Hinge device for scrubber

By integrating the water pump circulating connection pipes and circuits in the floor scrubber hinge device, and using a design that locking the tongue assembly is connected to the drag head, the problem of easy damage to the circuit and water barrier during maintenance in the prior art is solved, and maintenance replacement is improved efficiency.

CN222149929UActive Publication Date: 2024-12-13WUHAN DIISEA INTELLIGENCE TECH CO LTD
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Patent Information

Application Number
CN202420855965.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-23
Publication Date
2024-12-13
Estimated Expiration
2034-04-23

AI Technical Summary

Technical Problem

The hinge devices of existing floor scrubbers are prone to disrupt circuit and water connections during maintenance and replacement, resulting in inefficient maintenance.

Method used

A hinge device is designed, including the upper connecting body and the lower connecting body, the built-in floor scrubber water pump circulating connection pipes and circuits, and connected through terminal covers and aluminum rods to achieve the closure of the water circuits and circuits, using locking tongue assembly and drag head It is clamped and provides disassembly and assembly buttons for easy disassembly and installation.

Benefits of technology

When maintaining and replacing hinges, the waterway and circuit connections are not damaged, which improves the efficiency of maintenance and replacement and reduces maintenance time.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of cleaning equipment, in particular to a hinge device for a scrubber, which comprises an upper connecting main body, a shell connecting piece and a lower connecting main body, the upper connecting main body is used for being detachably connected with a connecting rod of the scrubber; the lower connecting main body is used for being detachably connected with a mop head of the scrubber; the shell connecting piece is used for fixedly connecting the upper connecting main body and the lower connecting main body at an angle; and a scrubber water pump circulating connecting pipeline and a circuit for connecting the water pump with a source are accommodated in the upper connecting main body and the lower connecting main body. The upper connecting body and the lower connecting body of the hinge device are detachably connected with the scrubber connecting rod and the scrubber mopping head, and meanwhile a scrubber water pump circulating connecting pipeline and a water pump and source connecting circuit are contained in the hinge device. The technical problem that an existing scrubber hinge device is low in maintenance and replacement efficiency is solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a hinge device for a floor scrubber. Background Art

[0002] In the early days, people used brooms, mops, floor wipes, etc. to clean the floor. These tools mainly rely on manual operation to complete the cleaning work. With the advancement of science and technology, people's requirements for floor cleaning tools have gradually increased. The first to appear was the vacuum cleaner, which relies on electricity to generate negative pressure to absorb garbage, dust, etc. on the ground. According to the cleaning methods and the circulation channels of small and large particles of garbage, this type of technology is usually classified as air-dust circulation technology. However, due to the limitations of its working principle, the vacuum cleaner cannot clean some garbage and stains that are firmly attached to the ground. Therefore, a new "water-dust circulation" floor scrubber has appeared. The motor drives the cleaning cylinder to wipe the ground. At the same time, the floor cleaner will also be equipped with a water supply system and a sink to clean the cleaning cylinder, thereby perfectly cleaning the ground.

[0003] In the prior art, a Chinese utility model patent with publication number CN217447618U discloses a floor scrubber, which relates to the technical field of floor scrubbers, and specifically includes a handle, a hollow connecting rod, a floor scrubber body, a water tank, a lithium battery assembly, a sewage recovery tank, a cleaning device and a base. The bottom of the handle is fixedly connected to the top of the hollow connecting rod, and the side of the hollow connecting rod away from the handle is fixedly connected to the floor scrubber body. A connecting piece is fixedly connected to the side of the floor scrubber body away from the hollow connecting rod, and a connecting piece is fixedly connected to the side of the connecting piece away from the floor scrubber body. The utility model uses a recessed slot designed in conjunction with an independently designed movable plug plate, which can be retracted on both sides through an active buckle, so that the active buckle can be stuck in the recessed slot to complete the fixed seal. At the same time, the design of the active buckle can minimize the damage to the buckle during its operation, and when the active buckle of the movable plug plate is damaged and cannot be used, only the movable plug plate can be replaced.

