Frameless car door A column sealing device

Abstract

The invention provides a frameless vehicle door A column sealing device. An elastic piece is arranged on the inner side of the first end, in the length direction, of an outer decorative plate; the guide rail guide groove is positioned on the inner side of the outer decorative plate; the A column guide groove connecting corner comprises an embedded part located in the guide rail guide groove and an external part located outside the guide rail guide groove, the first end of the embedded part is located on the outer side wall of the guide rail guide groove and provided with an end lip edge, and the end lip edge abuts against the elastic piece to form interference sealing with the elastic piece; the second end of the embedded part extends around the inner wall of the guide rail guide groove to the inner side wall of the guide rail guide groove to define a sealing groove for the vehicle door glass to slide, and the inner side of the sealing groove is provided with a lip side assembly used for being in interference sealing with the vehicle door glass. According to the frameless vehicle door A column sealing device, the wind noise resistance of the frameless vehicle door is improved, and the airtight performance and the NVH performance of the whole vehicle are improved.

Description

Technical Field

[0001] This application relates to the technical field of frameless vehicle doors, and particularly to a sealing device for the A-pillar of a frameless vehicle door. Background Art

[0002] With the improvement of vehicle manufacturing technology and the changing needs of users, the application of frameless vehicle doors on vehicles has gradually increased. Since the sheet metal of the frameless vehicle door does not have an upper window frame structure, compared with framed vehicle doors, the airtight design requirements for the whole vehicle are more stringent. Especially in the A-pillar area, which is the windward side, the driver can easily perceive it during driving. Reducing the wind noise generated by the frameless vehicle door when the vehicle is driving at high speed has become a new research and development direction.

[0003] Currently, most frameless vehicle doors use a single-piece continuous sealing strip. The continuous sealing strip is formed by combining segmented sealing strips to form a complete circle of sealing, such as the sealing structures between the A-pillar guide groove and the triangular plastic decorative panel, and between the A-pillar guide groove and the front door lifting glass. Therefore, the structural design of each segment of the sealing strip is particularly crucial to improve the anti-wind noise performance of the frameless vehicle door, and to enhance the airtight performance and noise, vibration, and harshness (NVH) performance of the whole vehicle. Summary of the Invention

[0004] This application provides a sealing device for the A-pillar of a frameless vehicle door to solve the problems existing in the prior art, improve the anti-wind noise performance of the frameless vehicle door, and enhance the airtight performance and NVH performance of the whole vehicle.

[0005] The sealing device for the A-pillar of the frameless vehicle door provided by this application includes: an outer decorative panel, with an elastic member arranged on the inner side of the first end along the length direction; a guide rail groove, located inside the outer decorative panel; an A-pillar guide groove joint, including an embedded part located inside the guide rail groove and an external part located outside the guide rail groove. The first end of the embedded part is located on the outer side wall of the guide rail groove and is provided with an end lip, and the end lip abuts against the elastic member to form an interference seal with the elastic member; the second end of the embedded part extends around the inner wall of the guide rail groove to the inner side wall of the guide rail groove to define a sealing groove for the door glass to slide, and a lip component for interference sealing with the door glass is arranged inside the sealing groove.

[0006] Optionally, the sealing device for the A-pillar of the frameless vehicle door further includes an inner door panel. A clamping cavity is formed between the external part and the inner side wall of the guide rail groove. The first end of the inner door panel along the length direction is embedded in the clamping cavity, and the second end of the inner door panel along the length direction extends to be connected to the second end of the outer decorative panel along the length direction through an intermediate member.

[0007] Optionally, the frameless door A-pillar sealing device further includes a reinforcing plate, at least a part of the reinforcing plate is attached to the inner side of the inner door panel, a first end of the reinforcing plate in the length direction and the inner door panel are jointly embedded in the clamping cavity, and a second end of the reinforcing plate in the length direction and a second end of the inner door panel are jointly connected to the outer decorative plate through the intermediate member.

[0008] Optionally, the outer decorative plate, the A-pillar guide groove joint, the guide rail groove, the reinforcing plate and the intermediate member jointly enclose a closed cavity structure, and a foam is embedded in the cavity structure.

[0009] Optionally, a first guide groove protrusion protruding towards the inner side wall is provided on the outer side wall of the guide rail groove, and a second guide groove protrusion protruding towards the outer side wall is provided on the inner side wall of the guide rail groove; a first limiting lip and a second limiting lip are respectively provided at the bottom of the embedded part, the first limiting lip is located between the first guide groove protrusion and the bottom wall of the guide rail groove and abuts against the first guide groove protrusion, and the second limiting lip is located between the second guide groove protrusion and the bottom wall of the guide rail groove and abuts against the second guide groove protrusion.

