Sliding door assembly based on composite profile

Abstract

The utility model relates to the technical field of sliding doors, in particular to a sliding door assembly based on composite profiles, which is characterized in that four sides of a composite door frame respectively comprise a plastic groove-shaped piece I, an aluminum alloy profile I buckled on the front wall of the plastic groove-shaped piece I and a plastic sealing edge I buckled on the outer sides of the plastic groove-shaped piece I and the aluminum alloy profile I; front and rear grooves are respectively formed in the front and rear sides of the middle of the inner side of the plastic groove-shaped piece; the sliding door plate comprises a glass plate, second plastic groove-shaped pieces clamped to the periphery of the glass plate, second aluminum alloy profiles buckled to the front walls of the second plastic groove-shaped pieces, and second plastic sealing edges buckled to the outer sides of the second plastic groove-shaped pieces and the outer sides of the second aluminum alloy profiles on the two sides, and the lower sides of the second plastic groove-shaped piece and the second aluminum alloy profiles at the bottom are connected with a sliding base shell in a clamped mode. A sliding block is fixed in the sliding seat shell; the sliding rail assembly comprises supporting rails clamped in a front groove and a rear groove of the first bottom plastic groove-shaped piece and sliding strips clamped to the top faces of the supporting rails. The sliding door has the advantages of being capable of saving energy, high in strength, attractive in appearance and easy to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to sliding door technical field, concretely is a sliding door assembly based on composite section bar. BACKGROUND

[0002] For the showcase, commonly equipped with the sliding door of installation. The commonly used sliding door generally includes door frame, the door plate of being installed in the door frame in pairs and the slide rail of being installed at the bottom of the door frame.

[0003] Traditionally, the door frame and the door plate outer frame matched with the sliding door are assembled by four integral type section bar structures, and the material is generally aluminum alloy or plastic. When the aluminum alloy material is selected, the heat insulation effect is poor, especially when used for the refrigerated cabinet, not enough energy saving, when the plastic material is selected, the strength is insufficient and not enough beautiful. And in the prior art, the method of using composite structure instead of single material section bar gradually appears, but there is still the problem of not convenient to disassemble.

[0004] Therefore, at present, there is an urgent need for a sliding door assembly with energy saving, high strength, beauty and easy disassembly to solve the above problems. INVENTION CONTENTS

[0005] The utility model discloses a sliding door assembly based on composite section bar, which is used to solve the problem that the current sliding door is difficult to have energy saving, high strength, beauty and easy disassembly.

[0006] To achieve the above object, the utility model provides the following technical scheme: a sliding door assembly based on composite section bar, including composite door frame, sliding door plate and slide rail assembly, four edges of the composite door frame respectively include plastic channel piece one, aluminum alloy section bar one buckled to the front wall of the plastic channel piece one and plastic edge one buckled to the outside of the plastic channel piece one and aluminum alloy section bar one, the front and back sides of the middle part of the inside of the plastic channel piece one are respectively provided with front groove and back groove;The sliding door plate includes glass plate, plastic channel piece two clamped to the four sides of the glass plate, aluminum alloy section bar two buckled to the front wall of the plastic channel piece two and plastic edge two buckled to the outside of the plastic channel piece two and aluminum alloy section bar two at both sides, and the lower side of the plastic channel piece two and aluminum alloy section bar two at the bottom is jointly clamped with slide housing, and the slide housing is fixed with sliding block;The slide rail assembly includes support rail clamped in the front groove and back groove of the plastic channel piece one at the bottom and slide strip clamped in the middle part of the top surface of the support rail and matched with the sliding block sliding clamping.

