A kind of upper decorative strip buckle suitable for aluminum sheet metal

Abstract

The present invention belongs to the technical field of automobile parts, and provides an upper decorative strip clip adapted to aluminum sheet metal, which is fixed in the cross section of the upper decorative strip, and includes a main body, a mounting and fixing structure, a plug-in structure, and a supporting structure; the mounting and fixing structure is located on the inner side of the main body, and the mounting and fixing structure is used to be fixed in the cross section of the upper decorative strip; the plug-in structure is located in the middle of the outer side of the main body, the outer side is opposite to the inner side, and the plug-in structure is used to connect with the sheet metal by plugging and unplugging; the supporting structure is located on the outer side of the main body and opposite to the inner side, and the sheet metal supporting structure cooperates with the sheet metal and is used to prevent rotation and shaking. The advantages of the present invention are simple structure, easy installation, reliable structure, product hardness HRC 42-50, surface treatment: Dacromet coating, insertion force with sheet metal is less than or equal to 40N, and extraction force with sheet metal is greater than or equal to 150N.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts assembly, and in particular relates to an upper decorative strip buckle adapted for aluminum sheet metal. Background Art

[0002] The upper trim is also called the door frame trim. It is fixed on the door frame when in use. It plays the role of fixing the mud groove, supporting the glass, sealing and reducing noise, preventing rain and dust, and decorating the appearance. It is one of the most important components of the automobile sealing system and automobile door system. With the current development of lightweight platform vehicles, automobile sheet metal is gradually tending towards the design of aluminum structure, making the current buckle structure used for steel sheet metal unsuitable for aluminum sheet metal. At present, the total thickness of the door outer panel and outer panel reinforcement plate of aluminum doors will reach 3.7mm, which is a huge difficulty in adapting the metal buckle structure. The shaking of the product and the weakening of the anti-deformation ability are huge challenges to the functionality of the door frame trim. There is no similar upper trim buckle that is suitable for aluminum door frame sheet metal on the current market. This patent is based on this need to develop an upper trim metal rib buckle that can be adapted to aluminum door frame sheet metal to meet the new functional requirements of the upper trim. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an upper decorative strip buckle which is simple in structure, easy to install, and reliable in structure and can be adapted to aluminum sheet metal in view of the current status of the prior art.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: an upper decorative strip buckle adapted to aluminum sheet metal, fixing the cross section of the upper decorative strip, characterized in that it includes:

[0005] ontology;

[0006] An installation and fixing structure is located on the inner side of the body, and the installation and fixing structure is used to be fixed in the section of the upper decorative strip;

[0007] The plug-in structure is located in the middle of the outer side of the body, the outer side is opposite to the inner side, and the plug-in structure is used for plug-in connection with the sheet metal;

[0008] The supporting structure is located on the outer side of the main body and is opposite to the inner side. The sheet metal supporting structure cooperates with the sheet metal and is used to prevent rotation and shaking.

[0009] In the above-mentioned upper decorative strip clip adapted for aluminum sheet metal, the installation and fixing structure includes side tongue pieces located on the two inner side surfaces of the main body and a limiting tongue piece in the middle. The side tongue pieces and the outer side surfaces of the main body have an installation gap. The side tongue pieces on both sides control the installation gap to ensure that the clip is assembled into the slot of the upper decorative strip through the force pressing of the side tongue pieces. The limiting tongue piece in the middle matches the cross-sectional space of the upper decorative strip through its size.

[0010] In the above-mentioned upper decorative strip buckle adapted for aluminum sheet metal, the side tongue piece includes a first side tongue piece and a second side tongue piece, the first side tongue piece has a clamping sharp corner, and the second side tongue piece has an arc clamping surface.

[0011] In the above-mentioned upper decorative strip clip adapted to aluminum sheet metal, the plug-in structure includes a middle tongue and fixed tongues on both sides, the middle tongue has a barb part, the barb part includes an integrally connected guide portion and a barb part, the barb part has a folded angle, the guide portion has a guide slope, and the plug-in space between the guide portion and the fixed tongue is used for plugging and unplugging connection with the sheet metal.