[0004] In the above scheme, a connecting piece is fixedly connected to the side of the floor scrubber body away from the hollow connecting rod, and a cleaning device is fixedly connected to the side of the connecting piece away from the floor scrubber body, so as to achieve the connection between the floor scrubber body and the cleaning device. The hinge device configured in the existing "water-dust circulation" floor scrubber is arranged at the junction of the floor scrubber body and the tractor, which inevitably occupies a large volume. At the same time, in order to allow the battery assembly, control system, and water pump configured in the body to provide the tractor with power source, control signal, and conveying pipeline through the hinge device, the user must be careful not to damage the completed circuit connection and water connection when maintaining the hinge device of the floor scrubber, resulting in low efficiency during maintenance and replacement. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a hinge device for a floor scrubber so as to improve the efficiency of maintenance and replacement of the hinge device of the floor scrubber. The utility model realizes water circuit connection and circuit connection by accommodating a circulation connection pipeline of a water pump of the floor scrubber and a circuit connecting the water pump and a source in the hinge device. When the hinge device of the floor scrubber is maintained and replaced, the water circuit and the circuit will not be damaged.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a hinge device for a floor scrubber, comprising an upper connecting body, a shell connecting piece, and a lower connecting body;

[0008] The upper connecting body is used for detachable connection with the connecting rod of the floor scrubber;

[0009] The lower connecting body is used for detachable connection with the mop head of the floor scrubber;

[0010] The shell connecting piece is used to fix the upper connecting body and the lower connecting body at an angle;

[0011] The upper connecting body and the lower connecting body contain a circulating connecting pipeline of a water pump of the floor scrubber and a circuit for connecting the water pump with a source.

[0012] Furthermore, the upper connecting body comprises a terminal cover and an aluminum rod connecting body; the terminal cover is fixedly connected to the aluminum rod connecting body.

[0013] Furthermore, the terminal cover is provided with a water pump inlet and outlet pipe interface and a terminal connector, the water pump inlet and outlet pipe interface is connected to the water pump inlet and outlet pipes in the floor scrubber connecting rod, and the terminal connector is connected to the wire in the floor scrubber connecting rod.

[0014] Furthermore, the terminal cover is also provided with a terminal cover soft rubber sleeve, and the terminal cover soft rubber sleeve is provided with slots matching the water inlet and outlet pipe interfaces of the water pump and the terminal connector.

[0015] Furthermore, the lower connecting body comprises a hinge head shell and a locking tongue assembly; the locking tongue assembly is arranged in the hinge head shell, and the hinge device is clamped with the floor scrubber tractor head through the locking tongue assembly.

[0016] Furthermore, the lock tongue assembly includes a lock tongue button, a hinge head pin, a lock tongue socket and upper and lower lock tongues on the hinge head, the lock tongue button is arranged above the hinge head pin, the lock tongue socket is sleeved on the outside of the hinge head pin, the upper and lower lock tongues on the hinge head are arranged at the bottom of the hinge head pin, and the hinge head pin can be retracted in the hinge head housing.

[0017] Furthermore, a first spring is sleeved outside the hinge head ejector pin, the first spring is located between the lock tongue holder and the upper and lower lock tongues of the hinge head, and second springs are arranged on both sides of the lock tongue button.

[0018] Furthermore, the upper and lower locking tongues of the hinge head include a limiting portion and a locking tongue portion, the limiting portion is used to limit the first spring, one end of the first spring is located in the limiting portion, and a protrusion is provided on the outward side of the locking tongue portion.

[0019] Furthermore, a through hole is provided at the center of the limiting portion, the locking tongue portions extend downward along both sides of the through hole at the center of the limiting portion and are symmetrically arranged, and the hinge head ejector pin is extended and retracted through the through hole.

[0020] Furthermore, the upper connecting body and the outer shell connecting piece are provided with disassembly and assembly buttons, and the disassembly and assembly buttons are used to realize the detachable connection between the upper connecting body and the connecting rod of the floor scrubber.

