JP2008014054A - Door stopper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door stopper preventing a door side face from being soiled or damaged by fixing the door stopper to a door and usable also to a wooden door to which a magnet is not useful. <P>SOLUTION: The door stopper is composed of a T-shaped fixing means 111 serving as a fixing means, a leg part 13 connected to the T-shaped fixing means 111 by a hinge 4, and a cylindrical non-slip part 73 mounted to the tip of the leg part 13. A floor face is supported by the leg part. The T-shaped fixing means 111 is thereby fixed to the door 100 by pushing up a door lower face part 105 from the floor face 101 with vertically upward force and simultaneously pressing a door side face 99 parallel with the floor face 101 and in a non-closing direction of the door. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door stopper that holds a door in an opened state.

2. Description of the Related Art Conventionally, a door stopper is known in which a leg is fixed to a side surface of a door using a screw or an adhesive, and the door is fixed by stretching the floor with the leg so that the door does not move in the closing direction.
However, if screws are used to fix the door stopper to the side of the door, the side of the door will be damaged. Further, when the door stopper is fixed to the side of the door with an adhesive, there is a problem that the door is soiled because the adhesive cannot be removed cleanly when the door stopper is removed by moving or the like.

  Therefore, in order to prevent the door from being scratched, Patent Document 1 discloses a door stopper for fixing a door by fixing the door to a steel or iron door by using a magnetic force of a magnet without using a screw or an adhesive and stretching the floor by a leg portion. Has been proposed.

  The prior art disclosed in Patent Document 1 will be described with reference to the three-dimensional view of FIG. In Patent Document 1, a case 52 having a magnet body 60 inside, a synthetic resin film 55, a mounting piece 61 fixed to the case 52 and having a substantially U-shaped cross section, and a swinging pin 61 on the mounting piece 61 A leg portion 57 that is freely connected and an anti-slip of the cap 51 are fixed to the end portion of the leg portion 57.

  The peripheral portion 52a of the case 52 protrudes toward the door 100 from the one surface 60a that serves as a surface that is attracted to the door of the magnet body 60. Therefore, when the magnet body 60 is magnetically attracted to the door 100, the peripheral edge 52 a of the case 52 is in contact with the door 100, and one surface 60 a of the magnet body 60 is separated from the surface of the door 100.

As a result, as compared with the case where the magnet body 60 is magnetically attracted in close contact with the door 100, a larger magnetic attracting force can be obtained by allowing more magnetic lines to pass through the surface of the door 100 at a substantially right angle. It is possible to resist the external force acting on the leg portion 57 by a large magnetic attraction force.
Furthermore, since the door stopper of patent document 1 is being fixed to the steel or iron door with the magnetic attraction force, it also has the effect that it can attach and detach easily.

Public fair 7-12590 public information

  However, although the conventional door stopper described above produces a large magnetic adsorption force, the door stopper is fixed to a steel or iron door with a magnetic adsorption force of a permanent magnet that can be attached to and detached from a steel or iron door. Thereafter, when an impact or force is applied to the door stopper, there is a problem that the position of the case 52 to which the magnet body 60 is fixed is displaced. In other words, the permanent magnet exhibits a large resistance to an external force perpendicular to the side surface of the door 100 that attempts to separate the magnet from the steel plate or iron plate, but the permanent magnet is parallel to the side surface of the door 100. The resistance is small against the external force that tries to slide.

Therefore, if the leg portion 57 is suddenly turned downward and the anti-slip of the cap 51 collides with the floor surface 101 or if a shocking force in the direction of closing the door 100 is applied, As a result, the cap 51 at the end of the leg portion 57 slips and the position of the floor surface 101 shifts, and the function of holding the door fully open cannot be performed. was there.
Further, a large magnetic attraction force is generated in the peripheral portion 52a having a narrow width, but since it is not covered with the synthetic resin film, the case 52 is made of a hard material such as steel or iron that is attracted to the magnet. If the position of the peripheral edge 52a is shifted, there is a problem that the side surface of the door 100 is damaged.

In addition, when using the door stopper fixed on the lower side of the door, it is troublesome to manually push the door stopper leg against the floor surface. The leg may be pressed against the floor. In this case, a strong force is applied in a direction parallel to the side surface of the door 100, the magnet slides in parallel to the door surface, and the peripheral edge 52a abuts against the door 100 to damage the door surface deeper. There was also.
Further, since Patent Document 1 is fixed to the door 100 by a magnetic attractive force, there is a problem that it cannot be fixed to a wooden door that does not have a magnet.

  An object of the present invention is to solve the problems of the prior art and provide a door stopper in which the door side surface is not soiled or scratched by fixing the door stopper to the door. Another object of the present invention is to provide a door stopper that can be used for a wooden door without a magnet.

