JP5510969B2 - Sliding door device - Google Patents

Description

  The present invention relates to a sliding door device, and more specifically, a guide rail disposed horizontally on an upper side of an entrance / exit opening of a building cabinet, and a door that opens / closes the entrance / exit opening. And a sliding door device that includes a suspension wheel and a horizontal guide roller that are mounted on the upper portion of the door body and engage with the guide rail so as to be able to roll.

  Conventionally, in this type of sliding door device, in order to prevent the sliding door from rebounding when it is opened and to keep the sliding door open, the guide rail is bent at the rear end of the guide rail toward the container side. A structure in which the guide member is disposed is known (for example, see Patent Document 1).

  In the thing of this patent document 1, when a door body is open | released, since a suspension wheel rolls on the rail surface of a guide member and a door body shifts to the warehouse side, the momentum of a door body is attenuated. The door body can be prevented from rebounding, and the door body can be reliably maintained open.

  In addition, in this type of sliding door, particularly when the door opening is closed by the door body, it is necessary to keep the packing material provided around the door body side of the door body in close contact with the housing body to maintain airtightness. is there. In order to maintain airtightness in this way, a structure is employed in which the door member is pulled toward the housing side using the guide member.

Japanese Patent Laying-Open No. 2005-330711 (Claims, FIGS. 1, 3 and 5)

  However, the guide rail described in Patent Document 1 has a rail-shaped base portion that rises in a substantially inverted V shape in cross section, and a piece-like shape in which at least a rail surface that is connected to the rail base portion rises in an inverted V shape in cross section. Because it is composed of a guide member, it is necessary to join the rail base and guide member to assemble the guide rail, and to attach the guide rail to the cabinet, especially when the door is closed, In the structure of drawing, since a plurality of guide members and the rail base are joined, it takes time to assemble the guide rail itself and attach it to the cabinet. In addition, since the guide member has a structure in which the rail surface is formed at the same height as the rail surface of the rail base and is bent toward the box side, accuracy is required for processing the guide member.

  In addition, in a structure in which only the suspension wheel is biased toward the cabinet and the door is pulled, there is a concern that the movement of the door may become unstable.

  The present invention has been made in view of the above circumstances, and a horizontal guide roller mounted on a door body is engaged with a concave roller guide traveling portion provided on a guide rail so as to stabilize the movement of the door body. It is an object of the present invention to provide a sliding door device.

In order to achieve the above object, a sliding door device according to the present invention opens and closes a guide rail horizontally disposed on an upper side of an entrance / exit opening provided in a warehouse of a building, and the entrance / exit opening. A sliding door device comprising a door body and a suspension wheel mounted on an upper portion of the door body, each of which is movably engaged with the guide rail and a horizontal guide roller, wherein the guide rail includes: A wheel running part capable of rolling the suspension wheel; a fixed part fixed to the box; and a roller running part extending below the fixed part and capable of rolling the horizontal guide roller. And
The wheel travel part and the fixed part are connected by an inclined connecting piece having a downward slope from the fixed part toward the wheel traveling part, the intermediate part of the inclined connecting piece and the fixed part are connected by a reinforcing piece, and the roller running parts are induced is formed in a U-shaped cross-section having a space on the back side, the horizontal guide rollers upon opening and during closing of the door body in the guide rails in the space portion Kuratai side having a vertical travel surface An attraction member having a concave roller guide traveling portion is provided (claim 1).

  By configuring in this way, the suspension body and the horizontal guide roller mounted on the upper part of the door body are caused to roll on the traveling section provided on the guide rail made of one member disposed in the storage body, respectively. Can be opened and closed. Moreover, a horizontal guide roller can be engaged with the concave roller guide running part provided in the guide rail, and a door body can be drawn near to the box side.

In the present invention, the suspension wheel includes a concave traveling surface whose diameter increases toward the opening side, and a pair of flange portions engageable with the wheel traveling portion of the guide rail. The guide rail includes the suspension rail. A rail surface portion that rises in an inverted U-shaped cross section that allows the concave running surface of the wheel to roll, a pair of inclined pieces that incline downwardly from the lower ends of both sides of the rail surface portion, and both the inclined pieces Are formed in a hollow shape composed of a pair of hanging pieces that hang down from the lower ends of the upper and lower connecting pieces that connect the lower ends of both hanging pieces, and the inclination angle of the inclined pieces is provided in the flange portion of the suspension wheel. It is preferably formed in a shape substantially similar to the inclined surface.

