A hinge head assembly and cleaning tool

Abstract

The utility model discloses a hinge head assembly and cleaning tool. Hinge head assembly is used to connect cleaning head and connecting rod assembly, including water pump, hinge head electric connection plug, hinge head upper shell and hinge head lower shell, the upper portion of hinge head upper shell is detachable and is connected with connecting rod assembly, and the bottom of hinge head upper shell is inserted in the top opening of hinge head lower shell, water pump is built -in in hinge head upper shell, is used for delivering clean water to the surface of the cleaning roller of cleaning head, hinge head electric connection plug is built -in in hinge head upper shell, and is located the upper end of water pump, is electrically connected with water pump and the lower electric connection plug of connecting rod assembly respectively, hinge head lower shell is inserted into the rear end middle section of cleaning head, and articulates cleaning head, the lower end of hinge head lower shell is provided with first opening and second opening. The hinge head assembly realizes water circuit separation, prevents the short circuit caused by the leakage of hinge head assembly inside, and greatly improves the use safety and service life.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a hinge head assembly and a cleaning tool. Background Technology

[0002] With the advancement of technology, people's requirements for floor cleaning tools have gradually increased. The first to emerge was the vacuum cleaner, which relies on electricity and generates negative pressure to suck up trash and dust from the floor. Classified by cleaning methods and the flow path of small and large particles of debris, this type of technology is generally categorized as air-dust circulation technology. However, due to the limitations of its working principle, vacuum cleaners cannot clean some trash and stains that are firmly attached to the floor. Therefore, a new type of floor cleaner, the "water-dust circulation" scrubber, has emerged. This scrubber uses a motor to drive a cleaning drum to wipe the floor, and it is also equipped with a water supply system and a water tank to clean the cleaning drum, thus perfectly cleaning the floor.

[0003] In existing technologies, floor scrubbers using the "water and dust circulation" technology all employ hinge devices to connect the mop head and the upright. However, the hinge device simultaneously carries both electrical and water circuits upwards and downwards. This means that when the hinge device connects upwards to the upright, it is necessary to ensure a reliable connection between the water circuit and the electrical circuit. This can easily lead to short circuits in the electrical connection due to "water leakage." Therefore, it is necessary to find a technical solution to improve this problem and reduce the assembly difficulty for first-time users of modular floor scrubbers. Utility Model Content

[0004] In order to enrich the product range of cleaning tools and hinge head assemblies used in cleaning tools, and to improve the user's home cleaning experience, this utility model provides a hinge head assembly and a cleaning tool.

[0005] In a first aspect, this utility model provides a hinge head assembly for connecting a cleaning head and a connecting rod assembly, including a water pump, a hinge head electrical connection plug, a hinge head upper shell, and a hinge head lower shell; The upper part of the hinge head shell is detachably snapped into the connecting rod assembly, and the bottom of the hinge head shell is inserted into the top opening of the hinge head lower shell. The water pump is built into the housing of the hinge head and is used to deliver clean water to the surface of the cleaning roller of the cleaning head. The hinge head electrical connector is built into the hinge head shell and located at the upper end of the water pump, and is electrically connected to the lower electrical connector of the water pump and the connecting rod assembly respectively. The hinge head lower shell is inserted into the middle of the rear end of the cleaning head and hinges the cleaning head. The lower end of the hinge head housing is symmetrically provided with a first opening and a second opening. The first opening is for the water pump's inlet and outlet pipes to pass through, and the second opening is for the wires connected to the hinge head electrical connector to pass through. The wires connected to the hinge head electrical connector are connected to the cleaning roller drive motor inside the cleaning head.

[0006] In one or more alternative embodiments, the hinge head assembly further includes a latch assembly; The latch assembly includes a latch, a spring, and a latch support. The latch support is located below the water pump, and the spring abuts against the latch and the latch support respectively from above and below. The latch can extend partially out of the lower housing of the hinge head to engage with the hinge head latch plate installed inside the cleaning head.

