JP3004764U - Hinge for folding door - Google Patents

Abstract

(57) [Summary] [Structure] When the mounting members 3 and 4 mounted on the surfaces of the door bodies 2 and 2 to be connected to each other are stacked so that the surfaces are adjacent to each other, The mounting plate portion 12 and each mounting plate portion 12 on the side of the other mounting member 4 are fitted to each other in the circumferential direction so as to be displaced from each other. [Effect] Even if the mounting plate portion 12 has a sufficient thickness to secure the required mounting strength, the total thickness of the mounting plate portion 12 when the two mounting members 3 and 4 are stacked can be reduced, and therefore the mounting plate portion Even if the portion 12 is mounted on the surface of the door body 2, the gap d generated between the door bodies 2 and 2 when the door bodies 2 and 2 are placed in an overlapping state can be reduced, and the storage space of the door body 2 can be reduced accordingly. can do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hinge for a folding door, and more particularly to a hinge for a folding door that can reduce a gap when the door bodies connected by the hinge for the folding door are in an overlapping state.

[0002]

[Prior art]

 A folding door is constructed by connecting a plurality of doors with hinges so as to be openable and closable between the expanded state and the overlapped state.The hinges generally include a pair of mounting members that are mounted on the surface of the doors as a spindle. It is configured to be pivotable so that it can be opened and closed.

Further, each mounting member is formed with a projecting portion projecting to the back side thereof, an attaching plate portion is projected outside the projecting portion, and a hinge opening / closing mechanism is arranged on the front surface side of the space surrounded by the projecting portion. The applicant of the present application has previously proposed a hinge in which a protrusion is fitted in a recess formed on the surface of the door body and the mounting plate portion is attached to the surface of the door body.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional hinge, since the mounting member or the mounting plate portion is mounted on the surface of the door body, when the door bodies are placed in the overlapping state, the mounting member or the mounting plate portion is placed between the door bodies. There is a problem in that a gap corresponding to twice the thickness is generated, and the larger the gap, the larger the storage space for the door body.

In order to solve such a problem, it is conceivable to reduce the thickness of the mounting member or the mounting plate portion, but this causes a problem that the mounting strength of the hinge is reduced. It is also possible to form a shallow recess on the surface of the door body so that the mounting member and the mounting plate part just immerse, but if the surface material is removed as the door body, the required mounting strength cannot be secured in many cases. Even if possible, it is very costly to process a large-area concave portion having a flat bottom surface.

In view of the conventional problems described above, the present invention can reduce the gap between the door bodies when the door bodies connected by the hinges are overlapped with each other, and can secure a necessary mounting strength. The purpose is to propose.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a pair of mounting members (3, 4) and a pair of mounting members (3, 4) in claim 1 if reference numerals in the embodiments described below are shown in parentheses. The mounting member (3, 4) has a support shaft (5) for pivotally attaching the mounting member (3, 4) to each other so that the mounting member (3, 4) can be opened and closed. , 8) and a plurality of mounting plate portions (12) projecting outward from the protrusions (7,8), each mounting plate portion (12) having a mounting hole (6). When both mounting members (3, 4) are stacked so that their surfaces are adjacent to each other, each mounting plate part (12) on one mounting member (3) side and each mounting plate part (12) on the other mounting member (4) side The mounting plate portion (12) and the mounting plate portion (12) are fitted to each other in the circumferential direction.

In the second aspect, each mounting member (3, 4) has a circumferential continuous plate portion (9, 10) projecting outward from the projecting portion (7, 8), The continuous plate portions (9, 10) alternately have thin wall portions (11) and thick wall portions (12) projecting to the surface side in the circumferential direction, and the thick wall portions (12) have the mounting plate portions (12). Is adopted.

[0009]

【Example】

 Hereinafter, a hinge for a folding door according to an embodiment of the present invention will be described with reference to FIGS.

In FIGS. 1 to 4, 1 is a hinge, and the door bodies 2 and 2 are in a developed state shown in FIG. 2, a half-open V-shaped state shown in FIG. 5, and an overlapping state shown in FIG. It is connected to open and close freely.

