Novel broken bridge steel combination door

Abstract

The utility model relates to a novel broken bridge steel combination door which comprises a fixed door, a door frame, a door leaf, a middle frame, a doorsill, hinges and the like. The fixed door consists of an upper fixed part and a side fixed part, and is connected with the door frame and the doorsill through a middle frame; the door frame and the door leaf are connected through hinges. The door is characterized in that various steel profiles are connected through the heat insulation connecting strips to form a broken bridge structure, so that the heat insulation performance is improved. The door leaf comprises a door leaf frame, a lower door frame and heat insulation glass, and the heat insulation glass is composed of first glass and second glass and provided with a silver-plated nano-particle coating so as to enhance the heat insulation effect. And the doorsill and the middle frame also adopt similar broken bridge structural design, so that the overall heat insulation performance is ensured. By means of the design, the defect that an existing combined door is insufficient in heat insulation performance is effectively overcome, particularly in the design of a large-area glass window, negative influences on indoor temperature in winter and summer are remarkably reduced through a broken bridge structure, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of doors and windows, in particular to a new type of broken bridge steel composite door. Background Art

[0002] One side of the composite door is a fixed fixing plate, and the other side is an openable door. In architecture and decoration, this type of designed door can increase the width of the passage and also provide a fixed stable structure. The fixed door generally does not move and always remains closed, while the movable door can be freely opened and closed. In products of this door type, it is often necessary to use a large area of glass in the fixed door part to increase the lighting area and thus increase the lighting amount of the passage space. Currently, the composite doors on the market usually adopt a full-metal structure. However, this structure has deficiencies in heat insulation performance, especially when the composite door is designed with a large area of glass windows, the heat insulation effect is even worse. Such a structure has a negative impact on the indoor temperature in both winter and summer, increasing energy consumption. Therefore, developing a composite door that can effectively insulate heat has become an urgent need. Content of the Utility Model

[0003] The utility model relates to a new type of broken bridge steel composite door, which includes components such as a fixed door, a door frame, a door leaf, an intermediate frame, a threshold, and hinges. The fixed door is composed of an upper fixed part and a side fixed part, and is connected to the door frame and the threshold through the intermediate frame; the door frame and the door leaf are connected through hinges. The utility model uses a variety of steel profiles connected by heat insulation connecting strips to form a broken bridge structure, thereby improving the heat insulation performance. The door leaf includes a door leaf frame, a lower door frame, and heat insulation glass. The heat insulation glass is composed of a first glass and a second glass, and is provided with a silver-plated nanoparticle coating to enhance the heat insulation effect. The threshold and the intermediate frame also adopt a similar broken bridge structure design to ensure the overall heat insulation performance. This design effectively solves the deficiencies in the heat insulation performance of existing composite doors, especially in the design of large area glass windows. Through the broken bridge structure, the negative impact on the indoor temperature in both winter and summer is significantly reduced, and energy consumption is reduced.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A new type of broken bridge steel composite door, including: a fixed door, a door frame, a door leaf, an intermediate frame, a threshold, and hinges. The intermediate frame is connected to the fixed door, the lower end of the door frame is connected to one end of the threshold, the door frame and the door leaf are connected through hinges. The fixed door includes: an upper fixed part, a side fixed part. The lower end of the upper fixed part is connected to the intermediate frame, the side of the side fixed part is connected to the intermediate frame, and the lower end of the intermediate frame is connected to the other end of the threshold.

[0006] The door frame is composed of steel profile one connected to steel profile two through a heat insulation connecting strip;

[0007] The door leaf is composed of a door leaf frame, a lower door frame and heat-insulating glass. The door leaf frame is composed of steel profile three and steel profile four connected by a heat-insulating connecting strip; the lower door frame is composed of steel profile seven and steel profile eight connected by a lower door frame heat-insulating connecting strip;

[0008] The middle frame is composed of steel profile five and steel profile six connected by a heat-insulating connecting strip;

[0009] The threshold includes: steel profile nine, a heat-insulating connecting strip, steel profile ten, threshold buckle one, and threshold buckle two. Steel profile nine is connected to steel profile ten through a heat-insulating connecting strip. Threshold buckle two is snap-connected to steel profile ten, and threshold buckle one is snap-connected to steel profile nine, the heat-insulating connecting strip, and threshold buckle two.

