Roller device and sliding door

Abstract

To provide a sash roller device and a sliding door that allow a door roller to function effectively.SOLUTION: A sash roller device 1 comprises a door roller 12 and a sash roller housing 10 that holds the door roller 12 and is mounted in a mounting hole 54 in a sliding door body 52 of a sliding door 50. The sash roller housing 10 comprises an exposed surface where the door roller 12 is exposed in the vertical direction DV, a flat back side located opposite the exposed surface, a first end face with a horizontal insertion hole where a horizontal fastener can be inserted in the horizontal direction DH, located in the running direction of the door 12, and a second end face located opposite the first end face. The sash roller housing 10 is attached to the sliding door body 52 by a fixing member 25. Inside the sash roller housing 10, a cylindrical rectangular frame, an inner vertical moving part that holds the door roller 12 and slides in the vertical direction DV inside the cylindrical rectangular frame, and a coil spring that displaces the inner vertical moving part in the vertical direction DV with respect to the cylindrical rectangular frame are provided.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a roller device that holds a roller and is attached to a sliding door, and to a sliding door to which such a roller device is applied. [Background technology]

[0002] Sliding doors used as partitions in buildings are equipped with various types of roller devices. The roller device is located at the upper or lower end of a flat sliding door, and allows the rollers to run smoothly to allow the sliding door to function effectively. The roller device combines a member that performs circular motion, called a roller, with the end of a member that has a large surface area, called a sliding door, making the structure complicated, and various proposals have been made.

[0003] The present applicant has also filed a patent application for a roller device to stabilize the operation of a sliding door (see, for example, Patent Document 1). The technology described in Patent Document 1 acts to suppress the rebound of the sliding door, and has a significant effect. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-287065 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the relationship between the sliding door and the roller device is not limited to the technical scope of Patent Document 1, and various configurations have been proposed by combining various elemental technologies. Each proposal may have advantages and disadvantages. For this reason, further technological development is expected to meet various demands.

[0006] The present invention aims to provide a roller device that specifies the shape of a roller casing that holds the rollers and improves the component technologies of the internal structure that holds the rollers inside the roller casing to expand the range of motion of the rollers and allow the rollers to function effectively. Another object of the present invention is to provide a highly functional sliding door equipped with such a roller housing. [Means for solving the problem]

[0007] The door roller device according to the present invention is a door roller device including a door roller for smoothing the travel of a sliding door, and a door roller housing that holds the door roller and is attached to a mounting hole of a sliding door main body of the sliding door, the door roller housing including an exposed surface on which the door roller is exposed in a vertical direction, a flat rear side surface located on the opposite side of the exposed surface and on the rear side of the mounting hole, a first end surface located in the travel direction of the door roller and having a horizontal insertion hole into which a horizontal fastener can be inserted in the horizontal direction, a second end surface located on the opposite side of the first end surface and housed in the sliding door main body, a cylindrical rectangular frame body that is located between the exposed surface and the rear side surface and has a rectangular cross section in the horizontal direction, an inner vertical movement part that holds the door roller and slides vertically inside the cylindrical rectangular frame body, and a coil spring that displaces the inner vertical movement part in a vertical direction relative to the cylindrical rectangular frame body. The sliding door is provided with a fixing member that connects and fixes the roller housing to the sliding door main body when the roller housing is attached to the mounting hole, the fixing member being an L-shaped plate having a long side portion parallel to the exposed surface and a short side portion facing the back side surface with respect to the long side portion, the first end surface and the second end surface each having a plate-shaped recess recessed vertically from the exposed surface on the inside, the short side portion being inserted into the plate-shaped recess, and the long side portion having a vertical insertion hole into which a vertical fastener for fixing to the sliding door main body is inserted. , characterized in that Therefore, the roller device according to the present invention is attached to the mounting hole with good alignment, and the movable range of the roller is expanded with good precision, allowing the roller to function effectively.

