Anti-condensation broken bridge structure and door leaf

Abstract

The present application relates to an anti-condensation thermal insulation structure and door leaf, and to the technical field of doors and windows, including a thermal insulation piece, a first connecting piece is provided on one side of the thermal insulation piece, a second connecting piece is provided in the middle of the thermal insulation piece and faces the opposite direction to the first connecting piece, a fixing piece is provided on the other side of the thermal insulation piece, the first connecting piece, the second connecting piece and the fixing piece are all separated by the thermal insulation piece, a screw is provided on the thermal insulation piece that passes through the first connecting piece, the second connecting piece and the fixing piece at the same time, and the screw is threadedly connected to the first connecting piece and the fixing piece, and an insulating sealing sleeve is provided between the screw and the second connecting piece to separate and connect the two. The present application has the effect of realizing thermal insulation of the connection structure, reducing condensation at the bridge, and extending the life of the product.

Description

Technical Field

[0001] The present application relates to the field of doors and windows, and in particular to an anti-condensation thermal insulation structure and a door leaf. Background Art

[0002] In recent years, energy-saving and comfortable buildings have been increasingly sought after by people. In the process of pursuing energy-saving and comfortable buildings, the technical requirements for building envelope components have become increasingly stringent, especially for the doors of the building envelope, doors in areas with large temperature differences in buildings, entrance doors and other products. The airtightness and thermal insulation performance requirements are becoming more and more stringent. The improvement of the airtightness and thermal insulation performance of doors is of great help to improve building energy consumption and people's living comfort.

[0003] However, since the door leaves or door frames are not insulated against the hot and cold temperature differences during the assembly and welding process during the door product manufacturing process, condensation will occur at the joints between the door frames and door leaves or at the door leaf assembly bridges in parts or areas with large temperature differences in the building, causing door body contamination, mildew, moisture and rust, reducing product life and affecting building performance. Summary of the invention

[0004] The purpose of this application is to provide an anti-condensation thermal insulation structure and door leaf, which are used to achieve thermal insulation thermal insulation of the connecting structure, reduce condensation at the connecting bridge, and extend the product life.

[0005] In the first aspect, the anti-condensation broken bridge structure provided by the present application adopts the following technical solution:

[0006] A condensation-proof thermal insulation structure comprises a thermal insulation component, wherein a first connecting component is provided on one side of the thermal insulation component, a second connecting component is provided in the middle of the thermal insulation component and is opposite to the first connecting component, a fixing component is provided on the other side of the thermal insulation component, the first connecting component, the second connecting component and the fixing component are all separated by the thermal insulation component, a screw passing through the first connecting component, the second connecting component and the fixing component at the same time is passed through the thermal insulation component, and the screw is threadedly connected to the first connecting component and the fixing component, and an insulating sealing sleeve is provided between the screw and the second connecting component to separate and connect the two.

[0007] By adopting the above technical solution, the first connecting member and the second connecting member are respectively fixedly connected to different objects, so that the two objects are connected, wherein the thermal insulation member separates the first connecting member and the second connecting member, thereby blocking the heat conduction between the first connecting member and the second connecting member, wherein the screws reinforce the first connecting member, the second connecting member and the thermal insulation member through the fixing members, and the screws are connected to the second connecting member through the thermal insulation sealing sleeve, thereby blocking the heat conduction between the screws and the second connecting member, reducing the heat conduction between the first connecting member and the second connecting member through the screws, thereby forming a structure that blocks heat conduction between the two objects, reducing the possibility of condensation at the connecting bridge, extending the product life, and improving the building performance.

[0008] Optionally, the fixing member is configured as a steel plate.

[0009] By adopting the above technical solution, the first connecting member can conduct heat to the steel plate through the screws, and the thermal insulation member wraps the steel plate, so that the heat on the steel plate is blocked, thereby further improving the heat conduction and the barrier effect.

[0010] In the second aspect, the present application provides a door leaf adopting the following technical solution:

[0011] A door leaf comprises an inner door panel and an outer door panel, wherein the inner door panel and the outer door panel are provided with thermal insulation components in the direction where they approach each other, and the two thermal insulation components are connected by a second connecting component, and the inner door panel, the outer door panel and the second connecting component are all connected with a blocking block.