[0007] In one or more alternative embodiments, when the spring is in a downward compressed state, the latch is in a locked position and partially extends out of the lower hinge head housing to engage the hinge head latching plate, thereby restricting the rotation of the lower hinge head housing relative to the cleaning head. When the spring is in an uncompressed state, the locking tongue leaves the locking position and is completely located inside the lower shell of the hinge head, so that the lower shell of the hinge head can rotate back and forth within a preset angle range relative to the cleaning head.

[0008] In one or more optional embodiments, the preset angle range is 95°; When the latch is in the locked position, the hinge head assembly and the cleaning head form an angle of 85°.

[0009] In one or more alternative embodiments, the hinge head assembly further includes a locking button and a locking button support; The locking button support is disposed on the side wall of the hinge head shell, and the locking button is embedded in the locking button support; When the locking button is pressed to the locked state, the spring is compressed downwards; When the locking button is in the unlocked state, the spring is in its natural state.

[0010] In one or more alternative embodiments, the latch support includes an abutment portion located in the middle section and a first through-tube portion and a second through-tube portion located at both ends of the abutment portion; The bottom surface of the abutting part abuts against the spring; The top surfaces of the first and second through pipes abut against the water pump, and the first through pipe is used for the water pump's outlet pipe to pass through, while the second through pipe is used for the water pump's inlet pipe to pass through.

[0011] In one or more optional embodiments, the hinge head lower shell includes an integrally connected sleeve and a rotating cylinder; The first opening and the second opening are symmetrically arranged on both sides of the lower end of the rotating cylinder; The bottom of the rotating cylinder is curved, allowing it to rotate relative to the cleaning head; The sleeve can be detachably fitted onto the hinge head shell.

[0012] In one or more alternative embodiments, the upper hinge head shell is rotatably connected to the lower hinge head shell.

[0013] Secondly, this utility model provides a cleaning tool, including a cleaning head, a connecting rod assembly, and the hinge head assembly described in the first aspect.

[0014] The beneficial effects of the above-mentioned technical solutions provided by the embodiments of this utility model include at least the following: The present invention provides a hinge head assembly for connecting a cleaning head and a connecting rod assembly. A water pump is built into the hinge head housing to deliver clean water to the surface of the cleaning roller of the cleaning head. The hinge head lower housing is snapped into the middle of the rear end of the cleaning head and hinges the cleaning head. The lower end of the hinge head lower housing is symmetrically provided with a first opening and a second opening. The inlet and outlet pipes of the water pump can pass through the first opening, and the wire connected to the hinge head electrical connector can pass through the second opening. The wire connected to the hinge head electrical connector is connected to the cleaning roller drive motor inside the cleaning head. The hinge head electrical connector is also electrically connected to the water pump, realizing the separation of water and electrical circuits, preventing water leakage inside the hinge head assembly from causing short circuits, and greatly improving the safety and service life.

[0015] The hinge head assembly provided in this embodiment of the utility model, compared with the prior art where both the water pump and the water tank are located above the hinge head, places the water pump at a position only slightly higher than the water tank inside the cleaning head. This shortens the overall path length of clean water from the water tank through the water pump and the clean water pipeline to the cleaning roller. It also greatly reduces a large number of unnecessary water flow height differences during the water pump's water flow process, which can improve the working conditions of the water pump, reduce the power consumption and noise of the water pump, and the connection method between the hinge head assembly and the connecting rod assembly also facilitates the convenient removal of the water pump from the hinge head assembly for maintenance and replacement in case of water pump failure.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 A perspective view of an embodiment of the hinge head assembly; Figure 2 Another perspective view of an embodiment of the hinge head assembly; Figure 3 for Figure 1 Sectional view along line A; Figure 4 for Figure 2 Sectional view along line B; Figure 5 An exploded view of an embodiment of the hinge head assembly; Figure 6 Another exploded view of an embodiment of the hinge head assembly; Figure 7 A schematic diagram illustrating an embodiment of a cleaning head assembly consisting of a cleaning head housing assembly, a water tank assembly, a hinge head assembly, and a hinge head latching cover assembly; Figure 8 A perspective view of an embodiment of a cleaning head assembly consisting of a cleaning head housing assembly, a water tank assembly, a hinge head assembly, and a hinge head latching cover assembly; Figure 9 A perspective view of an embodiment of a cleaning tool equipped with a hinge head assembly; Figure 10 for Figure 9 The lower half of the sectional view along line C; Figure 11 A three-dimensional stepped sectional view of an embodiment of a cleaning head equipped with a hinged head assembly.

