JPH0220449Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a drain tank device for a vaporizer that discharges fuel from a float chamber.

[Prior Art] Internal combustion engines installed in portable working machines used seasonally, such as brush cutters and pest control machines, are prone to evaporation and deterioration of fuel when it is stored in a vaporizer when not in use. It becomes tarry, and the fuel metering nozzle and fuel passage of the carburetor are closed, making it impossible to ensure good operation the next time it is used. Therefore, the carburetor of the internal combustion engine of the seasonal work machine is provided with a drain tank for discharging the fuel at the lowest part of the float chamber.

For example, in the drain tank device for a carburetor disclosed in Japanese Utility Model Application Publication No. 58-162257, the fuel outlet opens when the valve body provided at the bottom of the float chamber is pushed up with a lever against the force of a spring. The lever is supported by a protective wall to prevent it from rotating against an obstacle.

[Problems to be solved by the invention] In the above-mentioned vaporizer drain tank device,
There are problems such as the valve body must be installed from the inside of the float chamber, and each part is separate and it takes time to assemble.

An object of the present invention is to provide a drain stock device for a vaporizer in which each component is integrated and can be easily assembled from outside the float chamber.

[Means for Solving the Problem] In order to achieve the above object, the configuration of the present invention includes an elastic valve body at one end of a lever molded from a synthetic resin, and an elastic valve body at the other end that is pressed toward the fuel discharge port. A bracket having a shaft hole in the center is provided, and a cutout extending from the shaft hole to the edge of the bracket is narrower than the diameter of the shaft hole, so that the engaging portion of the spring can be connected to the fuel drain at the lowest outer wall of the float chamber. The shaft hole of the bracket is configured to be engageable with the shaft installed adjacent to the outlet through the notch.

[Function] According to the present invention, the valve body 10 for closing the fuel discharge port 9 is provided at one end of the lever 7, and the valve body 10 is provided at the other end.
An engagement portion of a spring 11 is provided which presses the fuel outlet 9 toward the fuel outlet 9. If the notch 18a of the bracket 17 provided at the center of the handle lever 7 is pressed against the support shaft 8 installed on the lowest outer wall of the float chamber 2, the notch 18
a is elastically expanded and the support shaft 8 is inserted into the shaft hole 18.
As a result, the tip lever 7 can be easily assembled to the outer wall of the float chamber 2.

[Embodiment of the invention] As shown in FIGS. 1 and 2, a float chamber 2 is connected to the bottom of the carburetor body 1 with bolts 3, and the float chamber 2
A fuel inlet pipe 4, which receives fuel from a fuel tank (not shown), is connected by bolts 5. The drain tank device 6 according to the present invention is assembled inside a box-shaped protective wall 12 formed protruding from the lowest outer wall of the float chamber 2, preferably the side wall.

As shown in FIG. 3, a fuel discharge port 9 is provided in a portion adjacent to the bottom wall of the side wall 2a of the float chamber 2, and a vertical support shaft 8 is fixed to a box-shaped protective wall 12 surrounding the fuel discharge port 9. . The inner surface of the lever 7, which is rotatably supported by the support shaft 8, has a fuel discharge port 9 at one end.
A spring engaging portion 1 whose other end engages an end of a spring 11 interposed between the valve body 10 and the side wall 2a.
6 is provided.

As shown in FIG.
A pair of brackets 17 are integrally molded from synthetic resin at the center of the inner surface of the lever 7 in order to support it. The bracket 17 is provided with a shaft hole 18 into which the support shaft 8 is fitted, and a notch 18a extending from the shaft hole 18 to the edge of the bracket 17 that is narrower than the diameter of the shaft hole.

In order to assemble the lock lever 7 to the support shaft 8 connected between the upper and lower walls of the protective wall 12, the spring 11 is housed inside the protective wall 12, and then the lock lever 7 is inserted into the inside of the protective wall 12. At the same time, if the notch 18a of the bracket 17 is strongly pressed against the support shaft 8, the notch 18a will be elastically expanded and the shaft hole 18 will fit into the support shaft 8, thereby allowing the lever 7 to be rotatably supported. It will be supported by the shaft 8.
The lever 7 is urged to rotate clockwise in FIG. 3 about the support shaft 8 by the force of the spring 11, and the valve body 10 is pressed against the valve seat 9a formed at the edge of the fuel discharge port 9, and the fuel is discharged. Exit 9 is closed.

When discharging the fuel from the float chamber 2, the anti-slip unevenness 7a on the surface of the tip lever 7 is removed from the protective wall 12.
If you push it inside, the lever 7 will release the spring 11.
As the valve body 10 is rotated counterclockwise against the force and separated from the valve seat 9a, the fuel in the float chamber 2 flows out from the fuel outlet 9 into the protective wall 12, and the The fuel is discharged to the outside from the fuel drop groove 13.

According to the configuration of the present invention, the tip lever is placed on the side wall of the float chamber, so compared to the case where it is placed on the bottom wall, the tip lever can be operated while observing the fuel discharge state more closely. will not adhere to the hands of workers.

Furthermore, even when the engine is placed on the ground, the lever does not operate inadvertently due to obstacles on the ground.

Since the Kotsu Clever is placed inside the protective wall, there is no risk of damage even if the Kotsu Clever collides with an obstacle.

[Effects of the invention] As described above, the present invention has an elastic valve body at one end of the lever molded from a synthetic resin, and a spring engaging part that presses the elastic valve body toward the fuel discharge port at the other end. A bracket with a shaft hole is provided in each part,
A notch narrower than the diameter of the shaft hole extending from the shaft hole to the edge of the bracket is provided, and the shaft hole of the bracket is engaged through the notch with a shaft installed adjacent to the fuel discharge port on the lowest outer wall of the float chamber. It has a small number of parts, such as a valve body provided on the tip lever, which saves on parts machining, and parts can be easily assembled from outside the float chamber. That is,
When engaging the shaft hole of the bracket of the Kotsu Clever with the support shaft fixed to the outer wall of the float chamber, the Kotsu Clever is assembled by simply pressing the notch strongly against the support shaft, reducing assembly costs.

[Brief explanation of drawings]

Fig. 1 is a side view of a drain stock device for a vaporizer according to the present invention, Fig. 2 is a front view thereof, Fig. 3 is a plan sectional view taken along the line - in Fig. 2, and Fig. 4 is an exploded perspective view of the drain stock device. It is. 2: Float chamber, 7: Kotsclever, 8: Support shaft,
9: Fuel discharge port, 10: Valve body, 11: Spring, 1
6: Spring engaging portion, 17: Bracket, 18: Shaft hole, 18a: Notch.

Claims (1)

[Scope of utility model registration request] An elastic valve body is provided at one end of the lever molded from synthetic resin, a spring engaging portion for pressing the elastic valve body toward the fuel discharge port is provided at the other end, and a bracket having a shaft hole is provided in the center. Provide a notch narrower than the diameter of the shaft hole extending from the hole to the edge of the bracket,
A drain stock device for a carburetor, characterized in that a shaft hole of a bracket can be engaged with a shaft hole of a bracket through the notch, which is installed adjacent to a fuel discharge port on the lowest outer wall of a float chamber.