Handheld car washer

Abstract

The utility model discloses a handheld car washing machine which comprises a machine body and a holding handle arranged on the machine body and used for being held by a user, a water outlet is formed in one end of the machine body in the length direction, and a water inlet connector distributed in the length direction of the holding handle is arranged at the position, close to the holding handle, of the machine body. The side, opposite to the holding handle, of the machine body is externally connected with a battery bin, a groove with the same shape as the bottom face of the battery bin is formed in the machine body, the battery bin is located on the side, away from the water inlet connector, of the machine body, and a motor electrically connected with the battery bin is arranged in the machine body. A waterproof pad is arranged at the electrical connection position of the battery bin, the power output end of the motor is connected with a pump assembly, and the pump assembly is located at the position, close to the water inlet connector, in the machine body and communicates with the water outlet. The utility model has the advantage of realizing physical isolation of water and electricity circuits so as to eliminate potential safety hazards caused by water seepage.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-pressure cleaning equipment, and in particular relates to a handheld car wash machine. Background Technology

[0002] Handheld car wash machines use an external water source, pressurize it with a pump, and then spray the pressurized water onto the vehicle surface to clean and maintain it. They allow for convenient and effective control of the water flow, are flexible in operation, and have a wide range of applications.

[0003] Chinese patent application No. 202022445811.6 discloses a cordless car wash gun, including a housing, a motor installed in the housing, a pump assembly driven by the motor, a grip connected to the rear end of the housing, a battery pack, and an inlet and an outlet connected to the pump assembly. The motor is powered by the battery pack and drives the pump assembly to draw in external water from the inlet, pressurize it, and spray it out from the outlet. The cordless car wash gun includes a transverse axis extending horizontally and a longitudinal axis perpendicular to the transverse axis. The pump assembly extends substantially along the transverse axis, the motor extends substantially along the longitudinal axis, the grip protrudes downward from the rear end of the housing, and the battery pack is located at the upper end of the grip.

[0004] In the above technical solution, the motor is arranged along the longitudinal axis of the entire gun on the side of the handle near the water outlet of the entire gun. However, in the actual installation of the car wash machine, mechanical gaps or assembly gaps are inevitably generated. Since the motor is located on the side of the handle near the water outlet of the entire gun, the motor is close to the pump assembly used to generate negative pressure. Changes in the internal pressure or thermal expansion and contraction can easily cause the aforementioned mechanical gaps or assembly gaps to widen after long-term use. Because the car wash gun in the above technical solution adopts a direct connection layout without buffer, liquid can easily penetrate through the mechanical gaps or assembly gaps and enter the motor. Physical isolation of the water circuit cannot be achieved, which poses a safety hazard. Summary of the Invention

[0005] To address the shortcomings of existing technologies, a handheld car wash machine is provided.

[0006] This utility model is achieved using the following technical solution:

[0007] A handheld car wash machine includes a body and a handle on the body for a user to hold. One end of the body along its length is a water outlet. A water inlet is located on the body near the handle, extending along the length of the handle. A battery compartment is externally connected to the side of the body opposite the handle. A groove with the same shape as the bottom surface of the battery compartment is formed on the body. The battery compartment is located on the upper part of the body, relatively away from the water inlet. A motor electrically connected to the battery compartment is located inside the body. A waterproof gasket is provided at the electrical connection point of the battery compartment. A pump assembly is connected to the power output end of the motor. The pump assembly is located inside the body near the water inlet and communicates with the water outlet.

[0008] When cleaning is needed, hold the handle and start the motor. The motor converts the electrical energy in the battery compartment into mechanical energy and makes the pump assembly work. The pump assembly draws water through the water inlet and sprays the water out at high pressure through the water outlet. At this time, the user can move the machine body according to the part to be cleaned.

[0009] The pump assembly can be any existing water pump assembly capable of drawing water from the inlet connector and ejecting it at high pressure through the outlet.

[0010] By setting a groove with the same shape as the bottom surface of the battery compartment, it is easier to align and install the battery compartment with the outer surface of the body, thus reducing the installation difficulty in the external assembly process of the battery compartment.

[0011] This invention constructs the first line of defense against water leakage by placing the motor along the length of the machine body and positioning it relatively far from the water inlet connector. This blocks the path of liquid propagation from the pump assembly to the motor due to leakage between the pump assembly and the water inlet connector. Furthermore, by independently mounting the battery compartment externally and placing a waterproof pad at the electrical connection of the battery compartment, water penetration into the battery compartment is prevented, thus extending the service life of the battery compartment.

[0012] Preferably, the battery compartment includes a battery holder and a top cover. The battery holder is used to load segmented batteries. An electrical connection interface is provided between the battery holder and the body. Fixing members for fastening the battery holder to the body are arranged in an array near the electrical connection interface.

