Airtight door sealing device

Abstract

The utility model belongs to the technical field of door and window accessories, and provides an airtight door sealing device which comprises a door body frame and further comprises a driving mechanism and a sealing plate which are installed on the door body frame. A sliding cavity and a telescopic cavity which are communicated in the length direction are formed in the door body frame side by side, and a telescopic opening communicated with the outside is formed in the side, away from the door leaf glass, of the telescopic cavity. The driving mechanism comprises a power piece and a push plate, the power piece is fixedly installed in the sliding cavity, the push plate is arranged in the sliding cavity in a sliding mode, a guide groove is formed in the push plate, and the axial direction of the guide groove is inclined to the sliding direction of the push plate; the sealing plate is movably arranged in the telescopic cavity, a guide column corresponding to the guide groove is arranged on the side, close to the push plate, of the sealing plate, and the power piece drives the sliding plate to slide back and forth in the length extending direction of the sliding cavity so as to drive the sealing plate to stretch out of the telescopic opening or retract into the telescopic opening. The sealing device is of a telescopic structure, the sealing service life is prolonged, and the sealing effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, in particular to an airtight door sealing device. Background Art

[0002] A door refers to the entrance and exit of a building or a device installed at the entrance and exit that can be opened and closed. A door is an entity that divides a limited space. Its function is to connect and close the entrances and exits of two or more spaces. As an important component of home decoration and industrial equipment, airtight doors are not only required to have good sealing and sound insulation, but also to be easy to use and have a high degree of automation.

[0003] The structure of the automatic sealing device for door leafs on the market is too simple, resulting in weak sealing force and unreliable sealing. Existing airtight doors are usually sealed by squeezing the wool strips or rubber strips on the door body. As time goes by, the wool strips will age after the door body has been used for a few years, and some of the wool strips will fall off. The elasticity of the rubber strips will obviously decline after a few years of use, resulting in a significant decrease in the sealing effect.

[0004] The technical problem to be solved by the present application is: how to solve the problem of poor sealing effect of existing airtight doors. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide an airtight door sealing device which has the characteristics of good sealing effect and convenient use.

[0006] The technical solution adopted by the utility model is: an airtight door sealing device, including a door frame, and also including a driving mechanism and a sealing plate installed on the door frame;

[0007] A sliding cavity and a telescopic cavity are arranged in parallel inside the door frame and are connected in the length direction. The telescopic cavity is connected to the sliding cavity. A telescopic opening connected to the outside is arranged on the side of the telescopic cavity away from the door leaf glass.

[0008] The driving mechanism includes a power member and a push plate, wherein the power member is fixedly installed in the sliding cavity, the push plate is slidably arranged in the sliding cavity, a guide groove is arranged on the push plate, and the axial direction of the guide groove is inclined to the sliding direction of the push plate;

[0009] The sealing plate is movably arranged in the telescopic cavity. A guide column corresponding to the guide groove is arranged on one side of the sealing plate close to the push plate. The power member drives the slide plate to slide back and forth along the length extension direction of the sliding cavity, thereby driving the sealing plate to extend from or retract into the telescopic opening.

[0010] The airtight door sealing device of the present application, by setting the sealing plate as a retractable structure, can retract the sealing plate into the door frame when the door is in an open state or in motion, which can reduce the friction between the sealing plate and the door frame, reduce wear, and also reduce the exposure of the sealing plate to the outside world, avoid aging, and help to extend the service life of the sealing plate;

[0011] In addition, by utilizing the cooperation of the guide groove obliquely arranged on the push plate and the guide column connected to the sealing plate, the horizontal reciprocating movement of the push plate is converted into the telescopic movement required by the sealing plate, so that the telescopic movement of the sealing plate can be realized within the limited space inside the door frame, and the structure is more compact. At the same time, the push plate is used to apply pressure to the sealing plate, so that the sealing plate and the door frame remain in contact, thereby ensuring the sealing effect.

[0012] In some embodiments, a first sealing strip is provided at one end of the sealing plate away from the door leaf glass, and the first sealing strip is detachably connected to the sealing plate.

