JP5165004B2 - Folding door device - Google Patents

Description

  The present invention relates to a folding door device that can be used as means for opening and closing a storage space in a building.

  As described in Patent Document 1, this type of folding door device has an outer side of one of the folding doors formed by connecting the inner sides of the two doors so as to be foldable by a center hinge. A fixed hinge is pivotally supported to open and close to a fixed position, and the outer side of the other door body is pivotably supported by a movable body that engages with a slide guide rail disposed along the folding door opening and closing direction. Configured. Thus, when an intermediate shelf is installed in the storage space where the folding door opens and closes, it is disclosed in Patent Document 1 that the slide guide rail is laid on the front edge of the intermediate shelf. It has been well known.

JP-A-8-303105

  However, as described in Patent Document 1, in this type of conventional folding door device, the position fixing hinge that pivotally supports one side of the folding door is provided on the side wall portion of the storage space that is opened and closed by the folding door. Because of the mounting structure, at least the side wall portion on the side where the position fixing hinge is mounted among the side wall portions around the storage space is strong enough to attach the position fixing hinge firmly, and the position fixing hinge is accurate. If a vertical surface that can be attached well is required and these requirements are not satisfied, a column member is attached to at least the side wall portion on the side where the position fixing hinge is attached, among the side wall portions around the storage space. In addition, it is necessary to increase the accuracy of the reinforcement and the hinge mounting surface, which is not only costly but also has a risk of narrowing the frontage of the storage space.

  The present invention proposes a folding door device capable of solving the above-mentioned conventional problems, and the folding door device according to the present invention is the same as the embodiment described later. In order to facilitate understanding of the relationship, the reference numerals used in the description of the embodiment are shown in parentheses, and the inner sides of the two single doors (9A, 9B) are connected by the center hinge (10). The outer side of one door unit (9A) of the folding door (1) that is foldably connected is pivotally supported by a position fixing hinge (11) so that it can be opened and closed, and the other door body (9B). In the folding door device that is pivotably supported by the movable body (13) that engages with the slide guide rail (8) disposed along the folding door opening / closing direction, the folding door (1 In the storage space (6) that is opened and closed by an intermediate shelf, an intermediate shelf (7) located at the intermediate height of the folding door (1) is installed. Has a configuration in which a slide guide rail the position fixing hinges to the front edges (11) (8) is mounted in the shelf (7).

  When carrying out the present invention, specifically, as described in claim 2, between the lower end of the door unit (9A) having the position fixing hinge (11) and the floor surface (2), A floor-side position fixing hinge (15) having a vertical supporting shaft (19) concentric with the vertical supporting shaft (11a) of the position fixing hinge (11) can be interposed.

  Further, as defined in claim 3, the intermediate shelf (7) comprises a shelf plate (36) and a support member (37) fixed to the lower side of the front side of the shelf plate (36). The position fixing hinge (11) can be attached to the front surface of the support member (37), and the slide guide rail (8) can be attached to the lower side of the support member (37).

  Further, as defined in claim 4, the position fixing hinge (11) is embedded in a bearing member (38) attached to the front side of the intermediate shelf (7) and the back surface of the door unit (9A) and An embedded member (39) having a recessed portion (39a), a tip bearing portion (38a) of the bearing member (38) that is loosely fitted in the recessed portion (39a) of the embedded member (39), and the embedded member ( 39) and a vertical support shaft (11a) that is relatively rotatable. In this case, as described in claim 5, the bearing member (38) includes an L-shaped mounting plate (41) mounted on the front side of the intermediate shelf (7), and the mounting plate (41). And a bearing component (42) that is screwed to the tip of the shaft to form the tip bearing (38a), and the embedded member (39) is a door as claimed in claim 6. This inner fitting member is composed of an outer case member (46) fitted into the recess (45) of the single body (9A) and an inner fitting member (47) fitted into the outer case member (46). (47) is a U-shaped portion (48) that fits inside the outer case member (46), and a single door (48) provided continuously from both ends of the U-shaped portion (48) and outside the outer case member (46). 9A) and a pair of mounting plate portions (49) screwed to the back surface, and the vertical support shaft (11a) is formed on both sides of the U-shaped portion (48) of the inner fitting member (47). Can be installed between walls (48a, 48b)

  According to the configuration of the present invention described in claim 1, since the hinge for fixing the position of the folding door is not attached to the side wall portion of the storage space as in the prior art, the strength and verticality of the side wall portion of the storage space can be improved. Folding doors can be attached without being affected at all, and it is not necessary to attach another pillar member etc. to the side wall of the storage space for mounting the position fixing hinge. There is no fear of narrowing.

