JP2523499Y2 - Recoil starter mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a recoil starter attached to a small internal combustion engine as a manual starter.

[0002]

2. Description of the Related Art Conventionally, a recoil starter of a small internal combustion engine (hereinafter, also referred to as an engine), for example, a recoil starter attached to a portable engine used for a brush cutter, is provided on the crankcase side of the engine. A recoil starter mounting surface is formed on the mounting surface, and the mounting end surface of the recoil starter is brought into contact with the seat surface, and a corresponding through hole of the recoil starter is provided to a screw hole provided on the crankcase side. By screwing the mounting screws,
Has been attached. The fuel tank disposed below the engine body is fixed to the engine body via an attachment called a “tank bracket” having an upper end screwed to a position near the recoil starter. In such a recoil starter mounting structure, the tank bracket uses a mounting screw of the recoil starter,
Alternatively, it is configured to be attached to the crankcase or the recoil starter using another screw. Japanese Patent Publication No. 58-47215 is a prior art of this kind.

[0003]

However, when the tank bracket is attached using the mounting screw of the recoil starter, the tank bracket must be connected to the through hole for the mounting screw of the recoil starter before the mounting screw is screwed. And the mounting hole of the tank bracket must be positioned, and when mounting and dismounting the recoil starter at the time of overhaul, the mounting screw and the tank bracket are separate bodies, and it takes time to attach and detach. In particular, when mounting, it is necessary to position the recoil starter and the tank bracket again. Further, in the overhaul, it was necessary to take care not to lose the tank bracket when the tank bracket was removed.

On the other hand, when the tank bracket is attached separately from the recoil starter using another mounting screw, the number of parts and the number of processing steps are increased, the number of assembling steps at the time of assembling is increased, and furthermore, at the time of overhaul. Tank bracket must be detached separately from recoil starter,
At this time, labor including positioning is increased.

The present invention has been made under the above-mentioned situation, and has as its object to provide a recoil starter mounting structure having a structure in which a tank bracket can be easily attached to and detached from a recoil starter.

[0006]

A recoil starter mounting structure according to the first invention is provided with a seat surface for mounting a recoil starter formed on a side of a crankcase of an engine, and a mounting surface mounted on the seat surface. The mounting structure of a recoil starter configured to house or clamp a mounting bracket of another accessory such as a tank bracket between the mounting end surface of the recoil starter and the mounting end surface of the recoil starter. In the vicinity of this, the above-mentioned mounting bracket is locked in shape.
A locking means for integrally holding is provided.

[0007] A recoil starter mounting structure according to the second aspect of the present invention comprises a seat for mounting a recoil starter formed on a side of a crankcase of an engine, and a recoil mount mounted on the seat. A mounting structure of a recoil starter configured to house or clamp a mounting bracket of another accessory such as a tank bracket between the mounting end surface of the starter and a projection crushable from the mounting end surface of the recoil starter. And a projecting portion is provided toward the seat surface, and a penetrated portion through which the projection penetrates is provided in the mounting bracket, and when the recoil starter is attached to the crankcase, a projection protruded from the penetrated portion. The mounting bracket is integrally fixed to the recoil starter by abutting the tip of the mounting surface on the seat surface and crushing the protruding portion by the screw tightening force of the mounting. To.

[0008]

According to the recoil starter mounting structure according to the first invention, when the recoil starter is screwed to the crankcase side of the engine with the mounting screw, the tank bracket is fixed to the recoil starter by the locking means. Due to the fact that the recoil starter and the tank bracket can be locked and held at the position, there is no need to position the recoil starter and the tank bracket. Also, since the recoil starter is integrated with the tank bracket when mounting screws are installed in the through holes for mounting the recoil starter, it is very easy to attach the recoil starter to the crankcase. become.

Further, according to the recoil starter mounting structure according to the second aspect of the present invention, when the recoil starter is screwed to the crankcase side of the engine with the mounting screw, the protrusion of the recoil starter is removed by the screw tightening force. The portion protruding from the metal fitting abuts (contacts) with the seat surface of the crankcase of the engine and crushes, acts like a rivet, and integrally fixes the metal fitting to the recoil starter side.

