CN215445037U

CN215445037U - Sealing structure

Info

Publication number: CN215445037U
Application number: CN202022866566.6U
Authority: CN
Inventors: 杨小波; 肖月辉
Original assignee: Shanghai Cool Air Transport Refrigeration Equipment Co ltd
Current assignee: Shanghai Cool Air Transport Refrigeration Equipment Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2022-01-07
Anticipated expiration: 2030-12-03

Abstract

The embodiment of the utility model discloses a sealing structure, and relates to the field of sealing structure equipment. This seal structure includes: the vehicle body supporting frame is provided with a first air port; the air conditioning unit is provided with a second air opening corresponding to the first air opening; the first sealing element is clamped between the vehicle body supporting frame and the air conditioning unit; and a blocking assembly. Above-mentioned seal structure, adopt to block that subassembly and automobile body support frame and air conditioning unit enclose to establish and form a cavity, so that the first sealing member that is used for sealed intercommunication first wind gap and second wind gap can be acceptd in this cavity, thereby make to expose the first sealing member part of locating automobile body support frame and air conditioning unit outside and to receive the protection of shelves piece, avoid first sealing member to expose for a long time and lead to its leakproofness to descend and rainwater and gravel and sand to the destruction of first sealing member, and then reduce the ageing rate and the change frequency of first sealing member, can effectual reduction later maintenance cost again when improving waterproof sealing effect.

Description

Sealing structure

Technical Field

The utility model relates to the technical field of sealing structures, in particular to a sealing structure for a rail transit train.

Background

In order to enhance the riding experience of passengers, more and more urban rail transit trains adopt air conditioning units with air supplied from the end part and air returned from the end part, and the sealing interface structure of the air inlet for the air conditioning units directly influences the waterproof sealing performance of the trains. The existing air conditioning unit adopts direct compression joint of a rubber sealing ring, and sealing is realized through elastic deformation of the rubber sealing ring.

In urban rail transit, the waterproof requirement between an air conditioning unit and a train body of an urban rail transit train is extremely strict. Because track traffic operation environment is comparatively abominable, rubber seal's top and both sides expose for a long time and can lead to its leakproofness to descend, and rainwater and gravel can directly destroy rubber seal's top and both sides, if rubber seal department produces the gap because of installation or rubber is ageing, then has the risk of seepage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sealing structure to solve the technical problem that a rubber sealing ring of an air return inlet at the end part of an air conditioning unit of a current partial rail transit train generates a gap due to installation or rubber aging to generate leakage.

In order to solve the technical problems, the utility model adopts the technical scheme that:

a sealing structure, comprising:

the air inlet is arranged on the vehicle body support frame;

the air conditioning unit is provided with a second air opening corresponding to the first air opening;

the first sealing element is clamped between the vehicle body supporting frame and the air conditioning unit, the first sealing element is arranged around the first air opening and the second air opening, and the first air opening is communicated with the second air opening in a sealing mode through the first sealing element; and

the blocking assembly is located between the vehicle body supporting frame and the air conditioning unit, the vehicle body supporting frame, the air conditioning unit and the blocking assembly are arranged in an enclosing mode to form a cavity, and the first sealing element is contained in the cavity.

In some embodiments of the sealing structure, the blocking assembly includes a first fixing member and a second sealing member, one end of the first fixing member is fixedly connected to the air conditioning unit, the other end of the first fixing member is connected to the second sealing member, and one end of the second sealing member, which is far away from the first fixing member, is connected to the vehicle body support frame.

In some embodiments of the sealing structure, the first fixing member includes a horizontal fixing portion and vertical fixing portions disposed at two opposite ends of the horizontal fixing portion, the vertical fixing portion and the horizontal fixing portion form an included angle, and the second sealing member is connected to the horizontal fixing portion.

In some embodiments of the sealing structure, the horizontal fixing portion includes a connecting portion connected to the air conditioning unit and a bending portion extending from the connecting portion to the vehicle body support frame in a bending manner, and the second sealing member is interposed between the bending portion and the vehicle body support frame.

In some embodiments of the sealing structure, the first sealing member includes a first sealing portion and a second sealing portion connected to each other, the first sealing portion abuts against the vehicle body support frame, and the second sealing portion abuts against the air conditioning unit.

In some embodiments of the sealing structure, the first sealing portion is recessed towards a side close to the second sealing portion and encloses with the vehicle body support frame to form a first deformable cavity, and the second sealing portion is recessed towards a side close to the first sealing portion and encloses with the air conditioning unit to form a second deformable cavity.