  In addition, when a plurality of intermediate shelves are installed, one side of the folding door can be supported on the intermediate shelves of each stage via a position fixing hinge. However, one intermediate shelf can be used regardless of the number of intermediate shelves. When the folding door is pivotally supported via the position fixing hinge, a large torsional load acts on the position fixing hinge even if the free side of the folding door is supported by the slide guide rail. However, according to the structure of Claim 2, the position of the lower end of the door unit provided with the position fixing hinge is restricted to a fixed position by the fulcrum shaft of the floor side position fixing hinge interposed between the floor surface. Therefore, a large torsional load does not act on the position fixing hinge, and the folding door can be smoothly opened and closed, and the service life of the position fixing hinge can be prolonged.

  Further, according to the structure of claim 3, the position fixing hinge can be easily and without difficulty mounted without using a thick plate as the intermediate shelf, and the slide guide rail can be attached to the intermediate shelf. It is also easy to embed in the lower surface of the.

  Furthermore, according to the configuration of claim 4, the fulcrum shaft of the position fixing hinge, that is, the vertical support shaft can be arranged in the region of the thickness of the single door, and the closed folding door and the front edge of the intermediate shelf Can be narrowed. In other words, it is possible to sufficiently secure the surface area of the intermediate shelf by sufficiently bringing the front edge of the intermediate shelf close to the back surface of the closed folding door. In this case, according to the configuration described in claim 5, the number of parts is increased as compared with the case where the bearing portion is integrally bent and connected from the front end of the L-shaped mounting plate in plan view. The durability can be increased by increasing the strength. Moreover, according to the structure of Claim 6, in the state which made the vertical support shaft which is a fulcrum shaft of a position fixing hinge penetrate between the both-sides wall parts of the U-shaped part of an inner fitting member, this inner fitting member The vertical support shaft can be positioned simply by fitting the U-shaped portion of the inner case member into the outer case member, and the outer case member can be positioned on the inner fitting member without being screwed to the door alone. By screwing the pair of attachment plate portions to the door alone, the door is fixed together with the inner fitting member. Therefore, the outer case member and the inner fitting member have a double structure, but it is not necessary to fix the vertical support shaft to the inner fitting member or the outer case member, and the entire recessed portion formed on the back surface of the door unit is removed. Since it can cover with an outer case member, the recessed part formed in the back surface of a door simple substance can be made inconspicuous.

FIG. A is a cross-sectional plan view showing a state in which the folding door is unfolded and the storage space is closed, and FIG. It is a cross-sectional top view which shows the state which folded the folding door and opened the storage space. It is the partially cutaway rear view which looked at the folding door of FIG. 1A from the inner side of storage space. FIG. 1A is a partially cutaway longitudinal side view at the position of the folding door position fixing hinge of FIG. 1A, and FIG. B is a partially cutaway longitudinal side view of the folding door of FIG. 1A at the movable body position. It is a rear view of the principal part which shows a floor side position fixed hinge. It is a vertical front view of the principal part which shows a floor side position fixed hinge. It is a vertical side view of the principal part which shows a floor side position fixed hinge. It is a cross-sectional top view of the principal part which shows a floor side position fixed hinge. Fig. A is a rear view showing the case body of the floor-side position fixing hinge, and Fig. B is a front view showing the case lid portion of the floor-side position fixing hinge. It is a vertical side view in the decomposition state of a floor side position fixed hinge. It is a cross-sectional top view in the decomposition | disassembly state of a floor side position fixing hinge. It is a cross-sectional top view of the principal part which shows a position fixing hinge. It is a vertical side view of the principal part which shows a position fixing hinge. It is a rear view of the principal part which shows a position fixing hinge. It is a cross-sectional top view in the decomposition | disassembly state of a position fixing hinge. It is a vertical side view in the decomposition | disassembly state of a position fixing hinge. It is a vertical side view of the principal part which shows the hinge between a movable body and a door simple substance. It is a cross-sectional top view of the principal part which shows the hinge between a movable body and a door simple substance. It is a rear view of the principal part which shows the hinge between a movable body and a door simple substance. It is a vertical rear view in the decomposition state of the hinge between a movable body and a door simple substance. It is a vertical side view of the principal part which shows the hinge between a movable body and a door simple substance. It is a cross-sectional top view in the decomposition | disassembly state of the hinge between a movable body and a door simple substance. It is a cross-sectional top view of the hinge between a movable body and a door simple substance.

