Sealing device for an automobile air conditioning case and a firewall, and automobile comprising same

Abstract

The application provides a sealing device for an automobile air conditioner box and a firewall and an automobile comprising the same. The sealing device comprises a first clamping body, a second clamping body arranged oppositely to the first clamping body, and a connecting body arranged between the first clamping body and the second clamping body. The connecting body is arranged in a communication hole of the firewall, and the first clamping body and the second clamping body are arranged on two sides of the firewall respectively. The sealing device is an independent component, has good sealing effect, and is helpful to simplify the installation operation of the air conditioner box and improve work efficiency. In particular, the sealing device does not generate adverse force on the instrument panel, thereby ensuring the normality and safety of the instrument panel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobile engineering, and particularly relates to a sealing device for an automobile air conditioner box and a firewall and an automobile comprising the same. BACKGROUND

[0002] Air conditioner box pipeline valves in the automobile passenger cabin, such as heating water pipes, thermal expansion valves, etc., need to pass through the firewall and be connected with parts such as compressors and heat exchangers in the engine compartment. Therefore, corresponding openings need to be made on the firewall. When the vehicle is driven in water, the water splashed by the tires will directly impact on the firewall, so the openings of the firewall must be sealed against water, otherwise the water will directly enter the passenger cabin through the openings, thereby causing the automobile to be dirty and even affecting the connection of the circuit and causing safety hazards.

[0003] At present, the conventional sealing method for the openings of the firewall is to realize the sealing by means of interference compression of the foam provided with the air conditioner box and the metal plate of the firewall and interference wrapping of the foam and the outer circle of the pipeline valve. However, this sealing method has some problems. For example, the air conditioner box is integrated in the instrument panel assembly of the vehicle. During the assembly of the vehicle, the instrument panel assembly is horizontally pushed from the rear to the front of the vehicle by the production line tool, and is fixed by matching with the mounting pin holes and other structures on the vehicle body. The air conditioner box is also matched with the openings of the firewall according to this installation method. Since the sealing foam on the air conditioner box is interference-fitted with the metal plate, the foam will generate a reverse force on the instrument panel assembly after being compressed, thereby preventing the instrument panel assembly from moving forward. As a result, the horizontal installation force in the front direction during the installation of the instrument panel assembly is too large, which affects the installation efficiency. The reverse force of the foam also causes the local deformation of the instrument panel assembly, and the matching with the fixed features of the vehicle or other parts is poor, thereby causing the assembly failure. However, the density and compression interference amount of the foam cannot be too small, otherwise the sealing effect cannot be achieved.

[0004] Therefore, it is necessary to design a sealing device for an automobile air conditioner box and a firewall, which can eliminate the potential problem of water intrusion and ensure the safety of the instrument panel assembly. SUMMARY

[0005] In view of some or all of the above technical problems in the prior art, the present application provides a sealing device for an automobile air conditioner box and a firewall and an automobile comprising the same. The sealing member of the sealing device for the automobile air conditioner box and the firewall is an independent component, and has good sealing effect. At the same time, the structure is helpful to simplify the installation operation of the air conditioner box and improve the work efficiency. In particular, the sealing device does not generate adverse force on the instrument panel assembly, thereby ensuring the normal and safety of the instrument panel assembly.

[0006] According to an aspect of the present application, there is provided a sealing device for an automobile air conditioner box and a firewall, comprising a sealing member, wherein the sealing member comprises:

[0007] a first clamping body,

[0008] a second clamping body disposed opposite to the first clamping body,

[0009] a connecting body disposed between the first clamping body and the second clamping body,

[0010] wherein the connecting body is configured to be disposed in a through hole of a firewall, and the first clamping body and the second clamping body are configured to be disposed on two sides of the firewall respectively.

[0011] In one embodiment, the first clamping body, the second clamping body and the connecting body are configured as an integrated member, and the first clamping body is configured to pass through the through hole of the firewall from the engine compartment side to the passenger compartment side.

[0012] In one embodiment, the cross-sectional area of the first clamping body increases from the free end to the fixed end.

[0013] In one embodiment, a plurality of sleeve-connected abutting rings are protrusively disposed on the abutting surface of the first clamping body opposite to the firewall.

[0014] In one embodiment, a sliding block is disposed on the outer wall of the free end of the first clamping body.

[0015] In one embodiment, a sound insulation pad is further included, which is closely disposed on the passenger compartment side of the firewall, and a receiving groove for accommodating the first clamping body is disposed on the sound insulation pad.

[0016] In one embodiment, a water guide rib is further included, which is disposed on the engine compartment side of the firewall, and the water guide rib is a protruding ring surrounding the through hole of the firewall, and a water guide groove for accommodating the water guide rib is disposed on the second clamping body.

