Double door stopper

Abstract

This invention provides a double door stopper that, when switched to the emergency entry / exit function, can automatically correct the wedge-shaped gap between the magnetic surface and the fully open single door, thereby eliminating the gap and maintaining full contact, and thus maintaining the open door position. [Solution] The door stopper 10 has a buffer body 13 erected on the floor surface and a door stopper 20 has a magnet M and is slidably and rotatably mounted relative to the door stopper 10. The magnet M is elastically held so as to be able to swing horizontally via a horizontal axis 22 and an elastic body 23 connected to a rising surface portion 21b. The magnet M is positioned in front of the door stopper when emergency entry or exit occurs. If the positioning of the magnet M relative to the door D is inaccurate, and the magnet M makes contact with the fully open door D, resulting in a wedge-shaped gap between the magnet M and the door D, the magnet M has the function of tilting to eliminate the wedge-shaped gap due to the pressing force of the door D and making full contact with the door D.

Description

Technical Field

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

Background Art

[0002] The double door stopper shown in FIG. 6 of Patent Document 1 has a combination structure of a doorstop 200 having a buffer body standing on the floor surface and a door stopper 100 provided slidably and rotatably with respect to the doorstop 200 and having a magnet. The combination structure of the doorstop 200 and the door stopper 100. By changing the position of the door stopper 100 with respect to the doorstop 200, which is rotatably sandwiched under the lower surface of the column of the doorstop 200, by about 90 degrees, it can be switched between the function during normal entry and exit and the function during emergency entry and exit. The function during normal entry and exit means that when a single-opening door closed by a door closer is fully opened, the magnet M of the door stopper 100 is in a retracted position from between the single-opening door and the doorstop 200, and the fully opened door is not attracted by the magnet M and is allowed to buffer-stop against the doorstop 200 and then automatically close. The function during emergency entry and exit means that when entering and exiting the room for cleaning, loading and unloading luggage, maintenance, etc. inside the room, the magnet M of the door stopper 100 is fixed in position between the fully opened single-opening door and the doorstop 200, and the magnet M attracts the magnetic surface of the single-opening door to hold the open state.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The door stopper 100 disclosed in Patent Document 1 has a problem in that when switched to the emergency entry / exit function, the plane of the magnet M and the magnetic surface of the fully open single-leaf door do not become parallel and come into close contact, resulting in magnetic attraction. Instead, if there is even a slight angle difference of, for example, 5 degrees in a plan view, it makes contact on one side, creating a wedge-shaped gap. In this case, the magnet M cannot be attracted to the magnetic surface of the single-leaf door, and therefore cannot perform the function of holding the door open. When the function of holding the door open cannot be performed, it becomes necessary to manually grasp the door stopper 200, loosen the support column 30, bring the magnet M into close contact with the magnetic surface of the single-leaf door, and then tighten the support column 30, which is a two-step process. In addition, the part of the door surface that makes contact on one side will be scratched.

[0005] The present invention was made to overcome the problems of the prior art described above, and aims to provide a double door stopper that, when switched to the emergency entry / exit function, even if the orientation of the magnet's plane is not precisely positioned, causing the magnet's plane to make contact with the magnetic surface of the fully open single door, creating a wedge-shaped gap, automatically corrects so that the magnet's plane makes full contact with the magnetic surface of the fully open single door, thereby maintaining the open door position. [Means for solving the problem]

[0006] In solving the above problems, the inventors, after thorough consideration, conceived of a double door stopper, which is a combination structure of a door stopper and a door stopper, and which can switch between a function that buffers and stops the door before it hits the wall when a single-leaf door that is automatically closed by a door closer is fully opened, allowing the door to continue to close automatically, and a function that locks the door in the fully open position.

[0007] More specifically, the inventors have diligently researched the assembly structure of the magnet support to the rising surface portion so that when the magnet is attracted to the door surface, the magnet swivels to the left or right in accordance with the door surface, eliminating the wedge-shaped gap between the magnet plane and the door surface, and the mounting surface portion of the support portion slides in the direction of the door and rotates slightly when the magnet is attracted to the door surface, thereby eliminating the wedge-shaped gap between the magnet plane and the door surface, and thus avoiding pinching and fixing of the mounting surface portion of the support. As a result, the inventors have completed the present invention.

[0008] Therefore, in order to solve the above problem, the double door stopper according to the first aspect of the present application comprises a door stopper having a buffer at the top of a support column and screwing the screw hole of the support column to an anchor bolt rising from the floor surface, and a support having a mounting surface and a rising surface, which is slidably and rotatably engaged with the anchor bolt and has a magnet attached to the outward-facing side of the rising surface, and has a normal function in which, when the door is fully open, the magnet is positioned so as not to come into contact with the single-leaf door that is automatically closed by a door closer when the door is fully open, thereby stopping the door by buffering against the buffer of the door stopper and then allowing the door closer to close the door, and in the case of emergency entry or exit such as cleaning or construction of the room, the magnet is positioned so as to come into contact with the door when it is fully open The device has an emergency function that magnetically attracts the fully open door and holds it in the fully open position, and the magnet is a plate-shaped body covered with a cushioning material, and is held to rest at the center of amplitude, swinging at least horizontally, via a horizontal axis connected to the rising surface and an elastic body, in a state that is substantially parallel to the outward-facing surface of the rising surface and spaced a required distance apart, so that the magnet is positioned in front of the door stop when emergency entry or exit occurs, and when the magnet comes into contact with the fully open door (for example, due to inaccurate positioning of the magnet relative to the door), it makes contact on one side and a wedge-shaped gap is created between the magnet and the door, and the device has a swing adjustment function that tilts to eliminate the wedge-shaped gap due to the pressing force of the door and makes full contact with the door.

