阅读说明：本技术 一种无框车门c柱密封结构 (Frameless door C post seal structure ) 是由 赵增发 闫立春 赵大山 杨松 赵建行 郭大洲 于 2021-09-24 设计创作，主要内容包括：本发明公开了一种无框车门C柱密封结构,包括C柱钣金和后门三角窗,C柱钣金和后门三角窗位于后车门后方,C柱钣金与车身的车顶纵梁相连,后门三角窗的玻璃前缘设有C柱密封条,C柱钣金与后门三角窗的玻璃间设有密封条导轨,C柱密封条安装在密封条导轨上,密封条导轨固定在后门三角窗的玻璃上,C柱密封条上设有第一唇边和第二唇边,关闭的后车门上的后门玻璃升起时,后门玻璃后缘与第一唇边挤压密封,后门玻璃内侧与第二唇边挤压密封。借助于本发明的技术方案,后车门关闭,后门玻璃升起时,第一唇边、第二唇边分别与后门玻璃配合,形成两道密封,加强密封效果,提升NVH性能,并提高C柱与车顶纵梁结合部的防水效果。(The invention discloses a C-pillar sealing structure of a frameless vehicle door, which comprises a C-pillar metal plate and a rear door triangular window, wherein the C-pillar metal plate and the rear door triangular window are positioned at the rear part of a rear vehicle door, the C-pillar metal plate is connected with a roof longitudinal beam of a vehicle body, a C-pillar sealing strip is arranged at the front edge of glass of the rear door triangular window, a sealing strip guide rail is arranged between the C-pillar metal plate and the glass of the rear door triangular window, the C-pillar sealing strip is installed on the sealing strip guide rail, the sealing strip guide rail is fixed on the glass of the rear door triangular window, a first lip edge and a second lip edge are arranged on the C-pillar sealing strip, when the closed rear vehicle door glass rises, the rear edge of the rear door glass is in extrusion sealing with the first lip edge, and the inner side of the rear door glass is in extrusion sealing with the second lip edge. By means of the technical scheme, when the rear door is closed and the rear door glass is lifted, the first lip edge and the second lip edge are respectively matched with the rear door glass to form two seals, the sealing effect is enhanced, the NVH performance is improved, and the waterproof effect of the joint of the C column and the roof side rail is improved.)

1. A frameless car door C-pillar sealing structure comprises a C-pillar metal plate (2) and a rear door triangular window (3), wherein the C-pillar metal plate (2) and the rear door triangular window (3) are positioned behind a rear car door (6), the C-pillar metal plate (2) is connected with a roof longitudinal beam (12) of a car body, a C-pillar sealing strip (4) is arranged at the front edge of glass of the rear door triangular window (3), the frameless car door C-pillar sealing structure is characterized in that a sealing strip guide rail (8) is arranged between the C-pillar metal plate (2) and the glass of the rear door triangular window (3), the C-pillar sealing strip (4) is installed on the sealing strip guide rail (8), the sealing strip guide rail (8) is fixed on the glass of the rear door triangular window (3), a first lip edge (401) and a second lip edge (402) are arranged on the C-pillar sealing strip (4), when the rear door glass (5) on the closed rear car door (6) rises, the rear door glass (5) is extruded and sealed with the first lip edge (401), the inner side of the rear door glass (5) is sealed with the second lip edge (402) in a pressing way.

2. The frameless car door C-pillar sealing structure of claim 1, wherein the first lip edge (401) and the second lip edge (402) are respectively positioned on two parallel side edges of the C-pillar sealing strip (4), the first lip edge (401) and the second lip edge (402) enclose an open C-pillar sealing strip cavity, a roof side rail (12) is provided with a side rail sealing strip (11), and an upper corner water guide piece (9) is arranged at the joint of the C-pillar sealing strip (4) and the side rail sealing strip (11).

3. The frameless vehicle door C-pillar sealing structure according to claim 2, wherein the upper corner water guide (9) comprises an upper corner water guide base body (901), a second lip butt joint edge (902) and a lower water retaining edge (903), the second lip butt joint edge (902) is butted with the C-pillar sealing strip (4), the lower water retaining edge (903) protrudes from the surface of the upper corner water guide base body (901), and the second lip butt joint edge (902) and the lower water retaining edge (903) form a corner-shaped groove.