[0010] Therefore, when the recoil starter is later attached to and detached from the crankcase, the mounting bracket can be attached and detached integrally with the recoil starter, so that there is no trouble in attaching and detaching.

In addition, since the mounting bracket is integrally fixed to the recoil starter side, a process of mounting the recoil starter to the crankcase side is used, so that no labor for fixing is required.

In addition, at the time of overhaul, since the mounting bracket is integrated with the recoil starter, there is no need to be careful not to lose the mounting bracket.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall front view of a small engine according to an embodiment of the present invention, as viewed from the side where a recoil starter is attached.
2 is a partial cross-sectional view of the recoil starter mounting structure as viewed from the direction of the arrow II in FIG. 1, and FIG. 3 is a II-II diagram in FIG. 2 showing a recoil starter mounting surface formed on the crankcase side of the engine. FIG. 4 is a view taken in the direction of the arrow II, FIG. 4 is a view taken in the direction of the arrow III-III in FIG. 2 showing the configuration of the mounting end face of the recoil starter, and FIG.
FIG. 6 is a partially enlarged view of a main part of FIG. 5, and FIG.
FIG. 4 is a view taken in the direction of arrows IV-IV in FIG.

In FIGS. 1 and 2, 1 is a recoil starter, 2 is a crankcase of the engine E, 3 is an engine cover, 4 is a tank bracket, and 8 is a fuel tank.

As shown in FIG. 2, a seat surface 2a as shown in FIG. 3 is formed at a portion where the recoil starter 1 is mounted on the side of the crankcase 2 of the engine E. In the present embodiment, the seating surface 2a is configured to be present on the same plane having a predetermined height protruding from the periphery to the side opposite to the engine,
The shape of the seat surface 2a when viewed from the front (shape viewed from a direction perpendicular to the seat surface 2a) is as shown by dots in FIG. The recoil starter mounting in which a female screw is threaded on the inner peripheral surface at the center in the left-right direction of the wide-width edge and at the lower corners of the quadrilateral is a substantially quadrilateral having narrow edges. Screw hole 5 for
Are formed.

On the crankcase 2 side (engine body side) of the recoil starter 1, a quadrilateral edge which forms an end face 1A for attachment to the crankcase 2 is formed. As shown in FIG. 4, which is a view taken in the direction of arrows III-III, the seat has a basic shape corresponding to the shape of the seat surface 2a (see FIG. 3). A pressing portion 1a for holding the engine cover 3 (see FIGS. 1 and 2) is accommodated in an upper edge portion of the edge portion, and a tank bracket 4 is accommodated in the lower edge portion.
A play space 1b having an accommodating portion 1c to be pressed and substantially abutting on a seat surface 2a on the side of the crankcase 2 at the other portion of the edge portion (accurately, having a very small gap as shown in FIG. 2).
Having. Steps 15, 16 are formed at the boundary between the pressing portion 1a and the play portion 1b. The pressing part 1a and the housing part 1c are
In FIG. 4, it is represented by dots. 4 and 6, reference numeral 1d denotes a protruding portion that protrudes from the play portion 1b and is fitted to both side surfaces of the crankcase 2.

As shown in FIGS. 5 and 6, the recoil starter 1 is provided at the lower end edges on both sides in FIG.
A groove 9 having a rectangular cross section (a bottom surface of the groove 9 is indicated by a broken line in FIG. 5) is formed as a locking means for mounting the tank bracket 4 to the recoil starter 1.

On the other hand, the upper portion 4a of the tank bracket 4 is formed in a substantially gate shape as viewed from the front as shown by a two-dot chain line in FIGS. 3 and 4 and a solid line in FIG.

The upper part 4a of the tank bracket 4 is
As shown in FIG. 2, when the engine E is mounted at a predetermined position on the engine E body, the seating surface 2a of the crankcase 2
The lower portion 4b is bent downward by 90 degrees and is attached to the attachment portion 8a of the fuel tank 8 so as to be inserted into a gap 14 described later formed by the accommodating portion 1c of the recoil starter 1. I have.

