JP2011122310A - Sliding door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively provide a sliding door device, which draws a sliding door near a door frame side when it is shifted to a closing position, in a simple and compact constitution without using a driving means etc. as a drive source. <P>SOLUTION: When the sliding door is shifted to the closing position, both guiding rollers 30 and 35 of upper guides G1 and G2 face a step portion 20 of a guiding rail portion 15c of a sliding door rail L. In this case, the sliding door leans on the sliding door rail L while being turnable in the depth direction of an opening in such a manner that a horizontal shaft (m) journaled in parallel with the opening/closing direction of the opening S serves as a supporting point. On the lower side of the sliding door, a door end-side guide roller 50 of a lower guide G3 is engaged with a guide groove 11; and a door tail-side guide roller 55 is in a position to be disengaged from the guide groove. Thus, the sliding door can also be turned in the depth direction of the opening in such a manner that the vertical shaft (n) of a guide link 40 rising in the height direction of the opening serves as a supporting point. Consequently, the self-weight makes the sliding door drawn near the depth-direction door frame side by swinging thereto in such a manner that the horizontal and vertical shafts serve as the supporting points, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is applied to a sliding door that opens and closes an entrance / exit of a building requiring airtightness such as a hospital, a music hall, a theater, etc. Especially when closed, when the sliding door moves to the closed position, the door frame side is further closed. It is related with the sliding door apparatus which draws in and closes.

  Conventionally, in this type of sliding door device, for example, a pressing device that pushes the upper end portion of the sliding door that is supported on the upper frame portion of the door frame toward the door frame side, and a plurality of pulling devices that further draw the entire sliding door toward the door frame side When the sliding door reaches the closed position when it is closed, the pressing device is operated, the pivot arm is rotated by the power cylinder or the like of the driving unit to push the upper end of the sliding door toward the door frame, and Actuating the device to drive the motor, rotating the pulling arm to lock it to the locking pin on the vertical frame side, and then pulling the pulling arm to the door frame side via the rack and pinion mechanism (See Patent Document 1).

JP-A-9-242419

  However, the above-described conventional sliding door device requires separate driving means such as a power cylinder and a motor as driving sources for the pressing device and the pulling device, respectively, and the pulling device includes a rack in addition to the driving motor. Since the drive transmission means such as a pinion mechanism is individually provided and it is necessary to assemble a plurality of such pulling devices between the vertical frame portion on the door end side and the vertical fence of the sliding door, the structure is entirely There was a problem that it was complicated and large, and the cost was significantly increased.

  SUMMARY OF THE INVENTION An object of the present invention is to realize a sliding door device that draws close to the door frame side when the sliding door moves to a closed position at a low cost with a simple and compact configuration without using a driving means or the like as a driving source.

  In order to achieve the object of the present invention, the invention described in claim 1 includes a sliding door D in which a guide groove 11 is recessed in the length direction on a lower end surface, as shown in the embodiment shown below. The sliding door rail L laid on the upper frame portion 10a is supported so as to be movable in the opening and closing directions X and Y, and when the sliding door D moves straight from the open position where it overlaps the door-side wall 10b to the closed position, A sliding door device A that pulls the sliding door D toward the door frame C and closes the opening S, and supports the door cart units T1 and T2 that pivotally support the door carts 24 and 25 and are mounted on the sliding door D. Upper guides G1 and G2 mounted on the sliding door D at a certain distance by pivotally supporting the rollers 30 and 35 at a certain interval, and the lower side of the sliding door D in the opening / closing direction X · A lower guide G3 for guiding to Y, and the sliding door rail L includes the door wheel 24 A guide rail portion 15c is provided in parallel with the traveling rail portion 15b with which the door 5 is engaged. When the sliding door D is in the closed position, the guide rails 30 and 35 on the door tip side and the door bottom side are provided on the guide rail portion 15c. A stepped portion 20 that is long enough to enter both sides is provided to form a stepped portion h that is one step lower, and the stepped portion 20 is fixed to the upper frame portion 10b toward the side away from the opening S, while the door unit T1. T2 is pivotally mounted in the depth direction Z perpendicular to the opening / closing direction X / Y of the opening S with the horizontal axis m pivotally supported in the opening / closing direction X / Y on the sliding door D as a fulcrum. The guides G1 and G2 pivotally support the guide rollers 30 and 35 at a position where an outer peripheral surface abuts on the guide rail portion 15c when the sliding door D is supported by the sliding door rail L, and the lower guide G3 Guide engaged with the guide groove 11 A guide link 40 pivotally supported on both ends of the rollers 50 and 55 is pivotally attached to the floor surface F with the longitudinal axis n as a fulcrum, and the sliding door D is in a closed position. The guide roller 50 on the door end side engages with the guide groove 11, while the guide roller 55 on the door bottom side is pulled out of the guide groove 11 and removed from the guide groove 11, the height of the opening S is increased. It is characterized by being erected in the vertical direction.

