WO2020125257A1

WO2020125257A1 - Pressure washer

Info

Publication number: WO2020125257A1
Application number: PCT/CN2019/116189
Authority: WO
Inventors: 焦石平; 乔勇
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2018-12-17
Filing date: 2019-11-07
Publication date: 2020-06-25

Abstract

Disclosed is a pressure washer, comprising a main engine (12), which comprises a pump (17) and a motive force input mechanism connected to the pump (17) for receiving motive force; a water outlet structure, through which the pressure washer ejects a pressurized water stream outward; a DC motive force unit (14), which comprises a first motor (142) adapted to couple to the motive force input mechanism and a battery pack for providing DC drive power to the first motor (142); and an AC motive force unit (16), which comprises a second motor (162) adapted to couple to the motive force input mechanism, and a power cable for connecting the second motor (162) to an AC power source. The motive force input mechanism is selectively coupled to the first motor (142) or the second motor (162) such that the pump (17) is driven by the DC motive force unit or the AC motive force unit. The DC motive force unit (14) and the AC motive force unit (16) are configured independent of each other to allow the use of the corresponding DC motive force unit or AC motive force unit under different working conditions, which improves the portability of the pressure washer, and at the same time achieves a balance between the working time of the pressure washer and the weight and cleaning efficiency of the pressure washer under different working conditions.

Description

Pressure washer

This application claims the priority of the Chinese patent application with the application date of December 17, 2018, the application number of 201811542559.1 and the application number of 201822119704.7, the entire contents of which are incorporated by reference in this application.

Technical field

The invention relates to the field of cleaning equipment, in particular to a pressure cleaning machine.

Background technique

In family life and outdoor activities, cleaning needs have been widespread. In the family life centered on the family courtyard, people often need to clean balconies, walkways, outdoor tables and chairs, barbecue grills, cars, bicycles, garages, pets, garden tools, windows, swimming pools, outdoor steps, etc. These objects are inevitably stained with mud, oil, leaves, dust and other stains because the use scene is located outside the house. Cleaning with a rag is extremely inconvenient.

The appearance of the pressure washer has brought great convenience to people's lives. It can be used to clean such as balconies, cars, doors, windows, courtyard roads, etc., which is both efficient and convenient. At present, the pressure washer is divided into an AC pressure washer that can only be connected to an alternating current, a DC pressure washer that can only be connected to a direct current, and an AC washer.

For DC pressure washer, it has a large range of use, but limited battery capacity cannot guarantee a long battery life; for AC pressure washer, it can guarantee a long battery life, but the working range is limited. Although the AC/DC cleaning machine in the existing design can meet the long battery life and expand the working range, the weight is too large and the portability is poor, which affects the cleaning efficiency.

Summary of the invention

Based on this, it is necessary to provide a pressure washer with good portability and cleaning efficiency in view of the problems of poor portability and poor cleaning efficiency of the existing designs of AC and DC pressure washer.

According to an aspect of the invention, a pressure washer is provided, including:

The main machine includes a pump for transferring water outward and a power connection mechanism connected to the pump to receive power;

Water outlet structure, the pressure washer jets a pressure water flow outward through the water outlet structure;

A DC power unit, including a first motor that can be connected to the power connection mechanism, and a battery pack for providing DC drive power for the first motor; and

The AC power unit includes a second motor that can be connected to the power access mechanism, and a power cord for connecting an AC power source to the second motor;

The power connection mechanism is selectively connected with the first motor or the second motor, so that the pump is driven by the DC power unit or the AC power unit.

In an embodiment, at least part of at least one of the DC power unit and the AC power unit can be detachably connected to the host.

In one embodiment, the DC power unit is relatively fixedly connected to the host.

In an embodiment, the first motor and the battery pack are fixedly connected to the host relatively and independently of each other; or

The first motor is relatively fixedly connected to the host, and the battery pack is relatively fixedly connected to the first motor.

In an embodiment, a part of the DC power unit can be detachably connected to the host.

In an embodiment, the first motor is relatively fixedly connected to the host, and the battery pack can be detachably connected to the host or the first motor; or

The first motor can be detachably connected to the host, and the battery pack is relatively fixedly connected to the host.

In an embodiment, the DC power unit can be completely detachably connected to the host.

In an embodiment, the first motor and the battery pack can be detachably connected to the host independently of each other; or

The DC power unit includes a main casing, the first motor is supported in the main casing, and the battery pack can be detachably or fixedly installed with the main casing;

The main casing can be detachably installed with the host, and when the main casing is installed on the host, the pump can be driven by the first motor.

In an embodiment, the AC power unit is relatively fixedly connected to the host.

In an embodiment, the second motor and the power cord are independently and relatively fixedly connected to the host; or

The second motor is relatively fixedly connected to the host, and the power cord is relatively fixedly connected to the second motor.

In an embodiment, the AC power unit can be completely detachably connected to the host.

In an embodiment, the second motor and the power cord can be detachably connected to the host independently of each other; or

The second motor can be detachably connected to the host, and the power cord can be detachably or relatively fixedly connected to the second motor.

In an embodiment, a part of the AC power unit can be detachably connected to the host.

In an embodiment, the second motor can be detachably connected to the host, and the power cord is relatively fixedly connected to the host; or

The second motor is relatively fixedly connected to the host, and the power cord can be detachably connected to the host or the second motor.

In an embodiment, the DC power unit and the AC power unit are relatively fixedly connected to the host.

In an embodiment, the first motor is relatively fixedly connected to the host, and the battery pack is relatively fixedly connected to the host or the first motor;

The second motor is relatively fixedly connected to the host, and the power cord is relatively fixedly connected to the host or the second motor.

In one embodiment, the pressure washer has a DC power mode and an AC power mode;

The pressure washer further includes a mode switching mechanism for operably controlling the pressure washer to be driven by the DC power unit in the DC power mode or in the AC power mode Driven by the AC power unit.

In one embodiment, the pressure washer includes a DC conduction circuit formed by the battery pack and the first motor that can be selectively switched on and off, and an AC power source that is selectively switched by the second motor Alternating current conduction circuit;

The mode switching mechanism is used to operably control the on-off of the DC electric conduction circuit, operably control the on-off of the AC electric conduction circuit, and operably control the power connection mechanism and the first One motor or second motor is connected.

In one embodiment, the power connection mechanism includes a DC power terminal for mating with the first motor, and an AC power input terminal for mating with the second motor.

In an embodiment, the mode switching mechanism includes a clutch;

The clutch member can move between the first clutch position and the second clutch position;

When the clutch member is located at the first clutch position, the clutch member can be connected to the DC power input end to input power;

When the clutch member is in the second clutch position, the clutch member can be connected to the AC power input end to input power.

In an embodiment, the clutch member further includes a third clutch position between the first clutch position and the second clutch position during movement;

When the clutch member is located at the third clutch position, the clutch member is disconnected from both the DC power input end and the AC power input end.

In an embodiment, the power connection mechanism includes a power input shaft connected to the pump;

The clutch member is movably disposed on the power input shaft along the axis direction of the power input shaft, and the clutch member is drivingly connected to the power input shaft;

The DC power input end and the AC power input end are respectively provided on the power input shaft, and are located on both sides of the clutch member along the axis direction of the power input shaft.

In one embodiment, the pressure washer includes a DC control switch that controls the on-off of the DC conduction circuit formed by the battery pack and the first motor, and controls the AC conduction formed by the AC power supply and the second motor AC control switch with open and closed circuit;

The mode switching mechanism is used to operably control the on and off of the DC control switch and the AC control switch;

When the pressure washer is in the DC power mode, the DC control switch is turned on, the DC electric conduction circuit is closed, the clutch can be connected to the pump and the DC power input end, and the pressure washer Driven by the DC power unit;

When the pressure washer is in the AC power mode, the AC control switch is turned on, the AC electric conduction circuit is closed, the clutch can be connected to the pump and the AC power input end, the pressure washer The AC power unit is driven.

In an embodiment, the mode switching mechanism includes an operating member operatively connected to the host, and a linkage mechanism connected between the operating member and the clutch member;

The operating member controls the on-off of the DC control switch or the AC control switch through the linkage mechanism and the clutch member moves between the first clutch position and the second clutch position to select the pressure washer by the The DC power unit drives or is driven by the AC power unit.

In an embodiment, the operating member is pivotally connected to the host;

The DC control switch is located on a rotation path of the operation member rotating in a first direction, and the AC control switch is located on a rotation path of the operation member rotating in a second direction opposite to the first direction;

When the operating member rotates in the first direction, the clutch member can be connected to the DC power input terminal and the DC control switch can be turned on;

When the operating member rotates in the second direction, the clutch member can be connected to the AC power input terminal and the AC control switch can be turned on.

In an embodiment, when the operating member rotates in the first direction, the coupling of the clutch member and the DC power input terminal is turned on before or in synchronization with the DC control switch;

When the operating member rotates in the second direction, the clutch member is connected to the AC power input terminal before or synchronously the AC control switch is turned on.