[0012] By adopting the above technical solution, two thermal insulation components and a barrier block are arranged between the inner panel of the door leaf and the outer panel of the door leaf, thereby forming a multi-layer barrier, so that the heat conduction between the inner panel of the door leaf and the outer panel of the door leaf is blocked, thereby further reducing the possibility of condensation at the connection between the inner panel of the door leaf and the outer panel of the door leaf.

[0013] Optionally, the interior of the barrier block is configured to be hollow, and a reinforcing column is further provided inside the barrier block, with two ends of the reinforcing column facing an inner panel and an outer panel of a door leaf respectively.

[0014] By adopting the above technical solution, the interior of the barrier block is hollow, so that there is air inside, which reduces the thermal conductivity coefficient and further blocks heat conduction. In addition, the reinforcing columns inside the barrier block provide support for the barrier block, making the barrier block not easy to deform. At the same time, the anti-condensation broken bridge structure on both sides of the barrier block is supported, reducing the possibility of deformation of the door leaf outer panel and the door leaf inner panel due to approaching or moving away.

[0015] Optionally, a supporting lining is provided on the side where the inner panel of the door leaf and the outer panel of the door leaf are close to each other, and a sound-absorbing layer is provided between the two supporting linings. The sound-absorbing layer includes multiple rows of supporting tubes. The supporting tubes in the same row are flush, and the two adjacent rows of supporting tubes are staggered. The sound-absorbing layer is wavy, and the two ends of the supporting tubes are respectively abutted against the side walls of the two supporting liners, and the thermal insulation components are provided on both sides of the supporting liners.

[0016] By adopting the above technical solution, multiple rows of supporting tubes make the sound-absorbing layer into a honeycomb structure. The supporting tubes with the honeycomb structure can play a good sound-absorbing role between the two supporting liners. At the same time, the sound-absorbing layer is arranged in a wave shape as a whole, which can further improve the sound absorption effect. In addition, the supporting tubes support the supporting liners on both sides thereof to improve the overall stability of the door leaf.

[0017] Optionally, a cavity is provided inside the support lining, and a support assembly is provided in the cavity, the support assembly includes a support plate arranged in the cavity, a buffer column on the side of the support plate away from the sound absorbing layer, one end of the buffer column away from the support plate is fixed to the inner wall of the support lining, and the other side of the support plate is fixedly connected with two drive rods, the ends of the two drive rods away from the support plate are gradually inclined toward each other, and a support rod is penetrated and slidably connected at one end of the drive rod away from the support plate, the support rod is parallel to the support plate and is slidably connected to the support lining, and a buffer spring connecting the two support rods is provided between the two support rods.

[0018] By adopting the above technical solution, the interior of the support lining is set as a cavity, so that the support lining can have a heat insulating effect, and the support assembly inside the support lining can support the support lining. When the door leaf is deformed by impact, the outer panel or the inner panel of the door leaf squeezes the support lining and the buffer column at the same time. The buffer column presses the support plate to make the support plate slide in the cavity, and the driving rod drives the support rod to move. At this time, the buffer spring and the buffer column are deformed, thereby reducing the impact and maintaining support for the support lining, thereby improving the stability of the door leaf.

[0019] Optionally, one end of the support rod away from the buffer spring passes through the support lining, the end of the support rod passing through the support lining is clamped with the blocking block, and the end of the blocking block away from the support rod is clamped with the thermal insulation component.

[0020] By adopting the above technical solution, when the support plate moves toward the direction close to the sound-absorbing layer, the support rod moves toward the outside of the supporting lining and applies a pulling force to the barrier block. The barrier block provides supporting force to the supporting lining through the anti-condensation broken bridge structure, thereby maintaining the overall stability of the interior of the door leaf.

[0021] Optionally, a limit block is provided on a side of the first connecting member away from the second connecting member, and both the door leaf inner plate and the door leaf outer plate are provided with limit grooves corresponding to the limit block, and the limit block is inserted into the limit groove.

[0022] By adopting the above technical solution, when the blocking block is subjected to thrust, the first connecting member applies thrust to the door panel or the inner panel of the door leaf, thereby reducing the deformation degree of the door leaf and further improving the supporting and protecting effect.

[0023] Optionally, a flame retardant layer is provided between the inner panel of the door leaf and the outer panel of the door leaf and the supporting lining, and the flame retardant layer includes a plurality of evenly distributed flame retardant pads, and the inner panel of the door leaf and the outer panel of the door leaf are connected to the supporting lining via the flame retardant pads.