  By configuring in this way, the flange portion of the suspended wheel (the flange portion on the opposite side of the flange portion on the housing side) engages with the wheel traveling portion, so that the suspended wheel reliably engages with the guide rail and moves toward the housing side. Can move.

In the present invention, the pulling member having the concave roller guide running portion is formed separately from the guide rail, and forms a notch for attaching the pulling member to the roller running portion of the guide rail. the attracted member is fitted inserted into the cutout portion, a base portion having the concave rollers guiding the traveling unit on the surface, projecting from the opposite sides of the base fitting is fitted on the back-side space of the roller driving portion The concave roller guide running part has an inclined guide surface that is inclined upward from both ends of a flat surface formed on the central surface toward the surface on the fitting protrusion side. It is preferable to form it in a concave shape (claim 3 ).

  With this configuration, the pulling member can be easily incorporated into the traveling portion of the guide rail, and the vertical traveling surface of the traveling portion and the surface of the roller guide traveling portion of the attracting member can be smoothly continued. it can.

In addition, in the present invention, it is preferable that the guide rail is formed of an aluminum (including aluminum alloy) extruded profile, and the drawing member is formed of a synthetic resin member such as polyacetal resin. Item 4 ).

  By comprising in this way, while being able to improve the dimensional accuracy of a guide rail, the assembly | attachment to the guide rail of a attracting member can be made easy.

  According to this invention, since it is configured as described above, the following excellent effects can be obtained.

  (1) According to the first to third aspects of the present invention, the running part provided on the guide rail rolls the suspension wheel and the horizontal guide roller mounted on the upper part of the door body to open and close the door body. Thus, opening and closing of the door body can be stabilized. In addition, the horizontal guide roller can be engaged with the concave roller guide running portion provided on the guide rail to draw the door body toward the housing body, so that the door body can be reliably pulled toward the housing body side. it can.

(2) According to the invention described in claim 3 , in addition to (1), the drawing member can be easily incorporated into the roller running portion of the guide rail, and the vertical running surface of the running portion and the drawing member roller The surface of the guide travel unit can be smoothly continued.

(3) According to the invention described in claim 4 , in addition to (1) and (2), the dimensional accuracy of the guide rail can be further improved and the assembling of the attracting member to the guide rail is facilitated. can do.

It is a schematic front view which shows the sliding door apparatus which concerns on this invention. It is sectional drawing (a) which shows the said slide door apparatus, and the I section expanded sectional view (b) of (a). It is an expanded sectional view showing a guide rail in this invention, a suspension wheel, and a horizontal guide roller. It is a front view which shows the guide rail and 1st and 2nd drawing member in this invention. It is an expanded sectional view which shows the drawing state of the guide rail in this invention, a suspension wheel, and a horizontal guide roller. It is the top view (a) and sectional drawing (b) which show the engagement state of the guide rail and 1st drawing member in this invention. It is the top view (a) and sectional drawing (b) which show the engagement state of the horizontal guide roller and 2nd drawing member in this invention. It is a perspective view which shows the guide rail in this invention. It is a perspective view which shows the 1st drawing member in this invention. It is perspective view (a) which shows the 2nd drawing member in this invention, sectional drawing (b) which follows the II-II line of (a), and sectional drawing (c) which follows the III-III line of (a). It is a disassembled perspective view which shows the state which attaches the 2nd drawing member in this invention to a guide rail.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail based on an accompanying drawing. Here, the case where the sliding door apparatus which concerns on this invention is used for a freezer is demonstrated.

  A sliding door device according to the present invention includes a guide rail 3 disposed horizontally on an upper side of an opening / closing opening 2 (hereinafter referred to as an opening 2) opened in a cabinet 1 of a prefabricated freezer, and an opening. The door 5 that opens and closes the portion 2 is mounted on the vertical piece 6a of the L-shaped bracket 6 that is mounted on the upper end of the door 5 and is opposed to the concave running surface 7a that rolls on the guide rail 3. A horizontal guide roller 8 which is mounted on a suspension wheel 7 having a pair of flange portions 7b on both sides and a horizontal piece 6b of the bracket 6 and which can roll on the outer surface of the opening frame 2a mounted on the opening edge of the opening 2. And it is mainly comprised by the shift | offset | difference packing 9 with which it attaches to the lower end part of the door body 5 and contacts the floor surface F. FIG.

