Door bottom sealing device and door

Abstract

The utility model provides a door bottom sealing device and a door, the door bottom sealing device comprises a main frame body used for being fixed to the bottom of a door leaf, and the main frame body is internally provided with a mounting cavity; the transmission assembly comprises a compression spring, a transmission rod and an ejector rod, when the door leaf is in an open state, the compression spring pushes the transmission rod to move horizontally through elastic restoring force, and then the end of the ejector rod protrudes out of the inner side face of the door leaf; each driving assembly comprises a first metal elastic piece, the head end of the first metal elastic piece is fixed to the transmission rod, and the tail end of the first metal elastic piece is fixed to the main frame body; the rubber strip assembly is hung below the driving assembly through a first metal elastic piece, and when the transmission rod is pushed by the ejector rod, the first metal elastic piece generates elastic deformation and pushes the rubber strip assembly to move downwards, so that the bottom of the rubber strip assembly protrudes to the position below the bottom opening of the main frame body. According to the utility model, the assembly of the door bottom sealing assembly can be simplified.

Description

Technical Field

[0001] This utility model relates to the field of door technology, and more specifically, to a door bottom sealing device and a door. Background Technology

[0002] Doors serve as the boundary between the outdoors and the indoors. To ensure proper opening and closing, a gap is usually left at the bottom of the door. These gaps also become channels for outdoor air (hot air in summer, cold wind in winter), dust, noise, and stray light to enter the room. A poorly sealed bottom of the door will seriously affect the indoor living environment.

[0003] To address the gap at the bottom of door panels, an automatic lifting and sealing structure has been developed. This structure involves fixing a main bracket to the bottom of the door panel, within which a resilient component and a pressure strip assembly are installed. When the door is closed, the resilient component pushes the pressure strip assembly downwards, sealing the gap at the bottom of the door panel. However, in this solution, both the resilient component and the pressure strip assembly are interlocked with the main bracket, making assembly relatively difficult. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a new door bottom sealing device and door, addressing the relatively high assembly difficulty of the aforementioned automatic lifting sealing structure at the bottom of the door.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is to provide a door bottom sealing device, comprising:

[0006] A main frame for fixing to the bottom of the door leaf, the main frame having a mounting cavity that is arranged along the width direction of the door leaf and has a bottom opening;

[0007] The transmission assembly includes a compression spring, a transmission rod, and a top rod, which are respectively installed in the mounting cavity of the main frame and sequentially connected along the width direction of the door leaf. The length of the transmission rod is greater than half the width of the door leaf, and when the door leaf is in the open state, the compression spring pushes the transmission rod to move horizontally through the elastic restoring force, thereby causing the end of the top rod to protrude from the inner side of the door leaf.

[0008] Multiple drive components are located in the mounting cavity of the main frame. Each drive component includes a first metal spring, the first end of which is fixed to the transmission rod, and the tail end of which is fixed to the main frame.

[0009] The rubber strip assembly is located in the mounting cavity and is suspended below the driving assembly by the first metal elastic sheet, and when the transmission rod is pushed by the push rod and drives the first end of the first metal elastic sheet to move towards the compression spring, the first metal elastic sheet is elastically deformed and pushes the rubber strip assembly downwards by the middle part of the first metal elastic sheet, so that the bottom of the rubber strip assembly protrudes below the bottom opening of the main frame body.

[0010] As a further improvement of the utility model, the rubber strip assembly comprises a pressing rod made of rigid material and a pressing strip made of elastic material and fixed to the bottom of the pressing rod; the top of the pressing rod is provided with a mounting groove and a plurality of pin rods, and the mounting groove is arranged along the length direction of the pressing rod; the middle part of the first metal elastic sheet is embedded in the mounting groove, and the pressing rod is suspended below the driving assembly by the pin rods which are bridged on the two groove walls of the mounting groove, and when the first metal elastic sheet is elastically deformed, the part of the first metal elastic sheet in the mounting groove pushes the pressing rod downwards, and then the bottom of the pressing strip protrudes below the bottom opening of the main frame body.

