Sealing structure of B-pillar-free split car door and car

By using inflatable sealing strips in the B-pillarless doors, the problem of door opening sequence restrictions was solved, achieving convenient door operation and space utilization.

CN223919093UActive Publication Date: 2026-02-17HENNIGES (CHINA) AUTOMOTIVE SEALING SYST CO LTD +3
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Patent Information

Application Number
CN202520785905.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-23
Publication Date
2026-02-17
Estimated Expiration
2035-04-23

AI Technical Summary

Technical Problem

Existing models without B-pillars and split-door designs require opening the front and rear doors in sequence, causing inconvenience.

Method used

An inflatable first sealing strip is used, which connects to the second door when inflated to seal the door gap, and separates from the door when deflated, allowing either door to be opened independently.

Benefits of technology

It improves the ease of use of the car doors, eliminates restrictions on the order of opening, and increases the utilization of interior space.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223919093U_ABST
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Abstract

The utility model relates to the technical field of vehicle door sealing, in particular to a sealing structure of a B-pillar-free split vehicle door and a vehicle. A sealing structure of a B-pillar-free split car door comprises a first sealing strip, the first sealing strip is suitable for being arranged between a first car door and a second car door, the first sealing strip is provided with a first containing cavity, gas is contained in the first containing cavity, the first sealing strip is fixedly connected with the side wall of the first car door, and the first sealing strip is arranged in the first containing cavity in an inflation state; the first containing cavity of the first sealing strip is filled with gas so as to be connected with the second vehicle door. Or, the first sealing strip is fixedly connected with the side wall of the second vehicle door, and in the inflation state, the first containing cavity of the first sealing strip is inflated with gas so as to be connected with the first vehicle door. The utility model provides a sealing structure of a B-pillar-free opposite-opening vehicle door and a vehicle and aims to solve the problem that in the prior art, an opposite-opening vehicle model without a B pillar has the requirement for the opening sequence of a front vehicle door and a rear vehicle door, namely, one vehicle door needs to be opened firstly, and then the other vehicle door needs to be opened, so that use is inconvenient.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a door sealing technical field, concretely relates to a sealing structure of B -pillar -free double -leaf door and vehicle. BACKGROUND

[0002] In the modern society, the car is indispensable to a family, can break the public traffic limit, significantly shorten the commuting time, be convenient for the weekend outing, become the frequently used article of family members.

[0003] The double -leaf door type existing in the market has two kinds: having B -pillar and not having B -pillar, and because the double -leaf door type is opened between two doors, the double -leaf door type with B -pillar leads to the inconvenience of personnel in the process of getting on and off the car due to the position limitation of B -pillar. The double -leaf door type without B -pillar has the opening sequence requirement to the front and rear doors, that is, one door must be opened first, and then the other door is opened, leading to the inconvenience of personnel. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a sealing structure of B -pillar -free double -leaf door and vehicle to solve the problem of the double -leaf door type without B -pillar in the prior art, which has the opening sequence requirement to the front and rear doors, that is, one door must be opened first, and then the other door is opened, leading to the inconvenience of personnel.

[0005] In the first aspect, the utility model provides a sealing structure of B -pillar -free double -leaf door, which comprises:

[0006] The first sealing strip is suitable for being arranged between the first door and the second door, the first sealing strip is provided with a first accommodating cavity, the first accommodating cavity contains gas, the first sealing strip is fixedly connected with the side wall of the first door, in the inflation state, the first accommodating cavity of the first sealing strip is filled with gas to be connected with the second door, in the deflation state, the gas in the first accommodating cavity of the first sealing strip is extracted to be separated from the second door.

[0007] Or, the first sealing strip is fixedly connected with the side wall of the second door, in the inflation state, the first accommodating cavity of the first sealing strip is filled with gas to be connected with the first door, in the deflation state, the gas in the first accommodating cavity of the first sealing strip is extracted to be separated from the first door.

[0008] Through the above arrangement, when the inflation state, the first door and the second door are in the closed state, the first containing cavity of the first sealing strip is filled with gas to seal the gap between the first door and the second door, and the connection of the first door and the second door is realized by the connection of the first sealing strip and the second door. In the deflation state, the gas in the first containing cavity of the first sealing strip is extracted, so that the first sealing strip is separated from the second door, realizing the separation of the first door and the second door. After the two doors are separated, the user can open any one of the doors (the first door or the second door) without being affected by the opening sequence, greatly improving the convenience of use.

