Decorative strip, household appliance and mold

Abstract

The present invention provides a decorative strip, a household appliance, and a mold. The decorative strip includes a decorative strip body, which is a spray-free injection molded part. The decorative strip has a gate forming area corresponding to the mold gate. The decorative strip also includes a positioning portion and / or a hem. The positioning portion is provided on the decorative strip body and is used to position the decorative strip with the positioning structure of the household appliance. The hem is connected to the decorative strip body and is arranged at a preset angle between the hem and the decorative strip body, the preset angle being greater than 0 degrees and less than 180 degrees. The gate forming area is located on the positioning portion or the hem. The decorative strip of the present invention solves the problem of spray-free injection molded parts in the prior art being prone to appearance defects.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a decorative strip, a household appliance and a mold. Background Art

[0002] Currently, home appliances typically use spraying to surface-treat injection molded parts, enhancing various colors and textures while also masking some cosmetic flaws. However, this approach presents challenges such as high cost and environmental impact. Therefore, spray-free technology can be used to replace and address these issues. Injection molded parts made with spray-free materials exhibit unique light and shadow effects and a metallic sheen after molding, achieving an appearance comparable to or superior to spray-coated parts without requiring secondary processing. This technology offers advantages such as excellent functionality, low cost, and environmental friendliness.

[0003] However, spray-free materials are very prone to appearance defects such as flow marks, weld marks, and gate marks during the injection molding process, and the location or extent of occurrence is difficult to predict and the consistency is poor. Summary of the Invention

[0004] The main purpose of the present invention is to provide a decorative strip, a household appliance and a mold to solve the problem in the prior art that spray-free injection molded parts are prone to appearance defects.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a decorative strip is provided, including a decorative strip body, the decorative strip is a spray-free injection molded part, and the decorative strip has a gate molding area for corresponding to the gate of the mold; the decorative strip also includes a positioning portion and / or a folding edge, the positioning portion is arranged on the decorative strip body, and the positioning portion is used to position with the positioning structure of the household appliance; the folding edge is connected to the decorative strip body, and a preset angle is set between the folding edge and the decorative strip body, and the preset angle is greater than 0 degrees and less than 180 degrees; wherein the gate molding area is located on the positioning portion or the folding edge.

[0006] Furthermore, the decorative strip body has a first strip segment, a second strip segment and a third strip segment connected in sequence along its extension direction, and the lengths of the first strip segment, the second strip segment and the third strip segment along the extension direction of the decorative strip body are equal; wherein, the positioning portion is arranged on the second strip segment.

[0007] Furthermore, the fold extends along the extension direction of the decorative strip body, and the fold includes a second fold section, which is connected to the second strip section; along the extension direction of the fold, the first end and the second end of the second fold section extend to the two ends of the second strip section respectively; wherein, when the gate molding area is set on the fold, the gate molding area is located on the second fold section.

[0008] Furthermore, when the decorative strip includes a positioning portion and a folded edge, the positioning portion is connected to the decorative strip body through the folded edge; wherein, the positioning portion is provided on the second folded edge section.

[0009] Furthermore, the positioning portion is a raised portion or a recessed portion.

[0010] Furthermore, along the extension direction of the folded edge, the first end and the second end of the folded edge extend to the two ends of the decorative strip body respectively; one end of the first end surface of the folded edge is connected to one end of the appearance surface of the decorative strip.

[0011] Furthermore, the folding edge extends along the extension direction of the decorative strip body, and along the extension direction of the folding edge, the first end and the second end of the folding edge extend to the two ends of the decorative strip body respectively; the folding edge includes a first folding edge section, a second folding edge section and a third folding edge section connected in sequence along its extension direction, and the lengths of the first folding edge section, the second folding edge section and the third folding edge section along the extension direction of the folding edge are equal; a fixing portion is provided on the first folding edge section and / or the third folding edge section.

[0012] Furthermore, the fixing portion is at least one of a buckle, a through hole and a protruding structure.

[0013] Furthermore, the fixing portion is a buckle, and the angle between the length direction of the buckle and the extension direction of the decorative strip body is greater than or equal to 15 degrees.