4. The C-pillar seal structure of the frameless vehicle door according to claim 3, wherein the upper corner water guide base (901), the second lip butt joint edge (902) and the lower water blocking edge (903) are integrally formed.

5. The C-pillar seal structure for a frameless vehicle door of claim 3, wherein a drain hole (904) is formed at a lower end of the second lip butt joint edge (902) toward a side of the angled groove.

6. The C-pillar seal structure of the frameless vehicle door according to claim 2, wherein the upper corner water guide (9) and the C-pillar seal (4) are integrally connected by an over-molding structure.

7. The frameless door C-pillar sealing structure according to any one of claims 1 to 6, wherein a triangular window lower edge covering (301) is provided on the lower edge of the rear door triangular window (3), and a lower corner water guide (10) is provided on the lower end of the C-pillar sealing strip (4).

8. The frameless car door C-pillar sealing structure according to claim 7, wherein the lower corner water guide member (10) comprises a lower corner water guide member base body (1001), a lower corner first lip (1002) and a lower corner second lip (1003), an open lower corner cavity is enclosed by the lower corner water guide member base body (1001), the lower corner first lip (1002) and the lower corner second lip (1003), the lower corner cavity is communicated with the C-pillar sealing strip cavity, the lower corner first lip (1002) is in butt joint with the first lip (401), the lower corner second lip (1003) is in butt joint with the second lip (402), a water guide groove (1004) leading to the outside of the car is formed by the tail end of the lower corner first lip (1002) and the lower corner water guide member base body (1001), and the tail end of the lower corner second lip (1003) is in butt joint with the triangular window lower edge (301).

9. The C-pillar seal structure of the frameless vehicle door according to claim 8, wherein the lower corner water guide (10) and the C-pillar seal (4) are integrally connected by an over-molding structure.

10. The C-pillar sealing structure of the frameless vehicle door as defined in claim 7, wherein a lower triangular window bright strip is provided on an outer surface of the lower triangular window wrapping (301).

Technical Field

The invention relates to a vehicle body sealing structure, in particular to a C-pillar sealing structure of a frameless vehicle door.

Background

With the continuous development of the automobile market, the application of the frameless vehicle door is gradually increased, and the frameless vehicle door has the main problems of complex structure, poor NVH performance, poor sealing performance and the like, so that the phenomena of air leakage and rain leakage are frequently caused. The C column of the vehicle body corresponds to the rear seat, and the comfort perception of the rear passenger is directly influenced by the tightness of the C column. The frameless vehicle door in the market at present mainly takes an integral sealing structure as a main part, only one sealing is carried out, the whole circle of sealing is composed of a plurality of sections, the matching ratio of a C column and the environment is poor, the sealing series is few, and partial sealing is not tight, so that the NVH performance of the whole vehicle is influenced. In addition, an included angle is formed between the C column and the roof rail, the roof rail is long, in order to control cost and improve production efficiency, the long sealing strip on the roof rail is long and is generally processed and formed continuously in an extrusion mode and then cut, and the C column sealing strip is separately processed, so that when the roof rail sealing strip and the C column sealing strip are installed on a vehicle body, the front edge of the C column cannot be matched with the lower edge joint of the roof rail to form a seam, and if rainwater adhered to the front edge of the C column and the lower edge joint of the roof rail cannot be drained timely during raining, the rainwater is easy to remain and accumulate at the seam for a long time, and then flows out intermittently, flows out disorderly and easily enters the vehicle. Similarly, after the rear door glass descends, residual water drops on the rain-sprayed roof side rail may also flow down along the C-pillar, and further drop into the vehicle in an uncontrolled manner at any time, so that the environment in the vehicle is polluted, and bad experience is caused to users. There remains a need for improvements in existing C-column seal structures. The invention with the publication number of CN110920364A discloses a C-pillar sealing structure of an automobile rear door and window frame, which comprises a C-pillar decorative cover plate, a C-pillar sealing strip, a side wall angle window assembly and a rear door sheet metal assembly, wherein the C-pillar decorative cover plate is arranged on the rear door sheet metal assembly, the C-pillar sealing strip is clamped on the C-pillar decorative cover plate, the C-pillar sealing strip comprises a strip body, a clamping block, an auxiliary fixing block, a sealing mantle and an appearance mantle, the C-pillar decorative cover plate is provided with a clamping groove, the clamping block is clamped in the clamping groove, the auxiliary fixing block is clamped on the C-pillar decorative cover plate, the C-pillar sealing strip is fixed on the C-pillar decorative cover plate through an integrally extruded clamping structure, the whole C-pillar sealing strip and the cover plate are of equal cross section from top to bottom, the sealing performance is enhanced, meanwhile, the assembling process is more convenient, the whole C-pillar sealing strip is lapped and sealed with the side wall angle window assembly by the sealing mantle, thereby play the effect of manger plate, fender ash, promoted NVH performance and appearance quality simultaneously. However, the technical scheme of the invention does not relate to the waterproof improvement of the joint of the C column and the roof rail and the joint of the C column and the triangular window of the rear door.