  In order to achieve the above object, the door stopper according to the present invention is a door stopper that prevents the door from closing, a leg portion that projects from the side surface of the door so as not to slide, and a lower surface portion of the door and a side surface of the door. It consists of a fixing means which contacts a part.

  The door stopper according to the present invention is a door stopper that prevents the door from closing by stretching the floor surface by the leg portion that projects from the side of the door, and the leg portion that projects from the side of the door so as not to slip. And a fixing means for pressing the door lower surface portion and the door side surface portion, and a connecting portion for connecting the leg portion and the fixing means in a swingable manner.

  In the door stopper according to the present invention, it is preferable that the fixing means has an L shape or a T shape that allows the door stopper to stand on the floor surface, and a substantially U shape that can be attached to the door.

  The door stopper according to the present invention adjusts the length from the height of the fixing means that contacts the lower surface of the door to the height of the leg tip that contacts the floor surface according to the gap from the lower surface of the door to the floor surface. It is preferred that there is a length adjusting means that can.

  When the door stopper according to the present invention is not used, it is preferable that there is a leg holding means capable of holding the leg so as not to contact the floor surface.

  In the door stopper according to the present invention, it is preferable that the adhesive tape for joining the fixing means to the door is disposed on a surface where the door lower surface portion and the fixing means come into contact.

In the door stopper according to the present invention, it is preferable that a protective member thicker than the protruding height of the screw is formed around the screw attached to the surface where the fixing means contacts the door.

  As for the door stopper which concerns on this invention, it is preferable that the handle part is comprised in the fixing means.

  In the door stopper according to the present invention, when a force of a certain range or more is applied to the leg portion, the contact portion of the safety means contacts the floor surface in addition to the anti-slip portion in contact with the floor surface side of the leg portion. It is preferable to reduce the frictional force caused by the stopper.

  The shape of the contact portion of the door stopper according to the present invention is preferably a rotating roller shape or a ball shape, a hemispherical shape made of a material having a lower friction coefficient than the anti-slip portion, or a curved surface shape.

  With at least one of the above-described configurations, the door stopper according to the present invention has an effect that the side surface of the door is not soiled or scratched by fixing the door stopper to the door. Further, the door stopper according to the present invention has an effect that it can be used for a wooden door without a magnet.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following, it will be described as a door stopper used for a door of a door or a hotel room door with a door closer that moves slowly in the closing direction of the door, but a door without a door closer or a wooden door in the room It may be. Further, the present invention is not limited to these drawings. Furthermore, the same reference numerals are used for portions having the same names in different drawings.

FIG. 1 is a three-dimensional view of a door stopper using an L-shaped fixing means according to Embodiment 1 of the present invention. The L-shaped fixing means 44 and L-shaped fixing means 44, which are in contact with the door lower surface portion and the door side surface portion, serve as a fixing means, have a door stopper standing on the floor surface 101, and further have a protruding portion 2 protruding partially. It is composed of a non-slip part 3 that is attached to the end of the protruding part 2 on the floor surface side to prevent slipping. To do.
Further, the door stopper of the first embodiment is composed of two parts, the L-shaped fixing means 44 and the anti-slip part 3, but the door stopper may be composed of one part in order to reduce the number of parts and reduce the cost. good.

FIG. 2 is a three-dimensional view of a door stopper in which the length of the leg portion 12 can be adjusted by using an L-shaped fixing means that is a first modification of the first embodiment of the present invention.
L-shaped fixing means 1 serving as a fixing means, a fixing base 10 for facilitating fixing of the hinge 4 to the L-shaped fixing means 1, two screws 18 for fixing the L-shaped fixing means 1, the fixing base 10 and the hinge 4, and a leg 12 A hinge 4 that can be rotated in the vertical direction, a leg fixing portion 6 that fixes the hinge 4 and the long screw 22 with two nuts 5, and a cylindrical anti-slip portion 63 is fixed to the floor surface side of the long screw 22. It is configured. The leg portion 12 includes two nuts 5, a long screw 22, and a cylindrical anti-slip portion 63. By changing the mounting position of the nut 5 fixed to the long screw 22, the leg anti-slip portion is changed from the leg fixing portion 6. Since the length to the portion 63 can be changed, the length of the leg portion 12 can be changed according to the gap from the lower surface of the door using the door stopper to the floor surface. There is an effect that the floor surface can be adjusted to a length that is easy to stretch.