[0007] Preferably, the rear part of the outer side wall of the plastic channel-shaped piece is provided with an outer channel, the middle part of the outer side wall of the plastic channel-shaped piece is provided with a strip-shaped groove one, the outer end of the rear wall of the outer channel is provided with a strip-shaped clamping head one protruding forward, the middle part of the front wall of the outer channel is provided with a strip-shaped protrusion one, the aluminum alloy profile one includes an edge plate one and a support plate one which is perpendicular to the middle part of the rear wall of the edge plate one, the inner side of the rear wall of the edge plate one is provided with a hook groove one which is clamped to the inner side of the front wall of the plastic channel-shaped piece one, the inner side wall of the support plate one is provided with a strip-shaped protrusion two which is clamped and matched with the strip-shaped groove one, the outer side wall of the support plate one is provided with a support strip, the rear wall of the edge plate one is provided with a strip-shaped protrusion three at the position outside the support plate one, the front end of the plastic edge one is provided with a strip-shaped clamping head two which is clamped to the inner side of the strip-shaped protrusion three, the rear end of the plastic edge one is provided with a U-shaped part one which is buckled and matched with the outer channel, the outer end of the rear wall of the U-shaped part one is provided with a strip-shaped clamping groove two which is clamped and matched with the strip-shaped clamping head one, and the inner side wall of the plastic edge one is supported on the support strip.

[0008] Preferably, the rear end of the outer side wall of the plastic channel-shaped piece two is provided with an extension plate, the front wall of the outer end of the extension plate is provided with a strip-shaped clamping head three, the outer side wall of the plastic channel-shaped piece two is provided with a strip-shaped groove two near the middle part, the aluminum alloy profile two includes an edge plate two which is attached to the front wall of the plastic channel-shaped piece two and a support plate two which is vertically arranged at the middle part of the rear wall of the edge plate two, the inner end of the edge plate two is provided with a hook groove two which is clamped to the inner end of the front wall of the plastic channel-shaped piece two, the inner side of the rear end of the support plate two is provided with a strip-shaped clamping head four which is clamped and matched with the strip-shaped groove two, the rear wall of the outer end of the edge plate two is provided with a strip-shaped clamping head five, the plastic edge two includes an edge plate three and a U-shaped part two which is arranged at the inner side wall of the edge plate three and is clamped between the extension plate and the outer end of the edge plate two, the front end of the inner side wall of the edge plate three is provided with a strip-shaped clamping head six which is clamped and matched with the strip-shaped clamping head five, and the rear wall of the U-shaped part two is provided with a strip-shaped protrusion four which is clamped and matched with the strip-shaped clamping head three.

[0009] Preferably, the edge plate three is provided with a strip-shaped opening corresponding to the middle part of the inner cavity of the U-shaped part two.

[0010] Preferably, each of the sliding door plates is respectively provided with two glass plates which are arranged in parallel, and the edges of the two glass plates are respectively fixed to the front and rear ends of the inner cavity of the plastic channel-shaped piece two.

[0011] Preferably, the inner cavities of the front channel and the rear channel of the plastic channel-shaped piece one at the bottom are respectively clamped with a plurality of support blocks through the strip-shaped clamping groove one, and the support blocks are clamped with the top surface of the support rail at the bottom.

[0012] Preferably, the plastic channel-shaped piece one, the plastic edge one, the plastic channel-shaped piece two and the plastic edge two are respectively made of one of PVC, ABS, PP, PC and glass fiber extrusion materials.

[0013] Compared with the prior art, the sliding door assembly based on the composite profile has the advantages that:

[0014] 1. The door frame and the frame of the sliding door plate of the sliding door assembly based on the composite profile are in the form of combination of the plastic profile and the aluminum alloy profile, wherein the aluminum alloy profile is used as a decorative surface, so that the sliding door has high strength and aesthetic appearance, and has good heat and cold insulation effect, and plays a role of energy saving.

[0015] 2. The sliding door assembly based on the composite profile comprises the door frame, the sliding door plate and the slide rail assembly, and the door frame, the sliding door plate and the slide rail assembly have a plurality of parts which are convenient for mutual buckling and clamping, so that the sliding door is convenient for disassembly and assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the whole utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the composite door frame of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the plastic trough-shaped part one of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the aluminum alloy profile one of the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the plastic edge sealing one of the utility model;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the sliding door plate of the utility model;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the plastic trough-shaped part two of the utility model;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the aluminum alloy profile two of the utility model;

[0024] Figure 9 It is a schematic diagram of the three-dimensional structure of the plastic edge sealing two of the utility model;

[0025] Figure 10 It is a schematic diagram of the three-dimensional structure of the slide rail assembly of the utility model;

[0026] Figure 11 It is a schematic diagram of the three-dimensional structure of the utility model Figure 1 It is an enlarged structure schematic diagram of A in the utility model.