In some embodiments of the seal structure, a serration is provided on the first seal portion, and the first seal portion abuts against the body support bracket through the serration.

In some embodiments of the sealing structure, the second sealing portion includes two symmetrically disposed convex portions, one end of each of the two convex portions is connected, the other end of each of the two convex portions is bent to a side away from the other convex portion, the two convex portions abut against the air conditioning unit respectively, and the two convex portions and the air conditioning unit are enclosed to form the second deformable cavity.

In some embodiments of the sealing structure, the sealing structure further includes a connecting member, the connecting member is fixedly disposed on the air conditioning unit and surrounds the outside of the second air opening, and one end of the first sealing member is connected to the connecting member.

In some embodiments of the sealing structure, a groove is formed on one side of the connecting member facing the vehicle body support frame, and the convex part is inserted and fixed in the groove.

In some embodiments of the sealing structure, the vehicle body support frame includes a first connection plate disposed obliquely, the first air opening is formed on the first connection plate, the air conditioning unit includes a second connection plate disposed opposite to the first connection plate, and the second air opening is formed on the second connection plate.

In some embodiments of the sealing structure, the second sealing member includes a third sealing portion and a fourth sealing portion connected to each other, the first fixing member is connected to the third sealing portion, and the fourth sealing portion abuts against the vehicle body support frame.

In some embodiments of the sealing structure, a receiving groove is formed in a side of the third sealing portion opposite to the first fixing member, one end of the first fixing member, which is far away from the air conditioning unit, is received in the receiving groove, and the fourth sealing portion is recessed towards a side close to the third sealing portion and encloses with the vehicle body support frame to form a third deformation chamber.

In some embodiments of the sealing structure, the fourth sealing portion includes a body and two symmetrically disposed protrusions, one end of each protrusion is connected to the body, the other end of each protrusion abuts against the vehicle body supporting frame, and the body, the protrusions, and the vehicle body supporting frame enclose the third deformation cavity.

The embodiment of the utility model has the following beneficial effects:

above-mentioned seal structure, adopt to block subassembly and automobile body support frame and air conditioning unit and enclose and establish and form a cavity, so that the first sealing member that is used for sealed intercommunication first wind gap and second wind gap can be acceptd in this cavity, thereby make to expose and locate the outer first sealing member part of automobile body support frame and air conditioning unit and can receive and block the subassembly protection, avoid first sealing member to expose for a long time and lead to its leakproofness to descend and rainwater and gravel to the destruction of first sealing member, and then reduce the ageing rate and the change frequency of first sealing member, can effectually reduce the later maintenance cost again when improving waterproof sealing effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

FIG. 1 is a sectional view showing an installation position of a vehicle body support frame and an air conditioning unit according to an embodiment.

FIG. 2 is a schematic view of the mounting of the vehicle body support frame and the air conditioning unit in one embodiment.

FIG. 3 is an exploded view of the air conditioning pack, the first seal, and the second seal in one embodiment.

Fig. 4 is an exploded view of the second connecting plate, the first fixing member and the connecting member in one embodiment.

FIG. 5 is a schematic view showing a mounting position of a vertical fixing portion in the sealing structure according to the embodiment.

FIG. 6 is a schematic view of the installed positions of the first seal and the second seal in the sealing structure according to one embodiment.

Fig. 7 is an enlarged view of a portion a of fig. 6.

Fig. 8 is an enlarged view of the part B in fig. 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, the sealing structure provided by the present invention will now be described. The sealing structure provided by the embodiment of the utility model is used for sealing the air return port at the end part of the air conditioning unit of the rail transit train. The sealing structure comprises a vehicle body support frame 100, an air conditioning unit 200, a first sealing element 300 and a blocking assembly 400. Specifically, the body support frame 100 is provided with a first tuyere 110. The air conditioning unit 200 is provided with a second tuyere 210 corresponding to the first tuyere 110. In this embodiment, the vehicle body support frame 100 is used to support the air conditioning unit 200 and fix the air conditioning unit 200. Further, the air conditioning unit 200 is provided with an air supply channel and a return air channel, the second air inlet 210 comprises an air supply outlet 211 communicated with the air supply channel and two return air inlets 212 communicated with the return air channel, and the air supply outlet 211 is located between the two return air inlets 212.