  According to a second aspect of the present invention, in the sliding door device A according to the first aspect, for example, as in the illustrated embodiment shown below, the sliding door rail L is configured to incline the door end side downward and the door frame C. It is characterized by being fixed to the upper frame portion 10c.

  According to a third aspect of the present invention, in the sliding door device A according to the second aspect, for example, as shown in the embodiment shown below, the sliding door D has a sealing material 45 having elasticity and a distal end piece 45a below. Attached in a state of projecting from the end surface, and moved to the closed position, the seal material 45 is used to close a gap between the floor surface F.

  According to a fourth aspect of the present invention, in the sliding door device A according to the second aspect, for example, as shown in the illustrated embodiment shown below, the sliding door D has a sealing means R for closing a gap between the floor F. The sealing means R includes an elastic sealing material 65 and a wire 66 for suspending the sealing material 65 with the tip piece 45a protruding from the lower end surface of the sliding door D. Such a suspension member, an urging spring 67 that constantly urges the sealing material 65 in a direction protruding from the guide groove 11, and when the sliding door D is in the closed position, the sliding door D and the floor surface F It is characterized by comprising height adjusting tools 68 and 69 for adjusting the suspended height position of the sealing material 65 according to the gap between them.

  According to the first aspect of the present invention, when the sliding door moves to the closed position, on the upper side of the sliding door, both of the guide rollers of the upper guide face the stepped portion of the guide rail portion of the sliding door rail. The sliding door leans against the sliding door rail so that it can rotate in the depth direction of the opening, with the horizontal axis pivotally supported parallel to the opening / closing direction of the opening as the fulcrum. While the door end side guide roller engages with the guide groove, the door bottom side guide roller is in a position where it has come out of the guide groove and removed, so that the vertical axis of the guide link standing in the height direction of the opening is a fulcrum, Since it can also rotate in the depth direction of the opening, it swings toward the door frame side in the depth direction of the opening by using its horizontal axis and vertical axis as a fulcrum due to its own weight, so that the sliding door moves to the closed position Then pull the sliding door to the door frame side That the sliding door device, without using a driving means and drive transmission means such as a motor or the like, it can be provided inexpensively with a simple and compact configuration.

  According to the invention described in claim 2, the sliding door rail is fixed to the upper frame portion of the door frame with the door tip side inclined downward, and does not include any driving means, and has a simple configuration utilizing the weight of the sliding door. Thus, when closed, the opening can be automatically closed by tilting the sliding door in the closing direction according to the inclination of the sliding door rail.

  According to the invention described in claim 3, while the sliding door rail is fixed to the upper frame portion of the door frame with the door tip side inclined downward, the sealing material is provided on the sliding door, and the front end piece thereof extends from the lower end surface. Because the sliding door is attached in a protruding state, the protruding tip piece does not move against the floor surface while the sliding door is tilted according to the inclination of the sliding door rail. The tip piece hits the floor surface and can reliably close the gap between the sliding door and the floor surface, and when closed, the detection mechanism that detects that the sliding door has reached the closed position and the sealing material based on the detection result A complicated mechanism such as a shutter mechanism for raising and lowering the door is not required, and the airtightness of the lower part of the sliding door can be realized at a very low cost by a simple configuration in which a sealing material is provided.

  According to the invention described in claim 4, when the sliding door is suspended, the suspension height position of the sealing material is adjusted in advance in accordance with the gap between the sliding door and the floor surface in the closed position, and the subsequent use. Sometimes, when the sliding door moves to the closed position according to the inclination of the sliding door rail, the tip piece touches the floor surface so that the gap between the sliding door and the floor surface is closed, so that the room where the sliding door is suspended, etc. Even if there is a difference in the size of the gap between the floor and the floor, the gap between the floor and the floor can be reliably sealed at the closed position of the sliding door regardless of the variation.

