Rod profile and application structure thereof

Abstract

The invention belongs to the technical field of building materials, and particularly relates to a rod profile and an application structure thereof. The plurality of interface parts are integrally formed at the periphery of the rod body; the interface part is provided with a box-shaped T-shaped groove with a groove opening back to the rod body; inverted T-shaped grooves are formed in the two side walls, close to the bottom of the box-shaped T-shaped groove, of the box-shaped T-shaped groove; the two side walls, close to a groove opening, of the box-shaped T-shaped groove are provided with inner protruding edges, and the inner protruding edges face the center of the box-shaped T-shaped groove. A V-shaped caulking groove is formed between every two adjacent connector parts. According to the scheme, the connector part of the rod profile adopts the composite structure, so that various accessories can be conveniently connected with the rod profile in different forms, and holes and grooves in the rod profile are reduced; the connecting structure of the rod profile and the accessories can be in a detachable connection mode, so that the accessories can be increased, decreased and installed conveniently, the installation efficiency of the accessories is improved, and recycling and reusing of the accessories and the rod profile are facilitated.

Description

Technical Field

[0001] This invention belongs to the field of building materials technology, specifically relating to a rod profile and its application structure. Background Technology

[0002] Rod profiles are a common type of engineering material, typically referring to straight or rod-shaped materials whose length is much greater than their cross-sectional dimensions. They are widely used in construction, machinery manufacturing, automobiles, and many other fields. Common shapes of rod profiles include round rods, square rods, flat rods, angle steel, channel steel, and hollow rods. Common materials used for rod profiles include steel, aluminum alloys, stainless steel, and plastics.

[0003] When existing pole profiles are manufactured into furniture, they often require the installation of lighting fixtures, panel assembly, and other accessories. Due to their simple structure, the installation of accessories often necessitates extensive drilling and grooving, which can cause significant damage to the pole profile, affecting not only its structural strength but also its reusability. Therefore, it is necessary to design a pole profile and its application structure that facilitates the connection of various accessories. Summary of the Invention

[0004] To address the aforementioned problems in existing technologies, this solution provides a rod profile and its application structure.

[0005] The technical solution adopted in this invention is as follows: A rod profile, comprising: The shaft has a hollow cavity in the middle; Multiple interface sections are integrally formed around the perimeter of the shaft; each interface section has a box-shaped T-shaped groove with the opening facing away from the shaft; inverted T-shaped grooves are provided on the two side walls of the box-shaped T-shaped groove near the bottom of the groove; and inner protruding ridges are provided on the two side walls of the box-shaped T-shaped groove near the opening of the groove, with the inner protruding ridges facing the center of the box-shaped T-shaped groove. A V-shaped groove is formed between adjacent interfaces.

[0006] Optional: The openings of the two inverted T-slots face each other and are perpendicular to the shaft.

[0007] Optionally: The bottom of the box-shaped T-groove is provided with a bottom hole that connects to the hollow cavity, and a number of bottom holes are arranged along the length of the rod.

[0008] Optional: The number of interface sections is three, four, or five; the interface sections are evenly or irregularly distributed around the shaft.

[0009] An application structure for a rod profile includes a rod profile and accessories that mate with the rod profile; The accessory is a decorative cover that fits over the opening of the box-shaped T-slot. Or / and, the accessory is a decorative cover that covers the fitting groove; Or / and, the accessory is a plate whose edge is embedded in the groove; Or / and, the accessory is a fixing bracket that assists in the installation of the rod profile on the vertical surface of the mounting carrier; Or / and, the accessory is a shelf with a flat surface for placing items; Or / and, the accessory is a hook.

[0010] Optional: The decorative cover is connected to the outside of the interface, and the side of the decorative cover away from the rod profile is convex arc-shaped; the opening of the decorative cover is provided with a first side buckle that protrudes outward, and the first side buckle is engaged with the inner convex ridge; When no light fixture is installed in the box-shaped T-groove, the decorative cover is made of light-transmitting or non-light-transmitting material; When a lamp is installed in the box-shaped T-groove, the decorative cover is made of a light-transmitting material, the lamp is installed at the bottom of the box-shaped T-groove, and a conductive strip for powering the lamp is installed in the inverted T-groove.