[0009] A double door stopper according to a second aspect of the present application, in order to achieve the above objective, comprises a door stopper having a buffer at the top of a support column and a screw hole in the support column that is screwed into an anchor bolt rising from the floor surface, and a support having a mounting surface and a rising surface that is slidably and rotatably engaged with the anchor bolt and a magnet attached to the outward-facing side of the rising surface, and has a normal function in which, when the door is fully open, the door is buffered and stopped by the buffer of the door stopper and then closed by the door closer when the door is fully open by positioning the magnet so that it does not come into contact with the single-leaf door that is automatically closed by a door closer when the door is fully open, and in the event of emergency entry or exit such as cleaning or construction of the room, the magnet is positioned to come into contact with the door when the door is fully open, The device has an emergency function that magnetically attracts the door and holds it in a fully open state, 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, so that when the mounting surface is not tightened and fixed by the door stopper during emergency entry and exit, and the magnet is positioned in front of the door stopper that is in a fully open state, (for example, when the positioning of the magnet relative to the door is inaccurate and the magnet) makes contact with the door, resulting in one-sided contact and creating a wedge-shaped gap between the magnet and the door, the mounting surface slides toward the door (or slides toward the door and rotates slightly) due to magnetic attraction, thereby eliminating the wedge-shaped gap and making full contact with the door, and thus has a slide adjustment function.

[0010] A double door stopper according to a third aspect of the present application, in order to achieve the above objective, comprises a door stopper having a buffer at the top of a column and a screw hole in the column that is screwed into an anchor bolt rising from the floor surface, and a support having a mounting surface and a rising surface that is slidably and rotatably engaged with the anchor bolt and a magnet attached to the outward-facing side of the rising surface, wherein when entering or exiting a room for normal use, the magnet is positioned so as not to come into contact with a single-leaf door that is automatically closed by a door closer that is in a fully open state, so that when the door is fully open, the front The normal function is to stop the door by the cushioning element of the door stopper, and then allow the door closer to close the door. In the event of emergency entry or exit such as cleaning or construction work in the room, the magnet is positioned to contact the fully open door, thereby magnetically attracting the fully open door and holding it in the fully open position. The magnet is a plate-shaped body covered with cushioning material, and is connected to the rising surface via a horizontal axis and an elastic body, and is parallel to the outward-facing surface of the rising surface and spaced a required distance apart, and is capable of swinging at least horizontally and having an amplitude center. The magnet is held stationary so that it is positioned in front of the door stop during emergency entry and exit, and when the magnet comes into contact with the fully open door (for example, due to inaccurate positioning of the magnet relative to the door), it makes contact on one side, creating a wedge-shaped gap between the magnet and the door. The magnet has a swing adjustment function that allows it to tilt to eliminate the wedge-shaped gap due to the pressing force of the door and make full contact with the door, and the magnet has an elongated hole provided in the mounting surface of the support, through which the anchor bolt passes. The present invention provides a slide adjustment function that, in the event of emergency entry or exit, when the mounting surface is not tightened and fixed by the door stopper and the magnet is positioned in front of the door stopper in its fully open state, and when the magnet comes into contact with the door (for example, due to inaccurate positioning of the magnet relative to the door), and one contact occurs, 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 to eliminate the wedge-shaped gap and make full contact with the door.

[0011] In a fourth aspect of the present application, in any one of the first or third aspects described above, a switching mechanism may be further provided that allows the oscillation adjustment function and the slide adjustment function to be switched alternately. The switching mechanism can be implemented, for example, by a locking mechanism that locks the other function when one of the two functions, the oscillation adjustment function or the slide adjustment function, is being performed, and a switching mechanism that allows either of the two functions to be selectively activated.

[0012] As a fifth aspect of the present application, in any one of the first or third aspects described above, the base end of the horizontal axis is fixedly connected to the rising surface so that the horizontal axis extends horizontally, and the magnet is connected to the tip of the horizontal axis so that it can oscillate in the horizontal plane such that the axis center at the tip of the horizontal axis coincides with the surface center of the magnet, and the elastic bodies provided on both sides in the horizontal direction at the tip of the horizontal axis bias the magnet so that the oscillation of the magnet in the horizontal plane is stationary at the amplitude center.