[0009] In an alternative embodiment, the first sealing strip is fixedly connected with the side wall of the door by bonding, clamping, threaded connection or welding.

[0010] In an alternative embodiment, the first sealing strip is adapted for first branch pipe connection, the first containing cavity is communicated with the first branch pipe, and the end of the first branch pipe away from the first sealing strip is connected with the air pump.

[0011] In an alternative embodiment, the first sealing strip comprises a fixed part and an expansion part, and the fixed part is adapted to be fixedly connected with the side wall of the door.

[0012] In an alternative embodiment, the expansion part is embedded with a reinforcing layer.

[0013] In an alternative embodiment, a second sealing strip is further included, and the second sealing strip and the first sealing strip are fixedly arranged on the same side.

[0014] In an alternative embodiment, the length of the second sealing strip is less than that of the first sealing strip, the lower end surface of the first sealing strip is flush with the bottom surface of the door, or the lower end surface of the first sealing strip is higher than the bottom surface of the door, the upper end surface of the first sealing strip is flush with the top surface of the door of the vehicle body, the lower end surface of the second sealing strip is flush with the bottom surface of the door, or the lower end surface of the second sealing strip is higher than the bottom surface of the door, and the upper end surface of the second sealing strip is flush with the bottom surface of the window.

[0015] In an alternative embodiment, a second branch pipe and a main pipe are further included, one end of the second branch pipe is communicated with the second sealing strip, the other end of the second branch pipe is communicated with the main pipe, and the main pipe is respectively communicated with the air pump and the first branch pipe.

[0016] In a second aspect, the utility model further provides a vehicle comprising the sealing structure of the B-column-free double-leaf door.

[0017] In an alternative embodiment, the first door and the second door are provided in a double-leaf arrangement, and the vehicle further comprises a first branch pipe, a second branch pipe, a main pipe and an air pump. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram showing the connection between the sealing structure of the B-pillarless door and the car door according to an embodiment of the present invention.

[0020] Figure 2 for Figure 1 The sectional view shown in the BB direction;

[0021] Figure 3 for Figure 1 The sectional view shown along direction AA;

[0022] Figure 4 This is a schematic diagram showing the connection between the first sealing strip and the first branch pipe in an embodiment of the present invention;

[0023] Figure 5 for Figure 4 The cross-sectional view shown in the CC direction.

[0024] Explanation of reference numerals in the attached drawings: 1. Second door; 2. First door; 201. Vehicle body; 202. Window; 203. Bottom surface; 3. First sealing strip; 301. Fixing part; 302. Expansion part; 303. Reinforcing layer; 304. First receiving cavity; 4. Second sealing strip; 5. First branch pipe; 6. Second branch pipe; 7. Main pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0027] According to the embodiment of the utility model, on the one hand, provide a kind of sealing structure of B-columnless split car door, it include: first sealing strip 3, first sealing strip 3 is suitable for being located between first door 2 and second door 1, first sealing strip 3 is equipped with first accommodating cavity 304, gas is contained in first accommodating cavity 304, first sealing strip 3 is fixedly connected with the side wall of first door 2, in the inflation state, gas is filled in the first accommodating cavity 304 of first sealing strip 3 to be connected with second door 1, in the air extraction state, the gas in the first accommodating cavity 304 of first sealing strip 3 is extracted, to separate with second door 1.

[0028] By the above-mentioned setting, when the inflation state, first door 2 and second door 1 are in closed state, the first accommodating cavity 304 of first sealing strip 3 is filled with gas to seal the gap between first door 2 and second door 1, and the connection of first door 2 and second door 1 is realized by the connection of first sealing strip 3 and second door 1. When the air extraction state, the gas in the first accommodating cavity 304 of first sealing strip 3 is extracted, so that the first sealing strip 3 is separated from the second door 1, the separation of the first door 2 and the second door 1 is realized, and the person can open any one of the two doors (first door 2 or second door 1) after the two doors are separated, without being affected by the opening order, greatly improving the convenience of use.

[0029] In one embodiment, as shown in Figure 2 , Figure 3 , the first sealing strip 3 is fixedly connected with the side wall of the door by bonding, to realize the fixed connection of the first sealing strip 3 and the first door 2.

