Sliding door

Abstract

The present invention provides a sliding door that can suppress the possibility of the door body tipping over even when external forces such as earthquakes or tsunamis are applied to the door body. [Solution] The sliding door 1 is configured such that the door body 2 can slide on a pair of rails 3, 3. The door body 2 is equipped with wheels 23, 23 that roll on the upper surfaces of the pair of rails 3, 3, and a first regulating member 40 and a second regulating member 50 that restrict the tilt of the door body 2 relative to the pair of rails 3, 3. When the door body 2 tilts, the regulating members 40, 50 come into contact with one of the rails 3, thereby restricting the tilt of the door body 2.

Description

Technical Field

[0001] This disclosure relates to a sliding door in which a door body slides on a rail.

Background Art

[0002] Conventionally, a sliding door has been known in which a door body is provided on the upper surface of a rail and can slide on the rail (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the sliding door as described in Patent Document 1, a configuration capable of suppressing the possibility of the door body falling over even when an external force due to an earthquake, a tsunami, or the like is applied to the door body has been required. Therefore, an object of the present disclosure is to solve the above-mentioned problems.

Means for Solving the Problems

[0005] A sliding door according to a first aspect of the present invention is a sliding door in which a door body is slidable on a pair of rails, the door body includes wheels that roll on the upper surfaces of the pair of rails, and a restricting member that restricts the inclination of the door body with respect to the pair of rails, and when the door body is inclined, the restricting member abuts against one of the rails to restrict the inclination of the door body.

[0006] According to the sliding door according to the first aspect, it is possible to suppress the possibility of the door body falling over.

[0007] A sliding door according to a second aspect of the present invention is a sliding door according to the first aspect, wherein the rail has, in a cross-sectional view perpendicular to the longitudinal direction, an upper widened portion and a narrow portion below the widened portion that is smaller in width than the widened portion, and the regulating member comprises a main body portion extending downward from the door body near one of the rails and an insertion portion extending from the main body portion toward one of the rails, wherein the insertion portion is inserted below the widened portion and restricts the tilt of the door body by contacting the lower surface of the widened portion on one of the rails when the door body is tilted.

[0008] According to the sliding door relating to the second viewpoint described above, the possibility of the door body tipping over can be suppressed by the insertion part contacting the lower surface of the widened part.

[0009] A sliding door according to a third aspect of the present invention is a sliding door according to the second aspect, wherein the regulating member is provided near the wheel.

[0010] According to the sliding door relating to the third point described above, the regulating member can be easily attached and detached.

[0011] A sliding door according to a fourth aspect of the present invention is a sliding door according to the third aspect, wherein the wheels are provided in pairs corresponding to the pair of rails, the pair of wheels are connected via an axle, the door body includes an axle case that rotatably supports the axle, and the regulating member is provided on the axle case.

[0012] According to the sliding door relating to the fourth point of view described above, the regulating member can be easily attached to and detached from the axle case.

[0013] A sliding door according to a fifth aspect of the present invention is a sliding door according to the third aspect, wherein the wheels are provided in pairs corresponding to the pair of rails, the pair of wheels are connected via an axle, the door body includes an axle case that rotatably supports the axle, the axle case is provided on the sliding end face of the door body, and the regulating member is provided on the end face of the door body.

[0014] According to the sliding door relating to the fifth point of view described above, the regulating member can be easily attached to and detached from the end face of the door body.

[0015] A sliding door according to the sixth aspect of the present invention is a sliding door according to any one of the first or fifth aspects described above, wherein the regulating member is provided on one side and / or the other side in the thickness direction of the door body.

[0016] According to the sliding door relating to the sixth point described above, the stability of the door itself can be increased.

[0017] A sliding door according to the seventh aspect of the present invention is a sliding door according to the sixth aspect, wherein the regulating member is provided on one end and / or the other end of the door body in the sliding direction.