[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 are fixedly connected such that the axis 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 rising surface such that the axis center at the base end of the horizontal shaft coincides with the width center of the rising surface, and the horizontal shaft is guided by a pair of upper and lower horizontal guides provided from the rising surface and is able to swing in the horizontal plane, and the horizontal shaft is biased from both sides in the horizontal direction by the elastic body and is stationary at the amplitude center in 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 are fixedly connected such that the tip of the horizontal shaft coincides with the center of the magnet's surface, the base end of the horizontal shaft is passed through an axial hole drilled to coincide with the center of the width of the rising surface and a nut is fastened to prevent it from coming out of the hole, and the small diameter end of a spiral spring provided so that the horizontal shaft passes through the center of the spring axis is braced against the rising surface and the large diameter end of the spiral spring is braced against the magnet, so that the tip of the horizontal shaft can swing up and down and left and right in response to a load and remain stationary at the center of the 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 shafts are two parallel shafts in a plan view that connect the rising surface and the magnet, the base end of each horizontal shaft is passed through an axial hole drilled in the rising surface and fastened with a nut to prevent it from coming out of the hole, and both ends of a coil spring provided so that the horizontal shaft passes through the center of the spring axis are braced against the rising surface and the magnet, so that the tip of the horizontal shaft can swing from side to side in response to a load and remain stationary at the center of the amplitude when there is no load.

[0016] In a ninth aspect of the present application, in the second or third aspect described above, a spacer ring slightly thicker than the mounting surface of the door stopper is provided on the lower side of 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 pressed between the door stopper and the floor surface, and when the magnet comes into contact with the door, it makes contact on one side, creating a wedge-shaped gap between the magnet and the door. At this time, the mounting surface slides in the direction of the door and rotates slightly due to magnetic attraction, thereby eliminating the wedge-shaped gap and making full contact with the door.

[0017] In a tenth aspect of the present application, in the first embodiment described above, the magnet may be surrounded by a yoke and further covered on the outside with the resin or the soft rubber.

[0018] In an eleventh aspect of the present application, in the first embodiment described above, the magnet may be any of the following: a neodymium magnet, a ferrite magnet, a samarium cobalt magnet, or an alnico magnet.

[0019] In a twelfth aspect of the present application, in the first embodiment described above, the mounting surface of the door stopper may be provided with an elongated hole, and one side of the elongated hole may be cut off.

[0020] In a thirteenth aspect of the present application, in the first embodiment described above, the door may be made of wood, and a magnetic plate may be attached to the surface of the door that comes into contact with the magnet. [Effects of the Invention]

[0021] According to the present invention, even if the orientation of the magnet's plane is incorrectly positioned when switching to the emergency entry / exit function, causing the magnet's plane to make contact with the magnetic surface of the fully open single-leaf door, creating a wedge-shaped gap, the present invention provides a double door stopper that can automatically correct the position so that the magnet's plane makes full contact with the magnetic surface of the fully open single-leaf door, thereby maintaining the open door position. [Brief explanation of the drawing]

[0022] [Figure 1]The present invention relates to a double - door stopper common to each embodiment of the present invention. Fig. 1(A) is a plan view showing the mounting position of the double - door stopper. Fig. 1(B) is a simplified plan view showing the state where a door that fully opens against a doorstop during normal entry and exit is buffered and stopped. Fig. 1(C) is a simplified plan view of the double - door stopper in a state where the door stopper is accurately opposed to the opposing surface of the door during emergency entry and exit. Figs. 1(D) and 1(E) are simplified plan views of the double - door stopper in a state where the door stopper is inaccurately opposed to the opposing surface of the door during emergency entry and exit. Figs. 1(F) and 1(H) are simplified plan views of the double - door stopper showing the state where the magnet changes its orientation inaccurately and when it hits against the fully - opened magnet and becomes single - sided contact, and then the magnet changes its orientation and adheres to the entire surface of the door. Figs. 1(G) and 1(I) are simplified plan views of the double - door stopper showing the state where the support slides and changes its orientation and adheres to the entire surface of the door when the magnet changes its orientation inaccurately and hits against the fully - opened magnet and becomes single - sided contact during emergency entry and exit. [Figure 2A] It is a longitudinal front view of a double - door stopper according to the first embodiment of the present invention. [Figure 2B] It is a cross - sectional view taken along the line IIb - IIb in Fig. 2A of the double - door stopper according to the first embodiment of the present invention. [Figure 3A] It is a longitudinal front view of a double - door stopper according to the second embodiment of the present invention. [Figure 3B] It is a cross - sectional view taken along the line IIIb - IIIb in Fig. 3A of the double - door stopper according to the second embodiment of the present invention. [Figure 4] It is a longitudinal front view of a double - door stopper according to the third embodiment of the present invention. [Figure 5A] It is a longitudinal front view of a double - door stopper according to the fourth embodiment of the present invention. [Figure 5B] It is a cross - sectional view taken along the line Vb - Vb in Fig. 5A of the double - door stopper according to the fourth embodiment of the present invention.

Embodiments for Carrying out the Invention

[0023] Hereinafter, the double - door stopper according to the embodiments of the present invention will be described with reference to the drawings.

[0024] [Functions of a double door stopper according to an embodiment of the present invention] As shown in Figure 1(B), the double door stopper 1, like conventional door stoppers, has a configuration that combines a door stopper 10 having a buffer body erected on the floor surface and a door stopper 20 having a magnet and being slidably and rotatably mounted relative to the door stopper 10. As shown in Figure 1(A), the double door stopper 1 is installed on the floor surface so as to be positioned between the part of the door D facing the room wall 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) when a single-leaf door D that is automatically closed by a door closer (not shown) is in a fully open state (or substantially fully open state; the same applies hereinafter).

