KR102289862B1 - Sliding door rail to reinforce the structure with gap - Google Patents

Abstract

A gap structure reinforcement type sliding door rail is disclosed. The crevice structure reinforcement sliding door rail according to the present invention is a door rail that is installed long on the floor along the opening/closing direction of the door to support and guide the opening of the sliding door, and has a predetermined width along the opening/closing direction. a seating part that is formed and is in close contact with the floor; a pair of vertical ends protruding upward from the seating portion spaced apart from each other and formed along the opening/closing direction; a pair of horizontal support parts extending in the width direction at each upper end of the vertical end to support the door car so that a seating hole into which the protrusion of the door car is inserted is provided between the vertical ends; and a gap replenishing part extending from the seating part to support the load on the gap space and finish the floor surface instead of the finishing material inserted between the end of the seating part and the horizontal support part. . According to the present invention, basically, the installation and fixation on the construction floor surface is easily performed, while the ends of the finishing materials arranged on the floor surface can be firmly fixed without a separate fastening means, and the sliding in the opening and closing direction of the sliding door is stable and smooth. It is guided, and the finishing and structural reinforcement of the gap space that occurs in the installation area of the door rail for various reasons can be made at once, so that the breakage or dentation of the gap space can be effectively prevented.

Description

Gap Structure Reinforced Sliding Door Rail {SLIDING DOOR RAIL TO REINFORCE THE STRUCTURE WITH GAP}

The present invention relates to a gap structure reinforcement sliding door rail, and more particularly, to a door rail installed between floor finishing materials to guide the opening and closing operation of a sliding door installed in an office space or a residential space.

In general, sliding doors in the form of sliding doors are commonly installed and used in apartments, officetels, and company buildings to selectively allow entry and exit while dividing spaces.

That is, the sliding door used to separate the living room and the kitchen of a residential space or to divide each space of the office is a guide rail installed between the floor finishing material through the door installed under the door as a medium, and a support installed on the ceiling. By being supported and guided by the rail and sliding in both directions, the partitioned space is opened and closed.

As a prior art, Korean Patent Registration No. 10-1180620 (announced date: September 6, 2012) discloses a track structure for a sliding door. As shown in FIG. 6, the present prior art is a bottom fastening frame in which a plurality of fastening walls 120 are formed in the longitudinal direction in a state in which a distance is maintained at the central portion of the rectangular plate 110 long in the longitudinal direction ( 100) and the fastening wall 120, which is formed long in the longitudinal direction so as to be fastened, the bottom surface and both sides form a 'C' shape with only the upper surface open in a closed state, and at the ends of the both sides a roller insertion part ( It is composed of a rail frame 200 in which the extension pieces 220 are respectively formed so that the 210 is formed in the center.

According to the track (door rail) structure for a sliding door having such a structure, in the case of a place where the floor finishing material can be installed in a state where the floor finishing material is completely in close contact with the plate material 110 and the fastening wall 120 on both sides of the track, the floor surface It has the advantage of being able to conveniently perform flat work and construction of tracks and finishing materials.

However, due to the structure of the installation space, if the track is installed around obstacles (walls, columns) or in a corner where it is difficult to install the floor finishing material in a state in which it is completely in close contact with the plate 110 and the fastening wall 120 on either side of the track, There was a problem in that a gap space in which it was difficult to install a finishing material was inevitably generated. (See Fig. 4)

As the finishing for such a gap space is generally made at a level of simply shielding the gap space with a predetermined cover plate spaced apart by the thickness of the finishing material, it cannot structurally properly support the load applied from the upper part, and it is easily dented. there was

In addition, even when the length of the finishing material itself is shortened due to insufficient quantity of the floor finishing material, errors or errors in cutting the finishing material, or construction errors in the floor structure, the floor finishing material itself is the plate 110 and the fastening wall on either side of the track. Since it cannot be installed in a state in which it is completely in close contact with 120, the above gap space is generated. (See FIG. 3)

Therefore, there is a demand for improvement or improvement of the door rail structure that can be neatly finished in the gap space that occurs for various reasons as described above, and that can be firmly supported without being depressed even by the load applied from the upper part after it is finished.

