Door opening section structure with napping material coated on surface of bubble tube

By covering the surface of the foam tube of the automotive sealing strip with a flocked material in the door opening cross-section structure, the problem of mismatch between the sealing strip and the interior trim is solved, achieving consistency and improved refinement of the interior trim, while simplifying the production process and reducing costs.

CN223720635UActive Publication Date: 2025-12-26ZHEJIANG XIANTONG RUBBER & PLASTIC CO LTD
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Patent Information

Application Number
CN202520271751.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-20
Publication Date
2025-12-26
Estimated Expiration
2035-02-20

AI Technical Summary

Technical Problem

The appearance of existing automotive sealing strips does not match the interior, affecting the interior's texture. Furthermore, the manufacturing process is complex and costly, failing to enhance the vehicle's refinement and consistency.

Method used

The door opening cross-section structure, which uses foam tubes covered with a brushed material, includes a dense glued joint, a covering lip, a sponge foam tube, and a brushed layer. The brushed material is applied to the outside of the sealing strip through a co-extrusion molding process to enhance the matching and texture with the interior.

Benefits of technology

The improved sealing strip quality enhances the consistency and refinement of the vehicle interior, simplifies the production process, and reduces costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a door opening section structure with the surface of a bubble tube coated with a napping material, which comprises a dense rubber clamping part, and a supporting steel belt is embedded in the inner side of the dense rubber clamping part; the covering lip edge is integrally formed on the edge of one side of the dense rubber clamping part; the non-dense rubber clamping part is arranged on one side of the covering lip edge, the sponge rubber bubble pipe is integrally formed on the other side of the non-dense rubber clamping part, the covering lip edge and one side of the non-dense rubber clamping part corresponding to the automotive interior facing are covered with a raising layer, one side of the raising layer extends to the area of the sponge rubber bubble pipe, and the raising layer is co-extruded on the outer sides of the covering lip edge, the sponge rubber bubble pipe and the non-dense rubber clamping part. And the automotive trim is connected, so that the trim texture and user experience can be improved.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile door hole sealing strip, and specifically relates to a door hole section structure with pull-woven material on the surface of a bubble tube. BACKGROUND

[0002] With the development of the automobile industry, the automobile manufacturing level is continuously improved, and people's requirements for vehicles are also higher and higher, and appearance, quality and performance are indispensable. As an accessory with waterproof function and decoration function, the automobile sealing strip is crucial in the whole vehicle evaluation, and in this environment, some innovative and exquisite sealing strip improvement schemes emerge as the times require. The existing product appearance bubble tube is black sponge rubber + black skeleton dense rubber, the overall black appearance, and the black color matching of the inner decoration lap is black, which can play a sealing and shielding role, but cannot improve the texture of the inner decoration, is mediocre and has no characteristics, thereby affecting the subsequent sales and use.

[0003] Some traditional sections also have some materials close to the color of the inner decoration attached to the surface of part of the section to improve the texture. Considering the section performance and sponge rubber foaming process, basically only the skeleton outside (dense rubber outside) is attached, and the visible area of the bubble tube is relatively large after being installed on the vehicle, which does not reach the expected state. In addition, the existing process steps are more, whether flocking or covering flocking needs additional process, which affects the final production efficiency and production cost.

[0004] Therefore, how to provide a door hole section structure with pull-woven material on the surface of a bubble tube which is simple to form and suitable for automobile inner decoration is a problem to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the utility model provides a door hole section structure with pull-woven material on the surface of a bubble tube, which not only improves the quality of the sealing strip itself, but also enhances the consistency of the vehicle interior and improves the delicacy of the vehicle.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a door hole section structure with pull-woven material on the surface of a bubble tube, comprising:

[0007] The dense rubber clamping portion is internally embedded with a supporting steel belt;

[0008] The covering lip is integrally formed on one side edge of the dense rubber clamping portion;

[0009] The sponge rubber bubble tube is integrally formed on the other side of the dense rubber clamping portion, one side of the covering lip, the dense rubber clamping portion and the sponge rubber bubble tube is covered with a napping layer, one side of the napping layer extends to the sponge rubber bubble tube area, and the napping layer is co-extruded on the outside of the covering lip, the sponge rubber bubble tube and the dense rubber clamping portion.