  1 to 4, reference numeral 1 denotes a folding door that opens and closes an opening of a storage space 6 surrounded by a floor surface 2, left and right side walls 3, 4, and a ceiling surface 5. An intermediate shelf 7 is installed in the storage space 6 at an intermediate height of the folding door 1. A linear slide guide rail 8 is formed below the front side of the intermediate shelf 7 along the opening and closing direction of the folding door 1. Is laid. The folding door 1 is formed by connecting the inner sides of two single doors 9A and 9B by a plurality of upper and lower center hinges 10 (three in the illustrated example) so that they can be folded and unfolded. Since the center hinge 10 is conventionally well-known, illustration and description of the structure are omitted.

  The outer side of one door unit 9A of the folding door 1 is attached to the front side of the intermediate shelf 7 by one position fixing hinge 11, and the outer side of the other door unit 9B of the folding door 1 is attached to the intermediate shelf 7 side. A movable body 13 that engages with the slide guide rail 8 and is movable in the opening and closing direction of the folding door 1 is connected via a hinge 14 so as to be relatively swingable. A floor-side position fixing hinge 15 having a vertical support shaft concentric with the vertical support shaft 11a of the position fixing hinge 11 is interposed between the lower end portion of the outer side of the door unit 8 and the floor surface 2. Yes. 1A, as shown in FIG. 1A, when the folding door 1 is in the unfolded closed position, the gap between the outer side of the door unit 9A and the side wall 3 and the outer side of the door unit 9B and the side wall 4 Attached to both side walls 3 and 4 (preferably manufactured from an elastic material) in order to make the gap between them oblique and make it difficult to look directly into the storage space 6 from the outside and prevent the fingers from being caught. ) A ridge member.

  As shown in FIG. 1, the folding door 1 and the slide guide rail 8 in an unfolded state that closes the storage space 6 are parallel to each other in a plan view, and the two single doors 9 </ b> A and 9 </ b> B constituting the folding door 1. The horizontal distance L1 between the vertical support shaft 11a of the position fixing hinge 11 and the fulcrum shaft of the center hinge 10 is equal to the vertical support shaft of the hinge 14 between the movable body 13 and the door unit 9B. 14a and the vertical support shaft 11a of the position fixing hinge 11 enter the inside of the outer side of the door unit 9A so as to be shorter than the horizontal distance L2 between the fulcrum shaft of the center hinge 10 and the vertical of the hinge 14 The support shaft 14a is brought close to the outer side of the door unit 9B.

  Next, the structure and operation of the floor-side position fixing hinge 15 will be described with reference to FIGS. The floor-side position fixing hinge 15 includes a main body 16 attached to the door unit 9 </ b> A and a floor-side member 17 attached to the floor surface 2. The main body 16 is composed of a case 18, a vertical support shaft 19 housed in the case 18, and a rotating body 21a and a rotation operation shaft 21b that are interlocked and connected via bevel gears 20a and 20b. The mounting plate 24 includes a front-rear direction adjusting mounting hole 22 and a left-right direction adjusting mounting hole 23, and a bearing cylinder 25 fixedly projecting from the top end of the mounting plate 24. The case 18 of the main body 16 includes a case main body 26 provided with a protruding projecting plate portion 26 a around the lower side and a plurality of connecting screws 27 in a state of being overlapped with the case main body 26. And a case lid portion 28 coupled and integrated with each other. The vertical support shaft 19 protrudes integrally and concentrically upward from the large-diameter columnar portion 19a and a large-diameter columnar portion 19a that is held between the case main body 26 and the case lid portion 28 so as to be movable up and down in the axial direction. It is composed of a provided screw shaft portion 19b and a fulcrum shaft portion 19c that is integrally protruded downward and concentrically from the large-diameter columnar portion 19a. The cylinder body 25 is fitted so as to be relatively rotatable. Reference numeral 29 denotes a bush, which is interposed between the large-diameter cylindrical portion 19a and the bearing cylinder 25 so as to be loosely fitted to the fulcrum shaft portion 19c.