It is a perspective view which shows the sliding door structure to which the sliding door apparatus of this invention is applied in the drawing closed state of a sliding door. It is a perspective view which shows a sliding door rail. It is a disassembled perspective view which shows a doorwheel unit. (A) It is a disassembled perspective view of a door-end side cart unit, (B) It is a disassembled perspective view of a door bottom side cart unit. It is a disassembled perspective view which shows an upper guide. It is an assembly perspective view showing an upper guide. It is a disassembled perspective view which shows a lower guide. It is an assembly perspective view showing a lower guide. (A) It is a perspective view which shows the guide case with which a sliding door is equipped, (B) It is a perspective view which shows the roller insertion guide of a guide case. It is a perspective view which shows a sliding door structure in the fully open state of a sliding door. It is a front view which shows a sliding door structure in the fully open state of a sliding door. It is a top view which shows a sliding door structure in the fully open state of a sliding door. It is a side view which shows a sliding door structure in the fully open state of a sliding door. It is a perspective view which shows a sliding door structure in the state in the middle of closing of a sliding door. It is a front view which shows a sliding door structure in the state in the middle of closing of a sliding door. It is a top view which shows a sliding door structure in the state in the middle of closing of a sliding door. It is a side view which shows a sliding door structure in the state in the middle of closing of a sliding door. It is a front view which shows a sliding door structure in the drawing closed state of a sliding door. It is a top view which shows a sliding door structure in the drawing closed state of a sliding door. It is a side view which shows a sliding door structure in the drawing closed state of a sliding door. (A) The longitudinal cross-sectional view which shows the sealing means which block | closes the clearance gap between a sliding door and a floor surface in the accommodation state of a sealing material, (B) It is AA sectional drawing in the A figure. (A) The longitudinal cross-sectional view which shows the sealing means in the use condition which the sealing material protruded, (B) It is a bb sectional drawing in the A figure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a sliding door structure to which a sliding door device of the present invention is applied in a sliding closed state of the sliding door. The sliding door structure of the illustrated example supports the sliding door D so as to be movable in the opening and closing directions X and Y on the plate-like upper frame portion 10a of the door frame C, and in particular when closed, the sliding door D is provided by the sliding door device A of the present invention. When moving straight from the open position that overlaps the door-side wall 10b of the door frame C to the closed position, the sliding door D is pulled toward the door frame C and the opening S between the floor F and the door frame C is closed. It is configured.

  Therefore, the sliding door device A includes a sliding door rail L that moves the sliding door D in the opening and closing directions X and Y, a pair of door cart units T1 and T2 that are assembled to the upper end surface of the sliding door D, and a pair of upper portions that guide the upper side of the sliding door D. Guides G1 and G2 and a lower guide G3 for guiding the lower side of the sliding door D are provided.

  The sliding door D is made of wood and has a guide groove 11 recessed in the length direction of the lower end surface. The guide groove 11 is internally provided with an elongated guide case 12 (see FIG. 2) having a U-shaped cross section in accordance with the groove shape. The guide case 12 has a roller insertion guide 13 fitted in one side opening. The roller insertion guide 13 is provided with a fitting tube portion 13a having a rectangular tube shape that can be fitted to the guide case 12, and a guide plate portion 13b that is bent and opened at one end of the fitting tube portion 13a. .

  The guide case 12 is provided with an elongated sheet-like sealing material 45 on one side surface 12a (see FIG. 13). The sealing material 45 is made of an elastic material such as rubber or synthetic resin, and the tip piece 45a protrudes from the lower end surface of the sliding door D and is attached to the guide case 21 so as to be bent. Although not shown in the drawings, the sliding door D is suspended from the sliding door rail L along the upper side edge and the left and right side edges on the plate surface on the side facing the opening S, for example, rubber, synthetic resin, etc. An airtight material made of an elastic material is bonded.

  The sliding door rail L is provided with a protruding running rail portion 15b and a guide rail portion 15c in parallel with each other on one side edge of the long fixed portion 15a having a cross-sectional shape (see FIG. 3). 15c protrudes in a direction perpendicular to the traveling rail portion 15b, and is provided with a step portion 20 having a concave shape with a fixed length near one side in the longitudinal direction, and a step h lower than the step portion 20 is formed. As will be described later, the portion 20 is recessed in the guide rail portion 15c over a length that allows both of the guide rollers 30 and 35 of the upper guide G1 to enter when the sliding door D is in the closed position. The stepped portion 20 is directed to the side away from the opening S, and the door end side is inclined downward, and is fixed to the upper frame portion 10a and laid along the opening / closing directions X and Y.