Disclosure of Invention

The invention provides a C-column sealing structure of a frameless vehicle door, which can form reliable sealing between the frameless vehicle door and a C column, improve the NVH performance of a finished vehicle and improve the drainage effect of the joint of the C column and a roof rail in order to overcome the defects.

The technical scheme of the invention is as follows: the C-pillar sealing structure of the frameless vehicle door comprises a C-pillar metal plate and a rear door triangular window, wherein the C-pillar metal plate and the rear door triangular window are positioned at the rear part of a rear vehicle door, the C-pillar metal plate is connected with a roof longitudinal beam of a vehicle body, a C-pillar sealing strip is arranged at the front edge of glass of the rear door triangular window, a sealing strip guide rail is arranged between the C-pillar metal plate and the glass of the rear door triangular window, the C-pillar sealing strip is installed on the sealing strip guide rail, the sealing strip guide rail is fixed on the glass of the rear door triangular window, a first lip edge and a second lip edge are arranged on the C-pillar sealing strip, when the rear door glass on the closed rear vehicle door rises, the rear door glass rear edge is in extrusion sealing with the first lip edge, and the inner side of the rear door glass is in extrusion sealing with the second lip edge. The sealing strip guide rail is fixed on the glass of the back door triangular window, the rigidity of the sealing strip guide rail is improved by utilizing the rigidity of the glass, the C column sealing strip is arranged between the sealing strip guide rail and the back door triangular window glass, the C column sealing strip is ensured to be kept firm in the lifting process of the back door glass, and meanwhile, the first lip edge, the second lip edge and the back door glass form two seals to ensure the sealing property.

Preferably, the first lip edge and the second lip edge are respectively positioned on two parallel side edges of the C-pillar sealing strip, an open C-pillar sealing strip cavity is defined by the C-pillar sealing strip, the first lip edge and the second lip edge, a roof side rail sealing strip is arranged on the roof side rail, and an upper corner water guide piece is arranged at the joint of the C-pillar sealing strip and the side rail sealing strip. When the back door glass rises, the C column sealing strip cavity can allow the back door glass to enter, the C column sealing strip cavity can also enable the C column sealing strip to have better elastic deformation capacity, and the C column sealing strip cavity can also be used as a channel for water flow. The upper corner water guide piece is used for improving water flow guide and discharge of a joint part of the C-pillar sealing strip and the longitudinal beam sealing strip, and residual rainwater entering the joint part of the roof longitudinal beam sealing strip and the C-pillar sealing strip during windowing is prevented from flowing disorderly and entering a vehicle.

Preferably, the upper corner water guide piece comprises an upper corner water guide piece base body, a second lip butt joint edge and a lower water retaining edge, the second lip butt joint edge is in butt joint with the C column sealing strip, the lower water retaining edge protrudes out of the surface of the upper corner water guide piece base body, and the second lip butt joint edge and the lower water retaining edge form an angle-shaped groove. The upper corner water guide piece is connected with the C column sealing strip into a whole through the second lip edge butt joint edge, and plays a transitional connection role between the roof rail sealing strip and the C column sealing strip, so that the sealing effect between the roof rail and the C column is improved. The horn-shaped groove has better fluid collection and guide effects, so that rainwater flowing to a joint area of the roof side rail and the C column after the rear door glass descends can be better intercepted and directionally discharged, and the rainwater is prevented from entering the vehicle to pollute the environment in the vehicle.