  The large-diameter cylindrical portion 19a of the vertical support shaft 19 is provided with a rotation-preventing pin 31 that fits into a vertical hole 30 provided in the case lid portion 28, and the vertical support shaft 19 is vertical. Only the vertical movement in the axial direction is possible. Thus, the rotating body 21a integrally provided with the bevel gear 20a has a female screw hole 32 concentrically, and is screwed into the screw shaft portion 19b of the vertical support shaft 19 in the female screw hole 32. A rotation operation shaft 21b that is integrally held between the case main body 26 and the case lid portion 28 so as to be able to rotate only and is engaged with the bevel gear 20a is provided in a shaft hole 26b provided in the case main body 26. The rotary operation shaft 21b is inserted and supported in a horizontal direction so as to be able to rotate only from the inside, and the operation tool fitting hole 21c is provided on the end surface thereof. Note that the upper end portion of the bearing cylinder 25 on the floor-side support member 17 side can be relatively rotated and moved in the axial direction relative to the lower end of the case 18 across the case main body 26 and the case lid portion 28. Large-diameter holes 26c and 28a that fit inside are formed.

  The case 18 of the floor-side position fixing hinge 15 having the above-described configuration has a vertical support shaft 19 inside that is concentric with the vertical support shaft 11a of the position fixing hinge 11 attached to the intermediate height of the door unit 9A. The fulcrum shaft portion 19c is attached to the back side of the lower side of the door unit 9A so that it protrudes from the lower end of the door unit 9A. That is, on the back side of the lower side of the door unit 9A, a recessed portion 33 into which the portion excluding the mounting overhanging plate portion 26a of the case 18 is fitted is engraved, and the case 18 is inserted into the recessed portion 33. In a state where the lower end of the case 18 and the lower end of the door unit 9A are substantially flush with each other, the mounting overhanging plate portion 26a has a plurality of mounting screws 34 on the back surface of the door unit 9A. It is fixed by. On the other hand, the floor-side member 17 of the floor-side fixed hinge 15 is configured such that a fulcrum shaft portion 19c of a vertical support shaft 19 protruding downward from the lower side of the case 18 is fitted to the bearing cylinder 25 and the bearing cylinder. With the upper end of the body 25 fitted into the large-diameter holes 26c, 28a at the lower end of the case 18, the mounting plate 24 penetrates the front-rear direction adjusting mounting hole 22 and the left-right direction adjusting mounting hole 23, respectively. With the mounting screws 35a and 35b, the position is adjusted on the floor 2 in both the front, rear, left and right directions.

  According to the floor-side position fixing hinge 15 having the above-described configuration, the rotation operation shaft 21b is rotated forward and backward from the back side of the door unit 9A using the operation tool fitting hole 21c at the tip of the rotation operation shaft 21b. The rotating body 21a can be rotated forward and backward in any direction via the bevel gears 20a and 20b. Since the rotating body 21a is screwed into the threaded shaft portion 19b of the vertical support shaft 19 which cannot rotate, in the female screw hole 32, the bearing cylinder 25 of the floor member 17 is rotated by forward and reverse rotation of the rotating body 21a. The door unit 9A itself, to which the case 18 supporting the rotating body 20a so as to rotate only is attached, moves up and down with respect to the screw shaft portion 19b of the vertical support shaft 19 supported so as to be able to rotate only. Become. In other words, the height of the folding door 1 relative to the floor surface 2 can be adjusted by the floor-side position fixing hinge 15.

  Next, the structure of the position fixing hinge 11 will be described with reference to FIGS. The intermediate shelf 7 to which the position fixing hinge 11 is attached includes a shelf plate 36 and a support member 37 made of a square member attached to the lower side of the front side. Thus, the position fixing hinge 11 includes the bearing member 38 attached to the front surface of the support member 37, the embedded member 39 embedded in the back surface of the door unit 9A and having the recessed portion 39a, and the recessed portion of the embedded member 39. It is comprised from the vertical support shaft 11a which connects the front-end | tip bearing part 38a of the said bearing member 38 loosely fitted to the part 39a, and the said embedded member 39 so that relative rotation is possible.