[0021] Furthermore, the locking tongue button is provided with a first inclined surface matched with the upper and lower locking tongues of the hinge head, and the hinge head ejector pin is provided with a second inclined surface matched with the locking tongue button.

[0022] Furthermore, the hinge head shell includes a hinge head upper shell and a hinge head lower shell, the hinge head upper shell and the hinge head lower shell are mounted in a matched manner, and the hinge head upper shell and the hinge head lower shell are respectively clamped on both sides of the shell connecting piece.

[0023] Furthermore, after the upper shell of the hinge head and the lower shell of the hinge head are assembled and installed, a rotating shaft is formed on both sides, and the rotating shaft is clamped in the mop head of the floor scrubber.

[0024] The beneficial effects of the utility model are:

[0025] The utility model provides a water pump inlet and outlet water pipe interface and a terminal connector on the terminal cover, the water pump inlet and outlet water pipe interface is connected to the water pump inlet and outlet water pipe in the connecting rod of the floor washing machine, the terminal connector is connected to the wire in the connecting rod of the floor washing machine, so as to realize the water circuit connection and circuit connection in the floor washing machine, and a locking tongue assembly is provided in the hinge head shell, and the hinge device is clamped with the drag head of the floor washing machine through the locking tongue assembly, so that when the hinge device of the floor washing machine is maintained and replaced, the water circuit and the circuit will not be damaged, thereby improving the efficiency of maintenance and replacement of the hinge device.

[0026] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A three-dimensional diagram of a floor scrubber showing a hinge device according to an embodiment of the utility model;

[0029] Figure 2 An exploded view of a floor scrubber of a hinge device according to an embodiment of the utility model is shown;

[0030] Figure 3 for Figure 1 A-axis planing view;

[0031] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0032] Figure 5 This is a front view of the hinge device of the embodiment of the utility model;

[0033] Figure 6 for Figure 5 Middle C-axis planing view;

[0034] Figure 7 It is a three-dimensional diagram of the hinge device of the embodiment of the utility model;

[0035] Figure 8 An exploded view of a hinge device according to an embodiment of the present utility model;

[0036] Fig. 9 This is a schematic diagram of the hinge device of the embodiment of the utility model being installed on the connecting rod assembly of the floor scrubber;

[0037] Fig.10 This is an exploded view of the hinge device of the embodiment of the utility model installed on the connecting rod assembly of the floor scrubber;

[0038] Fig.11 This is a front view of the hinge device of the utility model embodiment after being installed on the connecting rod assembly of the floor scrubber;

[0039] Fig.12 for Fig.11 Middle D-axis planing view.

[0040] In the figure: 1. upper connecting body; 11. terminal cover; 111. water pump inlet and outlet pipe interface; 112. terminal connector; 113. terminal cover soft rubber sleeve; 12. aluminum rod connecting body; 2. shell connector; 3. lower connecting body; 31. hinge head shell; 311. hinge head upper shell; 312. hinge head lower shell; 32. lock tongue assembly; 321. lock tongue button; 3211. second spring; 321 2. First inclined plane; 322. Hinge head ejector pin; 3221. First spring; 3222. Second inclined plane; 323. Lock tongue holder; 324. Hinge head upper and lower lock tongues; 3241. Limiting part; 3242. Lock tongue part; 3243. Protrusion; 4. Floor scrubber connecting rod; 41. Water pump inlet and outlet pipes; 42. Wire; 43. Connector; 5. Floor scrubber mop head; 6. Disassembly and assembly button; 7. Rotating shaft. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Example

[0044] like Figure 1-12As shown, the utility model provides a hinge device for a floor scrubber, comprising an upper connecting body 1, a shell connecting member 2, and a lower connecting body 3; Figure 1 and Figure 2 As shown, the upper connecting body 1 is used for detachable connection with the connecting rod 4 of the floor scrubber; the lower connecting body 3 is used for detachable connection with the mop head 5 of the floor scrubber; the shell connecting member 2 is used for fixedly connecting the upper connecting body 1 and the lower connecting body 3 at an angle, and the design is more reasonable and ergonomic; the upper connecting body 1 and the lower connecting body 3 contain the circulating connecting pipeline of the floor scrubber water pump and the circuit connecting the water pump and the source.