[0018] According to the sliding door relating to the seventh point described above, the stability of the door itself can be further enhanced. [Brief explanation of the drawing]

[0019] [Figure 1] Front view showing a sliding door according to one embodiment. [Figure 2] A perspective view showing the wheels of a sliding door. [Figure 3] Cross-sectional view of line XX in Figure 1. [Figure 4] (a) and (b) are exploded perspective views of the first and second restricting members, respectively. [Figure 5] (a) to (c) are plan views showing the arrangement of the regulating members in the first to third embodiments, respectively. [Modes for carrying out the invention]

[0020] First, with reference to FIG. 1, a sliding door 1 according to an embodiment of the present invention will be described. In the present embodiment, the right side in FIG. 1 is defined as the right side of the sliding door 1, and the front side of the paper surface in FIG. 1 is defined as the front of the sliding door 1. As shown in FIG. 1, the sliding door 1 according to the present embodiment is provided so as to be able to open and close an opening Ba of a structure B erected on the ground.

[0021] As shown in FIG. 1, a groove portion G is formed in the lower front side of the opening Ba, and a pair of two rails 3·3 (see FIGS. 2 and 3) are laid along the left-right direction on the bottom surface of the groove portion G. As shown in FIG. 3, in the present embodiment, the rail 3 is formed with a base portion 31 that is wider at the lower side, an upper widened portion 32, and a narrow portion 33 that is smaller in width dimension than the widened portion 32 below the widened portion 32 in a cross-sectional view orthogonal to the longitudinal direction. That is, the rail 3 is formed as a so-called "flat-bottom rail" in which the base portion 31 and the widened portion 32 are connected by the narrow portion 33.

[0022] In the sliding door 1 according to the present embodiment, the opening Ba is opened and closed by the door body 2 sliding left and right along the rails 3·3. In FIG. 1, the door body 2 in the open state (the state where the door body 2 is displaced rightward from the front of the opening Ba) is depicted by a solid line, and the door body 2 in the closed state (the state where the door body 2 is located in front of the opening Ba) is depicted by a two-dot chain line.

[0023] As shown in FIG. 1, a cover member C for accommodating the upper part of the door body 2 is assembled to the structure B. Further, a guide rail R is fixed to a position above the closed door body 2 on the upper side of the opening Ba in the structure B. The guide rail R guides the rolling of rollers 25·25 provided on the upper surface of the door body 2 on its inner surface.

[0024] The door body 2 is formed in a plate shape having a thickness in the front-rear direction, which is composed of a combination of metal members. Specifically, the door body 2 is configured by assembling steel plates to a door frame formed of steel materials of various types and sizes, such as a plurality of H-shaped steels and L-shaped steels.

[0025] The door body 2 is equipped with a drive unit consisting of a motor (not shown). The motor in the drive unit drives the wheels 23 (described later), allowing the door body 2 to slide left and right along the rails 3, 3. The drive unit can also be configured with a hydraulic mechanism, an internal combustion engine, a manual mechanism such as a handle, instead of a motor.

[0026] In the sliding door 1 according to this embodiment, the door body 2 is provided with axle cases 21 (right case 21R and left case 21L) on both the left and right sides. The axle cases 21 support the axles connecting a pair of wheels 23-23 (right wheels 23R-23R and left wheels 23L-23L, see Figure 5(a)). The wheels 23-23 are able to roll on the upper surface of a pair of rails 3-3 by having their axles supported by the axle cases 21. The axle cases 21 and the wheels 23-23 are covered by wheel covers 22 (right cover 22R and left cover 22L).

[0027] The axle cases 21 and wheels 23-23 provided on the door body 2 employ almost identical configurations on the left and right sides. Therefore, in the following explanation, the right-side case 21R and right-side wheels 23R-23R provided on the right side will be described in detail, while the left-side case 21L and left-side wheels 23L-23L will not be described in detail.

[0028] The sliding door 1 according to this embodiment is configured with regulating members (first regulating member 40 and second regulating member 50, hereinafter collectively referred to as "regulating members 40 and 50") that restrict the inclination of the door body 2 with respect to a pair of rails 3 and 3. In the sliding door 1, as shown in Figure 2, the regulating members 40 and 50 are provided near the wheels 23 and 23. More specifically, as shown in Figure 5(a), one first regulating member 40 and one second regulating member 50 are provided for each of the four wheels 23, for a total of eight regulating members 40 and 50. In this embodiment, the regulating members 40 and 50 can be provided on the door body 2 with the outside exposed, making it possible to easily attach and detach the regulating members 40 and 50.

