Power supply unit of electric power tool and car washer having the same

Abstract

The application discloses a power supply component of an electric tool, which is used for supplying power for a machine body of the electric tool and comprises a battery compartment, a battery pack and an unlocking button. The battery compartment is arranged outside the machine body, and at least one accommodating cavity is formed in the battery compartment. The battery pack is detachably arranged in the accommodating cavity, and the battery pack is adapted to slide into and out of the tail part of the accommodating cavity along an axial direction. The unlocking button is movably arranged on the battery compartment, and the unlocking button is adapted to enter the head part of the accommodating cavity along the axial direction and push the battery pack to slide out of the accommodating cavity. The power supply component has the advantages of reasonable arrangement, convenient mounting and dismounting and reliable use.

Description

Technical Field

[0001] This application relates to the field of power tools, and more particularly to car wash machines. Background Technology

[0002] To improve the versatility of power tools and make their working range unrestricted by socket locations, many power tools on the market use battery packs for power. Since most power tools are used handheld, the impact on the user must be considered during use. Therefore, it is crucial to ensure the battery pack is securely installed and easy for the user to replace.

[0003] Currently, there are two main methods for installing battery packs: one is to attach the battery pack externally to the end of the power tool, typically below the handle; the other is to have a battery compartment inside the power tool, with the battery pack detachably installed in the form of cylindrical batteries. External battery packs are often larger and heavier, making the power tool cumbersome and negatively impacting the user experience. Furthermore, external battery packs require a locking mechanism between themselves and the power tool, necessitating precise alignment during installation. This alignment is difficult for the user to observe, increasing the complexity of the operation. Battery packs installed in a battery compartment need to be inserted into the power tool, often requiring a pop-out mechanism, increasing structural complexity and overall cost. The reliability of this pop-out mechanism directly affects the lifespan of the power tool. Additionally, battery packs located inside the battery compartment cannot dissipate heat effectively, raising concerns about safety.

[0004] Therefore, how to improve the battery pack installation method of existing power tools to overcome the above problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] One object of this application is to provide a power supply component for power tools that is reasonably arranged, easy to install and remove, and reliable in use.

[0006] Another object of this application is to provide a car wash machine having the aforementioned power supply components.

[0007] To achieve the above objectives, the technical solution adopted in this application is: a power supply component for an electric tool, used to provide power to the body of the electric tool, including a battery compartment, a battery pack, and an unlock button;

[0008] The battery compartment is located outside the body, and the battery compartment has at least one receiving cavity.

[0009] The battery pack is detachably disposed within the receiving cavity, and the battery pack is adapted to slide in and out of the receiving cavity axially from the tail end;

[0010] The unlock button is movably disposed on the battery compartment, and the unlock button is adapted to enter the head of the receiving cavity axially and push the battery pack out of the receiving cavity.

[0011] As an improvement, a heat dissipation notch is provided on the outer wall of the battery compartment, extending into the receiving cavity and exposing the side wall of the battery pack. This results in better heat dissipation for the battery pack, ensuring reliability and safety during use.

[0012] As a rational arrangement, the bottom of the battery compartment is connected to the body, and the heat dissipation opening is located at the top of the battery compartment.

[0013] Preferably, there are two parallel cavities and two corresponding battery packs. A series-connected dual battery pack configuration can increase the voltage input, thereby increasing the output power of the power tool; a parallel-connected dual battery pack configuration can extend the power tool's runtime; the choice of configuration depends on the usage requirements of the power tool.

[0014] Specifically, a push rod extends from the unlock button, the push rod is adapted to enter the receiving cavity and abut against the battery pack, the unlock button is slidably disposed in the battery compartment, and a reset spring is provided between the unlock button and the battery compartment, the reset spring being adapted to force the push rod away from the receiving cavity.

[0015] Correspondingly, there are two parallel receiving cavities, and two corresponding battery packs; there are two parallel push rods, and pressing the unlock button allows both battery packs to slide out of the receiving cavities simultaneously via the two push rods. The parallel arrangement of the dual battery packs and the parallel arrangement of the dual push rods allows both battery packs to be pushed out simultaneously with a single press, further facilitating the disassembly of the battery packs, especially the dual battery packs.

