A wall-mounted high-pressure cleaning machine

Abstract

The present application relates to the technical field of high-pressure cleaning machine, especially to a wall-mounted high-pressure cleaning machine. It comprises a shell (1) with an inlet (2), a winding cylinder (3) rotatingly arranged in the shell (1), and a high-pressure water pipe (4) wound on the winding cylinder (3). The wall-mounted high-pressure cleaning machine further comprises a coil spring (5) for resetting the winding cylinder (3), a brake mechanism for controlling the stop of the winding cylinder (3), and a buffer mechanism for controlling the uniform rotation speed of the winding cylinder (3). The wall-mounted high-pressure cleaning machine has low cost.

Description

Technical Field

[0001] This invention relates to the field of high-pressure cleaner technology, and more particularly to a wall-mounted high-pressure cleaner. Background Technology

[0002] A high-pressure washer is a cleaning device that uses a high-pressure water conversion device (usually a high-pressure plunger pump) to pressurize water through several stages to a pressure of several hundred atmospheres or more, and then ejects it through a high-pressure water gun.

[0003] Most high-pressure washers are placed on the ground for use, but some high-pressure washers are mounted on the wall. These wall-mounted washers are called wall-mounted high-pressure washers.

[0004] Wall-mounted high-pressure washers are generally equipped with a winding drum, which is mainly used to store the high-pressure water hose. However, current technology mainly uses a motor to drive the winding drum to achieve the hose winding function. However, because motors are expensive, the overall cost of wall-mounted high-pressure washers with motors is higher, which makes them less competitive in the market. Summary of the Invention

[0005] The technical solution to be solved by the present invention is to provide a low-cost wall-mounted high-pressure cleaner.

[0006] The technical solution adopted in this invention is: a wall-mounted high-pressure washer, including a housing with an inlet, a rotating drum disposed in the housing, and a high-pressure water pipe wound on the drum. It also includes a coil spring for driving the drum to reset, a brake mechanism for controlling the drum to stop, and a buffer mechanism for controlling the drum speed to be uniform.

[0007] Preferably, the braking mechanism includes a labyrinth track disposed on one side of the cylinder and a sliding member rotatably connected to the housing and having one end extending into the labyrinth track. The labyrinth track includes at least two track assemblies evenly arranged along the circumference. Each track assembly includes an outer track, an inner track, and a receiving position. The outer tracks of adjacent track assemblies are connected, and the inner tracks of adjacent track assemblies are also connected. One end of the outer track is connected to the receiving position and the other end of the outer track of another track assembly. The other end of the outer track is connected to one end of the outer track of another track assembly. The middle part of the outer track is connected to the inner track. The receiving position is connected to the inner track. A first step is provided between one end of the outer track and the other end of the outer track of another track assembly to prevent the sliding member from sliding from one end of the outer track to the other end of the outer track of another track assembly. A second step is provided between one end of the outer track and the receiving position to prevent the sliding member from sliding from the receiving position to one end of the outer track. A third step is provided between the receiving position and the inner track to prevent the sliding member from sliding from the inner track to the receiving position. A fourth step is provided between the middle part of the outer track and the inner track to prevent the sliding member from sliding from the middle part of the outer track to the inner track.

[0008] Preferably, the third step and the receiving position are inclined to transition.

[0009] Preferably, the sliding member includes a sliding body, a rotating part disposed on one side of the sliding body for rotatably connecting to the housing, and a sliding head disposed on the other side of the sliding body for extending into the maze track. Furthermore, one side of the sliding body is provided with an elastic member for resisting the housing and thus preventing the sliding head from disengaging from the maze track.

[0010] Preferably, a receiving groove is provided on one side of the winding cylinder, the coil spring is disposed in the receiving groove, one end of the coil spring is fixed on the rotating shaft of the winding cylinder, the other end of the coil spring is fixed on the groove wall of the receiving groove, and the labyrinth track is covered on the receiving groove.

[0011] Preferably, a mounting bracket is fixed to the inner wall of the housing. The buffer mechanism includes a shaped turntable rotatably connected to one side of the mounting bracket and a buffer block rotatably connected to the other side of the mounting bracket. A rack is provided on the inner circumference of the cylinder, and a gear meshing with the rack is fixed on the shaft of the shaped turntable. A buffer groove composed of multiple arc-shaped sliding grooves is provided on the circumference of the shaped turntable. There are two buffer blocks, and each buffer block is provided with a buffer element for extending into the buffer groove. The mounting bracket is provided with a notch for the buffer element to pass through and swing. The buffer elements of the two buffer blocks extend into the buffer grooves on both sides of the shaped turntable.

