Door opening / closing device adjustment method

Abstract

To make the positional relationship between an upper rail and a lower rail suitable.SOLUTION: An adjustment method of the positional relationship between an upper rail 46 and a lower rail 31 in an opening / closing door device that conducts an opening / closing operation to guide a door body 10 in the opening width direction between the upper rail 46 and the lower rail 31 with the usage of a laser emitter X that forms a flat optical path surface P with emitted visible laser light. The adjustment method includes a first step of installing the laser emitter X so that the optical path surface P is in proximity or contact with the upper rail 46 and lower rail 31, a second step of adjusting the position of the laser emitter X so that the upper rail 46 is parallel to the optical path surface P, and a third step of adjusting the position of the lower rail 31 so as to be parallel to the optical path surface P.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a method for adjusting an opening and closing door device, which adjusts the positional relationship between an upper rail that guides a door body in the opening and closing direction on its upper side and a lower rail that guides the door body in the opening and closing direction on its lower side. [Background technology]

[0002] Conventional door opening and closing devices, such as those described in Patent Document 1, include a door body that opens and closes in the opening width direction, an upper rail that guides a hoist attached to the upper part of the door body in the opening and closing direction, and a lower rail that guides a lower car attached to the lower part of the door body in the opening and closing direction. When such an opening and closing door device is installed in an opening in the framework of a building or the like, if the parallelism between the upper rail and the lower rail is not appropriate, there is a risk of problems with the opening and closing operation. Therefore, in the conventional construction method, the installer would slowly open and close the door body between the upper and lower rails and determine by intuition whether the parallelism of the upper and lower rails was appropriate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-206945 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the above-described conventional construction method, the parallelism between the upper and lower rails may vary depending on the construction worker, the site conditions, and the like. [Means for solving the problem]

[0005] In view of the above problems, the present invention has the following configuration. A method for adjusting an opening and closing door device that guides a door body between an upper rail and a lower rail in an opening width direction to perform an opening and closing operation, the method comprising adjusting the positional relationship between the upper rail and the lower rail by using a laser emitting device that forms a flat light path surface with emitted visible laser light, the visible laser light forms a vertical, flat optical path surface that is along at least both the upper rail and the lower rail, The optical path surface is In the expected direction a first step of placing the laser beam emitting device so that the laser beam emitting device is in close proximity to or in contact with the upper rail and the optical path surface; In the expected direction a second step of adjusting the position of the laser beam emitting device so that the laser beam is parallel to the optical path plane; In the expected direction and a third step of adjusting the opening and closing door device. [Effects of the Invention]

[0006] Since the present invention is configured as described above, the positional relationship between the upper rail and the lower rail can be optimized. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a front view showing a fully closed state of an example of an opening and closing door device to which an opening and closing door device adjusting method according to the present invention is applied. [Figure 2] 1 is a front view showing a fully open state of an example of an opening and closing door device to which an opening and closing door device adjusting method according to the present invention is applied. [Figure 3] FIG. 2 is a cross-sectional view taken along the line (III)-(III) in FIG. [Figure 4] FIG. 3 is a cross-sectional view taken along the line (VI)-(VI) in FIG. [Figure 5] FIG. 10 is a front view of the opening and closing door device, illustrating an example of a method for adjusting the opening and closing door device according to the present invention, showing the state after the lower rail has been attached. [Figure 6] 3A to 3C are longitudinal cross-sectional views of the door opening and closing device, showing the steps of the method for adjusting the door opening and closing device in order. [Figure 7]5A and 5B are longitudinal cross-sectional views of the opening and closing door device, showing the steps of another example of the opening and closing door device adjusting method according to the present invention in order. DETAILED DESCRIPTION OF THE INVENTION

[0008] This embodiment discloses the following features. The first feature is an opening / closing door device adjustment method for adjusting the positional relationship between an upper rail and a lower rail, using a laser emitting device that forms a flat optical path surface with emitted visible laser light, for an opening / closing door device that guides a door body between an upper rail and a lower rail in the opening width direction to perform opening and closing operations, and includes a first step of installing the laser emitting device so that the optical path surface is close to or in contact with the upper rail and the lower rail, a second step of adjusting the position of the laser emitting device so that the upper rail and the optical path surface are parallel, and a third step of adjusting the position of the lower rail so that it is parallel to the optical path surface (see FIGS. 1 to 7).

