JPH0460189B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention is directed to a method in which a desired plurality of doors, such as two, three, four, etc., are inserted into an opening of a cabinet or the like so that the doors abut each other with their widthwise ends. By combining the two doors, the two doors are brought into a closed door state, and from this state, one door is moved to overlap the front or rear side of the other door to create an open door state in which they are stacked. The present invention relates to a door rail suitable for use in an inset plane closing sliding door device.

<<Prior Art>> Conventional so-called sliding doors have a step between the doors in the door thickness direction, which impairs the aesthetic appearance. However, due to the structure of the current door device, unless a space is provided between the butting ends of the two doors, the doors cannot be opened or opened, causing the doors to overlap each other. There are various problems in use, manufacturing, and cost, such as not being able to close the door, and opening or opening the door without chamfering the back surfaces of the butting ends of both doors into an inclined state. are doing.

Therefore, in an attempt to solve the above problem, the applicant has already provided two running bodies at both the upper and lower ends of the left and right doors, at the inner and outer ends of the door width direction, and On the opposing surfaces of the upper and lower walls of the mounting frame, there is a straight part at the center, a sloped part curved backward at both left and right ends of the straight part, and a slope part curved backward at both left and right sides of the straight part. One upper wall door rail consisting of a guide part and one lower wall door rail are arranged side by side, and the running bodies at both the inner and outer ends in the door width direction are connected to the guide part and the inclined part of both door rails. By being engaged, the left and right doors are brought into a planar closed state with their respective inner edges butted against each other, and
A planar closing sliding door device is proposed in which one door is opened while being stacked on the front or back of the other door.

According to the above-described door device, when both doors are closed in a plane, both door rails are covered by the doors, so that they are not exposed to the outside, and the design is excellent. Although it is certainly effective, such as being able to create a completely closed door between the ends of the door without cutting out the butting ends, the door rail of the above door device is formed in one piece.
In addition, since it is formed in a length and shape that corresponds to the number of doors, for example, in the case of a two-panel door, it is made for two doors, and in the case of a three-panel door, it is made for three doors. Since special rails must be manufactured to suit each door rail, a wide variety of door rails must be prepared, and as the number of doors increases, the length becomes longer, which not only causes various manufacturing and cost problems. This will also cause problems in packing and transportation.

<<Problems to be Solved by the Invention>> The door rail according to the present invention attempts to solve the above problems, and includes a first door rail unit formed slightly shorter than the widthwise dimension of the door;
A second door rail unit is used in conjunction with the first door rail unit and is formed to have the same length but a symmetrical shape.These first and second door rail units are connected to the door. By engaging the provided running body, the door can be moved to open and close.A straight groove part is provided along the entire length in the longitudinal direction, and a slanted groove part that curves backward and outward is provided near one end, and a slanted groove part is provided near the other end. By appropriately arranging guide grooves that bend rearward, the first and second door rail units can be arranged in series in the length direction, such as two, three, four, etc., as needed. By connecting them in a shape, it is possible to easily and easily construct a double door, triple door, quadruple door, etc., and this makes manufacturing easier. The purpose is to reduce costs and provide products that are convenient to handle and transport.

<<Means for Solving the Problems>> In order to achieve the above object, the present invention provides two running bodies at both the upper and lower ends of two or more doors, at both the inner and outer ends in the width direction of the door. On the other hand, a door rail for the upper wall and a door rail for the lower wall are formed on the opposing surfaces of the upper wall and the lower wall of the door mounting frame, and one of the door rail for the upper wall and the door rail for the lower wall corresponds to each door. It consists of a straight groove part, a continuous inclined groove part on both the left and right sides of each of these straight groove parts, sloping outward toward the rear or front, and a guide groove part which is also curved backward or forward. The running body is engaged with the door rail for the upper wall and the door rail for the lower wall of the door, and the interior of the running body is engaged with the inclined groove portion and the guide groove portion, so that the door is connected to the inner end of each of the door rails. The door becomes a flat closed door state when the doors butt against each other, and the door transitions from the closed door state described above to a straight groove section, and is configured so that it can be opened freely in a stacked state on the front or back of an adjacent door. In the inset plane closing sliding door device, the above door rail for the upper wall or the door rail for the lower wall has a first door rail unit and a second door rail whose length is slightly shorter than the widthwise dimension of each door. Each door, which is a unit, is provided with an independent vehicle body, and the first door rail unit and the second door rail unit are connected to each other in a longitudinal direction so that the upper wall or the lower wall A wall door rail is constructed, and the first door rail unit and the second door rail unit are formed symmetrically with respect to the abutment surface formed by the mutual connection, and both the second door rail units are are formed congruently in the same direction on the left and right with the mutual connecting abutting surfaces as an axis, and the first
Each of the above-mentioned linear grooves in the door rail unit and the second door rail unit is a widened shallow groove part,
and a narrow deep groove recessed in the center of the bottom surface of the widened shallow groove, and the inclined groove in the first door rail unit is formed as the narrow deep groove, the guide groove is formed as the widened shallow groove, and In the second door rail unit, each of the inclined grooves is formed into a widened shallow groove, and each guide groove is formed into a narrow and deep groove, and each of the widened shallow grooves of the guide groove and the inclined groove is communicated with each widened shallow groove of the linear groove. Further, the door rail of the inset plane closing sliding door device is characterized in that each of the narrow and deep grooves of the inclined groove and the guide groove is communicated with each of the narrow and deep grooves of the straight groove. This is what we are trying to provide.

