Rotation regulator for door

Abstract

To provide a rotation regulator for a door capable of being unitized.SOLUTION: A door rotation regulator 1 includes an arm 6 rotatably connected to a bracket 5 attached to one of a door and a main body, a case 4 attached to the other of the door and the main body, a slider 10 movably housed in the case 4 and to which the arm 6 is rotatably connected, and a stopper 13 fixed to the case 4 and regulating movement of the slider 10.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a door rotation restrictor for stopping a door at a predetermined opening angle. [Background technology]

[0002] A known door rotation restricting device for stopping a door at a predetermined opening angle is one that has a door stop on the floor that stops the door by hitting it, a ring on the door stop that is attached to a hook on the door.

[0003] In addition to this, there is also a known system in which a magnet is provided on the door side and a magnetic stopper piece is provided on the floor side of the door stopper so that when the door opens to a predetermined angle, the magnet attracts the stopper piece, preventing the door from opening any further (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-147972 Summary of the Invention [Problem to be solved by the invention]

[0005] However, conventional door rotation restricting devices have a problem in that the door-side component and the floor-side door stop are separate components, and the positions of the door-side component and the floor-side door stop must be adjusted while the door is open.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to provide a door rotation restricting device that can be unitized. [Means for solving the problem]

[0007] In order to solve the above problems, one aspect of the present invention is a door rotation control device comprising an arm rotatably connected to a bracket attached to one of the door or the main body, a case attached to the other of the door or the main body, a slider slidably housed in the case and to which the arm is rotatably connected, and a stopper fixed to the case and which controls the movement of the slider.

[0008] Another aspect of the present invention is an attachment structure for a door rotation control device, comprising the door, the main body, a hinge for opening and closing the door, and the door rotation control device, wherein, when the door is in a closed position, the center of rotation of the door determined by the hinge is located between the bracket and the slider of the door rotation control device. [Effects of the Invention]

[0009] According to one aspect of the present invention, the door rotation restricting device can be made into a unit.

[0010] According to another aspect of the present invention, the center of rotation of the door determined by the hinge is positioned between the bracket and slider of the door rotation control device, so that the stroke of the slider relative to the case of the door rotation control device can be reduced, and the door rotation control device can be made smaller. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view of a mechanical device to which a door rotation restricting device according to an embodiment of the present invention is attached (with the door closed); [Figure 2] FIG. 1 is a perspective view of the machine device (with the door open). [Figure 3] 3A and 3B are perspective views of a door rotation restricting device with a cover attached (FIG. 3A shows the door in a closed state, and FIG. 3B shows the door in an open state). [Figure 4] 4A and 4B are perspective views of a door rotation restricting device with the cover removed (FIG. 4A shows the door in a closed state, and FIG. 4B shows the door in an open state). [Figure 5] FIG. 2 is an exploded perspective view of the door rotation restricting device. [Figure 6] FIG. 2 is a cross-sectional view of a door rotation restricting device. [Figure 7] 10 is a cross-sectional view showing the movement of the door rotation restricting device when the door is opened. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a door rotation restricting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the door rotation restricting device of the present invention can be embodied in various forms and is not limited to the embodiments described herein. The present embodiment is provided with the intention of enabling those skilled in the art to fully understand the invention by fully disclosing the specification.

[0013] As shown in Figures 1 and 2, the door rotation restricting device 1 according to this embodiment is attached to a main body 2 and a door 3 of furniture, fittings, mechanical equipment, etc., and stops the door 3 at a predetermined opening angle, for example, 90°. Figures 1 and 2 show an example in which the main body 2 is the housing of a mechanical device, but the main body 2 may also be the housing of furniture or the frame of a fitting. Furthermore, the door 3 may rotate around a horizontal axis or a vertical axis.

[0014] The door rotation restricting device 1 is attached to the hanging side of the door 3, and comprises a case 4 attached to the outer surface 2a of the main body 2, a bracket 5 attached to the outer surface 3a of the door 3, and an arm 6 rotatably connected to the bracket 5 and a slider inside the case 4. When the door 3 is in the closed position, the outer surface 2a of the main body 2 and the outer surface 3a of the door 3 are substantially on the same plane or substantially parallel. Alternatively, the bracket 5 may be attached to the outer surface 2a of the main body 2, and the case 4 may be attached to the outer surface 3a of the door 3.

