JPS5922264Y2 - Generator engine accelerator device - Google Patents

Description

[Detailed description of the invention] This invention relates to an accelerator device for a generator-driven engine.The purpose of this invention is to make it possible to easily and accurately switch the frequency of the output current, and to reduce the size of the device with a simple structure. The main purpose is to enable

One of the means for switching the AC frequency in an engine generator is to change the engine rotation speed.

Conventionally, the frequency was changed by changing the receiving position of the high rotation stopper to increase or decrease the rocking angle of the accelerator lever.

However, although this allows the engine's operating speed (maximum speed) to be set accurately, the minimum speed varies depending on the governor difference, causing problems such as engine stalling and engine speed being too high, resulting in increased fuel consumption. was there.

In addition, the frequency was increased to 60 by increasing the rocking angle of the accelerator lever.
Since the frequency is set to Hz, it is necessary to configure the accelerator device in advance to a size commensurate with the amount of rocking.

This idea was proposed in view of the above, and while keeping the swing range of the accelerator lever and the tension of the governor spring constant at the lowest rotation, the swing radius of the attachment point of the governor spring on the accelerator lever side was set at 50°. The maximum rotational speed (operating rotational speed) of the engine can be changed between a stop specification and a 60Hz specification.

Examples of this invention will be described below based on the drawings.

FIG. 1 is a front view schematically showing an engine generator.

This engine generator is constructed by directly connecting an alternating current generator 2 to the side of a forced air-cooled electrodeposited engine 1, supporting the alternating current generator 2 on a protection frame 3 in a vibration-proof manner, and disposing a fuel tank 4 on the upper part.

A carburetor 5 and an accelerator device for controlling the carburetor 5 are disposed on the front outer surface of the engine 1.

The operation of the accelerator lever 6 is transmitted to a governor lever 8 via a governor spring 7, and then to a throttle lever 10 of the carburetor 5 via a rod 9 connected to its upper end.

The governor lever 8 is also operated by a governor device G in the crankcase, and the throttle lever 10 is operated to a position where the governor force and the tension of the governor spring 7 are balanced.

As shown in FIG. 2, the accelerator lever 6 is supported by a bolt 11 fixed to the crankcase so as to be able to swing up and down, and a friction spring 13 is sandwiched between the back plate surface of the accelerator lever 6 and the lever holder 12. The operating position is self-maintained by aligning the two lines with each other.

Then, an abutment wall 14H is attached to each of the arms projecting upward and downward.
14L and screwed into the lever holder 12 to form a high rotation stopper 15H and a low rotation stopper 15L.
Toniuke is trying to stop him.

The frequency of the alternating current output from generator 2 is 50Hz and 60Hz.
In order to switch between the two types of Hz and Hz, the spring attachment point 16 for the governor spring 7 of the accelerator lever 6 is set to
It is formed at two locations: 6L and 60Hz specification point 16H.

These two specification points 16L and 16H are centered on the spring attachment point 8a on the governor lever 8 side and the spring length of the governor spring 7 when the accelerator lever 6 is received by the low rotation stopper 15L (the state shown in Fig. 2). Each is set on a virtual arc whose radius is .

In addition, a 60-stop specification point 16H is provided near the free end of the arm, and the swing radius around the bolt 11 there is 50Hz specification point 16.
It is made to be larger than the swing radius at L.

Reference numeral 17 in the figure is an operation knob.

With the above configuration, the tension at the minimum rotation (idling rotation) remains constant regardless of whether the governor spring 7 is placed at the 50-stop specification point 16L or the 60-stop specification point 16H.

However, as shown in FIG. 3, when the accelerator lever 6 is received by the high rotation stopper 15H (during operating rotation), the swing radius of the 50 Hz specification point 16L and the 60 stop specification point 16H are different. , the amount of deflection of the governor spring 7 differs in each case, and its tension changes in magnitude.

Therefore, the swing radius of the 50-stop specification point 16L and the 60-stop specification point 16H is set to two types of engine rotation speeds corresponding to the generator 2 (for example, 3000 R, P).

By setting the amount to correspond to M and 3600 R, PoM), it is possible to accurately switch the frequency without changing the swing range of the accelerator lever 6.

FIG. 4 shows another embodiment, in which two swing center holes 18 are formed to fit bolts 11, and a swing center hole 19 is formed at two locations.
50Hz specification point 19L and 60Hz specification point 19H
It is designed to have separate locations.

In this case, the accelerator lever 6 is moved to each of the above-mentioned swing centers 18L.
- By changing the attachment point to 18H, the spring attachment point 16 can be switched to a 50Hz specification point 16L shown by a solid line and a 60Hz specification point 16H shown by an imaginary line.

In addition, both the above-mentioned swing centers 18L and 18H and the contact wall 14L
・For 14H, the accelerator lever 6 is the low rotation stopper 15
In a state where it is received by L, it is formed on and along an arc centered on the spring attachment point 8a of the governor lever 8, respectively.

In addition to the above embodiment, two spring attachment points 16 and two swing center holes 18 may be formed so that specifications can be changed by combining the two, and the high/low side rotation stopper 15H - One possibility is to attach the 15L to the accelerator lever 6.

As explained above, with this invention, the operating speed of the engine can be changed to 50Hz specification or 60Hz specification by changing the governor spring or changing the mounting position of the accelerator lever to change its center of rotation. In addition, the tension of the governor spring at the lowest rotation is constant in both specifications.
Not only can the alternating current frequency of the generator's output current be switched accurately with a simple operation, but it also eliminates variations in engine speed at the lowest speed, preventing engine stalling and wasteful fuel consumption. can.

In addition, although the specifications are changed as described above, the swing range of the accelerator lever is always constant, so
Compared to previous devices, the accelerator device can be made smaller, and the structure is simpler than those that have dedicated stoppers for each specification point.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; Fig. 1 is a schematic front view of the engine generator, Fig. 2 is a front view of the main part showing the accelerator device, Fig. 3 is an explanatory diagram of the operation, and Fig. 4 is a schematic front view of the engine generator. FIG. 2 is a front view of the main part corresponding to FIG. 2 showing the embodiment. 6... Accelerator lever 17... Governor spring, 8... Governor lever, 8a...
...Spring attachment point for 7, 15H...High rotation stopper, 15L...Low rotation stopper, 16
・・・・・・Spring attachment point, 16L/19L・・・・・・
50Hz specification point, 16H/19H...60Hz
Specification point, 19... Center of oscillation.

Claims (1)

[Scope of utility model registration request] The swinging range of the accelerator lever 6 is restricted by high/low surface rotation stoppers 15H and 15L, and either one of the swinging center 19 of the accelerator lever 6 and the spring attachment point 16 for the governor spring 7 is set to a 50 stop. Two locations are formed on the accelerator lever 6 as a specification point and a 60Hz specification point. -6 is set to either of the two modes listed above, the spring attachment point 16 is fixed to the governor lever 8 while the accelerator lever 6 is received by the low rotation stopper 15L.
An accelerator device for a generator engine, characterized in that it is configured to be located on a virtual arc centered on a side spring attachment point 8a.