<<Example>> Hereinafter, a door rail according to the present invention is constructed by connecting two types of first and second door rail units 22a and 22b shown in A and B of FIG. , this is shown in Figures 2, 3, and 4.
It is used for an inset sliding door as illustrated in the figure.

In other words, in Fig. 2, both left and right doors 1 and 3
and the intermediate door 2 are formed to have the same size, and the inner edges 1a, 3a of both the left and right doors 1, 3 in the width direction, and the left and right side edges 2a, 2b of the intermediate door 2. are brought into a closed state in a plane by butting them together, and between the inner surfaces of the front end openings of the upper wall 4a and lower wall 4b of the door mounting frame 4 of the cabinet etc. and the front surfaces of the left and right side walls 4c and 4d, The vertical and horizontal dimensions are such that they are inset so that there is almost no space between them.

Moreover, as shown in Fig. 2, the left and right doors 1,
The outer ends 1b, 3b and the inner ends 1a, 3a in the width direction of the door 3, and the left and right ends 2 of the intermediate door 2.
a, 2b have brackets 5, 5', 6, 6', 7, whose upper end extends rearward from the lower end, respectively.
7', 8, 8', 9, 9', 10, 10' are fixed. Each of these blockets has sequentially running bodies 11, 11', 12, 12', 13, 13',
14, 14', 15, 15', 16, 16', and brackets 5', 6', 7', 8', 9', 1 at the lower end of each door 1, 2, 3.
At 0', support running bodies 17, 17', 1 are sequentially installed.
8, 18', 19, 19' are also provided, and each of the traveling bodies 11-16' is symmetrically projected inward in the longitudinal direction of the doors 1, 2, 3. Further, the support running bodies 17 to 19' are rotated by a support shaft 20 supported in the direction of the door thickness, as shown in FIGS. 8 and 9, so as to be rotatable in the door width direction. It is freely supported.

Furthermore, in the case of the inset plane closing sliding door device, each of the traveling bodies 11 to 3 of the doors 1 to 3 is
16' is engaged and the support running bodies 17 to 19' slide, thereby guiding each door 1 to 3 so that they can be opened and closed in the door width direction. An upper wall door rail 21 and a lower wall door rail 22 are provided facing each other on the inner surfaces of the upper wall 4a and the lower wall 4b, respectively.

Both door rails 21 and 22 have openings 4e in the door mounting frame 4, as shown in FIG.
Although it is provided in the vicinity and parallel to the opening edge 4f, the upper wall door rail 21 may, of course, be formed directly on the inner surface of the upper wall 4a of the door mounting frame 4. Alternatively, it may be formed from a separate member and placed on the inner surface of the upper wall 4a. The structure of the upper wall door rail 21 is as shown in FIG.
and a straight groove portion 21a having a length corresponding to the door width of the intermediate door 2, and in which the running bodies 11 and 16 of the doors 1 and 2 are engaged to guide the doors 1 and 2 in parallel;
It has a length corresponding to the door width of the door 3 on the right side, and engages the running body 12 of the door 3, thereby making the door 3
a straight groove portion 21b that guides the straight groove portion 2 in parallel; inclined portions 21c and 21d that are connected to the left and right sides of the straight groove portion 21a by bending outwardly to the rear;
At the right end of 1b, there is an inclined part 21e which is curved outwardly and connected to the rear, and a flat part on which the traveling bodies 13, 14, 15 on the other end of the doors 1 to 3 come into contact and are slidably guided. 21f.

