A car door and automobile with semi-concealed water cutter

By introducing bubble-shaped deformation sections and sponge sections into the water-cutting structure, the fatigue damage caused by long-term deformation of the lip structure is solved, achieving better sealing and noise reduction effects and extending the service life of the water-cutting structure.

CN224427071UActive Publication Date: 2026-06-30WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD
Filing Date
2025-09-17
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The lip structure of traditional water-cutting structures is prone to fatigue damage after long-term deformation, resulting in loss of resilience and inability to effectively seal the car window glass.

Method used

The design incorporates a bubble-shaped deformation section that contacts the window glass, combined with a sponge section and a lip. The deformation section maintains a sealing effect during compression thanks to the elastic recovery ability of the sponge section, preventing fatigue damage to the lip connection end.

Benefits of technology

It improves the sealing performance and fatigue resistance of the water-cutting structure, ensures the sealing effect and noise reduction performance of the window glass, and extends the service life of the water-cutting structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model proposes a car door and automobile with a semi-concealed water-cutting mechanism, belonging to the field of automotive parts. It includes an outer door panel structure, a water-cutting body, a deformation section, and a window glass. One end of the water-cutting body is connected to the outer door panel structure, and the deformation section is located at the other end of the water-cutting body, with a cavity inside. The window glass is located on the side of the outer door panel structure closer to the vehicle interior. When the window glass is lowered and located inside the door, the deformation section blocks the top of the window glass, and the deformation section is in a relaxed state. When the window glass is raised from inside the door, the surface of the deformation section near the window glass abuts against the surface of the window glass facing outwards, causing the deformation section to deform under pressure, and the cavity volume shrinks. This utility model utilizes a bubble-shaped deformation section on the water-cutting body to contact the window glass surface. The bubble-shaped deformation section has better deformation recovery and fatigue damage resistance, and provides stronger sealing and resistance to the window glass. The bubble-shaped structure also has higher waterproof and sealing performance.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a car door and a car with a semi-concealed water cutter. Background Technology

[0002] The water-cutting strip on the car door is a rubber sealing strip in the window recess, located between the window glass and the door frame. It cuts away water droplets, fog, and dust from the glass surface when the window is raised or lowered, while also serving an aesthetic purpose. In recent years, car designs have become increasingly streamlined and minimalist, with a desire to reduce the width of the outer water-cutting trim and make it more refined, seamlessly integrating the trim with the door panel. Traditionally, the outer water-cutting trim is attached to the door panel along the downward direction of the glass, resulting in a relatively wide Z-axis and an angle difference between the trim and the window sill, which does not meet the overall styling requirements. Therefore, current mainstream designs for new energy vehicles adopt semi-concealed or fully concealed water-cutting structures. For example, Chinese patent CN117719314A discloses a frameless door semi-concealed outer water-cutting installation structure and door.

[0003] However, current water-cutting structures all achieve sealing by contacting the window glass with an inner tongue, also known as a lip. One end of this lip structure is connected to the water-cutting body, while the other end abuts against the window glass. When the window glass is raised or lowered, the connecting end of the lip structure will rotate and deform due to its own elasticity. After long-term deformation, the connecting end of the lip structure will suffer fatigue damage, causing the lip to lose its elasticity. Consequently, when the window glass is lowered, the lip cannot rebound to block the top of the window glass. Utility Model Content

[0004] In view of this, the present invention proposes a car door and a car with a semi-concealed water cutter, which is used to solve the problem that the connection end of the lip structure in the current water cutter structure will suffer fatigue damage after long-term deformation, causing the lip to lose its elasticity.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a car door with a semi-concealed water-cutting mechanism, including an outer door panel structure, a water-cutting body, a deformable part, and a window glass; one end of the water-cutting body is connected to the edge of the outer door panel structure, and the deformable part is located at the other end of the water-cutting body, with a cavity inside the deformable part; the window glass is located on the side of the outer door panel structure closer to the interior of the car; in the first state, the window glass is lowered and located inside the car door, the deformable part blocks the top of the window glass, and the deformable part is in a relaxed state; in the second state, the window glass is raised from inside the car door, the surface of the deformable part near the window glass abuts against the surface of the window glass facing outwards, the deformable part is deformed under pressure, and the volume of the cavity shrinks.

[0006] Based on the above technical solutions, preferably, the deformable part includes a lip and a sponge part; the lip is located on the side of the water-cutting body away from the outer door panel structure and close to the window glass, one end of the lip is connected to the water-cutting body, and when the lip is compressed, the other end of the lip rotates around the connection between the lip and the water-cutting body; the sponge part is located on the side of the water-cutting body away from the outer door panel structure and away from the window glass, and both ends of the sponge part are respectively connected to the water-cutting body and the end of the lip away from the water-cutting body, the sponge part, the lip, and the water-cutting body form a cavity, and the sponge part undergoes compression deformation when compressed.