[0014] Furthermore, the length of the decorative strip along any extension direction thereof is less than or equal to 400 mm.

[0015] According to another aspect of the present invention, a household appliance is provided, comprising a decorative strip, wherein the decorative strip is the decorative strip described above.

[0016] According to another aspect of the present invention, a mold is provided, wherein the mold has a cavity for forming the above-mentioned decorative strip, and the mold further has a gate, which is connected to the cavity.

[0017] The decorative strip of the present invention is made by using spray-free technology. The decorative strip is an injection-molded product and is made of spray-free material. The spray-free injection-molded part has a unique light and shadow effect and metallic luster after molding. It can achieve an appearance effect comparable to or better than spraying without secondary processing. This technology has the advantages of excellent function, low cost, and environmental protection. When the decorative strip only includes a positioning part, the gate molding area is located on the positioning part; when the decorative strip only includes a folding edge, the gate molding area is located on the folding edge; when the decorative strip includes a folding edge and a positioning part, the gate molding area is located on the positioning part or the folding edge. It can be seen that the folding edge and the positioning part are connected to the decorative strip body, and the gate is connected to the transition part. After passing through the gate, the injection melt first flows through the positioning part and the folding edge, and then flows through the decorative strip body, reducing the risk of flow marks on the appearance surface of the decorative strip body, and solving the problem that spray-free injection-molded parts are prone to appearance defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 shows an axonometric view of an embodiment of a decorative strip according to the present invention;

[0020] Figure 2 shows a top view of an embodiment of a decorative strip according to the present invention;

[0021] Figure 3 Shown Figure 2 A cross-sectional view of the decorative strip at section AA;

[0022] Figure 4 shows a side view of an embodiment of a decorative strip according to the present invention;

[0023] Figure 5 A schematic structural diagram of a decorative strip, a gate, a buffer runner and a melt inlet according to the present invention is shown; and

[0024] Figure 6 Shown according to Figure 5 Cross-sectional view of the decorative strip, gate, buffer runner, and melt inlet in FIG.

[0025] The above drawings include the following reference numerals:

[0026] 10. Decorative strip body; 11. First strip segment; 12. Second strip segment; 13. Third strip segment; 14. Appearance surface; 15. Non-appearance surface; 20. Gate; 30. Gate molding area; 40. Positioning portion; 50. Folding edge; 51. First folding edge segment; 52. Second folding edge segment; 53. Third folding edge segment; 54. First end face; 60. Fixing portion; 70. Buffer runner; 80. Melt inlet. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] The present invention provides a decorative strip, please refer to Figures 1 to 6 , including a decorative strip body 10, which is a spray-free injection molded part. The decorative strip has a gate molding area 30 for corresponding to the gate 20 of the mold; the decorative strip also includes a positioning portion 40 and / or a folding edge 50, the positioning portion 40 is arranged on the decorative strip body 10, and the positioning portion 40 is used to position with the positioning structure of the household appliance; the folding edge 50 is connected to the decorative strip body 10, and a preset angle is set between the folding edge 50 and the decorative strip body 10, and the preset angle is greater than 0 degrees and less than 180 degrees; wherein, the gate molding area 30 is located on the positioning portion 40 or the folding edge 50.

[0031] The decorative strip of the present invention is manufactured using a spray-free technology. This decorative strip is an injection-molded product made of a spray-free material. After molding, the spray-free injection molded part exhibits unique light and shadow effects and a metallic luster, achieving an appearance comparable to or superior to that of a spray-painted product without requiring secondary processing. This technology offers advantages such as excellent functionality, low cost, and environmental friendliness. When the decorative strip includes only a positioning portion 40, the gate molding area 30 is located on the positioning portion 40. When the decorative strip includes only a hem 50, the gate molding area 30 is located on the hem 50. When the decorative strip includes both the hem 50 and the positioning portion 40, the gate molding area 30 is located on either the positioning portion 40 or the hem 50. It can be seen that the fold 50 and the positioning part 40 are connected to the decorative strip body 10, and the gate 20 is connected to the positioning part 40 or the fold 50. After passing through the gate, the injection melt first flows through the positioning part 40 and the fold 50, and then flows through the decorative strip body 10, reducing the risk of flow marks on the appearance surface 14 of the decorative strip body 10, and solving the problem that spray-free injection molded parts are prone to appearance defects.

