JP6183899B2 - High pressure water injection device - Google Patents

Description

  The present invention relates to a high-pressure water injection device.

  Conventionally, as a high-pressure water injection device that ejects high-pressure water to remove dirt, etc., an elongated tube body, a proximal grip part attached to the proximal end of the elongated tube body, and an intermediate attached to the middle of the elongated tube body A high-pressure water injection device that feeds high-pressure water from a flexible tube to an injection gun having a grip portion is used (see, for example, Patent Document 1). That is, the spray gun is connected to the high pressure water generator through the flexible tube. The high-pressure water generator has a pump for generating high-pressure water and a motor for driving the pump.

  However, when the injection of water from the injection gun is stopped by operating the lever provided on the proximal grip, the motor and pump remain driven, and the water flowing out of the pump passes through the circulation circuit (circulation operation piping). Since it was configured so as to circulate, there was a disadvantage that the motor was always rotating and a wasteful electricity bill was required. In addition, there is a disadvantage that the temperature of the water rises and a probability that the motor, the pump and the valves break down due to the circulation operation.

JP 2008-49270 A

  The problem to be solved is that it costs a waste of electricity. Moreover, the temperature of water rises. In addition, the probability of failure of the motor, pump, and valves due to the circulation operation is increased.

Therefore, a high-pressure water injection apparatus according to the present invention includes a pump, a high-pressure water generator having a motor that drives the pump, an injection gun, and a flexible tube body that connects the high-pressure water generator and the injection gun in communication. The high pressure water from the pump is injected from the injection gun through the flexible tube, and the injection gun is attached to the elongated tube and the proximal end of the elongated tube. A transmission unit for wirelessly transmitting a signal for turning on / off the motor in a high-pressure water spraying device having a proximal grip portion and an intermediate grip portion provided in the middle of the elongated tubular body. Built in the intermediate grip part, attached to the high-pressure water generator is a receiving unit that receives the signal and turns the motor on and off , and a switch of the transmission unit is provided at the bottom of the intermediate grip part , further The intermediate grip portion has a waterproof cover, in which the water in the intermediate grip portion is configured to prevent intrusion.

  According to the high pressure water injection device of the present invention, since the motor is rotated as necessary, it is possible to prevent unnecessary electricity charges. Moreover, it can prevent that the temperature of water rises. Furthermore, by the circulation operation, cavitation is likely to occur as the water temperature rises, and failure due to vibration due to cavitation is prevented, thereby extending the life of the motor, pump, piping, and the like.

It is a figure which shows one Embodiment of this invention. It is a block diagram. It is a section front view of an intermediate grip part It is a principal part enlarged front view. It is a front view of an intermediate grip part. It is a cross-sectional front view which shows a sealing material.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
1 and 2 show an embodiment of the present invention. This high-pressure water injection apparatus includes a high-pressure water generator J having a pump P and a motor M that drives the pump P, an injection gun G, and high-pressure water. And a flexible tube H that communicates and connects the generator J and the injection gun G, and is configured to inject high-pressure water from the pump P from the injection gun G through the flexible tube H. The spray gun G has an elongated tube body (lance) 1, a proximal grip portion 2 attached to the proximal end of the elongated tube body 1, and an intermediate grip portion 3 attached in the middle of the elongated tube body 1. . Car wash, snow removal, and removal of dirt can be performed by the high-pressure water sprayed from the spray gun G. That is, the spray gun G can be used as a cleaning gun, a snow removal gun, a chisel gun, or the like. The high-pressure water generator J has a box-shaped casing C.

  As shown in FIG. 3, a transmission unit S that transmits a signal for turning on and off the motor M (see FIGS. 1 and 2) is built in the intermediate grip portion 3. A receiving unit R that receives the signal and turns the motor M ON / OFF is attached to the high-pressure water generator J. The receiving unit R may be attached either inside or outside the casing C of the high pressure water generator J. The receiving unit R is waterproof.

  An intermediate grip 3 is detachably attached to the elongated tube 1. Specifically, the intermediate grip portion 3 includes a grip portion 4 and a block body 5. The male screw portion 6 is fixed to the grip portion 4. The block body 5 has a hole 7 through which the elongated tube body 1 is inserted. The block body 5 has a female screw portion 8 that opens to the hole portion 7. The elongated tube body 1 is inserted into the hole 7, the male screw portion 6 is screwed into the female screw portion 8, and the intermediate grip portion 3 is fixedly attached to the elongated tube body 1. A switch N of the transmission unit S is provided at the bottom of the intermediate grip 3. B shows a button battery. E indicates a communication board.

