JP2541856Y2 - Electric sprayer - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to an electric sprayer,
Particularly, the present invention relates to an electric sprayer provided with a suction / discharge liquid drive unit and a power supply unit above a liquid tank.

[0002]

2. Description of the Related Art Conventionally, an electric sprayer having a suction / drainage drive unit and a power supply unit provided above a liquid tank is disclosed in
One disclosed in Japanese Patent No. 4745 is known. In this electric sprayer, a suction / drainage drive unit including a pump and a motor and a power supply unit including a battery case and the like are provided on a flat bottom case. A liquid tank for storing the spray liquid is detachably mounted below the bottom case, while a box-shaped upper case having an open lower surface so as to cover the suction / discharge liquid drive unit and the power supply unit from above. Is attached to the bottom case by screwing. A round window for battery replacement is formed on the side surface of the upper case, and the round window is opened and closed by a battery lid.

[0003]

In such a conventional electric sprayer, however, both the suction / drainage drive unit and the power supply unit installed on the bottom case are covered together by the upper case without partitioning. At the time of battery replacement, the battery cover is opened and closed to insert and remove the battery. Therefore, if the battery is replaced in a spray area where there is a lot of dust, dust and the like enter the room formed by the bottom case and the upper case, and the dust and the like enter not only the power supply section but also the suction / drainage drive section. Therefore, there is a problem that the drive unit breaks down. Ordinarily, ordinary users often leave batteries installed even when they do not use the sprayer, and store the sprayer in a humid place such as a storeroom with the batteries installed for a long period of time. As a result, there is a problem that the battery leaks, and the liquid flows to the suction / drainage drive unit, and the drive unit breaks down. Drive failure is the most serious failure for electric sprayers,
The cost of the repair was high and in some cases it was impossible to repair.

The present invention has been made in view of such a conventional problem, and has as its object to provide an electric sprayer in which a suction / drainage drive unit does not break down due to dust or liquid leakage.

[0005]

In order to achieve the above object, according to the present invention, a suction / drainage drive unit and a power supply unit are installed on the upper surface of a flat lower inner, and the suction / drainage drive unit is provided above the lower inner. An upper inner that covers the drive unit and exposes the power supply unit is provided to separate the suction / drainage drive unit and the power supply unit. The lower inner surface is covered above the upper and lower inner covers to cover the power supply unit. A box-shaped cover was detachably attached, and a liquid tank was detachably attached below the upper and lower inner parts to form an electric sprayer.

[0006] In the electric sprayer having the above structure,
A concave portion having a through hole at the center is formed in the plate surface of the lower inner, and a liquid suction pipe connected to a pump of a liquid suction / drain drive unit is fitted and inserted into this concave portion, and the lower inner surface is continuous with the concave portion. To form a tubular connecting portion projecting toward the liquid tank side, and a liquid absorbing hose penetrating into the liquid in the liquid tank may be connected to the tubular connecting portion. Further, a plurality of legs may be provided on the lower surface of the lower inner.

[0007]

In the electric sprayer having the above structure, the suction / drainage drive section on the lower inner is covered by the upper inner and separated from the power supply section. Therefore, if dust enters,
Even if the battery leaks, the suction / drainage drive unit does not break down. The battery can be easily replaced by removing the cover and exposing only the power supply unit.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in the drawings. The case in the electric sprayer of the present embodiment is made of synthetic resin, and as shown in FIG.
And the upper inner 2 screwed to the lower inner 1
And a cover 3 detachably attached to the upper inner 2.
And a liquid tank 4 detachably attached to the cover 3 below the upper and lower inners 1 and 2.

FIGS. 2, 3, 4 and 5 are a plan view, a front view, a vertical sectional front view and a right side view of the lower inner 1, respectively. The lower inner 1 is formed in a substantially elliptical flat plate shape, and a step portion 6 is provided on the upper surface of the peripheral portion so that the peripheral wall 5 having a smaller diameter than the outer periphery is formed. In addition, a groove 7 is provided on the entire periphery of the lower surface, and a peripheral wall 8 which is flush with the peripheral wall 5 is formed.
Further, four legs 9 are provided on the lower surface of the lower inner 1.

On the other hand, on the upper surface of the lower inner 1, on one side (left side), there is provided a drive unit storage 10 for storing a suction / drainage drive unit (not shown) composed of a pump, a motor, and the like.
A power supply storage 11 for storing a power supply (not shown) made of a battery or the like is provided at the center. Power supply storage 11
Are formed independently by a rectangular peripheral wall 12, and the drive unit storage 10 and the power supply storage 11 are partitioned by the peripheral wall 12. In the center of the drive unit storage 10 in the lower inner 1, a concave portion 14 having a through hole 13 in the center is provided.
Are formed. A liquid suction pipe (not shown) connected to a pump of the liquid suction / drain drive unit is fitted and inserted into the recess 14. On the lower surface of the lower inner 1, a tubular connecting portion 15 is formed to protrude toward the liquid tank 4 continuously from the concave portion 14. A liquid-absorbing hose 16 (see FIG. 4) that penetrates into the liquid in the liquid tank 4 is connected to the tubular connecting portion 15.

