Airbag type closed door

Abstract

The present invention relates to the field of building closing devices, and specifically to an airbag type airtight door, whose structure includes a door frame and a door leaf, an airbag assembly is arranged in the door frame, the airbag assembly includes an air storage bag and an air strip, the air strip surrounds the door frame, the door frame has a frame side wall and the air storage bag is arranged on the frame side wall, the door leaf has a door side wall and a delayed contact assembly is arranged on the side wall, the delayed contact assembly includes a delayed trigger mechanism and a pressure plate, the pressure plate is used to squeeze the airbag, the present invention is provided with an airbag assembly in the door frame, the air storage bag is squeezed when the door leaf is about to close to drive the air strip to expand, thereby reducing the obstruction of the air strip to the door leaf during the closing process of the door leaf, and the delayed contact assembly is triggered to enter energy storage when the door leaf is in the process of closing the door, and the delayed contact assembly is triggered to squeeze the air storage bag only when the door leaf is completely closed, on the basis of avoiding the obstruction of the air strip to the door leaf during the closing process, the obstruction of the air strip to the moment when the door leaf is about to close due to excessive expansion of the air strip is further avoided.

Description

Technical Field

[0001] The invention relates to the field of building closing devices, in particular to an airbag type airtight door. Background Art

[0002] The doors used in houses are generally divided into entrance doors and interior doors based on their uses. Entrance doors are usually security doors, which serve as devices to separate the inside and outside spaces of the house to protect the personal and property safety of the residents.

[0003] With the increase in usage demand, the demand for sealing and sound insulation of entrance doors continues to increase. Traditional anti-theft doors have a gap between the door leaf and the door frame, resulting in poor sound insulation effect and unable to effectively block the noise outside the door. The existing door body is improved on this basis by installing sound insulation strips or sealing rubber rings around the door frame to achieve the closed sound insulation function of the door body. However, the pre-expanded sound insulation strips or sealing rubber rings are prone to produce opposite elastic force on the door leaf when the door leaf is closed, and the door leaf can only stabilize the closed state when the door leaf is closed after the door lock is buckled on the door frame. This makes the door leaf not completely closed and the door lock has not been buckled on the door frame. The sound insulation strip or sealing rubber ring often pops the door leaf out, causing obstacles to closing the door and affecting the closing of the door leaf. Summary of the invention

[0004] In view of the above problems, the present invention provides an airbag-type airtight door, the structure of which includes a door frame and a door leaf mounted on the door frame by hinges, the door frame having a door strip at the bottom, an airbag assembly being arranged in the door frame and abutting against the door leaf closed in the door frame; an inner circle of the door frame extending inwardly with a circle of inwardly retracted retaining edge, the airbag assembly including an air storage bag and an air strip, the air storage bag storing gas and connected to the air strip, the air strip surrounding the front end of the inwardly retracted retaining edge, the air strip abutting against the door leaf in a closed state in the door frame; a side of the door frame connected to the door leaf by a hinge has a frame side wall, and the frame side wall is located at At the front end of the retracted retaining edge, a door side wall is provided on one side of the door leaf which is connected to the door frame by a hinge, the air bag is arranged on the frame side wall and is connected to the air strip by an air connecting piece, the door side wall of the door leaf which has a closing tendency on the door frame gradually approaches the air bag; the air strip is in contact with at least one end face of the door leaf; a delayed contact component is provided on the door side wall of the door leaf, the delayed contact component comprises a delayed trigger mechanism and a pressure plate which is driven after being triggered by the delayed trigger mechanism, the pressure plate is used to contact with the air bag to squeeze the air bag, and the delayed trigger mechanism works in the process when the door leaf has a closing tendency on the door frame.

[0005] Furthermore, the air strip is laid around the door frame, and the laying range is located in at least one area on the front end surface of the retracted stop edge and on the side wall of the door frame at the front end of the retracted stop edge.

[0006] Furthermore, a accommodating cavity recessed into the door is provided on the door side wall, the delayed contact assembly is installed in the accommodating cavity, the pressure plate is swingably installed in the accommodating cavity and the swing axis is vertically arranged, and the swing axis of the pressure plate is located at the vertical edge of the door leaf; a yield spring is provided on the pressure plate, one end of the yield spring is installed on the pressure plate and the other end is against the inner wall of the accommodating cavity, the yield spring provides the pressure plate with elastic force to drive the pressure plate to swing into the accommodating cavity, and the delayed trigger mechanism is used to drive the pressure plate to swing toward the outside of the accommodating cavity and resist against the air bag.