The hinge 1 is configured by pivotally mounting a left mounting member 3 and a right mounting member 4 on a support shaft 5 so as to be openable and closable. On both mounting members 3 and 4, substantially semicircular projections 7 and 8 which become circular when both are expanded are projected to the back surface side, and when the hinge 1 is attached to the door body 2, these projections 7 and 8 are formed. 8 is fitted in a circular mounting recess 2a formed over both doors 2. Circumferentially continuous plate portions 9 and 10 are provided so as to project outward in the radial direction from the surface-side edges of the protrusions 7 and 8, respectively. On these circumferentially continuous plate portions 9 and 10, thin connecting plate portions 11 and thick mounting plate portions 12 projecting from the connecting plate portion 11 to the surface side are alternately arranged in the circumferential direction and left and right mounting members 3 are provided. , 4 in the overlapping state, the respective mounting plate portions 12 on the circumferential direction continuous plate portion 9 or 10 side overlap the connecting plate portion 11 on the other circumferential direction continuous plate portion 10 or 9 side. The mounting plate portions 12 are formed so as to fit in each other in the circumferential direction. The mounting plate portion 12 is formed with mounting holes 6 for mounting the mounting members 3 and 4 to the door body 2, respectively.

Cylindrical portions 13 and 14 are formed on the opposite edges of the two mounting members 3 and 4, respectively, and the support shaft 5 is inserted into the tubular portions 13 and 14 to rotatably connect the two mounting members 3 and 4. There is. A notch having an appropriate width is formed in the central portion of the cylindrical portion 13, and a cam 15 having a cam surface is arranged on the outer circumference. The cam 15 has the spindle 5 penetrating its shaft hole and is engaged and fixed to the left mounting member 3 as described later. The cam 15 is made of a synthetic resin material having excellent friction and wear characteristics and impact resistance such as nylon 66 and other polyamide resins.

Recesses 3a and 4a reaching the protrusions 7 and 8 with appropriate widths are formed in the central portions of the two mounting members 3 and 4 in the direction along the facing edges, and the bottom wall of the recess 3a of the left mounting member 3 is formed. The cam 15 is fixed by engaging an engagement step portion 15d formed on the lower portion of the cam 15 with the.

On the bottom wall of the recess 4 a of the right mounting member 4, the protrusion 16 having an inverted L-shaped cross section is formed so as to face each other with a proper interval in a direction directly intersecting the facing direction of the left and right mounting members 3, 4. Is provided, and a guide portion 17 that supports the movable body 18 movably in the perspective direction with respect to the cam 15 is formed by the pair of protrusions 16 and 16.

The movable body 18 is made of a synthetic resin material such as polyacetal resin having excellent friction and wear characteristics, and guide grooves 18 a that slidably engage with the guide portions 17 are formed on both sides of the movable body 18. It is movably supported by the cam 15 in the perspective direction. An engaging projection 19 which is in pressure contact with the cam surface of the cam 15 is provided at the tip of the movable body 18, and a spring accommodating hole 20 is provided at the rear end of the movable body 18. A spring 21 is interposed between the spring accommodating hole 20 and the protruding portion 8, and the movable body 18 is elastically pressed toward the cam 15 by the urging force of the spring 21.

The cam surface of the cam 15 includes an inclined cam surface 15a that biases the left and right mounting members 3 and 4 toward the same plane when the left and right mounting members 3 and 4 approach the same plane, and a half-open V-shaped state from the expanded state. The inclined cam surface 15b and the engaging step portion 15c are formed to urge the V-shaped state toward the V-shaped state and hold it in the V-shaped state.

In the hinge for a folding door having the above structure, as shown in FIG. 2, when the doors 2 and 2 are in the extended state, the hinge 1 has the left and right mounting members 3 and 4 in the same plane, and in that state. Since the engaging protrusion 19 of the movable body 18 of the right mounting member 4 is engaged with the inclined cam surface 15a of the cam 15 fixed to the left mounting member 3, it is urged toward that state. It will not be held and the doors 2 and 2 will not unexpectedly bend.

Next, when the doors 2 and 2 are closed from the expanded state toward the overlapping state, and the hinge 1 approaches the V-shaped state shown in FIG. 5 from the state shown in FIG. 2, the movable body 18 is moved. Engaging protrusion 19 engages with the inclined cam surface 15b and is urged to rotate toward the V-shaped state by the urging force of the movable body 18 by the spring 21, and the engaging protrusion 19 engages in the V-shaped state. The state is maintained by engaging with the stepped portion 15c. Thus, the two door bodies 2 and 2 are held in the V-shaped state, and the door body 2 can be stably run by running the door body 2 along the guide rail (not shown) in that state.

