Low-step seamless integrated outer water cutting

Abstract

This utility model belongs to the field of automotive door water-cutting technology, and provides a low-step, seamless, integrated external water-cutting strip. It includes a metal strip, a main body, a metal core, a door outer panel reinforcing plate, and a door outer panel. The main body and the metal core are laminated together. The upper part of the main body has an upper lip and a lower lip. The cross-sectional shape of the main body is an inverted "U" shape with an inverted U-shaped groove. The door outer panel reinforcing plate is inserted into the inverted U-shaped groove. The door outer panel is installed on the right side of the inverted "U" shape of the main body. The metal strip is installed between the upper and lower lip, creating a height difference with the door outer panel. The advantages of this utility model are that it reduces the water-cutting strip height to a minimum of 1.5mm, the upper and lower lips are recessed and hidden inwards, ensuring a consistent color for the strip's appearance, achieving a low-step, seamless, integrated side profile, and significantly improving the product's appearance quality and visual effect.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle door water cutting technology, specifically relating to a low-step seamless integrated external water cutter. Background Technology

[0002] Automotive exterior weatherstripping is installed on the outside of car doors and windows to achieve a seal between the door and the window glass, as well as a decorative function. As a functional component, it has functions such as waterproofing, airproofing, dustproofing, noise reduction, and glass clamping; as a decorative component, it serves to decorate the exposed door sheet metal.

[0003] With the development of water-cutting styling technology, extremely narrow and extremely wide designs are gradually becoming a design trend for some OEMs. In traditional low-step external water-cutting designs, the step difference between the bright strip and the sheet metal is usually controlled at more than 2.5mm. This type of structure often uses an integral aluminum bright strip combined with a transverse sealing strip, which has problems such as high assembly difficulty, complex process flow, high overall cost, and insufficient market competitiveness. In addition, the exposed sealing lip of the clamping part causes the black sealing strip and the metal bright strip to be color inconsistent, affecting the overall aesthetics of the vehicle. For example, an existing automotive door external water-cutting structure (CN112193041A) has two problems. First, the entire water-cutting shape and the outer door panel have a 4.5mm step in the Z direction, which is a large height difference and the appearance is not aesthetically pleasing. There is an exposed lip near the glass side, which has a color difference between the black and bright strip, affecting the overall appearance of the bright strip. There are also low-step external water-cutting structures that use an integral aluminum bright strip combined with a transverse sealing strip. The design also has several problems: the three sealing strips need to be made separately and then inserted into the aluminum bright strip, making the installation process complicated and inefficient; the aluminum bright strip is not only used for appearance decoration, but also extends downwards as part of the skeleton, resulting in a large amount of aluminum used and higher costs; the clamping lip is exposed and fills the space between the bright strip and the sheet metal, affecting the product's appearance; although the step between the bright strip and the sheet metal has been reduced to 2.5mm, the exposed sealing strip limits the space for further reduction in shape, and the design of minimizing the step cannot be achieved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a low-step seamless integrated external water cutter in view of the current situation of the prior art. It mainly adopts a composite structure of a double-pressed body and an aluminum bright strip, which effectively reduces material costs and achieves a minimum shape height of 1.5mm, forming a low-step, seamless integrated visual effect.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a low-step seamless integrated external water cutter, characterized in that it includes a metal bright strip, a body part, a metal core, a door outer panel reinforcing plate, and a door outer panel. The body part and the metal core are laminated together. The upper part of the body part has an upper lip and a lower lip. The cross-sectional shape of the body part is an inverted "U" shape and forms an inverted U-shaped groove. The door outer panel reinforcing plate is inserted into the inverted U-shaped groove. The door outer panel is installed on the right side of the inverted "U" shape of the body part. The metal bright strip is installed between the upper lip and the lower lip and forms a height difference with the door outer panel.

[0006] In one embodiment of the above-mentioned low-step, non-clamping lip external water cutter, the metal strip has a straight cross-sectional shape, and the inner side of the metal strip is provided with two L-shaped locking feet arranged opposite each other. There is a first locking lip and a second locking lip between the upper lip and the lower lip. The upper locking foot of the metal strip extends into the groove of the upper lip and the locking lip, and the lower locking foot of the metal strip is locked into the groove between the second locking lip and the lower lip.