[0011] Optionally: The decorative cover is arc-shaped and covers the groove. Both sides of the decorative cover in the width direction are connected to two adjacent interface parts respectively. Both sides of the decorative cover in the width direction are provided with a second side buckle, which is snapped onto the inner protruding ridge of the interface part adjacent to the decorative cover.

[0012] Optionally: The fixing buckle is fixed on the vertical surface of the mounting carrier, and is connected to two adjacent interface parts of the rod profile on opposite sides of the fixing buckle; a third side buckle is provided on opposite sides of the fixing buckle, and the third side buckle is snapped into the inner protruding ridge on the side of the interface part adjacent to the fixing buckle; an abutment is also provided on the fixing buckle, and the abutment abuts against the outer wall of the interface part from the groove. The shelf is horizontally arranged, and one end of the shelf is provided with a fourth side buckle and a fifth side buckle. The fourth side buckle and the fifth side buckle are respectively connected to two adjacent interface parts of the rod profile. The structure of the fourth side buckle is the same as that of the third side buckle. The fifth side buckle is T-shaped, with one end of the fifth side buckle snapping into one side of the interface part and the other end abutting against the other side of the interface part. Optional: The handle end of the hook has an installation handle portion, on which an L-shaped groove and a clearance groove are provided; an L-shaped hook portion is formed between the opening of the box-shaped T-shaped groove and the inverted T-shaped groove; the L-shaped hook portion engages with the L-shaped groove, and the clearance groove engages with the inner convex ridge.

[0013] Optional: Multiple rod profiles and multiple multi-directional connectors are spliced ​​together to form a frame structure; panels are installed on the frame structure to form a cabinet structure; Multi-directional connectors are used for connecting rod profiles; a support plate seat and a hinge seat are installed at the interface of the rod profile; the side hook on the side of the support plate seat is hooked to the bottom hole of the box-shaped T-slot, and the mounting part of the hinge seat is connected to the interface of the rod profile. The material includes a fixed plate, a door panel, and a cross panel; multiple fixed plates are installed on corresponding surfaces of the frame structure, with their edges embedded in the grooves of the rod profile; the door panel is connected to a hinge seat via a hinge, and when the door panel is closed, its edge is embedded in the groove of the rod profile; the edge of the cross panel is supported by a support plate seat.

[0014] The beneficial effects of this invention are as follows: The interface of the rod profile in this solution adopts a composite structure, which can facilitate the connection of various accessories with the rod profile in different forms, thereby reducing the number of holes and slots on the rod profile; the connection structure between the rod profile and the accessories can be a detachable connection, which facilitates the addition, removal and installation of accessories, not only improving the installation efficiency of accessories, but also facilitating the recycling and reuse of accessories and rod profiles. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this scheme or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a cross-sectional structural diagram of the rod profile; Figure 2 This is an enlarged view of the interface section; Figure 3 It is a structural diagram showing the fit between the rod profile and the decorative cover; Figure 4 It is a structural diagram showing the fit between the rod profile and the decorative cover; Figure 5 It is a structural diagram of the fit between the rod profile and the plate; Figure 6 It is a structural diagram showing the fit between the rod profile, shelf, hook, and fixing bracket; Figure 7 yes Figure 6 Structural diagram of part A in the middle; Figure 8 yes Figure 6 Structural diagram of part B in the middle; Figure 9 This is a structural diagram of a cabinet using rod-shaped profiles; Figure 10 This is a structural diagram of the tray base; Figure 11 This is a partial view of the hinge seat; Figure 12 This is a structural diagram of a three-way connector; Figure 13This is a structural diagram of a four-way connector; Figure 14 This is a structural diagram of a five-way connector.

[0017] In the diagram: 1-Ring profile; 101-Mouth; 102-Interface; 1021-Bottom hole; 1022-Inverted T-groove; 1023-Box-shaped T-groove; 1024-Inner protruding ridge; 1025-L-shaped hook; 103-Hollow cavity; 2-Conductive strip; 3-Decorative cover; 31-First side buckle; 31-Interface; 4-Decorative cover; 41-Second side buckle; 5-Fixing buckle seat; 51-Third side buckle; 52-Abutment ridge; 6 - Mounting carrier; 7- Shelf; 71- Fourth side buckle; 72- Fifth side buckle; 8- Hook; 81- Mounting handle; 82- L-shaped groove; 83- Clearance groove; 9- Panel; 91- Door leaf panel; 92- Horizontal partition; 93- Fixing plate; 10- Three-way connector; 11- Support plate seat; 111- Side hook; 12- Hinge seat; 121- Mounting part; 13- Hinge; 14- Five-way connector; 15- Four-way connector. Detailed Implementation

[0018] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this solution without creative effort are within the protection scope of this solution.