[0019] Figure Labels 10. Cleaning head; 10A. Cleaning roller drive motor; 10B. Cleaning roller outer wiping layer; 110. Cleaning head housing assembly; 120. Water tank assembly; 130. Hinge head latching cover assembly; 130a. Hinge head latching cover body; 130a3. First fastening seat; 130a4. Second fastening seat; 130b. First auxiliary roller; 130c. Second auxiliary roller; 130d. Roller pin; 140. Trash can assembly; 150. Hinge head locking tongue latching plate; 20. Connecting rod assembly; 20B. Power-down connector plug; 30. Handle assembly; 40. Hinge head assembly; 40A. Water pump; 40B. Hinge head electrical connector plug; 401. Hinge head upper shell; 402. Hinge head lower shell; 402a. First opening; 402b. Second opening; 403. Locking tongue; 404. Locking tongue support; 405. Locking button; 406. Locking button support. Detailed Implementation

[0020] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] This utility model provides a hinge head assembly and a cleaning tool, which will be described in detail below through specific embodiments.

[0024] Example 1 This embodiment of the utility model provides a hinge head assembly 40 for connecting a cleaning head 10 and a connecting rod assembly 20, see reference. Figures 1-8 As shown, it includes a water pump 40A, a hinge head electrical connector 40B, a hinge head upper shell 401, and a hinge head lower shell 402. The upper part of the hinge head shell 401 is detachably snapped into the connecting rod assembly 20, and the bottom of the hinge head shell 401 is inserted into the top opening of the hinge head lower shell 402. The water pump 40A is built into the hinge head shell 401 and is used to deliver clean water to the surface of the cleaning roller of the cleaning head 10. The hinge head electrical connector 40B is built into the hinge head shell 401 and located at the upper end of the water pump 40A, and is electrically connected to the water pump 40A and the lower electrical connector 20B of the connecting rod assembly 20 respectively. The hinge head lower shell 402 is inserted into the middle of the rear end of the cleaning head 10 and hinges the cleaning head 10; the front end of the cleaning head 10 is the end where the cleaning roller is located, and the rear end of the cleaning head 10 is the end where the water tank assembly 120 is located. The lower end of the hinge head lower shell 402 is symmetrically provided with a first opening 402a and a second opening 402b. The first opening 402a is used for the water inlet and outlet pipes of the water pump 40A to pass through, and the second opening 402b is used for the wire connected to the hinge head electrical connector 40B to pass through. The wire connected to the hinge head electrical connector 40B is connected to the cleaning roller drive motor 10A inside the cleaning head 10.