[0007] Furthermore, the delayed trigger mechanism includes a delay component and a rear touch pressure seat installed in a mounting frame, the mounting frame is provided with a plurality of guide columns, the delay component and the rear touch pressure seat are slidably mounted on the guide columns, a main pressure spring is provided between the delay component and the mounting frame, the main pressure spring provides the delay component with elastic force to move toward the outside of the accommodating chamber; the rear touch pressure seat is engaged with the pressure plate, and the rear touch pressure seat drives the pressure plate to swing by sliding on the guide columns; the side wall of the frame is provided with a top tooth, the delay component contacts with the top tooth during the closing and swinging process of the door leaf into the door frame, the delay component is blocked by the top tooth and moves into the accommodating chamber during the closing process of the door leaf, and the mounting frame is provided with a reversing stopper on the sliding path of the delay component for releasing the delay component from the abutting state with the top tooth, and the delay component moves toward the outside of the accommodating chamber in cooperation with the rear touch pressure seat by releasing the abutting state with the top tooth.

[0008] Furthermore, the delay component includes a sliding seat slidably mounted on the guide column and a bevel pin vertically slidably mounted in the sliding seat, a return spring is provided between the bevel pin and the sliding seat for providing an upward elastic force for the bevel pin; a bevel is provided at the top end of the bevel pin and the bevel points to the reversing stopper, the bevel pin in the delay component that slides on the guide column driven by the top tooth is abutted against the reversing stopper, and the bevel pin then moves downward on the sliding seat; a mating groove is provided in the middle of the rear contact pressure seat for the bottom of the bevel pin to be embedded.

[0009] Furthermore, the horizontal height of the position where the reversing stopper contacts the bevel pin is lower than the bottom of the position where the top tooth contacts the bevel pin, and the length of the bottom of the bevel pin extending out of the slide seat is greater than the spacing between the slide seat and the rear contact pressure seat; the length of the matching groove of the rear contact pressure seat in the axial direction of the guide column is greater than the sum of the spacing from the position where the reversing stopper first contacts the bevel pin to the back of the bevel pin and the width of the bottom of the bevel pin.

[0010] Furthermore, two clamping pins are provided at the bottom end of the rear touch pressure seat, and a driving frame is provided on one side of the pressure plate close to the inner side of the accommodating cavity. The driving frame is provided with a frame plate extending upward on the back side of the pressure plate, and the clamping pins are clamped on the frame plate.

[0011] Furthermore, the position of the air bag abutting against the pressure plate is located between the projection positions of the swing axis of the pressure plate and the clamping pin of the rear contact pressure seat on the side wall of the frame; the distance between the position of the air bag on the side wall of the frame and the projection of the clamping pin on the side wall of the frame is greater than the distance between the air bag and the projection of the swing axis on the side wall of the frame.

[0012] Furthermore, the cross section of the air strip is bent and the laying range extends to both sides to the front end surface of the retracted retaining edge and the side wall of the door frame at the front end of the retracted retaining edge.

[0013] Furthermore, the air strip is folded forward and backward, and the folded part close to the inner wall of the door frame is connected to the inner wall of the door frame as a fixed part, while the folded part on the outside serves as a movable part for expanding outward, and the air storage bag is connected to the fixed part of the air strip through an air connecting piece; the expanding part of the air strip has a tendency to roll driven by the movable door leaf.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides an air bag assembly in the door frame, provides a flat air strip around the door frame and provides an air storage bag on the side where the door frame hinge is located. When the door leaf is about to be closed, the air storage bag is squeezed to drive the air strip to expand, thereby reducing the obstruction of the air strip to the door leaf during the closing process of the door leaf, and avoiding the situation that the door leaf is not completely closed and is bounced open;

[0016] Furthermore, in the present embodiment, a delayed contact assembly is provided on the door leaf, which is triggered to store energy when the door leaf is in the process of closing. The delayed contact assembly is triggered to squeeze the air storage bag only when the door leaf is completely closed. This not only avoids obstruction of the door leaf by the air bar during the closing process, but also further avoids obstruction of the door leaf by excessive expansion due to the air bar when it is about to close.

