where the first engaging portion 35 a is fitted into the cam fitting groove 50 a of the cam guide groove 50. As shown in FIG. 7A2, the second engaging portion 35 b engages with the tapered portion 55 a of the first protrusion 55. Then, the plate cam 35 tilts counterclockwise in the figure with the engagement point as a fulcrum, and the first engagement portion 35a is inclined toward the cam engagement groove portion 50b. At this time, as shown in FIG. 1 (A), the cam lever 40 moves from the lower hole portion 60a of the cam hole 60 to the support shaft 29 as shown in FIG. 7 (A1) as the movable piece 30 moves backward. Then, it passes through the inclined hole portion 60c and moves to the upper step hole portion 60b. In response to the movement of the support shaft 29, the support height position is lowered from the upper step height position to the lower step height position, and the hook portion 40a. Is on the latching receiving member 20 and is in a state of abutting the tip.

  Then, the push-in is released immediately, and the hinged door D is pulled back in the closing direction Y as shown in FIG. Then, the movable piece 30 is pushed back by the biasing force of the biasing spring 45 along the guide rail recess 18e to the front insertion port 23 side. At the same time, the plate cam 35 is moved forward in the length direction of the cam guide groove 50 while the first engagement portion 35a shown in FIG. 7A2 is inclined with respect to the cam engagement groove portion 50b. As shown in FIG. 7 (B2), the first engaging portion 35a is engaged with the cam engaging groove portion 50b on one side of the groove side wall, and tilts counterclockwise in the drawing with the engaging point as a fulcrum. The second engagement portion 35b is brought into contact with the cam contact groove portion 50c on the other side of the groove side wall and is hooked between both side walls to be in a locked state, so that the movable piece 30 is in the locked position as shown in FIG. 7 (B1). Hold on. As the movable piece 30 is pushed back, the cam lever 40 stops when the support shaft 29 moves in the same upper hole portion 60b toward the front inclined hole portion 60c, and the lower portion where the hook portion 20a rides on the hooking receiver 20 On the other hand, as the hinged door D is pulled back, the hook part 40a riding on the latching receiver 20 is engaged with the engaging hole 16 in the middle of moving in the closing direction Y, and the hinged door D is locked. To do.

  On the contrary, in order to close the hinged door D locked in the fully opened position, when the lock is released at the door stop according to the present invention, first, the hinged door D locked in the fully opened position is moved closer to the wall W in the opening direction X. Push into. Then, as shown in FIG. 8 (A), the front end 20a of the latching receiver 20 abuts against the abutting step portion 30c, and the movable piece 30 is moved backward against the biasing spring 45 against the back side. Then, the back cover 19 is pressed against the inner plate surface 19a. At this time, the plate cam 35 moves to the rear side in the longitudinal direction of the cam guide groove 50 together with the movable piece 30 in a state where the first engagement portion 35a is inclined by being engaged with the cam engagement groove portion 50b. Thereafter, the second engaging portion 35b abuts against the tapered portion 55a of the first protrusion 55, and tilts counterclockwise in the drawing with the abutting point as a fulcrum, as shown in FIG. 9 (A2). The side edge 35 c comes into contact with both the first guide protrusion 55 and the second protrusion 56 and once becomes straight in parallel with the groove width direction of the cam guide groove 50. On the other hand, as the movable piece 30 moves backward, the cam lever 40 stops as the support shaft 29 moves to the rear rear side in the same upper hole portion 60b as shown in FIG. 9A1, and the hook portion 40a is moved. While being held at the lower height position on the latch receiver 20, the hook portion 40a riding on the latch receiver 20 is moved in the opening direction X as the hinged door D is pushed. It slips out of the engagement hole 16 and comes off.

  Immediately thereafter, the hinged door D is pulled back in the closing direction Y as shown in FIG. Then, the movable piece 30 is pushed back to the front insertion port 23 side by the urging force of the urging spring 45. At the same time, the plate cam 35 moves forward in the length direction of the cam guide groove 50 while being in a straight state as shown in FIG. 9 (A2), and as shown in FIG. 9 (B2), the other cam side The edge 35d hits a corner edge of the cam engaging groove 50b, and the contact point is reversed in the counterclockwise direction in the drawing, and then the cam guide groove 50 moves forward in the length direction. The end portion on the side of the mating portion 35b is returned and held in the lock standby position fitted in the cam fitting groove portion 50a (see FIG. 1B). On the other hand, as shown in FIG. 9 (B1), the cam lever 40 is moved after the movable piece 30 is pushed back, after the support shaft 29 moves to the front inclined hole portion 60c side in the upper step hole portion 60b. By moving to the lower hole portion 60a as shown in FIG. 1A through 60c, the support height position by the support shaft 29 is raised to the upper position, and the closing direction is as the hinged door D is pulled back. It moves to Y and the hook part 40a is separated from the latching receiving tool 20, and the lock | rock of a hinged door is cancelled | released.