[0008] In one embodiment of the door roller device according to the present invention, an axle of the door roller moves to a position away from the exposed surface in response to the sliding of the inner vertical moving part. 。 Books In one embodiment of the door roller device according to the present invention, the short side portion has sawtooth-shaped notches at both ends in the longitudinal direction of the plate, which frictionally come into contact with the plate-shaped recess. One embodiment of the door roller device of the present invention is characterized in that it is provided with a housing stopper that suppresses movement of the door roller housing toward the rear in the vertical direction of the mounting hole, and the housing stopper comprises a plate-shaped housing outer peripheral covering portion having a first opposing surface facing the first end face, a rear opposing surface facing the rear side surface, and a second opposing surface facing the second end face, and a plate-shaped peripheral extension hanging portion that extends horizontally from a lower end of the first opposing surface and a lower end of the second opposing surface and is hung on the peripheral edge portions around the opening of the mounting hole, and the peripheral extension hanging portions are clamped between the peripheral edge portions and the long side portion. One embodiment of the door roller device of the present invention is characterized in that the first end face and the first opposing face each have a first hook portion that hooks onto the other, and the second end face and the second opposing face each have a second hook portion that hooks onto the other. In one embodiment of the door roller device according to the present invention, the peripheral extension hooking portion is characterized in that one of the first opposing surface and the second opposing surface is shorter than the other.

[0009] The sliding door of the present invention is a sliding door comprising a sliding door main body located at an opening / closing location and a roller device attached to a mounting hole provided in the sliding door main body, and is characterized in that the roller device is any of the roller devices of the present invention. Therefore, the sliding door according to the present invention is easy to install because it employs the roller device according to the present invention, and the roller device easily enables the rollers to perform their functions, resulting in a functionally excellent sliding door. In one embodiment of the sliding door according to the present invention, the roller device is attached to the mounting hole located at any one of the upper end of the small edge of the sliding door main body, the lower end of the small edge of the sliding door main body, the upper end of the sliding door main body, and the lower end of the sliding door main body. Effect of the Invention

[0010] The roller device according to the present invention is attached with good alignment to the mounting hole of the sliding door, and has the effect of accurately expanding the movable range of the roller, thereby allowing the roller to function effectively. The sliding door according to the present invention is equipped with the roller device according to the present invention, and therefore has the effect of being easy to install, allowing the rollers to easily perform their functions, and resulting in a functionally excellent sliding door. [Brief description of the drawings]