Republic of Korea Patent Registration No. 10-1180620 (Announcement Date: September 6, 2012)

The object of the present invention is, basically, it is easily installed and fixed on the floor to guide the sliding in the opening/closing direction of the sliding door stably and smoothly, as well as fixing the ends of the finishing materials arranged on the floor without a separate fastening means. , to provide a sliding door rail with a crevice structure reinforced in which the finishing and structural reinforcement of the crevice space that occurs in the installation area of the door rail for various reasons can be accomplished together at once.

The above object is a door rail that is long installed on the floor along the opening and closing direction of the door to support and guide the opening of the sliding door. ; a pair of vertical ends protruding upward from the seating portion spaced apart from each other and formed along the opening/closing direction; a pair of horizontal support parts extending in the width direction at each upper end of the vertical end to support the door car so that a seating hole into which the protrusion of the door car is inserted is provided between the vertical ends; and a gap filling part extending from the seating part to support the load on the gap space and finish the floor surface instead of the finishing material inserted between the end of the seating part and the horizontal support part. This is achieved by a gap structure reinforcement type sliding door rail.

The gap replenishing part may include: a support in the shape of a angular pipe protruding upward from the seating part at a predetermined distance from the adjacent horizontal support part to support a load applied from the upper part; and a cover member that is in close contact with a portion of the upper surface of the support and a lower surface of the horizontal support and is fitted between the vertical end and the support to close the bottom surface.

The support may be formed by bending a part of the seating part, by welding a separately manufactured angular pipe to the seating part, or by injection molding or extrusion molding integrally with the seating part.

The horizontal support part, the insertion part bent so as to fit into the inner space formed by the seating part and the vertical end; and a pair of door support parts extending in the width direction at each upper end of the insertion part to support the door car so that the seating hole into which the protrusion of the door car is inserted is provided inside the insertion part.

The horizontal support unit may be separately manufactured as a plurality of module sets corresponding to the door cars of various specifications, and may be selectively fitted between the vertical ends.

The cover member may further include a coupling end protruding downward from one side so as to surround the upper surface and the side surface of the support and to be fitted to the support.

A hook-type fastening protrusion is formed on one side of the coupling end and one side of the support facing it, and on the other one of the coupling end one side and one side of the support facing it, the fastening protrusion is caught or fitted A fastening groove may be formed.

The gap replenishing unit may further include an expansion slider that slides in the width direction with respect to the support according to the size of various gap spaces and expands or contracts the support area.

The expansion slider may include an expansion body formed in a shape of a angular pipe corresponding to the support body; And in order to guide the sliding movement of the expanded body, it may include a guide projection that is formed to protrude in the width direction from the expanded body and fit into the slide groove of the support.

The gap filling part has a complementary shape along an area in which the upper surface of the support body and the upper surface of the extended body face each other and contact each other in order to achieve uniform support for the load when the support area is expanded by the expansion slider. It may further include a support unevenness formed continuously.

According to the present invention, as a seating part to be installed in close contact with the floor surface and a pair of horizontal support parts for supporting and guiding the door car of the sliding door are provided on a pair of vertical end upper parts, it is basically easy to install and fix on the construction floor surface. Meanwhile, the end of the finishing material arranged on the floor can be firmly fixed without a separate fastening means, and there is an effect that the sliding in the opening and closing direction of the sliding door is guided stably and smoothly.

In addition, in place of the finishing material inserted and installed between the end of the seating part and the horizontal support part, as the gap filling part that supports the load for the gap space and finishes the floor surface is formed extending from the seating part, the installation area of the door rail for various reasons. As the finishing and structural reinforcement of the interstitial space that occurs in the interstitial space can be made at once, damage or dentation of the interstitial space can be effectively prevented.

1 is a perspective view of a gap structure reinforcement type sliding door rail according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of FIG. 1 .
FIG. 3 is a cross-sectional view illustrating the use state of FIG. 1 .
FIG. 4 is a cross-sectional view showing a modified example of a use state different from that of FIG. 3 and a gap filling part.
5 is a cross-sectional view showing another modified example of the gap filling part and its use state.
6 is a view showing a cross-section of a conventional door rail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.