[0025] In this embodiment, refer to Figures 1-8 as well as Figure 10 As shown, the water pump 40A and the hinge head electrical connector 40B are both built-in and fixed inside the hinge head housing 401. When the hinge head housing 401 mates with the connecting rod assembly 20, only a single circuit connection needs to be completed (i.e., the hinge head electrical connector 40B mates with the lower electrical connector 20B of the connecting rod assembly 20), while the water supply is handled by the water pump 40A, which is completely enclosed within the housing, avoiding complex water interface connections at the movable hinge. All pipes and wires leading to the cleaning head 10 are led out from the lower opening of the hinge head lower housing 402. The first opening 402a is used for the inlet and outlet pipes of the water pump 40A, and the second opening 402b is used for the wires of the drive motor. This "downward wiring" design allows the water path from the water pump 40A to directly connect to the cleaning head 10 via a water pipe, completely bypassing the upper electrical connection area. The electrical circuitry descends from the connecting rod assembly 20, connects via the upper electrical connector, and then the wires immediately extend downwards from the second opening 402b to connect to the power-consuming components within the cleaning head 10. Integrating the water pump 40A into the hinge head, rather than the connecting rod assembly 20, shortens the water path, simplifies the structure, and improves assembly / disassembly efficiency as well as the pumping and drainage efficiency of the water pump 40A.

[0026] The hinge head assembly 40 provided in this embodiment of the present invention for connecting the cleaning head 10 and the connecting rod assembly 20, refers to... Figures 1-8As shown, the water pump 40A is built into the hinge head shell 401 and is used to deliver clean water to the surface of the cleaning roller of the cleaning head 10. The hinge head lower shell 402 is inserted into the middle of the rear end of the cleaning head 10 and hinges the cleaning head 10. The lower end of the hinge head lower shell 402 is symmetrically provided with a first opening 402a and a second opening 402b. The inlet and outlet pipes of the water pump 40A can pass through the first opening 402a, and the wire connected to the hinge head electrical connector 40B can pass through the second opening 402b. The wire connected to the hinge head electrical connector 40B is connected to the cleaning roller drive motor 10A inside the cleaning head 10. The hinge head electrical connector 40B is also electrically connected to the water pump 40A, realizing the separation of water and electrical circuits, preventing short circuits caused by water leakage inside the hinge head assembly 40, and greatly improving the safety and service life.

[0027] The hinge head assembly 40 provided in this embodiment of the utility model, compared with the prior art where both the water pump 40A and the water tank are located above the hinge head, places the water pump 40A at a position only slightly higher than the water tank inside the cleaning head 10. This shortens the overall clean water path length from the water tank through the water pump 40A and the clean water pipeline to the cleaning roller. It also greatly reduces a large number of unnecessary water flow height differences during the water pump 40A's water flow process, which can improve the working conditions of the water pump 40A, reduce the power consumption and noise of the water pump 40A, and the connection method between the hinge head assembly 40 and the connecting rod assembly 20 also facilitates the convenient removal of the water pump 40A from the hinge head assembly 40 for maintenance and replacement when the water pump 40A fails.

[0028] In an optional implementation, refer to Figures 1-6 as well as Figure 11 As shown, the hinge head assembly 40 also includes a latch assembly, which is used to limit the rotation of the hinge head assembly 40 relative to the cleaning head 10. Specifically, the latch assembly includes a latch 403, a spring, and a latch support 404. The latch support 404 is located below the water pump 40A, and the spring abuts against the latch 403 and the latch support 404 from above and below, respectively. The latch 403 can partially extend out of the lower hinge head housing 402 to engage with the hinge head latch engaging plate 150 installed in the cleaning head 10. When the latch 403 is not engaged with the hinge head latch plate 150, the bottom end of the hinge head lower shell 402 is located above the hinge head latch plate 150, and the hinge head lower shell 402 can rotate back and forth relative to the cleaning head 10. When the latch 403 is engaged with the hinge head latch plate 150, the latch 403 abuts against the hinge head latch plate 150, restricting the rearward rotation of the hinge head lower shell 402, so that the hinge head assembly 40 and the connecting rod assembly 20 axially connected to the hinge head assembly 40 are stably upright relative to the cleaning head 10.

