Top-railed sliding door

Abstract

To provide a top-railed sliding door capable of facilitating maintenance such as detachment and repair of a closer.SOLUTION: The top-railed sliding door comprises: a guide rail 2 provided on a top part of a frame; a door end side sash roller 6 and a door tail side sash roller 7 that roll along the guide rail 2, from which a sliding door 3 is suspended; and a closer 8 built in the top part of the sliding door 3, in which a driving cord 9 pulled out from a driving part is fixed on the top part of the frame. A main body case 11 of the closer 8 can be stored in a storage recess part 3a formed on a corner part of the sliding door 3, which opens upward and toward a door end side. A pull-out start position P of the driving cord 9 of the closer 8 from the driving part is provided closer to a door end side than a shaft 34 that supports the sliding door 3 of the door end side sash roller 6. The main body case 11 of the closer 8 is installed so as to be detachable from the sliding door 3, while the sliding door 3 is suspended from the door end side sash roller 6.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a top-hung sliding door equipped with a closer that automatically closes an open sliding door. [Background technology]

[0002] Typically, a top-hung sliding door comprises a guide rail installed at the top of the frame, and leading and trailing rollers that roll along the guide rail and from which the sliding door is suspended. A closer is provided to automatically close the open sliding door. The closer comprises a drive unit from which a drive rope is pulled out and a main body case that houses the drive unit. The drive unit comprises a reel around which the drive rope is wound and a spring that rotates the reel. When the sliding door is opened and the drive rope is pulled out, the spring is wound up and the spring force is accumulated. When the sliding door is released, the drive rope is pulled back by the spring force, and the sliding door automatically closes.

[0003] There are two types of closers: one in which the main case is attached to the frame and the drive cord pulled out from the drive unit is attached to the sliding door, and one in which the main case is attached to the sliding door and the drive cord pulled out from the drive unit is attached to the frame.

[0004] Patent Document 1 discloses a top-hung sliding door in which a main body case is attached to the sliding door and a drive rope pulled out from a drive unit is attached to a frame. In the top-hung sliding door of Patent Document 1, a storage recess that opens to the top and door edge is formed in the corner of the sliding door, and a main body case of the closer is removably attached to this storage recess. Then, a door roller storage section that opens to the top and door edge is formed in the main body case, and a door roller support member is removably attached to this door roller storage section. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-63764 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the top-hung sliding door of Patent Document 1, if there is a problem with the internal mechanism of the closer and it needs to be repaired, the support member for the door roller must first be removed from the main body case, and then the main body case must be removed from the sliding door.As a result, the closer cannot be removed from the sliding door while the sliding door is hanging on the door roller, and maintenance such as removing the closer and repairing it requires a lot of effort.

[0007] The present invention has been made in consideration of the above problems, and aims to provide a top-hung sliding door that allows for easy maintenance such as removal and repair of the closer. [Means for solving the problem]

[0008] In order to solve the above problems, one aspect of the present invention is a top-hung sliding door comprising a guide rail arranged on the top of a frame, leading-side and trailing-side rollers that roll along the guide rails and from which a sliding door is hung, and a closer that is built into the top of the sliding door and has a drive cord pulled out from a drive unit fixed to the top of the frame, wherein the main body case of the closer can be stored in a storage recess that is formed in a corner of the sliding door and opens to the top and leading-side, the position at which the pull-out of the drive cord of the closer from the drive unit is started is positioned on the leading-side side of the axis that supports the sliding door of the leading-side roller, and the main body case of the closer is removable from the sliding door when the sliding door is hung on the leading-side roller. [Effects of the Invention]

[0009] According to the present invention, the closer main body case can be removed from the sliding door while the sliding door is suspended from the door-leading door roller. Therefore, the closer can be easily removed and subjected to maintenance such as repairs. [Brief explanation of the drawings]

[0010] [Figure 1]1 is a front view of an overhead sliding door according to an embodiment of the present invention. [Figure 2] FIG. 1 is a cross-sectional view taken along the sliding door of a top-hung sliding door. [Figure 3] FIG. 2 is an enlarged view of the main parts of the overhead sliding door. [Figure 4] FIG. 2 is an exploded perspective view of the main parts of the overhead sliding door. [Figure 5] FIG. 10 is an enlarged cross-sectional view showing the installation state of the closer. [Figure 6] FIG. 10 is a view showing the top-hung sliding door when the sliding door is in the closed position. [Figure 7] FIG. 10 is a view showing the top-hung sliding door when the sliding door is in the open position. [Figure 8] 10(a), 10(b), and 10(c) are diagrams showing the change in the inclination angle of the driving cable. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a top-hung sliding door according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the top-hung sliding door of the present invention can be embodied in various forms and is not limited to the embodiments described herein. The present embodiment is provided with the intention of enabling those skilled in the art to fully understand the invention by fully disclosing the specification.