[0017] Moreover, in the present invention, the cross section of the air strip is bent and the laying range of the air strip is extended to both sides to the front end surface of the retracted retaining edge and the side wall of the door frame at the front end of the retracted retaining edge, thereby obtaining a better sound insulation effect, and the extended contact component is used to prevent the door leaf from being hindered by the friction of the air strip on the side wall of the door frame at the front end of the retracted retaining edge during the closing process;

[0018] In the present invention, a pressure plate is provided and a yield spring is used to pre-swing the pressure plate into the accommodating cavity of the door leaf, thereby leaving a certain space on the side wall of the door, so that the air bag can enter this space during the closing process of the door leaf. At the same time, the top teeth on the door frame cooperate with the delayed trigger mechanism to store energy during the closing process. After the door leaf is completely closed, the delayed trigger mechanism is triggered to drive the pressure plate to squeeze the air bag, thereby avoiding unnecessary pre-pressure on the air bag and causing the air strip to affect the closing door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the overall structure of an airbag type airtight door of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the door frame and door leaf in cooperation with the airbag assembly of the present invention, as well as a three-dimensional partial schematic diagram of the extended contact assembly in the door leaf.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the airbag assembly of the present invention and a partial schematic diagram of three embodiments of the air strip.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the extended contact component of the present invention.

[0023] Figure 5 It is a schematic diagram of the top structure of the extended contact assembly of the present invention and a partial schematic diagram of the moving state.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the airbag assembly of the present invention, a partial schematic diagram of an embodiment of the air strip, and a partial state diagram of the embodiment.

[0025] In the figure: 1. Door frame; 2. Door leaf; 3. Airbag assembly; 4. Extended contact assembly;

[0026] 11. hinge; 12. top tooth; 1a. retracted stop edge; 1b. door strip; 1c. frame side wall; 2a. door side wall; 2b. accommodating cavity; 31. air storage bag; 32. air strip; 33. air connection part; 41. pressure plate; 42. mounting frame; 43. guide column; 44. delay part; 45. main pressure spring; 46. reversing stopper; 47. rear contact pressure seat;

[0027] 32a, expansion part; 32b, fixed part; 411, yielding spring; 412, driving frame; 441, sliding seat; 442, oblique head pin; 443, return spring; 47a, matching groove; 471, clamping pin. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Examples, such as Figure 1-Figure 6As shown: The present invention provides an airbag sealed door, which is usually used as an external anti-theft door of a house. Its structure includes a door frame 1 and a door leaf 2 installed on the door frame 1 through hinges. The door leaf 2 swings on the door frame 1 through the hinges to perform opening and closing operations. The bottom of the door frame 1 in this embodiment has a door strip 1b, that is, the door frame 1 is a four-sided surrounding structure, and the four sides of the inner circle of the door frame 1 extend inwardly with a circle of inward shrinking blocking edges 1a. In this embodiment, an airbag assembly 3 is arranged in the door frame 1 and abuts against the door leaf 2 closed in the door frame 1, and is used to block the gap between the door leaf 2 and the door frame 1;

[0030] As for the airbag assembly 3, the airbag assembly 3 includes an air storage bag 31 and an air strip 32. The air storage bag 31 stores gas and is connected to the air strip 32. The air strip 32 is laid around the door frame 1. It is known that when not in use, the air strip 32 is flat with a certain amount of air, and the air storage bag 31 is in a state of internal air storage and expansion; the side of the door frame 1 connected to the door leaf 2 through the hinge 11 has a frame side wall 1c and the frame side wall 1c is located at the front end of the retracted retaining edge 1a, the air storage bag 31 is arranged on the frame side wall 1c and is connected to the air strip 32 through the air connecting piece 33, and the air The strip 32 surrounds the front end of the retracted retaining edge 1a and abuts against the door leaf 2 in a closed state in the door frame 1. The door leaf 2 has a door side wall 2a on one side connected to the door frame 1 through the hinge 11. The door side wall 2a of the door leaf 2 with a closing tendency on the door frame 1 gradually approaches the air storage bag 31. The door leaf 2 squeezes the air storage bag 31 during the closing process, so that the gas in the air storage bag 31 is transferred to the air strip 32 through the air connecting piece 33 to expand the air strip 32. The air strip 32 on the door frame 1 contacts at least one end surface of the door leaf 2, so as to block the gap.

[0031] In this embodiment, the air connecting member 33 is a pipe and is made of rubber material like the air storage bag 31 and the air strip 32 .