  The bearing member 38 includes a mounting plate 41 made of a metal plate having an L shape in plan view, which is attached to the front side of the intermediate shelf 7, that is, the front surface of the support member 37 by a plurality of mounting screws 40, and the mounting plate 41. It is comprised with the synthetic resin bearing part 42 attached to the front-end | tip part and forming the said front-end | tip bearing part 38a. Protruding pieces 41b and 41c sandwiching the bearing component 42 from above and below are bent at the tip of the vertical plate portion 41a protruding forward of the mounting plate 41, and the bearing component fitted between the protruding pieces 41b and 41c. 42 are coupled and integrated with the vertical plate portion 41a of the mounting plate 41 and the upper and lower projecting pieces 41b and 41c by coupling screws 43, respectively. The bearing part 42 is provided with a vertically-oriented through hole 44 through which the vertical support shaft 11a is inserted.

  The embedded member 39 includes an outer case member 46 made of a synthetic resin that is fitted into a recess 45 that is engraved on the back surface side of the door unit 9 </ b> A, and an inner fitting member 47 that fits into the outer case member 46. Yes. The outer case member 46 forms the oblong concave portion 39a having a vertically long rectangular shape. The outer case member 46 includes projecting ridge portions 46a and 46b that abut against the back surface of the door unit 9A on both sides, and are provided on both upper and lower inner end surfaces. The vertical support shaft 11a is formed with recesses 46c in which both upper and lower ends are loosely fitted, and the left and right side wall portions are integrally formed with notching retaining tongues 46d protruding obliquely inward. Yes. The inner fitting member 47 is formed by bending a band-shaped metal plate having a width that can be just fitted inside the outer case member 46, and has a U-shaped portion 48 fitted into the outer case member 46, A pair of mounting plate portions 49 are provided continuously from both ends of the U-shaped portion 48. Through holes 50 through which the vertical support shaft 11a is inserted are concentrically formed in the upper and lower side walls 48a and 48b of the U-shaped portion 48. The interval between the upper and lower side wall portions 48 a and 48 b of the U-shaped portion 48 in the inner fitting member 47 is sufficiently wider than the vertical height of the tip bearing portion 38 a in the bearing member 38.

  The position fixing hinge 11 having the above-described configuration fits the tip bearing portion 38a (bearing component 42) of the bearing member 38 between the upper and lower side wall portions 48a and 48b of the inner fitting member 47 and penetrates the upper and lower side wall portions 48a and 48b. The U-shaped portion 48 of the inner fitting member 47 is fitted inside the outer case member 46 in a state where the vertical support shaft 11 a is inserted through the hole 50 and the through hole 44 of the bearing part 42. At this time, the upper and lower side walls 48a and 48b of the U-shaped portion 48 are adjacent to the upper and lower inner end surfaces of the outer case member 46, and the upper and lower ends of the vertical support shaft 11a protruding from the upper and lower side walls 48a and 48b are The vertical support shaft 11a is prevented from moving up and down with respect to the inner fitting member 47 by loosely fitting into recesses 46c formed on both upper and lower inner end faces of the outer case member 46. Further, in the process in which the U-shaped portion 48 is fitted into the outer case member 46, both sides of the U-shaped portion 48 face outward against the pair of left and right retaining tongues 46 d of the outer case member 46. When the U-shaped portion 48 is expanded to a depth adjacent to the inner bottom surface of the outer case member 46, the left and right pair of retaining tongue pieces 46d are elastically restored, and the tips of the U-shaped portion 48 are It protrudes to the outside and prevents the inner fitting member 47 from coming off from the outer case member 46. At this time, the upper and lower mounting plate portions 49 of the inner fitting member 47 are adjacent to the upper and lower surfaces of the outer case member 46 and project outward from the upper and lower ends of the outer case member 46.

  In the state where the bearing member 38 and the embedded member 39 are combined as described above, the bearing member 38 can move relative to the embedded member 39 within a certain range in the axial direction of the vertical support shaft 11a. As shown, when the vertical plate portion 41a of the mounting plate 41 of the bearing member 38 is oriented perpendicularly to the bottom surface of the recessed portion 39a of the embedded member 39, that is, the bottom surface of the U-shaped portion 48 of the inner fitting member 47. The position of the vertical support shaft 11a is such that the front end bearing portion 38a (bearing component 42) protruding from the front end of the vertical plate portion 41a at right angles laterally fits in the recessed portion 39a of the embedded member 39. The concave portion 39a is biased to one side in the width direction.