1 is a perspective view of a gap structure reinforcement type sliding door rail according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1 , FIG. 3 is a cross-sectional view for showing the use state of FIG. 3 is a cross-sectional view showing a different usage state and a modified example of the gap filling part, FIG. 5 is a cross-sectional view showing another modified example of the gap filling part and its use state, and FIG. 6 is a view showing a cross-section of a conventional door rail.

The X and Y axes shown in the drawings are directions on a horizontal plane arbitrarily determined for convenience of explanation rather than for the purpose of limiting rights, the X axis indicates a direction perpendicular to the opening/closing direction of the door, and the Y axis is seated on the door rail and sliding Each is defined as indicating the opening/closing direction of the door being used. Each direction described below is based thereon, except where otherwise specifically limited.

The crevice structure-reinforced sliding door rail 100 according to the present invention is basically an easy installation and fixation to the construction floor surface 20, a firm fixation to the end of the finishing material 30 arranged on the floor surface 20, and sliding In addition to promoting stable and smooth sliding in the opening/closing direction (Y-axis) of the door 10, furthermore, the finishing and structural reinforcement of the gap space GS occurring in the installation area of the door rail 100 due to various reasons It is an invention devised to make it happen at once.

Here, the door rail 100 of the present invention is an installation member that is paired with the sliding door 10 and is used together with an exterior finishing material 30 such as wood or marble, and as shown in FIG. 3 , the door 10 ) is installed on the floor 20 along the opening/closing direction (Y-axis) to support and guide the door 12 (roller) of the door 10 .

In order to implement the above-described functions or actions in detail, the gap structure reinforcement sliding door rail 100 according to the present invention is, as in the embodiment shown in FIGS. 1 to 3, a seating part 110, a vertical The stage 120 , the horizontal support unit 130 , and the gap filling unit 140 may be included.

Here, in the door rail 100 according to the embodiment of the present invention, as shown in FIG. 2 , the seating part 110 , the vertical end 120 and the gap filling part 140 are integrally injected or extrusion molded, After the horizontal support parts 130a and 130b composed of a plurality of module sets are separately manufactured, they are formed in a structure in which they are selectively fitted to correspond to the door cars 12 of various standards, respectively.

Of course, unlike the figure, without the premise of replacing the horizontal support unit 130, the seating portion 110, the vertical end 120, the horizontal support portion 130 and the gap filling portion 140 are all integrally injected or extruded. It may be molded to constitute the door rail 100 of the present invention.

On the other hand, the door rail 100 according to the present invention, as shown in the modified examples shown in FIGS. 4 and 5, respectively, the seating part 110, the vertical end 120, the horizontal support part 130, the modified gap filling part ( 140) and the extension slider 150 may be included.

Hereinafter, each of the above-mentioned components will be described in detail.

First, the seating portion 110 is a component that is formed to be elongated along the opening/closing direction (Y-axis) with a predetermined thickness and width and is in close contact with the bottom surface 20 , and has a rectangular plate shape as a whole.

The seating portion 110 may be installed on an installation surface in which the bottom surface 20 is concavely cut to a depth corresponding to the thickness of the seating portion 110 , which has one end supported by the seating portion 110 . This is to prevent the finishing material 30 from being lifted off the bottom surface 20 .

The vertical end 120 is a pair of components provided to provide a space in which the seating hole 132 in which the protrusion 12a of the door car shown in FIG. 3 is inserted and mounted is formed, and each other in the seating part 110 It protrudes upward in a spaced state and is formed to be long along the opening/closing direction (Y-axis).

The vertical end 120 may be manufactured to have a protrusion height corresponding to the thickness of the finishing material 30 for fixing to the end of the finishing material 30 supported on the seating part 110 as will be described later.

The horizontal support unit 130 is a pair of components that support the door 12 of the sliding door 10 so that the door 12 of the sliding door 10 smoothly rotates and slides without departing from the opening/closing direction (Y-axis). It may be formed by extending in the width direction (X-axis) at each upper end of the vertical end 120 so that the seating hole 132 into which the protrusion 12a is inserted can be provided between the aforementioned vertical ends 120 .

That is, although different from that shown in FIG. 2 , the horizontal support unit 130 according to the present invention is not premised on replacement, in the vertical end 120 integrated with the seating unit 110 by injection molding or extrusion molding. The seating hole 132 may be provided and may be integrated in an expanded form.