[0007] Even more preferably, a flocked layer is applied to the surface of the lip that contacts the window glass.

[0008] Even more preferably, the lip edge and the water-cut body are integrally molded.

[0009] Based on the above technical solutions, the preferred option also includes a skeleton, which is embedded in the water-cutting body.

[0010] Based on the above technical solutions, a preferred embodiment also includes a bright trim strip, which is set on the surface of the water-cutting body facing outwards from the vehicle.

[0011] More preferably, a slot is provided at one end of the water cutter body that connects to the outer door panel structure; and an edge banding is provided at one end of the outer door panel structure that connects to the water cutter body, with the edge banding inserted into the slot.

[0012] More preferably, the extension direction of the edging portion intersects with the outer surface of the door panel structure; the outer surface of the bright trim strip is provided with a bevel at one end near the door panel structure, and the bevel is flush with the outer surface of the door panel structure.

[0013] More preferably, the slot is provided with a number of abutment strips, which are alternately arranged on both sides of the edging part facing the inside and outside of the vehicle. One end of the abutment strip is connected to the inner wall of the slot and the other end abuts against the outer surface of the edging part, so that the water cutter body is fixedly installed on the outer door panel structure.

[0014] On the other hand, this utility model also provides a car that adopts the above-mentioned door with a semi-concealed water-cutting feature.

[0015] The vehicle door and automobile with semi-concealed water cutter of this utility model have the following advantages over the prior art:

[0016] (1) The present invention has a bubble-shaped deformation part on the water-cutting body that contacts the surface of the window glass. The bubble-shaped deformation part has better deformation recovery ability and fatigue damage resistance, and has a stronger resistance and sealing ability to the window glass. The waterproof sealing performance of the bubble-shaped structure is also higher.

[0017] (2) The present invention uses a sponge part and a lip to form a bubble-shaped deformation part. During deformation, the connection between the lip and the water-cutting body undergoes bending deformation and the sponge part undergoes compression deformation. This not only makes the deformation part more elastic and restoring, but also ensures that even if the connection between the lip and the water-cutting body suffers fatigue damage and its elasticity is reduced, the deformation part can still have deformation capability through the elasticity of the sponge part, thus avoiding the water-cutting structure being unable to cooperate with the window glass. Attached Figure Description

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

[0019] Figure 1 This is a cross-sectional view of the vertical surface of the car door of this utility model;

[0020] Figure 2 This is a cross-sectional view of the vertical side of the car door of this utility model in another state;

[0021] Figure 3 This is a cross-sectional view of the vertical surface of the water-cutting structure of this utility model.

[0022] In the diagram: 1. Door outer panel structure; 11. Edge banding; 2. Water-cutting main body; 21. Abutment strip; 201. Slot; 3. Deformation part; 31. Lip; 32. Sponge part; 33. Flocking layer; 301. Cavity; 4. Window glass; 5. Frame; 6. Bright trim strip; 601. Bevel. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0029] like Figure 1 As shown, combined with Figure 2 The present invention relates to a car door with a semi-concealed water cutter, comprising an outer door panel structure 1, a water cutter body 2, a deformation part 3, and a window glass 4.

[0030] The water-cutting body 2 is generally located at the bottom edge of the car window and is divided into inner water-cutting and outer water-cutting. In this embodiment, the water-cutting body 2 refers to the outer water-cutting. One end of the water-cutting body 2 is connected to the edge of the door outer panel structure 1, and the deformation part 3 is located at the other end of the water-cutting body 2. A cavity 301 is opened inside the deformation part 3. The window glass 4 is located on the side of the door outer panel structure 1 that is close to the interior of the car. In the first state, the window glass 4 is lowered and located inside the car door, and the deformation part 3 blocks the top of the window glass 4 and is in a relaxed state. In the second state, the window glass 4 is raised from inside the car door, and the surface of the deformation part 3 near the window glass 4 abuts against the surface of the window glass 4 facing outward. The deformation part 3 is deformed under pressure, and the volume of the cavity 301 decreases. Currently, semi-concealed water-cutting devices have been applied in many vehicle models. Their main characteristic is that when a person observes the water-cutting position of the window horizontally, the width of the water-cutting strip in the Z direction is very narrow (i.e., semi-concealed), or even invisible (i.e., fully concealed). This embodiment mainly involves structural improvements to the tongue piece of the water-cutting structure that contacts the window glass 4. This embodiment improves the traditional strip-shaped, non-closed tongue piece into a bubble-shaped deformation part 3 with an internal cavity 301. When the deformation part 3 contacts and deforms against the window glass 4, it can distribute the strain force across the entire bubble structure. Compared to the traditional open tongue piece, it has better structural stability and less permanent compression deformation, thus significantly reducing the damage caused by deformation fatigue to the overall structure of the deformation part 3. During vehicle use, the deformation part 3 scrapes water off the outer surface of the glass more effectively. Simultaneously, the deformation part 3 can block sound transmission through its closed bubble-shaped structure, giving the water-cutting structure better sound insulation when the door glass is closed.