[0011] As a further improvement of the utility model, each driving assembly comprises a first fixed block fixed with the transmission rod and a second fixed block fixed with the main frame body, and in each driving assembly, the distance between the first fixed block and the push rod is less than the distance between the second fixed block and the push rod; the first end of the first metal elastic sheet is fixed on the first fixed block, and the tail end of the first metal elastic sheet is fixed on the second fixed block.

[0012] As a further improvement of the utility model, the mounting cavity comprises two vertical side walls, each vertical side wall is provided with a horizontal supporting plate, and a strip-shaped groove is formed between the two horizontal supporting plates, and the mounting cavity is divided into an upper cavity and a lower cavity by the two horizontal supporting plates.

[0013] The size of the strip-shaped groove in the thickness direction of the door leaf is less than the size of the first fixed block and the second fixed block in the thickness direction of the door leaf, the size of the first metal elastic sheet in the thickness direction of the door leaf is less than the size of the strip-shaped groove in the thickness direction of the door leaf, and the compression spring, the transmission rod, the push rod, the first fixed block and the second fixed block are arranged in the upper cavity, and the middle part of the first metal elastic sheet passes through the strip-shaped groove and suspends the rubber strip assembly in the lower cavity.

[0014] As a further improvement of the utility model, the door bottom sealing device comprises two driving assemblies, and the driving assembly adjacent to the push rod comprises a second metal elastic sheet, the first end of the second metal elastic sheet is fixed with the second fixed block, and the tail end of the second metal elastic sheet is fixed with the rubber strip assembly.

[0015] As a further improvement of the utility model, the fixed position of the rubber strip assembly and the second metal spring is located at the central part of the length direction of the rubber strip assembly.

[0016] As a further improvement of the utility model, the second fixed block is provided with a first fixed hole arranged along the thickness direction of the door leaf, the main frame body is provided with a second fixed hole corresponding to the first fixed hole, and the second fixed block is fixed to the main frame body through a screw penetrating through the second fixed hole and inserted into the first fixed hole.

[0017] As a further improvement of the utility model, the transmission rod comprises a horizontal section, a first vertical section and a second vertical section, and the first vertical section and the second vertical section are respectively connected to the two ends of the horizontal section perpendicularly.

[0018] The top rod is threadedly connected to a first bolt fixed to the first vertical section, the main frame body comprises a third fixed block fixed to the mounting cavity, the third fixed block is provided with a horizontal protruding column facing the top rod, the first end of the compression spring is sleeved on the horizontal protruding column, and the second end of the compression spring is sleeved on a second bolt fixed to the second vertical section.

[0019] As a further improvement of the utility model, the door bottom sealing device comprises a first fixed plate and a second fixed plate, the first fixed plate is fixed to the outer side surface of the door leaf, the second fixed plate is fixed to the inner side surface of the door leaf, the second fixed plate is provided with a through hole for the top rod to pass through, and the two end parts of the mounting cavity are blocked by the first fixed plate and the second fixed plate.

[0020] The utility model also provides a door which comprises a door leaf and the door bottom sealing device, and the door bottom sealing device is arranged at the bottom of the door leaf.

[0021] The utility model has the advantages that the driving assembly is fixed to the transmission assembly, the rubber strip assembly is hung on the mounting cavity of the main frame body through the driving assembly, the transmission assembly, the driving assembly and the rubber strip assembly can be arranged on the main frame body at one time, and the assembly of the door bottom sealing assembly is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the schematic diagram of the door bottom sealing device provided by the utility model embodiment.

[0023] Figure 2 is the exploded structural schematic diagram of the door bottom sealing device provided by the utility model embodiment.

[0024] Figure 3 is the schematic diagram of the side of the door bottom sealing device provided by the utility model embodiment.