[0016] The specific structure of the battery compartment includes a housing, a compartment body, a first baffle, and a second baffle. The housing has an electrical chamber and a mechanical chamber inside. The receiving cavity is opened on the compartment body. The first baffle is disposed between the electrical chamber and the mechanical chamber. The second baffle is disposed at the rear end of the electrical chamber. The first baffle and the second baffle are adapted to fix the compartment body in the electrical chamber. The battery pack is adapted to pass through the second baffle and enter the receiving cavity. The unlock button is slidably disposed in the mechanical chamber. The unlock button is adapted to pass through the first baffle and enter the receiving cavity.

[0017] Furthermore, a limiting frame is provided on the inner wall of the housing between the electrical compartment and the mechanical compartment. The first baffle is disposed within the limiting frame, the compartment body is fixedly fastened to the first baffle, and the second baffle is fixedly fastened to the housing. The limiting frame and the second baffle cooperate to restrict the axial displacement of the compartment body together with the first baffle.

[0018] Furthermore, snap-fit ​​rings extend from both sides of the first baffle, and wedge-shaped buckles are provided on both sides of the compartment body. The wedge-shaped buckles are adapted to enter the snap-fit ​​rings axially so that the compartment body is snapped and fixed on the first baffle. Limiting blocks are provided on both sides of the housing base in a vertical direction, and limiting grooves are opened on both sides of the second baffle in a vertical direction. The limiting blocks are adapted to enter the limiting grooves vertically so that the second baffle is snapped and fixed on the housing base.

[0019] Furthermore, the inner wall of the housing extends into the mechanical chamber to form a groove, and sliders are provided on both sides of the unlock button. The sliders are adapted to slide along the axial direction in the groove so that the unlock button is slidably disposed in the mechanical chamber.

[0020] Furthermore, an electrical contact is provided between the first baffle and the compartment body. One end of the electrical contact extends into the receiving cavity and is adapted to be electrically connected to the battery pack. The other end of the electrical contact extends into the mechanical chamber and is adapted to be electrically connected to the power supply line of the machine body. An annular groove is formed on the end face of the compartment body, and the electrical contact is fitted into the annular groove. The first baffle is fixedly disposed on the end face of the compartment body and restricts the electrical contact from disengaging from the annular groove.

[0021] As a positioning structure for the battery pack, a latch is provided inside the compartment, and a latch groove is provided on the outer wall of the battery pack. The latch is adapted to move in and out of the latch groove so that the battery pack is locked or unlocked from the compartment.

[0022] Furthermore, the bottom of the compartment is suspended, and the latch is located at the bottom of the compartment. Separation gaps are provided on both sides of the latch, which enable the latch to deform vertically.

[0023] Furthermore, multiple ribs are provided along the axial direction on the inner wall of the compartment, and the battery pack abuts against these ribs while maintaining a gap with the inner wall of the compartment. The ribs facilitate smoother entry and exit of the battery pack from the compartment and also create gaps to enhance heat dissipation.

[0024] A car wash machine includes a power supply component for power tools.

[0025] The car wash machine includes a housing, and the battery compartment includes a housing base. The housing includes two housing components that are joined together to form the housing. The housing base includes two housing base components that are joined together to form the housing base. The two housing base components are integrally formed on the two housing components, and the housing base components and housing components on both sides are adapted to be fixed by fasteners. The integral molding design of the battery compartment and the housing simplifies the processing and assembly steps, reduces the overall cost, and increases the integrity of the car wash machine, ensuring structural strength.

[0026] Furthermore, a shielding shell is fixedly provided on the outer side of the housing and the housing base, the shielding shell covering the positions on the housing base and the housing base where fasteners pass through. The shielding shell eliminates the exposed fasteners, further enhancing the integrity and aesthetics of the car wash machine.

[0027] Furthermore, the shielding shell includes two shielding shell components, which are merged to form the shielding shell. The two shielding shell components are respectively snapped and fixed onto the shell base component and the shell component on the corresponding side. Multiple claws extend from the inner wall of the shielding shell component, and multiple slots are provided on the outer walls of the shell base component and the shell component. The claws are adapted to enter the slots so that the shielding shell component is fixed onto the shell base component and the shell component.

[0028] As a rational layout, the car wash machine includes a shaft extension and a handheld part. The power supply component is located above the shaft extension, and the axial direction of the power supply component is parallel to the length direction of the shaft extension. A water inlet connector is located below the shaft extension, and a water outlet connector is located at the front end of the shaft extension. The handheld part connects to the rear end of the shaft extension and extends downward. First, the installation position and orientation of the power supply component make the installation and removal of the battery pack more intuitive and convenient. Second, the above arrangement keeps the water inlet and outlet connectors at a distance from the power supply component, effectively reducing the possibility of water entering the power supply component and improving the safety of using the car wash machine.

