Double-cylinder diaphragm vacuum pump

Abstract

The invention provides a double-cylinder diaphragm vacuum pump. The double-cylinder diaphragm vacuum pump comprises a pump body, a pump cover, a sealing ring, a diaphragm assembly, a connecting rod, a fastening bolt, a connecting rod cover and a motor assembly; a motor shaft of the motor assembly is provided with a crankshaft-imitated section; the whole connecting rod is in a Y shape, one end of the connecting rod is a straight rod and is fixedly connected with an internal thread on a diaphragm through an external thread to form an integral part, the other end of the connecting rod is a fork-shaped part with an arc-shaped groove, and two threaded holes are formed in the end face of the fork-shaped part; the whole connecting rod cover is semicircular, and two bolt through holes are formed in the connecting rod cover; and the fork-shaped part of the connecting rod and the connecting rod cover enclose the crankshaft-imitated section of the motor shaft from two sides correspondingly and are connected into an annular sleeve through the fastening bolt, and the annular sleeve is in clearance fit with the motor shaft. According to the technical scheme, the connecting rod and the connecting rod cover are connected into the annular sleeve through the fastening bolt, and the annular sleeve sleeves the crankshaft-imitated section of the motor shaft, so that the structure is simple, and mounting and dismounting are very convenient.

Description

technical field [0001] The invention relates to the technical field of automobile brake booster systems, in particular to an electronic vacuum pump in the brake system. Background technique [0002] The electronic vacuum pump is the main component of the brake booster system on the car, and the brake system on the car chassis is crucial to the safety of car driving. The vacuum on a conventional automotive vacuum booster is provided by a naturally aspirated engine. Currently, engine development projects are aimed at increasing the efficiency of drive methods and further saving energy. For example: try not to open the throttle valve when starting the engine, otherwise the vacuum provided by the engine to the braking system will be insufficient under certain working conditions, which will greatly reduce the safety of the braking system, so the electronic vacuum pump solves this problem . However, the installation of the internal eccentric structure of the diaphragm vacuum pu...

AI Technical Summary

Problems solved by technology

However, the installation of the internal eccentric structure of the diaphragm vacuum pump in the electronic vacuum pump is complicated, and special tooling is required to complete the assembly, and it is not only very troublesome to disassemble if there is a problem after assembly, but also damage the motor and its matching structural parts.

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