FIG. 3 is a three-dimensional view of a door stopper using a L-shaped fixing means 1 which is a second modification of the first embodiment of the present invention, the length of the leg 13 can be adjusted, and a safety means is provided.
L-shaped fixing means 1 serving as a fixing means, a fixing base 10 for facilitating fixing of the hinge 4 to the L-shaped fixing means 1, two screws 18 for fixing the L-shaped fixing means 1, the fixing base 10 and the hinge 4, and leg portions 13 Hinge 4, hinge 4 and long screw 22 are fixed by two nuts 5, one nut 5 and washer 7 hold down one end of compression spring 8, compression spring 8 The other end is pressed by a cylindrical non-slip portion 73 that is movably attached in parallel to the long screw 22.

  Next, FIG. 4 is a third modification of the first embodiment. The difference from the third embodiment is a door stopper that is different from the third embodiment in that the handle 9 is attached and the fixing means uses a T-shaped fixing means 111. . 3 is similar to Modification 2 of FIG. 3. Therefore, if a different function of Modification 3 is described with respect to Modification 2, Modification 3 attaches a handle 9, so that there is a gap between the door lower surface and the floor surface. When inserting the door stopper into the door, it was inserted by bending, but with the handle 9, the door stopper can be easily inserted into the gap between the lower surface of the door and the floor surface without standing. There is an effect.

However, attaching the handle 9 raises the position of the center of gravity, and the L-shaped fixing means 1 has a problem that it tends to fall in the direction of the leg 13 side. Therefore, by expanding the area of the bottom surface portion of the fixing means on the leg portion 13 side, the door stopper is less likely to fall down, and can stably stand on the floor surface 101. Thus, by using the T-shaped fixing means 111 as the fixing means, there is an effect that even if the handle 9 is attached to the door stopper, it can be stably placed on the floor surface.
Here, the state at the time of use in the door stopper of Example 1 and the modification 1 to the modification 3 is demonstrated. Since the door stoppers of the first embodiment, the first modification, the second modification, and the third modification have the same direction of the door stopper that is fixed to the door 100, the state in use will be described using the third modification. 5, 6, and 7 are views illustrating a usage state as viewed from the side of the door stopper when the door 100 is fixed.

First, FIG. 5 will be described. The door 100 has a door closer (not shown) attached to the upper portion of the door, and is operated in a direction in which the door is slowly closed by a force A for closing the door by the door closer so that the door is not suddenly closed. Here, the door stopper according to the third modification is disposed with the legs 13 facing in the direction in which the door is closed. The cylindrical slip stopper 73 contacts the floor surface 101 by gravity. It arrange | positions so that the door lower surface contact part 112 on the opposite side to the leg part 13 may enter into the clearance gap L1 from the floor surface 101 to the lower surface part 105 of the door 100 in the bottom face part of the T-shaped fixing means 111.
Thereafter, in FIG. 6, the door side surface 99 in the direction in which the door 100 is closed comes into contact with the door side surface pressing portion 113 of the T-shaped fixing means 111 by the force A for closing the door by the door closer.

  In FIG. 7, the side pressing portion 113, which is a portion where the door stopper presses the door side 99, is further pressed in the direction in which the door is closed by the force A for closing the door. However, by the frictional force B that keeps the cylindrical anti-slip portion 73 that is in contact with the floor surface 101 from slipping, the door closing force is stopped by suppressing the door closing force A. At that time, a downward force C perpendicular to the floor surface 101 acts, and an upward force D perpendicular to the floor surface 101 pushes up the T-shaped fixing means 111. The T-shaped fixing means 111 contacts the lower surface portion 105 of the door 100 and further pushes up the door lower surface portion 105. Thus, the force that holds the cylindrical anti-slip part 73 so as not to slide pushes up the lower surface part 105 by the T-shaped fixing means 111 and further presses the door side surface 99 in a direction not closing the door. The T-shaped fixing means 111 is fixed to the door by the force in these two directions.

That is, the door stoppers of the first embodiment and the first to third modifications can be fixed to the door 100 by utilizing the reaction of the force that keeps the cylindrical anti-slip portion 73 from slipping.
Therefore, since an adhesive or a screw is not used, there is an effect that the side surface of the door is not damaged. Furthermore, unlike the door stopper that is fixed to the side of the door by the magnet's adsorption force of Patent Document 1, there is also an effect that it can be used even with a wooden door that does not have a magnet.