  Further, a first pulling member 40A (hereinafter referred to as an upper pulling member below) that pulls the suspension wheel 7 toward the housing side at a position where the suspension wheel 7 and the horizontal guide roller 8 are located when the door body 5 is opened and closed in the guide rail 3. 40A) and a second pulling member 40B (hereinafter referred to as a lower pulling member 40B) for guiding the horizontal guide roller 8 to the box side.

  Further, when the door body 5 is closed, the door body 5 is engaged with each other at a position where the lower end portion of the door body 5 and the floor surface F in the vicinity of the opening 2 of the container body 1 are opposed to each other. A sealing movement means 10 is formed to press against the opening 2. Further, a packing seat 2b is provided along the opening edge of the opening frame 2a (see FIG. 2).

  The door body 5 includes a pair of surface plates 5a, a frame material 5b interposed between the side portions of the surface plates 5a, and foamed polyurethane or the like in a space formed by both the surface plates 5a and the frame material 5b. It has a sandwich structure filled with a foamable heat insulating core material 5c, and a packing seat 2b provided around the opening frame 2a of the opening 2 on the upper side and the left and right sides of the door body 5 on the side of the box 1. A cylindrical packing material P that is in pressure contact therewith is provided around (see FIG. 2).

  The suspension wheel 7 is attached to two places on both ends in the sliding direction at the upper end of the door body 5. That is, the suspension wheel 7 is attached to the vertical piece 6a of the L-shaped bracket 6 fixed to the upper end of the door body 5 so as to be rotatable in the vertical direction via the horizontal support shaft 7d. The suspension wheel 7 includes a pair of flange portions 7b1 and 7b2 on both sides of the concave traveling surface 7a, and has an inclined surface 7c that relatively expands on the inner surface of the front end side of both flange portions 7b1 and 7b2. ing. The inclined surface 7c is formed at an inclination angle similar to the inclination angle (gradient) of the inclined piece 34 of the guide rail 3 to be described later.

  Moreover, the position of the suspension wheel 7 can be adjusted according to the mounting state of the door body 5 (specifically, the unevenness or the inclined state of the floor surface F on which the door body 5 is located). That is, a support shaft that is slidable (movable up and down) in a vertical slot (not shown) provided in a vertical piece 6a of an L-shaped bracket 6 fixed to the upper end of the door body 5. 7d is rotatably mounted in the vertical direction (see FIG. 2). A stopper mechanism 60 is provided at the upper end of the vertical piece 6a of the bracket 6 to prevent the door body 5 from being lowered by its own weight. By tightening or loosening the bolt 61 of the stopper mechanism 60, the door body 5 can be adjusted up and down while the door body 5 is suspended. By adjusting the stopper mechanisms 60 at both the left and right ends, the door body is adjusted. 5 can be suppressed.

  The horizontal guide roller 8 is mounted on a horizontal piece 6b below the suspension wheel 7 of the bracket 6 fixed to the upper end of the door body 5 so as to be rotatable in the horizontal direction via a vertical support shaft 7e. The horizontal guide roller 8 is disposed on the lower side of the suspension wheel 7 corresponding to the suspension wheel 7 at two locations. That is, the horizontal guide roller 8 is provided on substantially the same vertical plane as the suspension wheel 7.

  As shown in FIGS. 2, 3, and 8, the guide rail 3 includes a first traveling unit 30 on which the suspension wheel 7 rolls (hereinafter referred to as a wheel traveling unit 30), and an opening of the box 1. 2 is fixed to the upper outer surface of the upper portion 2, and extends to the lower portion of the fixing portion 31, is brought into contact with the outer surface of the packing seat 2 b provided at the upper portion of the opening 2, and the horizontal guide roller 8 rolls. A possible second traveling portion 32 (hereinafter referred to as a roller traveling portion 32) is formed of an aluminum extruded profile. The guide rail 3 is disposed over a closed area A where the door 5 closes the opening 2 of the cabinet 1 and an open area B where the door 5 opens the opening 2.

