Double door stopper

Abstract

To provide a double door stopper capable of automatically correcting a wedge-shaped gap to make full contact and maintaining an open door state even when a wedge-shaped gap is formed due to partial contact between the plane of a magnet and a single-wing door in a fully open state when switching to a function for emergency entry and exit. [Solution] A combination of a door stop 10 having a buffer body 13 erected on the floor surface and a door stopper 20 having a magnet M that is slidably and rotatably mounted relative to the door stop 10, the magnet M being resiliently supported so that it can swing horizontally via a horizontal shaft 22 and an elastic body 23 for connecting to the rising surface portion 21b, and the magnet M is positioned so that it comes to the front of the door stop during emergency entry and exit; if the positioning of the magnet M relative to the door D is inaccurate and the magnet M comes into contact with the fully open door D, resulting in a one-sided contact and creating a wedge-shaped gap between the door D and the magnet M, the pressing force of the door D causes the magnet M to tilt to eliminate the wedge-shaped gap and come into full contact with the door D.

Description

[Technical Field]

[0001] The present invention relates to, for example, a door stopper, and more particularly to a double door stopper. [Background technology]

[0002] The double door stopper shown in FIG. 6 of Patent Document 1 is configured by combining a door stop 200 having a buffer body erected on the floor surface with a door stopper 100 having a magnet that is slidably and rotatably mounted relative to the door stopper 200. This combined structure includes the door stopper 200 and the door stopper 100. This double door stopper can be switched between a normal entry / exit function and an emergency entry / exit function by changing the position of the door stopper 100, which is rotatably clamped to the underside of the support pillar of the door stopper 200, by approximately 90 degrees relative to the door stopper 200. The normal entry / exit function is a function in which, when a single-wing door that is closed by a door closer is fully opened, the magnet M of the door stopper 100 is retracted from between the single-wing door and the door stopper 200, so that the fully-opened door is not attracted to the magnet M and stops at the door stopper 200, allowing the door to subsequently close automatically. The function for emergency entry and exit is that when entering or exiting the room for cleaning, loading and unloading luggage, maintenance, etc., the magnet M of the door stopper 100 is fixed in position between the single-leaf door, which is in a fully open state, and the door stop 200, and the magnet M is attracted to the magnetic surface of the single-leaf door, maintaining the door in an open state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3207462 Summary of the Invention [Problem to be solved by the invention]

[0004] The door stopper 100 disclosed in Patent Document 1 has the problem that when switched to its emergency entry / exit function, the plane of the magnet M and the magnetic surface of the fully open single-swing door do not become parallel to each other, approaching each other and achieving close contact and magnetic attraction. Instead, if there is a difference in angle of, say, just 5 degrees in plan view, a partial contact occurs, creating a wedge-shaped gap. In this case, the magnet M cannot be properly attracted to the magnetic surface of the single-swing door, and the door stopper fails to function as a means of maintaining the open state. When the door stopper fails to function as a means of maintaining the open state, the user must manually grasp the door stopper 200, loosen the support post 30, bring the magnet M into close contact with the magnetic surface of the single-swing door, and then tighten the support post 30, which requires additional work. Furthermore, the portion of the door surface that makes a partial contact may be damaged.

[0005] The present invention has been made to overcome the problems of the conventional technology described above, and aims to provide a double door stopper that can perform the function of maintaining the open door state by automatically correcting the magnetic plane so that it does not make partial contact with the magnetic surface of the single-leaf door when it is fully open, even if the orientation of the magnetic plane is inaccurately positioned when switching to the emergency entry / exit function, causing a wedge-shaped gap to form between the magnetic plane and the magnetic surface of the single-leaf door when it is fully open. [Means for solving the problem]

[0006] In order to solve the above problems, the inventors, after thorough consideration, came up with the idea of ​​a dual door stopper, which is a combination structure of a door stop and a door stopper, and which can be switched between a function of stopping a single-swing door that automatically closes with a door closer before it hits the wall when it is fully opened, allowing it to continue automatically closing, and a function of locking the door in a fully open position.

[0007] More specifically, the inventors have conducted extensive research into a mechanism for assembling the magnet to the raised surface of the support body so that when the magnet is attracted to the door surface, the magnet can swing left or right to match the door surface, eliminating the wedge-shaped gap between the magnet plane and the door surface, and a mechanism for avoiding clamping and fixing the mounting surface of the support body so that when the magnet is attracted to the door surface, the mounting surface can slide toward the door and rotate slightly, eliminating the wedge-shaped gap between the magnet plane and the door surface.As a result of this research, the present invention was completed.

[0008] Therefore, in order to solve the above problems, the double door stopper according to a first aspect of the present application comprises a door stopper having a buffer body on the top of a support pillar and a screw hole in the support pillar that is screwed onto an anchor bolt rising from the floor, and a door stopper including a support body having a mounting surface portion and a rising surface portion that is slidably and rotatably engaged with the anchor bolt and a magnet attached to the outward surface of the rising surface portion, and during normal entry and exit of a room, the magnet is positioned so as not to come into contact with a single-wing door that is automatically closed by a door closer in a fully open state, thereby performing the normal function of buffering the door against the buffer body of the door stopper when the door is fully open and then allowing the door to be closed by the door closer, and during emergency entry and exit such as room cleaning or construction, the magnet is positioned so as to come into contact with the door in a fully open state. This provides an emergency function of magnetically attracting the door when it is fully open and maintaining the door in the fully open state, and the magnet is a plate-like body covered with cushioning material, and is held approximately parallel to the outward surface of the raised surface and spaced a required distance apart via a horizontal axis and an elastic body for connecting to the raised surface, and is able to swing at least horizontally and remain stationary at the center of amplitude, so that the magnet is positioned so that it is in front of the door stop during emergency entry or exit, and when the magnet comes into partial contact with the door when it is fully open (for example, due to inaccurate positioning of the magnet relative to the door) and a wedge-shaped gap is created between the magnet and the door, the magnet tilts due to the pressing force of the door to eliminate the wedge-shaped gap and has a swing adjustment function that brings the magnet into full contact with the door.