The door rail according to the present invention is used in the above-mentioned inset plane closing double sliding door device, and in the illustrated example, it is used as the door rail 22 for the lower wall.

That is, as disclosed in FIG. 3 and further shown in FIG. 1 A and B, each door 1 to
The first door rail unit 22a and the second door rail units 22b, 22c, each having a length slightly shorter than the width direction dimension of the door No. 3, are formed as an exclusive unit for each door, and the first door rail A single lower wall door rail 22 is constructed by connecting the unit 22a and the second door rail units 22b, 22c in abutting manner in the length direction.

Each of the first door rail units 22a and the second
The door rail unit 22b is formed symmetrically with respect to the mutual abutting surfaces as an axis, and
Both second door rail units 22b and 22c are
The running bodies 1 of each door 1, 2, and 3 are formed conjointly in the same direction on the left and right with the mutual connecting abutting surfaces as an axis.
1, 13, 16', 15', 12', 14', and straight grooves 23, 24, 25 provided along the entire length thereof so as to be able to guide each door in parallel;
Near the outer ends of the straight grooves 23 to 25,
Slanted groove portion 23a that is continuous and curved toward the rear outside;
24a, 25a, and guide grooves 23b, 24b, 25b that are curved rearward and connected to each other near the inner ends of the straight grooves 23-25.

In FIG. 3, the first door rail unit 22a
This shows a case where three doors 1, 2, and 3 are connected by connecting the door rail unit 22b and the second door rail unit 22c. Groove 2
3a is formed so as to be inclined toward the rear left side, whereas the second door rail unit 22 guides the intermediate and right-side doors 2 and 3 so as to be openable and closable, respectively.
The inclined groove portions 24a and 25a of b and 22c are respectively inclined toward the rear right side and have the same shape, and are formed in a symmetrical shape with the left door rail unit 22a as described above.

This moves the left door 1 to the front of the middle door 2.
In addition, the intermediate door 2 is opened in front of the left door 1, and the right door 3 is opened in front of the intermediate door 2 so that they are stacked together, and each door 1 to
If the door is to be opened in the opposite direction to that shown in the example shown in FIG. do it.

The first and second door rail units 22a~
Each inclined groove part 23a-25a of door 1-22c
3. As shown in Figures 2 and 3 when opening and closing,
Traveling body 1 on the outer end side of doors 1, 3, 2
The doors 1, 3, and 2 are provided so that they do not interfere with each other by rotating and tilting around the fulcrums 1', 12', and 16'. On the other hand, each guide groove portion 23
b to 25b are when each door 1 to 3 is opened/closed,
The running bodies 13', 14', 15' on the inner side of the doors move the doors 1 to 3 so as to enable the above-mentioned rotation and the sliding movement of the adjacent doors 1, 2 and 2, 3. In the front-rear direction, the straight grooves 23, 24, 25 are perpendicular to each other so as to be obliquely engaged and guided toward the other door, or as shown in the figure, the respective inclined grooves 23a,
They are inclined in the same direction at a slightly smaller angle than 24a and 25a, and are formed in a communicating state.

Furthermore, each of the linear grooves 23, 24, 25 in the first door rail unit 22a and the second door rail units 22b, 22c is different from the widened differential groove 23, as clearly shown by A and B in FIG. 3 and FIG. ', 24', 25', and the widened shallow groove part 23',
24', 25' are formed by narrow deep grooves 23'', 24'', and 25'' recessed in the center of the bottom surface, and the inclined groove 23a of the first door rail unit 22a on the left side is formed into a narrow deep groove. , the guide groove portion 23b is formed as a widened shallow groove.In the same second door rail units 22b, 22c on the middle and right side, each inclined groove portion 24a, 25a is formed as a widened shallow groove, and each guide groove portion 24b, 25b is formed as a narrow width groove. Each is formed in a deep groove,
Each of the widened shallow grooves of the guide groove portion 23b and the inclined groove portions 24a, 25a communicates with the widened shallow groove portions 23', 24', 25' of the linear groove portions 23, 24, 25, and
The narrow deep grooves of the inclined groove portion 23a and the guide groove portions 24b and 25b communicate with the narrow deep groove portions 23'', 24'' and 25'' of the linear groove portions 23, 24 and 25, respectively.