The air supply channel accommodates an air supply device 220, and an air supply end of the air supply device 220 is communicated with the air supply channel, is used for supplying air into the air supply channel, and is sent into the vehicle body through an air supply opening 211 and a first air opening 110 corresponding to the air supply opening 211 in sequence. Further, the return air end of the blower 220 may communicate with the return air passage for drawing air inside the vehicle compartment into the return air passage through the first air inlet 110 and the return air inlet 212 corresponding to the return air inlet 212 in sequence. It is understood that in other embodiments, the air conditioning assembly 200 may further include a return air fan for sucking air in the cabin into the return air channel sequentially through the first air inlet 110 and the return air inlet 212 corresponding to the return air inlet 212.

Further, the vehicle body support frame 100 includes a first connection plate 120 that is obliquely disposed and a base plate 130 for supporting the air conditioning unit 200. The first air opening 110 is formed on the first connection plate 120, the air conditioning unit 200 includes a second connection plate 230, the second connection plate 230 is disposed opposite to the first connection plate 120 and above the first connection plate 120, and the second air opening 210 is formed on the second connection plate 230. Further, the first sealing element 300 is clamped between the vehicle body supporting frame 100 and the air conditioning unit 200, the first sealing element 300 is arranged around the first air opening 110 and the second air opening 210, and the first air opening 110 and the second air opening 210 are in sealed communication through the first sealing element 300. The sealing communication means that the first sealing member 300 seals between the first tuyere 110 and the second tuyere 210 and forms an integrated structure communicating with each other. Specifically, the first sealing element 300 is clamped between the first connecting plate 120 and the second connecting plate 230, and since the first connecting plate 120 and the second connecting plate 230 are opposite and are both obliquely arranged, the second connecting plate 230 can press the first sealing element 300 against the first connecting plate 120, so as to perform a waterproof sealing function between the first air opening 110 and the second air opening 210.

Further, the barrier assembly 400 is located between the vehicle body support frame 100 and the air conditioning unit 200. The vehicle body support frame 100, the air conditioning unit 200 and the barrier assembly 400 are enclosed to form a chamber 500, and the first sealing element 300 is accommodated in the chamber 500. The second air inlet 210 and the first air inlet 110 are butted and assembled by utilizing the self gravity of the air conditioning unit 200, when the air conditioning unit 200 operates, negative pressure is generated in the areas of the air supply outlet 211 and the air return inlet 212, if the sealing is not tight, the water seepage phenomenon is easy to occur, and the riding experience of passengers is influenced. Above-mentioned seal structure, adopt and block subassembly 400 and automobile body support frame 100 and air conditioning unit 200 and enclose and establish a cavity 500, so that be used for the first sealing member 300 of sealed intercommunication first wind gap 110 with second wind gap 210 can accept in this cavity 500, thereby make the first sealing member 300 part of locating outside automobile body support frame 100 and air conditioning unit 200 can receive and block subassembly 400 protection, avoid first sealing member 300 to expose for a long time and lead to its leakproofness to descend and rainwater and gravel and sand to the destruction of first sealing member 300, and then reduce the ageing rate and the change frequency of first sealing member 300, can effectually reduce the later maintenance cost when improving waterproof sealing effect.

In this embodiment, the chamber 500 is defined by the barrier assembly 400, the first connection plate 120, the second connection plate 230, and the bottom plate 130. The barrier assembly 400 protects the exposed portions of both sides and the top of the first sealing member 300, and prevents the first sealing member 300 from being damaged by rainwater and sand and stones, as well as the deterioration of the sealing performance thereof due to the long-term exposure of the first sealing member 300.

In another embodiment, the barrier assembly 400 includes a first fixture 410 and a second seal 420. One end of the first fixing member 410 is fixedly connected with the air conditioning unit 200, the other end of the first fixing member is connected with the second sealing member 420, and one end of the second sealing member 420, which is far away from the first fixing member 410, is connected with the vehicle body supporting frame 100. The first fixing member 410 includes a horizontal fixing portion 411 and vertical fixing portions 412 disposed at opposite ends of the horizontal fixing portion 411. The horizontal fixing portion 411 and the vertical fixing portion 412 are both fixedly connected with the air conditioning unit 200. The vertical fixing portion 412 forms an angle with the horizontal fixing portion 411. The angle is preferably 90 °, and may be obtuse or acute. The second sealing member 420 is connected to the horizontal fixing portion 411. In this embodiment, the horizontal fixing portion 411 and the vertical fixing portion 412 are connected as an integral component. It is understood that in other embodiments, the horizontal fixing portion 411 and the vertical fixing portion 412 may also be of a separate structure and mounted correspondingly to the top and side of the first sealing member 300. Due to the presence of the first sealing member 300, a gap exists between the vehicle body support frame 100 and the air conditioning unit 200, and the horizontal fixing portion 411 connects the vehicle body support frame 100 and the air conditioning unit 200. The vertical fixing portion 412 connects the vehicle body support frame 100 and the air conditioning unit 200, so that the gap is ensured to be as small as possible, and the protection effect on the first sealing element 300 is improved.