[0019] Example 1 like Figures 1 to 2 As shown, this embodiment designs a rod profile 1, including a rod body and an interface portion 102.

[0020] The shaft has a hollow structure and is long and narrow, with a hollow cavity 103 in the middle of the shaft.

[0021] The shaft has multiple interface portions 102 around its perimeter, with the number of interface portions 102 being three, four, or five. The interface portions 102 are integrally formed around the shaft, with their bases connected to the shaft and their connecting ends extending beyond the shaft. The interface portions 102 on the outer side of the shaft can be evenly spaced (uniformly distributed), resulting in a polygonal star-shaped cross-section for the shaft profile 1. Alternatively, the interface portions 102 on the outer side of the shaft can be irregularly distributed, with varying intervals between different interface portions 102. The interface portion 102 has a box-shaped T-slot 1023 with its opening facing away from the shaft. The box-shaped T-slot 1023 is a T-shaped slot with a wide opening and a narrow bottom. Inverted T-shaped slots 1022 are provided on the two side walls of the box-shaped T-slot 1023 near the bottom. The inverted T-shaped slots 1022 are T-shaped slots with a narrow opening and a wide bottom. The openings of the two inverted T-shaped slots 1022 face each other and are perpendicular to the shaft. Inner protruding ribs 1024 are provided on the two side walls of the box-shaped T-slot 1023 near the opening. The inner protruding ribs 1024 face the center of the box-shaped T-slot 1023, thus making the opening of the box-shaped T-slot 1023 a constricted structure.

[0022] The interface section 102 can form a variety of connection structures through the box-shaped T-groove 1023, the inverted T-groove 1022 and the inner protruding ridge 1024.

[0023] The first type of connection structure: a notch can be formed on the side of the inner convex rib 1024 that is close to the bottom of the groove. The first type of connection structure is formed by using the notches on both sides of the same interface part 102 and the inner convex rib 1024.

[0024] The second connection structure: two inverted T-shaped grooves 1022, which can connect different accessories respectively, so that each inverted T-shaped groove 1022 can form the second connection structure.

[0025] The third connection structure: two inverted T-shaped grooves 1022 can be used to connect the same accessory, so that the two inverted T-shaped grooves 1022 can be combined to form the third connection structure.

[0026] The fourth connection structure: combining the notch on one side of one interface portion 102 with the notch on the opposite side of the adjacent interface portion 102 to form the fourth connection structure, and connecting it to the same accessory.

[0027] The fifth connection structure is formed by combining the notch on one side of an interface portion 102 with the L-shaped hook portion 1025 formed between the inverted T-shaped groove 1022 and the notch.

[0028] The sixth connection structure: A V-shaped groove 101 is formed between adjacent interface portions 102. The groove 101 can be used for embedding the plate 9, thereby forming the sixth connection structure.

[0029] The seventh connection structure: The bottom of the box-shaped T-groove 1023 is provided with a bottom hole 1021 that connects to the hollow cavity 103. Several bottom holes 1021 are arranged along the length of the rod, so that the bottom holes 1021 serve as the seventh connection structure for hanging other accessories.

[0030] The eighth connection structure: The hollow cavity 103 in the middle of the pole can not only be used for the insertion of multi-directional connectors, but also for the routing of cables and the placement of other accessories, thus making the hollow cavity 103 form the eighth connection structure.

[0031] In this embodiment, the interface 102 of the rod profile 1 adopts a composite structure, which facilitates the connection of various accessories with the rod profile 1 in different forms, thereby reducing the number of openings and slots on the rod profile 1. The connection structure between the rod profile 1 and the accessories can be a detachable connection, which facilitates the addition, removal and installation of accessories, not only improving the installation efficiency of accessories, but also facilitating the recycling and reuse of accessories and rod profile 1.