[0024] By adopting the above technical solution, the inner panel and the outer panel of the door leaf are separated from the supporting lining by the flame retardant pad, so that the high temperature will not directly touch the supporting lining, thereby slowing down and blocking the heat conduction, thereby protecting the supporting lining and reducing the possibility of combustion.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The anti-condensation broken bridge structure blocks heat conduction, making it difficult for condensation to form on the two objects connected by the anti-condensation broken bridge structure, thereby reducing the possibility of mold and corrosion and extending the service life;

[0027] 2. The sound-absorbing layer can give the door leaf a good sound-absorbing effect. At the same time, the sound-absorbing layer can improve the supporting capacity inside the door leaf, thereby improving the supporting performance of the door leaf;

[0028] 3. The support assembly improves the impact resistance of the door leaf, thereby improving the stability and safety of the door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0030] Figure 2 It is a schematic diagram of the overall structure of Example 2 of the present application;

[0031] Figure 3 It is a schematic diagram of the overall structure of Example 3 of the present application;

[0032] In the figure, 1, thermal insulation member; 11, first receiving groove; 12, second receiving groove; 13, third receiving groove; 14, clamping groove; 15, airbag; 2, first connecting member; 21, straight plate; 211, positioning plate; 212, limit block; 22, U-shaped plate; 3, second connecting member; 31, thermal insulation sealing sleeve; 4, fixing member; 41, steel plate; 5, screw; 6, door panel; 61, fireproof insulation board; 62, door leaf inner panel; 63, Door leaf outer panel; 64, first bolt; 7, door frame; 71, calcium silicate fireproof board; 72, first lining plate; 73, second lining plate; 74, self-tapping screws; 8, barrier block; 81, reinforcement column; 9, support lining; 91, support assembly; 911, support plate; 912, buffer column; 913, drive rod; 914, buffer spring; 915, support rod; 92, flame retardant pad; 93, sound absorbing layer; 931, support tube; 10, limit groove. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 -Attached Figure 2 , further details of this application are given.

[0034] Embodiment 1: A condensation-proof broken bridge structure, referring to Figure 1 , including a thermal insulation member 1, which is made of hard PVC material. A first accommodating groove 11 is provided on one side of the thermal insulation member 1, and a first connecting member 2 is provided in the first accommodating groove 11. The first connecting member 2 includes a U-shaped plate 22 and a straight plate 21. The side wall of one side of the U-shaped plate 22 abuts against the side wall of the first accommodating groove 11, and the end of the other side is fixedly connected to one end of the straight plate 21. The first connecting member 2 is L-shaped as a whole, and the straight plate 21 abuts against the side wall of the thermal insulation member 1 at the same time.

[0035] A second accommodating groove 12 is provided on the side of the thermal insulation component 1 away from the straight plate 21, and a second connecting member 3 is inserted into the second accommodating groove 12. The second connecting member 3 is L-shaped, and one end of the second connecting member 3 away from the straight plate 21 abuts against the side wall of the thermal insulation component 1 and is arranged parallel to the straight plate 21.

[0036] A third accommodating groove 13 is provided on a side of the thermal insulation component 1 away from the first accommodating groove 11 . A fixing component 4 is inserted into the third accommodating groove 13 . The fixing component 4 is a steel plate 41 .

[0037] A screw 5 is passed through the thermal insulation component 1, and the screw 5 passes through the U-shaped plate 22, the second connecting component 3 and the fixing component 4 in sequence, and the screw 5 is threadedly connected to the U-shaped plate 22 and the fixing component 4. A fixing hole is opened on the second connecting component 3, and the diameter of the fixing hole is larger than the diameter of the screw 5. An insulating sealing sleeve 31 is also fixedly connected in the fixing hole. The screw passes through the insulating sealing sleeve 31 and is threadedly connected to the insulating sealing sleeve 31.

[0038] The U-shaped plate 22 can provide a buffer margin for the fixation of the screw 5 by deforming, so that the screw 5 can fix the first connecting member 2, the second connecting member 3 and the fixing member 4 to the thermal insulation member 1 under a certain error condition.

[0039] The implementation principle of Example 1 of the present application is: the first connecting member 2 and the second connecting member 3 are separated by the thermal insulation member 1, and the screw 5 is connected to the second connecting member 3 through the thermal insulation sleeve 31, so that the first connecting member 2 and the second connecting member 3 form a structure that blocks heat conduction.

