JP7388979B2 - sliding door - Google Patents

Description

The present invention relates to a sliding door in which a door body is movably connected in an opening/closing direction.

In general, various types of sliding doors are known, including a type in which an entrance is opened and closed by a door body rotatably supported on a hanging gatepost, and a type in which a plurality of door bodies are connected in the left-right direction. In the former case, the door body is supported by a hanging gatepost, and it is necessary to ensure a range in which the door body can rotate, so it is not suitable for sliding doors used in wide frontages. In the latter case, a hanging rail is often used to suspend and support the door at the entrance or exit, or wheels are provided at the bottom of the door to allow the door to run on the installation surface. This allows it to be used in wide frontages, but objects higher than the height of the hanging rail cannot pass through, and on the other hand, if the installation surface is uneven, there is a risk that the wheels of the door body will not be able to run smoothly. there were.

Therefore, Cited Document 1 discloses a non-rail sliding door in which a support body is provided outside the passage, a horizontally long door body is suspended from guide rollers provided on the support body, and the door body is movable in the longitudinal direction. A door body pushing member is provided at a lower position, the door body pushing member is mounted on a support roller, and its tip portion moves upward when the door body pushing member moves toward the passage side. A non-rail sliding door has been proposed in which a body pushing member is engaged to move the door body pushing member as the door body moves, and the door body pushing member is brought into pressure contact with the door body during the closing operation of the door body.

Japanese Patent Application Publication No. 9-217572

By the way, in the non-rail sliding door, the sagging of the door body is suppressed, and since there is no need to use a hanging rail or a guide rail at the entrance/exit, the degree of freedom of passage through the entrance/exit can be increased. On the other hand, since the door body pushing member is mounted on the support roller, a gap is required between the installation surface and the door body pushing member, and in order to smoothly move the door body above the door body pushing member, Since it is preferable that there be a gap between them, there is a limit to reducing the gap between the door body and the installation surface.

The present invention solves the above problems and provides a sliding door that can reduce the gap between the movable door body and the installation surface as narrow as possible while suppressing the sagging of the movable door body. .

In order to achieve the above object, the present invention has the following configuration.
That is, the sliding door according to the present invention is a sliding door in which a first door body, a second door body, and a third door body are stacked and connected in the thickness direction, and the first door body has a rectangular shape. The second door body includes a frame body having a shape and a panel body attached to the frame body, and is fixed to the installation surface. The third door body includes a frame body formed in a rectangular shape by a right vertical member, and a horizontal member attached at intervals vertically. an attached panel body, the lower ends of the second door body and the third door body are spaced apart from the installation surface, and the frame body of the second door body is formed by the middle vertical member, A left frame portion on the entrance side and a right frame portion on the opposite side are formed, and in the movement range of the second door body and the third door body, the entire inside of the left frame portion is formed as seen in the thickness direction. It is characterized in that it overlaps with the third door body, and the entire inside of the right frame portion overlaps with the first door body.

In the present invention, the left frame portion and the right frame portion may have reinforcing members attached to their respective corners.

The first door body and the third door body may each be provided with reinforcing bars across the upper and lower parts in the left-right direction.

According to the present invention, since the third door body is connected to the second door body overlapping in the thickness direction, the third door body can open and close the entrance/exit even without a hanging rail or wheels. This prevents the third door from sagging and allows it to be positioned as close to the installation surface as possible.

FIG. 1 is a front view showing one embodiment of a sliding door according to the present invention. FIG. 2 is a front view showing another state of the sliding door in FIG. 1; FIG. 2 is a front view showing still another state of the sliding door in FIG. 1; FIG. 2 is a plan view of FIG. 1; FIG. 2 is a side view of FIG. 1; It is an explanatory view of each door body of Drawing 1. FIG. 2 is an enlarged sectional view of a main part taken along line AA in FIG. 1. FIG. FIG. 8 is an explanatory diagram showing the relationship between the rail member and the traveling section in FIG. 7; It is an explanatory view showing the relationship between a first door body and a second door body. 2 is an enlarged cross-sectional view of the main part taken along line BB in FIG. 1. It is an explanatory view showing the relationship between a second door body and a third door body. It is a front view which shows other embodiment in the sliding door based on this invention. FIG. 13 is an explanatory diagram of the first door body and the third door body of FIG. 12;

Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.

