Coated sound box for vehicle and production tool thereof

Abstract

The utility model relates to the technical field of automobile part production, in particular to an automobile cladding type sound box and a production tool thereof, the sound box comprises a framework (G) and a skin (P), the framework (G) is provided with function holes (G1), the skin (P) is provided with skin function holes (P1) with the same size and position corresponding to the framework function holes (G1) of the framework (G), and the skin (P) and the framework (G) are accurately aligned and fixed into a whole through glue joint. The device comprises a tool (M) provided with a tailored functional needle (M1). According to the coated sound box for the vehicle, the design is scientific, the structure is novel, the appearance is attractive, the through holes are accurately manufactured, the requirements of light transmission, sound transmission and ventilation are met, unique visual and tactile feelings are added to the interior of the vehicle, the production tool is simple in structure, a plurality of molds and devices are saved, the production efficiency is improved, the consumption is reduced, and the economic benefits are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive interior parts manufacturing technology, and in particular to automotive encased speaker boxes and their manufacturing tooling. Background Technology

[0002] In current automotive design, perforated areas in the interior are often manufactured using injection molding to create various through-holes. These holes satisfy the needs for light transmission, sound transmission, and ventilation, while also adding a unique visual and tactile experience to the vehicle interior. However, in practical applications, components with light, sound, and ventilation functions, such as car speakers, face numerous challenges. Especially in areas that are prominently displayed and easily visible, designers typically employ additional covering measures to prevent negative impacts on the passenger's visual experience. Common covering solutions include using fabric coverings, installing metal mesh covers, and incorporating internal mesh fabric. However, these methods often fail to completely resolve issues such as surface roughness, scratches, and poor visual appeal. Furthermore, these covering measures can sometimes affect the sound transmission of the through-holes, thus reducing the overall user experience. Therefore, designers and engineers are constantly seeking more advanced and aesthetically pleasing solutions that aim to enhance the aesthetics and user comfort of the interior while maintaining functionality. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned practical technical problems by providing a car-mounted enclosed speaker. Another purpose of this utility model is to provide a production tooling for the car-mounted enclosed speaker, thereby solving the problem.

[0004] The technical solution provided by this utility model is as follows:

[0005] A car-mounted enclosed speaker enclosure includes a sound-permeable area with through holes of 2.5mm-3mm in diameter. The vertical and horizontal spacing between adjacent through holes is 2mm-3mm. The speaker enclosure comprises a frame and a skin. The frame has functional holes forming the sound-permeable area. The skin has corresponding functional holes of the same size and position, forming the sound-permeable area. A second concave-convex positioning structure is provided on the outer periphery of the sound-permeable area of ​​the skin. Both the frame functional holes and the skin functional holes are through holes. The skin covers the frame and is glued and fixed integrally with it. The frame functional holes and the skin functional holes are precisely positioned and aligned to form the speaker's sound-permeable area.

[0006] A manufacturing fixture for automotive-grade encapsulated speakers includes functional pins whose diameter, spacing, and layout correspond perfectly to the diameter, spacing, and layout of the functional holes on the speaker's outer skin, and also correspond to a second concave-convex positioning structure for the speaker's outer skin, and a first concave-convex positioning structure.

[0007] The aforementioned enclosed car speaker has a sound-permeable area with a diamond-shaped pattern.

[0008] The aforementioned automotive-grade encased speaker has at least two concave-convex positioning structures on its outer skin.

[0009] The aforementioned manufacturing fixture for automotive-grade encapsulated speakers includes at least two concave-convex positioning structures corresponding to the second concave-convex positioning structure on the outer skin.

[0010] This utility model relates to a car-mounted encased speaker enclosure. Its novel design and construction result in a beautiful appearance. Precisely manufactured through-holes satisfy the requirements for light, sound, and air transmission, while also adding a unique visual and tactile experience to the car interior. It meets the automotive interior industry's demands for intelligent, environmentally friendly materials and personalized customization, while simultaneously addressing the dual requirements of multifunctionality (light, sound, and odor control) and aesthetics. The design is scientifically sound and simple in construction, simplifying the assembly process and saving on molds and equipment. Especially in large-scale production environments, it avoids the cumulative effect of assembly errors that could severely damage the overall quality and consistency of the speaker product, thereby improving production efficiency, reducing consumption, and increasing economic benefits. Attached Figure Description

[0011] The accompanying drawings, which are provided to further illustrate this application, form part of this application.