[0017] In one embodiment, an arc-shaped ring is disposed on the free end of the water guide rib.

[0018] In one embodiment, the sealing member is made of foam.

[0019] According to another aspect of the present application, there is provided an automobile comprising:

[0020] a firewall having a through hole for passing through an engine compartment and a passenger compartment,

[0021] an air conditioning box disposed in the passenger compartment,

[0022] the sealing device for the air conditioning box and the firewall as described above,

[0023] a pipeline valve connected to the air conditioning box at one end and extending to the engine compartment through the through hole at the other end.

[0024] Compared with the prior art, the sealing device for the automobile air conditioner box and the firewall has the advantages that the sealing piece is an independent component, and is arranged on the firewall through the clamping of the first clamping body and the second clamping body on the two sides of the firewall, so that the problem of the local deformation of the instrument panel caused by the reverse force of the compressed foam on the instrument panel is avoided, and the problem is caused by the relatively large force applied through the end of the air conditioner box to directly compress the foam on the firewall panel. At the same time, the sealing piece penetrates the communication hole, and the sealing effect is reliable. In addition, the above structure helps to simplify the installation operation of the air conditioner box and improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, in which:

[0026] Figure 1 A cross-sectional view of a sealing device for an automobile air conditioner box and a firewall according to an embodiment of the present application is shown.

[0027] Figure 2 A left view of a communication hole and a water guide rib of a firewall of a sealing device for an automobile air conditioner box and a firewall according to an embodiment of the present application is shown.

[0028] Figure 3 A cross-sectional view of a water guide rib according to an embodiment of the present application is shown.

[0029] Figure 4 A cross-sectional view of a first abutting piece according to an embodiment of the present application is shown.

[0030] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn according to the actual proportions. DETAILED DESCRIPTION

[0031] In order to make the technical solutions and advantages of the present application clearer, the exemplary embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not an exhaustive enumeration of all embodiments. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0032] An embodiment of the present application proposes a sealing device for an automobile air conditioner box and a firewall. As shown in Figure 1As shown, the sealing device for the automobile air conditioner box and the firewall includes a sealing member 1. Specifically, the sealing member 1 includes a first clamping body 11, a second clamping body 12 and a connecting body 13. The second clamping body 12 is oppositely arranged with the first clamping body 11. The connecting body 13 is arranged between the first clamping body 11 and the second clamping body 12. After installation, the connecting body 13 is arranged in the communication hole 101 of the firewall 10, and the first clamping body 11 and the second clamping body 12 are respectively located on both sides of the firewall 10.

[0033] The sealing member 1 of the sealing device for the automobile air conditioner box 20 and the firewall 10 is an independent component, and is arranged on the firewall 10 in a penetrating and clamping manner through the first clamping body 11 and the second clamping body 12 respectively located on both sides of the firewall 10 and the connecting body 13 located in the communication hole 101. Thus, the sealing manner is more reliable. At the same time, this manner avoids the prior art of directly compressing the foam onto the firewall sheet metal by applying a relatively large force at the end of the air conditioner box. Further, the sealing member 1 of the sealing device of the present application does not generate a large reverse force on the air conditioner box 20, and does not cause local deformation of the instrument panel, thereby maintaining the safety of the instrument panel. At the same time, the sealing member 1 itself does not generate a large compression amount in the front-rear direction, thereby preventing a gap from being generated between the sealing surfaces of the sealing member 1 and the pipe valve connected to the air conditioner box 20, ensuring the sealing effect and avoiding water splashing into the passenger compartment 30. In addition, the sealing member 1 does not need to be arranged on the air conditioner box 20 in advance, and can be installed separately from the air conditioner box 20. During installation, the instrument panel is not restricted by the reverse force of the foam compression, thereby facilitating the installation operation of the air conditioner box and improving the work efficiency.

[0034] In one embodiment, the first clamping body 11, the second clamping body 12 and the connecting body 13 are configured as an integrated member. Preferably, the sealing member 1 is a foam part. The foam part is usually formed by foaming PU or EPDM. Thus, the sealing device of the present application does not change the existing part material, and the improvement cost is low. The first clamping body 11 is configured to penetrate from the engine compartment side to the passenger compartment side through the communication hole 101 of the firewall 10, and enter the passenger compartment 30 from the engine compartment 40. Preferably, the cross-sectional area of the first clamping body 11 decreases from the fixed end to the free end, so as to guide and more easily penetrate the communication hole 101 during installation. In order to facilitate production and manufacturing, for example, the free end of the first clamping body 11 can be chamfered.

