JP4033789B2 - Accordion door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an accordion door, and more particularly to an accordion door that can be automatically closed or opened by a biasing means.
[0002]
[Prior art]
Conventionally, as an accordion door, an accordion door body in which a decorative covering material is arranged before and after a telescopic hinge is supported by being suspended by a runner, and the runner can be opened and closed by traveling on a rail. Generally known. Furthermore, an accordion door that can be automatically closed or opened using a biasing force by a biasing means such as a spring is known (see, for example, Patent Document 1).
[0003]
In the accordion door described in Patent Document 1, an elastic body that is an urging unit that urges two opposing vertices out of the four vertices of at least one rhombus-shaped portion of the hinge toward each other. Is provided. The elastic body urges the hinge in a direction in which the hinge extends or contracts, whereby the hinge automatically extends or contracts, and the accordion door operates in the closing or opening direction.
[0004]
[Patent Document 1]
JP-A-2002-339665 gazette
[Problems to be solved by the invention]
However, when the conventional accordion door is automatically operated in the closing or opening direction, the opening / closing speed differs depending on the size of the product, the material of the decorative covering material, or the spring force of the spring constituting the biasing means. Therefore, the opening / closing speed varies from product to product. For this reason, when the spring strength is set in accordance with a small-sized product, the opening / closing speed of the large-sized product becomes too slow, and in some cases, it may not be possible to close or open completely automatically. On the other hand, if the spring strength is set according to a large size product, the opening and closing speed is too high for the small size. For this reason, it is conceivable to use different springs depending on the size, but the parts cannot be shared, resulting in an increase in product cost.
[0006]
In order to solve such problems, the applicant of the present invention disclosed in Japanese Patent Application No. 2001-288770 that the braking speed for controlling the running speed of the runner is provided in the runner so that the opening / closing speed of the accordion door is moderately adjusted. It is proposed to make it.
[0007]
However, since the braking means is built in the runner, there is a problem that the runner is enlarged and the rail is enlarged, and a dedicated runner and rail are required.
[0008]
The present invention has been made in view of such problems, the opening and closing speed is not too fast or too slow depending on the product, the opening and closing speed can be appropriate, and without increasing the size of the parts, or An object of the present invention is to provide an accordion door that can be used as it is and can be constructed at low cost.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, according to the first aspect of the present invention, an accordion door body in which a decorative covering material is disposed before and after a telescopic hinge is supported by a runner, and the runner travels on a rail. In the accordion door, which is freely opened and closed, further provided with biasing means, and the runner can automatically run on the rail in either the opening direction or the closing direction by the biasing force of the biasing means,
A brake that operates in conjunction with expansion and contraction of the hinge extends between two points of the extendable hinge , and the brake is disposed inside the accordion door body.
[0010]
When the accordion door main body automatically moves in the closing direction or the opening direction by the urging means, the brake decelerates the extension or contraction operation of the hinge. That is, by setting the urging force of the urging means large to some extent and decelerating by the brake, the maximum closing speed or the maximum opening speed of the accordion door can be kept within a certain allowable range as a result. Thus, even if the biasing force of the biasing means is not precisely adjusted according to the size of the accordion door or the material of the decorative covering material, the opening / closing speed is moderately adjusted without being too fast or too slow. It can be.
[0011]
Because the brake is arranged inside the accordion door, the brake can be set without increasing the size of existing parts. Runners and rails can be used without existing parts, and can be used with accordion door parts that do not have a function to automatically close or open. can do.
[0012]
According to a second aspect of the present invention, in the first aspect of the present invention, in the hinge according to the first aspect, a pair of hinge pieces are pivotally connected to each other by a pivot at a central portion thereof to be connected in an X shape to form a hinge element. A plurality of hinge elements are connected one after the other by pivotally connecting hinge pieces of adjacent hinge elements, and the brake is installed between the two pivot shafts of the hinge. It is characterized by that. Since the distance over which the brake is installed changes in conjunction with the expansion and contraction of the hinge, the brake can be operated in accordance with this change.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is an overall view showing an accordion door of the present invention. In the figure, reference numeral 10 denotes a rail, and an accordion door main body 14 is suspended and supported by a plurality of runners 12 capable of traveling on the rail 10. The accordion door body 14 includes frames 16, 18 provided at both ends in the left-right direction, a hinge 20 that can be extended and contracted between the frames 16, 18, and a cloth that is connected to the hinge 20 and arranged before and after the hinge 20. , And a decorative covering material 22 made of plastic sheet, leather or the like.