[0007] In the aforementioned low-step, non-clamping lip outer water cutter, the lower lip is located below the bright strip appearance, and a sealing lip is provided on the side near the outer door panel. This lip fills the space between the bright metal strip and the rounded corner of the outer door panel, and is hidden under the bright metal strip and is not visible from the outside of the vehicle.

[0008] In the aforementioned low-step, non-clamping lip external water cutter, the upper lip is located on the left side of the L-shaped metal strip snap-fit ​​structure and close to the glass. The upper lip is also hidden beneath the metal strip and is not visible from outside the vehicle. When the glass rises or falls, the upper sealing lip deforms and comes into contact with this lip. To avoid friction and noise, a coarse-particle coating needs to be sprayed onto the contact area to reduce the coefficient of friction and decrease noise.

[0009] In the aforementioned low-step, non-clamping lip external water cutter, the metal core has an inverted "U" shaped cross-section, extending downwards on the side closest to the glass, with a positive "U" shaped barb at the end.

[0010] In the aforementioned low-step external water cutter without clamping lip, the main body has a clamping lip, which is located on the inner right side of the inverted U-shaped metal strip. The lip provides clamping force through elastic deformation and prevents the water cutter from coming out.

[0011] In the aforementioned low-step, non-clamping lip external water cutter, the inner left wall of the inverted U-shaped metal strip is provided with a positioning boss, and a support protrusion extends below the positioning boss. The door outer panel reinforcing plate contacts the positioning boss, the support protrusion, and the clamping lip.

[0012] As another approach, in the aforementioned low-step, non-clamping lip-type outer water-cutting section, the main body has positioning protrusions located on the right outer wall of the inverted U-shaped metal strip and in contact with the outer door panel. To avoid sticky, slippery noises caused by large-area rubber contact, the contact area between the protrusion and the sheet metal should be minimized; it is recommended that the contact surface size of a single protrusion be controlled within 0.5mm.

[0013] In the aforementioned low-step, non-clamping lip-type external water cutter, the main body also includes a support barb located on the outside of the "U"-shaped structure below the metal core. This support lip extends in the Y direction towards the door outer panel reinforcement plate and contacts the door outer panel reinforcement plate. The elastic deformation of the support lip provides support force, aiming to provide cross-sectional stability and prevent the water cutter from overturning during glass lifting.

[0014] Compared with existing technologies, the advantages of this utility model lie in its combined structure of a composite pressing body and an aluminum bright strip. Only the visible portion of the aluminum bright strip is retained, significantly reducing the amount of aluminum used and effectively lowering material costs. The sealing function and clamping structure are integrated into the composite pressing body, which also features a dedicated bright strip snap-fit ​​structure. The bright strip is assembled to the body via rotation, simplifying the assembly process, improving production efficiency, and reducing manufacturing costs and difficulty. Furthermore, this design reduces the water-cut profile height to a minimum of 1.5mm, with the upper and lower lips tapering inwards to ensure a consistent color for the bright strip, achieving a low-step, seamless, integrated side profile that significantly enhances the product's appearance and visual appeal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the low-step, non-clamping lip external water cutter;

[0016] Figure 2 This is a structural diagram of an alternative method for external water cutting with a low-step, non-clamping lip. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] In the diagram, the metal bright strip is 100; the main body is 200; the upper lip is 201; the lower lip is 202; the inverted U-shaped groove is 203; the first snap-fit ​​lip is 204; the second snap-fit ​​lip is 205; the positioning boss is 206; the clamping lip is 207; the supporting protrusion is 208; the glass sealing lip is 209; the supporting lip is 2010; the supporting barb is 2011; the positioning protrusion is 2012; the metal core is 300; the door outer panel reinforcement plate is 400; and the door outer panel is 500.