[0013] By adopting the above technical solution, by arranging the first sealing strip on the sealing plate, the sealing effect can be ensured, and by arranging the two to be detachably connected, the first sealing strip can be easily replaced.

[0014] In some embodiments, the first sealing strip is clamped with the sealing plate, a clamping groove is provided on the sealing plate, and a clamping block corresponding to the clamping groove is provided on the first sealing strip.

[0015] By adopting the above technical solution, the first sealing strip and the sealing plate are arranged to be snap-connected, so as to facilitate the disassembly and assembly of the first sealing strip.

[0016] In some embodiments, the driving mechanism further includes a slide rail, the slide rail is installed on the inner wall of the sliding cavity, and the push plate is slidably connected to the slide rail.

[0017] By adopting the above technical solution and setting the slide rail, the friction of the push plate when sliding can be reduced, the wear of the push plate can be slowed down, and the sliding trajectory of the push plate can also be limited, thereby ensuring the working accuracy of the sealing device.

[0018] In some embodiments, the inner wall of the sliding cavity is provided with a positioning groove for installing the sliding rail.

[0019] In some embodiments, a sealing member is further included, which is disposed between the sealing plate and the inner wall of the telescopic cavity, and the sealing member abuts against a side of the sealing plate away from the push plate and an inner wall of the telescopic cavity away from the sliding cavity.

[0020] By adopting the above technical solution, the sealing member can ensure the sealing between the sealing plate and the sliding cavity, and prevent external air, dust, etc. from entering the room through the telescopic cavity.

[0021] In some embodiments, the seal includes a mounting portion and an elastic portion, the mounting portion is fixedly connected to the sealing plate, one end of the elastic portion is connected to the mounting portion, and the other end elastically abuts against an inner wall of the telescopic cavity away from the sliding cavity.

[0022] In some embodiments, the seal includes a mounting portion and an elastic portion, the mounting portion is fixedly connected to the inner wall of the telescopic cavity, one end of the elastic portion is connected to the mounting portion, and the other end elastically abuts against a side of the sealing plate away from the push plate.

[0023] In some embodiments, the power member is one of an electric push rod, a pneumatic push rod, a hydraulic push rod, or a compression spring.

[0024] In some embodiments, a guide mechanism is further included, which is slidably connected to the sealing plate and is used to limit the sliding trajectory of the sealing plate.

[0025] By adopting the above technical solution, the accuracy of the telescopic movement of the sealing plate can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the airtight door sealing device of the first embodiment of the utility model;

[0027] Figure 2 for Figure 1 A schematic structural diagram of a driving mechanism and a sealing plate in an airtight door sealing device is shown.

[0028] Figure 3 for Figure 1 A schematic side view of the structure of the airtight door sealing device shown;

[0029] Figure 4 for Figure 3 A schematic diagram of the side structure of the airtight door sealing device shown, wherein the power parts are not shown;

[0030] Figure 5 It is a schematic structural diagram of the airtight door sealing device of the second embodiment of the utility model.

[0031] In the figure: 100, airtight door sealing device; 10, door body frame; 11, sliding cavity; 12, telescopic cavity; 20, driving mechanism; 21, power member; 22, push plate; 221, guide groove; 23, slide rail; 30, sealing plate; 31, guide column; 32, first sealing strip; 40, sealing member; 41, mounting portion; 42, elastic portion. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] First embodiment:

[0036] See also Figures 1 to 4 , which is an airtight door sealing device 100 of a preferred embodiment of the utility model, includes a door body frame 10, and also includes a driving mechanism 20 and a sealing plate 30 installed on the door body frame 10, the driving mechanism 20 is used to drive the sealing plate 30 to extend from the door body frame 10 to the outside or retract from the outside to the door body frame 10; the airtight door sealing device 100 of the present application can ensure the sealing effect and extend the service life of the sealing device.

[0037] like Figure 1 , Figure 3 and Figure 4 As shown, a sliding cavity 11 and a telescopic cavity 12 are arranged side by side inside the door frame 10 and penetrate through the door frame in the length direction. The telescopic cavity 12 is connected to the sliding cavity 11. A telescopic opening (not marked in the figure) connected to the outside is provided on the side of the telescopic cavity 12 away from the door leaf glass.