[0035] In one embodiment, as shown in FIG. 2, the first clamping body 11 is configured to penetrate the communication hole 101 of the firewall 10 from the engine compartment side to the passenger compartment side, and the second clamping body 12 is configured to penetrate the communication hole 101 of the firewall 10 from the passenger compartment side to the engine compartment side. Figure 4As shown, a plurality of abutting rings 14 are protrudingly arranged on the abutting surface of the first clamping body 11 opposite to the firewall 10. The abutting ring 14 is easily deformed, and after installation, the first clamping body 11 abuts to the firewall, and the abutting ring 14 is easily deformed to form a sealing ring, improving the sealing effect. It can be understood that the abutting ring 14 is integrally manufactured with the first clamping body 11.

[0036] As shown, Figure 4 A sliding block is arranged on the free end of the first clamping body 11. The sliding block includes a sleeve-shaped sliding block body 15 and a rib piece 16 fixedly connected with the sliding block body 15. The sliding block is not circumferentially closed but has an opening, which can be one or a plurality of openings. The sliding block can be made of elastic metal, such as steel, and the rib piece 16 is configured as a plurality of elastic clamping claws circumferentially spaced apart. The effective outer diameter of the sliding block body 15 at the free end of the sealing device 1 is smaller than the effective inner diameter of the through hole 101. In the installation, the sliding block body 15 can be quickly positioned at the through hole 101, and the relative smooth contact between the sliding block body 15 and the inner wall of the through hole 101 guides the first clamping body 11 to pass through the through hole 101 more easily. As the first clamping body 11 is inserted into the through hole 101, the effective outer diameter of the first clamping body 11 is larger than the effective inner diameter of the through hole 101, so that the first clamping body 11 is deformed and radially shrinks, and the arrangement of the rib piece 16 does not affect the deformation and radial shrinkage of the first clamping body 11, and during the passing process, the rib piece 16 can be in relative smooth contact with the inner wall of the through hole 101, ensuring smooth passing.

[0037] The sealing device further includes a sound insulation pad 2. The sound insulation pad 2 is arranged in close contact on the passenger cabin side of the firewall 10. An accommodation groove 21 for accommodating the first clamping body 11 is arranged on the sound insulation pad 2. In the prior art, because the foam is directly formed on the front end surface of the air conditioning box 20, the sound insulation pad cannot be arranged at the through hole. In the arrangement of the present application, the sound insulation pad 2 can be arranged between the sealing device 1 and the air conditioning box 20. Therefore, the sealing device of the present application can further improve the noise resistance effect of the passenger cabin 30 and ensure the sound insulation effect of the passenger cabin 30 relative to the outside.

[0038] A water guide rib 102 is arranged on the engine cabin side of the firewall 10. As shown, Figure 3 The water guide rib 102 is configured as a protruding ring around the through hole 101. At the same time, a water guide groove 17 for accommodating the water guide rib 102 is arranged on the second clamping body 12. After installation, the water guide rib 102 is insertedly connected into the water guide groove 17. As shown, Figure 3As shown, preferably, an arc-shaped ring 103 is arranged at the free end of the water guide rib 102. After the water guide rib 102 at the outer periphery of the communication hole 101 is fitted into the water guide groove 17 of the sealing member 1, water at the outer periphery of the communication hole 101 can be completely isolated, so as to avoid water entering the passenger cabin 30 through the communication hole 101. The height of the water guide rib 102 plus the arc-shaped ring 103 can be greater than the depth of the corresponding water guide groove 17. After the first abutting member 11 of the sealing member 1 passes through the communication hole 101, the arc-shaped ring 103 is in interference fit with the groove bottom of the water guide groove 17, so as to form a reaction force in the direction of the vehicle head of the sealing member 1. The arc-shaped ring 103 can be smoothly transitioned to cooperate with the sealing member 1, so as to avoid crack propagation of the second abutting member 12 at the water guide groove 17. In addition, the water guide rib 102 also functions to position and limit the position of the sealing member 1.

[0039] The size of the connecting member 13 in the front-rear direction can be slightly smaller than the size of the communication hole 101 in the front-rear direction, so that the first abutting member 11 and the second abutting member 12 are tightly abutted to the two sides of the firewall 10 after the sealing member 1 is installed in place. Thus, the sealing member 1 can be stably arranged on the firewall 10. In particular, the above arrangement can cause the abutting ring 14 to be deformed and compressed, so as to form a seal.

[0040] The present application also provides an automobile. The automobile comprises the above firewall 10, the air conditioning box 20, the above sealing device for the air conditioning box and the firewall of the automobile, and the pipeline valve member 50. The air conditioning box 20 is located in the passenger cabin 30. One end of the pipeline valve member 50 is connected to the air conditioning box 20, and the other end extends to the engine cabin 40 after passing through the sound insulation member 2 and the sealing member 1.