[0012] When the cylinder rotates, it drives the irregularly shaped turntable to rotate. At this time, the two buffer heads will slide along the arc-shaped groove in the buffer groove, which in turn drives the two buffer blocks to swing left and right.

[0013] Preferably, the difference between the widest and narrowest part of the buffer groove is 5-7 mm.

[0014] Preferably, the buffer block is disc-shaped, and a columnar counterweight is provided below the buffer block.

[0015] Preferably, it also includes a winding device, which includes a bidirectional screw disposed inside the inlet and connected to the winding drum, a sliding mechanism for horizontal reciprocating sliding on the bidirectional screw in thread engagement with the bidirectional screw, and a guide member disposed on the sliding mechanism for guiding the high-pressure water pipe. The sliding mechanism includes a sliding component matched with the bidirectional screw and a limiting member for restricting the vertical rotation of the sliding component.

[0016] Preferably, the sliding component includes a slider, the upper surface of which is an arc surface that matches the bidirectional screw, and the arc surface is provided with a rib for embedding a threaded groove of the bidirectional screw. The limiting member includes a left stop and a right stop provided on the housing, and the left stop and the right stop, when combined, form a receiving cavity for accommodating the slider and allowing the slider to rotate horizontally.

[0017] Compared with the prior art, the present invention has the following advantages: the winding drum is reset by using a coil spring, which eliminates the need for a motor, greatly reducing costs. In addition, a braking mechanism is provided so that the winding drum can be stopped as needed. Furthermore, a buffer mechanism is provided so that the winding drum speed is more uniform when the coil spring is used to achieve winding, resulting in a better user experience.

[0018] Using this sliding component in conjunction with the maze track, during normal line winding, the sliding component is located within the inner track. Without external interference, the winding drum can continuously wind up the line under the action of the coil spring until the spring returns to its original position. If the user pulls the high-pressure water hose outwards during winding, the sliding component will pass through the fourth step and enter the outer track. If the user continues to pull the high-pressure water hose, the sliding component will slide on the outer track, allowing the user to easily pull out the hose. If the user releases the high-pressure water hose, the sliding component will pass through the second step and enter the receiving position, where it will be stuck and unable to move, effectively stopping the winding drum. If the user pulls the high-pressure water hose outwards again, the sliding component will pass through the third step and enter the inner track, returning to the normal winding state. This structure facilitates line winding, pulling, and stopping, offering convenient control, a simple structure, and low cost.

[0019] The third step is tilted to transition to the receiving position, so that the sliding part is not easy to move directly from the receiving position to the inner track without the action of external force, thus facilitating the stopping of the winding cylinder.

[0020] The slider with this structure can keep the slider head pressed against the track by the elastic element, and the position of the slider head can be freely adjusted according to the position of the maze track, resulting in high overall reliability.

[0021] Make a receiving groove on one side of the winding cylinder, then place the coil spring in the receiving groove, and use the labyrinth track as the cover of the receiving groove. This arrangement makes the overall structure more compact.

[0022] The buffer mechanism with this structure drives the irregularly shaped turntable to rotate when the drum rotates, which in turn drives the buffer groove on the circumference of the irregularly shaped turntable to rotate. This causes the buffer groove to squeeze the buffer component, making the buffer component swing left and right, which in turn causes the buffer block to swing left and right. This is equivalent to reducing the force on the drum by swinging the buffer block left and right, so that the winding speed of the drum under the action of the coil spring is reduced and tends to be stable, making it more comfortable for users.

[0023] Setting the buffer groove in this way provides better overall cushioning and minimizes noise.

[0024] The buffer block is made into a disc shape, and a counterweight is set below the buffer block. This makes the overall buffering effect better, and the weight of the counterweight can be adjusted according to the actual situation, making it more convenient and comfortable for users to use.

[0025] The double-acting screw and sliding mechanism work together to drive the guide to move back and forth, which in turn drives the high-pressure water pipe to move back and forth. This allows the high-pressure water pipe to be wound evenly onto the winding drum, resulting in uniform winding.

[0026] The sliding component with this structure is simple and can be well matched with the bidirectional screw. The limiting component with this structure can effectively limit the slider, that is, it can only rotate or move horizontally, but cannot rotate vertically. In this way, rotating the bidirectional screw can drive the slider to move horizontally back and forth. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a wall-mounted high-pressure cleaner according to the present invention.

