JPS6040856Y2 - Recoil starter tow string locking device - Google Patents

Description

[Detailed description of the invention] The present invention is a coil starter for starting an engine by winding a tow string around a reel with flanges at both ends of the body and pulling the tow string strongly. This relates to a tow string locking device for a glue coil starter for locking one end to a reel.

Conventionally, this type of tow string locking device has a circular locking hole that passes through the flange portion in the axial direction, and a lock that fits into the locking hole to lock one end of the tow string. However, since this locking piece was formed in a cylindrical shape,
During assembly, after locking the locking piece to one end of the tow string, when inserting it into the locking hole, the tow string interferes and the locking piece cannot be inserted into the locking hole. For this,
A groove is cut out from the locking hole to the outer periphery of one of the flange parts, and the traction cord is passed through this groove to insert the locking piece into the locking hole.

Therefore, since the flange part is cut out by the groove part, the strength of the flange part is reduced and there is a risk of breakage, and there are also disadvantages such as interference with the tow string at the circumferential cut part.

In the present invention, one side of the aforementioned locking piece is formed into a substantially right semi-cylindrical surface, and the opposite surface is formed into a substantially curved semi-cylindrical surface, thereby locking one end of the tow string to the locking piece. A recoil starter that can be easily inserted into the locking hole from the outside of one flange after it has been stopped, eliminates the need to cut out the flange and provide a groove, and can maintain the strength of the flange. - seeks to provide a tow strap locking device.

Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

In FIGS. 1 to 4, 1 is a flywheel fixed to the end of the rotating shaft 3 of the engine with a nut 5, and 7 is a cooling fan fixed to the flywheel 1 with body bolts 9.

11 is a recoil starter, which is constructed as follows.

That is, the reel 13 is rotatably supported by a support shaft 17 provided in the fan case 15, and has flange portions 21, 21 at both ends of the body portion 19, and a ratchet portion 23 at the end.
is provided.

25 is a screw for regulating the movement of the reel 13 in the axial direction via the washer 27.

Reference numeral 29 denotes a retaining piece rotatably fitted to the body of the body bolt 9, which is biased by the bullet 31 in the direction of arrow A in FIG. As it rotates, it rotates in the direction opposite to the arrow A against the bullet 31 due to centrifugal force and is separated from the ratchet portion 23.

33 is a spiral spring that urges the reel 13 to rotate in the l direction.

Reference numeral 35 denotes a circular locking hole provided through the flange portion 21° 21 in the axial direction, and 37 is a locking piece that fits into the locking hole 35 and locks one end of the tow string 39. Made of resin,
One end of the locking string is integrally welded and molded during heat molding.

The other end of the tow string 39 connects to the starter bundle (not shown).
and is wound around the body 19 by a spiral spring 33.

The locking piece 37 has an alternating cylindrical surface 41 formed on one side in the direction in which the traction cord 39 extends, and a curved semi-cylindrical surface 43 formed on the opposite surface.

In the above configuration, when starting the engine, the tow string 39 is connected to the starter bundle (not shown).
When pulled strongly, the reel 13 rotates against the spiral spring 33, and the rotation shaft 3 rotates via the cooling fan 7 and the flywheel 1 via the engagement piece 29 that engages with the ratchet portion 23, and the engine starts.

When the engine starts and the rotary shaft 3 rotates, the engagement piece 29 separates from the ratchet portion 23 due to centrifugal force.

Further, when the rotation of the engine is stopped, the engaging piece 29
1 to engage the ratchet portion 23 again.

To insert the locking piece 37 into the locking hole 35, pull the tow string 39
The other end is inserted from the outside of one flange part 21 through the locking hole 35 between the flange parts 21 and 21, and the tow string 3
9 and insert one end of the locking piece 37 into the locking hole 35.
When the tow string 39 is inserted into the locking hole 35 and the alternating cylindrical surface 41 and deformed, the locking piece 37 rotates around this part and the other end is pressed. While the cylindrical surface 43 and the inner surface of the locking hole 35 slide, the locking piece 37 engages the locking hole 3.
5.

In addition, FIG. 5 shows another embodiment, in which one side of the locking piece is formed into an alternating cylindrical surface, and one end side of the opposite side is formed into an alternating cylindrical surface, and the other end side is formed into a curved semi-cylindrical surface. It is formed on a surface and belongs to the present invention.

Note that the term "alternating cylindrical surface" as used in the present invention refers to a cylindrical surface whose center line is straight, divided in half by a plane containing the axis.

Furthermore, a curved semi-cylindrical surface refers to a convex portion of a cylindrical surface whose center line is curved, which is divided by a curved surface that includes the center line and is perpendicular to the plane that includes the curved center line. in,
It also includes a hemisphere.

As described above, the present invention provides a coil starter in which a tow cord is wound around a reel having flange portions at both ends of the body, and a circular locking hole passing through the flange portion in the axial direction; Fit the locking hole and pull the tow string 1
A locking piece for locking the end is provided, the L side of the locking piece is formed into a substantially alternating cylindrical surface, and the opposite surface is formed into a substantially curved semi-cylindrical surface. - Since this is a tow string locking device for a recoil starter, there is no need for a cutout groove in the flange part, so the strength of the flange part can be maintained, and the locking piece can be easily inserted into the locking hole. It can be detached, has a simple structure, and can be manufactured at low cost.

Note that the present invention is not limited to the above-mentioned embodiments,
It can also be implemented in other embodiments.

[Brief explanation of drawings]

Figure 1 is a side sectional view of a coil starter equipped with a device according to the present invention, Figure 2 is a front view of an embodiment of the present invention, and Figure 3 is a front view of a coil starter equipped with a device according to the present invention.
The drawings are a sectional plan view taken along the line ■--■ in FIG. 2, FIG. 4 is a front view of essential parts, and FIG. 5 is a plan view of another embodiment. Explanation of symbols representing main parts of the drawing, 13...
・Reel, 19... body, 21... flange, 35... locking hole, 37...
Locking piece, 39... Towing cord, 41...
Alternate cylindrical surface, 43... Curved semi-cylindrical surface.

Claims (1)

[Scope of utility model registration request] In a coil starter, a towing cord 39 is wound around a reel 13 having flanges 21 and 21 at both ends of the body 19, respectively, and a circular locking hole 35 is provided which passes through the flanges 21 and 21 in the axial direction. , a locking piece 37 that fits into the locking hole 35 and locks one end of the tow string 39;
and one side of the locking piece 37 is formed into a substantially right semi-cylindrical surface 4.
1, and the opposite surface is a substantially curved semi-cylindrical surface 43.
A towing cord locking device for a recoil starter, characterized in that it is formed and provided.