[0025] The double door stopper 1 is positioned so that the door stopper 10 contacts the door D when it is fully open during normal entry and exit, while the door stopper 20 is positioned so that it does not contact the door D. When the door D is fully open (or effectively fully open; the same applies hereafter), it contacts the door stopper 10 and is then automatically closed by the door closer.

[0026] Furthermore, as shown in Figure 1(C), in the event of an emergency entry or exit, the double door stopper 1 rotates the door stopper 20 approximately 90 degrees relative to the door stopper 10. This causes the magnet M of the door stopper 20 to make surface contact (their surfaces are in close contact) with the fully open door D. As a result, the magnetic door D is attracted by the magnet M, and the door D is held in the fully open position against the automatic closing force of the door closer.

[0027] However, problems can arise when the magnet M of the door stopper 20 is in close contact with the fully open door D during emergency entry / exit. This problem occurs when the orientation of the magnet M's plane is not precisely positioned, as shown in Figures 1(D) and (E). If the rotation angle is even slightly different from the precise position setting (i.e., the position where the plane of the magnet M and one surface of the fully open single-leaf door D make complete surface contact), the plane of the magnet M and the magnetic surface of the fully open single-leaf door D will only make 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, causing the door D to close automatically by the door closer.

[0028] Therefore, in one embodiment of the present invention, 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 the magnet M is attracted to the opposing surface of the door D, the magnet M swivels to the left or right in accordance with the opposing surface of the door D, thereby eliminating the wedge-shaped gap between the magnet plane and the door surface, and allowing the magnet M to be fully attracted to the door D, thus providing a function to hold the door D in a fully open state. 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 to eliminate the wedge-shaped gap between the plane of the magnet M and the opposing surface of the door D by either having the mounting surface of the support that holds the magnet M slide and rotate slightly in the direction of the door when the magnet M is attracted to the opposing surface of the door D, or, when the magnet M and the door D are positioned approximately parallel to each other without forming an angle, but are separated by a certain distance and sufficient attraction cannot be obtained, having the mounting surface of the support that holds the magnet M slide in the direction of the door (the mounting surface of the support does not rotate or does not rotate substantially), thereby eliminating the wedge-shaped gap between the plane of the magnet M and the opposing surface of the door D, and allowing the magnet M to be fully attracted to the door D and to hold the door D in a fully open position.

[0029] The detailed configuration will be described below in the first to fourth embodiments.

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

[0031] [Basic configuration] As shown in Figure 2A, this double door stopper 1 is a combination structure of a door stopper 10 having a buffer 13 and a door stopper 20 having a magnet M. The door stopper 10 has a buffer 13 on the upper part of a support column 12 and is configured to be screwed into an anchor bolt 11 rising from the floor surface through a screw hole (not indicated) screwed into the lower surface of the support column 12. The door stopper 20 includes a support body 21 having a mounting surface portion 21a (to the floor) and a rising surface portion 21b, which is slidably and rotatably engaged with the anchor bolt 11 and a magnet M attached to the outward-facing side of the rising surface portion 21b. Here, the door stopper 20 is described as having a support body 21 that is slidably and rotatably engaged with the anchor bolt 11, but instead, the support body 21 may be slidably or rotatably engaged with the anchor bolt 11.

[0032] The magnet M is a round, plate-shaped body. The magnet M can be 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 magnetic plate can be attached to the surface of the magnet M facing the door D as the magnetic object to be attracted.

[0033] This double door stopper 1 has a normal function in which, when the door is fully open, the door D is stopped by the buffer 13 of the door stopper 20, and then the door is closed by the door closer, by positioning the magnet M so that it does not come into contact with the single-leaf door D which is automatically closed by the door closer when entering or exiting the room under normal use (Figure 1(B)).

[0034] Furthermore, this double-type door stopper 1 has an emergency function that, in the event of emergency entry or exit such as cleaning or construction work in a room, positions the magnet M so as to contact the opposite surface of the fully open door D, thereby magnetically attracting the fully open door D and holding it in the fully open position.

[0035] [First characteristic structure] The magnet M is covered all around with a cushioning material (not indicated). The cushioning material may be a soft resin such as felt, or a soft rubber such as silicone rubber, and both are covered by the required coating technology. The magnet M may also be enclosed by a yoke (not shown), in which case the entire circumference of the magnet M and the yoke can be covered with the cushioning material.

[0036] The magnet M is connected via a horizontal axis 22 to the outward-facing side of the rising surface portion 21b of the support 21 and is swingable in the horizontal plane.