[0010] Further setting: Steel profile one is provided with: connecting strip notch one, structural reinforcing rib one; steel profile two is provided with: connecting strip notch two, structural reinforcing rib two, and sealing strip installation protrusion two. One end of the heat-insulating connecting strip is connected to connecting strip notch one, the other end of the heat-insulating connecting strip is connected to connecting strip notch two, and a first sealing strip is provided at the position of sealing strip installation protrusion two.

[0011] Further setting: The heat-insulating glass, warm edge strip, sealant, first glass, and second glass. The surfaces of the first glass and the second glass are provided with a silver-plated nanoparticle coating. The warm edge strip is arranged between the first glass and the second glass, and the sealant is arranged outside the warm edge strip to seal between the first glass and the second glass.

[0012] Further setting: Steel profile three is provided with: connecting strip notch three, structural reinforcing rib three, and sealing strip installation protrusion three. One end of the heat-insulating connecting strip is connected to connecting strip notch three, and the first sealing strip provided at the position of sealing strip installation protrusion three can tightly press and seal steel profile three and steel profile one;

[0013] Steel profile three and the heat-insulating connecting strip are jointly snap-connected to the edge pressing profile, and the edge pressing profile is tightly pressed and sealed with the first glass through a second sealing strip;

[0014] Steel profile four is provided with: connecting strip notch four, structural reinforcing rib four, and sealing strip installation protrusion four. A third sealing strip is provided at the position of sealing strip installation protrusion four to tightly press and seal with the second glass. Steel profile four and steel profile two can be tightly pressed and sealed through the first sealing strip provided at the position of sealing strip installation protrusion two. The other end of the heat-insulating connecting strip is connected to connecting strip notch four.

[0015] Further setting: Steel profile five is provided with: connecting strip notch five, structural reinforcing rib five. The first sealing strip provided at the position of sealing strip installation protrusion three can tightly press and seal steel profile three and steel profile five. Connecting strip notch five is connected to one end of the heat-insulating connecting strip;

[0016] Steel profile five and the heat-insulating connecting strip are jointly snap-connected to the edge pressing profile, and the edge pressing profile is tightly pressed and sealed with the first glass through a second sealing strip;

[0017] The steel profile six is provided with: a connecting strip notch six, a structural reinforcing rib six, a sealing strip mounting protrusion six, and a sealing strip mounting protrusion seven. The connecting strip notch six is connected to the other end of the heat insulation connecting strip. The steel profile four and the steel profile six can be tightly pressed and sealed by a first sealing strip provided at the sealing strip mounting protrusion six. A third sealing strip is provided at the sealing strip mounting protrusion seven and can be tightly pressed and sealed with the second glass.

[0018] Furthermore, the steel profile seven is provided with: a connecting strip notch seven, a structural reinforcing rib seven, and a first lower profile extension part. The connecting strip notch seven is connected to one end of the lower doorframe heat insulation connecting strip. The steel profile seven and the lower doorframe heat insulation connecting strip are jointly clamped with the edge pressing profile. The edge pressing profile is tightly pressed and sealed with the first glass through a second sealing strip;

[0019] The steel profile eight is provided with: a connecting strip notch eight, a structural reinforcing rib eight, a sealing strip mounting protrusion eight, and a second lower profile extension part. The connecting strip notch eight is connected to the other end of the lower doorframe heat insulation connecting strip. A third sealing strip is provided at the sealing strip mounting protrusion eight and can be tightly pressed and sealed with the second glass;

[0020] The lower end of the lower doorframe heat insulation connecting strip is provided with: a sealing and water blocking strip mounting position. A sealing and water blocking strip is provided at the sealing and water blocking strip mounting position. The sealing and water blocking strip is provided with: a sealing strip and a water blocking strip.