[0027] In the figure: 1 - composite door frame; 1.1 - plastic channel one; 1.1.1 - front channel; 1.1.2 - rear channel; 1.1.3 - outer channel; 1.1.4 - strip-shaped clamping head one; 1.1.5 - strip-shaped protrusion one; 1.1.6 - strip-shaped groove one; 1.1.7 - strip-shaped clamping groove one; 1.2 - aluminum alloy profile one; 1.2.1 - edge plate one; 1.2.2 - support plate one; 1.2.3 - hook groove one; 1.2.4 - strip-shaped protrusion two; 1.2.5 - support strip; 1.2.6 - strip-shaped protrusion three; 1.3 - plastic edge one; 1.3.1 - strip-shaped clamping head two; 1.3.2 - U-shaped part one; 1.3.3 - strip-shaped clamping groove two;

[0028] 2 - sliding door panel; 2.1 - plastic channel two; 2.1.1 - extension plate; 2.1.2 - strip-shaped clamping head three; 2.1.3 - strip-shaped groove two; 2.2 - aluminum alloy profile two; 2.2.1 - edge plate two; 2.2.2 - support plate two; 2.2.3 - hook groove two; 2.2.4 - strip-shaped clamping head four; 2.2.5 - strip-shaped clamping head five; 2.3 - plastic edge two; 2.3.1 - edge plate three; 2.3.2 - U-shaped part two; 2.3.3 - strip-shaped clamping head six; 2.3.4 - strip-shaped protrusion four; 2.3.5 - strip-shaped opening; 2.4 - glass plate; 2.5 - slide housing; 2.6 - sliding block;

[0029] 3 - slide rail assembly; 3.1 - support block; 3.2 - support rail; 3.3 - slide strip. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] Please refer to Figures 1-11The utility model provides a technical scheme: a sliding door assembly based on composite section bar, four sides of composite door frame 1 include plastic channel piece one 1.1, aluminium alloy section bar one 1.2 that is buckled to the front wall of plastic channel piece one 1.1 and plastic edge one 1.3 that is buckled to the outside of plastic channel piece one 1.1 and aluminium alloy section bar one 1.2 respectively, and the front and rear sides of the middle part of the inner side of plastic channel piece one 1.1 are equipped with front groove 1.1.1 and rear groove 1.1.2 respectively, wherein, the rear part of the outer side wall of plastic channel piece one 1.1 is equipped with outer groove 1.1.3, the middle part of the outer side wall of plastic channel piece one 1.1 is equipped with strip-shaped recess one 1.1.6, the outer end of the rear wall of outer groove 1.1.3 is equipped with strip-shaped clamping head one 1.1.4 that protrudes to the front, the middle part of the front wall of outer groove 1.1.3 is equipped with strip-shaped protrusion one 1.1.5, aluminium alloy section bar one 1.2 includes edge board one 1.2.1 and support plate one 1.2.2 that is perpendicular to the middle part of the rear wall of edge board one 1.2.1, the inner side of the rear wall of edge board one 1.2.1 is equipped with hook groove one 1.2.3 that is clamped to the inner side of the front wall of plastic channel piece one 1.1, the inner side wall of support plate one 1.2.2 is equipped with strip-shaped protrusion two 1.2.4 that is clamped and matched with strip-shaped recess one 1.1.6, the outer side wall of support plate one 1.2.2 is equipped with support strip 1.2.5, the position of the rear wall of edge board one 1.2.1 at the outside of support plate one 1.2.2 is equipped with strip-shaped protrusion three 1.2.6, the front end of plastic edge one 1.3 is equipped with strip-shaped clamping head two 1.3.1 that is clamped to the inner side of strip-shaped protrusion three 1.2.6, the rear end of plastic edge one 1.3 is equipped with U-shaped part one 1.3.2 that is buckled and matched with outer groove 1.1.3, the outer end of the rear wall of U-shaped part one 1.3.2 is equipped with strip-shaped clamping groove two 1.3.3 that is clamped and matched with strip-shaped clamping head one 1.1.4, the inner side wall of plastic edge one 1.3 is supported on support strip 1.2.5, and the rear end of support plate one 1.2.2 is clamped to the inner side of strip-shaped protrusion one 1.1.5. The both ends of plastic channel piece one 1.1 and aluminium alloy section bar one 1.2 are equipped with 45 DEG bevel respectively, four plastic channel pieces one 1.1 are first fixedly connected to form basic frame structure, then aluminium alloy section bar one 1.2 is buckled and installed on four plastic channel pieces one 1.1, finally plastic edge one 1.3 is buckled in turn at the outer periphery of frame structure to complete the assembly of composite door frame 1 as a whole, when disassembling, plastic edge one 1.3 is removed first, and then aluminium alloy section bar one 1.2 is removed from plastic channel piece one 1.1 in turn.