[0029] In an optional implementation, refer to Figure 11As shown, when the spring is in a downward compressed state, it stores energy. At this time, the locking tongue 403 is in the locked position and partially extends out of the hinge head lower shell 402 to engage with the hinge head locking tongue engaging plate 150. The locking tongue 403 and the engaging plate form a rigid contact, restricting the rotation of the hinge head lower shell 402 relative to the cleaning head 10, thus keeping the hinge head assembly 40 and the connecting rod assembly 20 in a stable upright posture. When the spring is in an uncompressed state, the compressed spring releases energy, and the locking tongue 403 leaves the locked position and springs back to its initial position. At this time, the locking tongue 403 is completely located inside the hinge head lower shell 402, eliminating the mechanical interference with the engaging plate, so that the hinge head lower shell 402 can rotate back and forth within a preset angle range relative to the cleaning head 10, thereby allowing the hinge head assembly 40 to steer flexibly.

[0030] The hinge head assembly 40 provided in this embodiment allows the locking tongue 403 to rotate together with the lower shell 402 of the hinge head when it leaves the locking position. When the user holds the handle assembly 30 of the cleaning tool, the handle assembly 30 can drive the connecting rod assembly 20, which in turn drives the hinge head assembly 40, enabling the hinge head assembly 40 to flexibly rotate relative to the cleaning head 10 in the front-back direction. In the locked state, the connecting rod assembly 20 and the hinge head assembly 40 remain rigidly upright, avoiding continuous stress or impact on the water and electrical interfaces at the hinge due to machine shaking during cleaning. This further protects the long-term reliability of these critical interfaces and reduces the risk of loosening, wear, or leakage caused by vibration. In the released state, the cleaning head 10 can rotate back and forth at a specific angle, allowing the floor scrubber to easily navigate around obstacles such as table legs and chairs, making it ideal for use in complex home environments and achieving a balance between stability and flexibility.

[0031] In an optional embodiment, when the latch 403 springs back to its initial position after leaving the locking position, the hinge head lower shell 402 can rotate back and forth within a preset angle range of 95° relative to the cleaning head 10. Furthermore, when the latch 403 is in the locking position, the hinge head assembly 40 and the cleaning head 10 form an angle of 85°, that is, the hinge head assembly 40 can form an angle of 85°-180° with the cleaning head 10. When the latch 403 leaves the locking position, the hinge head assembly 40 can continue to rotate freely until the connecting rod assembly 20 forms an angle of 180° with the cleaning head 10. When the locking tongue 403 is in the locked position, the hinge head assembly 40 and the cleaning head 10 are rigidly fixed at an 85° angle. 85° is the optimal ergonomic angle for the floor scrubber to clean. At this angle, the connecting rod is moderately tilted, allowing the user to comfortably apply downward pressure without excessive bending. At the same time, the cleaning head 10 can fit the ground in the most effective posture, effectively reducing back fatigue caused by long-term work and improving the user experience. After the locking tongue 403 leaves the locked position, the hinge head assembly 40 can obtain a 95° rotation range, allowing the cleaning head 10 to rotate at a large angle, improving the machine's maneuverability and passability. It can easily bypass obstacles such as dense furniture legs. This design takes into account efficient operation, extreme flexibility, and all-round coverage cleaning solutions, greatly improving the user experience of the product.

[0032] In an optional implementation, refer to Figures 1-6 As shown, the hinge head assembly 40 also includes a locking button 405 and a locking button support 406. The locking button support 406 is located on the side wall of the hinge head shell 401, and the locking button 405 is embedded in the locking button support 406. When the locking button 405 is pressed into the locked state, the spring is compressed downwards; when the locking button 405 is in the unlocked state, the spring is in its natural state. Specifically, when the user presses the locking button 405, the locking button 405 moves inwards, and its inner structure (such as a push rod) directly presses down on the latch support 404. The latch support 404 moves downwards, compressing the spring below it, causing the spring to be in a downward compressed state, and forcing the latch 403 part to extend out of the hinge head lower shell 402, ultimately engaging with the hinge head latch engagement plate 150 inside the cleaning head 10, achieving mechanical locking. In the locked state, if the user needs to unlock, simply press the locking button 405 again. The downward pressure of the locking button 405 will briefly further compress the spring or release the self-locking structure, causing the latch 403 to disengage from the hinge head latch plate 150. Once disengaged, the compressed spring will immediately rebound upward to release energy, pushing the latch 403 and the locking button 405 back to their initial positions simultaneously. The latch 403 will fully retract into the housing, and the hinge head assembly 40 will resume free rotation.

