Thermal insulation door

Abstract

The invention relates to a heat insulation and preservation door, in particular to a heat insulation and preservation door which comprises a door frame and two folding door plate assemblies, the middle of the door frame is provided with a slide way penetrating left and right, baffles are fixedly connected to the two sides of the door frame, two L-shaped bases are symmetrically and fixedly connected to the two baffles, and a slide way is formed between each baffle and the corresponding L-shaped base; the rear sides of the two folding door plate assemblies are symmetrically and slidably connected into the sliding ways, and the two ends of the front sides of the two folding door plate assemblies are slidably connected into the four sliding ways correspondingly. Ventilation assemblies are arranged on the two folding door plate assemblies. The folding door plate assembly is a double-layer door plate, double air interlayers are formed, heat conduction and convection are effectively blocked, and indoor and outdoor heat exchange is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to a heat-insulating door, and more particularly to a heat-insulating door. Background Art

[0002] In the field of building energy conservation, insulated doors are key components for controlling heat exchange between indoors and outdoors and reducing energy consumption. Statistics show that heat loss through doors and windows accounts for 30%-50% of traditional building energy consumption, a proportion particularly high in extreme climates. Therefore, the development of highly efficient insulated doors has become a key technological focus for reducing building energy consumption and improving living comfort. Existing insulated door designs primarily rely on two approaches: 1. Single-layer door panels: Insulation is achieved by increasing the thickness of the door panels or filling them with traditional insulation materials. However, single-layer structures have limited thermal resistance, and their material properties are easily affected by factors such as ambient humidity and aging, significantly diminishing their insulation effectiveness over time. 2. Double-layer door panels: Some high-end products utilize two independent door panels with an air barrier between them to enhance insulation. However, this design has the following drawbacks: insufficient sealing and a large footprint: the independent double-layer door panels require space on both sides for opening, limiting their applicability in narrow passageways or small rooms. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, the present invention provides a heat-insulating door, which has the beneficial effect that the folding door panel assembly is a double-layer door panel, forming a double air barrier, effectively blocking heat conduction and convection, and significantly reducing indoor and outdoor heat exchange.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A heat-insulating door comprises a door frame and two folding door panel assemblies. A slide running through the middle of the door frame is provided on the left and right sides. Baffles are fixed on both sides of the door frame. Two L-shaped seats are symmetrically fixed on the two baffles. A slide is formed between each baffle and the L-shaped seat. The rear sides of the two folding door panel assemblies are symmetrically slidably connected in the slide, and the two ends of the front sides of the two folding door panel assemblies are respectively slidably connected in four slides; ventilation assemblies are provided on both folding door panel assemblies.

[0006] Two sliding grooves are symmetrically provided at the upper and lower ends of the inner side of the door frame. The folding door panel assembly includes door panel I and door panel II. The door panel I is slidably connected to the slide. The inner side of door panel I is connected to a hinge seat. Both ends of the hinge seat are threadedly connected to a shaft. The inner side of door panel II is rotatably connected to the two shafts. The outer ends of the two shafts are respectively slidably connected to the two relatively arranged sliding grooves; the outer side of the door panel II is fixed with a rotating shaft, and the two ends of the rotating shaft are respectively slidably connected to the two relatively arranged slides. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0008] Figure 1 A schematic diagram of the structure of a closed thermal insulation door;

[0009] Figure 2 A schematic diagram of the structure of an open heat-insulating door;

[0010] Figure 3 It is a schematic diagram of the cross-sectional structure of an open heat-insulating door;

[0011] Figure 4 Schematic diagram of the structure of the door frame;

[0012] Figure 5 It is a structural schematic diagram of the folding door panel assembly;

[0013] Figure 6 This is a schematic diagram of the structure of the door panel I and the inserting plate I;

[0014] Figure 7 This is a schematic diagram of the structure of the door panel I and the sidewall;

[0015] Figure 8 It is a structural diagram of door panel II and shaft rod;

[0016] Figure 9 It is a structural diagram of the plugboard I;

[0017] Figure 10 Schematic diagram of the structure of plug-in board I and plug-in board II;

[0018] Figure 11 A schematic cross-sectional view of the folding door panel assembly in a closed state;

[0019] Figure 12 This is a schematic diagram of the structure of the roller and the U-shaped magnetic block;

[0020] Figure 13 It is a structural diagram of the two door panels I in the closed state;

[0021] Figure 14 This is a schematic diagram of the installation structure of the door frame and door box.