[0012] FIG. 1 shows a front view of a top-hung sliding door according to an embodiment of the present invention. Reference numeral 1 denotes a frame for a building, furniture, storage facility, or the like. A guide rail 2 is disposed on the upper part (lintel) of the frame 1. A top-hung sliding door 3 is provided so as to be movable left and right along the guide rail 2. The left half of the frame 1 is an opening 13, and the right half is a wall (not shown). The sliding door 3 moves left to close the opening 13 and moves right to open the opening 13. When the sliding door 3 moves right, it is housed in a door pocket, but it may also be exposed without being housed in the door pocket. The guide rail 2 is divided into an opening-side guide rail 2a and a door pocket-side guide rail 2b, but it may also be composed of a single guide rail. The guide rail 2 has two rail sections 5 formed on either side of a central opening 4, as shown in FIG. 4.

[0013] As shown in Figures 2 and 3, a leading door roller 6 and a trailing door roller 7 that roll along guide rails 2 are attached to the leading and trailing ends of the upper end of the sliding door 3. In Figure 2, the left direction is the closing direction and the right direction is the opening direction. A closer 8 is built into the corner on the leading side of the upper part of the sliding door 3. When the sliding door 3 is opened, a drive cord 9 (e.g., a wire) is pulled out from the closer 8. When the open sliding door 3 is released, the drive cord 9 is pulled back and the sliding door 3 automatically closes. Reference numeral 10 denotes a lower guide that fits into the bottom groove 3b of the sliding door 3, and the lower guide slidably guides the lower part of the sliding door 3.

[0014] As shown in Figure 4, a storage recess 3a is formed in the corner on the door tip side of the upper part of the sliding door 3, in which the main body case 11 of the closer 8 is stored. This storage recess 3a opens to the upper side and the door tip side of the sliding door 3. The storage recess 3a is formed with a main body case storage section 3a1 in which the main body case 11 of the closer 8 is stored, and a sliding door support member storage section 3a2 in which the sliding door support member 31 of the door tip side door roller 6 is stored. The depth of the sliding door support member storage section 3a2 is formed shallower than the depth of the main body case storage section 3a1.

[0015] As shown in Figure 5, a bracket 12 is fixed with screws to the bottom of the storage recess 3a. The main body case 11 can be slid from the door edge side and stored on the bracket 12 of the storage recess 3a. An attachment stay 11a that is screwed to the bracket 12 is formed on the bottom of the main body case 11. A cover 19 is attached to the side end face of the sliding door 3 of the main body case 11. The cover 19 is formed to have the same shape as the vertical cross section of the storage recess 3a.

[0016] A drive unit 14 is provided inside the main body case 11 of the closer 8. The drive unit 14 includes a reel 15 around which the drive cable 9 is wound, a spring 16 arranged inside the reel 15, and a drive roller 18 from which the drive cable 9 is pulled out. The drive roller 18 is arranged in a lead-out portion 17 that protrudes from the top of the main body case 11. When the drive cable 9 is pulled out, the spring 16 is wound up and the spring force of the spring 16 is accumulated. When the drive cable 9 is released, the spring force of the spring 16 pulls the drive cable 9 back.

[0017] 8(a), the position P at which the drive cord 9 starts to be pulled out from the drive roller 18 is the position at which the drive cord 9 starts to be pulled out from the drive unit 14. When the drive cord 9 is pulled out from the reel 15 without the drive roller 18, the position at which the drive cord 9 starts to be pulled out from the reel 15 is the position at which the drive cord 9 starts to be pulled out from the drive unit 14.

[0018] As shown in FIG. 4, the leading door roller 6 includes four rollers 32 that roll on the two rail portions 5 of the guide rail 2, a running body 33 to which the rollers 32 are rotatably attached, a shaft 34 (see also FIG. 5) that is attached to the running body 33 and supports the sliding door 3, and a sliding door support member 31 that is attached to the shaft 34. The sliding door 3 is attached to the sliding door support member 31. The leading door roller 7 is configured in substantially the same way as the leading door roller 6, and therefore the same reference numerals are used and a description thereof will be omitted. The leading door roller 6 and the trailing door roller 7 are known, and therefore a detailed description of their mechanisms will be omitted.

[0019] As shown in Figure 3, the position P at which the drive cord 9 starts to be pulled out from the drive unit 14 (see also Figure 5) is located closer to the door edge than the shaft 34 of the door-edge-side roller 6 that supports the sliding door 3. With the sliding door 3 suspended from the door-edge-side roller 6, the main body case 11 of the closer 8 can be removed from the storage recess 3a of the sliding door 3. The main body case 11 of the closer 8 and the door-edge-side door roller 6 are not fastened by fastening members such as screws, so the door-edge-side door roller 6 remains in place even when the main body case 11 of the closer 8 is removed. The drive cord 9 is pulled out from the drive unit 14 to the door edge side without passing through the door-edge-side door roller 6, and reaches its tip 9a. The tip 9a of the drive cord 9 is hooked onto a fixed hook 36 that is fixed to the upper base of the end of the guide rail 2.