  As shown in FIGS. 4 and 5, the door unit T1, T2 includes a fixed plate 16, first and second brackets 17, 18 that are pivotally attached to the fixed plate 16 and have different height sizes, and brackets. The horizontal axis m of the rotation fulcrum of 17 and 18 and the door wheels 24 and 25 pivotally attached to both brackets 17 and 18 are provided. The fixing plate 16 is provided with a notch 16a on one side edge of the metal plate. A hinge part 16b bent and raised in a tubular shape is formed on the other side edge. The brackets 17 and 18 are formed by bending a metal plate into an L shape, bending and forming tubular hinge portions 17b and 18b corresponding to the hinge portion 16b on one side of the mounting plate portions 17a and 18a, and supporting plate portions 17c and 18c on the other side. One end of the axle 21 is fitted to and supported by the bearing hole 19 of 18c, while the other end of the axle 21 is fitted to the boss hole to pivotally support the door wheels 24 and 25. In the door cart unit T2, the second bracket 18 is bent at a height of the support plate portion 18c by bending a metal plate longer than the first bracket 17 in accordance with the inclination angle of the sliding door rail L laid on the upper frame portion 10a. Is forming high. Further, as shown in FIG. 1, the support plate portion 18 c is provided with a receiving member 23 on which the abutment plate 22 of the air brake E fixed to the upper frame portion 10 a abuts.

  Accordingly, the first door unit T1 is assembled by penetrating the horizontal axis m into the hinge portions 16b and 17b and pivotally connecting the bracket 17 to the fixed plate 16 so that the horizontal axis m is parallel to the sliding door D. Then, the fixing plate 16 is placed on the door end side of the upper end surface 14a of the sliding door D, and is fixed to the notch hole 16a through a suspension bolt. The second door cart unit T2 is assembled by inserting the horizontal axis m into the hinge portions 16b and 18b and pivotally connecting the bracket 18 to the fixed plate 16 so that the horizontal axis m is parallel to the sliding door D. The fixing plate 16 is placed on the door bottom side of the upper end surface 14a of the sliding door D, and is fixed to the notch hole 16a through a suspension bolt.

  As shown in FIGS. 6 and 7, the upper guides G 1 and G 2 include guide rollers 30 and 35, a roller shaft 29, an attachment cover 28 for the guide rollers 30 and 35, and a mounting table 27. The mounting cover 28 is formed by bending a metal plate into a hat shape as a whole, forming fixed flange portions 28b extending in an L shape at both ends of the U-shaped main body portion 28a, and bearing holes 31 on the top surface 28c of the main body portion 28a. Provided. The bearing hole 31 is formed near the one side edge of the top surface 28c of the main body 28a. The mounting table 27 is formed by bending a metal plate into a U shape that is one step lower than the main body portion 28a of the mounting cover 28, and corresponding to the bearing hole 31 on the mounting cover 28 side, with a shaft insertion hole closer to one side edge of the top surface 27a. 32 is provided.

  Therefore, the upper guides G1 and G2 are fitted with the guide rollers 30 and 35 and the mounting table 27 in the main body 28a of the mounting cover 28, and then the one-step narrower tip shaft portion 29a of the roller shaft 29 is placed on the mounting table 27. The shaft insertion hole 32 is passed through the central shaft hole 33 of the guide roller 30 to engage with the bearing hole 31 of the mounting cover 28, and the guide roller 30 is placed at a predetermined height position between the mounting table 27 and the mounting cover 28. The roller shaft 29 is rotatably supported around the roller shaft 29 in a state where a part of the outer peripheral portion protrudes on one side. Among them, as shown in FIG. 1, the upper guide G1 is placed on the upper end surface 14a of the sliding door D with the adjustment plate 34 having a predetermined thickness sandwiched between the door bottoms of the door unit T1 and screwing the fixing collar portion 28b. To do. The door-side upper guide G1 uses a plate material thinner than the adjustment plate 36 of the door-side upper guide G2 corresponding to the inclination angle of the sliding door rail L as the adjustment plate 34. The height position is adjusted to be lower than the door end side guide roller 35, and is set to a height position at which the door end side guide roller 30 contacts the guide roller portion 15c.