[0015] A hinge 7 for opening and closing the door 3 is attached to the outer surface 2a of the main body 2 and the outer surface 3a of the door 3. The center of rotation (also called the instantaneous center) C of the door 3 is determined by the hinge 7. The hinge 7 is, for example, a single-axis hinge, and includes a first piece 7a attached to the main body 2 and a second piece 7b attached to the door 3. The hinge 7 may also be a so-called slide hinge, in which the center of rotation slides. To facilitate the opening operation of the door 3, the hinge 7 may be provided with an assist function, i.e., a spring that biases the door 3 in the opening direction when it is closed.

[0016] Figures 3(a) and 3(b) show the door rotation restricting device 1 with the cover attached, and Figures 4(a) and 4(b) show the door rotation restricting device 1 with the cover removed. Reference numeral 8 denotes the case cover, reference numeral 9 denotes the bracket cover, reference numeral 4 denotes the case, reference numeral 5 denotes the bracket, and reference numeral 6 denotes the arm. The case cover 8 is formed with a relief groove 8a to avoid interference with the arm 6.

[0017] As shown in Figures 4(a) and 4(b), the bracket 5 rotates together with the door 3 around the rotation center C of the door 3. As the bracket 5 rotates, the arm 6 rotates around the first axis 11 relative to the case 4, and the slider 10 slides toward the back of the case 4. When the slider 10 abuts against a stopper fixed to the case 4, the rotation of the arm 6 is stopped and the door 3 is stopped at a predetermined opening angle.

[0018] The case 4 is attached to the main body 2 so that its position can be adjusted. The case 4 is formed with an elongated hole 4a1 extending in a direction perpendicular to the rotation center C of the door 3. The case 4 is fastened to the main body 2 by a fastening member such as a screw that passes through the elongated hole 4a1.

[0019] As shown in Figure 5, the door rotation restricting device 1 includes a bracket 5, an arm 6, a case 4, a slider 10, and a stopper 13. The bracket 5 has a bottom wall 5a, a pair of side walls 5b, and a cover mounting wall 5c. The bottom wall 5a is formed with through-holes for fastening members such as screws to fasten the bracket 5 to the door 3. A bracket cover 9 is attached to the cover mounting wall 5c using fastening members such as screws (see Figure 7(a)). One end of the arm 6 is rotatably connected to the bracket 5.

[0020] The arm 6 has a substantially U-shaped cross section and includes a pair of side walls 6b and a connecting wall 6a. Holes 5b1, 6b1 through which a shaft 14 passes are formed in the side wall 6b of the arm 6 and the side wall 5b of the bracket 5. The arm 6 is rotatable around the shaft 14 relative to the bracket 5. The other end of the arm 6 is rotatably connected to the slider 10. Holes 6b2, 10a through which a first shaft 11 passes are formed in the arm 6 and the slider 10. The arm 6 is rotatable around the first shaft 11 relative to the slider 10.

[0021] The slider 10 includes, for example, a box-shaped slider body 21, and a magnetic body 22, for example, having a U-shaped cross section, fixed to the slider body 21. The magnetic body 22 faces the stopper 13. When the slider 10 moves back and forth within the case 4, the magnetic body 22 is attracted to the stopper 13 and separated from the stopper 13. The slider 10 is formed with a hole 10b through which the second shaft 12 passes.

[0022] The case 4 is generally box-shaped with one end open. The slider 10 is housed in the case 4 so that it can move in a direction perpendicular to the rotation center C of the door 3. A first guide groove 4b1 is formed in the side wall 4b of the case 4 to guide the first shaft 11 that passes through the arm 6 and the slider 10, and a second guide groove 4b2 is formed to guide the second shaft 12 that passes through the slider 10. The linear movement of the slider 10 relative to the case 4 is guided by the first guide groove 4b1 and the second guide groove 4b2. Reference numeral 23 denotes a collar into which the first shaft 11 and the second shaft 12 are inserted and which slides in the first guide groove 4b1 and the second guide groove 4b2. The flange 4a of the case 4 is formed with the above-mentioned elongated hole 4a1.