[0032] For the further setting of the airbag assembly 3, the laying range of the adopted air strip 32 is located in at least one area on the front end surface of the retracted stop edge 1a and on the side wall of the door frame 1 at the front end of the retracted stop edge 1a. The traditional sound insulation strip is usually installed on the front end surface of the retracted stop edge 1a to generate an elastic force on the door leaf 2 in the opposite direction of closing the door. In this embodiment, the cross-section of the air strip 32 is bent, and the laying range extends to both sides to the front end surface of the retracted stop edge 1a and the side wall of the door frame 1 at the front end of the retracted stop edge 1a, that is, it involves the contact surfaces of the two door frames 1 and the door leaf 2 at the same time.

[0033] To this end, in the present embodiment, a delayed contact assembly 4 is provided on the door side wall 2a of the door leaf 2, and a receiving cavity 2b recessed into the door is provided on the door side wall 2a, and the delayed contact assembly 4 is installed in the receiving cavity 2b, and the delayed contact assembly 4 includes a delayed trigger mechanism and a pressure plate 41 driven after being triggered by the delayed trigger mechanism, and the pressure plate 41 is swingably installed in the receiving cavity 2b and the swing axis is vertically arranged, and the delayed trigger mechanism works in the process that the door leaf 2 has a closing tendency on the door frame 1, and continues until the closed state, therefore, it can be known that the purpose of the delayed trigger mechanism is to start during the closing process of the door leaf 2 and to be triggered after the door leaf 2 is closed, so as to drive the pressure plate 41 to contact with the air storage bag 31 to squeeze the air storage bag 31 after the door leaf 2 is closed, thereby reducing the elastic support and side friction between the expansion of the air strip 32 and the door leaf 2 during the closing process;

[0034] As for the delayed contact assembly 4, the swing axis of the pressure plate 41 is located at the vertical edge of the door leaf 2, and a yield spring 411 is provided on the pressure plate 41, one end of the yield spring 411 is installed on the pressure plate 41 and the other end is against the inner wall of the accommodating chamber 2b, and the yield spring 411 provides the pressure plate 41 with elastic force to drive the pressure plate 41 to swing into the accommodating chamber 2b, so that the swing axis of the pressure plate 41, the connection point between the pressure plate 41 and the yield spring 411, and the connection point between the yield spring 411 and the accommodating chamber 2b form a triangle, and the position given up by the pressure plate 41 swinging into the accommodating chamber 2b is used to accommodate the air bag 31 during the door closing process, until the door leaf 2 is closed on the door frame 1, the delayed trigger mechanism is triggered, and the delayed trigger mechanism is used to drive the pressure plate 41 to swing toward the outside of the accommodating chamber 2b and resist against the air bag 31, so as to squeeze the gas in the air bag 31 into the gas strip 32;

[0035] To this end, for the delayed trigger mechanism, the delayed trigger mechanism includes a delay component 44 and a rear touch pressure seat 47 installed in the mounting frame 42, a plurality of guide columns 43 are provided in the mounting frame 42, the guide columns 43 extend from the door side to the inside of the door leaf 2, the delay component 44 and the rear touch pressure seat 47 are slidably installed on the guide columns 43, a main pressure spring 45 is provided between the delay component 44 and the mounting frame 42, the main pressure spring 45 provides the delay component 44 with elastic force to move toward the outside of the accommodating cavity 2b, and the rear touch pressure seat 47 is engaged with the pressure plate 41, and the rear touch pressure seat 47 drives the pressure plate 41 to swing by sliding on the guide columns 43;

[0036] For the delay component 44, a top tooth 12 is provided on the frame side wall 1c, and the delay component 44 contacts the top tooth 12 during the closing swing of the door leaf 2 into the door frame 1. The delay component 44 is blocked by the top tooth 12 and moves into the accommodating chamber 2b during the closing process of the door leaf 2. The delay component 44 includes a sliding seat 441 slidably mounted on the guide column 43 and a bevel pin 442 vertically slidably mounted in the sliding seat 441. A return spring 443 is provided between the bevel pin 442 and the sliding seat 441 for providing an upward elastic force for the bevel pin 442. During the closing process of the door leaf 2, the bevel pin 442 contacts the top tooth 12, and is blocked by the top tooth 12 to move into the accommodating chamber 2b and squeeze the main The main pressure spring 45 is pressed, and then the mounting frame 42 is provided with a reversing stopper 46 on the sliding path of the delay component 44 for releasing the delay component 44 from the abutting state with the top tooth 12. The reversing stopper 46 is specifically in the shape of a rod, and the top of the oblique head pin 442 is provided with an inclined surface and the inclined surface points to the reversing stopper 46. The oblique head pin 442 in the delay component 44 that is driven by the top tooth 12 and slides on the guide column 43 abuts against the reversing stopper 46, thereby causing the oblique head pin 442 to move downward on the slide seat 441. After descending a certain distance, the top end of the oblique head pin 442 descends below the top tooth 12, and the delay component 44 releases the abutting state with the top tooth 12 and is driven by the compressed main pressure spring 45 to pop out of the accommodating chamber 2b;