[0045] Compared with the prior art, the utility model realizes the connection between the floor scrubber body and the mop head by setting a hinge device, which not only reduces the volume occupied by the hinge device in the overall device, but also accommodates the floor scrubber water pump circulation connection pipeline and the circuit connecting the water pump and the source in the upper connecting body 1 and the lower connecting body 3, realizing the water connection and the circuit connection, making it convenient to maintain and replace the hinge device without damaging the internal water connection and the circuit connection, thereby improving the maintenance and replacement efficiency of the hinge device.

[0046] Specifically, the upper connecting body 1 includes a terminal cover 11 and an aluminum rod connecting body 12; the terminal cover 11 is fixedly connected to the aluminum rod connecting body 12. Preferably, the utility model uses screws to fix the terminal cover 11 to the aluminum rod connecting body 12, and can also use snaps or other methods to achieve the fixed connection between the terminal cover 11 and the aluminum rod connecting body 12, which is not limited by the utility model.

[0047] Specifically, Figure 5 and Figure 8 As shown, the terminal cover 11 is provided with a water pump inlet and outlet pipe interface 111 and a terminal connector 112. The water pump inlet and outlet pipe interface 111 is connected to the water pump inlet and outlet pipes 41 in the floor scrubber connecting rod 4, and the terminal connector 112 is connected to the wire 42 in the floor scrubber connecting rod 4, thereby realizing the water connection and circuit connection inside the floor scrubber, and the operation is simple and convenient.

[0048] As an embodiment of the present application, a terminal cover soft rubber sleeve 113 is also provided on the terminal cover 11, and the terminal cover soft rubber sleeve 113 is provided with slots matching the water pump inlet and outlet pipe interfaces 111 and the terminal connector 112, so as to facilitate water connection and circuit connection. At the same time, the terminal cover soft rubber sleeve 113 also protects the terminal cover 11.

[0049] As an embodiment of the present application, the lower connecting body 3 includes a hinge head shell 31 and a locking tongue assembly 32; the locking tongue assembly 32 is arranged in the hinge head shell 31, and the hinge device is connected to the scrubber mop 5 through the locking tongue assembly 32.

[0050] Specifically, Figure 8 As shown, the locking tongue assembly 32 includes a locking tongue button 321, a hinge head pin 322, a locking tongue holder 323 and upper and lower locking tongues 324 on the hinge head. The locking tongue button 321 is arranged above the hinge head pin 322, the locking tongue holder 323 is sleeved on the outside of the hinge head pin 322, and the upper and lower locking tongues 324 on the hinge head are arranged at the bottom of the hinge head pin 322. The hinge head pin 322 can be retracted in the hinge head shell 31 and locks with the scrubber mop 5 to make a clicking sound. The clicking sound helps the user to judge whether the hinge device is locked with the scrubber mop 5 completely and correctly. When the hinge device is locked with the scrubber mop 5, the scrubber connecting rod 4 can be freely rotated in any direction. The design is reasonable and convenient for users to use better.

[0051] As an embodiment of the present application, the hinge head shell 31 includes a hinge head upper shell 311 and a hinge head lower shell 312, and the hinge head upper shell 311 and the hinge head lower shell 312 are installed in pairs. Specifically, four studs are arranged in the hinge head upper shell 311, and the hinge head upper shell 311 and the hinge head lower shell 312 are installed in pairs through the four studs, and can also be connected by snaps. The utility model does not limit the connection method of the hinge head upper shell 311 and the hinge head lower shell 312, and the hinge head upper shell 311 and the hinge head lower shell 312 are respectively clamped on both sides of the shell connector 2 for easy installation.