1 to 3 are front views showing one embodiment of the sliding door according to the present invention, with FIG. 1 showing the closed state, FIG. 2 the slightly opened state, and FIG. 3 the open state. 4 is a plan view of FIG. 1, and FIG. 5 is a side view of FIG. 1. In the sliding door 100 according to this embodiment, a first door body 10, a second door body 20, and a third door body 30 are stacked and connected in the thickness direction. The first door body 10 is fixed to the installation surface, and the second door body 20 and the third door body 30 are movable in the left-right direction. Furthermore, the lower end surfaces 20a and 30a of the second door body 20 and the third door body 30 are spaced apart from the installation surface. Then, when the third door body 30 is moved to the left where the gatepost 200 is erected, the second door body 20 is also moved from a predetermined position, and the entrance A is closed as shown in FIG. . When the third door body 30 is moved in the opposite direction to the right, the doorway A in FIG. 2 becomes slightly open, and then the doorway A opens as shown in FIG. 3. Note that, unless otherwise specified, the thickness direction of each door body is described as the front-rear direction, the direction in which the doorway is closed as the left direction, and the direction in which the doorway is opened as the right direction.

FIG. 6 is an explanatory diagram of each door body, in which (a) is a front view of the first door body 10, (b) is a front view of the second door body 20, and (c) is a front view of the third door body. 30 is a front view. As shown in FIG. 6(a), the first door body 10 includes a frame body 11 formed in a rectangular shape by a plurality of vertical members 13 and a plurality of horizontal members 14, and is attached to the inside of the frame body 11. A panel body 12 is provided. In addition, the frame 11 may have a form in which a plurality of frames 11 are connected in the left-right direction as in this embodiment, or may have a form in which the space inside the frame 11 is divided vertically by cross members 14. Further, as shown in FIGS. 4 and 5, the vertical member 13 is fixed to the installation surface via a fixing fitting 15 attached to the lower end. Further, the vertical members 13 at both the left and right ends are connected to a support panel 16 erected on the rear side, so that the first door body 10 is stably fixed to the installation surface.

The horizontal members 14 may be attached to the upper and lower ends of the vertical members 13, but in order to avoid the influence of uneven installation surfaces, the lower horizontal members 14 are attached to the vertical members as in this embodiment. It may be installed slightly above the lower end of 13.

The panel body 12 is visible in the thickness direction of the first door body 10 and is designed to prevent passersby from passing through the inside of the first door body 10. In this embodiment, the panel body 12 has a lattice shape, but for example, it may be a transparent plate material, or it may be a plurality of louver materials arranged vertically or horizontally at predetermined intervals.

The second door body 20 is arranged on the front side of the second door body 20 as shown in FIG. The frame body 21 is formed into a rectangular shape by a member 22a, a middle vertical member 22b, a right vertical member 22c, and horizontal members 23, 23 attached vertically at intervals. The second door body 20 does not have a panel body like the first door body 10, and is partitioned left and right by a middle vertical member 22b to form a left frame portion 24 and a right frame portion 25. ing.

Next, the third door body 30 includes a frame body 31 formed in a rectangular shape by a plurality of vertical members 33 and a plurality of horizontal members 34, and a frame body 31, as shown in FIG. 6(c). It also includes a panel body 32 attached to the inside. In addition, the frame 31 may have a form in which a plurality of frames 31 are connected in the left-right direction as in this embodiment, or may have a form in which the space inside the frame 31 is divided vertically by cross members 34.

The panel body 32 is visible in the thickness direction of the third door body 30 and prevents passersby from passing through the inside of the third door body 30. Although the panel body 32 has a lattice shape in this embodiment, it may be made of a transparent plate material, or it may be made of a plurality of louver materials arranged vertically or horizontally at predetermined intervals.