[0037] More specifically, the horizontal shaft 22 of this embodiment has a base-side shaft portion 22a and a tip-side shaft portion 22b. The base-side shaft portion 22a is fixed in a state where it protrudes horizontally from the riser surface portion 21b, with the male threaded portion at the base passing through a bolt hole drilled in the rising surface portion 21b and being double-wound with nuts 22e on the male threaded portion. The tip-side shaft portion 22b is connected to the base-side shaft portion 22a by a cotter pin 22c (which may be a pin shaft) and is capable of swiveling in the horizontal plane. The tip-side shaft portion 22b is fitted into a bolt hole drilled at the center of the surface of the magnet M (although described here as the center of the surface, it does not necessarily have to be the exact center of the surface), and a small screw 22d is firmly fastened from the opposite side of the base-side shaft portion 22a to a female thread threaded from the tip surface of the tip-side shaft portion 22b, thereby allowing the magnet M to pivot in the horizontal plane around the cotter pin 22c at the connection between the base-side shaft portion 22a, which protrudes horizontally from the rising surface portion 21b, and the tip-side shaft portion 22b as the center of rotation. The small screw 22d may also be fixed to the base-side shaft portion 22a by welding, brazing, or adhesive. Furthermore, the tip-side shaft portion 22b is not limited to the above-described configuration with the cotter pin 22c, but may also use a pin shaft or other mechanisms (which are not listed individually here) as long as they enable it to pivot in the horizontal plane relative to the base-side shaft portion 22a.

[0038] Furthermore, in addition to the fact that the magnet M can pivot in the horizontal plane with the cotter pin 22c as the center of rotation, two elastic bodies 23, which are positioned between the rising surface portion 21b and the magnet M on either side of the horizontal axis 22, pull on the magnet M in such a way that the biasing force is balanced on both sides. As a result, the base end shaft portion 22a and the tip end shaft portion 22b are positioned on a single axis, and the magnet M is held stationary with the axis center of the horizontal axis 22 coinciding with the surface center of the magnet M. Thus, the magnet M remains stationary at the center of its amplitude, and when an external force is applied to one side, it tilts horizontally towards the side to which the force is applied.

[0039] Each elastic body 23 is held in a tensile state by being hooked at both ends to the protruding ends of brackets 22f and 22g. Bracket 22f extends horizontally, integrally from the base end shaft portion 22a and in close contact with the rising surface portion 21b. Bracket 22g extends horizontally, integrally from the tip end shaft portion 22b and in close contact with the magnet M.

[0040] Therefore, the magnet M is held by the horizontal axis 22 and the two elastic bodies 23 in a state parallel to the rising surface portion 21b, spaced apart by the required dimensions, and capable of swinging at least horizontally while remaining stationary at the center of amplitude.

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

[0042] [Effect] For accurate positioning of the magnet M's attracting surface relative to the fully open door D, the magnet M should be precisely parallel to the door D when it comes into contact with it. However, inaccurate positioning often occurs, resulting in a wedge-shaped gap between the magnet M and the door D, for example, at an angle of ±5 to 10 degrees. In this case, the magnet M makes contact with the door D only on one side (Figure 1(D) or Figure 1(E)).

[0043] When the magnet M comes into contact with the fully open door D, it makes contact on one side, creating a wedge-shaped gap between the magnet M and the door D. The magnet M has a function to tilt in response to the pressure exerted by the door D on the magnet M, thereby eliminating the wedge-shaped gap and making 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)).

[0044] [Second characteristic structure] 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 an anchor bolt 11 passes through this spacer 25. As a result, the support column 12 presses the spacer 25 against the floor surface and holds it in place against the mounting surface 21a in a slidable manner without any looseness. Alternatively, one side of the elongated hole 24 in the mounting surface 21a may be cut off. In this case, when inserting the mounting surface 21a of the support 21 under an existing door stopper 10, the mounting surface 21a can be slid laterally to insert the spacer 25 into the elongated hole 24 from the cut-off side. In the configuration without the spacer 25, the mounting surface 21a is loosened by the thickness required to insert the mounting surface 21a.

[0045] Therefore, since the mounting surface 21a is not tightened and fixed by the door stopper 10, if the magnet M is rotated to be in front of the door stopper 10 when it is fully open during emergency entry or exit, and the positioning is inaccurate, resulting in a wedge-shaped gap of, for example, ±5 to 10 degrees between the magnet M and the door D, then when the magnet M contacts the door D, a wedge-shaped gap will form between the magnet M and the door D (Figure 1(D) or Figure 1(E)). In this case, the magnetic attraction of the magnet M to the door D will cause the mounting surface 21a to slide and rotate slightly toward the door, eliminating the wedge-shaped gap and thus providing a function that allows the magnet M to make 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, but are separated by a certain distance, and sufficient attraction cannot be obtained, the magnetic attraction of the magnet M to the door D may cause the mounting surface portion 21a to slide only in the direction of the door and not rotate or not rotate substantially (for example, a function realized by a configuration in which the magnet M is tightly fixed to the rising surface portion 21b (not shown)), 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 structure and the second characteristic structure] It is sufficient to have either the first characteristic configuration or the second characteristic configuration. Claim 1 includes the first characteristic configuration, Claim 2 includes the second characteristic configuration, and Claim 3 includes both the first and second characteristic configurations. In any of the following embodiments of the present invention, the description will be made as a form including both the first and second characteristic configurations, but as stated above, in order to solve the above-mentioned problems of the present invention, it is sufficient for any of the following embodiments to have at least one of the first or second characteristic configurations. As an embodiment that does not include the first characteristic configuration, the magnet can be fixed in close contact with the rising surface.