Further, on the upper surface of the lower inner 1, a plurality of ribs 17 and a plurality of screw bosses 18 for screwing the upper inner 2 are formed. A semicircular notch 19 on which a drain pipe (not shown) of the pump is placed is formed in the rib 17 between the two screw bosses 18 near the drive unit storage 10. . A semicircular notch 20 is formed in the peripheral wall 5 of the lower inner 1 in the vicinity of the location where the notch 19 is provided. The notch 20 forms a circular hole in combination with a semicircular notch of the upper inner 2, which will be described later. To derive from Further, in the vicinity of the location where the notch 20 is provided, a nozzle support 21 for detachably supporting a spray nozzle (not shown) on the peripheral edge of the lower inner 1.
Are formed.

In FIGS. 2 to 4, reference numeral 22 denotes a battery receiving plate formed in the power supply housing 11;
Reference numeral denotes a battery terminal mounting portion provided on the peripheral wall 12 of the power supply storage 11. Reference numeral 24 denotes a valve mounting portion having a hole penetrating the plate surface of the lower inner 1. A check valve (not shown) is mounted to adjust the pressure in the liquid tank 4 and to allow the liquid to flow through the lower inner 1. To prevent the inflow to the side.

FIGS. 6, 7, 8, 9 and 10 are a plan view, a front view, a vertical sectional front view, a left side view and a bottom view of the upper inner 2, respectively. The upper inner 2 has a substantially elliptical shape corresponding to the lower inner 1 and is formed in a box shape with an open lower surface. The peripheral wall 25 of the upper inner 2 is formed so as to be flush with the peripheral wall 5 of the lower inner 1 when the upper inner 2 is screwed and attached to the lower inner 1. Further, a semicircular notch 26 is formed at a position corresponding to the notch 20 provided on the peripheral wall 5 of the lower inner 1 at a lower peripheral edge of the peripheral wall 25 of the upper inner 2.

On one side (left side) of the upper inner 2, the size of the suction / drainage drive unit is set so that the suction / drainage drive unit accommodated in the drive unit storage 10 of the lower inner 1 can be covered. A drive unit cover 27 having a corresponding shape is formed. on the other hand,
A rectangular cutout 28 having a size corresponding to the power supply housing 11 of the lower inner 1 is formed at the center of the upper inner 2 so that the power supply can be exposed. A peripheral wall 29 is formed on the lower surface (inner surface) of the upper inner 2 so as to surround the notch 28. This peripheral wall 29
Together with the peripheral wall 12 of the power supply housing 11 of the lower inner 1, the power supply housing 11 is separated from other parts. A plurality of ribs 30 and a plurality of screw bosses 31 that are paired with the screw bosses 18 of the lower inner 1 are formed on the lower surface of the upper inner 2. Furthermore, a plurality of guides 32 projecting below the lower end of the peripheral wall 25 are formed on the inner surface of the peripheral wall 25 of the upper inner 2. The guide 32 is a guide member when the upper inner 2 is attached to the lower inner 1, facilitates the attachment, and also functions as a rib of the peripheral wall 25 of the upper inner 2.

The peripheral wall 25 of the upper inner 2 on the side of the drive unit lid 27
An elastically deformable locking piece 33 is formed downward, and a locking projection 3 is formed on the outer surface of the lower end of the locking piece 33.
4 are provided. On the other hand, a resiliently deformable locking piece 35 is formed on the peripheral wall 25 of the upper inner 2 on the side opposite to the drive unit lid 27 so as to face upward.
A pawl 36 is formed at the upper end of the rim.

In FIGS. 6, 8, 9 and 10,
Reference numeral 37 denotes a switch hole provided on the upper surface of the drive unit cover 27, and is a hole for projecting the switch of the liquid suction and drain drive unit upward. Reference numeral 38 denotes a gear hole provided in the peripheral wall 25 on the drive unit lid 27 side, and the gear of the liquid suction and drain drive unit can be manually moved from outside.

FIGS. 11, 12, 13, 14 and 15
FIG. 3 shows a plan view, a front view, a vertical sectional front view, a left side view, and a right side view of the cover 3, respectively. The cover 3 is formed in a box shape with an open lower surface, and a grip portion 39 is formed on the upper surface thereof. The lower end of the peripheral wall 40 of the cover 3 is engaged with the step 6 of the lower inner 1, and the inner surface of the peripheral surface 40 is provided so as to contact the outer surfaces of the peripheral walls 5, 25 of the upper and lower inner 1, 2. At the lower end of the peripheral wall 40 of the cover 3, a notch 41 is formed at a position corresponding to the notches 20 and 26 provided on the peripheral walls 5 and 25 of the upper and lower inners 1 and 2.

The peripheral wall 4 on one side (left side) of the cover 3
0 has a locking hole 42 in which the locking projection 34 of the locking piece 33 of the upper inner 2 is fitted and locked. On the inner surface of the peripheral wall 40 on the other side (right side) of the cover 3, a locking groove 43 is formed in which the pawl 36 of the locking piece 35 of the upper inner 2 is fitted and locked.