[0010] Optionally, at least two inner protrusions arranged in the width direction are provided at the bottom of the embedded part.

[0011] Optionally, the lip assembly includes two inner lips located at the opening of the inner side wall of the embedded part, an outer lip located at the opening of the outer side wall of the embedded part, and a bottom lip located at the bottom of the inner side wall of the embedded part.

[0012] Optionally, among the two inner lips, one extends towards the bottom of the embedded part, and the other extends away from the bottom of the embedded part.

[0013] Optionally, the frameless door A-pillar sealing device further includes an inner decorative plate, a transition lip is provided at the junction of the embedded part and the peripheral part, and the transition lip abuts against the inner decorative plate.

[0014] Optionally, a gas passage is provided in the A-pillar guide groove joint, and the gas passage is connected to a vehicle air pump. Branches of the gas passage respectively extend to the inner lip and the outer lip, and openings communicating with the branches are provided on the inner lip and the outer lip where they abut against the side wall of the door glass; the frameless door A-pillar sealing device further includes a controller controllably connected to the vehicle air pump, and the controller is communicatively connected to the drive motor of the vehicle windshield wiper at the same time. When the drive motor drives the vehicle windshield wiper to move, the controller controls the vehicle air pump to move so as to form a positive pressure environment at the openings of the inner lip and the outer lip.

[0015] Adopting the above technical solution, the following beneficial effects are achieved:

[0016] The frameless door A-pillar sealing device provided by the present application realizes effective sealing between the A-pillar guide groove joint and the outer decorative panel through interference sealing between the end lip and the elastic member provided on the outer decorative panel, and realizes effective sealing between the A-pillar guide groove joint and the door glass through interference sealing between the lip assembly and the door glass, effectively improving the wind noise resistance performance of the frameless door, increasing the airtight performance and NVH performance of the whole vehicle, and enhancing the user experience. Description of the Drawings

[0017] The following will describe in detail the preferred embodiments of the present application with the help of the drawings to facilitate understanding of the purpose and advantages of the present application, where:

[0018] Figure 1 is an exploded view of the components in the A-pillar area where the frameless door A-pillar sealing device provided by an alternative embodiment of the present application is located.

[0019] Figure 2 is a schematic structural diagram of the assembled frameless door A-pillar sealing device provided by an alternative embodiment of the present application.

[0020] Figure 3 is Figure 2 the cross-section taken along A-A in

[0021] Figure 4 is a cross-sectional view of the frameless door A-pillar sealing device provided by an alternative embodiment of the present application.

[0022] Description of the Reference Numerals:

[0023] 1 - outer decorative panel, 10 - elastic member;

[0024] 2-A-pillar guide groove joint, 20-embedded part, 200-end lip, 201-first limit lip, 202-second limit lip, 203-inner bulge, 204-inner lip, 205-outer lip, 206-bottom lip, 207-coated lip, 21-peripheral part, 22-transition lip, 23-sealing groove, 24-clamping cavity;

[0025] 3-guide rail guide groove, 30-first guide groove bulge, 31-second guide groove bulge;

[0026] 4-reinforcing plate; 5-inner door panel; 6-inner decorative panel; 7-door glass; 8-cavity structure; 9-intermediate piece. Specific embodiments

[0027] The technical solution of the present invention will be further described in detail below through embodiments in combination with the accompanying drawings. The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0028] This application provides a frameless door A-pillar sealing device, including: an outer decorative panel 1, a guide rail guide groove 3, and an A-pillar guide groove joint 2.

[0029] Please refer to Figures 1 to 4 , the outer decorative panel 1 can be a triangular plastic decorative panel near the rearview mirror area, and an elastic member 10 is provided on the inner side of the first end of the outer decorative panel 1 along the length direction. Among them, the elastic member 10 can be an elastic member 10 with a sealing effect such as a rubber member or a silicone member, and is provided on the outer decorative panel 1 by an integral injection molding method.

[0030] The guide rail guide groove 3 is located inside the outer decorative panel 1. The A-pillar guide groove joint 2 includes an embedded part 20 located inside the guide rail guide groove 3 and a peripheral part 21 located outside the guide rail guide groove 3. The first end of the embedded part 20 is located on the outer side wall of the guide rail guide groove 3 and is provided with an end lip 200, and the end lip 200 abuts against the elastic member 10 to form an interference seal with the elastic member 10. Among them, the end lip 200 can be made of ethylene propylene diene monomer (EPDM rubber). The end lip 200 interferes with the position of the elastic member 10 on the outer decorative panel 1. By the abutment of two elastic components, a first sealing structure is formed to prevent air flow from entering the inside of the outer decorative panel 1 and the A-pillar guide groove joint 2.