[0029] In this embodiment, each of the restricting members 40 and 50 is constructed by assembling multiple iron members by welding, bonding, or joining with bolts and nuts. It is also possible to form the restricting members 40 and 50 from resin materials or the like.

[0030] In the sliding door 1 according to this embodiment, as shown in Figure 2, the first regulating member 40 is provided on the support portion 24 (right support portion 24R and left support portion 24L) of the axle case 21. As shown in Figure 4(a), the first regulating member 40 is composed of a fixing member 41 and an insertion member 42.

[0031] As shown in Figure 4(a), the fixing member 41 is formed in a U-shape in plan view. The fixing member 41 is composed of a fixing portion 41a, a connecting portion 41b, and a holding portion 41c. The fixing portion 41a is fixed to the support portion 24. The connecting portion 41b extends in a direction perpendicular to the fixing portion 41a. The holding portion 41c is formed by bending at the tip of the connecting portion 41b.

[0032] An insertion member 42 is assembled to the holding portion 41c of the fixing member 41. As shown in Figure 4(a), the insertion member 42 is composed of a main body portion 42a, ribs 42b-42b, a restricting portion 42c, and an insertion portion 42d. The main body portion 42a is assembled to the holding portion 41c and extends downward from the door body 2 near the rail 3. The restricting portion 42c is connected to the main body portion 42a via ribs 42b-42b. The restricting portion 42c is formed in a U-shape when viewed from the side, and the insertion portion 42d extends from the main body portion 42a toward the rail 3 on its lower side.

[0033] As described above, according to the sliding door 1 of this embodiment, the first regulating member 40 is provided on the support portion 24 of the axle case 21. This allows the first regulating member 40 to be exposed on the axle case 21, making it possible to easily attach and detach the first regulating member 40 to and from the axle case 21.

[0034] In the sliding door 1 according to this embodiment, as shown in Figure 2, the second regulating member 50 is provided on both the left and right end faces in the sliding direction of the door body 2, which are the sides where the axle case 21 is located. As shown in Figure 4(b), the second regulating member 50 is composed of a fixing member 51 and an insertion member 52. In this embodiment, the insertion member 42 of the first regulating member 40 and the insertion member 52 of the second regulating member 50 are formed to the same shape. That is, the manufacturing cost of the regulating members 40 and 50 is suppressed by using common materials for the insertion members 42 and 52.

[0035] As shown in Figure 4(b), the fixing member 51 is formed in an L-shape in plan view. The fixing member 51 is composed of a fixing portion 51a and a holding portion 51b. The fixing portion 51a is fixed to the door body 2. The holding portion 51b extends in a direction perpendicular to the fixing portion 51a.

[0036] An insertion member 52 is assembled to the holding portion 51b of the fixing member 51. As shown in Figure 4(b), the insertion member 52 is composed of a main body portion 52a, ribs 52b-52b, a restricting portion 52c, and an insertion portion 52d. The main body portion 52a is assembled to the holding portion 51b and extends downward from the door body 2 near the rail 3. The restricting portion 52c is connected to the main body portion 52a via ribs 52b-52b. The restricting portion 52c is formed in a U-shape when viewed from the side, and the insertion portion 52d extends from the main body portion 52a toward the rail 3 on its lower side.

[0037] As described above, in the sliding door 1 according to this embodiment, the second restricting member 50 is provided on both the left and right end faces of the door body 2 on which the axle case 21 is provided. As a result, the second restricting member 50 can be exposed on the door body 2, making it possible to easily attach and detach the second restricting member 50 to the end faces of the door body 2.

[0038] As shown in Figures 2 and 3, when the first restricting member 40 (and the second restricting member 50, and so on) is assembled to the door body 2, the insertion portion 42d is inserted below the widening portion 32 on the rail 3. As a result, when the door body 2 tilts, the insertion portion 42d comes into contact with the lower surface of the widening portion 32 on the rail 3, thereby restricting the tilt of the door body 2. In other words, according to the sliding door 1 of this embodiment, even if an external force such as an earthquake or tsunami is applied to the door body 2, the insertion portion 42d comes into contact with the lower surface of the widening portion 32, thereby suppressing the possibility of the door body 2 tipping over.

