A circular-arc hollow injection-molded part

Abstract

The utility model provides a kind of arc hollow injection molding part, including hollow injection molding part main body, integrated guide rail seat and arch truss, hollow injection molding part main body is opened with arc cavity, arch cavity is integrally injection molded with arch truss, arch truss left and right ends are integrally provided with connecting bent plate, this design solves the single function of the known arc hollow injection molding part inside, and single-layer hollow structure is directly formed by traditional injection molding process, there is no reinforcing rib or support structure inside, leading to insufficient rigidity, prone to deformation or cracking problem, the utility model is through built-in arch truss structure, imitates bridge mechanics principle, with least material greatly improves the bending and torsional stiffness of part along radian direction, effectively prevent deformation and vibration, realize the unity of light weight and high stiffness, again cooperate integrated type clamping groove guide rail to allow wiring harness, sensor or other functional module can be directly slidably installed without additional tool, assembly efficiency is very high.

Description

Technical Field

[0001] This utility model is an arc-shaped hollow injection molded part, belonging to the field of injection molding technology. Background Technology

[0002] Arc-shaped hollow injection molded parts are widely used in modern industry, such as the curved frames of home appliance casings, the curved air ducts of automotive interiors, and the curved support components of furniture. These parts are integrally molded using injection molding, combining the advantages of aesthetics, lightweight, and structural strength. Commonly known arc-shaped hollow injection molded parts are typically hollow shells made of a single material with a constant wall thickness. Their interior is purely hollow.

[0003] However, these existing known structures have the following obvious drawbacks: for example, single-layer hollow structures are directly molded by traditional injection molding processes, without internal reinforcing ribs or supporting structures, resulting in insufficient rigidity and easy deformation or cracking; and their internal cavities have a single function, only serving to reduce weight, and failing to fully utilize the internal space to integrate other functions, such as cable management or installation of additional components. There is an urgent need for an arc-shaped hollow injection molded part to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an arc-shaped hollow injection molded part to solve the problems mentioned in the background. This invention, through its built-in arched truss structure, mimics the principles of bridge mechanics, greatly improving the bending and torsional stiffness of the part along the arc direction with minimal material, effectively preventing deformation and vibration, and achieving a balance between lightweight and high rigidity. Furthermore, the integrated slot guide rail allows wiring harnesses, sensors, or other functional modules to be directly slidably installed without additional tools.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an arc-shaped hollow injection molded part, comprising a hollow injection molded part body, an integrated guide rail seat, and an arched truss. An arc-shaped cavity is formed inside the hollow injection molded part body. An arched truss is integrally injection molded within the arc-shaped cavity. Connecting bent plates are integrally provided at both the left and right ends of the arched truss. An integrated slot is formed at the front end of the arc-shaped cavity. A T-shaped clip is slidably inserted into the integrated slot. An integrated guide rail seat is integrally fixed at the rear end of the T-shaped clip. Plastic strips are adhered to the left and right sides of the rear end of the integrated guide rail seat. Wire harness slots are formed on the outer sides of the two plastic strips. Multiple elastic rubber clips are adhered to the openings of the two wire harness slots using epoxy resin adhesive. Arc-shaped abutments are adhered to the inner sides of the two plastic strips. Inner rubber plates are adhered to the inner sides of the two arc-shaped abutments. A modular cavity is formed between the two inner rubber plates and the rear end face of the integrated guide rail seat.

[0006] Furthermore, the two connecting plates are respectively fixedly attached to the left and right ends inside the arc-shaped cavity.

[0007] Furthermore, multiple arc-shaped plastic support plates are adhered to the arc-shaped groove at the front end of the arched truss.

[0008] Furthermore, the front end of the T-shaped card strip is adhered with multiple rubber damping strips.

[0009] Furthermore, all of the rubber damping strips are damped and fitted against the inner sidewall of the integrated card slot.