Next, a connection structure between the first door body 10 and the second door body 20 will be explained. 7 is an enlarged cross-sectional view of a main part taken along the line AA in FIG. 1, and FIG. 8 is an explanatory diagram showing the relationship between the rail member 41 and the running section 51. In the second door body 20, a rail member 41 is attached to the rear side of the upper and lower cross members 23, 23 along the longitudinal direction. On the other hand, in the first door body 10, the upper and lower cross members 14 are provided with a running portion 51 having a running body 52 that can run within the rail member 41. As the traveling body 52 travels within the rail member 41, the second door body 20 can move in the left-right direction with respect to the first door body 10. Although FIG. 7 relates to the connection structure on the upper side of the first door body 10 and the second door body 20, the connection structure on the lower side of the first door body 10 and the second door body 20 is also similar. Therefore, detailed explanation will be omitted.

The rail member 41 has a base 41a attached to the cross member 23, and a claw portion 41b that protrudes from both upper and lower ends of the base 41a in a direction away from the cross member 23 and is bent inward from the tip. It is formed approximately in a U-shape. The traveling body 52 has a disc shape and is rotatably fixed to the traveling portion 51. Since the outer peripheral part of the traveling body 52 is arranged in contact with the inside of the upper claw part 41b of the rail member 41, the second door body 20 can move in the left-right direction without separating from the first door body 10. can be done. In this embodiment, the running section 51 has another running body 52, and the outer peripheral part of this running body 52 is arranged so as to come into contact with the inside of the lower claw part 41b of the rail member 41. Thereby, the movement of the second door body 20 in the left-right direction becomes smooth. Furthermore, stoppers 42 are attached to both left and right ends of the rail member 41 to prevent the running portion 51 from coming off the longitudinal ends of the rail member 41. The rail member is attached over the longitudinal direction of the cross member 23, and the stoppers 42 are arranged at both left and right ends of the cross member. The mounting position of the stopper 42 may be at the edge of the rail member 41 or may be a position slightly toward the center from the edge, and can be appropriately regulated according to the running range of the running section 51.

FIG. 9 is an explanatory view of the main parts when the second door body 20 is moved in the left-right direction with respect to the first door body 10, and (a) shows the second door body 20 moved to the left side. (b) shows a state in which the second door body 20 has moved to the right. In the first door body 10, the running portions 51 are provided at positions separated from each other on the left and right sides of the upper and lower cross members 14, and in this embodiment, at both ends of the left side cross member 14. Therefore, as shown in (a), when the second door body 20 is moved to the left side X1, which is the entrance A side, the right stopper 42b comes into contact with the right running part 51b, and further movement to the left side is prevented. is regulated. At this time, the middle vertical member 22b and the vertical frame 13a located at the left end of the first door body 10 are configured to at least partially overlap when viewed from the front. Conversely, as shown in (b), when the second door body 20 is moved to the right, the left stopper 42a comes into contact with the left traveling portion 51a, and further movement to the left is restricted. At this time, the right vertical member 22c and the vertical member 13b located at the right end of the first door body 10 are configured to at least partially overlap when viewed from the front.

As a result, the entire inside of the right frame portion 25 of the frame body 21 overlaps with the first door body 10 in the movable range of the second door body 20 when viewed from the front. Note that the method of regulating the movement of the second door body 20 is not by the contact between the stopper 42 and the running part 51, but for example, as shown in (c), the movement of the second door body 20 is restricted by moving forward to the right side of the right vertical member 13b. A protruding stop member 43 may be attached to restrict movement of the second door body 20 to the right. In short, it is sufficient that the inside of the right frame portion 25 of the frame body 21 overlaps with the first door body 10 in the movable range of the second door body 20 when viewed from the front.

Next, a connection structure between the second door body 20 and the third door body 30 will be explained. FIG. 10 is an enlarged sectional view of a main part taken along line BB in FIG. In the second door body 20, a rail member 41 is attached to the front side of the upper and lower cross members 23, 23 along the longitudinal direction. On the other hand, the upper and lower cross members 34 of the third door body 30 are provided with a running section 51 having a running body 52 that can run on the rail member 41. As the traveling body 52 travels within the rail member 41, the third door body 30 can move in the left-right direction with respect to the second door body 20. Note that the relationship between the rail member 41 and the running section 51 is the same as described above, so the same members are given the same reference numerals and detailed explanations will be omitted.