[0009] As a second feature, in the second step, the distance from the optical path surface to a predetermined position on the door front side of the upper rail and the distance from the optical path surface to a predetermined position on the door rear side of the upper rail are measured, and when these two distances are approximately the same, the optical path surface and the upper rail are considered to be parallel (see Figures 6(b) and 7(a)).

[0010] As a third feature, in the third step, the distance from the optical path surface to a predetermined position on the door front side of the lower rail and the distance from the optical path surface to a predetermined position on the door rear side of the lower rail are measured, and when these two distances are approximately the same, the optical path surface and the lower rail are considered to be parallel (see Figures 6(c) and 7(c)).

[0011] As a fourth feature, in the second step or the third step, a ruler is used to measure the dimension between the upper rail or the lower rail and the optical path surface (see FIGS. 6(b) and 6(c) and FIG. 7(c)).

[0012] As a fifth feature, in the first step, the laser beam emission device is installed on one side in the opening width direction (see FIG. 6).

[0013] As a sixth feature, in the second step, the laser beam emission device is moved so that the optical path surface is in contact with the upper rail and substantially parallel to the upper rail (see FIG. 7(a)).

[0014] As a seventh feature, the door body is provided with a hoist that rolls on the upper rail above the door leading edge, and a lower car that rolls on the lower rail below the door trailing edge, and the lower rail is provided closer to the door trailing edge than the upper rail (see Figures 1 and 2).

[0015] <Specific embodiment> Next, specific embodiments having the above-mentioned features will be described in detail with reference to the drawings. In this specification, the term "visible direction" refers to the width direction of the frame body (the left-right direction in FIG. 1). The term "visible direction" refers to the direction of the frame thickness that is approximately perpendicular to the "visible direction." Furthermore, the "opening width direction" refers to the lateral width direction of the opening that is opened and closed by the door body, and in this embodiment, this is the same direction as the "finding direction." Furthermore, the "door thickness direction" refers to the direction of the thickness of the door body, which in this embodiment is the same direction as the "front direction."

[0016] 1 and 2 show an example of an opening and closing door device to which the opening and closing door device adjusting method according to the present invention is applied. This opening and closing door device 1 is configured to open and close an opening A that penetrates a wall portion of a building or the like in a vertically long rectangular shape in the width direction by a door body 10 (see Figs. 1 and 2).

[0017] The opening and closing door device 1 is a sliding door device comprising a door body 10 that moves in the opening width direction to open and close the opening A, a door-front vertical frame 20 facing the door front of the door body 10, a lower rail 31 that guides the door body 10 in the opening and closing direction on the lower side, and a transom 40 that incorporates an upper rail 46 that guides the door body 10 in the opening and closing direction on the upper side. This opening and closing door device 1 is provided with a device for automatically closing or automatically opening the door body 10, a damper device for reducing the closing speed or opening speed of the door body 10, and the like, as required.

[0018] The door body 10 is a member that opens and closes in the width direction of the opening. The door body 10 comprises a front panel 11 and a back panel 12 (see FIG. 3) that are spaced apart in the door thickness direction and are generally parallel to each other, and a plurality of frames that secure the front panel 11 and the back panel 12 together on the inside.

[0019] Of the multiple aggregates, the uppermost aggregate is a horizontal aggregate 13 that spans almost the entire width of the door body 10. A hoist 14 that suspends the door body 10 and rolls on an upper rail 46 is supported on the upper surface of this horizontal aggregate 13.

