JPH0441751Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a magnet generator with a pulser, and in particular,
Regarding the improvement of the mounting structure of Pulsa to the magnet generator,
For example, the present invention relates to a magnet generator with a pulsar that is directly connected to a vehicle engine or a general-purpose engine to obtain an ignition signal.

[Conventional technology]

A typical structure for attaching a pulsar to a magnet generator that is directly connected to a vehicle or general-purpose engine is a structure in which a stay fixed to the pulsar body is screwed onto the base of the stator of the magnet generator. (See the conventional example in Utility Model Application Publication No. 57-159387).

In addition, a bonding plate is buried in the contact surface of the pulsar body made of synthetic resin with the base, and a part of the bonding plate is made to protrude from both sides of the pulsar body to form a convex portion, and this convex portion is attached to the base. Some devices are configured so that the connecting plate is fitted into a recessed part in the upper surface and fastened by a screw member inserted through the base (for example, Japanese Utility Model Application No. 58-131175 and Japanese Utility Model Application No. 57) -Refer to Publication No. 159387).

[Problem that the invention attempts to solve]

In a structure in which the pulsar is installed via a stay, when the base experiences abnormal resonance, all the force due to vibration acceleration is applied to the stay, causing stress concentration on the stay.

In a structure in which the pulser is installed via a connecting plate buried in the main body, the connecting plate is fastened by a screw member inserted through the base, so it is not possible to provide a space for drawing out the lead wires directly below the pulser.

An object of the present invention is to provide a magnet generator with a pulsar that can prevent stress concentration on the stay and also ensure a space for drawing out lead wires directly below the pulsar.

[Means for solving problems]

The magnet generator with pulsar according to the present invention has a stator 5
In a magnet generator with a pulsar, in which a pulsar mounting part 8 is arranged at a predetermined location on a base 6 and extends in the radial direction, and a pulsar 13 is attached to the pulsar mounting part 8, the pulsar mounting part 8 is attached to the pulsar A strut 11 is disposed at right angles on the outer edge of the surface and integrally protrudes therefrom, and a recess 12 is recessed in the inner portion of the pulsar mounting surface of the mounting portion 8. A protrusion 19 is integrally provided on the mounting surface of the main body 14 of the pulsar 13 so as to fit into the recess 12, and a plate-shaped stay 20 is provided on the pulsar main body 14.
are arranged and fixed so as to protrude from both sides of the convex portion 19, respectively, the stay 20 is fastened to the mounting portion 8 on both sides of the pulsar body 14, and the convex portion of the pulsar body 14 19 is fitted into the recess 12 of the attachment part 8, and both the support columns 11 are in contact with the back surface of the pulsar main body 14.

[Effect]

Since the force due to vibration acceleration is dispersed from the pulsar main body to the base struts and recesses, no stress concentration occurs on the stay.

Furthermore, since the stays are fastened on both sides of the pulsar main body, a space for drawing out the lead wires can be freely provided directly below the pulsar main body.

〔Example〕

Fig. 1 is an enlarged exploded perspective view of the main parts of a magnet generator with a pulsar that is an embodiment of the present invention, Fig. 2 is an overall plan view, and Fig. 3 is a sectional view taken along the - line in Fig. 2. , FIG. 4 is a view taken along the - line in FIG. 1.

In this embodiment, the magnet generator with pulser includes a rotor, a stator, and a pulser. The rotor 1 includes a plurality of magnets 3 arranged annularly and fixed to the inner circumferential surface of a yoke 2 formed in a cylindrical shape with a bottom, and the yoke 2 is rotationally driven by an engine directly or indirectly. It is adapted to be connected to a rotating shaft (not shown). A reluctor portion 4 is provided protruding from the outer peripheral surface of the yoke 2. The stator 5 includes a base 6 formed in a substantially disk shape, and the base 6 is arranged concentrically in an opening in the yoke 2 of the rotor 1 and fixed to the outer shell of the engine.
The end surface of the base 6 on the rotor side (hereinafter referred to as the top surface)
A plurality of generator coils 7 are arranged and fixed in a ring shape within the yoke 2 so as to face the magnet 3.