[0038] like Figure 1 and Figure 2As shown, the driving mechanism 20 includes a power member 21 and a push plate 22. The power member 21 is fixedly installed in the sliding cavity 11. The push plate 22 is slidably arranged in the sliding cavity 11. A guide groove 221 is arranged on the push plate 22. The axial direction of the guide groove 221 is inclined to the sliding direction of the push plate 22. The sealing plate 30 is movably arranged in the telescopic cavity 12. A guide column 31 corresponding to the guide groove 221 is arranged on the side of the sealing plate 30 close to the push plate 22. The end of the guide column 31 away from the push plate 22 is inserted into the guide groove 221. The power member 21 drives the slide plate to slide back and forth along the length extension direction of the sliding cavity 11, thereby driving the sealing plate 30 to extend from or retract into the telescopic opening. In the present application, the inclined guide groove 221 cooperates with the guide column 31 to convert the horizontal linear motion of the push plate 22 into the vertical motion required by the sealing plate 30. Such a design can make full use of the internal space of the door frame 10 and make the structure more compact. At the same time, the inclined guide groove 221 cooperates with the guide column 31 to play a role in preventing retreat and ensure the sealing effect. In order to reduce the virtual position when the push plate 22 drives the sealing plate 30, the width of the guide groove 221 should be slightly larger than the diameter of the guide column 31, and the gap between the two should not be too large.

[0039] Furthermore, in order to ensure the sealing effect, a first sealing strip 32 is provided at one end of the sealing plate 30 away from the door leaf glass, and the first sealing strip 32 is detachably connected to the sealing plate 30. By providing the first sealing strip 32 on the sealing plate 30, the sealing effect can be ensured, and by arranging the two to be detachably connected, the first sealing strip 32 can be easily replaced. Furthermore, the first sealing strip 32 is snap-fitted with the sealing plate 30, a snap-fitting groove is provided on the sealing plate 30, and a snap-fitting block corresponding to the snap-fitting groove is provided on the first sealing strip 32. The first sealing strip 32 is snap-fitted with the sealing plate 30 to facilitate the disassembly and assembly of the first sealing strip 32. Preferably, the side of the first sealing strip 32 away from the snap-fitting block is provided as a hollow structure, which can increase the elastic deformation of the first sealing strip 32 and ensure the sealing effect. Optionally, the first sealing strip 32 is one of a rubber strip, a silicone strip or a foam strip.

[0040] In one embodiment, the driving mechanism 20 further comprises a slide rail 23, which is mounted on the inner wall of the sliding cavity 11, and the push plate 22 is slidably connected to the slide rail 23. By providing the slide rail 23, the friction when the push plate 22 slides can be reduced, the wear of the push plate 22 can be slowed down, and the sliding track of the push plate 22 can also be limited to ensure the working accuracy of the sealing device. In this embodiment, the number of the slide rails 23 is two, and the two slide rails 23 are relatively arranged on the opposite side walls of the sliding cavity 11, and the slide rails 23 and the door frame 10 are split structures, and the inner wall of the sliding cavity 11 is provided with a positioning groove for installing the slide rails 23. In order to reduce friction, the slide rails 23 should be made of self-lubricating or wear-resistant plastic material. In other embodiments, the slide rails 23 can also be integrally formed with the door frame 10. In order to reduce the friction between the slide rails 23 and the push plate 22, a pulley or ball bearing can be arranged between the slide rails 23 and the push plate 22.

[0041] In one embodiment, the airtight door sealing device 100 of the present application further includes a seal 40, which is disposed between the sealing plate 30 and the inner wall of the telescopic cavity 12, and the seal 40 abuts against a side of the sealing plate 30 away from the push plate 22 and an inner wall of the telescopic cavity 12 away from the sliding cavity 11. The seal 40 can ensure the sealing between the sealing plate 30 and the sliding cavity 11, and prevent external air, dust, etc. from entering the room through the telescopic cavity 12.