[0020] The hoist 14 is arranged at the top of the door body 10 on the door tip side. The hoist 14 is supported at the upper end of the door body 10 via a bracket 15 or the like so as to rotate about an axis in the door thickness direction. The hoist 14 protrudes upward from the door body 10 and engages with the upper rail 46.

[0021] In addition, a recessed groove 16 that opens downward and extends across the width of the door is provided at the lower end of the door body 10 (see Figure 4). A carriage 17 is supported in this recessed groove 16 so as to protrude downward from the trailing edge of the door body 10.

[0022] In the recessed groove 16, a dismounting vehicle 17, a wheel-off prevention member 16a, an airtight material 16b, etc. are supported via brackets or the like.

[0023] The lower carriage 17 rotates freely around a rotation axis in the door thickness direction as a fulcrum, and rolls on the lower rail 31. The wheel derailment prevention member 16a is a member having a substantially L-shaped vertical cross section, and is arranged to engage with a wheel derailment prevention locking portion 33 integral with the rail 31 when the dismounting car 17 moves upwardly away from the rail 31. The airtight material 16b protrudes downward from the door body 10 across the door width direction and contacts the lower immovable surface F, and is supported so as to be movable up and down.

[0024] In FIG. 1, reference numeral 18 denotes a handle for opening and closing the door body 10, and reference numeral 19 denotes a keyhole or thumb turn of a locking device.

[0025] The door-end vertical frame 20 is a long, columnar member that continues in the vertical direction and is fixed to the wall surface of the frame so as to fit along the left edge of the opening A. This door-end vertical frame 20 has a continuous groove in the vertical direction on the surface facing the door body 10 so that the door end of the door body 10 can be fitted into it.

[0026] The lower rail 31 is fixed to the lower stationary surface F on the door trailing edge side of the upper rail 46 by detachable fixing means such as screws or bolts. The lower rail 31 is formed in a long shape that protrudes from the lower immovable surface F and continues in the door body opening and closing direction. One end of this lower rail 31 is located closer to the tail end of the door body 10 when it is in the fully closed position (see Figure 1) and closer to the door tip than the lower carriage 17, and the other end of the lower rail 31 is located closer to the tail end of the door body 10 when it is in the fully open position (see Figure 2) and closer to the tail end than the lower carriage 17.

[0027] In the example shown in Figure 4, the lower stationary surface F is a metal door slide member fixed to the floor surface or the like across the opening and closing range of the door body 10. As another example of this lower stationary surface F, it may be the floor surface itself.

[0028] A wheel-off prevention locking portion 33 is fixed to the lower rail 31 so as to engage with the wheel-off prevention member 16 a of the door body 10 . This anti-wheel slippage locking portion 33 is a member with an inverted L-shaped cross section that continues in the opening width direction along the lower rail 31, and the part that protrudes in the door thickness direction is positioned above the lower end piece of the anti-wheel slippage member 16a (see Figure 4).

[0029] Furthermore, on the lower stationary surface F, a lower anti-sway member 32 is provided closer to the door tip than the lower rail 31. This lower anti-sway member 32 is a roller supported on the lower stationary surface F so as to rotate around an axis in the vertical direction, and is loosely fitted into the recessed groove 16 to prevent the lower end of the door body 10 from swinging in the door thickness direction.

[0030] The transom 40 is configured to be long in the width direction so as to cover the upper end portion of the door body 10 in the fully closed state over the entire length in the opening and closing direction. As shown in Figure 3, this door frame 40 comprises a base 41 that supports the upper rail 46 and is attached to the wall W, and a front cover member 44 that is removably attached to the base 41 and covers the upper end of the door body 10 and the hoist 14, etc. from the front side.

[0031] In Figure 3, symbol 21 denotes a vertical frame member that covers the vertical edge of the opening A in the vertical direction, symbol 22 denotes an upper frame member that covers the upper horizontal edge of the opening A, and symbol 23 denotes an airtight material that elastically contacts the back surface of the upper end of the door body 10 in the opening and closing direction.