  The wheel traveling portion 30 includes a rail surface portion 33 that rises in an inverted U-shaped cross section that allows the concave traveling surface 7a of the suspension wheel 7 to roll, and a downward slope from both lower ends of the rail surface portion 33 outward. It is formed in a hollow shape including a pair of inclined pieces 34 that are inclined, a pair of hanging pieces 35 that are suspended from the lower ends of both inclined pieces 34, and a lower connecting piece 36 that connects the lower ends of both hanging pieces 35. . Note that the inclination angle (gradient) of the inclined piece 34 is formed in a substantially similar shape to the inclined surface 7 c provided in the flange portions 7 b 1 and 7 b 2 of the suspension wheel 7.

  The fixed portion 31 and the roller traveling portion 32 are connected via a crank-shaped step portion 37, and a horizontal piece 36 a extending from the lower connecting piece 36 of the wheel traveling portion 30 is connected to the crank-shaped step portion 37. Yes. The fixing part 31 has an attachment hole (not shown) for the attachment bolt 70 penetrating the wall part 1a of the box body 1 at the upper part, and the lower part of the attachment hole part and the horizontal piece 36a are connected to the wheel from the fixing part 31. Connected to the traveling portion 30 by an inclined connecting piece 38a having a downward slope, and a reinforcing piece 38b is connected to the intermediate portion of the inclined connecting piece 38a and the crank-shaped step portion 37. Further, a narrow groove-like horizontal groove 39a is provided on the surface of the roller running portion 32 in the vicinity of the crank-shaped step portion 37, and packing is provided at the lower end of the vertical guide piece 39b extending below the opening of the horizontal groove 39a. A bent piece 39c that abuts against the surface of the seat 2b is provided. Accordingly, the roller running portion 32 is formed in a U-shaped cross section by the opening lower piece of the horizontal groove 39a, the bent piece 39c, and the vertical guide piece 39b having a vertical running surface, and the vertical running of the surface of the vertical guide piece 39c. The horizontal guide roller 8 comes into contact with the surface in a rollable manner.

  The guide rail 3 formed as described above passes through a mounting hole (not shown) provided in the fixing portion 31 with the mounting bolt 70 in a state in which the fixing portion 31 is in contact with the mounting surface of the cabinet 1. The guide rail 3 can be firmly fixed by being screwed to the cabinet 1. Moreover, since the guide rail 3 is integrally formed by the aluminum extrusion shape member, a dimensional accuracy can be improved and the attachment to the storage body 1 can be made easy.

  In addition, the door end side and door bottom side stopper member 52 which controls the movement of the door body 5 is attached to the floor surface F of the closed position of the door body 5 and an open position (refer FIG. 1).

  The upper pulling member 40A is formed of a synthetic resin member such as polyacetal. As shown in FIGS. 6 and 9, the upper pulling member 40 </ b> A includes a mounting piece 41 that is superposed on the surface of the fixing portion 31 of the guide rail 3 and fixed by a mounting bolt 70, and an inclined connecting piece of the guide rail 3. 34, and an inclined piece 43 that is connected to a connecting screw 42 that is a connecting member and a wheel guide portion 44 that protrudes from the lower end of the inclined piece 43. The wheel guide portion 44 is formed with a pulling inclined surface 44 a that guides the inclined surface 7 c of the housing-side flange portion 7 b 1 of the suspension wheel 7 to the housing side. The attachment piece 41 is provided with an attachment hole 41 a for the attachment bolt 70, and the inclined piece 43 is provided with an attachment hole 43 a for the connection screw 42. The upper drawing member 40 </ b> A formed in this way is simply and firmly fixed along the guide rail 3.

  In the state where the inclined surface 7c of the housing-side flange portion 7b1 of the suspension wheel 7 is engaged with the attracting inclined surface 44a of the upper pulling member 40A formed as described above, the inclination of the other flange portion 7b2 of the suspension wheel 7 is inclined. The surface 7c is adapted to engage with the inclined piece 34 of the wheel traveling portion 30 (see FIG. 6B). Thereby, the suspension wheel 7 can be reliably engaged with both the guide rail 3 and the upper pulling member 40 </ b> A, and can move to the box side.