[0031] exist Figure 2 In one embodiment shown, the deformable portion 3 includes a lip 31 and a sponge portion 32.

[0032] The lip 31 is located on the side of the water-cutting body 2 away from the door panel structure 1, near the window glass 4. One end of the lip 31 is connected to the water-cutting body 2. The lip 31 is similar to the traditional open tongue structure. When the lip 31 is pressed, the other end of the lip 31 rotates around the connection between the lip 31 and the water-cutting body 2, and the free end of the lip 31 will abut against the window glass 4. The sponge part 32 is located on the side of the water-cutting body 2 away from the door panel structure 1, away from the window glass 4. The two ends of the sponge part 32 are respectively connected to the water-cutting body 2 and the end of the lip 31 away from the water-cutting body 2. The sponge part 32, the lip 31 and the water-cutting body 2 form a cavity 301. The sponge part 32 is compressed and deformed when pressed, thereby compressing the thickness of the entire bubble structure of the deformed part 3 to reduce the volume of the cavity 301. In this embodiment, the sponge part 32 mainly functions to compress and deform, ensuring that when the deformable part 3 and the window glass 4 come into contact, there is a strong resistance pressure between them, so that the lip 31 is tightly attached to the surface of the window glass 4, and it provides support for the overall structure of the deformable part 3. While the lip 31 is in contact with the window glass 4, its connection end with the water-cutting body 2 is rotatable, which can also provide a certain buffering effect for the window glass 4 when the car door is suddenly closed, so as to avoid the window glass 4 from producing impact noise.

[0033] exist Figure 3 In one embodiment shown, a flocked layer 33 is provided on the surface of the lip 31 that contacts the window glass 4, which can provide support and enhance the seal.

[0034] exist Figure 3 In one embodiment shown, the lip 31 is integrally formed with the water-cutting body 2. Both the lip 31 and the water-cutting body 2 are made of EPDM solid adhesive material to ensure that the water-cutting structure has a certain structural rigidity; the sponge part 32 is made of EPDM sponge material, which has good deformation ability and waterproof performance to prevent external water from entering the cavity 301.

[0035] exist Figure 3 In one embodiment shown, a frame 5 is also included, which is embedded within the water-cutting body 2. The frame 5 can be made of aluminum alloy or stainless steel. During production, the frame 5 can be co-extruded with the material of the water-cutting body 2 to ensure the overall rigidity of the water-cutting structure.

[0036] exist Figure 2 In one embodiment shown, a bright trim strip 6 is also included, which is disposed on the surface of the water-cutting body 2 facing outwards. The bright trim strip 6 is mainly made of lightweight materials such as plastic or aluminum alloy. Both ends of the bright trim strip 6 are snapped onto the outer surface of the water-cutting body 2. The main function of the bright trim strip 6 is to enhance the aesthetics of the vehicle's exterior and to provide a certain degree of protection for the water-cutting structure.

[0037] exist Figure 2In one embodiment shown, a slot 201 is provided at one end of the water-cutting body 2 that connects to the outer door panel structure 1; an edge-wrapping portion 11 is provided at the other end of the outer door panel structure 1 that connects to the water-cutting body 2, and the edge-wrapping portion 11 is inserted into the slot 201. The outer door panel structure 1 generally includes an outer door panel and a waistline reinforcing plate on its inner side. The window sill of the outer door panel and the waistline reinforcing plate are connected by an edge-wrapping, which forms the edge-wrapping portion 11. In this embodiment, inserting the edge-wrapping portion 11 into the slot 201 not only effectively connects the water-cutting body 2 and the outer door panel structure 1, but also wraps around the edge-wrapping portion 11 to form a protective structure.