[0021] Furthermore, the steel profile nine is provided with: a connecting strip notch nine, a structural reinforcing rib nine. The connecting strip notch nine is connected to one end of the heat insulation connecting strip;

[0022] The steel profile ten is provided with: a connecting strip notch ten, a structural reinforcing rib ten. The connecting strip notch ten is connected to the other end of the heat insulation connecting strip; The steel profile ten is clamped with the steel profile ten. The steel profile ten, the steel profile nine, and the steel profile ten are jointly clamped with the threshold buckle strip one. The threshold buckle strip one is provided with: a water blocking step and a water draining slope. The water blocking strip is arranged outside the water blocking step. The sealing strip is tightly pressed and sealed with the upper end surface of the threshold buckle strip one.

[0023] Furthermore, the door leaf is provided with: a door lock part. The door lock part includes: a door lock part pressing plate one and a door lock part pressing plate two. The door lock part pressing plate one is tightly pressed and sealed with the first glass through a second sealing strip. The door lock part pressing plate two is tightly pressed and sealed with the second glass through a fourth sealing strip.

[0024] Furthermore, a glass spacer is provided between the upper end surface of the heat insulation connecting strip arranged in the middle frame at the lower end of the upper fixing part and the heat insulation glass.

[0025] This utility model uses a variety of steel profiles connected by heat-insulating connecting strips to form a broken bridge structure, thereby improving the heat-insulating performance. The door leaf includes a door leaf frame, a lower door frame, and heat-insulating glass. The heat-insulating glass is composed of a first glass and a second glass, and is provided with a silver-plated nanoparticle coating to enhance the heat-insulating effect. The threshold and the middle frame also adopt a similar broken bridge structure design to ensure the overall heat-insulating performance. This design effectively solves the deficiency of the existing combined door in heat-insulating performance. Especially in the design of large-area glass windows, the broken bridge structure significantly reduces the negative impact on the indoor temperature in winter and summer, and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the front view of this utility model;

[0027] Figure 2 is Figure 1 the sectional view with the A cutting line as the reference in

[0028] Figure 3 is Figure 1 the sectional view with the B cutting line as the reference in

[0029] Figure 4 is Figure 1 the sectional view with the C cutting line as the reference in

[0030] Figure 5 is the sectional view of the door frame of this utility model;

[0031] Figure 6 is the exploded sectional view of the door frame of this utility model;

[0032] Figure 7 is the sectional view of the door leaf frame of this utility model;

[0033] Figure 8 is the exploded sectional view of the door leaf frame of this utility model;

[0034] Figure 9 is the sectional view of the middle frame of this utility model;

[0035] Figure 10 is the exploded sectional view of the middle frame of this utility model;

[0036] Figure 11 is the sectional view of the lower door frame of this utility model;

[0037] Figure 12 is the exploded sectional view of the lower door frame of this utility model;

[0038] Figure 13 is the sectional view of the threshold of this utility model;

[0039] Figure 14Exploded sectional view of the threshold of the present utility model;

[0040] In the figure: fixed door, upper fixing part 11, side fixing part 12, edge pressing profile 13,

[0041] door frame 2, first steel profile 21, first connecting strip notch 22, first structural reinforcing rib 23, second steel profile 24, second connecting strip notch 25, second structural reinforcing rib 26, second sealing strip installation protrusion 27, door leaf 3, door leaf frame 31, third steel profile 32, third connecting strip notch 33, third structural reinforcing rib 34, third sealing strip installation protrusion 35, fourth steel profile 36, fourth connecting strip notch 37, fourth structural reinforcing rib 38, fourth sealing strip installation protrusion 39,