[0015]
A plurality of hinges 20 can be provided at appropriate intervals in the vertical direction. A partial detail view of the hinge 20 arranged at the top is shown in FIG. As shown in the figure, the hinge 20 includes a pair of hinge pieces 24 and 25 having substantially the same length, which are pivotally connected to each other by a pivot 26 at a central portion thereof to form an X-shaped hinge element 28. Further, the end portions of the hinge pieces 24, 25 constituting the adjacent hinge elements 28 are connected to each other by a pivot 30, and a plurality of hinge elements 28 are connected one after another. Therefore, the hinge 20 has the four pivots at the opposite pivots 26 and 26 (the pivot connection point) and the opposite pivots 30 and 30 (the pivot connection point), and each of the hinge pieces 24 and 25 constituting a certain hinge element 28. A plurality of rhombus-shaped portions 32 each having a rhombus shape having four sides of the half and each of the half of the hinge pieces 25 and 24 constituting the adjacent hinge element 28 are connected. When the interior angle of the rhombus-shaped portion 32 changes and the rhombus-shaped portion 32 is deformed, the hinge 20 expands and contracts. Hereinafter, for the sake of explanation, the line connecting the pivot 30 to the pivot 26 of a certain hinge element 28 and the axis of the adjacent hinge element 28 connected from the pivot 30 constituting the side of each rhombus-shaped portion 32. The interior angle formed with the line connecting the line 26 is referred to as the hinge opening angle θ. In addition, the pivots 30 of the hinge elements 28 corresponding to the vertical directions of the hinges 20 are connected by a wire rod 36 penetrating the pivot 30 so that the vertical hinge elements 28 extend and contract in synchronization. Formed.
[0016]
In the present embodiment, when the accordion door is closed, the accordion door can be automatically moved in the closing direction by manually operating the accordion door in the slightly closing direction. As a means, a tension spring 34, which is an elastic body, is further provided only on the hinge 20 disposed at the uppermost position as a biasing means. Of course, the urging means in this example is an example, and not limited to this example, any urging means can be provided.
[0017]
The tension spring 34 is stretched between a pair of pivots 30, 30 that are opposite vertices of the rhombus-shaped part 32, and the pivot 30, which is always the opposite vertex of the rhombus-shaped part 32, is stretched by the tension spring 34. 30 are biased in a direction approaching each other. The tension springs 34 can be provided on all the rhombus-shaped portions 32, but may be provided on every other rhombus-shaped portion 32 at appropriate intervals, for example, as shown in the example, and the spring force and the accordion door main body may be provided. It can be set as appropriate according to the balance with the weight of 14. Further, the hinge provided with the tension spring 34 is not limited to the uppermost hinge, and can be provided on any hinge 20, and can be provided on any rhombus-shaped portion 32 of any hinge 20. Is possible. Further, the tension spring 34 can be hung on a wire 36 penetrating each pivot 30.
[0018]
As shown in FIGS. 1 and 4, a brake 40 is provided on the hinge 20 that expands and contracts. The brake 40 is provided over the two pivots 26 and 26 of the hinge 20, and a pair of attachment ends 40 a and 40 a are attached to the pivots 26 and 26. Further, one ends of the arms 40b, 40c are pivotally attached to the mounting ends 40a, 40a, and a rotary brake 40d is provided at the other ends of the arms 40b, 40c. As the rotary brake 40d, any known rotary brake such as an oil brake or a centrifugal brake can be used. The rotary brake 40d operates according to the relative rotational movement of the other end of each of the arm 40b and the arm 40c. Output power. The rotary brake 40d outputs a braking force only in one relative rotation among the relative rotations generated at the other ends of the arms 40b and 40c, and does not output a braking force in the opposite relative rotation. Is good. In this embodiment, when the arms 40b, 40c rotate relative to each other in the direction in which the mounting ends 40a, 40a are separated from each other, a braking force is output, and conversely, the arms 40b, 40a in the direction in which the mounting ends 40a, 40a approach each other. When 40c rotates relatively, it is good not to output a braking force. Further, not only the rotary brake but also a linear brake that generates a braking force according to the distance between the two points of the hinge 20 can be used.