[0011] [Figure 1] 1 is a schematic exploded perspective view showing a state before the roller device according to the first embodiment of the present invention is attached to a sliding door, with a roller housing and a fixing member separated from each other and viewed obliquely from above. FIG. [Diagram 2] 2 is an exploded schematic perspective view showing a schematic relationship between a roller housing and a fixing member of the roller device shown in FIG. 1 in a separated state, as viewed obliquely from above. FIG. [Diagram 3] 2 is a schematic front view showing a mutual relationship between a cylindrical rectangular frame body, an inner vertical moving part, and a coil spring provided in a roller housing of the roller device shown in FIG. 1 as seen through from the front. FIG. [Figure 4] FIG. 11 is an exploded schematic oblique view showing, from diagonally above, a schematic representation of the relationship between a roller device according to embodiment 2 of the present invention and a housing stopper that stops the roller device from moving toward the rear of the mounting hole, in a separated state. [Diagram 5] FIG. 5 is a schematic partial cross-sectional front view showing the separated state of the roller device shown in FIG. 4 before it is attached to the mounting hole of the sliding door main body, the cross section of the sliding door main body, a perspective of the roller device (roller housing), and the arrangement of the fixing members. [Figure 6] 6 is a schematic partial cross-sectional front view showing a state in which the roller device, the housing stopper, and the fixing member shown in FIG. 5 are attached to mounting holes. FIG. [Figure 7] FIG. 11 is an exploded schematic perspective view showing, in a separated state, a door roller device according to a third embodiment of the present invention before being attached to a sliding door main body (mounting hole), as viewed obliquely from above. [Figure 8] 8 is a schematic front view showing, in perspective, a main part of a sliding door to which the roller device shown in FIG. 7 is attached below. FIG. [Figure 9]8 is a schematic front view showing, in perspective, a main part of a sliding door to which the roller device shown in FIG. 7 is attached above. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, a roller device and a sliding door according to the present invention will be described with reference to the drawings (FIGS. 1 to 9). [Embodiment 1] (Figs. 1 to 3) A door roller device 1 according to a first embodiment of the present invention will be described with reference to Figs. 1 to 3. 1 is a schematic exploded perspective view showing a state of a door roller device 1 according to embodiment 1 of the present invention before it is attached to a sliding door 50, viewed obliquely from above with a roller housing 10 and a fixing member 25 separated. The door roller device 1 is connected and fixed to a mounting hole 54 of a sliding door main body 52 via the fixing member 25. 2 is an exploded schematic perspective view showing, from an obliquely upward direction, a relationship between the roller housing 10 and the fixing member 25 of the roller device 1 shown in FIG. 1 in a separated state. The fixing member 25 has a short side portion 255 inserted into the roller housing 10 and a long side portion 251 connected to the sliding door main body 52. Fig. 3 is a schematic front view showing, in a see-through manner from the front, the interrelationships between the cylindrical rectangular frame 20, the inner vertical moving part 21, and the coil spring 23 provided in the roller housing 10 of the roller device 1 shown in Fig. 1. The cylindrical rectangular frame 20, the inner vertical moving part 21, and the coil spring 23 constitute the main parts of the roller housing 10, and the inner vertical moving part 21 is moved by the coil spring 23 to adjust the roller displacement amount HW of the roller 12.

[0013] The roller device 1 of the present invention includes a roller 12 that allows the sliding door 50 to move smoothly, and a roller housing 10 that holds the roller 12 and is attached to a mounting hole 54 of a sliding door main body 52 of the sliding door 50. The roller housing 10 comprises an exposed surface 14 where the roller 12 is exposed in the vertical direction DV, a flat rear side surface 15 located opposite the exposed surface 14 and at the rear side of the mounting hole 54, a first end surface 16 located in the running direction of the roller 12 and having a horizontal insertion hole 259 into which a horizontal fastener 260 (see Figure 7) can be inserted in the horizontal direction DH, a second end surface 17 located opposite the first end surface 16 and stored in the sliding door main body 52, a cylindrical rectangular frame body 20 located between the exposed surface 14 and the rear side surface 15 and having a rectangular cross section in the horizontal direction DH, an inner vertical moving part 21 that holds the roller 12 and slides in the vertical direction DV inside the cylindrical rectangular frame body 20, and a coil spring 23 that displaces the inner vertical moving part 21 in the vertical direction DV relative to the cylindrical rectangular frame body 20.

[0014] The roller device 1 according to this embodiment includes a roller 12 and a roller housing 10 that attaches the roller 12 to a sliding door main body 52. ​​Because the rear side surface 15 of the roller housing 10 is flat, even if a mounting hole 54 that houses the roller housing 10 to be inserted into the sliding door main body 52 is formed with a router (bit), for example, and the bottom surface of the mounting hole 54 is flat, shape consistency is obtained, and dimensional problems are unlikely to occur. Also, the door roller 12 includes a cylindrical rectangular frame 20 and an inner vertical moving part 21 that slides in the vertical direction DV inside the cylindrical rectangular frame 20. This makes it easy to suppress play in the movement of the door roller 12 in the vertical direction DV. This makes it possible to increase the accuracy of the movement of the door roller 12 in the vertical direction DV. The movement displacement amount HS of the inner vertical moving part 21 is consistent with the door roller displacement amount HW of the door roller 12. In addition, since the inner vertical moving part 21 is provided with a coil spring 23 that displaces the inner vertical moving part 21 in the vertical direction DV relative to the cylindrical rectangular frame body 20, the amount of protrusion (sliding amount) of the door roller 12 protruding from the exposed surface 14 can be increased, making it easier to allow the door roller 12 to function effectively. That is, the roller device 1 according to the present invention is attached to the mounting hole 54 with good alignment, and the movable range of the roller 12 is expanded with good precision, making it easy for the roller 12 to function effectively. A linear compression spring is applied as the coil spring 23. The cylindrical rectangular frame 20 is composed of a surface along the first end face 16 and the second end face 17, and a surface along a flat portion (the plane of the drawing) connecting between the first end face 16 and the second end face 17.

