JP2009097310A - Stopper for rotating door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple structure stopper which can ensure operation as a stopper, and can easily control the strength of engagement holding force to a floor face by the degree of pushing an operation plate. <P>SOLUTION: The stopper for a rotating door includes a cylindrical body 1 having openings 1a, 1b at the upper and lower end surfaces, an upper shaft 2 and a lower shaft 3 coaxially disposed and vertically slidably supported by the cylindrical body 1, a lock mechanism 4 locking the upward movement of the upper shaft 2, a first spring 5 disposed between the upper shaft 2 and the lower shaft 3, and a second spring 6 returning the lower shaft 3. The upper part of the upper shaft 2 is exposed from the upper end surface of the cylindrical body 1, and its tip end is provided with the operation plate 7. The lower part of the lower shaft 3 is exposed from the lower end surface of the cylindrical body 1, and its tip end forms a floor face contact part 3b. The lock member 4 is provided with an operation lever 4a for operation of locking and lock releasing from outside the cylindrical body 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a stopper that holds a swinging door that swings with a hinge as a fulcrum at an arbitrary opening position.

Conventionally, as a stopper for stopping a rotating door at an arbitrary opening position, a system in which a foot rod held by the door is reversed with a pivot as a fulcrum and its tip is brought into contact with the floor surface (for example, Patent Document 1 to Patent Document) 2) and a system in which a leg rod held on a door is moved downward and its tip is brought into contact with a floor surface (see, for example, Patent Document 3).
JP 09-177411 A JP 2001-190163 A Japanese Unexamined Patent Publication No. 07-14059

However, in the methods of Patent Documents 1 and 2, when the leg rod is inverted downward, the engagement force due to the contact between the leg rod and the floor surface is weak, and a heavy entrance door is sufficient to stop the door. There was a problem that the engagement holding force could not be obtained, and there was a risk that when the foot rod was inverted upward, the hand was accidentally pinched between the foot rod and the door surface.
Further, in the stopper shown in Patent Document 3, the stopper piece 21 that comes into contact with the floor surface is elastically held by the spring against the shaft 22, so that it comes into elastic contact with the floor surface within this elastic range. The shaft 22 (and the shaft 23 integral therewith) for moving the stopper piece 21 downward is moved by the lever (set mechanism 30). Since the stop point is determined, the engagement holding force by the contact between the tip of the stopper piece and the floor surface is always constant. Accordingly, it is necessary to attach the stopper to the door accurately by, for example, incorporating it into the door in advance, and it is difficult for the user to attach the stopper to the door surface later. In addition, there is a drawback that the engagement holding force cannot be increased / decreased by operating the lever according to the strength of the wind, the slipping condition of the floor surface, or the weight of the door.

  SUMMARY OF THE INVENTION Accordingly, the present invention mainly aims to provide a stopper with a simple structure that can eliminate the above-mentioned conventional drawbacks and can easily adjust the strength of the engaging and holding force with respect to the floor surface by the pushing condition of the operation plate. It is the purpose.

  In order to solve the above problems, the present invention takes the following technical means. That is, the stopper according to the present invention includes a cylindrical body 1 having openings 1a and 1b on an upper end surface and a lower end surface, and an upper shaft that is coaxially disposed and is slidably held on the cylindrical body 1 2, the lower shaft 3, a lock mechanism 4 that locks the upward movement of the upper shaft 2, a first spring 5 disposed between the upper shaft 2 and the lower shaft 3, and a first mechanism for returning the lower shaft 3. 2, the upper part of the upper shaft 2 is exposed from the upper end surface of the cylindrical body 1, the operation plate 7 is provided at the tip thereof, and the lower part of the lower shaft 3 is the lower end surface of the cylindrical body 1. The lock mechanism 4 has an operation lever 4a for performing locking and unlocking operations from the outside of the cylindrical body 1 and the tip of the floor surface contact portion 3b is exposed. .

The first spring 5 and the second spring 6 are preferably formed independently of each other, but may be formed by a single spring.
The stopper is used by being attached to the lower surface of the door B with a double-sided adhesive tape or a screw.