[0028] Figure 2 This is a rear view of a wall-mounted high-pressure washer after the casing has been removed.

[0029] Figure 3 This is a left view of a wall-mounted high-pressure washer after the casing has been removed.

[0030] Figure 4 This is a right view of a wall-mounted high-pressure washer after the casing has been removed.

[0031] Figure 5 yes Figure 3 A schematic diagram of the structure after removing the mounting bracket.

[0032] Figure 6 yes Figure 5 A schematic diagram of the structure after removing the maze track and sliding parts.

[0033] Figure 7 This is a schematic diagram of the maze track.

[0034] Figure 8 This is a schematic diagram of the sliding component.

[0035] Figure 9 yes Figure 4 A schematic diagram of the structure after removing the mounting bracket.

[0036] Figure 10 This is a schematic diagram of the irregularly shaped turntable.

[0037] Figure 11 This is a schematic diagram of the mounting bracket for installing the buffer mechanism.

[0038] Figure 12 This is a schematic diagram of the winding device.

[0039] Figure 13 yes Figure 11 A schematic diagram of the structure after removing one of the side blocks.

[0040] Figure 14 This is a schematic diagram of the slider's structure.

[0041] The components are as follows: 1. Shell; 2. Inlet; 4. High-pressure water pipe; 5. Coil spring; 6. Maze track; 7. Sliding component; 8. Outer track; 9. Inner track; 10. Receiving position; 11. First step; 12. Second step; 13. Third step; 14. Fourth step; 15. Sliding body; 16. Rotating part; 17. Sliding head; 18. Elastic component; 19. Receiving groove; 20. Mounting bracket; 21. Irregular turntable; 22. Buffer block; 23. Rack; 24. Gear; 25. Buffer groove; 26. Buffer component; 27. Notch; 28. Counterweight; 29. ​​Bidirectional screw; 30. Slider; 31. Rib; 32. Left stop block; 33. Right stop block; 34. Receiving cavity. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] Example 1:

[0044] A wall-mounted high-pressure washer includes a housing 1 with a cable inlet 2, a mounting bracket 20 disposed within the housing 1, a winding drum rotatably connected within the housing 1, a high-pressure water pipe 4 wound around the winding drum, a braking mechanism disposed on the mounting bracket 20, and a buffer mechanism disposed on the mounting bracket 20, wherein:

[0045] Mounting bracket 20 is U-shaped and fixed to the inner wall of housing 1, including left side bracket, top bracket and right side bracket;

[0046] The winding cylinder includes a cylinder body and a rotating shaft. The rotating shaft is fixed on the mounting bracket 20, and the cylinder body is rotatably connected to the rotating shaft. The high-pressure water pipe 4 is wound around the cylinder body. A receiving groove 19 is provided on one side of the cylinder body, and a coil spring 5 is provided in the receiving groove 19. One end of the coil spring 5 is fixed to the rotating shaft, and the other end of the coil spring 5 is fixed to the inner wall of the cylinder body. In this way, when the user pulls the high-pressure water pipe 4, the cylinder body will rotate, thereby compressing the coil spring 5. When the user releases the high-pressure water pipe 4, the coil spring 5 will give the cylinder body a restoring force. A toothed rack 23 is provided on the other side of the winding cylinder.

[0047] The braking mechanism includes a maze track 6 and a sliding member 7. The maze track 6 is mounted on a plate that covers the receiving groove 19 and covers the coil spring 5. This plate can be removed for maintenance. The maze track 6 consists of two track assemblies evenly arranged around the circumference. Each track assembly includes an outer track 8, an inner track 9, and a receiving position 10. The outer tracks 8 of the two track assemblies are connected, and the inner tracks 9 of the two track assemblies are also connected, forming a complete circular track. The two outer tracks 8 and the two inner tracks 9 also form a complete circular track. One end of the outer track 8 is connected to the receiving position 10 and the other end of the other outer track 8, and the other end of the outer track 8 is connected to one end of the other outer track 8. The outer track 8 is connected to the inner track 9 in the middle, and the receiving position 10 is connected to the inner track 9. A first step 11 is provided between one end of the outer track 8 and the other end of the other outer track 8 to prevent the sliding member 7 from sliding from one end of the outer track 8 to the other end of the other outer track 8. A second step 12 is provided between one end of the outer track 8 and the receiving position 10 to prevent the sliding member 7 from sliding from the receiving position 10 to one end of the outer track 8. A third step 13 is provided between the receiving position 10 and the inner track 9 to prevent the sliding member 7 from sliding from the inner track 9 to the receiving position 10, and the third step 13 is inclined to the receiving position 10. A fourth step 14 is provided between the middle of the outer track 8 and the inner track 9 to prevent the sliding member 7 from sliding from the middle of the outer track 8 to the inner track 9.