In FIGS. 11 and 13, reference numeral 44 denotes a switch hole provided in the grip portion 39, which is a hole through which the switch of the suction / drainage drive unit is projected upward. Also,
Reference numerals 45 and 46 denote buckle engagement grooves provided on both sides of the upper portion of the peripheral wall 40 of the cover 3 for engaging a buckle (not shown) attached to the liquid tank 4 and attaching the liquid tank 4 to the cover 3. is there. Reference numeral 47 denotes a battery holding plate provided on the inner surface of the cover 3.

In order to assemble the electric sprayer having the above configuration, as shown in FIG. 1, a suction / drainage drive unit and a power supply unit are installed on the lower inner 1, and then the upper inner 2 is mounted on the lower inner 1. Place and screw. At this time, the suction / drainage drive unit is covered by the drive unit cover 27 of the upper inner 2, and is separated from the power supply unit by the peripheral wall 12 of the power supply storage 11 and the like. On the other hand, the power supply unit is in an exposed state. Next, the cover 3 is put on the upper and lower inners 1 and 2 and the upper inner 2 is concealed to cover the power supply unit. The cover 3 has a locking groove 4
After the pawl 36 of the locking piece 35 of the upper inner 2 is fitted and locked in the upper inner 3, the locking projection 34 of the locking piece 33 of the upper inner 2 is fitted and locked in the locking hole 42, and Attach to 2.
After that, the liquid tank 4 is attached to the cover 3 with a buckle.

To replace the battery, the locking projection 34 is pressed with a finger to elastically deform the locking piece 33, the engagement with the locking hole 42 of the cover 3 is released, and the cover 3 is held upward by holding the grip portion 39. This can be easily performed by removing the cover 3 and exposing only the power supply unit.

According to the electric sprayer of the present embodiment, the suction / drainage drive section on the lower inner 1 is covered by the upper inner 2 and is separated from the battery section, so that dust may enter the battery, or the battery may be discharged. Even if liquid leakage occurs, the suction / drainage drive unit does not break down. Further, since the concave portion 14 and the tubular connecting portion 15 are provided in the lower inner 1, the work of connecting the suction and discharge pipes of the pump of the suction and discharge liquid drive unit becomes easy. Furthermore, since the lower inner 1 is provided with the legs 9, there is no problem if the lower inner 1 is placed on the ground or the like when the spray liquid is injected.

[0023]

As described above, according to the electric sprayer of the present invention, the suction / drainage drive unit on the lower inner is covered by the upper inner and is separated from the battery unit. Therefore, even if dust enters or the battery leaks, the suction / drainage drive unit does not break down. The battery can be easily replaced by removing the cover and exposing only the power supply unit.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of an electric sprayer according to the present invention.

FIG. 2 is a plan view showing a lower inner member of the embodiment.

FIG. 3 is a front view showing a lower inner member of the embodiment.

FIG. 4 is a vertical sectional front view showing a lower inner member of the embodiment.

FIG. 5 is a right side view showing a lower inner member of the embodiment.

FIG. 6 is a plan view showing an upper inner member of the embodiment.

FIG. 7 is a front view showing the upper inner member of the embodiment.

FIG. 8 is a vertical sectional front view showing the upper inner member of the embodiment.

FIG. 9 is a left side view showing the upper inner member of the embodiment.

FIG. 10 is a bottom view showing the upper inner member of the embodiment.

FIG. 11 is a plan view showing the cover of the embodiment.

FIG. 12 is a front view showing the cover of the embodiment.

FIG. 13 is a vertical sectional front view showing the cover of the embodiment.

FIG. 14 is a left side view showing the cover of the embodiment.

FIG. 15 is a right side view showing the cover of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower inner 2 Upper inner 3 Cover 4 Liquid tank 9 Leg 10 Driving part storage 11 Power supply storage 13 Through hole 14 Depression 15 Tubular connection part 16 Liquid absorption hose 27 Driving part cover 28 Notch

Claims (3)

(57) [Scope of request for utility model registration] 1. A liquid suction / drainage drive unit and a power supply unit are provided on the upper surface of a flat lower inner, and an upper inner for covering the liquid suction / drainage drive unit and exposing the power supply unit is provided above the lower inner. The upper and lower inner parts are concealed above the upper and lower inner parts, and a box-shaped cover with an open lower surface that covers the power supply part is detachably attached to the upper and lower inner parts. An electric sprayer characterized in that a liquid tank is detachably mounted on the sprayer. 2. A recess having a through hole in the center of a plate surface of the lower inner, and a suction pipe connected to a pump of a suction / drainage drive unit is fitted and inserted into the recess, and a lower surface of the lower inner is inserted into the recess. 2. The electric motor according to claim 1, wherein a tubular connecting portion projecting to the liquid tank side is formed continuously with the concave portion, and a liquid absorbing hose penetrating into the liquid in the liquid tank is connected to the tubular connecting portion. Sprayer. 3. The electric sprayer according to claim 1, wherein a plurality of legs are provided on a lower surface of the lower inner.