JPS6036781Y2 - Recoil starter device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a recoil starter device for an engine in which a recoil starter and a fan are provided close to each other.

Conventionally, in this type of engine, a fan for cooling the engine is provided at one end of the engine crankshaft, and a recoil starter is provided outside and close to this fan to cover the recoil starter. Air intake holes were provided around the outer circumference of the cover.

In this case, since the air sucked in from the air intake hole passes through the vicinity of the outer circumference of the coil starter and is sucked into the fan, dust adheres to the operating parts of the recoil starter such as the ratchet pawl, causing the ratchet pawl to operate. This caused the recoil starter to malfunction.

For this reason, a filter was installed to cover the air intake hole to remove dust, but in the past, this filter was made by cutting a mesh material to a predetermined size.
In order to lock the filter, it is necessary to screw the filter to the cover or to provide support means for fixing the filter to the cover, resulting in a complex structure and troublesome installation work.

The present invention provides a string-like filter made of a sponge-like breathable material that is wrapped around the outer circumference of the cover and is held by engaging with the air intake hole by a locking part protruding from the inner surface. By providing the locking portion integrally with the filter, it is possible to prevent dust from entering or adhering to the inside of the recoil starter, thereby preventing malfunction of the recoil starter due to malfunction of the ratchet pawl, etc. It is an object of the present invention to provide a recoil starter device that has a simple structure, is easy to assemble, and can be manufactured at low cost.

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

In the figure, 1 is a fan fixed to one end of the crankshaft 3 of the engine with a nut 5, and wings 7, 7.・
... is provided.

Reference numeral 9 is a coil starter which is arranged in parallel with the fan 1 and is constructed as follows.

That is, 11 is a cover provided integrally with the fan case 15 that is fixed to the crankcase 13 of the engine.
It is provided to cover the outer periphery and side surfaces of the recoil starter 9.

Reference numeral 17 denotes a support shaft provided integrally and protruding from the inner wall of the cover 11, and is provided coaxially with the crankshaft 3.

19 is a reel rotatably fitted to the outer periphery of the spindle 17;
A groove 23 around which the starter string 21 is wound is provided on the outer periphery.

A presser foot 25 is fixed to the end of the support shaft 17 by a bolt 27, and restricts movement of the reel 19 in the axial direction.

The starter string 21 has one end inserted into the locking hole 29 at the bottom of the groove 23.
A handle 33 is fixed to the other end of the cover 11 through a support hole 31 provided on the outer periphery of the cover 11 .

The starter string 21 is wound around the groove 23 in a direction in which the reel 19 rotates in the same direction as the rotational direction of the crankshaft 3 by pulling the handle 33.

35 is a ratchet claw rotatably provided on the side of the reel 19 by a shaft 37, and a plurality of engagement rods 39, 39 . ... is engaged only in the l direction.

That is, the ratchet pawl 35 engages with the engagement rod 39 due to centrifugal force when the reel 19 rotates relative to the fan 1 in the direction of rotation of the crankshaft 3, and when the reel 19 rotates relative to the fan 1 in the opposite direction. is configured to be disengaged by a bullet (not shown).

41 is a spiral bullet, one end is locked to the reel 19,
The other end is locked to the cover 11, and the starter string 21 urges the reel 19 in the direction in which the groove 23 is wound.

43,43. . . are air intake holes arranged in parallel on the outer periphery of the cover 11, which draw outside air into the fan 11.

45 is wrapped around the outer periphery of the cover 11 and is inserted into the air intake holes 43, 43 . A string-like filter that covers ... and is made of a sponge-like breathable material.

47.47. . . are locking portions that protrude from the inner surface of the filter 45, which are integrally formed during filter molding, and are connected to the air intake holes 43, 43. ... to hold the filter 45 on the outer periphery of the cover 11.

In the above configuration, when starting the engine, when the handle 33 is strongly pulled, the reel 19 moves the ammunition 4
1 and rotates in the same direction as the rotational direction of the crankshaft 3.

The ratchet pawl 35 engages with the engagement rod 39 by centrifugal force, causing the fan 1 to rotate, the crankshaft 3 to rotate, and the engine to start.

When the engine rotates and the fan 1 rotates, the relative rotational direction of the reel 19 of the fan 1 is reversed, and the ratchet pawl 35 is released from engagement with the engagement rod 39 by a bullet (not shown).

When the handle 33 is returned, the reel 1 is moved by the elastic force of the bullet 41.
9 rotates in a direction opposite to the direction of rotation of the crankshaft 3, and the starter string 21 is wound into the groove 23.

The fan 1 rotates as the engine rotates, and outside air passes through the filter 45 and air intake holes 43, 43. ... enters the cover 11, and the fan 11 moves the fan case 1.
5 and is sent to the outer periphery of the engine cylinder (not shown).

Dust contained in the outside air is filtered when it passes through the filter 45, and the dust does not adhere to the actuating portion of the ratchet pawl 35 of the recoil starter 9.

The filter 45 also has air intake holes 43, 43. ... by placing it in a position that covers it and pressing the outer periphery, the locking part 4
7 can be easily locked in the air intake hole 43, and the filter 45 can be easily attached and detached.

As described above, the present invention provides an engine in which a recoil starter and a fan are provided close to each other, in which an air intake hole for the fan is provided on the outer periphery of a cover that covers the recoil starter, and the air intake hole is provided around the outer periphery of the cover. A string-like filter made of a sponge-like breathable material is provided to cover the air intake hole, and a locking portion that protrudes from the inner surface of the filter and engages with the air intake hole is formed integrally with the filter. Since it is a coil starter device, it prevents dust from entering and adhering to the recoil starter, prevents malfunction of ratchet pawls, etc., and allows the recoil starter to operate smoothly, and has a simple structure. It is easy to assemble and can be manufactured at low cost.

Note that the present invention is not limited to the above-described embodiments, and may be implemented in other embodiments.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are a side cross-sectional view and a front view, respectively, of one embodiment of the present invention. Explanation of the symbols representing the main parts of the drawing, 1...
Fan, 9...Recoil starter-111...
... Cover, 43 ... Air intake hole, 45.
...filter, 47...locking part.

Claims (1)

[Scope of utility model registration request] In an engine in which a recoil starter 9 and a fan 1 are provided close to each other, air intake holes 43, 43.・
... is provided, and a narrow filter 45 made of a sponge-like breathable material is provided that is wrapped around the outer circumference of the cover 11 to cover the air intake holes 43, 43, ..., and on the inner surface of the filter 45. The air intake holes 43, 4 protrude
3. The locking portions 47, 47 . . . A recoil starter device, characterized in that... is formed integrally with the filter 45.