[0010] Furthermore, both of the aforementioned arc-shaped abutments abut against the front end of the inner part of the arched truss.

[0011] The beneficial effects of this utility model are as follows: This utility model provides an arc-shaped hollow injection molded part. Due to the addition of an arched truss, connecting bent plate, T-shaped clip, rubber damping strip, integrated guide rail seat, plastic strip, wire harness slot, elastic rubber clip, arc-shaped abutment plate, rubber inner plate, and arc-shaped plastic support plate, the structure is reasonable. Through the built-in arched truss structure, imitating the principles of bridge mechanics, the bending and torsional stiffness of the part along the arc direction is greatly improved with minimal material, effectively preventing deformation and vibration, and achieving a unity of lightweight and high rigidity. In addition, the integrated slot guide rail allows wire harnesses, sensors, or other functional modules to be directly slidably installed without additional tools, resulting in extremely high assembly efficiency, a neat layout, and strong practicality. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a structural schematic diagram of an arc-shaped hollow injection molded part according to the present invention;

[0014] Figure 2 This is a schematic diagram of the arc-shaped cavity structure of an arc-shaped hollow injection molded part according to the present invention;

[0015] Figure 3 This is a schematic diagram of an arched truss structure for a hollow injection-molded arc-shaped part according to the present invention;

[0016] Figure 4 This is a schematic diagram of an integrated guide rail base structure for an arc-shaped hollow injection molded part according to the present invention.

[0017] In the diagram: 1-Hollow injection molded body, 2-Arc-shaped cavity, 3-Arch-shaped truss, 4-Connecting bend plate, 5-Integrated slot, 6-T-shaped clip, 7-Rubber damping strip, 8-Integrated guide rail seat, 9-Plastic strip, 10-Wire harness slot, 11-Elastic rubber clip, 12-Arc-shaped support plate, 13-Rubber inner plate, 14-Module cavity, 15-Arc-shaped plastic support piece. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: an arc-shaped hollow injection molded part, including a hollow injection molded part body 1, an integrated guide rail seat 8, and an arched truss 3. An arc-shaped cavity 2 is formed inside the hollow injection molded part body 1. An arched truss 3 is integrally injection molded inside the arc-shaped cavity 2. Connecting bent plates 4 are integrally provided at both the left and right ends of the arched truss 3. An integrated slot 5 is formed at the front end of the arc-shaped cavity 2. A T-shaped clip 6 is slidably inserted into the integrated slot 5. An integrated guide rail seat 8 is integrally fixed at the rear end of the T-shaped clip 6. Plastic strips 9 are adhered to both the left and right sides of the rear end of the integrated guide rail seat 8. The two plastic strips 9 are positioned opposite each other. Both sides are provided with wire harness slots 10. Multiple elastic rubber strips 11 are glued to the openings of the two wire harness slots 10 with epoxy resin. Arc-shaped abutments 12 are glued to the inner sides of the two plastic strips 9. Rubber inner plates 13 are glued to the inner sides of the two arc-shaped abutments 12. The two rubber inner plates 13 and the rear end face of the integrated guide rail seat 8 form a module cavity 14. This design solves the problem that the existing known arc-shaped hollow injection molded parts have a single internal function and the single-layer hollow structure is directly formed by traditional injection molding process. There are no internal reinforcing ribs or supporting structures, resulting in insufficient rigidity and easy deformation or cracking.