  The bearing member 38 assembled to the embedded member 39 is attached to the front side of the intermediate shelf 7, that is, the front surface of the support member 37 with a plurality of mounting screws 40 on the mounting plate 41. The embedded member 39 is fitted with the outer case member 46 in a recess 45 carved on the back surface side of the door unit 9A, and the pair of left and right projecting ridges 46a, 46b of the outer case member 46 are connected to the back surface of the door unit 9A. Abut. At this time, since the pair of upper and lower mounting plate portions 49 of the inner fitting member 47 protruding from both upper and lower ends of the outer case member 46 are adjacent to the back surface of the door unit 9A, the mounting plate portions 49 are respectively attached to the mounting screws 51. By fixing to the door unit 9A, the attachment of the embedded member 39 to the door unit 9A is completed. In the mounted state of the embedded member 39, the outer case member 46 is located between the inner fitting member 47 fixed to the door unit 9A by the mounting screws 51 in the pair of upper and lower mounting plate portions 49 and the recess 45 of the door unit 9A. It is fixed by pinching.

  Next, the structure of the movable body 13 and the hinge 14 interposed between the movable body 13 and the door unit 9B will be described with reference to FIGS. The slide guide rail 8 with which the movable body 13 is engaged includes a lateral groove-type rail portion 8a that opens to the front side, and a downward groove-type rail portion 8b that is formed in the upper half of the lateral groove-type rail portion 8a. Thus, the downward groove-type rail portion 8b is attached to the lower side of the support member 37 in a state of being embedded in the support member 37 of the intermediate shelf 7. Thus, the movable body 13 is fitted to the downward groove-type rail portion 8b of the slide guide rail 8 at both ends in the lengthwise direction of the square bar-like member 52 that is loosely fitted in the slide guide rail 8, and rotates around the vertical axis. The positioning rollers 53a and 53b are pivotally supported, and between the positioning rollers 53a and 53b, a support member 54 that rotates around the horizontal axis by being fitted to the horizontal groove-shaped rail portion 8a is pivoted on the rectangular member 52. It is comprised from the horizontal board 13a provided with the slider 55 which supports.

  The hinge 14 is configured by connecting a mounting member 56 attached to the back surface of the outer side of the door unit 9B and the tip of the movable body 13 so as to be relatively swingable by a vertical support shaft 14a. The front end of the movable body 13 is formed into a laterally U-shaped cross-sectional structure with a vertical plate portion 13b and a lower horizontal plate 13c that are integrally bent from a horizontal plate 13a that constitutes the movable body 13, and a pair of upper and lower A vertical support shaft 14a is vertically inserted and held between the horizontal plates 13a and 13c. The attachment member 56 includes a substrate 58 that is attached to the back surface of the outer side of the door unit 9 </ b> B by attachment screws 57, and a hinge-side member 59 that is detachable from the substrate 58. The board 58 is made of a synthetic resin, and is formed with a plate part 61 that is raised one step higher, forming a U-shaped gap 60 having a longitudinal cross section for inserting the hinge side member 59 between the back surface of the door unit 9B. The plate portion 61 is integrally formed with a retaining tongue piece 62 that protrudes into the gap 60.

  One hinge side member 59 is made of a metal plate formed in a U-shaped longitudinal section that can be inserted into the gap 60 having the U-shaped longitudinal section along the back surface of the door unit 9B, and the flat plate portion 59a. Is provided with an engagement hole 63 with which the tongue piece 62 for retaining is engaged, and in the rear end portions of both side wall portions 59b and 59c, that is, in the gap portion 60 having a U-shaped longitudinal section on the substrate 58 side. A rear end portion that protrudes from the plate portion 61 on the substrate 58 side when inserted to the back is formed in a bearing portion 59d through which the vertical support shaft 14a is vertically inserted.

  The board 58 is attached to a predetermined position on the back surface of the door unit 9B with the mounting screw 57 so that the insertion direction of the hinge side member 59 into the gap 60 having a U-shaped longitudinal section is perpendicular to the outer side of the door unit 9B. The hinge side member 59 pivotally connected to the movable body 13 with the slider 55 fitted to the slide guide rail 8 via the vertical support shaft 14a is connected to the plate portion 61 of the substrate 58 and the back surface of the door unit 9B. Are inserted into the cavity 60 having a U-shaped longitudinal section formed between the two. At this time, the retaining tongue 62 on the side of the substrate 58 is pushed outward against the elasticity by the flat plate portion 59 a of the hinge side member 59, and the flat plate portion 59 a of the hinge side member 59 is pushed to the back end of the gap portion 60. , The retaining tongue piece 62 is elastically restored and fits into the engagement hole 63 of the hinge side member 59 to prevent the hinge side member 59 from moving in the direction of exiting the gap 60. To do. An operation protrusion 62a for detaching the retaining tongue piece 62 from the engagement hole 63 of the hinge side member 59 against the elasticity is connected to the tip of the retaining tongue piece 62. When the door unit 9B is separated from the movable body 13 side, the retainer tongue piece 62 is separated from the engagement hole 63 of the hinge side member 59 against the elasticity by the operation projection 62a, thereby the substrate 58. The hinge side member 59 can be pulled out from the side.