[0042] As a further improvement of the above technical solution, the sealing member 40 includes a mounting portion 41 and an elastic portion 42. The mounting portion 41 is fixedly connected to the sealing plate 30. One end of the elastic portion 42 is connected to the mounting portion 41, and the other end is elastically abutted against the inner wall of the telescopic cavity 12 away from the sliding cavity 11. Specifically, the mounting portion 41 is snap-fitted to the sealing plate 30, and can also be fixedly connected by bolts or adhesives. The cross-sectional width of the elastic portion 42 gradually decreases from one end close to the mounting portion 41 to the end away from the mounting portion 41. This can ensure the elasticity of the elastic portion 42, and at the same time can also reduce the contact area between the elastic portion 42 and the inner wall of the telescopic cavity 12, thereby preventing the elastic portion 42 from interfering with the telescopic movement of the sealing plate 30. Preferably, the surface of the elastic portion 42 is an arc surface, and such a setting can further reduce the friction between the elastic portion 42 and the inner wall of the telescopic cavity 12. Furthermore, the number of the sealing members 40 is multiple, and the multiple sealing members 40 are spaced apart along the telescopic direction of the sealing plate 30. Optionally, the sealing member 40 is a sealing strip

[0043] Optionally, the power member 21 is one of an electric push rod, a pneumatic push rod, a hydraulic push rod or a compression spring. In this embodiment, the power member 21 is an electric push rod.

[0044] In one embodiment, the airtight door sealing device 100 may further include a guide mechanism (not shown), which is slidably connected to the sealing plate 30, and is used to limit the sliding track of the sealing plate 30 to prevent the sealing plate 30 from shaking and getting stuck; optionally, the guide mechanism may be a guide post and a guide sleeve, or a guide rail and a guide wheel, or a slider and a slide groove. The accuracy of the telescopic movement of the sealing plate 30 can be ensured by providing the guide mechanism.

[0045] In one embodiment, in order to prevent the guide column 31 from separating from the guide groove 221, a retaining spring is sleeved on the guide column 31. When the number of the retaining spring is one, the retaining spring is arranged on the side of the guide groove 221 away from the sealing plate 30. When the number of the retaining spring is two, the two retaining springs are respectively arranged on the opposite sides of the guide groove 221.

[0046] It should be noted that the number of guide grooves 221 and guide posts 31 can be set according to actual needs, and the specific number is not limited in this application, but the number of guide grooves 221 and guide posts 31 should correspond to each other. Similarly, the inclination angle of the guide groove 221 can also be set according to actual needs, and the inclination angle of the guide groove 221 is not limited here. In addition, the guide groove 221 can be a through groove or a blind groove.

[0047] The airtight door sealing device 100 of the present application, by setting the sealing plate 30 as a retractable structure, can retract the sealing plate 30 into the door frame 10 when the door is in an open state or in motion, thereby reducing the friction between the sealing plate 30 and the door frame, reducing wear, and also reducing the exposure of the sealing plate 30 to the outside world, avoiding aging, which is conducive to extending the service life of the sealing plate 30;

[0048] In addition, by utilizing the cooperation of the guide groove 221 obliquely arranged on the push plate 22 and the guide column 31 connected to the sealing plate 30, the horizontal reciprocating movement of the push plate 22 is converted into the telescopic movement required by the sealing plate 30, so that the telescopic movement of the sealing plate 30 can be realized within the limited space inside the door body frame 10, and the structure is more compact. At the same time, the push plate 22 is used to apply pressure to the sealing plate 30, so that the sealing plate 30 and the door frame remain in contact, thereby ensuring the sealing effect.