[0020] As shown in Fig. 4, a retraction device 40 having a door-leading-side catch 42 capable of capturing a door-leading-side trigger 41 is attached to the door-leading-side door roller 6. A coil spring and a linear damper are built into a main body case 45 of the retraction device 40.

[0021] The retraction device 40 is attached to the door-edge side roller 6 and moves together with the sliding door 3. When the retraction device 40 moves together with the sliding door 3 to the position of the door-edge side trigger 41 just before the fully closed position, the door-edge side catch 42 captures the door-edge side trigger 41, and the retraction device 40 automatically moves together with the sliding door 3 to the fully closed position. When the door-edge side catch 42 captures the door-edge side trigger 41, the door-edge side catch 42 disengages from the main body case 45 of the retraction device 40, and the spring force of the coil spring causes the main body case 45 of the retraction device 40 together with the sliding door 3 to move in the closing direction relative to the door-edge side catch 42 that has captured the door-edge side trigger 41. The closing movement of the sliding door is braked by a linear damper. Retraction devices are well known, so a detailed description of the mechanism will be omitted.

[0022] The force with which the retraction device 40 moves the sliding door 3 in the closing direction is greater than the force with which the closer 8 moves the sliding door 3 in the closing direction. Therefore, by providing the retraction device 40, the sliding door 3 can be reliably closed. Also, the sliding door 3 can be stably held in the closed position.

[0023] The retraction device 40 is a so-called dual-type retraction device, and has a trailing edge catch 44 that can capture a trailing edge trigger 43 fixed to the guide rail 2. When the retraction device 40 moves together with the sliding door 3 to the trailing edge catch 44 just before the fully open position, the trailing edge catch 44 captures the trailing edge trigger 43, and the retraction device 40 automatically moves together with the sliding door 3 to the fully open position. This principle is the same as when the leading edge catch 42 captures the leading edge trigger 41. Dual-type retraction devices are also known, so a detailed explanation of the mechanism will be omitted.

[0024] When installing the closer 8, leading-side door roller 6, retraction device 40, and trailing-side door roller 7, first install the door pocket-side guide rail 2b in the frame 1, and insert the main plate 43a of the trailing-side trigger 43 into the guide groove 2b1 at the top of the door pocket-side guide rail 2b. Then, the roller 32 of the leading-side door roller 6, the retraction device 40 installed on the leading-side door roller 6, and the roller 32 of the trailing-side door roller 7 are placed inside the opening-side guide rail 2a, and the opening-side guide rail 2a is installed in the frame 1, with the sliding door support members 31 of the leading-side door roller 6 and trailing-side door roller 7 hanging below the guide rail 2. Then, the trailing-side trigger 43, leading-side trigger 41, and fixing hook 36 are fixed to the top of the guide rail 2.

[0025] Next, the sliding door 3 is attached to the sliding door support member 31 of the leading door roller 6 and trailing door roller 7. The means for fixing the sliding door 3 to the sliding door support member 31 is not particularly limited as long as it can attach the sliding door 3 and allow the sliding door 3 to be removed when necessary, and may be, for example, a fixing screw or a snap fit.

[0026] Next, the main body case 11 of the closer 8 is slid into the storage recess 3a at the corner of the sliding door 3 and stored therein, and the main body case 11 is fixed with screws to the main body case storage portion 3a1 of the storage recess 3a. Furthermore, the drive cord 9 is pulled out from the closer 8 attached to the sliding door 3, and its tip 9a is hooked onto the fixing hook 36 fixed to the guide rail 2. This results in a sliding door 3 that can slide freely along the guide rail 2 as shown in Figure 3.

[0027] When the sliding door 3, which is in the fully closed position shown in Fig. 6, is opened to the intermediate position shown in Fig. 3, the drive rope 9 of the closer 8 is pulled out from the drive unit 14, and the mainspring 16 of the closer 8 is wound up. When the sliding door 3 is released, the drive rope 9 is pulled back by the elastic restoring force of the mainspring 16, and the sliding door 3 automatically moves in the closing direction by the closer 8. When the sliding door 3 moves in the closing direction to the door-end trigger 41, the retraction device 40 automatically moves the sliding door 3 to the fully closed position. At this time, the linear damper of the retraction device 40 works to prevent the moving speed of the sliding door 3 from accelerating, and the sliding door 3 closes slowly.