[0019]
A stopper case 42 is disposed in the accordion door main body 14, and one end portion of the cord 44 is connected to the mainspring having one end fixed to a part of the stopper case 42 in the stopper case 42. The cord 44 is wound by the action of the mainspring in the stopper case 42 unless an external force is applied. The other end of the cord 44 is connected to the left and right inner side surfaces of the frame 18, and the cord 44 is pulled out or drawn from the stopper case 42 as the frame 18 moves. A cord stopper 46 is attached to an intermediate position of the cord 44, and the cord stopper 46 is engaged with the stopper case 42 so that the accordion door can be kept open. A handle 50 is attached to the frame 18.
[0020]
In the accordion door configured as described above, the state shown in FIG. 2 is that the accordion door main body 14 is in the open state, that is, the hinge 20 is contracted. At this time, although a tensile force is applied to the tension spring 34, the hinge opening angle θ of each rhombus-shaped portion 32 is small, and the hinge pieces 24, 25 constituting the two sides of each rhombus-shaped portion 32 are tensioned. It is substantially parallel to the direction of the tensile force of the spring 34, and the rotational moment acting on each hinge piece 24, 25 is small. Therefore, the accordion door main body 14 is maintained in the open state by the engagement between the cord stopper 46 and the stopper case 42.
[0021]
From the state where the accordion door is open, the engagement between the cord stopper 46 and the stopper case 42 is released to separate them, and the frame 18 is moved in the closing direction with the handle 50 provided on the frame 18 in FIG. As the runner 12 travels along the rail 10, the hinge 20 changes from the contracted state of FIG. 2 to the extended state. Thereby, hinge opening angle (theta) of each rhombus-shaped part 32 of the hinge 20 increases. When the hinge opening angle θ increases, the rotational moment due to the tensile force of the tension springs 34 acting on the hinge pieces 24 and 25 constituting the two sides of each rhombus-shaped portion 32 increases, and the thrust for extending the hinge 20 works. Even if the frame 18 is not moved, the runner 12 automatically travels in the rail 10 and the accordion door is closed. When the frame 18 is completely moved, the tensile force of the tension spring 34 acting on the hinge pieces 24, 25 still keeps the accordion door body 14 closed.
[0022]
When the accordion door is automatically closed, the distance between the pivots 26 and 26 is extended in conjunction with the extension of the hinge 20, and the rotary brake 40d of the brake 40 generates a braking force. As a result, the extension speed of the hinge 20 is reduced. For this reason, if the brake 40 is not present, the tensile force of the tension spring 34 is such that the hinge 20 extends at a high operating speed regardless of the dimensions of the accordion door and the material of the decorative covering material 22. Is originally set to be somewhat large, and is set so that the maximum operating speed falls within the allowable speed range by being decelerated by the brake 40 without depending on the dimensions and the material of the decorative covering material.
[0023]
Next, when the accordion door is opened again from the closed state, the frame 18 is moved in the opening direction by holding the handle 50. At this time, the hinge pieces 24 and 25 must be rotated in the opposite direction against the rotational moment acting on the hinge pieces 24 and 25 by the tensile force of the tension spring 34, but as described above, to some extent the accordion When the door is opened and the hinge opening angle θ of the rhombus-shaped portion 32 of the hinge 20 is reduced, the rotational moment is reduced, so that the operating force for moving the frame 18 is reduced, and the reaction force by the tension spring 34 is reduced. The accordion door can be opened by contracting the hinge 20 with a light force without being affected by the force. When the accordion door main body 14 is sufficiently contracted and the cord stopper 46 and the stopper case 42 come close to each other and engage with each other, the accordion door main body 14 maintains an open state.
[0024]
When the accordion door is manually opened, if the brake 40 does not generate braking force, braking is not applied and the operating load applied to the operator does not increase. Even if the braking force is generated, the operation speed of the operator is not so high, so that the braking force is not exerted so as to deteriorate the operability.