[0013] After aligning the battery holder with the inner wall of the groove using the fastener, tighten the fastener while it passes through the waterproof gasket to ensure absolute contact between the waterproof gasket and the electrical connection of the battery compartment, thus guaranteeing the sealing performance of the waterproof gasket.

[0014] The fasteners can be existing connectors used to fix the battery holder and the body, such as screws and bolts.

[0015] Preferably, the waterproof pad covers the electrical connection interface, and the waterproof pad has a first through hole for the fastener to pass through and a second through hole for the electrical connection interface to pass through.

[0016] By pre-drilling a first through hole and a second through hole on the waterproof pad that are compatible with the size of the fastener and the electrical connection interface, it is easy to install the pad while installing the battery holder. The second through hole makes the waterproof pad form a labyrinth-like sealing structure, ensuring an absolute fit between the waterproof pad and the electrical connection of the battery compartment. This ensures that the waterproof pad isolates the battery holder from the electrical connection interface, preventing water from seeping into the battery compartment.

[0017] Preferably, the rear of the battery compartment is provided with a charging interface for charging the segmented batteries, thereby facilitating the reuse of the car wash machine.

[0018] Preferably, the motor is located inside the body directly opposite the grip handle.

[0019] By adjusting the position of the motor so that its center of gravity coincides with the handle, it becomes easier for users to apply force to the car wash machine when holding it, thus reducing the difficulty of keeping the car wash machine level.

[0020] Preferably, the angle between the handle and the radial direction of the machine body is less than 90 degrees, so that the handle is set in an ergonomic force direction, making it convenient for users to hold the car wash machine.

[0021] Preferably, the handle is equipped with a button for controlling the water flow from the outlet, thereby facilitating water conservation during car washing.

[0022] Preferably, the water outlet is detachably connected to a water outlet connector, which facilitates changing the water spray direction and the shape of the water column after spraying.

[0023] Preferably, the rear of the machine body is provided with a display device and a switch electrically connected to the battery compartment, so that the user can easily control the remaining power of the car wash machine and the time that can be used, and facilitate the user to use the car wash machine repeatedly.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] The motor is positioned far behind the pump assembly along the length of the machine body, creating a physical isolation zone between the water inlet connector and the motor. This forms the first-level barrier to the conduction of liquid media. The battery compartment adopts an external independent cavity structure, and its electrical connection interface is equipped with a labyrinth-sealed waterproof gasket to eliminate the seepage channel for liquid to enter along the electrode contacts. This fundamentally suppresses the risk of electrolytic corrosion and has the advantage of achieving physical isolation between the water circuit and the electrical circuit, thereby eliminating safety hazards caused by water seepage. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a handheld car wash machine according to the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the exploded structure;

[0028] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the battery compartment in this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the waterproof pad in this utility model;

[0031] Figure 6 This is a schematic diagram of the rear view structure of this utility model.

[0032] Reference numerals: 11. Body; 111. Countersunk groove; 12. Water outlet; 13. Shower head; 14. Handle; 15. Button; 16. Battery compartment; 161. Battery holder; 162. Top cover; 17. Segmented battery; 18. Electrical connection interface; 19. Waterproof pad; 191. First through hole; 192. Second through hole; 1921. Leakage seam; 20. Fastening bolt; 21. Motor; 22. Pump assembly; 221. Planetary transmission unit; 222. Negative pressure unit; 23. Water inlet connector; 24. Charging interface; 25. Display device; 26. Switch. Detailed Implementation

[0033] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1 As shown, this embodiment discloses a handheld car wash machine, including a body 11. One end of the body 11 in the length direction is a water outlet 12. A water outlet connector is connected to the water outlet 12 by a thread. The water outlet connector is an existing water spray head 13 used to change the shape and angle of the water jet from the water outlet 12.

[0035] The lower end of the body 11 near the tail is provided with a grip handle 14 for the user to hold. The angle between the grip handle 14 and the radial direction of the body 11 is less than 90 degrees. The grip handle 14 is provided with a button 15 for controlling the water flow of the water outlet 12.

[0036] The body 11 is provided with a water inlet connector 23 arranged along the length of the handle 14 near the handle 14. The water inlet connector 23 is used to connect to an external water source and is located between the handle 14 and the shower head 13.

[0037] like Figure 2As shown, a countersunk groove 111 is provided on the upper part of the body 11 on the side facing away from the handle 14. A battery compartment 16 is connected to the body 11 through the countersunk groove 111. When the user holds the handle 14, the battery compartment 16 is located on the upper back side of the body 11, and is located relatively far away from the water inlet connector 23. A motor 21 electrically connected to the battery compartment 16 is provided inside the body 11. The motor 21 is located inside the body 11 directly opposite the handle 14. A waterproof pad 19 is provided at the electrical connection of the battery compartment 16. The motor 21 is arranged along the length of the body 11 and its own power output end is connected to a pump assembly 22. The pump assembly 22 is located inside the body 11 near the water inlet connector 23 and is connected to the water outlet 12.