[0029] Furthermore, the power supply component is positioned near the rear end of the shaft extension, and the battery pack inlet / outlet is located at the rear end of the shaft extension, while the unlock button is located at the front end of the shaft extension. For ergonomic reasons, the closer the center of gravity of the car wash machine is to the handheld part, the better the grip. Therefore, the power supply component in this application needs to be positioned as far back as possible. Moreover, the battery pack accounts for the largest weight among the power supply components, so it also needs to be positioned towards the rear end of the battery compartment. Based on this, this application limits the orientation of the power supply component, placing the battery pack inlet / outlet at the rear end of the shaft extension, while placing the lighter unlock button at the front end of the shaft extension.

[0030] Furthermore, the car wash machine is equipped with an electric drive assembly and a controller. The electric drive assembly is disposed within the shaft extension portion along the front-to-back direction and extends rearward into the handheld portion. The controller is disposed within the handheld portion. The partial location of the tail end of the electric drive assembly within the handheld portion, along with the controller, effectively utilizes the limited space of the machine, shortening the length of the shaft extension portion and making the overall design more compact. Moreover, this structure also shifts the center of gravity of the machine towards the handheld portion.

[0031] Specifically, the electric drive assembly includes a motor, a transmission component, and a pump body arranged sequentially from back to front. The rear end of the motor enters the handheld part, the lower part of the pump body is connected to the water inlet connector, and the front end of the pump body is connected to the water outlet connector. Because the motor accounts for a significant amount of weight, it is positioned rearward and partially overlaps with the battery pack to meet ergonomic requirements.

[0032] Furthermore, the car wash machine has an air inlet near the water inlet connector, a cooling fan on the motor, and an air outlet adjacent to the cooling fan. The motor is the largest heat source of the entire machine, while the water inlet connector is the overall cold source. The arrangement of the air inlet and outlet allows for more thorough heat and cold circulation, which is beneficial for the overall heat dissipation of the machine.

[0033] Furthermore, the car wash machine also includes control buttons, which are located at the junction of the shaft extension and the handheld part. The control buttons are positioned high to prevent accidental activation.

[0034] Compared with the prior art, the beneficial effects of this application are as follows:

[0035] (1) The external placement of the battery compartment and battery pack in this application can, on the one hand, avoid occupying the limited internal space of the power tool body and facilitate the reasonable arrangement of other components, and on the other hand, increase the contact area between the battery compartment and battery pack and the outside, facilitate heat dissipation of the battery pack, and ensure its reliability.

[0036] (2) The battery pack of this application can be pushed into the battery compartment axially, and the battery compartment is externally located, making the battery pack installation process more intuitive and convenient. Correspondingly, pressing the unlock button can push the battery pack out of the battery compartment axially from the other end, making the battery pack installation and disassembly processes exactly the opposite, which conforms to the user's intuition. Therefore, the structural design of the battery compartment and the battery pack installation and disassembly method of this application greatly reduce the difficulty of installing and disassembling the battery pack and improve the efficiency of installing and disassembling the battery pack, so that even first-time users can quickly get started.

[0037] (3) When the power supply component of this application is used for a long time, only the battery pack that has reached the end of its service life needs to be replaced, without replacing the battery compartment. Compared with the overall replacement of an external battery pack, this can reduce the cost of use to a certain extent. It is worth mentioning that the battery pack of this application can be designed as a standard part similar to dry cell batteries (i.e., household AA batteries, AAA batteries, etc.), so that it can be used on different power tools, increasing its applicability and further reducing its cost of use. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural schematic diagram of a car wash machine according to a preferred embodiment of this application;

[0039] Figure 2 This is a three-dimensional structural diagram of a car wash machine according to a preferred embodiment of this application (with the battery pack removed);

[0040] Figure 3 This is a schematic diagram of the internal structure of a car wash machine according to a preferred embodiment of this application;

[0041] Figure 4 This is an exploded view of a car wash machine according to a preferred embodiment of this application;

[0042] Figure 5 This is a top view of a car wash machine according to a preferred embodiment of this application;

[0043] Figure 6 This is a preferred embodiment according to this application. Figure 5 A cross-sectional view along the AA direction;

[0044] Figure 7 This is a preferred embodiment according to this application. Figure 5 A cross-sectional view along the BB direction, with the body parts hidden;

[0045] Figure 8 This is a preferred embodiment according to this application. Figure 7 A schematic diagram showing the structure when the battery pack is ejected via the unlock button.