[0032] Example 2 like Figures 1 to 14 As shown, this embodiment designs an application structure for a rod profile 1, including the rod profile 1 described in Embodiment 1, and various accessories that cooperate with the rod profile 1. One or more accessories can be installed on the rod profile 1. When installing multiple accessories, multiple identical accessories or multiple different accessories can be used.

[0033] like Figure 3 As shown, the accessory for mounting the rod profile 1 can be a decorative cover 3. The decorative cover 3 covers the opening of the box-shaped T-slot 1023, and can be installed at multiple interfaces 31 of the rod profile 1. The decorative cover 3 is connected to the outside of the interface portion 102, and the side of the decorative cover 3 away from the rod profile 1 is convex arc-shaped; the opening of the decorative cover 3 is provided with an outwardly protruding first side buckle 31, which is snapped into the inner convex ridge 1024. The decorative cover 3 can be connected to the first connection structure of the rod profile 1.

[0034] When no light fixture is installed in the box-shaped T-slot 1023, the decorative cover 3 is made of a light-transmitting or non-light-transmitting material; when a light fixture is installed in the box-shaped T-slot 1023, the decorative cover 3 is made of a light-transmitting material, the light fixture is installed at the bottom of the box-shaped T-slot 1023, and a conductive strip 2 for supplying power to the light fixture is installed in the inverted T-slot 1022. The light fixture can be connected to the rod profile 1 via screws using the seventh connection structure.

[0035] like Figure 4As shown, the accessory installed on the rod profile 1 can be a decorative cover 4. The decorative cover 4 is arc-shaped and covers the groove 101. Both sides of the decorative cover 4 in the width direction are connected to two adjacent interface portions 102. A second side buckle 41 is provided on both sides of the decorative cover 4 in the width direction, and the second side buckle 41 is snapped onto the inner protruding ridge 1024 of the interface portion 102 adjacent to the decorative cover 4. One decorative cover 4 can be provided in each groove 101 of the rod profile 1, so that the decorative cover 4 and the rod profile 1 can form a cylindrical structure, improving aesthetics. The decorative cover 4 is connected to the rod profile 1 via a fourth connection structure.

[0036] like Figure 5 As shown, the accessory for mounting the rod profile 1 can be a plate 9. The edge of the plate 9 is embedded in the groove 101, and then the two are fixed by screws, so that the plate 9 is connected to the seventh connection structure of the rod profile 1.

[0037] like Figure 6-8 As shown, the accessory for installing the rod profile 1 can be a fixing seat 5, which is fixed to the vertical surface of the mounting carrier 6 by screws. The mounting carrier 6 can be a wall or a panel 9. The fixing seat 5 assists in the installation of the rod profile 1 on the mounting carrier 6. The fixing seat 5 is fixed to the vertical surface of the mounting carrier 6, and is connected to two adjacent interface portions 102 of the rod profile 1 on opposite sides. A third side buckle 51 is provided on opposite sides of the fixing seat 5, and the third side buckle 51 is snapped into the inner protruding rib 1024 on the side of the interface portion 102 adjacent to the fixing seat 5. An abutment rib 52 is also provided on the fixing seat 5, which abuts against the outer wall of the interface portion 102 from the groove 101. The fixing seat 5 can be connected to a fourth connection structure of the rod profile 1.

[0038] like Figure 6-8 As shown, the accessory installed on the rod profile 1 can be a shelf 7, which is horizontally positioned to provide a flat surface for placing items. A fourth side buckle 71 and a fifth side buckle 72 are provided on the lower surface of one end of the shelf 7. The fourth side buckle 71 and the fifth side buckle 72 are respectively connected to two adjacent interface portions 102 of the rod profile 1. The structure of the fourth side buckle 71 is the same as that of the third side buckle 51. The fifth side buckle 72 is T-shaped, with one end engaging with one side of the interface portion 102 and the other end abutting against the other side of the interface portion 102. The shelf 7 can also be connected to a fourth connection structure of the rod profile 1.

[0039] like Figure 6-8As shown, the accessory can be a hook 8. The handle end of the hook 8 has a mounting handle portion 81, on which an L-shaped groove 82 and a clearance groove 83 are provided; an L-shaped hook portion 1025 is formed between the opening of the box-shaped T-shaped groove 1023 and the inverted T-shaped groove 1022; the L-shaped hook portion 1025 engages with the L-shaped groove 82, and the clearance groove 83 engages with the inner protruding ridge 1024. The hook 8 can be connected to the fifth connection structure of the rod profile 1.