  Since the stopper of the present invention is configured as described above, the engagement holding force between the floor surface contact portion of the lower shaft and the floor surface can be easily obtained by merely adjusting the pressing force on the operation plate according to the use situation. It can be adjusted and the door open position can be held securely, and even if there is some mounting error in the vertical mounting position of the stopper on the door, the floor of the lower shaft can be adjusted by pushing the operation plate. Since the surface contact part can be brought into elastic contact with the floor surface, some mounting errors can be absorbed, and the structure is simple and can be manufactured at low cost, and the door can be locked and released easily. There are various effects such as.

Hereinafter, details of the present invention will be described based on embodiments shown in the drawings.
In the figure, reference numeral 1 denotes a synthetic resin cylindrical body having openings 1a, 1b on the upper end surface and the lower end surface, and a part of the peripheral wall is formed on a flat mounting surface 1c. It is formed to be attached to the door A with a double-sided adhesive sheet or screw. The cylindrical body 1 holds an upper shaft 2 and a lower shaft 3 coaxially and slidable up and down. The upper part of the upper shaft 2 is exposed from the upper end opening 1a of the cylindrical body 1 and an operation plate 7 is provided at the tip thereof, and the lower part of the lower shaft 3 is exposed from the lower end opening 1b of the cylindrical body 1. The tip is formed in the floor surface contact portion 3b. A material having a large friction coefficient such as rubber is preferably attached to the floor surface contact portion 3b. A first spring 5 is provided between a flange 2a formed at the lower end of the upper shaft 2 and a flange 3a formed at the upper end of the lower shaft 3, and the flange 3a of the lower shaft 3 and the tubular body 1 are provided. A second spring 6 for returning the lower shaft 3 is provided between the bottom wall 3 and the bottom wall 3.

  Further, the stopper is provided with a lock mechanism 4 for locking the upper shaft 2 at a desired position. The lock mechanism 4 employs a mechanism that allows the upper shaft 2 to move when the upper shaft 2 moves downward and prevents the upward movement when the upper shaft 2 stops at a desired position. In this embodiment, a reverse-shaped plate-like lock plate 4c having a hole 4b through which the upper shaft 2 passes is held in an inclined posture by a spring 4d, and the upper inclined side of the lock plate 4c is the outside of the cylindrical body 1. And is formed on the operation lever 4a. The lock plate 4c is normally held in the inclined posture of FIGS. 1 and 2, and the inner edge of the hole 4b of the lock plate 4c is engaged with the outer peripheral surface of the upper shaft 2. When the upper shaft 2 is pushed down in this state, the lock plate 4c is slightly displaced in a horizontal posture due to friction with the hole 4b, and the engagement force between the hole 4b and the upper shaft 2 is reduced, and the upper shaft is moved downward. However, when the pressing force of the upper shaft 2 is released, the lock plate 4c is returned to the original inclined posture by the spring 4d, and the upper shaft 2 is engaged by the engagement between the inner edge of the hole 4b and the outer peripheral surface of the upper shaft 2. It is designed to lock the movement.

The stopper configured as described above is used by being attached to the surface of the lower end portion of the door A as shown in FIG. At this time, the upper shaft 2 and the lower shaft 3 are moved up to the uppermost positions by the springs 5 and 6, and the lower end contact portion 3 b of the lower shaft 3 is in a state of being lifted from the floor surface B.
When it is desired to hold the door A at a desired opening position, as shown in FIG. 2, the upper plate 2 may be pushed downward by stepping on the operation plate 7 with a foot or the like. The spring 5 is compressed by the downward movement of the upper shaft 2, the lower shaft 3 is pushed down against the return spring 6, and the floor surface contact portion 3 b at the lower end elastically contacts the floor surface to open the door A. Is held in that position. At this time, since the compression repulsion force of the spring 5 and the return spring 6 increases or decreases according to the stepping force on the operation plate 7, the engagement holding force between the floor surface contact portion 3b of the lower shaft 3 and the floor surface B is determined according to the situation. It can be easily adjusted just by adjusting the depressing force with the foot according to. Further, even if there is some error in the vertical mounting position of the stopper on the door A, the floor surface contact portion 3b of the lower shaft 3 can be brought into contact with the floor surface B by stepping on the operation plate 7. Some mounting errors can be absorbed.