  As shown in FIGS. 3 and 4, the intermediate grip portion 3 has a rubber waterproof cover 9 and is configured to prevent water from entering the intermediate grip portion 3. The waterproof cover 9 includes an upper opening cover body 10, an upper lid 11, and a lower lid 12. A generally closed annular waterproof upper projection 14 is provided on the lower surface 13 of the upper lid portion 11, and an entirely closed annular waterproof lower projection 16 is provided on the upper surface 15 of the lower lid portion 12. The upper protrusion 14 and the lower protrusion 16 are provided in a non-opposing manner. The cover main body 10 has an inner flange 18 in the opening 17. The inner protrusion 18 is sandwiched between the upper protrusion 14 and the lower protrusion 16 for waterproofing. As shown in FIGS. 3, 4, and 6, an annular sealing material 19 is disposed between the upper lid portion 11 and the lower lid portion 12. The seal material 19 includes an annular metal 20 and an annular elastic rubber portion 21 that is integral with the inner periphery of the metal 20. Then, as shown in FIGS. 3 and 4, the sealing material 19 in the free state shown in FIG. 6 receives an elastic compressive force in the assembled state so that the inner peripheral surface portion 22 of the elastic rubber portion 21 is the male screw portion 6. The sealing performance is further improved.

  Next, the operation of the switch N will be described. When the switch N (see FIG. 3) is pressed in the direction of arrow A in FIG. 5 from the outside of the bottom of the intermediate grip 3 through the waterproof cover 9, the waterproof cover 9 is recessed as shown by a two-dot chain line in FIG. It can be deformed and switched on and off.

  In the present invention, “water” includes hot water. “High-pressure water” includes high-pressure hot water.

  The design of the present invention can be changed, and for example, the upper protrusion 14 and the lower protrusion 16 may be provided to face each other. Further, in order to allow the intermediate grip portion 3 to be freely attached to a plurality of different (for example, three types) outer diameter elongated tube bodies 1, a plurality of block bodies 5 having hole portions 7 having inner diameters corresponding to the respective outer diameters are provided. It is also preferable to be provided interchangeably. In addition, the base grip portion 2 is provided with a lever that allows water to be sprayed or stopped, and a circulation circuit that connects the discharge portion and the suction portion of the pump P is provided to provide a relief valve, thereby providing a transmission unit S. If the injection of water from the tip of the elongated tube body 1 is stopped without transmitting a signal for turning off the motor M, the water discharged from the pump may be circulated through the circulation circuit.

  As described above, the present invention is a flexible tubular body that connects the high pressure water generator J having the pump P and the motor M that drives the pump P, the injection gun G, and the high pressure water generator J and the injection gun G in communication. H, and configured to inject high-pressure water from the pump P from the injection gun G through the flexible tube H. The injection gun G includes the elongated tube 1 and the proximal end of the elongated tube 1. Transmitting unit for transmitting a signal for turning on / off the motor M in a high-pressure water jetting apparatus having a base end grip portion 2 attached to the intermediate tube portion and an intermediate grip portion 3 attached to the middle of the elongated tube body 1 Since S is built in the intermediate grip part 3 and a receiving unit R for receiving a signal and turning on / off the motor M is attached to the high-pressure water generator J, the motor M is rotated as necessary to avoid waste. Electricity costs can be prevented, and the motor , It extends the life of the pump P, and the like. Further, it is possible to prevent the temperature of water from rising by stopping the motor M.

Further, since the intermediate grip portion 3 is detachably attached to the elongated tube body 1, the intermediate grip portion 3 of the existing high-pressure water injection device is replaced, and the receiving unit R is attached to the high-pressure water generator J for easy Can be manufactured.
Further, since the switch N of the transmission unit S is provided at the bottom of the intermediate grip portion 3, (if provided on the side surface portion of the intermediate grip portion 3, there is a possibility that the switch N may malfunction if it is held firmly and performs an injection operation. )) It is possible to prevent the switch N from being turned ON / OFF by mistake.
Further, since the intermediate grip portion 3 has the waterproof cover 9 and is configured to prevent water from entering the intermediate grip portion 3, the transmission unit S disposed in the intermediate grip portion 3 is damaged. This can be prevented.

1 Long tube (Lance)
2 Base end grip 3 Intermediate grip 9 Waterproof cover G Spray gun H Flexible tube J High pressure water generator M Motor N Switch P Pump R Receiving unit S Transmitting unit

Claims (1)

A high pressure water generator (J) having a pump (P) and a motor (M) for driving the pump (P), a spray gun (G), the high pressure water generator (J), and the spray gun (G) A flexible tubular body (H) that communicates with each other, and is configured to inject high-pressure water from the pump (P) from the spray gun (G) through the flexible tubular body (H). The spray gun (G) is located between the elongated tube (1), the proximal grip (2) attached to the proximal end of the elongated tube (1), and the elongated tube (1). In the high-pressure water injection device having the attached intermediate grip (3),
A transmission unit (S) for wirelessly transmitting a signal for turning on / off the motor (M) is incorporated in the intermediate grip (3), and the signal is received to turn on / off the motor (M). A receiving unit (R) is attached to the high pressure water generator (J) ,
And the switch (N) of the transmission unit (S) is provided at the bottom of the intermediate grip portion (3),
Furthermore, the high pressure water jetting apparatus is characterized in that the intermediate grip portion (3) has a waterproof cover (9) and prevents water from entering the intermediate grip portion (3) .

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