[0010] The utility model discloses the beneficial effect is: steel band is used to improve the static stiffness of dense rubber joint part, and the covering lip can cover the car and alloy strip and can also transition and link the interior panel of car, and sponge rubber bubble pipe can realize the sealing effect of the door, and the napping layer extends to the sponge bubble pipe area, and the texture of the napping layer is similar to cloth, and is closer to the car interior cloth art or the skin material, changes the traditional flocking process, and the flocking material is directly covered on the product outside by adopting the co-extrusion forming mode, and the flocking material is attached to the car interior, strengthens the consistency of the interior of vehicle under the premise of guaranteeing the sealing performance of product, and improves the delicate feeling of vehicle.

[0011] Preferably, the cross section of the dense rubber joint part is U-shaped, the inner side of the dense rubber joint part is provided with a shawl and a boss for enhancing the connecting force of the door stopper, and the covering lip is arc-shaped and integrally formed on the top edge of the dense rubber joint part.

[0012] Thus, the technical effect is that the U-shaped clamping structure and the internal boss realize the stable installation of the dense rubber joint part in the door hole area, the covering lip can cover the gap, thereby transitioning and linking the car interior, improving the consistency and delicate feeling of the car interior.

[0013] Preferably, the surface of the napping layer is formed with a simulated nap convex, and the edge of the simulated nap convex links the car interior panel.

[0014] Thus, the technical effect is that the simulated nap convex is formed by an external extruder, making the effect closer to the car interior material, thereby improving the delicate feeling and consistency of the interior.

[0015] Preferably, the napping layer is laid by napping rubber, and the napping rubber is composed of ethylene-propylene-diene rubber, ethylene-propylene-diene rubber, zinc oxide, stearic acid, dispersant, white carbon black, diatomite, paraffin oil, odor removal agent, sulfur, accelerator, microsphere foaming agent and color master.

[0016] Thus, the technical effect is that compared with the traditional flocking process, the product is co-extruded, and the napping area can be reasonably distributed.

[0017] Preferably, the thickness of the napping layer is 0.5-1.5mm.

[0018] Thus, the technical effect is that the thickness of the napping layer is as close as possible to the state of the car interior material.

[0019] Preferably, the outer side of the sponge rubber bubble pipe is provided with a protective film layer, and the protective film layer is water-based paint.

[0020] The technical effect is that the protective film layer outside the sponge tube avoids damage of the sponge tube by the impurities when the door is opened and closed, thereby prolonging the service life of the component. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A schematic view of a main body of a door hole section structure with a sponge tube surface covered with a napped material.

[0022] 1 compact rubber joint, 2 support steel belt, 3 covering lip, 4 sponge tube, 5 napping layer, 6 hood and boss, 7 groove area, 8 anti-fuzz boss. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Referring to the drawings of the present application, Figure 1 According to the door hole section structure with a sponge tube surface covered with a napped material in the embodiments of the present application, the door hole section structure comprises:

[0025] The compact rubber joint 1 is internally embedded with the support steel belt 2, and the support steel belt can ensure the stability and static strength of the sealing strip connection.

[0026] The covering lip 3 is integrally formed on one side edge of the compact rubber joint 1, and can shield accessories and transitionally connect the automobile interior.

[0027] The sponge tube 4 is integrally formed on the other side of the compact rubber joint 1, the covering lip 3 and the compact rubber joint 1 are covered with the napping layer 5 on one side corresponding to the automobile interior surface, one side of the napping layer 5 extends to the sponge tube 4 area, and the napping layer 5 is co-extruded on the outside of the covering lip 3, the sponge tube 4 and the compact rubber joint 1. The co-extrusion forming can purposefully set the area of the napping layer, the process is simple, the cost is lower than other napping processes, and the visible area of the sponge tube is shielded as much as possible.

[0028] In other embodiments, the compact rubber joint 1 has a door-shaped cross section, the compact rubber joint 1 is internally provided with the hood and boss 6 for connecting the body stopper, the hood and boss 6 are convenient for being clamped in the corresponding stopper of the door hole, and the covering lip 3 is arc-shaped and integrally formed on the top edge of the compact rubber joint 1.

[0029] In some other embodiments, there is a groove area 7 between the sponge tube 4 and the dense rubber joint 1, and the raised layer 5 covers the groove area 7. The groove area is the key to the compression deformation sealing of the sponge tube. The compression-deformed sponge tube can effectively isolate the sound or impurities between the inside and outside of the door.