  On the other hand, the lower pulling member 40B is formed of a synthetic resin member such as polyacetal, for example, like the upper pulling member 40A. As shown in FIGS. 7, 10, and 11, the lower pulling member 40 </ b> B is attached to a notch 32 a provided in the roller running portion 32 having a U-shaped cross section provided in the guide rail 3. That is, as shown in FIGS. 7, 10, and 11, the lower pulling member 40 </ b> B is fitted into the notch 32 a and has a base 46 having a concave roller guide running part 45 on the surface, and the base 46. And a fitting protrusion 47 that protrudes from both sides and is inserted into the back surface side space 32b of the roller running portion 32. In this case, the roller guide running portion 45 is formed in a concave shape having an inclined guide surface 45b that is inclined upward from both ends of the flat surface 45a formed on the center surface toward the surface on the fitting protrusion 47 side.

  The lower pulling member 40B formed as described above can be easily incorporated into the roller travel part 32 of the guide rail 3, and the surface of the roller guide travel part 45 of the lower pulling member 40B and the vertical travel surface of the roller travel part 32. And can be smoothly continued.

  The door closing members 11 and 12 are mounted on the front end side and the rear end side of the opening and closing movement on the side of the lower end of the door body 5, and are arranged on the floor surface F in the vicinity of the opening 2 of the cabinet 1. The sealing movement means 10 is formed by the guide rollers 14A and 14B that are provided and engage with the door drawing members 11 and 12 at the closed position of the door body 5, respectively (see FIGS. 1 and 2). A protector 13 is attached to the lower end portion of the outer surface plate 5a of the door body 5 so as to be connected between the door attracting members 11 and 12, and the guide rollers 14A and 14B come into contact with the protector 13. Thus, the surface plate 5a can be protected.

  Note that a case body (not shown) in which a linear rail of the linear motor is disposed may be attached to the upper portion of the opening 2 of the box body 1, and this case body is hidden from the outside by the decorative cover 20. Yes.

  The decorative cover 20 is detachably engaged with a cover receiving member 21 fixed to the outer surface of the cabinet 1 by a fixing screw 22. In this case, the cover receiving member 21 is formed, for example, in the shape of a piece obtained by cutting an aluminum extruded profile into an appropriate length, and a plurality of the cover receiving members 21 are arranged at appropriate intervals. The cover receiving member 21 includes a tip of an upper inclined piece 24 inclined downward from an upper end portion of the vertical fixed piece 23 fixed to the wall 1 a of the container 1, and an upper portion of the vertical fixed piece 23. A projecting portion 26 having a hollow triangular shape connecting the tip of the lower inclined piece 25 inclined upward from the side to the outside is provided, and the engaging portion provided at the tip of the upper inclined piece 24 in the protruding portion 26 is provided. The decorative cover 20 is detachably engaged with the stop groove 27. A horizontal locking piece 27 a projects from the upper opening end of the locking groove 27 toward the locking groove 27.

  The cover receiving member 21 does not necessarily have a plurality of pieces, and may be one cover receiving member having a longitudinal shape.

  The decorative cover 20 is formed of, for example, an extruded shape member made of aluminum. The decorative cover 20 has a locking claw portion 28 a that is detachably locked in the locking groove 27 of the cover receiving member 21 at one end, and is inclined to be connected to the upper inclined piece 24 of the cover receiving member 21. An upper cover portion 28 and a front cover portion 29 that is bent from the lower end (other end) of the upper cover portion 28 and covers the guide rail 3 and the suspension wheel 7 are provided.

  In the decorative cover 20 configured as described above, the locking claw portion 28a is normally engaged with the locking groove 27, and the front cover portion 29 covers the rail 3 and the suspension wheel 7 (FIG. 2). reference). Further, at the time of maintenance / inspection, the decorative cover 20 is lifted upward, the locking claw portion 28a is slid between the horizontal locking piece 27a of the locking groove 27, and the decorative cover 20 is held in an open state. Maintenance / inspection work of the traveling part of the guide rail 3 and the suspension wheel 7 and the linear motor can be performed.

  As described above, since the decorative cover 20 and the cover receiving member 21 are both aluminum extruded shapes, the locking groove 27 and the locking claw portion 28a have a metal touch. The locking groove 27 and the locking claw portion 28a hit and a so-called chatter noise is generated. In order to prevent this chatter noise, as shown in FIG. 2 (b), between the back surface of the decorative cover 20 on the side of the locking claw 28a and the upper surface of the top end of the upper inclined piece 24 of the cover receiving member 21. It is preferable that a gap s is provided and a sound absorbing packing member Pa is interposed in the gap s.