[0039] In this embodiment, the insertion portions 42d and 52d of the restricting members 40 and 50 are designed to contact the lower surface of the widened portion 32 of the rail 3 when the door body 2 is tilted by 1 degree. This makes it possible to restrict the tilt of the door body 2 before the flange portion of the wheel 23 rides up onto the rail.

[0040] In the sliding door 1 according to the present invention, the regulating members 40 and 50 may be provided anywhere on one side and / or the other side in the thickness direction of the door body 2. Furthermore, the regulating members 40 and 50 may be provided anywhere on one end and / or the other end in the sliding direction (left-right direction in this embodiment) of the door body 2.

[0041] For example, as shown in the embodiment in Figure 5(a), the regulating members 40 and 50 can be provided on both one side and the other side in the thickness direction of the door body 2, and on both one end and the other end in the sliding direction of the door body 2. Also, as shown in the modified example in Figure 5(b), the second regulating member 50 can be provided only on both one side and the other side in the thickness direction of the door body 2, and on both one end and the other end in the sliding direction of the door body 2. Furthermore, as shown in another modified example in Figure 5(c), the second regulating member 50 can be provided only on one side (rear side) in the thickness direction of the door body 2, and on both one end and the other end in the sliding direction of the door body 2.

[0042] As described above, depending on how the door body 2 is used (such as the presence or absence of adjacent walls and the shape of the guide), the regulating members 40 and 50 can be installed at appropriate locations. This allows the stability of the door body 2 to be appropriately enhanced according to how it is used.

[0043] [Other variations] The above embodiment can be modified as appropriate, as shown in the following modifications. Each modification may be applied in combination with other modifications, provided that no inconsistencies arise.

[0044] In the sliding door according to the present invention, the shape of the regulating member can be configured in other ways if the possibility of the door body tipping over can be suppressed. For example, it is possible to configure the regulating member to engage with a rail having a U-shaped cross-section. Furthermore, in the sliding door according to the present invention, it is also possible to provide the regulating member at a location away from the wheels (for example, in the center of the door body). [Explanation of Symbols]

[0045] 1. Sliding door 2. Door body 3 rails 21 Axle case 22 Wheel cover 23 Wheel 24 Support part 25 Laura 31 Base section 32 Narrow section 33 Widening section 40 First regulating member 41 Fixing member 41a Main unit 41b Connecting unit 41c Holding part 42 Insertion member 42a Connection part 42b Rib 42c Regulating section 42d Insertion section 50 Second regulating member 51 Fixing member 51a Main unit 51b Holding unit 52 Insertion member 52a Connection part 52b Rib 52c Regulating section 52d Insertion section B Structure Ba Opening C Cover member R Guide rail G groove

Claims

1. A sliding door in which the door body can slide along a pair of rails, The door body comprises wheels that roll on the upper surface of the pair of rails, and a regulating member that restricts the inclination of the door body with respect to the pair of rails. A sliding door in which the tilting of the door body is restricted when the door body tilts, by the regulating member contacting one of the rails.

2. In a cross-sectional view perpendicular to the longitudinal direction, the rail is formed with an upper widened section and a lower narrowed section having a smaller width than the widened section. The regulating member comprises a main body portion extending downward from the door body near one of the rails, and an insertion portion extending from the main body portion toward one of the rails. The sliding door according to claim 1, wherein the insertion portion is inserted below the widening portion, and when the door body tilts, the insertion portion contacts the lower surface of the widening portion on one of the rails, thereby restricting the tilt of the door body.

3. The sliding door according to claim 2, wherein the regulating member is provided near the wheel.

4. The wheels are provided in pairs corresponding to the pair of rails. The pair of wheels are connected via an axle, The door body includes an axle case that rotatably supports the axle, The sliding door according to claim 3, wherein the regulating member is provided on the axle case.

5. The wheels are provided in pairs corresponding to the pair of rails. The pair of wheels are connected via an axle, The door body includes an axle case that rotatably supports the axle, The axle case is provided on the end face in the sliding direction of the door body, The sliding door according to claim 3, wherein the regulating member is provided on the end face of the door body.

6. The sliding door according to any one of claims 1 to 5, wherein the regulating member is provided on one side in the thickness direction of the door body and / or on the other side.

7. The sliding door according to claim 6, wherein the regulating member is provided on one end and / or the other end of the door body in the sliding direction.

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