[0012] Here, the guide part controls the insertion force of the buckle to be smaller, and the hook part controls the withdrawal force of the buckle. The insertion and extraction force of the product can be adjusted by adjusting the guide angle and guide distance.

[0013] In the above-mentioned upper decorative strip clip adapted for aluminum sheet metal, the supporting structure includes a middle supporting rib and supporting ribs on both sides. The middle supporting rib and the supporting ribs on both sides stably fix the upper decorative strip on the sheet metal and prevent rotation and shaking, and the clamping force is adjusted by matching the interference fit.

[0014] In the above-mentioned upper decorative strip buckle adapted for aluminum sheet metal, an adjustment space is provided between the middle tongue piece and one of the fixed tongue pieces on one side, and a lower positioning head is provided on the inner side surface of the adjustment space.

[0015] Compared with the prior art, the advantages of the present invention are simple structure, convenient installation, reliable structure, product hardness HRC42-50, surface treatment: Dacromet coating, insertion force with sheet metal is less than or equal to 40N, and extraction force with sheet metal is greater than or equal to 150N. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall schematic diagram of the metal buckle;

[0017] Figure 2 It is the installation and fixing structure of the metal buckle;

[0018] Figure 3 It is the clamping structure of the metal buckle;

[0019] Figure 4 The utility model relates to a plug-in and pull-out structure of the metal buckle. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] In the figure, the upper decorative strip 1; the main body 2; the mounting and fixing structure 3; the plug-in structure 4; the supporting structure 5; the inner side surface 6 of the main body; the outer side surface 7 of the main body; the first side tongue piece 8; the second side tongue piece 9; the limiting tongue piece 10; the clamping sharp corner 11; the arc clamping surface 12; the middle tongue piece 13; the first side fixing tongue piece 14; the second side fixing tongue piece 15; the hook piece 16; the guide part 17; the hook part 18; the folded corner 19; the plug-in space 20; the supporting rib 21; the supporting rib 22; the adjustment space 23; the lower positioning head 24.

[0022] like Figure 1 As shown, the upper decorative strip clip adapted to aluminum sheet metal, in the cross section of the fixed upper decorative strip 1, mainly includes: a body 2, on which are formed an installation and fixing structure 3, a plug-in structure 4 and a supporting structure 5, wherein the installation and fixing structure 3 is located on the inner side 6 of the body, and the installation and fixing structure 3 is used to be fixed in the cross section of the upper decorative strip 1; the plug-in structure 4 is located in the middle of the outer side 7 of the body, the outer side is opposite to the inner side, the plug-in structure 4 is used for plugging and unplugging with the sheet metal, the supporting structure 5 is located on the outer side 7 of the body and is opposite to the inner side, the sheet metal supporting structure 5 cooperates with the sheet metal and is used to prevent rotation and shaking; wherein the installation and fixing structure 3, the supporting structure 5, and the plug-in structure 4 are all completed by punching and stamping of steel, and the product is completed after heat treatment and surface treatment, and its performance requirements include but are not limited to: use of spring steel SAE J403, steel thickness 0.5mm, tensile strength ≤640Mpa, yield strength ≤510Mpa, fracture elongation ≥21%, product hardness HRC 42-50, Surface treatment: Dacromet coating.