[0030] In some other embodiments, the surface of the raised layer 5 is formed with a simulated nap protrusion 8. The edge of the simulated nap protrusion 8 is connected with the automotive interior panel, which enhances the consistency of the sealing strip and the automotive interior panel, thereby improving the overall quality and user experience of the vehicle.

[0031] It should be noted that the surface of the raised layer is a non-smooth surface. The color is dark gray, and the texture is similar to that of velvet. The product door hole sponge tube surface is provided with a raised layer, which is closer to the interior cloth or fur material. Under the premise of ensuring the sealing performance of the product, the consistency of the interior of the vehicle is strengthened, and the delicacy of the vehicle is improved.

[0032] In some other specific embodiments, the raised layer 5 is made of raised rubber. The raised rubber is composed of ethylene-propylene-diene rubber, ethylene-propylene-diene rubber, zinc oxide, stearic acid, dispersant, white carbon black, diatomite, paraffin oil, odor removal agent, sulfur, accelerator, microsphere foaming agent and color master.

[0033] The ratio can be ethylene-propylene-diene rubber KEP435: 60-80 parts, ethylene-propylene-diene rubber 2340M: 20-40 parts, zinc oxide: 5-7 parts, stearic acid: 1-2 parts, dispersant WB16: 1-3 parts, white carbon black: 20-40 parts, diatomite Silitin N86: 80-100 parts, paraffin oil: 30-50 parts, PEG-4000: 1-2 parts, odor removal agent JH-100: 2-4 parts, sulfur S-80: 1-1.4 parts, accelerator: 6.1-9.5 parts, microsphere foaming agent Expancel 930DU120: 5-7 parts, and color master: 3.5-4.5 parts.

[0034] In some other embodiments, the thickness of the raised layer 5 is 0.5-1.5 mm.

[0035] The outer side of the sponge tube 4 is provided with a protective film layer, which is a water-based paint, further protecting the use of the sponge tube and prolonging its service life.

[0036] The process flow of the product is as follows:

[0037] Steel belt pre-bending, material extrusion, spraying of water-based material, cutting, butt joint, and edge trimming.

[0038] For the device and use method disclosed in the embodiments, since they correspond to the method disclosed in the embodiments, the description is relatively simple, and the relevant part is described in the method part.

[0039] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A door opening section structure of a bubble tube surface covered velour material, characterized by, The utility model relates to a kind of automobile interior decorative panel, including: Compact rubber bonding part (1), the inner side of compact rubber bonding part (1) is embedded with support steel band (2); Covering lip (3), covering lip (3) is integrally formed in the side edge of compact rubber bonding part (1); Foam rubber bubble tube (4), foam rubber bubble tube (4) is integrally formed in the other side of compact rubber bonding part (1), covering lip (3), compact rubber bonding part (1) corresponding to the side of automobile interior decorative surface is covered with napped layer (5), the side of napped layer (5) extends to the area of foam rubber bubble tube (4), napped layer (5) is co-extruded in the outside of covering lip (3), foam rubber bubble tube (4) and compact rubber bonding part (1).

2. A door opening section structure of a tubular surface covering material according to claim 1, wherein The section of compact rubber bonding part (1) is U shape, the inner side of compact rubber bonding part (1) is provided with shawl and boss (6) for enhancing and door stop joint force, covering lip (3) is arc shape and integrally formed in the top edge of compact rubber bonding part (1).

3. A door opening section structure of a tubular surface covering material according to claim 1, wherein The surface of napped layer (5) is formed with imitation nap protrusion (8), the edge of imitation nap protrusion (8) is connected with automobile interior decorative panel.

4. A door opening section structure of a tubular surface covering velour material according to claim 3, wherein Napped layer (5) is laid by napping rubber, and the napping rubber is composed of ethylene-propylene-diene rubber, ethylene-propylene-diene rubber, zinc oxide, stearic acid, dispersing agent, white carbon black, diatomite, paraffin oil, odor removal agent, sulfur, accelerator, microsphere foaming agent and color master.

5. A door opening section structure of a tubular surface covering velour material according to claim 3, wherein The thickness of napped layer (5) is 0.5-1.5mm.

6. A door opening section structure of a tubular surface covering material according to claim 1, wherein The outside of foam rubber bubble tube (4) is provided with protective film layer, and the protective film layer is water-based paint.