JPS632601Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heat shielding device for a starter motor, in which radiant heat from an internal combustion engine is shielded by a heat shield plate.

The conventional heat shielding device for a starter motor of this type is
The figure shows a front view with a part in cross section. Reference numeral 1 denotes a starting motor mounted close to an internal combustion engine (not shown), 2 denotes a heat shield attached to one side of the starting motor to shield against radiant heat from the internal combustion engine 1, and 3 denotes a DC motor for the starting motor 1.
A rear bracket 5 is attached to the yoke 4 by a specially shaped through bolt 6. This through bolt 6 has a hexagonal head 6a with a threaded portion 6b protruding from the top, which is passed through a bolt hole 2b in the bent portion 2a at the rear end of the heat shield 2, and is fastened by a nut 8 with washers 7, 7 in place. The heat shield 2 is as shown in FIG.
In addition to the bent portion 2a at the rear end, a bent portion 2c is provided at the front end, and a notched hole 2d is provided for a screw. The heat shield 2 is fastened by a mounting screw 11 which mounts the electromagnetic switch 9 to a front bracket 10 through the notched hole 2d.

As described above, the heat shield plate 2 is attached to the starter motor 1 to prevent radiant heat such as exhaust heat from the internal combustion engine from being directly applied to the DC motor 3 and the electromagnetic switch 9.

In the conventional device described above, the heat shield plate 2 resonates due to the rotational vibration of the internal combustion engine, and this resonance sometimes causes the bent portions 2a and 2c to be damaged due to fatigue fracture.

The purpose of this invention is to attach a heat shield plate to a starter motor via a vibration-proof rubber member to prevent resonance and eliminate damage.

FIG. 3 is a perspective view of a heat shield plate showing a heat shield device according to an embodiment of the invention. The heat shield plate 20 has a bent portion 20a formed at the rear end and a cutout hole 2 for mounting.
0b is provided, and a bent portion 20c is formed at the front end, and a notch hole 20d for attachment is provided.

This heat shield plate 20 is attached to the starting motor as shown in FIGS. 4 and 5.

In FIG. 4, a threaded portion 21 is attached to the top of the hexagonal head 21a of the through bolt 21 to which the rear bracket 5 is attached.
b is extended and serves as a mounting screw means. 22
This is a vibration-proof rubber member fitted into the threaded portion 21b of the through bolt 21, and is constructed by a rubber body 24 fixed to a collar 23 made of a metal material. The vibration isolating rubber member 22 is fitted with a washer 25 and attached with a nut 8. The heat shield plate 20 has one bent part 2
The notch hole 20b of 0a is pushed into the outer periphery of the rubber body 24, and the rear side is elastically supported.

Furthermore, in FIG. 5, a vibration-proof rubber member 27 is attached to a mounting screw 26 for attaching the electromagnetic switch 9 to the front bracket 10. The anti-vibration rubber member 27 includes a collar 28 made of a metal material and a rubber body 29.
is constructed by being fixed. 30 is a washer. The notch hole 20d of the other bent portion 20c of the heat shield plate 20 is pushed into the outer periphery of the rubber body 29, and the front side is elastically supported.

FIG. 6 is a perspective view of a heat shield plate showing another embodiment of this invention. The heat shield plate 31, like the heat shield plate 20 shown in FIG. 31d, which are attached to the starter motor 1 via anti-vibration rubber members 22 and 27, respectively. Further, the heat shield plate 31 has a contact protrusion 30e bent and formed in the middle of the upper part thereof, so as to contact the body of the electromagnetic switch 9. Reference numeral 32 denotes an abutting protrusion fixed by welding or the like to the lower intermediate portion of the heat shield plate 31, and is adapted to abut against the yoke 4 of the DC motor 3. Due to the contact between these protrusions 31e and 32, the resonance point of the heat shield plate 31 is significantly raised, the vibration isolation effect is greatly improved, and the heat shield plate 31 is prevented from resonating with the starting motor 1. Prevented.

As described above, according to this invention, since the heat shield plate is attached to the starting motor via the vibration isolating rubber member, resonance of the heat shield plate due to rotational vibration of the internal combustion engine is prevented, and damage to the heat shield plate can be eliminated. .

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing a conventional heat shielding device for a starting motor, Fig. 2 is a perspective view of the heat shield plate shown in Fig. 1, and Fig. 3 is a shield according to an embodiment of the present invention. A perspective view of the heat shield plate of the thermal device, FIG. 4 is a cross-sectional view showing the attachment of the bent part at the rear end of the heat shield plate of FIG. 3 to the starting motor, and FIG. 5 is a perspective view of the heat shield plate of FIG. Sectional view showing the attachment of the bent part of the front end to the starting motor, No. 6
The figure is a perspective view of a heat shield plate showing another embodiment of this invention. 1...Starting motor, 21...Through bolt, 8...
...Nut, 26...Mounting screw, 20...Heat shield plate, 20a...Rear bent part, 20b...Mounting notch hole, 20c...Front bent part, 20
d... Notch hole for mounting, 22... Vibration-proof rubber member, 23... Rubber body, 27... Vibration-proof rubber member, 2
9...Rubber body, 31...Heat shield plate, 31a...Rear bent portion, 31b...Notch hole for mounting, 31
c...Front bent portion, 31d...Notch hole for attachment, 31e...Protrusion, 32...Protrusion. Note that the same reference numerals in the drawings indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) A rear anti-vibration rubber member attached to the rear of the starting motor and held by screw means, and a front anti-vibration rubber member attached to the front of the starting motor and held by screw means. The mounting notch hole provided on the rear end side of the member is pressed into the middle part of the outer periphery of the rubber body of the rear anti-vibration rubber member, and the mounting notch hole provided on the front end side A heat shielding device for a starter motor, comprising a heat shield plate that is pressed into and elastically supported by a middle part of the outer circumference of a rubber body of a front vibration-proof rubber member, and covers an internal combustion engine side of the starter motor. (2) The heat shield for a starter motor as set forth in claim 1 of the utility model registration claim, characterized in that the heat shield plate has a protruding portion protruding toward and in contact with the starter motor in its intermediate portion to prevent resonance. Device.