[0037] It should be noted that those skilled in the art can set the length of the top teeth 12 according to the requirements, so that when closing the door, the delay component 44 can contact the top teeth 12 before approaching the door frame 1. In this embodiment, the length of the top teeth 12 is less than the thickness of the door leaf 2, so that the slot of the side accommodating cavity 2b can be directly opened on the side wall 2a of the door to allow the top to be inserted without affecting the inner end surface of the door.

[0038] At the same time, for the rear touch pressure seat 47, a matching groove 47a is provided in the middle of the rear touch pressure seat 47 for the bottom of the bevel pin 442 to be embedded, and the bottom of the bevel pin 442 moving downward is embedded in the matching groove 47a. When the top end of the bevel pin 442 drops below the top tooth 12 and is driven by the compressed main pressure spring 45 to pop out of the accommodating chamber 2b, the top end of the bevel pin 442 presses against the bottom surface of the top tooth 12 and moves outward. Therefore, the height of the bevel pin 442 moving downward remains unchanged, which will drive the rear touch pressure seat 47 to move toward the outside of the accommodating chamber 2b. The movement of the rear touch pressure seat 47 drives the pressure plate 41 to swing outside the accommodating chamber 2b and resist against the air bag 31, thereby squeezing the gas in the air bag 31 into the air strip 32.

[0039] It should be noted that, first, the horizontal height of the position where the reversing stopper 46 contacts the bevel pin 442 is lower than the bottom of the position where the top tooth 12 contacts the bevel pin 442, so that the descending bevel pin 442 can descend to the bottom of the top tooth 12 on the basis of abutting against the reversing stopper 46; then, the length of the bottom of the bevel pin 442 extending out of the slide seat 441 is greater than the spacing between the slide seat 441 and the rear contact pressure seat 47, thereby ensuring that the bevel pin 442 and the rear contact pressure seat 47 can achieve effective cooperation; finally, the length of the cooperation groove 47a of the rear contact pressure seat 47 in the axial direction of the guide column 43 is greater than the spacing from the position where the reversing stopper 46 first contacts the bevel pin 442 to the back of the bevel pin 442 and the width of the bottom of the bevel pin 442, because the bevel pin 442 is driven by the top tooth 12 to move horizontally during the vertical movement due to the obstruction of the reversing stopper 46, so the distance of the horizontal movement will be greater than the width of the bevel pin 442.

[0040] In this embodiment, two clamping pins 471 are provided at the bottom end of the rear touch pressure seat 47, and a driving frame 412 is provided on the side of the pressure plate 41 close to the inner side of the accommodating chamber 2b, and the driving frame 412 is provided with a frame plate extending upward on the back side of the pressure plate 41, and the clamping pins 471 are clamped on the frame plate, and the position of the air bag 31 that is against the pressure plate 41 is located between the projection positions of the swing axis of the pressure plate 41 and the clamping pins 471 of the rear touch pressure seat 47 on the frame side wall 1c, and the position of the air bag 31 on the frame side wall 1c is greater than the distance between the air bag 31 and the projection of the swing axis on the frame side wall 1c, thereby forming a labor-saving lever structure, so that the main pressure spring 45 can better drive the pressure plate 41 to squeeze the air bag 31.

[0041] When closing the door, the door leaf 2 swings toward the door frame 1. When it swings to the point where it is about to approach the door frame 1, the delay component 44 in the door leaf 2 contacts the top tooth 12, and the oblique head pin 442 contacts the top tooth 12. As the door leaf 2 is further closed, the oblique head pin 442 is blocked by the top tooth 12 and moves into the accommodating chamber 2b and squeezes the main pressure spring 45. At this time, the pressure plate 41 is driven by the yield spring 411 to swing into the accommodating chamber 2b, leaving a certain space on the door side wall 2a to avoid contacting the air storage bag 31, and the rear contact pressure seat 47 is driven by the pressure plate 41 to stop in the accommodating chamber 2b.

