JP2008038441A - Folding door opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive folding door opening/closing device for actualizing smooth closing of a folding door by relaxing sudden closing motion of the folding door due to the spring of a center hinge near the terminal of the closing motion of the folding door. <P>SOLUTION: The folding door has right and left door bodies foldably connected to each other via the center hinge 2 so as to be energized to a closing position by the spring of the center hinge 2. A damping implement 10 is provided on each door body. The damping implement 10 has a rotary damper 11 incorporating a rotor 12 mounted on one door body 1a so as to be turned around a vertical shaft. A turning arm 13 is connected at one end to the rotor 12 and slidably connected at the other end to a pivotal shaft 14 provided on the other door body 1b so that the turning arm 13 can be turned together with the rotor 12 during the opening/closing motion of the right and left door bodies. The rotor 12 is formed to produce braking torque in a turning region from a position near the terminal of the closing motion of the folding door to the closing position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a folding door opening and closing device, and more particularly, to a folding door opening and closing device provided with a shock absorber that relieves a sudden closing movement of the folding door.

Conventionally, when closing a folding door by hand, the left and right door bodies are forced by the force of the spring built into the center hinge that connects the left and right door bodies of the folding door, even if the hand is released near the end of the closing motion. In general, it is formed so as to close to a final closing position where it becomes a linear posture. Such a center hinge is disclosed in Patent Documents 1 to 4, for example.
Japanese Patent Publication No. 55-47191 Japanese Utility Model Publication No. 63-134088 No. 03-30541 Japanese Patent Laid-Open No. 03-228989

  However, the force of the spring built into the center hinge acts abruptly in the vicinity of the end of the folding door closing movement, so there are problems such as the generation of vibration and impact sound due to the impact when the folding door is closed. there were.

  In view of this, the present invention reduces the impact at the time of closing the folding door by incorporating a shock absorber in the folding door body in the vicinity of the end of the closing motion of the folding door. The main object of the present invention is to provide a folding door opening and closing device that can be smoothly closed with a simple structure and at low cost.

  In order to achieve the above object, the present invention takes the following technical means. That is, in the folding door opening and closing device according to the present invention, the left and right door bodies are foldably connected by the center hinge, and the sliding body provided at the end of at least one of the door bodies is slidably mounted on the rail. And a folding door that is biased to a closed position in which the left and right door bodies are in a straight posture by a spring incorporated in the center hinge, and is attached to the upper end surface and / or the lower end surface of the door body The shock absorber includes a rotary damper that is attached to one door body and includes a rotor that rotates around the longitudinal axis, and one end of a rotating arm that extends horizontally in the rotor. Connected, the other end of the pivot arm is slidably coupled to a vertical pivot provided on the other door body, and the pivot arm rotates with the rotor as the left and right door bodies open and close. The rotor of the rotary damper is configured to brake a sudden closing movement of the door body in the vicinity of the closing movement end of the door body, and the braking torque by the rotor is a spring of the center hinge. The door is set to be smaller than the closing force.

  The rotor of the rotary damper is formed so as to generate a braking torque in its rotation in a set rotation region by the viscous resistance of oil such as filled silicon or the reaction force of the spring. The set rotation area means the rotation area of the rotor from the position near the closing end of the closing motion of the door body to the closing position.

  Since the present invention is configured as described above, when closing the folding door, the sudden closing movement of the door body is braked by the rotor of the rotary damper near the end of the closing movement, and the folding door is suddenly moved by the spring of the center hinge. The smooth closing movement can be eased, the folding door can be closed smoothly, the occurrence of vibrations and impact sounds due to impacts can be prevented, and the braking torque by the rotary damper can close the door body by the spring of the center hinge. Since it is set to be smaller than the force, the folding door can be reliably closed to the closed position by the spring force of the center hinge, and in addition, it is only necessary to attach the shock absorber to the door body. There is an effect that it can be provided.

  1 to 5 show an embodiment of a folding door opening and closing device according to the present invention. As shown in FIGS. 3 and 4, the folding door 1 includes a pair of left and right door bodies 1 a and 1 b that are foldably connected by a center hinge 2. Each door body 1 a and 1 b has upper and lower surfaces of its free end portion. A sliding body 3 formed by sliding pins is provided, and the sliding body 3 is formed to slide along rails 4 attached to the upper and lower saddles. In FIGS. 3 and 4, the upper rail and the upper planing body are not displayed. Further, in this embodiment, the sliding body 3 of the door body 1b is fixed to the rail 4, but it may be allowed to slide along the rail 4.

  When the left and right doors 1a and 1b are closed to a closed position (see FIG. 2) where the left and right door bodies 1a and 1b are in a linear posture, as in the center hinge disclosed in the patent document, the center hinge 2 is near the end of the closing motion. In the position, a spring incorporating a spring (not shown) forcing the left and right door bodies 1a, 1b toward the closed position is used. Since the mechanism of the center hinge 2 is a technique widely known from the above-mentioned patent documents and the like, detailed description thereof is omitted.

  In the present invention, shock absorbers 10 are attached to the upper and lower end surfaces of the door bodies 1a and 1b in order to alleviate the sudden closing movement of the door bodies 1a and 1b by the spring of the center hinge 2. Since the shock absorbers 10 provided above and below the door bodies 1a and 1b have the same structure, the upper shock absorber 10 will be described below.