[0022] In the figure: door frame 101; slide 102; slide groove 103; baffle 104; groove 105; door box 106; L-shaped seat 107; block 108; U-shaped magnetic block 109; door panel I 201; side rib 202; vent I 203; insert plate I 204; magnetic strip I 205; magnetic strip II 206; C-shaped seat 207; chamber 208; door panel II 301; vent II 302; insert plate II 303; magnetic strip III 304; ridge 305; ridge 306; magnetic strip IV 307; rotating shaft 308; roller 309; shaft 310; hinged seat 311. DETAILED DESCRIPTION

[0023] like Figures 1 to 5 As shown:

[0024] A heat-insulating door includes a door frame 101 and two folding door panel assemblies. A slideway 102 is provided in the middle of the door frame 101, extending left and right. A baffle 104 is fixedly connected to each side of the door frame 101. Two L-shaped seats 107 are symmetrically fixed to each baffle 104. A slideway is formed between each baffle 104 and the L-shaped seat 107. The rear sides of the two folding door panel assemblies are symmetrically slidably connected within the slideway 102. The two ends of the front sides of the two folding door panel assemblies are respectively slidably connected within the four slideways. Ventilation assemblies are provided on both folding door panel assemblies.

[0025] Screw holes are provided on the door frame 101 and the two baffles 104 for fixing the door frame 101. The two baffles 104 are used to be fixed on the walls on both sides of the corridor to enhance the stability of the door frame 101. Secondly, the door frame 101 and the two baffles 104 can also be installed in the wall in an embedded manner, thereby not occupying the space of the corridor.

[0026] The folding door panel assembly features a double layer of panels, creating a double air barrier that effectively blocks both heat conduction and convection, significantly reducing heat exchange between indoor and outdoor spaces. The foldable design maintains the double layer structure when closed, effectively blocking temperature exchange between inside and outside, enhancing thermal insulation.

[0027] Secondly, the traditional double door may require a larger opening space, and the two folding door panel components are foldable. When opened, the rear side is pushed to the left and right sides, and the front side is stored along the slide and attached to the side of the baffle 104. Figure 2 As shown, it can take up less horizontal space. Therefore, the opening mode of the folding door panel assembly is suitable for places with limited space, such as narrow corridors or kitchens.

[0028] Furthermore, double-layer door panels are stronger than single-layer ones, have a stronger ability to resist wind pressure or external impact, and extend their service life.

[0029] like Figure 4 、 5 , 7 and 9:

[0030] Two sliding grooves 103 are symmetrically provided at the upper and lower ends of the inner side of the door frame 101. The folding door panel assembly includes a door panel I 201 and a door panel II 301. The door panel I 201 is slidably connected to the slide 102. The inner side of the door panel I 201 is connected to a hinge seat 311. Both ends of the hinge seat 311 are threadedly connected to a shaft 310. The inner side of the door panel II 301 is rotatably connected to the two shafts 310. The outer ends of the two shafts 310 are respectively slidably connected to the two oppositely arranged sliding grooves 103. The outer side of the door panel II 301 is fixedly connected to a rotating shaft 308. The two ends of the rotating shaft 308 are respectively slidably connected to the two oppositely arranged slides.

[0031] The door panel Ⅰ 201 slides in the slideway 102.