[0032] The base 41 is a member fixed in an elongated shape along the upper wall surface w1 of the opening A in the opening width direction. This base 41 integrally comprises a rail side base member 41a to which the upper rail 46 is attached, a wall side base member 41b which is fastened to the wall W, and a top member 41c which covers the upper rail 46, the hoist 14, etc.

[0033] The rail-side base member 41a has a substantially vertical, flat-plate-shaped base plate portion 41a1 to which the upper rail 46 is fastened. The base plate portion 41a1 is continuous in an elongated shape across the width of the opening.

[0034] The wall-side base member 41b is a member that extends above the opening A and continues in an elongated shape in the opening width direction so as to cover a part of the outdoor-side wall surface w1. The wall-side base member 41b is fixed to the wall W by well-known fixing means such as screws, rivets, or welding. 3, reference numeral 41d denotes a fastening member such as a screw that fastens the stacked wall-side base member 41b and top member 41c to the wall surface w1. Reference numeral 41e denotes a substantially cylindrical anchor member embedded in the wall portion W to screw in the fastening member 41d.

[0035] In addition, the top member 41c is formed in an approximately L-shaped vertical cross section from a fastening piece portion 41c1 that is superimposed on and fastened to the wall side base member 41b, and a top plate portion 41c2 that protrudes from the upper end of the fastening piece portion 41c1 toward the outdoors, and is continuous in an elongated shape in the opening width direction. The top member 41c may be formed as an integral member with the wall-side base member 41b or the rail-side base member 41a.

[0036] The rail-side base member 41a and the wall-side base member 41b are integrally formed with the fastening piece 41c1 of the top member 41c sandwiched therebetween (see FIG. 3). The rail-side base member 41a and the top member 41c are detachably connected to the wall-side base member 41b. This connection may be achieved by means of screws, for example, but it may also be achieved by rivets that can be removed by grinding, or by detachable fittings.

[0037] The wall W is a wall of the framework of a building or the like in which the opening and closing door device 1 is to be installed, and is made of concrete, mortar, etc. Anchors and the like (not shown) for fixing the wall-side base member 41b, the upper frame member 22, etc. are embedded in the wall W as necessary.

[0038] In Figure 3, symbol 101 denotes the ceiling portion of the body on which the opening and closing door device 1 is to be installed, symbol 102 denotes the outer wall of the same body, symbol 103 denotes a batten-shaped member that is attached to the wall portion W so as to cover the upper end of the base 41, and symbol 104 denotes a filler that covers the batten-shaped member 103 and seals the gap between the lower end of the outer wall 102 and the ceiling member 41c.

[0039] An upper rail 46 is provided on the base portion 41 so as to protrude from the base portion 41a1 and continue in the opening width direction. The upper rail 46 is a long member with an approximately L-shaped longitudinal cross section that continues in the opening width direction, with one vertical end attached to the base plate portion 41a1 and the other end protruding horizontally from the base plate portion 41a1 on which the hoist 14 is placed and engaged (see Figure 3). The length of the upper rail 46 is set so as to include the range in which the hoist 14 moves as the door body 10 opens and closes. In the drawing, reference numeral 41f denotes fasteners (for example, screws, bolts, etc.) that fasten the upper rail 46 to the base plate portion 41a1.

[0040] Next, an opening and closing door device adjusting method according to the present invention, which is targeted at the opening and closing door device 1, will be described. This method for adjusting the door opening / closing device can be applied to positioning the lower rail 31, which is fixed later, approximately parallel to the upper rail 46, which has been fixed earlier, when assembling the door opening / closing device 1 and installing it in an opening in the structural body of a building, etc., or when performing maintenance on the door opening / closing device 1 after installation.

[0041] In the example shown in Figures 5 to 7, the door-end vertical frame 20, vertical frame member 21, transom 40, lower rail 31, and lower side fixed surface F, which is the door slide member, are assembled into a single unit in a factory, and after these are installed in an opening in the structure of a building or the like, the lower rail 31 is loosened and the position of the lower rail 31 relative to the upper rail 46 is adjusted.