[0032] The sliding door panel 2 comprises a glass panel 2.4, plastic channel members 2.1 clamped around the glass panel 2.4, aluminum alloy profiles 2.2 buckled to the front walls of the plastic channel members 2.1, and plastic edge seals 2.3 buckled to the outer sides of the plastic channel members 2.1 and the aluminum alloy profiles 2.2 at both sides. The lower plastic channel members 2.1 and the aluminum alloy profiles 2.2 are jointly clamped with the slide housing 2.5 at the lower side, and the slide housing 2.5 is fixed with the sliding block 2.6 inside. The outer side wall of the plastic channel member 2.1 is provided with an extension plate 2.1.1 at the rear end, the outer end of the extension plate 2.1.1 is provided with a strip-shaped clamping head 2.1.2, and the outer side wall of the plastic channel member 2.1 is provided with a strip-shaped groove 2.1.3 near the middle position. The aluminum alloy profile 2.2 comprises an edge sealing plate 2.2.1 abutting to the front wall of the plastic channel member 2.1 and a support plate 2.2.2 vertically arranged at the middle of the rear wall of the edge sealing plate 2.2.1. The inner end of the edge sealing plate 2.2.1 is provided with a hook groove 2.2.3 clamped with the inner end of the front wall of the plastic channel member 2.1. The inner side of the rear end of the support plate 2.2.2 is provided with a strip-shaped clamping head 2.2.4 matched with the strip-shaped groove 2.1.3. The rear wall of the outer end of the edge sealing plate 2.2.1 is provided with a strip-shaped clamping head 2.2.5. The plastic edge seal 2.3 comprises an edge sealing plate 2.3.1 and a U-shaped part 2.3.2 arranged at the inner side wall of the edge sealing plate 2.3.1 and clamped between the extension plate 2.1.1 and the outer end of the edge sealing plate 2.2.1. The inner side wall of the edge sealing plate 2.3.1 is provided with a strip-shaped clamping head 2.3.3 matched with the strip-shaped clamping head 2.2.5. The rear wall of the U-shaped part 2.3.2 is provided with a strip-shaped protrusion 2.3.4 matched with the strip-shaped clamping head 2.1.2. The plastic channel member 2.1 and the aluminum alloy profile 2.2 are respectively provided with 45° bevels at both ends. Four plastic channel members 2.1 are clamped at the four edges of the glass panel 2.4, and the plastic channel members 2.1 are sequentially fixed and connected at the head and tail to form a basic frame structure. Four aluminum alloy profiles 2.2 are sequentially buckled on the four plastic channel members 2.1. Finally, two plastic edge seals 2.3 are buckled at both sides of the frame structure. Each sliding door panel 2 is provided with two glass panels 2.4 in parallel, and the edges of the two glass panels 2.4 are respectively fixed to the front and rear ends of the inner cavities of the plastic channel members 2.1. The edges of the glass panel 2.4 and the inner cavities of the plastic channel members 2.1 are respectively glued. When the door panel needs to be removed, the plastic edge seals 2.3 at both sides are removed, and then the aluminum alloy profiles 2.2 are removed from the plastic channel members 2.1.In order to facilitate the removal of the plastic edge two 2.3, the edge plate three 2.3.1 is provided with a strip-shaped opening 2.3.5 corresponding to the position of the middle part of the inner cavity of the U-shaped part two 2.3.2, that is, the plastic edge two 2.3 can be pressed forward and backward through the strip-shaped opening 2.3.5, so as to facilitate the pulling out of the U-shaped part two 2.3.2 from between the outer end of the extension plate 2.1.1 and the edge plate two 2.2.1, and in addition, the strip-shaped opening 2.3.5 can also be used for clamping the rubber sealing strip structure.