In an embodiment, the mode switching mechanism includes a power switching shaft connected to the pump body and movable in a preset direction;

The DC power input end and the AC power input end are respectively provided on the power switching shaft;

The power switching shaft can move between a first moving position and a second moving position along a preset direction;

When the power switching shaft is located at the first moving position during the movement, the DC power input terminal can be mated with the first motor to input power;

When the power switching shaft is located at the second moving position during the movement, the AC power input end may be mated with the second motor to input power.

When the power switching shaft is located at the first moving position during the moving process, the battery pack and the first motor are coupled to a DC electric conduction circuit controlled by the DC control switch to turn on and off;

When the power switching shaft is located at the second moving position during the moving process, the AC power supply and the second motor are coupled to an AC electric conduction circuit controlled by the AC control switch to turn on and off.

In an embodiment, the power connection mechanism includes a universal power input that can be mated with the first motor and the second motor; the first motor and the second motor can be selected Removably connected to the host;

When the first motor or the second motor is installed on the host, the first motor or the second motor is mated with the universal input terminal to input power.

In one embodiment, the pressure washer further includes a quick release mechanism for locking the first motor or the second motor to the host.

The mode switching mechanism further includes an identification element for identifying the first motor and the second motor connected to the host;

The pressure washer couples the first motor and the battery pack to a DC electric conduction circuit controlled by the DC control switch according to the identification result of the identification element; or couples the second motor to an AC power source The AC electric conduction circuit controlled by the AC control switch.

In an embodiment, the first motor and the second motor are provided with different triggers;

When the first motor or the second motor is installed in the host, the identification component may identify different triggers, and output a signal characterizing the identification result.

In one embodiment, the identification component includes an interface connection module, the interface connection module includes a first terminal for adapting to the first motor, and an adaptor for adapting to the second motor Second terminal

When the first motor is connected to the universal power input terminal, the first motor and the battery pack are coupled to the DC electric conduction circuit controlled by the DC control switch through the first terminal; when the second The motor is connected to the universal power input terminal, and the second motor and the AC power source are coupled to an AC electric conduction circuit controlled by the AC control switch through a second terminal.

In an embodiment, the interface connection module is disposed on the host.

In an embodiment, the pressure washer further includes a support member for assisting the movement of the pressure washer; the second motor is installed on the support member;

The host can be detachably installed with the support member, and when the host is installed on the support member, the pump can be selectively driven by the DC power unit or the AC power unit.

In an embodiment, the number of the battery pack is configured as one or more.

In an embodiment, the rated voltage of the battery pack is 12-120V.

In an embodiment, the pump includes a pump body, a plunger provided in the pump body, and a reciprocating drive mechanism connected between the plunger and the power access mechanism. The reciprocating drive mechanism will Rotation output is converted into plunger movement;

The first motor or the second motor may drive the reciprocating drive mechanism through the power connection mechanism to drive the plunger to reciprocate in the pump body.

In an embodiment, the first motor and the second motor are high-speed motors; the rotation speed of the first motor and the second motor is greater than 10000 rpm;

The power connection mechanism includes a speed reduction mechanism.

In an embodiment, the pressure washer further includes a cleaning accessory connected to the pump, so that when the cleaning accessory is installed on the host, pressure water flow can be sprayed outward through the cleaning accessory.

Applying the pressure washer in the above embodiment, a DC power unit and an AC power unit that are independent of each other can be configured, and corresponding DC/AC power units can be used under different working conditions, thereby improving the portability of the pressure washer while Under different working conditions, the balance between the working time of the pressure washer, the weight of the pressure washer and the cleaning efficiency is satisfied.

According to another aspect of the present invention, a pressure washer is provided, including:

The host includes a pump for outwardly transferring water flow, a power connection mechanism connected to the pump to receive power, and a battery pack mounting portion for connecting a battery pack that provides energy to the pump;

DC power unit, including a first motor that can be mated with the power connection mechanism; and

In an embodiment, the DC power unit further includes a battery pack for providing DC driving power for the first motor.

In an embodiment, the first motor and the battery pack are fixedly connected to the host relatively and independently of each other.

In an embodiment, the first motor is relatively fixedly connected to the host, and the battery pack can be detachably connected to the host; or

In an embodiment, the first motor and the battery pack can be detachably connected to the host independently of each other.

In an embodiment, the first motor is relatively fixedly connected to the host, and the battery pack is relatively fixedly connected to the host;

In an embodiment, the mode switching mechanism includes a clutch;

In an embodiment, the operating member is pivotally connected to the host;

When the first motor or the second motor is installed in the host, the first motor or the second motor is connected to the universal input terminal to input power.

In an embodiment, the interface connection module is disposed on the host.

In an embodiment, the number of the battery pack is configured as one or more.

In an embodiment, the rated voltage of the battery pack is 12-120V.

The power connection mechanism includes a speed reduction mechanism.

BRIEF DESCRIPTION

1 is a schematic structural diagram of a pressure washer in an embodiment of the invention;

2 is a schematic structural diagram of a pressure washer in another embodiment of the present invention;

3 is a schematic structural diagram of a pressure washer in still another embodiment of the present invention;

4 is a schematic diagram of the connection relationship between the operating unit and the clutch of the pressure washer shown in FIG. 3;

5 is a schematic diagram of another mode switching mechanism of the pressure washer in the DC power mode according to an embodiment of the present invention;

6 is a schematic diagram of another mode switching mechanism of the pressure washer shown in FIG. 5 in an AC power mode;

7 is a schematic structural diagram of a pressure washer in still another embodiment of the present invention;

8 is a schematic structural diagram of a pressure washer in still another embodiment of the present invention.

detailed description

In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to related drawings. The drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terminology used in the description of the present invention herein is for the purpose of describing specific embodiments, and is not intended to limit the present invention. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Further, when an element is referred to as being "under" another element, it can be directly below, or one or more intervening elements may also be present. It can also be understood that when an element is referred to as being “between” two elements, it can be the only one between the two elements, or one or more intervening elements may also be present.

In the case of using "including", "having", and "including" described herein, unless clearly defined terms such as "only", "consisting of", etc. are used, otherwise Add another part. Unless mentioned to the contrary, singular terms may include plural forms and cannot be construed as one.

It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present invention, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element.

It should also be understood that, when explaining an element, although not explicitly described, the element is interpreted as including an error range, which should be within an acceptable deviation range for a specific value determined by those skilled in the art. For example, "about", "approximately", or "substantially" may mean within one or more standard deviations, and is not limited herein.

In addition, the drawings are not drawn in the ratio of 1:1, and the relative sizes of the elements are drawn only by way of example in the drawings, not necessarily in real scale.

The conventional pressure washer usually has a main machine and a spray head connected to the main machine. The main unit is provided with a water tank, a motor and a pump, and the spray gun is provided with a trigger trigger switch for spraying water. These pressure washers are large in size and heavy in weight, and it is troublesome to carry them when switching between various work scenarios. For example, on a home cleaning day, if you need to wash windows, driveways, steps, cars one by one, you have to move the pressure washer back and forth between different locations. In addition, it is necessary to add water to the water tank before using the pressure washer, and the operation is not simple enough.

For the convenience of handling and ease of use, there is another pressure washer on the market, which is mainly connected to the external water source through one end of the garden hose and the pressure washer at the other end. The external water source may be a pond, tap water, or provided through a container similar to a water tank or barrel.

Considering that the working scenarios of the pressure washer are usually household cleaning and outdoor cleaning, in order to meet the needs of portability and ease of use, the pressure washer needs to balance the weight of the whole machine, the cleaning range, the working water pressure and water flow, and the continuous cleaning time. The relationship between. At present, for the power supply mode, the pressure washer can be divided into three modes: DC pressure washer, AC pressure washer, and AC-DC pressure washer.

For example, for a DC pressure washer, the DC drive power supply is a battery pack. Because the battery pack is not restricted by external power sources, the DC pressure washer has a wider range of use and is suitable for more usage scenarios. It is easy to understand that the greater the water outlet pressure and water flow, the greater the weight of the functional components such as pumps and motors. Therefore, in order to ensure a better battery life, the greater the weight of the battery pack. In other words, the light weight of the battery pack will shorten the working time of the washing machine and reduce the cleaning ability. At the same time, working time and cleaning efficiency also restrict each other. The same battery pack, the longer the working time, the weaker the cleaning ability; conversely, the stronger the cleaning ability, the shorter the working time.

For another example, for an AC pressure washer, which is limited by the supply of AC drive power, the use scenario must be equipped with a corresponding AC power supply, which reduces the convenience of users in outdoor scene applications. The AC pressure washer is also limited by the length of the power cord connected to the AC power supply, and its cleaning range can only be within the length of the power cord, which limits the cleaning scope and mobility of the pressure washer.

