Decorative rib alignment positioning structure at corner coated by automotive trim skin
By setting functional slots and bottom positioning slots on the skeleton, combined with the design of functional sewing thread and decorative thread, the positioning problem of decorative thread at the corner of the car interior is solved, improving the stability and appearance quality of the decorative thread, while reducing production costs.
Patent Information
- Application Number
- CN202423294198.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The lack of positioning measures for the decorative lines at the corners of automotive interior parts makes them prone to crookedness during wrapping, affecting the decorative effect and quality.
Functional grooves and bottom thread positioning grooves are made on the skeleton, and functional sewing threads and decorative threads are set on the surface. The functional sewing threads are inserted into the functional grooves, and the bottom thread of the decorative threads is inserted into the bottom thread positioning grooves to ensure the stability of the decorative threads.
It improves the appearance quality of stitching at corners of automotive interior trim, ensures the neatness and stability of decorative lines, and reduces production costs.
Smart Images

Figure CN223494443U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive interior manufacturing technology, and in particular to a positioning structure for decorative lines at the corners of automotive interior trim coverings. Background Technology
[0002] In the normal design of interior parts such as car dashboards, conventional French double stitching only positions the stitching by folding the skin into the groove at the middle functional line, relying on the thickness of the double skin and the skeleton groove for positioning. However, decorative lines have no positioning measures, and they are very prone to skeletalization when stretched during wrapping, especially at the corners of the wrapping parts where decorative lines are most susceptible to stretching, which affects the wrapping quality and decorative effect. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a positioning structure for the decorative lines at the corners of automotive interior trim coverings.
[0004] The technical solution adopted in this utility model is as follows:
[0005] A corner trim positioning structure for automotive interior leather covering includes a frame, a leather panel, functional sewing threads, and decorative threads. The frame has functional grooves and bottom thread positioning grooves on both sides of the functional grooves. The leather panel has sewing threads and decorative threads on both sides of the functional sewing threads. The functional sewing threads connect two leather panels, and the decorative threads form a top thread and a bottom thread. The leather panel is tightly attached to the frame, with its functional sewing thread portion engaged in the functional groove of the frame, and the bottom thread of the decorative thread engaged and positioned in the bottom thread positioning groove of the frame.
[0006] The functional slot is parallel to the bottom positioning slot.
[0007] Adding positioning grooves to the bottom edge of the decorative line ensures the appearance quality of the stitching after covering.
[0008] This utility model relates to a decorative line alignment and positioning structure for corners of automotive interior trim coverings. It is scientifically designed, structurally sound, safe and reliable, and achieves ideal practical results, while maintaining low production costs. Attached Figure Description
[0009] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.
[0010] Figure 1 A schematic diagram showing the skin covering at the corner of a car dashboard;
[0011] Figure 2 for Figure 1A schematic diagram of the positioning structure for the decorative line at the corner of the automotive interior leather covering in Part M of this utility model.
[0012] Figure 3 A schematic diagram showing the installation and positioning of the dashboard covering at the corner of a car.
[0013] In the diagram: 1-outer skin; 2-functional sewing thread; 3-top thread; 4-bottom thread; 5-functional groove; 6-bottom thread positioning groove; P-skeleton. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model. Key terms that need attention in these descriptions, including "functional slot" and "bottom line positioning slot," are only for the purpose of facilitating and simplifying the description of this utility model, and therefore should not be construed as limiting this utility model.
[0015] like Figure 1-2 As shown, this utility model discloses a positioning structure for the decorative line alignment at the corner of the automotive interior trim covering. In this embodiment, it is used for positioning the decorative line at the corner of the dashboard trim covering. It includes a frame P, a trim 1, functional sewing thread 2, and decorative thread. The frame P has a functional groove 5, and bottom thread positioning grooves 6 are formed on both sides of the functional groove 5. The functional groove 5 and the bottom thread positioning grooves 6 are parallel. The width of the bottom thread positioning groove 6 is 0.5-0.7mm, and in this embodiment, it is 0.6mm. The trim 1 is sewn with sewing thread 2, and decorative thread is sewn on both sides of the functional sewing thread 2. The functional sewing thread 2 connects two pieces of trim. The decorative thread forms a top thread 3 and a bottom thread 4. The bottom thread 4 has a diameter of 0.3-0.5mm, and in this embodiment, the bottom thread 4 has a diameter of 0.4mm. (See reference...) Figure 3 As shown, in the area covered by the outer skin 1 at the corner of the car dashboard, as indicated by the arrow in the figure, the outer skin 1 is pressed down, and the outer skin 1 is tightly attached to the frame P. The functional sewing thread 2 is fitted into the functional groove 5 of the frame P, and the bottom line 4 of the decorative thread is adjusted to be inserted into and positioned in the bottom line positioning groove 6 of the frame P. The surface line 3 of the decorative thread on the outer skin 1 serves a decorative function. Due to the positioning effect of the bottom line positioning groove 6 on the bottom line 4, the surface line 3 of the decorative thread also forms a neat decorative effect on the surface of the outer skin 1.
[0016] The above description is only a general embodiment of this utility model. For those skilled in the art, there are various other embodiments with modifications and variations, which will not be elaborated here. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model are included within the protection scope claimed by this utility model.
Claims
1. A positioning structure for decorative lines at the corners of automotive interior trim, comprising a skeleton (P), a trim (1), functional sewing thread (2), and decorative lines, characterized in that, The skeleton (P) has a functional groove (5) and bottom line positioning grooves (6) on both sides of the functional groove (5). The skin (1) is provided with sewing thread (2) and decorative thread on both sides of the functional sewing thread (2). The functional sewing thread (2) connects the two skin pieces. The decorative thread forms the top line (3) and the bottom line (4). The skin (1) is close to the skeleton (P). The part of its functional sewing thread (2) is inserted into the functional groove (5) of the skeleton (P), and the bottom line (4) of the decorative thread is inserted into and positioned in the bottom line positioning groove (6) of the skeleton (P).
2. The decorative line alignment and positioning structure at the corner of an automotive interior trim covering according to claim 1, characterized in that, The functional slot (5) is parallel to the bottom positioning slot (6).