A pulsar mounting portion 8 is provided on the outer periphery of the base 6 of the stator 5.
are arranged at predetermined positions and protrude in the radial direction, and the mounting portion 8 is integrally molded with the base 6 in the shape of a substantially trapezoidal plate. A substantially T-shaped recess 9 is recessed on the upper surface of the mounting portion 8 with its vertical axis arranged in the radial direction, and a pair of screw holes 10 are opened on both sides (hereinafter referred to as the left and right) of the recess 9, arranged so that the line connecting the two screw holes 10, 10 approximately coincides with a line perpendicular to the center of gravity line of the pulsar described later. Two support columns 11 are arranged at both left and right ends of the outer edge of the mounting portion 8 and protrude at right angles, and the support columns 11 are formed in the shape of a substantially right-angled triangular prism so as to abut against the pulsar main body described later from the back and side directions, respectively. A recess 12 is arranged coaxially with the vertical axis of the recess 9 and recessed to a certain depth on the inner part of the mounting portion 8, and the recess 12 is configured to fit with a protrusion protruding from the lower surface of the pulsar main body described later.

The pulsar 13 includes a main body 14 made of resin and formed into a substantially rectangular parallelepiped shape, and the main body 14 includes a core 15 whose tip is exposed from the main body 14;
A pulser coil 16 wound around a bobbin 17 and externally mounted on the core 15, and a magnet 18 as a magnetic flux source magnetically connected to the core 15 are built in. A convex portion 19 is formed into a substantially square flat plate shape and integrally protrudes from the lower surface of the main body 14, and plate-shaped stays 20 protrude from both sides of the convex portion 19 on the main body 14. It is integrally molded. A pair of insertion holes 21 are arranged at both ends of the stay 20 and opened in the vertical direction, and both insertion holes 21 are connected to the screw hole 10.
They are now consistent with each other. Main body 14
Thin flat plate-shaped protrusions 22 are disposed vertically and integrally protrude on both sides of the protrusion 2.
2 is configured such that its back surface abuts the inner abdominal surface of the support column 11.

Next, the operation and operation of assembling the mounting portion and the pulser according to the above configuration will be explained.

The pulser 13 is mounted on the upper surface of the mounting portion 8 protruding from the stator base 6 so that the tip of the core 15 is directed inward, and the left and right insertion holes 21 of the stay 20 are aligned with the left and right screw holes 10, respectively. It is arranged and abutted on. Subsequently, the threaded member 23 is inserted into the insertion hole 21 and screwed into the threaded hole 10, whereby the pulser 13 is fastened to the mounting portion 8 on the base 6.

At this time, the convex portion 19 on the lower surface of the pulsar body 14 is fitted into the concave portion 12 of the attachment portion 8, and the left and right pillars 11 are brought into contact with the back surface of the protruding portion 22 and the side surface of the body 14, respectively.

In this state, since the T-shaped recess 9 opened on the upper surface of the mounting part 8 is located directly below the pulsar 13, the lead wire 24 of the pulsar coil 16 pulled out from the lower surface of the main body 14 is wired inside the recess 9. can be done.

When the rotor 1 is driven by the engine and rotates around the stator 5, the pulser 13 detects the reluctor section 4 and generates an ignition signal. That is, when the reluctor section 5 passes near the core 15, the magnetic flux formed by the magnet 18 changes, so electricity is induced in the pulsar coil 16, which is output as an ignition signal.

When operating the engine, etc., the stator base 6
If the pulsar 13 vibrates abnormally, due to the weight of the pulsar 13,
Force is generated due to vibration acceleration. At this time, in this embodiment, the convex portion 19 on the lower surface of the pulsar main body 14
is fitted into the recess 12 on the upper surface of the mounting portion 8, so that the force that tends to tilt the pulser 13 forward is supported. In addition, a support 11 protruding from the upper surface of the mounting portion 8 is provided.
is in contact with the side surface of the pulsar body 14 and the back surface of the protruding portion 22, so the force that tends to tilt the pulsar 13 backward is supported and its amplitude is suppressed to a small level.

