Transition door for reducing indoor and outdoor oxygen content fluctuation

Abstract

A transition door capable of reducing indoor and outdoor oxygen content fluctuation relates to a double-door-body structure, and is characterized in that an inner door (4) is arranged at a doorway of a building room wall (7), the periphery of the inner door is sealed with an inner door frame (6), a door opening (11) is added outwards along the inner door, an outer door (12) is mounted at an outer door frame (13) at an outer opening of the door opening, the periphery of the outer door is sealed with the outer door frame, and an inner connecting seat (5) is arranged at the upper part of the outer side of the inner door; an outer connecting base (10) is arranged on the upper portion of the inner side of the outer door, and the two ends of the door closing elastic brace are connected with the inner connecting base and the outer connecting base respectively. A transition space (9) is formed by a door opening between the inner door and the outer door; the door opening and the outer door are arranged on the outer side of the inner door, the inner door and the outer door are both in a normally-closed state through the door closing elastic brace, and fluctuation of indoor and outdoor oxygen content obtained through the closed transition space of the inner door, the door opening and the outer door is reduced.

Description

Technical Field

[0001] This invention relates to a double-door structure, and more specifically, to a transition door that reduces fluctuations in indoor and outdoor oxygen levels. Background Technology

[0002] In various buildings constructed in high-altitude areas of the Qinghai-Tibet Plateau, oxygen generators or oxygen cylinders are typically used to increase the oxygen content in the environment in order to help people suffering from altitude sickness adapt as quickly as possible and to help workers recover their strength quickly, so that people can have a low-altitude environment during work, rest, study or other activities. However, people entering and leaving the house or accidentally forgetting to close the door can significantly reduce the indoor oxygen content, making the indoor oxygen content close to that of the outdoors, which further leads to large fluctuations in the indoor oxygen content, making it difficult to concentrate on work. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies. This invention discloses a transition door that reduces fluctuations in indoor and outdoor oxygen levels. By setting a doorway and an outer door on the outside of the inner door, and using a door-closing elastic strip to keep both the inner and outer doors in a normally closed state, the fluctuations in indoor and outdoor oxygen levels are reduced through the sealed transition space of the inner door, doorway, and outer door.

[0004] In order to achieve the objective of this invention, this application discloses the following technical solution:

[0005] A transition door for reducing fluctuations in indoor and outdoor oxygen levels includes an inner door, a doorway, an outer door, an inner connecting seat, an outer connecting seat, and a closing elastic strip. The inner door is installed at the entrance of a room in a building, and its perimeter is tightly fitted to an inner door frame. A doorway is added outwards along the inner door. The outer door is installed on the outer door frame at the outer opening of the doorway, and its perimeter is tightly fitted to the outer door frame. An inner connecting seat is located on the upper outer side of the inner door, and an outer connecting seat is located on the upper inner side of the outer door. The two ends of the closing elastic strip are connected to the inner and outer connecting seats, respectively. A transition space is formed by the doorway between the inner and outer doors.

[0006] The transition door for reducing fluctuations in indoor and outdoor oxygen levels has an inner connecting seat on the upper outer side of the inner door, and an outer connecting seat on the upper inner side of the outer door, which is located on the upper inner side of the outer door.

[0007] The transition door for reducing fluctuations in indoor and outdoor oxygen levels has an inner and outer connecting seat with the same structure. The inner connecting seat includes an adjusting rod, a fixing plate, a smooth rod, and an adjusting tube. One end of the adjusting rod is fixedly connected to the middle of the fixing plate. The external thread from the middle of the adjusting rod to the other end is connected to the internal thread on one end face of the adjusting tube. A smooth hole and a diameter reduction hole are sequentially provided between the internal thread of the adjusting tube and the other end face. The diameter expansion ring at one end of the smooth rod is located in the smooth hole, and the end of the smooth rod closer to the diameter reduction hole is located in the diameter reduction hole. A hanging hole is provided at the other end of the smooth rod.

[0008] The transition door that reduces fluctuations in indoor and outdoor oxygen levels has a semi-circular flat plate at the other end of the light rod, with a hanging hole located in the middle of the semi-circular flat plate.

[0009] The transition door that reduces fluctuations in indoor and outdoor oxygen levels includes a door closing elastic strip, which is either a door closing spring or a rubber strip.

[0010] The aforementioned transition door for reducing fluctuations in indoor and outdoor oxygen levels has an inner door hinged to the inner door frame on one side, and an inner door lock on the other side, with the lock tongue engaging with the inner door frame.

[0011] The aforementioned transition door for reducing fluctuations in indoor and outdoor oxygen levels has one side of the outer door hinged to the outer door frame, and the other side of the outer door is equipped with an outer door lock, the latch of which engages with the outer door frame.