  The shock absorber 10 includes a rotary damper 11 attached in the vicinity of adjacent ends on the upper end surface of one door body 1a, and the rotary damper 11 includes a rotor 12 that rotates about a vertical axis. Built-in. In this embodiment, the rotary damper 11 is embedded in a vertical hole 17 formed in the upper surface of the door body 1 a and fixed with screws 18. Further, one end of a rotating arm 13 extending in the horizontal direction toward the other door body 1b is connected to the rotor 12, and the other end of the rotating arm 13 is attached to the upper end surface of the other door body 1b. It is slidably connected to the pivot 14. In this embodiment, the pivot 14 is attached to the door 1b with a screw 15, and the pivot 14 is inserted into a long hole 16 formed in the pivot arm 13 so as to be slidably pivotable. In this way, the rotating arm 13 is formed to rotate together with the rotor 12 from the state shown in FIG. 3 to the state shown in FIG. 4 in accordance with the opening and closing movement of the left and right door bodies 1a and 1b.

  The rotor 12 of the rotary damper 11 is formed so as to generate a braking torque in its rotation in a set rotation region by the viscous resistance of oil such as silicon filled therein and the reaction force of the spring. . The set rotation area means the rotation area of the rotor 12 from the position near the closing end of the doors 1a and 1b shown in FIG. 5 to the closing position shown in FIG. Thereby, it forms so that the sudden closing movement of the door bodies 1a and 1b may be braked. The braking torque by the rotor 12 is set smaller than the door closing force by the spring of the center hinge 2. The rotary damper is well known, for example, “TK rotary damper”, “TOK damper”, “TAKAHATA damper” (both are trade names), and the description of the structure is omitted.

  In the above configuration, when the folding door 1 is operated in the closing direction from the folding door folding position (open position) of FIG. 4, the rotating arm 13 of the shock absorber 10 also rotates together with the rotor 12 of the rotary damper 11. In the vicinity of the end of the closing movement shown, the braking force applied by the rotor 12 applies a brake to the sudden closing movement of the door bodies 1a, 1b, and the sudden closing movement of the folding door 1 by the spring of the center hinge 2 is alleviated. Can be smoothly closed to the closed position of FIG. Further, since the braking torque by the rotor 12 is set smaller than the door closing force by the spring of the center hinge 2, the folding door 1 is moved to the closing position by the spring force of the center hinge 2 even if the hand is released during the door closing. Can be completely closed.

  FIG. 6 shows another mounting means of the rotary damper 11 according to the present invention. A vertical groove 19 is provided on the back surface of the door body 1a, and the rotary damper 11 is fitted into this and screwed. Yes.

  In the present invention, as shown in FIG. 7, the pivot 14 ′ mounted in the elongated hole 16 of the rotating arm 13 can be replaced with one having the same structure as the rotor 12 of the rotary damper 11. In this case, the pivot 14 ′, which is a rotor, can be slid only along the direction of the elongated hole 16, and is configured to rotate while sliding in synchronization with the rotation of the rotation arm 13. Further, the pivot shaft 14 ′, which is a rotor, is formed so that a braking torque is generated in a rotation region from the position close to the closing motion end of the door bodies 1 a, 1 b to the closing position. As a result, a larger braking force can be obtained in cooperation with the rotary damper 11, and a sudden closing movement of the folding door can be reliably mitigated.

  Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments. For example, the shock absorber 10 may be configured to be attached to only one of the upper end surface and the lower end surface of the door body. In addition, the present invention can be implemented with appropriate modifications within the scope of the present invention, achieving the object of the present invention, and achieving the above effects.

  The folding door opening and closing device according to the present invention can be used for all folding doors such as joinery and furniture.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a folding door opening and closing device according to the present invention, and is an exploded perspective view of a main part. The perspective view of the principal part of the said closing device of a folding door. The top view which shows the closed position of the said folding door. The top view which shows the open position of the said folding door. The top view which shows the closing process of the said folding door. The perspective view which shows another attachment means of the rotary damper in this invention. The partial top view which shows another Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding door 1a, 1b Door body 2 Center hinge 3 Sliding body 4 Rail 10 Shock absorber 11 Rotary damper 12 Rotor 13 Rotating arm 14 Axis 16 Long hole

Claims (2)

  The left and right door bodies are foldably connected by a center hinge, a sliding body provided at the end of at least one door body is slidably mounted on the rail, and the left and right door bodies are mounted by springs incorporated in the center hinge. A folding door that is urged to a closed position in a linear posture, and includes a shock absorber attached to the upper end surface and / or the lower end surface of the door body, the shock absorber being one door body And a rotary damper that houses a rotor that rotates about the longitudinal axis, and one end of a rotary arm that extends horizontally toward the other door body is connected to the rotor, and the other end of the rotary arm Is slidably connected to a vertical pivot provided on the other door body, and a rotating arm is formed to rotate together with the rotor as the left and right door bodies open and close. The rotor of the tally damper is formed so that a braking torque is generated at least in a rotation region from the position near the closing motion end of the folding door to the closing position, and the braking torque by the rotor is the door closing force by the spring of the center hinge. A folding door opening and closing device set smaller.   The folding door opening and closing device according to claim 1, wherein the buffer is attached to upper and lower end surfaces of the folding door.

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