JP2595777B2 - Door opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a mechanism for holding a door that does not protrude forward from the front of the door when the door is closed. The present invention relates to a door opening / closing device that can be opened to a position where it can be superimposed on a front surface of a door to be opened.

[Prior art] For example, when it is desired to arrange a plurality of doors on the front surface of an opening in a plane adjacent to each other, each door is supported by a conventional hinge.
At a position far from the position where the opening angle of the door reaches 180 °, the opened door interferes with an adjacent door, causing a problem that it is difficult to open the door any further. Such a problem can be solved by disposing the hinge axis more forward, but if the opening range of the door is expanded in such a direction, when the door is closed, it is located forward of the front of the door. The hinge will protrude. For this reason, the hinge tends to be a hindrance to traffic and the like, and there is a problem that the danger increases.

On the other hand, some recent door opening / closing devices have adopted a biaxial hinge mechanism or an articulated link mechanism to solve such inconvenience. Examples of the former include Japanese Utility Model Publication No. 60-6133, Japanese Utility Model Publication No. 62-46772, and Japanese Utility Model Application Laid-open No. 62-17637.
No. 4, Japanese Utility Model Application Laid-Open No. 62-176375, etc., are shown in FIGS.
(E) A hinge mechanism a as schematically shown is used, and the hinge mechanism a is arranged in a pair near the upper edge and the lower edge of the opening S so as to support the upper and lower ends of the door b. ing. The structure of the hinge mechanism a is such that the base end e of the intermediate body d is rotatably connected to the fixing metal c within a regulation rotation range of 90 °. The upper and lower ends of the suspension base are pivoted. Then, from the closed position shown in FIG. 5 (A), first, the door b is rotated together with the intermediate body d around the base pivot point e as shown in FIG. 5 (A) → (B) → (C). At the intermediate rotation position where the door b is rotated by 90 °, the tip pivot point f is protruded to the front of the opening S. From this position, the door b is now turned around the protruded tip pivot point f. (C) → (D) → (E) in the same manner as shown in the figure, the front surface of the adjacent door b at the final rotation position where the door b is further rotated 90 ° from the intermediate rotation position. Also, the door b can be arranged without causing interference.

Examples of the latter include those shown in Japanese Utility Model Publication No. Sho 63-19493. Although not shown, a pair of articulated link mechanisms are arranged on both upper and lower edges of the opening, and these link mechanisms are used. The upper and lower ends of the hanging point of the door are pivotally supported through the door. The articulated link allows the joint at the distal end of the link to protrude toward the front side of the opening as the door rotates, and, at the same time, rotates the door around the joint at the distal end to form the joint at the opening. On the other hand, when the door is turned to nearly 180 °, the door can be arranged in front of an adjacent door without causing interference.

[Problems to be Solved by the Invention] However, the hinge mechanism a described above moves the rotation axis from e to f at the intermediate rotation position, and is operated with a two-step feel. . For this reason, when it is desired to obtain continuous operability like a normal door, there is a drawback that this cannot be coped with. The articulated link mechanism also has a similar problem that the operability remains uncomfortable because the link of each part expands and contracts irregularly.

The present invention has been made in view of such a problem, and a completely new idea can open a target door at a wide angle while avoiding interference with an adjacent door or the like. It is another object of the present invention to provide a door opening / closing device that can be easily operated and can further improve operability related to door opening / closing operation.

[Means for Solving the Problems] The present invention employs the following means to achieve the above object.

That is, the door opening and closing device of the present invention operates the pair of upper and lower gear trains in conjunction with the pivoting operation of the door, and the pair of upper and lower arms supporting the door are synchronously rotated by these gear trains. ing. For this purpose, each arm is pivotally attached to a fixing member disposed in the opening so as to be horizontally pivotable, and is positioned close to an upper edge and a lower edge of the opening, respectively. For closing the opening,
The upper and lower ends of the suspension base are pivotally supported at the distal ends of the arms. Then, the respective gear trains are made to coincide with the abduction gear fixed to the door by aligning the axis with the pivot point of the hanging point of the door and the axis with the pivot point at the base end of the arm. A fixed guide gear member fixedly mounted on the fixed member, and an odd number of intermediate gears axially mounted between the base end and the distal end of the arm for indirectly meshing the external rotation gear and the fixed guide gear member. , And the fixed guide member is formed by providing teeth around the outer periphery of the fixed member.

