Ultrasonic welding structure of plastic planetary gearbox

A planetary gearbox, ultrasonic welding technology, applied in the direction of transmission boxes, components with teeth, etc., can solve problems such as easy loosening, gear stuck, etc., to ensure stability, prevent the gearbox shell from loosening, improve reliability and The effect of stability

Inactive Publication Date: 2013-09-04
WUXI LONGSHENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an ultrasonic welding structure of a planetary gearbox to solve the shortcomings of the existing gearboxes that are easily loosened by welding, resulting in gears being stuck, and to further improve the reliability and stability of the gearbox.

Method used

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  • Ultrasonic welding structure of plastic planetary gearbox
  • Ultrasonic welding structure of plastic planetary gearbox
  • Ultrasonic welding structure of plastic planetary gearbox

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0017] A plastic planetary gearbox ultrasonic welding structure, such as figure 1 As shown, it includes a gear case upper case 1 and a gear case middle case 2 that are matched. An annular welding groove 3 is arranged on the annular side wall of the upper shell of the gear box, and the cross section of the welding groove 3 is rectangular, such as figure 2 shown. The inner end face of the gear box middle shell matches the inner end face of the welding groove 3, and a packing cavity 4 is arranged between the outer end face of the welding groove 3 and the outer end face of the gear box middle shell. The middle shell of the gear box is in contact with the rectangular welding groove 3 and is provided with a welding angle 5 at the top corner of one side close to the stuffing cavity, and the angle of the welding angle is 45°, as shown in ima...

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Abstract

The invention discloses an ultrasonic welding structure of a plastic planetary gearbox. The ultrasonic welding structure comprises a gearbox upper casing and a gearbox middle casing which are matched with each other, a welding groove which is matched with the upper edge of the gearbox middle casing is formed in the annular side wall of the gearbox upper casing, the inner end face of the gearbox middle casing is matched with the inner end face of the welding groove, and a packing cavity is arranged between the outer end face of the welding groove and the outer end face of the gearbox middle casing. By the aid of the ultrasonic welding structure, the welding strength of the planetary gearbox upper casing and the gearbox middle casing is improved, the stability of the whole gearbox casing is further guaranteed, the phenomenon of loosening of the gearbox casing caused by vibration during operation of a vehicle is effectively prevented, and the reliability and the stability of operation of the gearbox are improved.

Description

technical field [0001] The invention relates to the technical field of engine exhaust emission control devices, in particular to the structure of a planetary gearbox applied to an electric EGR valve. Background technique [0002] The engine exhaust gas recirculation system (EGR system for short) is used to reduce the emission of nitrogen oxides in the exhaust gas. Its operation mode is that when the engine is running under load, the EGR valve is opened, and a small amount of exhaust gas discharged from the engine is returned to the intake manifold. And enter the cylinder together with the fresh combustible mixture for re-combustion. The principle is to use the large amount of CO contained in the exhaust gas 2 , while CO 2 It cannot burn but can absorb a large amount of heat, reducing the combustion temperature of the mixture in the cylinder, thereby reducing the generation of NOx and reducing exhaust pollution. [0003] At present, in order to reduce weight and cost, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/02B29C65/08
Inventor 邓树平
Owner WUXI LONGSHENG TECH
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