CN2825993Y

CN2825993Y - Mechanism for clamping magnetic shoe for gasoline engine flywheel ignition

Info

Publication number: CN2825993Y
Application number: CN 200520115658
Authority: CN
Inventors: 阮其荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-30
Filing date: 2005-07-30
Publication date: 2006-10-11
Anticipated expiration: 2015-07-30

Abstract

The utility model relates to a magnetic tile clamping mechanism for gasoline engine flywheel ignition, which is characterized in that the non-air gap circular arc surface of a tile-shaped permanent magnet is provided with a magnet clip which is inosculated with the circular arc surface and has an approximately equal width to the circular arc surface, and the magnet clip is held on the slope at both ends of the tile-shaped permanent magnet through longitudinal partial incisions at both ends of the magnet clip after bending. The utility model can be fixed on a flywheel body through mould pressing cast aluminum or mould pressing injection molding, and the utility model has the advantages of simple technique and structure, high work efficiency and low cost. Aiming at problems existing in the usual design, the utility model cancels a screw through hole of the magnetic tile, and the mechanical strength of the magnetic tile can be enhanced; fastening screws are cancelled, which can avoid that the hard brittle magnetic tile frequently chips because of the stress action; a housing plate which can form a magnetic flux circuit on the magnetic tile air gap working surface is cancelled, which can enhance the air gap magnetic field, and consequently, the ignition potency is enhanced.

Description

Petrol engine flywheel igniting magnetic shoe clamping device

Technical field.The utility model relates to a kind of petrol engine flywheel igniting magnetic shoe clamping device.

Background technique.For making the petrol engine flywheel have ignition function concurrently, it is normally corresponding on the inner periphery of a certain section of the flywheel of high speed rotating or several sections or outer periphery that to set an one or a few blocks watt shape permanent magnet be magnetic shoe, so reasonable reliability that the igniting usefulness of magnetic shoe and magnetic shoe are installed, just become the focus of concern, application number is the design proposal that 02222866.7 Chinese patent application " a kind of general gasoline engines flywheel " has proposed a kind of fixedly magnetic shoe, but this scheme remains in deficiencys such as structure more complicated, technological requirement height, processing time consumings.

Summary of the invention.The purpose of this utility model provide a kind of simple in structure, technology is easy, cost of production is lower, and can improve the petrol engine flywheel igniting magnetic shoe clamping device of igniting usefulness.

The utility model is so to realize: the magnetic shoe clamping device use in a kind of petrol engine flywheel igniting, it is characterized in that non-air gap arc surface at watt shape permanent magnet be equipped with one close with the identical width of this arc surface and press from both sides with the magnet of vertical partial cut-out through being held on after the bending on watt inclined-plane, shape permanent magnet two ends of its two ends suitable length.

The magnetic shoe fixing device of common petrol engine flywheel, the patent application that retrieves as described above is the same, at magnetic shoe air gap arc surface one cover plate with holes is housed, on magnetic shoe, have through hole again, with screw both are fastened on the flywheel body again, magnetic shoe is fixed as interference fit by the guard shield and the flywheel body of casting again simultaneously, the utility model has saved screwing through hole, screw, cover plate, guard shield, and the interference fit that wastes time and energy, as long as this magnetic shoe clamping assembly is fixed on the flywheel body with mold pressing cast aluminium or mold pressing injection moulding, not only simplify the structure and technology, improve work efficiency, reduce cost, and make the design of magnetic shoe all more become reasonable on the electromagnetism He on the structure: cancel the screwing through hole of magnetic shoe, can improve the mechanical strength of magnetic shoe itself; The cancellation fastening screw trip bolt can be avoided hard crisp magnetic shoe stress effect and often causes cracked; Cancellation can form the cover plate on the magnetic shoe air gap working surface of flux circuit, has then strengthened air-gap field, thereby has improved igniting usefulness.

Description of drawings.Now be described further with following embodiment and accompanying drawing.

Fig. 1 is interior round GAP TYPE magnetic shoe clamping device cross-sectional schematic.

Fig. 2 is a cylindrical GAP TYPE magnetic shoe clamping device cross-sectional schematic.

Fig. 3 is the partial schematic sectional view of interior round air gap petrol engine flywheel.

Fig. 4 looks the broken section enlarged diagram for the left side of Fig. 3.

As shown in the figure: 1, flywheel body 2, cast aluminium 3, watt shape permanent magnet 4, magnet folder

Mode of execution.Shown in Fig. 1,3, with interior round GAP TYPE petrol engine flywheel magnetic shoe clamping device is example, it is characterized in that watt exterior arc surface of shape permanent magnet 3 be equipped with width that coincide with this arc surface close and with vertical partial cut-out of its two ends suitable length through being held on the magnet folder 4 on watt inclined-plane, shape permanent magnet two ends after the bending.Assembly (as shown in Figure 1, 2) back made by watt shape permanent magnet 3 and magnet folder 4 and flywheel body 1 usefulness mold pressing cast aluminium is loaded into one.

Claims

1, the magnetic shoe clamping device use in the igniting of a kind of petrol engine flywheel, it is characterized in that non-air gap arc surface at watt shape permanent magnet (3) be equipped with one close with the identical width of this arc surface and press from both sides (4) with the magnet of vertical partial cut-out through being held on after the bending on watt inclined-plane, shape permanent magnet two ends of its two ends suitable length.