[0030] In one embodiment, as shown in Figure 2 , Figure 3 , the first sealing strip 3 is adapted to be connected with the first branch pipe 5, the first accommodating cavity 304 is communicated with the first branch pipe 5, and the end of the first branch pipe 5 away from the first sealing strip 3 is connected with the air pump. By the setting of the air pump, it is convenient to fill the gas into the first accommodating cavity 304 of the first sealing strip 3 or extract the gas in the first accommodating cavity 304 through the first branch pipe 5.

[0031] In one embodiment, as shown in Figure 4 , Figure 5 , the first sealing strip 3 includes a fixed part 301 and an expansion part 302, and the fixed part 301 is adapted to be fixedly connected with the side wall of the door. The fixed part 301 is fixed with the first door 2 to realize the fixation of the first sealing strip 3, and the expansion part 302 deforms between inflation and air extraction to realize the functions of expansion in inflation and contraction in air extraction. In this embodiment, the first accommodating cavity 304 is formed by the fixed part 301 and the expansion part 302.

[0032] In one embodiment, as shown in Figure 4 ,Figure 5 As shown, the expansion part 302 is embedded with a reinforcing layer 303. The reinforcing layer 303 increases the toughness and strength of the expansion part 302, prolonging the service life of the expansion part 302. It should be noted that the reinforcing layer 303 is a fabric. It should be noted that in order to realize the connection with the second door 1, the surface of the expansion part 302 in contact with the second door 1 is provided with an adsorption layer, and the connection between the first sealing strip 3 and the second door 1 is realized through adsorption with the second door 1, ensuring the closing of the first door 2 and the second door 1 during the driving of the vehicle. Specifically, the material of the adsorption layer is a magnetic material, and the adsorption layer is arranged in intervals along the height direction of the door.

[0033] In one embodiment, as shown in Figure 1 , Figure 2 and Figure 3 , a second sealing strip 4 is further included, and the second sealing strip 4 and the first sealing strip 3 are fixedly arranged on the same side to cooperate with the first sealing strip 3 to further strengthen the sealing between the first door 2 and the second door 1. In this embodiment, the second sealing strip 4 is also fixedly connected with the first door 2. It should be noted that the structure of the second sealing strip 4 in this embodiment is completely the same as that of the first sealing strip 3, but the specific size can be the same or different (the size of the first sealing strip 3 and the second sealing strip 4 in this embodiment is different), and the second sealing strip 4 has a second accommodating cavity. It should be noted that the surface of the second sealing strip 4 in contact with the second door 1 is also provided with an adsorption layer. Specifically, the material of the adsorption layer is a magnetic material, and the adsorption layer is arranged in intervals along the height direction of the door.

[0034] In this embodiment, as shown in Figure 2 , the side walls of the first door 2 and the second door 1 are both ladder-shaped, and the first sealing strip 3 and the second sealing strip 4 are arranged on different planes respectively.

[0035] In one embodiment, as shown in Figure 1 , the length of the second sealing strip 4 is less than that of the first sealing strip 3, the lower end surface of the first sealing strip 3 is higher than the bottom surface 203 of the vehicle body 201 of the first door 2, and the upper end surface of the first sealing strip 3 is flush with the top surface of the window 202 of the door. The lower end surface of the second sealing strip 4 is higher than the bottom surface 203 of the vehicle body 201 of the first door 2, and the upper end surface of the second sealing strip 4 is flush with the bottom surface 203 of the window 202. The lower end surface of the first sealing strip 3 and the lower end surface of the second sealing strip 4 are respectively higher than the bottom surface 203 of the first door 2, so as to ensure that the two sealing strips will not be scratched with the chassis of the vehicle when the door is opened, prolonging the service life of the sealing strips. It should be noted that the lower end surface of the first sealing strip 3 and the lower end surface of the second sealing strip 4 are slightly higher than the bottom surface 203 of the door respectively, and the difference between them (the lower end surface of the sealing strip and the bottom surface 203 of the door) is in the range of 1-3 mm. The upper end surface of the first sealing strip 3 is flush with the top surface of the window 202 of the door, so as to ensure the sealing of the top of the door.