In this embodiment, the horizontal fixing portion 411 and the vertical fixing portion 412 are both connected to the air conditioning unit 200 by rivets, that is, both are disposed on the second connecting plate 230. Specifically, the horizontal fixing portion 411 includes a connecting portion 4111 connected to the air conditioning unit 200 and a bending portion 4112 bent and extended from the connecting portion 4111 toward the body support 100. In this embodiment, the bending portion 4112 is formed by bending and extending from the connecting portion 4111 to the body support 100. The vertical fixing portion 412 is connected to the connecting portion 4111. The second seal 420 is interposed between the bending portion 4112 and the body support frame 100. Set up second sealing member 420 between kink 4112 and automobile body support frame 100, rely on air conditioning unit 200's self gravity to compress second sealing member 420, in the track traffic train marchs, can effectually block the destruction of rainwater and gravel and sand to first sealing member 300 top to play the effect that reduces the ageing speed of first sealing member 300 and the frequency of changing first sealing member 300, and then the effectual maintenance cost who reduces air conditioning unit 200 later stage. When the sealing performance of the top of the first sealing element 300 is improved, because the second sealing element 420 is an elastic structure, the compression amount of the second sealing element can be changed according to the distance between the bending part 4112 and the vehicle body supporting frame 100, the range of assembly allowable errors can be improved, the processing precision is reduced, and further the production cost is reduced. Vertical fixed part 412 sets up in the both sides of first sealing member 300, and the design of vertical fixed part 412 can effectually block most rainwater and the washing away of gravel and sand to the side of first sealing member 300 to play the effect that reduces the ageing speed of first sealing member 300 and change first sealing member 300 frequency, can effectively reduce the later maintenance cost again when improving waterproof sealing effect.

In another embodiment, the first sealing member 300 includes a first sealing portion 310 and a second sealing portion 320 connected to each other, the first sealing portion 310 abuts against the vehicle body supporting frame 100, the first sealing portion 310 is recessed toward a side close to the second sealing portion 320 and encloses with the vehicle body supporting frame 100 to form a first deformable cavity 301, the second sealing portion 320 abuts against the air conditioning unit 200, and the second sealing portion 320 is recessed toward a side close to the first sealing portion 320 and encloses with the air conditioning unit 200 to form a second deformable cavity 302. Specifically, the first sealing portion 310 abuts against the first connecting plate 120, the second sealing portion 320 abuts against the second connecting plate 230, and the volumes of the first deformable cavity 301 and the second deformable cavity 302 can be changed according to the compression amount of the first sealing element 300 clamped by the first connecting plate 120 and the second connecting plate 230, so that the first sealing portion 310 and the second sealing portion 320 are respectively better attached to the first connecting plate 120 and the second connecting plate 230, the sealing performance is improved, meanwhile, the range of assembly tolerance errors can be improved, the processing precision is reduced, and further, the production cost is reduced.

In another embodiment, the first sealing portion 310 includes two first protruding strips 311 symmetrically disposed. In this embodiment, the extending directions of the first convex strip 311 and the first sealing portion 310 are the same. Specifically, one end of each of the two first protruding strips 311 is connected, the other end of each of the two first protruding strips 311 abuts against the vehicle body support frame 100, and the two first protruding strips 311 and the vehicle body support frame 100 enclose the first deformation cavity 301. The volume of the first deformable cavity 301 can be changed by changing the compression amount of the first protruding strip 311 and the distance between the two first protruding strips 311, so that the first protruding strip 311 is further convenient to attach to the first connecting plate 120.

In another embodiment, the first sealing member 300 is provided with a fifth deformable cavity 303, the first protruding strip 311 includes a first elastic arm 3111 and a second elastic arm 3112, one end of the first elastic arm 3111 is connected to the second sealing portion 320, the other end of the first elastic arm 3111 is connected to one end of the second elastic arm 3112, the other end of the second elastic arm 3112 is connected to one end of the other second elastic arm 3112, and the two first elastic arms 3111, the two second elastic arms 3112 and the second sealing portion 320 enclose the fifth deformable cavity 303. That is, in the present embodiment, the first sealing portion 310 has a hollow structure having the fifth deformable cavity 303, and thus the amount of deformability of the first sealing portion 310 can be further increased, and the sealing property between the first seal 300 and the first connection plate 120 can be further improved.