[0009] In order to achieve the above object, a double door stopper according to a second aspect of the present application comprises a door stopper having a buffer body on the top of a support pillar and a screw hole in the support pillar that is screwed onto an anchor bolt rising from the floor surface, and a support body having a mounting surface portion and a rising surface portion that is slidably and rotatably engaged with the anchor bolt, and a magnet attached to the outward surface of the rising surface portion, and during normal entry and exit of a room, the magnet is positioned so as not to come into contact with a single-wing door that is automatically closed by a door closer in a fully open state, thereby having a normal function of buffering the door against the buffer body of the door stopper when the door is fully open and then allowing the door to be closed by the door closer, and during emergency entry and exit such as during room cleaning or construction, the magnet is positioned so as to come into contact with the door in a fully open state, thereby having a normal function of stopping the door in a fully open state and has an emergency function of magnetically attracting the door, which is in a fully open state, and holding the door in the door fully open state, and the magnet has a configuration in which a long hole is provided in the mounting surface portion of the support body and the anchor bolt passes through the long hole, so that when the mounting surface portion is not fastened and fixed by the door stop during emergency entry or exit and the magnet is positioned so as to be in front of the door stop when the door is in a fully open state, if the magnet makes a one-sided contact when it abuts the door (for example, due to inaccurate positioning of the magnet relative to the door), creating a wedge-shaped gap between the magnet and the door, the magnetic attractive force causes the mounting surface portion to slide toward the door (or slide toward the door and rotate slightly) to eliminate the wedge-shaped gap and have a slide adjustment function in which the mounting surface portion slides toward the door (or slides toward the door and rotates slightly) to close the wedge-shaped gap and come into full contact with the door.

[0010] In order to achieve the above object, a double door stopper according to a third aspect of the present application comprises a door stopper having a buffer body at the top of a pillar and a screw hole in the pillar that is screwed onto an anchor bolt rising from the floor surface, and a door stopper including a support body having a mounting surface portion and a rising surface portion that is slidably and rotatably engaged with the anchor bolt and a magnet attached to the outward surface of the rising surface portion, and when entering or exiting a room during normal use, the magnet is positioned so as not to come into contact with a single-wing door that is automatically closed by a door closer that is in a fully open state, so that when the door is fully opened, the front door stops. The door has a normal function of stopping the door on a buffer body of the door stopper and then enabling the door to be closed by the door closer, and has an emergency function of magnetically attracting the door in a fully open state and maintaining the door in a fully open state by positioning the magnet so that it abuts against the door in an emergency such as room cleaning or construction, and the magnet is a plate-like body covered with a cushioning material, and is swingable at least horizontally in a state parallel to and spaced apart from the outward surface of the rising surface portion via a horizontal shaft and an elastic body for connecting to the rising surface portion, and has an amplitude center The magnet is held stationary so that the magnet is positioned in front of the door stop during emergency entry and exit, and when the magnet abuts against the door in a fully open state (for example, due to inaccurate positioning of the magnet relative to the door) and a wedge-shaped gap is created between the magnet and the door, the magnet has a swing adjustment function that tilts to eliminate the wedge-shaped gap due to the pressing force of the door and comes into full contact with the door, and the magnet has a configuration in which an elongated hole is provided in the mounting surface of the support, and the anchor bolt passes through the elongated hole. When the mounting surface is not fastened and fixed by the door stop during emergency entry and exit and the magnet is positioned in front of the door stop when it is fully open, if the magnet makes partial contact with the door when it comes into contact with it (for example, due to inaccurate positioning of the magnet relative to the door), creating a wedge-shaped gap between the magnet and the door, the mounting surface slides toward the door and rotates slightly due to magnetic attraction, eliminating the wedge-shaped gap and providing a slide adjustment function that brings the mounting surface into full contact with the door.

[0011] As a fourth aspect of the present application, in any one of the first or third aspects described above, a switching mechanism that can alternately switch between the swing adjust function and the slide adjust function may be further provided. The switching mechanism can be realized, for example, by a lock mechanism that locks one of the swing adjust function and the slide adjust function when the other function is being performed, and a switching mechanism that makes it possible to selectively activate one of the two functions.

[0012] As a fifth aspect of the present application, in any one of the first or third aspects, the base end of the horizontal shaft may be fixedly connected to the raised surface portion so that the horizontal shaft extends horizontally, and the magnet may be connected to the tip of the horizontal shaft so that it can swivel within a horizontal plane with the axial center at the tip of the horizontal shaft coinciding with the surface center of the magnet, and further the elastic bodies provided on both horizontal sides of the tip of the horizontal shaft may bias the magnet so that the magnet sways within the horizontal plane and remains stationary at the center of amplitude.

[0013] As a sixth aspect of the present application, in any one of the first or third aspects described above, the tip of the horizontal shaft and the magnet may be fixedly connected so that the axial center at the tip of the horizontal shaft coincides with the face center of the magnet, the base end of the horizontal shaft is engaged with the rising surface portion so that the axial center at the base end of the horizontal shaft coincides with the width center of the rising surface portion, and the horizontal shaft may be sandwiched and guided by a pair of upper and lower horizontal guides provided on the rising surface portion, and may be capable of swinging within a horizontal plane, and the horizontal shaft may be biased by the elastic body from both horizontal sides to come to rest at the center of amplitude within the horizontal plane.