[0031] In addition, please refer to Figure 3 andFigure 4 Moreover, the embedded part 20 is further provided with a covering lip 207 along a direction opposite to the end lip 200. The covering lip 207 and the inner side wall of the embedded part 20 define a clamping cavity for clamping the outer side wall of the guide rail groove 3, which further increases the connection stability between the A-pillar guide groove joint 2 and the guide rail groove 3, and at the same time plays a protective role for the outer side wall of the guide rail groove 3. In addition, when the end lip 200 has a tendency to displace toward the covering lip 207 under the extrusion of external air flow, the covering lip 207 also plays a reverse supporting role for the end lip 200, so that the end lip 200 stably seals and abuts against the elastic member 10.

[0032] The second end of the embedded part 20 extends around the inner wall of the guide rail groove 3 to the inner side wall of the guide rail groove 3 to define a sealing groove 23 for the door glass 7 to slide. A lip assembly for interference sealing with the door glass 7 is arranged inside the sealing groove 23, and the lip assembly ensures the sealing effect between the A-pillar guide groove joint 2 and the door glass 7. As Figure 3 and Figure 4 shown, the embedded part 20 and the peripheral part 21 are integrally formed, ensuring the overall sealing performance of the A-pillar guide groove joint 2.

[0033] The frameless door A-pillar sealing device provided by the present application realizes effective sealing between the A-pillar guide groove joint 2 and the outer decorative panel 1 through interference sealing between the end lip 200 and the elastic member 10 arranged on the outer decorative panel 1, and realizes effective sealing between the A-pillar guide groove joint 2 and the door glass 7 through interference sealing between the lip assembly and the door glass 7, effectively improving the wind noise resistance performance of the frameless door, increasing the airtightness performance and NVH performance of the whole vehicle, and enhancing the user experience.

[0034] In an alternative embodiment, the frameless door A-pillar sealing device further includes a door inner panel 5. A clamping cavity 24 is formed between the peripheral part 21 and the inner side wall of the guide rail groove 3. The first end of the door inner panel 5 in the length direction is embedded in the clamping cavity 24, and the second end of the door inner panel 5 in the length direction extends to be connected to the second end of the outer decorative panel 1 in the length direction through an intermediate member 9. As Figures 3 to 4 shown, the intermediate member 9 is installed on the exterior panel and has a card slot formed inside. The second end of the door inner panel 5 in the length direction extends into the card slot for positioning. Among them, the door inner panel 5 can be a sheet metal part, which has a stable and reliable structure and is convenient for forming.

[0035] In an alternative embodiment, the frameless door A-pillar sealing device further includes a reinforcing plate 4. The reinforcing plate 4 is at least partially attached to the inner side of the door inner panel 5. The first end of the reinforcing plate 4 in the length direction and the door inner panel 5 are jointly embedded in the clamping cavity 24. The second end of the reinforcing plate 4 in the length direction and the second end of the door inner panel 5 are jointly connected to the outer decorative panel 1 through the intermediate member 9. As Figure 1 , Figures 3 to 4 shown, the reinforcing plate 4 is beneficial to increasing the structural stability of the door inner panel 5. Among them, the intermediate member 9 can be an elastic member, fixed on the outer decorative panel 1, and plays a role in stably positioning the reinforcing plate 4 and the door inner panel 5.

[0036] In an alternative embodiment, the outer decorative panel 1, the A-pillar guide groove joint 2, the guide rail groove 3, the reinforcing plate 4, and the intermediate member 9 jointly enclose a closed cavity structure 8. As Figure 3 shown, the cavity structure 8 is filled with foam. The foam filled in the cavity structure 8 can form a second sealing structure, effectively blocking the airflow from entering the passenger compartment through the gap between the outer decorative panel 1 and the A-pillar guide groove joint 2, and further increasing the sealing effect between the outer decorative panel 1 and the A-pillar guide groove joint 2 through the double sealing structure.