Preferably, the upper corner water guide base body, the second lip butt joint edge, and the lower water blocking edge are integrally molded. The upper corner water guide piece is irregular in shape and is most conveniently produced in an integrated forming mode.

Preferably, the lower end of the second lip butt joint edge is provided with a drain hole facing the horn-shaped groove. The drain hole can in time arrange the rainwater in the C post sealing strip cavity, prevents that the rainwater from being detained and continue unordered flow on C post sealing strip surface.

Preferably, the upper corner water guide piece and the C-pillar sealing strip are connected into a whole through an over-molding structure. The upper corner water guide piece is connected with the C column sealing strip in a secondary forming mode, so that the upper corner water guide piece and the C column sealing strip are better integrated, the connection tightness of the upper corner water guide piece and the C column sealing strip is improved, and the improvement of NVH (noise, vibration and harshness) performance of a C column and even a whole vehicle is facilitated.

Preferably, the lower edge of the triangular window of the rear door is provided with a triangular window lower edge covering, and the lower end of the C-pillar sealing strip is provided with a lower corner water guide piece. The upper corner connecting water guide piece, the C column sealing strip and the lower corner connecting water guide piece form a drainage channel, the upper corner connecting water guide piece is the starting end of the drainage channel, the lower corner connecting water guide piece is the terminal end of the drainage channel, water flow introduced by the upper corner connecting water guide piece is guided to the lower corner connecting water guide piece through the cavity of the C column sealing strip, the lower corner connecting water guide piece is used for discharging the rainwater at the joint part of the roof longitudinal beam and the C column to the outside of the vehicle, and the rainwater at the joint part of the roof longitudinal beam sealing strip and the C column sealing strip is prevented from flowing disorderly and entering the vehicle.

Preferably, the lower corner water guide part comprises a lower corner water guide part base body, a lower corner first lip and a lower corner second lip, an open lower corner cavity is enclosed by the lower corner water guide part base body, the lower corner first lip and the lower corner second lip, the lower corner cavity is communicated with the C column sealing strip cavity, the lower corner first lip is in butt joint with the first lip, the lower corner second lip is in butt joint with the second lip, the tail end of the lower corner first lip and the lower corner water guide part base body form a water guide groove leading to the outside of the automobile, and the tail end of the lower corner second lip is in butt joint with the lower edge of the triangular window. The lower corner water guide piece with the structure can be reliably connected with peripheral components, and can realize the function of finally discharging rainwater at the joint of the roof side rail and the C column out of the automobile.

Preferably, the lower corner water guide piece and the C-pillar sealing strip are connected into a whole through an after-forming structure. The lower corner water guide piece and the C column sealing strip are connected in a secondary forming mode, so that the lower corner water guide piece and the C column sealing strip are better fused, the connection tightness of the lower corner water guide piece and the C column sealing strip is improved, and the improvement of NVH (noise, vibration and harshness) performance of a C column and even a whole vehicle is facilitated.

Preferably, a triangular window lower bright strip is arranged on the outer surface of the triangular window lower edge covering. The lower edge covering of the triangular window is fixed with the automobile body, the lower corner water guide piece and even the C-pillar sealing strip can be installed and fixed in an auxiliary mode, the lower bright strip of the triangular window covers the lower edge covering of the triangular window, the lower edge covering of the triangular window is shielded, and the automobile body is enabled to keep good appearance.

The invention has the beneficial effects that:

and NVH performance is improved. By means of the technical scheme, when the rear door is closed and the rear door glass rises, the first lip edge and the second lip edge are respectively matched with the rear door glass to form two seals, the sealing effect is enhanced, and the NVH performance is improved.

The waterproof effect of the joint of the C column and the roof side rail is improved. The automobile roof longitudinal beam sealing strip and the C column sealing strip are provided with the upper corner water guide piece and the lower corner water guide piece, so that water flow guide and discharge of a joint part of the C column sealing strip and the longitudinal beam sealing strip can be improved, and disordered flow of residual rainwater at the joint part of the roof longitudinal beam sealing strip and the C column sealing strip during windowing can be avoided, so that water entering an automobile can be effectively controlled, and pollution in the automobile can be reduced.