As shown in FIG. 4, the mounting screw B (see FIG. 1) is inserted into the recoil starter 1 at a position corresponding to the screw hole 5 for mounting the crankcase 2 (see FIG. 1). Is formed.

As shown in FIG. 2, between the seating surface 2a of the crankcase 2 and the accommodating portion 1c of the recoil starter 1, there is provided a gap for inserting the tank bracket 4 (this embodiment). In the example, a gap 14 slightly smaller than the plate thickness of the tank bracket 4 is formed. In addition, a clearance for inserting the engine cover 3 is provided between the seating surface 2a of the crankcase 2 and the pressing portion 1a of the recoil starter 1 (in this embodiment, slightly smaller than the plate thickness of the engine cover 3). A narrow gap 10 is formed.

As shown in FIG. 2, the lower portion of the engine cover 3 is extended so as to be inserted into the gap 10 when the engine cover 3 is mounted at a predetermined position on the engine E body. Have been. As shown in FIG. 2, a mounting hole 7 for the mounting screw B is provided in a portion of the extended portion corresponding to the through hole 6 (see FIG. 4).
Are formed.

Thus, the present recoil starter mounting structure constructed as described above operates as follows.

That is, as shown in FIG. 3, the portion where the engine cover 3 is inserted is indicated by a two-dot chain line on the seat surface 2a of the crankcase 2 in FIG.

At this time, the mounting hole 7 of the engine cover is inserted into the screw hole 5 formed in the seating surface 2a of the crankcase 2.
Positioning is performed so as to match.

Then, as shown in FIG. 5, the tank bracket 4 is connected to the recoil starter 1 such that the upper part 4a of the tank bracket 4 is in contact with the step 15 in the groove 9 of the recoil starter 1. Press fit. In this state, as shown in FIG. 5, the through hole 6 of the recoil starter 1 and the mounting hole of the tank bracket 4 are provided.
The tank bracket 4 is integrally held by the recoil starter 1 in a state where 13 coincides with 13.

Then, as shown in FIG. 2, the recoil starter 1 holding the tank bracket 4 in a predetermined state is placed on the seating surface 2a of the crankcase 2 with the screw hole 5 and the through hole 6 aligned. Put on.

Next, in this state, as shown in FIG. 1 or FIG. 2, if the mounting screw B is inserted into the through hole 6 and screwed, the tank bracket 4 and the engine cover 3 will be attached to the recoil starter 1 And the seating surface 2a of the crankcase 2 are housed and clamped.

Therefore, in the event of a subsequent overhaul, the tank bracket 4 will be integrally detached if the recoil starter 1 is detached.

As described above, according to the recoil starter mounting structure according to the present embodiment, the tank bracket 4 which is a mounting bracket for the fuel tank 8 can be integrally held with the recoil starter 1, so that the recoil starter 1 can be held. 1 can be easily attached to the crankcase 2. Further, since the tank bracket 4 is integrally fixed to the recoil starter 1 by screwing the recoil starter 1 to the crankcase 2, the tank bracket 4 can be easily attached and detached during overhaul and be careful not to lose the tank bracket 4. No need to do. Further, the present invention can be implemented without increasing the number of parts, the number of processing steps, and the number of assembling steps.

In the above embodiment, the case where the engagement means of the recoil starter is a "groove having a rectangular cross section" is described. As shown in FIGS. 7 and 8, a crushable projection is provided at a central portion of the lower end of the recoil starter 1 at a position corresponding to the bottom portion (the innermost portion of the through groove) of the following through groove (through portion) 12. A plurality of (in this embodiment, two opposed to each other) project from the attachment end face, and the projection 11 is inserted into the center of the tank bracket 4 as shown in FIGS. May be formed by inserting (fitting) the projection 11 of the recoil starter 1 into the through-hole 12 of the tank bracket 4 in advance.