[0025] Figure 4is a sectional structure schematic view of the door bottom sealing device provided by the embodiment of the utility model.

[0026] Figure 5 is Figure 4 the enlarged schematic view of A part in the middle.

[0027] Figure 6 is Figure 4 the enlarged schematic view of B part in the middle.

[0028] Figure 7 is Figure 4 the enlarged schematic view of C part in the middle.

[0029] Figure 8 is Figure 4 the enlarged schematic view of D part in the middle.

[0030] Figure 9 is the assembly structure schematic view of the rotating assembly, the driving assembly and the rubber strip assembly in the door bottom sealing device provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0032] As Figures 1-3 shown, it is the structure schematic view of the door bottom sealing device provided by the embodiment of the utility model, the door bottom sealing device can be assembled to the bottom of the door leaf, and after the door leaf is closed, the bottom of the door leaf has no gap, that is, both the smooth opening and closing of the door leaf can be ensured, and the bottom sealing of the door leaf in the closed state can be ensured. The door bottom sealing device of the embodiment comprises a main frame body 10, a transmission assembly, a plurality of driving assemblies and a rubber strip assembly, and the door bottom sealing device is assembled to the bottom of the door leaf through the main frame body 10, and the transmission assembly, the plurality of driving assemblies and the rubber strip assembly are respectively arranged on the main frame body 10.

[0033] The main frame body 10 has the installation cavity 11, the installation cavity 11 is in the shape of a long strip, and is along the width direction (that is, the direction perpendicular to the drawing plane) of the door leaf. Figure 1The bottom of the door leaf can have a mounting groove (which can run through the width direction of the door leaf), and the main body portion of the main frame body 10 is embedded into the mounting groove, so that when the door leaf is in the open state, the door bottom sealing device is completely embedded into the bottom of the door leaf, without affecting the opening and closing of the door leaf. Those skilled in the art can understand that, because the rubber strip assembly presses down to seal the gap at the bottom of the door leaf, a strip-shaped opening is provided at the bottom of the main frame body 10 to facilitate the downward movement of the rubber strip assembly and the protrusion of the rubber strip assembly below the door leaf. In a specific implementation, the main frame body 10 can be mounted to the bottom of the door leaf by any existing manner, which will not be described herein again. Moreover, those skilled in the art can understand that the main frame body 10 can be composed of a profile and has two end openings.

[0034] The transmission assembly includes a compression spring 21, a transmission rod 22 and a top rod 23, which are respectively arranged in the mounting cavity 11 of the main frame body 10, and the length of the transmission rod 22 is greater than one half of the width of the door leaf. In the mounting cavity of the main frame body 10, the compression spring 21, the transmission rod 22 and the top rod 23 are sequentially and transmissionally connected along the width direction of the door leaf. Specifically, the transmission rod 22 is arranged in the mounting cavity 11 in a manner that it can move along the length direction of the main frame body 10, one end of the compression spring 21 is fixed to the main frame body 10, the other end is fixedly connected to the transmission rod 22, and one end of the top rod 23 is fixed to the end of the transmission rod 22 away from the compression spring 21. When the door leaf is in the open state (including the half-open state), the compression spring 21 pushes the transmission rod 22 to move horizontally by the elastic restoring force, and the end of the top rod 23 (i.e., the end away from the transmission rod 22) protrudes from the inner side of the door leaf (i.e., the side of the door leaf on which the hinge is mounted), that is, the transmission rod 22 and the top rod 23 can slide in the mounting cavity along the width direction of the door leaf. When the door leaf is closed (at this time, the inner side of the door leaf is in contact with the door frame), the free end of the top rod 23 is retracted into the inner side of the door leaf under the push of the door frame, and the top rod 23 pushes the transmission rod 22 to slide in the opposite direction away from the inner side of the door leaf, and the compression spring 21 is compressed under the push of the transmission rod 22, so that the compression stroke is increased.