[0046] Figure 9 This is a preferred embodiment according to this application. Figure 7 A magnified view at point C;

[0047] Figure 10 This is a schematic diagram of the internal structure of the power supply component according to a preferred embodiment of this application;

[0048] Figure 11 This is a schematic diagram of the inner structure of the housing and housing base according to a preferred embodiment of this application;

[0049] Figure 12This is a schematic diagram of the outer structure of the housing and housing base according to a preferred embodiment of this application;

[0050] Figure 13 This is a three-dimensional structural diagram of the chamber according to a preferred embodiment of this application;

[0051] Figure 14 This is a three-dimensional structural schematic diagram of the first baffle according to a preferred embodiment of this application;

[0052] Figure 15 This is a three-dimensional structural diagram of the second baffle according to a preferred embodiment of this application;

[0053] Figure 16 This is a three-dimensional structural diagram of the shielding shell according to a preferred embodiment of the present application;

[0054] Figure 17 This is a three-dimensional structural diagram of the battery pack according to a preferred embodiment of this application;

[0055] Figure 18 This is a three-dimensional structural diagram of the unlock button according to a preferred embodiment of this application.

[0056] In the diagram: 100, Body; 101, Shaft Extension; 102, Handheld Part; 200, Power Supply Components; 1, Battery Compartment; 2, Battery Pack; 3, Unlock Button; 4, Housing; 5, Shielding Housing; 6, Water Inlet Connector; 7, Water Outlet Connector; 8, Electric Drive Assembly; 9, Controller; 10, Control Buttons; 1a, Receiving Cavity; 1b, Heat Dissipation Notch; 11, Housing Base; 12, Compartment; 13, First Baffle; 14, Second Baffle; 15, Electrical Contact; 111, Electrical Chamber; 112, Mechanical Chamber; 113, Limit Switch Frame; 114, Limiting block; 115, Slide groove; 121, Wedge buckle; 122, Ring groove; 123, Latch; 124, Separation gap; 125, Protrusion; 131, Snap ring; 141, Limiting groove; 21, Latch groove; 31, Push rod; 32, Reset spring; 33, Slider; 40, Housing component; 110, Housing base component; 50, Shielding housing component; 41, Slot; 42, Air inlet; 43, Air outlet; 51, Claw; 81, Motor; 82, Transmission component; 83, Pump body; 84, Cooling fan. Detailed Implementation

[0057] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0058] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0059] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0060] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0061] like Figures 1 to 17 As shown, a preferred embodiment of this application illustrates the specific structure of a car wash machine, which mainly comprises two parts: a body 100 and a power supply component 200. The body 100 has a washing function, and the power supply component 200 provides power to the body 100. The power supply component 200 can be used as a general-purpose component, attached to other power tools. The specific structure of the individual power supply component 200 is as follows:

[0062] like Figure 2 , Figures 7 to 9 As shown, the main structure of the power supply component 200 includes a battery compartment 1, a battery pack 2, and an unlock button 3; wherein the battery compartment 1 is located outside the body 100, and at least one receiving cavity 1a is formed on the battery compartment 1, and the battery pack 2 is detachably disposed within the receiving cavity 1a. Figure 2 The axial direction is defined by the extension of the XX line and its parallel lines. The battery pack 2 is adapted to slide in and out of the rear of the receiving cavity 1a along the axial direction. The corresponding unlock button 3 is movably disposed on the battery compartment 1, and the unlock button 3 is adapted to enter the head of the receiving cavity 1a along the axial direction and push the battery pack 2 out of the receiving cavity 1a. In this embodiment, the rear of the receiving cavity 1a refers to the end closer to the user, and the head of the receiving cavity 1a refers to the end farther away from the user.

[0063] The key points of the above structure are: (1) The external setting of the battery compartment 1 and the battery pack 2 avoids squeezing the limited internal space of the body 100 and increases the contact area between the battery compartment 1 and the battery pack 2 and the outside, which facilitates the heat dissipation of the battery pack 2; (2) The battery pack 2 and the unlock button 3 are set along the axis, which conforms to the user's intuitiveness, reduces the difficulty of loading and unloading the battery pack 2, improves the loading and unloading efficiency of the battery pack 2, and is easy to use; (3) Compared with the external battery pack structure, the battery pack 2 in this embodiment has higher versatility and can reduce the cost of use.