Drawings

FIG. 1 is a schematic view of a frameless vehicle door incorporating the present invention;

FIG. 2 is a schematic view of the position of the present invention on a frameless vehicle door;

FIG. 3 is a schematic view of a frameless vehicle door incorporating the present invention in an open position;

FIG. 4 is a schematic cross-sectional view of the C-pillar weatherstrip of the present invention;

FIG. 5 is a schematic view of the present invention in relation to the position of the roof rail and rear door triangular window;

FIG. 6 is a schematic view of the structure of the joint surface of the longitudinal beam sealing strip and the upper corner connecting water guide member in the present invention;

FIG. 7 is a schematic view of a matching structure of the longitudinal beam sealing strip and the upper corner connecting water guide member in the invention;

FIG. 8 is a schematic structural view of the upper corner water guide of the present invention;

FIG. 9 is a schematic view of the joint surface structure of the C-pillar sealing strip and the upper corner water guide member in the present invention;

FIG. 10 is a schematic view of a fitting structure of a C-pillar weather strip and an upper corner water guide member according to the present invention; .

In the figure, 1-side wall bright strip, 2-C column sheet metal, 3-rear door triangular window, 301-triangular window lower wrapping edge, 4-C column sealing strip, 401-first lip edge, 402-second lip edge, 5-rear door glass, 6-rear door, 7-outside water cutting, 8-sealing strip guide rail, 9-upper corner water guide piece, 901-upper corner water guide piece base body, 902-second lip edge butt joint, 903-lower water guide piece, 904-water drainage hole, 905-first lip edge butt joint, 10-lower corner water guide piece, 1001-lower corner water guide piece base body, 1002-lower corner first lip edge, 1003-lower corner second lip edge, 11-longitudinal beam sealing strip, 12-roof longitudinal beam, 13-door bright strip and 14-triangular window lower bright strip.

Detailed Description

The invention is further illustrated by the following specific embodiments in conjunction with the accompanying drawings.

Example (b):