[0032] When closed, the inner sides of the two door panels I201 fit together, and the door panel II301 and door panel I201 are in a fit state to form a double-layer structure, which can provide higher stability in a strong wind environment and reduce the shaking or noise of the door panels. A layer of sponge can be bonded and fixed on the surface where the door panel I201 and door panel II301 fit together to achieve a close fit and reduce air leakage or heat seepage.

[0033] The outer side of the door panel II 301 is fixed with a handle by screws, and the inner side of the baffle 104 is provided with a groove 105 corresponding to the position of the handle, so that the groove facilitates the hand to hold the handle and pull the door panel II 301 forward.

[0034] When the two folding door panel assemblies need to be opened, the handle is held and the door panel II 301 is pulled forward. The two ends of the rotating shaft 308 slide forward along the slide. At the same time, the inner side of the door panel II 301 rotates around the axis of the two shafts 310 and drives the inner side of the door panel I 201 to slide outward through the hinge seat 311. Then, when the door panel II 301 is pulled forward, the door panel I 201 can be simultaneously driven to move outward and open, thereby realizing the "one pull, two openings" opening method. The user does not need to operate the two layers of door panels separately to open them. Therefore, when closing, it can have a double-layer heat insulation function. When opening, the door panel II 301 and the door panel I 201 can be opened synchronously by only pulling one of the door panels II 301, which is convenient to operate.

[0035] Furthermore, traditional double doors need to be pushed to both sides, occupying the passage space on both sides; while when the folding door panel assembly is opened, the door panel I 201 moves horizontally outward, and the door panel II 301 moves forward as a whole and retracts to the side close to the baffle 104. It does not need to occupy the corridor space where users enter the house, and can be opened, which is suitable for use in narrow corridors or small rooms.

[0036] The outer side of the slide groove 103 is not connected to the slideway, so the shaft 310 will not slide into the slideway, thereby limiting the opening angle of the door panel II 301, so that when the door panels I 201 and II 301 are fully opened, the door panel II 301 is in a tilted state, such as Figure 3 As shown, when the door panel II 301 is pushed backward, the door panel II 301 will slide backward along its own tilt direction to reset, avoiding the door panel II 301 from being completely attached to one side of the baffle 104, resulting in a jamming phenomenon when the door panel II 301 is closed.

[0037] like Figures 6 to 11 As shown:

[0038] The door panels I201 and II301 are provided with ventilation openings I203 and II302, respectively. Insertion plates I204 and II303 are inserted into ventilation openings I203 and II302, respectively. Magnetic strips II206 and IV307 are fixed to the upper ends of ventilation openings I203 and II302, respectively. Insertion plates I204 and III304 are fixed to the upper ends of insertion plates II303 and II303, respectively.

[0039] The inserting plate I 204 is fixedly connected to a C-shaped seat 207 , and the inserting plate II 303 is fixedly connected to a ridge 305 that can be inserted into the C-shaped seat 207 ; a convex edge 306 is fixedly connected to the front side of the ridge 305 .

[0040] Under normal circumstances, when the two folding door panel assemblies are in the closed state, the magnetic strip I 205 is adsorbed on the magnetic strip II 206, the plug plate I 204 blocks the air vent I 203, the magnetic strip III 304 is adsorbed on the magnetic strip IV 307, and the plug plate II 303 blocks the air vent II 302, so that the door panels I 201 and II 301 are in a heat-insulating state as a whole, and the ridge 305 is also inserted in the C-shaped seat 207. When the two folding door panel assemblies are in the closed state and need to be ventilated, the convex edge 306 is pushed downward, and the convex edge 306 drives the plugging plate II 303 to move downward so that the magnetic strip III 304 is separated from the magnetic strip IV 307. At the same time, the convex rib 305 inserted in the C-shaped seat 207 drives the plugging plate I 204 to move downward synchronously, so that the magnetic strip I 205 is separated from the magnetic strip II 206, and then the plugging plate I 204 and the plugging plate II 303 are opened synchronously, and the air vent I 203 and the air vent II 302 are exposed at the same time to form a small window for ventilation. When the small window needs to be closed, the convex edge 306 is pushed upward, and the convex rib 305 cooperates with the C-shaped seat 207 to drive the plugging plate I 204 and the plugging plate II 303 to move upward synchronously until the magnetic strip III 304 is attracted to the magnetic strip IV 307, and the magnetic strip II 206 is attracted to the magnetic strip I 205, thereby achieving the closing of the air vent I 203 and the air vent II 302. Therefore, when the two folding door panel assemblies are in a closed state, the small windows on the door panel I 201 and the door panel II 301 can be opened synchronously for ventilation, which is convenient to operate.