[0064] like Figures 1 to 10 As shown, to further enhance heat dissipation performance, a heat dissipation notch 1b is provided on the outer wall of the battery compartment 1. The heat dissipation notch 1b extends into the receiving cavity 1a, exposing the side wall of the battery pack 2. It can also be seen from the figure that the bottom of the battery compartment 1 in this embodiment is connected to the body 100, and the heat dissipation notch 1b is located at the top of the battery compartment 1.

[0065] like Figures 1 to 10 As shown, in this embodiment, there are two parallel receiving cavities 1a, and two corresponding battery packs 2. The series connection of the dual battery packs 2 can increase the voltage input, thereby increasing the output power of the power tool; the parallel connection of the dual battery packs 2 can extend the power tool's runtime; one configuration can be chosen based on the power tool's usage requirements.

[0066] like Figures 7 to 10 and Figure 18 As shown, in a specific structure, a push rod 31 extends from the unlock button 3. The push rod 31 is adapted to enter the receiving cavity 1a and abut against the battery pack 2. The unlock button 3 is slidably disposed within the battery compartment 1. A reset spring 32 is disposed between the unlock button 3 and the battery compartment 1. The reset spring 32 is adapted to force the push rod 31 away from the receiving cavity 1a. Correspondingly, in this embodiment, there are two push rods 31 arranged in parallel. Pressing the unlock button 3 is adapted to simultaneously push the two battery packs 2 out of the receiving cavity 1a through the two push rods 31. The parallel arrangement of the two battery packs 2 and the parallel arrangement of the two push rods 31 allows the two battery packs 2 to be pushed out simultaneously with a single pressing action, further facilitating the disassembly of the battery packs 2, especially the dual battery packs 2.

[0067] like Figures 4 to 15 As shown, the battery compartment 1 includes a housing 11, a compartment body 12, a first baffle 13, and a second baffle 14. The housing 11 has an electrical chamber 111 and a mechanical chamber 112 inside. A receiving cavity 1a is opened on the compartment body 12. The first baffle 13 is disposed between the electrical chamber 111 and the mechanical chamber 112. The second baffle 14 is disposed at the tail end of the electrical chamber 111. The first baffle 13 and the second baffle 14 are adapted to fix the compartment body 12 in the electrical chamber 111. The battery pack 2 is adapted to pass through the second baffle 14 and enter the receiving cavity 1a. The unlock button 3 is slidably disposed in the mechanical chamber 112. The unlock button 3 is adapted to pass through the first baffle 13 and enter the receiving cavity 1a.

[0068] Furthermore, a limiting frame 113 is provided on the inner wall of the housing 11 between the electrical chamber 111 and the mechanical chamber 112. A first baffle 13 is disposed within the limiting frame 113, the chamber 12 is fixedly mounted on the first baffle 13, and a second baffle 14 is fixedly mounted on the housing 11. The limiting frame 113 and the second baffle 14 cooperate to restrict the axial displacement of the chamber 12 together with the first baffle 13.

[0069] Furthermore, snap rings 131 extend from both sides of the first baffle 13, and wedge-shaped buckles 121 are provided on both sides of the compartment 12. The wedge-shaped buckles 121 are adapted to enter the snap rings 131 axially so that the compartment 12 is snapped and fixed on the first baffle 13. Limiting blocks 114 are provided vertically on both sides of the housing 11, and limiting grooves 141 are opened vertically on both sides of the second baffle 14. The limiting blocks 114 are adapted to enter the limiting grooves 141 vertically so that the second baffle 14 is snapped and fixed on the housing 11.

[0070] Furthermore, the inner wall of the housing 11 extends into the mechanical chamber 112 to form a groove 115, and sliders 33 are provided on both sides of the unlock button 3. The sliders 33 are adapted to slide along the axial direction in the groove 115 so that the unlock button 3 is slidably disposed in the mechanical chamber 112.

[0071] Furthermore, an electrical contact 15 is provided between the first baffle 13 and the compartment 12. One end of the electrical contact 15 extends into the receiving cavity 1a and is adapted to electrically connect to the battery pack 2. The other end of the electrical contact 15 extends into the mechanical chamber 112 and is adapted to electrically connect to the power supply line of the body 100. An annular groove 122 is provided on the end face of the compartment 12. The electrical contact 15 is fitted into the annular groove 122. The first baffle 13 is fixedly provided on the end face of the compartment 12 and restricts the electrical contact 15 from disengaging from the annular groove 122.

[0072] As can be seen from the above structure, the assembly of components in battery compartment 1 is mainly fixed by snap-fit ​​structure, without the need for fasteners such as bolts, which can effectively improve assembly efficiency and reduce overall cost.