In the simplest case, only one intermediate gear is required.

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

[Operation] When the door is turned in the opening direction, the external gear rotates together with the door. As a result, the intermediate gear meshing with the external gear also tries to rotate. However, since this intermediate gear also meshes with the fixed guide gear member, in order to follow the external rotation gear, the planetary movement must be performed in the counter-rotating direction of the door along the outer periphery of the fixed guide gear member. . As a result, as the door is rotated, the arm on which the intermediate gear is pivotally moved away from the adjacent door, and protrudes toward the front side of the opening (when the operation opposite to the above is performed). , The arm retracts to the back of the opening). Such an operation occurs in both arms at the same time by transmitting the turning operation force applied to the door to the upper end and the lower end of the suspension through the rigidity of the door, and the two arms can be synchronized. However, if the tip pivot point is set so that it protrudes forward from the front of the door when the door is rotated to nearly 180 °, interference with adjacent doors etc. is avoided, and that door is moved 180 °.゜ It is possible to rotate and place it on the front of an adjacent door or the like.

Moreover, according to this configuration, since the arm rotates continuously, unlike the above-described hinge mechanism and link mechanism, it is possible to always change the upper and lower ends of the door suspension from the beginning to the end at the same rate. . Further, since the fixed guide member is formed with teeth around the outer periphery of the fixed member so as to be formed integrally with the fixed member, parts for mounting the fixed guide member can be reduced. Can be made easier.

[Embodiment] One embodiment of the present invention will be described below with reference to FIGS.

The door opening / closing device of this embodiment is applied to, for example, an iron door for closing a front opening S of a switchboard provided on a wall of a building or the like in a partitioned manner along the wall. You.

More specifically, a support 1 that forms a part of a building structure is erected at regular intervals behind the opening S,
Upper bracket 2 used as a fixing member for those columns 1
And the lower bracket 3 is fixed. Then, bearings 2a, 3a are mounted on these brackets 2, 3, and the base end 6a of the upper arm 6 and the base end 5a of the lower arm 5 extending in parallel to these bearings 2a, 3a are connected to the support shafts 4a, 4b is supported through. Bearings 6c, 5c are mounted on the distal ends 6b, 5b of these arms 6, 5, and the door 7 is pivotally supported between these bearings 5c, 6c.

Door 7, which has contact with the horizontal frame member 7a and the vertical frame member 7b made of iron pipes Tsuyoshi, shaft 7e, 7f is integrally collision through the upper end ₇₁ and lower end 7 ₂ of Tsumoto mounting bracket 7c, and 7d It is set up. And these axes
7e and 7f are supported by the bearings 6c and 5c.

In such a configuration, in the present embodiment, a pair of upper and lower gear trains 8 and 12 for associating the turning operation of each arm 6 and 5 with the turning operation of the door 7 is formed. The gear train 8 is provided integrally on the outer periphery of the bracket 2 by using the upper bracket 2 and the external rotation gear 9 fixed on the outer periphery of the shaft 7e so that the axis m coincides with the shaft 7e. A fixed guide gear member 10 in which a partial tooth is circumferentially provided with the axis n coincident with the point of attachment.
And the external gear 9 and the fixed guide gear member, which are axially mounted between a base end 6a and a distal end 6b of the arm 6 via a shaft 11a.
10 and one intermediate gear 11 that meshes with both at the same time. The gear train 12 is provided integrally on the outer periphery of the bracket 3 by using the lower bracket 3 and the external gear 13 fixed on the outer periphery of the pin 7f with the axis m coincident with the pin 7f. A pin 15a is provided between the base end 5a and the tip 5b of the arm 5 and a fixed guide gear member 14 in which the axis n is coincident with the pivot point of One intermediate gear 15 which is axially mounted via the shaft and meshes with both the external rotation gear 13 and the fixed guide gear member 14 at the same time.