[0040] like Figure 9-14 As shown, a frame structure can be formed by splicing multiple rod profiles 1 with multiple multi-directional connectors. The multi-directional connectors can be five-directional connectors 14, four-directional connectors 15, or three-directional connectors 10. Three-directional connectors 10 are used to connect three mutually perpendicular rod profiles 1. Four-directional connectors 15 are used to connect four rod profiles 1, with two of the four rod profiles 1 lying on the same straight line. Five-directional connectors 14 are used to connect five rod profiles 1, with two of the five rod profiles 1 lying on the same horizontal straight line, and two more of the five rod profiles 1 lying on the same vertical straight line. The multi-directional connectors are engaged with the rod profiles 1 in an eighth connection structure.

[0041] like Figure 9 As shown, installing panels 9 on a frame structure can form a cabinet structure; the panels 9 include fixing plates 93, door panels 91, and horizontal partitions 92. Multiple fixing plates 93 are installed on corresponding surfaces of the frame structure, with their edges embedded in the grooves 101 of the rod profiles 1; when the door panels 91 are closed, their edges are also embedded in the grooves 101 of the rod profiles 1; after the horizontal partitions 92 are installed, their edges are also embedded in the grooves 101 of the rod profiles 1. This allows the fixing plates 93, door panels 91, and horizontal partitions 92 to be connected to the sixth connection structure of the rod profiles 1, and then fixed using screws or glue. Adjustable feet that can be freely adjusted in height can be installed at the bottom of the cabinet structure.

[0042] like Figure 9 and Figure 10 As shown, a support plate 11 can be installed at the interface 102 of the rod profile 1. The side hook 111 on the side of the support plate 11 is hooked into the bottom hole 1021 of the box-shaped T-slot 1023, so that the support plate 11 is connected to the seventh connection structure of the rod profile 1. Then, the cross partition 92 is placed on the support plate 11, so that the cross partition 92 is supported by multiple support plates 11. like Figure 9 and Figure 11As shown, a hinge seat 12 can be installed at the interface 102 of the rod profile 1. The side of the hinge seat 12 has a mounting portion 121, which is connected to the first connection structure of the interface 102 of the rod profile 1. Then, screws are used to fix it through the mounting portion 121 and the bottom of the box-shaped T-slot 1023 of the rod profile 1. The door panel 91 can be connected to the hinge seat 12 via a hinge 13 to realize the installation of the door panel 91. Since the hinge is installed through the hinge seat 1, it is convenient to move the hinge seat and the hinge according to actual needs, thereby facilitating the installation of the door panel.

[0043] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation; it is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the scope of this technology.

Claims

1. A rod profile, characterized in that: include: The shaft has a hollow cavity (103) in the middle. Multiple interface portions (102) are integrally formed around the perimeter of the shaft; each interface portion (102) has a box-shaped T-groove (1023) with its opening facing away from the shaft; inverted T-grooves (1022) are provided on the two side walls of the box-shaped T-groove (1023) near the bottom of the groove; and inner protruding ribs (1024) are provided on the two side walls of the box-shaped T-groove (1023) near the opening of the groove, with the inner protruding ribs (1024) facing the center of the box-shaped T-groove (1023); A V-shaped groove (101) is formed between adjacent interface portions (102).

2. The rod profile according to claim 1, characterized in that: The openings of the two inverted T-shaped grooves (1022) face each other and are perpendicular to the shaft.

3. The rod profile according to claim 1, characterized in that: The bottom of the box-shaped T-groove (1023) is provided with a bottom hole (1021) that connects to the hollow cavity (103), and a number of bottom holes (1021) are arranged along the length of the rod.

4. The rod profile according to claim 1, characterized in that: The number of interface parts (102) is three, four or five; the interface parts (102) are evenly or irregularly distributed around the shaft.