[0012] Figure 1 This is a 3D schematic diagram of a covered speaker and its manufacturing tooling.

[0013] Figure 2 for Figure 1 A schematic diagram of the AA-direction section.

[0014] Figure 3 for Figure 1 BB-directed sectional view.

[0015] Figure 4 This is a schematic diagram of an enclosed speaker.

[0016] In the diagram: P - skin; P1 - skin functional hole; P2 - concave-convex positioning structure two; G - skeleton; G1 - skeleton functional hole; M - tooling; M1 - functional pin; M2 - concave-convex positioning structure one; h - vertical spacing; l - horizontal spacing. Detailed Implementation

[0017] To make the purpose, technical solution, and advantages of the invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are only used to explain the present invention. Key words that need attention in these descriptions, including "functional hole," "positioning hole," "functional pin," "positioning pin," and "diamond pattern," are only for the purpose of facilitating the description of the present invention and simplifying the description, and therefore should not be construed as limiting the present invention.

[0018] The technical problems addressed by this invention, specifically the encapsulated speaker enclosure and its manufacturing process, primarily focus on two aspects: First, it aims to achieve precise positioning of the perforations in the outer skin, ensuring these holes are accurately positioned on the plastic frame. Precise positioning is crucial for maintaining key performance characteristics such as sound transmission and breathability; any misalignment of the holes will directly weaken these properties and affect aesthetics. Second, traditional covering methods require cumbersome positioning and fixing processes during assembly, significantly increasing manufacturing costs. Furthermore, assembly errors can lead to poor covering effects. Especially in large-scale production environments, the cumulative effect of assembly errors can severely damage the overall quality and consistency of the product. Therefore, this invention also focuses on simplifying the assembly process while ensuring the functionality of the through-holes, thereby improving production efficiency and product quality. Through innovative design and methods, this invention proposes a highly efficient and lower-cost solution that meets the automotive interior industry's demands for intelligent technology, environmentally friendly materials, and personalized customization, while simultaneously addressing the dual requirements of sound transmission, breathability, and aesthetics in the speaker enclosure.

[0019] like Figure 1 and Figure 4 As shown, the enclosed speaker has sound-permeable holes in its sound-permeable area. These holes are through holes with a diameter of 2.5mm-3mm. The vertical spacing h between adjacent through holes is 2mm-3mm, and the horizontal spacing l is 2mm-3mm. This utility model enclosed speaker includes a skin P and a frame G. The frame G has functional holes, and the skin P has corresponding functional holes of the same size and position as the frame G. The skin P and frame G are glued together. The functional holes in the skin P and the frame G are all through holes, precisely corresponding and positioned to form the speaker's sound-permeable holes. The overall arrangement is a uniformly distributed diamond pattern. In this embodiment, the diameter of the through holes is 2.8mm, and the vertical spacing h between adjacent through holes is 2.8mm, and the horizontal spacing l is 2.8mm.

[0020] I. Preparation steps for the production of this utility model:

[0021] a. Based on the speaker's shape design, a frame G is set, and its outline (shape) is manufactured using injection molding equipment. To create high-quality speaker sound holes, according to the design requirements for speaker sound holes (hole diameter of 2.5mm-3mm, vertical spacing h between adjacent through holes of 2mm-3mm, and horizontal spacing l of 2mm-3mm), frame functional holes G1 are set in the frame G. The frame G has a sound hole area, which is filled with the provided frame functional holes G1. The frame functional holes G1 are through holes. In this embodiment, the hole diameter of the frame functional holes G1 is 2.8mm, the vertical spacing h is 2.8mm, and the horizontal spacing l is 2.8mm. In this embodiment, the frame functional holes G1 are arranged in a diamond pattern. Then, the frame G semi-finished product is formed by injection molding.