As another example, for an AC/DC pressure washer, the driving part that drives the pump is an AC/DC motor. The AC/DC pressure washer is provided with a power interface that is selectively connected to a DC drive power source (battery pack) and an AC drive power source. When either the DC drive power supply or the AC drive power supply is matched with the power supply interface, the drive parts can be operated. In this way, the DC drive power supply can be used to work normally without the AC drive power supply, or the AC drive power supply can be used to work normally without the DC drive power supply, thereby expanding the application of the high-pressure cleaner The range brings great convenience to users.

However, in the existing design, the AC and DC motors need two sets of brushes and windings matching the corresponding brushes for the drive parts to be driven by DC and AC drive power. Connect with DC drive power and AC drive power. Specifically, the DC driving power supply can transmit the DC power to the first brush through the power interface, and the first brush can then send the DC power to the first winding through a commutator and other devices, thereby driving the first winding to work, and finally driving the pump body jobs. The AC drive power supply can transmit the AC power to the second brush through the power interface, and the second brush can then transfer the AC power to the second winding through a commutator and other devices, thereby driving the second winding to work, and finally driving the pump body to work. However, this type of AC and DC motors are large in size and heavy in quality, which does not meet the requirements of convenience in handling and convenience in use.

Therefore, it is necessary to provide a pressure washer that combines both portability and cleaning efficiency.

In an embodiment of the present invention, the pressure washer includes a DC power unit and an AC power unit. The pressure washer is equipped with a DC power unit and an AC power unit that are independent of each other. The corresponding DC/AC power unit can be used under different working conditions, thereby improving the portability of the pressure washer and under different working conditions. It meets the balance between the working time of the pressure washer, the weight of the pressure washer and the cleaning efficiency.

The pressure washer of the present invention will be described below with reference to the drawings.

1-8, the pressure washer 10 of the present invention includes a host 12, a water outlet structure (not shown), a DC power unit 14 and an AC power unit 16.

The host 12 includes a tool housing 122 and a functional component disposed in the tool housing 122. The functional component includes a pump 17 for transmitting water flow outward. The host also includes a power connection connected to the pump 17 to receive power Enter the institution (the picture is not marked).

The pump 17 sprays the pressure water flow outward through the water outlet structure. In some embodiments, the water outlet structure includes a cleaning accessory. The cleaning accessory is integrally formed or detachably connected to the host 12 so that the pump 17 sends a pressure water flow to the cleaning accessory. In other embodiments, the water outlet structure may be a water outlet provided on the tool housing 122, which is not limited herein.

The pressure washer 10 may be a seat-type pressure washer 10 or a hand-held pressure washer 10. For example, when the pressure washer 10 is hand-held, the tool housing 122 is substantially pistol-shaped, and the tool housing 122 has a handle for holding, a main body portion disposed at an angle to the handle, and a water outlet portion for spouting water supply. The functional element is arranged in the main body part, and the water outlet part is the aforementioned water outlet structure. Further, the pressure washer further includes a cleaning accessory detachably installed on the water outlet. In this case, the cleaning accessory may also be a water outlet structure. Further, in the handheld pressure washer 10, the tool housing 122 may adopt a left and right Haval structure, which is formed by connecting a first half shell and a second half shell.

It should be noted that, in some embodiments, the pressure washer 10 is hand-held, and the cleaning accessory can be optionally installed. However, when the pressure washer 10 is a seat-type pressure washer, due to the design requirements of the outlet pressure and the outlet flow rate, a cleaning accessory must be provided. Specifically, in the embodiment, when the pressure washer 10 is a seat-type washer, the cleaning accessory may be a spray gun or a spray bar.

In some embodiments, the pressure washer 10 includes two or more cleaning accessories. The two or more cleaning accessories can be optionally installed on the host 12, of course, more than two cleaning accessories can also be Also installed on the host 12 at the same time. For example, the cleaning accessory includes a high-pressure accessory and a low-pressure accessory that are selectively installed on the host 12. When the high-pressure accessory or the low-pressure accessory is installed on the host 12, the pressure washer 10 outputs a corresponding pressure water flow. Specifically, the high-pressure attachment corresponds to a long nozzle structure, and the low-pressure attachment corresponds to a short nozzle structure. The high-pressure attachment has a longer length than the low-pressure attachment. Preferably, when the high-voltage accessory is connected to the host 12, the DC power unit 14 or the AC power unit 16 can rotate and output at high speed, thereby driving the pump 17 to output high-pressure water flow; correspondingly, when the low-voltage accessory is connected to the host 12, the DC power The unit 14 or the AC power unit 16 can rotate and output at a low speed, so that the pump 17 outputs a low-pressure water flow outward.

It can be understood that two or more cleaning accessories may be connected to one interface or more than two interfaces on the host 12 according to actual conditions. In some embodiments, the host has only one interface, and the high-voltage accessory and the low-voltage accessory can be selectively connected to the interface; in other embodiments, the host has two interfaces, and the high-voltage accessory and the low-voltage accessory can be connected to the corresponding interfaces, respectively .

For portability requirements, in some embodiments, the pressure washer 10 itself may not have a water storage tank, but is connected to a water pipe (not shown) through a water inlet provided in the tool housing 122. The water pipe (not shown) (Shown) and then connected to an external water source, which can be a pond, tap water or provided by a container device similar to a water tank or barrel.

The DC power unit 14 includes a first motor 142 mateable with a power connection mechanism, and a battery pack mounting portion for connecting to the battery pack 144 to provide DC power to the first motor 142. The AC power unit 16 includes a second motor 162 mateable with a power connection mechanism, and a power cord for connecting to the second motor 162 to connect an AC power source. Specifically, the first motor 142 is a DC motor, and the second motor 162 is an AC motor. The power connection mechanism can be optionally coupled with the first motor 142 or the second motor 162 so that the pump 17 is driven by the DC power unit 14 or the AC power unit 16. It is realized that the pressure washer can be selectively driven by the DC power unit 12 or the AC power unit 14.

In this way, the independent DC power unit 14 and AC power unit 16 are configured, and the corresponding DC/AC power unit can be used under different working conditions, thereby improving the portability of the pressure washer and under different working conditions. Meet the balance between the working time of the pressure washer, the weight of the pressure washer and the cleaning efficiency

It should be noted that the mating means that when the first motor 142 or the second motor 162 is installed on the host 12, the output shaft of the first motor 142 and/or the output shaft of the second motor 162 can be connected to the power connection mechanism The transmission connection transmits the power output by the first motor 142 or the second motor 162 to the pump 17 so that the pump 17 can be driven by the DC power unit 14 or the AC power unit 16.

It can be understood that the first motor 142 and the battery pack 144 may be provided separately or integrally. For example, in some embodiments, the battery pack 144 and the first motor 142 may be separately installed on the host. In other embodiments, the battery pack 144 may also be installed on the first motor 142. For example, the first motor 142 and the battery pack 144 are assembled to form a power module.

Specifically, the DC power unit further includes a main casing (not shown), the first motor 142 is supported in the main casing, and the battery pack 144 can be detachably or fixedly installed with the main casing. The main casing can be detachably installed with the tool casing 122 of the host machine 12. When the main casing is installed on the tool casing 122, the pump 17 can be driven by the first motor 142. The body formed by the first motor 142 and the battery pack 144 can be adapted to the tool body of at least two power tools. When the AC power unit 16 drives the pressure washer, the whole formed by the first motor 142 and the battery pack 144 can be The tool body of the other power tool of at least two power tools provides power. In other words, when the DC power unit 14 is installed in any one of at least two tool bodies, a complete electric tool is formed to perform the work performed by the electric tool of this type,

In this way, since the motor and the battery pack are provided as independent individuals, the independent individuals can be used by tool bodies of different power tools, which improves the utilization rate of the DC power unit 14 and thereby improves the user's input-output ratio.

It is easy to understand that the first motor 142 and the battery pack 144 may be fixedly connected to the host 12 or detachably connected to the host 12. For example, in some of the foregoing embodiments, the first motor 142 and the battery pack 144 may be fixedly connected to the host respectively. In other embodiments, the first motor 142 and the battery pack 144 may be detachably connected to the host respectively. In still other embodiments, the battery The bag 144 may also be fixedly or detachably connected to the first motor 142.

As a preferred embodiment, considering the weight, and for ease of installation, replacement, and use, the battery pack 144 is configured to be detachably connected to the host. When the battery pack 144 is installed in the host or the first motor 142, it can form an electrical circuit with the first motor 142, thereby providing DC driving power for the first motor 142.

Specifically, the battery pack 144 is detachably mounted on the tool housing 122. The tool case 122 is provided with the aforementioned battery pack mounting portion, and the battery pack 144 is detachably connected to the battery pack mounting portion. Specifically, the battery pack mounting portion may be a mounting groove, a receiving cavity for accommodating the battery pack 144, or other connection structure that can install the battery pack 144 on the tool housing 122. Specifically in some embodiments, the battery pack mounting portion may also be provided with a terminal block for electrically connecting with the battery pack 144, the terminal block and the tool housing 122 may be integrally formed, or may be detachably connected; the terminal block includes a butt joint The base on the surface and a number of connection terminals held in the base. When the battery pack 144 is installed at the battery pack mounting portion, the battery pack 144 can be mated with the mating surface and electrically connected to the corresponding connection terminal.