[0048] The sliding member 7 includes a sliding body 15, a rotating part 16, a sliding head 17, and an elastic member 18. The rotating part 16 and the elastic member 18 are located at both ends on one side of the sliding body 15. The rotating part 16 is rotatably connected to the left side frame of the mounting bracket 20. One end of the elastic member 18 is fixed to the sliding body 15, and the other end of the elastic member 18 abuts against the left side frame. The sliding head 17 is located on the other side of the sliding body 15, and the elastic member 18 and the sliding head 17 are arranged opposite to each other. In this way, the elastic force of the elastic member 18 can hold the sliding head 17 against the maze track 6.

[0049] The working principle of the braking mechanism is as follows: During normal cable winding, the sliding member 7 is located within the inner track 9. Without external interference, the winding drum can continuously wind the cable under the action of the coil spring 5, meaning the sliding member 7 will continuously slide along the inner track 9 until the coil spring 5 resets. If the user pulls the high-pressure water pipe 4 outwards during the winding process, this is equivalent to the winding drum reversing, causing the sliding member 7 to also reverse. The sliding member 7 will then pass through the fourth step 14 and enter the outer track 8. If the user continues to pull the high-pressure water pipe 4, the sliding member 7 will slide along the outer track 8, allowing the user to easily pull out the high-pressure water pipe 4. If the user releases the high-pressure water pipe 4 at this point, the sliding member... 7 will pass through the second step 12 and enter the receiving position 10. At this time, the sliding member 7 will be stuck in the receiving position 10 and cannot move, which is equivalent to stopping the winding. If the user pulls the high-pressure water pipe 4 outward at this time, the sliding member 7 will pass through the third step 13 and enter the inner track 9, returning to the normal winding state. That is, the pull-type sliding member 7 will be in the outer track 8, the sliding member 7 will be in the inner track 9 during normal winding, and the sliding member 7 will be in the receiving position 10 when stopped. Then, the user can control it by pulling the high-pressure water pipe 4. It is equivalent to the user adjusting the state of the device by gently pulling the high-pressure water pipe 4, changing from the winding state to the stopped state and then back to the winding state.

[0050] The buffer mechanism includes an irregularly shaped turntable 21 and a buffer block 22, wherein:

[0051] The irregular turntable 21 is rotatably connected to the right frame. Its edge includes a buffer groove 25 composed of eight arc grooves, and a gear 24 is fixed on its rotating shaft. This gear 24 meshes with the rack 23 on the winding cylinder. When the winding cylinder rotates, it can drive the gear 24 to rotate, thereby driving the irregular turntable 21 to rotate.

[0052] There are two buffer blocks 22, which are rotatably connected to the right side frame respectively. The rotation axes of the two buffer blocks 22 are located on both sides of the rotation axis of the irregular turntable. A buffer element 26 is provided on the buffer block 22, and a notch 27 is provided on the right side frame for the two buffer elements 26 to pass through and swing. The buffer element 26 can pass through the notch 27 and extend into the buffer groove 25 on the edge of the irregular turntable. The size of the buffer element 26 matches the size of the buffer groove 25.

[0053] The working principle of the buffer mechanism is as follows: When the coil spring 5 drives the winding drum to rotate, it will simultaneously drive the irregular turntable 21 to rotate. At this time, the buffer groove 25 on the irregular turntable 21 will also rotate together, which will collide with the buffer member 26 that extends into the buffer groove 25. This will cause the buffer member 26 to move along the buffer groove 25. Since the buffer groove 25 is composed of multiple arc grooves, the sliding of the buffer member 26 in the buffer groove 25 is equivalent to the buffer member 26 swinging left and right. This will also cause the buffer block 22 to swing left and right. Since the buffer block 22 itself has a certain weight, when the buffer block 22 swings left and right, it will reduce the rotation speed of the irregular turntable 21, thereby reducing the rotation speed of the winding drum. This makes the rotation speed of the winding drum tend to be stable, so that the winding drum rotation speed is not too fast when winding the line, making it more comfortable for the user.