  On the other hand, the upper guide G2 is located on the upper end surface 14a of the sliding door D at a certain distance corresponding to the length of the stepped portion 20 of the sliding door rail L between the guide roller 35 and the guide roller 30 of the upper guide G1. Then, the door is placed on the door end side of the door pulley unit T2 with the adjustment plate 36 having a predetermined thickness interposed therebetween, and the fixing collar portion 28b is screwed. The upper guide G2 on the door bottom side is guided by using a plate material thicker than the adjustment plate 34 of the upper guide G1 on the door tip side, corresponding to the inclination angle of the sliding door rail L, as the adjustment plate 36. The height position of the roller 35 is adjusted to be higher than that of the guide roller 30 on the door end side, and the guide roller 35 on the door bottom side is also set to a height position where it abuts on the guide roller portion 15c.

  Therefore, in the sliding door device A, the protruding side of the guide rollers 30 and 35 of the upper guides G1 and G2 is directed to the sliding door rail L, and the door 25 is placed on and engaged with the traveling rail portion 15b, and the sliding door D is moved to the sliding door rail L. Thus, the sliding door D is supported by the sliding door rail L so as to be movable in the opening and closing directions X and Y while the guide rollers 30 and 35 are in contact with the guide rail portion 15c, and the door units T1 and T2 are supported. Is supported so as to be rotatable in a depth direction Z perpendicular to the opening / closing directions X and Y of the opening S. Therefore, when the sliding door D is suspended from the sliding door rail L, the brackets 17 and 18 are supported by the weight of the sliding door D in a state where the brackets 17 and 18 lean against the sliding door rail L with the horizontal axis m tilted about the fulcrum.

  As shown in FIGS. 7 and 8, the lower guide G3 includes a mounting base 39, a guide link 40, a vertical axis n of the pivot point of the guide link 40, a first guide roller 50, and a second guide roller 55. Prepare. The mounting base 39 is an elongated rectangular metal plate, and is provided with a shaft mounting hole 39a at the center in the lengthwise direction, and long holes 39b for fixing position adjustment at both ends. The guide link 40 is an elongated rectangular metal plate having a shaft insertion hole 41 at the center in the length direction and bearing holes 42 and 43 at both ends. The guide rollers 50 and 55 are composed of a stepped mounting shaft 44, a rubber cylindrical body 46, and a washer 47. The guide rollers 50 and 55 are caulked through the bearing shafts 42 and 43 through one lower narrow shaft portion 44a of the mounting shaft 44, while the rubber cylinder. After the upper end shaft portion 44b is fitted to the body 46, the rubber cylindrical body 46 is rotatably connected to the upper end shaft portion 44b via a washer 47.

  Therefore, when the sliding door D is in the closed position as shown in FIG. 1, the lower guide G3 is aligned with the shaft mounting hole 39a of the vertical axis n shown in FIG. The mounting base 39 is placed on the floor surface F in the depth direction Z perpendicular to the opening / closing direction X / Y of the opening S, and the wood screw 48 is passed through the elongated hole 39b as shown in FIG. Fix it. Next, in the lower guide G3, as shown in FIG. 8, the vertical axis n is inserted through the upper washer 51, the shaft insertion hole 41 of the guide link 40 and the lower washer 52 in this order, and the distal end shaft portion is passed through the shaft attachment hole 39a. The caulking and the guide link 40 are pivotally attached to the mounting base 39 with the vertical axis n as a fulcrum, and both guide rollers 50 and 55 are engaged with the guide groove 11 and assembled to the floor surface F. Accordingly, the lower guide G3 is a guide link 40 in which both guide rollers 50 and 55 are engaged with the guide groove 11, and guides the lower side of the sliding door D to move straight in the opening and closing directions X and Y without swinging when opening and closing. However, as shown in FIG. 1, when the sliding door D moves to the closed position, the first guide roller 50 on the door tip side engages with the guide groove 11, while the guide roller 55 on the door bottom side engages with the door in the guide groove 11. Since the sliding door D is located at the position where it has slipped out of the bottom opening 59, the sliding door D also extends in the depth direction Z of the opening S via the guide link 40 with the vertical axis n rising in the height direction of the opening S as a fulcrum. It is configured to be rotatable.