[0014] As a seventh aspect of the present application, in any one of the first or third aspects described above, the tip of the horizontal shaft and the magnet may be fixedly connected so that the tip of the horizontal shaft and the face center of the magnet coincide, the base end of the horizontal shaft may be passed through an axial hole drilled so as to coincide with the width center of the raised surface portion and a nut may be fastened to prevent the hole from coming loose, and a spiral spring may be provided so that the horizontal shaft passes through the spring axis center, with the small diameter end of the spiral spring pushing against the raised surface portion and the large diameter end of the spiral spring pushing against the magnet, so that the tip side of the horizontal shaft can swing up and down and left and right depending on the load and remains stationary at the center of amplitude when there is no load.

[0015] As an eighth aspect of the present application, in any one of the first or third aspects described above, the horizontal shaft may have two horizontal shafts that are parallel to each other in a plan view so as to connect the rising surface portion and the magnet, the base end of each horizontal shaft may be passed through an axial hole drilled in the rising surface portion and a nut may be fastened to prevent the hole from coming loose, and the horizontal shaft may be provided so that the horizontal shaft passes through the center of the spring axis, and both ends of a coil spring may be tensioned against the rising surface portion and the magnet, so that the tip side of the horizontal shaft can swing left and right depending on the load and remains stationary at the center of amplitude when there is no load.

[0016] As a ninth aspect of the present application, in the second or third aspect described above, a spacer ring slightly thicker than the mounting surface portion of the door stopper may be provided below the door stopper, the anchor bolt passes through the spacer ring, and the spacer ring is loosely fitted into an elongated hole in the mounting surface portion, so that when the spacer ring is clamped between the floor surface and the magnet comes into contact with the door and makes a one-sided contact, creating a wedge-shaped gap between the magnet and the door, the magnetic attraction force causes the mounting surface portion to slide toward the door and rotate slightly, eliminating the wedge-shaped gap and allowing the entire surface to fit tightly against the door.

[0017] As a tenth aspect of the present application, in the first aspect, the magnet may be surrounded by a yoke, and the outside may be further coated with the resin or the soft rubber.

[0018] As an eleventh aspect of the present application, in the first aspect, the magnet may be any one of a neodymium magnet, a ferrite magnet, a samarium-cobalt magnet, and an alnico magnet.

[0019] As a twelfth aspect of the present invention, in the first aspect, the mounting surface portion of the door stopper may be provided with an elongated hole, and one side of the elongated hole may be cut.

[0020] As a thirteenth aspect of the present invention, in the first aspect, the door may be made of wood, and a magnetic plate may be added to a surface of the door that comes into contact with the magnet. [Effects of the Invention]

[0021] According to the present invention, when the function is switched to emergency entry / exit, even if the orientation of the magnet's flat surface is inaccurately positioned, causing the magnet's flat surface to make partial contact with the magnetic surface of the single-leaf door when it is fully open, creating a wedge-shaped gap, a double door stopper can be provided that can automatically correct the magnet's flat surface so that it makes full contact with the magnetic surface of the single-leaf door when it is fully open, rather than making partial contact, thereby maintaining the door in an open state. [Brief explanation of the drawings]

[0022] [Figure 1]1(A) is a plan view showing the installation position of the double door stopper, FIG. 1(B) is a simplified plan view showing a state in which a door that fully opens with a door stop is stopped in a normal manner when entering or exiting a room, FIG. 1(C) is a simplified plan view of the double door stopper in a state in which the door stopper is correctly aligned with the opposing surface of the door when entering or exiting an emergency room, and FIG. 1(D) and FIG. 1(E) are a simplified plan view of the double door stopper in a state in which the door stopper is incorrectly aligned with the opposing surface of the door when entering or exiting an emergency room. Figures 1(F) and 1(H) are simplified plan views of a double door stopper showing the state in which the magnet changes direction and comes into full contact with the door when it makes partial contact with the magnet, causing it to inaccurately change direction during emergency entry or exit, resulting in the door opening fully; Figures 1(G) and 1(I) are simplified plan views of a double door stopper showing the state in which the support slides and changes direction and comes into full contact with the door when it makes partial contact with the magnet, causing it to inaccurately change direction during emergency entry or exit, resulting in the door opening fully. [Figure 2A] 1 is a vertical sectional front view of a dual door stopper according to a first embodiment of the present invention; [Figure 2B] 2B is a cross-sectional view of the double door stopper according to the first embodiment of the present invention taken along line IIb-IIb in FIG. 2A. FIG. [Figure 3A] FIG. 6 is a vertical sectional front view of a dual door stopper according to a second embodiment of the present invention. [Figure 3B] 3B is a cross-sectional view of the dual door stopper according to the second embodiment of the present invention taken along line IIIb-IIIb in FIG. 3A. [Figure 4] FIG. 10 is a vertical sectional front view of a dual door stopper according to a third embodiment of the present invention. [Figure 5A] FIG. 10 is a vertical sectional front view of a dual door stopper according to a fourth embodiment of the present invention. [Figure 5B] 5B is a cross-sectional view of the dual door stopper according to the fourth embodiment of the present invention, taken along line Vb-Vb in FIG. 5A. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A dual door stopper according to an embodiment of the present invention will now be described with reference to the drawings.

[0024] [Function of the double door stopper according to the embodiment of the present invention] As shown in Figure 1(B), the double door stopper 1 is configured to combine a door stop 10 having a buffer body erected on the floor surface, as in the conventional case, with a door stopper 20 having a magnet that is slidable and rotatable relative to the door stop 10. As shown in Figure 1(A), the double door stopper 1 is installed on the floor surface so that when a single-swing door D that closes automatically by a door closer (not shown) is in a fully open state (or a substantially fully open state; the same applies below), the double door stopper 1 is located between the room wall-facing portion (of the door D) and the room wall W at or near the end of the opening / closing side of the door D (i.e., the side facing the center of rotation of the rotational movement related to the opening and closing operation of the door D).

[0025] The double door stopper 1 is positioned so that the door stop 10 comes into contact with the door D, which is normally fully open when entering or exiting a room, and the door stopper 20 is positioned so that it does not come into contact with the door D. When the door D is fully open (or substantially fully open; the same applies below), it comes into contact with the door stop 10 and is then automatically closed by the door closer.