[0032] It should be noted that when a mold is used to injection mold the decorative strip, the mold cavity is used to mold the decorative strip, the gate 20 (also called the pouring gate) is connected to the cavity, the material in the gate 20 will form a gate molding part, and the area where the decorative strip is connected to the gate molding part is the gate molding area 30.

[0033] Specifically, the decorative strip body 10 includes an exterior surface 14 and a non-exterior surface 15 , and the positioning portion 40 and the folded edge 50 are both disposed on the non-exterior surface 15 .

[0034] Specifically, the decorative strip body 10 has a rectangular cross-section perpendicular to its extension direction, i.e., the decorative strip body 10 is a rectangular strip. The decorative strip body 10 has four surfaces along its circumference, one of which is an exterior surface 14, and the other three surfaces are non-exterior surfaces 15. It should be noted that the decorative strip body 10 can also have a variety of shapes, such as a triangle, a trapezoid, or a pentagon, in its cross-section perpendicular to its extension direction.

[0035] Specifically, the surface of the folded edge and the surface of the positioning portion are both non-appearance surfaces of the decorative strip.

[0036] Optionally, the preset angle between the folded edge 50 and the decorative strip body 10 is 90 degrees.

[0037] It should be noted that when the appearance component is applied to a household appliance, the appearance surface 14 is an integral part of the appearance of the household appliance, that is, the appearance surface 14 is the surface exposed in the application environment and can be seen by the user; the non-appearance surface 15 is located inside the household appliance, that is, the non-appearance surface 15 is the surface hidden inside the household appliance and cannot be seen by the user.

[0038] Specifically, when the decorative strip is installed on the household appliance, the positioning portion 40 is used as an assembly reference to ensure that the assembly gap between the decorative strip and other parts of the household appliance is uniform.

[0039] In this embodiment, the decorative strip body 10 includes a first strip segment 11, a second strip segment 12, and a third strip segment 13, which are sequentially connected along its extension direction. The first strip segment 11, the second strip segment 12, and the third strip segment 13 are of equal length along the extension direction of the decorative strip body 10. The positioning portion 40 is provided on the second strip segment 12. Specifically, the positioning portion 40 is provided on the strip segment that is approximately one-third of the length of the decorative strip body 10. The positioning portion 40 provided on the second strip segment 12 achieves balanced flow and pressure during the injection molding process, reducing the appearance of flow marks on the exterior surface 14 and resolving the problem of cosmetic defects often occurring in spray-free injection molded parts. Furthermore, pressure balance helps control warping and deformation of exterior components.

[0040] In this embodiment, the hem 50 extends along the extension direction of the decorative strip body 10 and includes a second hem segment 52 connected to the second strip segment 12. Along the extension direction of the hem 50, the first and second ends of the second hem segment 52 extend to the ends of the second strip segment 12, respectively. When the gate molding area 30 is disposed on the hem 50, the gate molding area 30 is located on the second hem segment 52. This arrangement achieves balanced flow and pressure during injection molding, reduces flow marks on the exterior surface 14, and addresses the problem of cosmetic defects easily occurring in spray-free injection molded parts. Furthermore, pressure balance helps control warping and deformation of exterior components.

[0041] In this embodiment, when the decorative strip includes a positioning portion 40 and a folded edge 50, the positioning portion 40 is connected to the decorative strip body 10 via the folded edge 50; the positioning portion 40 is disposed on the second folded edge section 52. This arrangement can reduce the number of structures disposed on the decorative strip body 10, thereby reducing the risk of flow marks on the exterior surface caused by such structures.

[0042] Optionally, the positioning portion 40 is a convex portion or a concave portion.

[0043] In this embodiment, the first and second ends of the hem 50 extend to the ends of the decorative strip body 10 along its extension direction, respectively. One end of the first end surface 54 of the hem 50 is connected to one end of the exterior surface 14 of the decorative strip. Specifically, the hem 50 has a connecting end and a free end disposed opposite each other in a direction perpendicular to its extension direction. The connecting end is connected to one end of the decorative strip body 10, and the free end is connected to the end facing away from the decorative strip body 10.