  Next, FIG. 8 is a view showing a case where the gap L2 from the floor surface 101 to the door lower surface portion 105 is wider than the gap L1 shown in FIG. 7, and the length of the leg portion 13 is adjusted by the length adjusting means. It is the side view made long. Thus, the gap from the floor surface 101 to the door lower surface portion 105 differs depending on the door. For example, when the gap from the floor surface 101 to the door lower surface portion 105 is wide and the leg portion 13 is short, the leg portion 13 does not contact the floor surface 101, so that the floor surface 101 cannot be stretched. Further, when the gap is narrow and the leg portion 13 is too long, the contact angle θ1 of the leg portion 13 with respect to the floor surface 101 is reduced, so that the downward force C in the vertical direction is also reduced, and the frictional force B that is held so as not to slip. However, there is a problem of slipping.

  Therefore, the gap L2 in FIG. 8 is wider than the gap L1 in FIG. 7. Therefore, the positions of the two nuts 5 above and below the leg fixing part 6 for fixing the leg part 13 in FIG. FIG. 8 is an enlarged view. By adjusting the length of the legs in this way, there is a length adjusting means that can adjust the length of the legs so that it can cope with doors having different gaps from the floor surface 101 to the door lower surface 105.

Here, when the range of the contact angle θ1 of the leg 13 with respect to the floor surface 101 was tested with the entrance door of the apartment, the contact angle θ1 is preferably an angle range of 50 to 80 degrees, and in this range, the cylindrical anti-slip portion 73 is used. The power to hold without slipping was strong.
When the contact angle θ1 is in the range of 81 degrees to 90 degrees, the gap L2 from the floor surface 101 to the door lower surface portion 105 varies within the opening / closing range of the entrance door of the apartment, and there are places where the leg portion 13 does not contact the floor surface 101. The door 100 could not be held stably.

This is due to the fact that the floor surface 101 is not uniform in height because the floor surface 101 is raised in the vicinity of the entrance so that rainwater does not flow into the entrance outside the apartment entrance.
If the gap from the floor surface 101 to the door lower surface portion 105 is uniform within the door opening / closing range, it is considered that the range of the contact angle θ1 is widened and the door 100 can be stably held.

The following FIGS. 9 to 14 describe the safety means.
Here, the necessity of the safety means of a door stopper is demonstrated. For example, when a hotel door is opened by cleaning a hotel room, the door of the hotel has a door closer for safety, so if the door stopper is not attached, the opened door will automatically close. Furthermore, since the hotel is auto-locking, the door will be locked automatically once it is closed, and the door cannot be opened without the key. In particular, cleaning the guest room often goes back and forth between the room and the corridor, such as changing sheets and clothing, so it is difficult to clean the door when the door closes automatically and the key is automatically locked. The door is fixed using a wedge-shaped door stopper in the gap to the lower surface of the door.

However, since the hotel must be cleaned within a limited time, it may accidentally rush and push the door in the direction of closing with the wedge-shaped door stopper. As described above, there is a problem that if a certain force is applied in the closing direction of the door, the door hinge is deformed and the door is broken.
Further, since cleaning is performed on a daily basis, there is a problem that a wedge-shaped door stopper slightly imposes a burden on the door hinge and increases the backlash of the door.
Therefore, when a certain level of force is applied to the door stopper, a door stopper with safety means that operates in a direction to close the door by reducing the stopping force is required.

FIGS. 9 and 10 are explanatory views of the safety means. FIGS. 9 and 10 are cross-sectional views of the safety means made of a material having a small friction coefficient, FIG. 11 is a cross-sectional view of the safety means having a rotating part of the sphere, and FIGS. This will be described with reference to a diagram of safety means with a section.
First, FIG. 9 is a state diagram when a force within a certain level is applied to the door stopper, and shows a cross section of the cylindrical slip preventing portion 73 of the leg portion 13. The cylindrical anti-skid part 73 made of an elastic material having a high friction coefficient, the floor contact surface side of the cylindrical anti-slip part 73 has a large inner diameter of φ12 mm, and the compression spring 8 side of the cylindrical anti-slip part 73 has an inner diameter of φ6 mm. The aluminum pipe 15 is inserted, and a clearance is secured so that the long screw 22 having a diameter of 5 mm can slide in the aluminum pipe 15. A sliding cap 14 is fixed to the end of the long screw 22 on the floor contact surface side. The material of the sliding cap 14 is made of hard polyethylene having a lower coefficient of friction than the cylindrical anti-slip portion 73. The material of the sliding cap 14 is preferably a hard polyethylene having a friction coefficient μ of 0.08 to 0.18, and may be an ultra-high molecular polyethylene or polyacetal, and the friction coefficient is preferably 0.2 or less.