FIG. 11 is an explanatory diagram of the main parts when the third door body 30 is moved in the left-right direction with respect to the second door body 20, and (a) shows the third door body 30 moved to the left side. (b) shows a state in which the third door body 30 has moved to the right. The running portions 51 are provided at positions separated from each other on the left and right sides of the upper and lower cross members 14 in the third door body 30, and in this embodiment, are provided at both ends of the right side cross member 34 of the two left and right cross members 34. ing. Therefore, as shown in (a), when the third door body 30 is moved to the left side X1, which is the entrance A side, the left stopper 42c comes into contact with the left running part 51c, and further movement to the left side is prevented. is regulated. At this time, the middle vertical member 22b and the right-most vertical member 33b of the third door body 30 are configured to at least partially overlap when viewed from the front. Conversely, as shown in (b), when the second door body 20 is moved to the right side X2, the stopper 42d on the right side comes into contact with the running part 51d on the right side, and further movement to the left side is restricted. . At this time, the left vertical member 22a and the left vertical frame 33a at the left end of the third door body 30 are configured to at least partially overlap when viewed from the front.

Thereby, the entire inside of the left frame portion 24 of the frame body 21 overlaps with the third door body 30 in the movable range of the second door body 20 when viewed from the front.

With these structures, in the movable range of the second door body 20 and the third door body 30, the inside of the left frame part 24 and the right frame part 25 of the second door body 20 is the same as that of the first door in front view. Passersby cannot pass through the inside of the left frame part 24 or the right frame part 25 because they overlap with the body 10 or the third frame body 31. No need to install.

As shown in FIG. 6(b), the second door body 20 has reinforcing members 26 attached to the corners of the left frame portion 24 and the right frame portion 25. Specifically, the reinforcing member 26 is attached diagonally so as to connect the two sides forming the corner, and the reinforcing member 26 and the two sides form a triangular shape in front view. This reinforces the left frame portion 24 and the right frame portion 25, making them difficult to deform. The reinforcing member 26 may have, for example, a so-called brace structure in which opposing corner portions are connected inside the left frame portion 24 and the left frame portion 24.

As shown in FIGS. 1 and 2, when the third door body 30 is moved to the left side, the left side of the third door body 30 is subjected to a load that hangs downward due to its own weight. With the reinforcement structure, the left frame part 24 overlaps with the third door body 30 in front view, the right frame part 25 connects with left frame part 24, and the first door body 10 overlaps with right frame part 25 in front view. This makes it possible to distribute the load and suppress the third door body 30 from sagging.

12 to 13 are explanatory diagrams showing other embodiments of the sliding door according to the present invention, FIG. 12 is a front view showing another embodiment of the sliding door according to the present invention, and (a) of FIG. An explanatory diagram of the first door body 10, and (b) an explanatory diagram of the third door body 30. The sliding door 300 according to this embodiment has features in the first door body 10 and the third door body 30 compared to the sliding door 100 shown in FIGS. 1 to 11, and these will be mainly explained. . Other than that, the same reference numerals are given to the same components as those already explained, and the explanation thereof will be omitted.

In the sliding door 300 according to this embodiment, the first door body 10 and the third door body 30 have reinforcing bars 60 and 70 at the upper and lower parts. First, as shown in FIG. 13(a), the first door body 10 is located inside a frame body formed in a rectangular shape by left and right vertical members 13 and horizontal members 14 arranged vertically at intervals. Door portions 17a and 17b to which panel bodies 12 are attached are arranged on the left and right and are connected to each other.

In this embodiment, the vertical member 13a on the left side of the door part 17a and the vertical member 13b on the right side of the door part 17b are fixed on the installation surface, so the door parts 17a and 17b are It is supported on a cantilever. Therefore, in the door parts 17a, 17b, the vertical members 13c, 13d located on the free end side may sag downward, and the first door body 10 may be deformed.

In addition, in this embodiment, since the running portions 51 are attached to both ends of the horizontal bars 14 at the upper and lower parts of the door portion 17a, when the above-mentioned sag occurs, the running portions 51 are attached to the center side of the first door body 10. Therefore, there is a possibility that movement of the second door section 20 connected via the running section 51 in the left-right direction may be hindered.

Therefore, reinforcing bars 60, 60 are respectively attached over the upper and lower parts of the two left and right connected door parts 17a, 17b, and are fixed to the vertical bars 13a, 13b and the horizontal bar 14. This makes it possible to suppress the above-mentioned sagging, thereby suppressing deformation of the first door body 10 and suppressing the occurrence of problems in movement of the second door part 20.