[0022] b. For creating high-quality speaker enclosure sound holes, see Figures 2-3 As shown, the present invention manufactures a tooling M, which corresponds to the sound-permeable hole area of ​​the skeleton G and also has a sound-permeable hole area. The sound-permeable hole area of ​​the tooling M is provided with functional needles M1. The diameter, spacing, and layout (position) of the functional needles M1 completely correspond to the epidermal functional hole P1 of the epidermis P or the skeleton functional hole G1 of the skeleton G. In this embodiment, the diameter of the needle plate functional needles M1 is 2.8 mm, the vertical spacing between adjacent functional needles M1 is 2.8 mm, and the horizontal spacing is 2.8 mm. The functional needles M1 are arranged in a diamond pattern. Furthermore, a concave-convex positioning structure M2 is provided on the outer periphery of the sound-permeable hole area of ​​the tooling M. In this embodiment, the concave-convex positioning structure M2 is a positioning needle with a shaft hole structure, and at least two such structures are provided. The tooling M is machined to form a needle plate including the functional needles M1 in the sound-permeable hole area and the concave-convex positioning structure M2.

[0023] c. In order to perform hot pressing and bonding of the outer skin P and the frame G using existing leather covering hot pressing equipment, according to the shape and size of the speaker outer skin P and the shape and size of the tooling M, the lower mold and upper mold (die) of the leather covering hot pressing equipment are made respectively, which are used to fix the tooling M and the frame G respectively.

[0024] d. Prepare PVC leather for later use.

[0025] II. This utility model manufactures encased speaker boxes through a specific process, which can be subdivided into eight production steps:

[0026] First step, punching the outer skin (P):

[0027] In this step, the outer skin material P needs to be precisely cut. In this embodiment, PVC skin is selected and punched according to the predetermined outer dimensions of the speaker box to ensure that it meets the design requirements of the shape and size of the speaker box in subsequent steps.

[0028] The second step is to punch holes in the epidermis:

[0029] In this step, using CNC equipment or laser technology, precise perforations P1 are made in the cut skin layer P, corresponding to all the functional holes G1 of the skeleton G that fill the sound-transmitting hole area. (See [link to documentation]). Figure 3 and Figure 4 In this embodiment, the diameter of the functional holes is 2.8 mm, the vertical spacing h of the functional holes is 2.8 mm, and the horizontal spacing l is 2.8 mm. In addition to opening the functional holes P1 in the epidermis, this step also involves creating a second concave-convex positioning structure P2 corresponding to the concave-convex positioning structure M2 of the skeleton G. The second concave-convex positioning structure P2 is generally located on the outer periphery of the hole area. In this embodiment, the second concave-convex positioning structure P2 is a positioning hole, which is then used to form the semi-finished epidermis P.

[0030] The third step is to dry the surface P-coating:

[0031] Using a spraying device, apply water-based adhesive to the back of the P semi-finished skin. After spraying, dry the product at a temperature of 60℃±5℃ for 15-20 minutes.

[0032] Fourth step, spray adhesive onto skeleton G and dry it:

[0033] The semi-finished skeleton G is sprayed with water-based adhesive using a spraying device. After spraying, it is dried at a temperature of 60℃±5℃ for 15-20 minutes. In this embodiment, the drying temperature is 60℃ and the drying time is 16 minutes.

[0034] Fifth step, skeletal G and epidermal G localization:

[0035] To achieve precise hot-press bonding of the skeleton G and the outer skin P, the skeleton G and the outer skin G are first positioned on the upper and lower molds of the leather covering hot-press equipment. On one hand, the glue-dried skeleton G is fixedly placed into the upper mold fixture. On the other hand, the aforementioned specially designed tooling M with a needle plate is first fixed on the lower mold of the existing leather covering hot-press equipment. Then, the glue-dried semi-finished outer skin P is stably placed on the specially designed needle plate of tooling M, and positioned by the corresponding positioning structure M2 and the corresponding positioning structure P2. Figures 1-3 As shown, the functional hole P1 of the skin P is perfectly aligned with the functional pin M1 of the tooling pin plate. The pin plate is the most ingenious tooling design and manufacturing in this utility model. It can accurately fix the position of the skin P and ensure that all holes of the final speaker product are perfectly aligned.