By doing the above, when the door 1 is engaged or when opening/closing, the traveling body 11' is in the guide groove part 23b which is a wide shallow groove, and when the door 2 is opening/closing, This prevents the traveling body 16' from getting caught in the guide groove part 24b of the narrow deep groove, and the traveling body 12' getting caught in the guide groove part 25b of the narrow deep groove when the door 3 is opened and closed. Thus, the doors 1 to 3 can be opened and closed in parallel.

In addition, in the illustrated example, as mentioned above, each of the doors 1 to 3 is provided with supporting running bodies 17 to 19' made of rollers, etc., so that the first door rail unit 22a and the second door rail units 22b, 22c are provided with respective straight lines. A flat rail portion 23 is parallel to the groove portions 23 to 25.
c, 24c, and 25c are formed in the length direction.

Further, as the traveling bodies 11' to 16', it is preferable to use a ball caster or a roller having a small diameter portion at the tip and a large diameter portion at the base end, as shown in the drawing.

Furthermore, the support traveling bodies 17 to 19' that support and guide the door may be metal rollers, hard rubber rollers, or hard plastic rollers that are suitable for receiving the weight of the door and have sufficient strength. Use a roller.

In addition, each of the above brackets 5 to 10' is shown in FIG.
As shown in Figure 9, screws 2 are attached to each door 1 to 3.
It is fixed with screws 6 and 27, but one of the screw insertion holes 28 and 29 is a vertically elongated hole, and on the other hand, a driving material 30 is installed in advance at the mounting position on the doors 1 to 3. Drive it into the screw insertion hole 2 above.
After temporarily fixing the screw 26 inserted from 8 to the driving material 30 and positioning it in the vertical direction in this state, tighten it with this screw 26, and then tighten it with the other screw 27. It is advantageous that each of the doors 1 to 3 can be easily and precisely assembled into the door rails 21 and 22 for both the upper and lower walls.

In addition, in Figures 2 to 4, 31, 32,
33 indicates the handle of each door.

In the above configuration, in order to mount the three doors 1 to 3 in series so that they open in the directions of arrows a, b, and c in FIG. 3 as shown in the figure, the first door shown in FIG. one door rail unit 22a, and second door rail units 22b, 22c shown in FIG.
These two pieces are placed on the lower wall 4b of the door mounting frame 4 in parallel with the opening edge 4f from the left side of the lower wall 4b, and each door rail unit 22a, 22b, 2
If the straight grooves 23, 24, 25 are made to communicate on the same straight line with the longitudinal ends of the door rail units 2c aligned, each of the door rail units 22a to 22c
It is sufficient to attach screws or the like to the inner surface of the lower wall 4b by known means and lay them so as to correspond to the upper wall door rail 21. If the lower wall door rail 22 for the triple door is constructed in this way, three doors 1-3
will be incorporated as shown.

Next, the opening/closing operation of the door thus assembled will be explained based on FIGS. 3 and 4.

The left door 1, the middle door 2, and the left door 3 have left and right ends 2a, 2b of the middle door 2, and inner ends 1a, 3a of the left and right doors 1, 3, as shown by solid lines in the figure. The three doors 1 to 3 are closed in a plane with the doors butted against each other, and this closed state is maintained by a stopper or the like (not shown).
will be installed in parallel in a plane. In this state, one of the running bodies 11, 12, 16 at the upper end of each of the doors 1, 3, 2 is attached to each inclined portion 21c, 21d, 21 of the upper wall door rail 21 as shown in FIG.
e, and the other traveling bodies 13, 14, 15 are butted against the flat part 21f of the upper wall door rail 21. On the other hand, one of the separate running bodies 11', 12', 16' at the lower end of the doors 1, 3, 2 engages with each inclined groove part 23a, 24a, 25a of each door rail unit 22a to 22c, and the other running body The bodies 13', 14', 15' have respective guide grooves 23b, 25
b, 24b, respectively, and further supports the supporting running bodies 17 to 24b.
19' is in contact with each flat rail part 23c, 24c, 25c of each door rail unit 22a-22c to receive the weight of the door, and each door 1-3 is in contact with the opening edge 4f of the opening 4e in the door mounting frame 4. , the opening 3e is opened almost immediately.

