JPS6327072Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a throttle wire support device for supporting a throttle wire for operating a throttle device of a carburetor in a portable engine such as a brush cutter.

Generally, in portable engines such as brush cutters, the throttle lever is located near the gripping part that grips the machine body, and the throttle wire that connects the throttle lever and the throttle device of the carburetor gets in the way of work. Therefore, it is necessary to fix a part of this throttle wire to the aircraft body and support it. Conventionally, for this purpose, the throttle wire was fixed to the engine fan case using a separate fixing bracket, but this bracket protruded and got in the way, especially when the bracket was made by bending a metal plate. There was a risk that someone's clothes could get caught and cause an unexpected accident.

In particular, in portable work equipment, the throttle control lever is installed on the work equipment side, and the throttle wire, together with the outer tube, is routed from the engine's carburetor around the outside of the fan case, which protrudes to the side. Connected to the throttle control lever. Conventionally, it was necessary to fix the outer tube of the throttle wire at multiple locations near the outside of the fan case with fixing metal fittings, and these fixing fittings were fixed by tightening the band that held the outer tube with screws. It was a pain to put on and take off because it was worn. The fan case needs to be disassembled for repair or adjustment, and removing the fixing metal fittings has become troublesome at that time.

The present invention provides a support part on the outside of the fan case with a cutout hole that penetrates and supports the throttle wire, and this support part is cast integrally with the fan case, and the throttle wire is inserted at the position of the support part. The outer tube that covers the throttle wire is divided and held, so there is no need to remove the throttle wire fixing fittings. The fan case can be disassembled by removing the wire from the notch hole, and since the support part is integrally cast with the fan case, it does not interfere with other objects and has a simple structure. It can be manufactured at low cost.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

1 to 4, 1 shows the engine of the brush cutter, 3 is a cylinder fixed to the crankcase 5, 7 is a carburetor, 9 is an air cleaner,
11 is a muffler, and 13 is a muffler cover.
15 is a recoil starter for starting the engine, 1
7 is a recoil starter handle, 19 is a spark plug, and 21 is a fuel tank. 23 is the engine case, crank case 5, fan case 25,
It consists of a clutch case 27. fan case 25
is fixed to the front part of the crankcase 5, has a built-in cooling fan (not shown), and guides cooling air to the outer periphery of the cylinder 3 through the cover 31. The clutch case 27 is fixed to the front part of the fan case 25, houses a centering clutch (not shown), and supports one end of the connecting rod 33. The other end of the connecting rod 33 is connected to a support (not shown) that supports a rotary blade (not shown), and a transmission shaft 35 passes through the inside. 37 is the throttle device 39 of the carburetor 7.
The two ends are connected by a throttle wire, and the other end is connected to a throttle operating lever (not shown). The fan case 25 consists of a fan case main body 41 provided integrally with the crank case 5, and a fan case lid part 43 that removably engages with the fan case 41. is cast integrally with the fan case body 41. Reference numeral 47 denotes a notched hole penetrating the support portion 45, through which the throttle wire 37 passes. A throttle device 39 is attached to one side of the support portion 45 so as to cover the outer periphery of the throttle wire 37 and connect one end to the throttle device 39.
the first outer tube 49 that engages the other end of the first outer tube 49 fixed to the
An engagement hole 53 is provided on the other side of the support portion 45, covering the outer periphery of the throttle wire 37.
A second engagement hole 55 that engages the other end of a flexible second outer tube 51 whose one end is fixed to the throttle operating lever.
is provided. Reference numeral 57 indicates a notch groove formed by cutting out the support portion 45.

In the embodiments described above, the rotary blade (not shown) supported at the tip of the connecting rod 33 rotates through the transmission shaft 35 due to the drive of the engine 1, and the operator is fixed to the connecting rod 33 or the connecting rod 33. The mowing work is carried out by grasping a grip part (not shown) provided on a handle (not shown).In order to adjust the rotation speed of the engine 1, a handle (not shown) provided near the grip part is used to When a throttle operating lever (not shown) is operated, a throttle device 39 is actuated via a throttle wire 37 to adjust the amount of fuel supplied within the carburetor 7.

Further, since the throttle wire 37 is supported compactly by the support portion 45, it does not make a large detour and does not interfere with the work.

In addition, FIG. 5 shows another embodiment, in which an adjustment screw cylinder 59 is screwed into the notch hole 47, and the adjustment screw cylinder 5 is screwed into the notch hole 47.
A second outer tube 51 is engaged with the other end of the tube 9 and fixed with a lock nut 61. By adjusting the adjustment screw cylinder 59, the throttle device 39
The opening/closing position of the door is adjusted.

Since the present invention has the configuration as described in the claims, it is easy to disassemble, repair, and adjust the fan case, and it also prevents workers from relying on the bracket and causing unexpected accidents. Moreover, it has a simple structure and can be manufactured at low cost.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of drawings]

1 and 2 are a side view and a front view of one embodiment of the present invention, FIGS. 3 and 4 are an enlarged side sectional view and an enlarged front sectional view of essential parts, respectively, and FIG. 5 is an enlarged front sectional view of an embodiment of the present invention. FIG. 3 is an enlarged side sectional view of main parts of the embodiment. Explanation of the symbols representing the main parts of the drawing, 1...
Engine, 7... Carburetor, 25... Fan case, 37... Throttle wire, 39... Throttle device, 45... Support part, 47... Notch hole,
49...first outer tube, 51...second outer tube, 53...
First engagement hole, 55... second engagement hole.

Claims (1)

[Scope of utility model registration request] A support portion 45 having a cutout hole 47 that penetrates and supports an intermediate position of a throttle wire 37 connecting a throttle device 39 of the carburetor 7 and a throttle operation lever is provided protruding from the side of the fan case 25 of the engine 1. , a first outer tube 4 is provided on one side of the support part 45, covering the outer periphery of the throttle wire 37 and having one end fixed to the throttle device 39.
A first engagement hole 53 for engaging the other end of the throttle wire 37 is provided on the other side of the support portion 45, and a flexible wire is provided on the other side of the support portion 45, covering the outer periphery of the throttle wire 37 and having one end fixed to the throttle operation lever. A second engagement hole 55 is provided to engage the other end of the second outer tube 51 of the support portion 45.
A throttle wire support device characterized in that it is provided by being cast integrally with the fan case 25.