[0033] The slide rail assembly 3 comprises a support rail 3.2 clamped in the front groove 1.1.1 and the rear groove 1.1.2 of the bottom plastic channel-shaped part one 1.1, and a slide bar 3.3 clamped in the middle part of the top surface of the support rail 3.2 and matched with the sliding clamping of the slide block 2.6. Among them, the inner cavity bottom end of the front groove 1.1.1 and the rear groove 1.1.2 of the bottom plastic channel-shaped part one 1.1 is clamped with a plurality of support blocks 3.1 whose top surfaces are respectively clamped with the bottom end of the support rail 3.2 through the strip-shaped clamping groove one 1.1.7. In order to facilitate the automatic return of the sliding door plate 2 after being opened, a plurality of support blocks 3.1 with different heights can be selected, so that the heights of the support blocks 3.1 decrease in turn in the direction of closing the door.

[0034] In addition, the plastic channel-shaped part one 1.1, the plastic edge one 1.3, the plastic channel-shaped part two 2.1 and the plastic edge two 2.3 are respectively made of one of PVC, ABS, PP, PC and glass fiber extrusion materials.

[0035] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0036] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sliding door assembly based on composite profile, comprising a composite door frame (1), a sliding door panel (2) and a sliding rail assembly (3), characterized in that: the four sides of the composite door frame (1) respectively comprise a plastic channel-shaped part one (1.1), an aluminum alloy profile one (1.2) buckled to the front wall of the plastic channel-shaped part one (1.1), and a plastic edge one (1.3) buckled to the outside of the plastic channel-shaped part one (1.1) and the aluminum alloy profile one (1.2), the front and rear sides of the middle part of the inner side of the plastic channel-shaped part one (1.1) are respectively provided with front and rear grooves (1.1.1) and (1.1.2); the sliding door panel (2) comprises a glass panel (2.4), a plastic channel-shaped part two (2.1) clamped around the glass panel (2.4), an aluminum alloy profile two (2.2) buckled to the front wall of the plastic channel-shaped part two (2.1), and a plastic edge two (2.3) buckled to the outside of the plastic channel-shaped part two (2.1) and the aluminum alloy profile two (2.2) at both sides, the plastic channel-shaped part two (2.1) and the aluminum alloy profile two (2.2) at the bottom are jointly clamped with a sliding seat shell (2.5), and the sliding seat shell (2.5) is fixedly provided with a sliding block (2.6) therein; the sliding rail assembly (3) comprises a support rail (3.2) clamped in the front and rear grooves (1.1.1) and (1.1.2) of the plastic channel-shaped part one (1.1) at the bottom and a sliding bar (3.3) clamped in the middle part of the top surface of the support rail (3.2) and matched with the sliding block (2.6) for sliding clamping.