[0015] In the door roller device 1, the axle 13 of the door roller 12 moves to a position further outward than the exposed surface 14 in response to the sliding of the inner vertical moving part 21. In other words, the axle 13 of the door roller 12 moves to a position further outward than the exposed surface 14 in response to the sliding of the inner vertical moving part 21, making it easier for the door roller 12 to function more effectively. The inner vertical moving part 21 supporting the axle 13 positions the axle 13 of the door roller 12 outwardly away from the exposed surface 14 in the vertical direction DV according to the strength of the coil spring 23. The position of the axle 13 of the door roller 12 can be easily adjusted by appropriately setting the strength of the coil spring 23 relative to the weight of the sliding door 50. The fixing member 25 in the roller device 1 connects and fixes the roller housing 10 to the sliding door main body 52 when the roller housing 10 is attached to the mounting hole 54. The fixing member 25 is an L-shaped plate having a long side portion 251 located parallel to the exposed surface 14 and a short side portion 255 facing the rear side surface 15 with respect to the long side portion 251. The first end surface 16 and the second end surface 17 each have a plate-shaped recess 18 and a plate-shaped recess 19 on their inner sides recessed in the vertical direction DV from the exposed surface 14, and the short side portion 255 is inserted into the plate-shaped recess 18 and the plate-shaped recess 19, respectively, and the long side portion 251 has a vertical insertion hole 252 into which a vertical fastener 253 for fixing to the sliding door main body 52 is inserted. Specifically, the vertical fastener 253 is preferably a countersunk screw. The roller housing 10 can be easily and reliably attached and fixed to the mounting hole 54 of the sliding door main body 52 by the fixing member 25. In addition, since the fixing member 25 has a plate-like L-shaped structure, the roller housing 10 can be easily fixed with a simple structure and can be easily provided. The short side portion 255 has sawtooth-like notches 256 at both ends in the plate-like length direction that rub against the plate-like recesses 18 and 19. As a result, the notches 256 of the short side portion 255 of the fixing member 25 rub against the plate-like recesses 18 and 19, which makes it easier to improve the friction strength between the fixing member 25 and the door roller housing 10 (mounting hole 54) and makes it easier to prevent the door roller housing 10 from coming out of the mounting hole 54 (fixing member 25, short side portion 255). The short side portion 255 is inserted into the plate-shaped recesses 18 and 19 so that the long side portion 251 contacts the exposed surface 14. This allows the fixing member 25 to reliably fix the roller housing 10 to the sliding door main body 52.

[0016] [Embodiment 2] (Figs. 4 to 6) A door roller device 1 according to a second embodiment of the present invention will be described with reference to Figures 4 to 6. Since the door roller device 1 is the same as that of the first embodiment, the same parts are given the same reference numerals and the description will be omitted as appropriate. FIG. 4 is an exploded schematic oblique view showing, from diagonally above, a schematic representation of the relationship between the roller device 1 according to embodiment 2 of the present invention and a housing stopper 30 that stops the roller device 1 from moving toward the rear of the mounting hole 54 in a separated state. Figure 5 is a schematic partial cross-sectional front view showing the separated state of the roller device 1 shown in Figure 4 before it is attached to the mounting hole 54 of the sliding door main body 52, illustrating a cross-section of the sliding door main body 52, a perspective of the roller device 1 (roller housing 10), and the arrangement of the fixing member 25. FIG. 6 is a schematic partial cross-sectional front view showing a state in which the roller device 1, the housing stopper 30, and the fixing member 25 shown in FIG.