  As described above, the intermediate height position corresponding to the intermediate shelf 7 on the back side of the outer side of the door unit 9A of the folding door 1 is pivotally supported on the front side of the intermediate shelf 7 by the position fixing hinge 11, and the folding is performed. The lower end of the outer side of the door 1 is pivotally supported on the floor surface 2 by a floor-side position fixing hinge 15 having a vertical support shaft 19 concentric with the vertical support shaft 11 a of the position fixing hinge 11. By attaching the intermediate height position corresponding to the intermediate shelf 7 on the back side of the outer side of the door unit 9B to the movable body 13 that engages with the slide guide rail 8 via the hinge 14, the installation of the folding door 1 is completed. To do. At this time, in the position fixing hinge 11, as shown in FIGS. 13 and 14, the tip bearing portion 38 a (bearing component 42) of the bearing member 38 on the intermediate shelf 7 side is the vertical support shaft of the embedded member 39 on the door unit 9 A side. As shown in FIGS. 17 and 21, the hinge side member 59 on the door unit 9B side is movable in the hinge 14 between the movable body 13 and the movable body 13 in the vertical direction within a certain range with respect to 11a. The vertical support shaft 14a on the 13th side can move up and down within a certain range. Accordingly, when the position of the outer side of the door unit 9A of the folding door 1 is adjusted by rotating the rotation operation shaft 21b of the floor side position fixing hinge 15, the whole folding door 1 can be moved up and down in parallel. .

  Although the folding door 1 attached as described above is not shown in the drawing, it can be pulled out to the outside by using a handle or the like provided in the vicinity of the inner side of the single doors 9A and 9B. As shown in FIG. 1B, the folding door 1 can be opened while being folded from the deployed closed position shown. At this time, the door unit 9A is moved outward with the vertical support shaft 11a of the position fixing hinge 11 and the vertical support shaft 19 of the floor side position fixing hinge 15 as fulcrum shafts, and the outer side of the door unit 9B is a movable body. 13 is moved laterally along the slide guide rail 8 and is moved outward with the vertical support shaft 14a of the hinge 14 as a fulcrum shaft.

  As shown in FIG. 2, when the movable body 13 on the door unit 9B side is laterally moved to the open limit position and the door unit 9A of the folding door 1 and the door unit 9B overlap with each other, the intermediate shelf 7 is provided. The storage space 6 is fully opened. At this time, as explained based on FIG. 1A, the horizontal distance L1 between the vertical support shaft 11a of the position fixing hinge 11 and the fulcrum shaft of the center hinge 10 is the hinge between the movable body 13 and the door unit 9B. 14 is configured to be shorter than the horizontal distance L2 between the vertical support shaft 14a and the fulcrum shaft of the center hinge 10, so that when the folding door 1 is in the folded position as shown in FIG. The single units 9A and 9B are not symmetrical with respect to the opening / closing direction of the folding door 1 (the length direction of the slide guide rail 8) in plan view, and the inclination angle of the single unit 9B on the movable body 13 side is increased. That is, a virtual straight line in a plan view connecting the fulcrum shaft of the center hinge 10 and the vertical support shaft 14a of the hinge 14 on the movable body 13 side, and the opening / closing direction of the folding door 1 passing through the vertical support shaft 14a (the length of the slide guide rail 8). ) And the imaginary straight line in a plan view parallel to the vertical direction of the folding door 1 is 90 degrees or more, and the depression angle is the vertical support shaft 11a of the position fixing hinge 11 in the folded posture. Assuming that the interval in the direction parallel to the opening / closing direction of the folding door 1 (the length direction of the slide guide rail 8) between the vertical support shaft 14a of the hinge 14 on the movable body 13 side is equal, the door unit 9A , 9B becomes larger than the depression angle when folded symmetrically.