[0044] In this embodiment, the hem 50 extends along the extension direction of the decorative strip body 10. Along the extension direction of the hem 50, the first and second ends of the hem 50 extend to the ends of the decorative strip body 10, respectively. The hem 50 includes a first hem segment 51, a second hem segment 52, and a third hem segment 53, which are sequentially connected along the extension direction. The first hem segment 51, the second hem segment 52, and the third hem segment 53 are of equal length along the extension direction of the hem 50. A fixing portion 60 is provided on the first hem segment 51 and / or the third hem segment 53. Specifically, the fixing portion 60 is provided on the hem segment at one-third of its length at both ends of the hem 50. This arrangement can reduce the risk of flow marks.

[0045] Optionally, the fixing portion 60 is at least one of a buckle, a through hole and a protrusion structure.

[0046] In other embodiments, the fixing portion 60 is provided on the first strip segment 11 and / or the third strip segment 13 , that is, the fixing portion 60 is provided on the strip segments of one-third of the length at both ends of the decorative strip body 10 .

[0047] In this embodiment, the fixing portion 60 is a buckle, and the angle between the length direction of the buckle and the extension direction of the decorative strip body 10 is greater than or equal to 15 degrees. Figure 1 The x direction in the buckle is Figure 1 This setting can reduce the risk of flow marks.

[0048] In this embodiment, the length of the decorative strip along any extension direction thereof is less than or equal to 400 mm. Such an arrangement can reduce the risk of flow marks.

[0049] Specifically, when the length of the decorative strip along any extension direction is less than or equal to 400 mm, the decorative strip has only one gate molding area 30. This arrangement can reduce the generation of weld lines and solve the problem that spray-free injection molded parts are prone to appearance defects.

[0050] Optionally, the decorative strip body 10 and the positioning portion 40 are symmetrically arranged relative to the reference plane. This arrangement can achieve balanced flow and pressure during injection molding, reducing flow marks on the exterior surface 14 and resolving the problem of cosmetic defects often occurring with spray-free injection molded parts. Furthermore, pressure balance helps control warping and deformation of exterior components.

[0051] In this embodiment, the exterior surface 14 is provided with a brushed pattern, extending parallel to the flow direction of the injection molding melt. If flow marks appear on the exterior surface, they will be oriented in the same direction as the flow direction. The parallel extension of the brushed pattern obscures the flow marks, effectively concealing them.

[0052] It should be noted that brushed texture is formed on the surface of the appearance parts through surface brushing treatment, and surface brushing treatment is a surface treatment method that has a decorative effect.

[0053] In this embodiment, the decorative strip is made of a spray-free material, which includes a base material and particles distributed in the base material; wherein the base material is a thermoplastic polymer material; and the particles are at least one of metal particles, pearlescent powder, and fibers.

[0054] Optionally, the metal particles are aluminum or copper.

[0055] Optionally, the fibers are nylon or natural fibers.

[0056] The present invention further provides a household appliance, comprising a decorative strip, wherein the decorative strip is the decorative strip in the above embodiment.

[0057] The present invention also provides a mold, such as Figure 5 and Figure 6 As shown, the mold has a cavity for forming the decorative strip in the above embodiment, and the mold also has a gate 20, which is connected to the cavity.

[0058] In this embodiment, the mold further includes a buffer runner 70 and a melt inlet 80. The first end of the buffer runner 70 is connected to the melt inlet 80, and the buffer runner 70 is connected to the end of the gate 20 away from the mold cavity. This allows the injection melt to flow through the melt inlet 80, the buffer runner 70, and the gate 20 in sequence before entering the mold cavity. The provision of the buffer runner provides a buffering effect on the injection melt.