  To release the open position of the door A, when the operating lever 4a is pushed down with a foot or the like as shown in FIG. 3, the engagement between the hole 4d of the lock plate 4c and the upper shaft 2 is released, and the spring 5 and the return are restored. The upper shaft 2 and the lower shaft 3 are restored to the original posture of FIG. 1 by the elastic restoring force of the spring 6, and the holding of the open posture of the door A is eliminated.

  In the present invention, the stroke amounts of the upper shaft 2 and the lower shaft 3, the elastic strengths of the spring 5 and the return spring 6 and the like are determined by preferable setting values, and the numerical values are not particularly specified. Further, the lock mechanism 4 described above may be of any type as long as it has the function shown in the above embodiment.

  In the above embodiment, the first spring 5 and the return second spring 6 are formed by independent springs. However, as shown in FIGS. 4 and 5, they are formed by a single continuous spring 5a. You can also. In this case, a horizontal receiving pin 8 is provided on the upper part of the lower shaft 3, and the spring 5 a is divided by the receiving pin 8 in a state of being vertically divided. As a result, the upper part from the receiving pin 8 operates as the first spring 5 described above, and the lower part from the receiving pin 8 operates as the second spring 6 for return to perform the same operation as in the previous embodiment. Can do. With such a configuration, the mechanism can be simplified.

  FIG. 6 shows another embodiment of the present invention. In this embodiment, a hole 2 b that opens downward is provided in the shaft core portion of the upper shaft 2, and is connected to the lower shaft 3. A slide shaft 3c that is slidably fitted into the hole 2 is provided. As a result, the upper shaft 2 and the lower shaft 3 can be smoothly moved up and down without causing lateral shaking on the coaxial line. In this case, as shown in FIG. 7, the lower shaft 3 may be provided with a hole 3d and the upper shaft 2 may be provided with a slide shaft 2c, as shown in FIG.

  Although the present invention has been described in detail above, the present invention can be implemented with appropriate modifications within the scope of the present invention, the purpose of the present invention, and the effects of the present invention.

  The stopper of the present invention can be used for rotating doors such as entrance doors and indoor doors in general.

Sectional drawing which shows one Example of the stopper concerning this invention. It is sectional drawing similar to FIG. 1 of the said stopper, Comprising: The state holding the open attitude | position of a door is shown. Sectional drawing which shows the cancellation | release state of the lock mechanism of the said stopper. Sectional drawing which shows another Example of the stopper concerning this invention. Sectional drawing which shows the state holding the opening attitude | position of the door in the Example shown in FIG. Sectional drawing which shows the other Example of the stopper concerning this invention. Sectional drawing which shows another Example of the stopper concerning this invention.

Explanation of symbols

A Door B Floor surface 1 Tubular body 2 Upper shaft 3 Lower shaft 3a Floor surface contact portion 4 Lock mechanism 4a Lock mechanism operation lever 5 First spring 6 Returning second spring 7 Operation plate

Claims (3)

  A cylindrical body having openings at the upper end surface and the lower end surface, an upper shaft and a lower shaft that are coaxially disposed and are slidably held by the cylindrical body, and an upward movement of the upper shaft are locked. A locking mechanism; a first spring disposed between the upper shaft and the lower shaft; and a second spring for returning the lower shaft, wherein an upper portion of the upper shaft is exposed from an upper end surface of the cylindrical body. The operation plate is provided at the tip of the lever, the lower part of the lower shaft is exposed from the lower end surface of the cylindrical body, and the tip is formed at the floor contact portion. The locking mechanism is locked from the outside of the cylindrical body. And a stopper for the revolving door, characterized by comprising an operation lever for unlocking operation.   The rotating door stopper according to claim 1, wherein the lock mechanism is a mechanism that allows the upper shaft to move when the upper shaft is moved downward, and does not allow the upper shaft to move upward.   The stopper of the revolving door according to claim 1 or 2, wherein the first spring and the second spring are formed by a single spring.

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