[0041] In the present application, the seal 1 is an independent part, which is installed in the engine compartment 40 to avoid direct compression with the firewall 10. The seal 1 is installed from front to back in the engine compartment 40, and is inserted into the connecting hole 101 on the firewall 10. The opening on the seal 1 also matches the pipeline valve 50, and the outer contour is wrapped with interference. Since the second abutting piece 12 of the seal 1 is located in the engine compartment 40, the sound insulation pad 2 inside the passenger compartment 30 does not need to be drilled, and only needs to be vertically slotted at the position where the pipeline valve 50 passes through. Since the material of the sound insulation pad 2 is a soft felt, when the instrument panel is installed, the pipeline valve 50 can easily pass through the vertical slot on the sound insulation pad 2. Therefore, the surface of the seal 1 abuts against the firewall 10, and no additional force is applied to the seal 1. The sealing surface of the pipeline valve 50 and the seal 1 will not have a gap, and water splashing will not enter the passenger compartment 30. The installation of the instrument panel will not be affected by the compression reaction force of the foam, and the production line assembly efficiency is improved. In addition, after the water guide rib 102 is embedded in the water guide groove 17, the water outside the connecting hole 101 of the firewall 10 can be completely isolated, and the water flows directly along the water guide rib 102 and drops to the ground. At the same time, the sound insulation pad 2 in the passenger compartment 30 does not need to be drilled to open a hole, and the sound insulation performance is improved.

[0042] In the present application, the terms "front", "rear", "transverse", "longitudinal", "upper" and "lower" are all referred to the orientation of the vehicle body.

[0043] Although the preferred embodiments of the present application have been described, those skilled in the art who are familiar with the basic inventive concept can make additional changes and modifications to these embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and / or modifications falling within the scope of the present application, and any changes and / or modifications made to the embodiments according to the present application should be covered within the protection scope of the present application.

Claims

1. A sealing device for automotive air conditioning units and firewalls, characterized in that, The sealing device comprises a sealing member, the sealing member comprising: a first clamping body, a second clamping body arranged opposite to the first clamping body, a connecting body arranged between the first clamping body and the second clamping body, wherein the connecting body is arranged in a communication hole of a firewall, and the first clamping body and the second clamping body are arranged on two sides of the firewall respectively, the first clamping body, the second clamping body and the connecting body are configured as an integrated member, and the first clamping body is configured to pass through the communication hole of the firewall from the engine compartment side to the passenger compartment side, a sliding block is arranged on the free end outer wall of the first clamping body, the sliding block comprises a sleeve-shaped sliding block body and a rib piece fixedly connected with the sliding block body, the free end of the first clamping body is chamfered, the sliding block is made of elastic metal, the rib piece is configured as a plurality of elastic clamping claws arranged in a circumferential direction, the effective outer diameter of the sliding block body is smaller than the effective inner diameter of the communication hole, and as the first clamping body is inserted into the communication hole, the effective outer diameter of the first clamping body is larger than the effective inner diameter of the communication hole, so that the first clamping body is deformed and radially shrinks, the arrangement of the rib piece does not affect the deformation and radial shrinkage of the first clamping body, and during the passing process, the rib piece can be in smooth contact with the inner wall of the communication hole.

2. The sealing device for the automobile air conditioning box and firewall according to claim 1, characterized in that, The cross-sectional area of the first clamping body increases from the free end to the fixed end.

3. The sealing device for the automobile air conditioning box and the firewall according to claim 1, characterized in that, A plurality of sleeve-connected abutting rings are protrudingly arranged on the abutting surface of the first clamping body opposite to the firewall.

4. A sealing device for an automobile air conditioning case and a firewall according to any one of claims 1 to 3, characterized in that, A sound insulation pad is further arranged on the passenger compartment side of the firewall, and a containing groove for containing the first clamping body is arranged on the sound insulation pad.

5. The sealing device for an automobile air conditioning case and a firewall according to any one of claims 1 to 3, characterized by A water guide rib is further arranged on the engine compartment side of the firewall, the water guide rib is a protruding ring surrounding the communication hole of the firewall, and a water guide groove for containing the water guide rib is arranged on the second clamping body.

6. The sealing device for the automobile air conditioning box and the firewall according to claim 5, characterized in that, An arc-shaped ring is arranged on the free end of the water guide rib.

7. The sealing device for an automobile air conditioning case and a firewall according to any one of claims 1 to 3, characterized by The sealing member is made of foam.

8. An automobile characterized by comprising: The sealing device comprises: a firewall, the firewall being provided with a communication hole for passing through the engine compartment and the passenger compartment, an air conditioning box arranged in the passenger compartment, the sealing device for the air conditioning box of the automobile and the firewall according to any one of claims 1 to 7, a pipeline valve arranged at one end of the air conditioning box and extending to the engine compartment through the communication hole at the other end.

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