[0017] The door roller device 1 is equipped with a housing stopper 30 that suppresses movement of the door roller housing 10 toward the rear in the vertical direction DV of the mounting hole 54, and the housing stopper 30 is equipped with a plate-shaped housing outer peripheral covering portion 31 having a first opposing surface 32 facing the first end face 16, a rear opposing surface 33 facing the rear side surface 15, and a second opposing surface 34 facing the second end face 17, and plate-shaped peripheral extension hanging portions 36 that extend from the lower ends of the first opposing surface 32 and the second opposing surface 34 in the horizontal direction DH and are hung on peripheral end portions 56 around the opening of the mounting hole 54, and the peripheral extension hanging portions 36 are clamped between the peripheral end portions 56 and the long side portion 251. The housing stopper 30 comprises a plate-shaped housing outer peripheral covering portion 31 having a first opposing surface 32 facing the first end face 16, a rear side opposing surface 33 facing the rear side surface 15, and a second opposing surface 34 facing the second end face 17, and a plate-shaped peripheral extension hanging portion 36 that is hung from the housing outer peripheral covering portion 31 to a peripheral end portion 56 around the opening of the mounting hole 54. It is preferable that the housing outer periphery covering portion 31 contacts the opposing surface of the roller housing 10. This allows for high-precision fixing. The peripheral extension hanging portion 36 is clamped between the peripheral end portion 56 and the long side portion 251 of the fixing member 25, so that even if the hole depth HH of the mounting hole 54 is greater than the housing height HC of the roller housing 10, the roller housing 10 is prevented from moving toward the rear, and the exposed surface 14 of the roller housing 10 and the peripheral extension hanging portion 36 are fixed at a predetermined position (peripheral end portion 56), making it easy to ensure the reliability of the roller device 1 and the sliding door 50.

[0018] The hole depth HH of the mounting hole 54 may become deeper than necessary if the router (bit) is used excessively. Even in such a case, the roller housing 10 can be fixed to the peripheral edge 56 without moving by using the housing stopper 30 in combination. The roller housing 10 is fixed at the short side portion 255 inserted into the plate-shaped recess 18 and the plate-shaped recess 19. Therefore, the long side portion 251 integral with the short side portion 255 is connected and fixed to the sliding door main body 52 via the vertical insertion hole 252 and the vertical fastener 253. Therefore, the roller housing 10 is fixed to the mounting hole 54 with high precision. In the roller housing 10 and the housing stopper 30, the first end face 16 and the first opposing face 32 facing each other are provided with a first hook portion 16h and a first hook portion 32h, respectively, which hook onto each other, and the second end face 17 and the second opposing face 34 facing each other are provided with a second hook portion 17h and a second hook portion 34h, respectively, which hook onto each other. The first end face 16 and the second end face 17 have a first opposing surface 32 and a second opposing surface 34 facing each other, and are provided with a first hook portion 16h, a first hook portion 32h and a second hook portion 17h, a second hook portion 34h that hook onto each other, so that the first end face 16 and the first opposing surface 32 are interlocked with each other, and the second end face 17 and the second opposing surface 34 are interlocked with each other. As a result, the roller housing 10 is securely held by the housing outer periphery covering portion 31 and fixed to the housing outer periphery covering portion 31, so movement toward the back of the mounting hole 54 is suppressed. It is preferable that either the first opposing surface 32 or the second opposing surface 34 of the peripheral extension hook portion 36 is shorter than the other. It is preferable that one of the first opposing surface 32 or the second opposing surface 34 of the peripheral extension hook 36 is shorter than the other. In the horizontal direction DH of the mounting hole 54, the peripheral extension hook 36 can be reliably fixed to the mounting hole 54 by contacting the shorter one of the first opposing surface 32 or the second opposing surface 34 with the mounting hole 54, which makes it easy to improve the clamping strength and reliability.