[0073] As a positioning structure for battery pack 2, such as Figure 13 and Figure 17 As shown, a latch 123 is provided inside the compartment 12, and a latch groove 21 is provided on the outer wall of the battery pack 2. The latch 123 is adapted to move in and out of the latch groove 21 to lock or unlock the battery pack 2 and the compartment 12. Furthermore, the bottom of the compartment 12 is suspended, and the latch 123 is located at the bottom of the compartment 12. Separation gaps 124 are provided on both sides of the latch 123, which allow the latch 123 to deform vertically. Moreover, multiple protrusions 125 are provided axially on the inner wall of the compartment 12. The battery pack 2 abuts against the protrusions 125 and maintains a gap with the inner wall of the compartment 12 to achieve better heat dissipation and a smoother feel when installing and removing the battery pack 2.

[0074] The specific structure of battery pack 2 has been disclosed in the applicant's prior patent applications and will not be described in detail in this embodiment.

[0075] The following is a detailed description of the 100 parts of the car wash machine body:

[0076] like Figures 1 to 3 As shown, the car wash machine body 100 has a gun-shaped structure, consisting of a shaft extension 101 and a handle 102. The handle 102 is connected to the rear end of the shaft extension 101 and extends downward. Crucially, the power supply component 200 is positioned above the shaft extension 101, and the axial direction of the power supply component 200 is parallel to the length direction of the shaft extension 101. This installation position and orientation of the power supply component 200 makes the installation and removal of the battery pack 2 more intuitive and convenient.

[0077] like Figure 3 , Figure 4 , Figure 11 and Figure 12 As shown, the body 100 itself has a shell 4, which includes two shell parts 40. The two shell parts 40 are combined to form the shell 4. The battery compartment 1's housing 11 also has two housing parts 110, which are combined to form the housing 11. The two housing parts 110 are integrally formed on the two shell parts 40. The housing parts 110 and the shell parts 40 on both sides are suitable for fastening with fasteners (such as bolts, screws, etc., which are not shown in the figure). The integral molding design of the battery compartment 1 and the shell 4 simplifies the processing and assembly steps, reduces the overall cost, and increases the integrity of the car wash machine, ensuring structural strength.

[0078] Furthermore, the power supply component 200 is positioned near the rear end of the shaft extension 101, and the inlet / outlet end of the battery pack 2 is located at the rear end of the shaft extension 101, while the unlock button 3 is located at the front end of the shaft extension 101. For ergonomic reasons, the closer the center of gravity of the car wash machine is to the handheld part 102, the better the grip. Therefore, in this embodiment, the power supply component 200 needs to be positioned as far back as possible. Moreover, the battery pack 2 accounts for the largest weight within the power supply component 200, so it also needs to be positioned towards the rear end of the battery compartment 1. Based on this, the orientation of the power supply component 200 is limited, with the inlet / outlet end of the battery pack 2 positioned at the rear end of the shaft extension 101, while the unlock button 3, which has a smaller weight, is positioned at the front end of the shaft extension 101.

[0079] like Figures 1 to 4As shown, a shielding shell 5 is fixedly installed on the outer side of the housing 11 and the housing 4, covering the positions where fasteners pass through the housing 110 and the housing 40. The shielding shell 5 eliminates exposed fasteners, further enhancing the car wash machine's integrity and aesthetics. Similarly, the shielding shell 5 comprises two shielding shell parts 50, which are joined together to form the shielding shell 5. The two shielding shell parts 50 are respectively snapped and fixed onto the corresponding sides of the housing 110 and the housing 40. Specifically, as... Figure 16 As shown, multiple claws 51 extend from the inner wall of the shielding housing 50, such as... Figure 11 As shown, the outer walls of the housing 110 and the housing 40 are provided with a plurality of slots 41, and the claws 51 are adapted to enter the slots 41 so that the shielding housing 50 is fixed on the housing 110 and the housing 40.

[0080] In addition to the aforementioned improvements to the external structure, the body 100 of this embodiment also features a rational arrangement of its internal structure, mainly in the following aspects:

[0081] like Figures 1 to 6 As shown, a water inlet connector 6 is provided below the shaft extension 101, and a water outlet connector 7 is provided at the front end of the shaft extension 101. The above arrangement ensures that the water inlet connector 6 and the water outlet connector 7 are kept at a distance from the power supply component 200, which can effectively reduce the possibility of water entering the power supply component 200 and improve the safety of the car wash machine.