[0035] A plurality of driving assemblies are respectively arranged in the mounting cavity of the main frame body 10, and each driving assembly includes a first metal spring sheet 31, a first end of the first metal spring sheet 31 is fixed to the transmission rod 22, and a second end is fixed to the main frame body 10. The fixed positions of the first metal spring sheets 31 of the plurality of driving assemblies and the transmission rod 22 are distributed along the width direction of the door leaf (the centers of the plurality of first metal spring sheets 31 are substantially located in the same plane). In the embodiment, the first metal spring sheet 31 is arranged in the mounting cavity in a manner that it can slide along the width direction of the door leaf. Figure 2 In the embodiment, the door bottom sealing device includes two driving assemblies, and in actual application, the door bottom sealing device can also include more driving assemblies.

[0036] The rubber strip assembly is installed in the mounting cavity and suspended below the drive assembly by the first metal spring 31. When the transmission rod 22 is pushed by the push rod 23 to move towards the compression spring 21 (for example, when the door is closed, the push rod 23 is pushed by the door frame and moves), the head end of the first metal spring 31 moves synchronously. Since the tail end of the first metal spring 31 is fixed to the main frame 10 and cannot move synchronously, it can only produce elastic deformation to make its middle part move down. Thus, the middle part of the first metal spring 31 pushes the rubber strip assembly down, so that the bottom of the rubber strip assembly protrudes below the bottom opening of the main frame 10, thereby sealing the bottom gap of the door leaf.

[0037] Since the rubber strip assembly is suspended from the drive assembly and does not need to be plugged into the main frame 10, during assembly, the transmission assembly, drive assembly and rubber strip assembly are assembled together and then simultaneously installed into the mounting cavity 11 of the main frame 10 (for example, inserted into the mounting cavity 11 from the end opening of the main frame 10), without having to plug the rubber strip assembly separately into the main frame 10, which simplifies the assembly of the door bottom sealing assembly.

[0038] In one embodiment of this utility model, the aforementioned sealing strip assembly includes a pressure rod 41 and a pressure strip 42, wherein the pressure rod 41 is made of a rigid material (e.g., aluminum alloy), and the pressure strip 42 is made of an elastic material (e.g., rubber), and the pressure strip 42 is mounted below the pressure rod 41. This structure ensures a tight seal at the bottom of the door while providing good rigidity to the sealing strip assembly, allowing multiple drive components to push the sealing strip assembly to rise or fall synchronously. Figure 3 , Figure 4 , Figure 6 , Figure 9 As shown, the top of the pressure rod 41 has a mounting groove 411 and a plurality of pins 43, wherein the mounting groove 411 is arranged along the length direction of the pressure rod 41 (i.e., Figure 1 (In the direction indicated by arrow X in the image), multiple pins 43 are respectively connected across the two groove walls of the mounting groove 411 (i.e., the pins 43 are set along the thickness direction of the door leaf). The middle part of the first metal spring 31 is embedded in the mounting groove 411, and the pressure rod 41 is suspended below the drive assembly by the pins 43. When the first metal spring 31 elastically deforms, the part of the first metal spring 31 located in the mounting groove 411 pushes the pressure rod 41 down, thereby causing the bottom of the pressure strip 42 to protrude below the bottom opening of the main frame 10.

[0039] Specifically, the bottom surface of the pressure bar 41 has a C-shaped groove, which is set along the width direction of the door leaf. Correspondingly, the top two sides of the pressure strip 42 each have wing plates set along the width direction of the door leaf, and the pressure strip 42 is installed to the pressure bar 41 by embedding the two wing plates into the C-shaped groove. The main body of the pressure strip 42 protrudes below the pressure bar 41. Because the pressure strip 42 is relatively easy to age, the above structure facilitates the replacement of the pressure strip 42.