[0023] Specifically, if Figure 2 As shown, the installation and fixing structure 3 includes side tongues located on the two inner side surfaces of the body 2 and a limiting tongue 10 in the middle. The side tongues and the outer side surfaces 7 of the body have an installation gap. The side tongues on both sides control the installation gap to ensure that the buckle is assembled into the card slot of the upper decorative strip 1 by the force pressing of the side tongues. The limiting tongue 10 in the middle matches the cross-sectional space of the upper decorative strip 1 by size. The side tongues include a first side tongue 8 and a second side tongue 9. The first side tongue 8 has a clamping sharp corner 11, and the second side tongue 9 has an arc clamping surface 12. The clamping sharp corner 11 and the arc clamping surface 12 can be used here to ensure the reliability of the fixing of the two sides of the buckle, as shown in FIG. Figure 3As shown, the plug-in structure 4 includes a middle tongue 13 and fixed tongues on both sides, the fixed tongues are divided into a first side fixed tongue 14 and a second side fixed tongue 15, the middle tongue 13 has a hook piece 16, the hook piece 16 includes an integrally connected guide portion 17 and a hook portion 18, the hook portion 18 has a folded angle 19, the folded angle 19 of the hook portion 18 can be used to prevent the sheet metal from slipping out after the plug-in connection, the guide portion 17 has a guide slope, the plug-in space 20 between the guide portion 17 and the fixed tongue is used for plug-in connection with the sheet metal, the guide portion 17 controls the insertion force of the buckle to be small, the hook portion 18 controls the pull-out force of the buckle, the plug-in force of the product is adjusted by adjusting the guide angle and the guide distance, the insertion force of the sheet metal needs to be less than or equal to 40N, and the pull-out force of the sheet metal needs to be greater than or equal to 150N.

[0024] like Figure 4 As shown, the supporting structure 5 includes a middle supporting rib 21 and supporting ribs 22 on both sides. The middle supporting rib 21 and the supporting ribs 22 on both sides stably fix the upper decorative strip 1 on the sheet metal and prevent rotation and shaking. The clamping force is adjusted by matching the interference fit, so as to control the shaking of the upper decorative strip 1 and ensure the functionality of the upper decorative strip 1. In order to ensure the firm fixing force of the lower end of the buckle, an adjustment space 23 is provided between the middle tongue piece 13 and the first side fixing tongue piece 14, and a lower positioning head 24 is provided on the inner side surface of the adjustment space 23. After the above structure is set, the insertion force with the sheet metal is less than or equal to 40N, and the pull-out force with the sheet metal is greater than or equal to 150N.

[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A buckle for an upper decorative strip adapted to an aluminum sheet metal, fixing the cross section of the upper decorative strip, characterized in that: include: ontology; An installation and fixing structure is located on the inner side of the body, and the installation and fixing structure is used to be fixed in the section of the upper decorative strip; The plug-in structure is located in the middle of the outer side of the body, the outer side is opposite to the inner side, and the plug-in structure is used for plug-in connection with the sheet metal; The supporting structure is located on the outer side of the body and opposite to the inner side. The sheet metal supporting structure cooperates with the sheet metal and is used to prevent rotation and shaking. The installation and fixing structure includes side tongues located on the inner side of the body and a limiting tongue in the middle. The side tongues and the outer side of the body have an installation gap. The side tongues on both sides control the installation gap to ensure that the buckle is assembled into the card slot of the upper decorative strip by the force pressing of the side tongues. The middle limiting tongue matches the cross-sectional space of the upper decorative strip by size. The plug-in structure includes a middle tongue and fixed tongues on both sides. The middle tongue has a barb. The barb includes a guide part and a barb part that are integrally connected. The barb part has a folded angle, and the guide part has a guide inclined surface. The plug-in space between the guide part and the fixed tongue is used for plugging and unplugging with the sheet metal. The supporting structure includes a middle supporting rib and supporting ribs on both sides. The middle supporting rib and the supporting ribs on both sides stably fix the upper decorative strip on the sheet metal and prevent rotation and shaking. The clamping force is adjusted by matching the interference.

2. The upper decorative strip buckle adapted to aluminum sheet metal according to claim 1, characterized in that: The side tongue piece comprises a first side tongue piece and a second side tongue piece, the first side tongue piece is provided with a clamping sharp corner, and the second side tongue piece is provided with an arc clamping surface.

3. The upper decorative strip buckle adapted for aluminum sheet metal according to claim 1, characterized in that: An adjustment space is provided between the middle tongue piece and one of the fixed tongue pieces on one side, and a lower positioning head is provided on the inner side surface of the adjustment space.

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