In addition, the horizontal support parts 130, 130a, 130b according to an embodiment of the present invention are not integrally formed with the seating part 110 and the vertical end 120 as shown in FIG. 2, but a set of a plurality of modules. After each is individually manufactured, it is selectively replaced in response to the door car 12 of various specifications, and has a structure that is fitted between a pair of vertical ends 120 .

Each of the horizontal support parts 130, 130a, 130b composed of a plurality of module sets in this way specifically includes an insertion part 134 and a pair of door-car support parts 136, etc. as shown in FIGS. 2 and 3 . can be configured.

The insertion part 134 is a component formed under the horizontal support part 130 so that the horizontal support part 130 is fitted into the inner space S formed by the seating part 110 and the pair of vertical ends 120 . As shown in the figure, it can be bent into a shape corresponding to the 'C'-shaped internal space (S) with an open upper side and fit into the internal space (S).

At this time, a spacer for height adjustment may be interposed between the lower surface of the insertion part 134 and the upper surface of the inner space S according to the height of the finishing material 30 or the door 10 construction conditions.

The door support part 136 is a pair of components that support the door 12 of the door 10 and guide the sliding movement of the door 10, and a seating hole 132 into which the protrusion 12a of the door 10 is inserted. ) is formed to expand in the width direction (X-axis) at each upper end of the insertion unit 134 so as to be provided inside the insertion unit 134 to support the door car 12 .

At this time, as the door 12 of the door 10 is supported by the door support 136 with the protrusion 12a of the door 10 inserted into the seating hole 132, the door 10 is supported by the horizontal support unit 130 ) and the opening/closing direction (Y axis), it can slide smoothly in both directions.

As shown in FIGS. 2 and 3, each of the door support parts 136 made of a pair in this way has an outer end that is inclined downward to the outside (the opposite direction of the seating hole 132) with respect to the flat upper surface, It is composed of an inner end inclined downward toward the inside (in the direction of the seating hole 132) to form a streamlined overall shape.

Here, the outward downward inclination prevents foreign substances from being stacked on the central upper surface and the outer end side, while, as shown in FIGS. By firmly pressing and fixing the end of the finishing material 30 arranged on the bottom surface 20 without a separate fastening means, separation or lifting of the finishing material 30 is prevented.

And the inner downward slope is to naturally support the door car 12 positioned between the central upper surface and the inner end to induce smooth rolling of the door car 12 .

The horizontal support unit 130 according to the embodiment as described above is disposed on the upper end of the vertical end 120 through the fitting for the vertical end 120 integrated with the seating unit 110 by injection or extrusion molding, so that various By supporting and guiding the standard door 12, the utility or versatility of the present invention can be expanded.

The gap replenishing unit 140 is a component provided to efficiently reinforce and finish the gap space GS generated in the installation area of the door rail 100 for various reasons, and this is a conventional door 10 . ), it is clearly differentiated in that it is a structure that has not been considered at all.

The gap filling part 140 is finished so that the bottom surface 20 exposed through the gap space GS is not exposed to the outside, while the seating part ( 110) may be formed by extension.

Here, the gap space GS is an external exposed space in which a load is supported and closed by the finishing material 30 inserted and installed between the end of the seating part 110 and the horizontal support part 130, and the finishing material 30 is installed for various reasons. It refers to a space that is difficult or difficult to be closely coupled with the door rail 100 .

At this time, in several cases where the gap space GS is formed, as shown in FIG. 3 , due to insufficient quantity of the finishing material 30, errors or errors in cutting the finishing material 30, errors in construction of the floor surface 20 structure, etc., the finishing material ( 30) It may be the case that the length of itself is shortened.

In addition, the gap space GS is an obstacle (wall 25, column) that is difficult to install in a state in which the finishing material 30 is completely in close contact between the end of the seating part 110 and the horizontal support part 130, as shown in FIG. This may occur when the door rail 100 is present in the vicinity of the installation position or a corner is adjacent to the installation position of the door rail 100 .

The gap filling part 140 according to the embodiment of the present invention, as shown in FIGS. 2 to 3 , may include a support 142 and a cover member 144 .