[0019] Example 1

[0020] like Figure 1 As shown, this low-step seamless integrated outer water-cutting device includes a metal bright strip 100, a body portion 200, a metal core 300, a door outer panel reinforcing plate 400, and a door outer panel 500. The body portion 200 and the metal core 300 are laminated together. The upper part of the body portion 200 has an upper lip 201 and a lower lip 202. The cross-sectional shape of the body portion 200 is an inverted "U" shape, forming an inverted U-shaped groove 203. The door outer panel reinforcing plate 400 is inserted into the inverted U-shaped groove 203. The outer door panel 500 is installed on the right side of the inverted "U" shape of the main body 200. The metal bright strip 100 is installed between the upper lip 201 and the lower lip 202 and forms a height difference with the outer door panel 500. Here, the main feature of this patent is to reduce the height of the water-cut shape to a minimum of 1.5mm. The upper lip 201 and the lower lip 202 are folded inward and hidden to ensure that the color of the bright strip is consistent. This achieves a low-step, seamless, and integrated side profile, which significantly improves the appearance quality and visual effect of the product.

[0021] Specifically, the metal strip 100 has a straight cross-sectional shape. The raw material of the metal strip 100 is aluminum profile, which is formed by equal cross-section extrusion process. The inner side of the metal strip 100 is provided with two L-shaped locking feet arranged opposite each other. There is a first locking lip 204 and a second locking lip 205 between the upper lip 201 and the lower lip 202. The upper locking foot of the metal strip 100 extends into the groove of the upper lip 201 and the locking lip. The metal strip 100 hooks the first locking lip 204 to form a pre-position. Then, the metal strip 100 is pressed clockwise. The lower locking part of the metal strip 100 contacts the guide slope of the second locking lip 205. With the elastic deformation of the second locking lip 205, the lower locking foot of the metal strip 100 is locked into the groove between the second locking lip 205 and the lower lip 202. After the metal strip 100 is pre-positioned, it can be automatically assembled by a special assembly machine.

[0022] The main body 200 mainly comprises a lower lip 202, an upper lip 201, a first engaging lip 204, a second engaging lip 205, a positioning boss 206, a clamping lip 207, a metal core 300, a support protrusion 208, and a glass sealing lip 209. The glass sealing lip 209 mainly consists of an upper sealing lip and a lower sealing lip. The glass sealing lip 209 has an interference fit with the vehicle window glass and undergoes elastic deformation upon contact with the glass, increasing the contact force between the sealing lip and the vehicle window glass, thus facilitating... For window cleaning, the upper lip of the glass seal has a bend that curves outwards. When the upper sealing lip contacts the window glass, the end of the bend contacts the upper lip 201, forming a closed outer surface without any openings or cavities. This reduces wind noise and also covers any openings, providing dust protection. Additionally, the side of the glass sealing lip 209 that mates with the window glass has a flocked layer; specifically, the upper sealing lip has an upper flocked layer on the side that mates with the window glass, and the lower sealing lip has a lower flocked layer on the side that mates with the window glass. The flocked layers are in contact with the window glass surface, preventing abnormal noises when the window is raised or lowered.

[0023] The lower lip 202 is located on the lower side of the bright strip appearance. A sealing lip is provided on the side near the outer door panel 500. This lip fills the space between the bright metal strip 100 and the rounded corner of the outer door panel 500, and is hidden under the bright metal strip 100 and is not visible from the outside of the vehicle. The upper lip 201 is located on the left side of the L-shaped snap-fit ​​structure of the bright metal strip 100 and on the side near the glass. The upper lip 201 is also hidden under the bright metal strip 100 and is not visible from the outside of the vehicle. When the glass rises or falls, the upper sealing lip deforms and contacts the lip. To avoid friction and abnormal noise, the contact area needs to be sprayed with a coarse-particle coating to reduce the coefficient of friction and reduce noise. The cross-sectional shape of the metal core 300 is an inverted "U" shape. It extends downward on the side near the glass and has a positive "U" shaped barb at the end. The main purpose of setting the metal core 300 is to enhance the overall rigidity of the product.

[0024] Additionally, the main body 200 has a clamping lip 207, which is located on the inner right side of the inverted U-shaped metal strip 100. The lip provides clamping force through elastic deformation and prevents the water cutter from coming out. The inner left side of the inverted U-shaped metal strip 100 has a positioning boss 206, and a support protrusion 208 extends below the positioning boss 206. The door outer panel reinforcing plate 400 contacts the positioning boss 206, the support protrusion 208, and the clamping lip 207, which provides support force to provide cross-sectional stability and prevent the water cutter from flipping during the glass lifting process.