[0012] Based on the above disclosure, the beneficial effects of the present invention are:

[0013] The transition door for reducing fluctuations in indoor and outdoor oxygen levels described in this invention further seals the gap between the original inner door and the inner door frame with a sealing rubber strip. An opening made of glass, wood, or other materials meeting airtightness requirements is added to the outside of the original frame. An outer door frame and outer door are installed at the opening of the opening. A closing spring keeps both the inner and outer doors closed, preventing forgetting to close the door or ensuring it is not closed properly. Adjustable tubes on the inner and outer connecting seats allow for adjustment of the closing spring's tension and ease of installation. This invention, by creating an opening and an outer door outside the inner door and using a closing elastic strip to keep both doors normally closed, reduces fluctuations in indoor and outdoor oxygen levels through the sealed transition space created by the inner door, the opening, and the outer door. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the connector structure of the present invention;

[0016] Figure 3 This is a three-dimensional structural diagram of the regulating tube of the present invention;

[0017] In the diagram: 1. Interior; 2. Lock tongue; 3. Inner door lock; 4. Inner door; 5. Inner connecting seat; 6. Inner door frame; 7. Room wall; 8. Door closing spring; 9. Transition space; 10. Outer connecting seat; 11. Doorway; 12. Outer door; 13. Outer door frame; 14. Outer door lock; 15. Reduction hole; 16. Smooth hole; 17. Internal thread; 18. Adjusting tube; 19. Hanging hole; 20. Semi-circular plate; 21. Smooth rod; 22. Expansion ring; 23. External thread; 24. Adjusting rod; 25. Fixing plate. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the inventive objectives, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of possible implementations of the technical solutions of the present invention.

[0019] Combined with appendix Figures 1-3 The transition door described herein, designed to reduce fluctuations in indoor and outdoor oxygen levels, includes an inner door 4, a doorway 11, an outer door 12, an inner connecting seat 5, an outer connecting seat 10, and a door-closing elastic strip. The inner door 4 is installed at the entrance of the building's room wall 7. One side of the inner door 4 is hinged to an inner door frame 6, and the other side of the inner door 4 is equipped with an inner door lock 3. The latch 2 of the inner door lock 3 engages with the inner door frame 6. The inner door 4 is tightly fitted to the inner door frame 6 on all four sides. A doorway 11 is added outwards along the inner door 4. The outer door 12 is installed on an outer door frame 13 at the outer opening of the doorway 11. One side of the outer door 12 is connected via... The hinge is hinged to the outer door frame 13. An outer door lock 14 is provided on the other side of the outer door 12. The latch of the outer door lock 14 engages with the outer door frame 13. The outer door 12 is tightly fitted to the outer door frame 13 on all sides. The inner connecting seat 5 on the upper outer side of the inner door 4 is located on one side of the upper outer side of the inner door 4. The outer connecting seat 10 on the upper inner side of the outer door 12 is located on one side of the upper inner side of the outer door 12. The hooks at both ends of the closing spring 8 are respectively connected to the hanging holes 19 of the inner connecting seat 5 and the hanging holes 19 of the outer connecting seat 10. The door opening 11 between the inner door 4 and the outer door 12 forms a transition space 9.

[0020] Combined with appendix Figure 1 , 2 Alternatively, the inner connecting seat 5 and the outer connecting seat 10 have the same structure. The inner connecting seat includes an adjusting rod 24, a fixing plate 25, a smooth rod 21, and an adjusting tube 18. One end of the adjusting rod 24 is fixedly connected to the middle of the fixing plate 25. The external thread 23 from the middle of the adjusting rod 24 to the other end is connected to the internal thread 17 on the end face of one end of the adjusting tube 18. A smooth hole 16 and a diameter reduction hole 15 are sequentially provided between the internal thread 17 and the end face of the other end of the adjusting tube 18. The diameter expansion ring 22 at one end of the smooth rod 21 is located in the smooth hole 16, and the end of the smooth rod 21 near the other end is located in the diameter reduction hole 15. A semi-circular plate 20 is provided at the other end of the smooth rod 21, and a hanging hole 19 is provided in the middle of the semi-circular plate 20.