[0059] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0060] The decorative strip of the present invention is manufactured using a spray-free technology. This decorative strip is an injection-molded product made of a spray-free material. After molding, the spray-free injection molded part exhibits unique light and shadow effects and a metallic luster, achieving an appearance comparable to or superior to that of a spray-painted product without requiring secondary processing. This technology offers advantages such as excellent functionality, low cost, and environmental friendliness. When the decorative strip includes only a positioning portion 40, the gate molding area 30 is located on the positioning portion 40. When the decorative strip includes only a hem 50, the gate molding area 30 is located on the hem 50. When the decorative strip includes both the hem 50 and the positioning portion 40, the gate molding area 30 is located on either the positioning portion 40 or the hem 50. It can be seen that the fold 50 and the positioning part 40 are connected to the decorative strip body 10, and the gate 20 is connected to the positioning part 40 or the fold 50. After passing through the gate, the injection melt first flows through the positioning part 40 and the fold 50, and then flows through the decorative strip body 10, reducing the risk of flow marks on the appearance surface 14 of the decorative strip body 10, and solving the problem that spray-free injection molded parts are prone to appearance defects.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A decorative strip, comprising a decorative strip body (10), characterized in that: The decorative strip is a spray-free injection molded part, and has a gate molding area (30) for corresponding to the gate (20) of the mold; the decorative strip also includes a positioning portion (40) and / or a folding edge (50). The positioning portion (40) is provided on the decorative strip body (10), and the positioning portion (40) is used for positioning with a positioning structure of a household appliance; The folded edge (50) is connected to the decorative strip body (10), and a preset angle is formed between the folded edge (50) and the decorative strip body (10), wherein the preset angle is greater than 0 degrees and less than 180 degrees; Wherein, the gate molding area (30) is located on the positioning portion (40) or the folding edge (50); The decorative strip body (10) has a first strip segment (11), a second strip segment (12), and a third strip segment (13) connected in sequence along its extension direction; The folding edge (50) extends along the extension direction of the decorative strip body (10), and the folding edge (50) includes a second folding edge section (52), and the second folding edge section (52) is connected to the second strip section (12); along the extension direction of the folding edge (50), the first end and the second end of the second folding edge section (52) respectively extend to the two ends of the second strip section (12); wherein, when the gate molding area (30) is provided on the folding edge (50), the gate molding area (30) is located on the second folding edge section (52); Along the extension direction of the folding edge (50), the first end and the second end of the folding edge (50) respectively extend to the two ends of the decorative strip body (10); one end of the first end surface (54) of the folding edge (50) is connected to one end of the appearance surface (14) of the decorative strip; The folding edge (50) extends along the extension direction of the decorative strip body (10), and along the extension direction of the folding edge (50), the first end and the second end of the folding edge (50) respectively extend to the two ends of the decorative strip body (10); the folding edge (50) includes a first folding edge section (51), a second folding edge section (52) and a third folding edge section (53) connected in sequence along its extension direction, and the lengths of the first folding edge section (51), the second folding edge section (52) and the third folding edge section (53) along the extension direction of the folding edge (50) are equal; A fixing portion (60) is provided on the first folding edge section (51) and / or the third folding edge section (53).

2. The decorative strip according to claim 1, characterized in that The first strip segment (11), the second strip segment (12), and the third strip segment (13) have equal lengths along the extension direction of the decorative strip body (10); wherein the positioning portion (40) is provided on the second strip segment (12).

3. The decorative strip according to claim 1, characterized in that When the decorative strip includes the positioning portion (40) and the folding edge (50), the positioning portion (40) is connected to the decorative strip body (10) via the folding edge (50); wherein the positioning portion (40) is provided on the second folding edge section (52).

4. The decorative strip according to claim 1, characterized in that The positioning portion (40) is a convex portion or a concave portion.

5. The decorative strip according to claim 1, characterized in that The fixing portion (60) is at least one of a buckle, a through hole and a protruding structure.

6. The decorative strip according to claim 1, characterized in that The fixing portion (60) is a buckle, and the angle between the length direction of the buckle and the extension direction of the decorative strip body (10) is greater than or equal to 15 degrees.

7. The decorative strip according to any one of claims 1 to 6, characterized in that: The length of the decorative strip along any extension direction thereof is less than or equal to 400 mm.

8. A household appliance comprising a decorative strip, characterized in that: The decorative strip is the decorative strip according to any one of claims 1 to 7.

9. A mold, characterized in that: The mold has a cavity for forming the decorative strip according to any one of claims 1 to 7, and the mold further has a gate (20), wherein the gate (20) is connected to the cavity.

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