[0040] In combination Figure 2 , Figures 4-8 In an embodiment of the present application, each driving assembly comprises a first fixed block 32 and a second fixed block 33, wherein the first fixed block 32 is fixed to the transmission rod 22 (for example by means of screws), the second fixed block 33 is fixed to the main frame body 10, and in each driving assembly, the distance between the first fixed block 32 and the top rod 23 is less than the distance between the second fixed block 33 and the top rod 23. The first end of the first metal spring 31 is fixed to the first fixed block 32, i.e. the first end of the first metal spring 31 is fixed to the transmission rod 22 through the first fixed block 32; the second end of the first metal spring 31 is fixed to the second fixed block 33, i.e. the second end of the first metal spring 31 is fixed to the main frame body 10 through the second fixed block 33. Of course, in actual application, the first metal spring 31 can also be installed into the mounting cavity 11 of the main frame body 10 through other structures.

[0041] As shown in Figure 3 In an embodiment of the present application, the mounting cavity 11 of the main frame body 10 comprises two vertical side walls, each vertical side wall has a horizontal supporting plate 12, and a strip-shaped groove is formed between the two horizontal supporting plates 12 (i.e. the two horizontal supporting plates 12 are located at the same horizontal height), and the mounting cavity 11 is divided into an upper cavity 111 and a lower cavity 112 by the two horizontal supporting plates 12 (i.e. the part of the mounting cavity 11 above the two horizontal supporting plates 12 constitutes the upper cavity 111, and the part of the mounting cavity 11 below the two horizontal supporting plates 12 constitutes the lower cavity 112).

[0042] The dimensions of the strip-shaped groove in the thickness direction of the door leaf are respectively less than the dimensions of the first fixed block 32 and the second fixed block 33 in the thickness direction of the door leaf, and the dimension of the first metal spring 31 in the thickness direction of the door leaf is less than the dimension of the strip-shaped groove in the thickness direction of the door leaf. The compression spring 21, the transmission rod 22, the top rod 23, the first fixed block 32 and the second fixed block 33 are all installed in the upper cavity 111, and the middle part of the first metal spring 31 passes through the strip-shaped groove and suspends the rubber strip assembly in the lower cavity 112. The above structure can ensure that after being installed in place, the transmission assembly and the driving assembly will not fall out of the bottom opening of the mounting cavity 11 (the rubber strip assembly is suspended and connected with the driving assembly, so it will not fall out of the bottom opening of the mounting cavity 11 either), and at the same time, the above structure is also beneficial to limiting the transmission assembly and the driving assembly, for example, it can ensure that the transmission assembly and the first fixed block 32 slide in the horizontal direction during the opening and closing process of the door leaf.

[0043] In combination Figure 6 , Figure 7As shown, in one embodiment of this utility model, the door bottom sealing device includes two driving components, and the driving component adjacent to the top rod 23 includes a second metal spring 34. The first end of the second metal spring 34 is fixed to the second fixing block 33 (within the same driving component) (e.g., by screws), and the tail end of the second metal spring 34 is fixed to the rubber strip assembly (pressure rod 41) (e.g., by screws). The second metal spring 34 can, on the one hand, suspend the rubber strip assembly, and on the other hand, limit the horizontal movement of the rubber strip assembly, preventing the rubber strip assembly from being driven by the first metal spring 31 to move horizontally (e.g., along the width direction of the door leaf) too much.

[0044] Specifically, the fixing position of the rubber strip assembly and the second metal spring 34 is located at the center of the rubber strip assembly along its length. This improves the stability of the rubber strip assembly.

[0045] Combination Figure 2 , Figure 9 As shown, in one embodiment of this utility model, the second fixing block 33 has a first fixing hole 331 arranged along the thickness direction of the door leaf. Correspondingly, the main frame 10 has a second fixing hole 13 corresponding to the first fixing hole 331. The second fixing block 33 is fixed to the main frame 10 by a screw 50 that passes through the second fixing hole 13 and is inserted into the first fixing hole 331. Specifically, the first fixing hole 331 can be an internal threaded hole, and the second fixing hole 13 can be a through hole. Furthermore, after the transmission assembly, drive assembly, and rubber strip assembly are installed together in the mounting cavity 11 of the main frame 10, the second fixing block 33 is fixed to the main frame 10 by screws.