[0037] In an alternative embodiment, a first guide groove protrusion 30 protruding towards the inner side wall is provided on the outer side wall of the guide rail groove 3, and a second guide groove protrusion 31 protruding towards the outer side wall is provided on the inner side wall of the guide rail groove 3; first limiting lips 201 and second limiting lips 202 are respectively provided at the bottom of the embedded part 20. The first limiting lips 201 are located between the first guide groove protrusion 30 and the bottom wall of the guide rail groove 3 and abut against the first guide groove protrusion 30, and the second limiting lips 202 are located between the second guide groove protrusion 31 and the bottom wall of the guide rail groove 3 and abut against the second guide groove protrusion 31. As Figures 3 to 4 shown, the first limiting lips 201 are engaged with the first guide groove protrusion 30, and the second limiting lips 202 are engaged with the second guide groove protrusion 31, thereby stably embedding the embedded part 20 in the guide rail groove 3 and increasing the structural stability of the embedded part 20.

[0038] In an alternative embodiment, at least two inner protrusions 203 arranged along the width direction are provided at the bottom of the embedded part 20. The inner protrusion 203 structure can form a gap and a barrier between the vehicle door glass 7 and the bottom of the embedded part 20, preventing the vehicle door glass 7 from sticking and making abnormal noises with the bottom of the embedded part 20 during the lifting and lowering process. Figures 3 to 4 The number of the inner protrusions 203 shown in

[0039] As Figures 3 to 4 shown, the inner protrusion 203 is an elastic member, which is formed on the embedded part 20 by integral injection molding. Compared with structures such as bonded fluff, it not only avoids the pollution caused by fluff shedding, has high cleanliness, but also has a stable and reliable structure and low assembly difficulty.

[0040] In an alternative embodiment, the lip component includes two inner lips 204 located at the opening of the inner side wall of the embedded part 20, an outer lip 205 located at the opening of the outer side wall of the embedded part 20, and a bottom lip 206 located at the bottom of the inner side wall of the embedded part 20. The two inner lips 204, the outer lip 205, and the bottom lip 206 form four interference sealing structures between the A-pillar guide groove joint 2 and the vehicle door glass 7, effectively improving the sealing effect.

[0041] Based on the above embodiments, high-performance wear-resistant coatings are provided on the regions of the two inner lips 204, the bottom lip 206, and the outer lip 205 that are in contact with the vehicle door glass 7 to prevent the A-pillar guide groove joint 2 from being worn during the lifting and lowering of the vehicle door glass 7, and at the same time avoid the occurrence of abnormal noise during the lifting and lowering of the vehicle door glass 7 due to wear of the A-pillar guide groove joint 2.

[0042] In an alternative embodiment, of the two inner lips 204, one extends in a direction close to the bottom of the embedded part 20, and the other extends in a direction away from the bottom of the embedded part 20. As Figures 3 to 4 shown, the two inner lips 204 are respectively abutted against the vehicle door glass 7 in opposite extending directions, forming two seals between the entrance of the A-pillar joint guide groove and the inner side of the vehicle door glass 7, further improving the sealing effect.

[0043] In an alternative embodiment, the frameless vehicle door A-pillar sealing device further includes an inner decorative panel 6. A transition lip 22 is provided at the junction of the embedded part 20 and the peripheral part 21, and the transition lip 22 abuts against the inner decorative panel 6. The transition lip 22 blocks and seals the gap between the A-pillar guide groove joint 2 and the inner decorative panel 6, not only playing a sealing role between the two, but also playing a fixing role for the inner decorative panel 6, reducing the vibration and noise of the inner decorative panel 6 and improving the overall vehicle quality.

[0044] Please refer to Figure 4 , two outer branch lips and inner branch lips with an acute or obtuse included angle extend from the end of the transition lip 4, and both the outer branch lips and the inner branch lips abut against the inner decorative panel 6, playing a role of double sealing and positioning.

[0045] In an alternative embodiment, a gas passage is provided in the A-pillar guide groove joint 2, and the gas passage is connected to a vehicle air pump. Branches of the gas passage respectively extend to the inner lip 204 and the outer lip 205, and openings communicating with the branches are provided on the side walls of the inner lip 204 and the outer lip 205 that abut against the side wall of the vehicle door glass 7. The frameless vehicle door A-pillar sealing device further includes a controller that is controllably connected to the vehicle air pump, and the controller is also communicatively connected to the drive motor of the vehicle windshield wiper. When the drive motor drives the vehicle windshield wiper to move, the controller controls the vehicle air pump to move so as to form a positive pressure environment at the openings of the inner lip 204 and the outer lip 205.

[0046] Among them, the vehicle air pump can be integrated in the engine compartment under the front engine hood, and the gas passage is connected to the vehicle air pump through an air pipe. The air pipe can extend along the A-pillar to connect the gas passage and the vehicle air pump.

