Bidirectional automatic variable-speed motor transmission device

Abstract

The invention provides a bidirectional automatic variable-speed motor transmission device, belonging to the technical field of machines. According to the bidirectional automatic variable-speed motor transmission device, the problem that an existing bidirectional automatic variable-speed motor transmission device has a high assembling precision requirement is solved. The bidirectional automatic variable-speed motor transmission device comprises a shell, an input shaft and a transmission shaft, wherein the input shaft and the transmission shaft are arranged in the shell, a driving gear is fixed on the input shaft, the transmission shaft is sleeved with a transmission gear, a connecting sleeve is fixed on the transmission gear, the transmission shaft is connected with a transmission sleeve through a spline, and the transmission sleeve is located above the connecting sleeve; a combining mechanism and a separating mechanism are arranged between the transmission sleeve and the connecting sleeve, a bidirectional ring is arranged outside the connecting sleeve, a bidirectional mechanism is arranged between the connecting sleeve and the bidirectional ring, and a blocking part which protrudes upwards is arranged on the bidirectional ring; and a propping part which protrudes downwards is arranged on the edge of the lower end of the transmission sleeve and can prop against the blocking part to separate the transmission sleeve from the transmission shaft, and a blocking structure is arranged between the propping part and the blocking part. The bidirectional automatic variable-speed motor transmission device has the advantages of low assembling precision requirement, high use safety and the like.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a transmission device, in particular to a bidirectional automatic variable speed motor transmission device. Background technique [0002] In order to overcome the shortcomings of traditional brushless hub motors, brushless differential motors or series motors in terms of climbing performance and speed during use, electric tricycles have begun to use two-way automatic variable speed motor transmission mechanisms, which pass through one-way cards. The forward or reverse of the electric tricycle can be realized by the cooperation of the head, the forward one-way device and the reverse one-way device. However, the current two-way automatic variable speed motor transmission mechanism of this structure has the disadvantages of uncompact structure, scattered distribution of parts, and excessive space occupation. And other issues. [0003] In order to solve the above problems, the applic...

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Problems solved by technology

[0004] However, there are also some defects in the above-mentioned two-way automatic variable speed motor transmission device: in this two-way automatic variable speed motor transmission device, the separation mechanism between the connecting part and the transmission part includes a guide assembly that separates the connection part and the transmission part and uses The limit piece in which the transmission part and the connecting part are kept separated. The limit part includes a bar-shaped limit block and a compression spring 2. There is a stop edge on the lower side wall of the transmission part. When the rotating shaft rotates clockwise Guide assembly 1 is separated from the connecting piece and disengaged from the main shaft upwards. The outer end of the limit block is pressed against the lower side wall of the transmission part under the elastic force of the compression spring 2 and meets the stop edge on the lower side wall of the transmission part. abut against each other, thereby supporting the transmission member, keeping the transmission member separated from the connecting piece and disengaged upward from the drive shaft

However, it should be noted that both the limit block and the compression spring two are installed in a connecting pipe. Under the action, it protrudes outward, so there must be a certain gap between the limit block and the connecting pipe, and the limit block must be able to accurately offset the stop edge on the lower side wall of the transmission part after being extended. Damn, then the precision requirements for assembly become very high. Once the assembly is not in place, the limit block will not be able to keep the transmission part separated from the connecting part when the shaft rotates clockwise, making the entire transmission device Failure occurs due to failure, which affects the safety of use. If this situation occurs during the driving process of the car owner, it will even affect the life safety of the car owner.

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