[0052] As an embodiment of the present application, the outer sleeve of the hinge head pin 322 is provided with a first spring 3221, the first spring 3221 is located between the lock tongue seat 323 and the upper and lower lock tongues 324 of the hinge head, and second springs 3211 are provided on both sides of the lock tongue button 321.

[0053] The cam 324 has a plurality of cams 325a and 326a which are respectively used to hold the cam 324 in place and to hold the cam 326b in place.

[0054] Specifically, a through hole is provided at the center of the limiting portion 3241 , and the locking tongue portions 3242 extend downward along both sides of the through hole at the center of the limiting portion 3241 and are symmetrically arranged, and the hinge head ejector pin 322 is extended and retracted through the through hole.

[0055] As an embodiment of the present application, Figure 8-Figure 12 As shown, the upper connecting body 1 and the shell connecting member 2 are provided with a disassembly button 6, and the disassembly button 6 is used to realize the detachable connection between the upper connecting body 1 and the connecting rod 4 of the floor washing machine. Specifically, a connecting member 43 is provided in the connecting rod 4 of the floor washing machine. First, the connecting member 43 is sleeved on the upper connecting body 1, and then the water pump inlet and outlet pipe interface 111 is connected to the water pump inlet and outlet pipe 41 in the connecting rod 4 of the floor washing machine. The terminal connector 112 is connected to the wire 42 in the connecting rod 4 of the floor washing machine to realize the water connection and circuit connection inside the floor washing machine. Finally, the connecting member 43 is connected to the connecting rod 4 of the floor washing machine, thereby realizing the detachable connection between the upper connecting body 1 and the connecting rod 4 of the floor washing machine. The design is reasonable and the structure is more compact.

[0056] As an embodiment of the present application, the lock tongue button 321 is provided with a first inclined surface 3212 which cooperates with the upper and lower lock tongues 324 of the hinge head, and the hinge head ejector pin 322 is provided with a second inclined surface 3222 which cooperates with the lock tongue button 321. The first inclined surface 3212 abuts against the second inclined surface 3222. Through the cooperation of the first inclined surface 3212 and the second inclined surface 3222, the hinge head ejector pin 322 can be movably retracted and extended on the hinge head housing 31.

[0057] Specifically, in the application process of this embodiment, under the elastic force of the second spring 3211, the first inclined surface 3212 abuts against the second inclined surface 3222, and the hinge head ejector pin 322 extends out of the hinge head shell 31 and locks with the floor scrubber mop 5 to realize the connection between the hinge device and the floor scrubber mop 5, and the terminal cover 11 is connected to the floor scrubber connecting rod 4, thereby realizing the connection between the floor scrubber connecting rod 4 and the floor scrubber mop 5, and the water circuit and the circuit in the floor scrubber are connected through the water pump inlet and outlet pipe interface 111 and the terminal connector 112 on the terminal cover 11, and the hinge device is maintained and replaced. When the floor scrubber connecting rod 4 is bent backward, the hinge head pin 322 is freed from the constraint under the action of external force, and is against the floor scrubber mop 5, and moves upward under the action of the first spring 3221, and the second inclined surface 3222 is against the first inclined surface 3212. Through the cooperation between the first inclined surface 3212 and the second inclined surface 3222, when the hinge head pin 322 moves upward, the second spring 3211 of the locking tongue button 321 can be compressed, and then the hinge head pin 322 is retracted into the hinge head shell 31, so that the hinge head device and the floor scrubber mop 5 can be disassembled. The design is reasonable and the use is stable.

[0058] Specifically, after the hinge head upper shell 311 and the hinge head lower shell 312 are assembled and installed, a rotating shaft 7 is formed on both sides, and the rotating shaft 7 is clamped in the scrubber tractor 5 to realize the hinge device being hinged in the scrubber tractor 5.

