JPH0452389A - Door opening/closing device - Google Patents

Abstract

PURPOSE:To open an aimed door at a wide angle while avoiding the door from interfering with adjacent doors, etc., by actuating a pair of upper and lower gear lines in association with the turning movement of the door, and putting a pair of upper and lower arms in synchronous turning movements, the arms each supporting the door. CONSTITUTION:A pair of upper and lower gear lines 8, 12 for associating the turning movement of each arm 6, 5 with that of a door 7 are disposed. When a turning movement control force is exerted in the direction in which the door 7 is opened, the force is transmitted to the upper end 71 (lower end 72) of the door 7 and an externally rotating gear 9(13) starts to rotate. As a result, an intermediate gear 11(15) meshing with the externally rotating gear 9(13) is driven and tends to rotate in the direction opposite to the turning movement (that of the arrow (w)). However, the intermediate gear 11(15) meshes also with a fixed guide gear member 10(14) and therefore does not rotate.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a mechanism for holding a door so that it does not protrude forward beyond the front surface of the door when the door is opened, and This invention relates to a door opening/closing device that can be opened to a position where it can overlap the front surface of the door.

[Prior Art] For example, if you want to arrange multiple doors flush and adjacent to each other in front of an opening, if each door is supported by a conventional hinge, the opening angle of the doors will be much larger than the position where the opening angle reaches 180°. The opened door interferes with the adjacent door in the foreground, creating an inconvenience in which it becomes difficult to open the door any further. This kind of problem can be solved by placing the hinge axis further forward, but if you expand the opening range of the door in this direction, the door will open farther forward than the front when the door is closed. The hinge will protrude. Therefore, there is a problem in that the hinges tend to become a hindrance to traffic, etc., increasing the danger.

On the other hand, some recent door opening/closing devices employ a two-axis hinge mechanism or a multi-joint link mechanism to solve this problem. Examples of the former include those shown in Utility Model Publication No. 60-6133, Utility Model Application Publication No. 62-46772, Utility Model Application Publication No. 62-176374, and Utility Model Application No. 62-176375, which are common to all of these. As the structure, a hinge mechanism a as schematically shown in FIGS. 5(A) to (E) is used, and a pair of hinge mechanisms a are arranged near the upper edge and lower edge of the opening S It supports the upper and lower ends of the door. The structure of this hinge mechanism a is such that the proximal end e of the intermediate body d is pivotally attached to the fixing metal fitting C so as to be rotatable within a restricted rotation range of 90°, and the distal end f of the intermediate body d is
The upper and lower ends of the hanging base of the door are pivoted. And the fifth
From the closed position shown in Figure (A), first rotate the door together with the intermediate body d around the base end pivot point 0 as shown in Figures (A)-(B)-(C). At the intermediate rotation position where the is rotated by 90 degrees, the tip pivot point f protrudes to the front of the opening S, and from this position, the door only closes around the protruding tip pivot point f, as shown in the figure. (C)-(D)-(E)
By rotating the door as shown in the figure, the door can be placed in front of the adjacent door without interfering with the front of the adjacent door at the final rotation position where the door is further rotated 90 degrees from the intermediate rotation position. It has become.

An example of the latter is shown in Japanese Utility Model Publication No. 63-19493, in which a pair of multi-joint link mechanisms are disposed on both upper and lower edges of the opening, although not shown, and these link mechanisms are The upper and lower ends of the hanging base of the door are pivotally supported through the hinge. Then, with the multi-joint link, as the door rotates, the joint at the tip of the link protrudes toward the front side of the opening, and at the same time, the door rotates around the joint at the tip, allowing it to fit into the opening. On the other hand, when the door is rotated close to 1800 degrees, the door can be placed in front of the adjacent door without interfering with the door.

[Problems to be Solved by the Invention] However, the above-mentioned hinge mechanism a moves the rotation axis from e to f at the intermediate rotation position, and the operation is performed with a two-step feel. .

For this reason, there is a drawback that it is not possible to achieve continuous operability like a normal door. A similar problem exists in multi-joint link mechanisms in that the links of each part expand and contract irregularly, leaving a feeling of discomfort in operability.

The present invention has been made with attention to such problems, and it is possible to open a target door at a wide angle while avoiding interference with adjacent doors etc. by using a new idea.
Moreover, it is an object of the present invention to provide a door opening/closing device that can improve the operability related to the opening/closing operation of the door.

[Means for Solving the Problems] In order to achieve the above object, the present invention takes the following measures.