  Now, in the sliding door device A having the above-described configuration, for example, the bar handle (not shown) is held by hand, and the sliding door D is stopped at the open position overlapping the door-side wall 10b as shown in FIGS. In the case of holding and opening the opening S fully and then closing again, when the hand is released from the bar handle, the sliding door D follows the inclination of the sliding door rail L and the door on the traveling rail portion 15b leaning on its own weight. It automatically tilts in the closing direction Y while rotating 24 and 25. In the middle of the tilting of the sliding door D, as shown in FIGS. 14 to 17, while the door wheels 24 and 25 of the door wheel units T1 and T2 are engaged and rotated, they travel on the traveling rail portion 15b, while the upper guides G1 and G2 The guide rollers 30 and 35 are in contact with each other and rotate while traveling on the guide rail portion 15c. As a result, the sliding door D guides in the closing direction Y so as to move straight without swinging the upper side, and at the same time, guide grooves 11 Since both guide rollers 50 and 55 of the lower guide G3 are engaged with each other and the guide link 40 is in a rotation-restricted state, the lower guide G3 is guided in the closing direction Y so as to advance straight without sideways swinging on the lower side.

  Thereafter, in the sliding door device A, when the sliding door D reaches the closed position as shown in FIGS. 1 and 18 to 20, both of the guide rollers 30 and 35 of the upper guides G <b> 1 and G <b> 2 are provided on the upper side of the sliding door D. Faces the step portion 20 of the guide rail portion 15c. Then, at that time, the sliding door D is capable of rotating in the depth direction Z of the opening S about the horizontal axis m pivotally supported in parallel with the opening / closing directions X and Y of the opening S on the upper side. Since the door end side guide roller 50 of the lower guide G3 is engaged with the guide groove 11 on the lower side, the door bottom side guide roller 55 is in a position where it has slipped out of the guide groove 11 and removed. The guide link 40 erected in the height direction of the opening S can be rotated in the depth direction Z of the opening S with the vertical axis n of the guide link 40 as a fulcrum. The opening S is pulled toward the door in the depth direction Z door frame C. As a result, the sliding door D is pressed against the door frame C by pressing the upper and left and right side edges on the door frame C through the airtight material, and the lower side is between the floor surface F by the sealing material 45. By closing the gap, the four-side edges of the sliding door D are brought into airtight contact with the door frame C, and the opening S is closed in a sealed state.

  At the time of closing, in the illustrated sliding door device A, the sliding door rail L is fixed to the upper frame portion 10a of the door frame C with the door tip side inclined downward, while the sealing material 45 is attached to the sliding door D at its tip piece. Since 45a is attached in a state of protruding from the lower end surface, the protruding tip piece 45a does not hit the floor surface F and become a movement resistance while the sliding door D tilts according to the inclination of the sliding door rail L. At the same time as reaching the closed position, the protruding tip piece 45a hits the floor surface F, and the gap between the sliding door D and the floor surface F can be reliably closed. Therefore, the sliding door device A in the illustrated example requires a complicated mechanism such as a detection mechanism that detects that the sliding door D has reached the closed position when closed, and a shutter mechanism that raises and lowers the sealing material based on the detection result. In addition, the airtightness of the lower part of the sliding door can be realized at a very low cost by a simple configuration in which a sealing material is attached.

  When the sliding door D is opened, the bar handle is held by hand, the sliding door D in the closed position is now leaned against the door frame C due to its own weight, and the guide rollers 30 of the upper guides G1 and G2 are moved forward. 35 is pulled out from the stepped portion 20 of the sliding door rail L and then pulled back in the opening direction X. Then, the sliding door A travels while rotating the door wheels 24 and 25 on the traveling rail portion 15b of the sliding door rail L, and tilts upward in the opening direction X. In the middle of the tilting of the sliding door D, the door rails 24 and 25 are engaged and rotated while traveling on the traveling rail portion 15b, while the guide rollers 30 and 35 of the upper guides G1 and G2 are in contact with each other and rotated to guide rail portion 15c. In the guide link 40 in which the sliding door D moves straight without causing the upper side to sway, and at the same time the guide rollers 50 and 55 of the lower guide G3 are engaged with the guide groove 11 and the rotation is restricted. Then, the lower part is guided in the closing direction Y so as to go straight without causing the lateral swing, and the opening S is opened.