Of course, the detachable form of the battery pack 144 and the tool housing 122 may also be other, which is not limited herein, for example, the tool housing 122 has a docking space into which the battery pack 144 is inserted, and the bottom of the docking space may be provided with a battery The connection terminal of the package 144 butt. In short, the reliability, sealing, and waterproofing of the battery pack 144 and the tool housing 122 need to be considered for the design.

In this way, whether the battery needs to be installed on the host 12 can be selected according to actual operating conditions, thereby improving portability and operability. For example, in the pressure washer 10 suitable for different working conditions, the rated voltage and rated current of the battery pack 144 and the number of battery packs 144 can be configured according to requirements, thereby providing sufficient working energy and being lightweight. Specifically, the weight of the functional component and the weight of the battery pack 144 may have a proportional relationship. As the weight of the functional component decreases, the weight of the battery pack 144 may be reduced.

The weight of the battery pack 144 is determined by the number of battery packs 144 and the configuration of the battery pack 144. Specifically, in an embodiment, the rated voltage of the battery pack 144 may be between 12V and 120V, for example, 20V, 40V, 24V, 56V, 80V and 120V. For example, when the rated voltage of the battery pack 144 is 18V and the rated capacity is 2 Ah, the weight of the battery pack 144 is 360 g.

In the specific embodiment, a small voltage, such as 12V, is mainly used when the cleaning area is small, and the cleanliness is required, such as a bucket, etc.; a medium voltage, such as 80V, is mainly used to clean cars, outdoor furniture (tables, chairs), etc. ; Higher voltage, such as 120V, is mainly used for cleaning large areas that require longer cleaning time, such as roads, walls, and balconies that have not been cleaned for a long time.

It can be understood that the number of battery packs 144 may be one or more, which is not limited herein, so the voltage of the battery pack 144 may be the rated voltage of a single battery pack 144 or a combination of multiple battery packs 144. For example, in some embodiments, the voltage of the battery pack 144 is 80V, that is, four battery packs 144 with a rated voltage of 20V are combined.

It can be understood that the battery pack 144 may be a lithium battery that can be detachably connected. Of course, the battery pack 144 may also be a nickel-metal hydride battery, a nickel-cadmium battery, or a graphene battery, which is not limited herein.

It can be understood that, in other embodiments, the battery pack 144 may also be disposed in the tool housing 122 or the housing of the first motor, and the configuration is a non-removable connection, which is not limited herein.

The AC power unit 16 includes a second motor 162 mateable with a power connection mechanism, and a power cord for connecting to the second motor 162 to connect an AC power source. The second motor 162 and the power cord may be provided separately, or may be connected as a whole. For example, in some embodiments, the power cord and the second motor 162 may be separately installed on the host. In other embodiments, the power cord may also be installed on the second motor 162, which is not limited herein.

It is easy to understand that the installation method of the power cord and the second motor 162 may be a fixed connection or a detachable connection. For example, in some of the foregoing embodiments, the second motor 162 and the power cord may be fixedly connected to the host respectively. In other embodiments, the second motor 162 may also be detachably connected to the host. In still other embodiments, the power cord It can also be fixedly or detachably connected to the second motor 162.

Since the second motor 162 is heavy in weight, as a preferred embodiment, the weight is considered, and in order to facilitate installation, replacement, and use, the second motor 162 may be configured to be detachably connected to the host.

In order to better balance the working time, weight and cleaning efficiency of the pressure washer, in some embodiments of the present invention, at least part of at least one of the DC power unit 14 and the AC power unit 16 can be detachably connected to the host.

For example, for users who often perform simple household cleaning and need to clean the room once a year or half a year, the AC power unit 16 is relatively heavy, and avoids the inconvenience caused by missing parts. The unit 14 is configured to be at least partially fixedly connected to the host relative to the host, and the AC power unit 16 is configured to be detachably connected to the host. In consideration of the mobile portability of the pressure washer 10 and the removable charging of the battery pack 144, as a further preferred embodiment, the battery pack 144 can be detachably attached to the host or the first motor 142. The power cord can be fixedly or detachably installed on the host or the second motor 162 according to specific conditions.

When the user needs home cleaning, the battery pack 144 is installed on the host, and then the DC power unit 14 is connected to the power access mechanism, and then the pump is driven to work for cleaning. When cleaning the house or courtyard, for example, the entire AC power unit 16 (the power cord is installed on the second motor 162), or the second motor 162 (the second motor 162 and the power cord are provided separately) can be detachably installed on the host . At this time, the power connection mechanism can be driven by the AC power unit 16 to achieve long-term, high-power cleaning to meet the diversified needs of users.

In this way, the corresponding DC/AC power unit can be used under different working conditions, thereby improving the portability of the pressure washer, and at the same time, satisfying the working time of the pressure washer, the weight of the pressure washer and the pressure washer under different working conditions. The balance between cleaning efficiency.

In addition, the DC power unit 14 and the AC power unit 16 can also be relatively fixedly connected to the host 12.

It can be understood that the connection method of the first motor 142 and the battery pack 144, and the second motor 162 and the power cord to the host may be determined according to different needs, and it is not listed here and not limited.

Further, the pressure washer has a DC power mode and an AC power mode. The pressure washer further includes a mode switching mechanism. The mode switching mechanism is used to operably control the pressure washer to be driven by the DC power unit in the DC power mode, or in the AC Driven by the AC power unit in power mode. The cleaning performance of the DC power mode can be different from the AC power mode or the same. Preferably, the cleaning performance of the AC power mode is better than that of the DC power mode.

The pressure washer includes a direct current conduction circuit formed by the battery pack 144 and the first motor 142 that can be selectively turned on and off, and an alternating current conduction circuit formed by the second power 162 and the AC power that can be selectively turned on and off. The mode switching mechanism is used to operably control the on-off of the DC electric conduction circuit, operably control the on-off of the AC electric conduction circuit, and operably control the power connection mechanism and the first The motor 142 or the second motor 162 is connected.

In order to facilitate a better understanding of the technical solutions and technical effects of the present invention, the following will describe in more detail with reference to the accompanying drawings.

1 and 2, the power connection mechanism has a DC power input terminal for mating with the first motor 142 and an AC power input terminal for mating with the second motor 162. In other words, the first motor 142 and the second motor 162 are connected to the power by two different input terminals.

The DC power unit 14 and the AC power unit 16 may be relatively fixedly installed on the host 12, or one of the two may be detachably installed on the host 12 at least partially. For example, specifically in the embodiment shown in FIG. 1, the first motor 142 and the second motor 162 are relatively fixedly connected to the host 12, and the battery pack 144 is detachably connected to the host 12. Of course, the battery pack 144 can also be relatively fixedly connected to the host 12, and the power cord is not limited herein.

For another example, in the implementation shown in FIG. 2, the first motor 142 is relatively fixedly connected to the host 12, the second motor 146 can be detachably connected to the host 12, and the battery pack 144 is detachably connected to the host 12 . Of course, the battery pack 144 can also be relatively fixedly connected to the host 12, and the power cord is not limited herein. Further, the pressure washer 10 further includes a quick release mechanism for locking the AC power unit 16 to the host 12. Specifically, the quick release structure includes a locking portion 18 (see FIG. 2) provided on the main body 12 or the second motor 162, and a fitting portion for engaging with the locking portion 18 to fix the second motor 162 on the main body 12.

Exemplarily, as an embodiment, the locking portion 18 includes a stopper disposed on the inside of the tool housing 122, a buckle disposed on the outside of the tool housing 122, and a button that triggers the buckle. Pressing the button can release the buckle State or locked state. The engaging portion includes at least a limiting portion disposed on the second motor 162 and adapted to cooperate with the limiting surface, and a lug disposed outside the second motor 162. After the tool housing 122 and the second motor 162 are installed, the limit portion and the limit surface abut each other, and the buckle is in a locked state, thereby locking the lugs, so that the tool housing 122 and the second motor 162 are relatively immovable Fixed.

It should be noted that DC motors are energized conductors that are forced in a magnetic field. In order to turn the conductors up, the direction of the current needs to be changed continuously. Specifically, DC motors have commutators and other structures. Compared with the DC motor, the AC motor has no structure such as a commutator, so the structure is simple and the manufacturing is convenient. But at the same power, the weight of the AC motor is greater than the weight of the DC motor. Therefore, as a preferred embodiment, at least the AC power unit 16 is set to be detachable, but the DC power unit 14 and the AC power unit 16 are detachably The method of mounting on the host 12 is slightly different.

In some embodiments, the pressure washer 10 includes a DC control switch that controls the on-off of the DC electric conduction loop formed by the battery pack 144 and the first motor 142, and an AC-electric conduction loop formed by the AC power supply and the second motor 162. AC control switch. The mode switching mechanism is used to operably control the DC control switch to control the on-off of the DC electric conduction circuit, and operably control the AC control switch to control the on-off of the AC electric conduction circuit.