That is, the door opening/closing device of the present invention operates a pair of upper and lower gear trains in conjunction with the rotational movement of the door, and these gear trains synchronously rotate the pair of upper and lower arms that support the door. ing. For this purpose, each arm is pivotally connected horizontally to a fixing member disposed within the opening, and is placed close to the upper and lower edges of the opening. This is for closing the opening, and the upper and lower ends of the hanging base are pivotally supported at the tips of both arms. Then, each gear train is meticulously aligned with the pivot point of the hanging base of the door, and the axle of the outer rotary gear fixed to the door is aligned with the pivot point of the base end of the arm. a fixed guide gear member fixed to the fixed member; and an odd number of intermediate gears that are pivotally attached between the base end and the distal end of the arm and indirectly engage the outer rotating gear and the fixed guide gear member; It is characterized by being composed of.

The number of intermediate gears in each gear train can most easily be one.

The fixed guide gear member may have teeth partially around the axis, or may have teeth over 360° around the axis.

[Operation] When the door is rotated in the opening direction, the outer rotary gear rotates together with the door. As a result, the intermediate gear meshing with this outer rotating gear also follows and attempts to rotate. However, since this intermediate gear also meshes with the fixed guide gear member, in order to follow the outer rotation gear, it must perform planetary motion along the outer periphery of the fixed guide gear member in the opposite direction of the door's movement.

As a result, the more the door is rotated, the more the arm that pivots the intermediate gear will move away from the adjacent door and protrude toward the front of the opening (if you perform the opposite operation, , the arm retreats to the back side of the opening ().Such a movement occurs simultaneously on both arms because the rotational force applied to the door is transmitted to the upper and lower ends of the hanger through the rigidity of the door. , both arms can be synchronized.

However, if you set the tip pivot point to protrude forward from the front of the door when the door is rotated close to 180 degrees, you can avoid interference with adjacent doors, etc., and rotate the door 180 degrees.
It is possible to rotate it and place it in front of an adjacent door, etc.

Moreover, with this configuration, the arm rotates continuously, so unlike the hinge mechanism or link mechanism described above, it is possible to change the upper and lower ends of the door hanger at the same rate from beginning to end. .

[Example 1] An example of the present invention will be described below with reference to FIGS. 1 to 4.

The door opening/closing device of this embodiment is applied, for example, to an iron door for closing the front opening S of a power distribution board installed in the wall of a building, etc., flush with the partition along the wall. Ru.

Specifically, behind the opening S, pillars 1 that form part of the architectural structure are erected at regular intervals, and upper brackets 2 and lower brackets 3 used as fixing members are attached to these pillars 1. is permanently installed. Then, the bearings 2a and 3a are attached to these brackets 2.3, and the base end 6a of the upper arm 6 and the base end 5a of the lower arm 5, which extend parallel to each other, are connected to the support shaft 4a, 4b. Bearings 6c, 5 are attached to the tips 6b, 5b of these arms 6.5.
c is attached, and the door 7 is pivotally supported between these bearings 5c and 6c.

The door 7 is made by rigidly connecting a horizontal frame member 7a and a vertical frame member 7b made of iron pipes, and has mounting brackets 7C at the upper end 7□ and lower end 72 of the hanging base.
Shafts 7e and 7f are integrally protruded through 17d. These shafts 7 e s 7 f are supported by both the bearings 6 c and 5 c.

In such a configuration, in this embodiment, each arm 6.
A pair of upper and lower gear trains 8.12 is configured to associate the rotational movement of the door 5 with the rotational movement of the door 7.

The gear train 8 includes an external rotary gear 9 which is fixed on the outer periphery of the shaft 7e with its axis m aligned with the shaft 7e, and a shaft which is attached to the outer periphery of the flange 2 at the pivot point of the arm 6 using the upper flange 2. A fixed guide gear member 1 having partial teeth arranged around the center with matching centers n.
0, and one intermediate gear that is rotatably mounted between the base end 6a and the distal end 6b of the arm 6 via a shaft 11a and meshes with both the external rotary gear 9 and the fixed guide gear member 10 at the same time. It consists of 11. The gear train 12 also includes an external rotary gear 13 fixed on the outer periphery of the pin 7f with its axis m coincident with the pin 7f, and a pivot point of the arm 5 on the outer periphery of the flange 3 using the lower flange 3. A fixed guide gear member 14 having partial teeth partially disposed around the axis with the axis n coincident with the pin 15a between the base end 5a and the distal end 5b of the arm 5.
one intermediate gear 15 that is pivotally connected via a shaft and meshes with both the outer rotary gear 13 and the fixed guide gear member 14 at the same time;
It consists of