In the case of this embodiment, when the recoil starter 1 is attached to the crankcase 2 with the mounting screw B,
As shown in FIG. 8 by a two-dot chain line, the tip of the projection 11 of the mounting end face 1A of the recoil starter 1 comes into contact with the seating face 2a of the crankcase 2 and is crushed, as if crimping the tip of the rivet. The tank bracket 4 is integrally fixed to the mounting end face 1A of the recoil starter 1. Accordingly, the tank bracket 4 is always integrated with the recoil starter 1 in the subsequent attachment and detachment of the recoil starter 1 as in the above-described embodiment, so that the work becomes easy. In the present embodiment, the protrusion 11 may be integrally formed with the same resin as the recoil starter 1 at the time of molding. In this case, a gate (for example, a pin point gate) for molding the recoil starter 1 is used. ) Can also be used.

In each of the above embodiments, the tank bracket is used as an example of the mounting bracket, but it goes without saying that the present invention can be applied to other mounting brackets (including those similar to the mounting bracket).

[0035]

According to the recoil starter mounting structure according to the first and second inventions, a mounting bracket such as a tank bracket is integrally fixed to the recoil starter without increasing the number of processing steps or assembly steps. In addition, as a result, it is easy to attach and detach the fittings at the time of overhaul, and it is possible to reduce labor including positioning at the time of attaching and detaching, and the fittings are not lost. In addition, according to the recoil starter mounting structure according to the second invention, the recoil starter mounting structure can be implemented with almost no increase in manufacturing cost.

[Brief description of the drawings]

FIG. 1 is an overall front view of a small engine according to an embodiment of the present invention as viewed from a recoil starter mounting side.

FIG. 2 is a cross-sectional view taken along the line I- in FIG.
It is a partial sectional view from the direction of arrow I.

3 is a view taken in the direction of arrows II-II in FIG. 2, showing a seat surface for mounting a recoil starter formed on a side of a crankcase of the engine.

4 is a view taken in the direction of arrows III-III in FIG. 2 showing a configuration of a mounting end face of the recoil starter.

5 is a partially enlarged view of a main part of FIG. 4 showing a state in which a tank bracket is attached to a recoil starter.

6 is a view taken in the direction of arrows IV-IV in FIG. 5, showing a configuration of a screwed portion.

FIG. 7 is a partially enlarged view of a lower portion of a recoil starter showing a state where a tank bracket according to another embodiment is attached to a recoil starter.

FIG. 8 is a sectional view taken along line V- in FIG. 7 showing a configuration of a crushed portion and a screwed portion.
It is a V arrow view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Recoil starter 1A ... Attachment end surface 2 ... Crankcase 2a ... Seat surface 4 ... Tank bracket (attachment metal fittings) 9 ... Groove (locking means) 11 ... Protrusion 12 ... Through groove (through part) E ... Engine

Continuing from the front page (72) Inventor Yasuhiko Nozawa 1-1, Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries, Ltd. Inside the Akashi Plant (56) References Real Opening 2-43435 (JP, U) Real Opening Sho 58- 172017 (JP, U) Hikaru 1-173374 (JP, U) Jiko 58-47215 (JP, Y2)

Claims (2)

(57) [Scope of request for utility model registration] An engine according to claim 1, wherein a recoil starter is formed on a side of a crankcase of the engine for mounting a recoil starter, and a recoil starter is mounted on the seat.
A mounting structure of a recoil starter that is configured to accommodate or hold the attachment fittings of another appendage such as the tank bracket of the recoil starter, attachment end surface or in the vicinity thereof,
A recoil starter mounting structure, characterized in that a locking means is provided for locking and integrally holding the mounting hardware. 2. A method according to claim 1, wherein a recoil starter formed on a side of a crankcase of the engine for mounting a recoil starter and a mounting end surface of the recoil starter mounted on the seat surface.
A mounting structure of a recoil starter configured to house or clamp a mounting bracket of another accessory such as a tank bracket, wherein a crushable protrusion is protruded from the mounting end surface of the recoil starter toward the seat surface. In addition, a penetrated portion through which the projection penetrates is provided on the mounting bracket, and when the recoil starter is attached to the crankcase, the tip of the projection protruding from the penetrated portion abuts on the seat surface. A recoil starter mounting structure, wherein the mounting portion is integrally fixed to the recoil starter by crushing the protruding portion with a screw tightening force of the mounting.