[0040] Example 2: Reference Figure 1 and Figure 2 A door leaf includes a door panel 6, the door panel 6 includes a fireproof insulation board 61, and the two sides of the fireproof insulation board 61 are respectively abutted with a door leaf outer board 63 and a door leaf inner board 62. A door frame 7 is provided at one end of the door panel 6, and a calcium silicate fireproof board 71 is installed on the outer side of the door frame 7. A first lining board 72 and a second lining board 73 are respectively provided at both ends of the door frame 7. The first lining board 72 and the second lining board 73 are fixedly connected to the door frame 7 by self-tapping screws 74 on the side away from the door panel 6.

[0041] A first bolt 64 connecting the door frame 7 and the first lining plate 72 is provided on one side of the first lining plate 7 close to the door frame 7, and a self-tapping screw 74 connecting the door frame 7 and the second lining plate 73 is also provided on one side of the second lining plate 73 close to the door panel 6. The above-mentioned anti-condensation thermal bridge structure is installed between the second lining plate 73 and the door panel 6, and the anti-condensation thermal bridge structure simultaneously connects the door leaf outer panel 63 and the door leaf inner panel 62.

[0042] Two anti-condensation broken bridge structures are provided, and they correspond to the inner plate 62 and the outer plate 63 of the door leaf respectively. The first connector 2 of one anti-condensation broken bridge structure is fixedly connected to the inner plate 62 of the door leaf, the broken bridge heat insulation component 1 is fixed to the fireproof heat insulation board 61 by screws 5, the second connector 3 is fixedly connected to the first connector 2 of another anti-condensation broken bridge structure, the broken bridge heat insulation component 1 of another anti-condensation broken bridge structure is fixed to the fireproof heat insulation board 61 by screws 5, the second connector 3 is fixedly connected to the outer plate 63 of the door leaf, and the second lining plate 73 is fixedly connected to the second connector 3 of another anti-condensation broken bridge structure. Thus, the heat transfer between the outer plate 63 of the door leaf and the inner plate 62 of the door leaf is blocked.

[0043] In addition, a snap-in groove 14 is provided on the thermal insulation component 1, and an airbag 15 is provided on one side of the thermal insulation component 1. One end of the airbag 15 is snap-fitted into the snap-in groove 14. When the airbag 15 is inflated, the airbag 15 separates the gap between the second lining plate 73 and the anti-condensation thermal insulation structure, thereby enhancing the sealing performance.

[0044] Example 3: Reference Figure 1 and Figure 3, which is different from Example 2, is that a door leaf comprises a door leaf outer panel 63 and a door leaf inner panel 62 which are parallel to each other, the above-mentioned anti-condensation broken bridge structure is arranged between the door leaf outer panel 63 and the door leaf inner panel 62, two groups of anti-condensation broken bridge structures are arranged between the door leaf outer panel 63 and the door leaf inner panel 62, the two groups of anti-condensation broken bridge structures are located at both ends of the door panel 6, a supporting lining 9 is arranged between the two groups of anti-condensation broken bridge structures, and the two groups of anti-condensation broken bridge structures are arranged symmetrically about the supporting lining 9. Each group of anti-condensation broken bridge structures is arranged in two, a blocking block 8 is arranged between the two anti-condensation broken bridge structures, and the two anti-condensation broken bridge structures of each group are arranged symmetrically about the blocking block 8, and the blocking block 8 is also made of hard PVC material.

[0045] A snap-in groove 14 is provided on the side of the thermal insulation component 1 away from the supporting lining 9, and one end of the blocking block 8 away from the supporting lining 9 is snap-into the snap-in groove 14, and the two side walls of the blocking block 8 are respectively abutted against the second connecting members 3 on both sides, and the side of the blocking block 8 close to the supporting lining 9 is abutted against the thermal insulation component 1, and the second connecting member 3 is snap-in and fixed by the blocking block 8 and the thermal insulation component 1.

[0046] The interior of the barrier block 8 is configured to be hollow, and a plurality of reinforcing columns 81 are provided inside the barrier block 8 . The reinforcing columns 81 are fixedly connected to the barrier block 8 , and the reinforcing columns 81 are perpendicular to the straight plate 21 .

[0047] The barrier block 8 is filled with air through a hollow setting. Since the thermal conductivity coefficient of air is lower than that of the barrier block 8, the barrier block 8 has a better thermal insulation effect. In addition, the reinforcing column 81 can provide support for the barrier block 8 and reduce the possibility of deformation of the barrier block 8.