[0019] [Embodiment 3] (Figs. 7 to 9) A roller device and a sliding door according to a third embodiment of the present invention will be described with reference to Figures 7 to 9. The roller device 1 and the sliding door 50 are the same as those in the first and second embodiments, so the same reference numerals are used for the similar parts and the description will be omitted as appropriate. FIG. 7 is an exploded schematic perspective view showing, in a separated state, a state before the door roller device 1 according to the third embodiment of the present invention is attached to the sliding door main body 52 (attaching hole 54), as viewed obliquely from above. FIG. 8 is a schematic front view showing in perspective a main part of the sliding door 50 to which the roller device 1 shown in FIG. 7 is attached below. FIG. 9 is a schematic front view showing in perspective a main part of the sliding door 50 to which the roller device 1 shown in FIG. 7 is attached above. In the first and second embodiments, the roller device 1 has been described as being attached to the mounting hole 54 (sliding door main body 52, sliding door 50) via the fixing member 25 and further via the housing stopper 30. In these cases, the mounting hole 54 is often opened not at the edge of the sliding door 50 but at the midpoint via a router (bit). In contrast to this, in this embodiment, a mounting hole 54 is provided at the small edge of the sliding door 50, as an example.

[0020] 2, the roller device 1 (roller housing 10) has a horizontal insertion hole 259 on the first end surface 16. A horizontal fastener 260 is inserted into the horizontal insertion hole 259 and is connected to the sliding door main body 52. ​​The roller housing 10 has a back side surface 15 that is a flat surface, so that it can be attached with good alignment even if the mounting hole 54 is formed with a router (bit) and the bottom surface is flat. The roller device 1 in FIG. 8 is attached to the lower guide of the sliding door main body 52, and the roller device 1 in FIG. The detailed configuration of the roller device 1 is similar to that of the roller device 1 according to the first and second embodiments, and therefore a detailed description thereof will be omitted. As described above, the sliding door 50 in this embodiment is a sliding door 50 comprising a sliding door main body 52 located at an opening / closing location and a roller device 1 attached to a mounting hole 54 provided in the sliding door main body 52, and the roller device 1 is the roller device 1 described in any one of embodiment 1, embodiment 2 or embodiment 3. The sliding door 50 according to the present invention uses the roller device 1 according to the present invention, and therefore is easy to install. The roller device 1 allows the rollers 12 to easily perform their functions, resulting in a sliding door 50 with excellent functionality. In the sliding door 50, the roller device 1 is attached to a mounting hole located at the upper end of the small edge of the sliding door main body 52, the lower end of the small edge of the sliding door main body 52, the upper end of the sliding door main body, or the lower end of the sliding door main body. Note that the small edge here refers to the door tip and door tail end of the sliding door main body 52. Specifically, the roller device 1 is attached to a mounting hole 54 located at any one of the upper end of the small edge of the sliding door main body 52 (FIG. 9), the lower end of the small edge of the sliding door main body 52 (FIGS. 7 and 8), the upper end of the sliding door main body 52 (illustration is omitted as it is shown symmetrically with respect to the next lower end), and the lower end of the sliding door main body 52 (FIGS. 1, 5, and 6). That is, the roller device 1 according to the present invention can be effectively applied as either an upper guide or a lower guide in the sliding door main body 52. ​​That is, the roller device 1 can be effectively applied as a guide roller. [Industrial Applicability]

[0021] The roller device 1 and sliding door 50 according to the present invention can effectively utilize the function of the rollers and improve the convenience and reliability of the roller device 1 and sliding door 50 used as part of a building, and thus have great industrial applicability. [Explanation of symbols]