as shown in fig. 1 to 10, a frameless vehicle door C-pillar sealing structure is arranged at the middle rear section of a vehicle body, and comprises a C-pillar metal plate 2, a rear door triangular window 3 and a C-pillar sealing strip 4, wherein the C-pillar metal plate 2 and the rear door triangular window 3 are positioned behind a rear vehicle door 6, the C-pillar metal plate 2 is connected with a roof longitudinal beam 12 of the vehicle body, a lifting rear door glass 5 is arranged on the rear vehicle door 6, an outer water cutter 7 is arranged on the upper edge of the rear vehicle door 6, a vehicle door bright strip 13 covers the outer water cutter 7, and a side wall bright strip 1 is arranged on the outer surface of the roof longitudinal beam 12. The C-pillar sealing strip 4 is arranged at the front edge of the glass of the rear door triangular window 3, a sealing strip guide rail 8 is arranged between the C-pillar metal plate 2 and the glass of the rear door triangular window 3, the C-pillar sealing strip 4 is installed on the sealing strip guide rail 8, the sealing strip guide rail 8 is fixed on the inner side surface of the glass of the rear door triangular window 3 through a secondary injection molding method, a first lip edge 401 and a second lip edge 402 are arranged on the C-pillar sealing strip 4, when the rear door glass 5 on the closed rear door 6 rises, the rear edge of the rear door glass 5 is in extrusion sealing with the first lip edge 401, and the inner side of the rear door glass 5 is in extrusion sealing with the second lip edge 402. The first and second lips 401, 402 are located on two parallel side edges of the C-pillar seal 4, respectively, and the C-pillar seal 4, the first lip 401 and the second lip 402 enclose an open C-pillar seal cavity. The roof side rail 12 is provided with a side rail sealing strip 11, and an upper corner water guide piece 9 is arranged at the joint of the upper end of the C-pillar sealing strip 4 and the side rail sealing strip 11. The upper corner water guide 9 includes an upper corner water guide base 901, a first lip butt joint edge 905, a second lip butt joint edge 902, and a lower water blocking edge 903. The first lip butt joint edge 905 is butted with the first lip 401 downward along the extending direction of the first lip 401, the second lip butt joint edge 902 is butted with the second lip 402 downward along the extending direction of the second lip 402, and the rear end surface of the longitudinal beam sealing strip 11 is in surface joint with the second lip butt joint edge 902. The lower water blocking edge 903 protrudes from the surface of the upper corner water guide base body 901, and the second lip butt joint edge 902 and the lower water blocking edge 903 form a corner-shaped groove. The upper corner connecting water guide base body 901, the second lip edge butt joint edge 902 and the lower water blocking edge 903 are integrally injection molded. The lower end of the second lip butt joint edge 902 is provided with a drainage hole 904 towards one side of the horn-shaped groove, and a drainage hole 905 is communicated with the cavity of the C-pillar sealing strip 4. The lower edge of the rear door triangular window 3 is provided with a triangular window lower edge covering 301, and the lower end of the C-pillar sealing strip 4 is provided with a lower corner water guide piece 10. The lower corner water guide 10 comprises a lower corner water guide base 1001, a lower corner first lip 1002 and a lower corner second lip 1003, the lower corner water guide base 1001, the lower corner first lip 1002 and the lower corner second lip 1003 enclose an open lower corner cavity, the lower corner cavity is communicated with the C column sealing strip cavity, the lower corner first lip 1002 is in butt joint with the first lip 401, the lower corner second lip 1003 is in butt joint with the second lip 402, and the tail end of the lower corner first lip 1002 and the lower corner water guide base 1001 form a water guide groove 1004. The tail end of the lower corner second lip 1003 is cut to form a plane end face, the front end face of the triangular window lower edge covering 301 is also a plane, and the tail end face of the lower corner second lip 1003 is attached to the front end face of the triangular window lower edge covering 301, so that the lower corner second lip 1003 is in butt joint with the triangular window lower edge covering 301. The upper corner water guide piece 9 and the lower corner water guide piece 10 are connected with the C column sealing strip 4 into a whole through a secondary forming structure, during production, the C column sealing strip 4 is extruded and formed, then straight matching surfaces are respectively cut at the upper end and the lower end, then the C column sealing strip 4 is placed into an injection mold, the upper corner water guide piece 9 and the lower corner water guide piece 10 are respectively injection molded at the two ends of the C column sealing strip 4, and therefore a combination of the C column sealing strip 4, the upper corner water guide piece 9 and the lower corner water guide piece 10 is generated. The outer surface of the triangular window lower edge covering 301 is provided with a triangular window lower bright strip 14, and the triangular window lower bright strip 14 and the vehicle door bright strip 13 are positioned on the same straight line.

When the rear door 6 is closed and the rear door glass 5 is lifted, the first lip edge 401, the second lip edge 402 and the rear door glass 5 form two seals to ensure the sealing property. The upper corner water guide member 9, the C-pillar sealing strip 4 and the lower corner water guide member 10 form a drainage channel, the upper corner water guide member 9 is the starting end of the drainage channel, and the lower corner water guide member 10 is the terminal end of the drainage channel. When the vehicle is in a rainy state, the arched shape of the roof side rail 12 has a guiding effect on rainwater falling on the roof side rail, the rainwater can flow to the bottom end of the roof side rail 12 along with the arched shape of the roof side rail 12, and when the vehicle runs, airflow can assist the rainwater to flow to the rear end of the roof side rail 12, so that the rainwater storage amount of the joint part of the roof side rail 12 and the C column is far more than that of other parts of the door. When the roof is opened, rainwater at the joint of the roof side rail 12 and the C column flows along the surfaces of the side rail sealing strip 11 and the second lip butt joint edge 902, reaches the surface of the upper joint angle water guiding piece base body 901, is gradually guided by the angle-shaped groove, and directionally flows into the drain hole 904, water flow introduced by the drain hole 904 is guided to the lower joint angle water guiding piece 10 through the cavity of the C column sealing strip, and is discharged to the outside of the vehicle by the lower joint angle water guiding piece 10, so that the rainwater at the joint of the roof side rail 12 and the C column sealing strip 4 is timely drained, the residual water at the joint of the side rail sealing strip 11 and the C column sealing strip 4 is prevented from flowing disorderly, and the phenomenon that excessive residual rainwater enters the vehicle to pollute the environment in the vehicle is avoided.