[0054] Example 2:

[0055] The difference from Embodiment 1 is that Embodiment 2 also includes a winding device at the inlet 2 for evenly winding the high-pressure water pipe 4 onto the drum. The winding device includes a bidirectional screw 29 and a sliding mechanism, wherein:

[0056] The bidirectional screw 29 is rotatably connected inside the housing 1 and has a bidirectional threaded groove. One end of the screw is connected to the winding cylinder via a transmission belt, so that the bidirectional screw 29 can be driven to rotate when the winding cylinder rotates.

[0057] The sliding mechanism includes a sliding component and a limiting component, wherein:

[0058] The sliding component includes a slider 30, the main body of which is cylindrical, with a limiting retaining ring at the bottom and an arc surface at the top, and an arc-shaped protrusion 31 on the arc surface. The arc-shaped protrusion 31 can be embedded into the threaded groove of the bidirectional screw 29.

[0059] The limiting component includes a left stop block 32 and a right stop block 33. After the left stop block 32 and the right stop block 33 are combined, a receiving cavity 34 is formed below to accommodate the slider 30. The lower part of the receiving cavity 34 matches the limiting stop ring of the slider 30 with a limiting groove. This ensures that the slider 30 cannot move vertically in the receiving cavity 34. After the left stop block 32 and the right stop block 33 are combined, there is a gap at the top for the installation of guide components.

[0060] The guide component includes two guide wheels, which are set in the gap of the limiting component, and a gap is provided between the two guide wheels for the high-pressure water pipe 4 to pass through.

[0061] The working principle of this embodiment is as follows: When the winding cylinder rotates, it drives the bidirectional screw 29 to rotate via the transmission belt. Since the slider 30 is attached to the bidirectional screw 29 and its protruding rib 31 is embedded in the thread groove, and since the slider 30 is vertically limited by the left and right stops 33, the slider 30 can only move horizontally with the thread groove. When it moves to one end of the bidirectional screw 29, the slider 30 will rotate horizontally at a certain angle within the receiving groove 19. This allows the protruding rib 31 on the slider 30 to move from one direction of the thread groove to the other direction. Afterward, when the bidirectional screw 29 continues to rotate, it will drive the slider 30 to move horizontally back. This is equivalent to controlling the rotation of the bidirectional screw 29 to drive the slider 30 to move horizontally back and forth. Since the high-pressure water pipe 4 passes through the gap between the left and right stops and is guided by the two guide wheels, the high-pressure water pipe 4 will also move left and right with the slider 30, resulting in more uniform winding.

[0062] Example 3:

[0063] The difference from Embodiment 1 is that in Embodiment 3, a counterweight 28 can be detachably connected to the bottom of the buffer block 22. This allows for the selection of a suitable weight of counterweight 28 as needed, resulting in a better buffering effect. In this embodiment, the weight of the buffer block 22 is 400g, and the weight of the counterweight 28 is 100g.

[0064] Example 4:

[0065] The difference from Embodiment 1 is that in Embodiment 4, the difference between the widest and narrowest part of the buffer groove 25 is between 5-7mm, and the width of the buffer member 26 is smaller than the width of the narrowest part of the groove. In normal state, the buffer member 26 is attached to the inner wall of the buffer groove 25, so that the buffer member 26 will move immediately when the buffer groove 25 moves.

[0066] Example 5:

[0067] The difference from Embodiment 2 is that in Embodiment 5, an anti-collision roller is also provided on the lower side of the inlet 2, and an anti-collision pad is fitted on the anti-collision roller. This is because the high-pressure water pipe 4 will rub against the lower side of the inlet 2 during normal cable winding and unwinding. With the addition of this anti-collision roller, the cable winding and unwinding will drive the anti-collision roller to rotate, thereby reducing friction and making the high-pressure water pipe 4 less prone to damage.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0069] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be construed as covering all changes and modifications that encompass the true intent and scope of the invention. Any and all equivalent scope and content within the scope of the claims should be considered to remain within the intent and scope of the invention.