[0042] intermediate frame 4, fifth steel profile 41, fifth connecting strip notch 42, fifth structural reinforcing rib 43, sixth steel profile 44, sixth connecting strip notch 45, sixth structural reinforcing rib 46, sixth sealing strip installation protrusion 47, seventh sealing strip installation protrusion 48,

[0043] lower door frame 5, seventh steel profile 51, seventh connecting strip notch 52, seventh structural reinforcing rib 53, seventh sealing strip installation protrusion 54, eighth steel profile 55, eighth connecting strip notch 56, eighth structural reinforcing rib 57, eighth sealing strip installation protrusion 58, lower baffle extension 59,

[0044] threshold 6, ninth steel profile 61, ninth connecting strip notch 62, ninth structural reinforcing rib 63, tenth steel profile 64, tenth connecting strip notch 65, tenth structural reinforcing rib 66, first threshold fastening strip 67, water retaining step 671, water falling slope 672, second threshold fastening strip 68,

[0045] thermal insulation connecting strip 71, lower door frame thermal insulation connecting strip 72, sealing and water retaining strip installation position 721, sealing and water retaining strip 73, sealing strip 731, water retaining strip 732,

[0046] first sealing strip 74, second sealing strip 75, third sealing strip 76, fourth sealing strip 77, thermal insulation glass 8, warm edge strip 81, sealant 82, first glass 83, second glass 84, door lock part 9, first door lock part pressing plate 91, second door lock part pressing plate 92, hinge 93, glass cushion block 94. Specific embodiments

[0047] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0048] In the following description, numerous specific details are set forth to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0049] Secondly, the present utility model is described in detail in conjunction with the schematic diagrams. When detailing the embodiments of the present utility model, for ease of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0050] To make the objectives, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0051] According to the content of the claims and the specification, the specific embodiments are as follows:

[0052] As Figures 1 to 14 shown, the present utility model provides a new type of broken bridge steel composite door, including: a fixed door, a door frame 2, a door leaf 3, an intermediate frame 4, a threshold 6, and a hinge 93. The intermediate frame 4 is connected to the fixed door, the lower end of the door frame 2 is connected to one end of the threshold 6, the door frame 2 is connected to the door leaf 3 through the hinge 93. The fixed door includes: an upper fixed part 11 and a side fixed part 12. The lower end of the upper fixed part 11 is connected to the intermediate frame 4, the side surface of the side fixed part 12 is connected to the intermediate frame 4, and the lower end of the intermediate frame 4 is connected to the other end of the threshold 6.

[0053] The door frame 2 is composed of a first steel profile 21 connected to a second steel profile 24 through a heat insulation connecting strip 71;

[0054] The door leaf 3 is composed of a door leaf frame 31, a lower door frame 5, and heat insulation glass 8. The door leaf frame 31 is composed of a third steel profile 32 connected to a fourth steel profile 36 through a heat insulation connecting strip 71; the lower door frame 5 is composed of a seventh steel profile 51 connected to an eighth steel profile 55 through a lower door frame heat insulation connecting strip 72;

[0055] The intermediate frame 4 is composed of a fifth steel profile 41 connected to a sixth steel profile 44 through a heat insulation connecting strip 71;

[0056] The threshold 6 includes: a ninth steel profile 61, a heat insulation connecting strip 71, a tenth steel profile 64, a threshold buckle strip one 67, and a threshold buckle strip two 68. The ninth steel profile 61 is connected to the tenth steel profile 64 through the heat insulation connecting strip 71. The threshold buckle strip two 68 is clamped to the tenth steel profile 64, and the threshold buckle strip one 67 is clamped to the ninth steel profile 61, the heat insulation connecting strip 71, and the threshold buckle strip two 68.