Next, the operation of the present embodiment will be described. When a turning operation force is applied to the door 7 in the direction of the arrow u from the closed position shown by the solid line in FIG. 3 toward the opening direction, this operation force is applied to the upper end 7 ₁ (lower end 7 ₂ ) of the hanging base of the door 7. And the external rotation gear 9 (13) starts rotating together with the door 7 in the direction of arrow v in the figure. As a result, the intermediate gear 11 meshed with the external rotation gear 9 (13)
(15) also follows and tries to rotate in the anti-rotation direction (the direction of arrow w). However, since the intermediate gear 11 (15) also meshes with the fixed guide gear member 10 (14), the external gear 9 (1
3) To follow, the planetary movement must be performed along the outer circumference of the fixed guide gear member 10 (14) in the closing direction of the door 7 (the direction of the arrow x). As a result, the more the door 7 is rotated, the more the arm 6 on which the intermediate gear 11 (15) is pivotally mounted.
(5) separates from the adjacent door 7 and protrudes to the front side of the opening S. Performing the reverse operation to the above,
The arm 6 (5) retracts to the back side of the opening S.
In this way, the arms 6 and 5 follow in synchronization with the turning operation of the door 7. However, if each gear ratio is set so that the axis m protrudes forward from the front surface of the door 7 when the door 7 rotates 180 °, the door 7 is moved from the closed position.
By turning the door 7 further by 90 degrees from this position after being turned by 90 ° (see FIG. 4), the door 7 is moved to the front side of the adjacent door 7 as shown by the imaginary line in FIG. Can be superposed and arranged without causing interference on the way. For this reason, since the opening S can be released at a wide angle by the door opening / closing device, it becomes possible to smoothly and efficiently perform the operation related to the operation, maintenance, and management of the switchboard without blocking the passage or the like on the front side.

Moreover, according to this configuration, since both arms 6 and 5 rotate continuously, unlike a hinge mechanism or a link mechanism,
The upper and lower ends 7 ₁ and 7 ₂ of the hanging base of the door 7 can always be changed at the same rate from the beginning to the end. For this reason, a shock or a sense of incongruity is not felt during the operation, and it is possible to obtain an operation feeling close to a conventional hinge. The number of intermediate gears may be three or more.
Alternatively, the fixed guide gear member may be a normal gear having teeth extending over 360 degrees. In addition, various modifications can be made without departing from the spirit of the present invention.

[Effect of the Invention] Since the present invention has the above configuration, the target door can be opened at a wide angle while avoiding interference with an adjacent door, etc., and the number of parts is small and the assembling work is easy. Thus, it is possible to provide a door opening / closing device excellent in operability, on which opening and closing can be performed without causing a shock or a sense of incongruity.

[Brief description of the drawings]

1 to 4 show one embodiment of the present invention. FIG. 1 is a partially omitted perspective view, FIG. 2 is a sectional view taken along the longitudinal direction of an arm and the plane direction of a door, and FIG. 4 and 4 are schematic partial plan sectional views for explaining the operation. Fig. 5 (a)-
(E) is explanatory drawing which shows the conventional structure typically with an effect | action. 2, 3 ... fixing member (bracket) 5 ... lower arm, 5a ... base end 5b ... tip end, 6 ... upper arm 6a ... base end, 6b ... tip end 7 ... door, 7 ₁ … Top end of suspension base 7 ₂ … Bottom end of suspension base 8, 12, Gear train 9, 13, External rotation gear 10, 14,… Fixed guide gear member 11, 15,… Intermediate gear m, n: axis, S: opening

Claims (4)

(57) [Claims] 1. A door opening / closing device wherein a pair of upper and lower gear trains are operated in conjunction with a pivoting operation of a door, and the pair of upper and lower arms supporting the door are synchronously rotated by these gear trains. Each arm is pivotally attached to a fixed member disposed in the opening so as to be horizontally pivotable, and is positioned close to an upper edge and a lower edge of the opening, respectively. The upper and lower ends of the suspensions are pivotally supported at the distal ends of the two arms, and the respective gear trains are aligned with the pivots of the suspensions of the door. An abduction gear fixed to the door, a fixed guide gear member fixed to a fixed member with its axis aligned on the base pivot point of the arm, and a base end and a tip of the arm. An odd number of intermediate gears which are axially mounted between the external gear and the fixed guide gear member to indirectly mesh with each other; Configured, the outer peripheral door opening and closing apparatus characterized by constituting the fixed guide gears member by circumferentially the teeth of the fixed member. 2. The door opening / closing device according to claim 1, wherein the number of intermediate gears in each gear train is one. 3. The door opening and closing device according to claim 1, wherein the fixed guide gear member has teeth partially around the axis. 4. The door opening and closing device according to claim 1, wherein the fixed guide gear member has teeth extending 360 degrees around the axis.