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

[0049] [Second Embodiment] Figures 3A and 3B show a double door stopper 1A according to a second embodiment of the present invention. Specifically, Figure 3A is a longitudinal front view of the double door stopper 1A, and Figure 3B is a cross-sectional view of IIIb-IIIb in Figure 3A. As shown in both figures, this double door stopper 1A has a combined structure of a door stopper 10A having a buffer 13 and a door stopper 20A having a magnet M. The door stopper 10A and the support 21A and spacer 25 of the door stopper 20A have the same configuration as in the first embodiment.

[0050] The characteristic configuration of this double door stopper 1A is as follows: A rectangular hole (not indicated) is provided in the rising surface portion 21b, and a pair of upper and lower rectangular plate-shaped horizontal guides 26 are fixed (e.g., welded) through the upper and lower edges of this rectangular hole. The horizontal shaft 22A is sandwiched between the pair of upper and lower horizontal guides 26 and is connected to the horizontal guides 26 on the side of the rising surface portion 21b by a pin shaft 27. The pin shaft 27 passes through the pin shaft through-holes of the upper horizontal guide 26 and the horizontal shaft 22A and is tightly screwed into the screw hole of the lower horizontal guide 26. The axis center at the tip of the horizontal shaft 22A coincides with the surface center of the magnet M. Also, the axis center at the base end of the horizontal shaft 22A coincides with the width center of the rising surface portion 21b.

[0051] The horizontal shaft 22A has a tip that extends beyond the protruding ends of the upper and lower horizontal guides 26, and its tip is fixedly connected to the magnet M. More specifically, the horizontal shaft 22A is fitted into a bolt hole drilled in the center of the face of the magnet M, and a small screw 22d is tightly fastened from the opposite side to a female thread threaded from the tip surface of the tip-side shaft portion 22b. In this way, the magnet M is fixed to the tip of the horizontal shaft 22A and can swing in the horizontal plane with the pin shaft 27 as the center of rotation.

[0052] Furthermore, in addition to the fact that the magnet M can swing in the horizontal plane with the pin axis 27 as its center of rotation, two elastic bodies 28, which are positioned between the rising surface portion 21b and the magnet M with the horizontal axis 22A in between, pull on the magnet M in such a way that the biasing force is balanced on both sides, thereby holding the magnet M to rest with its surface center coinciding with the axis centerline of the horizontal axis 22A. Thus, the magnet M remains at the center of its amplitude, and when an external force is applied to one side, it tilts horizontally towards the side to which the force is applied.

[0053] Each elastic body 28 is in a tensile state by hooking both ends onto the protruding ends of brackets 26a and 22g. Bracket 26a extends horizontally, extending integrally from the upper and lower horizontal guides 26. Bracket 22g extends horizontally, extending integrally from the horizontal axis 22A and in close contact with the 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 with the magnet M with respect to the rising surface portion 21b. The upper and lower horizontal guides 26 may be formed into a box shape by closing the edges in the width direction. 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 fully open door D, it makes contact on one side, creating a wedge-shaped gap between the magnet M and the door D. The magnet M has a function to tilt in response to the pressing force of the door D to eliminate the wedge-shaped gap and make 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] In this embodiment of the double door stopper 1A, similar to the first embodiment, an elongated hole 24 is provided in the mounting surface portion 21a of the support 21, an annular spacer 25 is slidably fitted into the elongated hole 24, and an anchor bolt 11 passes through this spacer 25. Therefore, this embodiment has the same second characteristic configuration as described in the first embodiment, and also has the same function (tilting function from Figure 1(D) to Figure 1(G), or tilting function from Figure 1(E) to Figure 1(I)).

[0058] [Third Embodiment] Figure 4 is a longitudinal cross-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 has a combined structure of a door stopper 10B having a buffer 13 and a door stopper 20B having a magnet M. The door stopper 10B and the support 21B and spacer 25 of the door stopper 20B have the same configuration as in the first embodiment.

[0059] The characteristic configuration of this double door stopper 1B is as follows: The tip of the horizontal shaft 22B and the magnet M are fixedly connected so that the tip of the horizontal shaft 22B and the center of the magnet M's surface coincide. The base end of the horizontal shaft 22B is passed through an axial hole drilled to coincide with the width center of the rising surface portion 21b. Furthermore, a pin hole is provided at the base end of the horizontal shaft 22B, and a cotter pin 29 is inserted through this pin hole, preventing the base end of the horizontal shaft 22B from coming out of the axial hole in the rising surface portion 21b. Note that a nut may be used instead of the cotter pin 29.

[0060] Furthermore, a spiral spring 30 is provided between the rising surface portion 21b and the magnet M, surrounding the horizontal axis 22B. The smaller diameter end of this spiral spring 30 braces against the rising surface portion 21b, and the larger diameter end braces against the magnet M. As a result, when the fully open door D is in contact with the magnet M on one side, the magnet M can swing in one direction (up, down, left, or right) according to the load, and remains stationary at the center of the amplitude when there is no load. Therefore, the magnet M is stationary with its suction surface aligned with the vertical plane, separated from one side of the rising surface portion 21b by the horizontal axis 22B and the spiral spring 30. When a load is applied from the door D, even if the opposing surfaces of the magnet M and the door D are not parallel and are in contact on one side, the magnet M will swing and make full contact.