[0047] In a rainy environment, the drive motor of the vehicle windshield wiper operates to drive the windshield wiper to scrape the rainwater on the front windshield or the rear windshield and at the same time transmit a rainwater signal to the controller. After receiving the rainwater signal, the controller starts the vehicle air pump, and the vehicle air pump drives the air flow to escape from the inner lip 204 and the outer lip 205 to form an air curtain to block the penetration of rainwater and prevent the rainwater from entering the A-pillar guide groove joint 2.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A frameless door A-pillar sealing device, characterized in that, Comprising: An outer decorative panel, with an elastic member provided inside the first end along the length direction; A guide rail groove, located inside the outer decorative panel; An A-pillar guide groove joint angle, including an embedded portion located inside the guide rail groove and an external portion located outside the guide rail groove. The first end of the embedded portion is located on the outer side wall of the guide rail groove and is provided with an end lip, and the end lip abuts against the elastic member to form an interference seal with the elastic member; the second end of the embedded portion extends around the inner wall of the guide rail groove to the inner side wall of the guide rail groove to define a sealing groove for the door glass to slide, and a lip component for interference sealing with the door glass is provided inside the sealing groove.

2. The frameless door A-pillar sealing device according to claim 1, wherein The frameless door A-pillar sealing device further includes a door inner panel. A clamping cavity is formed between the external portion and the inner side wall of the guide rail groove. The first end of the door inner panel along the length direction is embedded in the clamping cavity, and the second end of the door inner panel along the length direction extends to be connected to the second end of the outer decorative panel along the length direction through an intermediate member.

3. The frameless door A-pillar sealing device according to claim 2, characterized in that, The frameless door A-pillar sealing device further includes a reinforcing plate. The reinforcing plate is at least partially attached and disposed inside the door inner panel. The first end of the reinforcing plate along the length direction and the door inner panel are jointly embedded in the clamping cavity, and the second end of the reinforcing plate along the length direction and the second end of the door inner panel are jointly connected to the outer decorative panel through the intermediate member.

4. The frameless door A-pillar sealing device according to claim 3, wherein, The outer decorative panel, the A-pillar guide groove joint angle, the guide rail groove, the reinforcing plate, and the intermediate member jointly enclose a closed cavity structure, and a foam is embedded in the cavity structure.

5. The frameless door A-pillar sealing device according to claim 1, characterized in that, A first guide groove protrusion protruding towards the inner side wall is provided on the outer side wall of the guide rail groove, and a second guide groove protrusion protruding towards the outer side wall is provided on the inner side wall of the guide rail groove; The bottom of the embedded portion is respectively provided with a first limit lip and a second limit lip. The first limit lip is located between the first guide groove protrusion and the bottom wall of the guide rail groove and abuts against the first guide groove protrusion, and the second limit lip is located between the second guide groove protrusion and the bottom wall of the guide rail groove and abuts against the second guide groove protrusion.

6. The frameless door A-pillar sealing device according to claim 1, wherein, At least two inner protrusions arranged along the width direction are provided at the bottom of the embedded portion.

7. The frameless door A-pillar sealing device according to claim 1, characterized in that, The lip component includes two inner lips located at the opening of the inner side wall of the embedded portion, an outer lip located at the opening of the outer side wall of the embedded portion, and a bottom lip located at the bottom of the inner side wall of the embedded portion.

8. The frameless door A-pillar sealing device according to claim 1, characterized in that, Among the two inner lips, one extends towards the direction close to the bottom of the embedded portion, and the other extends towards the direction away from the bottom of the embedded portion.

9. The frameless door A-pillar sealing device according to claim 7, wherein The frameless door A-pillar sealing device further includes an inner decorative panel. A transition lip is provided at the junction of the embedded portion and the external portion, and the transition lip abuts against the inner decorative panel.

10. The frameless door A-pillar sealing device according to claim 7, characterized in that, A gas channel is opened in the A-pillar guide groove joint angle. The gas channel is connected to a vehicle air pump. Branches of the gas channel respectively extend to the inner lip and the outer lip, and openings communicating with the branches are opened on the side walls of the door glass where the inner lip and the outer lip abut. The frameless door A-pillar sealing device further includes a controller that is controllably connected to the vehicle air pump. The controller is also communicatively connected to the drive motor of the vehicle windshield wiper. When the drive motor drives the vehicle windshield wiper to move, the controller controls the vehicle air pump to move, so as to form a positive pressure environment at the openings of the inner lip and the outer lip.

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