JP2504558Y2 - Electricity spreader metering lever - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spreader driven by an electric motor, in which the rotation of the electric motor can be adjusted so that the spraying amount can be varied.
Pertain to.

[0002]

2. Description of the Related Art In FIGS. 7 to 11 showing a conventional technique, 1 is a storage tank mounted on a pedestal 2.
The lower end opening 4 of this storage tank 1 having a lid 3 on top
Is connected to the suction port 7 of the blower 6 that communicates with the dust discharge tube 5,
A drive shaft 9 for rotationally driving the impeller 8 of the blower 6 is driven by an electric motor 11 having a gear speed reducer 10 interposed, and the electric motor 11 uses a battery 12 as a power source.

A stirring blade 13 is attached to the upper end portion of the drive shaft 9 in the bottom opening 4 of the storage tank 1, and a shutter 15 for opening and closing a discharge hole 14 formed in the bottom portion of the storage tank 1 is metered. The discharge hole 14 is opened by sliding the lever 16, the spraying agent in the storage tank 1 is dropped into the blower 6, and the spraying agent is discharged from the discharge pipe 5 by the air flow generated by the blower 6. It is scattered.

At this time, in order to simultaneously start and stop the electric motor 11 for rotationally driving the blower 6 by sliding the metering lever 16 in the horizontal direction, a switch is attached to the shutter holding plate 17 to which the shutter 15 is attached. A limit switch 18 is attached to the movable contact 19 of the switch 18.
The actuator 20 to be opened and closed is provided in the metering lever 16, and the operator 20 opens and closes the movable contact 19 in accordance with the operation of the metering lever 16.

[0005]

In the conventional structure having the above-mentioned structure, there remain problems to be solved in the following points. That is, the switch 18 and the metering lever 16 are separated,
During long-term use, the clearance between the two increases due to wear and the like, and the operation of the switch 18 becomes uncertain,
It becomes necessary to frequently adjust the actuator 20 with respect to the movable contact 19. Since the switch 18 is in the open state, the spraying agent that drops from the opening 4 of the storage tank 1 into the blower 6 adheres to the contacts, causing corrosion and unstable operation, and a spraying agent that is particularly corrosive is used. In that case, the switch 18 must be replaced frequently. Since the switch 18 has only an ON / OFF function,
Even if it is desired to perform fine air spraying, the adjustment is impossible, and therefore the application is extremely limited, or it is necessary to adjust the use position and the length of the discharge tube 5, which is inconvenient to handle.

[0006]

SUMMARY OF THE INVENTION Here, the present invention relates to a fan, an electric motor, a blower driven by the electric motor, and a blower driven by the electric motor, and a shutter which changes an opening amount in association with a metering lever. In a metering lever of an electric spreader having a storage tank whose bottom opening faces the suction port, a metering knob (22) integrally formed at the end of the metering lever (21), , A resistance adjusting knob (23) adjacent to the adjusting knob (22) which is coaxially slidably rotatable, and a relative displacement between the adjusting knob (22) and the adjusting knob (23). The present invention proposes a metering lever of an electric spraying machine, which comprises a variable resistance part (36) for changing the amount of the spraying agent and is capable of controlling the amount of spraying agent and the amount of sprayed air.

[0007]

In the above-described structure of the present invention, the terminal as the resistance portion on the speed control dial and the variable resistor are electrically connected by the connection terminal on the end of the metering lever of the metering lever. Then the electric motor rotates and the blower is activated. By changing the rotation angle of the speed control dial, the resistance of the resistance portion is changed to change the rotation of the electric motor to increase or decrease the amount of sprayed air.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 21 in FIG. 1 denotes a metering lever, which is constructed integrally with the end of the metering lever -21 (this may be the same body or may be fixed by an appropriate means). Adjacent to the quantity control knob 22, the speed control knob 23 is provided on the quantity control lever-21.
Are fitted. The mode will be described with reference to FIG.

In FIG. 2, peripheral grooves 26 and 27 are formed in the outermost wales of the surfaces 24 and 25 where the adjusting knob 22 and the speed adjusting knob 23 are in contact with each other.
A seal ring 28 simultaneously fitted with 27 seals the space between the surfaces of the metering knob 22 and the speed controlling knob 23 that are in contact with each other.

As shown in FIG. 3, a connection terminal 29 is attached to the surface 24 of the speed control knob 22, and several pieces for a positioning mechanism described later are provided in a circumferential surface concentric with the speed control lever -21. The recess 30 is provided.