[0082] like Figures 3 to 6 As shown, as a standard configuration, the main body 100 houses an electric drive assembly 8 and a controller 9. The electric drive assembly 8 is positioned along the front-to-back direction within the shaft extension 101 and extends rearward into the handheld part 102. The controller 9 is also located within the handheld part 102. The partial placement of the tail end of the electric drive assembly 8 within the handheld part 102, along with the controller 9, effectively utilizes the limited space of the entire machine, shortening the length of the shaft extension 101 and making the overall design more compact. Furthermore, this structure shifts the overall center of gravity towards the handheld part 102. The electric drive assembly 8 includes a motor 81, a transmission component 82, and a pump body 83, arranged sequentially from rear to front. The rear end of the motor 81 enters the handheld part 102, the lower part of the pump body 83 is connected to a water inlet connector 6, and the front end of the pump body 83 is connected to a water outlet connector 7. Due to the significant weight of the motor 81, it is positioned rearward and partially overlaps with the battery pack 2 to meet ergonomic requirements.

[0083] like Figures 1 to 4As shown, the body 100 has an air inlet 42 near the water inlet connector 6, a cooling fan 84 is installed on the motor 81, and an air outlet 43 is located on the body 100 adjacent to the cooling fan 84. The motor 81 is the largest heat source of the entire machine, while the water inlet connector 6 is the overall cold source. The arrangement of the air inlet 42 and the air outlet 43 makes the heat circulation more complete, which is beneficial to the heat dissipation of the entire machine.

[0084] like Figures 1 to 4 As shown, the body 100 also includes a control button 10, which is located at the junction of the shaft extension 101 and the handheld part 102. The control button 10 is positioned high to prevent accidental activation.

[0085] It should be noted that the working principles of the car wash machine body 100 and the power supply component 200 are existing technologies, and therefore will not be specifically described in this embodiment. However, this does not prevent them from being implicit technical features of this application.

[0086] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A car washing machine comprising a power supply component for providing power to the car washing machine, characterised in that: The power supply components include a battery compartment, a battery pack, and an unlock button; The battery compartment is located outside the car wash machine, and the battery compartment has at least one receiving cavity; The battery pack is detachably disposed within the receiving cavity, and the battery pack is adapted to slide in and out of the receiving cavity axially from the tail end; The unlock button is movably disposed on the battery compartment, and the unlock button is adapted to enter the head of the receiving cavity axially and push the battery pack out of the receiving cavity; The car wash machine includes a shaft extension and a handheld part. The power supply component is located above the shaft extension, and the axial direction of the power supply component is parallel to the length direction of the shaft extension. A water inlet connector is provided below the shaft extension, and a water outlet connector is provided at the front end of the shaft extension. The handheld part is connected to the rear end of the shaft extension and extends downward. The power supply component is located near the rear end of the shaft extension, and the inlet and outlet of the battery pack are located at the rear end of the shaft extension, while the unlock button is located at the front end of the shaft extension.

2. The car washing machine according to claim 1, characterized in that: A heat dissipation notch is provided on the outer wall of the battery compartment, which extends into the receiving cavity and exposes the side wall of the battery pack.

3. The car wash machine according to claim 2, characterized in that: The bottom of the battery compartment is connected to the car wash machine, and the heat dissipation opening is located at the top of the battery compartment.

4. The car wash machine according to claim 1, characterized in that: The accommodating cavities are two arranged in parallel, and the battery packs are two arranged correspondingly.

5. The car wash machine according to claim 1, characterized in that: A push rod extends from the unlock button, the push rod is adapted to enter the receiving cavity and abut against the battery pack, the unlock button is slidably disposed in the battery compartment, and a reset spring is provided between the unlock button and the battery compartment, the reset spring is adapted to force the push rod away from the receiving cavity.

6. The car wash machine according to claim 5, characterized in that: The receiving cavities are two arranged in parallel, and the battery packs are two correspondingly arranged; the push rods are two arranged in parallel, and pressing the unlock button is adapted to simultaneously push the two battery packs out of the receiving cavities by the two push rods.

7. The car wash machine according to claim 1, characterized in that: The battery compartment includes a housing, a compartment body, a first baffle, and a second baffle. The housing has an electrical chamber and a mechanical chamber inside. The receiving cavity is opened on the compartment body. The first baffle is disposed between the electrical chamber and the mechanical chamber. The second baffle is disposed at the rear end of the electrical chamber. The first baffle and the second baffle are adapted to fix the compartment body in the electrical chamber. The battery pack is adapted to pass through the second baffle and enter the receiving cavity. The unlock button is slidably disposed in the mechanical chamber. The unlock button is adapted to pass through the first baffle and enter the receiving cavity.

