JPS5811395Y2 - electric sprayer - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an electric sprayer in which a liquid tank is attached to the lower surface of the drive case.

Generally, in this type of sprayer, the chemical solution exchange port is formed with a relatively large diameter so that it is easy to inject the chemical into the liquid tank, so when the chemical is injected, the liquid may bounce off and scatter outside and adhere to the human body. Although an annular backing is attached to the chemical solution exchange port, when the liquid tank is shaken by a person carrying the liquid during use, the waves generated in the liquid cause droplets to hit the exchange port with force. There is also a high risk of leakage to the outside from the backing part.

Therefore, in this invention, a plurality of elastic tongues are integrally formed on the inner edge of the annular backing attached to the chemical exchange port of the liquid tank, surrounding the liquid suction pipe hanging from the drive unit case and sloping downward. By doing so, the splashing of the chemical liquid from the liquid tank and the leakage of the chemical liquid from between the lower surface of the drive unit case and the lower surface of the drive unit case are prevented.

An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing an example of an electric sprayer according to this invention. In the figure, 1 is a drive unit case, 2 is a liquid tank having a chemical solution exchange port 3, and 4 is a view from the bottom of the drive unit case 1. It is a vertically installed liquid suction pipe.

Reference numeral 5 denotes a connecting member rotatably supported on both sides of the drive unit case 1, and each end retaining portion 6 of this connecting member 5 is engaged with an engaging recess 7 formed in the liquid tank 2. As a result, this liquid tank 2 is fixed to the lower surface of the drive unit case 1.

8 is an output port to which a spray pipe (not shown) is connected.

As shown in FIG. 2, an annular backing 9 is fitted to the upper end of the chemical exchange port 3 of the liquid tank 2, and this backing 9 is connected to the lower surface of the drive unit case 1 and the liquid tank 2, so that both of the above-mentioned , 2 to maintain liquid tightness.

A plurality of downwardly inclined elastic tongues 10 are integrally formed on the inner edge of the backing 9, and these tongues 10 surround the liquid suction tube 4 around its axis (see Fig. 3).
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In this way, since the elastic tongue piece 10 is integrally formed on the annular backing 9 fitted to the upper end of the chemical solution exchange port 3,
When the chemical solution M is injected into the liquid tank 2, the tongue piece 10 that is in contact with the chemical solution M bends as shown in the dashed line in FIG. There is no risk of it flying off and attaching to the human body.

In addition, when the liquid tank 2 is rocked together with the drive unit case 1 during use, waves are generated in the chemical solution M in the tank 2, and even if the droplets Ma are scattered, the force of the droplets Ma is reduced by the elasticity of the tongue piece 10. is relaxed, and this force causes the elastic tongues 10 to bend upward, closing the gaps between the tongues 10. Therefore, the chemical solution M does not reach the lower surface of the drive unit case 1, and therefore the liquid M does not flow from this portion. Leakage can be effectively prevented.

In FIG. 2, the annular projection 1 formed on the outer peripheral surface of the annular backing 10 is for increasing the contact pressure with the inner surface of the annular wall 12 provided on the lower surface of the drive unit case 1.

In the above embodiment, the driving part case 1 and the liquid tank 2 are connected by the connecting member 5. Therefore, even if the two are connected by screwing means, the backing 9 can be used. Of course, similar effects can be achieved.

As described below, this invention has a simple structure in which a plurality of downwardly inclined elastic tongues are formed on the inner edge of an annular backing.
It is possible to reliably prevent scattering of the chemical solution in the liquid tank and leakage during use.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an example of an electric sprayer according to this invention, FIG. 2 is a sectional view of a main part of the same sprayer, and FIG. 3 is a perspective view showing an annular backing used in the sprayer. 1... Drive unit case, 2... Liquid tank, 3... Chemical solution exchange port, 4... Liquid suction pipe, 9...... Annular backing, 10... elastic tongue piece.

Claims (1)

[Scope of utility model registration request] In an electric sprayer in which a liquid tank 2 is removably attached to the lower surface of the drive unit case 1, the chemical solution exchange port 3 of the tank 2 is
A plurality of elastic tongues 10 are integrally attached to the inner edge of the annular backing 9 attached to the end of the upper drive unit case 1, and are inclined downward so as to surround the liquid suction pipe 4 that is vertically installed on the lower surface of the upper drive unit case 1. Formed electric sprayer.