  As a result, as shown by an arrow F in FIG. 2, when the folding door 1 in the folding posture is pushed in the vicinity of the inner side of the door unit 9A on the position fixing hinge 11 side in the folding door closing direction, its acting force F is a component force f1 acting from the fulcrum shaft of the center hinge 10 toward the vertical support shaft 14a of the hinge 14 on the movable body 13 side of the folding door 9B, and a component force f2 acting in the closing movement direction of the folding door 1. The component force f2 acting in the closing direction of the folding door 1 becomes an acting force that moves the movable body 13 along the slide guide rail 8 in the closing door closing direction, and this component force f2 is the conventional folding force. Since it becomes larger than the door structure, the folding door 1 starts closing relatively smoothly. That is, even if the folding door 9B on the movable body 13 side is not operated to be pulled in the folding door closing direction, the vicinity of the inner side of the single door 9A on the position fixing hinge 11 side is pushed in the folding door closing movement direction as described above. Even in the case, the folding door 1 can be started to close relatively smoothly.

  When the movable body 13 reaches the closing limit position of the slide guide rail 8 and the folding door 1 is fully deployed as shown in FIG. 9B is in a state along one vertical plane parallel to the slide guide rail 8.

  The folding door device of the present invention can be effectively used as means for opening and closing the opening of the storage space when the storage space is built in the building.

DESCRIPTION OF SYMBOLS 1 Folding door 2 Floor surface 6 Storage space 7 Intermediate shelf 8 Slide guide rail 9A, 9B Single door 10 Center hinge 11 Position fixing hinge 11a, 14a, 19 Vertical support shaft 13 Movable body 14 Hinge 15 Floor side position fixing hinge 16 Main body 17 Floor member 36 Shelf plate 37 Support member 38 Bearing member 38a Tip bearing portion 39 Embedded member 39a Recessed recess portion 41 Mounting plate 42 Bearing component 46 Outer case member 46d Retaining tongue piece 47 Inner fitting member 48 C-shaped portion 49 Mounting Plate part 52 Square bar-like member 53a, 53b Positioning roller 54 Supporting roller 55 Slider 56 Mounting member 58 Substrate 59 Hinge side member 60 Vertical section U-shaped gap part 62 Retaining prevention tongue piece part 63 Engagement hole

Claims (6)

  The outer side of one of the folding doors, which is formed by connecting the inner sides of the two single doors so as to be foldable by a center hinge, is pivotally supported in a fixed position by a position fixing hinge, and the other door In a folding door device in which the outer side of the main body is pivotably supported by a movable body that engages with a slide guide rail disposed along the folding door opening / closing direction, in a storage space that is opened and closed by the folding door. Is a folding door device in which an intermediate shelf located at an intermediate height of the folding door is installed, and the position fixing hinge and the slide guide rail are attached to the front side of the intermediate shelf.   Between the lower end of the door unit having the position fixing hinge and the floor surface, a floor side position fixing hinge having a vertical support shaft concentric with the vertical support shaft of the position fixing hinge is interposed. The folding door device according to claim 1.   The intermediate shelf is composed of a shelf plate and a support member fixed to the lower side of the front side of the shelf plate, the position fixing hinge is attached to the front surface of the support member, and the slide guide rail is The folding door apparatus of Claim 1 or 2 attached to the lower side of a supporting member.   The position fixing hinge includes a bearing member attached to the front side of the intermediate shelf, an embedded member embedded in a back surface of the door unit and having a recessed portion, and the bearing member loosely fitted in the recessed portion of the embedded member. The folding door apparatus of any one of Claims 1-3 comprised from the vertical spindle which connects the front-end | tip bearing part and the said burying member so that relative rotation is possible freely.   The bearing member includes an L-shaped mounting plate that is attached to the front side of the intermediate shelf and a bearing component that is screwed to the tip of the mounting plate to form the tip bearing. The folding door device according to claim 4.   The embedded member is composed of an outer case member that fits into the recess of the door alone, and an inner fitting member that fits into the outer case member, and the inner fitting member fits into the outer case member. And a pair of mounting plate portions that are connected from both ends of the U-shaped portion and screwed to the back surface of the door unit outside the outer case member, and the vertical support shaft includes the inner fitting. The folding door device according to claim 4 or 5, wherein the folding door device is installed between both side walls of the U-shaped portion of the joint member.

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