To open the right door 3 from the above-mentioned closed state, first hold the handle 33 and pull it diagonally forward as indicated by the arrow c in FIG. Since a forward force acts on the running body 18', the door 3 is moved with the running bodies 12, 12' at the outer end 3b serving as a fulcrum.
Trying to rotate counterclockwise. but,
The traveling body 14' is pulled out to the straight groove part 25 by escaping obliquely forward from the guide groove part 25b along the guide groove part 25b formed at an angle, and the other traveling body 14 is moved along the plane of the door rail 21. 21f, and the support traveling body 18' moves on the flat rail section 25c of the door rail unit 22c, so that the door 3 moves forward without interfering with the intermediate door 2 in FIGS. 3 and 4. This results in the inclined state shown by the medium broken line.

Next, when the door 3 is pulled to the left, the door 3 starts in an inclined state, but the traveling bodies 12, 12'
from the inclined parts 21e, 25 to the straight groove parts 21b, 25
When the door 3 reaches the opening edge 4f of the door mounting frame 4, the door 3 is parallel to the opening edge 4f of the door mounting frame 4, and the support traveling body 18,
18' and guided by the second door rail unit 22b located in the middle, it moves linearly to the opening door stop position, and as shown by the two-dot broken line in FIGS. It is opened in a heavily armored state on the outside of 2.

In addition, when closing the door 3, when the door 3 is moved to the right from the open door state shown by the two-dot broken line, the support traveling bodies 18, 18' move the flat rail portions 25c of both door rail units 22b, 22c to one side. The traveling bodies 14 each move the flat part 21f of the upper wall door rail 21 to the right, and the other traveling body 12 moves the straight groove part 21b of the upper wall door rail 21 to the right side.
2' and 14' are door rail units 22b and 22c.
are guided by the linear grooves 24 and 25, respectively, so that the traveling bodies 12 and 1 move to the right while remaining parallel to each other.
2' reaches the inclined groove portions 21e and 25a, and the traveling body 14' reaches the straight groove portion 25b, respectively. When the door 3 is further moved to the right, the traveling bodies 12 and 12' first engage the inclined grooves 21e and 25a and become inclined, and then when the traveling body 14' engages with the guide groove portion 25b,
The door 3 is moved while gradually becoming parallel, and finally becomes parallel and moves rearward, and is closed as shown by the solid line in FIGS. 3 and 4, and is connected to the other doors 1 and 2. The inner end 3a and the right end of the intermediate door 2 are on the same plane and are butted against each other when the door is closed.

Further, when the door is closed, the traveling body 14 and the supporting traveling bodies 18, 18' are connected to the respective linear grooves 21b and 2.
5 and move backwards.

In addition, the left door 1 is opened with a heavy mounting on the outside of the middle door 2, and the middle door 2 is opened with a heavy mounting on the outside of the left door 1.
The opening and closing of these doors 1 and 2 is the same operation as the opening and closing of the door 3 described above, so a description thereof will be omitted.

Although the illustrated example shows a case where three doors are connected in series, it is also possible to connect a desired number of doors, such as four or five, by sequentially connecting the second door rail units 22b in the length direction. It's possible, of course.

<<Effects of the Invention>> As explained above, since the door rail of the inset plane-closing sliding door device according to the present invention is constructed, the door rail unit for each door has a length equivalent to the door width dimension. 22a, 22
By independently forming the door rail units 22a, 22b in a divided state, a desired number of door rail units 22a, 22b, such as two, three, four, etc., can be connected in the length direction to attach the lower wall 4b, etc. of the door mounting frame 4. By laying the door rail, it is possible to easily construct a door rail that can connect a desired number of doors in series.Moreover, two types of door rail units 23 with symmetrical directions of the inclined grooves can be constructed.
a, 22b, and by connecting an appropriate number of these in an appropriate arrangement in the length direction, the opening direction of multiple doors can be freely set to right-hand or left-hand as necessary. In addition, since the door rail units 22a and 22b are formed short and have a length equivalent to the door width dimension, they are easy to manufacture and can be provided at low cost. It can be done easily.