Next, when the outer surfaces of both door bodies 2 and 2 are strongly pushed in a substantially vertical direction, the engaging projection 19 of the movable body 18 gets over the engaging step 15c, and as shown in FIG. Both attachment parts 3 and 4 will be in an overlapping state. At this time, each mounting plate portion 12 on the circumferential continuous plate portion 9 side overlaps with the connecting plate portion 11 on the circumferential continuous plate portion 10 side, and each mounting plate portion 12 on the circumferential continuous plate portion 10 side is mounted on the circumferential continuous plate portion 10. The attachment plate portions 12 on the side of the portion 9 are overlapped with each other, and the respective attachment plate portions 12 are fitted to each other in the circumferential direction while being in conflict with each other. Therefore, even if the mounting plate 12 is thick enough to secure the required mounting strength, the mounting plate 12 overlaps the thin connecting plate 11, so that the gap d between the door bodies 2 and 2 is reduced. it can. Therefore, even if the mounting plate portion 12 of the mounting members 3 and 4 is mounted on the surface of the door body 2, the gap d generated between the door bodies 2 and 2 when the door bodies 2 and 2 are overlapped can be reduced. Therefore, the storage space for the door body 2 can be reduced accordingly.

Further, since the semi-circular projecting portions 7 and 8 which become circular when the both mounting members 3 and 4 are deployed are projected to the back surface side, when the hinge 1 is mounted on the door body 2, both door bodies are attached. By forming a circular mounting recess 2a over 2 and fitting the protrusions 7 and 8 of both mounting members 3 and 4, the hinge 1 can be accurately positioned and complicated position adjustment work must be performed. The hinge 1 can be attached with good workability.

The hinge for a folding door according to the present invention is not limited to the specific configuration example shown in the above embodiment, but can be configured in various modes. For example, in the above-described embodiment, the circumferential continuous plate portions 9 and 10 having the thin connecting plate portion 11 and the thick mounting plate portion 12 are provided outside the protruding portions 7 and 8, but only the mounting plate portion 12 is provided. May be formed at appropriate intervals in the circumferential direction. However, it is preferable in terms of strength to provide the connecting plate portion 11 to form the circumferentially continuous plate portions 9 and 10.

In the above embodiment, the recesses 3a and 3b are formed in the mounting members 3 and 4, and the opening / closing mechanism including the cam 15, the movable body 18 and the spring 21 is housed and arranged. It can also be applied to hinges that do not have such a mechanism.

[0023]

[Operation and effect of the device]

 The hinge for the folding door of the present invention can be implemented as described above, and when the mounting members mounted on the surfaces of both door bodies to be connected to each other are stacked so that the surfaces are adjacent to each other, one mounting Since each mounting plate part on the member side and each mounting plate part on the other mounting member side are fitted to each other in the circumferential direction, the mounting plate part is ensured to have a required mounting strength. However, the total thickness of the mounting plate part when both mounting members are stacked can be reduced, so even if the mounting plate part is mounted on the surface of the door body, the door bodies will be in an overlapping state. Sometimes the gap between the doors can be reduced, and the storage space for the doors can be reduced accordingly.

Further, as described in claim 2, there is provided a circumferential continuous plate portion alternately having a thin portion and a thick portion projecting to the surface side in the circumferential direction, and the thick portion is used as the mounting plate portion. According to this structure, the mounting plate portions are connected by the thin-walled portions, which is advantageous in terms of strength, and the thin-walled portions overlap the mounting plate portions, so that the gap between the door bodies can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a hinge for a folding door according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a left sectional view of FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

5 is a sectional view similar to FIG. 2 of the hinge when the door body is in a V-shape.

FIG. 6 is a cross-sectional view similar to FIG. 2 and a circumferential cross-sectional view of the circumferential direction continuous plate portion in the hinge when the door bodies are in the overlapping state.

[Explanation of symbols]

 1 Hinge 3 Mounting member 4 Mounting member 5 Support shaft 6 Mounting hole 7 Projection part 8 Projection part 9 Circumferential continuous plate part 10 Circumferential continuous plate part 11 Thin connecting plate part 12 Thick mounting plate part

Claims (2)

[Scope of utility model registration request] 1. A pair of mounting members (3, 4) and both mounting members.
(3, 4) has a support shaft (5) that pivotally connects them to each other in an openable and closable manner, and each mounting member (3, 4) has a substantially semicircular protrusion (7, 8) protruding to the back side. And a plurality of mounting plate portions (12) extending in the circumferential direction from the protruding portions (7, 8), each mounting plate portion (12) having a mounting hole (6). One mounting member when both mounting members (3, 4) are stacked so that their surfaces are adjacent to each other.
A hinge for a folding door, in which each mounting plate portion (12) on the (3) side and each mounting plate portion (12) on the other mounting member (4) side are fitted in the circumferential direction in a mutually inconsistent manner. 2. Each of the mounting members (3, 4) has a circumferential continuous plate portion (9, 10) projecting outward from the protrusion (7, 8), and the circumferential continuous plate portion (9, 10). The thin wall portion (11) and the thick wall portion (12) protruding to the surface side are alternately arranged in the circumferential direction, and the thick wall portion (12) forms the mounting plate portion (12). The hinge for a folding door according to Item 1.