8. The car wash machine according to claim 7, characterized in that: A limiting frame is provided on the inner wall of the housing between the electrical compartment and the mechanical compartment. The first baffle is disposed within the limiting frame. The compartment body is fixedly fastened to the first baffle, and the second baffle is fixedly fastened to the housing. The limiting frame and the second baffle cooperate to restrict the axial displacement of the compartment body together with the first baffle.

9. The car wash machine according to claim 8, characterized in that: The first baffle extends from both sides with snap rings, and the two sides of the compartment are provided with wedge-shaped buckles. The wedge-shaped buckles are adapted to enter the snap rings axially so that the compartment is snapped and fixed on the first baffle. The two sides of the housing are provided with limit blocks along the vertical direction, and the two sides of the second baffle are provided with limit grooves along the vertical direction. The limit blocks are adapted to enter the limit grooves vertically so that the second baffle is snapped and fixed on the housing.

10. The car wash machine according to claim 7, characterized in that: The inner wall of the housing extends into the mechanical chamber to form a groove, and sliders are provided on both sides of the unlock button. The sliders are adapted to slide along the axial direction in the groove so that the unlock button is slidably positioned in the mechanical chamber.

11. The car wash machine according to claim 7, characterized in that: An electrical contact is provided between the first baffle and the compartment body. One end of the electrical contact extends into the receiving cavity and is adapted to be electrically connected to the battery pack. The other end of the electrical contact extends into the mechanical chamber and is adapted to be electrically connected to the power supply line of the car wash machine. An annular groove is provided on the end face of the compartment body. The electrical contact is fitted into the annular groove. The first baffle is fixedly provided on the end face of the compartment body and restricts the electrical contact from disengaging from the annular groove.

12. The car wash machine according to claim 7, characterized in that: The compartment is equipped with a latch, and the outer wall of the battery pack is provided with a latch groove. The latch is adapted to move in and out of the latch groove so that the battery pack is locked or unlocked from the compartment.

13. The car wash machine according to claim 12, characterized in that: The bottom of the compartment is suspended, and the latch is located at the bottom of the compartment. Separation gaps are provided on both sides of the latch, which allow the latch to deform vertically.

14. The car wash machine according to claim 7, characterized in that: The inner wall of the compartment is provided with multiple protrusions along the axial direction, and the battery pack abuts against the protrusions and maintains a gap with the inner wall of the compartment.

15. The car wash machine according to claim 1, characterized in that: The car wash machine includes a housing, the battery compartment includes a housing base, the housing includes two housing parts, the two housing parts are merged to form the housing, the housing base includes two housing base parts, the two housing base parts are merged to form the housing base; the two housing base parts are integrally formed on the two housing parts respectively, and the housing base parts and the housing parts on both sides are adapted to be fixed by fasteners.

16. The car wash machine according to claim 15, characterized in that: A shielding shell is fixedly provided on the outer side of the housing and the housing base, and the shielding shell covers the positions on the housing base and the housing base where fasteners pass through.

17. The car wash machine according to claim 16, characterized in that: The shielding shell includes two shielding shell components, which are combined to form the shielding shell. The two shielding shell components are respectively snapped and fixed on the shell base component and the shell component on the corresponding side. Multiple claws extend from the inner wall of the shielding shell component, and multiple slots are opened on the outer walls of the shell base component and the shell component. The claws are adapted to enter the slots so that the shielding shell component is fixed on the shell base component and the shell component.

18. The car wash machine according to claim 1, characterized in that: The car wash machine is equipped with an electric drive assembly and a controller. The electric drive assembly is disposed in the shaft extension in the front-to-back direction and extends rearward into the handheld part. The controller is disposed in the handheld part.

19. The car wash machine according to claim 18, characterized in that: The electric drive assembly includes a motor, a transmission component, and a pump body arranged sequentially from back to front. The rear end of the motor enters the handheld part, the lower part of the pump body is connected to the water inlet connector, and the front end of the pump body is connected to the water outlet connector.

20. The car wash machine according to claim 19, characterized in that: The car wash machine has an air inlet near the water inlet connector, a cooling fan on the motor, and an air outlet next to the cooling fan.

21. The car wash machine according to claim 1, characterized in that: The car wash machine also includes control buttons, which are located at the junction of the shaft extension and the handheld part.

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