Claims

1. A wall-mounted high-pressure washer, comprising a housing (1) with a cable inlet (2), a drum rotatably disposed within the housing (1), and a high-pressure water pipe (4) wound around the drum, characterized in that: It also includes a coil spring (5) for driving the winding cylinder to reset, a brake mechanism for controlling the winding cylinder to stop, and a buffer mechanism for controlling the winding cylinder speed to be uniform. The braking mechanism includes a maze track (6) disposed on one side of the winding cylinder and a sliding member (7) rotatably connected to the housing (1) and having one end extending into the maze track (6). The maze track (6) includes at least two track assemblies evenly arranged along the circumference. Each track assembly includes an outer track (8), an inner track (9), and a receiving position (10). The outer tracks (8) of adjacent track assemblies are connected, and the inner tracks (9) of adjacent track assemblies are also connected. One end of the outer track (8) is connected to the receiving position (10) and the other end of the outer track (8) of another track assembly. The other end of the outer track (8) is connected to one end of the outer track (8) of another track assembly. The middle part of the outer track (8) is connected to the inner track (9). The receiving position (10) is connected to the inner track (9). A first step (11) is provided between one end of the outer track (8) and the other end of the outer track (8) of another track assembly to prevent the sliding member (7) from sliding from one end of the outer track (8) to the other end of the outer track (8) of another track assembly. A second step (12) is provided between one end of the outer track (8) and the receiving position (10) to prevent the sliding member (7) from sliding from the receiving position (10) to one end of the outer track (8). A third step (13) is provided between the receiving position (10) and the inner track (9) to prevent the sliding member (7) from sliding from the inner track (9) to the receiving position (10). A fourth step (14) is provided between the middle of the outer track (8) and the inner track (9) to prevent the sliding member (7) from sliding from the middle of the outer track (8) to the inner track (9). The third step (13) and the receiving position (10) are inclined to transition; A receiving groove (19) is provided on one side of the winding cylinder, and the coil spring (5) is provided in the receiving groove (19). One end of the coil spring (5) is fixed on the rotating shaft of the winding cylinder, and the other end of the coil spring (5) is fixed on the groove wall of the receiving groove (19). The maze track (6) is covered on the receiving groove (19). A mounting bracket (20) is fixed on the inner wall of the housing (1). The buffer mechanism includes a shaped turntable (21) rotatably connected to one side of the mounting bracket (20) and a buffer block (22) rotatably connected to the other side of the mounting bracket (20). A rack (23) is provided on the inner circumference of the cylinder, and a gear (24) meshing with the rack (23) is fixed on the rotating shaft of the shaped turntable (21). A buffer groove (25) composed of multiple arc-shaped sliding grooves is provided on the circumference of the shaped turntable (21). There are two buffer blocks (22), and each buffer block (22) is provided with a buffer element (26) for extending into the buffer groove (25). The mounting bracket (20) is provided with a notch (27) for the buffer element (26) to pass through and swing. The buffer elements (26) of the two buffer blocks (22) extend into the buffer grooves (25) on both sides of the shaped turntable (21). When the cylinder rotates, it drives the irregular turntable (21) to rotate. At this time, the two buffer heads will slide along the arc-shaped slide in the buffer groove (25), thereby driving the two buffer blocks (22) to swing left and right. The difference between the widest and narrowest part of the buffer groove (25) is 5-7 mm.

2. The wall-mounted high-pressure washer according to claim 1, characterized in that: The sliding member (7) includes a sliding body (15), a rotating part (16) disposed on one side of the sliding body (15) for rotatably connecting to the housing (1), and a sliding head (17) disposed on the other side of the sliding body (15) for extending into the maze track (6). An elastic member (18) is also provided on one side of the sliding body (15) for resisting the housing (1) and thus preventing the sliding head (17) from disengaging from the maze track (6).

3. A wall-mounted high-pressure washer according to claim 1, characterized in that: The buffer block (22) is disc-shaped, and a columnar counterweight (28) is also provided under the buffer block (22).

4. A wall-mounted high-pressure washer according to claim 1, characterized in that: It also includes a winding device, which includes a bidirectional screw (29) disposed inside the inlet (2) and connected to the winding drum, a sliding mechanism for horizontally reciprocating sliding on the bidirectional screw (29) in thread engagement with the bidirectional screw (29), and a guide member disposed on the sliding mechanism for guiding the high-pressure water pipe (4). The sliding mechanism includes a sliding component matched with the bidirectional screw (29) and a limiting member for restricting the vertical rotation of the sliding component.

5. A wall-mounted high-pressure washer according to claim 4, characterized in that: The sliding assembly includes a slider (30), the upper surface of which is an arc surface that matches the bidirectional screw (29), and the arc surface is provided with a rib (31) for embedding the threaded groove of the bidirectional screw (29). The limiting member includes a left stop (32) and a right stop (33) provided on the outer shell, and the left stop (32) and the right stop (33) together form a receiving cavity (34) for accommodating the slider (30) and allowing the slider (30) to rotate horizontally.

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