[0041] Secondly, the cooperation between the ridge 305 and the C-shaped seat 207 does not affect the relative rotation between the door panel I201 and the door panel II301. When the door panel I201 and the door panel II301 rotate relative to each other to open, the ridge 305 automatically detaches from the C-shaped seat 207. When the door panel II301 and the door panel I201 are stacked and closed, the ridge 305 is automatically inserted into the C-shaped seat 207, realizing the synchronous control of the plug-in plate I204 and the plug-in plate II303, which is simple and convenient to operate.

[0042] like Figure 6 、 7 , 9 and 11:

[0043] The inner side of the door panel I 201 is provided with a chamber 208 extending into the interior of the door panel I 201. The inner side of the door panel I 201 is detachably connected to the retaining edge 202 by screws. The hinge seat 311 is detachably connected to the retaining edge 202 by screws.

[0044] When the sidewall 202 is opened, the chamber 208 can be filled with insulating materials, such as aerogel or foam plastic, to further enhance thermal insulation, making it suitable for use in extremely cold or hot environments. Alternatively, the chamber 208 can be filled with sound-absorbing materials, such as glass wool or polyester fiber. The detachable connection between the sidewall 202 and the door panel 1 201 facilitates replacement of new sound-absorbing or insulating materials.

[0045] Furthermore, when double-layer door panels are no longer needed for insulation, the screws between the hinge seat 311 and the retaining edge 202 are removed. The hinge seat 311 and the retaining edge 202 no longer form a single unit, and the door panel II 301 can be operated independently, no longer driving the synchronous movement of the door panel I 201. Therefore, by pulling the handle on the door panel II 301 forward, the door panel II 301 is stored separately in the retaining plate 104. At this time, the two door panels I 201 can be used independently to form a single-layer personal insulation door. If it is necessary to switch to a double-layer door, the hinge seat 311 and the retaining edge 202 are fixed with screws to form a single unit.

[0046] It should be emphasized that after the hinge seat 311 is separated from the retaining edge 202, when the door panel I 201 slides back and forth to open and close, the contact surface between the hinge seat 311 and the door panel I 201 is always a plane. Therefore, when the door panel I 201 moves laterally, it will not drive the retaining edge 202 to rotate. Therefore, when the hinge seat 311 is connected to the retaining edge 202 again, it is only necessary to move the hinge seat 311 that is in contact with the door panel I 201 laterally to the position corresponding to the retaining edge 202 for connection.

[0047] like Figure 9 and 11 As shown:

[0048] Both ends of the rotating shaft 308 are fixed with rollers 309 that are slidably connected therein, so that rolling friction is switched between the rotating shaft 308 and the L-shaped seat 107, thereby making it smoother when pulling the door panel II 301.

[0049] A stopper 108 is screwed to the front end of each slideway on the baffle 104 to limit the movement of the door panel II 301. Each stopper 108 is attached to a U-shaped magnetic block 109 that attracts a roller 309. When the door panel II 301 is opened, the roller 309 attracts the U-shaped magnetic block 109, locking the open door panel II 301 in place and preventing it from automatically sliding closed.

[0050] Both ends of the door frame 101 are fixed with door boxes 106 for receiving the door panels 1201, thereby protecting the door panels 1201. The two door boxes 106 can be fixed to the wall, or a space can be dug out in the wall in advance and the two door boxes 106 can be embedded in the wall.