The support body 142 is a angular pipe-shaped component that protrudes upward from the seating part 110 at a predetermined distance from the horizontal support part 130 adjacent to the gap space GS to support the load applied from the upper part, and is seated. A part of the part 110 is bent and formed integrally with the seating part 110 , or each pipe manufactured separately may be welded to the seating part 110 .

In addition, the support 142 may be formed integrally with the seating portion 110 (and the vertical end 120) through injection molding using a synthetic resin or extrusion molding using a metal as a material.

As described above, since the gap filling part 140 is integrally formed with the seating part 110 and the vertical end 120 , the door rail 100 according to the present invention for guiding the sliding door 10 is installed on the floor surface Without being restricted by the structure of (20), etc., it can be installed quickly and conveniently with a minimized number of parts in the gap space (GS) as well as the exposed space where the close installation of the finishing material (30) is possible.

The cover member 144 is in close contact with a portion of the upper surface of the support 142 and the lower surface of the horizontal support 130 , and is fitted between the vertical end 120 and the support 142 , and the bottom surface 20 of the gap space GS. ) is a plate-shaped component that shields and finishes exposure to the outside, and an adhesive material may be applied between the contact surfaces for firm attachment to the support 142 and the like.

The cover member 144 according to the embodiment of the present invention, as shown in FIGS. 2 to 3 , may be made of a 'L'-shaped bent plate consisting of a vertically interposed end and a horizontal shielding end. .

At this time, the interposed end is manufactured to have a length corresponding to the vertical end 120 , and the shielding end is manufactured to have a corresponding length that can shield the gap space GS.

When such a fitting end is inserted between the vertical end 120 and the support 142 fixedly installed on the bottom surface 20, the shielding end is easily attached to the support 142 by an adhesive material or the like, and then the horizontal support part in the inner space (S). When the 130 is fitted, one side of the upper surface of the shielding end may be firmly pressed and fixed by the outer end.

Due to the above coupling structure, the cover member 144 can be installed neatly in the gap space GS, and the separation or lifting of the cover member 144 can be effectively prevented.

On the other hand, the gap filling part 140 according to a modified example of the present invention is made by adding a partially deformed structure in comparison with the embodiment as shown in FIGS. 4 and 5 .

That is, in order to increase the fastening force between the cover member 144 and the support body 142 without the application of an adhesive material, the gap filling part 140 according to the modified example has a coupling end 145 and a fastening protrusion 145a as shown in FIG. 4 . And the fastening groove (145b) may be manufactured in a modified form in which it is added.

Here, the coupling end 145 is configured to protrude downward from one side of the cover member 144 so that the cover member 144 surrounds the entire or part of the upper surface and the side surface of the support body 142 and is fitted to the support body 142 . is an element

And the fastening protrusion 145a is a component formed to protrude in the form of a hook from one side of the above-described coupling end 145 and one side of the support 142 facing the same.

And the fastening groove 145b is a component formed concavely in the form in which the fastening protrusion 145a is caught or fitted in the other one of the one side of the above-described coupling end 145 and one side of the support 142 facing the same. am.

As shown above, the fastening protrusion 145a may be formed to protrude in the form of a hook from one side of the shielding end of the cover member 144, and the fastening groove 145b is the support 142 facing the fastening protrusion 145a. ) It is of course also possible that the fastening protrusion 145a is formed concavely in the form of being caught or fitted from one side.

In addition, the gap replenishing unit 140 according to another modification of the present invention, in order to be more universally used in response to the gap space GS of various sizes, (a) and (b) of Figure 5 The expansion slider 150 that can be stretched and deformed may be deformed and manufactured in the added form.

Here, the expansion slider 150 is a component that slides in the width direction (X-axis) with respect to the support body 142 and expands or contracts the support area. As specifically shown in FIG. 5, the expansion body 152, It may be configured to include a guide protrusion 154 and support irregularities 156a and 156b.

The extended body 152 is a component that is formed in a shape of a angular pipe corresponding to the support 142 and is arranged side by side in the horizontal direction.

And the guide protrusion 154 is formed to protrude in the width direction (X-axis) from the extended body 152 to guide the slide movement of the extended body 152 and is fitted into the slide groove 143 of the support body 142 . is an element

And the support irregularities (156a, 156b) are components provided to uniformly support the load when the support area is expanded by the expansion slider 150, and the upper surface of the support body 142 and the expansion body 152. The upper surfaces of the two face each other and are continuously formed in complementary shapes along the contacting regions.