Next, the operation of this embodiment will be explained. When a rotation operating force is applied to the door 7 in the direction of the arrow U toward the opening direction from the closed position shown by the solid line in FIG. As a result, the outer rotary gear 9 (13) begins to rotate together with the door 7 in the direction of the arrow ■ in the figure. As a result, the intermediate gear 11 (15) meshing with the external rotary gear 9 (13) also follows and attempts to rotate in the opposite direction (arrow W direction). However, this intermediate gear 11 (15)
is also meshed with the fixed guide gear member 10 (14), so in order to follow the external rotation gear 9 (13), the door 7 must be moved along the outer periphery of the fixed guide gear member 10 (14) in the closing direction ( A planetary motion must be performed in the direction of arrow X). As a result, the more the door 7 is rotated, the more the intermediate gear 11 (15
), which is pivoted on the arm 6 (5), will separate from the adjacent door 7 and protrude toward the front side of the opening S (if you perform the opposite operation, the arm 6 (5) will (It retreats to the back side of the opening S.) In this way, both arms 6
．． 5 follows the rotational movement of the door 7 in synchronization with it.

Therefore, when the door 7 rotates 180 degrees, the axis m is aligned with the door 7.
If each gear ratio is set so that the door 7 protrudes forward from the front surface, the door 7 can be rotated 90 degrees from the closed position (see Figure 4), and then the door 7 can be rotated 90 degrees from this position. By rotating the door 7, it is possible to overlap the front surface of the adjacent door 7 without interfering with the front surface of the adjacent door 7, as shown by the imaginary line in FIG. By being able to open the section S over a wide angle, it becomes possible to perform work related to operation, maintenance, and management of the switchboard smoothly and efficiently without blocking the passage on the front side.

Moreover, according to this configuration, since both arms 6.5 rotate continuously, unlike a hinge mechanism or a link mechanism, the upper and lower ends 71.72 of the light output of the door 7 are always rotated at the same rate from the beginning to the end. It can be changed. Therefore, you will not be shocked or feel any discomfort during operation, and it will be possible to obtain an operational feel similar to that of conventional hinges.

Note that the number of intermediate gears can also be three or more.

Further, as the fixed guide gear member, a normal gear having teeth over 360 degrees can also be used. In addition, various modifications can be made without departing from the spirit of the present invention.

[Effects of the Invention] Since the present invention has the above-described configuration, it is possible to open the target door at a wide angle while avoiding interference with adjacent doors, etc., and in addition, it is possible to open and close the door with no shock. It is possible to provide a door opening/closing device that has excellent operability and can be operated without causing any discomfort or discomfort.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a partially omitted perspective view, Figure 2 being a sectional view along the longitudinal direction of the arm and the surface direction of the door, and Figure 3 being a cross-sectional view along the longitudinal direction of the arm and the surface direction of the door. and FIG. 4 are schematic partial plan cross-sectional views for explaining the operation. Figure 5(a)~
(e) is an explanatory diagram schematically showing the conventional structure along with its function. 2.3...Fixing member (bracket) 5...Lower arm 5a...Base end portion 5b...
・Tip part 6...Upper arm 6a...Base end part 6b...Tip part 7...Door
7□・・・Top end of Idemitsu 7□・・・Bottom edge of Idemitsu 8
．． 12... Gear train 9.13... External rotation gear 10.14... Fixed guide gear member 11.15... Intermediate gear

Claims (4)

[Claims] (1) A door opening/closing device that operates a pair of upper and lower gear trains in conjunction with the rotational movement of the door, and these gear trains synchronously rotate a pair of upper and lower arms that support the door. , each arm is pivotally connected horizontally to a fixing member disposed within the opening, and is located close to the upper edge and lower edge of the opening, respectively, and the door is connected to the opening. The upper and lower ends of the hanging base are pivotally supported at the tips of both arms, and each gear train is aligned with the pivot point of the hanging base of the door, and the gear train is aligned with the pivot point of the hanging base of the door. an external rotation gear fixed to the door, a fixed guide gear member fixed to the fixed member with its axis aligned with the base end pivot point of the arm, and between the base end and the distal end of the arm. A door opening/closing device comprising an odd number of intermediate gears that are pivotally mounted and indirectly mesh with the outer rotating gear and the fixed guide gear member. (2) The door opening/closing device according to claim 1, wherein each gear train has one intermediate gear. (3) The door opening/closing device according to claim 1, wherein the fixed guide gear member has teeth partially around the axis. (4) The door opening/closing device according to claim 1, wherein the fixed guide gear member has teeth over 360 degrees around the axis.