[0061] The above characteristic configuration corresponds to the first characteristic configuration described in the first embodiment. The second characteristic configuration and function described in the first embodiment are identical for this double door stopper 1B, and therefore their description is omitted.

[0062] [Fourth Embodiment] Figures 5A and 5B show a double door stopper 1C according to a fourth embodiment of the present invention. Specifically, Figure 5A is a longitudinal front view of the double door stopper 1C, and Figure 5B is a Vb-Vb cross-sectional view in Figure 5A. As shown in both figures, this double door stopper 1C has a combined structure 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 have the same configuration as in the first embodiment.

[0063] The characteristic configuration of this double door stopper 1C is as follows: 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 each other in a plan view, and the base end of each horizontal shaft 22C is passed through an axial hole 26 drilled in the rising surface portion 21b, with a cotter pin 29 provided to prevent it from coming out of the hole. A nut may be used instead of the cotter pin 29.

[0064] Furthermore, a coil spring 31 is provided between the rising surface portion 21b and the magnet M, surrounding each horizontal axis 22C. The ends of this coil spring 31 brace against the rising surface portion 21b and the magnet M, allowing the magnet M to swing to either the left or right depending on the load when the fully open door D is in contact with one side relative to the magnet M, and remaining stationary at the center of the amplitude when unloaded. Therefore, the magnet M is stationary with its suction surface aligned with the vertical plane, separated from one side of the rising surface portion 21b by the horizontal axis 22C and the coil spring 31. When a load is applied from the door D, even if the opposing surfaces of the magnet M and the door D are not parallel and only one side is in contact, the magnet M swings to achieve full contact.

[0065] The above characteristic configuration corresponds to the first characteristic configuration described in the first embodiment. This double door stopper 1 also has the same second characteristic configuration described in the first embodiment, and therefore its description is omitted.

[0066] Furthermore, in an embodiment that includes the first characteristic configuration but does not include the second characteristic configuration, the mounting surface portion 21a of the support 21 may be provided with a round hole through which the anchor bolt 11 passes, instead of an elongated hole 24. [Industrial applicability]

[0067] Each aspect and form of the present invention provides a double door stopper that is superior in terms of safety, convenience, and the provision of appropriate service to customers, and has great potential for use in various industries, including the hotel industry, housing industry, and construction industry. [Explanation of Symbols]

[0068] 1, 1A, 1B, 1C... Double-type door stopper, D...door, W...room wall, 10...per household, 11… Anchor bolts, 12...post, 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 axis, 22d... Small screw, 22e...nut, 22f, 22g...bracket, 23...Elastic body, 24...long hole, 25...Spacer, 22A…Support shaft, 26... Horizontal guide, 26a...bracket, 27...Pin axis, 28...Elastic body, 29...cotter pin, 30... spiral spring, 31... Coil spring

Claims

1. A door stopper having a buffer at the top of the support column and screwing the screw holes of the support column into anchor bolts rising from the floor surface, A door stopper comprising a support having a mounting surface and a rising surface, a magnet attached to the outward-facing side of the rising surface, which is slidably and rotatably engaged with the anchor bolt, During normal use of the room, the magnet is positioned so as not to come into contact with the single-leaf door that is automatically closed by the door closer when fully open. This provides a normal function in which, when the door is fully open, the door is stopped by the door stopper's buffer and then the door closer can close it. In emergency situations such as cleaning or construction work, the magnet is positioned to contact the fully open door, thereby magnetically attracting the fully open door and maintaining its fully open position. The magnet is a plate-shaped body covered with a cushioning material, and is held to pivot at least horizontally and rest at the center of amplitude via a horizontal axis and elastic body connected to the rising surface, in a state substantially parallel to the outward-facing surface of the rising surface and spaced a required distance apart, so that when emergency entry or exit occurs the magnet is positioned in front of the door stopper, and when it comes into contact with the fully open door, it makes contact on one side, creating a wedge-shaped gap between the magnet and the door, and has a pivot adjustment function that tilts to eliminate the wedge-shaped gap due to the pressing force of the door, so that it makes full contact with the door. A double-type door stopper characterized by the following features.

2. A door stopper having a buffer at the top of the support column and screwing the screw holes of the support column into anchor bolts rising from the floor surface, A door stopper comprising a support having a mounting surface and a rising surface, a magnet attached to the outward-facing side of the rising surface, which is slidably and rotatably engaged with the anchor bolt, During normal use of the room, the magnet is positioned so as not to come into contact with the single-leaf door that is automatically closed by the door closer when fully open. This provides a normal function in which, when the door is fully open, the door is stopped by the door stopper's buffer and then the door closer can close it. In emergency situations such as cleaning or construction work, the magnet is positioned to contact the fully open door, thereby magnetically attracting the fully open door and maintaining its fully open position. The magnet has an elongated hole in the mounting surface of the support, through which the anchor bolt passes. In the event of emergency entry or exit, when the mounting surface is not tightened and fixed by the door stopper and the magnet is positioned in front of the fully open door stopper, if the magnet makes contact with the door and creates a wedge-shaped gap between the magnet and the door, the magnetic attraction force causes the mounting surface to slide toward the door, eliminating the wedge-shaped gap and providing a slide adjustment function that ensures full contact with the door. A double-type door stopper characterized by the following features.