[0020] As the first embodiment of this utility model: two connecting bent plates 4 are respectively fixedly attached to the left and right ends inside the arc-shaped cavity 2. By adding the two connecting bent plates 4, which are respectively fixedly attached to the left and right ends inside the arc-shaped cavity 2, they can work with the arched truss 3 to provide auxiliary reinforcement to the hollow injection molded part body 1. Multiple arc-shaped plastic support pieces 15 are adhered to the arc-shaped groove at the front end of the arched truss 3. By adding multiple arc-shaped plastic support pieces 15, the bending and deformation resistance of the arched truss 3 to the hollow injection molded part body 1 can be improved. Multiple rubber damping strips 7 are adhered to the front end of the T-shaped clip 6. The multiple rubber damping strips 7 are all damped and attached to the inner sidewall of the integrated card slot 5. By adding multiple rubber damping strips 7, when the T-shaped clip 6 is slidably inserted into the integrated card slot 5, it will not slip on its own. Both arc-shaped abutments 12 abut against the front end of the inner part of the arched truss 3. By adding two arc-shaped abutments 12 that abut against the front end of the inner part of the arched truss 3, the support stability of the arched truss 3 on the hollow injection molded body 1 can be further improved, and the openings of the two arc-shaped abutments 12 can be prevented from swinging on their own, thereby facilitating the anti-loosening installation of sensors or other functional modules in the module cavity 14.

[0021] As a second embodiment of this utility model: the arched truss 3 and the two connecting bent plates 4 are integrally injection molded with the hollow injection molded body 1 and located inside the arc-shaped cavity 2. It adopts an arched structure, and the two connecting bent plates 4 are fixed to the left and right ends inside the cavity 2. Its function is to serve as the main load-bearing structure, effectively transferring and distributing the load acting on the outer wall to the entire structure, greatly enhancing rigidity and preventing parts from collapsing or twisting under stress. The sensor or other functional modules are inserted into the module cavity 14 and limited by the two rubber inner plates 13. Then, the wire harness is passed through the wire harness slot 10 and secured by multiple elastic rubber clips 11 to prevent loosening. Then, the T-shaped clip 6 is slidably inserted into the integrated slot 5, so that the multiple rubber damping strips 7 are damped and attached to the inner side wall of the integrated slot 5, which can prevent the T-shaped clip 6 from sliding on its own when it is slidably inserted into the integrated slot 5.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hollow injection molded part in the shape of an arc, comprising a hollow injection molded part body (1), an integrated guide rail seat (8), and an arched truss (3), characterized in that: The hollow injection-molded body (1) has an arc-shaped cavity (2) inside. An arched truss (3) is integrally injection-molded inside the arc-shaped cavity (2). A connecting bending plate (4) is integrally provided at both the left and right ends of the arched truss (3). An integrated slot (5) is provided at the front end of the arc-shaped cavity (2). A T-shaped clip (6) is slidably inserted into the integrated slot (5). An integrated guide rail seat (8) is integrally fixed at the rear end of the T-shaped clip (6). The left and right sides of the rear end of the integrated guide rail seat (8) are glued together. The two plastic strips (9) are provided with wire harness slots (10) on their outer sides. Multiple elastic rubber strips (11) are glued to the openings of the two wire harness slots (10) with epoxy resin. The two plastic strips (9) are glued with arc-shaped abutments (12) on their inner sides. The two arc-shaped abutments (12) are glued with rubber inner plates (13) on their inner sides. The two rubber inner plates (13) form a module cavity (14) between the two inner rubber plates (13) and the rear end face of the integrated guide rail seat (8).

2. The arc-shaped hollow injection molded part according to claim 1, characterized in that: The two connecting plates (4) are fixedly attached to the left and right ends of the arc-shaped cavity (2) respectively.

3. The arc-shaped hollow injection molded part according to claim 1, characterized in that: The arched truss (3) has multiple arc-shaped plastic support plates (15) glued to the arc-shaped groove at the front end.

4. The arc-shaped hollow injection molded part according to claim 1, characterized in that: The front end of the T-shaped card strip (6) is glued with multiple rubber damping strips (7).

5. The arc-shaped hollow injection molded part according to claim 4, characterized in that: Multiple rubber damping strips (7) are damped and fitted against the inner sidewall of the integrated slot (5).

6. The arc-shaped hollow injection molded part according to claim 1, characterized in that: Both of the arc-shaped abutments (12) abut against the front end of the inner part of the arched truss (3).

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