[0042] The term "substantially parallel" refers to the state when the upper rail 46 and the lower rail 31 are viewed from above or below. In other words, in this "substantially parallel" state, the distance between the upper rail 46 and the lower rail 31 in the projected direction is substantially the same at the leading edge and trailing edge.

[0043] This method for adjusting an opening and closing door device includes a first step of installing the laser emitting device X so that the optical path surface P is close to or in contact with the upper rail 46 and the lower rail 31 (close to the upper rail 46 in the example shown in FIG. 6(a)), a second step (see FIG. 6(b)) of adjusting the position of the laser emitting device X so that the upper rail 46 and the optical path surface P are parallel, and a third step (see FIG. 6(c)) of adjusting the position of the lower rail 31 so that the lower rail 31 is parallel to the optical path surface P.

[0044] The laser emitting device X is a device that emits visible laser light in a vertical line. As this laser emitting device X, a well-known laser emitting device called a laser marking device or the like can be used. The visible laser light emitted from this laser emission device X is a visible ray of a single wavelength, and forms a vertical, flat optical path surface P as shown in FIG.

[0045] In the first step, with the upper rail 46 fixed to the base 41 and the lower rail 31 etc. fixed to the lower stationary surface F, the laser beam emitter X is installed on one side of the opening A in the opening width direction (see FIG. 6(a)). According to the illustrated example, the laser emission device X is placed on the floor or the like at a position closer to the door end than the installation space of the lower rail 31, and at a position away from the upper rail 46 and the lower rail 31 in the forward direction so as to emit visible laser light.

[0046] When a predetermined switch is turned on, the laser emission device X emits visible laser light in a vertical line. This visible laser light forms an optical path plane P that runs along both the upper rail 46 and the lower rail 31 at a distance. In other words, the optical path plane P is a vertical flat surface formed by the optical path of the visible laser light.

[0047] In the illustrated example, the optical path surface P is arranged to be close to (non-contacting) both the upper rail 46 and the lower rail 31, but as another example of this first step, it is also possible to arrange the optical path surface P to be close to either the upper rail 46 or the lower rail 31 and in contact with the other, or to arrange the optical path surface P to be in contact with both the upper rail 46 and the lower rail 31.

[0048] In the second step, the distance from the optical path plane P to a predetermined position on the door-edge side of the upper rail 46 and the distance from the optical path plane P to a predetermined position on the door-edge side of the upper rail 46 on the door-tail side are measured (see FIG. 6(b)), and the position of the laser emission device X is adjusted so that these two distances approximately match. Here, in the illustrated example, the predetermined position is the tip position of the part of the upper rail 46 that protrudes from the base 41.

[0049] This position adjustment can be performed by rotating the laser emitting device X around a vertical axis so as to change the emission direction of the visible laser light in the projection direction, or by moving the laser emitting device X in the projection direction so that the distance between the optical path surface P and the upper rail 46 becomes appropriate. When the two distances are approximately equal, the optical path plane P and the upper rail 46 are considered to be parallel.

[0050] In the third step, the fasteners 34 (screws, bolts, etc.) that secure the lower rail 31 to the lower immovable surface F of the door sill, etc., are loosened, allowing the lower rail 31 and the anti-slip locking portion 33 to move in the forward direction. Then, the distance from the optical path plane P to a predetermined position on the door edge side of the lower rail 31 and the distance from the optical path plane P to a predetermined position on the door trailing edge side of the door edge side of the lower rail 31 are measured (see Figure 6(c)), and the position of the lower rail 31 is adjusted so that these two distances match. In the illustrated example, the predetermined position is the tip position of the part of the lower rail 31 that protrudes upward from the lower fixed surface F. When these two distances are approximately equal, the optical path plane P and the lower rail 31 are considered to be parallel.