[0028] When the sliding door 3 shown in Fig. 3 is opened and moved to the door trailing side trigger 43, the retracting device 40 automatically moves the sliding door 3 to the fully open position, as shown in Fig. 7. At this time, the linear damper of the retracting device 40 works to prevent the moving speed of the sliding door 3 from accelerating, and the sliding door 3 opens slowly.

[0029] As shown in Figure 6, when the sliding door 3 is in the fully closed position, the closing force from the closer 8 and the closing force from the retraction device 40 act on the sliding door 3 in a superimposed manner. For this reason, force is required to open the sliding door 3 when it is in the fully closed position. In order to easily open the sliding door 3 when it is in the fully closed position, as shown in Figure 8, the inclination angle θ of the drive cord 9 with respect to the horizontal line is gradually increased as the sliding door 3 closes. The force of the spring 16 trying to pull back the drive cord 9 acts in the direction of the inclination angle θ of the drive cord 9. By gradually increasing the inclination angle θ of the drive cord 9 as the sliding door 3 closes, the force in the closing direction acting from the closer 8 on the sliding door 3 can be gradually reduced. For this reason, the sliding door 3 can be easily opened when it is in the fully closed position.

[0030] In order to increase the inclination angle θ of the drive cord 9, it is desirable to position the pull-out start position P of the drive cord 9 below the guide rail 2, position the tip 9a of the drive cord 9 inside the guide rail 2, and have the drive cord 9 straddle the lower end line of the guide rail 2. The drive cord 9 is positioned inside the central opening 4 of the guide rail 2 so that the guide rail 2 and the drive cord 9 do not interfere with each other.

[0031] When the closer 8 needs to be removed from the sliding door 3 for maintenance such as repairs, all that is required is to remove the fixing screws of the main body case 11 of the closer 8 and pull the main body case 11 out of the storage recess 3a of the sliding door 3 toward the door front while the sliding door 3 is suspended on the leading-side roller 6 and the trailing-side roller 7. After maintenance is complete, the main body case 11 of the closer 8 can be stored in the storage recess 3a of the sliding door 3 and fixed with the fixing screws. In this way, the main body case 11 of the closer 8 can be removed and attached while the sliding door 3 is suspended on the leading-side roller 6 and the trailing-side roller 7, making maintenance such as repairs easy to perform.

[0032] Furthermore, since the main body case 11 of the closer 8 is disposed closer to the door leading edge than the sliding door support member 31 of the door leading side door roller 6, the main body case 11 of the closer 8 can be removed and attached more easily.

[0033] Furthermore, not only the main body case 11 of the closer 8 but also the sliding door support member 31 of the door leading side door roller 6 is stored in the storage recess 3a of the sliding door 3, so the sliding door support member 31 of the door leading side door roller 6 is not exposed to the outside, improving the appearance.

[0034] In the above embodiment, the retraction device 40 is attached to the door-leading door roller 6, but the retraction device 40 may be omitted. [Explanation of symbols]

[0035] 1...Frame 2...Guide rail 3...Sliding door 3a…Storage recess 3a1...Main body case storage section 3a2...sliding door support member storage section 6...Front door roller 7...End side roller 8…Closer 9...Drive rope 11...Main unit case 14...Drive unit 31...Sliding door support member for door leading side door roller 34... Shaft of the door roller on the leading edge of the door 40...Retraction device 41...Front door trigger (trigger) 42...Door end catch (catch) θ...Inclination angle of the driving rope relative to the horizontal line

Claims

1. a guide rail disposed on the top of the frame; A door leading side door roller and a door trailing side door roller that roll along the guide rail and from which the sliding door is hung; a closer that is built into the upper part of the sliding door and a drive rope pulled out from a drive unit is fixed to the upper part of the frame, The closer's main body case can be stored in a storage recess formed at the corner of the sliding door and opening to the upper and door tip sides, The pull-out start position of the drive rope of the closer from the drive unit is arranged on the door-end side of the shaft supporting the sliding door of the door-end side door roller, A top-hung sliding door in which the main body case of the closer is detachable from the sliding door while the sliding door is hung on the door-front-side door roller.

2. 2. The top hung sliding door according to claim 1, wherein the main body case of the closer is disposed closer to the door leading side than a sliding door support member attached to the shaft of the door leading side door roller.

3. The top-hung sliding door according to claim 2, characterized in that the storage recess is formed with a main case storage section in which the main case of the closer is stored, and a sliding door support member storage section in which the sliding door support member of the door-leading door roller is stored.

4. The door-end side door roller is provided with a retraction device that has a catch capable of capturing a trigger fixed to the guide rail and applies a force to the sliding door at least in the closing direction, 3. The top-hung sliding door according to claim 1, wherein the angle of inclination of the drive rope with respect to the horizontal line gradually increases as the sliding door closes.

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