2. A sliding door assembly based on a composite profile according to claim 1, characterized in that: the rear part of the outer side wall of the plastic channel-shaped part one (1.1) is provided with an outer groove ( 1.1.3), the outer wall of the plastic groove-shaped part (1.1) is provided with a strip groove (1.1.6) in the middle, the rear wall of the outer groove (1.1.3) is provided with a strip head (1.1.4) protruding forward, and the front wall of the outer groove (1.1.3) is provided with a strip protrusion (1.1.5) in the middle, the aluminum alloy profile (1.2) includes an edge sealing plate (1.2.1) and a support plate (1.2.2) perpendicular to the middle of the rear wall of the edge sealing plate (1.2.1), the inner side of the rear wall of the edge sealing plate (1.2.1) is provided with a hook groove (1.2.3) that engages with the inner side of the front wall of the plastic groove-shaped part (1.1), and the inner side wall of the support plate (1.2.2) is provided with a strip protrusion that engages with the strip groove (1.1.6). 1.2.4), the outer wall of the support plate (1.2.2) is provided with a support strip (1.2.5), the rear wall of the edge sealing plate (1.2.1) is provided with a strip-shaped protrusion (1.2.6) located outside the support plate (1.2.2), the front end of the plastic edge sealing plate (1.3) is provided with a strip-shaped clip head (1.3.1) that is engaged with the inner side of the strip-shaped protrusion (1.2.6), the rear end of the plastic edge sealing plate (1.3) is provided with a U-shaped part (1.3.2) that is engaged with the outer groove (1.1.3), the outer end of the rear wall of the U-shaped part (1.3.2) is provided with a strip-shaped groove (1.3.3) that is engaged with the strip-shaped clip head (1.1.4), and the inner wall of the plastic edge sealing plate (1.3) is supported on the support strip (1.2.5).

3. A sliding door assembly based on a composite profile according to claim 1, characterized in that: The outer rear end of the second plastic channel component (2.1) is provided with an extension plate. 2.1.1), the outer front wall of the extension plate (2.1.1) is provided with a strip-shaped clip three ( 2.1.2), the outer wall of the plastic groove-shaped part two (2.1) is provided with a strip-shaped groove two near the middle position. 2.1.3), the aluminum alloy profile two (2.2) comprises a cover plate two (2.2.1) attached to the front wall of the plastic channel two (2.1) and a support plate two (2.2.2) vertically arranged in the middle of the rear wall of the cover plate two (2.2.1), the inner end of the cover plate two (2.2.1) is provided with a hook groove two (2.2.3) for clamping the inner end of the front wall of the plastic channel two (2.1), the inner side of the rear end of the support plate two (2.2.2) is provided with a strip-shaped clamping head four (2.2.4) matched with the strip-shaped groove two (2.1.3), the rear wall of the outer end of the cover plate two (2.2.1) is provided with a strip-shaped clamping head five (2.2.5), the plastic cover two (2.3) comprises a cover plate three (2.3.1) and a U-shaped part two (2.3.2) arranged on the inner side wall of the cover plate three (2.3.1) and clamped between the extension plate (2.1.1) and the outer end of the cover plate two (2.2.1), the inner side wall of the front end of the cover plate three (2.3.1) is provided with a strip-shaped clamping head six (2.3.3) matched with the strip-shaped clamping head five (2.2.5), and the rear wall of the U-shaped part two (2.3.2) is provided with a strip-shaped protrusion four (2.3.4) matched with the strip-shaped clamping head three (2.1.2).

4. A sliding door assembly based on a composite profile according to claim 3, characterized in that: The cover plate three (2.3.1) is provided with a strip-shaped opening (2.3.5) corresponding to the middle of the inner cavity of the U-shaped part two (2.3.2).

5. A composite profile based sliding door assembly as claimed in claim 1, wherein: Each of the sliding door plates (2) is respectively provided with two glass plates (2.4) arranged in parallel, and the edges of the two glass plates (2.4) are respectively fixed to the front and rear ends of the inner cavity of the plastic channel two (2.1).

6. A composite profile based sliding door assembly as claimed in claim 1, wherein: The inner cavities of the front channel (1.1.1) and the rear channel (1.1.2) of the plastic channel one (1.1) at the bottom are respectively provided with a strip-shaped clamping groove one (1.1.7), and a plurality of support blocks (3.1) with top surfaces clamped with the bottom end of the support rail (3.2) are clamped in the strip-shaped clamping groove one (1.1.7).

7. A composite profile based sliding door assembly as claimed in claim 1, wherein: The plastic channel one (1.1), the plastic cover one (1.3), the plastic channel two (2.1) and the plastic cover two (2.3) are respectively made of one of PVC, ABS, PP, PC and glass fiber extrusion materials.

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