[0051] In the second or third step, a linear straightedge L is used to measure the distance. That is, in the second step, the worker or the like places a part of the straight edge L (the end in the illustrated example) against the upper rail 46 and holds the straight edge L so that it is approximately perpendicular to the upper rail 46, and places the other part of the straight edge L in the optical path plane P and measures the dimension between the part and the other part by reading the scale of the straight edge L indicated by the visible laser light (see Figure 6(b)). This operation is performed for both the leading edge side portion and trailing edge side portion of the upper rail 46. Then, the laser beam emitting device X is moved and positioned so that the distance at the leading edge side portion and the distance at the trailing edge side portion are approximately the same.

[0052] In the third step, the worker places a part of the straight edge L (one end in the illustrated example) against the lower rail 31 placed on the lower immovable surface F, holding the straight edge L at approximately a right angle to the lower rail 31, and places the other part of the straight edge L in the optical path plane P, and measures the dimension between the part and the other part by reading the scale of the straight edge L indicated by the visible laser light (see Figure 6(c)). This operation is performed for both the leading edge and trailing edge portions of the lower rail 31. Then, the lower rail 31 is moved and adjusted in position so that the distance at the leading edge portion and the distance at the trailing edge portion are approximately the same.

[0053] Thereafter, the lower rail 31 is fixed immovably to the lower immovable surface F by tightening the fasteners 34 (screws, bolts, etc.) that were loosened.

[0054] Therefore, according to the method for adjusting an opening and closing door device of the present invention, the work of installing the lower rail 31 substantially parallel to the upper rail 46 can be carried out efficiently and with high precision. In particular, in the illustrated example of the opening and closing door device 1, the upper rail 46 and the lower rail 31 are positioned apart in the opening and closing direction, but according to the present invention, the parallelism of the upper rail 46 and the lower rail 31 can be adjusted with high precision even in such a positional relationship.

[0055] <Modification> Next, a partially modified embodiment of the above-mentioned method for adjusting an opening and closing door device will be described. 7(a) and 7(b) show another example of the method for adjusting an opening and closing door device according to the present invention. In this door opening and closing device adjusting method, in the second step described above, the position of the laser emitting device X is adjusted without using the straightedge L so that the optical path surface P is in contact with the upper rail 46 substantially parallel to it.

[0056] More specifically, in this second step, the position of the laser emitting device X is adjusted so that a predetermined position on the door leading side of the upper rail 46 (in the illustrated example, the tip in the door thickness direction) comes into contact with the optical path surface P, and a predetermined position on the door trailing side of the upper rail 46 also comes into contact with the optical path surface P. In other words, the laser emitting device X is moved so that the tip of the upper rail 46 comes into contact with the optical path surface P over the entire extension direction of the upper rail 46.

[0057] After this, in the third step, the lower rail 31 is placed on the lower fixed surface F, and the distance from the optical path surface P to a predetermined position on the door edge side of the lower rail 31 (in the illustrated example, the upper end of the lower rail 31 on the door edge side) and the distance from the optical path surface P to a predetermined position on the lower rail 31 on the door tail side of the predetermined position on the door edge side (in the illustrated example, the upper end of the lower rail 31 on the door tail side) are each measured using a straight edge L, and the lower rail 31 is moved and fixed so that these two distances match.

[0058] In the measurement operation, a part of the straight edge L (the lower surface at the tip side in the example of Figure 7) is brought into contact with the upper end of the lower rail 31, and the other part of the straight edge L (the tip part in Figure 7) is placed in the optical path plane P. The worker or the like looks at the straightedge L from the side and reads the scale on the straightedge L to measure the dimension between the one portion and the other portion.

[0059] Therefore, according to the method for adjusting an opening and closing door device shown in FIG. 7, the second step can be carried out without the need to abut the straightedge L against the base 41, which is located at a relatively high place, and the workability is good.

[0060] In the above embodiment, the lower rail 31 is provided closer to the door tail than the upper rail 46, but the door opening / closing device adjustment method of the present invention can also be applied to door opening / closing devices in which the lower rail is provided directly below the upper rail.

