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Integrated cast-embedded connecting pipe and shell and preparation process thereof

A preparation process and a technology for connecting pipes, which are applied in the field of portable mid-mounted motor casings, can solve the problems affecting the life safety of cyclists, the joints are easily broken and deformed, and achieve the design and control of die-casting process parameters, The effect of increasing the bearing area and low cost

Pending Publication Date: 2022-04-29
无锡市豪达工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the object of the present invention is to provide an integrated cast-embedded connecting pipe and shell to solve the problems of low strength, low hardness, easy deformation, and easy breakage during the combined use of the portable central motor connecting pipe and the shell with the vehicle body. Disadvantages: In the case of long-term and high-load operation, the connection between the motor and the body is easy to break, which will affect the durability of the motor and the life safety of the rider

Method used

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  • Integrated cast-embedded connecting pipe and shell and preparation process thereof
  • Integrated cast-embedded connecting pipe and shell and preparation process thereof

Examples

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Effect test

Embodiment 1

[0035] A one-piece cast-embedded connecting pipe and housing, such as figure 1 As shown, it includes an integrally formed casting insert 1, the casting insert 1 is a connecting pipe 11 and an anti-rotation structural member 12 located at the end of the connecting pipe 11, wherein the outer wall of the connecting pipe 11 is wrapped with a first outer shell 21, and The exterior of the transition member 12 is wrapped with a second outer casing 22 , the second outer casing 22 and the first outer casing 21 are integrally formed by die-casting and seamlessly bonded to the casting insert 1 . Therefore, this solution realizes the seamless combination of two different material components, and ensures the overall The components will not be bent and deformed under long-term and high-load operating conditions, which ensures the life of the motor and the stability of its operation. In this embodiment of the present invention, the casting insert 1 is an iron stamping part, and the first ou...

Embodiment 2

[0040] A preparation process for an integrated cast-embedded connecting pipe and shell, such as figure 1 and figure 2 shown, including the following steps:

[0041] S1. Casting insert 1 is obtained by perforating, annealing, cold / hot rolling, sawing, turning, stamping, and other processes of steel or iron with high hardness and high strength;

[0042] S2. When designing the casting mold, the position of the casting insert 1 is reserved inside the mold, and the positioning point or positioning groove of the casting insert 1 is set inside the mold to prevent the casting insert 1 from moving inside the mold;

[0043] S3. The casting insert 1 is fixed in the second mold through the preset positioning point or positioning groove after cooling, demolding and pickling, and after the mold is closed, the aluminum water with low cost and light weight is poured quantitatively into the barrel of the die-casting machine Then fill it between the second mold and the casting insert 1 throu...

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Abstract

The invention relates to the technical field of portable centrally-mounted motor shells, in particular to an integrated cast-embedded connecting pipe and shell and a preparation process thereof, and aims to overcome the defects that in the prior art, in the combined use process of a portable centrally-mounted motor connecting pipe and shell and a vehicle body, the strength is low, the hardness is low, and the portable centrally-mounted motor connecting pipe and shell is prone to deformation and breakage. The motor and vehicle body connecting structure comprises a casting insert, the casting insert comprises a connecting pipe and a rotation stopping structural part located at the end of the connecting pipe, a first outer shell is arranged on the outer wall of the connecting pipe, a second outer shell is arranged outside the rotation stopping structural part, and the second outer shell and the first outer shell are integrally formed through die casting and are in seamless fit with the casting insert. According to the scheme, the cast insert which is high in hardness and resistant to abrasion and the first outer shell and the second outer shell which are low in cost and easy to machine are selected, seamless combination of the two different material assemblies is achieved, and it is guaranteed that the whole part cannot be bent and deformed under the long-time and high-load operation condition.

Description

technical field [0001] The invention relates to the technical field of portable mid-mounted motor casings, in particular to an integrated cast-embedded connecting pipe and casing and a preparation process thereof. Background technique [0002] The motor is mainly composed of magnetic core, coil winding, casing and other components, and the second casing of the motor is an important part of the motor casing, and its quality directly affects the normal operation of the entire motor. For example, in the field of electric bicycles, in the human-powered riding mode, the rider steps on the pedal, drives the central shaft to rotate through the crank, and the central shaft drives the shell of the hub motor to rotate through the chain, and the motor shell drives the rear wheel of the bicycle to rotate to make the vehicle move forward. The connection between the process motor and the body is affected by external forces for a long time, which is easy to be damaged and broken, and has t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M7/02B22D17/00B22D19/00
CPCB62M7/02B22D17/00B22D19/00
Inventor 陈柯
Owner 无锡市豪达工艺品有限公司
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