[0057] Preferably, the first steel profile 21 is provided with: a connecting strip notch 22 and a first structural reinforcing rib 23; the second steel profile 24 is provided with: a connecting strip notch 25, a second structural reinforcing rib 26, and a second sealing strip installation protrusion 27. One end of the heat insulation connecting strip 71 is connected to the connecting strip notch 22, and the other end of the heat insulation connecting strip 71 is connected to the connecting strip notch 25. A first sealing strip 74 is arranged at the second sealing strip installation protrusion 27.

[0058] Preferably, the insulating glass 8, the warm edge strip 81, the sealant 82, the first glass 83, and the second glass 84. The surfaces of the first glass 83 and the second glass 84 are provided with a silver-plated nanoparticle coating. The warm edge strip 81 is arranged between the first glass 83 and the second glass 84, and the sealant 82 is arranged outside the warm edge strip 81 to seal between the first glass 83 and the second glass 84.

[0059] Preferably, the third steel profile 32 is provided with: a connecting strip notch 33, a third structural reinforcing rib 34, and a third sealing strip installation protrusion 35. One end of the heat insulation connecting strip 71 is connected to the connecting strip notch 33. The first sealing strip 74 arranged at the third sealing strip installation protrusion 35 can tightly press and seal the third steel profile 32 and the first steel profile 21;

[0060] The third steel profile 32 and the heat insulation connecting strip 71 are jointly clamped with the edge pressing profile 13. The edge pressing profile 13 is tightly pressed and sealed with the first glass 83 through the second sealing strip 75;

[0061] The fourth steel profile 36 is provided with: a connecting strip notch 37, a fourth structural reinforcing rib 38, and a fourth sealing strip installation protrusion 39. A third sealing strip 76 arranged at the fourth sealing strip installation protrusion 39 can tightly press and seal with the second glass 84. The fourth steel profile 36 and the second steel profile 24 can be tightly pressed and sealed through the first sealing strip 74 arranged at the second sealing strip installation protrusion 27. The connecting strip notch 37 is connected to the other end of the heat insulation connecting strip 71.

[0062] Preferably, the fifth steel profile 41 is provided with: a connecting strip notch 42 and a fifth structural reinforcing rib 43. The first sealing strip 74 arranged at the third sealing strip installation protrusion 35 can tightly press and seal the third steel profile 32 and the fifth steel profile 41. The connecting strip notch 42 is connected to one end of the heat insulation connecting strip 71;

[0063] The fifth steel profile 41 and the heat insulation connecting strip 71 are jointly clamped with the edge pressing profile 13. The edge pressing profile 13 is tightly pressed and sealed with the first glass 83 through the second sealing strip 75;

[0064] The steel profile six 44 is provided with: a connecting strip notch six 45, a structural reinforcing rib six 46, a sealing strip mounting protrusion six 47, and a sealing strip mounting protrusion seven 48. The connecting strip notch six 45 is connected to the other end of the heat insulation connecting strip 71. The steel profile four 36 and the steel profile six 44 can be tightly sealed by the first sealing strip 74 provided at the sealing strip mounting protrusion six 47. A third sealing strip 76 is provided at the sealing strip mounting protrusion seven 48 and can be tightly sealed with the second glass 84.

[0065] Preferably, the steel profile seven 51 is provided with: a connecting strip notch seven 52, a structural reinforcing rib seven 53, and a first lower strip extension 54. The connecting strip notch seven 52 is connected to one end of the lower doorframe heat insulation connecting strip 72. The steel profile seven 51 and the lower doorframe heat insulation connecting strip 72 are jointly clamped with the edge pressing profile 13. The edge pressing profile 13 is tightly sealed with the first glass 83 through the second sealing strip 75;

[0066] The steel profile eight 55 is provided with: a connecting strip notch eight 56, a structural reinforcing rib eight 57, a sealing strip mounting protrusion eight 58, and a second lower strip extension 59. The connecting strip notch eight 56 is connected to the other end of the lower doorframe heat insulation connecting strip 72. A third sealing strip 76 is provided at the sealing strip mounting protrusion eight 58 and can be tightly sealed with the second glass 84;

[0067] The lower end of the lower doorframe heat insulation connecting strip 72 is provided with: a sealing water stop strip mounting position 721. A sealing water stop strip 73 is provided at the sealing water stop strip mounting position 721. The sealing water stop strip 73 is provided with: a sealing strip 731 and a water stop strip 732.

