CN202381237U - Multi-tooth electromagnetic injection motor flywheel - Google Patents

Abstract

The utility model relates to a flywheel of a multi-tooth electric spray magnetomotor, which comprises a flywheel shell, a magnetic steel and a bushing. The outer wall of the outer circle of the flywheel shell is provided with a plurality of trigger teeth, wherein except the first trigger tooth and the last trigger tooth Except for the distance along the circumference between the teeth, the distance along the circumference between any two adjacent trigger teeth is equal, and the distance along the circumference between the first trigger tooth and the last trigger tooth is equal to the remaining two adjacent trigger teeth The distance between the teeth along the circumference is twice or three times, and it is characterized in that: the trigger teeth are located on the side of the outer wall of the outer circle deviated from the end face. The utility model is more convenient to process. When the flywheel shell is processed, only the outer circle needs to be turned, which saves the processing cost; the mass distribution is more uniform, and the dynamic balance performance is obviously improved; the position of each trigger tooth is strip-shaped trigger package is limited smaller.

Description

Multi-tooth EFI magneto flywheel

technical field

The utility model relates to the technical field of magnetic motors, in particular to a multi-tooth electrospray magnetic motor flywheel.

Background technique

Magneto is a small alternator that uses permanent magnets to generate a magnetic field, and is the ignition power source in the ignition system of a gasoline engine. The magneto ignition system is composed of switches, ignition coils, breakers, capacitors, distributors and safety discharge devices, etc. It generates high-voltage electricity and distributes it to the spark plugs of each cylinder. The magneto mostly adopts a rotating magnet structure, and the flywheel type is to install the magnet on the flywheel of the internal combustion engine, and the other components are respectively installed on the internal combustion engine, and most of them are used in single-cylinder engines. When the permanent magnet rotates in the iron core, the primary coil on the iron core induces an electromotive force (called the primary potential), and a current (called the primary current) is generated when the contacts of the breaker are closed. When the contacts of the breaker are suddenly opened and cut off When the primary current flows, the secondary coil induces a fairly high electromotive force (called the secondary potential), causing the spark plug to flash. In order to get the strongest spark plug flashover, the maximum secondary potential should be obtained; in order to obtain the maximum secondary potential, the breaker contacts should be closed when the primary potential is zero and open when the primary potential is maximum. In the prior art, two trigger teeth are usually processed on the outer surface of the magneto flywheel housing for general ignition systems.

In order to meet the requirements of the EFI system on the magneto, Chinese patent CN201180601 discloses a multi-tooth EFI magneto flywheel for motorcycles, which includes a flywheel housing, magnetic steel and bushings, and a plurality of trigger teeth are arranged on the outer wall of the flywheel housing. A plurality of trigger teeth are evenly arranged on the outer wall of the flywheel housing, except for the distance along the circumference between the first trigger tooth and the last trigger tooth, the distance along the circumference between any two adjacent trigger teeth is equal, and the first The distance along the circumference between one trigger tooth and the last trigger tooth is equal to twice or three times the distance along the circumference of any other two adjacent trigger teeth. The flywheel housing is integrally formed by the housing and the shaft sleeve.

In the above-mentioned patented technology, each trigger tooth is located on the outer surface of the flywheel shell and on the side of the end face. The disadvantages are: 1. The processing is inconvenient. When the flywheel shell is processed, the outer circle and the end face need to be turned; 2. Quality When the flywheel rotates at a high speed (usually up to 6000-12000 rpm), the dynamic balance performance is not good; 3. The position of each trigger tooth limits the position of the trigger package. Needs to be improved.

Contents of the invention

The utility model aims to provide a multi-tooth electrospray magnetic motor flywheel with convenient processing, good dynamic balance performance and less restricted position of the trigger package.

The technical solution of the utility model is as follows:

A flywheel for a multi-tooth electrospray magnetomotor, comprising a flywheel housing, magnetic steel and bushings, the outer wall of the outer circle of the flywheel housing is provided with a plurality of triggering teeth, wherein except the first triggering tooth and the last triggering tooth along the circumference The distance along the circumference between any two adjacent trigger teeth is equal, and the distance along the circumference between the first trigger tooth and the last trigger tooth is equal to the distance along the circumference of any other two adjacent trigger teeth double or triple, characterized in that each trigger tooth is located on the side of the outer wall of the outer circle deviated from the end face.

Further technical solutions are:

The trigger teeth are strip-shaped, all of which start near the opening surface of the flywheel, and their length accounts for about 1/2 to 3/4 of the axial length of the outer wall of the outer circle.

Because the utility model adopts the above-mentioned technical scheme, the processing is more convenient. When the flywheel shell is processed, only the outer circle needs to be turned, which saves the processing cost; the mass distribution is more uniform, and the dynamic balance performance is obviously improved; each trigger tooth is strip-shaped The location of the trigger packet is less restricted. The object of the invention is realized conveniently.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Accompanying drawing 1 is the structural representation of the utility model embodiment.

The serial numbers in attached drawing 1 are: 1. end face; 2. outer wall of outer circle; 3. trigger tooth.

Detailed ways

Referring to accompanying drawing 1, the multi-tooth EFI flywheel shown in the embodiment of the utility model includes a flywheel housing, magnetic steel and bushings, and a plurality of trigger teeth 3 are arranged on the outer circular wall 2 of the flywheel housing, except for Except the distance along the circumference between the first trigger tooth and the last trigger tooth, the distance along the circumference between any two adjacent trigger teeth is equal, and the distance along the circumference between the first trigger tooth and the last trigger tooth The distance is equal to twice or three times the distance along the circumference of any other two adjacent trigger teeth, and each trigger tooth is located on the side of the outer wall of the outer circle deviated from the end face 1, and is in the shape of a strip, starting near the opening surface of the flywheel. Its length accounts for about 3/4 of the axial length of the outer wall of the outer circle. The embodiment of the utility model is more convenient to process. When processing the flywheel shell, it only needs to turn the outer circle, which saves the processing cost; because each trigger tooth is located on the side of the outer wall of the outer circle deviated from the end face 1, the mass distribution of the flywheel is more uniform. The balance performance is significantly improved; each trigger tooth is strip-shaped, and the position of the trigger package is less restricted. The object of the invention is realized conveniently.

The above-mentioned drawings and embodiments are only used to illustrate the utility model, and do not constitute any limitation to the protection scope of the utility model.

Claims (2)

1. multiple tooth EFI magnetogenerator flywheel; Comprise flywheel casing, magnet steel and lining; The cylindrical outer wall of said flywheel casing is provided with a plurality of triggering teeth; Wherein trigger between tooth and last triggering tooth along the distance of circumference except that first; All the other arbitrarily adjacent two are triggered that the distance along circumference equates between teeth, and first triggers between tooth and last triggering tooth along the distance of circumference and equal all the other any two adjacent triggering teeth along the twice of the distance of circumference or three times, it is characterized in that: the said tooth that respectively triggers is positioned at the cylindrical outer wall and departs from end face one side.

2. multiple tooth EFI magnetogenerator flywheel according to claim 1 is characterized in that: the said tooth that respectively triggers is strip, all originates near flywheel opening surface place, and its length accounts for 1/2 to 3/4 of cylindrical outer wall axial length.

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