[0033] The hinge head assembly 40 provided in this embodiment of the invention makes switching between locking and unlocking modes very simple and intuitive. Simply press the locking button 405, which aligns with the intuitive operation of modern home appliances and has a low learning curve. When cleaning tools need to be stored upright or placed in a cabinet, the user can press the locking button 405 in advance to lock the status, ensuring the machine stands stably and will not tip over due to accidental collisions.

[0034] In an optional implementation, refer to Figures 1-6 as well as Figure 11 As shown, the latch support 404 includes a middle abutment portion and a first and second through-pipe portions located at both ends of the abutment portion. The bottom surface of the abutment portion abuts against a spring, while the top surfaces of the first and second through-pipe portions abut against the water pump 40A. The first through-pipe portion is used for the outlet pipe of the water pump 40A, and the second through-pipe portion is used for the inlet pipe of the water pump 40A. As a core force-bearing point, the latch support 404 transmits downward pressure to the spring when the user presses the locking button 405. The spring compresses, forcing the latch 403 to extend downward and engage with the hinge head latch plate 150. The first and second through-pipe portions are designed as hollow channel structures, providing dedicated and protected passageways for the inlet and outlet pipes of the water pump 40A. This achieves overlapping use of functional space, and the water pipes are orderly constrained within a preset path, avoiding clutter within the narrow housing. Furthermore, the locking tongue support 404 abuts against the water pump 40A through the top surface of its pipe section, effectively becoming a mounting support and positioning reference for the water pump 40A. The locking tongue support 404 connects the upper water pump 40A (and its inlet and outlet pipes) with the lower locking tongue assembly into a compact, integrated functional module. This single component simultaneously solves three major functions: supporting the water pump 40A, transmitting force, and providing a channel for the water pipes. This achieves functional superposition in three-dimensional space, greatly saving extremely valuable space inside the hinge head. This allows the entire hinge head assembly 40 to be made smaller and lighter, while also improving the rigidity and assembly precision of the hinge head assembly 40.

[0035] In an optional embodiment, the lower hinge head shell 402 includes an integrally connected sleeve and a rotating cylinder. A first opening 402a and a second opening 402b are symmetrically arranged on both sides of the lower end of the rotating cylinder; the bottom of the rotating cylinder is arc-shaped to allow the lower hinge head shell to rotate smoothly relative to the cleaning head 10. The sleeve can be detachably fitted onto the upper hinge shell.

[0036] In an optional embodiment, the hinge head upper shell 401 and the hinge head lower shell 402 are rotatably connected. When it is necessary to rotate the connecting rod assembly 20 about its own axis, the hinge head upper shell 401 and the hinge head lower shell 402 can be rotated relative to each other. This allows the user to have a very easy and convenient experience when using the cleaning tool, as well as flexible forward, backward, and turning movements of the cleaning head 10.

[0037] Example 2 Based on the same inventive concept, embodiments of the present invention also provide a cleaning tool, referring to... Figure 9 As shown, it includes a cleaning head 10, a connecting rod assembly 20, and a hinge head assembly 40 as described in Embodiment 1. The hinge head assembly 40 is connected to the cleaning head 10 and the connecting rod assembly 20, respectively.