In addition, in this embodiment, an auxiliary support column is attached to the lower center of the first door body. Specifically, the upper end of the auxiliary support column is fixed to the reinforcing beam 60, and the lower end thereof is arranged on the installation surface. Thereby, it is possible to further suppress the above-mentioned door portions 17a, 17b from sagging downward.

Next, as shown in FIG. 13(b), the third door body 30 has a panel on the inside of a frame formed by left and right vertical members 33 and horizontal members 34 arranged vertically at intervals. Door parts 37a and 37b to which the body 32 is attached are arranged and connected on the left and right sides.

Furthermore, reinforcing bars 70, 70 are attached to the two left and right connected door parts 37a, 37b over the upper and lower parts. Specifically, the reinforcing bar 70 is fixed across the upper surface portions of the left and right horizontal bars on the upper side, and the reinforcing bar 70 is fixed across the lower surface portions of the left and right horizontal bars on the lower side. Thereby, in the left door portion 37a, sagging on the movable tip side can be suppressed.

Note that both ends of the lower portion of the third door body 30, specifically, both left and right ends of the lower reinforcing bar 70 are provided with casters 35 having wheels that roll on the installation surface. Thereby, in the left door portion 37a, sagging on the movable tip side can be further suppressed.

In this way, the first door body 10 and the third door body 30 are provided with reinforcing bars 60 and 70 across the upper and lower parts in the left and right direction, respectively. Thereby, problems such as deformation and sagging occurring in the first door body 10 and the third door body 30 can be suppressed.

Although the sliding door of the present invention has been described above based on the embodiment, the present invention is not limited to this embodiment. Various modifications that can be thought of by those skilled in the art without departing from the gist of the invention are also included within the scope of the invention.

According to the sliding door according to the present invention, the third door body 30 that closes the entrance/exit A can be opened and closed without a rail material for running on the installation surface or a hanging rail for hanging. Since it is unlikely to sag downward, it can be suitably used mainly at gates where construction vehicles etc. enter and exit, indoor work sites of factories, and places where work vehicles such as lifts enter and exit.

10 First door body 11 Frame body 12 Panel bodies 13, 13a, 13b, 13c, 13d Vertical members 14 Horizontal members 15 Fixing fittings 16 Support panels 17a, 17b Door portion 18 Reinforcement beam 20 Second door body 20a Lower end surface 21 Frame body 22a Left vertical member 22b Middle vertical member 22c Right vertical member 23 Cross member 24 Left frame portion 25 Right frame portion 26 Reinforcement member 30 Third door body 30a Lower end face 31 Frame body 32 Panel body 33, 33a, 33b Vertical member 34 Cross member 35 Caster 41 Rail member 41a Base 41b Claw portion 41b Projecting portion 42, 42a, 42b, 42c, 42d Stopper 51, 51a, 51b, 51c, 51d Running part 52 Running body 60, 70 Reinforcement crosspiece 100 Sliding door 200 Gate post A entrance/exit

Claims (3)

A sliding door in which a first door body, a second door body, and a third door body are stacked and connected in the thickness direction,
The first door body includes a rectangular frame body and a panel body attached to the frame body, and is fixed to the installation surface,
The second door body has a frame formed in a rectangular shape by left vertical members, middle vertical members, and right vertical members arranged at intervals from side to side, and horizontal members installed at intervals from top to bottom. Prepare your body,
The third door body includes a rectangular frame body and a panel body attached to the frame body,
The lower ends of the second door body and the third door body are spaced apart from the installation surface,
The frame of the second door body has a left frame portion on the doorway side and a right frame portion on the opposite side formed by the middle vertical member, and
In the movement range of the second door body and the third door body, when viewed in the thickness direction, the entire inside of the left frame portion overlaps with the third door body, and the entire inside of the right frame portion overlaps with the third door body. A sliding door characterized by being polymerized with the first door body. The sliding door according to claim 1, wherein the left frame portion and the right frame portion have reinforcing members attached to respective corners. The sliding door according to claim 1 or 2, wherein the first door body and the third door body are each provided with a reinforcing bar across the left and right sides of the upper and lower parts.

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