Rotational molding box handle fixing embedded part

Abstract

The utility model discloses a rotational molding box handle fixing insert which comprises a base plate and cylindrical pins with internal threads, pin through holes matched with handle hardware hole positions are formed in the base plate, each pin through hole is provided with one matched cylindrical pin, the base plate is arranged on the inner wall of a rotational molding box body, and the cylindrical pins penetrate through the pin through holes to be embedded into the box wall of the rotational molding box body. One end of the cylindrical pin is provided with a cap which abuts against the base plate, and the end face of the other end of the cylindrical pin is flush with the outer wall of the rotational molding box body. Compared with the prior art, the assembling efficiency of the rotational molding box handle can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to a roto-molding box, in particular to an embedded part for fixing a handle on the roto-molding box. Background Art

[0002] Roto-molded boxes are boxes produced using the roto-molding process. High-density polyethylene is usually used as the main material. Its structure is usually a top-opening design, consisting of a box body, a box cover and accessories (such as locks, hinges, handles, exhaust valves, sealing strips, etc.). It has many advantages such as drop resistance, wear resistance, shock absorption, and waterproofness. It is suitable for the transportation and storage of medical instruments, photographic equipment, small instruments, maintenance tools, emergency materials, large equipment, supplies, etc.

[0003] The current solution for assembling roto-molded box handles is to process a through hole on the front of the roto-molded box body, place the handle hardware on the outer wall of the box body, and use a bolt to pass through the hole of the handle hardware and the through hole on the front of the box body. One end of the bolt extends into the box body, and a gasket and a nut are put on the inserted bolt. The nut is tightened to fix the handle hardware on the box body. This solution for assembling handles has low assembly efficiency because it requires an additional drilling process and the subsequent fixing is time-consuming. Utility Model Content

[0004] The utility model aims to overcome the problem of low assembly efficiency of existing roto-molded box handles and to provide a fixed inner insert which can effectively improve the assembly efficiency of roto-molded box handles.

[0005] The utility model adopts a technical solution to solve its technical problems: a roto-molded box handle fixing embedded part, including a pad and a cylindrical pin with an internal thread, the pad is provided with a pin through hole matching the hole position of the handle hardware, each pin through hole is provided with a matching cylindrical pin, the pad is placed on the inner wall of the roto-molded box, the cylindrical pin passes through the pin through hole and is embedded in the wall of the roto-molded box, one end of the cylindrical pin is provided with a cap, the cap rests on the pad, and the end face of the other end of the cylindrical pin is flush with the outer wall of the roto-molded box.

[0006] Optionally, the outer wall of the cylindrical pin is provided with knurling.

[0007] Optionally, an anti-rotation cut surface is provided on the outer wall of the cylindrical pin.

[0008] Optionally, the pad is provided with a plurality of glue holes.

[0009] The usage and principle of the utility model: before the roto-molding of the roto-molded box body, the fixed insert is placed in the mold, and the fixed insert is tightly connected to the roto-molded box body by roto-molding. When assembling the box handle, it is only necessary to use bolts to thread the handle hardware with the cylindrical pin of the fixed insert, and then tighten it to complete the fixation of the handle hardware to the roto-molded box body. Due to the use of the fixed insert, it is no longer necessary to punch holes, and the box body drilling process is omitted; in addition, nuts and washers are not required, and the subsequent fixing operation is faster.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can effectively improve the assembly efficiency of the rotationally molded box handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the cylindrical pin structure of the utility model;

[0013] The sub-markings described in the accompanying drawings are as follows: pad 1, cylindrical pin 2, pin through hole 3, cap 4, knurling 5, anti-rotation cut surface 6, glue hole 7. DETAILED DESCRIPTION

[0014] Embodiment 1, below combines Figure 1 and Figure 2 To further illustrate the utility model, a roto-molded box handle fixing insert comprises a pad 1 and a cylindrical pin 2 with an internal thread, the pad is provided with a pin through hole 3 matching the hole position of the handle hardware, each pin through hole is provided with a matching cylindrical pin, the pad is placed on the inner wall of the roto-molded box, the cylindrical pin passes through the pin through hole and is vertically embedded in the wall of the roto-molded box, one end of the cylindrical pin is provided with a cap 4, the cap and the cylindrical pin are integrally formed, the cap rests on the pad, and the end face of the other end of the cylindrical pin is flush with the outer wall of the roto-molded box.

[0015] Optionally, in order to make the cylindrical pin better embedded in the box wall and prevent it from falling off, knurling 5 is processed on the outer wall of the cylindrical pin.

[0016] Optionally, in order to prevent the cylindrical pin from rotating when the cylindrical pin is threadedly connected to the bolt, an anti-rotation cut surface 6 is provided on the outer wall of the cylindrical pin.

[0017] Optionally, in order to better fix the pad on the box wall, a plurality of glue holes 7 are provided on the pad, and the cross section of the glue hole can be an isosceles trapezoid or a square with an inclination, so that the pad can be firmly fixed on the box wall during the rotational molding of the box body.

[0018] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A rotomolded box handle fixing insert, comprising a backing plate (1) and a cylindrical pin (2) with an internal thread, characterized in that: The pad is provided with pin holes (3) matching the holes of the handle hardware, each pin hole is provided with a matching cylindrical pin, the pad is placed on the inner wall of the rotomolding box, the cylindrical pin passes through the pin holes and is embedded in the wall of the rotomolding box, one end of the cylindrical pin is provided with a cap (4), the cap rests on the pad, and the end face of the other end of the cylindrical pin is flush with the outer wall of the rotomolding box.

2. The rotationally molded box handle fixing insert according to claim 1, characterized in that: The outer wall of the cylindrical pin is provided with knurling (5).

3. The rotationally molded box handle fixing insert according to claim 1, characterized in that: An anti-rotation cut surface (6) is provided on the outer wall of the cylindrical pin.

4. The rotationally molded box handle fixing insert according to claim 1, characterized in that: The backing plate is provided with a plurality of glue pulling holes (7).

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