[0038] exist Figure 2 In one embodiment shown, the extension direction of the edging portion 11 intersects with the outer surface of the door outer panel structure 1, generally forming a 70° angle, thus making the water-cutting structure a semi-concealed structure. The Z-direction space occupied by the semi-concealed water-cutting structure is reduced by about 50% compared with the traditional outer water-cutting structure. The Z-direction height of the bright trim strip 6 can be reduced by about 50% compared with the traditional outer water-cutting structure. Visually, the bright trim strip 6 is flatter, which meets the design requirements of the current mainstream aesthetic styling. A bevel 601 is provided on the outer surface of the bright trim strip 6 near the door outer panel structure 1. The bevel 601 is flush with the outer surface of the door outer panel structure 1, so that there is no surface difference or continuous abrupt change in the shape of the vehicle appearance, making the vehicle appearance more beautiful.

[0039] exist Figure 3 In one embodiment shown, a plurality of abutment strips 21 are arranged inside the slot 201. The plurality of abutment strips 21 are alternately arranged on both sides of the edging portion 11 facing the inside and outside of the vehicle. One end of the abutment strip 21 is connected to the inner wall of the slot 201 and the other end abuts against the outer surface of the edging portion 11, so as to tightly connect the water cutter body 2 with the sheet metal of the door outer panel structure 1, thereby achieving the purpose of fixing the water cutter body 2 on the door outer panel structure 1.

[0040] like Figure 1 As shown, combined with Figure 2 The present invention relates to a car that adopts a door with a semi-concealed water-cutting feature as described in any of the above embodiments.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle door having semi-concealed water cut, characterized by: It includes the outer panel structure (1), the water-cutting body (2), the deformation part (3), and the window glass (4); One end of the water-cutting body (2) is connected to the edge of the door outer panel structure (1), and the deformation part (3) is provided at the other end of the water-cutting body (2). A cavity (301) is provided inside the deformation part (3). The window glass (4) is located on the side of the door outer panel structure (1) closer to the interior of the vehicle; In the first state, the window glass (4) is lowered and located inside the car door, the deformable part (3) blocks the top of the window glass (4), and the deformable part (3) is in a relaxed state; In the second state, the window glass (4) is raised from inside the car door, and the surface of the deformable part (3) near the window glass (4) abuts against the surface of the window glass (4) facing outward. The deformable part (3) is deformed under pressure, and the volume of the cavity (301) is reduced.

2. A vehicle door having semi-concealed water cutting according to claim 1, characterized in that: The deformable part (3) includes a lip (31) and a sponge part (32); The lip (31) is located on the side of the water-cutting body (2) away from the door outer panel structure (1) and close to the window glass (4). One end of the lip (31) is connected to the water-cutting body (2). When the lip (31) is pressed, the other end of the lip (31) rotates around the connection between the lip (31) and the water-cutting body (2). The sponge part (32) is located on the side of the water-cutting body (2) away from the door outer panel structure (1) and away from the window glass (4). The two ends of the sponge part (32) are respectively connected to the water-cutting body (2) and the lip (31) away from the water-cutting body (2). The sponge part (32), the lip (31) and the water-cutting body (2) form a cavity (301). The sponge part (32) is compressed and deformed under pressure.

3. A car door with a semi-concealed water-cutting feature according to claim 2, characterized in that: The surface of the lip (31) that contacts the window glass (4) is covered with a flocked layer (33).

4. A car door with a semi-concealed water-cutting feature according to claim 2, characterized in that: The lip (31) is integrally formed with the water-cutting body (2).

5. A car door with a semi-concealed water cutter according to claim 1, characterized in that: It also includes a skeleton (5), which is embedded in the water-cutting body (2).

6. A car door with a semi-concealed water-cutting feature according to claim 1, characterized in that: It also includes a bright trim strip (6), which is disposed on the surface of the water-cutting body (2) facing outward.

7. A car door with a semi-concealed water-cutting feature according to claim 6, characterized in that: The water-cutting body (2) is connected to the door outer panel structure (1) at one end with a slot (201); the door outer panel structure (1) is connected to the water-cutting body (2) at one end with a binding part (11), which is inserted into the slot (201).

8. A car door with a semi-concealed water cutter according to claim 7, characterized in that: The extension direction of the edge band (11) is intersecting with the outer surface of the door panel structure (1); the outer surface of the bright trim strip (6) is provided with a bevel (601) at one end near the door panel structure (1), and the bevel (601) is flush with the outer surface of the door panel structure (1).

9. A car door with a semi-concealed water-cutting feature according to claim 7, characterized in that: The slot (201) is provided with a number of abutment strips (21), and the abutment strips (21) are alternately arranged on both sides of the edging part (11) facing the inside and outside of the vehicle. One end of the abutment strip (21) is connected to the inner wall of the slot (201) and the other end abuts against the outer surface of the edging part (11), so that the water cutter body (2) is fixedly installed on the door outer panel structure (1).

10. A car, characterized in that: The vehicle door with a semi-concealed water cutter as described in any one of claims 1 to 9.