It can be understood that the DC control switch and the AC control switch may be electronic switches or mechanical switches, which are not limited herein.

Specifically in some embodiments, the DC control switch and the AC control switch are electronic switches, and the mode switching mechanism further includes a control component for controlling the DC control switch and the AC control switch. The control part may be provided with a control program that can control the on and off of the DC control switch and the AC control switch, thereby controlling the on and off of the electrical conduction circuit formed by the first motor 142 and the battery pack 144, and the second motor 162 and the AC power supply On-off of the formed electrical conduction loop. Further, the control component can also be connected to a control valve for controlling the connection between the water inlet and the liquid inlet pipe, while the control component controls the conduction of the direct current conduction circuit or the alternating current conduction circuit, it also controls the control The opening or closing of the valve. That is to say, the mode switching mechanism can realize the power connection in different modes, and also enable the pressure washer 10 to be in the power-on state or the standby state at the same time.

Further, the control component may include a control board that receives the operation signal and controls the conduction of the DC electric conduction circuit, the conduction of the AC electric conduction circuit, or both of them (the power-off state), and may also be conducted in the DC electric conduction When the conducting circuit is conducting or the alternating current conducting circuit is conducting, the control valve can be controlled to open. The control switch includes a field-effect transistor. Specifically, in an embodiment, the field-effect transistor is a MOS (Metal Oxide Oemiconductor, MOS), that is, a metal-oxide-semiconductor field-effect transistor. The control part can control the on-off of the MOS tube according to the signal, thereby controlling the on-off of the direct current conduction circuit and the on-off of the alternating current conduction circuit.

It can be understood that the pressure washer 10 also has a speed regulating element that regulates the speed of the motor. The speed regulating element can be electrically connected to the control component, and the control component can control the speed of the first motor 142 or the second motor 162 according to the speed regulating instruction of the regulating element. Speed changes. Specifically in the embodiment, the control component adjusts the duty ratio of the first motor 142 or the second motor 162 to adjust the rotation speed, that is, the rotation speed is adjusted by the PWM adjustment circuit. The change in the rotation speed of the first motor 142 or the second motor 162 will cause the movement cycle of the pump 17 to change, thereby changing the outlet pressure of the pressure washer 10. Of course, the speed regulating element can also adjust the pressure of the pump 17 output liquid flow through the area of the pump 17 outlet cross section.

In some embodiments, the mode switching mechanism further includes a clutch 118 that can move between the first clutch position and the second clutch position; when the clutch 118 is in the first clutch position, the clutch 118 can be connected to DC power The input end is used to input power; when the clutch 118 is in the second clutch position, the clutch 118 can be connected to the AC power input to input power.

Further, the power connection mechanism includes a power input shaft 112 connected to the pump 17, a clutch 118 is movably disposed on the power input shaft 112 along the axis direction of the power input shaft 112, and the clutch 118 and the power input shaft Drive connection. In other words, the clutch 118 is coupled to the power input shaft 112 in an axially movable but non-rotatable manner. For example, the surface of the power input shaft 112 is provided with a sliding pin, and the clutch 118 can move axially under the restriction of the sliding pin. However, it cannot rotate relative to the power input shaft 112. It can be understood that in one embodiment, the clutch member 118 moves along the axial direction of the power input shaft 112 when it moves, however, in other embodiments, the movement direction of the clutch member 118 is not limited thereto.

The DC power input end and the AC power input end are respectively disposed on the power input shaft 112, and are located on both sides of the clutch 118 along the axis direction of the power input shaft 112. When the clutch 118 is at the first clutch position during the movement, the clutch 118 can be connected to the DC power input to transmit power; when the clutch 118 is at the second clutch position during the movement, the clutch 118 can be connected to the AC Power input to transmit power.

Specifically, the DC power input end, the AC input end, and the clutch 118 are all gears disposed on the power input shaft 112, the DC power input end is the first gear 116, and the AC power input end is the second gear 114. When the first motor 142 outputs power, the power can be transmitted to the reciprocating drive mechanism 15 of the pump 17 through the first gear 116, the clutch 118, and the power input shaft 112 in this order. When the second motor 162 outputs power, the power can be transmitted to the reciprocating drive mechanism 15 of the pump 17 through the second gear 114, the clutch 118 and the power input shaft 112 in this order.

In this way, the corresponding DC/AC power unit 16 can be used under different working conditions, thereby improving the portability of the pressure washer 10, and meeting the working time and pressure of the pressure washing machine 10 under different working conditions The balance between the weight of the washing machine 10 and the cleaning efficiency.

In some embodiments, the clutch 118 also includes a third clutch position between the first clutch position and the second clutch position during movement. When the clutch 118 is in the third clutch position, the clutch 118 is disconnected from both the DC power input end and the AC power input end. It should be noted that the third clutch position is not necessarily a specific position, but may also be a section of the clutch 118 during the movement.

In this way, there is a neutral node or neutral time period during the switching between the DC power mode or the AC power mode to avoid the inconvenience caused by the user's misoperation.

3 shows a schematic structural view of a pressure washer in another embodiment of the present invention; FIG. 4 shows a schematic diagram of the connection relationship between the operating unit 20 and the clutch 118 of the pressure washer shown in FIG. 3; for convenience The description, the same element label is the same, no change.

In particular, the mode switching mechanism further includes an operation unit 20 for operably controlling the DC control switch 22, the AC control switch 24, and the control clutch 118 to mate with the DC power input terminal or the AC power input terminal. Specifically in some embodiments, the operating unit 20 may include different operating parts that are independent of each other to control the circuit and the clutch 118 separately; in other embodiments, a single operating part may also be included, which also achieves the control circuit and the clutch The efficacy of piece 118.

For example, in some embodiments, the mode switching mechanism includes an operating member operatively connected to the host 12, and a linkage mechanism 21 connected between the operating member and the clutch 118. The operating member controls the on-off of the DC control switch or AC control switch through the linkage mechanism 21 and operably controls the clutch 118 to move between the first clutch position and the second clutch position to select the pressure washer 10 to be driven by the DC power unit 14 or driven by the AC power unit 16. Specifically, when the DC control switch is controlled to be closed and turned on, the clutch 118 is moved toward the first clutch position, and when the AC control switch is controlled to be turned on, the clutch 118 is moved toward the second clutch position.

Specifically in some embodiments, the operating member may be an operating knob 26 that is pivotally connected to the host 12 and is configured to be operably movable in at least one direction. Both the DC control switch and the AC control switch are mechanical switches. The mechanical DC control switch 22 is located on the rotation path where the operation knob 26 rotates in the first direction, and the mechanical AC control switch 24 is located on the rotation path where the operating member rotates in the second direction opposite to the first direction. When the operating knob 26 rotates in the first direction, the clutch 118 can be connected to the DC power input terminal, and the mechanical DC control switch 22 can be turned on; when the operating member rotates in the second direction, the clutch 118 can be connected to the AC power input terminal. 1. Control the mechanical AC flow control switch 24 to open.

More specifically, a pivoting switch lever 28 is provided on the rotation path of the operation knob 26 in two opposite directions, and a shift point 23 is provided on the operation knob 26. When the operation knob 26 is along the first direction (reverse (Clockwise direction) to a position, the switch lever 28 is pushed to trigger the mechanical DC control switch 22 to turn on. When the operation knob 26 is rotated to another position in the second direction (clockwise direction), the other switch lever 28 is pushed to trigger the mechanical AC control switch 24 to be turned on. In this way, operable control due to DC power supply or AC power supply is achieved. At the same time, during the rotation of the operation knob 26, the clutch 118 can be driven to move between the first clutch position and the second clutch position.

The linkage mechanism 21 is connected between the operating member and the clutch member 118 to convert the rotational movement of the operating member into the movement of the clutch member 118 between the first position and the second position. Specifically, the operating member, the linkage mechanism 21 and the clutch member may constitute a crank-slider-like mechanism; specifically, in the embodiment, the linkage mechanism 21 may be a link assembly that is pivotally connected to the operating member and the clutch member 118, respectively. During the rotation of the operating member, the clutch member 118 can be finally driven to move along the axis of the power input shaft 112 and move between the first position and the second position, so that the clutch member 118 can be connected to the DC power input end or the AC power input端连接。 End connection.

It can be understood that the linkage mechanism 21 may also be other forms of mechanical structures, which can achieve the purpose of converting the rotational movement of the operating member into the movement of the clutch member 118 between the first position and the second position.

It should be understood that during the start-up process, if the electrical conduction circuit is controlled to be closed first, and then the clutch 118 is connected to the power input terminal, on the one hand, there is a phenomenon of no-load idling of the motor, wasting electrical energy, on the other hand, when the motor starts When it rotates, the clutch 118 is difficult to engage with the DC power input end and the AC power input end, which poses a safety hazard. Therefore, when starting up, the clutch 118 should be controlled to engage with the corresponding power input first, and then the electrical conduction circuit should be closed.