[0042] As the door leaf 2 is further closed, the inclined pin 442 driven by the top tooth 12 and sliding on the guide column 43 abuts against the reversing stopper 46, causing the inclined pin 442 to move downward on the slide seat 441. As the inclined pin 442 descends, the bottom end of the inclined pin 442 is inserted into the rear contact seat 47. When the door leaf 2 is officially closed on the door frame 1, the top end of the inclined pin 442 descends below the top tooth 12, releasing the abutment state with the top tooth 12 and driving the compressed main pressure spring 45 to move toward the accommodating chamber 2. b pops out, and at the same time, the top end of the oblique head pin 442 presses against the bottom surface of the top tooth 12 and moves outward, driving the rear touch pressure seat 47 to cooperate and move toward the outside of the accommodating chamber 2b, and the rear touch pressure seat 47 clamps the driving frame 412 through the clamping pin 471, thereby driving the pressure plate 41 to swing out of the accommodating chamber 2b and abut against the air storage bag 31, squeezing the gas in the air storage bag 31 into the air strip 32, thereby triggering the air bag assembly 3 only after the door leaf 2 is completely closed, avoiding premature expansion of the air strip 32 and affecting the closing of the door leaf 2;

[0043] After the door is opened, the gas strip 32 recovers its flat shape through its own elastic contraction and squeezes the gas back into the air bag 31 at the same time.

[0044] It can be known that the elastic force of the main pressure spring 45 is greater than the elastic force of the air storage bag 31. In the present embodiment, the connection point between the yield spring 411 and the inner wall of the accommodating chamber 2b is arranged on the same plane as the swing axis and the plane is parallel to the side of the door. Therefore, when the pressure plate 41 is driven by the main pressure spring 45 to swing outward to the limit, the force direction of the yield spring 411 on the pressure plate 41 is parallel to the plate body of the pressure plate 41, thereby reducing the reverse direction resultant force generated by the yield spring 411 on the main pressure spring 45.

[0045] Moreover, in the present embodiment, the air strip 32 is folded forward and backward and the folded portion close to the inner wall of the door frame 1 is connected to the inner wall of the door frame 1 as a fixed portion 32b, while the outer folded portion serves as a movable portion for expanding outward, and the air storage bag 31 is connected to the fixed portion 32b of the air strip 32 through an air connecting piece 33. Due to the existence of the folded portion, the expanding portion 32a of the air strip 32 has a tendency to roll driven by the movable door leaf 2, specifically rubbing and rolling, thereby giving the air strip 32 a margin of activity when the door leaf 2 is opened and closed, thereby avoiding large friction between the door leaf 2 and the expanded air strip 32 when opening and closing, and extending the life of the air strip 32.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An airbag sealed door, comprising a door frame and a door leaf mounted on the door frame through hinges, characterized in that: The bottom of the door frame is provided with a door strip, and an airbag assembly is arranged in the door frame and abuts against the door leaf closed in the door frame; The inner circle of the door frame extends inwardly to form a circle of inwardly retracted retaining edge, the airbag assembly includes an air storage bag and an air strip, the air storage bag stores gas and is connected to the air strip, the air strip surrounds the front end of the inwardly retracted retaining edge, and the air strip abuts against the door leaf in a closed state in the door frame; The door frame has a frame side wall on one side connected to the door leaf by a hinge, and the frame side wall is located at the front end of the retracted stop edge; the door leaf has a door side wall on one side connected to the door frame by a hinge; the air storage bag is arranged on the frame side wall and connected to the air strip through an air connection piece; the door side wall of the door leaf with a closing tendency on the door frame gradually approaches the air storage bag; The air strip is in contact with at least one end surface of the door leaf; A delayed contact assembly is provided on the door side wall of the door leaf, and the delayed contact assembly includes a delayed trigger mechanism and a pressure plate driven after being triggered by the delayed trigger mechanism, the pressure plate is used to contact the air bag to squeeze the air bag, and the delayed trigger mechanism works when the door leaf has a closing tendency on the door frame.

2. The airbag sealed door according to claim 1, characterized in that: The air strip is laid around the door frame, and the laying range is located on at least one area of ​​the front end surface of the retracted retaining edge and the side wall of the door frame at the front end of the retracted retaining edge.