[0021] Implement the transition door described in this invention to reduce fluctuations in indoor and outdoor oxygen levels, combined with the attached... Figures 1 to 3First, the original inner door 4 is sealed. (If the original inner door 4 meets the sealing requirements, this requirement does not apply.) Then, door openings 11 made of aluminum alloy glass, wood, or other materials are installed on the upper part and sides of the inner door frame 6 of the inner door 4. The outer door frame 13 and outer door 12 are installed at the outer opening of the door opening 11. The distance between the inner door 4 and the outer door 12 should be 80 cm or more. The fixing plate 25 of the inner connecting seat 5 is fixed to the upper part of the hinge side on the outer side of the inner door 4 using screws. Similarly, the fixing plate 25 of the outer connecting seat 10 is fixed to the upper part of the hinge side on the inner side of the outer door 12 using other screws. Then, the two adjusting tubes 18 are respectively fitted onto the two light On rod 21, the hooks at both ends of the closing spring 8 are connected to the hanging holes 19 on the semicircular plates 20 of the two smooth rods 21 respectively. Then, the internal thread 17 of one of the adjusting tubes 18 is connected to the external thread 23 of the adjusting rod 24 of the inner connecting seat 5, and the internal thread 17 of the other adjusting tube 18 is connected to the external thread 23 of the adjusting rod 24 of the outer connecting seat 10. The installation is completed. During use, the closing spring 8 opens the inner door 4 or the outer door 12 separately. When the inner door 4 and the outer door 12 need to be kept open, the adjusting tube 18 of either the inner connecting seat 5 or the outer connecting seat 10 can be removed, which can realize the needs of moving materials to the indoor 1 or to the outdoor area, and other needs that require the door to be kept open for a long time.

[0022] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the scope of protection of the present invention. These equivalent forms also fall within the scope defined by the appended claims.

[0023] The parts of this invention not described in detail are prior art.

Claims

1. A transition door for reducing fluctuations in indoor and outdoor oxygen levels, comprising an inner door (4), a doorway (11), an outer door (12), an inner connecting seat (5), an outer connecting seat (10), and a door closing elastic strip, characterized in that: in An inner door (4) is installed at the doorway of the building room wall (7). The inner door (4) is closed with the inner door frame (6) on all sides. A door opening (11) is added outward along the inner door (4). An outer door (12) is installed on the outer door frame (13) at the outer opening of the door opening (11). The outer door (12) is closed with the outer door frame (13) on all sides. An inner connecting seat (5) is provided on the upper part of the outer side of the inner door (4). An outer connecting seat (10) is provided on the upper part of the inner side of the outer door (12). The two ends of the door closing elastic pull strip are connected to the inner connecting seat (5) and the outer connecting seat (10) respectively. A transition space (9) is formed by the door opening (11) between the inner door (4) and the outer door (12).

2. The transition door for reducing fluctuations in indoor and outdoor oxygen levels according to claim 1, characterized in that: The inner connecting seat (5) on the upper outer side of the inner door (4) is located on one side of the upper outer side of the inner door (4); the outer connecting seat (10) on the upper inner side of the outer door (12) is located on one side of the upper inner side of the outer door (12).

3. The transition door for reducing fluctuations in indoor and outdoor oxygen levels according to claim 1 or 2, characterized in that: The inner connecting seat (5) and the outer connecting seat (10) have the same structure. The inner connecting seat includes an adjusting rod (24), a fixing plate (25), a smooth rod (21) and an adjusting tube (18). One end of the adjusting rod (24) is fixedly connected to the middle of the fixing plate (25). The external thread (23) from the middle of the adjusting rod (24) to the other end is connected to the internal thread (17) on the end face of one end of the adjusting tube (18). A smooth hole (16) and a diameter reduction hole (15) are provided in sequence between the internal thread (17) of the adjusting tube (18) and the end face of the other end. The diameter expansion ring (22) at one end of the smooth rod (21) is located in the smooth hole (16). The end of the smooth rod (21) near one end is located in the diameter reduction hole (15). A hanging hole (19) is provided at the other end of the smooth rod (21).

4. The transition door for reducing fluctuations in indoor and outdoor oxygen levels according to claim 3, characterized in that: A semi-circular plate (20) is provided at the other end of the smooth rod (21), and a hanging hole (19) is provided in the middle of the semi-circular plate (20).

5. The transition door for reducing fluctuations in indoor and outdoor oxygen levels according to claim 1, characterized in that: The door closing elastic strip is a door closing spring (8) or a rubber strip.

6. The transition door for reducing fluctuations in indoor and outdoor oxygen levels according to claim 1, characterized in that: the inner... One side of the door (4) is hinged to the inner door frame (6) via a hinge, and the other side of the inner door (4) is provided with an inner door lock (3), the latch (2) of the inner door lock (3) engages with the inner door frame (6).

7. The transition door for reducing fluctuations in indoor and outdoor oxygen levels according to claim 1, characterized in that: The outer door (12) is hinged to the outer door frame (13) on one side by a hinge, and an outer door lock (14) is provided on the other side of the outer door (12), and the latch of the outer door lock (14) engages with the outer door frame (13).

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