  A heater (not shown) for preventing thawing and dew condensation water is embedded at an appropriate position of the opening frame 2a of the box 1 and an appropriate position of the packing seat 2b.

  On the other hand, a shift packing 9 that comes into contact with the floor surface F is attached to the lower end of the door 5 on the side of the cabinet 1 (see FIGS. 1 and 2). The displacement packing 9 is formed in a band plate shape by a synthetic rubber member having flexibility, and as shown in FIG. 2, a packing receiving member 80 fixed to the lower end surface of the door body 5, and a door body. 5 is sandwiched and fixed by a packing presser member 90 fixed to the surface of the lower end portion of 5.

  The packing receiving member 80 includes a horizontal fixing piece 82 fixed to the lower end surface of the door body by a first fixing screw 81, an upper vertical piece 83 attached to the side surface of the cabinet body of the door body 5, and the upper vertical piece. It is formed of an aluminum extruded profile having a lower vertical piece 84 depending on the lower end of 83. In the case of a refrigerator door, the packing receiving member 80 is formed of a synthetic resin member. In this case, two fitting grooves 85 and 86 that are open in a narrow opening toward the lower side are arranged in parallel on the lower surface of the front end portion of the horizontal fixing piece 82, and the inside of the both fitting grooves 85 and 86. T-shaped packings 9a and 9b each having a substantially T-shaped cross section are attached in a hanging manner. A protective piece 87 is suspended from the leading end opening edge of the fitting concave groove 85 on the leading end side, and the upper surface of the T-shaped packing 9a is protected by the protective piece 87. Further, a locking groove 88 having a pair of locking walls parallel to each other is provided in a portion adjacent to the fitting groove 86 in the horizontal fixing piece 82, and aluminum inserted into the locking groove 88. The heater wire storage member 89 made of the extruded shape member is screwed to the horizontal fixing piece 82 and the frame material 5b on the lower side of the door body 5 with the first fixing screw 81, so that the heater wire storage member together with the packing receiving member 80 is obtained. 89 is fixed to the lower end of the door body 5.

  Further, the packing pressing member 90 is formed of an extruded shape member made of aluminum. The packing holding member 90 abuts against the surface of the shift packing 9 at the center, and a flat fixing piece 92 through which a second fixing screw 91 as a fixing member passes, and a second fixing member 92 with respect to the flat fixing piece 92. The fixing screw 91 has a raised portion 94 that rises higher than the height of the head 91a, and has a pair of vertically symmetrical presser wing pieces 93 having a downward inclined surface toward the tip, and the presser wing piece 93 Is formed so that the packing 9 can be sandwiched between the lower end of the lower vertical piece 84 of the packing receiving member 80. In addition, as shown in FIG. 2, a concave groove 95 is formed on the back surface of both presser wing pieces 93 of the packing pressing member 90 so that the tips thereof are displaced and contact the packing 9 in the longitudinal direction.

  According to the packing presser member 90 formed as described above, the displacement packing 9 can be clamped and fixed at a position close to the floor surface F in cooperation with the lower vertical piece 84 of the packing receiving member 80. The displacement packing 9 can be firmly fixed, and deformation and damage of the displacement packing 9 accompanying opening and closing of the door body 5 can be suppressed. Further, the protruding portion 94 of the packing pressing member 90 can prevent the head 91a of the fixing screw 91 from projecting to the outside, and the pair of pressing wing pieces 93 at the upper and lower portions of the packing pressing member 90 at the tip. Interference with an external object can be suppressed by using a downward inclined surface. Further, by forming the pair of presser wing pieces 93 of the packing presser member 90 in a vertically symmetrical shape, there is no fear of attaching the packing presser member 90 upside down when fixing the shift packing 9 to the door body 5. The attachment work of the packing 9 can be facilitated. A cap member (not shown) made of synthetic resin is attached to the end portion of the packing pressing member 90 in the longitudinal direction.

  According to the slide door device according to the present invention configured as described above, the suspension wheel 7 and the horizontal guide mounted on the upper portion of the door body 5 are mounted on the wheel traveling unit 30 and the roller traveling unit 32 provided on the guide rail 3. Since the roller 8 can be rolled to open and close the door body 5, the opening and closing of the door body 5 can be stabilized.