[0051] Furthermore, after removing the stopper 108, the two shafts 310 can be screwed and removed, so that the shaft 308 can be moved forward along the slide to remove the door panel II 301. When the door panel II 301 is not used for a long time, it is convenient to disassemble and store the door panel II 301.

Claims

1. A heat-insulating door, characterized in that: The invention comprises a door frame (101) and two folding door panel assemblies. A slideway (102) is provided in the middle of the door frame (101) and passes through the door frame (101) on the left and right. Baffles (104) are fixedly connected to both sides of the door frame (101). Two L-shaped seats (107) are symmetrically fixed to the two baffles (104). A slideway is formed between each baffle (104) and the L-shaped seat (107). The rear sides of the two folding door panel assemblies are symmetrically slidably connected in the slideway (102). The two ends of the front sides of the two folding door panel assemblies are respectively slidably connected in the four slideways. Ventilation assemblies are provided on the two folding door panel assemblies.

2. The heat-insulating door according to claim 1, characterized in that: Two sliding grooves (103) are symmetrically provided at the upper and lower ends of the inner side of the door frame (101); the folding door panel assembly comprises a door panel I (201) and a door panel II (301); the door panel I (201) is slidably connected to the inner side of the slideway (102); the inner side of the door panel I (201) is connected to a hinge seat (311); both ends of the hinge seat (311) are threadedly connected to a shaft (310); the inner side of the door panel II (301) is rotatably connected to the two shafts (310); the outer ends of the two shafts (310) are respectively slidably connected to the two sliding grooves (103) arranged opposite to each other; the outer side of the door panel II (301) is fixedly connected to a rotating shaft (308); the two ends of the rotating shaft (308) are respectively slidably connected to the two slideways arranged opposite to each other.

3. The heat-insulating door according to claim 2, characterized in that: The door panel I (201) and the door panel II (301) are respectively provided with an air vent I (203) and an air vent II (302), and the air vent I (203) and the air vent II (302) are respectively inserted with an inserting plate I (204) and an inserting plate II (303), and the upper ends of the air vent I (203) and the air vent II (302) are respectively fixed with a magnetic strip II (206) and a magnetic strip IV (307), and the upper ends of the inserting plate I (204) and the inserting plate II (303) are respectively fixed with an inserting plate I (204) and a magnetic strip III (304).

4. The heat-insulating door according to claim 3, characterized in that: The inserting plate I (204) is fixedly connected to a C-shaped seat (207), and the inserting plate II (303) is fixedly connected to a convex ridge (305) capable of being inserted into the C-shaped seat (207).

5. The heat-insulating door according to claim 4, characterized in that: A convex edge (306) is fixedly connected to the front side of the convex rib (305).

6. The heat-insulating door according to claim 5, characterized in that: The inner side surface of the door panel I (201) is provided with a chamber (208) extending into the interior of the door panel I (201), the inner side surface of the door panel I (201) is detachably connected to a retaining edge (202), and the hinge seat (311) is detachably connected to the retaining edge (202).

7. The heat-insulating door according to claim 2, characterized in that: Both ends of the rotating shaft (308) are fixedly connected with rollers (309) which are slidably connected therein.

8. The heat-insulating door according to claim 7, characterized in that: The baffle (104) is fixedly connected to a stopper (108) at the front end of each slideway, and each stopper (108) is fixedly connected to a U-shaped magnetic block (109) capable of absorbing the roller (309).

9. The heat-insulating door according to claim 2, characterized in that: A handle is fixedly connected to the outer side of the door panel II (301), and a groove (105) corresponding to the position of the handle is opened on the inner side of the baffle (104).

10. The heat-insulating door according to claim 2, characterized in that: Both ends of the door frame (101) are fixedly connected with door boxes (106) for receiving door panels I (201).

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