On the other hand, with respect to the speed control knob 23, an inner ring 32 having a central hole 31 into which the metering lever 21 is inserted and a spacer between the inner ring 32 and the speed control knob 23 in FIG. 33, the arcuate terminal 34 and the variable resistor 35 are disposed on the surface 25 outside the terminal 34, and these terminals 34 and the variable resistor 3 are disposed.
5, the connection terminal 29 is bridged, and the connection terminal 29, the terminal 34, and the variable resistor 35 form a variable resistance portion 36. From the surface 25,
A positioning pin 37 that selectively engages with the recess 30 is provided in a protruding manner, and the protruding state of the positioning pin 37 is elastically held by a spring 38 as shown in FIG.

When the speed control knob 23 is fitted into the metering lever 21, the key groove 3 formed in the center hole 31 is inserted.
9 is fitted to the key 40 provided on the metering lever-21,
The outer surface of the speed control knob 23 is sealed with a seal ring 41 while the surfaces of the speed control knob 23 and the surfaces 24 and 25 of the speed control knob 23 are in contact with each other, and the outer side of the seal ring 41 is pressed by a pressing plate 42. Hold it down and the metering lever-21 will
It is intended to prevent axial movement on 21.

In each of the above parts, the ends of the variable resistor 35 and the terminal 34 on the same side are connected to the electric motor and the battery via the conductors 43 and 44, respectively, and the speed adjusting knob 23 is connected to the adjusting knob 22. By the rotation, the position where the connection terminal 29 conducts the terminal 34 and the variable resistor 35 is changed, and the change of the resistance changes the rotation of the electric motor, and the amount of air blown by the blower also changes. Of.

That is, according to the present invention, the speed control knob 23 and the speed control knob 23 are adjusted along with the axial displacement.
The speed of the electric motor can be adjusted by the rotation of the motor. However, in order to confirm the change of the resistance value in the variable resistance portion 36, that is, the degree of speed control, the speed is adjusted as shown in FIG. An index 45 is attached to the quantity control knob 22, and a scale 46 is provided on the speed control knob 23, so that the speed control knob 2 can be adjusted.
It is desirable to make the relative displacement amount of 3 visible. With respect to the configuration of the variable resistance portion 36, the arrangement of the connection terminal 29, the terminal 34, and the variable resistance body 35 can be reversed from that of the above-described embodiment, and the variable resistance portion 36 can be used.
It is also possible to use a transistor or the like.

[0015]

According to the metering lever having the above construction of the present invention, the following practical effects can be obtained. That is, 1) Since the resistance value of the variable resistance portion is changed by the turning operation of the speed control lever and the rotation of the blower can be adjusted via the electric motor, it is possible to arbitrarily obtain from a weak wind to a strong wind, and the object to be sprayed. You can do the spraying work according to your needs. 2) Since the variable resistance portion is formed on the surface where the adjusting knob and the adjusting knob that rotates coaxially therewith are in contact with each other, the operability is good and the durability is excellent.

[Brief description of drawings]

FIG. 1 is an external perspective view of a metering lever according to the present invention.

FIG. 2 is an end view of the portion shown in FIG.

FIG. 3 is an end view of a metering knob.

FIG. 4 is an end view of a speed control knob.

5 is another cross-sectional view of the portion shown in FIG.

FIG. 6 is an enlarged sectional view of a positioning pin portion.

FIG. 7 is a sectional view showing the configuration of an electric spreader.

FIG. 8 is a plan view of a part of FIG.

9 is a front view of a part of the portion shown in FIG.

FIG. 10 is a side view of the portion shown in FIG.

11 is an enlarged perspective view of a part of FIG.

[Explanation of symbols]

 21 Adjusting lever 22 Adjusting knob 23 Adjusting knob 36 Variable resistance part

Claims (1)

(57) [Scope of utility model registration request] 1. A bottom opening is exposed to a suction port of the blower through a battery, an electric motor, a blower driven by the electric motor, and a shutter whose opening amount changes in association with a metering lever. In a metering lever of an electric spreader equipped with a storage tank, a metering knob (22) integrally formed at the end of the metering lever (21) and this metering knob (2
2) Adjacent to 2) and coaxially slidable and rotatable, a speed control knob (2
3), the adjusting knob (22) and the speed adjusting knob (23)
Variable resistance part (36) that changes resistance by relative displacement between
This is a metering lever for an electric sprayer that enables to control the amount of spraying agent and the amount of spraying air.