In another embodiment, the first sealing portion 310 is provided with a serration 312, and the first sealing portion 310 abuts against the vehicle body support frame 100 through the serration 312. Specifically, the sawtooth portion 312 is disposed on the first protruding strip 311 and located between the first protruding strip 311 and the vehicle body support frame 100. The sawtooth portion 312 can further increase the compression amount of the first sealing member 300, and meanwhile, because the extending directions of the teeth of the sawtooth portion 312 and the tooth grooves between the two teeth are the same as the extending direction of the first sealing portion 310, that is, a plurality of strip-shaped areas are formed at the connection position of the first sealing member 300 and the first connecting plate 120, a secondary sealing and water-proof effect can be effectively achieved.

In another embodiment, the second sealing portion 320 includes two symmetrically disposed protrusions 321, one end of each of the two protrusions 321 is connected, the other end of each of the two protrusions 321 is bent toward a side away from the other protrusion 321, the two protrusions 321 respectively abut against the air conditioning unit 200, and the two protrusions 321 and the air conditioning unit 200 enclose to form the second deformation cavity 302. The volume of the second deformable cavity 302 can be changed by changing the compression amount of the protrusion 321 and the distance between the two protrusions 321, so that the protrusion 321 is further convenient to be attached to the second connecting plate 230.

In another embodiment, the sealing structure further includes a connector 240, the connector 240 is fixedly disposed on the air conditioning unit 200 and surrounds the outside of the second air inlet 210, and one end of the first sealing member 300 is connected to the connector 240. The connecting member 240 has a groove 241 on one side facing the body support frame 100, and the protrusion 321 is inserted and fixed in the groove 241. In this embodiment, the protrusion 321 is a solid structure and has a certain rigidity. The protrusion 321 is inserted and fixed in the groove 241, which plays a role in positioning the first sealing element 300, and can effectively prevent the position of the first sealing element 300 from moving when the first connecting plate 120 and the second connecting plate 230 clamp the first sealing element 300, thereby improving the sealing effect.

In another embodiment, the air supply opening 211 and the air return opening 212 are rectangular, and the corresponding connecting member 240 is annular rectangular. A baffle 2111 connected to the second connection plate 230 is received in the air blowing port 211 to divide the air blowing port 211 into two air blowing port regions, and a connection rod 242 connected to the baffle 2111 is provided on a connection member 240 corresponding to the air blowing port 211.

In another embodiment, the second sealing member 420 includes a third sealing portion 421 and a fourth sealing portion 422 connected to each other, the first fixing member 410 is connected to the third sealing portion 421, and the fourth sealing portion 422 abuts against the vehicle body support frame 100. The third sealing portion 421 has an accommodating groove 4211 on a side opposite to the first fixing member 410, one end of the first fixing member 410 away from the air conditioning unit 200 is accommodated in the accommodating groove 4211, and the fourth sealing portion 422 is recessed toward a side close to the third sealing portion 421 and forms a third deformation chamber 423 with the vehicle body support frame 100. Specifically, one end of the bending portion 4112 away from the connecting portion 4111 is accommodated in the accommodating groove 4211 and is inserted into the third sealing portion 421, and the fourth sealing portion 422 abuts against the first connecting plate 120. This can further improve the sealing property between the second seal 420 and the bent portion 4112, thereby further improving the sealing property at the top position of the first seal 300. Meanwhile, the third sealing portion 421 further includes a tooth-shaped structure 4212 received in the receiving groove 4211. The tooth structure 4212 is attached to the bending portion 4112, so as to further improve the sealing property between the second sealing element 420 and the bending portion 4112. The volume of third deformation chamber 423 can be supported by kink 4112 according to second sealing member 420 and is located the compression capacity behind first connecting plate 120 and change to make the laminating better of fourth sealing member 422 and first connecting plate 120, when improving leakproofness, can improve the scope of assembly tolerance, reduced the machining precision, and then reduced manufacturing cost.