3. A door stopper having a buffer at the top of the support column and screwing the screw holes of the support column into anchor bolts rising from the floor surface, A door stopper comprising a support having a mounting surface and a rising surface, a magnet attached to the outward-facing side of the rising surface, which is slidably and rotatably engaged with the anchor bolt, During normal use of the room, the magnet is positioned so as not to come into contact with the single-leaf door that is automatically closed by the door closer when fully open. This provides a normal function in which, when the door is fully open, the door is stopped by the door stopper's buffer and then the door closer can close it. In emergency situations such as cleaning or construction work, the magnet is positioned to contact the fully open door, thereby magnetically attracting the fully open door and maintaining its fully open position. The magnet is a plate-shaped body covered with a cushioning material, and is held to pivot at least horizontally and stationary at the center of amplitude via a horizontal axis and elastic body connected to the rising surface, parallel to the outward-facing surface of the rising surface and spaced a required distance apart, so that when emergency entry or exit occurs the magnet is positioned in front of the door stopper, and when it comes into contact with the fully open door, it makes contact on one side, creating a wedge-shaped gap between the magnet and the door, the pressing force of the door causes the magnet to tilt to eliminate the wedge-shaped gap and make full contact with the door, thus having a pivot adjustment function. The magnet has an elongated hole in the mounting surface of the support, through which the anchor bolt passes. This configuration allows the magnet to, when, during emergency entry or exit, the mounting surface is not secured by the door stopper and the magnet is positioned in front of the fully open door stopper, to make contact with the door, resulting in a wedge-shaped gap between the magnet and the door. In such a state, the magnetic attraction causes the mounting surface to slide and rotate slightly toward the door, eliminating the wedge-shaped gap and ensuring full contact with the door. A double-type door stopper characterized by the following features.

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

5. A double door stopper according to any one of claims 1 or 3, characterized in that the base end of the horizontal shaft is fixedly connected to the rising surface 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 the horizontal plane such that the axis center at the tip of the horizontal shaft coincides with the surface center of the magnet, and the elastic bodies provided on both sides in the horizontal direction at the tip of the horizontal shaft bias the magnet and keep the swivel of the magnet in the horizontal plane stationary at the amplitude center.

6. A double door stopper according to any one of claims 1 or 3, characterized in that the tip of the horizontal shaft and the magnet are fixedly connected such that the axis 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 rising surface such that the axis center at the base end of the horizontal shaft coincides with the width center of the rising surface, the horizontal shaft is guided by a pair of upper and lower horizontal guides provided from the rising surface and is able to swing in a horizontal plane, and the horizontal shaft is biased from both sides in the horizontal direction by the elastic body and is stationary at the amplitude center in 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 center of the magnet's surface, the base end of the horizontal shaft is passed through an axial hole drilled to coincide with the width center of the rising surface and fastened with a nut to prevent it from coming out of the hole, and the small diameter end of a spiral spring provided so that the horizontal shaft passes through the center of the spring axis is braced against the rising surface and the large diameter end of the spiral spring is braced against the magnet, so that the tip of the horizontal shaft can swing up and down and left and right in response to the load and remains stationary at the center of the amplitude when unloaded. A double door stopper according to any one of claims 1 or 3, characterized in that it is a double door stopper.

8. A double door stopper according to any one of claims 1 or 3, characterized in that the horizontal shafts are two parallel shafts in a plan view that connect the rising surface and the magnet, the base end of each horizontal shaft is passed through a shaft hole drilled in the rising surface and fastened with a nut to prevent it from coming out of the hole, and both ends of a coil spring provided so that the horizontal shaft passes through the center of the spring axis are braced against the rising surface and the magnet, so that the tip of the horizontal shaft can swing from side to side in response to a load and remains stationary at the center of the amplitude when there is no load.

9. A spacer ring slightly thicker than the mounting surface of the door stopper is provided on the lower side of 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, and the spacer ring is pressed between the floor surface by the door stopper, and when the magnet comes into contact with the door, it makes contact on one side and a wedge-shaped gap is created between the magnet and the door, the mounting surface slides toward the door and rotates slightly due to magnetic attraction, thereby eliminating the wedge-shaped gap and making full contact with the door, as described in claim 2 or 3.

10. The double door stopper according to claim 1, characterized in that the magnet is surrounded by a yoke and further covered on the outside with the resin or the soft rubber.

11. The double door stopper according to claim 1, characterized in that the magnet is one of a neodymium magnet, a ferrite magnet, a samarium cobalt magnet, or an alnico magnet.

12. The double door stopper according to claim 1, characterized in that the mounting surface portion of the door stopper is provided with an elongated hole and one side of the elongated hole is cut off.

13. The aforementioned door is made of wood. A double door stopper according to any one of claims 1 or 3, characterized in that a magnetic plate is attached to the surface of the door that comes into contact with the magnet.

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