[0026] Also, as shown in Figure 1(C), in the case of emergency entry or exit, the double door stopper 1 rotates the door stopper 20 by approximately 90 degrees relative to the door stop 10, causing the magnet M of the door stopper 20 to come into surface contact (close contact between the surfaces) with the door D, which is in a fully open state, and the magnetic door D is attracted by the magnet M, holding the door D in a fully open state against the automatic closing force of the door closer.

[0027] However, during emergency entry and exit, problems can arise when the magnet M of the door stopper 20 is in close contact with the door D in a fully open state. This problem occurs when the orientation of the magnet M's plane is inaccurately positioned, as shown in Figures 1(D) and 1(E). If there is a slight difference, e.g., 5 degrees, from the rotation angle required for accurate positioning (i.e., the position where the plane of the magnet M makes complete surface contact with one side of the single-swing door D in a fully open state), the plane of the magnet M and the magnetic surface of the single-swing door D in a fully open state will come into partial contact (in other words, the surface contact between the two will be insufficient), creating a wedge-shaped gap between the magnet M and the door D. When this wedge-shaped gap occurs, the force with which the magnet M attracts the door D cannot be greater than the automatic closing force of the door closer, and the door D will automatically close due to the door closer.

[0028] Therefore, in one embodiment of the present invention, as a solution, as can be seen from the change from Figure 1(D) to Figure 1(F) or from Figure 1(E) to Figure 1(H), when magnet M is attracted to the opposing surface of door D, magnet M swings to the left or right to match the opposing surface of door D, thereby eliminating the wedge-shaped gap between the magnet plane and the door surface, and magnet M is completely attracted to door D, thereby giving it the function of holding door D in a fully open position. Another solution, as can be seen from the change from Figure 1(D) to Figure 1(G) or from Figure 1(E) to Figure 1(I), is that when magnet M is attracted to the opposing surface of door D, the mounting surface of the support body supporting magnet M slides toward the door and rotates slightly, or when magnet M and door D are positioned approximately parallel to each other without forming an angle but are separated by a certain distance and sufficient attraction is not achieved, the mounting surface of the support body supporting magnet M slides toward the door (the mounting surface of the support body does not rotate or does not rotate substantially), thereby eliminating the wedge-shaped gap between the plane of magnet M and the opposing surface of door D and allowing magnet M to be fully attracted to door D and hold door D in a fully open position.

[0029] Detailed configurations will be described below in first to fourth embodiments.

[0030] [First embodiment] Figures 2A and 2B show a double door stopper 1 according to a first embodiment of the present invention. Specifically, Figure 2A shows a longitudinal front view of the double door stopper 1, and Figure 2B shows a cross-sectional view taken along line IIb-IIb in Figure 2A.

[0031] [Basic configuration] As shown in FIG. 2A, this double door stopper 1 is a combination structure of door stop 10 having buffer body 13 and door stopper 20 having magnet M. Door stop 10 has buffer body 13 attached to the top of support post 12, and a screw hole (unnumbered) threaded into the underside of support post 12 is screwed onto anchor bolt 11 rising from the floor. Door stopper 20 includes support body 21 having mounting surface 21a (for the floor) and rising surface 21b, which is slidably and rotatably engaged with anchor bolt 11, and magnet M attached to the outward surface of rising surface 21b. Note that, while door stopper 20 has been described here as having support body 21 slidably and rotatably engaged with anchor bolt 11, support body 21 may alternatively be slidably or rotatably engaged with anchor bolt 11.

[0032] The magnet M is a circular plate-shaped body. The magnet M may be any of a neodymium magnet, a ferrite magnet, a samarium-cobalt magnet, or an alnico magnet, but is not limited to these magnets. If the door D is a wooden door, a metal plate or a magnetic plate may be attached as a magnetically attracted part to the surface of the door D facing the magnet M.

[0033] This double door stopper 1 has a normal function of positioning the magnet M so that it does not come into contact with the single-wing door D, which is automatically closed by the door closer during normal entry and exit of the room (Figure 1(B)), so that when the door is fully open, the door D is stopped by the buffer body 13 of the door stopper 20, allowing the door to be closed by the door closer afterwards.

[0034] In addition, this double door stopper 1 has an emergency function in which, during emergency entry or exit such as room cleaning or construction, the magnet M is positioned so that it abuts against the opposing surface of the door D, which is in a fully open state, thereby magnetically attracting the door D and maintaining the door in a fully open state.

[0035] [First characteristic configuration] The magnet M is covered all around with a cushioning material (no reference numeral). The cushioning material may be a soft resin such as felt, or a soft rubber such as silicone rubber, and either may be covered by a required coating technique. The magnet M may be surrounded by a yoke (not shown), in which case the magnet M and the yoke may be covered all around with the cushioning material.

[0036] The magnet M is connected to the outward surface of the rising surface portion 21b of the support 21 via a horizontal shaft 22 and is capable of swinging in a horizontal plane.

[0037] More specifically, the horizontal shaft 22 in this embodiment has a base-side shaft portion 22a and a tip-side shaft portion 22b. The male threaded portion of the base-side shaft portion 22a is passed through a bolt-through hole drilled in the rising surface portion 21b and is double-threaded with a nut 22e, thereby fixing the base-side shaft portion 22a in a state where it projects horizontally from the rising surface portion 21b. The tip-side shaft portion 22b is connected to the base-side shaft portion 22a with a split pin 22c (which may be a pin shaft) and is swivelable within a horizontal plane. The distal shaft portion 22b is fitted into a bolt-through hole drilled at the center of the face of the magnet M (although the description will be given assuming the center of the face, it does not necessarily have to be the center of the face), and a machine screw 22d is tightly fastened to an internal thread threaded from the distal face of the distal shaft portion 22b from the opposite side to the base-side shaft portion 22a, so that the magnet M can pivot in a horizontal plane around a split pin 22c at the connection between the distal shaft portion 22b and the base-side shaft portion 22a, which projects horizontally from the rising surface portion 21b. Note that the machine screw 22d may be fixed to the base-side shaft portion 22a by welding, brazing, or adhesive. Furthermore, the distal shaft portion 22b is not limited to being connected by the split pin 22c described above, and may be, for example, a pin shaft or other mechanisms (not listed here) as long as they enable the distal shaft portion 22b to be pivoted in a horizontal plane relative to the base-side shaft portion 22a.