[0038] like Figure 3 As shown, the pump assembly 22 is an existing water pump assembly 22 capable of drawing water from the water source connected to the water inlet connector 23 and ejecting it at high pressure through the water outlet 12. The pump assembly 22 includes a planetary transmission part 221 for connecting to the power output end of the motor 21 and a negative pressure part 222 connected to the water inlet connector 23.

[0039] The battery compartment 16 includes a battery holder 161 that is tightly fitted in a countersunk groove 111 and an upper cover 162 that is fastened to the top of the battery holder 161. The battery holder 161 is used to hold segmented batteries 17. An electrical connection interface 18 is provided between the battery holder 161 and the body 11. Near the electrical connection interface 18, fasteners for fastening the battery holder 161 and the body 11 are arranged in an array. The fasteners are fastening bolts 20.

[0040] like Figure 4 , Figure 5 As shown, the waterproof pad 19 is wrapped around the electrical connection interface 18. The waterproof pad 19 has a first through hole 191 for the fastening bolt 20 to pass through and a second through hole 192 for the electrical connection interface 18 to pass through. The second through hole 192 is a trapezoidal enclosure structure. The top of the trapezoidal enclosure structure has a slit 1921 for the electrical connection interface 18 to pass through. When the waterproof pad 19 is fitted onto the electrical connection interface 18, the fastening bolt 20 passes through the first through hole 191, and the electrical connection interface 18 passes through the slit 1921 on the second through hole 192. This makes the waterproof pad 19 form a labyrinthine sealing structure, thereby ensuring absolute fit between the waterproof pad 19 and the electrical connection of the battery compartment 16, so as to achieve physical isolation of the water circuit.

[0041] like Figure 6 As shown, the battery compartment 16 is provided with a charging interface 24 for charging the segmented battery 17 at the rear; the body 11 is provided with a display device 25 and a switch 26 electrically connected to the battery compartment 16 at the rear. The display device 25 is any existing electronic screen that can be electrically connected to the battery compartment 16 and provide feedback on the remaining power of the battery compartment 16.

[0042] When the user needs to clean, they hold the handle 14 and start the motor 21. The segmented battery 17 provides power to the motor 21. The motor 21 converts the electrical energy of the battery compartment 16 into mechanical energy and transmits the power to the planetary transmission part 221 of the pump assembly 22. The planetary transmission part 221 draws in the external water source connected to the water inlet connector 23 through the negative pressure part 222 and sprays the water out at high pressure through the water outlet 12. The water flows through the water spray head 13 and thus becomes the shape required by the user for cleaning. At this time, the user can move the machine body 11 according to the part to be cleaned.

Claims

1. A handheld car wash machine, comprising a body and a handle disposed on the body for a user to hold, wherein one end of the body along its length is a water outlet, and a water inlet connector is provided on the body near the handle, extending along the length of the handle, characterized in that: A battery compartment is externally connected to the side of the body opposite to the handle. A groove with the same shape as the bottom surface of the battery compartment is formed on the body. The battery compartment is located on the upper part of the body, relatively far away from the water inlet connector. A motor electrically connected to the battery compartment is installed inside the body. A waterproof gasket is provided at the electrical connection point of the battery compartment. A pump assembly is connected to the power output end of the motor. The pump assembly is located inside the body near the water inlet connector and is connected to the water outlet.

2. The handheld car wash machine according to claim 1, characterized in that: The battery compartment includes a battery holder and a top cover. The battery holder is used to load segmented batteries. An electrical connection interface is provided between the battery holder and the body. Fixing members for fastening the battery holder to the body are arranged in an array near the electrical connection interface.

3. A handheld car wash machine according to claim 2, characterized in that: The waterproof pad is wrapped around the electrical connection interface, and the waterproof pad has a first through hole for the fastener to pass through and a second through hole for the electrical connection interface to pass through.

4. A handheld car wash machine according to claim 1, 2, or 3, characterized in that: The battery compartment is equipped with a charging port at the rear for charging segmented batteries.

5. A handheld car wash machine according to claim 4, characterized in that: The motor is located inside the body, directly opposite the grip handle.

6. A handheld car wash machine according to claim 5, characterized in that: The angle between the grip handle and the radial direction of the machine body is less than 90 degrees.

7. A handheld car wash machine according to claim 6, characterized in that: The handle is equipped with a button for controlling the water flow from the outlet.

8. A handheld car wash machine according to claim 1, characterized in that: A water outlet connector is detachably connected to the water outlet.

9. A handheld car wash machine according to claim 1, characterized in that: The tail of the machine body is equipped with a display device and a switch electrically connected to the battery compartment.

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