Next, the function will be described. Since the compression spring 8 applies a force to extend in the direction of the spring force Z, the cylindrical slip stopper 73 is pressed by the force of the spring force Z, but the outer shape of the slide cap 14 is greater than that of the aluminum pipe 15 having an inner diameter of φ6 mm. Since it is large, the cylindrical anti-slip portion 73 is sandwiched between the sliding cap 14 and the compression spring 8 with a constant spring force.
The door 100 is stopped by a downward force F perpendicular to the floor surface 101 and a frictional force G that keeps the door 100 from closing. In this state, since only the cylindrical anti-slip portion 73 is in contact with the floor surface 101, the frictional force G that holds the door 100 so as not to close is generated only in the cylindrical anti-slip portion 73.

FIG. 10 is a state diagram when a certain force or more is applied to the door stopper. When a force exceeding a certain level is applied to the compression spring 8, the spring contracts and the cylindrical anti-slip portion 73 slides in the direction of the compression spring 8, and the sliding cap 14 serving as a contact portion of the safety means also contacts the floor surface 101. .
Since the material of the slip cap 14 has a smaller coefficient of friction than the material of the cylindrical slip stopper 73, the friction force J acting on the downward force I in the vertical direction pressed by the slip cap 14 is greater than the friction force H acting on the tubular slip stopper 73. small.
Furthermore, since the sliding cap 14 contacts the floor surface 101 and a vertical downward force is applied, the vertical downward force E applied to the cylindrical anti-slip portion 73 does not increase, so the frictional force H does not increase. Therefore, the door cannot be held only by the frictional force J and the frictional force H that are held so that the door 100 is not closed, and the door stopper starts to slide in the direction in which the door is closed. The cylindrical anti-slip portion 73 changes from a static friction coefficient to a dynamic friction coefficient. Since the dynamic friction coefficient is smaller than the static friction coefficient, it becomes easier to slip once it starts to slide. Thus, when a force exceeding a certain level is applied to the door, the door stopper cannot hold the door by the safety means, and the door starts to slide, so that it is possible to prevent the door hinge from being broken and the door from becoming loose.

Moreover, since the end surface of the compression spring 8 is fixed by the washer 7 and the nut 5,
Since the compression force of the compression spring 8 can be adjusted by changing the position of the nut 5, there is also an effect that the force at which the safety means operates can be adjusted.
FIG. 11 shows a modified example of the safety means, which is a ball mounting portion 17 attached to the end of the long screw 22 and a rotating ball 16 serving as a contact portion of the safety means, and can be rotated to the tip instead of the sliding cap 14. A mechanism with a simple ball may be used.

Still another safety means will be described with reference to FIGS. FIG. 12 is a state diagram when a force within a certain level is applied to the door stopper, and is a partial side view of the plate-like leg 23 on the side in contact with the floor surface 101. FIG. 13 is a rear view seen from the direction of arrow K in FIG. A plurality of adjustment holes 85 are formed in the plate-like leg 23 with screws 18 and nuts 19 for attaching the plate-like anti-skid 20 to the plate-like leg 23, the rotary roller 21 formed at the tip of the plate-like leg 23, and the plate-like leg 23. The mounting position of the plate-like anti-slip 20 can be changed.
Next, the function will be described. In FIG. 12, a downward force M perpendicular to the floor surface 101 and a frictional force N that keeps the door 100 from closing are applied.

  Here, the elastic material of the plate-like anti-slip 20 is preferably a polyurethane material having a friction coefficient μ of 0.4 to 0.8, and may be silicon rubber or synthetic rubber, and a material having a friction coefficient of 0.3 or more. Is good. Since an elastic body such as a polyurethane material is elastically deformed in the direction in which a force is applied, when a downward force M in the vertical direction is applied to the plate-like anti-skid 20, it is also elastically deformed in the vertical direction. FIG. Because of the added state diagram, the door 100 is stopped by a frictional force N that holds only the plate-like anti-slip 20 so as not to contact the floor surface 101 and close the door 100.

Next, FIG. 14 is a state diagram when a certain force or more is applied to the door stopper. A certain force or more is applied to the plate-shaped anti-slip 20 and elastically deforms, so that the rotating roller 21 serving as a contact portion of the safety means also contacts the floor surface 101.
Since the rotating roller 21 rotates and moves, the frictional force R becomes small, and the frictional force R acting on the vertical downward force P pressed by the rotating roller 21 is smaller than the frictional force Q acting on the plate-like anti-slip 20.
Further, since the rotating roller 21 comes into contact with the floor surface 101 and a vertical downward force is applied, the vertical downward force O applied to the plate-like anti-slip 20 does not increase, and therefore the frictional force Q does not increase. Therefore, the door cannot be held only by the frictional force R and the frictional force Q that are held so that the door 100 is not closed, and the door stopper starts to slide in the direction in which the door is closed. The plate-like anti-slip 20 changes from a static friction coefficient to a dynamic friction coefficient. Since the dynamic friction coefficient is smaller than the static friction coefficient, it becomes easier to slip once it starts to slide. Thus, when a force exceeding a certain level is applied to the door, the door stopper cannot hold the door by the safety means, and the door starts to slide, so that it is possible to prevent the door hinge from being broken and the door from becoming loose.