[0068] Preferably, the steel profile nine 61 is provided with: a connecting strip notch nine 62 and a structural reinforcing rib nine 63. The connecting strip notch nine 62 is connected to one end of the heat insulation connecting strip 71;

[0069] The steel profile ten 64 is provided with: a connecting strip notch ten 65 and a structural reinforcing rib ten 66. The connecting strip notch ten 65 is connected to the other end of the heat insulation connecting strip 71. The steel profile ten 64 is clamped with the steel profile ten 64. The steel profile ten 64, the steel profile nine 61, and the steel profile ten 64 are jointly clamped with the threshold buckle strip one 67. The threshold buckle strip one 67 is provided with: a water stop step 671 and a water falling slope 672. The water stop strip 732 is arranged outside the water stop step 671. The sealing strip 731 is tightly sealed with the upper end face of the threshold buckle strip one 67.

[0070] Preferably, the door leaf 3 is provided with: a door lock part 9. The door lock part 9 includes: a door lock part pressing plate one 91 and a door lock part pressing plate two 92. The door lock part pressing plate one 91 is tightly sealed with the first glass 83 through the second sealing strip 75. The door lock part pressing plate two 92 is tightly sealed with the second glass 84 through the fourth sealing strip 77.

[0071] Preferably, a glass spacer 94 is provided between the upper end face of the heat insulation connecting strip 71 disposed in the middle frame 4 at the lower end of the upper fixing part 11 and the heat insulation glass 8.

[0072] By adding heat insulation connecting strips (heat insulation connecting strip 71, lower door frame heat insulation connecting strip 72) to the door frame 2 and the door leaf 3, the present utility model realizes a broken bridge structure, effectively blocking the transfer of heat.

[0073] By providing sealing strips (such as a sealing water stop strip 73, a first sealing strip 74, a second sealing strip 75, a third sealing strip 76, a fourth sealing strip 77) and sealing strip installation positions (such as a second sealing strip installation protrusion 27, a third sealing strip installation protrusion 35, a fourth sealing strip installation protrusion 39, a sixth sealing strip installation protrusion 47, a seventh sealing strip installation protrusion 48, an eighth sealing strip installation protrusion 58, a sealing water stop strip installation position 721, etc.), the present utility model enhances the sealing performance of the door and further improves the heat insulation effect.

[0074] By providing structural reinforcing ribs (a first structural reinforcing rib 23, a second structural reinforcing rib 26, a third structural reinforcing rib 34, a fourth structural reinforcing rib 38, a fifth structural reinforcing rib 43, a sixth structural reinforcing rib 46, a seventh structural reinforcing rib 53, an eighth structural reinforcing rib 57, a ninth structural reinforcing rib 63, a tenth structural reinforcing rib 66) in steel profiles (such as a first steel profile 21, a second steel profile 24, a third steel profile 32, a fourth steel profile 36, a fifth steel profile 41, a sixth steel profile 44, a seventh steel profile 51, an eighth steel profile 55, a ninth steel profile 61, a tenth steel profile 64, etc.), the present utility model enhances the structural rigidity and overall stability of the door.

