JPS5930217Y2 - Recoil starter mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a Kaida glue coil starter for a small internal combustion engine.

The restoring force of the mainspring is used to catch the rope on the reel, and the coil starter has one, and the conventional coil starter has a rotatable holding plate.

It was equipped with a coil spring 4 to control the noise, and had a mechanism for making the ratchet attached to the reel appear and retract by means of a restraining plate.

Therefore, when the engine is running, vibrations cause the ratchet and the restraining plate to rotate, causing the ratchet to easily pop out and hit the high-speed rotating pulley, potentially damaging the ratchet and the restraining plate.

The present invention eliminates the drawbacks of the conventional metal, and will be described in detail below with reference to the drawings of an embodiment of the present invention.

Figure 1 is a vertical sectional view of the recoil starter mechanism of the present invention, Figure 2
The figure is a partially cut-away plan view of the machine during operation.

In the figure, 1 is a pulley directly connected to the engine, and 2
is a case, and a shaft 3 is coupled to the center inside the case.

A rotatable ring 4 and a coil spring 5 are inserted into the shaft 3.

Reference numeral 6 denotes a mainspring for rewinding the pulled-out rope 7 into a recess 4a provided on the outer periphery of the gold reel 4.

Reference numeral 8 denotes a holding plate, which is fixed to the end of the shaft 3 by a NAND 9, and the coil spring 5 is compressed and held between this holding plate 8 and a step provided on the shaft 3, and one end is pressed against the holding plate 8. It provides a friction blade.

It was a residue. There is a ratchet 10 between the holding plate 8 and the reel 4, and one end of the ratchet 10 is loosely inserted into a shaft hole (not shown) provided on the surface of the reel 4, and rotates as a fixed fulcrum of this shaft hole. This is possible, and the ratchet 10 is prevented from rotating beyond a certain angle by the receiving portions 4b and 4c provided on the measuring surface of the reel 4.

It was a residue. The other end of the coil spring 5 extends outward as an arm portion 5a, and is bent in the sound axis direction to form a protrusion 5bk.
The reel 41111I of the ratchet 10 is provided with an inverted guide groove 10a that is engaged with the guide groove 10a.

Next, the operation of the coil starter mechanism constructed in this way will be explained with reference to 3 diagrams.

Figure 3A shows the state before operation, and from this state the lob 7 (second
(See figure) When the money is drawn, the reel 4 rotates in the direction of the arrow, and the ratchet 10 also moves together.

At this time, since one end of the coil spring 5 is compressed by the restraining plate 8, a frictional force acts between them to prevent rotation, so that the coil spring 5 does not move.

Therefore, as shown in FIG. 3B, the coil spring 5
The protrusion 5b of the arm HB5a contacts the side wall of the guide groove 10a of the ratchet 10 rotating together with the reel 4, and when the reel 44 rotates further, the tip of the ratchet 10 rotates outward, as shown in FIG. 3C. Then, the receiving portion 4b of the reel 4 hits the ratchet 10 and the rotation is blocked, and the ratchet 10 starts pushing the pulley 1.

At this time, the coil spring 5 was prevented from rotating due to the frictional force with the restraining plate 8, but since the ratchet 10 pushes with a force stronger than this frictional force, the coil spring 5 starts rotating 4 and becomes integral with the reel 4. It rotates together with the pulley 1 that is directly connected to the engine to start the engine.

Next, when the hand is released from the rope 7 and the restoring force of the mainspring 6 is used to wind the rope 74 onto the reel 4, the reel 4 rotates in the opposite direction to the arrow, so the ratchet 10
also rotates together.

At this time, the ratchet 10 that rotates is pulled by the protrusion 5b of the arm 5a of the coil spring 5, which is blocked by the frictional force with the restraining plate 8, so that the ratchet 10 hits the receiving part 4c of the reel 4 and Completely return to the state shown in Figure A.

Furthermore, when the reel 4 is rotated by the mainspring 6, the ratchet 10 is pulled by the coil spring 5 with a force stronger than the frictional force with the restraining plate 8 that prevents the reel 4 from rotating. The rope 7 rotates in unison with the rill 4, and the rope 7 is wound around the rill 4.

I cut it. When the ratchet 10 tries to pop out due to vibrations during engine operation.

The ratchet 10 does not fly out because the rotary ring is blocked by the protrusion 5b of the arm 5a of the coil spring.

As explained above in detail 1, the two inventions reduce the number of parts, prevent the ratchet from popping out due to vibrations during engine operation, eliminate damage to parts, and improve durability. effective.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the coil starter mechanism bar according to the present invention, FIG. 2 is a partially cutaway front view of the coil starter mechanism in operation, and FIG. 3 is an explanatory view of its operation. A is a diagram showing before production, B is a diagram showing the process in progress, and C is a diagram showing the product after production. 1...Pulley, 2...Case, 3...
...axis, 4...') -4z, 4b, 4c・
...Receiving part, 5...Coil spring, 5
a...Arm part, 5b...Protrusion, 6...
...Spring, 7...Rope, 8...
・Retainer plate, 10...Ratchet, 10a...
...Guide groove.

Claims (1)

[Scope of utility model registration request] In a coil starter that uses the restoring force of a mainspring to wind four ropes on a reel, there is a lino that is rotatably attached to the shaft that protrudes into the case, a restraining plate that is fixed to the end of the shaft, and this. It has a coil spring 4 which is compressed and held between the holding plate and the stepped part provided on the support plate and applies a frictional force of 4 between one end of the holding plate and the holding plate, and is ratcheted between the stopper and the holding plate. - The coil spring is loosely inserted into the end of the measuring surface so that it can rotate as a fixed fulcrum in the shaft hole, and the other end of the coil spring is extended to form an arm, and the tip is bent to form a protruding metal plate. The protrusion of the coil spring moves along the guide groove of the ratchet as the reel rotates in the operating direction, causing the ratchet to protrude. Coil starter mechanism.