For example, when the operation unit 20 may include different operation parts that are independent of each other to control the circuit and the clutch 118 respectively, it is necessary to require the user to operate the corresponding operation part first to engage the clutch 118 with the DC power input end or the AC power input end , But there are still misoperations and poor operation convenience. Therefore, in a preferred embodiment, when the operating member rotates in the first direction, the clutch 118 and the DC power input end are engaged before the DC control switch is turned on; when the operating member rotates in the second direction, the clutch 118 and the AC The power input is engaged before the AC control switch is turned on.

In this way, misoperation can be prevented, operation convenience is improved, and hidden safety hazards are reduced.

Of course, the connection of the clutch 118 to the DC power input terminal can also synchronize the opening of the DC control switch, and the connection of the clutch 118 to the AC power input terminal synchronizes the opening of the AC control switch.

FIG. 5 shows a schematic diagram of the principle of the mode switching mechanism of the pressure washer in the DC power mode in some other embodiments of the present invention; FIG. 6 shows the mode switching of the pressure washer shown in FIG. 5 in the AC power mode Schematic diagram of the mechanism.

Referring to the drawings, the mode switching mechanism includes a power switching shaft 32 connected to the body of the pump 17 and movable in a predetermined direction, and a DC power input terminal 34 and an AC power input terminal 36 are respectively disposed on the power switching shaft 32. The power switching shaft 32 is movable between a first moving position and a second moving position in a preset direction. As shown in FIG. 5, when the power switching shaft 32 is at the first moving position during the moving process, the DC power input end 34 can be mated with the first motor 142, and the battery pack 144 and the first motor 142 pass through the DC circuit in the figure It is coupled to a direct current conduction circuit controlled by the direct current control switch 44. As shown in FIG. 6, when the power switching shaft 32 is in the second moving position during the movement, the AC power input 36 can be mated with the second motor 162, and the AC power source and the second motor 162 are coupled through the AC circuit in the figure In the AC electric conduction circuit controlled by the AC control switch 44.

Similar to the foregoing embodiments, the mode switching mechanism further includes an operating member operatively connected to the host 12 and a linkage mechanism 21 connected between the operating member and the power switching shaft 32. The operating member is configured to operably control the power switching shaft 32 to move between the first moving position and the second moving position to select whether the pressure washer 10 is driven by the DC power unit 14 or the AC power unit 16.

In this way, the closing of the electrical conduction circuit and the engagement of the mechanical clutch structure and the motor can be achieved at the same time, and the pressure washer 10 can be switched in different modes. In addition, it can prevent misuse, improve the convenience of operation, and reduce potential safety hazards.

FIG. 7 shows a schematic structural diagram of a pressure washer 10 in still another embodiment of the present invention; FIG. 8 shows a schematic structural diagram of a pressure washer 10 in still another embodiment of the present invention. For ease of description, only the components related to the present invention are shown in the drawings.

To facilitate under different working conditions, the pressure washer 10 can have a better portability and ease of operation. Referring to the drawings, in some embodiments, the power connection mechanism includes the first motor 142 and the second motor 162. For the universal power input that can be connected, the first motor 142 and the second motor 162 can be selectively detachably connected to the host 12. When the first motor 142 or the second motor 162 is installed in the host machine 12, the first motor 142 or the second motor 162 is connected to the universal input terminal to input power, so that the pump 17 can be operated by the first motor 142 or the second motor 162 drive.

For example, specifically in the embodiment shown in FIG. 7, the battery pack 144 is relatively fixed or can be detachably mounted on the host 12, and the first motor 142 or the second motor 162 can be detachably mounted on the host 12, and It can be connected with general input terminal. For another example, specifically in the embodiment shown in FIG. 8, the battery pack 144 is relatively fixed or can be detachably mounted on the first motor 142, and the first motor 142 or the second motor 162 can be selectively detachably connected to the host 12.

When the user wants to perform outdoor cleaning, the DC power unit 14 is installed on the host 12 and the pressure washer 10 is in the DC power mode. When the user wants to perform cleaning under other working conditions, the AC power unit 16 is installed on the host 12 and the pressure washer 10 is in the AC power mode. In this way, the weight of only one power unit can be achieved in different modes. Compared with the previous embodiment where only the AC power unit 16 is detachably mounted on the host 12, especially in the AC power mode, it has a relatively better portability Sex and ease of operation.

In a specific embodiment, the host 12 includes a tool housing 122, the pump 17 and the power connection mechanism are supported in the tool housing 122; the DC power unit 14 includes a first housing 146, and the first motor 142 is supported by the first housing 146; the first housing 146 can be detachably installed with the tool housing 122, when the first housing 146 is installed in the tool housing 122, the first motor 142 is connected to the DC power input, the pump 17 can be A motor 142 drives.

The AC power unit 16 includes a second housing 164, and the second motor 162 is disposed in the second housing 164; the second housing 164 can be detachably installed with the tool housing 122 when the second housing 164 is installed in the tool housing The body 122 and the second motor 162 are connected to the AC power input end, and the pump 17 can be driven by the second motor 162.

In some embodiments, the pressure washer 10 further includes a quick release mechanism for locking the first motor 142 or the second motor 162 to the host. Specifically, the quick release mechanism may be similar to the locking portion in the foregoing embodiment, including a limit surface provided on the inside of the tool housing 122 of the host machine 12, a buckle provided on the outside of the tool housing, and a button to trigger the buckle 18. Pressing the button 18 can make the buckle in a released state or a locked state.

It should be noted that, in the embodiment where the DC power unit 14 and the AC power unit 16 are alternately installed on the host 12, the battery pack 144 can be detachably installed in the first housing 146 or the tool housing 122. For example, in one embodiment, the battery pack 144 is fixedly installed on the tool housing 122, and the user only needs to detachably install the first motor 142 or the second motor 162 on the tool housing 122 during use. . In another embodiment, the battery pack 144 is detachably installed on the first housing 146. During use, the user needs the first motor 142 and the battery pack 144 to be installed on the tool housing 122. However, When the user installs the second motor 162 on the tool housing 122, the weight of the battery pack 144 can be reduced.

It should be understood that, since there is only one universal input terminal, the first motor 142 and the second motor 162 are selectively detachably mounted on the host machine 12, and the first motor 142 or the second motor 162 is installed on the host machine 12 as Select to match the first motor 142 or the second motor 162 to switch between the first motor 142 and the input end to match the input power or the second motor 162 and the input end to match the input power. However, it is necessary to switch the DC conduction circuit or the AC conduction circuit. The mode switching mechanism further includes an identification component; the identification component is used to identify the first motor 142 and the second motor 162 connected to the host; the pressure washer 10 is based on the identification component The recognition result causes the first motor 142 and the battery pack 144 to be coupled to the DC conduction circuit controlled by the DC control switch; or the second motor 162 and the AC power source to be coupled to the AC conduction circuit controlled by the AC control switch.

In some embodiments, the first motor 142 and the second motor 162 are provided with different triggers; when the first motor 142 and the second motor 162 are installed in the host 12, the recognition component can recognize different triggers and output a characterization recognition The signal of the result. Specifically in an embodiment, the recognition component may input a signal characterizing the recognition result to the aforementioned control component, which may control the on/off of the DC control switch or the AC control switch, thereby controlling the first motor 142 or the second motor 162 to drive该泵17。 The pump 17.

It can be understood that, in some other embodiments, the first motor 142 and the second motor 162 may also be optionally provided with a trigger, and the identification component may identify the trigger to identify different power units connected. For example, a trigger is provided on the second motor 162. When the first motor 142 is installed on the host 12, the identification component does not recognize the trigger and determines that the corresponding motor is connected to the host 12. When the second motor 162 is installed on the host 12, the identification component recognizes the trigger, thereby determining that the second motor 162 is connected to the host 12.

It can be understood that how the control component controls the on-off of the pressure washer 10, and the on-off of the DC electric conduction circuit, and the on-off of the AC electric conduction circuit can be referred to some of the aforementioned embodiments, and the specific structure and principle.

In this way, the pressure washer 10 can be automatically identified and switched to the corresponding mode according to different power units, thereby increasing the scope and flexibility of the pressure washer 10 without the need to replace the host 12. In addition, the on-off control can also be performed according to the recognition result to prevent the host 12 from being connected to an external water source without being equipped with a power unit.

In some embodiments, the triggering element may be a magnet or an inductive coil, and the identification component is a Hall detection element. For example, only when the first motor 142 is provided with a triggering element, the second motor 162 is installed on the host 12, the second motor 162 There is no trigger, and the voltage value recognized by the identification component is zero. When the first motor 142 is installed in the host 12, the identification component senses the trigger and generates a corresponding non-zero voltage value.

In other embodiments, the identification component and the trigger may also be contact triggers. For example, the identification component may include two contact members that are independently provided, and different ejectors (trigger members) are provided on the first motor 142 and the second motor 162. When different motors are installed on the host 12, the corresponding jacks can be in contact with the contact members to trigger the generation of corresponding signals. For example, the contact may be a contact switch.