[0048] The number of supporting linings 9 is set to two, and one supporting lining 9 is close to the door leaf outer panel 63, and the other supporting lining 9 is close to the door leaf inner panel 62. A positioning plate 211 is fixedly connected to the straight plate 21 of the first connecting member 2, and the end of the positioning plate 211 away from the straight plate 21 is fixed to the side wall of the supporting lining 9. The supporting lining 9 and the thermal insulation component 1 are made of the same material, and a sound-absorbing layer 93 is provided between the two supporting liners 9.

[0049] The side of the door leaf outer plate 63 and the door leaf inner plate 62 close to the support lining 9 is fixedly connected with a flame retardant pad 92, and the flame retardant pad 92 is also fixedly connected to the side wall of the adjacent support lining 9. The flame retardant pad 92 separates the support lining 9 from the door leaf outer plate 63 or the door leaf inner plate 62, plays a role in flame retardancy and fire prevention, and at the same time reduces the possibility of melting and deformation of the support lining 9 due to high temperature.

[0050] The sound absorbing layer 93 includes multiple rows of support tubes 931, the axes of the support tubes 931 are parallel to the reinforcing column 81, both ends of the support tubes 931 are fixedly connected to the adjacent support lining 9, multiple support tubes 931 are provided in each row, and the support tubes 931 in each row are arranged in parallel with the same height, and the two adjacent rows of support tubes 931 are arranged in a staggered manner, so that the sound absorbing layer 93 is wavy as a whole. In this way, the sound absorbing layer 93 can achieve the effect of sound absorption, and at the same time, the support tubes 931 have a supporting effect on the support lining 9.

[0051] A cavity is opened inside the support lining 9 to reduce heat conduction. A support assembly 91 is arranged in the cavity. The support assembly 91 includes a support plate 911 arranged in the cavity. The support plate 911 is slidably connected in the cavity along a direction parallel to the axis of the support tube 931. A plurality of buffer columns 912 are fixedly connected to one end of the support plate 911 away from the sound absorbing layer 93. The buffer columns 912 are fixedly connected to the inner wall of the support lining 9.

[0052] The end of the support plate 911 away from the buffer column 912 is fixedly connected to two driving rods 913, and the ends of the two driving rods 913 away from the support plate 911 are close to each other. A support rod 915 corresponding to the driving rod 913 is also provided inside the support lining 9. The driving rod 913 passes through the support rod 915 and is slidably connected to the support rod 915. The ends of the two support rods 915 close to each other are provided with a buffer spring 914 connecting the two. The ends of the two support rods 915 away from each other pass through the support lining 9, and the support rod 915 is slidably connected to the support lining 9. The end of the support rod 915 passing through the support lining 9 is clamped with the blocking block 8.

[0053] When the door leaf is deformed by external force, the inner panel 62 or the outer panel 63 of the door leaf squeezes the support lining 9, and the side wall of the support lining 9 squeezes the buffer column 912. The buffer column 912 plays a certain buffering role. At the same time, the buffer column 912 squeezes the support plate 911, and the support plate 911 moves toward the direction close to the sound-absorbing layer 93. The support plate 911 drives the driving rod 913 to move, and the driving rod 913 pulls the support rod 915 to move toward the inner side of the support lining 9. At this time, the buffer spring 914 is deformed, and the blocking block 8 provides support for the support rod 915, thereby reducing the deformation of the outer panel 63 or the inner panel 62 of the door leaf.

[0054] In order to further reduce the deformation of the door outer panel 63 or the door inner panel 62, a limiting block 212 is fixedly connected to the straight plate 21, and a limiting groove 10 is provided on the side where the door outer panel 63 and the door inner panel 62 are close to each other. The limiting block 212 is inserted into the limiting groove 10. When the support rod 915 applies a thrust to the blocking block 8, the limiting block 212 also applies a thrust in the same direction to the side wall of the limiting groove 10. Therefore, the limiting blocks 212 on both sides of the door outer panel 63 or the door inner panel 62 apply a leveling pulling force to the door outer panel 63 or the door inner panel 62, thereby reducing the deformation of the door outer panel 63 or the door inner panel 62.