  When the door body 5 is moved to the open position or the closed position, the suspension wheel 7 and the horizontal guide roller 8 provided on substantially the same vertical plane are respectively attached to the upper pulling member 40A and the lower pulling member 40B mounted on the guide rail 3. Since the door body 5 can be pulled toward the box side by engaging in synchronization, the door body 5 can be reliably pulled toward the box side.

  Further, in the state where the inclined surface 7c of the housing side flange portion 7b1 of the suspension wheel 7 is engaged with the drawing inclined surface 44a of the upper drawing member 40A, the other flange portion 7b2 of the suspension wheel 7 (the opposite side of the flange portion on the housing side) Since the inclined surface 7c of the flange portion) engages with the inclined piece 34 of the wheel traveling unit 30, the suspended wheel 7 can reliably engage both the guide rail 3 and the upper pulling member 40A and move to the box side. it can.

  In addition, although the said embodiment demonstrated the case where the sliding door apparatus which concerns on this invention was applied to the prefabricated freezer, for example, a prefabricated refrigerator other than a prefabricated freezer, a clean room, a storage, or a general building Of course, the same applies.

DESCRIPTION OF SYMBOLS 1 Storage body 2 Entrance / exit opening part 3 Guide rail 5 Door body 7 Suspension wheel 7a Concave travel surface 7b1, 7b2 Flange part 30 Wheel travel part 40B Lower drawing member (drawing member)
41 Mounting piece 42 Connection screw (connection member)
43 Inclined Piece 44 Wheel Guide 44a Pulling Inclined Surface 45 Roller Guide Traveling Section 45a Flat Surface 45b Inclined Guide Surface 46 Base 47 Fitting Projection

Claims (4)

A guide rail that is horizontally disposed on the upper side of the entrance opening provided in the building cabinet, a door body that opens and closes the entrance opening, and an upper portion of the door body. A sliding door device comprising a suspension wheel and a horizontal guide roller that are slidably engaged with the guide rail,
The guide rail includes a wheel traveling unit capable of rolling the suspension wheel, a fixed unit fixed to the warehouse, and a roller traveling that extends to a lower portion of the fixed unit and allows the horizontal guide roller to roll. And comprising
The wheel travel part and the fixed part are connected by a downwardly inclined inclined connecting piece from the fixed part toward the wheel traveling part, and the intermediate part of the inclined connected piece and the fixed part are connected by a reinforcing piece,
The roller driving unit with is U-shaped cross section having a space on the back side with a vertical running surface, upon opening of the door body in the guide rails in the space portion and Kuratai side the horizontal guide rollers when closed A pulling member having a concave roller guide running part that is guided to
A sliding door device characterized by that. The sliding door device according to claim 1,
The suspension wheel includes a concave traveling surface that expands toward the opening side, and a pair of flange portions that can be engaged with the wheel traveling portion of the guide rail,
The guide rail has a rail surface portion that rises in an inverted U-shaped cross section that allows the concave running surface of the suspension wheel to roll, and a pair of slopes that incline downwardly from the lower ends on both sides of the rail surface portion. Formed of a piece, a pair of hanging pieces that hang from the lower ends of both inclined pieces, and a lower connecting piece that connects the lower ends of both hanging pieces, and the inclination angle of the inclined pieces is determined by the suspension wheel. Is formed in a substantially similar shape to the inclined surface provided in the flange portion of
A sliding door device characterized by that. In the sliding door device according to claim 1 or 2 ,
The pulling member having the concave roller guide running portion is formed separately from the guide rail,
Forming a notch for attaching the pulling member to the roller running portion of the guide rail;
The pulling member is inserted into the notch, and has a base having the concave roller guide running part on the surface, and a fitting projecting on both sides of the base and being inserted into the back side space of the roller running part. A protrusion, and
The concave roller guide running portion is formed in a concave shape having an inclined guide surface with an upward slope from both ends of a flat surface formed on the center surface toward the surface on the fitting projection side.
A sliding door device characterized by that. In the sliding door apparatus in any one of Claims 1 thru | or 3 ,
The guide rail is formed of an aluminum extruded shape, and the drawing member is formed of a synthetic resin member.
A sliding door device characterized by that.

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