[0036] Step 6: Pressing the skeleton G and the skin G together:

[0037] After the skeleton G of the upper mold and the skin P of the lower mold are placed and accurately positioned on the leather covering hot pressing equipment, this step involves closing the upper and lower molds to tightly bond the skeleton G and the skin P together, thus pressing the skeleton G and the skin P together on a large surface. The pressure of the upper and lower molds is 0.5 MPa-0.6 MPa, and the pressing time is 10-15 seconds. In this embodiment, the pressure is 0.5 MPa and the pressing time is 10 seconds. Through pressing, the functional holes P1 of the skin P in the sound-permeable area are precisely aligned with the functional holes G1 of the skeleton G, thus covering the area and forming a high-quality speaker sound-permeable hole.

[0038] Step 7, reverse wrapping of the epidermis:

[0039] After the sound-permeable area of ​​the speaker is covered, the remaining areas are covered by reverse wrapping. This manual reverse wrapping conceals the raised and recessed positioning structure P2 of the outer skin P, making it invisible from the speaker's exterior. During the reverse wrapping of the outer skin P, the adhesive is activated using a heat gun at a temperature of 220℃-240℃, with the nozzle 20cm-30cm from the covered area, and a baking time of 3-5 seconds. In this embodiment, the heat gun temperature is 230℃, the nozzle is 20cm from the covered area, and the baking time is 4 seconds.

[0040] Step 8, Product Activation Treatment:

[0041] The encased speaker is placed on the activated mold, and a sealed space is formed by a vacuum membrane. A vacuum is then created to form negative pressure, and the activation temperature is set to 80℃-90℃ for 60-80 seconds. This vacuum activation treatment ensures a firm bond between the frame G and the skin P, guaranteeing long-term quality stability and durability. In this embodiment, the activation temperature is 80℃ and the activation time is 60 seconds.

[0042] The above description is merely one embodiment of this utility model. For those skilled in the art, various modifications and variations of this utility model are possible, which will not be elaborated upon here. Any modifications, equivalent substitutions, or improvements made within the spirit and principle of this utility model are included within the scope of protection claimed by this utility model.

Claims

1. A car-mounted enclosed speaker, wherein the speaker has a sound-transmitting hole in its sound-transmitting area, the sound-transmitting hole being a through hole, the diameter of the through hole being 2.5mm-3mm, the vertical spacing (h) between adjacent through holes being 2mm-3mm, and the horizontal spacing (l) being 2mm-3mm, characterized in that, The speaker includes a frame (G) and a skin (P). The frame (G) has a frame functional hole (G1) forming a sound-transmitting area. The skin (P) has a skin functional hole (P1) of the same size and position as the frame functional hole (G1) of the frame (G), forming a sound-transmitting area of ​​the skin (P). On the outer periphery of the sound-transmitting area of ​​the skin (P), there is also a concave-convex positioning structure (P2). The frame functional hole (G1) of the frame (G) and the skin functional hole (P1) of the skin (P) are both through holes. The skin (P) covers the frame (G) and is glued and fixed to the frame (G) as a whole. The frame functional hole (G1) of the frame (G) and the skin functional hole (P1) of the skin (P) are precisely positioned and aligned to form the sound-transmitting hole of the speaker.

2. The vehicle-mounted enclosed speaker according to claim 1, characterized in that, The speaker has a sound-permeable hole in its sound-permeable area, and the overall shape is diamond-shaped.

3. The enclosed speaker for vehicles according to claim 1, characterized in that, The skin (P) has at least two concave-convex positioning structures (P2).

4. A manufacturing tooling for automotive encapsulated speaker enclosures, characterized in that, The tooling M includes a functional pin (M1), the diameter, spacing and layout of which correspond completely to the diameter, spacing and layout of the functional holes (P1) on the speaker skin (P), and correspond to the concave-convex positioning structure two (P2) on the speaker skin (P), and the concave-convex positioning structure one (M2) is provided.

5. The manufacturing tooling for a vehicle-mounted encased speaker according to claim 4, characterized in that, The tooling (M) has at least two concave-convex positioning structures (M2) corresponding to the skin (P) concave-convex positioning structures (P2).

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