Moreover, the safety means using the elastic deformation of the plate-like anti-slip 20 has an effect of being inexpensive because it does not require a compression spring. Furthermore, without using the roller 21 attached to the plate-like leg 23, the floor side of the plate-like leg 23 may be chamfered to make it slippery, or a slippery tape may be attached. Further, the material of the plate-like leg 23 is preferably a material having a lower friction coefficient than that of the plate-like anti-skid 20, is preferably hard polyethylene having a friction coefficient μ of 0.18 to 0.08, is also good for ultra-high molecular polyethylene, and polyacetal. The coefficient is preferably 0.2 or less.
The plate-like leg 23 has a plurality of adjustment holes 85 so that the mounting position of the plate-like slip stopper 20 can be changed. This is an adjustment hole 85 for adjusting the force at which the safety means operates, and determines the mounting position according to the deformation of the plate-like anti-slip 20. Here, in FIG. 13, the adjustment hole 85 is a round hole, but it may be a long hole so that fine adjustment is possible.

  15 to 21 show a door stopper using a substantially U-shaped fixing means according to the second embodiment of the present invention. FIG. 15 is a side view using the substantially U-shaped fixing means of the second embodiment, FIG. 16 is a front view of the substantially U-shaped fixing mechanism of the second embodiment, and FIGS. FIG. 19 is a diagram for explaining the operation of the leg holding means. FIG. 19 shows the position of the adjusting plate 37 attached to the floor 101 by the length adjusting means with respect to the door of the gap L4 which is wider than the gap L3 of FIG. The attached side view, FIG. 20 is an explanatory view of the mounting arrangement of the protective member and the adhesive tape that are thicker than the protruding height of the screw in the substantially U-shaped fixing means, and FIG. It is sectional drawing of a character-shaped fixing means.

  FIG. 15 shows a substantially U-shaped fixing means 30, a screw 18, a protective member 35 thicker than the protruding height of the screw 18 for protecting the screw 18 from damaging the door 100, a nut 19, and a length adjusting means. The adjustment plate 37 and the leg portion 80 of the fixing means are composed of a plate-like non-slip portion 33, a leg magnet 32, a leg plate 31, and a hinge 34 serving as a connecting portion. Further, a leg fixing portion 36 for fixing the hinge 34 and the adjusting plate 37, a metal fitting press 38, a holding release metal fitting 39, a door side surface 99 in the direction in which the door is closed, a floor surface 101, a door lower surface portion 105, and a portion where the door stopper pushes the door side surface. The door side pressing portion 123, the adjusting plate magnet 132, the upward force Y in the vertical direction with respect to the floor surface 101, the force S for closing the door by a door closer, the friction force T for keeping the door from closing, the floor surface 101 The vertical downward force V and the leg holding direction N1.

  Next, the method of use will be described. First, the fixing means of the second embodiment shown in the side view of FIG. 15 and the front view of FIG. 16 takes out the substantially U-shaped door stopper. Next, the substantially U-shaped fixing means 30 is attached to the door lower surface portion 105 of the door 100. Since the substantially U-shaped fixing means 30 has an elastic force, it can be attached to the door 100 because the thickness of the door 100 is pressed and held. The leg portion 80 rotates in the vertical direction around the hinge 34, and the plate-like anti-slip portion 33 rotates downward due to gravity to contact the floor surface 101. The door 100 tries to move in the direction of the force S for closing the door by a door closer (not shown), but the movement of the door 100 is stopped by the frictional force T of the plate-like anti-slip portion 33.

  Further, a vertical downward force V acts on the plate-shaped anti-slip portion 33. The vertical upward force Y, which is the reaction of the vertical downward force V, is applied to the substantially U-shaped fixing means 30 and the door lower surface portion 105. Since the door 100 is fixed by a door hinge and a door frame (not shown), the substantially U-shaped fixing means 30 is fixed at the position of the door gap L3. Further, the frictional force T causes the door side pressing portion 123 of the substantially U-shaped fixing means 30 to press the door side 99 in the direction in which the door is to be closed, so that it is also fixed in the door side direction. In the case of FIG. 15, the door side pressing portion 123 is the surface of the door side protection member 35 in which the door stopper is in contact with the door side surface 99.