The pair of screw members 23 screwing the stay 20 are arranged so that the line connecting both screwing positions substantially coincides with a line perpendicular to the center of gravity of the pulser 13, so that the screw members 23 act on the stay 20. The bending moment will be suppressed to a small value.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may be modified without departing from the gist thereof.
It goes without saying that various changes are possible.

For example, the support column is not limited to a right triangular shape, but may be formed in an angular shape whose inner surface matches the corner of the rectangular parallelepiped pulsar body.

The means for fastening the stay is not limited to screw connection, but may also be rivet connection or the like.

According to the embodiment described above, the following effects can be obtained.

(1) By providing the recess 12 and the protrusion 9 that fit into each other on the abutting surfaces of the mounting portion 8 of the base 6 and the pulsar main body 14, it is possible to support the force that tends to tilt the pulsar 13 forward. The stator base 6 It is possible to reduce the vibration of the pulsar when it vibrates abnormally.

(2) By fastening the stay 20 at a position that substantially coincides with the line perpendicular to the center of gravity of the pulsar 13, the bending moment acting on the stay 20 can be suppressed to a small level. The initial fixed state of the pulser 13 can be maintained for a long time.

(3) By recessing the recess 9 directly below the pulsar 13, the lead wire 24 of the pulsar coil can be wired to the recess 9, so wiring can be done rationally.

[Effect of idea]

As explained above, according to the present invention, the force due to vibration acceleration is dispersed from the pulsar main body 14 to the support column 11 and recess 12 of the base 6, so that stress concentration on the stay 20 can be prevented. can.

Furthermore, since the stays 20 are fastened on both sides of the pulsar main body 14, a space can be freely provided directly below the pulsar main body 14 for drawing out the lead wires.

[Brief explanation of the drawing]

Fig. 1 is an enlarged exploded perspective view of the main parts of a magnet generator with a pulsar that is an embodiment of the present invention, Fig. 2 is an overall plan view, and Fig. 3 is a sectional view taken along the - line in Fig. 2. , FIG. 4 is a view taken along the - line in FIG. 1. 1... Rotor, 2... Yoke, 3... Magnet, 4... Reluctor section, 5... Stator, 6... Base, 7... Generator coil, 8... Pulsar mounting part, 9... Recess, 10... Screw hole, 11... Support, 12... Recess, 13... Pulsar, 14... Main body, 15... Core, 16... Pulsar coil, 17
...Bobbin, 18...Magnet, 19...Protrusion, 20...Stay, 21...Through hole, 22...
Projection portion, 23...screw member, 24...lead wire.

Claims (1)

[Claims for Utility Model Registration] 1 A pulsar attachment in which a pulsar mounting portion 8 is arranged at a predetermined location on the base 6 of the stator 5 and extends in the radial direction, and a pulsar 13 is attached to this mounting portion 8. In the magnet generator, a support 11 is arranged at right angles and integrally protrudes from the outer edge of the pulsar mounting surface of the mounting portion 8, and a recess is provided at the inner portion of the pulsar mounting surface of the mounting portion 8. On the other hand, a protrusion 19 is integrally provided on the mounting surface of the main body 14 of the pulsar 13 so as to fit into the recess 12, and the pulsar main body 14 has a Stays 20 are arranged and fixed so as to protrude from both sides of the convex portion 19, and the stays 20 are attached to the mounting portion 8 on the pulsar body 14.
The convex portion 19 of the pulsar body 14 is fitted into the concave portion 12 of the attachment portion 8, and both the support columns 11 are in contact with the back surface of the pulsar body 14. This is a magnet generator with a pulsar. 2. The magnet generator with a pulsar according to claim 1, wherein the stay 20 is fastened at a position that substantially coincides with a line perpendicular to the center of gravity of the pulsar 13. 3. The magnet generator with a pulsar according to claim 1, wherein a recess 9 is recessed in the mounting portion 8 of the base 6 to allow the lead wire to escape below the pulsar main body.