[0025]
As described above, in the present embodiment, when closing the accordion door, the accordion door is automatically closed by performing only a few operations such as releasing the stopper and moving it a little. At this time, since the braking force by the brake 40 acts, the extension speed of the hinge 20 is limited, and the closing speed of the accordion door can be within the allowable speed range.
[0026]
Since the brake 40 is disposed inside the accordion door body having a large accommodation space, the brake 40 is set without increasing the size of existing parts. The runner 12 and the rail 10 can also use existing general-purpose parts, and the brake 40 can be added later to the hinge 20. Therefore, an increase in manufacturing cost due to the addition of the brake 40 can be suppressed.
[0027]
In the accordion door of the above example, when the accordion door is moved in the closing direction, the accordion door is automatically closed and moved in the opening direction. However, the accordion door is not limited to this. For example, as shown in FIGS. 5 and 6, the tension spring 34 is spanned between a pair of pivots 26, 26 that are the apexes of the rhombus-shaped portion 32, and the pivots 26, 26 approach each other. By urging, the accordion door can be automatically closed when moved in the opening direction and manually moved when moved in the closing direction. In this case as well, the brake can be applied in the same manner, so that the braking force is generated by the brake 40 in conjunction with the contraction of the hinge 20, and no braking force is generated when extending in the closing direction. This can be realized by setting it in the opposite direction to the above.
[0028]
In the present invention, the example in which the tension spring 34 is used as the biasing means has been described. The tension spring 34 is good for balancing the thrust and the spring load, but an elastic body other than the tension spring 34 can also be used as a component of the biasing means. Instead of the tension spring, a compression spring may be stretched between one opposing pivot connection points, and the other opposite pivot connection points may be biased toward each other.
[0029]
【The invention's effect】
As described above, according to the present invention, when the accordion door body is automatically moved in the closing direction or the opening direction by the biasing means, the brake controls the extension or contraction of the hinge to decelerate. In addition, by setting the urging force of the urging means to a certain extent and decelerating with a brake, the maximum closing speed or maximum opening speed of the accordion door can be kept within a certain allowable range as a result. Even if the biasing force of the biasing means is not precisely adjusted depending on the type of the covering material, the opening / closing speed can be made moderate without being too fast or too slow.
[0030]
Since the brake is disposed inside the accordion door, the brake can be set without increasing the size of existing parts. Runners and rails can be used without existing parts, and can be used with accordion door parts that do not automatically close or open. can do.
[Brief description of the drawings]
FIG. 1 is an overall front view of an accordion door of the present invention.
2 is a plan view showing a contracted state of the hinge of FIG. 1 (a state in which an accordion door is open). FIG.
3 is a plan view showing an extended state of the hinge of FIG. 1 (a state in which an accordion door is closed). FIG.
FIG. 4 is an enlarged view of the vicinity of a brake, where (a) shows the extended state of the hinge and (b) shows the contracted state of the hinge.
FIG. 5 is a plan view illustrating a contracted state of a hinge according to another embodiment of the present invention.
FIG. 6 is a plan view showing an extended state of a hinge according to another embodiment of the present invention.
[Explanation of symbols]
10 rail 12 runner 14 accordion door body 34 tension spring (biasing means)
40 brakes

Claims (2)

The accordion door body (14) in which the decorative covering (22) is arranged before and after the extendable hinge (20) is supported by the runner (12), and the runner (12) travels on the rail (10). Then, the urging means (34) is provided, and the runner (12) is automatically moved in either the opening direction or the closing direction by the urging force of the urging means (34). ) In the accordion door
A brake (40) that operates in conjunction with expansion and contraction of the hinge (20 ) is installed between two points of the extendable hinge (20) , and the brake (40) is disposed inside the accordion door body (14). An accordion door characterized by that. The hinge (20) is adjacent to the pair of hinge pieces (24, 25) by a pivot (26) at the center of each other to form an X-shaped hinge element (28) adjacent to each other. The hinge pieces (24, 25) of the hinge element (28) are pivotally connected to each other to form a plurality of hinge elements (28) one after the other. The brake (40) 2. The accordion door according to claim 1, wherein the accordion door is spanned between two pivots (26, 26) of (20).

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