Specifically, in the embodiment, the trigger may be disposed on the first housing 146 of the first motor 142; and/or disposed on the second housing 164 of the second motor 162.

It can be understood that the triggering forms of the identification component and the triggering element may be other, which are not exemplified here.

It can be understood that the number of identification components and triggers may also depend on the specific structures of the DC power unit 14 and the AC power unit 16 and the specific installation positions of the two, which are not limited herein. For example, one identification component may identify different triggers, or one identification component may correspond to one trigger.

In other embodiments, the identification component includes an interface connection module, the interface connection module includes a first terminal for adapting to the first motor 142, and a second terminal for adapting to the second motor 162, preferably , The interface connection module is provided on the host. When the first motor 142 is coupled to the universal power input terminal, the first motor 142 and the battery pack 144 are coupled to the DC electric conduction circuit controlled by the DC control switch through the first terminal; when the second motor 162 is coupled to the universal power input terminal Through the second terminal, the second motor 162 and the AC power supply are coupled to the AC electric conduction circuit controlled by the AC control switch.

In other words, when the first motor 142 is installed in the host, the first motor 142 and the battery pack 144 can form an electrical conduction circuit controlled by a DC control switch. Similarly, when the second motor 162 is installed in the host, the second motor 162 and the AC power supply can form an electrical conduction circuit controlled by the AC control switch.

In this way, it is also possible to switch the pressure washer between different modes to provide power from a DC power supply (battery pack 144) or from an AC power supply.

It should be noted that in the foregoing embodiments, when the power cord is not mentioned, it can be understood that the power cord can be detachably or fixedly connected to the host or the second motor 162.

In particular, in some embodiments, the pressure washer 10 further includes a support member (not shown). Specifically, the support member may be a bracket or a movable cart that can support a mechanical structure to assist movement. The second motor 162 is relatively fixed to the support member, and the host 12 can be detachably installed with the support member. When the host 12 is installed on the support member, the pump 17 can be selectively driven by the DC power unit 14 or the AC power unit 16.

For example, in the specific embodiment, the DC power unit 14 may be relatively fixed or detachably connected to the host machine 12, and the DC power unit 14 host machine 12 is used as a whole under the condition that only DC power supply is required, and the AC power The unit 16 is fixedly installed on a bracket or a cart. When the AC power supply is needed, the whole unit composed of the DC power unit 14 and the host 12 can be installed on the cart, so that the AC power unit 16 can supply power. At this time, since the weight of the pressure washer 10 includes the weights of the DC power unit 14, the host 12, and the AC power unit 16, it is not easy to move, just move the bracket or cart. In this way, the portability of the pressure washer 10 is improved, the use is convenient, and under different operating conditions, the balance between the working time of the pressure washer 10, the weight of the pressure washer 10, and the cleaning efficiency is satisfied.

It can be understood that the first motor 142 is a DC motor, and the second motor 162 is an AC motor. The first motor 142 and the second motor 162 are high-speed motors; the rotation speeds of the first motor 142 and the second motor 162 are greater than 10,000 rpm. The power connection mechanism also includes a speed reduction mechanism. The first motor 142 and the second motor 162 are connected to the DC power input terminal or the AC power input terminal through the speed reduction mechanism. The reduction ratio of the speed reduction mechanism is between 12:1 and 3:1 . For example, specifically in the embodiment shown in FIG. 1, the reduction mechanism may be a gear reduction mechanism. The reduction mechanism includes a reduction shaft 132 and a first transmission gear 134 and a second transmission gear 136 provided on the reduction shaft 132. The output shaft of a motor 142 can be mated with the second transmission gear 136, so as to realize the transmission of power and achieve the effect of deceleration. In this way, by changing the number of transmission gears and the number of teeth, the reduction ratio can be adjusted, and a lighter high-speed small motor and gear reduction mechanism are used to replace the heavier low-speed large motor, which reduces the weight of functional components and achieves better water output And cleaning efficiency. Of course, the speed reduction mechanism can also be in other forms, which is not limited herein.

It can be understood that, in some other embodiments, the power connection mechanism may not be provided with a speed reduction mechanism, that is, directly driven by a low-speed motor.

A specific embodiment will be described below.

The pressure washer includes a host 12, a speed reduction mechanism, a DC power unit 14, and an AC power unit 16. The main unit 12 includes a tool housing 122 and functional components supported in the tool housing 122. The functional components include at least a pump 17 that delivers water outward. The main unit 12 also includes a power access mechanism connected to the pump 17, and the cleaning accessory is removable Is mounted on the tool housing 122. The DC power unit 14 includes a first motor 142 and a battery pack 144 for providing DC driving power to the first motor 142. The AC power unit 16 includes a second motor 162, and a power cord for connecting to the second motor 162 to connect an AC power source.

The pump 17 includes a pump body, a plunger configured to reciprocate in the pump 17, and a reciprocating drive mechanism (swash plate mechanism) connected to the plunger. The power access mechanism includes a power input shaft connected to the swash plate mechanism 112. The power input shaft 112 is provided with a first gear 116, a second gear 114 and a clutch 118 that can be drivingly connected to the first gear 116 or the second gear 114. The reduction mechanism includes a reduction shaft 132, a first transmission gear 134 and a second transmission gear 136 provided on the reduction shaft 132, the second transmission gear 136 is coupled to the output shaft of the first motor 142, and the first transmission gear 134 and the first The gear 116 meshes. The first motor 142 is locked on the tool housing 122 by a locking bolt to install the first motor 142 on the host machine 12, and the output shaft of the first motor 142 can be meshed with the corresponding second transmission gear 136 to pass power The input shaft 112 inputs power. The second motor 162 is detachably mounted on the tool housing 122 through a locking structure. When the second motor 162 is mounted on the tool housing 122, the output shaft of the second motor 162 can be mated with the second gear 114, thereby Power is input to the power input shaft 112. There is one battery pack 144. The tool housing 122 is provided with a battery cavity for accommodating the battery pack 144. The battery pack 144 is detachably installed in the battery cavity.

For outdoor or simple household cleaning conditions, the AC power unit 16 can be detached from the host 12, and only the DC power unit 14 can meet user needs. For example, when the user cleans the house once a year or half a year, the pressure washer 10 needs to provide long-term operation. At this time, the AC power unit 16 can be installed on the host machine 12 to meet the user's needs through the AC power unit 16.

In this way, the corresponding power unit can be used under different working conditions, thereby improving the portability of the pressure washer 10 and satisfying the balance between the working time of the pressure washer 10, the weight of the pressure washer 10, and the cleaning efficiency .

The technical features of the above-mentioned embodiments can be arbitrarily combined. To simplify the description, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered within the scope of this description.

The above examples only express several implementations of the present invention, and their descriptions are more specific and detailed, but they should not be construed as limiting the patent scope of the invention. It should be noted that, for a person of ordinary skill in the art, without departing from the concept of the present invention, a number of modifications and improvements can also be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

The pressure washer is characterized by including:

The host machine includes a pump for transferring water outward and a power connection mechanism connected to the pump to receive power;

Water outlet structure, the pressure washer jets a pressure water flow outward through the water outlet structure;

A DC power unit, including a first motor that can be connected to the power connection mechanism, and a battery pack for providing DC drive power for the first motor; and

The AC power unit includes a second motor that can be connected to the power access mechanism, and a power cord for connecting an AC power source to the second motor;

The power connection mechanism is selectively connected with the first motor or the second motor, so that the pump is driven by the DC power unit or the AC power unit.
The pressure washer according to claim 1, wherein at least part of at least one of the DC power unit and the AC power unit can be detachably connected to the host machine.
The pressure washer according to claim 2, wherein the DC power unit is relatively fixedly connected to the host;

The first motor and the battery pack are independently and relatively fixedly connected to the host; or

The first motor is relatively fixedly connected to the host, and the battery pack is relatively fixedly connected to the first motor.
The pressure washer according to claim 2, wherein the part of the DC power unit can be detachably connected to the host;

The first motor is relatively fixedly connected to the host, and the battery pack can be detachably connected to the host or the first motor; or

The first motor can be detachably connected to the host, and the battery pack is relatively fixedly connected to the host.
The pressure washer according to claim 2, wherein the DC power unit can be completely detachably connected to the host;

The first motor and the battery pack can be detachably connected to the host independently of each other; or

The DC power unit includes a main case, the first motor is supported in the main case, the battery pack can be detachably or fixedly installed with the main case, and the main case can be connected with the The main body is detachably installed, and when the main housing is installed on the main body, the pump can be driven by the first motor.
The pressure washer according to claim 2, wherein the AC power unit is relatively fixedly connected to the host;

The second motor and the power cord are independently and relatively fixedly connected to the host; or

The second motor is relatively fixedly connected to the host, and the power cord is relatively fixedly connected to the second motor.
The pressure washer according to claim 2, wherein the AC power unit can be completely detachably connected to the host;

The second motor and the power cord can be detachably connected to the host independently of each other; or