[0038] In addition to the fact that magnet M can swing in a horizontal plane around split pin 22c as the center of rotation, two elastic bodies 23 arranged on either side of horizontal shaft 22 between rising surface portion 21b and magnet M pull magnet M so that the biasing force is balanced on the left and right, so that base end shaft portion 22a and tip end shaft portion 22b are positioned on a single axis and are held stationary with the axial center of horizontal shaft 22 coinciding with the center of the surface of magnet M. Thus, when magnet M is stationary at the center of the swing range and an external force acts on it, it tilts horizontally toward the side to which the force is applied.

[0039] Both ends of each elastic body 23 are hooked to the protruding ends of brackets 22f and 22g, and are in a tensioned state. Bracket 22f protrudes integrally from base-end shaft portion 22a, extends horizontally in close contact with rising surface portion 21b, and bracket 22g protrudes integrally from tip-end shaft portion 22b, extends horizontally in close contact with magnet M.

[0040] Therefore, the magnet M is supported by the horizontal shaft 22 and the two elastic bodies 23 on the upright surface portion 21b. to The gyro is held parallel to the gyro and spaced apart by a required distance, and is swingable at least in the horizontal direction and is held stationary at the center of amplitude.

[0041] In this embodiment, a tension coil spring is used as the elastic body 23, but a compression coil spring, tension rubber, or compression rubber may also be used.

[0042] [Effect] In order to accurately position the attraction surface of magnet M relative to the opposing surface of door D when it is fully open, the magnet M should be precisely parallel to the door D when it comes into contact with it, but inaccurate positioning often occurs, with a wedge-shaped gap of, for example, ±5 to 10 degrees between magnet M and door D. In this case, magnet M comes into contact with door D on one side (Fig. 1(D) or Fig. 1(E)).

[0043] When magnet M comes into contact with door D in the fully open state, it makes a one-sided contact, creating a wedge-shaped gap between magnet M and door D. When this happens, the pressing force of door D on magnet M causes magnet M to tilt and come into full contact with door D to eliminate the wedge-shaped gap (tilting function from Figure 1(D) to Figure 1(F), or tilting function from Figure 1(E) to Figure 1(H)).

[0044] [Second characteristic configuration] An elongated hole 24 is provided in the mounting surface 21a of the support 21, and an annular spacer 25, which is, for example, 0.3-0.5 mm thicker than the mounting surface 21a, is slidably fitted into the elongated hole 24, and the anchor bolt 11 passes through this spacer 25. Therefore, the support 12 presses the spacer 25 against the floor surface, and slidably presses it against the mounting surface 21a without any rattle. Note that one side of the elongated hole 24 provided in the mounting surface 21a is cut out. And In this case, when inserting the mounting surface portion 21a of the support body 21 under the existing door stop 10, the mounting surface portion 21a can be slid sideways so that the spacer 25 can be inserted into the elongated hole 24 from the cut portion on one side of the elongated hole 24. In a configuration without the spacer 25, the mounting surface portion 21a is loosened by a thickness that allows the mounting surface portion 21a to be inserted.

[0045] Therefore, since the mounting surface portion 21a is not fastened and fixed by the door stop 10, when the magnet M is rotated so that it is in front of the door stop 10, which is in a fully open state during emergency entry and exit, if the magnet M is positioned incorrectly and a wedge-shaped gap of, for example, an angle of ±5 to 10 degrees is created between the magnet M and the door D when the magnet M comes into contact with the door D, resulting in a one-sided contact where a wedge-shaped gap is created between the magnet M and the door D (Figure 1(D) or Figure 1(E)), the magnetic attraction of the magnet M to the door D causes the mounting surface portion 21a to slide toward the door and rotate slightly, eliminating the wedge-shaped gap, and thereby providing the function of magnet M being in full contact with the door D (tilting function from Figure 1(D) to Figure 1(G), or tilting function from Figure 1(E) to Figure 1(I)).

[0046] As a further variation of the second characteristic configuration described above, when the magnet M and the door D are positioned approximately parallel to each other without forming an angle with each other but are separated by a certain distance and sufficient adhesion cannot be obtained, the magnetic attraction of the magnet M to the door D may cause the mounting surface portion 21a to simply slide toward the door but not rotate or not rotate substantially (for example, a function realized by a configuration (not shown) in which the magnet M is tightly fixed to the rising surface portion 21b), and this case can also be considered to be included in the case of the second characteristic configuration described above.

[0047] [Relationship between the first characteristic feature and the second characteristic feature] It is sufficient to have either the first or second characteristic feature. Claim 1 includes the first characteristic feature, claim 2 includes the second characteristic feature, and claim 3 includes both the first and second characteristic features. Each of the following embodiments of the present invention will be described as including both the first and second characteristic features, but as described above, it is sufficient to have at least one of the first or second characteristic feature in each of the following embodiments as a means for solving the above-mentioned problem of the present invention. Note that an embodiment that does not include the first characteristic feature can have a configuration in which a magnet is tightly fixed to the raised surface portion.

[0048] The double door stoppers 1A-1C according to the second to fourth embodiments described below have the same basic configuration as that described for the first embodiment, and only the characteristic configurations of each double door stopper will be described.