3. An airbag sealed door according to claim 1 or 2, characterized in that: The door side wall is provided with a receiving cavity recessed into the door, the extended contact assembly is installed in the receiving cavity, the pressure plate is swingably installed in the receiving cavity and the swing axis is vertically arranged, and the swing axis of the pressure plate is located at the vertical edge of the door leaf; The pressure plate is provided with a yield spring, one end of which is installed on the pressure plate and the other end is against the inner wall of the accommodating cavity. The yield spring provides the pressure plate with elastic force to drive the pressure plate to swing into the accommodating cavity, and the delayed trigger mechanism is used to drive the pressure plate to swing toward the outside of the accommodating cavity and against the air bag.

4. The airbag sealed door according to claim 3, characterized in that: The time-delay trigger mechanism comprises a delay component and a rear touch-pressure seat installed in a mounting frame, a plurality of guide posts are provided in the mounting frame, the delay component and the rear touch-pressure seat are slidably mounted on the guide posts, a main pressure spring is provided between the delay component and the mounting frame, and the main pressure spring provides elastic force for the delay component to move toward the outside of the accommodating cavity; The rear touch pressure seat is engaged with the pressure plate, and the rear touch pressure seat drives the pressure plate to swing by sliding on the guide column; The side wall of the frame is provided with a top tooth, and the delay component contacts with the top tooth when the door leaf swings into the door frame for closing. The delay component is blocked by the top tooth and moves into the accommodating cavity during the closing process of the door leaf. The mounting frame is provided with a reversing stopper on the sliding path of the delay component for releasing the delay component from the abutting state with the top tooth. The delay component moves toward the outside of the accommodating cavity by releasing the abutting state with the top tooth and cooperating with the rear contact pressure seat.

5. The airbag sealed door according to claim 4, characterized in that: The delay component comprises a sliding seat slidably mounted on the guide column and a bevel pin slidably mounted in the sliding seat vertically, and a return spring is arranged between the bevel pin and the sliding seat to provide an upward elastic force for the bevel pin; The top of the bevel pin is provided with an inclined surface and the inclined surface points to the reversing stopper. The bevel pin in the delay component driven by the top tooth to slide on the guide column abuts against the reversing stopper, and the bevel pin then moves downward on the slide seat. A matching groove is provided in the middle of the rear contact pressure seat for the bottom of the oblique head pin to be embedded.

6. The airbag sealed door according to claim 5, characterized in that: The horizontal height of the position where the reversing stopper contacts the oblique head pin is lower than the bottom of the position where the top tooth contacts the oblique head pin, and the length of the bottom of the oblique head pin extending out of the slide seat is greater than the distance between the slide seat and the rear contact pressure seat; The length of the matching groove of the rear contact pressure seat in the axial direction of the guide column is greater than the sum of the distance from the position where the reversing block first contacts the bevel pin to the back of the bevel pin and the width of the bottom of the bevel pin.

7. The airbag sealed door according to claim 4, characterized in that: The bottom end of the rear touch pressure seat is provided with two clamping pins, and the side of the pressure plate close to the inner side of the accommodating cavity is provided with a driving frame, and the driving frame is provided with a frame plate extending upward on the back side of the pressure plate, and the clamping pins are clamped on the frame plate.

8. The airbag sealed door according to claim 7, characterized in that: The position of the air storage bag abutting against the pressure plate is between the projection positions of the swing axis of the pressure plate and the clamping pin of the rear contact pressure seat on the side wall of the frame; The distance between the position of the air storage bag on the frame side wall and the projection of the clamping pin on the frame side wall is greater than the distance between the air storage bag and the projection of the swing axis on the frame side wall.

9. The airbag sealed door according to claim 2, characterized in that: The cross section of the air strip is bent, and the laying range extends to both sides to the front end surface of the retracted retaining edge and the side wall of the door frame at the front end of the retracted retaining edge.

10. An airbag sealed door according to claim 2 or 9, characterized in that: The air strip is folded forward and backward, and the folded portion close to the inner wall of the door frame is connected to the inner wall of the door frame as a fixed portion, while the outer folded portion is used as a movable portion for outward expansion, and the air storage bag is connected to the fixed portion of the air strip through an air connection piece; The expanded portion of the air strip has a tendency to roll driven by the movable door leaf.

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