[0059] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hinge device for a floor scrubber, comprising an upper connecting body, a shell connecting piece, and a lower connecting body; characterized in that: The upper connecting body is used for detachable connection with the connecting rod of the floor scrubber; The lower connecting body is used for detachable connection with the mop head of the floor scrubber; The shell connecting piece is used to fix the upper connecting body and the lower connecting body at an angle; The upper connecting body and the lower connecting body contain a circulating connecting pipeline of a water pump of the floor scrubber and a circuit for connecting the water pump with a source.

2. A hinge device for a floor scrubber according to claim 1, characterized in that: The upper connecting body comprises a terminal cover and an aluminum rod connecting body; the terminal cover is fixedly connected to the aluminum rod connecting body.

3. A hinge device for a floor scrubber according to claim 2, characterized in that: The terminal cover is provided with a water pump inlet and outlet pipe interface and a terminal connector, the water pump inlet and outlet pipe interface is connected to the water pump inlet and outlet pipes in the floor scrubber connecting rod, and the terminal connector is connected to the wire in the floor scrubber connecting rod.

4. A hinge device for a floor scrubber according to claim 3, characterized in that: The terminal cover is also provided with a terminal cover soft rubber sleeve, and the terminal cover soft rubber sleeve is provided with slots matching the water inlet and outlet pipe interfaces of the water pump and the terminal connector.

5. The hinge device for a floor scrubber according to claim 1, characterized in that: The lower connecting body comprises a hinge head shell and a locking tongue assembly; the locking tongue assembly is arranged in the hinge head shell, and the hinge device is clamped with the floor scrubber tractor head through the locking tongue assembly.

6. A hinge device for a floor scrubber according to claim 5, characterized in that: The lock tongue assembly includes a lock tongue button, a hinge head pin, a lock tongue holder and upper and lower lock tongues of the hinge head. The lock tongue button is arranged above the hinge head pin, the lock tongue holder is sleeved on the outside of the hinge head pin, the upper and lower lock tongues of the hinge head are arranged at the bottom of the hinge head pin, and the hinge head pin can be retracted in the hinge head shell.

7. A hinge device for a floor scrubber according to claim 6, characterized in that: The outer sleeve of the hinge head ejector pin is provided with a first spring, the first spring is located between the lock tongue holder and the upper and lower lock tongues of the hinge head, and second springs are arranged on both sides of the lock tongue button.

8. The hinge device for a floor scrubber according to claim 7, characterized in that: The upper and lower locking tongues of the hinge head include a limiting portion and a locking tongue portion, wherein the limiting portion is used to limit the first spring, one end of the first spring is located in the limiting portion, and a protrusion is provided on the outward side of the locking tongue portion.

9. A hinge device for a floor scrubber according to claim 8, characterized in that: A through hole is arranged at the center of the limiting portion, the locking tongue portions extend downward along both sides of the through hole at the center of the limiting portion and are symmetrically arranged, and the hinge head ejector pin is extended and retracted through the through hole.

10. The hinge device for a floor scrubber according to claim 1, characterized in that: The upper connecting body and the outer shell connecting piece are provided with disassembly and assembly buttons, and the disassembly and assembly buttons are used to realize the detachable connection between the upper connecting body and the connecting rod of the floor scrubber.

11. The hinge device for a floor scrubber according to claim 6, characterized in that: The locking tongue button is provided with a first inclined surface matched with the upper and lower locking tongues of the hinge head, and the hinge head ejector pin is provided with a second inclined surface matched with the locking tongue button.

12. The hinge device for a floor scrubber according to claim 5, characterized in that: The hinge head shell comprises a hinge head upper shell and a hinge head lower shell, the hinge head upper shell and the hinge head lower shell are mounted in a matched manner, and the hinge head upper shell and the hinge head lower shell are respectively clamped on two sides of the shell connecting piece.

13. A hinge device for a floor scrubber according to claim 12, characterized in that: After the upper shell of the hinge head and the lower shell of the hinge head are assembled and installed, a rotating shaft is formed on both sides, and the rotating shaft is clamped in the mop head of the floor scrubber.

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