[0046] like Figure 5 , Figure 8 As shown, in one embodiment of this utility model, the transmission rod 22 includes a horizontal section, a first vertical section, and a second vertical section, with the first and second vertical sections respectively vertically connected to the two ends of the horizontal section. The push rod 23 is threadedly connected to a first bolt 26 fixed to the first vertical section (for example, the first vertical section has a fixing hole, and the first bolt 26 passes through the fixing hole and is locked by a nut). The main frame 10 also includes a third fixing block 14 (for example, by a self-tapping screw) fixed in the mounting cavity 11. The third fixing block 14 has a horizontal protrusion facing the push rod 23. The first end of the compression spring 21 is sleeved on the horizontal protrusion, and the second end is sleeved on the second bolt 25 fixed to the second vertical section (for example, the second vertical section has a fixing hole, and the second bolt 25 passes through the fixing hole and is locked by a nut).

[0047] In the assembling, the third fixed block 14 can be fixed in the installation cavity 11 of the main frame body 10 first, and then the assembled transmission assembly, driving assembly and rubber strip assembly are inserted into the installation cavity 11. Through the above structure, the transmission connection structure of the compression spring 21, transmission rod 22 and jacking rod 23 can be simplified, and the length of the jacking rod 23 protruding from the inner side surface of the door leaf can be adjusted, so that the door leaf can be easily closed while ensuring the sealing effect of the door bottom.

[0048] In an embodiment of the utility model, the door bottom sealing device further comprises a first fixed plate and a second fixed plate, wherein the first fixed plate is fixed on the outer side surface of the door leaf (i.e. the side surface where the lock tongue is located), the second fixed plate is fixed on the inner side surface of the door leaf (e.g. through screws), the second fixed plate has a through hole for the jacking rod to pass through, and the installation cavity 11 is blocked at two ends by the first fixed plate and the second fixed plate. Through the above structure, the transmission assembly and the driving assembly can be prevented from being pulled out of the installation cavity 11 of the main frame body 10, and the installation of the transmission assembly and the driving assembly is facilitated. When the door bottom sealing device is assembled to the door leaf, the transmission assembly, the driving assembly and the rubber strip assembly can be installed to the main frame body 10 first, then the main frame body 10 is assembled to the bottom of the door leaf, and finally the first fixed plate and the second fixed plate are fixed to the outer side surface and the inner side surface of the door leaf respectively.

[0049] The utility model further provides a door, which comprises a door leaf and the door bottom sealing device as described above, and the door bottom sealing device is installed to the bottom of the door leaf.

[0050] The above description is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of claims.

Claims

1. A door bottom sealing device, characterized in that, include: A main frame for fixing to the bottom of the door leaf, the main frame having a mounting cavity that is arranged along the width direction of the door leaf and has a bottom opening; The transmission assembly includes a compression spring, a transmission rod, and a top rod, which are respectively installed in the mounting cavity of the main frame and sequentially connected along the width direction of the door leaf. The length of the transmission rod is greater than half the width of the door leaf, and when the door leaf is in the open state, the compression spring pushes the transmission rod to move horizontally through the elastic restoring force, thereby causing the end of the top rod to protrude from the inner side of the door leaf. Multiple drive components are located in the mounting cavity of the main frame. Each drive component includes a first metal spring, the first end of which is fixed to the transmission rod, and the tail end of which is fixed to the main frame. The adhesive strip assembly is located inside the mounting cavity and is suspended below the drive assembly by the first metal spring. When the transmission rod is pushed by the push rod and drives the first end of the first metal spring to move towards the compression spring, the first metal spring generates elastic deformation and pushes the adhesive strip assembly downward by the middle of the first metal spring, so that the bottom of the adhesive strip assembly protrudes below the bottom opening of the main frame.