[0023] As shown in Fig. 6, a stopper 13 that restricts movement of the slider 10 is fixed to the end wall 4c of the case 4. The stopper 13 includes a plurality of yokes 13a and a plurality of magnets 13b arranged between the yokes 13a. When the slider 10 moves toward the stopper 13, the yokes 13a of the stopper 13 attract the magnetic body 22 of the slider 10 and hold the slider 10. Instead of providing the magnets 13b on the stopper 13, the stopper 13 may be provided with an elastic arm or spring that catches a protrusion (not shown) of the slider 10 to hold the slider 10.

[0024] As shown in Fig. 5, a cover mounting plate 24 is provided on the underside of the case 4. Upright pieces 24a and 24b are formed on the cover mounting plate 24. As shown in Fig. 7(a), the case cover 8 is attached to the upright piece 24b using a fastening member such as a screw. An elongated hole 24c whose shape matches the elongated hole 4a1 of the case 4 is formed in the cover mounting plate 24.

[0025] As shown in Fig. 6, when the door 3 is in the closed position, the rotation center C of the door 3 determined by the hinge 7 is located between the bracket 5 and the slider 10 of the door rotation restricting device 1. That is, when viewed from the direction of the rotation center line of the door 3 shown in Fig. 6, the rotation center C of the door 3 is located between a line L1 that passes through the rotation center (axis 14) of the arm 6 relative to the bracket 5 and is perpendicular to the movement direction A of the slider 10, and a line L2 that passes through the rotation center (first axis 11) of the arm 6 relative to the slider 10 and is perpendicular to the movement direction A of the slider 10.

[0026] As shown in Figures 7(a) and 7(b), when the door 3 is opened from a closed state, the door 3 and the bracket 5 rotate around the rotation center C of the door 3. As the bracket 5 rotates around the rotation center C, the arm 6 rotates and the slider 10 moves toward the stopper 13. As shown in Figure 7(c), when the door 3 is opened to 90°, the slider 10 abuts against the stopper 13 and is attracted to the stopper 13. Therefore, the opening angle of the door 3 is maintained.

[0027] The structure of the door rotation restricting device 1 according to this embodiment has been described above. The door rotation restricting device 1 according to this embodiment has the following advantages.

[0028] By configuring the door rotation restricting device 1 as described above, the door rotation restricting device 1 can be made into a unit.

[0029] The stopper 13 is provided with a magnet 13b that attracts the slider 10, so that the opening angle of the door 3 can be maintained.

[0030] The case 4 is attached to the main body 2 in a position adjustable manner, so that the opening angle of the door 3 can be adjusted.

[0031] The case 4 is formed with a first guide groove 4b1 for guiding the first shaft 11 that penetrates the arm 6 and the slider 10, and a second guide groove 4b2 for guiding the second shaft 12 that penetrates the slider 10, so that the movement of the slider 10 relative to the case 4 can be guided. Also, the slider 10 can be prevented from coming off the case 4.

[0032] When the door 3 is in the closed position, the center of rotation C of the door 3 determined by the hinge 7 is positioned between the bracket 5 and the slider 10, so the stroke of the slider 10 relative to the case 4 can be reduced, and the door rotation control device 1 can be made smaller. [Explanation of symbols]

[0033] 1...Door rotation control device 2...Main unit 3...Door 4. Case 4b1...First guide groove 4b2...Second guide groove 5...Bracket 6...Arm 7...hinge 10...Slider 11…1st axis 12…Second axis 13...Stopper 13b...Magnet A...Slider movement direction C: Door rotation center

Claims

1. an arm rotatably connected to a bracket attached to one of the door or the body; a case attached to the other of the door or the main body; a slider that is movably housed in the case and to which the arm is rotatably connected; a stopper fixed to the case for restricting movement of the slider.

2. 2. The door rotation restricting device according to claim 1, wherein the stopper is provided with a magnet for attracting the slider so as to maintain the opening angle of the door.

3. 3. The door rotation restricting device according to claim 1, wherein the case is attached to the other of the two in a position adjustable manner so that the opening angle of the door can be adjusted.

4. The door rotation restricting device according to claim 1 or 2, characterized in that the case is formed with a first guide groove for guiding a first axis that passes through the arm and the slider, and a second guide groove for guiding a second axis that passes through the slider.

5. The door, the main body, a hinge for opening and closing the door, and the door rotation restricting device according to claim 1 or 2, The mounting structure for a door rotation restrictor, wherein when the door is in the closed position, the center of rotation of the door determined by the hinge is located between the bracket and the slider of the door rotation restrictor.

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