The second motor can be detachably connected to the host, and the power cord can be detachably or relatively fixedly connected to the second motor.
The pressure washer according to claim 2, wherein a part of the AC power unit can be detachably connected to the host;

The second motor can be detachably connected to the host, and the power cord is relatively fixedly connected to the host; or

The second motor is relatively fixedly connected to the host, and the power cord can be detachably connected to the host or the second motor.
The pressure washer according to claim 1, wherein the DC power unit and the AC power unit are relatively fixedly connected to the host;

The first motor is relatively fixedly connected to the host, and the battery pack is relatively fixedly connected to the host or the first motor;

The second motor is relatively fixedly connected to the host, and the power cord is relatively fixedly connected to the host or the second motor.
The pressure washer of claim 1, wherein the pressure washer has a DC power mode and an AC power mode;

The pressure washer further includes a mode switching mechanism for operably controlling the pressure washer to be driven by the DC power unit in the DC power mode or in the AC power mode Driven by the AC power unit.
The pressure washer according to claim 10, wherein the pressure washer includes a DC electric conduction circuit formed by the battery pack and the first motor that can be selectively switched on and off, and an AC that can be selectively switched on and off An alternating current conduction circuit formed by the power source and the second motor;

The mode switching mechanism is used to operably control the on-off of the DC electric conduction circuit, operably control the on-off of the AC electric conduction circuit, and operably control the power connection mechanism and the first One motor or second motor is connected.
The pressure washer according to claim 10, wherein the power connection mechanism includes a DC power terminal for mating with the first motor, and an AC for mating with the second motor Power input.
The pressure washer according to claim 12, wherein the mode switching mechanism includes a clutch;

The clutch member can move between the first clutch position and the second clutch position;

When the clutch member is located at the first clutch position, the clutch member can be connected to the DC power input end to input power;

When the clutch member is in the second clutch position, the clutch member can be connected to the AC power input end to input power.
The pressure washer according to claim 13, wherein the clutch member further includes a third clutch position between the first clutch position and the second clutch position during movement;

When the clutch member is located at the third clutch position, the clutch member is disconnected from both the DC power input end and the AC power input end.
The pressure washer according to claim 13, wherein the power connection mechanism includes a power input shaft connected to the pump;

The clutch member is movably disposed on the power input shaft along the axis direction of the power input shaft, and the clutch member is drivingly connected to the power input shaft;

The DC power input end and the AC power input end are respectively provided on the power input shaft, and are located on both sides of the clutch member along the axis direction of the power input shaft.
The pressure washer according to any one of claims 13 to 15, wherein the pressure washer includes a DC control switch that controls the on-off of the DC electric conduction circuit formed by the battery pack and the first motor, And an AC control switch that controls the on-off of the AC power conduction circuit formed by the AC power supply and the second motor;

The mode switching mechanism is used to operably control the on and off of the DC control switch and the AC control switch;

When the pressure washer is in the DC power mode, the DC control switch is turned on, the DC electric conduction circuit is closed, the clutch can be connected to the pump and the DC power input end, and the pressure washer Driven by the DC power unit;

When the pressure washer is in the AC power mode, the AC control switch is turned on, the AC electric conduction circuit is closed, the clutch can be connected to the pump and the AC power input end, the pressure washer The AC power unit is driven.
The pressure washer according to claim 16, wherein the mode switching mechanism includes an operating member operatively connected to the host, and a linkage mechanism connected between the operating member and the clutch member ;

The operating member controls the on-off of the DC control switch or the AC control switch through the linkage mechanism and the clutch member moves between the first clutch position and the second clutch position to select the pressure washer by the The DC power unit drives or is driven by the AC power unit.
The pressure washer according to claim 17, wherein the operating member is pivotally connected to the host;

The DC control switch is located on a rotation path of the operation member rotating in a first direction, and the AC control switch is located on a rotation path of the operation member rotating in a second direction opposite to the first direction;

When the operating member rotates in the first direction, the clutch member can be connected to the DC power input terminal and the DC control switch can be turned on;

When the operating member rotates in the second direction, the clutch member can be connected to the AC power input terminal and the AC control switch can be turned on.
The pressure washer according to claim 18, characterized in that, when the operating member rotates in the first direction, the connection of the clutch member and the DC power input terminal is prior to or synchronized with the opening of the DC control switch;

When the operating member rotates in the second direction, the clutch member is connected to the AC power input terminal before or synchronously the AC control switch is turned on.
The pressure washer according to claim 12, wherein the mode switching mechanism includes a power switching shaft connected to the pump body and movable in a preset direction;

The DC power input end and the AC power input end are respectively provided on the power switching shaft;

The power switching shaft can move between a first moving position and a second moving position along a preset direction;

When the power switching shaft is located at the first moving position during the movement, the DC power input terminal can be mated with the first motor to input power;

When the power switching shaft is located at the second moving position during the movement, the AC power input end may be mated with the second motor to input power.
The pressure washer according to claim 20, wherein the pressure washer includes a DC control switch that controls the on-off of the DC electric conduction circuit formed by the battery pack and the first motor, and controls the AC power supply and An AC control switch for turning on and off the AC electric conduction circuit formed by the second motor;

When the power switching shaft is located at the first moving position during the moving process, the battery pack and the first motor are coupled to a DC electric conduction circuit controlled by the DC control switch to turn on and off;

When the power switching shaft is located at the second moving position during the moving process, the AC power supply and the second motor are coupled to an AC electric conduction circuit controlled by the AC control switch to turn on and off.
The pressure washer of claim 10, wherein the power connection mechanism includes a universal power input that can be mated with the first motor and the second motor; the first motor and The second motor can be selectively detachably connected to the host;

When the first motor or the second motor is installed on the host, the first motor or the second motor is mated with the universal input terminal to input power.
The pressure washer according to claim 22, wherein the pressure washer further includes a quick release mechanism for locking the first motor or the second motor to the host.
The pressure washer according to claim 22, wherein the pressure washer includes a DC control switch that controls the on-off of the DC electric conduction circuit formed by the battery pack and the first motor, and controls the AC power supply and An AC control switch for turning on and off the AC electric conduction circuit formed by the second motor;

The mode switching mechanism further includes an identification element for identifying the first motor and the second motor connected to the host;

The pressure washer couples the first motor and the battery pack to a DC electric conduction circuit controlled by the DC control switch according to the identification result of the identification element; or couples the second motor to an AC power source The AC electric conduction circuit controlled by the AC control switch.
The pressure washer according to claim 24, wherein the first motor and the second motor are provided with different triggers;

When the first motor or the second motor is installed in the host, the identification component may identify different triggers, and output a signal characterizing the identification result.
The pressure washer according to claim 24, wherein the identification component includes an interface connection module, the interface connection module includes a first terminal adapted to the first motor, and a A second terminal adapted to the second motor;

When the first motor is connected to the universal power input terminal, the first motor and the battery pack are coupled to the DC electric conduction circuit controlled by the DC control switch through the first terminal; when the second The motor is connected to the universal power input terminal, and the second motor and the AC power source are coupled to an AC electric conduction circuit controlled by the AC control switch through a second terminal.
The pressure washer according to claim 26, wherein the interface connection module is provided on the host.
The pressure washer according to claim 1, wherein the pressure washer further includes a support member for assisting the movement of the pressure washer; the second motor is installed on the support member;

The host can be detachably installed with the support member, and when the host is installed on the support member, the pump can be selectively driven by the DC power unit or the AC power unit.
The pressure washer according to claim 1, wherein the number of the battery pack is configured as one or more.
The pressure washer according to claim 29, wherein the rated voltage of the battery pack is 12 to 120V.
The pressure washer according to claim 1, wherein the pump includes a pump body, a plunger provided in the pump body, and a reciprocating connection between the plunger and the power connection mechanism Drive mechanism, the reciprocating drive mechanism converts the rotary output into the movement of the plunger;

The first motor or the second motor may drive the reciprocating drive mechanism through the power connection mechanism to drive the plunger to reciprocate in the pump body.
The pressure washer according to claim 1, wherein the first motor and the second motor are high-speed motors; the rotation speed of the first motor and the second motor is greater than 10,000 rpm;

The power connection mechanism includes a speed reduction mechanism.
The pressure washer according to claim 1, characterized in that the pressure washer further comprises a cleaning accessory connected to the pump, so that when the cleaning accessory is installed on the host, pressure water flow can pass through the The cleaning accessories are sprayed outward.
The pressure washer is characterized by including:

The host includes a pump for outwardly transferring water flow, a power connection mechanism connected to the pump to receive power, and a battery pack mounting portion for connecting a battery pack that provides energy to the pump;

Water outlet structure, the pressure washer jets a pressure water flow outward through the water outlet structure;

DC power unit, including a first motor that can be mated with the power connection mechanism; and

The AC power unit includes a second motor that can be connected to the power access mechanism, and a power cord for connecting an AC power source to the second motor;

The power connection mechanism is selectively connected with the first motor or the second motor, so that the pump is driven by the DC power unit or the AC power unit.