[0036] In one embodiment, such as Figure 2 As shown, it also includes a second branch pipe 6 and a main pipe 7. One end of the second branch pipe 6 is connected to the second sealing strip 4, and the other end of the second branch pipe 6 is connected to the main pipe 7. The main pipe 7 is connected to both the air pump and the first branch pipe 5. The air pump controls the inflation and deflation of the first receiving cavity 304 within the first sealing strip 3 by the main pipe 7 and the first branch pipe 5, and controls the inflation and deflation of the second receiving cavity within the second sealing strip 4 by the main pipe 7 and the second branch pipe 6. It should be noted that the inflation or deflation of the first receiving cavity 304 and the second receiving cavity are performed synchronously.

[0037] A vehicle comprising the aforementioned pillarless, openable door sealing structure.

[0038] In one embodiment, the vehicle also includes a first door 2 and a second door 1, which are configured to open opposite each other. It also includes a first branch pipe 5, a second branch pipe 6, a main pipe 7, and an air pump. The air pump is connected to the main pipe 7 to inflate or de-inflate the first branch pipe 5 and the second branch pipe 6. It should be noted that in this embodiment, the first door 2 is the rear door of the vehicle, and the second door 1 is the front door. The first door 2 and the second door 1 are configured to open opposite each other, meaning that opening and closing occurs between the first door 2 and the second door 1.

[0039] To achieve automatic control, sensors and controllers are also included, respectively located at the door handles of the first door 2 and the second door 1. The sensors detect the status of the first door 2 and the second door 1, and then transmit signals to the controller. The controller is connected to the air pump circuit and controls the air pump to perform air extraction and inflation. Specifically, the air pump is a small, silent air pump, which is located inside the first door to avoid exposing the tubing outside the door.

[0040] A method for using a sealing structure for opening car doors without a B-pillar includes the following steps:

[0041] (1) When the first door 2 and the second door 1 are closed, the air pump is in an inflatable state. The air pump inflates the first receiving cavity 304 of the first sealing strip 3 through the first branch pipe 5 and the second receiving cavity of the second sealing strip 4 through the second branch pipe 6, so that the adsorption layer of the first sealing strip 3 and the adsorption layer of the second sealing strip 4 are adsorbed to the second door 1 respectively, thereby closing the first door 2 and the second door 1 and ensuring that the two doors are closed when the vehicle is in motion or stationary.

[0042] (2) When the first door 2 and the second door 1 are converted from the closed state to the open state (a person opens the first door 2 or the second door 1), in the air extraction state, the air pump extracts air into the first containing cavity 304 of the first sealing strip 3 through the first branch pipe 5 and extracts air into the second containing cavity of the second sealing strip 4 through the second branch pipe 6, so that the adsorption layer of the first sealing strip 3 and the adsorption layer of the second sealing strip 4 are separated from the second door 1 respectively, the first door 2 or the second door 1 is facilitated to be opened, and the freedom of the person to get in and out is ensured.

[0043] The sealing structure of the B-column-free double-leaf door and the vehicle have the following advantages: (1) the structure for sealing the first door 2 and the second door 1 by the sealing strips is provided, the B column does not need to be used, the space of the vehicle body 201 can be increased, and the person gets on and off the vehicle conveniently; (2) during the whole process, the first door 2 and the second door 1 can be opened at will and are not affected by the opening sequence; and (3) the first sealing strip 3 and the second sealing strip 4 are respectively made by the extrusion process and composite extrusion, the reinforcing layer 303 is used as a fabric to increase the strength of the sealing strips, and it is ensured that the first sealing strip 3 and the second sealing strip 4 do not fail in the repeated inflation process.

[0044] As an alternative implementation, the first sealing strip 3 and the second sealing strip 4 can also be fixedly connected with the side wall of the second door 1 respectively, and in the inflation state, the first containing cavity 304 of the first sealing strip 3 is filled with gas to be connected with the first door 2.

[0045] As an alternative implementation, the first sealing strip 3 and the second sealing strip 4 can also be arranged on the same plane of the first door 2.

[0046] As an alternative implementation, the first sealing strip 3 and the second sealing strip 4 can also not be provided with the adsorption layer, and the side wall of the second door 1 is provided with a groove to be respectively connected with the expansion part 302 of the first sealing strip 3 and the expansion part 302 of the second sealing strip 4.