In another embodiment, the fourth seal portion 422 includes a body 4221 and two symmetrically disposed bosses 4222. In this embodiment, the extending direction of the boss 4222 is the same as the extending direction of the fourth seal portion 422. Specifically, one end of the boss 4222 is connected to the body 4221, the other end of the boss 4222 abuts against the vehicle body support frame 100, and the body 4221, the boss 4222 and the vehicle body support frame 100 enclose to form the third deformation cavity 423. The volume of the third deformation chamber 423 may be changed by changing the compression amount of the boss 4222 and the distance between the two bosses 4222, which further facilitates the fitting of the boss 4222 with the first connection plate 120.

In one embodiment, a portion of the body 4221 between the two bosses 4222 abuts the vehicle body support bracket 100. This can further improve the sealing property between the fourth sealing portion 422 and the first connection plate 120. A fourth deformation cavity 4223 is arranged in the body 4221. The volume of the fourth deformation cavity 4223 can be changed according to the compression amount of the second sealing member 420 after being abutted to the first connection plate 120 by the bending portion 4112, so that the body 4221 is better attached to the first connection plate 120, and the sealing performance is further improved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the utility model is not limited by the scope of the appended claims.

Claims

1. A sealing structure, comprising:

the air inlet is arranged on the vehicle body support frame;

2. The seal structure of claim 1, wherein the blocking assembly includes a first fixing member and a second sealing member, the first fixing member is fixedly connected to the air conditioning unit at one end thereof and connected to the second sealing member at the other end thereof, and the second sealing member is connected to the vehicle body support bracket at an end thereof remote from the first fixing member.

3. The seal structure of claim 2, wherein the first fixing member includes a horizontal fixing portion and vertical fixing portions disposed at opposite ends of the horizontal fixing portion, the vertical fixing portions form an included angle with the horizontal fixing portion, and the second sealing member is connected to the horizontal fixing portion.

4. The sealing structure according to claim 3, wherein the horizontal fixing portion includes a connecting portion connected to the air conditioning unit and a bent portion extending from the connecting portion to the vehicle body support frame in a bent manner, and the second sealing member is interposed between the bent portion and the vehicle body support frame.

5. A sealing structure according to any one of claims 1 to 4, wherein the first sealing member comprises a first sealing portion and a second sealing portion which are connected, the first sealing portion abuts against the vehicle body support frame, and the second sealing portion abuts against the air conditioning unit.

6. The seal structure according to claim 5, wherein the first seal portion is recessed toward a side close to the second seal portion and encloses with the vehicle body support frame to form a first deformable cavity, and the second seal portion is recessed toward a side close to the first seal portion and encloses with the air conditioning unit to form a second deformable cavity.

7. The seal structure according to claim 6, wherein a serration is provided on the first seal portion, and the first seal portion abuts against the vehicle body support bracket through the serration.

8. The sealing structure according to claim 6, wherein the second sealing portion includes two symmetrically disposed convex portions, one end of each of the two convex portions is connected, the other end of each of the two convex portions is bent toward a side away from the other convex portion, the two convex portions are respectively abutted against the air conditioning unit, and the two convex portions and the air conditioning unit are enclosed to form the second deformable cavity.

9. The sealing structure of claim 8, further comprising a connecting member, wherein the connecting member is fixedly arranged on the air conditioning unit and surrounds the outside of the second air opening, and one end of the first sealing member is connected with the connecting member.

10. The seal structure according to claim 9, wherein the connecting member is provided with a groove on a side thereof facing the vehicle body support frame, and the protrusion is inserted and fixed in the groove.

11. The seal structure according to claim 1, wherein the vehicle body support frame includes a first connection plate provided obliquely, the first air opening being formed on the first connection plate, and the air conditioning unit includes a second connection plate provided opposite to the first connection plate, the second air opening being formed on the second connection plate.

12. A sealing structure according to any one of claims 2 to 4, wherein the second sealing member comprises a third sealing portion and a fourth sealing portion connected to each other, the first fixing member is connected to the third sealing portion, and the fourth sealing portion abuts against the vehicle body support frame.

13. The sealing structure according to claim 12, wherein a receiving groove is formed in a side of the third sealing portion opposite to the first fixing member, an end of the first fixing member away from the air conditioning unit is received in the receiving groove, and the fourth sealing portion is recessed toward a side close to the third sealing portion and forms a third deformation chamber with the vehicle body support frame.

14. The sealing structure according to claim 13, wherein the fourth sealing portion includes a body and two symmetrically disposed protrusions, one end of each protrusion is connected to the body, the other end of each protrusion abuts against the vehicle body support frame, and the body, the protrusions, and the vehicle body support frame enclose the third deformation chamber.