The fastening between the cover member 144 and the support 142 can be made robustly and simply without applying an adhesive material due to the gap filling part 140 deformed to the structure as described above, and the gap space GS of various sizes. ), the door rail 100 according to the present invention can be used more universally as it becomes possible to adjust the extension slider 150 corresponding to (FIG. 5 (a) and (b)).

In the foregoing, specific embodiments of the present invention have been described and shown, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

10: sliding door 12: car
12a: protrusion of door car 20: bottom surface
25: wall 30: finishing material (wood, marble)
Y-axis: Opening/closing direction X-axis: Width direction
GS: niche space
100: gap structure reinforcement type sliding door rail
110: seating part 120: vertical end
S: inner space 130: horizontal support part
130a, 130b: a set of multiple modules 132: seating hole
134: insertion part 136: door support part
140: gap filling part 142: support
143: slide groove 144: cover member
145: coupling end 145a: fastening protrusion
145b: fastening groove
150: extension slider 152: extension body
154: guide projections 156a, 156b: support irregularities

Claims (10)

A door rail installed long on the floor along the opening/closing direction of the door to support and guide the opening of the sliding door,
a seating portion formed along the opening/closing direction with a predetermined width to be in close contact with the floor; a pair of vertical ends protruding upward from the seating portion spaced apart from each other and formed along the opening/closing direction; a pair of horizontal support parts extending in the width direction at each upper end of the vertical end so that a seating hole into which the protrusion of the door car is inserted is provided between the vertical ends to support the door car; and a gap filling part extending from the seating part to support the load on the gap space and finish the floor surface instead of the finishing material inserted between the end of the seating part and the horizontal support part,
The gap filling part,
a support in the shape of a angular pipe protruding upward from the seating part at a predetermined distance from the adjacent horizontal support part to support a load applied from the top; and
and a cover member that is in close contact with a portion of the upper surface of the support and a lower surface of the horizontal support and is fitted between the vertical end and the support to close the bottom surface,
The crevice structure-reinforced sliding door rail, characterized in that it further comprises an extension slider that slides in the width direction with respect to the support according to the size of various gap spaces and expands or contracts the support area. delete According to claim 1,
The support is
A portion of the seating portion is formed by bending, or
Each pipe manufactured separately is welded to the seating part, or
A gap structure reinforcement sliding door rail, characterized in that it is injection-molded or extrusion-molded integrally with the seating part. According to claim 1,
The horizontal support unit,
an insertion part bent so as to be fitted into the inner space formed by the seating part and the vertical end; and
A gap, characterized in that it comprises a pair of door support support for supporting the door by extending in the width direction at each upper end of the insertion section so that the seating hole into which the protrusion of the door car is inserted is provided inside the insertion section Structure-reinforced sliding door rail. 5. The method of claim 4,
The horizontal support unit,
A crevice structure reinforcement sliding door rail, characterized in that it is separately manufactured as a set of a plurality of modules corresponding to the door cars of various specifications, and is selectively fitted between the vertical ends. According to claim 1,
The cover member,
The gap structure-reinforced sliding door rail which surrounds the upper surface and the side surface of the support and further includes a coupling end protruding downward from one side so as to be fitted to the support. 7. The method of claim 6,
A hook-type fastening protrusion is formed on one side of the coupling end and one side of the support facing the same,
A crevice structure reinforcement sliding door rail, characterized in that a fastening groove through which the fastening protrusion is caught or fitted is formed on one side of the coupling end and the other one of the side of the support body facing the coupling end. delete According to claim 1,
The extension slider is
an expanded body formed in a shape of a angular pipe corresponding to the support; and
In order to guide the sliding movement of the expanded body, the sliding door rail with a crevice structure, characterized in that it comprises a guide projection that is formed to protrude in the width direction from the expanded body and fit into the slide groove of the support. 10. The method of claim 9,
The gap filling part,
In order to achieve uniform support for the load when the support area is expanded by the extension slider, the upper surface of the support body and the upper surface of the extended body face each other and continuously form support irregularities in complementary shapes along the contact area. Reinforced gap structure sliding door rail, characterized in that it further comprises.

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