[Brief explanation of the drawing]

1A and 1B are plan views of an embodiment showing a pair of door rails used in the inset plane closing and sliding door device according to the present invention, and FIG. 2 is an inset plane closing and sliding door device showing an example of use of the same embodiment. A longitudinal sectional front view of the door device, FIGS. 3 and 4 are a plan view of a lower wall door rail and a bottom view of an upper wall door rail in an example of use of the same embodiment, and FIG. 5 is a -
6 and 7 are cross-sectional views taken along the - line and - line in FIG.
8 and 9 are a longitudinal sectional front view showing the bracket at the lower end of the door in the same embodiment, and a longitudinal sectional side view showing the main part of the bracket attached to the door, respectively. 1-3...Door, 4...Door mounting frame, 11-1
6'... Traveling body, 22a... First door rail unit, 22b, 22c... Second door rail unit, 23, 24, 25... Straight groove portion, 23
a, 24a, 25a...slanted groove portion, 23b, 24
b, 25b...Guide groove portion.

Claims (1)

[Claims] 1 Both upper and lower ends of two or more doors 1, 2, and 3, both outer ends in the width direction of the doors 1, 2, and 3
Two running bodies 13, 13', 11, 11', 15, 15' for a, 1b, 2a, 2b, 3a, 3b,
16, 16', 14, 14', 12, 12' are provided,
On the other hand, on the opposing surfaces of the upper wall 4a and lower wall 4b of the door mounting frame 4, a door rail 21 for the upper wall and a door rail 2 for the lower wall are provided.
2 is formed, and either the upper wall door rail 21 or the lower wall door rail 22 is connected to each door 1, 2, 3.
The straight grooves 23, 24, 25 corresponding to the straight grooves 23, 24, 25 and the left and right sides of each of these straight grooves 23, 24, 25,
Slanted groove portions 23a, 24a, 25a that are continuously formed to slope outward toward the rear or front, and guide groove portions 23b that are also curved toward the rear or the front.
24b, 25b, the traveling body 13,
13', 11,11', 15,15', 16,1
6', 14, 14', 12, 12' are engaged with the upper wall door rail 21 and the lower wall door rail 22 of the doors 1, 2, 3, and the inclined groove portion 23
a, 24a, 25a and guide groove portions 23b, 24b,
25b and 11', 13', 16', 1 in the traveling body.
5', 12', 14' are engaged, so that the doors 1, 2, 3 are moved to the inner end portions 1a, 2a, 2, respectively.
It becomes a flat closed door state where b and 3b are butted together,
The doors 1, 2, and 3 are configured to move from the closed door state to the straight groove portions 23, 24, and 25, and to freely open when stacked on the front or back of an adjacent door. In the inset plane closing sliding door device, the upper wall door rail 21 or the lower wall door rail 22 has a first door rail whose length is slightly shorter than the widthwise dimension of each door 1, 2, and 3. Each door 1, 2, 3, which is the unit 22a and the second door rail unit 22b, 22c, is provided with an independent vehicle body, and the first door rail unit 22a and the second door rail unit 22b, 22c are mutually connected. The door rails 21 and 22 for the upper wall or lower wall are configured by being connected in a butted state in the length direction, and the first door rail unit 22a and the second door rail unit 22b are connected to each other in the above-mentioned mutual connection. It is formed symmetrically around the abutting surface, and
Both second door rail units 22b and 22c are
The first door rail unit 22a and the second door rail unit 22b, 2 are formed conjointly in the same direction on the left and right with the mutual connecting and abutting surfaces as an axis.
Each of the above-mentioned straight groove portions 23, 24, 25 in 2c
is formed by widened shallow grooves 23', 24', 25' and narrow deep grooves 23'', 24'', 25'' recessed in the center of the bottom of the widened shallow grooves 23', 24', 25'. and the first door rail unit 22
In the second door rail units 22b and 22c, the inclined groove portions 23a and 25a of the second door rail units 22b and 22c are formed as widened shallow grooves, respectively, and the guide groove portions 23b are formed as widened shallow grooves.
b, 25b are formed as narrow deep grooves, respectively, and the widened shallow grooves of the guide groove portion 23b and the inclined groove portions 24a, 25a are the same as the widened shallow grooves 23', 24', 25 of the linear groove portions 23, 24, 25. ', and the narrow deep grooves of the inclined groove part 23a and the guide groove parts 24b, 25b communicate with the narrow deep groove parts 23'', 24'', 25'' of the straight groove parts 23, 24, 25, respectively. A door rail for an inset plane closing sliding door device.