[0022] 1 Roller device 10 Roller housing 12 Doors 13 Axles 14 Exposed surface 15 Back side 16 First end surface 16h First hook 17 Second end face 17h Second hook 18 Plate-shaped recess 19 Plate-shaped recess 20 Cylindrical rectangular frame 21 Inner vertical moving part 23 Coil spring 25 Fixing member 251 Long side 252 Insertion hole 253 Vertical Fasteners 255 Short side 256 Cut 259 Horizontal insertion hole 260 Horizontal fasteners 30 Housing stopper 31 Housing outer periphery coating 32 First opposing surface 32h First hook 33 Back facing surface 34 Second opposing surface 34h Second hook 36 Periphery extension hook 50 Sliding Door 52 Sliding door body 54 Mounting holes 56 Peripheral edge DH Horizontal DV Vertical HC Housing Height HH Hole Depth HS Displacement HW Wheel displacement

Claims

1. A door roller device including a door roller for smoothing the travel of a sliding door and a door roller housing that holds the door roller and is attached to a mounting hole of a sliding door body of the sliding door, the roller housing comprises an exposed surface where the roller is exposed in a vertical direction, a flat rear side surface located opposite to the exposed surface and at the rear side of the mounting hole, a first end surface located in the running direction of the roller and having a horizontal insertion hole into which a horizontal fastener can be inserted in the horizontal direction, a second end surface located opposite to the first end surface and housed in the sliding door main body, a cylindrical rectangular frame body located between the exposed surface and the rear side surface and having a rectangular cross section in the horizontal direction, an inner vertical moving part that holds the roller and slides vertically inside the cylindrical rectangular frame body, and a coil spring that displaces the inner vertical moving part in a direction vertical to the cylindrical rectangular frame body, a fixing member that connects and fixes the roller housing to the sliding door main body when the roller housing is attached to the mounting hole, The fixing member is an L-shaped plate having a long side portion parallel to the exposed surface and a short side portion extending toward the rear surface side relative to the long side portion, The first end surface and the second end surface each have a plate-shaped recess on the inside thereof that is recessed vertically from the exposed surface, the short side portion is inserted into the plate-shaped recess, and the long side portion has a vertical insertion hole into which a vertical fastener to be fixed to the sliding door main body is inserted. A door roller device characterized by the above.

2. A door roller device as described in claim 1, The short side portion has sawtooth cuts at both ends in the longitudinal direction of the plate that rub against the plate-shaped recess. A door roller device characterized by the above.

3. A door roller device according to claim 1 or claim 2, A housing stopper is provided to suppress movement of the door roller housing toward the rear side in a vertical direction of the mounting hole, the housing stopper includes a plate-shaped housing outer peripheral covering portion having a first opposing surface facing the first end surface, a rear opposing surface facing the rear side surface, and a second opposing surface facing the second end surface, and plate-shaped peripheral extension hook portions extending horizontally from lower ends of the first opposing surface and the second opposing surface and hooked onto peripheral edge portions around the opening of the mounting hole, The peripheral extension portion is sandwiched between the peripheral end portion and the long side portion. A door roller device characterized by the above.

4. A door roller device as described in claim 3, The first end surface and the first opposing surface each include a first hook portion that hooks onto each other, and the second end surface and the second opposing surface each include a second hook portion that hooks onto each other. A door roller device characterized by the above.

5. A door roller device according to claim 3 or claim 4, The peripheral extension portion is shorter on one side of the first opposing surface or the second opposing surface than on the other side. A door roller device characterized by the above.

6. A door roller device according to any one of claims 1 to 5, The axle of the door roller moves to a position away from the exposed surface in response to the sliding of the inner vertical moving part. A door roller device characterized by the above.

7. A sliding door including a sliding door body located at an opening / closing location and a roller device attached to a mounting hole of the sliding door body, The sliding door, wherein the roller device is a roller device according to any one of claims 1 to 6.

8. A sliding door as described in claim 7, characterized in that the wheel device is attached to the mounting hole located at either the upper end of the edge of the sliding door main body, the lower end of the edge of the sliding door main body, the upper end of the sliding door main body, or the lower end of the sliding door main body.

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