  By the way, in the illustrated embodiment described above, the sliding door device A has the sealing member 45 fixedly attached to the one side surface 12a of the guide case 12 provided in the guide groove 11 of the sliding door D, and the sliding door D moves to the closed position. Then, the protruding tip piece 45a hits the floor surface F, and is configured to close the gap between the sliding door D and the floor surface F. The gap between the sliding door and the floor surface depends on the room where the sliding door is installed. In some cases, it is opened wide with emphasis on air permeability, and on the other hand, it may be opened only slightly with emphasis on airtightness. Depending on the situation, the tip of the sealing material may not reach the floor surface, and the gap may not be sealed reliably, or on the contrary, the sealing material may be damaged due to excessive contact with the floor surface. It is done.

  Therefore, as shown in FIGS. 21 and 22, the sliding door device A of the present invention seals the gap when the sliding door D moves to the closed position regardless of the difference in the size of the gap with the floor surface F. It is also possible to adopt a configuration provided with a sealing means R that closes with a material.

  The sealing means R includes a sealing material 65 made of an elastic material such as rubber or synthetic resin, a wire 66 of a suspension member that suspends the sealing material 65, a pair of urging springs 67 and 67 of the sealing material 65, and a sliding door A pair of height adjusters 68 and 69 for adjusting the suspended height position of the sealing material 65 in accordance with the gap between D and the floor surface F are provided.

  The sealing material 65 has an elongated sheet shape, and the distal end piece 65a is formed to be thin so as to be easily bent, while the proximal end portion 65b is formed to be thicker and the proximal end portion 65b is formed in the longitudinal direction. A thin through-hole 61 is formed, and a spring locking groove 65c is recessed in parallel with the through-hole 61 along the upper side edge of the base end 45b. The height adjusters 68 and 69 each include a screw lock member 62, an adjustment screw 63, and a slide piece 64. The screw lock member 62 is formed by projecting retaining ring portions 62b and 62b on one side edge of the mounting plate portion 62a with an interval corresponding to the length of the screw shaft portion 63a of the adjusting screw 63. The slide piece 64 is provided with a female screw hole 64a and a wire retaining hole 64b in parallel. In the height adjusters 68 and 69, the adjusting screw 63 is inserted into the retaining ring portions 62b and 62b of the screw lock member 62, and the slide piece 64 is screwed into the screw shaft portion 63a through the female screw hole 64a. A stop nut 70 is screwed onto the tip of the portion 63a, and the adjustment screw 63 is rotatably held in the movement restricted state in the axial direction.

  Therefore, the sealing means R attaches the urging springs 67 and 67 to the one side surface 12a of the guide case 12 with an interval in the length direction. On the other hand, in the sealing material 65, the wire 66 is inserted into the wire through hole 61, one end thereof is passed through the wire retaining hole 64b, and the other end is passed through the wire retaining hole 64b. Hang on the other height adjuster 69. Then, the urging springs 67 and 67 are locked in the spring locking grooves 65c of the sealing material 65, and the screw lock members 62 of the height adjusters 68 and 69 are screwed to the one side surface 12a near the both end openings of the guide case 12. And assembled to the guide case 12. Then, the wire 66 is stretched between the height adjusters 68 and 69 by the urging force of the urging springs 67 and 67 that work downward so that the tip piece 65a of the sealing material 65 protrudes from the guide case 12, and the wire in the tension state At 66, the sealing material 65 is suspended in the depth direction of the guide case 12 so as to be movable up and down against the biasing springs 67 and 67. The guide case 12 in which the sealing means R is suspended in this way is fitted into the guide groove 11 and screwed, whereby the sealing means R is installed in the guide groove 11.

  Therefore, in the sliding door device A of the other example shown in the figure, when the sliding door D is initially installed, the sliding door D is moved to the closed position in advance, and then the height adjusters 68 and 69 are operated from outside the guide groove 11 to close the closed position. The suspended height position of the sealing material 65 is adjusted in accordance with the gap between the sliding door D and the floor surface F in the case, and then the height is adjusted when the sliding door D moves to the closed position during use. The leading end piece 65a of 65 abuts against the floor surface F, and the gap between the sliding door D and the floor surface F is reliably closed. The height adjusters 68 and 69 are operated by turning the adjusting screw 63 from the outside using, for example, a screwdriver. When the adjustment screw 63 is turned, the adjustment screw 63 is in the axial movement restricted state by the screw lock member 62, so that the slide piece 64 that is screwed into the screw shaft portion 63a of the adjustment screw 63 corresponds to the screwing direction. It moves linearly on the screw shaft portion 63a, and the tension of the wire 66 hung on the slide piece 64 is adjusted according to the moving length, thereby the height position of the sealing material 65 suspended by the wire 63 is adjusted. It can be easily adjusted according to the gap between the sliding door D and the floor surface F in the closed position.