  Therefore, the illustrated door contact according to the present invention is a simple operation in which the hinged door D is pushed and pulled back in the fully opened position while standing without being stepped on with a foot or operated with hands bent as described above. Thus, the hinged door D can be locked in the fully open position or unlocked.

(A) is a longitudinal cross-sectional view which shows the internal structure of the door stop which is an example of this invention, (B) is a cross-sectional view. It is a perspective view which shows the door structure to which the door stop of this invention is applied in a door closed state. It is a perspective view which shows the door structure to which the door stop of this invention is applied in a full open state. It is a perspective view which shows the door stop of this invention in an installation state. It is a disassembled perspective view of a locking device. It is a longitudinal cross-sectional view which shows the operation | movement which opens a hinged door in the door stop of this invention, and locks it in a fully open position. (A1) * (B1) is a longitudinal cross-sectional view which shows the operation state of a locking device in steps, when locking a hinged door in a fully open position, (A2) * (B2) is a cross-sectional view. It is a longitudinal cross-sectional view which shows the operation | movement which cancels | releases the lock of a hinged door by the door stop of this invention in steps. (A1) and (B1) are longitudinal sectional views showing stepwise the operating state of the locking device when unlocking the hinged door, and (A2) and (B2) are transverse sectional views. It is a perspective view which shows the conventional door stop. It is a longitudinal cross-sectional view which shows the conventional locking device per door.

Explanation of symbols

A Door-to-door body D Sliding door F Floor R Locking device S Opening f Floor m Magnet 15 Mounting seat 16 Engagement hole 20 Latch 23 Insert 25 Guide case 29 Support shaft 30 Movable piece 35 Plate cam 35a First Engagement part 35b Second engagement part 35c One cam side edge 35d The other cam side edge 40 Cam lever 40a Hook part 45 Energizing spring 50 Cam guide groove 50a Cam fitting groove part 50b Cam engagement groove part 50c Cam contact groove part 60 Cam hole 60a Lower hole 60b Upper hole 60c Inclined hole

Claims (3)

A latch receiving device made of a magnetic material having an engagement hole at the distal end portion is pivotally attached to a mounting seat fixed to the floor surface at the fully open position of the hinged door so that the base end portion pivots, and the hinged door is fully opened. When the door is to lock the hinged door by adsorbing the latch receiving device with a magnet provided in a locking device fixed to the lower part of the hinged door,
The locking device is
Provided in the front end opposite to the rear end fixed to the hinged door is an insertion port into which the front end of the hook receiving member adsorbed by the magnet when fully opened is inserted, and a cam guide groove in the length direction on the bottom A guide case that is recessed,
A movable piece that is disposed in the guide case so as to be able to advance and retreat in the longitudinal direction of the cam guide groove, and pivotally supports a plate cam at the lower portion to engage with the cam guide groove;
The hook is connected to the upper part of the movable piece, and a hook part that engages with the engagement hole of the latch receiving device projects at the tip, while the lower part hole part and the lower part hole part on the hook part side According to the support height supported by a movable support shaft by drilling in the length direction a cam hole consisting of an upper step hole portion on the base end side and an inclined hole portion connecting between them, A cam lever that is vertically movable up and down;
A biasing spring that biases the movable piece toward the insertion port on the near side,
The plate cam is provided with a first engagement portion at one end in the length direction and a second engagement portion at the other end on the opposite side,
In the cam guide groove, a cam fitting groove portion for fitting the plate cam pressed against the front groove wall in the longitudinal direction by the biasing spring and holding the movable piece in a lock standby position, and the cam fitting A cam engaging groove is provided on one side of the groove side wall at the rear side in the length direction of the joint groove to engage the first engaging portion of the plate cam and tilt the plate cam with the engagement point as a fulcrum. On the other side of the side wall, when the plate cam tilts with the cam engagement groove portion as a fulcrum, the second engagement portion comes into contact with the plate cam so that the plate cam is locked with the first engagement portion. A cam contact groove that holds the movable piece in the locked position is provided.
In the guide case, a first guide protrusion that tilts the plate cam with the second engagement portion of the plate cam engaged with the rear end portion and with the engagement point as a fulcrum is directed toward the cam guide groove. And a second protrusion for holding the plate cam in a straight state parallel to the groove width direction of the cam guide groove, with one side edge of the plate cam abutting with the first guide protrusion. A door stop, characterized in that it protrudes toward the cam guide groove beside one protrusion.   The plate cam is formed by notching both ends in the length direction into a V-shaped concave shape to form the first engagement portion at one end, and forming the second engagement portion at the other end. The door stop according to claim 1.   When the second engaging portion of the plate cam is engaged with the front end edge of the first protrusion, the first protrusion is formed so that the protruding length is gradually shortened to form a tapered portion. The door stop according to claim 1 or 2.

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