[0061] Furthermore, according to the above embodiment, the laser emission device X is installed closer to the door tail than the opening and closing door device 1 in the opening width direction, but as another example, the laser emission device X can also be installed closer to the door tip than the opening and closing door device 1 in the opening width direction.

[0062] Furthermore, in the above embodiment, a linear straight edge L is used, but as another example, it is possible to use a ruler other than the straight edge L shown in the illustration, such as a triangular ruler, a T-square, or a right-angle ruler, instead of the straight edge L.

[0063] Furthermore, according to the above embodiment, the door body 10 is guided between the upper rail 46 and the lower rail 31 in the opening width direction to perform the opening and closing operation, but the opening and closing door device adjustment method of the present invention can be applied to opening and closing door devices other than the illustrated example that have upper and lower rails, such as a folding door device that opens and closes by folding and unfolding the door body between the upper and lower rails, or a balanced door device that opens and closes by moving the door body on the door front side in the opening width direction while rotating between the upper and lower rails.

[0064] Furthermore, the present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the present invention. [Explanation of symbols]

[0065] 1: Door opening and closing device 10: Totai 14: Hanging wheel 17: Get off 41: Base 31: Lower rail 40: No Eyes 46: Upper rail L: Straightedge F: Lower immovable surface P: Optical path surface X: Laser emission device

Claims

1. A method for adjusting an opening and closing door device that guides a door body between an upper rail and a lower rail in an opening width direction to perform an opening and closing operation, the method comprising adjusting the positional relationship between the upper rail and the lower rail by using a laser emitting device that forms a flat light path surface with emitted visible laser light, the visible laser light forms a vertical, flat optical path surface that is along at least both the upper rail and the lower rail, a first step of installing the laser beam emitting device so that the optical path surface is close to or in contact with the upper rail and the lower rail in a front direction; a second step of adjusting the position of the laser beam emitting device so that the upper rail and the optical path surface are parallel to a projection direction; and a third step of adjusting the position of the lower rail in the forward direction so that the lower rail is parallel to the light path plane.

2. 2. The door opening and closing device adjusting method according to claim 1, wherein in the second step, the distance from the optical path surface to a predetermined position on the door front side of the upper rail and the distance from the optical path surface to a predetermined position on the door rear side of the upper rail are measured, and when these two distances approximately match, the optical path surface and the upper rail are considered to be parallel.

3. 3. The method for adjusting an opening and closing door device according to claim 1, wherein in the third step, the distance from the optical path surface to a predetermined position on the door front side of the lower rail and the distance from the optical path surface to a predetermined position on the door rear side of the lower rail are measured, and when these two distances approximately match, the optical path surface and the lower rail are considered to be parallel.

4. 4. The method for adjusting an opening and closing door device according to claim 2 or 3, wherein in the second step or the third step, a ruler is used to measure the dimension between the upper rail or the lower rail and the optical path surface.

5. 5. The method for adjusting an opening and closing door device according to claim 1, wherein in the first step, the laser emission device is installed on one side in the opening width direction.

6. The opening and closing door device adjusting method according to any one of claims 1 to 5, wherein in the second step, the laser emission device is moved so that the optical path surface is in contact with the upper rail and substantially parallel to the upper rail.

7. The door body includes a hoist that rolls on the upper rail above the door leading edge and a lower carriage that rolls on the lower rail below the door trailing edge, and the lower rail is provided closer to the door trailing edge than the upper rail. The method for adjusting an opening and closing door device according to any one of claims 1 to 6, wherein in the first step, the laser emitter is installed closer to the door trailing edge than the lower rail.

8. The opening and closing door device has a sliding member that forms a lower immovable surface over the opening and closing range of the door body, The method for adjusting an opening and closing door device according to any one of claims 1 to 7, characterized in that the door slide member is installed before the first step.

9. The lower rail is fastened to the shoe slide member by a detachable fixing means, 9. The method for adjusting an opening and closing door device according to claim 8, wherein in the third step, the fastening state of the lower rail by the fixing means is loosened to make the position of the lower rail adjustable.

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