2. The door bottom sealing device according to claim 1, characterized in that, The adhesive strip assembly includes a pressure rod made of rigid material and a pressure strip made of elastic material fixed to the bottom of the pressure rod; the top of the pressure rod has a mounting groove and multiple pins, and the mounting groove is arranged along the length direction of the pressure rod; the middle part of the first metal spring is embedded in the mounting groove, and the pressure rod is suspended below the drive assembly by the pins spanning the two groove walls of the mounting groove, and when the first metal spring is elastically deformed, the part of the first metal spring located in the mounting groove pushes the pressure rod downward, thereby causing the bottom of the pressure strip to protrude below the bottom opening of the main frame.

3. The door bottom sealing device according to claim 1 or 2, characterized in that, Each drive assembly includes a first fixing block fixed to the transmission rod and a second fixing block fixed to the main frame. In each drive assembly, the distance between the first fixing block and the top rod is less than the distance between the second fixing block and the top rod. The first end of the first metal spring is fixed to the first fixing block, and the tail end of the first metal spring is fixed to the second fixing block.

4. The door bottom sealing device according to claim 3, characterized in that, The mounting cavity includes two vertical sidewalls, each with a horizontal support plate, and a strip groove is formed between the two horizontal support plates, which divide the mounting cavity into an upper cavity and a lower cavity. The dimensions of the strip groove in the thickness direction of the door leaf are smaller than the dimensions of the first fixing block and the second fixing block in the thickness direction of the door leaf, respectively. The dimension of the first metal spring in the thickness direction of the door leaf is smaller than the dimension of the strip groove in the thickness direction of the door leaf. The compression spring, transmission rod, top rod, first fixing block and second fixing block are installed in the upper cavity. The middle part of the first metal spring passes through the strip groove and suspends the rubber strip assembly in the lower cavity.

5. The door bottom sealing device according to claim 3, characterized in that, The door bottom sealing device includes two drive components, and the drive component adjacent to the top rod includes a second metal spring, the first end of which is fixed to the second fixing block, and the second metal spring is fixed to the rubber strip assembly.

6. The door bottom sealing device according to claim 5, characterized in that, The adhesive strip assembly and the second metal spring are fixed at the center of the adhesive strip assembly along its length.

7. The door bottom sealing device according to claim 3, characterized in that, The second fixing block has a first fixing hole arranged along the thickness direction of the door leaf, and the main frame has a second fixing hole corresponding to the first fixing hole. The second fixing block is fixed to the main frame by a screw that passes through the second fixing hole and is inserted into the first fixing hole.

8. The door bottom sealing device according to claim 3, characterized in that, The transmission rod includes a horizontal section, a first vertical section, and a second vertical section, and the first vertical section and the second vertical section are respectively vertically connected to the two ends of the horizontal section. The push rod is threaded onto the first bolt fixed to the first vertical section; the main frame includes a third fixing block fixed in the mounting cavity, the third fixing block having a horizontal protrusion facing the push rod, the first end of the compression spring being sleeved on the horizontal protrusion, and the second end of the compression spring being sleeved on the second bolt fixed to the second vertical section.

9. The door bottom sealing device according to claim 1, characterized in that, The door bottom sealing device includes a first fixing plate and a second fixing plate. The first fixing plate is fixed to the outer side of the door leaf, and the second fixing plate is fixed to the inner side of the door leaf. The second fixing plate has a through hole for the top rod to pass through, and the first fixing plate and the second fixing plate seal the two ends of the mounting cavity.

10. A door, characterized in that, It includes a door leaf and a bottom sealing device as described in any one of claims 1-9, wherein the bottom sealing device is installed at the bottom of the door leaf.

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