[0075] Although the present utility model has been described above with reference to the embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present utility model can be combined with each other in any way. The exhaustive description of these combinations is omitted in this specification only for the sake of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A new type of thermal break steel combined door, including: A fixed door, a door frame (2), a door leaf (3), an intermediate frame (4), a threshold (6), and a hinge (93); the intermediate frame (4) is connected to the fixed door, the lower end of the door frame (2) is connected to one end of the threshold (6), the door frame (2) and the door leaf (3) are connected via the hinge (93), and the fixed door comprises an upper fixing portion (11) and a side fixing portion (12); the lower end of the upper fixing portion (11) is connected to the intermediate frame (4), the side surface of the side fixing portion (12) is connected to the intermediate frame (4), the lower end of the intermediate frame (4) is connected to the other end of the threshold (6), The invention is characterized in that: the door frame (2) is composed of a steel profile 1 (21) connected to a steel profile 2 (24) via a heat-insulating connecting strip (71); The door leaf (3) is composed of a door leaf frame (31), a lower door frame (5) and a heat-insulating glass (8); the door leaf frame (31) is composed of a steel profile 3 (32) connected to a steel profile 4 (36) via a heat-insulating connecting strip (71); the lower door frame (5) is composed of a steel profile 7 (51) connected to a steel profile 8 (55) via a lower door frame heat-insulating connecting strip (72); The middle frame (4) is composed of a steel profile five (41) connected to a steel profile six (44) via a heat-insulating connecting strip (71); The threshold (6) comprises: a steel profile nine (61), a heat-insulating connecting strip (71), a steel profile ten (64), a threshold buckle strip one (67), and a threshold buckle strip two (68). The steel profile nine (61) is connected to the steel profile ten (64) via the heat-insulating connecting strip (71), the threshold buckle strip two (68) is clamped with the steel profile ten (64), and the threshold buckle strip one (67) is clamped with the steel profile nine (61), the heat-insulating connecting strip (71), and the threshold buckle strip two (68).

2. The novel thermal break steel combined door according to claim 1 is characterized by: The first steel profile (21) is provided with: a first connecting strip slot (22) and a first structural reinforcement rib (23); the second steel profile (24) is provided with: a second connecting strip slot (25), a second structural reinforcement rib (26), and a second sealing strip installation protrusion (27); the first connecting strip slot (22) is connected to one end of the heat insulating connecting strip (71), the second connecting strip slot (25) is connected to the other end of the heat insulating connecting strip (71), and a first sealing strip (74) is provided at the second sealing strip installation protrusion (27).

3. The new type of thermal break steel combined door according to claim 2 is characterized by: Insulating glass (8), a warm edge strip (81), a sealant (82), a first glass (83), and a second glass (84); the surfaces of the first glass (83) and the second glass (84) are provided with a silver-plated nanoparticle coating; the warm edge strip (81) is provided between the first glass (83) and the second glass (84); and the sealant (82) is provided on the outer side of the warm edge strip (81) to seal the first glass (83) and the second glass (84).

4. The new type of thermal break steel combined door according to claim 3 is characterized by: The steel profile three (32) is provided with: a connection strip notch three (33), a structural reinforcement rib three (34), and a sealing strip installation protrusion three (35); the connection strip notch three (33) is connected to one end of the heat insulation connection strip (71); and the first sealing strip (74) provided at the sealing strip installation protrusion three (35) can press and seal the steel profile three (32) and the steel profile one (21); The third steel profile (32) and the heat-insulating connecting strip (71) are clamped together with the edge pressing profile (13), and the edge pressing profile (13) is tightly pressed and sealed with the first glass (83) via the second sealing strip (75); The steel profile four (36) is provided with: a connecting strip groove four (37), a structural reinforcement rib four (38), and a sealing strip installation protrusion four (39). A third sealing strip (76) is provided at the sealing strip installation protrusion four (39) to be tightly sealed with the second glass (84). The steel profile four (36) and the steel profile two (24) can be tightly sealed by the first sealing strip (74) provided at the sealing strip installation protrusion two (27). The connecting strip groove four (37) is connected to the other end of the heat insulation connecting strip (71).