5. An application structure for a rod profile, characterized in that: Includes the rod profile (1) as described in any one of claims 1-4 and accessories that mate with the rod profile (1); The accessory is a decorative cover (3) that covers the opening of the box-shaped T-slot (1023); Or / and, the accessory is a decorative cover (4) covering the groove (101); Or / and, the accessory is a plate (9) whose edge is embedded in the groove (101); Or / and, the accessory is a fixing buckle (5) that assists in the installation of the rod profile (1) on the vertical surface of the mounting carrier (6); Or / and, the accessory is a shelf (7) with a flat surface for placing items; Or / and, the accessory is a hook (8).

6. The application structure of the rod profile according to claim 5, characterized in that: The decorative cover (3) is connected to the outside of the interface (102), and the side of the decorative cover (3) away from the rod profile (1) is convex arc-shaped; the opening of the decorative cover (3) is provided with a first side buckle (31) protruding outward, and the first side buckle (31) is engaged with the inner convex ridge (1024). When no lamp is installed in the box-shaped T-groove (1023), the decorative cover (3) is made of light-transmitting or non-light-transmitting material; When a lamp is installed in the box-shaped T-groove (1023), the decorative cover (3) is made of light-transmitting material, the lamp is installed at the bottom of the box-shaped T-groove (1023), and a conductive strip (2) for powering the lamp is installed in the inverted T-groove (1022).

7. The application structure of the rod profile according to claim 5, characterized in that: The decorative cover (4) is arc-shaped and covers the groove (101). The two sides of the decorative cover (4) in the width direction are connected to two adjacent interface parts (102) respectively. The two sides of the decorative cover (4) in the width direction are provided with a second side buckle (41). The second side buckle (41) is snapped to the inner protruding ridge (1024) on the side of the interface part (102) adjacent to the decorative cover (4).

8. The application structure of the rod profile according to claim 5, characterized in that: The fixing seat (5) is fixed on the vertical surface of the mounting carrier (6), and the fixing seat (5) is connected to two adjacent interface parts (102) of the rod profile (1) on opposite sides respectively; a third side buckle (51) is provided on opposite sides of the fixing seat (5), and the third side buckle (51) is snapped into the inner protruding ridge (1024) on the side of the interface part (102) adjacent to the fixing seat (5); an abutment ridge (52) is also provided on the fixing seat (5), and the abutment ridge (52) abuts against the outer wall of the interface part (102) from the groove (101); The shelf (7) is horizontally arranged, and a fourth side buckle (71) and a fifth side buckle (72) are provided at one end of the shelf (7). The fourth side buckle (71) and the fifth side buckle (72) are respectively connected to two adjacent interface parts (102) of the rod profile (1). The structure of the fourth side buckle (71) is the same as that of the third side buckle (51). The fifth side buckle (72) is T-shaped. One end of the fifth side buckle (72) is engaged with one side of the interface part (102), and the other end is abutted against the other side of the interface part (102).

9. The rod profile according to claim 5, characterized in that: The hook (8) has a mounting handle (81) at the end of the handle, and an L-shaped groove (82) and a clearance groove (83) are provided on the mounting handle (81); an L-shaped hook (1025) is formed between the opening of the box-shaped T-shaped groove (1023) and the inverted T-shaped groove (1022); the L-shaped hook (1025) engages with the L-shaped groove (82), and the clearance groove (83) engages with the inner convex ridge (1024).

10. The application structure of the rod profile according to claim 5, characterized in that: Multiple rod profiles (1) are spliced ​​with multiple multi-directional connectors to form a frame structure; plates (9) are installed on the frame structure to form a cabinet structure; A multi-directional connector is used for connecting rod profiles (1); a support plate seat (11) and a hinge seat (12) are installed at the interface (102) of the rod profile (1); the side hook (111) at the side of the support plate seat (11) is hung at the bottom hole (1021) of the bottom of the box-shaped T-slot (1023); the mounting part (121) of the hinge seat (12) is connected to the interface (102) of the rod profile (1); The plate (9) includes a fixing plate (93), a door panel (91) and a cross panel (92); multiple fixing plates (93) are installed on the corresponding surfaces of the frame structure and their edges are embedded in the grooves (101) of the rod profile (1); the door panel (91) is connected to the hinge seat (12) via a hinge (13), and when the door panel (91) is closed, the edge of the door panel (91) is embedded in the grooves (101) of the rod profile (1); the edge of the cross panel (92) is supported by a support plate seat (11).

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