[0038] In this embodiment, refer to Figure 7 , Figure 8 and Figure 11 As shown, the hinge head lower shell 402 of the hinge head assembly 40 is hinged to the middle receiving groove of the water tank assembly 120 of the cleaning head 10, and the water tank assembly 120 is clamped and fixed from front to back by the cleaning head housing assembly 110 and the hinge head locking cover assembly 130. The hinge head locking tongue plate 150 is fixed to the cleaning head housing assembly 110.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. This disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims. Thus, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model is also intended to include these modifications and variations.

Claims

1. A hinge head assembly for connecting a cleaning head and a connecting rod assembly, characterized in that, Includes a water pump, a hinge head electrical connector, a hinge head upper shell, and a hinge head lower shell; The upper part of the hinge head shell is detachably snapped into the connecting rod assembly, and the bottom of the hinge head shell is inserted into the top opening of the hinge head lower shell. The water pump is built into the housing of the hinge head and is used to deliver clean water to the surface of the cleaning roller of the cleaning head. The hinge head electrical connector is built into the hinge head shell and located at the upper end of the water pump, and is electrically connected to the lower electrical connector of the water pump and the connecting rod assembly respectively. The hinge head lower shell is inserted into the middle of the rear end of the cleaning head and hinges the cleaning head. The lower end of the hinge head housing is symmetrically provided with a first opening and a second opening. The first opening is for the water pump's inlet and outlet pipes to pass through, and the second opening is for the wires connected to the hinge head electrical connector to pass through. The wires connected to the hinge head electrical connector are connected to the cleaning roller drive motor inside the cleaning head.

2. The hinge head assembly according to claim 1, characterized in that, It also includes a locking tongue assembly; The latch assembly includes a latch, a spring, and a latch support. The latch support is located below the water pump, and the spring abuts against the latch and the latch support respectively from above and below. The latch can extend partially out of the lower housing of the hinge head to engage with the hinge head latch plate installed inside the cleaning head.

3. The hinge head assembly according to claim 2, characterized in that, When the spring is in a downward compressed state, the latch is in the locked position and partially extends out of the lower shell of the hinge head to engage with the latch plate of the hinge head, thereby restricting the rotation of the lower shell of the hinge head relative to the cleaning head. When the spring is in an uncompressed state, the locking tongue leaves the locking position and is completely located inside the lower shell of the hinge head, so that the lower shell of the hinge head can rotate back and forth within a preset angle range relative to the cleaning head.

4. The hinge head assembly according to claim 3, characterized in that, The preset angle range is 95°; When the latch is in the locked position, the hinge head assembly and the cleaning head form an angle of 85°.

5. The hinge head assembly according to claim 3, characterized in that, It also includes a lock button and a lock button support; The locking button support is disposed on the side wall of the hinge head shell, and the locking button is embedded in the locking button support; When the locking button is pressed to the locked state, the spring is compressed downwards; When the locking button is in the unlocked state, the spring is in its natural state.

6. The hinge head assembly according to claim 2, characterized in that, The latch support includes an abutting portion located in the middle section and a first through-tube portion and a second through-tube portion located at both ends of the abutting portion; The bottom surface of the abutting part abuts against the spring; The top surfaces of the first and second through pipes abut against the water pump, and the first through pipe is used for the water pump's outlet pipe to pass through, while the second through pipe is used for the water pump's inlet pipe to pass through.

7. The hinge head assembly according to claim 1, characterized in that, The hinge head lower shell includes an integrally connected upper and lower sleeve and a rotating cylinder; The first opening and the second opening are symmetrically arranged on both sides of the lower end of the rotating cylinder; The bottom of the rotating cylinder is curved, allowing it to rotate relative to the cleaning head; The sleeve can be detachably fitted onto the hinge head shell.

8. The hinge head assembly according to claim 1, characterized in that, The upper shell of the hinge head is rotatably connected to the lower shell of the hinge head.

9. A cleaning tool, characterized in that, It includes a cleaning head, a connecting rod assembly, and a hinge head assembly as described in any one of claims 1-8.

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