[0049] [Second embodiment] 3A and 3B show a double door stopper 1A according to a second embodiment of the present invention. Specifically, Fig. 3A shows a longitudinal front view of the double door stopper 1A, and Fig. 3B shows a cross-sectional view taken along line IIIb-IIIb in Fig. 3A. As shown in these figures, the double door stopper 1A is a combination of a door stopper 10A having a buffer body 13 and a door stopper 20A having a magnet M. The door stopper 10A and the support body 21A and spacer 25 of the door stopper 20A are configured in the same manner as in the first embodiment.

[0050] The characteristic configuration of this compound door stopper 1A is as follows: A rectangular hole (unnumbered) is provided in the rising surface portion 21b, and a pair of upper and lower rectangular plate-shaped horizontal guides 26 are fixedly attached (e.g., welded) to the upper and lower edges of this rectangular hole in a penetrating manner, in close contact with the upper and lower edges. A horizontal shaft 22A is sandwiched between the pair of upper and lower horizontal guides 26 and connected to the horizontal guides 26 on the rising surface portion 21b side by a pin shaft 27. The pin shaft 27 passes through pin shaft through-holes in the upper horizontal guide 26 and the horizontal shaft 22A and is tightly screwed into a screw hole in the lower horizontal guide 26. The axial center at the tip of the horizontal shaft 22A coincides with the surface center of the magnet M. The axial center at the base end of the horizontal shaft 22A coincides with the width center of the rising surface portion 21b.

[0051] The tip side of the horizontal shaft 22A protrudes beyond the protruding ends of the upper and lower horizontal guides 26, and the tip is fixedly connected to the magnet M. More specifically, the horizontal shaft 22A is fitted into a bolt-through hole drilled in the center of the face of the magnet M, and a machine screw 22d is tightly fastened from the opposite side to a female screw threaded from the tip face of the tip-side shaft portion 22b, so that the magnet M is fixed to the tip of the horizontal shaft 22A and can swing in a horizontal plane around the pin shaft 27 as the center of rotation.

[0052] In addition to the fact that magnet M can swing in a horizontal plane around pin shaft 27 as a rotation center, two elastic bodies 28 arranged on either side of horizontal shaft 22A between rising surface portion 21b and magnet M pull magnet M so that the biasing force is balanced on the left and right, so that magnet M is held stationary with the center of its surface coinciding with the axial centerline of horizontal shaft 22A. Thus, when magnet M is stationary at the center of its swing range and an external force acts on it, it tilts horizontally toward the side where the force is applied.

[0053] Both ends of each elastic body 28 are hooked onto the protruding ends of brackets 26a and 22g, placing them in a tensioned state. Bracket 26a protrudes horizontally, integrally with the upper and lower horizontal guides 26. Bracket 22g protrudes horizontally, integrally with horizontal shaft 22A, and extends horizontally in close contact with magnet M.

[0054] In this embodiment, the elastic body 28 uses compression rubber, but a compression coil spring, tension coil spring, or tension rubber may also be used. The pin shaft 27 may be provided on the side of the rising surface portion 21b where the magnet M is located. The upper and lower horizontal guides 26 may also be box-shaped with their widthwise edges closed. Furthermore, a rib may be provided to support the lower horizontal guide 26.

[0055] The above characteristic configuration corresponds to the first characteristic configuration described in the first embodiment.

[0056] Therefore, in this embodiment, when the magnet M comes into contact with the door D in a fully open state, it makes a one-sided contact, creating a wedge-shaped gap between the magnet M and the door D, and the magnet M tilts due to the pressing force of the door D to eliminate the wedge-shaped gap and come into full contact with the door D (tilting function from Figure 1(D) to Figure 1(F), or tilting function from Figure 1(E) to Figure 1(H)).

[0057] As with the first embodiment, the double door stopper 1A of this embodiment has a configuration in which an elongated hole 24 is provided in the mounting surface 21a of the support body 21, an annular spacer 25 is slidably fitted into the elongated hole 24, and an anchor bolt 11 passes through the spacer 25. Therefore, this embodiment has the same second characteristic configuration as the first embodiment, and also has the same function (tilting function from Fig. 1(D) to Fig. 1(G) or tilting function from Fig. 1(E) to Fig. 1(I)).

[0058] [Third embodiment] 4 is a vertical sectional front view of a double door stopper according to a third embodiment of the present invention. As shown in the figure, this double door stopper 1B is a combination of a door stopper 10B having a buffer body 13 and a door stopper 20B having a magnet M. The door stopper 10B, and the support body 21B and spacer 25 of the door stopper 20B have the same configuration as those in the first embodiment.

[0059] The characteristic configuration of this double door stopper 1B is as follows: The tip of horizontal shaft 22B is fixedly connected to magnet M so that the tip coincides with the center of the surface of magnet M, the base end of horizontal shaft 22B passes through a shaft hole drilled in the center of the width of rising surface 21b, and a pin-through hole is provided at the base end of horizontal shaft 22B through which a split pin 29 is inserted to prevent the base end of horizontal shaft 22B from slipping out of the shaft hole in rising surface 21b. Note that a nut may be used instead of split pin 29.

[0060] A spiral spring 30 is provided around the horizontal shaft 22B between the rising surface portion 21b and the magnet M. The small diameter end of the spiral spring 30 presses against the rising surface portion 21b, and the large diameter end presses against the magnet M, so that the door D, which is fully opened relative to the magnet M, is urged to move in a unilateral direction. WinWhen the load is applied, the magnet M can swing up, down, left, or right depending on the load, and remains stationary at the center of its amplitude. Therefore, the magnet M is spaced apart from one side of the rising surface portion 21b by the horizontal shaft 22B and the coil spring 30, and is stationary with its attracting surface aligned with the vertical plane, and when a load is applied from the door D, the magnet M swings and comes into full contact with the opposing surface of the door D, even if the opposing surface of the magnet M and the door D are not parallel and make a one-sided contact.