[0055] The implementation principle of Example 2 of the present application is: the anti-condensation broken bridge structure can block heat transfer and improve the thermal insulation effect. The blocking block 8 and the supporting lining 9 support the door leaf outer panel 63 or the door leaf inner panel 62. At the same time, the supporting tube 931 of the sound-absorbing layer 93 provides support for the supporting lining 9, so that the door leaf outer panel 63 or the door leaf inner panel 62 is stably connected, the sound-absorbing layer 93 can absorb sound, and the flame retardant pad 92 can play a role in flame retardancy and fire prevention.

[0056] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A door leaf with an anti-condensation broken bridge structure, characterized in that: The invention comprises a door leaf inner plate (62) and a door leaf outer plate (63), wherein the door leaf inner plate (62) and the door leaf outer plate (63) are both provided with a thermal insulation component (1) in a direction where the door leaf inner plate (62) and the door leaf outer plate (63) are close to each other, and the two thermal insulation components (1) are connected by a second connecting member (3), and the door leaf inner plate (62), the door leaf outer plate (63) and the second connecting member (3) are all connected with a blocking block (8); the inside of the blocking block (8) is arranged to be hollow, and the inside of the blocking block (8) is also provided with A reinforcing column (81) is provided, and two ends of the reinforcing column (81) are respectively facing the door leaf inner plate (62) and the door leaf outer plate (63); a support lining (9) is provided on the side where the door leaf inner plate (62) and the door leaf outer plate (63) are close to each other, and a sound absorbing layer (93) is provided between the two support linings (9), and the sound absorbing layer (93) includes a plurality of rows of support tubes (931), the support tubes (931) in the same row are flush, and two adjacent rows of support tubes (931) are staggered, and the sound absorbing layer (93) is provided in a plurality of rows of support tubes (931). The layer (93) is wavy, and the two ends of the support tube (931) are respectively abutted against the side walls of the two support liners (9), and both sides of the support liners (9) are provided with a thermal insulation piece (1); a first connecting piece (2) is provided on one side of the thermal insulation piece (1), and a second connecting piece (3) is provided in the middle of the thermal insulation piece (1) and is opposite to the first connecting piece (2); a fixing piece (4) is provided on the other side of the thermal insulation piece (1), and the first connecting piece (2), the second connecting piece (3) and the fixing piece (4) are all separated by the thermal insulation piece (1); a screw (5) is passed through the first connecting piece (2), the second connecting piece (3) and the fixing piece (4) at the same time on the thermal insulation piece (1), and the screw (5) is threadedly connected to the first connecting piece (2) and the fixing piece (4); a thermal insulation sealing sleeve (31) is provided between the screw (5) and the second connecting piece (3) to separate and connect the two; and the fixing piece (4) is set as a steel plate (41).

2. A door leaf according to claim 1, characterized in that: The support lining (9) is provided with a cavity inside, and a support assembly (91) is provided in the cavity. The support assembly (91) comprises a support plate (911) arranged in the cavity, a buffer column (912) on one side of the support plate (911) away from the sound absorbing layer (93), one end of the buffer column (912) away from the support plate (911) is fixed to the inner wall of the support lining (9), and the other side of the support plate (911) is fixedly connected to two driving rods (913), one end of the two driving rods (913) away from the support plate (911) gradually tilts toward a side close to each other, and one end of the driving rod (913) away from the support plate (911) is penetrated by and slidably connected to a support rod (915), the support rod (915) is parallel to the support plate (911) and is slidably connected to the support lining (9), and a buffer spring (914) connecting the two support rods (915) is provided between the two support rods (915).

3. A door leaf according to claim 2, characterized in that: One end of the support rod (915) away from the buffer spring (914) passes through the support lining (9), the end of the support rod (915) passing through the support lining (9) is clamped with the blocking block (8), and the end of the blocking block (8) away from the support rod (915) is clamped with the thermal insulation component (1).

4. A door leaf according to claim 3, characterized in that: A stop block (212) is provided on a side of the first connecting member (2) away from the second connecting member (3), and both the door leaf inner plate (62) and the door leaf outer plate (63) are provided with a stop groove (10) corresponding to the stop block (212), and the stop block (212) is inserted into the stop groove (10).

5. A door leaf according to claim 1, characterized in that: A flame retardant layer is provided between the door leaf inner plate (62) and the door leaf outer plate (63) and the supporting lining (9), the flame retardant layer comprising a plurality of evenly distributed flame retardant pads (92), and the door leaf inner plate (62) and the door leaf outer plate (63) are connected to the supporting lining (9) via the flame retardant pads (92).

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