[0049] Second embodiment:

[0050] The airtight door sealing device 100 of this embodiment is similar to the airtight door sealing device 100 in the first embodiment, except that the structure of the sealing member 40 in this embodiment is different from that of the sealing member 40 in the first embodiment. The sealing member 40 in this embodiment includes a mounting portion 41 and an elastic portion 42, wherein the mounting portion 41 is fixedly connected to the inner wall of the telescopic cavity 12, one end of the elastic portion 42 is connected to the mounting portion 41, and the other end is elastically abutted against the side of the sealing plate 30 away from the push plate 22. Specifically, in this embodiment, the peripheral surfaces of the mounting portion 41 and the elastic portion 42 are both arc surfaces, the mounting portion 41 is clamped with the door body frame 10, and the elastic portion 42 is an internal hollow structure. It should be noted that the structure of the sealing member 40 is not limited to the structure shown in the accompanying drawings, and the structure of the sealing member 40 can be set according to actual needs, and only needs to meet the requirements of ensuring the sealing between the sealing plate 30 and the sliding cavity 11 and preventing external air, dust, etc. from entering the room through the telescopic cavity 12.

[0051] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An airtight door sealing device, comprising a door frame (10), characterized in that: It also includes a driving mechanism (20) and a sealing plate (30) mounted on the door frame (10); A sliding cavity (11) and a telescopic cavity (12) are arranged in parallel inside the door frame (10) and are connected in the length direction; the telescopic cavity (12) is connected to the sliding cavity (11); and a telescopic opening connected to the outside is provided on a side of the telescopic cavity (12) away from the door leaf glass; The driving mechanism (20) comprises a power member (21) and a push plate (22), wherein the power member (21) is fixedly mounted in the sliding cavity (11), and the push plate (22) is slidably arranged in the sliding cavity (11), and a guide groove (221) is arranged on the push plate (22), and the axial direction of the guide groove (221) is inclined to the sliding direction of the push plate (22); The sealing plate (30) is movably arranged in the telescopic cavity (12); a guide column (31) corresponding to the guide groove (221) is arranged on one side of the sealing plate (30) close to the push plate (22); the power member (21) drives the slide plate to slide back and forth along the length extension direction of the sliding cavity (11), thereby driving the sealing plate (30) to extend from the telescopic opening or retract into the telescopic opening.

2. The airtight door sealing device according to claim 1, characterized in that: A first sealing strip (32) is provided at one end of the sealing plate (30) away from the door leaf glass, and the first sealing strip (32) is detachably connected to the sealing plate (30).

3. The airtight door sealing device according to claim 2, characterized in that: The first sealing strip (32) is clamped with the sealing plate (30); a clamping groove is provided on the sealing plate (30); and a clamping block corresponding to the clamping groove is provided on the first sealing strip (32).

4. The airtight door sealing device according to claim 1, characterized in that: The driving mechanism (20) further comprises a slide rail (23), wherein the slide rail (23) is mounted on the inner wall of the slide cavity (11), and the push plate (22) is slidably connected to the slide rail (23).

5. The airtight door sealing device according to claim 4, characterized in that: The inner wall of the sliding cavity (11) is provided with a positioning groove for installing a sliding rail (23).

6. The airtight door sealing device according to claim 1, characterized in that: It also includes a sealing member (40), which is arranged between the sealing plate (30) and the inner wall of the telescopic cavity (12), and the sealing member (40) respectively abuts against a side of the sealing plate (30) away from the push plate (22) and an inner wall of the telescopic cavity (12) away from the sliding cavity (11).

7. The airtight door sealing device according to claim 6, characterized in that: The sealing member (40) comprises a mounting portion (41) and an elastic portion (42); the mounting portion (41) is fixedly connected to the sealing plate (30); one end of the elastic portion (42) is connected to the mounting portion (41), and the other end elastically abuts against an inner wall of the telescopic cavity (12) away from the sliding cavity (11).

8. The airtight door sealing device according to claim 6, characterized in that: The sealing member (40) comprises a mounting portion (41) and an elastic portion (42); the mounting portion (41) is fixedly connected to the inner wall of the telescopic cavity (12); one end of the elastic portion (42) is connected to the mounting portion (41), and the other end is elastically abutted against a side of the sealing plate (30) away from the push plate (22).

9. The airtight door sealing device according to claim 1, characterized in that: The power member (21) is one of an electric push rod, a pneumatic push rod, a hydraulic push rod or a compression spring.

10. The airtight door sealing device according to claim 1, characterized in that: It also comprises a guide mechanism, which is slidably connected to the sealing plate (30) and is used to limit the sliding track of the sealing plate (30).

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