[0061] The above characteristic configuration corresponds to the first characteristic configuration described in the first embodiment. This double door stopper 1B has the same second characteristic configuration and function as the first embodiment, and therefore the description thereof will be omitted.

[0062] [Fourth embodiment] 5A and 5B show a dual door stopper 1C according to a fourth embodiment of the present invention. Specifically, Fig. 5A shows a longitudinal front view of the dual door stopper 1C, and Fig. 5B shows a cross-sectional view taken along line Vb-Vb in Fig. 5A. As shown in these figures, the dual door stopper 1C is a combination of a door stopper 10C having a buffer 13 and a door stopper 20C having a magnet M. The door stopper 10C and the support 21C and spacer 25 of the door stopper 20C are configured in the same manner as in the first embodiment.

[0063] This compound door stopper 1C has the following characteristic configuration: it has two horizontal shafts 22C that connect the rising surface portion 21b and the magnet M. The two horizontal shafts 22C are arranged parallel to one another in a plan view, and the base end of each horizontal shaft 22C is passed through a shaft hole 26 drilled in the rising surface portion 21b, and a split pin 29 is provided to prevent the shaft from slipping out. Note that a nut may be used instead of the split pin 29.

[0064] A coil spring 31 is provided around each horizontal shaft 22C between the rising surface portion 21b and the magnet M. Both ends of the coil spring 31 are tensioned against the rising surface portion 21b and the magnet M, so that the door D, which is fully opened relative to the magnet M, is inclined. WinWhen the load is applied, the magnet M can swing to the left or right depending on the load, and when there is no load, it remains stationary at the center of its amplitude. Therefore, the magnet M is spaced apart from one side of the rising surface portion 21b by the horizontal shaft 22C and the coil spring 31, and is stationary with its attracting surface aligned with the vertical plane, and when a load is applied from the door D, the magnet M swings and comes into full contact with the opposing surface of the door D, even if the opposing surface of the magnet M and the door D are not parallel and make a one-sided contact.

[0065] The above characteristic feature corresponds to the first characteristic feature described in the first embodiment. This double door stopper 1 also has the second characteristic feature described in the first embodiment, and therefore the description thereof will be omitted.

[0066] In addition, an embodiment that includes the first characteristic configuration but does not include the second characteristic configuration can be configured so that the mounting surface portion 21a of the support body 21 has a round hole through which the anchor bolt 11 passes, rather than a long hole 24. [Industrial Applicability]

[0067] The double door stoppers according to each aspect and configuration of the present invention are excellent in terms of safety, convenience, and providing appropriate service to customers, and have great applicability in various industries including the hotel industry, housing industry, and construction industry. [Explanation of symbols]

[0068] 1, 1A, 1B, 1C...Double door stopper, D...door, W…Room wall, 10...per household, 11...Anchor bolt, 12...Strut, 13...buffer, 20...door stopper, 21, 21A, 21B, 21C...Support, 21a...Mounting surface part, 21b...Rising surface part, M...Magnet, 22, 22A, 22B, 22C…horizontal axis, 22a...Proximal shaft part, 22b...Tip side shaft part, 22c...pin shaft, 22d...machine screws, 22e...nut, 22f, 22g... bracket, 23...elastic body, 24...long hole, 25...Spacer, 22A...Support shaft, 26...Horizontal guide, 26a...bracket, 27...Pin shaft, 28...elastic body, 29...cotter pin, 30...spiral spring, 31... Coil spring

Claims

1. A door stop having a buffer body on the top of the support pillar, and an anchor bolt rising from the floor surface is screwed into a screw hole of the support pillar; a door stopper including a support body having a mounting surface portion and a rising surface portion, the support body being slidably and rotatably engaged with the anchor bolt, and a magnet attached to the outward surface of the rising surface portion; During normal use, the magnet is positioned so as not to come into contact with the single-wing door that is automatically closed by the door closer when the door is fully open. This allows the door to be stopped by the buffer body of the door stopper when the door is fully open, and then the door can be closed by the door closer. During emergency entry and exit, such as during room cleaning or construction, the magnet is positioned to come into contact with the door when it is fully open, thereby magnetically attracting the door and maintaining the door in the fully open state. The magnet is a plate-like body covered with a cushioning material, and is held via a horizontal shaft and an elastic body for connecting to the rising surface portion so as to be approximately parallel to the outward surface side of the rising surface portion and spaced a required distance apart, and so as to be able to swing at least in the horizontal direction and to remain stationary at the center of amplitude, so that the magnet is positioned in front of the door stop during emergency entry or exit, and when it abuts against the door in a fully open state, it makes a one-sided contact and creates a wedge-shaped gap between the magnet and the door, and has a swing adjustment function in which the magnet tilts due to the pressing force of the door to eliminate the wedge-shaped gap and comes into full contact with the door. A double door stopper characterized by:

2. A door stop having a buffer body on the top of the support pillar, and an anchor bolt that passes through a spacer from the floor and is screwed into the screw hole of the support pillar; a door stopper including a support body having a mounting surface portion and a rising surface portion, the support body being slidably and rotatably engaged with the anchor bolt, and a magnet attached to the outward surface of the rising surface portion; During normal use in entering and exiting the room, the magnet is positioned so as not to come into contact with the single-wing door that is automatically closed by the door closer when the door is fully open, and the spacer is pressed against the floor surface, so that when the door is fully open, the door is stopped by the buffer body of the door stopper, and then the door can be closed by the door closer. During emergency entry and exit, such as during room cleaning or construction, the magnet is positioned to come into contact with the door when it is fully open, thereby magnetically attracting the door and maintaining the door in the fully open state. The magnet has a configuration in which an elongated hole is provided in the mounting surface portion of the support body and the anchor bolt passes through the elongated hole, so that when the mounting surface portion is not fastened and fixed by the door stop during emergency entry and exit and the magnet is positioned in front of the door stop when the magnet is in a fully open state, when it abuts against the door and a wedge-shaped gap is created between the magnet and the door due to a one-sided abutment, the mounting surface portion slides toward the door due to magnetic attraction, eliminating the wedge-shaped gap and coming into full contact with the door, thereby providing a slide adjustment function. A double door stopper characterized by:

3. A door stop having a buffer body on the top of the support pillar, and an anchor bolt rising from the floor surface is screwed into a screw hole of the support pillar; a door stopper including a support body having a mounting surface portion and a rising surface portion, the support body being slidably and rotatably engaged with the anchor bolt, and a magnet attached to the outward surface of the rising surface portion; During normal use, the magnet is positioned so as not to come into contact with the single-wing door that is automatically closed by the door closer when the door is fully open. This allows the door to be stopped by the buffer body of the door stopper when the door is fully open, and then the door can be closed by the door closer. During emergency entry and exit, such as during room cleaning or construction, the magnet is positioned to come into contact with the door when it is fully open, thereby magnetically attracting the door and maintaining the door in the fully open state. The magnet is a plate-like body covered with a cushioning material, and is held parallel to the outward surface of the rising surface and spaced a required distance from it via a horizontal shaft and an elastic body for connecting to the rising surface, and is able to swing at least horizontally and stay at the center of its amplitude. Therefore, during emergency entry or exit, the magnet is positioned in front of the door stop, and when it abuts against the door in a fully open state, it abuts only on one side, creating a wedge-shaped gap between the magnet and the door, and has a swing adjustment function in which the magnet tilts to eliminate the wedge-shaped gap due to the pressing force of the door and comes into full contact with the door. The magnet has a configuration in which an elongated hole is provided in the mounting surface portion of the support body and the anchor bolt passes through the elongated hole, so that when the mounting surface portion is not fastened and fixed by the door stop during emergency entry and exit and the magnet is positioned in front of the door stop when it is fully open, when it abuts against the door and a wedge-shaped gap is created between the magnet and the door due to a one-sided abutment, the mounting surface portion slides toward the door and rotates slightly due to magnetic attraction, eliminating the wedge-shaped gap and having a slide adjustment function in which it comes into full contact with the door. A double door stopper characterized by:

4. 4. The double door stopper according to claim 3, further comprising a switching mechanism that can alternately switch between the swing adjustment function and the slide adjustment function.

5. The door stopper of any one of claims 1 or 3, characterized in that the base end of the horizontal shaft is fixedly connected to the raised surface portion so that the horizontal shaft extends horizontally, and the magnet is connected to the tip of the horizontal shaft so that it can swivel in a horizontal plane with the axial center at the tip of the horizontal shaft coinciding with the surface center of the magnet, and further, the elastic bodies provided on both horizontal sides of the tip of the horizontal shaft bias the magnet so that the swivel of the magnet in the horizontal plane is stopped at the center of amplitude.

6. The door stopper of any one of claims 1 or 3, characterized in that the tip of the horizontal shaft and the magnet are fixedly connected so that the axial center at the tip of the horizontal shaft coincides with the surface center of the magnet, the base end of the horizontal shaft is engaged with the raised surface portion so that the axial center at the base end of the horizontal shaft coincides with the width center of the raised surface portion, the horizontal shaft is sandwiched and guided by a pair of upper and lower horizontal guides provided on the raised surface portion and can swing within a horizontal plane, and the horizontal shaft is biased from both horizontal sides by the elastic body and stops at the center of amplitude within the horizontal plane.

7. The tip of the horizontal shaft and the magnet are fixedly connected so that the tip of the horizontal shaft coincides with the face center of the magnet, the base end of the horizontal shaft is passed through an axial hole drilled in line with the width center of the raised surface portion and a nut is fastened to prevent the hole from coming loose, and the small diameter end of a spiral spring provided so that the horizontal shaft passes through the spring axis center presses against the raised surface portion while the large diameter end of the spiral spring presses against the magnet, so that the tip side of the horizontal shaft can swing up and down and left and right depending on the load and remains stationary at the center of amplitude when there is no load.

4. A double door stopper according to claim 1 or 3.

8. The door stopper of any one of claims 1 or 3, characterized in that the horizontal shaft has two parallel horizontal shafts in a planar view so as to connect the raised surface portion and the magnet, the base end of each horizontal shaft is passed through an axial hole drilled in the raised surface portion and a nut is fastened to prevent the hole from falling out, and the horizontal shaft is arranged so that the horizontal shaft passes through the center of the spring axis, and both ends of the coil spring are pressed against the raised surface portion and the magnet, so that the tip side of the horizontal shaft can swing left and right depending on the load and remains stationary at the center of amplitude when there is no load.

9. The door stopper of claim 2 or 3, wherein a spacer ring slightly thicker than the mounting surface of the door stopper is provided below the door stopper, the anchor bolt passes through the spacer ring, and the spacer ring is loosely fitted into an elongated hole in the mounting surface, the spacer ring is clamped between the door stopper and the floor surface, and when the magnet abuts the door and makes a one-sided contact, creating a wedge-shaped gap between the magnet and the door, the mounting surface slides toward the door and rotates slightly due to magnetic attraction, eliminating the wedge-shaped gap and making full contact with the door.

10. 2. The double door stopper according to claim 1, wherein the magnet is surrounded by a yoke and further coated on the outside with resin or soft rubber.

11. 2. The compound door stopper of claim 1, wherein the magnet is one of a neodymium magnet, a ferrite magnet, a samarium-cobalt magnet, and an alnico magnet.

12. 2. The double door stopper according to claim 1, wherein the mounting surface of the door stopper is provided with an elongated hole, one side of which is cut off.

13. The door is made of wood, 4. The double door stopper according to claim 1, wherein a magnetic plate is attached to the surface of the door that comes into contact with the magnet.

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