  Here, since the substantially U-shaped fixing means 30 has an elastic force, the door 100 is pressed so as to sandwich the thickness of the door 100. When the door is held by a door stopper other than the pressing force, the door lower surface portion 105 is pressed. The substantially U-shaped fixing means 30 is more firmly fixed to the door 100 by a force in the upward direction perpendicular to the floor surface that pushes up and a force that presses the door side surface 99 that works in a direction that does not close the door horizontally with respect to the floor surface. Is done.

  The force for fixing the door stopper that works when holding the door is, for example, the door stopper even if the substantially U-shaped fixing means 30 is displaced downward due to the influence of vibration and gravity when the door is opened and closed. By using this, the upward force Y in the vertical direction works and the substantially U-shaped fixing means 30 is pushed into the door 100 and can return to the original position. There is an effect that it becomes difficult to come off.

Next, the leg holding means will be described with reference to FIGS.
When the door stopper is not used, the leg portion 80 is fixed as shown in FIG. 17 by moving the leg portion 80 in the leg portion holding direction N1 and attracting the leg magnet 32 to the adjusting plate magnet 132 by the magnetic attraction force. Here, a magnet is used to hold the leg portion 30, but the leg portion holding means may use a latch that forms concave and convex portions and is held by a spring or the like.

  In addition, when using a door stopper as shown in FIG. 18, the leg magnet 32 can be pulled away from the adjusting plate magnet 132 by the force N2 for pushing the holding release metal fitting 39 horizontally with respect to the floor surface 101, and due to gravity. The leg portion 80 rotates in the N3 direction, the plate-like anti-slip portion 33 comes into contact with the floor surface 101, and the door stopper can be used easily. Since it only pushes in the horizontal direction, it is easier not to bend and push with your hand, but you can also use your foot to push it while standing. Further, since the pushing force N2 is pushed in the horizontal direction, there is no fear that the substantially U-shaped fixing means 30 is detached from the door 100.

  FIG. 19 is a side view in which the attachment position of the leg portion 80 is moved toward the floor 101 by the length adjusting means with respect to the door of the gap L4 that is wider than the gap L3 of FIG. At the same time, the position of the leg length adjusting hole 40 is determined and fixed by the screw 18 and the nut 19. From the experiment, in the case of the entrance door as in the door stopper of Example 1, the contact angle θ2 was a preferable angle in the range of 50 to 80 degrees.

  FIG. 20 is an explanatory view of the mounting arrangement of the adhesive tape with a substantially U-shaped fixing means. Here, the thickness of the door 100 is pressed by the elastic force of the substantially U-shaped fixing means 30, but when the door stopper is weak and the door stopper is easily detached from the door 100, the substantially U-shaped fixing means 30. Adhesive tape is used on the surface where the door lower surface 105 contacts. In FIG. 20, the substantially U-shaped fixing means 30 and the door lower surface portion 105 are fixed using a double-sided tape 41. Even if the door stopper is removed due to moving or the like, since the remaining residue of the double-sided tape 41 is attached only to the door lower surface portion 105, the remaining residue of the double-sided tape 41 is difficult to see even from the outside, so the side surface of the door can be kept clean. Previously, the door side was fixed using adhesive or screws, so there was a problem that the side of the door was scratched or the adhesive marks were difficult to remove. By setting it to 105, there is an effect that the side of the door can be kept clean.

Further, FIG. 20 is also an explanatory view of the mounting arrangement of the protective member thicker than the protruding height of the screw by the substantially U-shaped fixing means, and this content will also be described.
The surface with which the door 100 comes into contact with the substantially U-shaped fixing means needs to prevent the door from being damaged. Further, since a pressing force is applied to the door lower surface portion 105 and the door side surface 99 by the fixing means, if there is a hard convex portion on this surface, the door is damaged. Therefore, by arranging a protective member thicker than the protruding height of the screw in the vicinity of the screw, the door 100 does not directly contact the hard convex portion of the screw, so that the door is not damaged. Of course, the same applies to nuts and the like which are convex portions other than screws.

Here, FIG. 20 illustrates the thickness of the protective member and the mounting arrangement of the substantially U-shaped fixing means, but the same applies to the L-shaped and T-shaped fixing means.
Moreover, you may comprise a protection member in all the surfaces which a door contacts. Needless to say, a hard convex portion may not be formed on the surface of the fixing means with which the door 100 contacts.
FIG. 21 is a cross-sectional view of a substantially U-shaped fixing means that is attached according to the thickness of the door. The substantially U-shaped fixing means includes a movement retainer 49 having a through hole into which the screw 18 is inserted and the screw 18 is inserted. A fixing press 48 having an elliptical through hole so that the screw can be moved within the adjustment range W, a screw 18, a nut 19, a protection member 47 for preventing scratches, and a protection member 50 thicker than the protruding height of the screw. Has been. Since the distance between the fixed presser 48 and the movable presser 49 is matched with the thickness X of the door 100 and is fixed with screws 18 and nuts 19, even if the thickness X changes depending on the type of door, the adjustment range W is maintained. There is an effect that the thickness can be adjusted.