  Therefore, according to the sliding door device A of the other example shown in the figure, when the sliding door D is suspended, the suspension height position of the sealing material 65 is adjusted in advance in accordance with the gap between the sliding door D and the floor surface F in the closed position. When the sliding door D moves to the closed position according to the inclination of the sliding door rail L during later use, the tip piece 65a hits the floor surface F so that the gap between the sliding door D and the floor surface F is closed. Therefore, even if there is a difference in the size of the gap between the floor and the room depending on the room where the sliding door is suspended, the gap between the floor and the floor is kept at the closed position regardless of the variation. It can be surely sealed.

A Sliding door C Door frame G1, G2 Upper guide G3 Lower guide F Floor L Sliding door rail R Sealing means S Opening T1, T2 Door unit X Opening direction Y Closing direction Z Depth direction m Horizontal axis n Vertical axis h Step 10a Upper frame Section 10b Door bottom wall 11 Sliding door guide groove 15b Traveling rail section 15c Guide rail section 20 Stepped section 24/25 Door 30/35 Guide roller 40 Guide link 45/65 Sealing material 50/55 Guide roller 40 Guide link 50 / 55 Guide roller 66 Wire (Hanging member)
67 Biasing spring 68/69 Height adjuster

Claims (4)

An open position where a sliding door with a guide groove recessed in the lengthwise direction on the lower end surface is supported by a sliding door rail laid on the upper frame of the door frame so as to be movable in the opening and closing direction, and the sliding door overlaps with the door-side wall When moving straight to the closed position, the sliding door device draws the sliding door toward the door frame and closes the opening,
A door carriage unit pivotally supported by a doorwheel and mounted on the sliding door; and an upper guide rotatably supported by a guide roller on the door end side and the door bottom side of the sliding door. A lower guide for guiding the lower side of the sliding door in the opening and closing direction,
The sliding door rail is provided with a guide rail portion in parallel with the traveling rail portion with which the door wheel is engaged, and when the sliding door is in the closed position on the guide rail portion, both the door end side and door bottom side guide rollers are provided. While forming a step portion of a length that can be inserted into the lower step, and fixing the step portion to the upper frame portion toward the side away from the opening,
The door cart unit pivotally pivots in a depth direction perpendicular to the opening / closing direction of the opening, with a horizontal axis pivotally supported in the opening / closing direction on the sliding door as a fulcrum,
The upper guide pivotally supports the guide roller at a position where an outer peripheral surface comes into contact with the guide rail portion when the sliding door is supported by the sliding door rail.
The lower guide pivotally supports a guide link pivotally supported at both ends by a guide roller to be engaged with the guide groove, and is pivotally attached to the floor surface with a vertical axis as a fulcrum. When the sliding door moves to the closed position, the guide roller on the door end side engages with the guide groove, while the height of the opening is at the fulcrum position where the guide roller on the door bottom side comes out of the guide groove and comes off. A sliding door device characterized by being erected in a direction.   The sliding door device according to claim 1, wherein the sliding door rail is fixed to an upper frame portion of the door frame with a door tip side inclined downward.   The sliding door is provided with an elastic sealing material with its tip piece protruding from the lower end surface, and when moved to the closed position, the sealing material closes a gap between the floor surface and the sealing material. The sliding door device according to claim 2, wherein In the sliding door, a sealing means for closing a gap between the floor surface is provided in the guide groove,
The sealing means includes an elastic sealing material, a suspension member that suspends the sealing material in a state in which a tip piece projects from the lower end surface of the sliding door, and a direction in which the sealing material projects from the guide groove. A biasing spring for biasing, and a height adjuster that adjusts the suspended height position of the sealing material in accordance with the gap between the sliding door and the floor surface when the sliding door is in the closed position. The sliding door device according to claim 2, wherein

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