[0047] As an alternative implementation, the lower end surface of the first sealing strip 3 is flush with the bottom surface 203 of the first door 2, the second sealing strip 4 is flush with the bottom surface 203 of the first door 2, and the lower end surface of the first sealing strip 3 and the lower end surface of the second sealing strip 4 are respectively flush with the bottom surface 203 of the first door 2, so as to ensure the sealing performance of the bottom of the two sealing strips when sealing and ensure that the sealing performance of the bottom of the door is good.

[0048] As an alternative implementation, the lower end surface of the first sealing strip 3 is flush with the bottom surface 203 of the first door 2, the lower end surface of the second sealing strip 4 is higher than the bottom surface 203 of the first door 2, or the lower end surface of the first sealing strip 3 is higher than the bottom surface 203 of the first door 2, and the lower end surface of the second sealing strip 4 is flush with the bottom surface 203 of the first door 2.

[0049] As an alternative implementation, the first sealing strip 3 can also be fixedly connected with the side wall of the door (the first door 2 or the second door 1) through clamping (by setting a groove on the side of the door, clamping with the fixing part 301 of the first sealing strip 3), or threaded connection (fixing the first sealing strip 3 with the door through bolts), or welding (the fixing part 301 of the first sealing strip 3 is of metal material).

[0050] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A sealing structure of a B-pillar-less split door characterized by comprising: The application relates to a sealing structure of a B-pillar-free opposing door of a vehicle. The first sealing strip (3) is fixedly connected with the side wall of the first door (2) in the inflated state, and the first accommodating cavity (304) of the first sealing strip (3) is filled with gas to be connected with the second door (1); or the first sealing strip (3) is fixedly connected with the side wall of the second door (1) in the inflated state, and the first accommodating cavity (304) of the first sealing strip (3) is filled with gas to be connected with the first door (2). The first sealing strip (3) is fixedly connected with the side wall of the door by means of bonding, clamping, screwing or welding.

2. The sealing structure of a B-pillar-less opposing door of claim 1, wherein The first sealing strip (3) is adapted to be connected with the first branch pipe (5), the first accommodating cavity (304) is communicated with the first branch pipe (5), and the end of the first branch pipe (5) away from the first sealing strip (3) is connected with the air pump.

3. The sealing structure of a B-pillar-less opposing door of claim 2, wherein The first sealing strip (3) comprises a fixed part (301) and an expansion part (302), and the fixed part (301) is adapted to be fixedly connected with the side wall of the door.

4. The sealing structure of a B-pillar-less opposing door of claim 3, wherein The expansion part (302) is embedded with a reinforcing layer (303).

5. The seal structure of a B-pillar-less opposing door of claim 4, wherein The application further comprises a second sealing strip (4) which is fixedly arranged on the same side as the first sealing strip (3).

6. The sealing structure of a B-pillar-less opposing door of claim 3, wherein The length of the second sealing strip (4) is smaller than that of the first sealing strip (3), the lower end surface of the first sealing strip (3) is flush with the bottom surface (203) of the door, or the lower end surface of the first sealing strip (3) is higher than the bottom surface (203) of the door, the upper end surface of the first sealing strip (3) is flush with the top surface of the door of the vehicle body (201), the lower end surface of the second sealing strip (4) is flush with the bottom surface (203) of the door, or the lower end surface of the second sealing strip (4) is higher than the bottom surface (203) of the door, and the upper end surface of the second sealing strip (4) is flush with the bottom surface (203) of the window (202).

7. The seal structure of a B-pillar-less opposing door of claim 6, wherein The application further comprises a second branch pipe (6) and a main pipe (7), one end of the second branch pipe (6) is communicated with the second sealing strip (4), the other end of the second branch pipe (6) is communicated with the main pipe (7), and the main pipe (7) is respectively communicated with the air pump and the first branch pipe (5).

8. The sealing structure of a B-pillar-less opposing door of claim 7, wherein The application further comprises a sealing structure of a B-pillar-free opposing door of a vehicle.

9. A vehicle characterized by comprising: The application further comprises a first door (2) and a second door (1) which are opposingly arranged, and a first branch pipe (5), a second branch pipe (6), a main pipe (7) and an air pump.

10. The vehicle of claim 9, wherein, ​