[0025] Example 2

[0026] like Figure 2As shown, most of the structure of this patent is the same as that of Embodiment 1, except that the structure of the body part 200 is different. The body part 200 mainly includes a lower lip 202, an upper lip 201, a first snap-fit ​​lip 204, a second snap-fit ​​lip 205, a positioning protrusion 2012, a clamping lip 207, a metal core 300, a supporting lip 2010, a supporting barb 2011, and a glass sealing lip 209. The body part 200 has a positioning protrusion 2012, which is set on the right outer wall of the inverted U-shape of the metal bright strip 100 and contacts the outer panel 500 of the door. In order to avoid the problem of sticking and slipping noise caused by a large area of ​​rubber contact, the positioning protrusion should be minimized. The contact area between the protrusion 2012 and the sheet metal is recommended to be controlled within 0.5mm for the contact surface size of a single positioning protrusion 2012. It is also provided with two clamping lips 207, which provide clamping force through the elastic deformation of the lips to prevent the water cutter from coming out. The main body 200 also includes a support barb 2011, located on the outside of the "U"-shaped structure under the metal core 300, and extends into the Y direction toward the door outer panel reinforcement plate 400 to form a support lip 2010, which contacts the door outer panel reinforcement plate 400. Here, the elastic deformation of the support lip 2010 provides support force, which is intended to provide cross-sectional stability and prevent the water cutter from flipping during the glass lifting process.

[0027] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications to the described specific embodiments or adopt similar methods to replace them, but without departing from the scope defined by the spirit of this utility model.

Claims

1. A low-step seamless integrated external water cutter, characterized in that, It includes a metal bright strip, a main body, a metal core, a door outer panel reinforcement plate, and a door outer panel. The main body and the metal core are laminated together. The upper part of the main body has an upper lip and a lower lip. The cross-sectional shape of the main body is an inverted "U" shape and forms an inverted U-shaped groove. The door outer panel reinforcement plate is inserted into the inverted U-shaped groove. The door outer panel is installed on the right side of the inverted "U" shape of the main body. The metal bright strip is installed between the upper lip and the lower lip and forms a height difference with the door outer panel.

2. The low-step seamless integrated external water cutter according to claim 1, characterized in that, The metal strip has a straight cross-section and two L-shaped locking feet arranged opposite each other on its inner side. There is a first locking lip and a second locking lip between the upper lip and the lower lip. The upper locking foot of the metal strip extends into the groove of the upper lip and the locking lip, and the lower locking foot of the metal strip is locked into the groove between the second locking lip and the lower lip.

3. The low-step seamless integrated external water cutter according to claim 2, characterized in that, The lower lip is located below the bright strip and has a sealing lip on the side near the outer door panel. This lip fills the space between the bright metal strip and the rounded corner of the outer door panel and is hidden under the bright metal strip and is not visible from the outside of the vehicle.

4. The low-step seamless integrated external water cutter according to claim 2, characterized in that, The upper lip is located on the left side of the L-shaped metal strip snap-fit ​​structure and close to the glass. The upper lip is also hidden under the metal strip and is not visible from the outside of the vehicle.

5. The low-step seamless integrated external water cutter according to claim 1, characterized in that, The metal core has an inverted "U" shaped cross-section, extending downwards on the side closest to the glass, with a regular "U" shaped barb at the end.

6. The low-step seamless integrated external water cutter according to claim 1, characterized in that, The main body has a clamping lip, which is located on the inner right side of the inverted U-shaped metal strip. The lip provides clamping force through elastic deformation and prevents the water-cut strip from coming off.

7. The low-step seamless integrated external water cutter according to claim 1, characterized in that, The metal bright strip has a positioning boss on the inner left side of the inverted U-shaped inner wall, and a support protrusion extends below the positioning boss. The door outer panel reinforcing plate contacts the positioning boss, the support protrusion, and the clamping lip.

8. A low-step seamless integrated external water cutter according to claim 2, 3, or 4, characterized in that, The main body has positioning protrusions, which are located on the right outer wall of the inverted U-shaped metal strip and contact the outer panel of the door.

9. A low-step seamless integrated external water cutter according to claim 8, characterized in that, The main body also includes a support barb located on the outside of the "U"-shaped structure under the metal core, and extending a support lip in the Y direction toward the door outer panel reinforcement plate, and contacting the door outer panel reinforcement plate.

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