JPS59162392A - Electric pump for pouring liquid - Google Patents

Abstract

PURPOSE:To heighten the effect of sealing, by laying lead wires through a seal washer, placing the washer on a lead wire insertion hole, filling a sealant on the washer, and fitting a seal cap. CONSTITUTION:Lead wires 15 extending from a power source of the like are guided downward through a seal washer 14 and the lead wire insertion hole 11 of a partition plate 10 and connected to a motor and a liquid level sensor. An adhesive sealant 16 is filled in a cylinder 12. A seal cap 17 made of an elastic material and fitted with the lead wires 15 is fitted in the cylinder 12. The effect of sealing is thus heightened.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an electric injection pump.

2. Description of the Related Art Conventional Structures and Problems Generally speaking, pumps for filling kerosene or the like from a tank to a kerosene stove or the like have recently been developed to use a battery as a power source and use a small pump to absorb and fill oil. In these electric liquid injection pumps, lead wires must be wired from the power supply to the motor of the pump part or to a part of the liquid level sensor through the liquid passage, and furthermore, the power supply part must be connected to the liquid passage. , and other attached mechanisms must be completely waterproof.

For this reason, waterproofing measures as shown in FIGS. 4 and 6 have conventionally been taken. In other words, 19 in the figure
shows a part of the liquid injection pump main body, the lower end 2o leads to a suction part equipped with a pump and a motor (both not shown),
The left end 21 leads to a pouring section equipped with a liquid level sensor (not shown), and the upper end 22 is equipped with a power supply section such as a dry battery and an electronic switch circuit section (both not shown). ing. The lower end 2o and the left end 21 communicate with each other and are connected to a motor, a liquid level sensor, etc. as appropriate. Here, a small hole 25 and a rubber stopper receiver 26 are formed in the part where the lead wire 24 is led out from the upper end portion 22, and the lead wire 24 is passed through the rubber stopper 2 and then through the small hole 25, and then the rubber stopper 27 is inserted. By adhering to the rubber plug receiver 26, the lead-out portion of the lead wire 24 was sealed.

However, in such a structure, the hole in the rubber plug 27 must be made small in order to improve the sealing performance between the lead wire 24 and the rubber plug 27, making it difficult to insert the lead wire 24. There was a drawback that if the wire 24 was strongly pulled or moved, the sealing performance deteriorated.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide an electric liquid injection pump that allows easy insertion of lead wires and has excellent sealing effects.

Structure of the Invention In order to achieve the above object, the present invention provides a partition wall at the lower part of an upper cylinder having at least a power supply section, and forms a lead wire insertion hole in the partition wall with a diameter sufficiently large to allow the lead wire to pass through. In addition, a receiver is provided surrounding the lead wire insertion hole, a seal washer through which the lead wire is passed is placed over the lead wire insertion hole, a sealing material is filled on top of the seal washer, and a seal cap through which the lead wire is passed is placed in the receiver. With this configuration, when wiring the lead wire, the lead wire insertion hole in the bulkhead located at a deep place is large, so the lead wire can be easily passed through. Even if the insertion hole is large, the sealing performance is not impaired, and when the seal cap is fitted into the receiver,
The pressure causes the sealing material to enter the gaps between the lead wires and the holes in each member, thereby enhancing the sole effect.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In the figure, reference numeral 1 denotes a pump main body, which includes a battery 3 built in an upper cylinder 2 to constitute a power supply section, and an electronic switch circuit section 4 built into the upper part of the pump main body 1. Further, the lower part of the pump body 1 is provided with a liquid suction pipe 6, and a liquid injection pipe 6 communicating with the liquid suction pipe 5 at the upper part thereof, and a pump part 7 and a motor 8 are provided at the tip of the liquid suction pipe 6. There is.

Further, a liquid level sensor 9 is provided at the tip of the liquid injection pipe 6.

A partition wall 10 is provided between the central portion of the pump body 1 and the liquid passage portions of the liquid suction pipe 6 and the liquid injection pipe 6, and the partition wall 10 has a relatively thick lead wire insertion hole 11 and a lead wire insertion hole 11. A receiver that surrounds the lead wire insertion hole 11! 12 are provided. A seal washer 14 having a lead wire insertion hole 13 is provided at the inner bottom of the receiving tube 12, and a lead wire 16 can be led out from the power supply section or the like through the seal washer 14 and the lead wire insertion holes 11, 1 of the partition wall 10.
3 and is connected to a motor 8 and a liquid level sensor 9. The receiving tube 12 is filled with an adhesive sealing material 16, and a seal cap 17 made of an elastic material and fitted onto the lead wire 15 is fitted into the receiving tube 12. Note that 18 in the figure is a switch of the power supply section.

Effects of the Invention As described above, the electric infusion pump of the present invention is configured as described above. It is easy to pass the wire through, and since a seal washer is provided, the sealing performance is not impaired even if the lead wire insertion hole is large. Moreover, since the seal washer and seal cap only need to be passed through the lead wire insertion hole and then the lead wire, fitting is easy, and when the seal cap is fitted into the receiver, the pressure This allows the sealing material to enter the gaps between the lead wires and the holes in each member, thereby enhancing the sealing effect.

[Brief Description of the Drawings] Fig. 1 is a sectional side view of an electric injection pump showing an embodiment of the present invention, Fig. 2 is a sectional side view of the same main part, Fig. 3 is a perspective view of the main part, Figure 4 is a cross-sectional side view of the main parts of a conventional electric injection pump;
The figure is a perspective view of the same main part. 1... Pump body, 2... Upper cylinder, 3
...Battery, 5...Liquid suction pipe, 6...Liquid injection pipe, End...Pump part, 8...Motor,
9... Liquid level sensor, 10... Bulkhead, 1
1... Lead wire insertion hole, 12... Receiving tube,
14... Seal washer, 16...'
) - G wire, 1e...Sealing material, 17...
seal cap. Name of agent: Patent attorney Toshio Nakao and 1 other person
2 Figure 3 Figure 4 Figure 22 Figure 5

Claims (1)

[Claims] At least an upper cylinder having a power supply part, a suction pipe and a liquid injection pipe connected to the lower part of the upper cylinder, and a series lead wire led out from the power supply part of the upper cylinder and wired to the pump part of the suction pipe, etc. , a partition wall is provided at the bottom of the upper cylinder, and
forming a lead wire insertion hole with a diameter large enough to allow the lead wire to be inserted through the partition wall, providing a receiver to surround the lead wire insertion hole, and placing a seal washer through which the lead wire is passed over the lead wire insertion hole; This electric liquid injection pump is characterized by having a seal cap filled with a sealing material and a lead wire passed through the seal cap fitted into the receiver.