5. The new type of thermal break steel combined door according to claim 4 is characterized by: The steel profile five (41) is provided with: a connection strip notch five (42), a structural reinforcement rib five (43), a first sealing strip (74) provided at the sealing strip installation protrusion three (35) can press and seal the steel profile three (32) and the steel profile five (41), and the connection strip notch five (42) is connected to one end of the heat insulation connection strip (71); The steel profile 5 (41) and the heat-insulating connecting strip (71) are clamped together with the edge pressing profile (13), and the edge pressing profile (13) is tightly pressed and sealed with the first glass (83) via the second sealing strip (75); The steel profile six (44) is provided with: a connection strip groove six (45), a structural reinforcement rib six (46), a sealing strip installation protrusion six (47), and a sealing strip installation protrusion seven (48); the connection strip groove six (45) is connected to the other end of the heat insulation connection strip (71); the steel profile four (36) and the steel profile six (44) can be tightly sealed by a first sealing strip (74) arranged at the sealing strip installation protrusion six (47); the sealing strip installation protrusion seven (48) is provided with a third sealing strip (76) which can be tightly sealed with the second glass (84).

6. The new type of thermal break steel combined door according to claim 5 is characterized by: The steel profile seven (51) is provided with: a connecting strip notch seven (52), a structural reinforcement rib seven (53), and a first lower stop extension portion (54); the connecting strip notch seven (52) is connected to one end of a lower door frame heat insulation connecting strip (72); the steel profile seven (51) and the lower door frame heat insulation connecting strip (72) are jointly clamped with a press edge profile (13); and the press edge profile (13) is tightly sealed with the first glass (83) through a second sealing strip (75); The steel profile eight (55) is provided with: a connecting strip notch eight (56), a structural reinforcement rib eight (57), a sealing strip installation protrusion eight (58), and a second lower stop extension portion (59); the connecting strip notch eight (56) is connected to the other end of the lower door frame heat insulation connecting strip (72); a third sealing strip (76) is provided at the sealing strip installation protrusion eight (58) to be tightly pressed and sealed with the second glass (84); The lower end of the lower door frame heat-insulating connecting strip (72) is provided with a sealing water retaining strip installation position (721), a sealing water retaining strip (73) is provided at the sealing water retaining strip installation position (721), and the sealing water retaining strip (73) is provided with a sealing strip (731) and a water retaining strip (732).

7. The new type of thermal break steel combined door according to claim 6 is characterized by: The steel profile nine (61) is provided with: a connection strip notch nine (62), a structural reinforcement rib nine (63), and the connection strip notch nine (62) is connected to one end of the heat insulation connection strip (71); The steel profile ten (64) is provided with: a connecting strip notch ten (65), a structural reinforcement rib ten (66), and the connecting strip notch ten (65) is connected to the other end of the heat insulation connecting strip (71); the steel profile ten (64) is clamped with the steel profile ten (64), the steel profile ten (64) and the steel profile nine (61) and the steel profile ten (64) are clamped with the threshold buckle strip one (67), and the threshold buckle strip one (67) is provided with: a water retaining step (671) and a water falling slope (672), the water retaining strip (732) is arranged on the outside of the water retaining step (671), and the sealing strip (731) is tightly pressed and sealed with the upper end surface of the threshold buckle strip one (67).

8. The new type of thermal break steel combined door according to claim 7 is characterized by: The door leaf (3) is provided with a door lock part (9), the door lock part (9) comprising a first door lock part pressure plate (91) and a second door lock part pressure plate (92), the first door lock part pressure plate (91) is tightly pressed and sealed with the first glass (83) via a second sealing strip (75), and the second door lock part pressure plate (92) is tightly pressed and sealed with the second glass (84) via a fourth sealing strip (77).

9. The novel thermal-break steel combined door according to claim 5 is characterized by: A glass pad (94) is arranged between the upper end surface of the heat-insulating connecting strip (71) arranged in the middle frame (4) at the lower end of the upper fixing part (11) and the heat-insulating glass (8).

Images