Three-dimensional view of the door stopper of Example 1 of the present invention Three-dimensional view of a door stopper which is a first modification of the first embodiment of the present invention Three-dimensional view of a door stopper which is a second modification of the first embodiment of the present invention Three-dimensional view of a door stopper which is a third modification of the first embodiment of the present invention State figure before fixation seen from the side of the door stopper of the present invention State diagram of the door stopper of the present invention during fixing The state figure after fixation seen from the side of the door stopper of the present invention The side view which lengthened the length of the leg part of the door stopper of Example 1. Cross section of safety means made of material with low coefficient of friction Sectional view when a safety device made of a material with a low coefficient of friction is activated Cross section of safety means consisting of rotating balls Side view of safety means with plate-like legs Rear view of safety means with plate-like legs Side view when the safety means by the plate-like leg is operated Side view of the door stopper according to the second embodiment of the present invention. The front view of the door stopper of Example 2 of this invention Side view when the leg magnet of the leg holding means is attracted to the adjustment plate magnet Side view when the leg magnet is pulled away from the adjusting plate magnet of the leg holding means The side view which attached the attachment position of the adjustment plate of the door stopper of Example 2 to the floor direction Side view of mounting arrangement of protective member and adhesive tape of Example 2 Sectional view of a substantially U-shaped fixing means attached according to the thickness of the door Three-dimensional view of a conventional door stopper Case cross-sectional view of a conventional door stopper

Explanation of symbols

1L-shaped fixing means, 11, 12, 13, 80 legs, 3 anti-slip parts, 4,34 hinges, 6, 36 leg fixing parts, 8 compression springs, 9 handles, 10 fixing bases, 14 sliding caps, 18 screws, 19 nuts, 22 long screws, 33 plate-shaped non-slip parts, 32 leg magnets, 38 metal fittings, 39 holding release metal fittings, leg length adjustment holes 40, 47 scratch prevention protection members, 50 protection members, 63 columnar anti-skids Part, 73 cylindrical anti-slip part, 99 door side face, 100 door, 101 floor surface, door lower face part 105, 111 T-shaped fixing means, 132 adjustment plate magnet, A, S door closing force, L1, L2, L3, L4 Clearance, C, V vertical downward force, D, Y vertical upward force

Claims (10)

A door stopper for preventing a door from closing, comprising: a leg portion that projects from the side surface of the door so as not to slip; and a fixing means that contacts the lower surface of the door and the side surface of the door. . In the door stopper that prevents the door from closing by stretching the floor surface with the legs projecting from the side of the door, the legs projecting from the side of the door so as not to slide, the lower surface of the door, and the side of the door A door stopper, comprising: a fixing means for pressing the part; and a connecting part for swingably connecting the leg part and the fixing means. The door stopper according to claim 1 or 2, wherein the fixing means has an L shape or a T shape that allows the door stopper to stand on the floor surface, and a substantially U shape that can be attached to the door. A door stopper characterized by that. The door stopper according to any one of claims 1 to 3, wherein the leg contacts the floor surface from the height of the fixing means that contacts the lower surface of the door according to the gap from the lower surface of the door to the floor surface. A door stopper characterized by having a length adjusting means capable of adjusting a length up to the height of the tip of the section. The door stopper according to any one of claims 1 to 4, wherein when the door stopper is not used, there is a leg holding means that can hold the leg so as not to contact the floor surface. And door stopper. The door stopper according to any one of claims 1 to 5, wherein the adhesive tape for joining the fixing means to the door is disposed on a surface where the door lower surface and the fixing means are in contact with each other. Door stopper. The door stopper according to any one of claims 1 to 6, wherein a protective member thicker than a protruding height of the screw is formed around a screw attached to a surface where the fixing means contacts the door. A door stopper characterized by. The door stopper according to any one of claims 1 to 7, wherein a handle portion is formed on the fixing means. The door stopper according to any one of claims 1 to 8, wherein a safety means is provided in addition to the non-slip portion that is in contact with the floor surface of the leg when a force exceeding a certain range is applied to the leg. The door stopper is in contact with the floor surface and reduces the frictional force caused by the slip stopper. 10. The door stopper according to claim 9, wherein the shape of the contact portion is a rotating roller shape or a ball shape, a hemispherical shape made of a material having a lower coefficient of friction than the anti-slip portion, or a curved surface shape. Door stopper.

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